1 | /* $Id: SSM.cpp 48986 2013-10-08 23:10:16Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * SSM - Saved State Manager.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2013 Oracle Corporation
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
10 | * available from http://www.virtualbox.org. This file is free software;
|
---|
11 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
12 | * General Public License (GPL) as published by the Free Software
|
---|
13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
---|
14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
---|
15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
16 | */
|
---|
17 |
|
---|
18 |
|
---|
19 | /** @page pg_ssm SSM - The Saved State Manager
|
---|
20 | *
|
---|
21 | * The Saved State Manager (SSM) implements facilities for saving and loading a
|
---|
22 | * VM state in a structural manner using callbacks for named data units.
|
---|
23 | *
|
---|
24 | * At init time each of the VMM components, Devices, Drivers and one or two
|
---|
25 | * other things will register data units which they need to save and restore.
|
---|
26 | * Each unit have a unique name (ascii), instance number, and a set of callbacks
|
---|
27 | * associated with it. The name will be used to identify the unit during
|
---|
28 | * restore. The callbacks are for the two operations, save and restore. There
|
---|
29 | * are three callbacks for each of the two - a prepare, a execute and a complete
|
---|
30 | * - giving each component ample opportunity to perform actions both before and
|
---|
31 | * afterwards.
|
---|
32 | *
|
---|
33 | * The SSM provides a number of APIs for encoding and decoding the data: @see
|
---|
34 | * grp_ssm
|
---|
35 | *
|
---|
36 | *
|
---|
37 | *
|
---|
38 | * @section sec_ssm_live_snapshots Live Snapshots
|
---|
39 | *
|
---|
40 | * The live snapshots feature (LS) is similar to teleportation (TP) and was a
|
---|
41 | * natural first step when implementing TP. The main differences between LS and
|
---|
42 | * TP are that after a live snapshot we will have a saved state file, disk image
|
---|
43 | * snapshots, and the VM will still be running.
|
---|
44 | *
|
---|
45 | * Compared to normal saved stated and snapshots, the difference is in that the
|
---|
46 | * VM is running while we do most of the saving. Prior to LS, there was only
|
---|
47 | * one round of callbacks during saving and the VM was paused during it. With
|
---|
48 | * LS there are 1 or more passes while the VM is still running and a final one
|
---|
49 | * after it has been paused. The runtime passes are executed on a dedicated
|
---|
50 | * thread running at at the same priority as the EMTs so that the saving doesn't
|
---|
51 | * starve or lose in scheduling questions (note: not implemented yet). The final
|
---|
52 | * pass is done on EMT(0).
|
---|
53 | *
|
---|
54 | * There are a couple of common reasons why LS and TP will fail:
|
---|
55 | * - Memory configuration changed (PCI memory mappings).
|
---|
56 | * - Takes too long (TP) / Too much output (LS).
|
---|
57 | *
|
---|
58 | *
|
---|
59 | * The live saving sequence is something like this:
|
---|
60 | *
|
---|
61 | * -# SSMR3LiveSave is called on EMT0. It returns a saved state
|
---|
62 | * handle.
|
---|
63 | * -# SSMR3LiveDoStep1 is called on a non-EMT. This will save the major
|
---|
64 | * parts of the state while the VM may still be running.
|
---|
65 | * -# The VM is suspended.
|
---|
66 | * -# SSMR3LiveDoStep2 is called on EMT0 to save the remainder of the state
|
---|
67 | * in the normal way.
|
---|
68 | * -# The client does any necessary reconfiguration of harddisks and
|
---|
69 | * similar.
|
---|
70 | * -# SSMR3LiveDone is called on EMT0 to close the handle.
|
---|
71 | * -# The VM is resumed or powered off and destroyed.
|
---|
72 | *
|
---|
73 | *
|
---|
74 | * @section sec_ssm_teleportation Teleportation
|
---|
75 | *
|
---|
76 | * As mentioned in the previous section, the main differences between this and
|
---|
77 | * live snapshots are in where the saved state is written and what state the
|
---|
78 | * local VM is in afterwards - at least from the VMM point of view. The
|
---|
79 | * necessary administrative work - establishing the connection to the remote
|
---|
80 | * machine, cloning the VM config on it and doing lowlevel saved state data
|
---|
81 | * transfer - is taken care of by layer above the VMM (i.e. Main).
|
---|
82 | *
|
---|
83 | * The SSM data format was made streamable for the purpose of teleportation
|
---|
84 | * (v1.2 was the last non-streamable version).
|
---|
85 | *
|
---|
86 | *
|
---|
87 | * @section sec_ssm_format Saved State Format
|
---|
88 | *
|
---|
89 | * The stream format starts with a header (SSMFILEHDR) that indicates the
|
---|
90 | * version and such things, it is followed by zero or more saved state units
|
---|
91 | * (name + instance + pass), and the stream concludes with a footer
|
---|
92 | * (SSMFILEFTR) that contains unit counts and optionally a checksum for the
|
---|
93 | * entire file. (In version 1.2 and earlier, the checksum was in the header and
|
---|
94 | * there was no footer. This meant that the header was updated after the entire
|
---|
95 | * file was written.)
|
---|
96 | *
|
---|
97 | * The saved state units each starts with a variable sized header
|
---|
98 | * (SSMFILEUNITHDRV2) that contains the name, instance and pass. The data
|
---|
99 | * follows the header and is encoded as records with a 2-8 byte record header
|
---|
100 | * indicating the type, flags and size. The first byte in the record header
|
---|
101 | * indicates the type and flags:
|
---|
102 | *
|
---|
103 | * - bits 0..3: Record type:
|
---|
104 | * - type 0: Invalid.
|
---|
105 | * - type 1: Terminator with CRC-32 and unit size.
|
---|
106 | * - type 2: Raw data record.
|
---|
107 | * - type 3: Raw data compressed by LZF. The data is prefixed by a 8-bit
|
---|
108 | * field containing the length of the uncompressed data given in
|
---|
109 | * 1KB units.
|
---|
110 | * - type 4: Zero data. The record header is followed by a 8-bit field
|
---|
111 | * counting the length of the zero data given in 1KB units.
|
---|
112 | * - type 5: Named data - length prefixed name followed by the data. This
|
---|
113 | * type is not implemented yet as we're missing the API part, so
|
---|
114 | * the type assignment is tentative.
|
---|
115 | * - types 6 thru 15 are current undefined.
|
---|
116 | * - bit 4: Important (set), can be skipped (clear).
|
---|
117 | * - bit 5: Undefined flag, must be zero.
|
---|
118 | * - bit 6: Undefined flag, must be zero.
|
---|
119 | * - bit 7: "magic" bit, always set.
|
---|
120 | *
|
---|
121 | * Record header byte 2 (optionally thru 7) is the size of the following data
|
---|
122 | * encoded in UTF-8 style. To make buffering simpler and more efficient during
|
---|
123 | * the save operation, the strict checks enforcing optimal encoding has been
|
---|
124 | * relaxed for the 2 and 3 byte encodings.
|
---|
125 | *
|
---|
126 | * (In version 1.2 and earlier the unit data was compressed and not record
|
---|
127 | * based. The unit header contained the compressed size of the data, i.e. it
|
---|
128 | * needed updating after the data was written.)
|
---|
129 | *
|
---|
130 | *
|
---|
131 | * @section sec_ssm_future Future Changes
|
---|
132 | *
|
---|
133 | * There are plans to extend SSM to make it easier to be both backwards and
|
---|
134 | * (somewhat) forwards compatible. One of the new features will be being able
|
---|
135 | * to classify units and data items as unimportant (added to the format in
|
---|
136 | * v2.0). Another suggested feature is naming data items (also added to the
|
---|
137 | * format in v2.0), perhaps by extending the SSMR3PutStruct API. Both features
|
---|
138 | * will require API changes, the naming may possibly require both buffering of
|
---|
139 | * the stream as well as some helper managing them.
|
---|
140 | */
|
---|
141 |
|
---|
142 |
|
---|
143 | /*******************************************************************************
|
---|
144 | * Header Files *
|
---|
145 | *******************************************************************************/
|
---|
146 | #define LOG_GROUP LOG_GROUP_SSM
|
---|
147 | #include <VBox/vmm/ssm.h>
|
---|
148 | #include <VBox/vmm/dbgf.h>
|
---|
149 | #include <VBox/vmm/pdmapi.h>
|
---|
150 | #include <VBox/vmm/pdmcritsect.h>
|
---|
151 | #include <VBox/vmm/mm.h>
|
---|
152 | #include "SSMInternal.h"
|
---|
153 | #include <VBox/vmm/vm.h>
|
---|
154 | #include <VBox/vmm/uvm.h>
|
---|
155 | #include <VBox/err.h>
|
---|
156 | #include <VBox/log.h>
|
---|
157 | #include <VBox/version.h>
|
---|
158 |
|
---|
159 | #include <iprt/asm.h>
|
---|
160 | #include <iprt/assert.h>
|
---|
161 | #include <iprt/crc.h>
|
---|
162 | #include <iprt/file.h>
|
---|
163 | #include <iprt/mem.h>
|
---|
164 | #include <iprt/param.h>
|
---|
165 | #include <iprt/thread.h>
|
---|
166 | #include <iprt/semaphore.h>
|
---|
167 | #include <iprt/string.h>
|
---|
168 | #include <iprt/uuid.h>
|
---|
169 | #include <iprt/zip.h>
|
---|
170 |
|
---|
171 |
|
---|
172 | /*******************************************************************************
|
---|
173 | * Defined Constants And Macros *
|
---|
174 | *******************************************************************************/
|
---|
175 | /** The max length of a unit name. */
|
---|
176 | #define SSM_MAX_NAME_SIZE 48
|
---|
177 |
|
---|
178 | /** Saved state file magic base string. */
|
---|
179 | #define SSMFILEHDR_MAGIC_BASE "\177VirtualBox SavedState "
|
---|
180 | /** Saved state file magic indicating version 1.x. */
|
---|
181 | #define SSMFILEHDR_MAGIC_V1_X "\177VirtualBox SavedState V1."
|
---|
182 | /** Saved state file v1.1 magic. */
|
---|
183 | #define SSMFILEHDR_MAGIC_V1_1 "\177VirtualBox SavedState V1.1\n"
|
---|
184 | /** Saved state file v1.2 magic. */
|
---|
185 | #define SSMFILEHDR_MAGIC_V1_2 "\177VirtualBox SavedState V1.2\n\0\0\0"
|
---|
186 | /** Saved state file v2.0 magic. */
|
---|
187 | #define SSMFILEHDR_MAGIC_V2_0 "\177VirtualBox SavedState V2.0\n\0\0\0"
|
---|
188 |
|
---|
189 | /** @name SSMFILEHDR::fFlags
|
---|
190 | * @{ */
|
---|
191 | /** The stream is checksummed up to the footer using CRC-32. */
|
---|
192 | #define SSMFILEHDR_FLAGS_STREAM_CRC32 RT_BIT_32(0)
|
---|
193 | /** Indicates that the file was produced by a live save. */
|
---|
194 | #define SSMFILEHDR_FLAGS_STREAM_LIVE_SAVE RT_BIT_32(1)
|
---|
195 | /** @} */
|
---|
196 |
|
---|
197 | /** The directory magic. */
|
---|
198 | #define SSMFILEDIR_MAGIC "\nDir\n\0\0"
|
---|
199 |
|
---|
200 | /** Saved state file v2.0 magic. */
|
---|
201 | #define SSMFILEFTR_MAGIC "\nFooter"
|
---|
202 |
|
---|
203 | /** Data unit magic. */
|
---|
204 | #define SSMFILEUNITHDR_MAGIC "\nUnit\n\0"
|
---|
205 | /** Data end marker magic. */
|
---|
206 | #define SSMFILEUNITHDR_END "\nTheEnd"
|
---|
207 |
|
---|
208 |
|
---|
209 | /** @name Record Types (data unit)
|
---|
210 | * @{ */
|
---|
211 | /** The record type mask. */
|
---|
212 | #define SSM_REC_TYPE_MASK UINT8_C(0x0f)
|
---|
213 | /** Invalid record. */
|
---|
214 | #define SSM_REC_TYPE_INVALID 0
|
---|
215 | /** Normal termination record, see SSMRECTERM. */
|
---|
216 | #define SSM_REC_TYPE_TERM 1
|
---|
217 | /** Raw data. The data follows the size field without further ado. */
|
---|
218 | #define SSM_REC_TYPE_RAW 2
|
---|
219 | /** Raw data compressed by LZF.
|
---|
220 | * The record header is followed by a 8-bit field containing the size of the
|
---|
221 | * uncompressed data in 1KB units. The compressed data is after it. */
|
---|
222 | #define SSM_REC_TYPE_RAW_LZF 3
|
---|
223 | /** Raw zero data.
|
---|
224 | * The record header is followed by a 8-bit field containing the size of the
|
---|
225 | * zero data in 1KB units. */
|
---|
226 | #define SSM_REC_TYPE_RAW_ZERO 4
|
---|
227 | /** Named data items.
|
---|
228 | * A length prefix zero terminated string (i.e. max 255) followed by the data. */
|
---|
229 | #define SSM_REC_TYPE_NAMED 5
|
---|
230 | /** Macro for validating the record type.
|
---|
231 | * This can be used with the flags+type byte, no need to mask out the type first. */
|
---|
232 | #define SSM_REC_TYPE_IS_VALID(u8Type) ( ((u8Type) & SSM_REC_TYPE_MASK) > SSM_REC_TYPE_INVALID \
|
---|
233 | && ((u8Type) & SSM_REC_TYPE_MASK) <= SSM_REC_TYPE_NAMED )
|
---|
234 | /** @} */
|
---|
235 |
|
---|
236 | /** The flag mask. */
|
---|
237 | #define SSM_REC_FLAGS_MASK UINT8_C(0xf0)
|
---|
238 | /** The record is important if this flag is set, if clear it can be omitted. */
|
---|
239 | #define SSM_REC_FLAGS_IMPORTANT UINT8_C(0x10)
|
---|
240 | /** This flag is always set. */
|
---|
241 | #define SSM_REC_FLAGS_FIXED UINT8_C(0x80)
|
---|
242 | /** Macro for validating the flags.
|
---|
243 | * No need to mask the flags out of the flags+type byte before invoking this macro. */
|
---|
244 | #define SSM_REC_FLAGS_ARE_VALID(fFlags) ( ((fFlags) & UINT8_C(0xe0)) == UINT8_C(0x80) )
|
---|
245 |
|
---|
246 | /** Macro for validating the type and flags byte in a data record. */
|
---|
247 | #define SSM_REC_ARE_TYPE_AND_FLAGS_VALID(u8) ( SSM_REC_FLAGS_ARE_VALID(u8) && SSM_REC_TYPE_IS_VALID(u8) )
|
---|
248 |
|
---|
249 | /** @name SSMRECTERM::fFlags
|
---|
250 | * @{ */
|
---|
251 | /** There is a CRC-32 value for the stream. */
|
---|
252 | #define SSMRECTERM_FLAGS_CRC32 UINT16_C(0x0001)
|
---|
253 | /** @} */
|
---|
254 |
|
---|
255 | /** Start structure magic. (Isaac Asimov) */
|
---|
256 | #define SSMR3STRUCT_BEGIN UINT32_C(0x19200102)
|
---|
257 | /** End structure magic. (Isaac Asimov) */
|
---|
258 | #define SSMR3STRUCT_END UINT32_C(0x19920406)
|
---|
259 |
|
---|
260 |
|
---|
261 | /** Number of bytes to log in Log2 and Log4 statements. */
|
---|
262 | #define SSM_LOG_BYTES 16
|
---|
263 |
|
---|
264 | /** SSMHANDLE::fCancelled value indicating that the operation has been
|
---|
265 | * cancelled. */
|
---|
266 | #define SSMHANDLE_CANCELLED UINT32_C(0xdeadbeef)
|
---|
267 | /** SSMHANDLE::fCancelled value indicating no cancellation. */
|
---|
268 | #define SSMHANDLE_OK UINT32_C(0x77777777)
|
---|
269 |
|
---|
270 |
|
---|
271 | /** Macro for checking the u32CRC field of a structure.
|
---|
272 | * The Msg can assume there are u32ActualCRC and u32CRC in the context. */
|
---|
273 | #define SSM_CHECK_CRC32_RET(p, cb, Msg) \
|
---|
274 | do \
|
---|
275 | { \
|
---|
276 | uint32_t u32CRC = (p)->u32CRC; \
|
---|
277 | (p)->u32CRC = 0; \
|
---|
278 | uint32_t u32ActualCRC = RTCrc32((p), (cb)); \
|
---|
279 | (p)->u32CRC = u32CRC; \
|
---|
280 | AssertLogRelMsgReturn(u32ActualCRC == u32CRC, Msg, VERR_SSM_INTEGRITY_CRC); \
|
---|
281 | } while (0)
|
---|
282 |
|
---|
283 | /** The number of bytes to compress is one block.
|
---|
284 | * Must be a multiple of 1KB. */
|
---|
285 | #define SSM_ZIP_BLOCK_SIZE _4K
|
---|
286 | AssertCompile(SSM_ZIP_BLOCK_SIZE / _1K * _1K == SSM_ZIP_BLOCK_SIZE);
|
---|
287 |
|
---|
288 |
|
---|
289 | /**
|
---|
290 | * Asserts that the handle is writable and returns with VERR_SSM_INVALID_STATE
|
---|
291 | * if it isn't.
|
---|
292 | */
|
---|
293 | #define SSM_ASSERT_WRITEABLE_RET(pSSM) \
|
---|
294 | AssertMsgReturn( pSSM->enmOp == SSMSTATE_SAVE_EXEC \
|
---|
295 | || pSSM->enmOp == SSMSTATE_LIVE_EXEC,\
|
---|
296 | ("Invalid state %d\n", pSSM->enmOp), VERR_SSM_INVALID_STATE);
|
---|
297 |
|
---|
298 | /**
|
---|
299 | * Asserts that the handle is readable and returns with VERR_SSM_INVALID_STATE
|
---|
300 | * if it isn't.
|
---|
301 | */
|
---|
302 | #define SSM_ASSERT_READABLE_RET(pSSM) \
|
---|
303 | AssertMsgReturn( pSSM->enmOp == SSMSTATE_LOAD_EXEC \
|
---|
304 | || pSSM->enmOp == SSMSTATE_OPEN_READ,\
|
---|
305 | ("Invalid state %d\n", pSSM->enmOp), VERR_SSM_INVALID_STATE);
|
---|
306 |
|
---|
307 | /** Checks for cancellation and returns if pending.
|
---|
308 | * Sets SSMHANDLE::rc to VERR_SSM_CANCELLED (if it still indicates success) and
|
---|
309 | * then returns SSMHANDLE::rc. (Debug logging only.) */
|
---|
310 | #define SSM_CHECK_CANCELLED_RET(pSSM) \
|
---|
311 | do \
|
---|
312 | { \
|
---|
313 | if (RT_UNLIKELY(ASMAtomicUoReadU32(&(pSSM)->fCancelled) == SSMHANDLE_CANCELLED)) \
|
---|
314 | { \
|
---|
315 | LogFlow(("%Rfn: Cancelled -> VERR_SSM_CANCELLED\n", __PRETTY_FUNCTION__)); \
|
---|
316 | if (RT_SUCCESS((pSSM)->rc)) \
|
---|
317 | (pSSM)->rc = VERR_SSM_CANCELLED; \
|
---|
318 | return (pSSM)->rc; \
|
---|
319 | } \
|
---|
320 | } while (0)
|
---|
321 |
|
---|
322 | /**
|
---|
323 | * Asserts that the handle is somewhat valid. No returns as this is just a
|
---|
324 | * simple safeguard for catching bad API calls. */
|
---|
325 | #define SSM_ASSERT_VALID_HANDLE(pSSM) \
|
---|
326 | do \
|
---|
327 | { \
|
---|
328 | AssertPtr(pSSM); \
|
---|
329 | Assert(pSSM->enmOp > SSMSTATE_INVALID && pSSM->enmOp < SSMSTATE_END); \
|
---|
330 | } while (0)
|
---|
331 |
|
---|
332 |
|
---|
333 | /** @def SSM_HOST_IS_MSC_32
|
---|
334 | * Set to 1 if the host is 32-bit MSC, otherwise set to 0.
|
---|
335 | * */
|
---|
336 | #if defined(_MSC_VER) && HC_ARCH_BITS == 32
|
---|
337 | # define SSM_HOST_IS_MSC_32 1
|
---|
338 | #else
|
---|
339 | # define SSM_HOST_IS_MSC_32 0
|
---|
340 | #endif
|
---|
341 |
|
---|
342 |
|
---|
343 |
|
---|
344 | /*******************************************************************************
|
---|
345 | * Structures and Typedefs *
|
---|
346 | *******************************************************************************/
|
---|
347 | /** SSM state. */
|
---|
348 | typedef enum SSMSTATE
|
---|
349 | {
|
---|
350 | SSMSTATE_INVALID = 0,
|
---|
351 | SSMSTATE_LIVE_PREP,
|
---|
352 | SSMSTATE_LIVE_STEP1,
|
---|
353 | SSMSTATE_LIVE_EXEC,
|
---|
354 | SSMSTATE_LIVE_VOTE,
|
---|
355 | SSMSTATE_LIVE_STEP2,
|
---|
356 | SSMSTATE_SAVE_PREP,
|
---|
357 | SSMSTATE_SAVE_EXEC,
|
---|
358 | SSMSTATE_SAVE_DONE,
|
---|
359 | SSMSTATE_LOAD_PREP,
|
---|
360 | SSMSTATE_LOAD_EXEC,
|
---|
361 | SSMSTATE_LOAD_DONE,
|
---|
362 | SSMSTATE_OPEN_READ,
|
---|
363 | SSMSTATE_END
|
---|
364 | } SSMSTATE;
|
---|
365 |
|
---|
366 |
|
---|
367 | /** Pointer to a SSM stream buffer. */
|
---|
368 | typedef struct SSMSTRMBUF *PSSMSTRMBUF;
|
---|
369 | /**
|
---|
370 | * A SSM stream buffer.
|
---|
371 | */
|
---|
372 | typedef struct SSMSTRMBUF
|
---|
373 | {
|
---|
374 | /** The buffer data. */
|
---|
375 | uint8_t abData[_64K];
|
---|
376 |
|
---|
377 | /** The stream position of this buffer. */
|
---|
378 | uint64_t offStream;
|
---|
379 | /** The amount of buffered data. */
|
---|
380 | uint32_t cb;
|
---|
381 | /** End of stream indicator (for read streams only). */
|
---|
382 | bool fEndOfStream;
|
---|
383 | /** The nano timestamp set by ssmR3StrmGetFreeBuf. */
|
---|
384 | uint64_t NanoTS;
|
---|
385 | /** Pointer to the next buffer in the chain. */
|
---|
386 | PSSMSTRMBUF volatile pNext;
|
---|
387 | } SSMSTRMBUF;
|
---|
388 |
|
---|
389 | /**
|
---|
390 | * SSM stream.
|
---|
391 | *
|
---|
392 | * This is a typical producer / consumer setup with a dedicated I/O thread and
|
---|
393 | * fixed number of buffers for read ahead and write back.
|
---|
394 | */
|
---|
395 | typedef struct SSMSTRM
|
---|
396 | {
|
---|
397 | /** The stream method table. */
|
---|
398 | PCSSMSTRMOPS pOps;
|
---|
399 | /** The user argument for the stream methods.
|
---|
400 | * For file based streams, this is the file handle and not a pointer. */
|
---|
401 | void *pvUser;
|
---|
402 |
|
---|
403 | /** Write (set) or read (clear) stream. */
|
---|
404 | bool fWrite;
|
---|
405 | /** Termination indicator. */
|
---|
406 | bool volatile fTerminating;
|
---|
407 | /** Indicates whether it is necessary to seek before the next buffer is
|
---|
408 | * read from the stream. This is used to avoid a seek in ssmR3StrmPeekAt. */
|
---|
409 | bool fNeedSeek;
|
---|
410 | /** Stream error status. */
|
---|
411 | int32_t volatile rc;
|
---|
412 | /** The handle of the I/O thread. This is set to nil when not active. */
|
---|
413 | RTTHREAD hIoThread;
|
---|
414 | /** Where to seek to. */
|
---|
415 | uint64_t offNeedSeekTo;
|
---|
416 |
|
---|
417 | /** The head of the consumer queue.
|
---|
418 | * For save the consumer is the I/O thread. For load the I/O thread is the
|
---|
419 | * producer. */
|
---|
420 | PSSMSTRMBUF volatile pHead;
|
---|
421 | /** Chain of free buffers.
|
---|
422 | * The consumer/producer roles are the inverse of pHead. */
|
---|
423 | PSSMSTRMBUF volatile pFree;
|
---|
424 | /** Event that's signalled when pHead is updated. */
|
---|
425 | RTSEMEVENT hEvtHead;
|
---|
426 | /** Event that's signalled when pFree is updated. */
|
---|
427 | RTSEMEVENT hEvtFree;
|
---|
428 |
|
---|
429 | /** List of pending buffers that has been dequeued from pHead and reversed. */
|
---|
430 | PSSMSTRMBUF pPending;
|
---|
431 | /** Pointer to the current buffer. */
|
---|
432 | PSSMSTRMBUF pCur;
|
---|
433 | /** The stream offset of the current buffer. */
|
---|
434 | uint64_t offCurStream;
|
---|
435 | /** The current buffer offset. */
|
---|
436 | uint32_t off;
|
---|
437 | /** Whether we're checksumming reads/writes. */
|
---|
438 | bool fChecksummed;
|
---|
439 | /** The stream CRC if fChecksummed is set. */
|
---|
440 | uint32_t u32StreamCRC;
|
---|
441 | /** How far into the buffer u32StreamCRC is up-to-date.
|
---|
442 | * This may lag behind off as it's desirable to checksum as large blocks as
|
---|
443 | * possible. */
|
---|
444 | uint32_t offStreamCRC;
|
---|
445 | } SSMSTRM;
|
---|
446 | /** Pointer to a SSM stream. */
|
---|
447 | typedef SSMSTRM *PSSMSTRM;
|
---|
448 |
|
---|
449 |
|
---|
450 | /**
|
---|
451 | * Handle structure.
|
---|
452 | */
|
---|
453 | typedef struct SSMHANDLE
|
---|
454 | {
|
---|
455 | /** Stream/buffer manager. */
|
---|
456 | SSMSTRM Strm;
|
---|
457 |
|
---|
458 | /** Pointer to the VM. */
|
---|
459 | PVM pVM;
|
---|
460 | /** The current operation. */
|
---|
461 | SSMSTATE enmOp;
|
---|
462 | /** What to do after save completes. (move the enum) */
|
---|
463 | SSMAFTER enmAfter;
|
---|
464 | /** Flag indicating that the operation has been cancelled. */
|
---|
465 | uint32_t volatile fCancelled;
|
---|
466 | /** The current rc of the save operation. */
|
---|
467 | int32_t rc;
|
---|
468 | /** Number of compressed bytes left in the current data unit (V1). */
|
---|
469 | uint64_t cbUnitLeftV1;
|
---|
470 | /** The current compressed? offset into the data unit. */
|
---|
471 | uint64_t offUnit;
|
---|
472 | /** The current user data offset into the unit (debug purposes). */
|
---|
473 | uint64_t offUnitUser;
|
---|
474 | /** Indicates that this is a live save or restore operation. */
|
---|
475 | bool fLiveSave;
|
---|
476 |
|
---|
477 | /** Pointer to the progress callback function. */
|
---|
478 | PFNVMPROGRESS pfnProgress;
|
---|
479 | /** User specified argument to the callback function. */
|
---|
480 | void *pvUser;
|
---|
481 | /** Next completion percentage. (corresponds to offEstProgress) */
|
---|
482 | unsigned uPercent;
|
---|
483 | /** The position of the next progress callback in the estimated file. */
|
---|
484 | uint64_t offEstProgress;
|
---|
485 | /** The estimated total byte count.
|
---|
486 | * (Only valid after the prep.) */
|
---|
487 | uint64_t cbEstTotal;
|
---|
488 | /** Current position in the estimated file. */
|
---|
489 | uint64_t offEst;
|
---|
490 | /** End of current unit in the estimated file. */
|
---|
491 | uint64_t offEstUnitEnd;
|
---|
492 | /** The amount of % we reserve for the 'live' stage */
|
---|
493 | unsigned uPercentLive;
|
---|
494 | /** The amount of % we reserve for the 'prepare' phase */
|
---|
495 | unsigned uPercentPrepare;
|
---|
496 | /** The amount of % we reserve for the 'done' stage */
|
---|
497 | unsigned uPercentDone;
|
---|
498 | /** The lowest value reported via SSMR3HandleReportLivePercent during one
|
---|
499 | * vote run. */
|
---|
500 | unsigned uReportedLivePercent;
|
---|
501 | /** The filename, NULL if remote stream. */
|
---|
502 | const char *pszFilename;
|
---|
503 |
|
---|
504 | union
|
---|
505 | {
|
---|
506 | /** Write data. */
|
---|
507 | struct
|
---|
508 | {
|
---|
509 | /** Offset into the databuffer. */
|
---|
510 | uint32_t offDataBuffer;
|
---|
511 | /** Space for the record header. */
|
---|
512 | uint8_t abRecHdr[1+7];
|
---|
513 | /** Data buffer. */
|
---|
514 | uint8_t abDataBuffer[4096];
|
---|
515 | /** The maximum downtime given as milliseconds. */
|
---|
516 | uint32_t cMsMaxDowntime;
|
---|
517 | } Write;
|
---|
518 |
|
---|
519 | /** Read data. */
|
---|
520 | struct
|
---|
521 | {
|
---|
522 | /** V1: The decompressor of the current data unit. */
|
---|
523 | PRTZIPDECOMP pZipDecompV1;
|
---|
524 | /** The major format version number. */
|
---|
525 | uint32_t uFmtVerMajor;
|
---|
526 | /** The minor format version number. */
|
---|
527 | uint32_t uFmtVerMinor;
|
---|
528 |
|
---|
529 | /** V2: Unread bytes in the current record. */
|
---|
530 | uint32_t cbRecLeft;
|
---|
531 | /** V2: Bytes in the data buffer. */
|
---|
532 | uint32_t cbDataBuffer;
|
---|
533 | /** V2: Current buffer position. */
|
---|
534 | uint32_t offDataBuffer;
|
---|
535 | /** V2: End of data indicator. */
|
---|
536 | bool fEndOfData;
|
---|
537 | /** V2: The type and flags byte fo the current record. */
|
---|
538 | uint8_t u8TypeAndFlags;
|
---|
539 |
|
---|
540 | /** @name Context info for SSMR3SetLoadError.
|
---|
541 | * @{ */
|
---|
542 | /** Pointer to the header for the current unit. */
|
---|
543 | PSSMUNIT pCurUnit;
|
---|
544 | /** The version of the current unit if in the load exec stage. */
|
---|
545 | uint32_t uCurUnitVer;
|
---|
546 | /** The pass number of the current unit if in the load exec stage. */
|
---|
547 | uint32_t uCurUnitPass;
|
---|
548 | /** Whether SSMR3SetLoadError[V] has been called.
|
---|
549 | * @note Using ASMAtomicXchgBool because I'm very lazy. */
|
---|
550 | bool volatile fHaveSetError;
|
---|
551 | /** @} */
|
---|
552 |
|
---|
553 | /** RTGCPHYS size in bytes. (Only applicable when loading/reading.) */
|
---|
554 | unsigned cbGCPhys;
|
---|
555 | /** RTGCPTR size in bytes. (Only applicable when loading/reading.) */
|
---|
556 | unsigned cbGCPtr;
|
---|
557 | /** Whether cbGCPtr is fixed or settable. */
|
---|
558 | bool fFixedGCPtrSize;
|
---|
559 |
|
---|
560 | /** 32-bit MSC saved this? */
|
---|
561 | bool fIsHostMsc32;
|
---|
562 | /** "Host OS" dot "architecture", picked up from recent SSM data units. */
|
---|
563 | char szHostOSAndArch[32];
|
---|
564 |
|
---|
565 | /** @name Header info (set by ssmR3ValidateFile)
|
---|
566 | * @{ */
|
---|
567 | /** The size of the file header. */
|
---|
568 | uint32_t cbFileHdr;
|
---|
569 | /** The major version number. */
|
---|
570 | uint16_t u16VerMajor;
|
---|
571 | /** The minor version number. */
|
---|
572 | uint16_t u16VerMinor;
|
---|
573 | /** The build number. */
|
---|
574 | uint32_t u32VerBuild;
|
---|
575 | /** The SVN revision. */
|
---|
576 | uint32_t u32SvnRev;
|
---|
577 | /** 32 or 64 depending on the host. */
|
---|
578 | uint8_t cHostBits;
|
---|
579 | /** Whether the stream is checksummed (SSMFILEHDR_FLAGS_STREAM_CRC32). */
|
---|
580 | bool fStreamCrc32;
|
---|
581 | /** The CRC of the loaded file. */
|
---|
582 | uint32_t u32LoadCRC;
|
---|
583 | /** The size of the load file. */
|
---|
584 | uint64_t cbLoadFile;
|
---|
585 | /** @} */
|
---|
586 |
|
---|
587 | /** V2: Data buffer.
|
---|
588 | * @remarks Be extremely careful when changing the size of this buffer! */
|
---|
589 | uint8_t abDataBuffer[4096];
|
---|
590 |
|
---|
591 | /** V2: Decompression buffer for when we cannot use the stream buffer. */
|
---|
592 | uint8_t abComprBuffer[4096];
|
---|
593 | } Read;
|
---|
594 | } u;
|
---|
595 | } SSMHANDLE;
|
---|
596 |
|
---|
597 |
|
---|
598 | /**
|
---|
599 | * Header of the saved state file.
|
---|
600 | *
|
---|
601 | * Added in r5xxxx on 2009-07-2?, VirtualBox v3.0.51.
|
---|
602 | */
|
---|
603 | typedef struct SSMFILEHDR
|
---|
604 | {
|
---|
605 | /** Magic string which identifies this file as a version of VBox saved state
|
---|
606 | * file format (SSMFILEHDR_MAGIC_V2_0). */
|
---|
607 | char szMagic[32];
|
---|
608 | /** The major version number. */
|
---|
609 | uint16_t u16VerMajor;
|
---|
610 | /** The minor version number. */
|
---|
611 | uint16_t u16VerMinor;
|
---|
612 | /** The build number. */
|
---|
613 | uint32_t u32VerBuild;
|
---|
614 | /** The SVN revision. */
|
---|
615 | uint32_t u32SvnRev;
|
---|
616 | /** 32 or 64 depending on the host. */
|
---|
617 | uint8_t cHostBits;
|
---|
618 | /** The size of RTGCPHYS. */
|
---|
619 | uint8_t cbGCPhys;
|
---|
620 | /** The size of RTGCPTR. */
|
---|
621 | uint8_t cbGCPtr;
|
---|
622 | /** Reserved header space - must be zero. */
|
---|
623 | uint8_t u8Reserved;
|
---|
624 | /** The number of units that (may) have stored data in the file. */
|
---|
625 | uint32_t cUnits;
|
---|
626 | /** Flags, see SSMFILEHDR_FLAGS_XXX. */
|
---|
627 | uint32_t fFlags;
|
---|
628 | /** The maximum size of decompressed data. */
|
---|
629 | uint32_t cbMaxDecompr;
|
---|
630 | /** The checksum of this header.
|
---|
631 | * This field is set to zero when calculating the checksum. */
|
---|
632 | uint32_t u32CRC;
|
---|
633 | } SSMFILEHDR;
|
---|
634 | AssertCompileSize(SSMFILEHDR, 64);
|
---|
635 | AssertCompileMemberOffset(SSMFILEHDR, u32CRC, 60);
|
---|
636 | AssertCompileMemberSize(SSMFILEHDR, szMagic, sizeof(SSMFILEHDR_MAGIC_V2_0));
|
---|
637 | /** Pointer to a saved state file header. */
|
---|
638 | typedef SSMFILEHDR *PSSMFILEHDR;
|
---|
639 | /** Pointer to a const saved state file header. */
|
---|
640 | typedef SSMFILEHDR const *PCSSMFILEHDR;
|
---|
641 |
|
---|
642 |
|
---|
643 | /**
|
---|
644 | * Header of the saved state file.
|
---|
645 | *
|
---|
646 | * Added in r40980 on 2008-12-15, VirtualBox v2.0.51.
|
---|
647 | *
|
---|
648 | * @remarks This is a superset of SSMFILEHDRV11.
|
---|
649 | */
|
---|
650 | typedef struct SSMFILEHDRV12
|
---|
651 | {
|
---|
652 | /** Magic string which identifies this file as a version of VBox saved state
|
---|
653 | * file format (SSMFILEHDR_MAGIC_V1_2). */
|
---|
654 | char achMagic[32];
|
---|
655 | /** The size of this file. Used to check
|
---|
656 | * whether the save completed and that things are fine otherwise. */
|
---|
657 | uint64_t cbFile;
|
---|
658 | /** File checksum. The actual calculation skips past the u32CRC field. */
|
---|
659 | uint32_t u32CRC;
|
---|
660 | /** Padding. */
|
---|
661 | uint32_t u32Reserved;
|
---|
662 | /** The machine UUID. (Ignored if NIL.) */
|
---|
663 | RTUUID MachineUuid;
|
---|
664 |
|
---|
665 | /** The major version number. */
|
---|
666 | uint16_t u16VerMajor;
|
---|
667 | /** The minor version number. */
|
---|
668 | uint16_t u16VerMinor;
|
---|
669 | /** The build number. */
|
---|
670 | uint32_t u32VerBuild;
|
---|
671 | /** The SVN revision. */
|
---|
672 | uint32_t u32SvnRev;
|
---|
673 |
|
---|
674 | /** 32 or 64 depending on the host. */
|
---|
675 | uint8_t cHostBits;
|
---|
676 | /** The size of RTGCPHYS. */
|
---|
677 | uint8_t cbGCPhys;
|
---|
678 | /** The size of RTGCPTR. */
|
---|
679 | uint8_t cbGCPtr;
|
---|
680 | /** Padding. */
|
---|
681 | uint8_t au8Reserved;
|
---|
682 | } SSMFILEHDRV12;
|
---|
683 | AssertCompileSize(SSMFILEHDRV12, 64+16);
|
---|
684 | AssertCompileMemberOffset(SSMFILEHDRV12, u32CRC, 40);
|
---|
685 | AssertCompileMemberSize(SSMFILEHDRV12, achMagic, sizeof(SSMFILEHDR_MAGIC_V1_2));
|
---|
686 | /** Pointer to a saved state file header. */
|
---|
687 | typedef SSMFILEHDRV12 *PSSMFILEHDRV12;
|
---|
688 |
|
---|
689 |
|
---|
690 | /**
|
---|
691 | * Header of the saved state file, version 1.1.
|
---|
692 | *
|
---|
693 | * Added in r23677 on 2007-08-17, VirtualBox v1.4.1.
|
---|
694 | */
|
---|
695 | typedef struct SSMFILEHDRV11
|
---|
696 | {
|
---|
697 | /** Magic string which identifies this file as a version of VBox saved state
|
---|
698 | * file format (SSMFILEHDR_MAGIC_V1_1). */
|
---|
699 | char achMagic[32];
|
---|
700 | /** The size of this file. Used to check
|
---|
701 | * whether the save completed and that things are fine otherwise. */
|
---|
702 | uint64_t cbFile;
|
---|
703 | /** File checksum. The actual calculation skips past the u32CRC field. */
|
---|
704 | uint32_t u32CRC;
|
---|
705 | /** Padding. */
|
---|
706 | uint32_t u32Reserved;
|
---|
707 | /** The machine UUID. (Ignored if NIL.) */
|
---|
708 | RTUUID MachineUuid;
|
---|
709 | } SSMFILEHDRV11;
|
---|
710 | AssertCompileSize(SSMFILEHDRV11, 64);
|
---|
711 | AssertCompileMemberOffset(SSMFILEHDRV11, u32CRC, 40);
|
---|
712 | /** Pointer to a saved state file header. */
|
---|
713 | typedef SSMFILEHDRV11 *PSSMFILEHDRV11;
|
---|
714 |
|
---|
715 |
|
---|
716 | /**
|
---|
717 | * Data unit header.
|
---|
718 | */
|
---|
719 | typedef struct SSMFILEUNITHDRV2
|
---|
720 | {
|
---|
721 | /** Magic (SSMFILEUNITHDR_MAGIC or SSMFILEUNITHDR_END). */
|
---|
722 | char szMagic[8];
|
---|
723 | /** The offset in the saved state stream of the start of this unit.
|
---|
724 | * This is mainly intended for sanity checking. */
|
---|
725 | uint64_t offStream;
|
---|
726 | /** The CRC-in-progress value this unit starts at. */
|
---|
727 | uint32_t u32CurStreamCRC;
|
---|
728 | /** The checksum of this structure, including the whole name.
|
---|
729 | * Calculated with this field set to zero. */
|
---|
730 | uint32_t u32CRC;
|
---|
731 | /** Data version. */
|
---|
732 | uint32_t u32Version;
|
---|
733 | /** Instance number. */
|
---|
734 | uint32_t u32Instance;
|
---|
735 | /** Data pass number. */
|
---|
736 | uint32_t u32Pass;
|
---|
737 | /** Flags reserved for future extensions. Must be zero. */
|
---|
738 | uint32_t fFlags;
|
---|
739 | /** Size of the data unit name including the terminator. (bytes) */
|
---|
740 | uint32_t cbName;
|
---|
741 | /** Data unit name, variable size. */
|
---|
742 | char szName[SSM_MAX_NAME_SIZE];
|
---|
743 | } SSMFILEUNITHDRV2;
|
---|
744 | AssertCompileMemberOffset(SSMFILEUNITHDRV2, szName, 44);
|
---|
745 | AssertCompileMemberSize(SSMFILEUNITHDRV2, szMagic, sizeof(SSMFILEUNITHDR_MAGIC));
|
---|
746 | AssertCompileMemberSize(SSMFILEUNITHDRV2, szMagic, sizeof(SSMFILEUNITHDR_END));
|
---|
747 | /** Pointer to SSMFILEUNITHDRV2. */
|
---|
748 | typedef SSMFILEUNITHDRV2 *PSSMFILEUNITHDRV2;
|
---|
749 |
|
---|
750 |
|
---|
751 | /**
|
---|
752 | * Data unit header.
|
---|
753 | *
|
---|
754 | * This is used by v1.0, v1.1 and v1.2 of the format.
|
---|
755 | */
|
---|
756 | typedef struct SSMFILEUNITHDRV1
|
---|
757 | {
|
---|
758 | /** Magic (SSMFILEUNITHDR_MAGIC or SSMFILEUNITHDR_END). */
|
---|
759 | char achMagic[8];
|
---|
760 | /** Number of bytes in this data unit including the header. */
|
---|
761 | uint64_t cbUnit;
|
---|
762 | /** Data version. */
|
---|
763 | uint32_t u32Version;
|
---|
764 | /** Instance number. */
|
---|
765 | uint32_t u32Instance;
|
---|
766 | /** Size of the data unit name including the terminator. (bytes) */
|
---|
767 | uint32_t cchName;
|
---|
768 | /** Data unit name. */
|
---|
769 | char szName[1];
|
---|
770 | } SSMFILEUNITHDRV1;
|
---|
771 | /** Pointer to SSMFILEUNITHDR. */
|
---|
772 | typedef SSMFILEUNITHDRV1 *PSSMFILEUNITHDRV1;
|
---|
773 |
|
---|
774 |
|
---|
775 | /**
|
---|
776 | * Termination data record.
|
---|
777 | */
|
---|
778 | typedef struct SSMRECTERM
|
---|
779 | {
|
---|
780 | uint8_t u8TypeAndFlags;
|
---|
781 | /** The record size (sizeof(SSMRECTERM) - 2). */
|
---|
782 | uint8_t cbRec;
|
---|
783 | /** Flags, see SSMRECTERM_FLAGS_CRC32. */
|
---|
784 | uint16_t fFlags;
|
---|
785 | /** The checksum of the stream up to fFlags (exclusive). */
|
---|
786 | uint32_t u32StreamCRC;
|
---|
787 | /** The length of this data unit in bytes (including this record). */
|
---|
788 | uint64_t cbUnit;
|
---|
789 | } SSMRECTERM;
|
---|
790 | AssertCompileSize(SSMRECTERM, 16);
|
---|
791 | AssertCompileMemberAlignment(SSMRECTERM, cbUnit, 8);
|
---|
792 | /** Pointer to a termination record. */
|
---|
793 | typedef SSMRECTERM *PSSMRECTERM;
|
---|
794 | /** Pointer to a const termination record. */
|
---|
795 | typedef SSMRECTERM const *PCSSMRECTERM;
|
---|
796 |
|
---|
797 |
|
---|
798 | /**
|
---|
799 | * Directory entry.
|
---|
800 | */
|
---|
801 | typedef struct SSMFILEDIRENTRY
|
---|
802 | {
|
---|
803 | /** The offset of the data unit. */
|
---|
804 | uint64_t off;
|
---|
805 | /** The instance number. */
|
---|
806 | uint32_t u32Instance;
|
---|
807 | /** The CRC-32 of the name excluding the terminator. (lazy bird) */
|
---|
808 | uint32_t u32NameCRC;
|
---|
809 | } SSMFILEDIRENTRY;
|
---|
810 | AssertCompileSize(SSMFILEDIRENTRY, 16);
|
---|
811 | /** Pointer to a directory entry. */
|
---|
812 | typedef SSMFILEDIRENTRY *PSSMFILEDIRENTRY;
|
---|
813 | /** Pointer to a const directory entry. */
|
---|
814 | typedef SSMFILEDIRENTRY const *PCSSMFILEDIRENTRY;
|
---|
815 |
|
---|
816 | /**
|
---|
817 | * Directory for the data units from the final pass.
|
---|
818 | *
|
---|
819 | * This is used to speed up SSMR3Seek (it would have to decompress and parse the
|
---|
820 | * whole stream otherwise).
|
---|
821 | */
|
---|
822 | typedef struct SSMFILEDIR
|
---|
823 | {
|
---|
824 | /** Magic string (SSMFILEDIR_MAGIC). */
|
---|
825 | char szMagic[8];
|
---|
826 | /** The CRC-32 for the whole directory.
|
---|
827 | * Calculated with this field set to zero. */
|
---|
828 | uint32_t u32CRC;
|
---|
829 | /** The number of directory entries. */
|
---|
830 | uint32_t cEntries;
|
---|
831 | /** The directory entries (variable size). */
|
---|
832 | SSMFILEDIRENTRY aEntries[1];
|
---|
833 | } SSMFILEDIR;
|
---|
834 | AssertCompileSize(SSMFILEDIR, 32);
|
---|
835 | /** Pointer to a directory. */
|
---|
836 | typedef SSMFILEDIR *PSSMFILEDIR;
|
---|
837 | /** Pointer to a const directory. */
|
---|
838 | typedef SSMFILEDIR *PSSMFILEDIR;
|
---|
839 |
|
---|
840 |
|
---|
841 | /**
|
---|
842 | * Footer structure
|
---|
843 | */
|
---|
844 | typedef struct SSMFILEFTR
|
---|
845 | {
|
---|
846 | /** Magic string (SSMFILEFTR_MAGIC). */
|
---|
847 | char szMagic[8];
|
---|
848 | /** The offset of this record in the stream. */
|
---|
849 | uint64_t offStream;
|
---|
850 | /** The CRC for the stream.
|
---|
851 | * This is set to zero if SSMFILEHDR_FLAGS_STREAM_CRC32 is clear. */
|
---|
852 | uint32_t u32StreamCRC;
|
---|
853 | /** Number directory entries. */
|
---|
854 | uint32_t cDirEntries;
|
---|
855 | /** Reserved footer space - must be zero. */
|
---|
856 | uint32_t u32Reserved;
|
---|
857 | /** The CRC-32 for this structure.
|
---|
858 | * Calculated with this field set to zero. */
|
---|
859 | uint32_t u32CRC;
|
---|
860 | } SSMFILEFTR;
|
---|
861 | AssertCompileSize(SSMFILEFTR, 32);
|
---|
862 | /** Pointer to a footer. */
|
---|
863 | typedef SSMFILEFTR *PSSMFILEFTR;
|
---|
864 | /** Pointer to a const footer. */
|
---|
865 | typedef SSMFILEFTR const *PCSSMFILEFTR;
|
---|
866 |
|
---|
867 |
|
---|
868 | /*******************************************************************************
|
---|
869 | * Global Variables *
|
---|
870 | *******************************************************************************/
|
---|
871 | /** Zeros used by the struct putter.
|
---|
872 | * This must be at least 8 bytes or the code breaks. */
|
---|
873 | static uint8_t const g_abZero[_1K] = {0};
|
---|
874 |
|
---|
875 |
|
---|
876 | /*******************************************************************************
|
---|
877 | * Internal Functions *
|
---|
878 | *******************************************************************************/
|
---|
879 | #ifndef SSM_STANDALONE
|
---|
880 | static int ssmR3LazyInit(PVM pVM);
|
---|
881 | static DECLCALLBACK(int) ssmR3SelfLiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass);
|
---|
882 | static DECLCALLBACK(int) ssmR3SelfSaveExec(PVM pVM, PSSMHANDLE pSSM);
|
---|
883 | static DECLCALLBACK(int) ssmR3SelfLoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
|
---|
884 | static DECLCALLBACK(int) ssmR3LiveControlLoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
|
---|
885 | static int ssmR3Register(PVM pVM, const char *pszName, uint32_t uInstance, uint32_t uVersion, size_t cbGuess, const char *pszBefore, PSSMUNIT *ppUnit);
|
---|
886 | static int ssmR3LiveControlEmit(PSSMHANDLE pSSM, long double lrdPct, uint32_t uPass);
|
---|
887 | #endif
|
---|
888 |
|
---|
889 | static int ssmR3StrmWriteBuffers(PSSMSTRM pStrm);
|
---|
890 | static int ssmR3StrmReadMore(PSSMSTRM pStrm);
|
---|
891 |
|
---|
892 | #ifndef SSM_STANDALONE
|
---|
893 | static int ssmR3DataFlushBuffer(PSSMHANDLE pSSM);
|
---|
894 | #endif
|
---|
895 | static int ssmR3DataReadRecHdrV2(PSSMHANDLE pSSM);
|
---|
896 |
|
---|
897 |
|
---|
898 | #ifndef SSM_STANDALONE
|
---|
899 |
|
---|
900 | /**
|
---|
901 | * Cleans up resources allocated by SSM on VM termination.
|
---|
902 | *
|
---|
903 | * @param pVM Pointer to the VM.
|
---|
904 | */
|
---|
905 | VMMR3_INT_DECL(void) SSMR3Term(PVM pVM)
|
---|
906 | {
|
---|
907 | if (pVM->ssm.s.fInitialized)
|
---|
908 | {
|
---|
909 | pVM->ssm.s.fInitialized = false;
|
---|
910 | RTCritSectDelete(&pVM->ssm.s.CancelCritSect);
|
---|
911 | }
|
---|
912 | }
|
---|
913 |
|
---|
914 |
|
---|
915 | /**
|
---|
916 | * Performs lazy initialization of the SSM.
|
---|
917 | *
|
---|
918 | * @returns VBox status code.
|
---|
919 | * @param pVM The VM.
|
---|
920 | */
|
---|
921 | static int ssmR3LazyInit(PVM pVM)
|
---|
922 | {
|
---|
923 | /*
|
---|
924 | * Register a saved state unit which we use to put the VirtualBox version,
|
---|
925 | * revision and similar stuff in.
|
---|
926 | */
|
---|
927 | pVM->ssm.s.fInitialized = true;
|
---|
928 | int rc = SSMR3RegisterInternal(pVM, "SSM", 0 /*uInstance*/, 1 /*uVersion*/, 64 /*cbGuess*/,
|
---|
929 | NULL /*pfnLivePrep*/, ssmR3SelfLiveExec, NULL /*pfnLiveVote*/,
|
---|
930 | NULL /*pfnSavePrep*/, ssmR3SelfSaveExec, NULL /*pfnSaveDone*/,
|
---|
931 | NULL /*pfnSavePrep*/, ssmR3SelfLoadExec, NULL /*pfnSaveDone*/);
|
---|
932 | if (RT_SUCCESS(rc))
|
---|
933 | rc = SSMR3RegisterInternal(pVM, "SSMLiveControl", 0 /*uInstance*/, 1 /*uVersion*/, 1 /*cbGuess*/,
|
---|
934 | NULL /*pfnLivePrep*/, NULL /*pfnLiveExec*/, NULL /*pfnLiveVote*/,
|
---|
935 | NULL /*pfnSavePrep*/, NULL /*pfnSaveExec*/, NULL /*pfnSaveDone*/,
|
---|
936 | NULL /*pfnSavePrep*/, ssmR3LiveControlLoadExec, NULL /*pfnSaveDone*/);
|
---|
937 |
|
---|
938 | /*
|
---|
939 | * Initialize the cancellation critsect now.
|
---|
940 | */
|
---|
941 | if (RT_SUCCESS(rc))
|
---|
942 | rc = RTCritSectInit(&pVM->ssm.s.CancelCritSect);
|
---|
943 | if (RT_SUCCESS(rc))
|
---|
944 | {
|
---|
945 | STAM_REL_REG_USED(pVM, &pVM->ssm.s.uPass, STAMTYPE_U32, "/SSM/uPass", STAMUNIT_COUNT, "Current pass");
|
---|
946 | }
|
---|
947 |
|
---|
948 | pVM->ssm.s.fInitialized = RT_SUCCESS(rc);
|
---|
949 | return rc;
|
---|
950 | }
|
---|
951 |
|
---|
952 |
|
---|
953 | /**
|
---|
954 | * Do ssmR3SelfSaveExec in pass 0.
|
---|
955 | *
|
---|
956 | * @returns VBox status code.
|
---|
957 | * @param pVM Pointer to the VM.
|
---|
958 | * @param pSSM The SSM handle.
|
---|
959 | * @param uPass The data pass number.
|
---|
960 | */
|
---|
961 | static DECLCALLBACK(int) ssmR3SelfLiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
|
---|
962 | {
|
---|
963 | if (uPass == 0)
|
---|
964 | {
|
---|
965 | int rc = ssmR3SelfSaveExec(pVM, pSSM);
|
---|
966 | if (RT_SUCCESS(rc))
|
---|
967 | rc = VINF_SSM_DONT_CALL_AGAIN;
|
---|
968 | return rc;
|
---|
969 | }
|
---|
970 | AssertFailed();
|
---|
971 | return VERR_SSM_UNEXPECTED_PASS;
|
---|
972 | }
|
---|
973 |
|
---|
974 |
|
---|
975 | /**
|
---|
976 | * For saving usful things without having to go thru the tedious process of
|
---|
977 | * adding it to the header.
|
---|
978 | *
|
---|
979 | * @returns VBox status code.
|
---|
980 | * @param pVM Pointer to the VM.
|
---|
981 | * @param pSSM The SSM handle.
|
---|
982 | */
|
---|
983 | static DECLCALLBACK(int) ssmR3SelfSaveExec(PVM pVM, PSSMHANDLE pSSM)
|
---|
984 | {
|
---|
985 | NOREF(pVM);
|
---|
986 |
|
---|
987 | /*
|
---|
988 | * String table containing pairs of variable and value string.
|
---|
989 | * Terminated by two empty strings.
|
---|
990 | */
|
---|
991 | SSMR3PutStrZ(pSSM, "Build Type");
|
---|
992 | SSMR3PutStrZ(pSSM, KBUILD_TYPE);
|
---|
993 | SSMR3PutStrZ(pSSM, "Host OS");
|
---|
994 | SSMR3PutStrZ(pSSM, KBUILD_TARGET "." KBUILD_TARGET_ARCH);
|
---|
995 | #ifdef VBOX_OSE
|
---|
996 | SSMR3PutStrZ(pSSM, "OSE");
|
---|
997 | SSMR3PutStrZ(pSSM, "true");
|
---|
998 | #endif
|
---|
999 |
|
---|
1000 | /* terminator */
|
---|
1001 | SSMR3PutStrZ(pSSM, "");
|
---|
1002 | return SSMR3PutStrZ(pSSM, "");
|
---|
1003 | }
|
---|
1004 |
|
---|
1005 |
|
---|
1006 | /**
|
---|
1007 | * For load the version + revision and stuff.
|
---|
1008 | *
|
---|
1009 | * @returns VBox status code.
|
---|
1010 | * @param pVM Pointer to the VM.
|
---|
1011 | * @param pSSM The SSM handle.
|
---|
1012 | * @param uVersion The version (1).
|
---|
1013 | * @param uPass The pass.
|
---|
1014 | */
|
---|
1015 | static DECLCALLBACK(int) ssmR3SelfLoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
|
---|
1016 | {
|
---|
1017 | AssertLogRelMsgReturn(uVersion == 1, ("%d", uVersion), VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION);
|
---|
1018 | NOREF(pVM); NOREF(uPass);
|
---|
1019 |
|
---|
1020 | /*
|
---|
1021 | * The first and last passes contains a {name, value} string table that is
|
---|
1022 | * terminated by two emptry strings. It contains useful informal build
|
---|
1023 | * info and can be very handy when something goes wrong after restore.
|
---|
1024 | */
|
---|
1025 | if ( uPass == 0
|
---|
1026 | || uPass == SSM_PASS_FINAL)
|
---|
1027 | {
|
---|
1028 | for (unsigned i = 0; ; i++)
|
---|
1029 | {
|
---|
1030 | char szVar[128];
|
---|
1031 | char szValue[1024];
|
---|
1032 | int rc = SSMR3GetStrZ(pSSM, szVar, sizeof(szVar));
|
---|
1033 | AssertRCReturn(rc, rc);
|
---|
1034 | rc = SSMR3GetStrZ(pSSM, szValue, sizeof(szValue));
|
---|
1035 | AssertRCReturn(rc, rc);
|
---|
1036 | if (!szVar[0] && !szValue[0])
|
---|
1037 | break;
|
---|
1038 | if (i == 0)
|
---|
1039 | LogRel(("SSM: Saved state info:\n"));
|
---|
1040 | LogRel(("SSM: %s: %s\n", szVar, szValue));
|
---|
1041 |
|
---|
1042 | /*
|
---|
1043 | * Detect 32-bit MSC for handling SSMFIELD_ENTRY_PAD_MSC32_AUTO.
|
---|
1044 | * Save the Host OS for SSMR3HandleHostOSAndArch
|
---|
1045 | */
|
---|
1046 | if (!strcmp(szVar, "Host OS"))
|
---|
1047 | {
|
---|
1048 | bool fIsHostMsc32 = !strcmp(szValue, "win.x86");
|
---|
1049 | if (fIsHostMsc32 != pSSM->u.Read.fIsHostMsc32)
|
---|
1050 | {
|
---|
1051 | LogRel(("SSM: (fIsHostMsc32 %RTbool => %RTbool)\n", pSSM->u.Read.fIsHostMsc32, fIsHostMsc32));
|
---|
1052 | pSSM->u.Read.fIsHostMsc32 = fIsHostMsc32;
|
---|
1053 | }
|
---|
1054 |
|
---|
1055 | size_t cchValue = strlen(szValue);
|
---|
1056 | size_t cchCopy = RT_MIN(cchValue, sizeof(pSSM->u.Read.szHostOSAndArch) - 1);
|
---|
1057 | Assert(cchValue == cchCopy);
|
---|
1058 | memcpy(pSSM->u.Read.szHostOSAndArch, szValue, cchCopy);
|
---|
1059 | pSSM->u.Read.szHostOSAndArch[cchCopy] = '\0';
|
---|
1060 | }
|
---|
1061 | }
|
---|
1062 | }
|
---|
1063 | return VINF_SUCCESS;
|
---|
1064 | }
|
---|
1065 |
|
---|
1066 |
|
---|
1067 | /**
|
---|
1068 | * Load exec callback for the special live save state unit that tracks the
|
---|
1069 | * progress of a live save.
|
---|
1070 | *
|
---|
1071 | * This is saved by ssmR3LiveControlEmit().
|
---|
1072 | *
|
---|
1073 | * @returns VBox status code.
|
---|
1074 | * @param pVM Pointer to the VM.
|
---|
1075 | * @param pSSM The SSM handle.
|
---|
1076 | * @param uVersion The version (1).
|
---|
1077 | * @param uPass The pass.
|
---|
1078 | */
|
---|
1079 | static DECLCALLBACK(int) ssmR3LiveControlLoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
|
---|
1080 | {
|
---|
1081 | AssertLogRelMsgReturn(uVersion == 1, ("%d", uVersion), VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION);
|
---|
1082 | NOREF(uPass);
|
---|
1083 |
|
---|
1084 | uint16_t uPartsPerTenThousand;
|
---|
1085 | int rc = SSMR3GetU16(pSSM, &uPartsPerTenThousand);
|
---|
1086 | if (RT_SUCCESS(rc))
|
---|
1087 | {
|
---|
1088 | /* Scale it down to fit in our exec range. */
|
---|
1089 | unsigned uPct = (unsigned)( (long double)uPartsPerTenThousand / 100
|
---|
1090 | * (100 - pSSM->uPercentPrepare - pSSM->uPercentDone) / 100)
|
---|
1091 | + pSSM->uPercentPrepare;
|
---|
1092 | if (uPct != pSSM->uPercent)
|
---|
1093 | {
|
---|
1094 | AssertMsg(uPct < 100, ("uPct=%d uPartsPerTenThousand=%d uPercentPrepare=%d uPercentDone=%d\n", uPct, uPartsPerTenThousand, pSSM->uPercentPrepare, pSSM->uPercentDone));
|
---|
1095 | pSSM->uPercent = uPct;
|
---|
1096 | if (pSSM->pfnProgress)
|
---|
1097 | pSSM->pfnProgress(pVM->pUVM, RT_MIN(uPct, 100 - pSSM->uPercentDone), pSSM->pvUser);
|
---|
1098 | }
|
---|
1099 | }
|
---|
1100 | return rc;
|
---|
1101 | }
|
---|
1102 |
|
---|
1103 |
|
---|
1104 | /**
|
---|
1105 | * Internal registration worker.
|
---|
1106 | *
|
---|
1107 | * @returns VBox status code.
|
---|
1108 | * @param pVM Pointer to the VM.
|
---|
1109 | * @param pszName Data unit name.
|
---|
1110 | * @param uInstance The instance id.
|
---|
1111 | * @param uVersion The data unit version.
|
---|
1112 | * @param cbGuess The guessed data unit size.
|
---|
1113 | * @param pszBefore Name of data unit to be placed in front of.
|
---|
1114 | * Optional.
|
---|
1115 | * @param ppUnit Where to store the inserted unit node.
|
---|
1116 | * Caller must fill in the missing details.
|
---|
1117 | */
|
---|
1118 | static int ssmR3Register(PVM pVM, const char *pszName, uint32_t uInstance,
|
---|
1119 | uint32_t uVersion, size_t cbGuess, const char *pszBefore, PSSMUNIT *ppUnit)
|
---|
1120 | {
|
---|
1121 | /*
|
---|
1122 | * Validate input.
|
---|
1123 | */
|
---|
1124 | AssertPtr(pszName);
|
---|
1125 | AssertReturn(*pszName, VERR_INVALID_PARAMETER);
|
---|
1126 | size_t cchName = strlen(pszName);
|
---|
1127 | AssertMsgReturn(cchName < SSM_MAX_NAME_SIZE, ("%zu >= %u: %s\n", cchName, SSM_MAX_NAME_SIZE, pszName), VERR_OUT_OF_RANGE);
|
---|
1128 |
|
---|
1129 | AssertReturn(!pszBefore || *pszBefore, VERR_INVALID_PARAMETER);
|
---|
1130 | size_t cchBefore = pszBefore ? strlen(pszBefore) : 0;
|
---|
1131 | AssertMsgReturn(cchBefore < SSM_MAX_NAME_SIZE, ("%zu >= %u: %s\n", cchBefore, SSM_MAX_NAME_SIZE, pszBefore), VERR_OUT_OF_RANGE);
|
---|
1132 |
|
---|
1133 | /*
|
---|
1134 | * Lazy init.
|
---|
1135 | */
|
---|
1136 | if (!pVM->ssm.s.fInitialized)
|
---|
1137 | {
|
---|
1138 | int rc = ssmR3LazyInit(pVM);
|
---|
1139 | AssertRCReturn(rc, rc);
|
---|
1140 | }
|
---|
1141 |
|
---|
1142 | /*
|
---|
1143 | * Walk to the end of the list checking for duplicates as we go.
|
---|
1144 | */
|
---|
1145 | PSSMUNIT pUnitBeforePrev = NULL;
|
---|
1146 | PSSMUNIT pUnitBefore = NULL;
|
---|
1147 | PSSMUNIT pUnitPrev = NULL;
|
---|
1148 | PSSMUNIT pUnit = pVM->ssm.s.pHead;
|
---|
1149 | while (pUnit)
|
---|
1150 | {
|
---|
1151 | if ( pUnit->u32Instance == uInstance
|
---|
1152 | && pUnit->cchName == cchName
|
---|
1153 | && !memcmp(pUnit->szName, pszName, cchName))
|
---|
1154 | {
|
---|
1155 | AssertMsgFailed(("Duplicate registration %s\n", pszName));
|
---|
1156 | return VERR_SSM_UNIT_EXISTS;
|
---|
1157 | }
|
---|
1158 | if ( pUnit->cchName == cchBefore
|
---|
1159 | && !pUnitBefore
|
---|
1160 | && !memcmp(pUnit->szName, pszBefore, cchBefore))
|
---|
1161 | {
|
---|
1162 | pUnitBeforePrev = pUnitPrev;
|
---|
1163 | pUnitBefore = pUnit;
|
---|
1164 | }
|
---|
1165 |
|
---|
1166 | /* next */
|
---|
1167 | pUnitPrev = pUnit;
|
---|
1168 | pUnit = pUnit->pNext;
|
---|
1169 | }
|
---|
1170 |
|
---|
1171 | /*
|
---|
1172 | * Allocate new node.
|
---|
1173 | */
|
---|
1174 | pUnit = (PSSMUNIT)MMR3HeapAllocZ(pVM, MM_TAG_SSM, RT_OFFSETOF(SSMUNIT, szName[cchName + 1]));
|
---|
1175 | if (!pUnit)
|
---|
1176 | return VERR_NO_MEMORY;
|
---|
1177 |
|
---|
1178 | /*
|
---|
1179 | * Fill in (some) data. (Stuff is zero'd.)
|
---|
1180 | */
|
---|
1181 | pUnit->u32Version = uVersion;
|
---|
1182 | pUnit->u32Instance = uInstance;
|
---|
1183 | pUnit->cbGuess = cbGuess;
|
---|
1184 | pUnit->cchName = cchName;
|
---|
1185 | memcpy(pUnit->szName, pszName, cchName);
|
---|
1186 |
|
---|
1187 | /*
|
---|
1188 | * Insert
|
---|
1189 | */
|
---|
1190 | if (pUnitBefore)
|
---|
1191 | {
|
---|
1192 | pUnit->pNext = pUnitBefore;
|
---|
1193 | if (pUnitBeforePrev)
|
---|
1194 | pUnitBeforePrev->pNext = pUnit;
|
---|
1195 | else
|
---|
1196 | pVM->ssm.s.pHead = pUnit;
|
---|
1197 | }
|
---|
1198 | else if (pUnitPrev)
|
---|
1199 | pUnitPrev->pNext = pUnit;
|
---|
1200 | else
|
---|
1201 | pVM->ssm.s.pHead = pUnit;
|
---|
1202 | pVM->ssm.s.cUnits++;
|
---|
1203 |
|
---|
1204 | *ppUnit = pUnit;
|
---|
1205 | return VINF_SUCCESS;
|
---|
1206 | }
|
---|
1207 |
|
---|
1208 |
|
---|
1209 | /**
|
---|
1210 | * Register a PDM Devices data unit.
|
---|
1211 | *
|
---|
1212 | * @returns VBox status.
|
---|
1213 | *
|
---|
1214 | * @param pVM Pointer to the VM.
|
---|
1215 | * @param pDevIns Device instance.
|
---|
1216 | * @param pszName Data unit name.
|
---|
1217 | * @param uInstance The instance identifier of the data unit.
|
---|
1218 | * This must together with the name be unique.
|
---|
1219 | * @param uVersion Data layout version number.
|
---|
1220 | * @param cbGuess The approximate amount of data in the unit.
|
---|
1221 | * Only for progress indicators.
|
---|
1222 | * @param pszBefore Name of data unit which we should be put in front
|
---|
1223 | * of. Optional (NULL).
|
---|
1224 | *
|
---|
1225 | * @param pfnLivePrep Prepare live save callback, optional.
|
---|
1226 | * @param pfnLiveExec Execute live save callback, optional.
|
---|
1227 | * @param pfnLiveVote Vote live save callback, optional.
|
---|
1228 | *
|
---|
1229 | * @param pfnSavePrep Prepare save callback, optional.
|
---|
1230 | * @param pfnSaveExec Execute save callback, optional.
|
---|
1231 | * @param pfnSaveDone Done save callback, optional.
|
---|
1232 | *
|
---|
1233 | * @param pfnLoadPrep Prepare load callback, optional.
|
---|
1234 | * @param pfnLoadExec Execute load callback, optional.
|
---|
1235 | * @param pfnLoadDone Done load callback, optional.
|
---|
1236 | */
|
---|
1237 | VMMR3_INT_DECL(int)
|
---|
1238 | SSMR3RegisterDevice(PVM pVM, PPDMDEVINS pDevIns, const char *pszName,
|
---|
1239 | uint32_t uInstance, uint32_t uVersion, size_t cbGuess, const char *pszBefore,
|
---|
1240 | PFNSSMDEVLIVEPREP pfnLivePrep, PFNSSMDEVLIVEEXEC pfnLiveExec, PFNSSMDEVLIVEVOTE pfnLiveVote,
|
---|
1241 | PFNSSMDEVSAVEPREP pfnSavePrep, PFNSSMDEVSAVEEXEC pfnSaveExec, PFNSSMDEVSAVEDONE pfnSaveDone,
|
---|
1242 | PFNSSMDEVLOADPREP pfnLoadPrep, PFNSSMDEVLOADEXEC pfnLoadExec, PFNSSMDEVLOADDONE pfnLoadDone)
|
---|
1243 | {
|
---|
1244 | PSSMUNIT pUnit;
|
---|
1245 | int rc = ssmR3Register(pVM, pszName, uInstance, uVersion, cbGuess, pszBefore, &pUnit);
|
---|
1246 | if (RT_SUCCESS(rc))
|
---|
1247 | {
|
---|
1248 | pUnit->enmType = SSMUNITTYPE_DEV;
|
---|
1249 | pUnit->u.Dev.pfnLivePrep = pfnLivePrep;
|
---|
1250 | pUnit->u.Dev.pfnLiveExec = pfnLiveExec;
|
---|
1251 | pUnit->u.Dev.pfnLiveVote = pfnLiveVote;
|
---|
1252 | pUnit->u.Dev.pfnSavePrep = pfnSavePrep;
|
---|
1253 | pUnit->u.Dev.pfnSaveExec = pfnSaveExec;
|
---|
1254 | pUnit->u.Dev.pfnSaveDone = pfnSaveDone;
|
---|
1255 | pUnit->u.Dev.pfnLoadPrep = pfnLoadPrep;
|
---|
1256 | pUnit->u.Dev.pfnLoadExec = pfnLoadExec;
|
---|
1257 | pUnit->u.Dev.pfnLoadDone = pfnLoadDone;
|
---|
1258 | pUnit->u.Dev.pDevIns = pDevIns;
|
---|
1259 | pUnit->pCritSect = PDMR3DevGetCritSect(pVM, pDevIns);
|
---|
1260 | }
|
---|
1261 | return rc;
|
---|
1262 | }
|
---|
1263 |
|
---|
1264 |
|
---|
1265 | /**
|
---|
1266 | * Register a PDM driver data unit.
|
---|
1267 | *
|
---|
1268 | * @returns VBox status.
|
---|
1269 | *
|
---|
1270 | * @param pVM Pointer to the VM.
|
---|
1271 | * @param pDrvIns Driver instance.
|
---|
1272 | * @param pszName Data unit name.
|
---|
1273 | * @param uInstance The instance identifier of the data unit.
|
---|
1274 | * This must together with the name be unique.
|
---|
1275 | * @param uVersion Data layout version number.
|
---|
1276 | * @param cbGuess The approximate amount of data in the unit.
|
---|
1277 | * Only for progress indicators.
|
---|
1278 | *
|
---|
1279 | * @param pfnLivePrep Prepare live save callback, optional.
|
---|
1280 | * @param pfnLiveExec Execute live save callback, optional.
|
---|
1281 | * @param pfnLiveVote Vote live save callback, optional.
|
---|
1282 | *
|
---|
1283 | * @param pfnSavePrep Prepare save callback, optional.
|
---|
1284 | * @param pfnSaveExec Execute save callback, optional.
|
---|
1285 | * @param pfnSaveDone Done save callback, optional.
|
---|
1286 | *
|
---|
1287 | * @param pfnLoadPrep Prepare load callback, optional.
|
---|
1288 | * @param pfnLoadExec Execute load callback, optional.
|
---|
1289 | * @param pfnLoadDone Done load callback, optional.
|
---|
1290 | */
|
---|
1291 | VMMR3_INT_DECL(int)
|
---|
1292 | SSMR3RegisterDriver(PVM pVM, PPDMDRVINS pDrvIns, const char *pszName, uint32_t uInstance, uint32_t uVersion, size_t cbGuess,
|
---|
1293 | PFNSSMDRVLIVEPREP pfnLivePrep, PFNSSMDRVLIVEEXEC pfnLiveExec, PFNSSMDRVLIVEVOTE pfnLiveVote,
|
---|
1294 | PFNSSMDRVSAVEPREP pfnSavePrep, PFNSSMDRVSAVEEXEC pfnSaveExec, PFNSSMDRVSAVEDONE pfnSaveDone,
|
---|
1295 | PFNSSMDRVLOADPREP pfnLoadPrep, PFNSSMDRVLOADEXEC pfnLoadExec, PFNSSMDRVLOADDONE pfnLoadDone)
|
---|
1296 | {
|
---|
1297 | PSSMUNIT pUnit;
|
---|
1298 | int rc = ssmR3Register(pVM, pszName, uInstance, uVersion, cbGuess, NULL, &pUnit);
|
---|
1299 | if (RT_SUCCESS(rc))
|
---|
1300 | {
|
---|
1301 | pUnit->enmType = SSMUNITTYPE_DRV;
|
---|
1302 | pUnit->u.Drv.pfnLivePrep = pfnLivePrep;
|
---|
1303 | pUnit->u.Drv.pfnLiveExec = pfnLiveExec;
|
---|
1304 | pUnit->u.Drv.pfnLiveVote = pfnLiveVote;
|
---|
1305 | pUnit->u.Drv.pfnSavePrep = pfnSavePrep;
|
---|
1306 | pUnit->u.Drv.pfnSaveExec = pfnSaveExec;
|
---|
1307 | pUnit->u.Drv.pfnSaveDone = pfnSaveDone;
|
---|
1308 | pUnit->u.Drv.pfnLoadPrep = pfnLoadPrep;
|
---|
1309 | pUnit->u.Drv.pfnLoadExec = pfnLoadExec;
|
---|
1310 | pUnit->u.Drv.pfnLoadDone = pfnLoadDone;
|
---|
1311 | pUnit->u.Drv.pDrvIns = pDrvIns;
|
---|
1312 | }
|
---|
1313 | return rc;
|
---|
1314 | }
|
---|
1315 |
|
---|
1316 |
|
---|
1317 | /**
|
---|
1318 | * Register a PDM USB device data unit.
|
---|
1319 | *
|
---|
1320 | * @returns VBox status.
|
---|
1321 | *
|
---|
1322 | * @param pVM Pointer to the VM.
|
---|
1323 | * @param pUsbIns USB instance.
|
---|
1324 | * @param pszName Data unit name.
|
---|
1325 | * @param uInstance The instance identifier of the data unit.
|
---|
1326 | * This must together with the name be unique.
|
---|
1327 | * @param uVersion Data layout version number.
|
---|
1328 | * @param cbGuess The approximate amount of data in the unit.
|
---|
1329 | * Only for progress indicators.
|
---|
1330 | *
|
---|
1331 | * @param pfnLivePrep Prepare live save callback, optional.
|
---|
1332 | * @param pfnLiveExec Execute live save callback, optional.
|
---|
1333 | * @param pfnLiveVote Vote live save callback, optional.
|
---|
1334 | *
|
---|
1335 | * @param pfnSavePrep Prepare save callback, optional.
|
---|
1336 | * @param pfnSaveExec Execute save callback, optional.
|
---|
1337 | * @param pfnSaveDone Done save callback, optional.
|
---|
1338 | *
|
---|
1339 | * @param pfnLoadPrep Prepare load callback, optional.
|
---|
1340 | * @param pfnLoadExec Execute load callback, optional.
|
---|
1341 | * @param pfnLoadDone Done load callback, optional.
|
---|
1342 | */
|
---|
1343 | VMMR3_INT_DECL(int)
|
---|
1344 | SSMR3RegisterUsb(PVM pVM, PPDMUSBINS pUsbIns, const char *pszName, uint32_t uInstance, uint32_t uVersion, size_t cbGuess,
|
---|
1345 | PFNSSMUSBLIVEPREP pfnLivePrep, PFNSSMUSBLIVEEXEC pfnLiveExec, PFNSSMUSBLIVEVOTE pfnLiveVote,
|
---|
1346 | PFNSSMUSBSAVEPREP pfnSavePrep, PFNSSMUSBSAVEEXEC pfnSaveExec, PFNSSMUSBSAVEDONE pfnSaveDone,
|
---|
1347 | PFNSSMUSBLOADPREP pfnLoadPrep, PFNSSMUSBLOADEXEC pfnLoadExec, PFNSSMUSBLOADDONE pfnLoadDone)
|
---|
1348 | {
|
---|
1349 | PSSMUNIT pUnit;
|
---|
1350 | int rc = ssmR3Register(pVM, pszName, uInstance, uVersion, cbGuess, NULL, &pUnit);
|
---|
1351 | if (RT_SUCCESS(rc))
|
---|
1352 | {
|
---|
1353 | pUnit->enmType = SSMUNITTYPE_USB;
|
---|
1354 | pUnit->u.Usb.pfnLivePrep = pfnLivePrep;
|
---|
1355 | pUnit->u.Usb.pfnLiveExec = pfnLiveExec;
|
---|
1356 | pUnit->u.Usb.pfnLiveVote = pfnLiveVote;
|
---|
1357 | pUnit->u.Usb.pfnSavePrep = pfnSavePrep;
|
---|
1358 | pUnit->u.Usb.pfnSaveExec = pfnSaveExec;
|
---|
1359 | pUnit->u.Usb.pfnSaveDone = pfnSaveDone;
|
---|
1360 | pUnit->u.Usb.pfnLoadPrep = pfnLoadPrep;
|
---|
1361 | pUnit->u.Usb.pfnLoadExec = pfnLoadExec;
|
---|
1362 | pUnit->u.Usb.pfnLoadDone = pfnLoadDone;
|
---|
1363 | pUnit->u.Usb.pUsbIns = pUsbIns;
|
---|
1364 | }
|
---|
1365 | return rc;
|
---|
1366 | }
|
---|
1367 |
|
---|
1368 |
|
---|
1369 | /**
|
---|
1370 | * Register a internal data unit.
|
---|
1371 | *
|
---|
1372 | * @returns VBox status.
|
---|
1373 | *
|
---|
1374 | * @param pVM Pointer to the VM.
|
---|
1375 | * @param pszName Data unit name.
|
---|
1376 | * @param uInstance The instance identifier of the data unit.
|
---|
1377 | * This must together with the name be unique.
|
---|
1378 | * @param uVersion Data layout version number.
|
---|
1379 | * @param cbGuess The approximate amount of data in the unit.
|
---|
1380 | * Only for progress indicators.
|
---|
1381 | *
|
---|
1382 | * @param pfnLivePrep Prepare live save callback, optional.
|
---|
1383 | * @param pfnLiveExec Execute live save callback, optional.
|
---|
1384 | * @param pfnLiveVote Vote live save callback, optional.
|
---|
1385 | *
|
---|
1386 | * @param pfnSavePrep Prepare save callback, optional.
|
---|
1387 | * @param pfnSaveExec Execute save callback, optional.
|
---|
1388 | * @param pfnSaveDone Done save callback, optional.
|
---|
1389 | *
|
---|
1390 | * @param pfnLoadPrep Prepare load callback, optional.
|
---|
1391 | * @param pfnLoadExec Execute load callback, optional.
|
---|
1392 | * @param pfnLoadDone Done load callback, optional.
|
---|
1393 | */
|
---|
1394 | VMMR3DECL(int) SSMR3RegisterInternal(PVM pVM, const char *pszName, uint32_t uInstance, uint32_t uVersion, size_t cbGuess,
|
---|
1395 | PFNSSMINTLIVEPREP pfnLivePrep, PFNSSMINTLIVEEXEC pfnLiveExec, PFNSSMINTLIVEVOTE pfnLiveVote,
|
---|
1396 | PFNSSMINTSAVEPREP pfnSavePrep, PFNSSMINTSAVEEXEC pfnSaveExec, PFNSSMINTSAVEDONE pfnSaveDone,
|
---|
1397 | PFNSSMINTLOADPREP pfnLoadPrep, PFNSSMINTLOADEXEC pfnLoadExec, PFNSSMINTLOADDONE pfnLoadDone)
|
---|
1398 | {
|
---|
1399 | PSSMUNIT pUnit;
|
---|
1400 | int rc = ssmR3Register(pVM, pszName, uInstance, uVersion, cbGuess, NULL, &pUnit);
|
---|
1401 | if (RT_SUCCESS(rc))
|
---|
1402 | {
|
---|
1403 | pUnit->enmType = SSMUNITTYPE_INTERNAL;
|
---|
1404 | pUnit->u.Internal.pfnLivePrep = pfnLivePrep;
|
---|
1405 | pUnit->u.Internal.pfnLiveExec = pfnLiveExec;
|
---|
1406 | pUnit->u.Internal.pfnLiveVote = pfnLiveVote;
|
---|
1407 | pUnit->u.Internal.pfnSavePrep = pfnSavePrep;
|
---|
1408 | pUnit->u.Internal.pfnSaveExec = pfnSaveExec;
|
---|
1409 | pUnit->u.Internal.pfnSaveDone = pfnSaveDone;
|
---|
1410 | pUnit->u.Internal.pfnLoadPrep = pfnLoadPrep;
|
---|
1411 | pUnit->u.Internal.pfnLoadExec = pfnLoadExec;
|
---|
1412 | pUnit->u.Internal.pfnLoadDone = pfnLoadDone;
|
---|
1413 | }
|
---|
1414 | return rc;
|
---|
1415 | }
|
---|
1416 |
|
---|
1417 |
|
---|
1418 | /**
|
---|
1419 | * Register an external data unit.
|
---|
1420 | *
|
---|
1421 | * @returns VBox status.
|
---|
1422 | *
|
---|
1423 | * @param pUVM The user mode VM handle.
|
---|
1424 | * @param pszName Data unit name.
|
---|
1425 | * @param uInstance The instance identifier of the data unit.
|
---|
1426 | * This must together with the name be unique.
|
---|
1427 | * @param uVersion Data layout version number.
|
---|
1428 | * @param cbGuess The approximate amount of data in the unit.
|
---|
1429 | * Only for progress indicators.
|
---|
1430 | *
|
---|
1431 | * @param pfnLivePrep Prepare live save callback, optional.
|
---|
1432 | * @param pfnLiveExec Execute live save callback, optional.
|
---|
1433 | * @param pfnLiveVote Vote live save callback, optional.
|
---|
1434 | *
|
---|
1435 | * @param pfnSavePrep Prepare save callback, optional.
|
---|
1436 | * @param pfnSaveExec Execute save callback, optional.
|
---|
1437 | * @param pfnSaveDone Done save callback, optional.
|
---|
1438 | *
|
---|
1439 | * @param pfnLoadPrep Prepare load callback, optional.
|
---|
1440 | * @param pfnLoadExec Execute load callback, optional.
|
---|
1441 | * @param pfnLoadDone Done load callback, optional.
|
---|
1442 | * @param pvUser User argument.
|
---|
1443 | */
|
---|
1444 | VMMR3DECL(int) SSMR3RegisterExternal(PUVM pUVM, const char *pszName, uint32_t uInstance, uint32_t uVersion, size_t cbGuess,
|
---|
1445 | PFNSSMEXTLIVEPREP pfnLivePrep, PFNSSMEXTLIVEEXEC pfnLiveExec, PFNSSMEXTLIVEVOTE pfnLiveVote,
|
---|
1446 | PFNSSMEXTSAVEPREP pfnSavePrep, PFNSSMEXTSAVEEXEC pfnSaveExec, PFNSSMEXTSAVEDONE pfnSaveDone,
|
---|
1447 | PFNSSMEXTLOADPREP pfnLoadPrep, PFNSSMEXTLOADEXEC pfnLoadExec, PFNSSMEXTLOADDONE pfnLoadDone, void *pvUser)
|
---|
1448 | {
|
---|
1449 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
1450 | PVM pVM = pUVM->pVM;
|
---|
1451 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
1452 |
|
---|
1453 | PSSMUNIT pUnit;
|
---|
1454 | int rc = ssmR3Register(pVM, pszName, uInstance, uVersion, cbGuess, NULL, &pUnit);
|
---|
1455 | if (RT_SUCCESS(rc))
|
---|
1456 | {
|
---|
1457 | pUnit->enmType = SSMUNITTYPE_EXTERNAL;
|
---|
1458 | pUnit->u.External.pfnLivePrep = pfnLivePrep;
|
---|
1459 | pUnit->u.External.pfnLiveExec = pfnLiveExec;
|
---|
1460 | pUnit->u.External.pfnLiveVote = pfnLiveVote;
|
---|
1461 | pUnit->u.External.pfnSavePrep = pfnSavePrep;
|
---|
1462 | pUnit->u.External.pfnSaveExec = pfnSaveExec;
|
---|
1463 | pUnit->u.External.pfnSaveDone = pfnSaveDone;
|
---|
1464 | pUnit->u.External.pfnLoadPrep = pfnLoadPrep;
|
---|
1465 | pUnit->u.External.pfnLoadExec = pfnLoadExec;
|
---|
1466 | pUnit->u.External.pfnLoadDone = pfnLoadDone;
|
---|
1467 | pUnit->u.External.pvUser = pvUser;
|
---|
1468 | }
|
---|
1469 | return rc;
|
---|
1470 | }
|
---|
1471 |
|
---|
1472 |
|
---|
1473 | /**
|
---|
1474 | * Deregister one or more PDM Device data units.
|
---|
1475 | *
|
---|
1476 | * @returns VBox status.
|
---|
1477 | *
|
---|
1478 | * @param pVM Pointer to the VM.
|
---|
1479 | * @param pDevIns Device instance.
|
---|
1480 | * @param pszName Data unit name.
|
---|
1481 | * Use NULL to deregister all data units for that device instance.
|
---|
1482 | * @param uInstance The instance identifier of the data unit.
|
---|
1483 | * This must together with the name be unique.
|
---|
1484 | * @remark Only for dynamic data units and dynamic unloaded modules.
|
---|
1485 | */
|
---|
1486 | VMMR3_INT_DECL(int) SSMR3DeregisterDevice(PVM pVM, PPDMDEVINS pDevIns, const char *pszName, uint32_t uInstance)
|
---|
1487 | {
|
---|
1488 | /*
|
---|
1489 | * Validate input.
|
---|
1490 | */
|
---|
1491 | if (!pDevIns)
|
---|
1492 | {
|
---|
1493 | AssertMsgFailed(("pDevIns is NULL!\n"));
|
---|
1494 | return VERR_INVALID_PARAMETER;
|
---|
1495 | }
|
---|
1496 |
|
---|
1497 | /*
|
---|
1498 | * Search the list.
|
---|
1499 | */
|
---|
1500 | size_t cchName = pszName ? strlen(pszName) : 0;
|
---|
1501 | int rc = pszName ? VERR_SSM_UNIT_NOT_FOUND : VINF_SUCCESS;
|
---|
1502 | PSSMUNIT pUnitPrev = NULL;
|
---|
1503 | PSSMUNIT pUnit = pVM->ssm.s.pHead;
|
---|
1504 | while (pUnit)
|
---|
1505 | {
|
---|
1506 | if ( pUnit->enmType == SSMUNITTYPE_DEV
|
---|
1507 | && ( !pszName
|
---|
1508 | || ( pUnit->cchName == cchName
|
---|
1509 | && !memcmp(pUnit->szName, pszName, cchName)))
|
---|
1510 | && pUnit->u32Instance == uInstance
|
---|
1511 | )
|
---|
1512 | {
|
---|
1513 | if (pUnit->u.Dev.pDevIns == pDevIns)
|
---|
1514 | {
|
---|
1515 | /*
|
---|
1516 | * Unlink it, advance pointer, and free the node.
|
---|
1517 | */
|
---|
1518 | PSSMUNIT pFree = pUnit;
|
---|
1519 | pUnit = pUnit->pNext;
|
---|
1520 | if (pUnitPrev)
|
---|
1521 | pUnitPrev->pNext = pUnit;
|
---|
1522 | else
|
---|
1523 | pVM->ssm.s.pHead = pUnit;
|
---|
1524 | pVM->ssm.s.cUnits--;
|
---|
1525 | Log(("SSM: Removed data unit '%s' (pdm dev).\n", pFree->szName));
|
---|
1526 | MMR3HeapFree(pFree);
|
---|
1527 |
|
---|
1528 | if (pszName)
|
---|
1529 | return VINF_SUCCESS;
|
---|
1530 | rc = VINF_SUCCESS;
|
---|
1531 | continue;
|
---|
1532 | }
|
---|
1533 | else if (pszName)
|
---|
1534 | {
|
---|
1535 | AssertMsgFailed(("Caller is not owner! Owner=%p Caller=%p %s\n",
|
---|
1536 | pUnit->u.Dev.pDevIns, pDevIns, pszName));
|
---|
1537 | return VERR_SSM_UNIT_NOT_OWNER;
|
---|
1538 | }
|
---|
1539 | }
|
---|
1540 |
|
---|
1541 | /* next */
|
---|
1542 | pUnitPrev = pUnit;
|
---|
1543 | pUnit = pUnit->pNext;
|
---|
1544 | }
|
---|
1545 |
|
---|
1546 | return rc;
|
---|
1547 | }
|
---|
1548 |
|
---|
1549 |
|
---|
1550 | /**
|
---|
1551 | * Deregister one ore more PDM Driver data units.
|
---|
1552 | *
|
---|
1553 | * @returns VBox status.
|
---|
1554 | * @param pVM Pointer to the VM.
|
---|
1555 | * @param pDrvIns Driver instance.
|
---|
1556 | * @param pszName Data unit name.
|
---|
1557 | * Use NULL to deregister all data units for that driver instance.
|
---|
1558 | * @param uInstance The instance identifier of the data unit.
|
---|
1559 | * This must together with the name be unique. Ignored if pszName is NULL.
|
---|
1560 | * @remark Only for dynamic data units and dynamic unloaded modules.
|
---|
1561 | */
|
---|
1562 | VMMR3_INT_DECL(int) SSMR3DeregisterDriver(PVM pVM, PPDMDRVINS pDrvIns, const char *pszName, uint32_t uInstance)
|
---|
1563 | {
|
---|
1564 | /*
|
---|
1565 | * Validate input.
|
---|
1566 | */
|
---|
1567 | if (!pDrvIns)
|
---|
1568 | {
|
---|
1569 | AssertMsgFailed(("pDrvIns is NULL!\n"));
|
---|
1570 | return VERR_INVALID_PARAMETER;
|
---|
1571 | }
|
---|
1572 |
|
---|
1573 | /*
|
---|
1574 | * Search the list.
|
---|
1575 | */
|
---|
1576 | size_t cchName = pszName ? strlen(pszName) : 0;
|
---|
1577 | int rc = pszName ? VERR_SSM_UNIT_NOT_FOUND : VINF_SUCCESS;
|
---|
1578 | PSSMUNIT pUnitPrev = NULL;
|
---|
1579 | PSSMUNIT pUnit = pVM->ssm.s.pHead;
|
---|
1580 | while (pUnit)
|
---|
1581 | {
|
---|
1582 | if ( pUnit->enmType == SSMUNITTYPE_DRV
|
---|
1583 | && ( !pszName
|
---|
1584 | || ( pUnit->cchName == cchName
|
---|
1585 | && !memcmp(pUnit->szName, pszName, cchName)
|
---|
1586 | && pUnit->u32Instance == uInstance))
|
---|
1587 | )
|
---|
1588 | {
|
---|
1589 | if (pUnit->u.Drv.pDrvIns == pDrvIns)
|
---|
1590 | {
|
---|
1591 | /*
|
---|
1592 | * Unlink it, advance pointer, and free the node.
|
---|
1593 | */
|
---|
1594 | PSSMUNIT pFree = pUnit;
|
---|
1595 | pUnit = pUnit->pNext;
|
---|
1596 | if (pUnitPrev)
|
---|
1597 | pUnitPrev->pNext = pUnit;
|
---|
1598 | else
|
---|
1599 | pVM->ssm.s.pHead = pUnit;
|
---|
1600 | pVM->ssm.s.cUnits--;
|
---|
1601 | Log(("SSM: Removed data unit '%s' (pdm drv).\n", pFree->szName));
|
---|
1602 | MMR3HeapFree(pFree);
|
---|
1603 |
|
---|
1604 | if (pszName)
|
---|
1605 | return VINF_SUCCESS;
|
---|
1606 | rc = VINF_SUCCESS;
|
---|
1607 | continue;
|
---|
1608 | }
|
---|
1609 |
|
---|
1610 | AssertMsgReturn(!pszName,
|
---|
1611 | ("Caller is not owner! Owner=%p Caller=%p %s\n", pUnit->u.Drv.pDrvIns, pDrvIns, pszName),
|
---|
1612 | VERR_SSM_UNIT_NOT_OWNER);
|
---|
1613 | }
|
---|
1614 |
|
---|
1615 | /* next */
|
---|
1616 | pUnitPrev = pUnit;
|
---|
1617 | pUnit = pUnit->pNext;
|
---|
1618 | }
|
---|
1619 |
|
---|
1620 | return rc;
|
---|
1621 | }
|
---|
1622 |
|
---|
1623 |
|
---|
1624 | /**
|
---|
1625 | * Deregister one or more PDM USB device data units.
|
---|
1626 | *
|
---|
1627 | * @returns VBox status.
|
---|
1628 | * @param pVM Pointer to the VM.
|
---|
1629 | * @param pUsbIns USB device instance.
|
---|
1630 | * @param pszName Data unit name.
|
---|
1631 | * Use NULL to deregister all data units for that driver instance.
|
---|
1632 | * @param uInstance The instance identifier of the data unit.
|
---|
1633 | * This must together with the name be unique. Ignored if pszName is NULL.
|
---|
1634 | * @remark Only for dynamic data units and dynamic unloaded modules.
|
---|
1635 | */
|
---|
1636 | VMMR3_INT_DECL(int) SSMR3DeregisterUsb(PVM pVM, PPDMUSBINS pUsbIns, const char *pszName, uint32_t uInstance)
|
---|
1637 | {
|
---|
1638 | /*
|
---|
1639 | * Validate input.
|
---|
1640 | */
|
---|
1641 | AssertMsgReturn(VALID_PTR(pUsbIns), ("pUsbIns is NULL!\n"), VERR_INVALID_PARAMETER);
|
---|
1642 |
|
---|
1643 | /*
|
---|
1644 | * Search the list.
|
---|
1645 | */
|
---|
1646 | size_t cchName = pszName ? strlen(pszName) : 0;
|
---|
1647 | int rc = pszName ? VERR_SSM_UNIT_NOT_FOUND : VINF_SUCCESS;
|
---|
1648 | PSSMUNIT pUnitPrev = NULL;
|
---|
1649 | PSSMUNIT pUnit = pVM->ssm.s.pHead;
|
---|
1650 | while (pUnit)
|
---|
1651 | {
|
---|
1652 | if ( pUnit->enmType == SSMUNITTYPE_USB
|
---|
1653 | && ( !pszName
|
---|
1654 | || ( pUnit->cchName == cchName
|
---|
1655 | && !memcmp(pUnit->szName, pszName, cchName)
|
---|
1656 | && pUnit->u32Instance == uInstance))
|
---|
1657 | )
|
---|
1658 | {
|
---|
1659 | if (pUnit->u.Usb.pUsbIns == pUsbIns)
|
---|
1660 | {
|
---|
1661 | /*
|
---|
1662 | * Unlink it, advance pointer, and free the node.
|
---|
1663 | */
|
---|
1664 | PSSMUNIT pFree = pUnit;
|
---|
1665 | pUnit = pUnit->pNext;
|
---|
1666 | if (pUnitPrev)
|
---|
1667 | pUnitPrev->pNext = pUnit;
|
---|
1668 | else
|
---|
1669 | pVM->ssm.s.pHead = pUnit;
|
---|
1670 | pVM->ssm.s.cUnits--;
|
---|
1671 | Log(("SSM: Removed data unit '%s' (pdm drv).\n", pFree->szName));
|
---|
1672 | MMR3HeapFree(pFree);
|
---|
1673 |
|
---|
1674 | if (pszName)
|
---|
1675 | return VINF_SUCCESS;
|
---|
1676 | rc = VINF_SUCCESS;
|
---|
1677 | continue;
|
---|
1678 | }
|
---|
1679 |
|
---|
1680 | AssertMsgReturn(!pszName,
|
---|
1681 | ("Caller is not owner! Owner=%p Caller=%p %s\n", pUnit->u.Usb.pUsbIns, pUsbIns, pszName),
|
---|
1682 | VERR_SSM_UNIT_NOT_OWNER);
|
---|
1683 | }
|
---|
1684 |
|
---|
1685 | /* next */
|
---|
1686 | pUnitPrev = pUnit;
|
---|
1687 | pUnit = pUnit->pNext;
|
---|
1688 | }
|
---|
1689 |
|
---|
1690 | return rc;
|
---|
1691 | }
|
---|
1692 |
|
---|
1693 |
|
---|
1694 | /**
|
---|
1695 | * Deregister a data unit.
|
---|
1696 | *
|
---|
1697 | * @returns VBox status.
|
---|
1698 | * @param pVM Pointer to the VM.
|
---|
1699 | * @param enmType Unit type
|
---|
1700 | * @param pszName Data unit name.
|
---|
1701 | * @remark Only for dynamic data units.
|
---|
1702 | */
|
---|
1703 | static int ssmR3DeregisterByNameAndType(PVM pVM, const char *pszName, SSMUNITTYPE enmType)
|
---|
1704 | {
|
---|
1705 | /*
|
---|
1706 | * Validate input.
|
---|
1707 | */
|
---|
1708 | if (!pszName)
|
---|
1709 | {
|
---|
1710 | AssertMsgFailed(("pszName is NULL!\n"));
|
---|
1711 | return VERR_INVALID_PARAMETER;
|
---|
1712 | }
|
---|
1713 |
|
---|
1714 | /*
|
---|
1715 | * Search the list.
|
---|
1716 | */
|
---|
1717 | size_t cchName = strlen(pszName);
|
---|
1718 | int rc = VERR_SSM_UNIT_NOT_FOUND;
|
---|
1719 | PSSMUNIT pUnitPrev = NULL;
|
---|
1720 | PSSMUNIT pUnit = pVM->ssm.s.pHead;
|
---|
1721 | while (pUnit)
|
---|
1722 | {
|
---|
1723 | if ( pUnit->enmType == enmType
|
---|
1724 | && pUnit->cchName == cchName
|
---|
1725 | && !memcmp(pUnit->szName, pszName, cchName))
|
---|
1726 | {
|
---|
1727 | /*
|
---|
1728 | * Unlink it, advance pointer, and free the node.
|
---|
1729 | */
|
---|
1730 | PSSMUNIT pFree = pUnit;
|
---|
1731 | pUnit = pUnit->pNext;
|
---|
1732 | if (pUnitPrev)
|
---|
1733 | pUnitPrev->pNext = pUnit;
|
---|
1734 | else
|
---|
1735 | pVM->ssm.s.pHead = pUnit;
|
---|
1736 | pVM->ssm.s.cUnits--;
|
---|
1737 | Log(("SSM: Removed data unit '%s' (type=%d).\n", pFree->szName, enmType));
|
---|
1738 | MMR3HeapFree(pFree);
|
---|
1739 | return VINF_SUCCESS;
|
---|
1740 | }
|
---|
1741 |
|
---|
1742 | /* next */
|
---|
1743 | pUnitPrev = pUnit;
|
---|
1744 | pUnit = pUnit->pNext;
|
---|
1745 | }
|
---|
1746 |
|
---|
1747 | return rc;
|
---|
1748 | }
|
---|
1749 |
|
---|
1750 |
|
---|
1751 | /**
|
---|
1752 | * Deregister an internal data unit.
|
---|
1753 | *
|
---|
1754 | * @returns VBox status.
|
---|
1755 | * @param pVM Pointer to the VM.
|
---|
1756 | * @param pszName Data unit name.
|
---|
1757 | * @remark Only for dynamic data units.
|
---|
1758 | */
|
---|
1759 | VMMR3DECL(int) SSMR3DeregisterInternal(PVM pVM, const char *pszName)
|
---|
1760 | {
|
---|
1761 | return ssmR3DeregisterByNameAndType(pVM, pszName, SSMUNITTYPE_INTERNAL);
|
---|
1762 | }
|
---|
1763 |
|
---|
1764 |
|
---|
1765 | /**
|
---|
1766 | * Deregister an external data unit.
|
---|
1767 | *
|
---|
1768 | * @returns VBox status.
|
---|
1769 | * @param pVM Pointer to the VM.
|
---|
1770 | * @param pszName Data unit name.
|
---|
1771 | * @remark Only for dynamic data units.
|
---|
1772 | */
|
---|
1773 | VMMR3DECL(int) SSMR3DeregisterExternal(PUVM pUVM, const char *pszName)
|
---|
1774 | {
|
---|
1775 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
1776 | PVM pVM = pUVM->pVM;
|
---|
1777 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
1778 |
|
---|
1779 | return ssmR3DeregisterByNameAndType(pVM, pszName, SSMUNITTYPE_EXTERNAL);
|
---|
1780 | }
|
---|
1781 |
|
---|
1782 | #endif /* !SSM_STANDALONE */
|
---|
1783 |
|
---|
1784 |
|
---|
1785 | /**
|
---|
1786 | * Initializes the stream after/before opening the file/whatever.
|
---|
1787 | *
|
---|
1788 | * @returns VINF_SUCCESS or VERR_NO_MEMORY.
|
---|
1789 | * @param pStrm The stream handle.
|
---|
1790 | * @param fChecksummed Whether the stream is to be checksummed while
|
---|
1791 | * written/read.
|
---|
1792 | * @param cBuffers The number of buffers.
|
---|
1793 | */
|
---|
1794 | static int ssmR3StrmInitInternal(PSSMSTRM pStrm, bool fChecksummed, uint32_t cBuffers)
|
---|
1795 | {
|
---|
1796 | Assert(cBuffers > 0);
|
---|
1797 |
|
---|
1798 | /*
|
---|
1799 | * Init the common data members.
|
---|
1800 | */
|
---|
1801 | pStrm->fTerminating = false;
|
---|
1802 | pStrm->fNeedSeek = false;
|
---|
1803 | pStrm->rc = VINF_SUCCESS;
|
---|
1804 | pStrm->hIoThread = NIL_RTTHREAD;
|
---|
1805 | pStrm->offNeedSeekTo= UINT64_MAX;
|
---|
1806 |
|
---|
1807 | pStrm->pHead = NULL;
|
---|
1808 | pStrm->pFree = NULL;
|
---|
1809 | pStrm->hEvtHead = NIL_RTSEMEVENT;
|
---|
1810 | pStrm->hEvtFree = NIL_RTSEMEVENT;
|
---|
1811 |
|
---|
1812 | pStrm->pPending = NULL;
|
---|
1813 | pStrm->pCur = NULL;
|
---|
1814 | pStrm->offCurStream = 0;
|
---|
1815 | pStrm->off = 0;
|
---|
1816 | pStrm->fChecksummed = fChecksummed;
|
---|
1817 | pStrm->u32StreamCRC = fChecksummed ? RTCrc32Start() : 0;
|
---|
1818 | pStrm->offStreamCRC = 0;
|
---|
1819 |
|
---|
1820 | /*
|
---|
1821 | * Allocate the buffers. Page align them in case that makes the kernel
|
---|
1822 | * and/or cpu happier in some way.
|
---|
1823 | */
|
---|
1824 | int rc = VINF_SUCCESS;
|
---|
1825 | for (uint32_t i = 0; i < cBuffers; i++)
|
---|
1826 | {
|
---|
1827 | PSSMSTRMBUF pBuf = (PSSMSTRMBUF)RTMemPageAllocZ(sizeof(*pBuf));
|
---|
1828 | if (!pBuf)
|
---|
1829 | {
|
---|
1830 | if (i > 2)
|
---|
1831 | {
|
---|
1832 | LogRel(("ssmR3StrmAllocBuffer: WARNING: Could only get %d stream buffers.\n", i));
|
---|
1833 | break;
|
---|
1834 | }
|
---|
1835 | LogRel(("ssmR3StrmAllocBuffer: Failed to allocate stream buffers. (i=%d)\n", i));
|
---|
1836 | return VERR_NO_MEMORY;
|
---|
1837 | }
|
---|
1838 |
|
---|
1839 | /* link it */
|
---|
1840 | pBuf->pNext = pStrm->pFree;
|
---|
1841 | pStrm->pFree = pBuf;
|
---|
1842 | }
|
---|
1843 |
|
---|
1844 | /*
|
---|
1845 | * Create the event semaphores.
|
---|
1846 | */
|
---|
1847 | rc = RTSemEventCreate(&pStrm->hEvtHead);
|
---|
1848 | if (RT_FAILURE(rc))
|
---|
1849 | return rc;
|
---|
1850 | rc = RTSemEventCreate(&pStrm->hEvtFree);
|
---|
1851 | if (RT_FAILURE(rc))
|
---|
1852 | return rc;
|
---|
1853 |
|
---|
1854 | return VINF_SUCCESS;
|
---|
1855 | }
|
---|
1856 |
|
---|
1857 |
|
---|
1858 | /**
|
---|
1859 | * Destroys a list of buffers.
|
---|
1860 | *
|
---|
1861 | * @param pHead Pointer to the head.
|
---|
1862 | */
|
---|
1863 | static void ssmR3StrmDestroyBufList(PSSMSTRMBUF pHead)
|
---|
1864 | {
|
---|
1865 | while (pHead)
|
---|
1866 | {
|
---|
1867 | PSSMSTRMBUF pCur = pHead;
|
---|
1868 | pHead = pCur->pNext;
|
---|
1869 | pCur->pNext = NULL;
|
---|
1870 | RTMemPageFree(pCur, sizeof(*pCur));
|
---|
1871 | }
|
---|
1872 | }
|
---|
1873 |
|
---|
1874 |
|
---|
1875 | /**
|
---|
1876 | * Cleans up a stream after ssmR3StrmInitInternal has been called (regardless of
|
---|
1877 | * it succeeded or not).
|
---|
1878 | *
|
---|
1879 | * @param pStrm The stream handle.
|
---|
1880 | */
|
---|
1881 | static void ssmR3StrmDelete(PSSMSTRM pStrm)
|
---|
1882 | {
|
---|
1883 | RTMemPageFree(pStrm->pCur, sizeof(*pStrm->pCur));
|
---|
1884 | pStrm->pCur = NULL;
|
---|
1885 | ssmR3StrmDestroyBufList(pStrm->pHead);
|
---|
1886 | pStrm->pHead = NULL;
|
---|
1887 | ssmR3StrmDestroyBufList(pStrm->pPending);
|
---|
1888 | pStrm->pPending = NULL;
|
---|
1889 | ssmR3StrmDestroyBufList(pStrm->pFree);
|
---|
1890 | pStrm->pFree = NULL;
|
---|
1891 |
|
---|
1892 | RTSemEventDestroy(pStrm->hEvtHead);
|
---|
1893 | pStrm->hEvtHead = NIL_RTSEMEVENT;
|
---|
1894 |
|
---|
1895 | RTSemEventDestroy(pStrm->hEvtFree);
|
---|
1896 | pStrm->hEvtFree = NIL_RTSEMEVENT;
|
---|
1897 | }
|
---|
1898 |
|
---|
1899 |
|
---|
1900 | /**
|
---|
1901 | * Initializes a stream that uses a method table.
|
---|
1902 | *
|
---|
1903 | * @returns VBox status code.
|
---|
1904 | * @param pStrm The stream manager structure.
|
---|
1905 | * @param pStreamOps The stream method table.
|
---|
1906 | * @param pvUser The user argument for the stream methods.
|
---|
1907 | * @param fWrite Whether to open for writing or reading.
|
---|
1908 | * @param fChecksummed Whether the stream is to be checksummed while
|
---|
1909 | * written/read.
|
---|
1910 | * @param cBuffers The number of buffers.
|
---|
1911 | */
|
---|
1912 | static int ssmR3StrmInit(PSSMSTRM pStrm, PCSSMSTRMOPS pStreamOps, void *pvUser, bool fWrite, bool fChecksummed, uint32_t cBuffers)
|
---|
1913 | {
|
---|
1914 | int rc = ssmR3StrmInitInternal(pStrm, fChecksummed, cBuffers);
|
---|
1915 | if (RT_SUCCESS(rc))
|
---|
1916 | {
|
---|
1917 | pStrm->pOps = pStreamOps;
|
---|
1918 | pStrm->pvUser = pvUser;
|
---|
1919 | pStrm->fWrite = fWrite;
|
---|
1920 | return VINF_SUCCESS;
|
---|
1921 | }
|
---|
1922 |
|
---|
1923 | ssmR3StrmDelete(pStrm);
|
---|
1924 | pStrm->rc = rc;
|
---|
1925 | return rc;
|
---|
1926 | }
|
---|
1927 |
|
---|
1928 |
|
---|
1929 | /**
|
---|
1930 | * @copydoc SSMSTRMOPS::pfnWrite
|
---|
1931 | */
|
---|
1932 | static DECLCALLBACK(int) ssmR3FileWrite(void *pvUser, uint64_t offStream, const void *pvBuf, size_t cbToWrite)
|
---|
1933 | {
|
---|
1934 | Assert(RTFileTell((RTFILE)(uintptr_t)pvUser) == offStream); NOREF(offStream);
|
---|
1935 | return RTFileWriteAt((RTFILE)(uintptr_t)pvUser, offStream, pvBuf, cbToWrite, NULL); /** @todo use RTFileWrite */
|
---|
1936 | }
|
---|
1937 |
|
---|
1938 |
|
---|
1939 | /**
|
---|
1940 | * @copydoc SSMSTRMOPS::pfnRead
|
---|
1941 | */
|
---|
1942 | static DECLCALLBACK(int) ssmR3FileRead(void *pvUser, uint64_t offStream, void *pvBuf, size_t cbToRead, size_t *pcbRead)
|
---|
1943 | {
|
---|
1944 | Assert(RTFileTell((RTFILE)(uintptr_t)pvUser) == offStream); NOREF(offStream);
|
---|
1945 | return RTFileRead((RTFILE)(uintptr_t)pvUser, pvBuf, cbToRead, pcbRead);
|
---|
1946 | }
|
---|
1947 |
|
---|
1948 |
|
---|
1949 | /**
|
---|
1950 | * @copydoc SSMSTRMOPS::pfnSeek
|
---|
1951 | */
|
---|
1952 | static DECLCALLBACK(int) ssmR3FileSeek(void *pvUser, int64_t offSeek, unsigned uMethod, uint64_t *poffActual)
|
---|
1953 | {
|
---|
1954 | return RTFileSeek((RTFILE)(uintptr_t)pvUser, offSeek, uMethod, poffActual);
|
---|
1955 | }
|
---|
1956 |
|
---|
1957 |
|
---|
1958 | /**
|
---|
1959 | * @copydoc SSMSTRMOPS::pfnTell
|
---|
1960 | */
|
---|
1961 | static DECLCALLBACK(uint64_t) ssmR3FileTell(void *pvUser)
|
---|
1962 | {
|
---|
1963 | return RTFileTell((RTFILE)(uintptr_t)pvUser);
|
---|
1964 | }
|
---|
1965 |
|
---|
1966 |
|
---|
1967 | /**
|
---|
1968 | * @copydoc SSMSTRMOPS::pfnSize
|
---|
1969 | */
|
---|
1970 | static DECLCALLBACK(int) ssmR3FileSize(void *pvUser, uint64_t *pcb)
|
---|
1971 | {
|
---|
1972 | return RTFileGetSize((RTFILE)(uintptr_t)pvUser, pcb);
|
---|
1973 | }
|
---|
1974 |
|
---|
1975 |
|
---|
1976 | /**
|
---|
1977 | * @copydoc SSMSTRMOPS::pfnIsOk
|
---|
1978 | */
|
---|
1979 | static DECLCALLBACK(int) ssmR3FileIsOk(void *pvUser)
|
---|
1980 | {
|
---|
1981 | /*
|
---|
1982 | * Check that there is still some space left on the disk.
|
---|
1983 | */
|
---|
1984 | RTFOFF cbFree;
|
---|
1985 | int rc = RTFileQueryFsSizes((RTFILE)(uintptr_t)pvUser, NULL, &cbFree, NULL, NULL);
|
---|
1986 | #define SSM_MIN_DISK_FREE ((RTFOFF)( 10 * _1M ))
|
---|
1987 | if (RT_SUCCESS(rc))
|
---|
1988 | {
|
---|
1989 | if (cbFree < SSM_MIN_DISK_FREE)
|
---|
1990 | {
|
---|
1991 | LogRel(("SSM: Giving up: Low on disk space. (cbFree=%RTfoff, SSM_MIN_DISK_FREE=%RTfoff).\n",
|
---|
1992 | cbFree, SSM_MIN_DISK_FREE));
|
---|
1993 | rc = VERR_SSM_LOW_ON_DISK_SPACE;
|
---|
1994 | }
|
---|
1995 | }
|
---|
1996 | else if (rc == VERR_NOT_SUPPORTED)
|
---|
1997 | rc = VINF_SUCCESS;
|
---|
1998 | else
|
---|
1999 | AssertLogRelRC(rc);
|
---|
2000 | return rc;
|
---|
2001 | }
|
---|
2002 |
|
---|
2003 |
|
---|
2004 | /**
|
---|
2005 | * @copydoc SSMSTRMOPS::pfnClose
|
---|
2006 | */
|
---|
2007 | static DECLCALLBACK(int) ssmR3FileClose(void *pvUser, bool fCancelled)
|
---|
2008 | {
|
---|
2009 | NOREF(fCancelled);
|
---|
2010 | return RTFileClose((RTFILE)(uintptr_t)pvUser);
|
---|
2011 | }
|
---|
2012 |
|
---|
2013 |
|
---|
2014 | /**
|
---|
2015 | * Method table for a file based stream.
|
---|
2016 | */
|
---|
2017 | static SSMSTRMOPS const g_ssmR3FileOps =
|
---|
2018 | {
|
---|
2019 | SSMSTRMOPS_VERSION,
|
---|
2020 | ssmR3FileWrite,
|
---|
2021 | ssmR3FileRead,
|
---|
2022 | ssmR3FileSeek,
|
---|
2023 | ssmR3FileTell,
|
---|
2024 | ssmR3FileSize,
|
---|
2025 | ssmR3FileIsOk,
|
---|
2026 | ssmR3FileClose,
|
---|
2027 | SSMSTRMOPS_VERSION
|
---|
2028 | };
|
---|
2029 |
|
---|
2030 |
|
---|
2031 | /**
|
---|
2032 | * Opens a file stream.
|
---|
2033 | *
|
---|
2034 | * @returns VBox status code.
|
---|
2035 | * @param pStrm The stream manager structure.
|
---|
2036 | * @param pszFilename The file to open or create.
|
---|
2037 | * @param fWrite Whether to open for writing or reading.
|
---|
2038 | * @param fChecksummed Whether the stream is to be checksummed while
|
---|
2039 | * written/read.
|
---|
2040 | * @param cBuffers The number of buffers.
|
---|
2041 | */
|
---|
2042 | static int ssmR3StrmOpenFile(PSSMSTRM pStrm, const char *pszFilename, bool fWrite, bool fChecksummed, uint32_t cBuffers)
|
---|
2043 | {
|
---|
2044 | int rc = ssmR3StrmInitInternal(pStrm, fChecksummed, cBuffers);
|
---|
2045 | if (RT_SUCCESS(rc))
|
---|
2046 | {
|
---|
2047 | uint32_t fFlags = fWrite
|
---|
2048 | ? RTFILE_O_READWRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_WRITE
|
---|
2049 | : RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_WRITE;
|
---|
2050 | RTFILE hFile;
|
---|
2051 | rc = RTFileOpen(&hFile, pszFilename, fFlags);
|
---|
2052 | if (RT_SUCCESS(rc))
|
---|
2053 | {
|
---|
2054 | pStrm->pOps = &g_ssmR3FileOps;
|
---|
2055 | pStrm->pvUser = (void *)(uintptr_t)hFile;
|
---|
2056 | pStrm->fWrite = fWrite;
|
---|
2057 | return VINF_SUCCESS;
|
---|
2058 | }
|
---|
2059 | }
|
---|
2060 |
|
---|
2061 | ssmR3StrmDelete(pStrm);
|
---|
2062 | pStrm->rc = rc;
|
---|
2063 | return rc;
|
---|
2064 | }
|
---|
2065 |
|
---|
2066 |
|
---|
2067 | /**
|
---|
2068 | * Raise an error condition on the stream.
|
---|
2069 | *
|
---|
2070 | * @returns true if we raised the error condition, false if the stream already
|
---|
2071 | * had an error condition set.
|
---|
2072 | *
|
---|
2073 | * @param pStrm The stream handle.
|
---|
2074 | * @param rc The VBox error status code.
|
---|
2075 | *
|
---|
2076 | * @thread Any.
|
---|
2077 | */
|
---|
2078 | DECLINLINE(bool) ssmR3StrmSetError(PSSMSTRM pStrm, int rc)
|
---|
2079 | {
|
---|
2080 | Assert(RT_FAILURE_NP(rc));
|
---|
2081 | return ASMAtomicCmpXchgS32(&pStrm->rc, rc, VINF_SUCCESS);
|
---|
2082 | }
|
---|
2083 |
|
---|
2084 |
|
---|
2085 | /**
|
---|
2086 | * Puts a buffer into the free list.
|
---|
2087 | *
|
---|
2088 | * @param pStrm The stream handle.
|
---|
2089 | * @param pBuf The buffer.
|
---|
2090 | *
|
---|
2091 | * @thread The consumer.
|
---|
2092 | */
|
---|
2093 | static void ssmR3StrmPutFreeBuf(PSSMSTRM pStrm, PSSMSTRMBUF pBuf)
|
---|
2094 | {
|
---|
2095 | for (;;)
|
---|
2096 | {
|
---|
2097 | PSSMSTRMBUF pCurFreeHead = ASMAtomicUoReadPtrT(&pStrm->pFree, PSSMSTRMBUF);
|
---|
2098 | ASMAtomicUoWritePtr(&pBuf->pNext, pCurFreeHead);
|
---|
2099 | if (ASMAtomicCmpXchgPtr(&pStrm->pFree, pBuf, pCurFreeHead))
|
---|
2100 | {
|
---|
2101 | int rc = RTSemEventSignal(pStrm->hEvtFree);
|
---|
2102 | AssertRC(rc);
|
---|
2103 | return;
|
---|
2104 | }
|
---|
2105 | }
|
---|
2106 | }
|
---|
2107 |
|
---|
2108 |
|
---|
2109 | /**
|
---|
2110 | * Gets a free buffer, waits for one if necessary.
|
---|
2111 | *
|
---|
2112 | * @returns Pointer to the buffer on success. NULL if we're terminating.
|
---|
2113 | * @param pStrm The stream handle.
|
---|
2114 | *
|
---|
2115 | * @thread The producer.
|
---|
2116 | */
|
---|
2117 | static PSSMSTRMBUF ssmR3StrmGetFreeBuf(PSSMSTRM pStrm)
|
---|
2118 | {
|
---|
2119 | for (;;)
|
---|
2120 | {
|
---|
2121 | PSSMSTRMBUF pMine = ASMAtomicUoReadPtrT(&pStrm->pFree, PSSMSTRMBUF);
|
---|
2122 | if (!pMine)
|
---|
2123 | {
|
---|
2124 | if (pStrm->fTerminating)
|
---|
2125 | return NULL;
|
---|
2126 | if (RT_FAILURE(pStrm->rc))
|
---|
2127 | return NULL;
|
---|
2128 | if ( pStrm->fWrite
|
---|
2129 | && pStrm->hIoThread == NIL_RTTHREAD)
|
---|
2130 | {
|
---|
2131 | int rc = ssmR3StrmWriteBuffers(pStrm);
|
---|
2132 | if (RT_FAILURE(rc))
|
---|
2133 | return NULL;
|
---|
2134 | }
|
---|
2135 | int rc = RTSemEventWaitNoResume(pStrm->hEvtFree, 30000);
|
---|
2136 | if ( rc == VERR_SEM_DESTROYED
|
---|
2137 | || pStrm->fTerminating)
|
---|
2138 | return NULL;
|
---|
2139 | continue;
|
---|
2140 | }
|
---|
2141 |
|
---|
2142 | if (ASMAtomicCmpXchgPtr(&pStrm->pFree, pMine->pNext, pMine))
|
---|
2143 | {
|
---|
2144 | pMine->offStream = UINT64_MAX;
|
---|
2145 | pMine->cb = 0;
|
---|
2146 | pMine->pNext = NULL;
|
---|
2147 | pMine->fEndOfStream = false;
|
---|
2148 | pMine->NanoTS = RTTimeNanoTS();
|
---|
2149 | return pMine;
|
---|
2150 | }
|
---|
2151 | }
|
---|
2152 | }
|
---|
2153 |
|
---|
2154 |
|
---|
2155 | /**
|
---|
2156 | * Puts a buffer onto the queue.
|
---|
2157 | *
|
---|
2158 | * @param pBuf The buffer.
|
---|
2159 | *
|
---|
2160 | * @thread The producer.
|
---|
2161 | */
|
---|
2162 | static void ssmR3StrmPutBuf(PSSMSTRM pStrm, PSSMSTRMBUF pBuf)
|
---|
2163 | {
|
---|
2164 | for (;;)
|
---|
2165 | {
|
---|
2166 | PSSMSTRMBUF pCurHead = ASMAtomicUoReadPtrT(&pStrm->pHead, PSSMSTRMBUF);
|
---|
2167 | ASMAtomicUoWritePtr(&pBuf->pNext, pCurHead);
|
---|
2168 | if (ASMAtomicCmpXchgPtr(&pStrm->pHead, pBuf, pCurHead))
|
---|
2169 | {
|
---|
2170 | int rc = RTSemEventSignal(pStrm->hEvtHead);
|
---|
2171 | AssertRC(rc);
|
---|
2172 | return;
|
---|
2173 | }
|
---|
2174 | }
|
---|
2175 | }
|
---|
2176 |
|
---|
2177 |
|
---|
2178 | /**
|
---|
2179 | * Reverses the list.
|
---|
2180 | *
|
---|
2181 | * @returns The head of the reversed list.
|
---|
2182 | * @param pHead The head of the list to reverse.
|
---|
2183 | */
|
---|
2184 | static PSSMSTRMBUF ssmR3StrmReverseList(PSSMSTRMBUF pHead)
|
---|
2185 | {
|
---|
2186 | PSSMSTRMBUF pRevHead = NULL;
|
---|
2187 | while (pHead)
|
---|
2188 | {
|
---|
2189 | PSSMSTRMBUF pCur = pHead;
|
---|
2190 | pHead = pCur->pNext;
|
---|
2191 | pCur->pNext = pRevHead;
|
---|
2192 | pRevHead = pCur;
|
---|
2193 | }
|
---|
2194 | return pRevHead;
|
---|
2195 | }
|
---|
2196 |
|
---|
2197 |
|
---|
2198 | /**
|
---|
2199 | * Gets one buffer from the queue, will wait for one to become ready if
|
---|
2200 | * necessary.
|
---|
2201 | *
|
---|
2202 | * @returns Pointer to the buffer on success. NULL if we're terminating.
|
---|
2203 | * @param pBuf The buffer.
|
---|
2204 | *
|
---|
2205 | * @thread The consumer.
|
---|
2206 | */
|
---|
2207 | static PSSMSTRMBUF ssmR3StrmGetBuf(PSSMSTRM pStrm)
|
---|
2208 | {
|
---|
2209 | for (;;)
|
---|
2210 | {
|
---|
2211 | PSSMSTRMBUF pMine = pStrm->pPending;
|
---|
2212 | if (pMine)
|
---|
2213 | {
|
---|
2214 | pStrm->pPending = pMine->pNext;
|
---|
2215 | pMine->pNext = NULL;
|
---|
2216 | return pMine;
|
---|
2217 | }
|
---|
2218 |
|
---|
2219 | pMine = ASMAtomicXchgPtrT(&pStrm->pHead, NULL, PSSMSTRMBUF);
|
---|
2220 | if (pMine)
|
---|
2221 | pStrm->pPending = ssmR3StrmReverseList(pMine);
|
---|
2222 | else
|
---|
2223 | {
|
---|
2224 | if (pStrm->fTerminating)
|
---|
2225 | return NULL;
|
---|
2226 | if (RT_FAILURE(pStrm->rc))
|
---|
2227 | return NULL;
|
---|
2228 | if ( !pStrm->fWrite
|
---|
2229 | && pStrm->hIoThread == NIL_RTTHREAD)
|
---|
2230 | {
|
---|
2231 | int rc = ssmR3StrmReadMore(pStrm);
|
---|
2232 | if (RT_FAILURE(rc))
|
---|
2233 | return NULL;
|
---|
2234 | continue;
|
---|
2235 | }
|
---|
2236 |
|
---|
2237 | int rc = RTSemEventWaitNoResume(pStrm->hEvtHead, 30000);
|
---|
2238 | if ( rc == VERR_SEM_DESTROYED
|
---|
2239 | || pStrm->fTerminating)
|
---|
2240 | return NULL;
|
---|
2241 | }
|
---|
2242 | }
|
---|
2243 | }
|
---|
2244 |
|
---|
2245 |
|
---|
2246 | /**
|
---|
2247 | * Flushes the current buffer (both write and read streams).
|
---|
2248 | *
|
---|
2249 | * @param pStrm The stream handle.
|
---|
2250 | */
|
---|
2251 | static void ssmR3StrmFlushCurBuf(PSSMSTRM pStrm)
|
---|
2252 | {
|
---|
2253 | if (pStrm->pCur)
|
---|
2254 | {
|
---|
2255 | PSSMSTRMBUF pBuf = pStrm->pCur;
|
---|
2256 | pStrm->pCur = NULL;
|
---|
2257 |
|
---|
2258 | if (pStrm->fWrite)
|
---|
2259 | {
|
---|
2260 | uint32_t cb = pStrm->off;
|
---|
2261 | pBuf->cb = cb;
|
---|
2262 | pBuf->offStream = pStrm->offCurStream;
|
---|
2263 | if ( pStrm->fChecksummed
|
---|
2264 | && pStrm->offStreamCRC < cb)
|
---|
2265 | pStrm->u32StreamCRC = RTCrc32Process(pStrm->u32StreamCRC,
|
---|
2266 | &pBuf->abData[pStrm->offStreamCRC],
|
---|
2267 | cb - pStrm->offStreamCRC);
|
---|
2268 | pStrm->offCurStream += cb;
|
---|
2269 | pStrm->off = 0;
|
---|
2270 | pStrm->offStreamCRC = 0;
|
---|
2271 |
|
---|
2272 | ssmR3StrmPutBuf(pStrm, pBuf);
|
---|
2273 | }
|
---|
2274 | else
|
---|
2275 | {
|
---|
2276 | uint32_t cb = pBuf->cb;
|
---|
2277 | if ( pStrm->fChecksummed
|
---|
2278 | && pStrm->offStreamCRC < cb)
|
---|
2279 | pStrm->u32StreamCRC = RTCrc32Process(pStrm->u32StreamCRC,
|
---|
2280 | &pBuf->abData[pStrm->offStreamCRC],
|
---|
2281 | cb - pStrm->offStreamCRC);
|
---|
2282 | pStrm->offCurStream += cb;
|
---|
2283 | pStrm->off = 0;
|
---|
2284 | pStrm->offStreamCRC = 0;
|
---|
2285 |
|
---|
2286 | ssmR3StrmPutFreeBuf(pStrm, pBuf);
|
---|
2287 | }
|
---|
2288 | }
|
---|
2289 | }
|
---|
2290 |
|
---|
2291 |
|
---|
2292 | /**
|
---|
2293 | * Flush buffered data.
|
---|
2294 | *
|
---|
2295 | * @returns VBox status code. Returns VINF_EOF if we encounter a buffer with the
|
---|
2296 | * fEndOfStream indicator set.
|
---|
2297 | * @param pStrm The stream handle.
|
---|
2298 | *
|
---|
2299 | * @thread The producer thread.
|
---|
2300 | */
|
---|
2301 | static int ssmR3StrmWriteBuffers(PSSMSTRM pStrm)
|
---|
2302 | {
|
---|
2303 | Assert(pStrm->fWrite);
|
---|
2304 |
|
---|
2305 | /*
|
---|
2306 | * Just return if the stream has a pending error condition.
|
---|
2307 | */
|
---|
2308 | int rc = pStrm->rc;
|
---|
2309 | if (RT_FAILURE(rc))
|
---|
2310 | return rc;
|
---|
2311 |
|
---|
2312 | /*
|
---|
2313 | * Grab the pending list and write it out.
|
---|
2314 | */
|
---|
2315 | PSSMSTRMBUF pHead = ASMAtomicXchgPtrT(&pStrm->pHead, NULL, PSSMSTRMBUF);
|
---|
2316 | if (!pHead)
|
---|
2317 | return VINF_SUCCESS;
|
---|
2318 | pHead = ssmR3StrmReverseList(pHead);
|
---|
2319 |
|
---|
2320 | while (pHead)
|
---|
2321 | {
|
---|
2322 | /* pop */
|
---|
2323 | PSSMSTRMBUF pCur = pHead;
|
---|
2324 | pHead = pCur->pNext;
|
---|
2325 |
|
---|
2326 | /* flush */
|
---|
2327 | rc = pStrm->pOps->pfnIsOk(pStrm->pvUser);
|
---|
2328 | if (RT_SUCCESS(rc))
|
---|
2329 | rc = pStrm->pOps->pfnWrite(pStrm->pvUser, pCur->offStream, &pCur->abData[0], pCur->cb);
|
---|
2330 | if ( RT_FAILURE(rc)
|
---|
2331 | && ssmR3StrmSetError(pStrm, rc))
|
---|
2332 | LogRel(("ssmR3StrmWriteBuffers: Write failed with rc=%Rrc at offStream=%#llx\n", rc, pCur->offStream));
|
---|
2333 |
|
---|
2334 | /* free */
|
---|
2335 | bool fEndOfStream = pCur->fEndOfStream;
|
---|
2336 | ssmR3StrmPutFreeBuf(pStrm, pCur);
|
---|
2337 | if (fEndOfStream)
|
---|
2338 | {
|
---|
2339 | Assert(!pHead);
|
---|
2340 | return VINF_EOF;
|
---|
2341 | }
|
---|
2342 | }
|
---|
2343 |
|
---|
2344 | return pStrm->rc;
|
---|
2345 | }
|
---|
2346 |
|
---|
2347 |
|
---|
2348 | /**
|
---|
2349 | * Closes the stream after first flushing any pending write.
|
---|
2350 | *
|
---|
2351 | * @returns VBox status code.
|
---|
2352 | * @param pStrm The stream handle.
|
---|
2353 | * @param fCancelled Indicates whether the operation was cancelled or
|
---|
2354 | * not.
|
---|
2355 | */
|
---|
2356 | static int ssmR3StrmClose(PSSMSTRM pStrm, bool fCancelled)
|
---|
2357 | {
|
---|
2358 | /*
|
---|
2359 | * Flush, terminate the I/O thread, and close the stream.
|
---|
2360 | */
|
---|
2361 | if (pStrm->fWrite)
|
---|
2362 | {
|
---|
2363 | ssmR3StrmFlushCurBuf(pStrm);
|
---|
2364 | if (pStrm->hIoThread == NIL_RTTHREAD)
|
---|
2365 | ssmR3StrmWriteBuffers(pStrm);
|
---|
2366 | }
|
---|
2367 |
|
---|
2368 | if (pStrm->hIoThread != NIL_RTTHREAD)
|
---|
2369 | ASMAtomicWriteBool(&pStrm->fTerminating, true);
|
---|
2370 |
|
---|
2371 | int rc;
|
---|
2372 | if (pStrm->fWrite)
|
---|
2373 | {
|
---|
2374 | if (pStrm->hIoThread != NIL_RTTHREAD)
|
---|
2375 | {
|
---|
2376 | int rc2 = RTSemEventSignal(pStrm->hEvtHead);
|
---|
2377 | AssertLogRelRC(rc2);
|
---|
2378 | int rc3 = RTThreadWait(pStrm->hIoThread, RT_INDEFINITE_WAIT, NULL);
|
---|
2379 | AssertLogRelRC(rc3);
|
---|
2380 | pStrm->hIoThread = NIL_RTTHREAD;
|
---|
2381 | }
|
---|
2382 |
|
---|
2383 | rc = pStrm->pOps->pfnClose(pStrm->pvUser, fCancelled);
|
---|
2384 | if (RT_FAILURE(rc))
|
---|
2385 | ssmR3StrmSetError(pStrm, rc);
|
---|
2386 | }
|
---|
2387 | else
|
---|
2388 | {
|
---|
2389 | rc = pStrm->pOps->pfnClose(pStrm->pvUser, fCancelled);
|
---|
2390 | if (RT_FAILURE(rc))
|
---|
2391 | ssmR3StrmSetError(pStrm, rc);
|
---|
2392 |
|
---|
2393 | if (pStrm->hIoThread != NIL_RTTHREAD)
|
---|
2394 | {
|
---|
2395 | int rc2 = RTSemEventSignal(pStrm->hEvtFree);
|
---|
2396 | AssertLogRelRC(rc2);
|
---|
2397 | int rc3 = RTThreadWait(pStrm->hIoThread, RT_INDEFINITE_WAIT, NULL);
|
---|
2398 | AssertLogRelRC(rc3);
|
---|
2399 | pStrm->hIoThread = NIL_RTTHREAD;
|
---|
2400 | }
|
---|
2401 | }
|
---|
2402 |
|
---|
2403 | pStrm->pOps = NULL;
|
---|
2404 | pStrm->pvUser = NULL;
|
---|
2405 |
|
---|
2406 | rc = pStrm->rc;
|
---|
2407 | ssmR3StrmDelete(pStrm);
|
---|
2408 |
|
---|
2409 | return rc;
|
---|
2410 | }
|
---|
2411 |
|
---|
2412 | #ifndef SSM_STANDALONE
|
---|
2413 |
|
---|
2414 | /**
|
---|
2415 | * Stream output routine.
|
---|
2416 | *
|
---|
2417 | * @returns VBox status code.
|
---|
2418 | * @param pStrm The stream handle.
|
---|
2419 | * @param pvBuf What to write.
|
---|
2420 | * @param cbToWrite How much to write.
|
---|
2421 | *
|
---|
2422 | * @thread The producer in a write stream (never the I/O thread).
|
---|
2423 | */
|
---|
2424 | static int ssmR3StrmWrite(PSSMSTRM pStrm, const void *pvBuf, size_t cbToWrite)
|
---|
2425 | {
|
---|
2426 | AssertReturn(cbToWrite > 0, VINF_SUCCESS);
|
---|
2427 | Assert(pStrm->fWrite);
|
---|
2428 |
|
---|
2429 | /*
|
---|
2430 | * Squeeze as much as possible into the current buffer.
|
---|
2431 | */
|
---|
2432 | PSSMSTRMBUF pBuf = pStrm->pCur;
|
---|
2433 | if (RT_LIKELY(pBuf))
|
---|
2434 | {
|
---|
2435 | uint32_t cbLeft = RT_SIZEOFMEMB(SSMSTRMBUF, abData) - pStrm->off;
|
---|
2436 | if (RT_LIKELY(cbLeft >= cbToWrite))
|
---|
2437 | {
|
---|
2438 | memcpy(&pBuf->abData[pStrm->off], pvBuf, cbToWrite);
|
---|
2439 | pStrm->off += (uint32_t)cbToWrite;
|
---|
2440 | return VINF_SUCCESS;
|
---|
2441 | }
|
---|
2442 |
|
---|
2443 | if (cbLeft > 0)
|
---|
2444 | {
|
---|
2445 | memcpy(&pBuf->abData[pStrm->off], pvBuf, cbLeft);
|
---|
2446 | pStrm->off += cbLeft;
|
---|
2447 | cbToWrite -= cbLeft;
|
---|
2448 | pvBuf = (uint8_t const *)pvBuf + cbLeft;
|
---|
2449 | }
|
---|
2450 | Assert(pStrm->off == RT_SIZEOFMEMB(SSMSTRMBUF, abData));
|
---|
2451 | }
|
---|
2452 |
|
---|
2453 | /*
|
---|
2454 | * Need one or more new buffers.
|
---|
2455 | */
|
---|
2456 | do
|
---|
2457 | {
|
---|
2458 | /*
|
---|
2459 | * Flush the current buffer and replace it with a new one.
|
---|
2460 | */
|
---|
2461 | ssmR3StrmFlushCurBuf(pStrm);
|
---|
2462 | pBuf = ssmR3StrmGetFreeBuf(pStrm);
|
---|
2463 | if (!pBuf)
|
---|
2464 | break;
|
---|
2465 | pStrm->pCur = pBuf;
|
---|
2466 | Assert(pStrm->off == 0);
|
---|
2467 |
|
---|
2468 | /*
|
---|
2469 | * Copy data to the buffer.
|
---|
2470 | */
|
---|
2471 | uint32_t cbCopy = RT_SIZEOFMEMB(SSMSTRMBUF, abData);
|
---|
2472 | if (cbCopy > cbToWrite)
|
---|
2473 | cbCopy = (uint32_t)cbToWrite;
|
---|
2474 | memcpy(&pBuf->abData[0], pvBuf, cbCopy);
|
---|
2475 | pStrm->off = cbCopy;
|
---|
2476 | cbToWrite -= cbCopy;
|
---|
2477 | pvBuf = (uint8_t const *)pvBuf + cbCopy;
|
---|
2478 | } while (cbToWrite > 0);
|
---|
2479 |
|
---|
2480 | return pStrm->rc;
|
---|
2481 | }
|
---|
2482 |
|
---|
2483 |
|
---|
2484 | /**
|
---|
2485 | * Reserves space in the current buffer so the caller can write directly to the
|
---|
2486 | * buffer instead of doing double buffering.
|
---|
2487 | *
|
---|
2488 | * @returns VBox status code
|
---|
2489 | * @param pStrm The stream handle.
|
---|
2490 | * @param cb The amount of buffer space to reserve.
|
---|
2491 | * @param ppb Where to return the pointer.
|
---|
2492 | */
|
---|
2493 | static int ssmR3StrmReserveWriteBufferSpace(PSSMSTRM pStrm, size_t cb, uint8_t **ppb)
|
---|
2494 | {
|
---|
2495 | Assert(pStrm->fWrite);
|
---|
2496 | Assert(RT_SIZEOFMEMB(SSMSTRMBUF, abData) / 4 >= cb);
|
---|
2497 |
|
---|
2498 | /*
|
---|
2499 | * Check if there is room in the current buffer, it not flush it.
|
---|
2500 | */
|
---|
2501 | PSSMSTRMBUF pBuf = pStrm->pCur;
|
---|
2502 | if (pBuf)
|
---|
2503 | {
|
---|
2504 | uint32_t cbLeft = RT_SIZEOFMEMB(SSMSTRMBUF, abData) - pStrm->off;
|
---|
2505 | if (cbLeft >= cb)
|
---|
2506 | {
|
---|
2507 | *ppb = &pBuf->abData[pStrm->off];
|
---|
2508 | return VINF_SUCCESS;
|
---|
2509 | }
|
---|
2510 |
|
---|
2511 | ssmR3StrmFlushCurBuf(pStrm);
|
---|
2512 | }
|
---|
2513 |
|
---|
2514 | /*
|
---|
2515 | * Get a fresh buffer and return a pointer into it.
|
---|
2516 | */
|
---|
2517 | pBuf = ssmR3StrmGetFreeBuf(pStrm);
|
---|
2518 | if (pBuf)
|
---|
2519 | {
|
---|
2520 | pStrm->pCur = pBuf;
|
---|
2521 | Assert(pStrm->off == 0);
|
---|
2522 | *ppb = &pBuf->abData[0];
|
---|
2523 | }
|
---|
2524 | else
|
---|
2525 | *ppb = NULL; /* make gcc happy. */
|
---|
2526 | return pStrm->rc;
|
---|
2527 | }
|
---|
2528 |
|
---|
2529 |
|
---|
2530 | /**
|
---|
2531 | * Commits buffer space reserved by ssmR3StrmReserveWriteBufferSpace.
|
---|
2532 | *
|
---|
2533 | * @returns VBox status code.
|
---|
2534 | * @param pStrm The stream handle.
|
---|
2535 | * @param cb The amount of buffer space to commit. This can be less
|
---|
2536 | * that what was reserved initially.
|
---|
2537 | */
|
---|
2538 | static int ssmR3StrmCommitWriteBufferSpace(PSSMSTRM pStrm, size_t cb)
|
---|
2539 | {
|
---|
2540 | Assert(pStrm->pCur);
|
---|
2541 | Assert(pStrm->off + cb <= RT_SIZEOFMEMB(SSMSTRMBUF, abData));
|
---|
2542 | pStrm->off += (uint32_t)cb;
|
---|
2543 | return VINF_SUCCESS;
|
---|
2544 | }
|
---|
2545 |
|
---|
2546 |
|
---|
2547 | /**
|
---|
2548 | * Marks the end of the stream.
|
---|
2549 | *
|
---|
2550 | * This will cause the I/O thread to quit waiting for more buffers.
|
---|
2551 | *
|
---|
2552 | * @returns VBox status code.
|
---|
2553 | * @param pStrm The stream handle.
|
---|
2554 | */
|
---|
2555 | static int ssmR3StrmSetEnd(PSSMSTRM pStrm)
|
---|
2556 | {
|
---|
2557 | Assert(pStrm->fWrite);
|
---|
2558 | PSSMSTRMBUF pBuf = pStrm->pCur;
|
---|
2559 | if (RT_UNLIKELY(!pStrm->pCur))
|
---|
2560 | {
|
---|
2561 | pBuf = ssmR3StrmGetFreeBuf(pStrm);
|
---|
2562 | if (!pBuf)
|
---|
2563 | return pStrm->rc;
|
---|
2564 | pStrm->pCur = pBuf;
|
---|
2565 | Assert(pStrm->off == 0);
|
---|
2566 | }
|
---|
2567 | pBuf->fEndOfStream = true;
|
---|
2568 | ssmR3StrmFlushCurBuf(pStrm);
|
---|
2569 | return VINF_SUCCESS;
|
---|
2570 | }
|
---|
2571 |
|
---|
2572 | #endif /* !SSM_STANDALONE */
|
---|
2573 |
|
---|
2574 | /**
|
---|
2575 | * Read more from the stream.
|
---|
2576 | *
|
---|
2577 | * @returns VBox status code. VERR_EOF gets translated into VINF_EOF.
|
---|
2578 | * @param pStrm The stream handle.
|
---|
2579 | *
|
---|
2580 | * @thread The I/O thread when we got one, otherwise the stream user.
|
---|
2581 | */
|
---|
2582 | static int ssmR3StrmReadMore(PSSMSTRM pStrm)
|
---|
2583 | {
|
---|
2584 | int rc;
|
---|
2585 | Log6(("ssmR3StrmReadMore:\n"));
|
---|
2586 |
|
---|
2587 | /*
|
---|
2588 | * Undo seek done by ssmR3StrmPeekAt.
|
---|
2589 | */
|
---|
2590 | if (pStrm->fNeedSeek)
|
---|
2591 | {
|
---|
2592 | rc = pStrm->pOps->pfnSeek(pStrm->pvUser, pStrm->offNeedSeekTo, RTFILE_SEEK_BEGIN, NULL);
|
---|
2593 | if (RT_FAILURE(rc))
|
---|
2594 | {
|
---|
2595 | if (ssmR3StrmSetError(pStrm, rc))
|
---|
2596 | LogRel(("ssmR3StrmReadMore: RTFileSeek(,%#llx,) failed with rc=%Rrc\n", pStrm->offNeedSeekTo, rc));
|
---|
2597 | return rc;
|
---|
2598 | }
|
---|
2599 | pStrm->fNeedSeek = false;
|
---|
2600 | pStrm->offNeedSeekTo = UINT64_MAX;
|
---|
2601 | }
|
---|
2602 |
|
---|
2603 | /*
|
---|
2604 | * Get a free buffer and try fill it up.
|
---|
2605 | */
|
---|
2606 | PSSMSTRMBUF pBuf = ssmR3StrmGetFreeBuf(pStrm);
|
---|
2607 | if (!pBuf)
|
---|
2608 | return pStrm->rc;
|
---|
2609 |
|
---|
2610 | pBuf->offStream = pStrm->pOps->pfnTell(pStrm->pvUser);
|
---|
2611 | size_t cbRead = sizeof(pBuf->abData);
|
---|
2612 | rc = pStrm->pOps->pfnRead(pStrm->pvUser, pBuf->offStream, &pBuf->abData[0], cbRead, &cbRead);
|
---|
2613 | if ( RT_SUCCESS(rc)
|
---|
2614 | && cbRead > 0)
|
---|
2615 | {
|
---|
2616 | pBuf->cb = (uint32_t)cbRead;
|
---|
2617 | pBuf->fEndOfStream = false;
|
---|
2618 | Log6(("ssmR3StrmReadMore: %#010llx %#x\n", pBuf->offStream, pBuf->cb));
|
---|
2619 | ssmR3StrmPutBuf(pStrm, pBuf);
|
---|
2620 | }
|
---|
2621 | else if ( ( RT_SUCCESS_NP(rc)
|
---|
2622 | && cbRead == 0)
|
---|
2623 | || rc == VERR_EOF)
|
---|
2624 | {
|
---|
2625 | pBuf->cb = 0;
|
---|
2626 | pBuf->fEndOfStream = true;
|
---|
2627 | Log6(("ssmR3StrmReadMore: %#010llx 0 EOF!\n", pBuf->offStream));
|
---|
2628 | ssmR3StrmPutBuf(pStrm, pBuf);
|
---|
2629 | rc = VINF_EOF;
|
---|
2630 | }
|
---|
2631 | else
|
---|
2632 | {
|
---|
2633 | Log6(("ssmR3StrmReadMore: %#010llx rc=%Rrc!\n", pBuf->offStream, rc));
|
---|
2634 | if (ssmR3StrmSetError(pStrm, rc))
|
---|
2635 | LogRel(("ssmR3StrmReadMore: RTFileRead(,,%#x,) -> %Rrc at offset %#llx\n",
|
---|
2636 | sizeof(pBuf->abData), rc, pBuf->offStream));
|
---|
2637 | ssmR3StrmPutFreeBuf(pStrm, pBuf);
|
---|
2638 | }
|
---|
2639 | return rc;
|
---|
2640 | }
|
---|
2641 |
|
---|
2642 |
|
---|
2643 | /**
|
---|
2644 | * Stream input routine.
|
---|
2645 | *
|
---|
2646 | * @returns VBox status code.
|
---|
2647 | * @param pStrm The stream handle.
|
---|
2648 | * @param pvBuf Where to put what we read.
|
---|
2649 | * @param cbToRead How much to read.
|
---|
2650 | */
|
---|
2651 | static int ssmR3StrmRead(PSSMSTRM pStrm, void *pvBuf, size_t cbToRead)
|
---|
2652 | {
|
---|
2653 | AssertReturn(cbToRead > 0, VINF_SUCCESS);
|
---|
2654 | Assert(!pStrm->fWrite);
|
---|
2655 |
|
---|
2656 | /*
|
---|
2657 | * Read from the current buffer if we got one.
|
---|
2658 | */
|
---|
2659 | PSSMSTRMBUF pBuf = pStrm->pCur;
|
---|
2660 | if (RT_LIKELY(pBuf))
|
---|
2661 | {
|
---|
2662 | Assert(pStrm->off <= pBuf->cb);
|
---|
2663 | uint32_t cbLeft = pBuf->cb - pStrm->off;
|
---|
2664 | if (cbLeft >= cbToRead)
|
---|
2665 | {
|
---|
2666 | memcpy(pvBuf, &pBuf->abData[pStrm->off], cbToRead);
|
---|
2667 | pStrm->off += (uint32_t)cbToRead;
|
---|
2668 | Assert(pStrm->off <= pBuf->cb);
|
---|
2669 | return VINF_SUCCESS;
|
---|
2670 | }
|
---|
2671 | if (cbLeft)
|
---|
2672 | {
|
---|
2673 | memcpy(pvBuf, &pBuf->abData[pStrm->off], cbLeft);
|
---|
2674 | pStrm->off += cbLeft;
|
---|
2675 | cbToRead -= cbLeft;
|
---|
2676 | pvBuf = (uint8_t *)pvBuf + cbLeft;
|
---|
2677 | }
|
---|
2678 | else if (pBuf->fEndOfStream)
|
---|
2679 | return VERR_EOF;
|
---|
2680 | Assert(pStrm->off == pBuf->cb);
|
---|
2681 | }
|
---|
2682 |
|
---|
2683 | /*
|
---|
2684 | * Get more buffers from the stream.
|
---|
2685 | */
|
---|
2686 | int rc = VINF_SUCCESS;
|
---|
2687 | do
|
---|
2688 | {
|
---|
2689 | /*
|
---|
2690 | * Check for EOF first - never flush the EOF buffer.
|
---|
2691 | */
|
---|
2692 | if ( pBuf
|
---|
2693 | && pBuf->fEndOfStream)
|
---|
2694 | return VERR_EOF;
|
---|
2695 |
|
---|
2696 | /*
|
---|
2697 | * Flush the current buffer and get the next one.
|
---|
2698 | */
|
---|
2699 | ssmR3StrmFlushCurBuf(pStrm);
|
---|
2700 | pBuf = ssmR3StrmGetBuf(pStrm);
|
---|
2701 | if (!pBuf)
|
---|
2702 | {
|
---|
2703 | rc = pStrm->rc;
|
---|
2704 | break;
|
---|
2705 | }
|
---|
2706 | pStrm->pCur = pBuf;
|
---|
2707 | Assert(pStrm->off == 0);
|
---|
2708 | Assert(pStrm->offCurStream == pBuf->offStream);
|
---|
2709 | if (!pBuf->cb)
|
---|
2710 | {
|
---|
2711 | Assert(pBuf->fEndOfStream);
|
---|
2712 | return VERR_EOF;
|
---|
2713 | }
|
---|
2714 |
|
---|
2715 | /*
|
---|
2716 | * Read data from the buffer.
|
---|
2717 | */
|
---|
2718 | uint32_t cbCopy = pBuf->cb;
|
---|
2719 | if (cbCopy > cbToRead)
|
---|
2720 | cbCopy = (uint32_t)cbToRead;
|
---|
2721 | memcpy(pvBuf, &pBuf->abData[0], cbCopy);
|
---|
2722 | pStrm->off = cbCopy;
|
---|
2723 | cbToRead -= cbCopy;
|
---|
2724 | pvBuf = (uint8_t *)pvBuf + cbCopy;
|
---|
2725 | Assert(!pStrm->pCur || pStrm->off <= pStrm->pCur->cb);
|
---|
2726 | } while (cbToRead > 0);
|
---|
2727 |
|
---|
2728 | return rc;
|
---|
2729 | }
|
---|
2730 |
|
---|
2731 |
|
---|
2732 | /**
|
---|
2733 | * Reads data from the stream but instead of copying it to some output buffer
|
---|
2734 | * the caller gets a pointer to into the current stream buffer.
|
---|
2735 | *
|
---|
2736 | * The returned pointer becomes invalid after the next stream operation!
|
---|
2737 | *
|
---|
2738 | * @returns Pointer to the read data residing in the stream buffer. NULL is
|
---|
2739 | * returned if the request amount of data isn't available in the
|
---|
2740 | * buffer. The caller must fall back on ssmR3StrmRead when this
|
---|
2741 | * happens.
|
---|
2742 | *
|
---|
2743 | * @param pStrm The stream handle.
|
---|
2744 | * @param cbToRead The number of bytes to tread.
|
---|
2745 | */
|
---|
2746 | static uint8_t const *ssmR3StrmReadDirect(PSSMSTRM pStrm, size_t cbToRead)
|
---|
2747 | {
|
---|
2748 | AssertReturn(cbToRead > 0, VINF_SUCCESS);
|
---|
2749 | Assert(!pStrm->fWrite);
|
---|
2750 |
|
---|
2751 | /*
|
---|
2752 | * Too lazy to fetch more data for the odd case that we're
|
---|
2753 | * exactly at the boundary between two buffers.
|
---|
2754 | */
|
---|
2755 | PSSMSTRMBUF pBuf = pStrm->pCur;
|
---|
2756 | if (RT_LIKELY(pBuf))
|
---|
2757 | {
|
---|
2758 | Assert(pStrm->off <= pBuf->cb);
|
---|
2759 | uint32_t cbLeft = pBuf->cb - pStrm->off;
|
---|
2760 | if (cbLeft >= cbToRead)
|
---|
2761 | {
|
---|
2762 | uint8_t const *pb = &pBuf->abData[pStrm->off];
|
---|
2763 | pStrm->off += (uint32_t)cbToRead;
|
---|
2764 | Assert(pStrm->off <= pBuf->cb);
|
---|
2765 | return pb;
|
---|
2766 | }
|
---|
2767 | }
|
---|
2768 | return NULL;
|
---|
2769 | }
|
---|
2770 |
|
---|
2771 |
|
---|
2772 | #ifndef SSM_STANDALONE
|
---|
2773 | /**
|
---|
2774 | * Check that the stream is OK and flush data that is getting old
|
---|
2775 | *
|
---|
2776 | * The checking is mainly for testing for cancellation and out of space
|
---|
2777 | * conditions.
|
---|
2778 | *
|
---|
2779 | * @returns VBox status code.
|
---|
2780 | * @param pStrm The stream handle.
|
---|
2781 | */
|
---|
2782 | static int ssmR3StrmCheckAndFlush(PSSMSTRM pStrm)
|
---|
2783 | {
|
---|
2784 | int rc = pStrm->pOps->pfnIsOk(pStrm->pvUser);
|
---|
2785 | if (RT_FAILURE(rc))
|
---|
2786 | return rc;
|
---|
2787 |
|
---|
2788 | if ( pStrm->fWrite
|
---|
2789 | && pStrm->hIoThread != NIL_RTTHREAD
|
---|
2790 | && !pStrm->pHead /* the worker is probably idle */
|
---|
2791 | && pStrm->pCur
|
---|
2792 | && RTTimeNanoTS() - pStrm->pCur->NanoTS > 500*1000*1000 /* 0.5s */
|
---|
2793 | )
|
---|
2794 | ssmR3StrmFlushCurBuf(pStrm);
|
---|
2795 | return VINF_SUCCESS;
|
---|
2796 | }
|
---|
2797 | #endif /* !SSM_STANDALONE */
|
---|
2798 |
|
---|
2799 | /**
|
---|
2800 | * Tell current stream position.
|
---|
2801 | *
|
---|
2802 | * @returns stream position.
|
---|
2803 | * @param pStrm The stream handle.
|
---|
2804 | */
|
---|
2805 | static uint64_t ssmR3StrmTell(PSSMSTRM pStrm)
|
---|
2806 | {
|
---|
2807 | return pStrm->offCurStream + pStrm->off;
|
---|
2808 | }
|
---|
2809 |
|
---|
2810 |
|
---|
2811 | /**
|
---|
2812 | * Gets the intermediate stream CRC up to the current position.
|
---|
2813 | *
|
---|
2814 | * @returns CRC.
|
---|
2815 | * @param pStrm The stream handle.
|
---|
2816 | */
|
---|
2817 | static uint32_t ssmR3StrmCurCRC(PSSMSTRM pStrm)
|
---|
2818 | {
|
---|
2819 | if (!pStrm->fChecksummed)
|
---|
2820 | return 0;
|
---|
2821 | if (pStrm->offStreamCRC < pStrm->off)
|
---|
2822 | {
|
---|
2823 | PSSMSTRMBUF pBuf = pStrm->pCur; Assert(pBuf);
|
---|
2824 | pStrm->u32StreamCRC = RTCrc32Process(pStrm->u32StreamCRC, &pBuf->abData[pStrm->offStreamCRC], pStrm->off - pStrm->offStreamCRC);
|
---|
2825 | pStrm->offStreamCRC = pStrm->off;
|
---|
2826 | }
|
---|
2827 | else
|
---|
2828 | Assert(pStrm->offStreamCRC == pStrm->off);
|
---|
2829 | return pStrm->u32StreamCRC;
|
---|
2830 | }
|
---|
2831 |
|
---|
2832 |
|
---|
2833 | /**
|
---|
2834 | * Gets the final stream CRC up to the current position.
|
---|
2835 | *
|
---|
2836 | * @returns CRC.
|
---|
2837 | * @param pStrm The stream handle.
|
---|
2838 | */
|
---|
2839 | static uint32_t ssmR3StrmFinalCRC(PSSMSTRM pStrm)
|
---|
2840 | {
|
---|
2841 | if (!pStrm->fChecksummed)
|
---|
2842 | return 0;
|
---|
2843 | return RTCrc32Finish(ssmR3StrmCurCRC(pStrm));
|
---|
2844 | }
|
---|
2845 |
|
---|
2846 |
|
---|
2847 | /**
|
---|
2848 | * Disables checksumming of the stream.
|
---|
2849 | *
|
---|
2850 | * @param pStrm The stream handle.
|
---|
2851 | */
|
---|
2852 | static void ssmR3StrmDisableChecksumming(PSSMSTRM pStrm)
|
---|
2853 | {
|
---|
2854 | pStrm->fChecksummed = false;
|
---|
2855 | }
|
---|
2856 |
|
---|
2857 |
|
---|
2858 | /**
|
---|
2859 | * Used by SSMR3Seek to position the stream at the new unit.
|
---|
2860 | *
|
---|
2861 | * @returns VBox status code.
|
---|
2862 | * @param pStrm The strem handle.
|
---|
2863 | * @param off The seek offset.
|
---|
2864 | * @param uMethod The seek method.
|
---|
2865 | * @param u32CurCRC The current CRC at the seek position.
|
---|
2866 | */
|
---|
2867 | static int ssmR3StrmSeek(PSSMSTRM pStrm, int64_t off, uint32_t uMethod, uint32_t u32CurCRC)
|
---|
2868 | {
|
---|
2869 | AssertReturn(!pStrm->fWrite, VERR_NOT_SUPPORTED);
|
---|
2870 | AssertReturn(pStrm->hIoThread == NIL_RTTHREAD, VERR_WRONG_ORDER);
|
---|
2871 |
|
---|
2872 | uint64_t offStream;
|
---|
2873 | int rc = pStrm->pOps->pfnSeek(pStrm->pvUser, off, uMethod, &offStream);
|
---|
2874 | if (RT_SUCCESS(rc))
|
---|
2875 | {
|
---|
2876 | pStrm->fNeedSeek = false;
|
---|
2877 | pStrm->offNeedSeekTo= UINT64_MAX;
|
---|
2878 | pStrm->offCurStream = offStream;
|
---|
2879 | pStrm->off = 0;
|
---|
2880 | pStrm->offStreamCRC = 0;
|
---|
2881 | if (pStrm->fChecksummed)
|
---|
2882 | pStrm->u32StreamCRC = u32CurCRC;
|
---|
2883 | if (pStrm->pCur)
|
---|
2884 | {
|
---|
2885 | ssmR3StrmPutFreeBuf(pStrm, pStrm->pCur);
|
---|
2886 | pStrm->pCur = NULL;
|
---|
2887 | }
|
---|
2888 | }
|
---|
2889 | return rc;
|
---|
2890 | }
|
---|
2891 |
|
---|
2892 |
|
---|
2893 | #ifndef SSM_STANDALONE
|
---|
2894 | /**
|
---|
2895 | * Skip some bytes in the stream.
|
---|
2896 | *
|
---|
2897 | * This is only used if someone didn't read all of their data in the V1 format,
|
---|
2898 | * so don't bother making this very efficient yet.
|
---|
2899 | *
|
---|
2900 | * @returns VBox status code.
|
---|
2901 | * @param pStrm The stream handle.
|
---|
2902 | * @param offDst The destination offset.
|
---|
2903 | */
|
---|
2904 | static int ssmR3StrmSkipTo(PSSMSTRM pStrm, uint64_t offDst)
|
---|
2905 | {
|
---|
2906 | /* dead simple - lazy bird! */
|
---|
2907 | for (;;)
|
---|
2908 | {
|
---|
2909 | uint64_t offCur = ssmR3StrmTell(pStrm);
|
---|
2910 | AssertReturn(offCur <= offDst, VERR_SSM_SKIP_BACKWARDS);
|
---|
2911 | if (offCur == offDst)
|
---|
2912 | return VINF_SUCCESS;
|
---|
2913 |
|
---|
2914 | uint8_t abBuf[4096];
|
---|
2915 | size_t cbToRead = RT_MIN(sizeof(abBuf), offDst - offCur);
|
---|
2916 | int rc = ssmR3StrmRead(pStrm, abBuf, cbToRead);
|
---|
2917 | if (RT_FAILURE(rc))
|
---|
2918 | return rc;
|
---|
2919 | }
|
---|
2920 | }
|
---|
2921 | #endif /* !SSM_STANDALONE */
|
---|
2922 |
|
---|
2923 |
|
---|
2924 | /**
|
---|
2925 | * Get the size of the file.
|
---|
2926 | *
|
---|
2927 | * This does not work for non-file streams!
|
---|
2928 | *
|
---|
2929 | * @returns The file size, or UINT64_MAX if not a file stream.
|
---|
2930 | * @param pStrm The stream handle.
|
---|
2931 | */
|
---|
2932 | static uint64_t ssmR3StrmGetSize(PSSMSTRM pStrm)
|
---|
2933 | {
|
---|
2934 | uint64_t cbFile;
|
---|
2935 | int rc = pStrm->pOps->pfnSize(pStrm->pvUser, &cbFile);
|
---|
2936 | AssertLogRelRCReturn(rc, UINT64_MAX);
|
---|
2937 | return cbFile;
|
---|
2938 | }
|
---|
2939 |
|
---|
2940 |
|
---|
2941 | /***
|
---|
2942 | * Tests if the stream is a file stream or not.
|
---|
2943 | *
|
---|
2944 | * @returns true / false.
|
---|
2945 | * @param pStrm The stream handle.
|
---|
2946 | */
|
---|
2947 | static bool ssmR3StrmIsFile(PSSMSTRM pStrm)
|
---|
2948 | {
|
---|
2949 | return pStrm->pOps == &g_ssmR3FileOps;
|
---|
2950 | }
|
---|
2951 |
|
---|
2952 |
|
---|
2953 | /**
|
---|
2954 | * Peeks at data in a file stream without buffering anything (or upsetting
|
---|
2955 | * the buffering for that matter).
|
---|
2956 | *
|
---|
2957 | * @returns VBox status code.
|
---|
2958 | * @param pStrm The stream handle
|
---|
2959 | * @param off The offset to start peeking at. Use a negative offset to
|
---|
2960 | * peek at something relative to the end of the file.
|
---|
2961 | * @param pvBuf Output buffer.
|
---|
2962 | * @param cbToRead How much to read.
|
---|
2963 | * @param poff Where to optionally store the position. Useful when
|
---|
2964 | * using a negative off.
|
---|
2965 | *
|
---|
2966 | * @remarks Failures occurring while peeking will not be raised on the stream.
|
---|
2967 | */
|
---|
2968 | static int ssmR3StrmPeekAt(PSSMSTRM pStrm, RTFOFF off, void *pvBuf, size_t cbToRead, uint64_t *poff)
|
---|
2969 | {
|
---|
2970 | AssertReturn(!pStrm->fWrite, VERR_NOT_SUPPORTED);
|
---|
2971 | AssertReturn(pStrm->hIoThread == NIL_RTTHREAD, VERR_WRONG_ORDER);
|
---|
2972 |
|
---|
2973 | if (!pStrm->fNeedSeek)
|
---|
2974 | {
|
---|
2975 | pStrm->fNeedSeek = true;
|
---|
2976 | pStrm->offNeedSeekTo = pStrm->offCurStream + (pStrm->pCur ? pStrm->pCur->cb : 0);
|
---|
2977 | }
|
---|
2978 | uint64_t offActual;
|
---|
2979 | int rc = pStrm->pOps->pfnSeek(pStrm->pvUser, off, off >= 0 ? RTFILE_SEEK_BEGIN : RTFILE_SEEK_END, &offActual);
|
---|
2980 | if (RT_SUCCESS(rc))
|
---|
2981 | {
|
---|
2982 | if (poff)
|
---|
2983 | *poff = offActual;
|
---|
2984 | rc = pStrm->pOps->pfnRead(pStrm->pvUser, offActual, pvBuf, cbToRead, NULL);
|
---|
2985 | }
|
---|
2986 |
|
---|
2987 | return rc;
|
---|
2988 | }
|
---|
2989 |
|
---|
2990 | #ifndef SSM_STANDALONE
|
---|
2991 |
|
---|
2992 | /**
|
---|
2993 | * The I/O thread.
|
---|
2994 | *
|
---|
2995 | * @returns VINF_SUCCESS (ignored).
|
---|
2996 | * @param hSelf The thread handle.
|
---|
2997 | * @param pvStrm The stream handle.
|
---|
2998 | */
|
---|
2999 | static DECLCALLBACK(int) ssmR3StrmIoThread(RTTHREAD hSelf, void *pvStrm)
|
---|
3000 | {
|
---|
3001 | PSSMSTRM pStrm = (PSSMSTRM)pvStrm;
|
---|
3002 | ASMAtomicWriteHandle(&pStrm->hIoThread, hSelf); /* paranoia */
|
---|
3003 |
|
---|
3004 | Log(("ssmR3StrmIoThread: starts working\n"));
|
---|
3005 | if (pStrm->fWrite)
|
---|
3006 | {
|
---|
3007 | /*
|
---|
3008 | * Write until error or terminated.
|
---|
3009 | */
|
---|
3010 | for (;;)
|
---|
3011 | {
|
---|
3012 | int rc = ssmR3StrmWriteBuffers(pStrm);
|
---|
3013 | if ( RT_FAILURE(rc)
|
---|
3014 | || rc == VINF_EOF)
|
---|
3015 | {
|
---|
3016 | Log(("ssmR3StrmIoThread: quitting writing with rc=%Rrc.\n", rc));
|
---|
3017 | break;
|
---|
3018 | }
|
---|
3019 | if (RT_FAILURE(pStrm->rc))
|
---|
3020 | {
|
---|
3021 | Log(("ssmR3StrmIoThread: quitting writing with stream rc=%Rrc\n", pStrm->rc));
|
---|
3022 | break;
|
---|
3023 | }
|
---|
3024 |
|
---|
3025 | if (ASMAtomicReadBool(&pStrm->fTerminating))
|
---|
3026 | {
|
---|
3027 | if (!ASMAtomicReadPtrT(&pStrm->pHead, PSSMSTRMBUF))
|
---|
3028 | {
|
---|
3029 | Log(("ssmR3StrmIoThread: quitting writing because of pending termination.\n"));
|
---|
3030 | break;
|
---|
3031 | }
|
---|
3032 | Log(("ssmR3StrmIoThread: postponing termination because of pending buffers.\n"));
|
---|
3033 | }
|
---|
3034 | else if (!ASMAtomicReadPtrT(&pStrm->pHead, PSSMSTRMBUF))
|
---|
3035 | {
|
---|
3036 | rc = RTSemEventWait(pStrm->hEvtHead, RT_INDEFINITE_WAIT);
|
---|
3037 | AssertLogRelRC(rc);
|
---|
3038 | }
|
---|
3039 | }
|
---|
3040 |
|
---|
3041 | if (!ASMAtomicReadBool(&pStrm->fTerminating))
|
---|
3042 | RTSemEventSignal(pStrm->hEvtFree);
|
---|
3043 | }
|
---|
3044 | else
|
---|
3045 | {
|
---|
3046 | /*
|
---|
3047 | * Read until end of file, error or termination.
|
---|
3048 | */
|
---|
3049 | for (;;)
|
---|
3050 | {
|
---|
3051 | if (ASMAtomicReadBool(&pStrm->fTerminating))
|
---|
3052 | {
|
---|
3053 | Log(("ssmR3StrmIoThread: quitting reading because of pending termination.\n"));
|
---|
3054 | break;
|
---|
3055 | }
|
---|
3056 |
|
---|
3057 | int rc = ssmR3StrmReadMore(pStrm);
|
---|
3058 | if ( RT_FAILURE(rc)
|
---|
3059 | || rc == VINF_EOF)
|
---|
3060 | {
|
---|
3061 | Log(("ssmR3StrmIoThread: quitting reading with rc=%Rrc\n", rc));
|
---|
3062 | break;
|
---|
3063 | }
|
---|
3064 | if (RT_FAILURE(pStrm->rc))
|
---|
3065 | {
|
---|
3066 | Log(("ssmR3StrmIoThread: quitting reading with stream rc=%Rrc\n", pStrm->rc));
|
---|
3067 | break;
|
---|
3068 | }
|
---|
3069 | }
|
---|
3070 |
|
---|
3071 | if (!ASMAtomicReadBool(&pStrm->fTerminating))
|
---|
3072 | RTSemEventSignal(pStrm->hEvtHead);
|
---|
3073 | }
|
---|
3074 |
|
---|
3075 | return VINF_SUCCESS;
|
---|
3076 | }
|
---|
3077 |
|
---|
3078 |
|
---|
3079 | /**
|
---|
3080 | * Starts the I/O thread for the specified stream.
|
---|
3081 | *
|
---|
3082 | * @param pStrm The stream handle.
|
---|
3083 | */
|
---|
3084 | static void ssmR3StrmStartIoThread(PSSMSTRM pStrm)
|
---|
3085 | {
|
---|
3086 | Assert(pStrm->hIoThread == NIL_RTTHREAD);
|
---|
3087 |
|
---|
3088 | RTTHREAD hThread;
|
---|
3089 | int rc = RTThreadCreate(&hThread, ssmR3StrmIoThread, pStrm, 0, RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "SSM-IO");
|
---|
3090 | AssertRCReturnVoid(rc);
|
---|
3091 | ASMAtomicWriteHandle(&pStrm->hIoThread, hThread); /* paranoia */
|
---|
3092 | }
|
---|
3093 |
|
---|
3094 | #endif /* !SSM_STANDALONE */
|
---|
3095 |
|
---|
3096 | /**
|
---|
3097 | * Works the progress calculation for non-live saves and restores.
|
---|
3098 | *
|
---|
3099 | * @param pSSM The SSM handle.
|
---|
3100 | * @param cbAdvance Number of bytes to advance (with in the current unit).
|
---|
3101 | */
|
---|
3102 | static void ssmR3ProgressByByte(PSSMHANDLE pSSM, uint64_t cbAdvance)
|
---|
3103 | {
|
---|
3104 | if (!pSSM->fLiveSave)
|
---|
3105 | {
|
---|
3106 | /* Can't advance it beyond the estimated end of the unit. */
|
---|
3107 | uint64_t cbLeft = pSSM->offEstUnitEnd - pSSM->offEst;
|
---|
3108 | if (cbAdvance > cbLeft)
|
---|
3109 | cbAdvance = cbLeft;
|
---|
3110 | pSSM->offEst += cbAdvance;
|
---|
3111 |
|
---|
3112 | /* uPercentPrepare% prepare, xx% exec, uPercentDone% done+crc. This is not
|
---|
3113 | quite right for live save, but the non-live stage there is very short. */
|
---|
3114 | while ( pSSM->offEst >= pSSM->offEstProgress
|
---|
3115 | && pSSM->uPercent <= 100 - pSSM->uPercentDone)
|
---|
3116 | {
|
---|
3117 | if (pSSM->pfnProgress)
|
---|
3118 | pSSM->pfnProgress(pSSM->pVM->pUVM, pSSM->uPercent, pSSM->pvUser);
|
---|
3119 | pSSM->uPercent++;
|
---|
3120 | pSSM->offEstProgress = (pSSM->uPercent - pSSM->uPercentPrepare - pSSM->uPercentLive) * pSSM->cbEstTotal
|
---|
3121 | / (100 - pSSM->uPercentDone - pSSM->uPercentPrepare - pSSM->uPercentLive);
|
---|
3122 | }
|
---|
3123 | }
|
---|
3124 | }
|
---|
3125 |
|
---|
3126 |
|
---|
3127 | #ifndef SSM_STANDALONE
|
---|
3128 | /**
|
---|
3129 | * Makes the SSM operation cancellable or not (via SSMR3Cancel).
|
---|
3130 | *
|
---|
3131 | * @param pVM Pointer to the VM.
|
---|
3132 | * @param pSSM The saved state handle. (SSMHANDLE::rc may be set.)
|
---|
3133 | * @param fCancellable The new state.
|
---|
3134 | */
|
---|
3135 | static void ssmR3SetCancellable(PVM pVM, PSSMHANDLE pSSM, bool fCancellable)
|
---|
3136 | {
|
---|
3137 | RTCritSectEnter(&pVM->ssm.s.CancelCritSect);
|
---|
3138 | if (fCancellable)
|
---|
3139 | {
|
---|
3140 | Assert(!pVM->ssm.s.pSSM);
|
---|
3141 | pVM->ssm.s.pSSM = pSSM;
|
---|
3142 | }
|
---|
3143 | else
|
---|
3144 | {
|
---|
3145 | if (pVM->ssm.s.pSSM == pSSM)
|
---|
3146 | pVM->ssm.s.pSSM = NULL;
|
---|
3147 |
|
---|
3148 | uint32_t fCancelled = ASMAtomicUoReadU32(&pSSM->fCancelled);
|
---|
3149 | if ( fCancelled == SSMHANDLE_CANCELLED
|
---|
3150 | && RT_SUCCESS(pSSM->rc))
|
---|
3151 | pSSM->rc = VERR_SSM_CANCELLED;
|
---|
3152 | }
|
---|
3153 |
|
---|
3154 | RTCritSectLeave(&pVM->ssm.s.CancelCritSect);
|
---|
3155 | }
|
---|
3156 | #endif /* !SSM_STANDALONE */
|
---|
3157 |
|
---|
3158 |
|
---|
3159 | /**
|
---|
3160 | * Gets the host bit count of the saved state.
|
---|
3161 | *
|
---|
3162 | * Works for on both save and load handles.
|
---|
3163 | *
|
---|
3164 | * @returns 32 or 64.
|
---|
3165 | * @param pSSM The saved state handle.
|
---|
3166 | */
|
---|
3167 | DECLINLINE(uint32_t) ssmR3GetHostBits(PSSMHANDLE pSSM)
|
---|
3168 | {
|
---|
3169 | if (pSSM->enmOp >= SSMSTATE_LOAD_PREP)
|
---|
3170 | {
|
---|
3171 | uint32_t cBits = pSSM->u.Read.cHostBits;
|
---|
3172 | if (cBits)
|
---|
3173 | return cBits;
|
---|
3174 | }
|
---|
3175 | return HC_ARCH_BITS;
|
---|
3176 | }
|
---|
3177 |
|
---|
3178 |
|
---|
3179 | /**
|
---|
3180 | * Saved state origins on a host using 32-bit MSC?
|
---|
3181 | *
|
---|
3182 | * Works for on both save and load handles.
|
---|
3183 | *
|
---|
3184 | * @returns true/false.
|
---|
3185 | * @param pSSM The saved state handle.
|
---|
3186 | */
|
---|
3187 | DECLINLINE(bool) ssmR3IsHostMsc32(PSSMHANDLE pSSM)
|
---|
3188 | {
|
---|
3189 | if (pSSM->enmOp >= SSMSTATE_LOAD_PREP)
|
---|
3190 | return pSSM->u.Read.fIsHostMsc32;
|
---|
3191 | return SSM_HOST_IS_MSC_32;
|
---|
3192 | }
|
---|
3193 |
|
---|
3194 | #ifndef SSM_STANDALONE
|
---|
3195 |
|
---|
3196 | /**
|
---|
3197 | * Finishes a data unit.
|
---|
3198 | * All buffers and compressor instances are flushed and destroyed.
|
---|
3199 | *
|
---|
3200 | * @returns VBox status.
|
---|
3201 | * @param pSSM The saved state handle.
|
---|
3202 | */
|
---|
3203 | static int ssmR3DataWriteFinish(PSSMHANDLE pSSM)
|
---|
3204 | {
|
---|
3205 | //Log2(("ssmR3DataWriteFinish: %#010llx start\n", ssmR3StrmTell(&pSSM->Strm)));
|
---|
3206 | int rc = ssmR3DataFlushBuffer(pSSM);
|
---|
3207 | if (RT_SUCCESS(rc))
|
---|
3208 | {
|
---|
3209 | pSSM->offUnit = UINT64_MAX;
|
---|
3210 | pSSM->offUnitUser = UINT64_MAX;
|
---|
3211 | return VINF_SUCCESS;
|
---|
3212 | }
|
---|
3213 |
|
---|
3214 | if (RT_SUCCESS(pSSM->rc))
|
---|
3215 | pSSM->rc = rc;
|
---|
3216 | Log2(("ssmR3DataWriteFinish: failure rc=%Rrc\n", rc));
|
---|
3217 | return rc;
|
---|
3218 | }
|
---|
3219 |
|
---|
3220 |
|
---|
3221 | /**
|
---|
3222 | * Begins writing the data of a data unit.
|
---|
3223 | *
|
---|
3224 | * Errors are signalled via pSSM->rc.
|
---|
3225 | *
|
---|
3226 | * @param pSSM The saved state handle.
|
---|
3227 | */
|
---|
3228 | static void ssmR3DataWriteBegin(PSSMHANDLE pSSM)
|
---|
3229 | {
|
---|
3230 | pSSM->offUnit = 0;
|
---|
3231 | pSSM->offUnitUser = 0;
|
---|
3232 | }
|
---|
3233 |
|
---|
3234 |
|
---|
3235 | /**
|
---|
3236 | * Writes a record to the current data item in the saved state file.
|
---|
3237 | *
|
---|
3238 | * @returns VBox status code. Sets pSSM->rc on failure.
|
---|
3239 | * @param pSSM The saved state handle.
|
---|
3240 | * @param pvBuf The bits to write.
|
---|
3241 | * @param cbBuf The number of bytes to write.
|
---|
3242 | */
|
---|
3243 | static int ssmR3DataWriteRaw(PSSMHANDLE pSSM, const void *pvBuf, size_t cbBuf)
|
---|
3244 | {
|
---|
3245 | Log2(("ssmR3DataWriteRaw: %08llx|%08llx: pvBuf=%p cbBuf=%#x %.*Rhxs%s\n",
|
---|
3246 | ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pvBuf, cbBuf, RT_MIN(cbBuf, SSM_LOG_BYTES), pvBuf, cbBuf > SSM_LOG_BYTES ? "..." : ""));
|
---|
3247 |
|
---|
3248 | /*
|
---|
3249 | * Check that everything is fine.
|
---|
3250 | */
|
---|
3251 | if (RT_FAILURE(pSSM->rc))
|
---|
3252 | return pSSM->rc;
|
---|
3253 |
|
---|
3254 | /*
|
---|
3255 | * Write the data item in 1MB chunks for progress indicator reasons.
|
---|
3256 | */
|
---|
3257 | while (cbBuf > 0)
|
---|
3258 | {
|
---|
3259 | size_t cbChunk = RT_MIN(cbBuf, _1M);
|
---|
3260 | int rc = ssmR3StrmWrite(&pSSM->Strm, pvBuf, cbChunk);
|
---|
3261 | if (RT_FAILURE(rc))
|
---|
3262 | return rc;
|
---|
3263 | pSSM->offUnit += cbChunk;
|
---|
3264 | cbBuf -= cbChunk;
|
---|
3265 | pvBuf = (char *)pvBuf + cbChunk;
|
---|
3266 | }
|
---|
3267 |
|
---|
3268 | return VINF_SUCCESS;
|
---|
3269 | }
|
---|
3270 |
|
---|
3271 |
|
---|
3272 | /**
|
---|
3273 | * Writes a record header for the specified amount of data.
|
---|
3274 | *
|
---|
3275 | * @returns VBox status code. Sets pSSM->rc on failure.
|
---|
3276 | * @param pSSM The saved state handle
|
---|
3277 | * @param cb The amount of data.
|
---|
3278 | * @param u8TypeAndFlags The record type and flags.
|
---|
3279 | */
|
---|
3280 | static int ssmR3DataWriteRecHdr(PSSMHANDLE pSSM, size_t cb, uint8_t u8TypeAndFlags)
|
---|
3281 | {
|
---|
3282 | size_t cbHdr;
|
---|
3283 | uint8_t abHdr[8];
|
---|
3284 | abHdr[0] = u8TypeAndFlags;
|
---|
3285 | if (cb < 0x80)
|
---|
3286 | {
|
---|
3287 | cbHdr = 2;
|
---|
3288 | abHdr[1] = (uint8_t)cb;
|
---|
3289 | }
|
---|
3290 | else if (cb < 0x00000800)
|
---|
3291 | {
|
---|
3292 | cbHdr = 3;
|
---|
3293 | abHdr[1] = (uint8_t)(0xc0 | (cb >> 6));
|
---|
3294 | abHdr[2] = (uint8_t)(0x80 | (cb & 0x3f));
|
---|
3295 | }
|
---|
3296 | else if (cb < 0x00010000)
|
---|
3297 | {
|
---|
3298 | cbHdr = 4;
|
---|
3299 | abHdr[1] = (uint8_t)(0xe0 | (cb >> 12));
|
---|
3300 | abHdr[2] = (uint8_t)(0x80 | ((cb >> 6) & 0x3f));
|
---|
3301 | abHdr[3] = (uint8_t)(0x80 | (cb & 0x3f));
|
---|
3302 | }
|
---|
3303 | else if (cb < 0x00200000)
|
---|
3304 | {
|
---|
3305 | cbHdr = 5;
|
---|
3306 | abHdr[1] = (uint8_t)(0xf0 | (cb >> 18));
|
---|
3307 | abHdr[2] = (uint8_t)(0x80 | ((cb >> 12) & 0x3f));
|
---|
3308 | abHdr[3] = (uint8_t)(0x80 | ((cb >> 6) & 0x3f));
|
---|
3309 | abHdr[4] = (uint8_t)(0x80 | (cb & 0x3f));
|
---|
3310 | }
|
---|
3311 | else if (cb < 0x04000000)
|
---|
3312 | {
|
---|
3313 | cbHdr = 6;
|
---|
3314 | abHdr[1] = (uint8_t)(0xf8 | (cb >> 24));
|
---|
3315 | abHdr[2] = (uint8_t)(0x80 | ((cb >> 18) & 0x3f));
|
---|
3316 | abHdr[3] = (uint8_t)(0x80 | ((cb >> 12) & 0x3f));
|
---|
3317 | abHdr[4] = (uint8_t)(0x80 | ((cb >> 6) & 0x3f));
|
---|
3318 | abHdr[5] = (uint8_t)(0x80 | (cb & 0x3f));
|
---|
3319 | }
|
---|
3320 | else if (cb <= 0x7fffffff)
|
---|
3321 | {
|
---|
3322 | cbHdr = 7;
|
---|
3323 | abHdr[1] = (uint8_t)(0xfc | (cb >> 30));
|
---|
3324 | abHdr[2] = (uint8_t)(0x80 | ((cb >> 24) & 0x3f));
|
---|
3325 | abHdr[3] = (uint8_t)(0x80 | ((cb >> 18) & 0x3f));
|
---|
3326 | abHdr[4] = (uint8_t)(0x80 | ((cb >> 12) & 0x3f));
|
---|
3327 | abHdr[5] = (uint8_t)(0x80 | ((cb >> 6) & 0x3f));
|
---|
3328 | abHdr[6] = (uint8_t)(0x80 | (cb & 0x3f));
|
---|
3329 | }
|
---|
3330 | else
|
---|
3331 | AssertLogRelMsgFailedReturn(("cb=%#x\n", cb), pSSM->rc = VERR_SSM_MEM_TOO_BIG);
|
---|
3332 |
|
---|
3333 | Log3(("ssmR3DataWriteRecHdr: %08llx|%08llx/%08x: Type=%02x fImportant=%RTbool cbHdr=%u\n",
|
---|
3334 | ssmR3StrmTell(&pSSM->Strm) + cbHdr, pSSM->offUnit + cbHdr, cb, u8TypeAndFlags & SSM_REC_TYPE_MASK, !!(u8TypeAndFlags & SSM_REC_FLAGS_IMPORTANT), cbHdr));
|
---|
3335 |
|
---|
3336 | return ssmR3DataWriteRaw(pSSM, &abHdr[0], cbHdr);
|
---|
3337 | }
|
---|
3338 |
|
---|
3339 |
|
---|
3340 | /**
|
---|
3341 | * Worker that flushes the buffered data.
|
---|
3342 | *
|
---|
3343 | * @returns VBox status code. Will set pSSM->rc on error.
|
---|
3344 | * @param pSSM The saved state handle.
|
---|
3345 | */
|
---|
3346 | static int ssmR3DataFlushBuffer(PSSMHANDLE pSSM)
|
---|
3347 | {
|
---|
3348 | /*
|
---|
3349 | * Check how much there current is in the buffer.
|
---|
3350 | */
|
---|
3351 | uint32_t cb = pSSM->u.Write.offDataBuffer;
|
---|
3352 | if (!cb)
|
---|
3353 | return pSSM->rc;
|
---|
3354 | pSSM->u.Write.offDataBuffer = 0;
|
---|
3355 |
|
---|
3356 | /*
|
---|
3357 | * Write a record header and then the data.
|
---|
3358 | * (No need for fancy optimizations here any longer since the stream is
|
---|
3359 | * fully buffered.)
|
---|
3360 | */
|
---|
3361 | int rc = ssmR3DataWriteRecHdr(pSSM, cb, SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_RAW);
|
---|
3362 | if (RT_SUCCESS(rc))
|
---|
3363 | rc = ssmR3DataWriteRaw(pSSM, pSSM->u.Write.abDataBuffer, cb);
|
---|
3364 | ssmR3ProgressByByte(pSSM, cb);
|
---|
3365 | return rc;
|
---|
3366 | }
|
---|
3367 |
|
---|
3368 |
|
---|
3369 | /**
|
---|
3370 | * ssmR3DataWrite worker that writes big stuff.
|
---|
3371 | *
|
---|
3372 | * @returns VBox status code
|
---|
3373 | * @param pSSM The saved state handle.
|
---|
3374 | * @param pvBuf The bits to write.
|
---|
3375 | * @param cbBuf The number of bytes to write.
|
---|
3376 | */
|
---|
3377 | static int ssmR3DataWriteBig(PSSMHANDLE pSSM, const void *pvBuf, size_t cbBuf)
|
---|
3378 | {
|
---|
3379 | int rc = ssmR3DataFlushBuffer(pSSM);
|
---|
3380 | if (RT_SUCCESS(rc))
|
---|
3381 | {
|
---|
3382 | pSSM->offUnitUser += cbBuf;
|
---|
3383 |
|
---|
3384 | /*
|
---|
3385 | * Split it up into compression blocks.
|
---|
3386 | */
|
---|
3387 | for (;;)
|
---|
3388 | {
|
---|
3389 | AssertCompile(SSM_ZIP_BLOCK_SIZE == PAGE_SIZE);
|
---|
3390 | if ( cbBuf >= SSM_ZIP_BLOCK_SIZE
|
---|
3391 | && ( ((uintptr_t)pvBuf & 0xf)
|
---|
3392 | || !ASMMemIsZeroPage(pvBuf))
|
---|
3393 | )
|
---|
3394 | {
|
---|
3395 | /*
|
---|
3396 | * Compress it.
|
---|
3397 | */
|
---|
3398 | AssertCompile(1 + 3 + 1 + SSM_ZIP_BLOCK_SIZE < 0x00010000);
|
---|
3399 | uint8_t *pb;
|
---|
3400 | rc = ssmR3StrmReserveWriteBufferSpace(&pSSM->Strm, 1 + 3 + 1 + SSM_ZIP_BLOCK_SIZE, &pb);
|
---|
3401 | if (RT_FAILURE(rc))
|
---|
3402 | break;
|
---|
3403 | size_t cbRec = SSM_ZIP_BLOCK_SIZE - (SSM_ZIP_BLOCK_SIZE / 16);
|
---|
3404 | rc = RTZipBlockCompress(RTZIPTYPE_LZF, RTZIPLEVEL_FAST, 0 /*fFlags*/,
|
---|
3405 | pvBuf, SSM_ZIP_BLOCK_SIZE,
|
---|
3406 | pb + 1 + 3 + 1, cbRec, &cbRec);
|
---|
3407 | if (RT_SUCCESS(rc))
|
---|
3408 | {
|
---|
3409 | pb[0] = SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_RAW_LZF;
|
---|
3410 | pb[4] = SSM_ZIP_BLOCK_SIZE / _1K;
|
---|
3411 | cbRec += 1;
|
---|
3412 | }
|
---|
3413 | else
|
---|
3414 | {
|
---|
3415 | pb[0] = SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_RAW;
|
---|
3416 | memcpy(&pb[4], pvBuf, SSM_ZIP_BLOCK_SIZE);
|
---|
3417 | cbRec = SSM_ZIP_BLOCK_SIZE;
|
---|
3418 | }
|
---|
3419 | pb[1] = (uint8_t)(0xe0 | ( cbRec >> 12));
|
---|
3420 | pb[2] = (uint8_t)(0x80 | ((cbRec >> 6) & 0x3f));
|
---|
3421 | pb[3] = (uint8_t)(0x80 | ( cbRec & 0x3f));
|
---|
3422 | cbRec += 1 + 3;
|
---|
3423 | rc = ssmR3StrmCommitWriteBufferSpace(&pSSM->Strm, cbRec);
|
---|
3424 | if (RT_FAILURE(rc))
|
---|
3425 | break;
|
---|
3426 |
|
---|
3427 | pSSM->offUnit += cbRec;
|
---|
3428 | ssmR3ProgressByByte(pSSM, SSM_ZIP_BLOCK_SIZE);
|
---|
3429 |
|
---|
3430 | /* advance */
|
---|
3431 | if (cbBuf == SSM_ZIP_BLOCK_SIZE)
|
---|
3432 | return VINF_SUCCESS;
|
---|
3433 | cbBuf -= SSM_ZIP_BLOCK_SIZE;
|
---|
3434 | pvBuf = (uint8_t const*)pvBuf + SSM_ZIP_BLOCK_SIZE;
|
---|
3435 | }
|
---|
3436 | else if (cbBuf >= SSM_ZIP_BLOCK_SIZE)
|
---|
3437 | {
|
---|
3438 | /*
|
---|
3439 | * Zero block.
|
---|
3440 | */
|
---|
3441 | uint8_t abRec[3];
|
---|
3442 | abRec[0] = SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_RAW_ZERO;
|
---|
3443 | abRec[1] = 1;
|
---|
3444 | abRec[2] = SSM_ZIP_BLOCK_SIZE / _1K;
|
---|
3445 | Log3(("ssmR3DataWriteBig: %08llx|%08llx/%08x: ZERO\n", ssmR3StrmTell(&pSSM->Strm) + 2, pSSM->offUnit + 2, 1));
|
---|
3446 | rc = ssmR3DataWriteRaw(pSSM, &abRec[0], sizeof(abRec));
|
---|
3447 | if (RT_FAILURE(rc))
|
---|
3448 | break;
|
---|
3449 |
|
---|
3450 | /* advance */
|
---|
3451 | ssmR3ProgressByByte(pSSM, SSM_ZIP_BLOCK_SIZE);
|
---|
3452 | if (cbBuf == SSM_ZIP_BLOCK_SIZE)
|
---|
3453 | return VINF_SUCCESS;
|
---|
3454 | cbBuf -= SSM_ZIP_BLOCK_SIZE;
|
---|
3455 | pvBuf = (uint8_t const*)pvBuf + SSM_ZIP_BLOCK_SIZE;
|
---|
3456 | }
|
---|
3457 | else
|
---|
3458 | {
|
---|
3459 | /*
|
---|
3460 | * Less than one block left, store it the simple way.
|
---|
3461 | */
|
---|
3462 | rc = ssmR3DataWriteRecHdr(pSSM, cbBuf, SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_RAW);
|
---|
3463 | if (RT_SUCCESS(rc))
|
---|
3464 | rc = ssmR3DataWriteRaw(pSSM, pvBuf, cbBuf);
|
---|
3465 | ssmR3ProgressByByte(pSSM, cbBuf);
|
---|
3466 | break;
|
---|
3467 | }
|
---|
3468 | }
|
---|
3469 | }
|
---|
3470 | return rc;
|
---|
3471 | }
|
---|
3472 |
|
---|
3473 |
|
---|
3474 | /**
|
---|
3475 | * ssmR3DataWrite worker that is called when there isn't enough room in the
|
---|
3476 | * buffer for the current chunk of data.
|
---|
3477 | *
|
---|
3478 | * This will first flush the buffer and then add the new bits to it.
|
---|
3479 | *
|
---|
3480 | * @returns VBox status code
|
---|
3481 | * @param pSSM The saved state handle.
|
---|
3482 | * @param pvBuf The bits to write.
|
---|
3483 | * @param cbBuf The number of bytes to write.
|
---|
3484 | */
|
---|
3485 | static int ssmR3DataWriteFlushAndBuffer(PSSMHANDLE pSSM, const void *pvBuf, size_t cbBuf)
|
---|
3486 | {
|
---|
3487 | int rc = ssmR3DataFlushBuffer(pSSM);
|
---|
3488 | if (RT_SUCCESS(rc))
|
---|
3489 | {
|
---|
3490 | memcpy(&pSSM->u.Write.abDataBuffer[0], pvBuf, cbBuf);
|
---|
3491 | pSSM->u.Write.offDataBuffer = (uint32_t)cbBuf;
|
---|
3492 | pSSM->offUnitUser += cbBuf;
|
---|
3493 | }
|
---|
3494 | return rc;
|
---|
3495 | }
|
---|
3496 |
|
---|
3497 |
|
---|
3498 | /**
|
---|
3499 | * Writes data to the current data unit.
|
---|
3500 | *
|
---|
3501 | * This is an inlined wrapper that optimizes the small writes that so many of
|
---|
3502 | * the APIs make.
|
---|
3503 | *
|
---|
3504 | * @returns VBox status code
|
---|
3505 | * @param pSSM The saved state handle.
|
---|
3506 | * @param pvBuf The bits to write.
|
---|
3507 | * @param cbBuf The number of bytes to write.
|
---|
3508 | */
|
---|
3509 | DECLINLINE(int) ssmR3DataWrite(PSSMHANDLE pSSM, const void *pvBuf, size_t cbBuf)
|
---|
3510 | {
|
---|
3511 | if (cbBuf > sizeof(pSSM->u.Write.abDataBuffer) / 8)
|
---|
3512 | return ssmR3DataWriteBig(pSSM, pvBuf, cbBuf);
|
---|
3513 | if (!cbBuf)
|
---|
3514 | return VINF_SUCCESS;
|
---|
3515 |
|
---|
3516 | uint32_t off = pSSM->u.Write.offDataBuffer;
|
---|
3517 | if (RT_UNLIKELY(cbBuf + off > sizeof(pSSM->u.Write.abDataBuffer)))
|
---|
3518 | return ssmR3DataWriteFlushAndBuffer(pSSM, pvBuf, cbBuf);
|
---|
3519 |
|
---|
3520 | memcpy(&pSSM->u.Write.abDataBuffer[off], pvBuf, cbBuf);
|
---|
3521 | pSSM->u.Write.offDataBuffer = off + (uint32_t)cbBuf;
|
---|
3522 | pSSM->offUnitUser += cbBuf;
|
---|
3523 | return VINF_SUCCESS;
|
---|
3524 | }
|
---|
3525 |
|
---|
3526 |
|
---|
3527 | /**
|
---|
3528 | * Puts a structure.
|
---|
3529 | *
|
---|
3530 | * @returns VBox status code.
|
---|
3531 | * @param pSSM The saved state handle.
|
---|
3532 | * @param pvStruct The structure address.
|
---|
3533 | * @param paFields The array of structure fields descriptions.
|
---|
3534 | * The array must be terminated by a SSMFIELD_ENTRY_TERM().
|
---|
3535 | */
|
---|
3536 | VMMR3DECL(int) SSMR3PutStruct(PSSMHANDLE pSSM, const void *pvStruct, PCSSMFIELD paFields)
|
---|
3537 | {
|
---|
3538 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3539 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3540 | AssertPtr(pvStruct);
|
---|
3541 | AssertPtr(paFields);
|
---|
3542 |
|
---|
3543 | /* begin marker. */
|
---|
3544 | int rc = SSMR3PutU32(pSSM, SSMR3STRUCT_BEGIN);
|
---|
3545 | if (RT_FAILURE(rc))
|
---|
3546 | return rc;
|
---|
3547 |
|
---|
3548 | /* put the fields */
|
---|
3549 | for (PCSSMFIELD pCur = paFields;
|
---|
3550 | pCur->cb != UINT32_MAX && pCur->off != UINT32_MAX;
|
---|
3551 | pCur++)
|
---|
3552 | {
|
---|
3553 | uint8_t const *pbField = (uint8_t const *)pvStruct + pCur->off;
|
---|
3554 | switch ((uintptr_t)pCur->pfnGetPutOrTransformer)
|
---|
3555 | {
|
---|
3556 | case SSMFIELDTRANS_NO_TRANSFORMATION:
|
---|
3557 | rc = ssmR3DataWrite(pSSM, pbField, pCur->cb);
|
---|
3558 | break;
|
---|
3559 |
|
---|
3560 | case SSMFIELDTRANS_GCPTR:
|
---|
3561 | AssertMsgReturn(pCur->cb == sizeof(RTGCPTR), ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3562 | rc = SSMR3PutGCPtr(pSSM, *(PRTGCPTR)pbField);
|
---|
3563 | break;
|
---|
3564 |
|
---|
3565 | case SSMFIELDTRANS_GCPHYS:
|
---|
3566 | AssertMsgReturn(pCur->cb == sizeof(RTGCPHYS), ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3567 | rc = SSMR3PutGCPhys(pSSM, *(PRTGCPHYS)pbField);
|
---|
3568 | break;
|
---|
3569 |
|
---|
3570 | case SSMFIELDTRANS_RCPTR:
|
---|
3571 | AssertMsgReturn(pCur->cb == sizeof(RTRCPTR), ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3572 | rc = SSMR3PutRCPtr(pSSM, *(PRTRCPTR)pbField);
|
---|
3573 | break;
|
---|
3574 |
|
---|
3575 | case SSMFIELDTRANS_RCPTR_ARRAY:
|
---|
3576 | {
|
---|
3577 | uint32_t const cEntries = pCur->cb / sizeof(RTRCPTR);
|
---|
3578 | AssertMsgReturn(pCur->cb == cEntries * sizeof(RTRCPTR) && cEntries, ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3579 | rc = VINF_SUCCESS;
|
---|
3580 | for (uint32_t i = 0; i < cEntries && RT_SUCCESS(rc); i++)
|
---|
3581 | rc = SSMR3PutRCPtr(pSSM, ((PRTRCPTR)pbField)[i]);
|
---|
3582 | break;
|
---|
3583 | }
|
---|
3584 |
|
---|
3585 | default:
|
---|
3586 | AssertMsgFailedReturn(("%#x\n", pCur->pfnGetPutOrTransformer), VERR_SSM_FIELD_COMPLEX);
|
---|
3587 | }
|
---|
3588 | if (RT_FAILURE(rc))
|
---|
3589 | return rc;
|
---|
3590 | }
|
---|
3591 |
|
---|
3592 | /* end marker */
|
---|
3593 | return SSMR3PutU32(pSSM, SSMR3STRUCT_END);
|
---|
3594 | }
|
---|
3595 |
|
---|
3596 |
|
---|
3597 | /**
|
---|
3598 | * SSMR3PutStructEx helper that puts a HCPTR that is used as a NULL indicator.
|
---|
3599 | *
|
---|
3600 | * @returns VBox status code.
|
---|
3601 | *
|
---|
3602 | * @param pSSM The saved state handle.
|
---|
3603 | * @param pv The value to put.
|
---|
3604 | * @param fFlags SSMSTRUCT_FLAGS_XXX.
|
---|
3605 | */
|
---|
3606 | DECLINLINE(int) ssmR3PutHCPtrNI(PSSMHANDLE pSSM, void *pv, uint32_t fFlags)
|
---|
3607 | {
|
---|
3608 | int rc;
|
---|
3609 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3610 | rc = ssmR3DataWrite(pSSM, &pv, sizeof(void *));
|
---|
3611 | else
|
---|
3612 | rc = SSMR3PutBool(pSSM, pv != NULL);
|
---|
3613 | return rc;
|
---|
3614 | }
|
---|
3615 |
|
---|
3616 |
|
---|
3617 | /**
|
---|
3618 | * SSMR3PutStructEx helper that puts an arbitrary number of zeros.
|
---|
3619 | *
|
---|
3620 | * @returns VBox status code.
|
---|
3621 | * @param pSSM The saved state handle.
|
---|
3622 | * @param cbToFill The number of zeros to stuff into the state.
|
---|
3623 | */
|
---|
3624 | static int ssmR3PutZeros(PSSMHANDLE pSSM, uint32_t cbToFill)
|
---|
3625 | {
|
---|
3626 | while (cbToFill > 0)
|
---|
3627 | {
|
---|
3628 | uint32_t cb = RT_MIN(sizeof(g_abZero), cbToFill);
|
---|
3629 | int rc = ssmR3DataWrite(pSSM, g_abZero, cb);
|
---|
3630 | if (RT_FAILURE(rc))
|
---|
3631 | return rc;
|
---|
3632 | cbToFill -= cb;
|
---|
3633 | }
|
---|
3634 | return VINF_SUCCESS;
|
---|
3635 | }
|
---|
3636 |
|
---|
3637 |
|
---|
3638 | /**
|
---|
3639 | * Puts a structure, extended API.
|
---|
3640 | *
|
---|
3641 | * @returns VBox status code.
|
---|
3642 | * @param pSSM The saved state handle.
|
---|
3643 | * @param pvStruct The structure address.
|
---|
3644 | * @param cbStruct The size of the struct (use for validation only).
|
---|
3645 | * @param fFlags Combination of SSMSTRUCT_FLAGS_XXX defines.
|
---|
3646 | * @param paFields The array of structure fields descriptions. The
|
---|
3647 | * array must be terminated by a SSMFIELD_ENTRY_TERM().
|
---|
3648 | * @param pvUser User argument for any callbacks that paFields might
|
---|
3649 | * contain.
|
---|
3650 | */
|
---|
3651 | VMMR3DECL(int) SSMR3PutStructEx(PSSMHANDLE pSSM, const void *pvStruct, size_t cbStruct,
|
---|
3652 | uint32_t fFlags, PCSSMFIELD paFields, void *pvUser)
|
---|
3653 | {
|
---|
3654 | int rc;
|
---|
3655 |
|
---|
3656 | /*
|
---|
3657 | * Validation.
|
---|
3658 | */
|
---|
3659 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3660 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3661 | AssertMsgReturn(!(fFlags & ~SSMSTRUCT_FLAGS_VALID_MASK), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
|
---|
3662 | AssertPtr(pvStruct);
|
---|
3663 | AssertPtr(paFields);
|
---|
3664 |
|
---|
3665 |
|
---|
3666 | /*
|
---|
3667 | * Begin marker.
|
---|
3668 | */
|
---|
3669 | if (!(fFlags & SSMSTRUCT_FLAGS_NO_MARKERS))
|
---|
3670 | {
|
---|
3671 | rc = SSMR3PutU32(pSSM, SSMR3STRUCT_BEGIN);
|
---|
3672 | if (RT_FAILURE(rc))
|
---|
3673 | return rc;
|
---|
3674 | }
|
---|
3675 |
|
---|
3676 | /*
|
---|
3677 | * Put the fields
|
---|
3678 | */
|
---|
3679 | uint32_t off = 0;
|
---|
3680 | for (PCSSMFIELD pCur = paFields;
|
---|
3681 | pCur->cb != UINT32_MAX && pCur->off != UINT32_MAX;
|
---|
3682 | pCur++)
|
---|
3683 | {
|
---|
3684 | uint32_t const offField = (!SSMFIELDTRANS_IS_PADDING(pCur->pfnGetPutOrTransformer) || pCur->off != UINT32_MAX / 2)
|
---|
3685 | && !SSMFIELDTRANS_IS_OLD(pCur->pfnGetPutOrTransformer)
|
---|
3686 | ? pCur->off
|
---|
3687 | : off;
|
---|
3688 | uint32_t const cbField = SSMFIELDTRANS_IS_OLD(pCur->pfnGetPutOrTransformer)
|
---|
3689 | ? 0
|
---|
3690 | : SSMFIELDTRANS_IS_PADDING(pCur->pfnGetPutOrTransformer)
|
---|
3691 | ? RT_HIWORD(pCur->cb)
|
---|
3692 | : pCur->cb;
|
---|
3693 | AssertMsgReturn( cbField <= cbStruct
|
---|
3694 | && offField + cbField <= cbStruct
|
---|
3695 | && offField + cbField >= offField,
|
---|
3696 | ("off=%#x cb=%#x cbStruct=%#x (%s)\n", cbField, offField, cbStruct, pCur->pszName),
|
---|
3697 | VERR_SSM_FIELD_OUT_OF_BOUNDS);
|
---|
3698 | AssertMsgReturn( !(fFlags & SSMSTRUCT_FLAGS_FULL_STRUCT)
|
---|
3699 | || off == offField,
|
---|
3700 | ("off=%#x offField=%#x (%s)\n", off, offField, pCur->pszName),
|
---|
3701 | VERR_SSM_FIELD_NOT_CONSECUTIVE);
|
---|
3702 |
|
---|
3703 | rc = VINF_SUCCESS;
|
---|
3704 | uint8_t const *pbField = (uint8_t const *)pvStruct + offField;
|
---|
3705 | switch ((uintptr_t)pCur->pfnGetPutOrTransformer)
|
---|
3706 | {
|
---|
3707 | case SSMFIELDTRANS_NO_TRANSFORMATION:
|
---|
3708 | rc = ssmR3DataWrite(pSSM, pbField, cbField);
|
---|
3709 | break;
|
---|
3710 |
|
---|
3711 | case SSMFIELDTRANS_GCPHYS:
|
---|
3712 | AssertMsgReturn(cbField == sizeof(RTGCPHYS), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3713 | rc = SSMR3PutGCPhys(pSSM, *(PRTGCPHYS)pbField);
|
---|
3714 | break;
|
---|
3715 |
|
---|
3716 | case SSMFIELDTRANS_GCPTR:
|
---|
3717 | AssertMsgReturn(cbField == sizeof(RTGCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3718 | rc = SSMR3PutGCPtr(pSSM, *(PRTGCPTR)pbField);
|
---|
3719 | break;
|
---|
3720 |
|
---|
3721 | case SSMFIELDTRANS_RCPTR:
|
---|
3722 | AssertMsgReturn(cbField == sizeof(RTRCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3723 | rc = SSMR3PutRCPtr(pSSM, *(PRTRCPTR)pbField);
|
---|
3724 | break;
|
---|
3725 |
|
---|
3726 | case SSMFIELDTRANS_RCPTR_ARRAY:
|
---|
3727 | {
|
---|
3728 | uint32_t const cEntries = cbField / sizeof(RTRCPTR);
|
---|
3729 | AssertMsgReturn(cbField == cEntries * sizeof(RTRCPTR) && cEntries, ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3730 | for (uint32_t i = 0; i < cEntries && RT_SUCCESS(rc); i++)
|
---|
3731 | rc = SSMR3PutRCPtr(pSSM, ((PRTRCPTR)pbField)[i]);
|
---|
3732 | break;
|
---|
3733 | }
|
---|
3734 |
|
---|
3735 | case SSMFIELDTRANS_HCPTR_NI:
|
---|
3736 | AssertMsgReturn(cbField == sizeof(void *), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3737 | rc = ssmR3PutHCPtrNI(pSSM, *(void * const *)pbField, fFlags);
|
---|
3738 | break;
|
---|
3739 |
|
---|
3740 | case SSMFIELDTRANS_HCPTR_NI_ARRAY:
|
---|
3741 | {
|
---|
3742 | uint32_t const cEntries = cbField / sizeof(void *);
|
---|
3743 | AssertMsgReturn(cbField == cEntries * sizeof(void *) && cEntries, ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3744 | for (uint32_t i = 0; i < cEntries && RT_SUCCESS(rc); i++)
|
---|
3745 | rc = ssmR3PutHCPtrNI(pSSM, ((void * const *)pbField)[i], fFlags);
|
---|
3746 | break;
|
---|
3747 | }
|
---|
3748 |
|
---|
3749 | case SSMFIELDTRANS_HCPTR_HACK_U32:
|
---|
3750 | AssertMsgReturn(cbField == sizeof(void *), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3751 | AssertMsgReturn(*(uintptr_t *)pbField <= UINT32_MAX, ("%p (%s)\n", *(uintptr_t *)pbField, pCur->pszName), VERR_SSM_FIELD_INVALID_VALUE);
|
---|
3752 | rc = ssmR3DataWrite(pSSM, pbField, sizeof(uint32_t));
|
---|
3753 | if ((fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE) && sizeof(void *) != sizeof(uint32_t))
|
---|
3754 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(uint32_t));
|
---|
3755 | break;
|
---|
3756 |
|
---|
3757 | case SSMFIELDTRANS_U32_ZX_U64:
|
---|
3758 | AssertFailedReturn(VERR_SSM_FIELD_LOAD_ONLY_TRANSFORMATION);
|
---|
3759 | break;
|
---|
3760 |
|
---|
3761 | case SSMFIELDTRANS_IGNORE:
|
---|
3762 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3763 | rc = ssmR3PutZeros(pSSM, cbField);
|
---|
3764 | break;
|
---|
3765 |
|
---|
3766 | case SSMFIELDTRANS_IGN_GCPHYS:
|
---|
3767 | AssertMsgReturn(cbField == sizeof(RTGCPHYS), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3768 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3769 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(RTGCPHYS));
|
---|
3770 | break;
|
---|
3771 |
|
---|
3772 | case SSMFIELDTRANS_IGN_GCPTR:
|
---|
3773 | AssertMsgReturn(cbField == sizeof(RTGCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3774 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3775 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(RTGCPTR));
|
---|
3776 | break;
|
---|
3777 |
|
---|
3778 | case SSMFIELDTRANS_IGN_RCPTR:
|
---|
3779 | AssertMsgReturn(cbField == sizeof(RTRCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3780 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3781 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(RTRCPTR));
|
---|
3782 | break;
|
---|
3783 |
|
---|
3784 | case SSMFIELDTRANS_IGN_HCPTR:
|
---|
3785 | AssertMsgReturn(cbField == sizeof(void *), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3786 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3787 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(void *));
|
---|
3788 | break;
|
---|
3789 |
|
---|
3790 |
|
---|
3791 | case SSMFIELDTRANS_OLD:
|
---|
3792 | AssertMsgReturn(pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3793 | rc = ssmR3PutZeros(pSSM, pCur->cb);
|
---|
3794 | break;
|
---|
3795 |
|
---|
3796 | case SSMFIELDTRANS_OLD_GCPHYS:
|
---|
3797 | AssertMsgReturn(pCur->cb == sizeof(RTGCPHYS) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3798 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(RTGCPHYS));
|
---|
3799 | break;
|
---|
3800 |
|
---|
3801 | case SSMFIELDTRANS_OLD_GCPTR:
|
---|
3802 | AssertMsgReturn(pCur->cb == sizeof(RTGCPTR) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3803 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(RTGCPTR));
|
---|
3804 | break;
|
---|
3805 |
|
---|
3806 | case SSMFIELDTRANS_OLD_RCPTR:
|
---|
3807 | AssertMsgReturn(pCur->cb == sizeof(RTRCPTR) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3808 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(RTRCPTR));
|
---|
3809 | break;
|
---|
3810 |
|
---|
3811 | case SSMFIELDTRANS_OLD_HCPTR:
|
---|
3812 | AssertMsgReturn(pCur->cb == sizeof(void *) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3813 | rc = ssmR3DataWrite(pSSM, g_abZero, sizeof(void *));
|
---|
3814 | break;
|
---|
3815 |
|
---|
3816 | case SSMFIELDTRANS_OLD_PAD_HC:
|
---|
3817 | AssertMsgReturn(pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3818 | rc = ssmR3PutZeros(pSSM, HC_ARCH_BITS == 64 ? RT_HIWORD(pCur->cb) : RT_LOWORD(pCur->cb));
|
---|
3819 | break;
|
---|
3820 |
|
---|
3821 | case SSMFIELDTRANS_OLD_PAD_MSC32:
|
---|
3822 | AssertMsgReturn(pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
3823 | if (SSM_HOST_IS_MSC_32)
|
---|
3824 | rc = ssmR3PutZeros(pSSM, pCur->cb);
|
---|
3825 | break;
|
---|
3826 |
|
---|
3827 |
|
---|
3828 | case SSMFIELDTRANS_PAD_HC:
|
---|
3829 | case SSMFIELDTRANS_PAD_HC32:
|
---|
3830 | case SSMFIELDTRANS_PAD_HC64:
|
---|
3831 | case SSMFIELDTRANS_PAD_HC_AUTO:
|
---|
3832 | case SSMFIELDTRANS_PAD_MSC32_AUTO:
|
---|
3833 | {
|
---|
3834 | uint32_t cb32 = RT_BYTE1(pCur->cb);
|
---|
3835 | uint32_t cb64 = RT_BYTE2(pCur->cb);
|
---|
3836 | uint32_t cbCtx = HC_ARCH_BITS == 64
|
---|
3837 | || ( (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_MSC32_AUTO
|
---|
3838 | && !SSM_HOST_IS_MSC_32)
|
---|
3839 | ? cb64 : cb32;
|
---|
3840 | uint32_t cbSaved = ssmR3GetHostBits(pSSM) == 64
|
---|
3841 | || ( (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_MSC32_AUTO
|
---|
3842 | && !ssmR3IsHostMsc32(pSSM))
|
---|
3843 | ? cb64 : cb32;
|
---|
3844 | AssertMsgReturn( cbField == cbCtx
|
---|
3845 | && ( ( pCur->off == UINT32_MAX / 2
|
---|
3846 | && ( cbField == 0
|
---|
3847 | || (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_HC_AUTO
|
---|
3848 | || (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_MSC32_AUTO
|
---|
3849 | )
|
---|
3850 | )
|
---|
3851 | || (pCur->off != UINT32_MAX / 2 && cbField != 0)
|
---|
3852 | )
|
---|
3853 | , ("cbField=%#x cb32=%#x cb64=%#x HC_ARCH_BITS=%u cbCtx=%#x cbSaved=%#x off=%#x\n",
|
---|
3854 | cbField, cb32, cb64, HC_ARCH_BITS, cbCtx, cbSaved, pCur->off),
|
---|
3855 | VERR_SSM_FIELD_INVALID_PADDING_SIZE);
|
---|
3856 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
3857 | rc = ssmR3PutZeros(pSSM, cbSaved);
|
---|
3858 | break;
|
---|
3859 | }
|
---|
3860 |
|
---|
3861 | default:
|
---|
3862 | AssertPtrReturn(pCur->pfnGetPutOrTransformer, VERR_SSM_FIELD_INVALID_CALLBACK);
|
---|
3863 | rc = pCur->pfnGetPutOrTransformer(pSSM, pCur, (void *)pvStruct, fFlags, false /*fGetOrPut*/, pvUser);
|
---|
3864 | break;
|
---|
3865 | }
|
---|
3866 | if (RT_FAILURE(rc))
|
---|
3867 | return rc;
|
---|
3868 |
|
---|
3869 | off = offField + cbField;
|
---|
3870 | }
|
---|
3871 | AssertMsgReturn( !(fFlags & SSMSTRUCT_FLAGS_FULL_STRUCT)
|
---|
3872 | || off == cbStruct,
|
---|
3873 | ("off=%#x cbStruct=%#x\n", off, cbStruct),
|
---|
3874 | VERR_SSM_FIELD_NOT_CONSECUTIVE);
|
---|
3875 |
|
---|
3876 | /*
|
---|
3877 | * End marker
|
---|
3878 | */
|
---|
3879 | if (!(fFlags & SSMSTRUCT_FLAGS_NO_MARKERS))
|
---|
3880 | {
|
---|
3881 | rc = SSMR3PutU32(pSSM, SSMR3STRUCT_END);
|
---|
3882 | if (RT_FAILURE(rc))
|
---|
3883 | return rc;
|
---|
3884 | }
|
---|
3885 |
|
---|
3886 | return VINF_SUCCESS;
|
---|
3887 | }
|
---|
3888 |
|
---|
3889 |
|
---|
3890 | /**
|
---|
3891 | * Saves a boolean item to the current data unit.
|
---|
3892 | *
|
---|
3893 | * @returns VBox status.
|
---|
3894 | * @param pSSM The saved state handle.
|
---|
3895 | * @param fBool Item to save.
|
---|
3896 | */
|
---|
3897 | VMMR3DECL(int) SSMR3PutBool(PSSMHANDLE pSSM, bool fBool)
|
---|
3898 | {
|
---|
3899 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3900 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3901 | uint8_t u8 = fBool; /* enforce 1 byte size */
|
---|
3902 | return ssmR3DataWrite(pSSM, &u8, sizeof(u8));
|
---|
3903 | }
|
---|
3904 |
|
---|
3905 |
|
---|
3906 | /**
|
---|
3907 | * Saves a 8-bit unsigned integer item to the current data unit.
|
---|
3908 | *
|
---|
3909 | * @returns VBox status.
|
---|
3910 | * @param pSSM The saved state handle.
|
---|
3911 | * @param u8 Item to save.
|
---|
3912 | */
|
---|
3913 | VMMR3DECL(int) SSMR3PutU8(PSSMHANDLE pSSM, uint8_t u8)
|
---|
3914 | {
|
---|
3915 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3916 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3917 | return ssmR3DataWrite(pSSM, &u8, sizeof(u8));
|
---|
3918 | }
|
---|
3919 |
|
---|
3920 |
|
---|
3921 | /**
|
---|
3922 | * Saves a 8-bit signed integer item to the current data unit.
|
---|
3923 | *
|
---|
3924 | * @returns VBox status.
|
---|
3925 | * @param pSSM The saved state handle.
|
---|
3926 | * @param i8 Item to save.
|
---|
3927 | */
|
---|
3928 | VMMR3DECL(int) SSMR3PutS8(PSSMHANDLE pSSM, int8_t i8)
|
---|
3929 | {
|
---|
3930 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3931 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3932 | return ssmR3DataWrite(pSSM, &i8, sizeof(i8));
|
---|
3933 | }
|
---|
3934 |
|
---|
3935 |
|
---|
3936 | /**
|
---|
3937 | * Saves a 16-bit unsigned integer item to the current data unit.
|
---|
3938 | *
|
---|
3939 | * @returns VBox status.
|
---|
3940 | * @param pSSM The saved state handle.
|
---|
3941 | * @param u16 Item to save.
|
---|
3942 | */
|
---|
3943 | VMMR3DECL(int) SSMR3PutU16(PSSMHANDLE pSSM, uint16_t u16)
|
---|
3944 | {
|
---|
3945 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3946 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3947 | return ssmR3DataWrite(pSSM, &u16, sizeof(u16));
|
---|
3948 | }
|
---|
3949 |
|
---|
3950 |
|
---|
3951 | /**
|
---|
3952 | * Saves a 16-bit signed integer item to the current data unit.
|
---|
3953 | *
|
---|
3954 | * @returns VBox status.
|
---|
3955 | * @param pSSM The saved state handle.
|
---|
3956 | * @param i16 Item to save.
|
---|
3957 | */
|
---|
3958 | VMMR3DECL(int) SSMR3PutS16(PSSMHANDLE pSSM, int16_t i16)
|
---|
3959 | {
|
---|
3960 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3961 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3962 | return ssmR3DataWrite(pSSM, &i16, sizeof(i16));
|
---|
3963 | }
|
---|
3964 |
|
---|
3965 |
|
---|
3966 | /**
|
---|
3967 | * Saves a 32-bit unsigned integer item to the current data unit.
|
---|
3968 | *
|
---|
3969 | * @returns VBox status.
|
---|
3970 | * @param pSSM The saved state handle.
|
---|
3971 | * @param u32 Item to save.
|
---|
3972 | */
|
---|
3973 | VMMR3DECL(int) SSMR3PutU32(PSSMHANDLE pSSM, uint32_t u32)
|
---|
3974 | {
|
---|
3975 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3976 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3977 | return ssmR3DataWrite(pSSM, &u32, sizeof(u32));
|
---|
3978 | }
|
---|
3979 |
|
---|
3980 |
|
---|
3981 | /**
|
---|
3982 | * Saves a 32-bit signed integer item to the current data unit.
|
---|
3983 | *
|
---|
3984 | * @returns VBox status.
|
---|
3985 | * @param pSSM The saved state handle.
|
---|
3986 | * @param i32 Item to save.
|
---|
3987 | */
|
---|
3988 | VMMR3DECL(int) SSMR3PutS32(PSSMHANDLE pSSM, int32_t i32)
|
---|
3989 | {
|
---|
3990 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
3991 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
3992 | return ssmR3DataWrite(pSSM, &i32, sizeof(i32));
|
---|
3993 | }
|
---|
3994 |
|
---|
3995 |
|
---|
3996 | /**
|
---|
3997 | * Saves a 64-bit unsigned integer item to the current data unit.
|
---|
3998 | *
|
---|
3999 | * @returns VBox status.
|
---|
4000 | * @param pSSM The saved state handle.
|
---|
4001 | * @param u64 Item to save.
|
---|
4002 | */
|
---|
4003 | VMMR3DECL(int) SSMR3PutU64(PSSMHANDLE pSSM, uint64_t u64)
|
---|
4004 | {
|
---|
4005 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4006 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4007 | return ssmR3DataWrite(pSSM, &u64, sizeof(u64));
|
---|
4008 | }
|
---|
4009 |
|
---|
4010 |
|
---|
4011 | /**
|
---|
4012 | * Saves a 64-bit signed integer item to the current data unit.
|
---|
4013 | *
|
---|
4014 | * @returns VBox status.
|
---|
4015 | * @param pSSM The saved state handle.
|
---|
4016 | * @param i64 Item to save.
|
---|
4017 | */
|
---|
4018 | VMMR3DECL(int) SSMR3PutS64(PSSMHANDLE pSSM, int64_t i64)
|
---|
4019 | {
|
---|
4020 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4021 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4022 | return ssmR3DataWrite(pSSM, &i64, sizeof(i64));
|
---|
4023 | }
|
---|
4024 |
|
---|
4025 |
|
---|
4026 | /**
|
---|
4027 | * Saves a 128-bit unsigned integer item to the current data unit.
|
---|
4028 | *
|
---|
4029 | * @returns VBox status.
|
---|
4030 | * @param pSSM The saved state handle.
|
---|
4031 | * @param u128 Item to save.
|
---|
4032 | */
|
---|
4033 | VMMR3DECL(int) SSMR3PutU128(PSSMHANDLE pSSM, uint128_t u128)
|
---|
4034 | {
|
---|
4035 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4036 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4037 | return ssmR3DataWrite(pSSM, &u128, sizeof(u128));
|
---|
4038 | }
|
---|
4039 |
|
---|
4040 |
|
---|
4041 | /**
|
---|
4042 | * Saves a 128-bit signed integer item to the current data unit.
|
---|
4043 | *
|
---|
4044 | * @returns VBox status.
|
---|
4045 | * @param pSSM The saved state handle.
|
---|
4046 | * @param i128 Item to save.
|
---|
4047 | */
|
---|
4048 | VMMR3DECL(int) SSMR3PutS128(PSSMHANDLE pSSM, int128_t i128)
|
---|
4049 | {
|
---|
4050 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4051 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4052 | return ssmR3DataWrite(pSSM, &i128, sizeof(i128));
|
---|
4053 | }
|
---|
4054 |
|
---|
4055 |
|
---|
4056 | /**
|
---|
4057 | * Saves a VBox unsigned integer item to the current data unit.
|
---|
4058 | *
|
---|
4059 | * @returns VBox status.
|
---|
4060 | * @param pSSM The saved state handle.
|
---|
4061 | * @param u Item to save.
|
---|
4062 | */
|
---|
4063 | VMMR3DECL(int) SSMR3PutUInt(PSSMHANDLE pSSM, RTUINT u)
|
---|
4064 | {
|
---|
4065 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4066 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4067 | return ssmR3DataWrite(pSSM, &u, sizeof(u));
|
---|
4068 | }
|
---|
4069 |
|
---|
4070 |
|
---|
4071 | /**
|
---|
4072 | * Saves a VBox signed integer item to the current data unit.
|
---|
4073 | *
|
---|
4074 | * @returns VBox status.
|
---|
4075 | * @param pSSM The saved state handle.
|
---|
4076 | * @param i Item to save.
|
---|
4077 | */
|
---|
4078 | VMMR3DECL(int) SSMR3PutSInt(PSSMHANDLE pSSM, RTINT i)
|
---|
4079 | {
|
---|
4080 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4081 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4082 | return ssmR3DataWrite(pSSM, &i, sizeof(i));
|
---|
4083 | }
|
---|
4084 |
|
---|
4085 |
|
---|
4086 | /**
|
---|
4087 | * Saves a GC natural unsigned integer item to the current data unit.
|
---|
4088 | *
|
---|
4089 | * @returns VBox status.
|
---|
4090 | * @param pSSM The saved state handle.
|
---|
4091 | * @param u Item to save.
|
---|
4092 | *
|
---|
4093 | * @deprecated Silly type, don't use it.
|
---|
4094 | */
|
---|
4095 | VMMR3DECL(int) SSMR3PutGCUInt(PSSMHANDLE pSSM, RTGCUINT u)
|
---|
4096 | {
|
---|
4097 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4098 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4099 | return ssmR3DataWrite(pSSM, &u, sizeof(u));
|
---|
4100 | }
|
---|
4101 |
|
---|
4102 |
|
---|
4103 | /**
|
---|
4104 | * Saves a GC unsigned integer register item to the current data unit.
|
---|
4105 | *
|
---|
4106 | * @returns VBox status.
|
---|
4107 | * @param pSSM The saved state handle.
|
---|
4108 | * @param u Item to save.
|
---|
4109 | */
|
---|
4110 | VMMR3DECL(int) SSMR3PutGCUIntReg(PSSMHANDLE pSSM, RTGCUINTREG u)
|
---|
4111 | {
|
---|
4112 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4113 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4114 | return ssmR3DataWrite(pSSM, &u, sizeof(u));
|
---|
4115 | }
|
---|
4116 |
|
---|
4117 |
|
---|
4118 | /**
|
---|
4119 | * Saves a 32 bits GC physical address item to the current data unit.
|
---|
4120 | *
|
---|
4121 | * @returns VBox status.
|
---|
4122 | * @param pSSM The saved state handle.
|
---|
4123 | * @param GCPhys The item to save
|
---|
4124 | */
|
---|
4125 | VMMR3DECL(int) SSMR3PutGCPhys32(PSSMHANDLE pSSM, RTGCPHYS32 GCPhys)
|
---|
4126 | {
|
---|
4127 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4128 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4129 | return ssmR3DataWrite(pSSM, &GCPhys, sizeof(GCPhys));
|
---|
4130 | }
|
---|
4131 |
|
---|
4132 |
|
---|
4133 | /**
|
---|
4134 | * Saves a 64 bits GC physical address item to the current data unit.
|
---|
4135 | *
|
---|
4136 | * @returns VBox status.
|
---|
4137 | * @param pSSM The saved state handle.
|
---|
4138 | * @param GCPhys The item to save
|
---|
4139 | */
|
---|
4140 | VMMR3DECL(int) SSMR3PutGCPhys64(PSSMHANDLE pSSM, RTGCPHYS64 GCPhys)
|
---|
4141 | {
|
---|
4142 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4143 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4144 | return ssmR3DataWrite(pSSM, &GCPhys, sizeof(GCPhys));
|
---|
4145 | }
|
---|
4146 |
|
---|
4147 |
|
---|
4148 | /**
|
---|
4149 | * Saves a GC physical address item to the current data unit.
|
---|
4150 | *
|
---|
4151 | * @returns VBox status.
|
---|
4152 | * @param pSSM The saved state handle.
|
---|
4153 | * @param GCPhys The item to save
|
---|
4154 | */
|
---|
4155 | VMMR3DECL(int) SSMR3PutGCPhys(PSSMHANDLE pSSM, RTGCPHYS GCPhys)
|
---|
4156 | {
|
---|
4157 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4158 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4159 | return ssmR3DataWrite(pSSM, &GCPhys, sizeof(GCPhys));
|
---|
4160 | }
|
---|
4161 |
|
---|
4162 |
|
---|
4163 | /**
|
---|
4164 | * Saves a GC virtual address item to the current data unit.
|
---|
4165 | *
|
---|
4166 | * @returns VBox status.
|
---|
4167 | * @param pSSM The saved state handle.
|
---|
4168 | * @param GCPtr The item to save.
|
---|
4169 | */
|
---|
4170 | VMMR3DECL(int) SSMR3PutGCPtr(PSSMHANDLE pSSM, RTGCPTR GCPtr)
|
---|
4171 | {
|
---|
4172 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4173 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4174 | return ssmR3DataWrite(pSSM, &GCPtr, sizeof(GCPtr));
|
---|
4175 | }
|
---|
4176 |
|
---|
4177 |
|
---|
4178 | /**
|
---|
4179 | * Saves an RC virtual address item to the current data unit.
|
---|
4180 | *
|
---|
4181 | * @returns VBox status.
|
---|
4182 | * @param pSSM The saved state handle.
|
---|
4183 | * @param RCPtr The item to save.
|
---|
4184 | */
|
---|
4185 | VMMR3DECL(int) SSMR3PutRCPtr(PSSMHANDLE pSSM, RTRCPTR RCPtr)
|
---|
4186 | {
|
---|
4187 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4188 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4189 | return ssmR3DataWrite(pSSM, &RCPtr, sizeof(RCPtr));
|
---|
4190 | }
|
---|
4191 |
|
---|
4192 |
|
---|
4193 | /**
|
---|
4194 | * Saves a GC virtual address (represented as an unsigned integer) item to the current data unit.
|
---|
4195 | *
|
---|
4196 | * @returns VBox status.
|
---|
4197 | * @param pSSM The saved state handle.
|
---|
4198 | * @param GCPtr The item to save.
|
---|
4199 | */
|
---|
4200 | VMMR3DECL(int) SSMR3PutGCUIntPtr(PSSMHANDLE pSSM, RTGCUINTPTR GCPtr)
|
---|
4201 | {
|
---|
4202 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4203 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4204 | return ssmR3DataWrite(pSSM, &GCPtr, sizeof(GCPtr));
|
---|
4205 | }
|
---|
4206 |
|
---|
4207 |
|
---|
4208 | /**
|
---|
4209 | * Saves a I/O port address item to the current data unit.
|
---|
4210 | *
|
---|
4211 | * @returns VBox status.
|
---|
4212 | * @param pSSM The saved state handle.
|
---|
4213 | * @param IOPort The item to save.
|
---|
4214 | */
|
---|
4215 | VMMR3DECL(int) SSMR3PutIOPort(PSSMHANDLE pSSM, RTIOPORT IOPort)
|
---|
4216 | {
|
---|
4217 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4218 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4219 | return ssmR3DataWrite(pSSM, &IOPort, sizeof(IOPort));
|
---|
4220 | }
|
---|
4221 |
|
---|
4222 |
|
---|
4223 | /**
|
---|
4224 | * Saves a selector item to the current data unit.
|
---|
4225 | *
|
---|
4226 | * @returns VBox status.
|
---|
4227 | * @param pSSM The saved state handle.
|
---|
4228 | * @param Sel The item to save.
|
---|
4229 | */
|
---|
4230 | VMMR3DECL(int) SSMR3PutSel(PSSMHANDLE pSSM, RTSEL Sel)
|
---|
4231 | {
|
---|
4232 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4233 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4234 | return ssmR3DataWrite(pSSM, &Sel, sizeof(Sel));
|
---|
4235 | }
|
---|
4236 |
|
---|
4237 |
|
---|
4238 | /**
|
---|
4239 | * Saves a memory item to the current data unit.
|
---|
4240 | *
|
---|
4241 | * @returns VBox status.
|
---|
4242 | * @param pSSM The saved state handle.
|
---|
4243 | * @param pv Item to save.
|
---|
4244 | * @param cb Size of the item.
|
---|
4245 | */
|
---|
4246 | VMMR3DECL(int) SSMR3PutMem(PSSMHANDLE pSSM, const void *pv, size_t cb)
|
---|
4247 | {
|
---|
4248 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4249 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4250 | return ssmR3DataWrite(pSSM, pv, cb);
|
---|
4251 | }
|
---|
4252 |
|
---|
4253 |
|
---|
4254 | /**
|
---|
4255 | * Saves a zero terminated string item to the current data unit.
|
---|
4256 | *
|
---|
4257 | * @returns VBox status.
|
---|
4258 | * @param pSSM The saved state handle.
|
---|
4259 | * @param psz Item to save.
|
---|
4260 | */
|
---|
4261 | VMMR3DECL(int) SSMR3PutStrZ(PSSMHANDLE pSSM, const char *psz)
|
---|
4262 | {
|
---|
4263 | SSM_ASSERT_WRITEABLE_RET(pSSM);
|
---|
4264 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
4265 |
|
---|
4266 | size_t cch = strlen(psz);
|
---|
4267 | if (cch > _1M)
|
---|
4268 | {
|
---|
4269 | AssertMsgFailed(("a %zu byte long string, what's this!?!\n", cch));
|
---|
4270 | return VERR_TOO_MUCH_DATA;
|
---|
4271 | }
|
---|
4272 | uint32_t u32 = (uint32_t)cch;
|
---|
4273 | int rc = ssmR3DataWrite(pSSM, &u32, sizeof(u32));
|
---|
4274 | if (rc)
|
---|
4275 | return rc;
|
---|
4276 | return ssmR3DataWrite(pSSM, psz, cch);
|
---|
4277 | }
|
---|
4278 |
|
---|
4279 |
|
---|
4280 | /**
|
---|
4281 | * Emits a SSMLiveControl unit with a new progress report.
|
---|
4282 | *
|
---|
4283 | * @returns VBox status code.
|
---|
4284 | * @param pSSM The saved state handle.
|
---|
4285 | * @param lrdPct The progress of the live save.
|
---|
4286 | * @param uPass The current pass.
|
---|
4287 | */
|
---|
4288 | static int ssmR3LiveControlEmit(PSSMHANDLE pSSM, long double lrdPct, uint32_t uPass)
|
---|
4289 | {
|
---|
4290 | AssertMsg(lrdPct <= 100.0, ("%u\n", lrdPct * 100));
|
---|
4291 |
|
---|
4292 | /*
|
---|
4293 | * Make sure we're in one of the two EXEC states or we may fail.
|
---|
4294 | */
|
---|
4295 | SSMSTATE enmSavedState = pSSM->enmOp;
|
---|
4296 | if (enmSavedState == SSMSTATE_LIVE_VOTE)
|
---|
4297 | pSSM->enmOp = SSMSTATE_LIVE_EXEC;
|
---|
4298 | else if (enmSavedState == SSMSTATE_SAVE_DONE)
|
---|
4299 | pSSM->enmOp = SSMSTATE_SAVE_EXEC;
|
---|
4300 |
|
---|
4301 | /*
|
---|
4302 | * Write the unit header.
|
---|
4303 | */
|
---|
4304 | SSMFILEUNITHDRV2 UnitHdr;
|
---|
4305 | memcpy(&UnitHdr.szMagic[0], SSMFILEUNITHDR_MAGIC, sizeof(UnitHdr.szMagic));
|
---|
4306 | UnitHdr.offStream = ssmR3StrmTell(&pSSM->Strm);
|
---|
4307 | UnitHdr.u32CurStreamCRC = ssmR3StrmCurCRC(&pSSM->Strm);
|
---|
4308 | UnitHdr.u32CRC = 0;
|
---|
4309 | UnitHdr.u32Version = 1;
|
---|
4310 | UnitHdr.u32Instance = 0;
|
---|
4311 | UnitHdr.u32Pass = uPass;
|
---|
4312 | UnitHdr.fFlags = 0;
|
---|
4313 | UnitHdr.cbName = sizeof("SSMLiveControl");
|
---|
4314 | memcpy(&UnitHdr.szName[0], "SSMLiveControl", UnitHdr.cbName);
|
---|
4315 | UnitHdr.u32CRC = RTCrc32(&UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]));
|
---|
4316 | Log(("SSM: Unit at %#9llx: '%s', instance %u, pass %#x, version %u\n",
|
---|
4317 | UnitHdr.offStream, UnitHdr.szName, UnitHdr.u32Instance, UnitHdr.u32Pass, UnitHdr.u32Version));
|
---|
4318 | int rc = ssmR3StrmWrite(&pSSM->Strm, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]));
|
---|
4319 | if (RT_SUCCESS(rc))
|
---|
4320 | {
|
---|
4321 | /*
|
---|
4322 | * Write the payload.
|
---|
4323 | */
|
---|
4324 | ssmR3DataWriteBegin(pSSM);
|
---|
4325 |
|
---|
4326 | uint16_t u16PartsPerTenThousand = (uint16_t)(lrdPct * (100 - pSSM->uPercentDone));
|
---|
4327 | AssertMsg(u16PartsPerTenThousand <= 10000, ("%u\n", u16PartsPerTenThousand));
|
---|
4328 | ssmR3DataWrite(pSSM, &u16PartsPerTenThousand, sizeof(u16PartsPerTenThousand));
|
---|
4329 |
|
---|
4330 | rc = ssmR3DataFlushBuffer(pSSM); /* will return SSMHANDLE::rc if it is set */
|
---|
4331 | if (RT_SUCCESS(rc))
|
---|
4332 | {
|
---|
4333 | /*
|
---|
4334 | * Write the termination record and flush the compression stream.
|
---|
4335 | */
|
---|
4336 | SSMRECTERM TermRec;
|
---|
4337 | TermRec.u8TypeAndFlags = SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_TERM;
|
---|
4338 | TermRec.cbRec = sizeof(TermRec) - 2;
|
---|
4339 | if (pSSM->Strm.fChecksummed)
|
---|
4340 | {
|
---|
4341 | TermRec.fFlags = SSMRECTERM_FLAGS_CRC32;
|
---|
4342 | TermRec.u32StreamCRC = RTCrc32Finish(RTCrc32Process(ssmR3StrmCurCRC(&pSSM->Strm), &TermRec, 2));
|
---|
4343 | }
|
---|
4344 | else
|
---|
4345 | {
|
---|
4346 | TermRec.fFlags = 0;
|
---|
4347 | TermRec.u32StreamCRC = 0;
|
---|
4348 | }
|
---|
4349 | TermRec.cbUnit = pSSM->offUnit + sizeof(TermRec);
|
---|
4350 | rc = ssmR3DataWriteRaw(pSSM, &TermRec, sizeof(TermRec));
|
---|
4351 | if (RT_SUCCESS(rc))
|
---|
4352 | rc = ssmR3DataWriteFinish(pSSM);
|
---|
4353 | if (RT_SUCCESS(rc))
|
---|
4354 | {
|
---|
4355 | pSSM->enmOp = enmSavedState;
|
---|
4356 | return rc;
|
---|
4357 | }
|
---|
4358 | }
|
---|
4359 | }
|
---|
4360 |
|
---|
4361 | LogRel(("SSM: Failed to write live control unit. rc=%Rrc\n", rc));
|
---|
4362 | if (RT_SUCCESS_NP(pSSM->rc))
|
---|
4363 | pSSM->rc = rc;
|
---|
4364 | pSSM->enmOp = enmSavedState;
|
---|
4365 | return rc;
|
---|
4366 | }
|
---|
4367 |
|
---|
4368 |
|
---|
4369 |
|
---|
4370 | /**
|
---|
4371 | * Enters the critical session (optionally) associated with the unit.
|
---|
4372 | *
|
---|
4373 | * @param pUnit The unit.
|
---|
4374 | */
|
---|
4375 | DECLINLINE(void) ssmR3UnitCritSectEnter(PSSMUNIT pUnit)
|
---|
4376 | {
|
---|
4377 | PPDMCRITSECT pCritSect = pUnit->pCritSect;
|
---|
4378 | if (pCritSect)
|
---|
4379 | {
|
---|
4380 | int rc = PDMCritSectEnter(pCritSect, VERR_IGNORED);
|
---|
4381 | AssertRC(rc);
|
---|
4382 | }
|
---|
4383 | }
|
---|
4384 |
|
---|
4385 |
|
---|
4386 | /**
|
---|
4387 | * Leaves the critical session (optionally) associated with the unit.
|
---|
4388 | *
|
---|
4389 | * @param pUnit The unit.
|
---|
4390 | */
|
---|
4391 | DECLINLINE(void) ssmR3UnitCritSectLeave(PSSMUNIT pUnit)
|
---|
4392 | {
|
---|
4393 | PPDMCRITSECT pCritSect = pUnit->pCritSect;
|
---|
4394 | if (pCritSect)
|
---|
4395 | {
|
---|
4396 | int rc = PDMCritSectLeave(pCritSect);
|
---|
4397 | AssertRC(rc);
|
---|
4398 | }
|
---|
4399 | }
|
---|
4400 |
|
---|
4401 |
|
---|
4402 | /**
|
---|
4403 | * Do the pfnSaveDone run.
|
---|
4404 | *
|
---|
4405 | * @returns VBox status code (pSSM->rc).
|
---|
4406 | * @param pVM Pointer to the VM.
|
---|
4407 | * @param pSSM The saved state handle.
|
---|
4408 | */
|
---|
4409 | static int ssmR3SaveDoDoneRun(PVM pVM, PSSMHANDLE pSSM)
|
---|
4410 | {
|
---|
4411 | VM_ASSERT_EMT0(pVM);
|
---|
4412 |
|
---|
4413 | /*
|
---|
4414 | * Do the done run.
|
---|
4415 | */
|
---|
4416 | pSSM->enmOp = SSMSTATE_SAVE_DONE;
|
---|
4417 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
4418 | {
|
---|
4419 | if ( pUnit->u.Common.pfnSaveDone
|
---|
4420 | && ( pUnit->fCalled
|
---|
4421 | || (!pUnit->u.Common.pfnSavePrep && !pUnit->u.Common.pfnSaveExec)))
|
---|
4422 | {
|
---|
4423 | int rcOld = pSSM->rc;
|
---|
4424 | int rc;
|
---|
4425 | ssmR3UnitCritSectEnter(pUnit);
|
---|
4426 | switch (pUnit->enmType)
|
---|
4427 | {
|
---|
4428 | case SSMUNITTYPE_DEV:
|
---|
4429 | rc = pUnit->u.Dev.pfnSaveDone(pUnit->u.Dev.pDevIns, pSSM);
|
---|
4430 | break;
|
---|
4431 | case SSMUNITTYPE_DRV:
|
---|
4432 | rc = pUnit->u.Drv.pfnSaveDone(pUnit->u.Drv.pDrvIns, pSSM);
|
---|
4433 | break;
|
---|
4434 | case SSMUNITTYPE_USB:
|
---|
4435 | rc = pUnit->u.Usb.pfnSaveDone(pUnit->u.Usb.pUsbIns, pSSM);
|
---|
4436 | break;
|
---|
4437 | case SSMUNITTYPE_INTERNAL:
|
---|
4438 | rc = pUnit->u.Internal.pfnSaveDone(pVM, pSSM);
|
---|
4439 | break;
|
---|
4440 | case SSMUNITTYPE_EXTERNAL:
|
---|
4441 | rc = pUnit->u.External.pfnSaveDone(pSSM, pUnit->u.External.pvUser);
|
---|
4442 | break;
|
---|
4443 | default:
|
---|
4444 | rc = VERR_SSM_IPE_1;
|
---|
4445 | break;
|
---|
4446 | }
|
---|
4447 | ssmR3UnitCritSectLeave(pUnit);
|
---|
4448 | if (RT_SUCCESS(rc) && pSSM->rc != rcOld)
|
---|
4449 | rc = pSSM->rc;
|
---|
4450 | if (RT_FAILURE(rc))
|
---|
4451 | {
|
---|
4452 | LogRel(("SSM: Done save failed with rc=%Rrc for data unit '%s.\n", rc, pUnit->szName));
|
---|
4453 | if (RT_SUCCESS_NP(pSSM->rc))
|
---|
4454 | pSSM->rc = rc;
|
---|
4455 | }
|
---|
4456 | }
|
---|
4457 | }
|
---|
4458 | return pSSM->rc;
|
---|
4459 | }
|
---|
4460 |
|
---|
4461 |
|
---|
4462 | /**
|
---|
4463 | * Worker for SSMR3LiveDone and SSMR3Save that closes the handle and deletes the
|
---|
4464 | * saved state file on failure.
|
---|
4465 | *
|
---|
4466 | * @returns VBox status code (pSSM->rc).
|
---|
4467 | * @param pVM Pointer to the VM.
|
---|
4468 | * @param pSSM The saved state handle.
|
---|
4469 | */
|
---|
4470 | static int ssmR3SaveDoClose(PVM pVM, PSSMHANDLE pSSM)
|
---|
4471 | {
|
---|
4472 | VM_ASSERT_EMT0(pVM);
|
---|
4473 | pVM->ssm.s.uPass = 0;
|
---|
4474 |
|
---|
4475 | /*
|
---|
4476 | * Make it non-cancellable, close the stream and delete the file on failure.
|
---|
4477 | */
|
---|
4478 | ssmR3SetCancellable(pVM, pSSM, false);
|
---|
4479 | int rc = ssmR3StrmClose(&pSSM->Strm, pSSM->rc == VERR_SSM_CANCELLED);
|
---|
4480 | if (RT_SUCCESS(rc))
|
---|
4481 | rc = pSSM->rc;
|
---|
4482 | if (RT_SUCCESS(rc))
|
---|
4483 | {
|
---|
4484 | Assert(pSSM->enmOp == SSMSTATE_SAVE_DONE);
|
---|
4485 | if (pSSM->pfnProgress)
|
---|
4486 | pSSM->pfnProgress(pVM->pUVM, 100, pSSM->pvUser);
|
---|
4487 | LogRel(("SSM: Successfully saved the VM state to '%s'\n",
|
---|
4488 | pSSM->pszFilename ? pSSM->pszFilename : "<remote-machine>"));
|
---|
4489 | }
|
---|
4490 | else
|
---|
4491 | {
|
---|
4492 | if (pSSM->pszFilename)
|
---|
4493 | {
|
---|
4494 | int rc2 = RTFileDelete(pSSM->pszFilename);
|
---|
4495 | AssertRC(rc2);
|
---|
4496 | if (RT_SUCCESS(rc2))
|
---|
4497 | LogRel(("SSM: Failed to save the VM state to '%s' (file deleted): %Rrc\n",
|
---|
4498 | pSSM->pszFilename, rc));
|
---|
4499 | else
|
---|
4500 | LogRel(("SSM: Failed to save the VM state to '%s' (file deletion failed, rc2=%Rrc): %Rrc\n",
|
---|
4501 | pSSM->pszFilename, rc2, rc));
|
---|
4502 | }
|
---|
4503 | else
|
---|
4504 | LogRel(("SSM: Failed to save the VM state.\n"));
|
---|
4505 |
|
---|
4506 | Assert(pSSM->enmOp <= SSMSTATE_SAVE_DONE);
|
---|
4507 | if (pSSM->enmOp != SSMSTATE_SAVE_DONE)
|
---|
4508 | ssmR3SaveDoDoneRun(pVM, pSSM);
|
---|
4509 | }
|
---|
4510 |
|
---|
4511 | /*
|
---|
4512 | * Trash the handle before freeing it.
|
---|
4513 | */
|
---|
4514 | ASMAtomicWriteU32(&pSSM->fCancelled, 0);
|
---|
4515 | pSSM->pVM = NULL;
|
---|
4516 | pSSM->enmAfter = SSMAFTER_INVALID;
|
---|
4517 | pSSM->enmOp = SSMSTATE_INVALID;
|
---|
4518 | RTMemFree(pSSM);
|
---|
4519 |
|
---|
4520 | return rc;
|
---|
4521 | }
|
---|
4522 |
|
---|
4523 |
|
---|
4524 | /**
|
---|
4525 | * Closes the SSM handle.
|
---|
4526 | *
|
---|
4527 | * This must always be called on a handled returned by SSMR3LiveSave.
|
---|
4528 | *
|
---|
4529 | * @returns VBox status.
|
---|
4530 | *
|
---|
4531 | * @param pSSM The SSM handle returned by SSMR3LiveSave.
|
---|
4532 | *
|
---|
4533 | * @thread EMT(0).
|
---|
4534 | */
|
---|
4535 | VMMR3_INT_DECL(int) SSMR3LiveDone(PSSMHANDLE pSSM)
|
---|
4536 | {
|
---|
4537 | LogFlow(("SSMR3LiveDone: pSSM=%p\n", pSSM));
|
---|
4538 |
|
---|
4539 | /*
|
---|
4540 | * Validate input.
|
---|
4541 | */
|
---|
4542 | AssertPtrReturn(pSSM, VERR_INVALID_POINTER);
|
---|
4543 | PVM pVM = pSSM->pVM;
|
---|
4544 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
4545 | VM_ASSERT_EMT0(pVM);
|
---|
4546 | AssertMsgReturn( pSSM->enmAfter == SSMAFTER_DESTROY
|
---|
4547 | || pSSM->enmAfter == SSMAFTER_CONTINUE
|
---|
4548 | || pSSM->enmAfter == SSMAFTER_TELEPORT,
|
---|
4549 | ("%d\n", pSSM->enmAfter),
|
---|
4550 | VERR_INVALID_PARAMETER);
|
---|
4551 | AssertMsgReturn( pSSM->enmOp >= SSMSTATE_LIVE_PREP
|
---|
4552 | && pSSM->enmOp <= SSMSTATE_SAVE_DONE,
|
---|
4553 | ("%d\n", pSSM->enmOp), VERR_INVALID_STATE);
|
---|
4554 |
|
---|
4555 | /*
|
---|
4556 | * Join paths with SSMR3Save again.
|
---|
4557 | */
|
---|
4558 | return ssmR3SaveDoClose(pVM, pSSM);
|
---|
4559 | }
|
---|
4560 |
|
---|
4561 |
|
---|
4562 | /**
|
---|
4563 | * Writes the directory.
|
---|
4564 | *
|
---|
4565 | * @returns VBox status code.
|
---|
4566 | * @param pVM Pointer to the VM.
|
---|
4567 | * @param pSSM The SSM handle.
|
---|
4568 | * @param pcEntries Where to return the number of directory entries.
|
---|
4569 | */
|
---|
4570 | static int ssmR3WriteDirectory(PVM pVM, PSSMHANDLE pSSM, uint32_t *pcEntries)
|
---|
4571 | {
|
---|
4572 | VM_ASSERT_EMT0(pVM);
|
---|
4573 |
|
---|
4574 | /*
|
---|
4575 | * Grab some temporary memory for the dictionary.
|
---|
4576 | */
|
---|
4577 | size_t cbDir = RT_OFFSETOF(SSMFILEDIR, aEntries[pVM->ssm.s.cUnits]);
|
---|
4578 | PSSMFILEDIR pDir = (PSSMFILEDIR)RTMemTmpAlloc(cbDir);
|
---|
4579 | if (!pDir)
|
---|
4580 | {
|
---|
4581 | LogRel(("ssmR3WriteDirectory: failed to allocate %zu bytes!\n", cbDir));
|
---|
4582 | return VERR_NO_TMP_MEMORY;
|
---|
4583 | }
|
---|
4584 |
|
---|
4585 | /*
|
---|
4586 | * Initialize it.
|
---|
4587 | */
|
---|
4588 | memcpy(pDir->szMagic, SSMFILEDIR_MAGIC, sizeof(pDir->szMagic));
|
---|
4589 | pDir->u32CRC = 0;
|
---|
4590 | pDir->cEntries = 0;
|
---|
4591 |
|
---|
4592 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
4593 | if (pUnit->offStream != RTFOFF_MIN)
|
---|
4594 | {
|
---|
4595 | PSSMFILEDIRENTRY pEntry = &pDir->aEntries[pDir->cEntries++];
|
---|
4596 | Assert(pDir->cEntries <= pVM->ssm.s.cUnits);
|
---|
4597 | Assert(pUnit->offStream >= (RTFOFF)sizeof(SSMFILEHDR));
|
---|
4598 | pEntry->off = pUnit->offStream;
|
---|
4599 | pEntry->u32Instance = pUnit->u32Instance;
|
---|
4600 | pEntry->u32NameCRC = RTCrc32(pUnit->szName, pUnit->cchName);
|
---|
4601 | }
|
---|
4602 |
|
---|
4603 | /*
|
---|
4604 | * Calculate the actual size and CRC-32, then write the directory
|
---|
4605 | * out to the stream.
|
---|
4606 | */
|
---|
4607 | *pcEntries = pDir->cEntries;
|
---|
4608 | cbDir = RT_OFFSETOF(SSMFILEDIR, aEntries[pDir->cEntries]);
|
---|
4609 | pDir->u32CRC = RTCrc32(pDir, cbDir);
|
---|
4610 | int rc = ssmR3StrmWrite(&pSSM->Strm, pDir, cbDir);
|
---|
4611 | RTMemTmpFree(pDir);
|
---|
4612 | return rc;
|
---|
4613 | }
|
---|
4614 |
|
---|
4615 |
|
---|
4616 | /**
|
---|
4617 | * Finalize the saved state stream, i.e. add the end unit, directory
|
---|
4618 | * and footer.
|
---|
4619 | *
|
---|
4620 | * @returns VBox status code (pSSM->rc).
|
---|
4621 | * @param pVM Pointer to the VM.
|
---|
4622 | * @param pSSM The saved state handle.
|
---|
4623 | */
|
---|
4624 | static int ssmR3SaveDoFinalization(PVM pVM, PSSMHANDLE pSSM)
|
---|
4625 | {
|
---|
4626 | VM_ASSERT_EMT0(pVM);
|
---|
4627 | Assert(RT_SUCCESS(pSSM->rc));
|
---|
4628 |
|
---|
4629 | /*
|
---|
4630 | * Write the end unit.
|
---|
4631 | */
|
---|
4632 | SSMFILEUNITHDRV2 UnitHdr;
|
---|
4633 | memcpy(&UnitHdr.szMagic[0], SSMFILEUNITHDR_END, sizeof(UnitHdr.szMagic));
|
---|
4634 | UnitHdr.offStream = ssmR3StrmTell(&pSSM->Strm);
|
---|
4635 | UnitHdr.u32CurStreamCRC = ssmR3StrmCurCRC(&pSSM->Strm);
|
---|
4636 | UnitHdr.u32CRC = 0;
|
---|
4637 | UnitHdr.u32Version = 0;
|
---|
4638 | UnitHdr.u32Instance = 0;
|
---|
4639 | UnitHdr.u32Pass = SSM_PASS_FINAL;
|
---|
4640 | UnitHdr.fFlags = 0;
|
---|
4641 | UnitHdr.cbName = 0;
|
---|
4642 | UnitHdr.u32CRC = RTCrc32(&UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[0]));
|
---|
4643 | Log(("SSM: Unit at %#9llx: END UNIT\n", UnitHdr.offStream));
|
---|
4644 | int rc = ssmR3StrmWrite(&pSSM->Strm, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[0]));
|
---|
4645 | if (RT_FAILURE(rc))
|
---|
4646 | {
|
---|
4647 | LogRel(("SSM: Failed writing the end unit: %Rrc\n", rc));
|
---|
4648 | return pSSM->rc = rc;
|
---|
4649 | }
|
---|
4650 |
|
---|
4651 | /*
|
---|
4652 | * Write the directory for the final units and then the footer.
|
---|
4653 | */
|
---|
4654 | SSMFILEFTR Footer;
|
---|
4655 | rc = ssmR3WriteDirectory(pVM, pSSM, &Footer.cDirEntries);
|
---|
4656 | if (RT_FAILURE(rc))
|
---|
4657 | {
|
---|
4658 | LogRel(("SSM: Failed writing the directory: %Rrc\n", rc));
|
---|
4659 | return pSSM->rc = rc;
|
---|
4660 | }
|
---|
4661 |
|
---|
4662 | memcpy(Footer.szMagic, SSMFILEFTR_MAGIC, sizeof(Footer.szMagic));
|
---|
4663 | Footer.offStream = ssmR3StrmTell(&pSSM->Strm);
|
---|
4664 | Footer.u32StreamCRC = ssmR3StrmFinalCRC(&pSSM->Strm);
|
---|
4665 | Footer.u32Reserved = 0;
|
---|
4666 | Footer.u32CRC = 0;
|
---|
4667 | Footer.u32CRC = RTCrc32(&Footer, sizeof(Footer));
|
---|
4668 | Log(("SSM: Footer at %#9llx: \n", Footer.offStream));
|
---|
4669 | rc = ssmR3StrmWrite(&pSSM->Strm, &Footer, sizeof(Footer));
|
---|
4670 | if (RT_SUCCESS(rc))
|
---|
4671 | rc = ssmR3StrmSetEnd(&pSSM->Strm);
|
---|
4672 | if (RT_FAILURE(rc))
|
---|
4673 | {
|
---|
4674 | LogRel(("SSM: Failed writing the footer: %Rrc\n", rc));
|
---|
4675 | return pSSM->rc = rc;
|
---|
4676 | }
|
---|
4677 |
|
---|
4678 | LogRel(("SSM: Footer at %#llx (%lld), %u directory entries.\n",
|
---|
4679 | Footer.offStream, Footer.offStream, Footer.cDirEntries));
|
---|
4680 | return VINF_SUCCESS;
|
---|
4681 | }
|
---|
4682 |
|
---|
4683 |
|
---|
4684 | /**
|
---|
4685 | * Works the progress calculation during the exec part of a live save.
|
---|
4686 | *
|
---|
4687 | * @param pSSM The SSM handle.
|
---|
4688 | * @param iUnit The current unit number.
|
---|
4689 | */
|
---|
4690 | static void ssmR3ProgressByUnit(PSSMHANDLE pSSM, uint32_t iUnit)
|
---|
4691 | {
|
---|
4692 | if (pSSM->fLiveSave)
|
---|
4693 | {
|
---|
4694 | unsigned uPctExec = iUnit * 100 / pSSM->pVM->ssm.s.cUnits;
|
---|
4695 | unsigned cPctExec = 100 - pSSM->uPercentDone - pSSM->uPercentPrepare - pSSM->uPercentLive;
|
---|
4696 | long double lrdPct = (long double)uPctExec * cPctExec / 100 + pSSM->uPercentPrepare + pSSM->uPercentLive;
|
---|
4697 | unsigned uPct = (unsigned)lrdPct;
|
---|
4698 | if (uPct != pSSM->uPercent)
|
---|
4699 | {
|
---|
4700 | ssmR3LiveControlEmit(pSSM, lrdPct, SSM_PASS_FINAL);
|
---|
4701 | pSSM->uPercent = uPct;
|
---|
4702 | pSSM->pfnProgress(pSSM->pVM->pUVM, uPct, pSSM->pvUser);
|
---|
4703 | }
|
---|
4704 | }
|
---|
4705 | }
|
---|
4706 |
|
---|
4707 |
|
---|
4708 | /**
|
---|
4709 | * Do the pfnSaveExec run.
|
---|
4710 | *
|
---|
4711 | * @returns VBox status code (pSSM->rc).
|
---|
4712 | * @param pVM Pointer to the VM.
|
---|
4713 | * @param pSSM The saved state handle.
|
---|
4714 | */
|
---|
4715 | static int ssmR3SaveDoExecRun(PVM pVM, PSSMHANDLE pSSM)
|
---|
4716 | {
|
---|
4717 | VM_ASSERT_EMT0(pVM);
|
---|
4718 | AssertRC(pSSM->rc);
|
---|
4719 | pSSM->rc = VINF_SUCCESS;
|
---|
4720 | pSSM->enmOp = SSMSTATE_SAVE_EXEC;
|
---|
4721 | unsigned iUnit = 0;
|
---|
4722 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext, iUnit++)
|
---|
4723 | {
|
---|
4724 | /*
|
---|
4725 | * Not all unit have a callback. Skip those which don't and
|
---|
4726 | * make sure to keep the progress indicator up to date.
|
---|
4727 | */
|
---|
4728 | ssmR3ProgressByUnit(pSSM, iUnit);
|
---|
4729 | pSSM->offEstUnitEnd += pUnit->cbGuess;
|
---|
4730 | if (!pUnit->u.Common.pfnSaveExec)
|
---|
4731 | {
|
---|
4732 | pUnit->fCalled = true;
|
---|
4733 | if (pUnit->cbGuess)
|
---|
4734 | ssmR3ProgressByByte(pSSM, pSSM->offEstUnitEnd - pSSM->offEst);
|
---|
4735 | continue;
|
---|
4736 | }
|
---|
4737 | pUnit->offStream = ssmR3StrmTell(&pSSM->Strm);
|
---|
4738 |
|
---|
4739 | /*
|
---|
4740 | * Check for cancellation.
|
---|
4741 | */
|
---|
4742 | if (RT_UNLIKELY(ASMAtomicUoReadU32(&(pSSM)->fCancelled) == SSMHANDLE_CANCELLED))
|
---|
4743 | {
|
---|
4744 | LogRel(("SSM: Cancelled!\n"));
|
---|
4745 | AssertRC(pSSM->rc);
|
---|
4746 | return pSSM->rc = VERR_SSM_CANCELLED;
|
---|
4747 | }
|
---|
4748 |
|
---|
4749 | /*
|
---|
4750 | * Write data unit header
|
---|
4751 | */
|
---|
4752 | SSMFILEUNITHDRV2 UnitHdr;
|
---|
4753 | memcpy(&UnitHdr.szMagic[0], SSMFILEUNITHDR_MAGIC, sizeof(UnitHdr.szMagic));
|
---|
4754 | UnitHdr.offStream = pUnit->offStream;
|
---|
4755 | UnitHdr.u32CurStreamCRC = ssmR3StrmCurCRC(&pSSM->Strm);
|
---|
4756 | UnitHdr.u32CRC = 0;
|
---|
4757 | UnitHdr.u32Version = pUnit->u32Version;
|
---|
4758 | UnitHdr.u32Instance = pUnit->u32Instance;
|
---|
4759 | UnitHdr.u32Pass = SSM_PASS_FINAL;
|
---|
4760 | UnitHdr.fFlags = 0;
|
---|
4761 | UnitHdr.cbName = (uint32_t)pUnit->cchName + 1;
|
---|
4762 | memcpy(&UnitHdr.szName[0], &pUnit->szName[0], UnitHdr.cbName);
|
---|
4763 | UnitHdr.u32CRC = RTCrc32(&UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]));
|
---|
4764 | Log(("SSM: Unit at %#9llx: '%s', instance %u, pass %#x, version %u\n",
|
---|
4765 | UnitHdr.offStream, UnitHdr.szName, UnitHdr.u32Instance, UnitHdr.u32Pass, UnitHdr.u32Version));
|
---|
4766 | int rc = ssmR3StrmWrite(&pSSM->Strm, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]));
|
---|
4767 | if (RT_FAILURE(rc))
|
---|
4768 | {
|
---|
4769 | LogRel(("SSM: Failed to write unit header. rc=%Rrc\n", rc));
|
---|
4770 | return pSSM->rc = rc;
|
---|
4771 | }
|
---|
4772 |
|
---|
4773 | /*
|
---|
4774 | * Call the execute handler.
|
---|
4775 | */
|
---|
4776 | ssmR3DataWriteBegin(pSSM);
|
---|
4777 | ssmR3UnitCritSectEnter(pUnit);
|
---|
4778 | switch (pUnit->enmType)
|
---|
4779 | {
|
---|
4780 | case SSMUNITTYPE_DEV:
|
---|
4781 | rc = pUnit->u.Dev.pfnSaveExec(pUnit->u.Dev.pDevIns, pSSM);
|
---|
4782 | break;
|
---|
4783 | case SSMUNITTYPE_DRV:
|
---|
4784 | rc = pUnit->u.Drv.pfnSaveExec(pUnit->u.Drv.pDrvIns, pSSM);
|
---|
4785 | break;
|
---|
4786 | case SSMUNITTYPE_USB:
|
---|
4787 | rc = pUnit->u.Usb.pfnSaveExec(pUnit->u.Usb.pUsbIns, pSSM);
|
---|
4788 | break;
|
---|
4789 | case SSMUNITTYPE_INTERNAL:
|
---|
4790 | rc = pUnit->u.Internal.pfnSaveExec(pVM, pSSM);
|
---|
4791 | break;
|
---|
4792 | case SSMUNITTYPE_EXTERNAL:
|
---|
4793 | pUnit->u.External.pfnSaveExec(pSSM, pUnit->u.External.pvUser);
|
---|
4794 | rc = pSSM->rc;
|
---|
4795 | break;
|
---|
4796 | default:
|
---|
4797 | rc = VERR_SSM_IPE_1;
|
---|
4798 | break;
|
---|
4799 | }
|
---|
4800 | ssmR3UnitCritSectLeave(pUnit);
|
---|
4801 | pUnit->fCalled = true;
|
---|
4802 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(pSSM->rc))
|
---|
4803 | pSSM->rc = rc;
|
---|
4804 | else
|
---|
4805 | rc = ssmR3DataFlushBuffer(pSSM); /* will return SSMHANDLE::rc if it is set */
|
---|
4806 | if (RT_FAILURE(rc))
|
---|
4807 | {
|
---|
4808 | LogRel(("SSM: Execute save failed with rc=%Rrc for data unit '%s'/#%u.\n", rc, pUnit->szName, pUnit->u32Instance));
|
---|
4809 | return rc;
|
---|
4810 | }
|
---|
4811 |
|
---|
4812 | /*
|
---|
4813 | * Write the termination record and flush the compression stream.
|
---|
4814 | */
|
---|
4815 | SSMRECTERM TermRec;
|
---|
4816 | TermRec.u8TypeAndFlags = SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_TERM;
|
---|
4817 | TermRec.cbRec = sizeof(TermRec) - 2;
|
---|
4818 | if (pSSM->Strm.fChecksummed)
|
---|
4819 | {
|
---|
4820 | TermRec.fFlags = SSMRECTERM_FLAGS_CRC32;
|
---|
4821 | TermRec.u32StreamCRC = RTCrc32Finish(RTCrc32Process(ssmR3StrmCurCRC(&pSSM->Strm), &TermRec, 2));
|
---|
4822 | }
|
---|
4823 | else
|
---|
4824 | {
|
---|
4825 | TermRec.fFlags = 0;
|
---|
4826 | TermRec.u32StreamCRC = 0;
|
---|
4827 | }
|
---|
4828 | TermRec.cbUnit = pSSM->offUnit + sizeof(TermRec);
|
---|
4829 | rc = ssmR3DataWriteRaw(pSSM, &TermRec, sizeof(TermRec));
|
---|
4830 | if (RT_SUCCESS(rc))
|
---|
4831 | rc = ssmR3DataWriteFinish(pSSM);
|
---|
4832 | if (RT_FAILURE(rc))
|
---|
4833 | {
|
---|
4834 | LogRel(("SSM: Failed terminating unit: %Rrc\n", rc));
|
---|
4835 | return pSSM->rc = rc;
|
---|
4836 | }
|
---|
4837 |
|
---|
4838 | /*
|
---|
4839 | * Advance the progress indicator to the end of the current unit.
|
---|
4840 | */
|
---|
4841 | ssmR3ProgressByByte(pSSM, pSSM->offEstUnitEnd - pSSM->offEst);
|
---|
4842 | } /* for each unit */
|
---|
4843 | ssmR3ProgressByUnit(pSSM, pVM->ssm.s.cUnits);
|
---|
4844 |
|
---|
4845 | /* (progress should be pending 99% now) */
|
---|
4846 | AssertMsg( pSSM->uPercent == 101 - pSSM->uPercentDone
|
---|
4847 | || pSSM->uPercent == 100 - pSSM->uPercentDone,
|
---|
4848 | ("%d\n", pSSM->uPercent));
|
---|
4849 | return VINF_SUCCESS;
|
---|
4850 | }
|
---|
4851 |
|
---|
4852 |
|
---|
4853 | /**
|
---|
4854 | * Do the pfnSavePrep run.
|
---|
4855 | *
|
---|
4856 | * @returns VBox status code (pSSM->rc).
|
---|
4857 | * @param pVM Pointer to the VM.
|
---|
4858 | * @param pSSM The saved state handle.
|
---|
4859 | */
|
---|
4860 | static int ssmR3SaveDoPrepRun(PVM pVM, PSSMHANDLE pSSM)
|
---|
4861 | {
|
---|
4862 | VM_ASSERT_EMT0(pVM);
|
---|
4863 | Assert(RT_SUCCESS(pSSM->rc));
|
---|
4864 | pSSM->enmOp = SSMSTATE_SAVE_PREP;
|
---|
4865 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
4866 | {
|
---|
4867 | if (pUnit->u.Common.pfnSavePrep)
|
---|
4868 | {
|
---|
4869 | int rc;
|
---|
4870 | ssmR3UnitCritSectEnter(pUnit);
|
---|
4871 | switch (pUnit->enmType)
|
---|
4872 | {
|
---|
4873 | case SSMUNITTYPE_DEV:
|
---|
4874 | rc = pUnit->u.Dev.pfnSavePrep(pUnit->u.Dev.pDevIns, pSSM);
|
---|
4875 | break;
|
---|
4876 | case SSMUNITTYPE_DRV:
|
---|
4877 | rc = pUnit->u.Drv.pfnSavePrep(pUnit->u.Drv.pDrvIns, pSSM);
|
---|
4878 | break;
|
---|
4879 | case SSMUNITTYPE_USB:
|
---|
4880 | rc = pUnit->u.Usb.pfnSavePrep(pUnit->u.Usb.pUsbIns, pSSM);
|
---|
4881 | break;
|
---|
4882 | case SSMUNITTYPE_INTERNAL:
|
---|
4883 | rc = pUnit->u.Internal.pfnSavePrep(pVM, pSSM);
|
---|
4884 | break;
|
---|
4885 | case SSMUNITTYPE_EXTERNAL:
|
---|
4886 | rc = pUnit->u.External.pfnSavePrep(pSSM, pUnit->u.External.pvUser);
|
---|
4887 | break;
|
---|
4888 | default:
|
---|
4889 | rc = VERR_SSM_IPE_1;
|
---|
4890 | break;
|
---|
4891 | }
|
---|
4892 | ssmR3UnitCritSectLeave(pUnit);
|
---|
4893 | pUnit->fCalled = true;
|
---|
4894 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(pSSM->rc))
|
---|
4895 | pSSM->rc = rc;
|
---|
4896 | else
|
---|
4897 | rc = pSSM->rc;
|
---|
4898 | if (RT_FAILURE(rc))
|
---|
4899 | {
|
---|
4900 | LogRel(("SSM: Prepare save failed with rc=%Rrc for data unit '%s.\n", rc, pUnit->szName));
|
---|
4901 | return rc;
|
---|
4902 | }
|
---|
4903 | }
|
---|
4904 |
|
---|
4905 | pSSM->cbEstTotal += pUnit->cbGuess;
|
---|
4906 | }
|
---|
4907 |
|
---|
4908 | /*
|
---|
4909 | * Work the progress indicator if we got one.
|
---|
4910 | */
|
---|
4911 | if (pSSM->pfnProgress)
|
---|
4912 | pSSM->pfnProgress(pVM->pUVM, pSSM->uPercentPrepare + pSSM->uPercentLive - 1, pSSM->pvUser);
|
---|
4913 | pSSM->uPercent = pSSM->uPercentPrepare + pSSM->uPercentLive;
|
---|
4914 |
|
---|
4915 | return VINF_SUCCESS;
|
---|
4916 | }
|
---|
4917 |
|
---|
4918 |
|
---|
4919 | /**
|
---|
4920 | * Common worker for SSMR3Save and SSMR3LiveSave.
|
---|
4921 | *
|
---|
4922 | * @returns VBox status code (no need to check pSSM->rc).
|
---|
4923 | * @param pVM Pointer to the VM.
|
---|
4924 | * @param pSSM The state handle.
|
---|
4925 | *
|
---|
4926 | * @thread EMT(0)
|
---|
4927 | */
|
---|
4928 | static int ssmR3SaveDoCommon(PVM pVM, PSSMHANDLE pSSM)
|
---|
4929 | {
|
---|
4930 | VM_ASSERT_EMT0(pVM);
|
---|
4931 |
|
---|
4932 | /*
|
---|
4933 | * Do the work.
|
---|
4934 | */
|
---|
4935 | int rc = ssmR3SaveDoPrepRun(pVM, pSSM);
|
---|
4936 | if (RT_SUCCESS(rc))
|
---|
4937 | {
|
---|
4938 | rc = ssmR3SaveDoExecRun(pVM, pSSM);
|
---|
4939 | if (RT_SUCCESS(rc))
|
---|
4940 | rc = ssmR3SaveDoFinalization(pVM, pSSM);
|
---|
4941 | }
|
---|
4942 | Assert(pSSM->rc == rc);
|
---|
4943 | int rc2 = ssmR3SaveDoDoneRun(pVM, pSSM);
|
---|
4944 | if (RT_SUCCESS(rc))
|
---|
4945 | rc = rc2;
|
---|
4946 |
|
---|
4947 | return rc;
|
---|
4948 | }
|
---|
4949 |
|
---|
4950 |
|
---|
4951 | /**
|
---|
4952 | * Saves the rest of the state on EMT0.
|
---|
4953 | *
|
---|
4954 | * @returns VBox status.
|
---|
4955 | *
|
---|
4956 | * @param pSSM The SSM handle returned by SSMR3LiveSave.
|
---|
4957 | *
|
---|
4958 | * @thread Non-EMT thread. Will involve the EMT at the end of the operation.
|
---|
4959 | */
|
---|
4960 | VMMR3_INT_DECL(int) SSMR3LiveDoStep2(PSSMHANDLE pSSM)
|
---|
4961 | {
|
---|
4962 | LogFlow(("SSMR3LiveDoStep2: pSSM=%p\n", pSSM));
|
---|
4963 |
|
---|
4964 | /*
|
---|
4965 | * Validate input.
|
---|
4966 | */
|
---|
4967 | AssertPtrReturn(pSSM, VERR_INVALID_POINTER);
|
---|
4968 | PVM pVM = pSSM->pVM;
|
---|
4969 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
4970 | VM_ASSERT_EMT0(pVM);
|
---|
4971 | AssertMsgReturn( pSSM->enmAfter == SSMAFTER_DESTROY
|
---|
4972 | || pSSM->enmAfter == SSMAFTER_CONTINUE
|
---|
4973 | || pSSM->enmAfter == SSMAFTER_TELEPORT,
|
---|
4974 | ("%d\n", pSSM->enmAfter),
|
---|
4975 | VERR_INVALID_PARAMETER);
|
---|
4976 | AssertMsgReturn(pSSM->enmOp == SSMSTATE_LIVE_STEP2, ("%d\n", pSSM->enmOp), VERR_INVALID_STATE);
|
---|
4977 | AssertRCReturn(pSSM->rc, pSSM->rc);
|
---|
4978 |
|
---|
4979 | /*
|
---|
4980 | * Join paths with VMMR3Save.
|
---|
4981 | */
|
---|
4982 | return ssmR3SaveDoCommon(pVM, pSSM);
|
---|
4983 | }
|
---|
4984 |
|
---|
4985 |
|
---|
4986 | /**
|
---|
4987 | * Writes the file header and clear the per-unit data.
|
---|
4988 | *
|
---|
4989 | * @returns VBox status code.
|
---|
4990 | * @param pVM Pointer to the VM.
|
---|
4991 | * @param pSSM The SSM handle.
|
---|
4992 | */
|
---|
4993 | static int ssmR3WriteHeaderAndClearPerUnitData(PVM pVM, PSSMHANDLE pSSM)
|
---|
4994 | {
|
---|
4995 | /*
|
---|
4996 | * Write the header.
|
---|
4997 | */
|
---|
4998 | SSMFILEHDR FileHdr;
|
---|
4999 | memcpy(&FileHdr.szMagic, SSMFILEHDR_MAGIC_V2_0, sizeof(FileHdr.szMagic));
|
---|
5000 | FileHdr.u16VerMajor = VBOX_VERSION_MAJOR;
|
---|
5001 | FileHdr.u16VerMinor = VBOX_VERSION_MINOR;
|
---|
5002 | FileHdr.u32VerBuild = VBOX_VERSION_BUILD;
|
---|
5003 | FileHdr.u32SvnRev = VMMGetSvnRev();
|
---|
5004 | FileHdr.cHostBits = HC_ARCH_BITS;
|
---|
5005 | FileHdr.cbGCPhys = sizeof(RTGCPHYS);
|
---|
5006 | FileHdr.cbGCPtr = sizeof(RTGCPTR);
|
---|
5007 | FileHdr.u8Reserved = 0;
|
---|
5008 | FileHdr.cUnits = pVM->ssm.s.cUnits;
|
---|
5009 | FileHdr.fFlags = SSMFILEHDR_FLAGS_STREAM_CRC32;
|
---|
5010 | if (pSSM->fLiveSave)
|
---|
5011 | FileHdr.fFlags |= SSMFILEHDR_FLAGS_STREAM_LIVE_SAVE;
|
---|
5012 | FileHdr.cbMaxDecompr = RT_SIZEOFMEMB(SSMHANDLE, u.Read.abDataBuffer);
|
---|
5013 | FileHdr.u32CRC = 0;
|
---|
5014 | FileHdr.u32CRC = RTCrc32(&FileHdr, sizeof(FileHdr));
|
---|
5015 | int rc = ssmR3StrmWrite(&pSSM->Strm, &FileHdr, sizeof(FileHdr));
|
---|
5016 | if (RT_FAILURE(rc))
|
---|
5017 | return rc;
|
---|
5018 |
|
---|
5019 | /*
|
---|
5020 | * Clear the per unit flags and offsets.
|
---|
5021 | */
|
---|
5022 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
5023 | {
|
---|
5024 | pUnit->fCalled = false;
|
---|
5025 | pUnit->offStream = RTFOFF_MIN;
|
---|
5026 | }
|
---|
5027 |
|
---|
5028 | return VINF_SUCCESS;
|
---|
5029 | }
|
---|
5030 |
|
---|
5031 |
|
---|
5032 | /**
|
---|
5033 | * Creates a new saved state file.
|
---|
5034 | *
|
---|
5035 | * @returns VBox status code.
|
---|
5036 | * @param pVM Pointer to the VM.
|
---|
5037 | * @param pszFilename The name of the file. NULL if pStreamOps is
|
---|
5038 | * used.
|
---|
5039 | * @param pStreamOps The stream methods. NULL if pszFilename is
|
---|
5040 | * used.
|
---|
5041 | * @param pvStreamOpsUser The user argument to the stream methods.
|
---|
5042 | * @param enmAfter What to do afterwards.
|
---|
5043 | * @param pfnProgress The progress callback.
|
---|
5044 | * @param pvProgressUser The progress callback user argument.
|
---|
5045 | * @param ppSSM Where to return the pointer to the saved state
|
---|
5046 | * handle upon successful return. Free it using
|
---|
5047 | * RTMemFree after closing the stream.
|
---|
5048 | */
|
---|
5049 | static int ssmR3SaveDoCreateFile(PVM pVM, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
|
---|
5050 | SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void *pvProgressUser, PSSMHANDLE *ppSSM)
|
---|
5051 | {
|
---|
5052 | PSSMHANDLE pSSM = (PSSMHANDLE)RTMemAllocZ(sizeof(*pSSM));
|
---|
5053 | if (!pSSM)
|
---|
5054 | return VERR_NO_MEMORY;
|
---|
5055 |
|
---|
5056 | pSSM->pVM = pVM;
|
---|
5057 | pSSM->enmOp = SSMSTATE_INVALID;
|
---|
5058 | pSSM->enmAfter = enmAfter;
|
---|
5059 | pSSM->fCancelled = SSMHANDLE_OK;
|
---|
5060 | pSSM->rc = VINF_SUCCESS;
|
---|
5061 | pSSM->cbUnitLeftV1 = 0;
|
---|
5062 | pSSM->offUnit = UINT64_MAX;
|
---|
5063 | pSSM->offUnitUser = UINT64_MAX;
|
---|
5064 | pSSM->fLiveSave = false;
|
---|
5065 | pSSM->pfnProgress = pfnProgress;
|
---|
5066 | pSSM->pvUser = pvProgressUser;
|
---|
5067 | pSSM->uPercent = 0;
|
---|
5068 | pSSM->offEstProgress = 0;
|
---|
5069 | pSSM->cbEstTotal = 0;
|
---|
5070 | pSSM->offEst = 0;
|
---|
5071 | pSSM->offEstUnitEnd = 0;
|
---|
5072 | pSSM->uPercentLive = 0;
|
---|
5073 | pSSM->uPercentPrepare = 0;
|
---|
5074 | pSSM->uPercentDone = 0;
|
---|
5075 | pSSM->uReportedLivePercent = 0;
|
---|
5076 | pSSM->pszFilename = pszFilename;
|
---|
5077 | pSSM->u.Write.offDataBuffer = 0;
|
---|
5078 | pSSM->u.Write.cMsMaxDowntime = UINT32_MAX;
|
---|
5079 |
|
---|
5080 | int rc;
|
---|
5081 | if (pStreamOps)
|
---|
5082 | rc = ssmR3StrmInit(&pSSM->Strm, pStreamOps, pvStreamOpsUser, true /*fWrite*/, true /*fChecksummed*/, 8 /*cBuffers*/);
|
---|
5083 | else
|
---|
5084 | rc = ssmR3StrmOpenFile(&pSSM->Strm, pszFilename, true /*fWrite*/, true /*fChecksummed*/, 8 /*cBuffers*/);
|
---|
5085 | if (RT_FAILURE(rc))
|
---|
5086 | {
|
---|
5087 | LogRel(("SSM: Failed to create save state file '%s', rc=%Rrc.\n", pszFilename, rc));
|
---|
5088 | RTMemFree(pSSM);
|
---|
5089 | return rc;
|
---|
5090 | }
|
---|
5091 |
|
---|
5092 | *ppSSM = pSSM;
|
---|
5093 | return VINF_SUCCESS;
|
---|
5094 | }
|
---|
5095 |
|
---|
5096 |
|
---|
5097 | /**
|
---|
5098 | * Start VM save operation.
|
---|
5099 | *
|
---|
5100 | * @returns VBox status.
|
---|
5101 | *
|
---|
5102 | * @param pVM Pointer to the VM.
|
---|
5103 | * @param pszFilename Name of the file to save the state in. NULL if pStreamOps is used.
|
---|
5104 | * @param pStreamOps The stream method table. NULL if pszFilename is
|
---|
5105 | * used.
|
---|
5106 | * @param pvStreamOpsUser The user argument to the stream methods.
|
---|
5107 | * @param enmAfter What is planned after a successful save operation.
|
---|
5108 | * @param pfnProgress Progress callback. Optional.
|
---|
5109 | * @param pvUser User argument for the progress callback.
|
---|
5110 | *
|
---|
5111 | * @thread EMT
|
---|
5112 | */
|
---|
5113 | VMMR3DECL(int) SSMR3Save(PVM pVM, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
|
---|
5114 | SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void *pvUser)
|
---|
5115 | {
|
---|
5116 | LogFlow(("SSMR3Save: pszFilename=%p:{%s} enmAfter=%d pfnProgress=%p pvUser=%p\n", pszFilename, pszFilename, enmAfter, pfnProgress, pvUser));
|
---|
5117 | VM_ASSERT_EMT0(pVM);
|
---|
5118 |
|
---|
5119 | /*
|
---|
5120 | * Validate input.
|
---|
5121 | */
|
---|
5122 | AssertMsgReturn( enmAfter == SSMAFTER_DESTROY
|
---|
5123 | || enmAfter == SSMAFTER_CONTINUE,
|
---|
5124 | ("%d\n", enmAfter),
|
---|
5125 | VERR_INVALID_PARAMETER);
|
---|
5126 |
|
---|
5127 | AssertReturn(!pszFilename != !pStreamOps, VERR_INVALID_PARAMETER);
|
---|
5128 | if (pStreamOps)
|
---|
5129 | {
|
---|
5130 | AssertReturn(pStreamOps->u32Version == SSMSTRMOPS_VERSION, VERR_INVALID_MAGIC);
|
---|
5131 | AssertReturn(pStreamOps->u32EndVersion == SSMSTRMOPS_VERSION, VERR_INVALID_MAGIC);
|
---|
5132 | AssertReturn(pStreamOps->pfnWrite, VERR_INVALID_PARAMETER);
|
---|
5133 | AssertReturn(pStreamOps->pfnRead, VERR_INVALID_PARAMETER);
|
---|
5134 | AssertReturn(pStreamOps->pfnSeek, VERR_INVALID_PARAMETER);
|
---|
5135 | AssertReturn(pStreamOps->pfnTell, VERR_INVALID_PARAMETER);
|
---|
5136 | AssertReturn(pStreamOps->pfnSize, VERR_INVALID_PARAMETER);
|
---|
5137 | AssertReturn(pStreamOps->pfnClose, VERR_INVALID_PARAMETER);
|
---|
5138 | }
|
---|
5139 |
|
---|
5140 | /*
|
---|
5141 | * Create the saved state file and handle.
|
---|
5142 | *
|
---|
5143 | * Note that there might be quite some work to do after executing the saving,
|
---|
5144 | * so we reserve 20% for the 'Done' period.
|
---|
5145 | */
|
---|
5146 | PSSMHANDLE pSSM;
|
---|
5147 | int rc = ssmR3SaveDoCreateFile(pVM, pszFilename, pStreamOps, pvStreamOpsUser,
|
---|
5148 | enmAfter, pfnProgress, pvUser, &pSSM);
|
---|
5149 | if (RT_FAILURE(rc))
|
---|
5150 | return rc;
|
---|
5151 | pSSM->uPercentLive = 0;
|
---|
5152 | pSSM->uPercentPrepare = 20;
|
---|
5153 | pSSM->uPercentDone = 2;
|
---|
5154 | pSSM->fLiveSave = false;
|
---|
5155 |
|
---|
5156 | /*
|
---|
5157 | * Write the saved state stream header and join paths with
|
---|
5158 | * the other save methods for the rest of the job.
|
---|
5159 | */
|
---|
5160 | Log(("SSM: Starting state save to file '%s'...\n", pszFilename));
|
---|
5161 | ssmR3StrmStartIoThread(&pSSM->Strm);
|
---|
5162 | rc = ssmR3WriteHeaderAndClearPerUnitData(pVM, pSSM);
|
---|
5163 | if (RT_SUCCESS(rc))
|
---|
5164 | {
|
---|
5165 | ssmR3SetCancellable(pVM, pSSM, true);
|
---|
5166 | ssmR3SaveDoCommon(pVM, pSSM);
|
---|
5167 | }
|
---|
5168 |
|
---|
5169 | return ssmR3SaveDoClose(pVM, pSSM);
|
---|
5170 | }
|
---|
5171 |
|
---|
5172 |
|
---|
5173 | /**
|
---|
5174 | * Used by PGM to report the completion percentage of the live stage during the
|
---|
5175 | * vote run.
|
---|
5176 | *
|
---|
5177 | * @param pSSM The saved state handle.
|
---|
5178 | * @param uPercent The completion percentage.
|
---|
5179 | */
|
---|
5180 | VMMR3DECL(void) SSMR3HandleReportLivePercent(PSSMHANDLE pSSM, unsigned uPercent)
|
---|
5181 | {
|
---|
5182 | AssertMsgReturnVoid(pSSM->enmOp == SSMSTATE_LIVE_VOTE, ("%d\n", pSSM->enmOp));
|
---|
5183 | AssertReturnVoid(uPercent <= 100);
|
---|
5184 | if (uPercent < pSSM->uReportedLivePercent)
|
---|
5185 | pSSM->uReportedLivePercent = uPercent;
|
---|
5186 | }
|
---|
5187 |
|
---|
5188 |
|
---|
5189 | /**
|
---|
5190 | * Calls pfnLiveVote for all units.
|
---|
5191 | *
|
---|
5192 | * @returns VBox status code (no need to check pSSM->rc).
|
---|
5193 | * @retval VINF_SUCCESS if we can pass on to step 2.
|
---|
5194 | * @retval VINF_SSM_VOTE_FOR_ANOTHER_PASS if we need another pass.
|
---|
5195 | *
|
---|
5196 | * @param pVM Pointer to the VM.
|
---|
5197 | * @param pSSM The saved state handle.
|
---|
5198 | * @param uPass The current pass.
|
---|
5199 | */
|
---|
5200 | static int ssmR3LiveDoVoteRun(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
|
---|
5201 | {
|
---|
5202 | int rcRet = VINF_SUCCESS;
|
---|
5203 | AssertRC(pSSM->rc);
|
---|
5204 | pSSM->rc = VINF_SUCCESS;
|
---|
5205 | pSSM->enmOp = SSMSTATE_LIVE_VOTE;
|
---|
5206 |
|
---|
5207 | unsigned uPrevPrecent = pSSM->uReportedLivePercent;
|
---|
5208 | pSSM->uReportedLivePercent = 101;
|
---|
5209 |
|
---|
5210 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
5211 | {
|
---|
5212 | if ( pUnit->u.Common.pfnLiveVote
|
---|
5213 | && !pUnit->fDoneLive)
|
---|
5214 | {
|
---|
5215 | int rc;
|
---|
5216 | ssmR3UnitCritSectEnter(pUnit);
|
---|
5217 | switch (pUnit->enmType)
|
---|
5218 | {
|
---|
5219 | case SSMUNITTYPE_DEV:
|
---|
5220 | rc = pUnit->u.Dev.pfnLiveVote(pUnit->u.Dev.pDevIns, pSSM, uPass);
|
---|
5221 | break;
|
---|
5222 | case SSMUNITTYPE_DRV:
|
---|
5223 | rc = pUnit->u.Drv.pfnLiveVote(pUnit->u.Drv.pDrvIns, pSSM, uPass);
|
---|
5224 | break;
|
---|
5225 | case SSMUNITTYPE_USB:
|
---|
5226 | rc = pUnit->u.Usb.pfnLiveVote(pUnit->u.Usb.pUsbIns, pSSM, uPass);
|
---|
5227 | break;
|
---|
5228 | case SSMUNITTYPE_INTERNAL:
|
---|
5229 | rc = pUnit->u.Internal.pfnLiveVote(pVM, pSSM, uPass);
|
---|
5230 | break;
|
---|
5231 | case SSMUNITTYPE_EXTERNAL:
|
---|
5232 | rc = pUnit->u.External.pfnLiveVote(pSSM, pUnit->u.External.pvUser, uPass);
|
---|
5233 | break;
|
---|
5234 | default:
|
---|
5235 | rc = VERR_SSM_IPE_1;
|
---|
5236 | break;
|
---|
5237 | }
|
---|
5238 | ssmR3UnitCritSectLeave(pUnit);
|
---|
5239 | pUnit->fCalled = true;
|
---|
5240 | Assert(pSSM->rc == VINF_SUCCESS);
|
---|
5241 | if (rc != VINF_SUCCESS)
|
---|
5242 | {
|
---|
5243 | if (rc == VINF_SSM_VOTE_FOR_ANOTHER_PASS)
|
---|
5244 | {
|
---|
5245 | Log(("ssmR3DoLiveVoteRun: '%s'/#%u -> VINF_SSM_VOTE_FOR_ANOTHER_PASS (pass=%u)\n", pUnit->szName, pUnit->u32Instance, uPass));
|
---|
5246 | rcRet = VINF_SSM_VOTE_FOR_ANOTHER_PASS;
|
---|
5247 | }
|
---|
5248 | else if (rc == VINF_SSM_VOTE_DONE_DONT_CALL_AGAIN)
|
---|
5249 | {
|
---|
5250 | pUnit->fDoneLive = true;
|
---|
5251 | Log(("ssmR3DoLiveVoteRun: '%s'/#%u -> VINF_SSM_VOTE_DONE_DONT_CALL_AGAIN (pass=%u)\n", pUnit->szName, pUnit->u32Instance, uPass));
|
---|
5252 | }
|
---|
5253 | else
|
---|
5254 | {
|
---|
5255 | /*
|
---|
5256 | * rc is usually VERR_SSM_VOTE_FOR_GIVING_UP here, but we allow
|
---|
5257 | * other status codes for better user feed back. However, no
|
---|
5258 | * other non-error status is allowed.
|
---|
5259 | */
|
---|
5260 | LogRel(("SSM: Error - '%s'/#%u voted %Rrc! (pass=%u)\n", pUnit->szName, pUnit->u32Instance, rc, uPass));
|
---|
5261 | AssertMsgReturn(RT_FAILURE(rc), ("%Rrc; '%s'\n", rc, pUnit->szName), pSSM->rc = VERR_IPE_UNEXPECTED_INFO_STATUS);
|
---|
5262 | return pSSM->rc = rc;
|
---|
5263 | }
|
---|
5264 | }
|
---|
5265 | }
|
---|
5266 | }
|
---|
5267 | if (rcRet == VINF_SUCCESS)
|
---|
5268 | {
|
---|
5269 | LogRel(("SSM: Step 1 completed after pass %u.\n", uPass));
|
---|
5270 | pSSM->uReportedLivePercent = 100;
|
---|
5271 | }
|
---|
5272 | else
|
---|
5273 | {
|
---|
5274 | /*
|
---|
5275 | * Work the progress callback.
|
---|
5276 | */
|
---|
5277 | if (pSSM->uReportedLivePercent > 100)
|
---|
5278 | pSSM->uReportedLivePercent = 0;
|
---|
5279 | if ( pSSM->uReportedLivePercent != uPrevPrecent
|
---|
5280 | && pSSM->pfnProgress
|
---|
5281 | && pSSM->uPercentLive)
|
---|
5282 | {
|
---|
5283 | long double lrdPct = (long double)pSSM->uReportedLivePercent * pSSM->uPercentLive / 100;
|
---|
5284 | unsigned uPct = (unsigned)lrdPct;
|
---|
5285 | if (uPct != pSSM->uPercent)
|
---|
5286 | {
|
---|
5287 | ssmR3LiveControlEmit(pSSM, lrdPct, uPass);
|
---|
5288 | pSSM->uPercent = uPct;
|
---|
5289 | pSSM->pfnProgress(pVM->pUVM, uPct, pSSM->pvUser);
|
---|
5290 | }
|
---|
5291 | }
|
---|
5292 | }
|
---|
5293 | return rcRet;
|
---|
5294 | }
|
---|
5295 |
|
---|
5296 |
|
---|
5297 | /**
|
---|
5298 | * Calls pfnLiveExec for all units.
|
---|
5299 | *
|
---|
5300 | * @returns VBox status code (no need to check pSSM->rc).
|
---|
5301 | *
|
---|
5302 | * @param pVM Pointer to the VM.
|
---|
5303 | * @param pSSM The saved state handle.
|
---|
5304 | * @param uPass The current pass.
|
---|
5305 | */
|
---|
5306 | static int ssmR3LiveDoExecRun(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
|
---|
5307 | {
|
---|
5308 | AssertRC(pSSM->rc);
|
---|
5309 | pSSM->rc = VINF_SUCCESS;
|
---|
5310 | pSSM->enmOp = SSMSTATE_LIVE_EXEC;
|
---|
5311 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
5312 | {
|
---|
5313 | /*
|
---|
5314 | * Skip units without a callback (this is most).
|
---|
5315 | */
|
---|
5316 | if ( !pUnit->u.Common.pfnLiveExec
|
---|
5317 | || pUnit->fDoneLive)
|
---|
5318 | continue;
|
---|
5319 | pUnit->offStream = ssmR3StrmTell(&pSSM->Strm);
|
---|
5320 |
|
---|
5321 | /*
|
---|
5322 | * Check for cancellation.
|
---|
5323 | */
|
---|
5324 | if (RT_UNLIKELY(ASMAtomicUoReadU32(&(pSSM)->fCancelled) == SSMHANDLE_CANCELLED))
|
---|
5325 | {
|
---|
5326 | LogRel(("SSM: Cancelled!\n"));
|
---|
5327 | AssertRC(pSSM->rc);
|
---|
5328 | return pSSM->rc = VERR_SSM_CANCELLED;
|
---|
5329 | }
|
---|
5330 |
|
---|
5331 | /*
|
---|
5332 | * Write data unit header.
|
---|
5333 | */
|
---|
5334 | SSMFILEUNITHDRV2 UnitHdr;
|
---|
5335 | memcpy(&UnitHdr.szMagic[0], SSMFILEUNITHDR_MAGIC, sizeof(UnitHdr.szMagic));
|
---|
5336 | UnitHdr.offStream = pUnit->offStream;
|
---|
5337 | UnitHdr.u32CurStreamCRC = ssmR3StrmCurCRC(&pSSM->Strm);
|
---|
5338 | UnitHdr.u32CRC = 0;
|
---|
5339 | UnitHdr.u32Version = pUnit->u32Version;
|
---|
5340 | UnitHdr.u32Instance = pUnit->u32Instance;
|
---|
5341 | UnitHdr.u32Pass = uPass;
|
---|
5342 | UnitHdr.fFlags = 0;
|
---|
5343 | UnitHdr.cbName = (uint32_t)pUnit->cchName + 1;
|
---|
5344 | memcpy(&UnitHdr.szName[0], &pUnit->szName[0], UnitHdr.cbName);
|
---|
5345 | UnitHdr.u32CRC = RTCrc32(&UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]));
|
---|
5346 | Log(("SSM: Unit at %#9llx: '%s', instance %u, pass %#x, version %u\n",
|
---|
5347 | UnitHdr.offStream, UnitHdr.szName, UnitHdr.u32Instance, UnitHdr.u32Pass, UnitHdr.u32Version));
|
---|
5348 | int rc = ssmR3StrmWrite(&pSSM->Strm, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]));
|
---|
5349 | if (RT_FAILURE(rc))
|
---|
5350 | {
|
---|
5351 | LogRel(("SSM: Failed to write unit header. rc=%Rrc\n", rc));
|
---|
5352 | return pSSM->rc = rc;
|
---|
5353 | }
|
---|
5354 |
|
---|
5355 | /*
|
---|
5356 | * Call the execute handler.
|
---|
5357 | */
|
---|
5358 | ssmR3DataWriteBegin(pSSM);
|
---|
5359 | ssmR3UnitCritSectEnter(pUnit);
|
---|
5360 | switch (pUnit->enmType)
|
---|
5361 | {
|
---|
5362 | case SSMUNITTYPE_DEV:
|
---|
5363 | rc = pUnit->u.Dev.pfnLiveExec(pUnit->u.Dev.pDevIns, pSSM, uPass);
|
---|
5364 | break;
|
---|
5365 | case SSMUNITTYPE_DRV:
|
---|
5366 | rc = pUnit->u.Drv.pfnLiveExec(pUnit->u.Drv.pDrvIns, pSSM, uPass);
|
---|
5367 | break;
|
---|
5368 | case SSMUNITTYPE_USB:
|
---|
5369 | rc = pUnit->u.Usb.pfnLiveExec(pUnit->u.Usb.pUsbIns, pSSM, uPass);
|
---|
5370 | break;
|
---|
5371 | case SSMUNITTYPE_INTERNAL:
|
---|
5372 | rc = pUnit->u.Internal.pfnLiveExec(pVM, pSSM, uPass);
|
---|
5373 | break;
|
---|
5374 | case SSMUNITTYPE_EXTERNAL:
|
---|
5375 | rc = pUnit->u.External.pfnLiveExec(pSSM, pUnit->u.External.pvUser, uPass);
|
---|
5376 | break;
|
---|
5377 | default:
|
---|
5378 | rc = VERR_SSM_IPE_1;
|
---|
5379 | break;
|
---|
5380 | }
|
---|
5381 | ssmR3UnitCritSectLeave(pUnit);
|
---|
5382 | pUnit->fCalled = true;
|
---|
5383 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(pSSM->rc))
|
---|
5384 | pSSM->rc = rc;
|
---|
5385 | else
|
---|
5386 | {
|
---|
5387 | if (rc == VINF_SSM_DONT_CALL_AGAIN)
|
---|
5388 | pUnit->fDoneLive = true;
|
---|
5389 | rc = ssmR3DataFlushBuffer(pSSM); /* will return SSMHANDLE::rc if it is set */
|
---|
5390 | }
|
---|
5391 | if (RT_FAILURE(rc))
|
---|
5392 | {
|
---|
5393 | LogRel(("SSM: Execute save failed with rc=%Rrc for data unit '%s'/#%u.\n", rc, pUnit->szName, pUnit->u32Instance));
|
---|
5394 | if (RT_SUCCESS(pSSM->rc))
|
---|
5395 | pSSM->rc = rc;
|
---|
5396 | return rc;
|
---|
5397 | }
|
---|
5398 |
|
---|
5399 | /*
|
---|
5400 | * Write the termination record and flush the compression stream.
|
---|
5401 | */
|
---|
5402 | SSMRECTERM TermRec;
|
---|
5403 | TermRec.u8TypeAndFlags = SSM_REC_FLAGS_FIXED | SSM_REC_FLAGS_IMPORTANT | SSM_REC_TYPE_TERM;
|
---|
5404 | TermRec.cbRec = sizeof(TermRec) - 2;
|
---|
5405 | if (pSSM->Strm.fChecksummed)
|
---|
5406 | {
|
---|
5407 | TermRec.fFlags = SSMRECTERM_FLAGS_CRC32;
|
---|
5408 | TermRec.u32StreamCRC = RTCrc32Finish(RTCrc32Process(ssmR3StrmCurCRC(&pSSM->Strm), &TermRec, 2));
|
---|
5409 | }
|
---|
5410 | else
|
---|
5411 | {
|
---|
5412 | TermRec.fFlags = 0;
|
---|
5413 | TermRec.u32StreamCRC = 0;
|
---|
5414 | }
|
---|
5415 | TermRec.cbUnit = pSSM->offUnit + sizeof(TermRec);
|
---|
5416 | rc = ssmR3DataWriteRaw(pSSM, &TermRec, sizeof(TermRec));
|
---|
5417 | if (RT_SUCCESS(rc))
|
---|
5418 | rc = ssmR3DataWriteFinish(pSSM);
|
---|
5419 | if (RT_FAILURE(rc))
|
---|
5420 | {
|
---|
5421 | LogRel(("SSM: Failed terminating unit: %Rrc (pass=%u)\n", rc, uPass));
|
---|
5422 | return pSSM->rc = rc;
|
---|
5423 | }
|
---|
5424 | } /* for each unit */
|
---|
5425 |
|
---|
5426 | return VINF_SUCCESS;
|
---|
5427 | }
|
---|
5428 |
|
---|
5429 |
|
---|
5430 | /**
|
---|
5431 | * Implements the live exec+vote loop.
|
---|
5432 | *
|
---|
5433 | * @returns VBox status code (no need to check pSSM->rc).
|
---|
5434 | * @param pVM Pointer to the VM.
|
---|
5435 | * @param pSSM The saved state handle.
|
---|
5436 | */
|
---|
5437 | static int ssmR3DoLiveExecVoteLoop(PVM pVM, PSSMHANDLE pSSM)
|
---|
5438 | {
|
---|
5439 | /*
|
---|
5440 | * Calc the max saved state size before we should give up because of insane
|
---|
5441 | * amounts of data.
|
---|
5442 | */
|
---|
5443 | #define SSM_MAX_GROWTH_FILE 10000
|
---|
5444 | #define SSM_MAX_GROWTH_REMOTE 100000
|
---|
5445 | uint64_t cbSum = 0;
|
---|
5446 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
5447 | cbSum += pUnit->cbGuess;
|
---|
5448 | uint64_t cbMax = cbSum * (pSSM->pszFilename ? SSM_MAX_GROWTH_FILE : SSM_MAX_GROWTH_REMOTE);
|
---|
5449 | AssertLogRelMsgReturn(cbMax > cbSum, ("cbMax=%#RX64, cbSum=%#RX64\n", cbMax, cbSum), pSSM->rc = VERR_OUT_OF_RANGE);
|
---|
5450 | if (cbMax < _1G)
|
---|
5451 | cbMax = _1G;
|
---|
5452 |
|
---|
5453 | /*
|
---|
5454 | * The pass loop.
|
---|
5455 | *
|
---|
5456 | * The number of iterations is restricted for two reasons, first
|
---|
5457 | * to make sure
|
---|
5458 | */
|
---|
5459 | #define SSM_MAX_PASSES _1M
|
---|
5460 | for (uint32_t uPass = 0; uPass < SSM_MAX_PASSES; uPass++)
|
---|
5461 | {
|
---|
5462 | pVM->ssm.s.uPass = uPass;
|
---|
5463 |
|
---|
5464 | /*
|
---|
5465 | * Save state and vote on whether we need more passes or not.
|
---|
5466 | */
|
---|
5467 | int rc = ssmR3LiveDoExecRun(pVM, pSSM, uPass);
|
---|
5468 | if (RT_FAILURE(rc))
|
---|
5469 | return rc;
|
---|
5470 | rc = ssmR3LiveDoVoteRun(pVM, pSSM, uPass);
|
---|
5471 | if (rc == VINF_SUCCESS)
|
---|
5472 | {
|
---|
5473 | pSSM->enmOp = SSMSTATE_LIVE_STEP2;
|
---|
5474 | return VINF_SUCCESS;
|
---|
5475 | }
|
---|
5476 | if (RT_FAILURE(rc))
|
---|
5477 | return rc;
|
---|
5478 |
|
---|
5479 | /*
|
---|
5480 | * Check that we're still within sane data amounts.
|
---|
5481 | */
|
---|
5482 | uint64_t cbSaved = ssmR3StrmTell(&pSSM->Strm);
|
---|
5483 | if (cbSaved > cbMax)
|
---|
5484 | {
|
---|
5485 | LogRel(("SSM: Giving up: Exceeded max state size. (cbSaved=%#RX64, cbMax=%#RX64)\n", cbSaved, cbMax));
|
---|
5486 | return pSSM->rc = VERR_SSM_STATE_GREW_TOO_BIG;
|
---|
5487 | }
|
---|
5488 |
|
---|
5489 | /*
|
---|
5490 | * Check that the stream is still OK.
|
---|
5491 | */
|
---|
5492 | rc = ssmR3StrmCheckAndFlush(&pSSM->Strm);
|
---|
5493 | if (RT_FAILURE(rc))
|
---|
5494 | return pSSM->rc = rc;
|
---|
5495 | }
|
---|
5496 |
|
---|
5497 | LogRel(("SSM: Giving up: Too many passes! (%u)\n", SSM_MAX_PASSES));
|
---|
5498 | return pSSM->rc = VERR_SSM_TOO_MANY_PASSES;
|
---|
5499 | }
|
---|
5500 |
|
---|
5501 |
|
---|
5502 | /**
|
---|
5503 | * Calls pfnLivePrep for all units.
|
---|
5504 | *
|
---|
5505 | * @returns VBox status code (no need to check pSSM->rc).
|
---|
5506 | * @param pVM Pointer to the VM.
|
---|
5507 | * @param pSSM The saved state handle.
|
---|
5508 | */
|
---|
5509 | static int ssmR3DoLivePrepRun(PVM pVM, PSSMHANDLE pSSM)
|
---|
5510 | {
|
---|
5511 | /*
|
---|
5512 | * Do the prepare run.
|
---|
5513 | */
|
---|
5514 | pSSM->rc = VINF_SUCCESS;
|
---|
5515 | pSSM->enmOp = SSMSTATE_SAVE_PREP;
|
---|
5516 | for (PSSMUNIT pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
5517 | {
|
---|
5518 | if (pUnit->u.Common.pfnLivePrep)
|
---|
5519 | {
|
---|
5520 | int rc;
|
---|
5521 | ssmR3UnitCritSectEnter(pUnit);
|
---|
5522 | switch (pUnit->enmType)
|
---|
5523 | {
|
---|
5524 | case SSMUNITTYPE_DEV:
|
---|
5525 | rc = pUnit->u.Dev.pfnLivePrep(pUnit->u.Dev.pDevIns, pSSM);
|
---|
5526 | break;
|
---|
5527 | case SSMUNITTYPE_DRV:
|
---|
5528 | rc = pUnit->u.Drv.pfnLivePrep(pUnit->u.Drv.pDrvIns, pSSM);
|
---|
5529 | break;
|
---|
5530 | case SSMUNITTYPE_USB:
|
---|
5531 | rc = pUnit->u.Usb.pfnLivePrep(pUnit->u.Usb.pUsbIns, pSSM);
|
---|
5532 | break;
|
---|
5533 | case SSMUNITTYPE_INTERNAL:
|
---|
5534 | rc = pUnit->u.Internal.pfnLivePrep(pVM, pSSM);
|
---|
5535 | break;
|
---|
5536 | case SSMUNITTYPE_EXTERNAL:
|
---|
5537 | rc = pUnit->u.External.pfnLivePrep(pSSM, pUnit->u.External.pvUser);
|
---|
5538 | break;
|
---|
5539 | default:
|
---|
5540 | rc = VERR_SSM_IPE_1;
|
---|
5541 | break;
|
---|
5542 | }
|
---|
5543 | ssmR3UnitCritSectLeave(pUnit);
|
---|
5544 | pUnit->fCalled = true;
|
---|
5545 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(pSSM->rc))
|
---|
5546 | pSSM->rc = rc;
|
---|
5547 | else
|
---|
5548 | rc = pSSM->rc;
|
---|
5549 | if (RT_FAILURE(rc))
|
---|
5550 | {
|
---|
5551 | LogRel(("SSM: Prepare save failed with rc=%Rrc for data unit '%s.\n", rc, pUnit->szName));
|
---|
5552 | return rc;
|
---|
5553 | }
|
---|
5554 | }
|
---|
5555 |
|
---|
5556 | pSSM->cbEstTotal += pUnit->cbGuess;
|
---|
5557 | }
|
---|
5558 |
|
---|
5559 | /*
|
---|
5560 | * Work the progress indicator if we got one.
|
---|
5561 | */
|
---|
5562 | if (pSSM->pfnProgress)
|
---|
5563 | pSSM->pfnProgress(pVM->pUVM, 2, pSSM->pvUser);
|
---|
5564 | pSSM->uPercent = 2;
|
---|
5565 |
|
---|
5566 | return VINF_SUCCESS;
|
---|
5567 | }
|
---|
5568 |
|
---|
5569 |
|
---|
5570 | /**
|
---|
5571 | * Continue a live state saving operation on the worker thread.
|
---|
5572 | *
|
---|
5573 | * @returns VBox status.
|
---|
5574 | *
|
---|
5575 | * @param pSSM The SSM handle returned by SSMR3LiveSave.
|
---|
5576 | *
|
---|
5577 | * @thread Non-EMT thread. Will involve the EMT at the end of the operation.
|
---|
5578 | */
|
---|
5579 | VMMR3_INT_DECL(int) SSMR3LiveDoStep1(PSSMHANDLE pSSM)
|
---|
5580 | {
|
---|
5581 | LogFlow(("SSMR3LiveDoStep1: pSSM=%p\n", pSSM));
|
---|
5582 |
|
---|
5583 | /*
|
---|
5584 | * Validate input.
|
---|
5585 | */
|
---|
5586 | AssertPtrReturn(pSSM, VERR_INVALID_POINTER);
|
---|
5587 | PVM pVM = pSSM->pVM;
|
---|
5588 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
5589 | VM_ASSERT_OTHER_THREAD(pVM);
|
---|
5590 | AssertMsgReturn( pSSM->enmAfter == SSMAFTER_DESTROY
|
---|
5591 | || pSSM->enmAfter == SSMAFTER_CONTINUE
|
---|
5592 | || pSSM->enmAfter == SSMAFTER_TELEPORT,
|
---|
5593 | ("%d\n", pSSM->enmAfter),
|
---|
5594 | VERR_INVALID_PARAMETER);
|
---|
5595 | AssertMsgReturn(pSSM->enmOp == SSMSTATE_LIVE_STEP1, ("%d\n", pSSM->enmOp), VERR_INVALID_STATE);
|
---|
5596 | AssertRCReturn(pSSM->rc, pSSM->rc);
|
---|
5597 |
|
---|
5598 | /*
|
---|
5599 | * Do the prep run, then the exec+vote cycle.
|
---|
5600 | */
|
---|
5601 | int rc = ssmR3DoLivePrepRun(pVM, pSSM);
|
---|
5602 | if (RT_SUCCESS(rc))
|
---|
5603 | rc = ssmR3DoLiveExecVoteLoop(pVM, pSSM);
|
---|
5604 | return rc;
|
---|
5605 | }
|
---|
5606 |
|
---|
5607 |
|
---|
5608 | /**
|
---|
5609 | * Start saving the live state.
|
---|
5610 | *
|
---|
5611 | * Call SSMR3LiveDoStep1, SSMR3LiveDoStep2 and finally SSMR3LiveDone on success.
|
---|
5612 | * SSMR3LiveDone should be called even if SSMR3LiveDoStep1 or SSMR3LiveDoStep2
|
---|
5613 | * fails.
|
---|
5614 | *
|
---|
5615 | * @returns VBox status.
|
---|
5616 | *
|
---|
5617 | * @param pVM Pointer to the VM.
|
---|
5618 | * @param cMsMaxDowntime The maximum downtime given as milliseconds.
|
---|
5619 | * @param pszFilename Name of the file to save the state in. This string
|
---|
5620 | * must remain valid until SSMR3LiveDone is called.
|
---|
5621 | * Must be NULL if pStreamOps is used.
|
---|
5622 | * @param pStreamOps The stream method table. NULL if pszFilename is
|
---|
5623 | * used.
|
---|
5624 | * @param pvStreamOpsUser The user argument to the stream methods.
|
---|
5625 | * @param enmAfter What is planned after a successful save operation.
|
---|
5626 | * @param pfnProgress Progress callback. Optional.
|
---|
5627 | * @param pvProgressUser User argument for the progress callback.
|
---|
5628 | *
|
---|
5629 | * @thread EMT0
|
---|
5630 | */
|
---|
5631 | VMMR3_INT_DECL(int) SSMR3LiveSave(PVM pVM, uint32_t cMsMaxDowntime,
|
---|
5632 | const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
|
---|
5633 | SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void *pvProgressUser,
|
---|
5634 | PSSMHANDLE *ppSSM)
|
---|
5635 | {
|
---|
5636 | LogFlow(("SSMR3LiveSave: cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p\n",
|
---|
5637 | cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser));
|
---|
5638 | VM_ASSERT_EMT0(pVM);
|
---|
5639 |
|
---|
5640 | /*
|
---|
5641 | * Validate input.
|
---|
5642 | */
|
---|
5643 | AssertMsgReturn( enmAfter == SSMAFTER_DESTROY
|
---|
5644 | || enmAfter == SSMAFTER_CONTINUE
|
---|
5645 | || enmAfter == SSMAFTER_TELEPORT,
|
---|
5646 | ("%d\n", enmAfter),
|
---|
5647 | VERR_INVALID_PARAMETER);
|
---|
5648 | AssertReturn(!pszFilename != !pStreamOps, VERR_INVALID_PARAMETER);
|
---|
5649 | if (pStreamOps)
|
---|
5650 | {
|
---|
5651 | AssertReturn(pStreamOps->u32Version == SSMSTRMOPS_VERSION, VERR_INVALID_MAGIC);
|
---|
5652 | AssertReturn(pStreamOps->u32EndVersion == SSMSTRMOPS_VERSION, VERR_INVALID_MAGIC);
|
---|
5653 | AssertReturn(pStreamOps->pfnWrite, VERR_INVALID_PARAMETER);
|
---|
5654 | AssertReturn(pStreamOps->pfnRead, VERR_INVALID_PARAMETER);
|
---|
5655 | AssertReturn(pStreamOps->pfnSeek, VERR_INVALID_PARAMETER);
|
---|
5656 | AssertReturn(pStreamOps->pfnTell, VERR_INVALID_PARAMETER);
|
---|
5657 | AssertReturn(pStreamOps->pfnSize, VERR_INVALID_PARAMETER);
|
---|
5658 | AssertReturn(pStreamOps->pfnClose, VERR_INVALID_PARAMETER);
|
---|
5659 | }
|
---|
5660 |
|
---|
5661 | /*
|
---|
5662 | * Create the saved state file and handle.
|
---|
5663 | *
|
---|
5664 | * Note that there might be quite some work to do after executing the saving,
|
---|
5665 | * so we reserve 20% for the 'Done' period.
|
---|
5666 | */
|
---|
5667 | PSSMHANDLE pSSM;
|
---|
5668 | int rc = ssmR3SaveDoCreateFile(pVM, pszFilename, pStreamOps, pvStreamOpsUser,
|
---|
5669 | enmAfter, pfnProgress, pvProgressUser, &pSSM);
|
---|
5670 | if (RT_FAILURE(rc))
|
---|
5671 | return rc;
|
---|
5672 | pSSM->uPercentLive = 93;
|
---|
5673 | pSSM->uPercentPrepare = 2;
|
---|
5674 | pSSM->uPercentDone = 2;
|
---|
5675 | pSSM->fLiveSave = true;
|
---|
5676 | pSSM->u.Write.cMsMaxDowntime = cMsMaxDowntime;
|
---|
5677 |
|
---|
5678 | /*
|
---|
5679 | * Write the saved state stream header and do the prep run for live saving.
|
---|
5680 | */
|
---|
5681 | Log(("SSM: Starting state save to file '%s'...\n", pszFilename));
|
---|
5682 | ssmR3StrmStartIoThread(&pSSM->Strm);
|
---|
5683 | rc = ssmR3WriteHeaderAndClearPerUnitData(pVM, pSSM);
|
---|
5684 | if (RT_SUCCESS(rc))
|
---|
5685 | {
|
---|
5686 | /*
|
---|
5687 | * Return and let the requestor thread do the pfnLiveExec/Vote part
|
---|
5688 | * via SSMR3SaveFinishLive
|
---|
5689 | */
|
---|
5690 | pSSM->enmOp = SSMSTATE_LIVE_STEP1;
|
---|
5691 | ssmR3SetCancellable(pVM, pSSM, true);
|
---|
5692 | *ppSSM = pSSM;
|
---|
5693 | return VINF_SUCCESS;
|
---|
5694 | }
|
---|
5695 | /* bail out. */
|
---|
5696 | int rc2 = ssmR3StrmClose(&pSSM->Strm, pSSM->rc == VERR_SSM_CANCELLED);
|
---|
5697 | RTMemFree(pSSM);
|
---|
5698 | rc2 = RTFileDelete(pszFilename);
|
---|
5699 | AssertRC(rc2);
|
---|
5700 | return rc;
|
---|
5701 | }
|
---|
5702 |
|
---|
5703 | #endif /* !SSM_STANDALONE */
|
---|
5704 |
|
---|
5705 |
|
---|
5706 | /* ... Loading and reading starts here ... */
|
---|
5707 | /* ... Loading and reading starts here ... */
|
---|
5708 | /* ... Loading and reading starts here ... */
|
---|
5709 | /* ... Loading and reading starts here ... */
|
---|
5710 | /* ... Loading and reading starts here ... */
|
---|
5711 | /* ... Loading and reading starts here ... */
|
---|
5712 | /* ... Loading and reading starts here ... */
|
---|
5713 | /* ... Loading and reading starts here ... */
|
---|
5714 | /* ... Loading and reading starts here ... */
|
---|
5715 | /* ... Loading and reading starts here ... */
|
---|
5716 | /* ... Loading and reading starts here ... */
|
---|
5717 | /* ... Loading and reading starts here ... */
|
---|
5718 | /* ... Loading and reading starts here ... */
|
---|
5719 | /* ... Loading and reading starts here ... */
|
---|
5720 | /* ... Loading and reading starts here ... */
|
---|
5721 | /* ... Loading and reading starts here ... */
|
---|
5722 | /* ... Loading and reading starts here ... */
|
---|
5723 |
|
---|
5724 |
|
---|
5725 | #ifndef SSM_STANDALONE
|
---|
5726 | /**
|
---|
5727 | * Closes the decompressor of a data unit.
|
---|
5728 | *
|
---|
5729 | * @returns pSSM->rc.
|
---|
5730 | * @param pSSM The saved state handle.
|
---|
5731 | */
|
---|
5732 | static int ssmR3DataReadFinishV1(PSSMHANDLE pSSM)
|
---|
5733 | {
|
---|
5734 | if (pSSM->u.Read.pZipDecompV1)
|
---|
5735 | {
|
---|
5736 | int rc = RTZipDecompDestroy(pSSM->u.Read.pZipDecompV1);
|
---|
5737 | AssertRC(rc);
|
---|
5738 | pSSM->u.Read.pZipDecompV1 = NULL;
|
---|
5739 | }
|
---|
5740 | return pSSM->rc;
|
---|
5741 | }
|
---|
5742 | #endif /* !SSM_STANDALONE */
|
---|
5743 |
|
---|
5744 |
|
---|
5745 | /**
|
---|
5746 | * Callback for reading compressed data into the input buffer of the
|
---|
5747 | * decompressor, for saved file format version 1.
|
---|
5748 | *
|
---|
5749 | * @returns VBox status code. Set pSSM->rc on error.
|
---|
5750 | * @param pvSSM The SSM handle.
|
---|
5751 | * @param pvBuf Where to store the compressed data.
|
---|
5752 | * @param cbBuf Size of the buffer.
|
---|
5753 | * @param pcbRead Number of bytes actually stored in the buffer.
|
---|
5754 | */
|
---|
5755 | static DECLCALLBACK(int) ssmR3ReadInV1(void *pvSSM, void *pvBuf, size_t cbBuf, size_t *pcbRead)
|
---|
5756 | {
|
---|
5757 | PSSMHANDLE pSSM = (PSSMHANDLE)pvSSM;
|
---|
5758 | size_t cbRead = cbBuf;
|
---|
5759 | if (pSSM->cbUnitLeftV1 < cbBuf)
|
---|
5760 | cbRead = (size_t)pSSM->cbUnitLeftV1;
|
---|
5761 | if (cbRead)
|
---|
5762 | {
|
---|
5763 | //Log2(("ssmR3ReadInV1: %#010llx cbBug=%#x cbRead=%#x\n", ssmR3StrmTell(&pSSM->Strm), cbBuf, cbRead));
|
---|
5764 | int rc = ssmR3StrmRead(&pSSM->Strm, pvBuf, cbRead);
|
---|
5765 | if (RT_SUCCESS(rc))
|
---|
5766 | {
|
---|
5767 | pSSM->cbUnitLeftV1 -= cbRead;
|
---|
5768 | if (pcbRead)
|
---|
5769 | *pcbRead = cbRead;
|
---|
5770 | ssmR3ProgressByByte(pSSM, cbRead);
|
---|
5771 | return VINF_SUCCESS;
|
---|
5772 | }
|
---|
5773 | return pSSM->rc = rc;
|
---|
5774 | }
|
---|
5775 |
|
---|
5776 | if (pSSM->enmAfter != SSMAFTER_DEBUG_IT)
|
---|
5777 | AssertMsgFailed(("SSM: attempted reading more than the unit!\n"));
|
---|
5778 | return pSSM->rc = VERR_SSM_LOADED_TOO_MUCH;
|
---|
5779 | }
|
---|
5780 |
|
---|
5781 |
|
---|
5782 | /**
|
---|
5783 | * Internal read worker for reading data from a version 1 unit.
|
---|
5784 | *
|
---|
5785 | * @returns VBox status code, pSSM->rc is set on error.
|
---|
5786 | *
|
---|
5787 | * @param pSSM The saved state handle.
|
---|
5788 | * @param pvBuf Where to store the read data.
|
---|
5789 | * @param cbBuf Number of bytes to read.
|
---|
5790 | */
|
---|
5791 | static int ssmR3DataReadV1(PSSMHANDLE pSSM, void *pvBuf, size_t cbBuf)
|
---|
5792 | {
|
---|
5793 | /*
|
---|
5794 | * Open the decompressor on the first read.
|
---|
5795 | */
|
---|
5796 | if (!pSSM->u.Read.pZipDecompV1)
|
---|
5797 | {
|
---|
5798 | pSSM->rc = RTZipDecompCreate(&pSSM->u.Read.pZipDecompV1, pSSM, ssmR3ReadInV1);
|
---|
5799 | if (RT_FAILURE(pSSM->rc))
|
---|
5800 | return pSSM->rc;
|
---|
5801 | }
|
---|
5802 |
|
---|
5803 | /*
|
---|
5804 | * Do the requested read.
|
---|
5805 | */
|
---|
5806 | int rc = pSSM->rc = RTZipDecompress(pSSM->u.Read.pZipDecompV1, pvBuf, cbBuf, NULL);
|
---|
5807 | if (RT_SUCCESS(rc))
|
---|
5808 | {
|
---|
5809 | Log2(("ssmR3DataRead: pvBuf=%p cbBuf=%#x offUnit=%#llx %.*Rhxs%s\n", pvBuf, cbBuf, pSSM->offUnit, RT_MIN(cbBuf, SSM_LOG_BYTES), pvBuf, cbBuf > SSM_LOG_BYTES ? "..." : ""));
|
---|
5810 | pSSM->offUnit += cbBuf;
|
---|
5811 | pSSM->offUnitUser += cbBuf;
|
---|
5812 | return VINF_SUCCESS;
|
---|
5813 | }
|
---|
5814 | AssertMsgFailed(("rc=%Rrc cbBuf=%#x\n", rc, cbBuf));
|
---|
5815 | return rc;
|
---|
5816 | }
|
---|
5817 |
|
---|
5818 |
|
---|
5819 | /**
|
---|
5820 | * Creates the decompressor for the data unit.
|
---|
5821 | *
|
---|
5822 | * pSSM->rc will be set on error.
|
---|
5823 | *
|
---|
5824 | * @param pSSM The saved state handle.
|
---|
5825 | */
|
---|
5826 | static void ssmR3DataReadBeginV2(PSSMHANDLE pSSM)
|
---|
5827 | {
|
---|
5828 | Assert(!pSSM->u.Read.cbDataBuffer || pSSM->u.Read.cbDataBuffer == pSSM->u.Read.offDataBuffer);
|
---|
5829 | Assert(!pSSM->u.Read.cbRecLeft);
|
---|
5830 |
|
---|
5831 | pSSM->offUnit = 0;
|
---|
5832 | pSSM->offUnitUser = 0;
|
---|
5833 | pSSM->u.Read.cbRecLeft = 0;
|
---|
5834 | pSSM->u.Read.cbDataBuffer = 0;
|
---|
5835 | pSSM->u.Read.offDataBuffer = 0;
|
---|
5836 | pSSM->u.Read.fEndOfData = false;
|
---|
5837 | pSSM->u.Read.u8TypeAndFlags = 0;
|
---|
5838 | }
|
---|
5839 |
|
---|
5840 |
|
---|
5841 | #ifndef SSM_STANDALONE
|
---|
5842 | /**
|
---|
5843 | * Checks for the termination record and closes the decompressor.
|
---|
5844 | *
|
---|
5845 | * pSSM->rc will be set on error.
|
---|
5846 | *
|
---|
5847 | * @returns pSSM->rc.
|
---|
5848 | * @param pSSM The saved state handle.
|
---|
5849 | */
|
---|
5850 | static int ssmR3DataReadFinishV2(PSSMHANDLE pSSM)
|
---|
5851 | {
|
---|
5852 | /*
|
---|
5853 | * If we haven't encountered the end of the record, it must be the next one.
|
---|
5854 | */
|
---|
5855 | int rc = pSSM->rc;
|
---|
5856 | if ( !pSSM->u.Read.fEndOfData
|
---|
5857 | && RT_SUCCESS(rc))
|
---|
5858 | {
|
---|
5859 | if ( pSSM->u.Read.cbDataBuffer != pSSM->u.Read.offDataBuffer
|
---|
5860 | && pSSM->u.Read.cbDataBuffer > 0)
|
---|
5861 | {
|
---|
5862 | LogRel(("SSM: At least %#x bytes left to read\n", pSSM->u.Read.cbDataBuffer - pSSM->u.Read.offDataBuffer));
|
---|
5863 | rc = VERR_SSM_LOADED_TOO_LITTLE;
|
---|
5864 | }
|
---|
5865 | else
|
---|
5866 | {
|
---|
5867 | rc = ssmR3DataReadRecHdrV2(pSSM);
|
---|
5868 | if ( RT_SUCCESS(rc)
|
---|
5869 | && !pSSM->u.Read.fEndOfData)
|
---|
5870 | {
|
---|
5871 | LogRel(("SSM: At least %#x bytes left to read\n", pSSM->u.Read.cbDataBuffer));
|
---|
5872 | rc = VERR_SSM_LOADED_TOO_LITTLE;
|
---|
5873 | AssertFailed();
|
---|
5874 | }
|
---|
5875 | }
|
---|
5876 | pSSM->rc = rc;
|
---|
5877 | }
|
---|
5878 | return rc;
|
---|
5879 | }
|
---|
5880 | #endif /* !SSM_STANDALONE */
|
---|
5881 |
|
---|
5882 |
|
---|
5883 | /**
|
---|
5884 | * Read raw record bytes, work the progress indicator and unit offset.
|
---|
5885 | *
|
---|
5886 | * @returns VBox status code. Does NOT set pSSM->rc.
|
---|
5887 | * @param pSSM The saved state handle.
|
---|
5888 | * @param pvBuf Where to put the bits
|
---|
5889 | * @param cbBuf How many bytes to read.
|
---|
5890 | */
|
---|
5891 | DECLINLINE(int) ssmR3DataReadV2Raw(PSSMHANDLE pSSM, void *pvBuf, size_t cbToRead)
|
---|
5892 | {
|
---|
5893 | int rc = ssmR3StrmRead(&pSSM->Strm, pvBuf, cbToRead);
|
---|
5894 | if (RT_SUCCESS(rc))
|
---|
5895 | {
|
---|
5896 | pSSM->offUnit += cbToRead;
|
---|
5897 | ssmR3ProgressByByte(pSSM, cbToRead);
|
---|
5898 | return VINF_SUCCESS;
|
---|
5899 | }
|
---|
5900 |
|
---|
5901 | if (rc == VERR_SSM_CANCELLED)
|
---|
5902 | return rc;
|
---|
5903 |
|
---|
5904 | if (pSSM->enmAfter != SSMAFTER_DEBUG_IT && rc == VERR_EOF)
|
---|
5905 | AssertMsgFailedReturn(("SSM: attempted reading more than the unit! rc=%Rrc\n", rc), VERR_SSM_LOADED_TOO_MUCH);
|
---|
5906 | return VERR_SSM_STREAM_ERROR;
|
---|
5907 | }
|
---|
5908 |
|
---|
5909 |
|
---|
5910 | /**
|
---|
5911 | * Reads and checks the LZF "header".
|
---|
5912 | *
|
---|
5913 | * @returns VBox status code. Sets pSSM->rc on error.
|
---|
5914 | * @param pSSM The saved state handle..
|
---|
5915 | * @param pcbDecompr Where to store the size of the decompressed data.
|
---|
5916 | */
|
---|
5917 | DECLINLINE(int) ssmR3DataReadV2RawLzfHdr(PSSMHANDLE pSSM, uint32_t *pcbDecompr)
|
---|
5918 | {
|
---|
5919 | *pcbDecompr = 0; /* shuts up gcc. */
|
---|
5920 | AssertLogRelMsgReturn( pSSM->u.Read.cbRecLeft > 1
|
---|
5921 | && pSSM->u.Read.cbRecLeft <= RT_SIZEOFMEMB(SSMHANDLE, u.Read.abComprBuffer) + 2,
|
---|
5922 | ("%#x\n", pSSM->u.Read.cbRecLeft),
|
---|
5923 | VERR_SSM_INTEGRITY_DECOMPRESSION);
|
---|
5924 |
|
---|
5925 | uint8_t cKB;
|
---|
5926 | int rc = ssmR3DataReadV2Raw(pSSM, &cKB, 1);
|
---|
5927 | if (RT_FAILURE(rc))
|
---|
5928 | return pSSM->rc = rc;
|
---|
5929 | pSSM->u.Read.cbRecLeft -= sizeof(cKB);
|
---|
5930 |
|
---|
5931 | uint32_t cbDecompr = (uint32_t)cKB * _1K;
|
---|
5932 | AssertLogRelMsgReturn( cbDecompr >= pSSM->u.Read.cbRecLeft
|
---|
5933 | && cbDecompr <= RT_SIZEOFMEMB(SSMHANDLE, u.Read.abDataBuffer),
|
---|
5934 | ("%#x\n", cbDecompr),
|
---|
5935 | VERR_SSM_INTEGRITY_DECOMPRESSION);
|
---|
5936 |
|
---|
5937 | *pcbDecompr = cbDecompr;
|
---|
5938 | return VINF_SUCCESS;
|
---|
5939 | }
|
---|
5940 |
|
---|
5941 |
|
---|
5942 | /**
|
---|
5943 | * Reads an LZF block from the stream and decompresses into the specified
|
---|
5944 | * buffer.
|
---|
5945 | *
|
---|
5946 | * @returns VBox status code. Sets pSSM->rc on error.
|
---|
5947 | * @param SSM The saved state handle.
|
---|
5948 | * @param pvDst Pointer to the output buffer.
|
---|
5949 | * @param cbDecompr The size of the decompressed data.
|
---|
5950 | */
|
---|
5951 | static int ssmR3DataReadV2RawLzf(PSSMHANDLE pSSM, void *pvDst, size_t cbDecompr)
|
---|
5952 | {
|
---|
5953 | int rc;
|
---|
5954 | uint32_t cbCompr = pSSM->u.Read.cbRecLeft;
|
---|
5955 | pSSM->u.Read.cbRecLeft = 0;
|
---|
5956 |
|
---|
5957 | /*
|
---|
5958 | * Try use the stream buffer directly to avoid copying things around.
|
---|
5959 | */
|
---|
5960 | uint8_t const *pb = ssmR3StrmReadDirect(&pSSM->Strm, cbCompr);
|
---|
5961 | if (pb)
|
---|
5962 | {
|
---|
5963 | pSSM->offUnit += cbCompr;
|
---|
5964 | ssmR3ProgressByByte(pSSM, cbCompr);
|
---|
5965 | }
|
---|
5966 | else
|
---|
5967 | {
|
---|
5968 | rc = ssmR3DataReadV2Raw(pSSM, &pSSM->u.Read.abComprBuffer[0], cbCompr);
|
---|
5969 | if (RT_FAILURE(rc))
|
---|
5970 | return pSSM->rc = rc;
|
---|
5971 | pb = &pSSM->u.Read.abComprBuffer[0];
|
---|
5972 | }
|
---|
5973 |
|
---|
5974 | /*
|
---|
5975 | * Decompress it.
|
---|
5976 | */
|
---|
5977 | size_t cbDstActual;
|
---|
5978 | rc = RTZipBlockDecompress(RTZIPTYPE_LZF, 0 /*fFlags*/,
|
---|
5979 | pb, cbCompr, NULL /*pcbSrcActual*/,
|
---|
5980 | pvDst, cbDecompr, &cbDstActual);
|
---|
5981 | if (RT_SUCCESS(rc))
|
---|
5982 | {
|
---|
5983 | AssertLogRelMsgReturn(cbDstActual == cbDecompr, ("%#x %#x\n", cbDstActual, cbDecompr), VERR_SSM_INTEGRITY_DECOMPRESSION);
|
---|
5984 | return VINF_SUCCESS;
|
---|
5985 | }
|
---|
5986 |
|
---|
5987 | AssertLogRelMsgFailed(("cbCompr=%#x cbDecompr=%#x rc=%Rrc\n", cbCompr, cbDecompr, rc));
|
---|
5988 | return pSSM->rc = VERR_SSM_INTEGRITY_DECOMPRESSION;
|
---|
5989 | }
|
---|
5990 |
|
---|
5991 |
|
---|
5992 | /**
|
---|
5993 | * Reads and checks the raw zero "header".
|
---|
5994 | *
|
---|
5995 | * @returns VBox status code. Sets pSSM->rc on error.
|
---|
5996 | * @param pSSM The saved state handle..
|
---|
5997 | * @param pcbDecompr Where to store the size of the zero data.
|
---|
5998 | */
|
---|
5999 | DECLINLINE(int) ssmR3DataReadV2RawZeroHdr(PSSMHANDLE pSSM, uint32_t *pcbZero)
|
---|
6000 | {
|
---|
6001 | *pcbZero = 0; /* shuts up gcc. */
|
---|
6002 | AssertLogRelMsgReturn(pSSM->u.Read.cbRecLeft == 1, ("%#x\n", pSSM->u.Read.cbRecLeft), VERR_SSM_INTEGRITY_DECOMPRESSION);
|
---|
6003 |
|
---|
6004 | uint8_t cKB;
|
---|
6005 | int rc = ssmR3DataReadV2Raw(pSSM, &cKB, 1);
|
---|
6006 | if (RT_FAILURE(rc))
|
---|
6007 | return pSSM->rc = rc;
|
---|
6008 | pSSM->u.Read.cbRecLeft = 0;
|
---|
6009 |
|
---|
6010 | uint32_t cbZero = (uint32_t)cKB * _1K;
|
---|
6011 | AssertLogRelMsgReturn(cbZero <= RT_SIZEOFMEMB(SSMHANDLE, u.Read.abDataBuffer),
|
---|
6012 | ("%#x\n", cbZero), VERR_SSM_INTEGRITY_DECOMPRESSION);
|
---|
6013 |
|
---|
6014 | *pcbZero = cbZero;
|
---|
6015 | return VINF_SUCCESS;
|
---|
6016 | }
|
---|
6017 |
|
---|
6018 |
|
---|
6019 | /**
|
---|
6020 | * Worker for reading the record header.
|
---|
6021 | *
|
---|
6022 | * It sets pSSM->u.Read.cbRecLeft, pSSM->u.Read.u8TypeAndFlags and
|
---|
6023 | * pSSM->u.Read.fEndOfData. When a termination record is encounter, it will be
|
---|
6024 | * read in full and validated, the fEndOfData indicator is set, and VINF_SUCCESS
|
---|
6025 | * is returned.
|
---|
6026 | *
|
---|
6027 | * @returns VBox status code. Does not set pSSM->rc.
|
---|
6028 | * @param pSSM The saved state handle.
|
---|
6029 | */
|
---|
6030 | static int ssmR3DataReadRecHdrV2(PSSMHANDLE pSSM)
|
---|
6031 | {
|
---|
6032 | AssertLogRelReturn(!pSSM->u.Read.fEndOfData, VERR_SSM_LOADED_TOO_MUCH);
|
---|
6033 |
|
---|
6034 | /*
|
---|
6035 | * Read the two mandatory bytes.
|
---|
6036 | */
|
---|
6037 | uint8_t abHdr[8];
|
---|
6038 | int rc = ssmR3DataReadV2Raw(pSSM, abHdr, 2);
|
---|
6039 | if (RT_FAILURE(rc))
|
---|
6040 | return rc;
|
---|
6041 |
|
---|
6042 | /*
|
---|
6043 | * Validate the first byte and check for the termination records.
|
---|
6044 | */
|
---|
6045 | pSSM->u.Read.u8TypeAndFlags = abHdr[0];
|
---|
6046 | AssertLogRelMsgReturn(SSM_REC_ARE_TYPE_AND_FLAGS_VALID(abHdr[0]), ("%#x %#x\n", abHdr[0], abHdr[1]), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6047 | if ((abHdr[0] & SSM_REC_TYPE_MASK) == SSM_REC_TYPE_TERM)
|
---|
6048 | {
|
---|
6049 | pSSM->u.Read.cbRecLeft = 0;
|
---|
6050 | pSSM->u.Read.fEndOfData = true;
|
---|
6051 | AssertLogRelMsgReturn(abHdr[1] == sizeof(SSMRECTERM) - 2, ("%#x\n", abHdr[1]), VERR_SSM_INTEGRITY_REC_TERM);
|
---|
6052 | AssertLogRelMsgReturn(abHdr[0] & SSM_REC_FLAGS_IMPORTANT, ("%#x\n", abHdr[0]), VERR_SSM_INTEGRITY_REC_TERM);
|
---|
6053 |
|
---|
6054 | /* get the rest */
|
---|
6055 | uint32_t u32StreamCRC = ssmR3StrmFinalCRC(&pSSM->Strm);
|
---|
6056 | SSMRECTERM TermRec;
|
---|
6057 | rc = ssmR3DataReadV2Raw(pSSM, (uint8_t *)&TermRec + 2, sizeof(SSMRECTERM) - 2);
|
---|
6058 | if (RT_FAILURE(rc))
|
---|
6059 | return rc;
|
---|
6060 |
|
---|
6061 | /* validate integrity */
|
---|
6062 | AssertLogRelMsgReturn(TermRec.cbUnit == pSSM->offUnit,
|
---|
6063 | ("cbUnit=%#llx offUnit=%#llx\n", TermRec.cbUnit, pSSM->offUnit),
|
---|
6064 | VERR_SSM_INTEGRITY_REC_TERM);
|
---|
6065 | AssertLogRelMsgReturn(!(TermRec.fFlags & ~SSMRECTERM_FLAGS_CRC32), ("%#x\n", TermRec.fFlags), VERR_SSM_INTEGRITY_REC_TERM);
|
---|
6066 | if (!(TermRec.fFlags & SSMRECTERM_FLAGS_CRC32))
|
---|
6067 | AssertLogRelMsgReturn(TermRec.u32StreamCRC == 0, ("%#x\n", TermRec.u32StreamCRC), VERR_SSM_INTEGRITY_REC_TERM);
|
---|
6068 | else if (pSSM->Strm.fChecksummed)
|
---|
6069 | AssertLogRelMsgReturn(TermRec.u32StreamCRC == u32StreamCRC, ("%#x, %#x\n", TermRec.u32StreamCRC, u32StreamCRC),
|
---|
6070 | VERR_SSM_INTEGRITY_REC_TERM_CRC);
|
---|
6071 |
|
---|
6072 | Log3(("ssmR3DataReadRecHdrV2: %08llx|%08llx: TERM\n", ssmR3StrmTell(&pSSM->Strm) - sizeof(SSMRECTERM), pSSM->offUnit));
|
---|
6073 | return VINF_SUCCESS;
|
---|
6074 | }
|
---|
6075 |
|
---|
6076 | /*
|
---|
6077 | * Figure the size. The 2nd byte is encoded in UTF-8 fashion, so this
|
---|
6078 | * is can be highly enjoyable.
|
---|
6079 | */
|
---|
6080 | uint32_t cbHdr = 2;
|
---|
6081 | uint32_t cb = abHdr[1];
|
---|
6082 | if (!(cb & 0x80))
|
---|
6083 | pSSM->u.Read.cbRecLeft = cb;
|
---|
6084 | else
|
---|
6085 | {
|
---|
6086 | /*
|
---|
6087 | * Need more data. Figure how much and read it.
|
---|
6088 | */
|
---|
6089 | if (!(cb & RT_BIT(5)))
|
---|
6090 | cb = 2;
|
---|
6091 | else if (!(cb & RT_BIT(4)))
|
---|
6092 | cb = 3;
|
---|
6093 | else if (!(cb & RT_BIT(3)))
|
---|
6094 | cb = 4;
|
---|
6095 | else if (!(cb & RT_BIT(2)))
|
---|
6096 | cb = 5;
|
---|
6097 | else if (!(cb & RT_BIT(1)))
|
---|
6098 | cb = 6;
|
---|
6099 | else
|
---|
6100 | AssertLogRelMsgFailedReturn(("Invalid record size byte: %#x\n", cb), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6101 | cbHdr = cb + 1;
|
---|
6102 |
|
---|
6103 | rc = ssmR3DataReadV2Raw(pSSM, &abHdr[2], cb - 1);
|
---|
6104 | if (RT_FAILURE(rc))
|
---|
6105 | return rc;
|
---|
6106 |
|
---|
6107 | /*
|
---|
6108 | * Validate what we've read.
|
---|
6109 | */
|
---|
6110 | switch (cb)
|
---|
6111 | {
|
---|
6112 | case 6:
|
---|
6113 | AssertLogRelMsgReturn((abHdr[6] & 0xc0) == 0x80, ("6/%u: %.*Rhxs\n", cb, cb + 1, &abHdr[0]), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6114 | case 5:
|
---|
6115 | AssertLogRelMsgReturn((abHdr[5] & 0xc0) == 0x80, ("5/%u: %.*Rhxs\n", cb, cb + 1, &abHdr[0]), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6116 | case 4:
|
---|
6117 | AssertLogRelMsgReturn((abHdr[4] & 0xc0) == 0x80, ("4/%u: %.*Rhxs\n", cb, cb + 1, &abHdr[0]), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6118 | case 3:
|
---|
6119 | AssertLogRelMsgReturn((abHdr[3] & 0xc0) == 0x80, ("3/%u: %.*Rhxs\n", cb, cb + 1, &abHdr[0]), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6120 | case 2:
|
---|
6121 | AssertLogRelMsgReturn((abHdr[2] & 0xc0) == 0x80, ("2/%u: %.*Rhxs\n", cb, cb + 1, &abHdr[0]), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6122 | break;
|
---|
6123 | default:
|
---|
6124 | return VERR_IPE_NOT_REACHED_DEFAULT_CASE;
|
---|
6125 | }
|
---|
6126 |
|
---|
6127 | /*
|
---|
6128 | * Decode it and validate the range.
|
---|
6129 | */
|
---|
6130 | switch (cb)
|
---|
6131 | {
|
---|
6132 | case 6:
|
---|
6133 | cb = (abHdr[6] & 0x3f)
|
---|
6134 | | ((uint32_t)(abHdr[5] & 0x3f) << 6)
|
---|
6135 | | ((uint32_t)(abHdr[4] & 0x3f) << 12)
|
---|
6136 | | ((uint32_t)(abHdr[3] & 0x3f) << 18)
|
---|
6137 | | ((uint32_t)(abHdr[2] & 0x3f) << 24)
|
---|
6138 | | ((uint32_t)(abHdr[1] & 0x01) << 30);
|
---|
6139 | AssertLogRelMsgReturn(cb >= 0x04000000 && cb <= 0x7fffffff, ("cb=%#x\n", cb), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6140 | break;
|
---|
6141 | case 5:
|
---|
6142 | cb = (abHdr[5] & 0x3f)
|
---|
6143 | | ((uint32_t)(abHdr[4] & 0x3f) << 6)
|
---|
6144 | | ((uint32_t)(abHdr[3] & 0x3f) << 12)
|
---|
6145 | | ((uint32_t)(abHdr[2] & 0x3f) << 18)
|
---|
6146 | | ((uint32_t)(abHdr[1] & 0x03) << 24);
|
---|
6147 | AssertLogRelMsgReturn(cb >= 0x00200000 && cb <= 0x03ffffff, ("cb=%#x\n", cb), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6148 | break;
|
---|
6149 | case 4:
|
---|
6150 | cb = (abHdr[4] & 0x3f)
|
---|
6151 | | ((uint32_t)(abHdr[3] & 0x3f) << 6)
|
---|
6152 | | ((uint32_t)(abHdr[2] & 0x3f) << 12)
|
---|
6153 | | ((uint32_t)(abHdr[1] & 0x07) << 18);
|
---|
6154 | AssertLogRelMsgReturn(cb >= 0x00010000 && cb <= 0x001fffff, ("cb=%#x\n", cb), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6155 | break;
|
---|
6156 | case 3:
|
---|
6157 | cb = (abHdr[3] & 0x3f)
|
---|
6158 | | ((uint32_t)(abHdr[2] & 0x3f) << 6)
|
---|
6159 | | ((uint32_t)(abHdr[1] & 0x0f) << 12);
|
---|
6160 | #if 0 /* disabled to optimize buffering */
|
---|
6161 | AssertLogRelMsgReturn(cb >= 0x00000800 && cb <= 0x0000ffff, ("cb=%#x\n", cb), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6162 | #endif
|
---|
6163 | break;
|
---|
6164 | case 2:
|
---|
6165 | cb = (abHdr[2] & 0x3f)
|
---|
6166 | | ((uint32_t)(abHdr[1] & 0x1f) << 6);
|
---|
6167 | #if 0 /* disabled to optimize buffering */
|
---|
6168 | AssertLogRelMsgReturn(cb >= 0x00000080 && cb <= 0x000007ff, ("cb=%#x\n", cb), VERR_SSM_INTEGRITY_REC_HDR);
|
---|
6169 | #endif
|
---|
6170 | break;
|
---|
6171 | default:
|
---|
6172 | return VERR_IPE_NOT_REACHED_DEFAULT_CASE;
|
---|
6173 | }
|
---|
6174 |
|
---|
6175 | pSSM->u.Read.cbRecLeft = cb;
|
---|
6176 | }
|
---|
6177 |
|
---|
6178 | Log3(("ssmR3DataReadRecHdrV2: %08llx|%08llx/%08x: Type=%02x fImportant=%RTbool cbHdr=%u\n",
|
---|
6179 | ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pSSM->u.Read.cbRecLeft,
|
---|
6180 | pSSM->u.Read.u8TypeAndFlags & SSM_REC_TYPE_MASK,
|
---|
6181 | !!(pSSM->u.Read.u8TypeAndFlags & SSM_REC_FLAGS_IMPORTANT),
|
---|
6182 | cbHdr
|
---|
6183 | )); NOREF(cbHdr);
|
---|
6184 | return VINF_SUCCESS;
|
---|
6185 | }
|
---|
6186 |
|
---|
6187 |
|
---|
6188 | /**
|
---|
6189 | * Buffer miss, do an unbuffered read.
|
---|
6190 | *
|
---|
6191 | * @param pSSM The saved state handle.
|
---|
6192 | * @param pvBuf Where to store the read data.
|
---|
6193 | * @param cbBuf Number of bytes to read.
|
---|
6194 | */
|
---|
6195 | static int ssmR3DataReadUnbufferedV2(PSSMHANDLE pSSM, void *pvBuf, size_t cbBuf)
|
---|
6196 | {
|
---|
6197 | void const *pvBufOrg = pvBuf; NOREF(pvBufOrg);
|
---|
6198 | size_t const cbBufOrg = cbBuf; NOREF(cbBufOrg);
|
---|
6199 |
|
---|
6200 | /*
|
---|
6201 | * Copy out what we've got in the buffer.
|
---|
6202 | */
|
---|
6203 | uint32_t off = pSSM->u.Read.offDataBuffer;
|
---|
6204 | int32_t cbInBuffer = pSSM->u.Read.cbDataBuffer - off;
|
---|
6205 | Log4(("ssmR3DataReadUnbufferedV2: %08llx|%08llx/%08x/%08x: cbBuf=%#x\n", ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pSSM->u.Read.cbRecLeft, cbInBuffer, cbBufOrg));
|
---|
6206 | if (cbInBuffer > 0)
|
---|
6207 | {
|
---|
6208 | uint32_t const cbToCopy = (uint32_t)cbInBuffer;
|
---|
6209 | Assert(cbBuf > cbToCopy);
|
---|
6210 | memcpy(pvBuf, &pSSM->u.Read.abDataBuffer[off], cbToCopy);
|
---|
6211 | pvBuf = (uint8_t *)pvBuf + cbToCopy;
|
---|
6212 | cbBuf -= cbToCopy;
|
---|
6213 | pSSM->u.Read.cbDataBuffer = 0;
|
---|
6214 | pSSM->u.Read.offDataBuffer = 0;
|
---|
6215 | }
|
---|
6216 |
|
---|
6217 | /*
|
---|
6218 | * Read data.
|
---|
6219 | */
|
---|
6220 | do
|
---|
6221 | {
|
---|
6222 | /*
|
---|
6223 | * Read the next record header if no more data.
|
---|
6224 | */
|
---|
6225 | if (!pSSM->u.Read.cbRecLeft)
|
---|
6226 | {
|
---|
6227 | int rc = ssmR3DataReadRecHdrV2(pSSM);
|
---|
6228 | if (RT_FAILURE(rc))
|
---|
6229 | return pSSM->rc = rc;
|
---|
6230 | }
|
---|
6231 | AssertLogRelMsgReturn(!pSSM->u.Read.fEndOfData, ("cbBuf=%zu", cbBuf), pSSM->rc = VERR_SSM_LOADED_TOO_MUCH);
|
---|
6232 |
|
---|
6233 | /*
|
---|
6234 | * Read data from the current record.
|
---|
6235 | */
|
---|
6236 | uint32_t cbToRead;
|
---|
6237 | switch (pSSM->u.Read.u8TypeAndFlags & SSM_REC_TYPE_MASK)
|
---|
6238 | {
|
---|
6239 | case SSM_REC_TYPE_RAW:
|
---|
6240 | {
|
---|
6241 | cbToRead = (uint32_t)RT_MIN(cbBuf, pSSM->u.Read.cbRecLeft);
|
---|
6242 | int rc = ssmR3DataReadV2Raw(pSSM, pvBuf, cbToRead);
|
---|
6243 | if (RT_FAILURE(rc))
|
---|
6244 | return pSSM->rc = rc;
|
---|
6245 | pSSM->u.Read.cbRecLeft -= cbToRead;
|
---|
6246 | break;
|
---|
6247 | }
|
---|
6248 |
|
---|
6249 | case SSM_REC_TYPE_RAW_LZF:
|
---|
6250 | {
|
---|
6251 | int rc = ssmR3DataReadV2RawLzfHdr(pSSM, &cbToRead);
|
---|
6252 | if (RT_FAILURE(rc))
|
---|
6253 | return rc;
|
---|
6254 | if (cbToRead <= cbBuf)
|
---|
6255 | {
|
---|
6256 | rc = ssmR3DataReadV2RawLzf(pSSM, pvBuf, cbToRead);
|
---|
6257 | if (RT_FAILURE(rc))
|
---|
6258 | return rc;
|
---|
6259 | }
|
---|
6260 | else
|
---|
6261 | {
|
---|
6262 | /* The output buffer is too small, use the data buffer. */
|
---|
6263 | rc = ssmR3DataReadV2RawLzf(pSSM, &pSSM->u.Read.abDataBuffer[0], cbToRead);
|
---|
6264 | if (RT_FAILURE(rc))
|
---|
6265 | return rc;
|
---|
6266 | pSSM->u.Read.cbDataBuffer = cbToRead;
|
---|
6267 | cbToRead = (uint32_t)cbBuf;
|
---|
6268 | pSSM->u.Read.offDataBuffer = cbToRead;
|
---|
6269 | memcpy(pvBuf, &pSSM->u.Read.abDataBuffer[0], cbToRead);
|
---|
6270 | }
|
---|
6271 | break;
|
---|
6272 | }
|
---|
6273 |
|
---|
6274 | case SSM_REC_TYPE_RAW_ZERO:
|
---|
6275 | {
|
---|
6276 | int rc = ssmR3DataReadV2RawZeroHdr(pSSM, &cbToRead);
|
---|
6277 | if (RT_FAILURE(rc))
|
---|
6278 | return rc;
|
---|
6279 | if (cbToRead > cbBuf)
|
---|
6280 | {
|
---|
6281 | /* Spill the remainder into the data buffer. */
|
---|
6282 | memset(&pSSM->u.Read.abDataBuffer[0], 0, cbToRead - cbBuf);
|
---|
6283 | pSSM->u.Read.cbDataBuffer = cbToRead - (uint32_t)cbBuf;
|
---|
6284 | pSSM->u.Read.offDataBuffer = 0;
|
---|
6285 | cbToRead = (uint32_t)cbBuf;
|
---|
6286 | }
|
---|
6287 | memset(pvBuf, 0, cbToRead);
|
---|
6288 | break;
|
---|
6289 | }
|
---|
6290 |
|
---|
6291 | default:
|
---|
6292 | AssertMsgFailedReturn(("%x\n", pSSM->u.Read.u8TypeAndFlags), VERR_SSM_BAD_REC_TYPE);
|
---|
6293 | }
|
---|
6294 |
|
---|
6295 | pSSM->offUnitUser += cbToRead;
|
---|
6296 | cbBuf -= cbToRead;
|
---|
6297 | pvBuf = (uint8_t *)pvBuf + cbToRead;
|
---|
6298 | } while (cbBuf > 0);
|
---|
6299 |
|
---|
6300 | Log4(("ssmR3DataReadUnBufferedV2: %08llx|%08llx/%08x/%08x: cbBuf=%#x %.*Rhxs%s\n",
|
---|
6301 | ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pSSM->u.Read.cbRecLeft, 0, cbBufOrg, RT_MIN(SSM_LOG_BYTES, cbBufOrg), pvBufOrg, cbBufOrg > SSM_LOG_BYTES ? "..." : ""));
|
---|
6302 | return VINF_SUCCESS;
|
---|
6303 | }
|
---|
6304 |
|
---|
6305 |
|
---|
6306 | /**
|
---|
6307 | * Buffer miss, do a buffered read.
|
---|
6308 | *
|
---|
6309 | * @returns VBox status code. Sets pSSM->rc on error.
|
---|
6310 | *
|
---|
6311 | * @param pSSM The saved state handle.
|
---|
6312 | * @param pvBuf Where to store the read data.
|
---|
6313 | * @param cbBuf Number of bytes to read.
|
---|
6314 | */
|
---|
6315 | static int ssmR3DataReadBufferedV2(PSSMHANDLE pSSM, void *pvBuf, size_t cbBuf)
|
---|
6316 | {
|
---|
6317 | void const *pvBufOrg = pvBuf; NOREF(pvBufOrg);
|
---|
6318 | size_t const cbBufOrg = cbBuf; NOREF(cbBufOrg);
|
---|
6319 |
|
---|
6320 | /*
|
---|
6321 | * Copy out what we've got in the buffer.
|
---|
6322 | */
|
---|
6323 | uint32_t off = pSSM->u.Read.offDataBuffer;
|
---|
6324 | int32_t cbInBuffer = pSSM->u.Read.cbDataBuffer - off;
|
---|
6325 | Log4(("ssmR3DataReadBufferedV2: %08llx|%08llx/%08x/%08x: cbBuf=%#x\n", ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pSSM->u.Read.cbRecLeft, cbInBuffer, cbBufOrg));
|
---|
6326 | if (cbInBuffer > 0)
|
---|
6327 | {
|
---|
6328 | uint32_t const cbToCopy = (uint32_t)cbInBuffer;
|
---|
6329 | Assert(cbBuf > cbToCopy);
|
---|
6330 | memcpy(pvBuf, &pSSM->u.Read.abDataBuffer[off], cbToCopy);
|
---|
6331 | pvBuf = (uint8_t *)pvBuf + cbToCopy;
|
---|
6332 | cbBuf -= cbToCopy;
|
---|
6333 | pSSM->offUnitUser += cbToCopy;
|
---|
6334 | pSSM->u.Read.cbDataBuffer = 0;
|
---|
6335 | pSSM->u.Read.offDataBuffer = 0;
|
---|
6336 | }
|
---|
6337 |
|
---|
6338 | /*
|
---|
6339 | * Buffer more data.
|
---|
6340 | */
|
---|
6341 | do
|
---|
6342 | {
|
---|
6343 | /*
|
---|
6344 | * Read the next record header if no more data.
|
---|
6345 | */
|
---|
6346 | if (!pSSM->u.Read.cbRecLeft)
|
---|
6347 | {
|
---|
6348 | int rc = ssmR3DataReadRecHdrV2(pSSM);
|
---|
6349 | if (RT_FAILURE(rc))
|
---|
6350 | return pSSM->rc = rc;
|
---|
6351 | }
|
---|
6352 | AssertLogRelMsgReturn(!pSSM->u.Read.fEndOfData, ("cbBuf=%zu", cbBuf), pSSM->rc = VERR_SSM_LOADED_TOO_MUCH);
|
---|
6353 |
|
---|
6354 | /*
|
---|
6355 | * Read data from the current record.
|
---|
6356 | * LATER: optimize by reading directly into the output buffer for some cases.
|
---|
6357 | */
|
---|
6358 | uint32_t cbToRead;
|
---|
6359 | switch (pSSM->u.Read.u8TypeAndFlags & SSM_REC_TYPE_MASK)
|
---|
6360 | {
|
---|
6361 | case SSM_REC_TYPE_RAW:
|
---|
6362 | {
|
---|
6363 | cbToRead = RT_MIN(sizeof(pSSM->u.Read.abDataBuffer), pSSM->u.Read.cbRecLeft);
|
---|
6364 | int rc = ssmR3DataReadV2Raw(pSSM, &pSSM->u.Read.abDataBuffer[0], cbToRead);
|
---|
6365 | if (RT_FAILURE(rc))
|
---|
6366 | return pSSM->rc = rc;
|
---|
6367 | pSSM->u.Read.cbRecLeft -= cbToRead;
|
---|
6368 | pSSM->u.Read.cbDataBuffer = cbToRead;
|
---|
6369 | break;
|
---|
6370 | }
|
---|
6371 |
|
---|
6372 | case SSM_REC_TYPE_RAW_LZF:
|
---|
6373 | {
|
---|
6374 | int rc = ssmR3DataReadV2RawLzfHdr(pSSM, &cbToRead);
|
---|
6375 | if (RT_FAILURE(rc))
|
---|
6376 | return rc;
|
---|
6377 | rc = ssmR3DataReadV2RawLzf(pSSM, &pSSM->u.Read.abDataBuffer[0], cbToRead);
|
---|
6378 | if (RT_FAILURE(rc))
|
---|
6379 | return rc;
|
---|
6380 | pSSM->u.Read.cbDataBuffer = cbToRead;
|
---|
6381 | break;
|
---|
6382 | }
|
---|
6383 |
|
---|
6384 | case SSM_REC_TYPE_RAW_ZERO:
|
---|
6385 | {
|
---|
6386 | int rc = ssmR3DataReadV2RawZeroHdr(pSSM, &cbToRead);
|
---|
6387 | if (RT_FAILURE(rc))
|
---|
6388 | return rc;
|
---|
6389 | memset(&pSSM->u.Read.abDataBuffer[0], 0, cbToRead);
|
---|
6390 | pSSM->u.Read.cbDataBuffer = cbToRead;
|
---|
6391 | break;
|
---|
6392 | }
|
---|
6393 |
|
---|
6394 | default:
|
---|
6395 | AssertMsgFailedReturn(("%x\n", pSSM->u.Read.u8TypeAndFlags), VERR_SSM_BAD_REC_TYPE);
|
---|
6396 | }
|
---|
6397 | /*pSSM->u.Read.offDataBuffer = 0;*/
|
---|
6398 |
|
---|
6399 | /*
|
---|
6400 | * Copy data from the buffer.
|
---|
6401 | */
|
---|
6402 | uint32_t cbToCopy = (uint32_t)RT_MIN(cbBuf, cbToRead);
|
---|
6403 | memcpy(pvBuf, &pSSM->u.Read.abDataBuffer[0], cbToCopy);
|
---|
6404 | cbBuf -= cbToCopy;
|
---|
6405 | pvBuf = (uint8_t *)pvBuf + cbToCopy;
|
---|
6406 | pSSM->offUnitUser += cbToCopy;
|
---|
6407 | pSSM->u.Read.offDataBuffer = cbToCopy;
|
---|
6408 | } while (cbBuf > 0);
|
---|
6409 |
|
---|
6410 | Log4(("ssmR3DataReadBufferedV2: %08llx|%08llx/%08x/%08x: cbBuf=%#x %.*Rhxs%s\n",
|
---|
6411 | ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pSSM->u.Read.cbRecLeft, pSSM->u.Read.cbDataBuffer - pSSM->u.Read.offDataBuffer,
|
---|
6412 | cbBufOrg, RT_MIN(SSM_LOG_BYTES, cbBufOrg), pvBufOrg, cbBufOrg > SSM_LOG_BYTES ? "..." : ""));
|
---|
6413 | return VINF_SUCCESS;
|
---|
6414 | }
|
---|
6415 |
|
---|
6416 |
|
---|
6417 | /**
|
---|
6418 | * Inlined worker that handles format checks and buffered reads.
|
---|
6419 | *
|
---|
6420 | * @param pSSM The saved state handle.
|
---|
6421 | * @param pvBuf Where to store the read data.
|
---|
6422 | * @param cbBuf Number of bytes to read.
|
---|
6423 | */
|
---|
6424 | DECLINLINE(int) ssmR3DataRead(PSSMHANDLE pSSM, void *pvBuf, size_t cbBuf)
|
---|
6425 | {
|
---|
6426 | /*
|
---|
6427 | * Fend off previous errors and V1 data units.
|
---|
6428 | */
|
---|
6429 | if (RT_FAILURE(pSSM->rc))
|
---|
6430 | return pSSM->rc;
|
---|
6431 | if (RT_UNLIKELY(pSSM->u.Read.uFmtVerMajor == 1))
|
---|
6432 | return ssmR3DataReadV1(pSSM, pvBuf, cbBuf);
|
---|
6433 |
|
---|
6434 | /*
|
---|
6435 | * Check if the requested data is buffered.
|
---|
6436 | */
|
---|
6437 | uint32_t off = pSSM->u.Read.offDataBuffer;
|
---|
6438 | if ( off + cbBuf > pSSM->u.Read.cbDataBuffer
|
---|
6439 | || cbBuf > sizeof(pSSM->u.Read.abDataBuffer))
|
---|
6440 | {
|
---|
6441 | if (cbBuf <= sizeof(pSSM->u.Read.abDataBuffer) / 8)
|
---|
6442 | return ssmR3DataReadBufferedV2(pSSM, pvBuf, cbBuf);
|
---|
6443 | return ssmR3DataReadUnbufferedV2(pSSM, pvBuf, cbBuf);
|
---|
6444 | }
|
---|
6445 |
|
---|
6446 | memcpy(pvBuf, &pSSM->u.Read.abDataBuffer[off], cbBuf);
|
---|
6447 | pSSM->u.Read.offDataBuffer = off + (uint32_t)cbBuf;
|
---|
6448 | pSSM->offUnitUser += cbBuf;
|
---|
6449 | Log4((cbBuf
|
---|
6450 | ? "ssmR3DataRead: %08llx|%08llx/%08x/%08x: cbBuf=%#x %.*Rhxs%s\n"
|
---|
6451 | : "ssmR3DataRead: %08llx|%08llx/%08x/%08x: cbBuf=%#x\n",
|
---|
6452 | ssmR3StrmTell(&pSSM->Strm), pSSM->offUnit, pSSM->u.Read.cbRecLeft, pSSM->u.Read.cbDataBuffer - pSSM->u.Read.offDataBuffer,
|
---|
6453 | cbBuf, RT_MIN(SSM_LOG_BYTES, cbBuf), pvBuf, cbBuf > SSM_LOG_BYTES ? "..." : ""));
|
---|
6454 |
|
---|
6455 | return VINF_SUCCESS;
|
---|
6456 | }
|
---|
6457 |
|
---|
6458 |
|
---|
6459 | /**
|
---|
6460 | * Gets a structure.
|
---|
6461 | *
|
---|
6462 | * @returns VBox status code.
|
---|
6463 | * @param pSSM The saved state handle.
|
---|
6464 | * @param pvStruct The structure address.
|
---|
6465 | * @param paFields The array of structure fields descriptions.
|
---|
6466 | * The array must be terminated by a SSMFIELD_ENTRY_TERM().
|
---|
6467 | */
|
---|
6468 | VMMR3DECL(int) SSMR3GetStruct(PSSMHANDLE pSSM, void *pvStruct, PCSSMFIELD paFields)
|
---|
6469 | {
|
---|
6470 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6471 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6472 | AssertPtr(pvStruct);
|
---|
6473 | AssertPtr(paFields);
|
---|
6474 |
|
---|
6475 | /* begin marker. */
|
---|
6476 | uint32_t u32Magic;
|
---|
6477 | int rc = SSMR3GetU32(pSSM, &u32Magic);
|
---|
6478 | if (RT_FAILURE(rc))
|
---|
6479 | return rc;
|
---|
6480 | AssertMsgReturn(u32Magic == SSMR3STRUCT_BEGIN, ("u32Magic=%#RX32\n", u32Magic), VERR_SSM_STRUCTURE_MAGIC);
|
---|
6481 |
|
---|
6482 | /* get the fields */
|
---|
6483 | for (PCSSMFIELD pCur = paFields;
|
---|
6484 | pCur->cb != UINT32_MAX && pCur->off != UINT32_MAX;
|
---|
6485 | pCur++)
|
---|
6486 | {
|
---|
6487 | uint8_t *pbField = (uint8_t *)pvStruct + pCur->off;
|
---|
6488 | switch ((uintptr_t)pCur->pfnGetPutOrTransformer)
|
---|
6489 | {
|
---|
6490 | case SSMFIELDTRANS_NO_TRANSFORMATION:
|
---|
6491 | rc = ssmR3DataRead(pSSM, pbField, pCur->cb);
|
---|
6492 | break;
|
---|
6493 |
|
---|
6494 | case SSMFIELDTRANS_GCPTR:
|
---|
6495 | AssertMsgReturn(pCur->cb == sizeof(RTGCPTR), ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6496 | rc = SSMR3GetGCPtr(pSSM, (PRTGCPTR)pbField);
|
---|
6497 | break;
|
---|
6498 |
|
---|
6499 | case SSMFIELDTRANS_GCPHYS:
|
---|
6500 | AssertMsgReturn(pCur->cb == sizeof(RTGCPHYS), ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6501 | rc = SSMR3GetGCPhys(pSSM, (PRTGCPHYS)pbField);
|
---|
6502 | break;
|
---|
6503 |
|
---|
6504 | case SSMFIELDTRANS_RCPTR:
|
---|
6505 | AssertMsgReturn(pCur->cb == sizeof(RTRCPTR), ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6506 | rc = SSMR3GetRCPtr(pSSM, (PRTRCPTR)pbField);
|
---|
6507 | break;
|
---|
6508 |
|
---|
6509 | case SSMFIELDTRANS_RCPTR_ARRAY:
|
---|
6510 | {
|
---|
6511 | uint32_t const cEntries = pCur->cb / sizeof(RTRCPTR);
|
---|
6512 | AssertMsgReturn(pCur->cb == cEntries * sizeof(RTRCPTR) && cEntries, ("%#x (%s)\n", pCur->cb, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6513 | rc = VINF_SUCCESS;
|
---|
6514 | for (uint32_t i = 0; i < cEntries && RT_SUCCESS(rc); i++)
|
---|
6515 | rc = SSMR3GetRCPtr(pSSM, &((PRTRCPTR)pbField)[i]);
|
---|
6516 | break;
|
---|
6517 | }
|
---|
6518 |
|
---|
6519 | default:
|
---|
6520 | AssertMsgFailedReturn(("%#x\n", pCur->pfnGetPutOrTransformer), VERR_SSM_FIELD_COMPLEX);
|
---|
6521 | }
|
---|
6522 | if (RT_FAILURE(rc))
|
---|
6523 | return rc;
|
---|
6524 | }
|
---|
6525 |
|
---|
6526 | /* end marker */
|
---|
6527 | rc = SSMR3GetU32(pSSM, &u32Magic);
|
---|
6528 | if (RT_FAILURE(rc))
|
---|
6529 | return rc;
|
---|
6530 | AssertMsgReturn(u32Magic == SSMR3STRUCT_END, ("u32Magic=%#RX32\n", u32Magic), VERR_SSM_STRUCTURE_MAGIC);
|
---|
6531 | return rc;
|
---|
6532 | }
|
---|
6533 |
|
---|
6534 |
|
---|
6535 | /**
|
---|
6536 | * SSMR3GetStructEx helper that gets a HCPTR that is used as a NULL indicator.
|
---|
6537 | *
|
---|
6538 | * @returns VBox status code.
|
---|
6539 | *
|
---|
6540 | * @param pSSM The saved state handle.
|
---|
6541 | * @param ppv Where to return the value (0/1).
|
---|
6542 | * @param fFlags SSMSTRUCT_FLAGS_XXX.
|
---|
6543 | */
|
---|
6544 | DECLINLINE(int) ssmR3GetHCPtrNI(PSSMHANDLE pSSM, void **ppv, uint32_t fFlags)
|
---|
6545 | {
|
---|
6546 | uintptr_t uPtrNI;
|
---|
6547 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6548 | {
|
---|
6549 | if (ssmR3GetHostBits(pSSM) == 64)
|
---|
6550 | {
|
---|
6551 | uint64_t u;
|
---|
6552 | int rc = ssmR3DataRead(pSSM, &u, sizeof(u));
|
---|
6553 | if (RT_FAILURE(rc))
|
---|
6554 | return rc;
|
---|
6555 | uPtrNI = u ? 1 : 0;
|
---|
6556 | }
|
---|
6557 | else
|
---|
6558 | {
|
---|
6559 | uint32_t u;
|
---|
6560 | int rc = ssmR3DataRead(pSSM, &u, sizeof(u));
|
---|
6561 | if (RT_FAILURE(rc))
|
---|
6562 | return rc;
|
---|
6563 | uPtrNI = u ? 1 : 0;
|
---|
6564 | }
|
---|
6565 | }
|
---|
6566 | else
|
---|
6567 | {
|
---|
6568 | bool f;
|
---|
6569 | int rc = SSMR3GetBool(pSSM, &f);
|
---|
6570 | if (RT_FAILURE(rc))
|
---|
6571 | return rc;
|
---|
6572 | uPtrNI = f ? 1 : 0;
|
---|
6573 | }
|
---|
6574 | *ppv = (void *)uPtrNI;
|
---|
6575 | return VINF_SUCCESS;
|
---|
6576 | }
|
---|
6577 |
|
---|
6578 |
|
---|
6579 | /**
|
---|
6580 | * Guts a structure, extended API.
|
---|
6581 | *
|
---|
6582 | * @returns VBox status code.
|
---|
6583 | * @param pSSM The saved state handle.
|
---|
6584 | * @param pvStruct The structure address.
|
---|
6585 | * @param cbStruct The size of the struct (use for validation only).
|
---|
6586 | * @param fFlags Combination of SSMSTRUCT_FLAGS_XXX defines.
|
---|
6587 | * @param paFields The array of structure fields descriptions. The
|
---|
6588 | * array must be terminated by a SSMFIELD_ENTRY_TERM().
|
---|
6589 | * @param pvUser User argument for any callbacks that paFields might
|
---|
6590 | * contain.
|
---|
6591 | */
|
---|
6592 | VMMR3DECL(int) SSMR3GetStructEx(PSSMHANDLE pSSM, void *pvStruct, size_t cbStruct,
|
---|
6593 | uint32_t fFlags, PCSSMFIELD paFields, void *pvUser)
|
---|
6594 | {
|
---|
6595 | int rc;
|
---|
6596 | uint32_t u32Magic;
|
---|
6597 |
|
---|
6598 | /*
|
---|
6599 | * Validation.
|
---|
6600 | */
|
---|
6601 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6602 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6603 | AssertMsgReturn(!(fFlags & ~SSMSTRUCT_FLAGS_VALID_MASK), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
|
---|
6604 | AssertPtr(pvStruct);
|
---|
6605 | AssertPtr(paFields);
|
---|
6606 |
|
---|
6607 | /*
|
---|
6608 | * Begin marker.
|
---|
6609 | */
|
---|
6610 | if (!(fFlags & SSMSTRUCT_FLAGS_NO_MARKERS))
|
---|
6611 | {
|
---|
6612 | rc = SSMR3GetU32(pSSM, &u32Magic);
|
---|
6613 | if (RT_FAILURE(rc))
|
---|
6614 | return rc;
|
---|
6615 | AssertMsgReturn(u32Magic == SSMR3STRUCT_BEGIN, ("u32Magic=%#RX32\n", u32Magic), VERR_SSM_STRUCTURE_MAGIC);
|
---|
6616 | }
|
---|
6617 |
|
---|
6618 | /*
|
---|
6619 | * Put the fields
|
---|
6620 | */
|
---|
6621 | uint32_t off = 0;
|
---|
6622 | for (PCSSMFIELD pCur = paFields;
|
---|
6623 | pCur->cb != UINT32_MAX && pCur->off != UINT32_MAX;
|
---|
6624 | pCur++)
|
---|
6625 | {
|
---|
6626 | uint32_t const offField = (!SSMFIELDTRANS_IS_PADDING(pCur->pfnGetPutOrTransformer) || pCur->off != UINT32_MAX / 2)
|
---|
6627 | && !SSMFIELDTRANS_IS_OLD(pCur->pfnGetPutOrTransformer)
|
---|
6628 | ? pCur->off
|
---|
6629 | : off;
|
---|
6630 | uint32_t const cbField = SSMFIELDTRANS_IS_OLD(pCur->pfnGetPutOrTransformer)
|
---|
6631 | ? 0
|
---|
6632 | : SSMFIELDTRANS_IS_PADDING(pCur->pfnGetPutOrTransformer)
|
---|
6633 | ? RT_HIWORD(pCur->cb)
|
---|
6634 | : pCur->cb;
|
---|
6635 | AssertMsgReturn( cbField <= cbStruct
|
---|
6636 | && offField + cbField <= cbStruct
|
---|
6637 | && offField + cbField >= offField,
|
---|
6638 | ("off=%#x cb=%#x cbStruct=%#x (%s)\n", cbField, offField, cbStruct, pCur->pszName),
|
---|
6639 | VERR_SSM_FIELD_OUT_OF_BOUNDS);
|
---|
6640 | AssertMsgReturn( !(fFlags & SSMSTRUCT_FLAGS_FULL_STRUCT)
|
---|
6641 | || off == offField,
|
---|
6642 | ("off=%#x offField=%#x (%s)\n", off, offField, pCur->pszName),
|
---|
6643 | VERR_SSM_FIELD_NOT_CONSECUTIVE);
|
---|
6644 |
|
---|
6645 | rc = VINF_SUCCESS;
|
---|
6646 | uint8_t *pbField = (uint8_t *)pvStruct + offField;
|
---|
6647 | switch ((uintptr_t)pCur->pfnGetPutOrTransformer)
|
---|
6648 | {
|
---|
6649 | case SSMFIELDTRANS_NO_TRANSFORMATION:
|
---|
6650 | rc = ssmR3DataRead(pSSM, pbField, cbField);
|
---|
6651 | break;
|
---|
6652 |
|
---|
6653 | case SSMFIELDTRANS_GCPHYS:
|
---|
6654 | AssertMsgReturn(cbField == sizeof(RTGCPHYS), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6655 | rc = SSMR3GetGCPhys(pSSM, (PRTGCPHYS)pbField);
|
---|
6656 | break;
|
---|
6657 |
|
---|
6658 | case SSMFIELDTRANS_GCPTR:
|
---|
6659 | AssertMsgReturn(cbField == sizeof(RTGCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6660 | rc = SSMR3GetGCPtr(pSSM, (PRTGCPTR)pbField);
|
---|
6661 | break;
|
---|
6662 |
|
---|
6663 | case SSMFIELDTRANS_RCPTR:
|
---|
6664 | AssertMsgReturn(cbField == sizeof(RTRCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6665 | rc = SSMR3GetRCPtr(pSSM, (PRTRCPTR)pbField);
|
---|
6666 | break;
|
---|
6667 |
|
---|
6668 | case SSMFIELDTRANS_RCPTR_ARRAY:
|
---|
6669 | {
|
---|
6670 | uint32_t const cEntries = cbField / sizeof(RTRCPTR);
|
---|
6671 | AssertMsgReturn(cbField == cEntries * sizeof(RTRCPTR) && cEntries, ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6672 | rc = VINF_SUCCESS;
|
---|
6673 | for (uint32_t i = 0; i < cEntries && RT_SUCCESS(rc); i++)
|
---|
6674 | rc = SSMR3GetRCPtr(pSSM, &((PRTRCPTR)pbField)[i]);
|
---|
6675 | break;
|
---|
6676 | }
|
---|
6677 |
|
---|
6678 | case SSMFIELDTRANS_HCPTR_NI:
|
---|
6679 | AssertMsgReturn(cbField == sizeof(void *), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6680 | rc = ssmR3GetHCPtrNI(pSSM, (void **)pbField, fFlags);
|
---|
6681 | break;
|
---|
6682 |
|
---|
6683 | case SSMFIELDTRANS_HCPTR_NI_ARRAY:
|
---|
6684 | {
|
---|
6685 | uint32_t const cEntries = cbField / sizeof(void *);
|
---|
6686 | AssertMsgReturn(cbField == cEntries * sizeof(void *) && cEntries, ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6687 | rc = VINF_SUCCESS;
|
---|
6688 | for (uint32_t i = 0; i < cEntries && RT_SUCCESS(rc); i++)
|
---|
6689 | rc = ssmR3GetHCPtrNI(pSSM, &((void **)pbField)[i], fFlags);
|
---|
6690 | break;
|
---|
6691 | }
|
---|
6692 |
|
---|
6693 | case SSMFIELDTRANS_HCPTR_HACK_U32:
|
---|
6694 | AssertMsgReturn(cbField == sizeof(void *), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6695 | *(uintptr_t *)pbField = 0;
|
---|
6696 | rc = ssmR3DataRead(pSSM, pbField, sizeof(uint32_t));
|
---|
6697 | if ((fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE) && ssmR3GetHostBits(pSSM) == 64)
|
---|
6698 | {
|
---|
6699 | uint32_t u32;
|
---|
6700 | rc = ssmR3DataRead(pSSM, &u32, sizeof(uint32_t));
|
---|
6701 | AssertMsgReturn(RT_FAILURE(rc) || u32 == 0 || (fFlags & SSMSTRUCT_FLAGS_SAVED_AS_MEM),
|
---|
6702 | ("high=%#x low=%#x (%s)\n", u32, *(uint32_t *)pbField, pCur->pszName),
|
---|
6703 | VERR_SSM_FIELD_INVALID_VALUE);
|
---|
6704 | }
|
---|
6705 | break;
|
---|
6706 |
|
---|
6707 | case SSMFIELDTRANS_U32_ZX_U64:
|
---|
6708 | AssertMsgReturn(cbField == sizeof(uint64_t), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6709 | ((uint32_t *)pbField)[1] = 0;
|
---|
6710 | rc = SSMR3GetU32(pSSM, (uint32_t *)pbField);
|
---|
6711 | break;
|
---|
6712 |
|
---|
6713 |
|
---|
6714 | case SSMFIELDTRANS_IGNORE:
|
---|
6715 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6716 | rc = SSMR3Skip(pSSM, cbField);
|
---|
6717 | break;
|
---|
6718 |
|
---|
6719 | case SSMFIELDTRANS_IGN_GCPHYS:
|
---|
6720 | AssertMsgReturn(cbField == sizeof(RTGCPHYS), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6721 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6722 | rc = SSMR3Skip(pSSM, pSSM->u.Read.cbGCPhys);
|
---|
6723 | break;
|
---|
6724 |
|
---|
6725 | case SSMFIELDTRANS_IGN_GCPTR:
|
---|
6726 | AssertMsgReturn(cbField == sizeof(RTGCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6727 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6728 | rc = SSMR3Skip(pSSM, pSSM->u.Read.cbGCPtr);
|
---|
6729 | break;
|
---|
6730 |
|
---|
6731 | case SSMFIELDTRANS_IGN_RCPTR:
|
---|
6732 | AssertMsgReturn(cbField == sizeof(RTRCPTR), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6733 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6734 | rc = SSMR3Skip(pSSM, sizeof(RTRCPTR));
|
---|
6735 | break;
|
---|
6736 |
|
---|
6737 | case SSMFIELDTRANS_IGN_HCPTR:
|
---|
6738 | AssertMsgReturn(cbField == sizeof(void *), ("%#x (%s)\n", cbField, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6739 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6740 | rc = SSMR3Skip(pSSM, ssmR3GetHostBits(pSSM) / 8);
|
---|
6741 | break;
|
---|
6742 |
|
---|
6743 |
|
---|
6744 | case SSMFIELDTRANS_OLD:
|
---|
6745 | AssertMsgReturn(pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6746 | rc = SSMR3Skip(pSSM, pCur->cb);
|
---|
6747 | break;
|
---|
6748 |
|
---|
6749 | case SSMFIELDTRANS_OLD_GCPHYS:
|
---|
6750 | AssertMsgReturn(pCur->cb == sizeof(RTGCPHYS) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6751 | rc = SSMR3Skip(pSSM, pSSM->u.Read.cbGCPhys);
|
---|
6752 | break;
|
---|
6753 |
|
---|
6754 | case SSMFIELDTRANS_OLD_GCPTR:
|
---|
6755 | AssertMsgReturn(pCur->cb == sizeof(RTGCPTR) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6756 | rc = SSMR3Skip(pSSM, pSSM->u.Read.cbGCPtr);
|
---|
6757 | break;
|
---|
6758 |
|
---|
6759 | case SSMFIELDTRANS_OLD_RCPTR:
|
---|
6760 | AssertMsgReturn(pCur->cb == sizeof(RTRCPTR) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6761 | rc = SSMR3Skip(pSSM, sizeof(RTRCPTR));
|
---|
6762 | break;
|
---|
6763 |
|
---|
6764 | case SSMFIELDTRANS_OLD_HCPTR:
|
---|
6765 | AssertMsgReturn(pCur->cb == sizeof(void *) && pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6766 | rc = SSMR3Skip(pSSM, ssmR3GetHostBits(pSSM) / 8);
|
---|
6767 | break;
|
---|
6768 |
|
---|
6769 | case SSMFIELDTRANS_OLD_PAD_HC:
|
---|
6770 | AssertMsgReturn(pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6771 | rc = SSMR3Skip(pSSM, ssmR3GetHostBits(pSSM) == 64 ? RT_HIWORD(pCur->cb) : RT_LOWORD(pCur->cb));
|
---|
6772 | break;
|
---|
6773 |
|
---|
6774 | case SSMFIELDTRANS_OLD_PAD_MSC32:
|
---|
6775 | AssertMsgReturn(pCur->off == UINT32_MAX / 2, ("%#x %#x (%s)\n", pCur->cb, pCur->off, pCur->pszName), VERR_SSM_FIELD_INVALID_SIZE);
|
---|
6776 | if (ssmR3IsHostMsc32(pSSM))
|
---|
6777 | rc = SSMR3Skip(pSSM, pCur->cb);
|
---|
6778 | break;
|
---|
6779 |
|
---|
6780 |
|
---|
6781 | case SSMFIELDTRANS_PAD_HC:
|
---|
6782 | case SSMFIELDTRANS_PAD_HC32:
|
---|
6783 | case SSMFIELDTRANS_PAD_HC64:
|
---|
6784 | case SSMFIELDTRANS_PAD_HC_AUTO:
|
---|
6785 | case SSMFIELDTRANS_PAD_MSC32_AUTO:
|
---|
6786 | {
|
---|
6787 | uint32_t cb32 = RT_BYTE1(pCur->cb);
|
---|
6788 | uint32_t cb64 = RT_BYTE2(pCur->cb);
|
---|
6789 | uint32_t cbCtx = HC_ARCH_BITS == 64
|
---|
6790 | || ( (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_MSC32_AUTO
|
---|
6791 | && !SSM_HOST_IS_MSC_32)
|
---|
6792 | ? cb64 : cb32;
|
---|
6793 | uint32_t cbSaved = ssmR3GetHostBits(pSSM) == 64
|
---|
6794 | || ( (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_MSC32_AUTO
|
---|
6795 | && !ssmR3IsHostMsc32(pSSM))
|
---|
6796 | ? cb64 : cb32;
|
---|
6797 | AssertMsgReturn( cbField == cbCtx
|
---|
6798 | && ( ( pCur->off == UINT32_MAX / 2
|
---|
6799 | && ( cbField == 0
|
---|
6800 | || (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_HC_AUTO
|
---|
6801 | || (uintptr_t)pCur->pfnGetPutOrTransformer == SSMFIELDTRANS_PAD_MSC32_AUTO
|
---|
6802 | )
|
---|
6803 | )
|
---|
6804 | || (pCur->off != UINT32_MAX / 2 && cbField != 0)
|
---|
6805 | )
|
---|
6806 | , ("cbField=%#x cb32=%#x cb64=%#x HC_ARCH_BITS=%u cbCtx=%#x cbSaved=%#x off=%#x\n",
|
---|
6807 | cbField, cb32, cb64, HC_ARCH_BITS, cbCtx, cbSaved, pCur->off),
|
---|
6808 | VERR_SSM_FIELD_INVALID_PADDING_SIZE);
|
---|
6809 | if (fFlags & SSMSTRUCT_FLAGS_DONT_IGNORE)
|
---|
6810 | rc = SSMR3Skip(pSSM, cbSaved);
|
---|
6811 | break;
|
---|
6812 | }
|
---|
6813 |
|
---|
6814 | default:
|
---|
6815 | AssertPtrReturn(pCur->pfnGetPutOrTransformer, VERR_SSM_FIELD_INVALID_CALLBACK);
|
---|
6816 | rc = pCur->pfnGetPutOrTransformer(pSSM, pCur, pvStruct, fFlags, true /*fGetOrPut*/, pvUser);
|
---|
6817 | break;
|
---|
6818 | }
|
---|
6819 | if (RT_FAILURE(rc))
|
---|
6820 | return rc;
|
---|
6821 |
|
---|
6822 | off = offField + cbField;
|
---|
6823 | }
|
---|
6824 | AssertMsgReturn( !(fFlags & SSMSTRUCT_FLAGS_FULL_STRUCT)
|
---|
6825 | || off == cbStruct,
|
---|
6826 | ("off=%#x cbStruct=%#x\n", off, cbStruct),
|
---|
6827 | VERR_SSM_FIELD_NOT_CONSECUTIVE);
|
---|
6828 |
|
---|
6829 | /*
|
---|
6830 | * End marker
|
---|
6831 | */
|
---|
6832 | if (!(fFlags & SSMSTRUCT_FLAGS_NO_MARKERS))
|
---|
6833 | {
|
---|
6834 | rc = SSMR3GetU32(pSSM, &u32Magic);
|
---|
6835 | if (RT_FAILURE(rc))
|
---|
6836 | return rc;
|
---|
6837 | AssertMsgReturn(u32Magic == SSMR3STRUCT_END, ("u32Magic=%#RX32\n", u32Magic), VERR_SSM_STRUCTURE_MAGIC);
|
---|
6838 | }
|
---|
6839 |
|
---|
6840 | return VINF_SUCCESS;
|
---|
6841 | }
|
---|
6842 |
|
---|
6843 |
|
---|
6844 | /**
|
---|
6845 | * Loads a boolean item from the current data unit.
|
---|
6846 | *
|
---|
6847 | * @returns VBox status.
|
---|
6848 | * @param pSSM The saved state handle.
|
---|
6849 | * @param pfBool Where to store the item.
|
---|
6850 | */
|
---|
6851 | VMMR3DECL(int) SSMR3GetBool(PSSMHANDLE pSSM, bool *pfBool)
|
---|
6852 | {
|
---|
6853 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6854 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6855 | uint8_t u8; /* see SSMR3PutBool */
|
---|
6856 | int rc = ssmR3DataRead(pSSM, &u8, sizeof(u8));
|
---|
6857 | if (RT_SUCCESS(rc))
|
---|
6858 | {
|
---|
6859 | Assert(u8 <= 1);
|
---|
6860 | *pfBool = !!u8;
|
---|
6861 | }
|
---|
6862 | return rc;
|
---|
6863 | }
|
---|
6864 |
|
---|
6865 |
|
---|
6866 | /**
|
---|
6867 | * Loads a 8-bit unsigned integer item from the current data unit.
|
---|
6868 | *
|
---|
6869 | * @returns VBox status.
|
---|
6870 | * @param pSSM The saved state handle.
|
---|
6871 | * @param pu8 Where to store the item.
|
---|
6872 | */
|
---|
6873 | VMMR3DECL(int) SSMR3GetU8(PSSMHANDLE pSSM, uint8_t *pu8)
|
---|
6874 | {
|
---|
6875 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6876 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6877 | return ssmR3DataRead(pSSM, pu8, sizeof(*pu8));
|
---|
6878 | }
|
---|
6879 |
|
---|
6880 |
|
---|
6881 | /**
|
---|
6882 | * Loads a 8-bit signed integer item from the current data unit.
|
---|
6883 | *
|
---|
6884 | * @returns VBox status.
|
---|
6885 | * @param pSSM The saved state handle.
|
---|
6886 | * @param pi8 Where to store the item.
|
---|
6887 | */
|
---|
6888 | VMMR3DECL(int) SSMR3GetS8(PSSMHANDLE pSSM, int8_t *pi8)
|
---|
6889 | {
|
---|
6890 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6891 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6892 | return ssmR3DataRead(pSSM, pi8, sizeof(*pi8));
|
---|
6893 | }
|
---|
6894 |
|
---|
6895 |
|
---|
6896 | /**
|
---|
6897 | * Loads a 16-bit unsigned integer item from the current data unit.
|
---|
6898 | *
|
---|
6899 | * @returns VBox status.
|
---|
6900 | * @param pSSM The saved state handle.
|
---|
6901 | * @param pu16 Where to store the item.
|
---|
6902 | */
|
---|
6903 | VMMR3DECL(int) SSMR3GetU16(PSSMHANDLE pSSM, uint16_t *pu16)
|
---|
6904 | {
|
---|
6905 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6906 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6907 | return ssmR3DataRead(pSSM, pu16, sizeof(*pu16));
|
---|
6908 | }
|
---|
6909 |
|
---|
6910 |
|
---|
6911 | /**
|
---|
6912 | * Loads a 16-bit signed integer item from the current data unit.
|
---|
6913 | *
|
---|
6914 | * @returns VBox status.
|
---|
6915 | * @param pSSM The saved state handle.
|
---|
6916 | * @param pi16 Where to store the item.
|
---|
6917 | */
|
---|
6918 | VMMR3DECL(int) SSMR3GetS16(PSSMHANDLE pSSM, int16_t *pi16)
|
---|
6919 | {
|
---|
6920 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6921 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6922 | return ssmR3DataRead(pSSM, pi16, sizeof(*pi16));
|
---|
6923 | }
|
---|
6924 |
|
---|
6925 |
|
---|
6926 | /**
|
---|
6927 | * Loads a 32-bit unsigned integer item from the current data unit.
|
---|
6928 | *
|
---|
6929 | * @returns VBox status.
|
---|
6930 | * @param pSSM The saved state handle.
|
---|
6931 | * @param pu32 Where to store the item.
|
---|
6932 | */
|
---|
6933 | VMMR3DECL(int) SSMR3GetU32(PSSMHANDLE pSSM, uint32_t *pu32)
|
---|
6934 | {
|
---|
6935 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6936 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6937 | return ssmR3DataRead(pSSM, pu32, sizeof(*pu32));
|
---|
6938 | }
|
---|
6939 |
|
---|
6940 |
|
---|
6941 | /**
|
---|
6942 | * Loads a 32-bit signed integer item from the current data unit.
|
---|
6943 | *
|
---|
6944 | * @returns VBox status.
|
---|
6945 | * @param pSSM The saved state handle.
|
---|
6946 | * @param pi32 Where to store the item.
|
---|
6947 | */
|
---|
6948 | VMMR3DECL(int) SSMR3GetS32(PSSMHANDLE pSSM, int32_t *pi32)
|
---|
6949 | {
|
---|
6950 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6951 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6952 | return ssmR3DataRead(pSSM, pi32, sizeof(*pi32));
|
---|
6953 | }
|
---|
6954 |
|
---|
6955 |
|
---|
6956 | /**
|
---|
6957 | * Loads a 64-bit unsigned integer item from the current data unit.
|
---|
6958 | *
|
---|
6959 | * @returns VBox status.
|
---|
6960 | * @param pSSM The saved state handle.
|
---|
6961 | * @param pu64 Where to store the item.
|
---|
6962 | */
|
---|
6963 | VMMR3DECL(int) SSMR3GetU64(PSSMHANDLE pSSM, uint64_t *pu64)
|
---|
6964 | {
|
---|
6965 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6966 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6967 | return ssmR3DataRead(pSSM, pu64, sizeof(*pu64));
|
---|
6968 | }
|
---|
6969 |
|
---|
6970 |
|
---|
6971 | /**
|
---|
6972 | * Loads a 64-bit signed integer item from the current data unit.
|
---|
6973 | *
|
---|
6974 | * @returns VBox status.
|
---|
6975 | * @param pSSM The saved state handle.
|
---|
6976 | * @param pi64 Where to store the item.
|
---|
6977 | */
|
---|
6978 | VMMR3DECL(int) SSMR3GetS64(PSSMHANDLE pSSM, int64_t *pi64)
|
---|
6979 | {
|
---|
6980 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6981 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6982 | return ssmR3DataRead(pSSM, pi64, sizeof(*pi64));
|
---|
6983 | }
|
---|
6984 |
|
---|
6985 |
|
---|
6986 | /**
|
---|
6987 | * Loads a 128-bit unsigned integer item from the current data unit.
|
---|
6988 | *
|
---|
6989 | * @returns VBox status.
|
---|
6990 | * @param pSSM The saved state handle.
|
---|
6991 | * @param pu128 Where to store the item.
|
---|
6992 | */
|
---|
6993 | VMMR3DECL(int) SSMR3GetU128(PSSMHANDLE pSSM, uint128_t *pu128)
|
---|
6994 | {
|
---|
6995 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
6996 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
6997 | return ssmR3DataRead(pSSM, pu128, sizeof(*pu128));
|
---|
6998 | }
|
---|
6999 |
|
---|
7000 |
|
---|
7001 | /**
|
---|
7002 | * Loads a 128-bit signed integer item from the current data unit.
|
---|
7003 | *
|
---|
7004 | * @returns VBox status.
|
---|
7005 | * @param pSSM The saved state handle.
|
---|
7006 | * @param pi128 Where to store the item.
|
---|
7007 | */
|
---|
7008 | VMMR3DECL(int) SSMR3GetS128(PSSMHANDLE pSSM, int128_t *pi128)
|
---|
7009 | {
|
---|
7010 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7011 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7012 | return ssmR3DataRead(pSSM, pi128, sizeof(*pi128));
|
---|
7013 | }
|
---|
7014 |
|
---|
7015 |
|
---|
7016 | /**
|
---|
7017 | * Loads a VBox unsigned integer item from the current data unit.
|
---|
7018 | *
|
---|
7019 | * @returns VBox status.
|
---|
7020 | * @param pSSM The saved state handle.
|
---|
7021 | * @param pu Where to store the integer.
|
---|
7022 | */
|
---|
7023 | VMMR3DECL(int) SSMR3GetUInt(PSSMHANDLE pSSM, PRTUINT pu)
|
---|
7024 | {
|
---|
7025 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7026 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7027 | return ssmR3DataRead(pSSM, pu, sizeof(*pu));
|
---|
7028 | }
|
---|
7029 |
|
---|
7030 |
|
---|
7031 | /**
|
---|
7032 | * Loads a VBox signed integer item from the current data unit.
|
---|
7033 | *
|
---|
7034 | * @returns VBox status.
|
---|
7035 | * @param pSSM The saved state handle.
|
---|
7036 | * @param pi Where to store the integer.
|
---|
7037 | */
|
---|
7038 | VMMR3DECL(int) SSMR3GetSInt(PSSMHANDLE pSSM, PRTINT pi)
|
---|
7039 | {
|
---|
7040 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7041 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7042 | return ssmR3DataRead(pSSM, pi, sizeof(*pi));
|
---|
7043 | }
|
---|
7044 |
|
---|
7045 |
|
---|
7046 | /**
|
---|
7047 | * Loads a GC natural unsigned integer item from the current data unit.
|
---|
7048 | *
|
---|
7049 | * @returns VBox status.
|
---|
7050 | * @param pSSM The saved state handle.
|
---|
7051 | * @param pu Where to store the integer.
|
---|
7052 | *
|
---|
7053 | * @deprecated Silly type with an incorrect size, don't use it.
|
---|
7054 | */
|
---|
7055 | VMMR3DECL(int) SSMR3GetGCUInt(PSSMHANDLE pSSM, PRTGCUINT pu)
|
---|
7056 | {
|
---|
7057 | AssertCompile(sizeof(RTGCPTR) == sizeof(*pu));
|
---|
7058 | return SSMR3GetGCPtr(pSSM, (PRTGCPTR)pu);
|
---|
7059 | }
|
---|
7060 |
|
---|
7061 |
|
---|
7062 | /**
|
---|
7063 | * Loads a GC unsigned integer register item from the current data unit.
|
---|
7064 | *
|
---|
7065 | * @returns VBox status.
|
---|
7066 | * @param pSSM The saved state handle.
|
---|
7067 | * @param pu Where to store the integer.
|
---|
7068 | */
|
---|
7069 | VMMR3DECL(int) SSMR3GetGCUIntReg(PSSMHANDLE pSSM, PRTGCUINTREG pu)
|
---|
7070 | {
|
---|
7071 | AssertCompile(sizeof(RTGCPTR) == sizeof(*pu));
|
---|
7072 | return SSMR3GetGCPtr(pSSM, (PRTGCPTR)pu);
|
---|
7073 | }
|
---|
7074 |
|
---|
7075 |
|
---|
7076 | /**
|
---|
7077 | * Loads a 32 bits GC physical address item from the current data unit.
|
---|
7078 | *
|
---|
7079 | * @returns VBox status.
|
---|
7080 | * @param pSSM The saved state handle.
|
---|
7081 | * @param pGCPhys Where to store the GC physical address.
|
---|
7082 | */
|
---|
7083 | VMMR3DECL(int) SSMR3GetGCPhys32(PSSMHANDLE pSSM, PRTGCPHYS32 pGCPhys)
|
---|
7084 | {
|
---|
7085 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7086 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7087 | return ssmR3DataRead(pSSM, pGCPhys, sizeof(*pGCPhys));
|
---|
7088 | }
|
---|
7089 |
|
---|
7090 |
|
---|
7091 | /**
|
---|
7092 | * Loads a 64 bits GC physical address item from the current data unit.
|
---|
7093 | *
|
---|
7094 | * @returns VBox status.
|
---|
7095 | * @param pSSM The saved state handle.
|
---|
7096 | * @param pGCPhys Where to store the GC physical address.
|
---|
7097 | */
|
---|
7098 | VMMR3DECL(int) SSMR3GetGCPhys64(PSSMHANDLE pSSM, PRTGCPHYS64 pGCPhys)
|
---|
7099 | {
|
---|
7100 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7101 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7102 | return ssmR3DataRead(pSSM, pGCPhys, sizeof(*pGCPhys));
|
---|
7103 | }
|
---|
7104 |
|
---|
7105 |
|
---|
7106 | /**
|
---|
7107 | * Loads a GC physical address item from the current data unit.
|
---|
7108 | *
|
---|
7109 | * @returns VBox status.
|
---|
7110 | * @param pSSM The saved state handle.
|
---|
7111 | * @param pGCPhys Where to store the GC physical address.
|
---|
7112 | */
|
---|
7113 | VMMR3DECL(int) SSMR3GetGCPhys(PSSMHANDLE pSSM, PRTGCPHYS pGCPhys)
|
---|
7114 | {
|
---|
7115 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7116 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7117 |
|
---|
7118 | /*
|
---|
7119 | * Default size?
|
---|
7120 | */
|
---|
7121 | if (RT_LIKELY(sizeof(*pGCPhys) == pSSM->u.Read.cbGCPhys))
|
---|
7122 | return ssmR3DataRead(pSSM, pGCPhys, sizeof(*pGCPhys));
|
---|
7123 |
|
---|
7124 | /*
|
---|
7125 | * Fiddly.
|
---|
7126 | */
|
---|
7127 | Assert(sizeof(*pGCPhys) == sizeof(uint64_t) || sizeof(*pGCPhys) == sizeof(uint32_t));
|
---|
7128 | Assert(pSSM->u.Read.cbGCPhys == sizeof(uint64_t) || pSSM->u.Read.cbGCPhys == sizeof(uint32_t));
|
---|
7129 | if (pSSM->u.Read.cbGCPhys == sizeof(uint64_t))
|
---|
7130 | {
|
---|
7131 | /* 64-bit saved, 32-bit load: try truncate it. */
|
---|
7132 | uint64_t u64;
|
---|
7133 | int rc = ssmR3DataRead(pSSM, &u64, sizeof(uint64_t));
|
---|
7134 | if (RT_FAILURE(rc))
|
---|
7135 | return rc;
|
---|
7136 | if (u64 >= _4G)
|
---|
7137 | return VERR_SSM_GCPHYS_OVERFLOW;
|
---|
7138 | *pGCPhys = (RTGCPHYS)u64;
|
---|
7139 | return rc;
|
---|
7140 | }
|
---|
7141 |
|
---|
7142 | /* 32-bit saved, 64-bit load: clear the high part. */
|
---|
7143 | *pGCPhys = 0;
|
---|
7144 | return ssmR3DataRead(pSSM, pGCPhys, sizeof(uint32_t));
|
---|
7145 | }
|
---|
7146 |
|
---|
7147 |
|
---|
7148 | /**
|
---|
7149 | * Loads a GC virtual address item from the current data unit.
|
---|
7150 | *
|
---|
7151 | * Only applies to in the 1.1 format:
|
---|
7152 | * - SSMR3GetGCPtr
|
---|
7153 | * - SSMR3GetGCUIntPtr
|
---|
7154 | * - SSMR3GetGCUInt
|
---|
7155 | * - SSMR3GetGCUIntReg
|
---|
7156 | *
|
---|
7157 | * Put functions are not affected.
|
---|
7158 | *
|
---|
7159 | * @returns VBox status.
|
---|
7160 | * @param pSSM The saved state handle.
|
---|
7161 | * @param cbGCPtr Size of RTGCPTR
|
---|
7162 | *
|
---|
7163 | * @remarks This interface only works with saved state version 1.1, if the
|
---|
7164 | * format isn't 1.1 the call will be ignored.
|
---|
7165 | */
|
---|
7166 | VMMR3_INT_DECL(int) SSMR3HandleSetGCPtrSize(PSSMHANDLE pSSM, unsigned cbGCPtr)
|
---|
7167 | {
|
---|
7168 | Assert(cbGCPtr == sizeof(RTGCPTR32) || cbGCPtr == sizeof(RTGCPTR64));
|
---|
7169 | if (!pSSM->u.Read.fFixedGCPtrSize)
|
---|
7170 | {
|
---|
7171 | Log(("SSMR3SetGCPtrSize: %u -> %u bytes\n", pSSM->u.Read.cbGCPtr, cbGCPtr));
|
---|
7172 | pSSM->u.Read.cbGCPtr = cbGCPtr;
|
---|
7173 | pSSM->u.Read.fFixedGCPtrSize = true;
|
---|
7174 | }
|
---|
7175 | else if ( pSSM->u.Read.cbGCPtr != cbGCPtr
|
---|
7176 | && pSSM->u.Read.uFmtVerMajor == 1
|
---|
7177 | && pSSM->u.Read.uFmtVerMinor == 1)
|
---|
7178 | AssertMsgFailed(("SSMR3SetGCPtrSize: already fixed at %u bytes; requested %u bytes\n", pSSM->u.Read.cbGCPtr, cbGCPtr));
|
---|
7179 |
|
---|
7180 | return VINF_SUCCESS;
|
---|
7181 | }
|
---|
7182 |
|
---|
7183 |
|
---|
7184 | /**
|
---|
7185 | * Loads a GC virtual address item from the current data unit.
|
---|
7186 | *
|
---|
7187 | * @returns VBox status.
|
---|
7188 | * @param pSSM The saved state handle.
|
---|
7189 | * @param pGCPtr Where to store the GC virtual address.
|
---|
7190 | */
|
---|
7191 | VMMR3DECL(int) SSMR3GetGCPtr(PSSMHANDLE pSSM, PRTGCPTR pGCPtr)
|
---|
7192 | {
|
---|
7193 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7194 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7195 |
|
---|
7196 | /*
|
---|
7197 | * Default size?
|
---|
7198 | */
|
---|
7199 | if (RT_LIKELY(sizeof(*pGCPtr) == pSSM->u.Read.cbGCPtr))
|
---|
7200 | return ssmR3DataRead(pSSM, pGCPtr, sizeof(*pGCPtr));
|
---|
7201 |
|
---|
7202 | /*
|
---|
7203 | * Fiddly.
|
---|
7204 | */
|
---|
7205 | Assert(sizeof(*pGCPtr) == sizeof(uint64_t) || sizeof(*pGCPtr) == sizeof(uint32_t));
|
---|
7206 | Assert(pSSM->u.Read.cbGCPtr == sizeof(uint64_t) || pSSM->u.Read.cbGCPtr == sizeof(uint32_t));
|
---|
7207 | if (pSSM->u.Read.cbGCPtr == sizeof(uint64_t))
|
---|
7208 | {
|
---|
7209 | /* 64-bit saved, 32-bit load: try truncate it. */
|
---|
7210 | uint64_t u64;
|
---|
7211 | int rc = ssmR3DataRead(pSSM, &u64, sizeof(uint64_t));
|
---|
7212 | if (RT_FAILURE(rc))
|
---|
7213 | return rc;
|
---|
7214 | if (u64 >= _4G)
|
---|
7215 | return VERR_SSM_GCPTR_OVERFLOW;
|
---|
7216 | *pGCPtr = (RTGCPTR)u64;
|
---|
7217 | return rc;
|
---|
7218 | }
|
---|
7219 |
|
---|
7220 | /* 32-bit saved, 64-bit load: clear the high part. */
|
---|
7221 | *pGCPtr = 0;
|
---|
7222 | return ssmR3DataRead(pSSM, pGCPtr, sizeof(uint32_t));
|
---|
7223 | }
|
---|
7224 |
|
---|
7225 |
|
---|
7226 | /**
|
---|
7227 | * Loads a GC virtual address (represented as unsigned integer) item from the current data unit.
|
---|
7228 | *
|
---|
7229 | * @returns VBox status.
|
---|
7230 | * @param pSSM The saved state handle.
|
---|
7231 | * @param pGCPtr Where to store the GC virtual address.
|
---|
7232 | */
|
---|
7233 | VMMR3DECL(int) SSMR3GetGCUIntPtr(PSSMHANDLE pSSM, PRTGCUINTPTR pGCPtr)
|
---|
7234 | {
|
---|
7235 | AssertCompile(sizeof(RTGCPTR) == sizeof(*pGCPtr));
|
---|
7236 | return SSMR3GetGCPtr(pSSM, (PRTGCPTR)pGCPtr);
|
---|
7237 | }
|
---|
7238 |
|
---|
7239 |
|
---|
7240 | /**
|
---|
7241 | * Loads an RC virtual address item from the current data unit.
|
---|
7242 | *
|
---|
7243 | * @returns VBox status.
|
---|
7244 | * @param pSSM The saved state handle.
|
---|
7245 | * @param pRCPtr Where to store the RC virtual address.
|
---|
7246 | */
|
---|
7247 | VMMR3DECL(int) SSMR3GetRCPtr(PSSMHANDLE pSSM, PRTRCPTR pRCPtr)
|
---|
7248 | {
|
---|
7249 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7250 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7251 | return ssmR3DataRead(pSSM, pRCPtr, sizeof(*pRCPtr));
|
---|
7252 | }
|
---|
7253 |
|
---|
7254 |
|
---|
7255 | /**
|
---|
7256 | * Loads a I/O port address item from the current data unit.
|
---|
7257 | *
|
---|
7258 | * @returns VBox status.
|
---|
7259 | * @param pSSM The saved state handle.
|
---|
7260 | * @param pIOPort Where to store the I/O port address.
|
---|
7261 | */
|
---|
7262 | VMMR3DECL(int) SSMR3GetIOPort(PSSMHANDLE pSSM, PRTIOPORT pIOPort)
|
---|
7263 | {
|
---|
7264 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7265 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7266 | return ssmR3DataRead(pSSM, pIOPort, sizeof(*pIOPort));
|
---|
7267 | }
|
---|
7268 |
|
---|
7269 |
|
---|
7270 | /**
|
---|
7271 | * Loads a selector item from the current data unit.
|
---|
7272 | *
|
---|
7273 | * @returns VBox status.
|
---|
7274 | * @param pSSM The saved state handle.
|
---|
7275 | * @param pSel Where to store the selector.
|
---|
7276 | */
|
---|
7277 | VMMR3DECL(int) SSMR3GetSel(PSSMHANDLE pSSM, PRTSEL pSel)
|
---|
7278 | {
|
---|
7279 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7280 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7281 | return ssmR3DataRead(pSSM, pSel, sizeof(*pSel));
|
---|
7282 | }
|
---|
7283 |
|
---|
7284 |
|
---|
7285 | /**
|
---|
7286 | * Loads a memory item from the current data unit.
|
---|
7287 | *
|
---|
7288 | * @returns VBox status.
|
---|
7289 | * @param pSSM The saved state handle.
|
---|
7290 | * @param pv Where to store the item.
|
---|
7291 | * @param cb Size of the item.
|
---|
7292 | */
|
---|
7293 | VMMR3DECL(int) SSMR3GetMem(PSSMHANDLE pSSM, void *pv, size_t cb)
|
---|
7294 | {
|
---|
7295 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7296 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7297 | return ssmR3DataRead(pSSM, pv, cb);
|
---|
7298 | }
|
---|
7299 |
|
---|
7300 |
|
---|
7301 | /**
|
---|
7302 | * Loads a string item from the current data unit.
|
---|
7303 | *
|
---|
7304 | * @returns VBox status.
|
---|
7305 | * @param pSSM The saved state handle.
|
---|
7306 | * @param psz Where to store the item.
|
---|
7307 | * @param cbMax Max size of the item (including '\\0').
|
---|
7308 | */
|
---|
7309 | VMMR3DECL(int) SSMR3GetStrZ(PSSMHANDLE pSSM, char *psz, size_t cbMax)
|
---|
7310 | {
|
---|
7311 | return SSMR3GetStrZEx(pSSM, psz, cbMax, NULL);
|
---|
7312 | }
|
---|
7313 |
|
---|
7314 |
|
---|
7315 | /**
|
---|
7316 | * Loads a string item from the current data unit.
|
---|
7317 | *
|
---|
7318 | * @returns VBox status.
|
---|
7319 | * @param pSSM The saved state handle.
|
---|
7320 | * @param psz Where to store the item.
|
---|
7321 | * @param cbMax Max size of the item (including '\\0').
|
---|
7322 | * @param pcbStr The length of the loaded string excluding the '\\0'. (optional)
|
---|
7323 | */
|
---|
7324 | VMMR3DECL(int) SSMR3GetStrZEx(PSSMHANDLE pSSM, char *psz, size_t cbMax, size_t *pcbStr)
|
---|
7325 | {
|
---|
7326 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7327 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7328 |
|
---|
7329 | /* read size prefix. */
|
---|
7330 | uint32_t u32;
|
---|
7331 | int rc = SSMR3GetU32(pSSM, &u32);
|
---|
7332 | if (RT_SUCCESS(rc))
|
---|
7333 | {
|
---|
7334 | if (pcbStr)
|
---|
7335 | *pcbStr = u32;
|
---|
7336 | if (u32 < cbMax)
|
---|
7337 | {
|
---|
7338 | /* terminate and read string content. */
|
---|
7339 | psz[u32] = '\0';
|
---|
7340 | return ssmR3DataRead(pSSM, psz, u32);
|
---|
7341 | }
|
---|
7342 | return VERR_TOO_MUCH_DATA;
|
---|
7343 | }
|
---|
7344 | return rc;
|
---|
7345 | }
|
---|
7346 |
|
---|
7347 |
|
---|
7348 | /**
|
---|
7349 | * Skips a number of bytes in the current data unit.
|
---|
7350 | *
|
---|
7351 | * @returns VBox status code.
|
---|
7352 | * @param pSSM The SSM handle.
|
---|
7353 | * @param cb The number of bytes to skip.
|
---|
7354 | */
|
---|
7355 | VMMR3DECL(int) SSMR3Skip(PSSMHANDLE pSSM, size_t cb)
|
---|
7356 | {
|
---|
7357 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7358 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7359 | while (cb > 0)
|
---|
7360 | {
|
---|
7361 | uint8_t abBuf[8192];
|
---|
7362 | size_t cbCur = RT_MIN(sizeof(abBuf), cb);
|
---|
7363 | cb -= cbCur;
|
---|
7364 | int rc = ssmR3DataRead(pSSM, abBuf, cbCur);
|
---|
7365 | if (RT_FAILURE(rc))
|
---|
7366 | return rc;
|
---|
7367 | }
|
---|
7368 |
|
---|
7369 | return VINF_SUCCESS;
|
---|
7370 | }
|
---|
7371 |
|
---|
7372 |
|
---|
7373 | /**
|
---|
7374 | * Skips to the end of the current data unit.
|
---|
7375 | *
|
---|
7376 | * Since version 2 of the format, the load exec callback have to explicitly call
|
---|
7377 | * this API if it wish to be lazy for some reason. This is because there seldom
|
---|
7378 | * is a good reason to not read your entire data unit and it was hiding bugs.
|
---|
7379 | *
|
---|
7380 | * @returns VBox status code.
|
---|
7381 | * @param pSSM The saved state handle.
|
---|
7382 | */
|
---|
7383 | VMMR3DECL(int) SSMR3SkipToEndOfUnit(PSSMHANDLE pSSM)
|
---|
7384 | {
|
---|
7385 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
7386 | SSM_CHECK_CANCELLED_RET(pSSM);
|
---|
7387 | if (pSSM->u.Read.uFmtVerMajor >= 2)
|
---|
7388 | {
|
---|
7389 | /*
|
---|
7390 | * Read until we the end of data condition is raised.
|
---|
7391 | */
|
---|
7392 | pSSM->u.Read.cbDataBuffer = 0;
|
---|
7393 | pSSM->u.Read.offDataBuffer = 0;
|
---|
7394 | if (!pSSM->u.Read.fEndOfData)
|
---|
7395 | {
|
---|
7396 | do
|
---|
7397 | {
|
---|
7398 | /* read the rest of the current record */
|
---|
7399 | while (pSSM->u.Read.cbRecLeft)
|
---|
7400 | {
|
---|
7401 | uint8_t abBuf[8192];
|
---|
7402 | uint32_t cbToRead = RT_MIN(pSSM->u.Read.cbRecLeft, sizeof(abBuf));
|
---|
7403 | int rc = ssmR3DataReadV2Raw(pSSM, abBuf, cbToRead);
|
---|
7404 | if (RT_FAILURE(rc))
|
---|
7405 | return pSSM->rc = rc;
|
---|
7406 | pSSM->u.Read.cbRecLeft -= cbToRead;
|
---|
7407 | }
|
---|
7408 |
|
---|
7409 | /* read the next header. */
|
---|
7410 | int rc = ssmR3DataReadRecHdrV2(pSSM);
|
---|
7411 | if (RT_FAILURE(rc))
|
---|
7412 | return pSSM->rc = rc;
|
---|
7413 | } while (!pSSM->u.Read.fEndOfData);
|
---|
7414 | }
|
---|
7415 | }
|
---|
7416 | /* else: Doesn't matter for the version 1 loading. */
|
---|
7417 |
|
---|
7418 | return VINF_SUCCESS;
|
---|
7419 | }
|
---|
7420 |
|
---|
7421 |
|
---|
7422 | /**
|
---|
7423 | * Calculate the checksum of a file portion.
|
---|
7424 | *
|
---|
7425 | * @returns VBox status.
|
---|
7426 | * @param pStrm The stream handle
|
---|
7427 | * @param off Where to start checksumming.
|
---|
7428 | * @param cb How much to checksum.
|
---|
7429 | * @param pu32CRC Where to store the calculated checksum.
|
---|
7430 | */
|
---|
7431 | static int ssmR3CalcChecksum(PSSMSTRM pStrm, uint64_t off, uint64_t cb, uint32_t *pu32CRC)
|
---|
7432 | {
|
---|
7433 | /*
|
---|
7434 | * Allocate a buffer.
|
---|
7435 | */
|
---|
7436 | const size_t cbBuf = _32K;
|
---|
7437 | void *pvBuf = RTMemTmpAlloc(cbBuf);
|
---|
7438 | if (!pvBuf)
|
---|
7439 | return VERR_NO_TMP_MEMORY;
|
---|
7440 |
|
---|
7441 | /*
|
---|
7442 | * Loop reading and calculating CRC32.
|
---|
7443 | */
|
---|
7444 | int rc = VINF_SUCCESS;
|
---|
7445 | uint32_t u32CRC = RTCrc32Start();
|
---|
7446 | while (cb > 0)
|
---|
7447 | {
|
---|
7448 | /* read chunk */
|
---|
7449 | size_t cbToRead = cbBuf;
|
---|
7450 | if (cb < cbBuf)
|
---|
7451 | cbToRead = cb;
|
---|
7452 | rc = ssmR3StrmPeekAt(pStrm, off, pvBuf, cbToRead, NULL);
|
---|
7453 | if (RT_FAILURE(rc))
|
---|
7454 | {
|
---|
7455 | AssertMsgFailed(("Failed with rc=%Rrc while calculating crc.\n", rc));
|
---|
7456 | RTMemTmpFree(pvBuf);
|
---|
7457 | return rc;
|
---|
7458 | }
|
---|
7459 |
|
---|
7460 | /* advance */
|
---|
7461 | cb -= cbToRead;
|
---|
7462 | off += cbToRead;
|
---|
7463 |
|
---|
7464 | /* calc crc32. */
|
---|
7465 | u32CRC = RTCrc32Process(u32CRC, pvBuf, cbToRead);
|
---|
7466 | }
|
---|
7467 | RTMemTmpFree(pvBuf);
|
---|
7468 |
|
---|
7469 | /* store the calculated crc */
|
---|
7470 | u32CRC = RTCrc32Finish(u32CRC);
|
---|
7471 | Log(("SSM: u32CRC=0x%08x\n", u32CRC));
|
---|
7472 | *pu32CRC = u32CRC;
|
---|
7473 |
|
---|
7474 | return VINF_SUCCESS;
|
---|
7475 | }
|
---|
7476 |
|
---|
7477 |
|
---|
7478 | /**
|
---|
7479 | * Validates a version 2 footer.
|
---|
7480 | *
|
---|
7481 | * @returns VBox status code.
|
---|
7482 | *
|
---|
7483 | * @param pFooter The footer.
|
---|
7484 | * @param offFooter The stream offset of the footer.
|
---|
7485 | * @param cDirEntries The number of directory entries. UINT32_MAX if
|
---|
7486 | * unknown.
|
---|
7487 | * @param fStreamCrc32 Whether the stream is checksummed using CRC-32.
|
---|
7488 | * @param u32StreamCRC The stream checksum.
|
---|
7489 | */
|
---|
7490 | static int ssmR3ValidateFooter(PSSMFILEFTR pFooter, uint64_t offFooter, uint32_t cDirEntries, bool fStreamCrc32, uint32_t u32StreamCRC)
|
---|
7491 | {
|
---|
7492 | if (memcmp(pFooter->szMagic, SSMFILEFTR_MAGIC, sizeof(pFooter->szMagic)))
|
---|
7493 | {
|
---|
7494 | LogRel(("SSM: Bad footer magic: %.*Rhxs\n", sizeof(pFooter->szMagic), &pFooter->szMagic[0]));
|
---|
7495 | return VERR_SSM_INTEGRITY_FOOTER;
|
---|
7496 | }
|
---|
7497 | SSM_CHECK_CRC32_RET(pFooter, sizeof(*pFooter), ("Footer CRC mismatch: %08x, correct is %08x\n", u32CRC, u32ActualCRC));
|
---|
7498 | if (pFooter->offStream != offFooter)
|
---|
7499 | {
|
---|
7500 | LogRel(("SSM: SSMFILEFTR::offStream is wrong: %llx, expected %llx\n", pFooter->offStream, offFooter));
|
---|
7501 | return VERR_SSM_INTEGRITY_FOOTER;
|
---|
7502 | }
|
---|
7503 | if (pFooter->u32Reserved)
|
---|
7504 | {
|
---|
7505 | LogRel(("SSM: Reserved footer field isn't zero: %08x\n", pFooter->u32Reserved));
|
---|
7506 | return VERR_SSM_INTEGRITY_FOOTER;
|
---|
7507 | }
|
---|
7508 | if (cDirEntries != UINT32_MAX)
|
---|
7509 | AssertLogRelMsgReturn(pFooter->cDirEntries == cDirEntries,
|
---|
7510 | ("Footer: cDirEntries=%#x, expected %#x\n", pFooter->cDirEntries, cDirEntries),
|
---|
7511 | VERR_SSM_INTEGRITY_FOOTER);
|
---|
7512 | else
|
---|
7513 | AssertLogRelMsgReturn(pFooter->cDirEntries < _64K,
|
---|
7514 | ("Footer: cDirEntries=%#x\n", pFooter->cDirEntries),
|
---|
7515 | VERR_SSM_INTEGRITY_FOOTER);
|
---|
7516 | if ( !fStreamCrc32
|
---|
7517 | && pFooter->u32StreamCRC)
|
---|
7518 | {
|
---|
7519 | LogRel(("SSM: u32StreamCRC field isn't zero, but header says stream checksumming is disabled.\n"));
|
---|
7520 | return VERR_SSM_INTEGRITY_FOOTER;
|
---|
7521 | }
|
---|
7522 | if ( fStreamCrc32
|
---|
7523 | && pFooter->u32StreamCRC != u32StreamCRC)
|
---|
7524 | {
|
---|
7525 | LogRel(("SSM: Bad stream CRC: %#x, expected %#x.\n", pFooter->u32StreamCRC, u32StreamCRC));
|
---|
7526 | return VERR_SSM_INTEGRITY_CRC;
|
---|
7527 | }
|
---|
7528 | return VINF_SUCCESS;
|
---|
7529 | }
|
---|
7530 |
|
---|
7531 |
|
---|
7532 | /**
|
---|
7533 | * Validates the header information stored in the handle.
|
---|
7534 | *
|
---|
7535 | * @returns VBox status code.
|
---|
7536 | *
|
---|
7537 | * @param pSSM The handle.
|
---|
7538 | * @param fHaveHostBits Set if the host bits field is valid.
|
---|
7539 | * @param fHaveVersion Set if we have a version.
|
---|
7540 | */
|
---|
7541 | static int ssmR3ValidateHeaderInfo(PSSMHANDLE pSSM, bool fHaveHostBits, bool fHaveVersion)
|
---|
7542 | {
|
---|
7543 | Assert(pSSM->u.Read.cbFileHdr < 256 && pSSM->u.Read.cbFileHdr > 32);
|
---|
7544 | Assert(pSSM->u.Read.uFmtVerMajor == 1 || pSSM->u.Read.uFmtVerMajor == 2);
|
---|
7545 | Assert(pSSM->u.Read.uFmtVerMinor <= 2);
|
---|
7546 |
|
---|
7547 | if (fHaveVersion)
|
---|
7548 | {
|
---|
7549 | if ( pSSM->u.Read.u16VerMajor == 0
|
---|
7550 | || pSSM->u.Read.u16VerMajor > 1000
|
---|
7551 | || pSSM->u.Read.u16VerMinor > 1000
|
---|
7552 | || pSSM->u.Read.u32VerBuild > _1M
|
---|
7553 | || pSSM->u.Read.u32SvnRev == 0
|
---|
7554 | || pSSM->u.Read.u32SvnRev > 10000000 /*100M*/)
|
---|
7555 | {
|
---|
7556 | LogRel(("SSM: Incorrect version values: %u.%u.%u.r%u\n",
|
---|
7557 | pSSM->u.Read.u16VerMajor, pSSM->u.Read.u16VerMinor, pSSM->u.Read.u32VerBuild, pSSM->u.Read.u32SvnRev));
|
---|
7558 | return VERR_SSM_INTEGRITY_VBOX_VERSION;
|
---|
7559 | }
|
---|
7560 | }
|
---|
7561 | else
|
---|
7562 | AssertLogRelReturn( pSSM->u.Read.u16VerMajor == 0
|
---|
7563 | && pSSM->u.Read.u16VerMinor == 0
|
---|
7564 | && pSSM->u.Read.u32VerBuild == 0
|
---|
7565 | && pSSM->u.Read.u32SvnRev == 0,
|
---|
7566 | VERR_SSM_INTEGRITY_VBOX_VERSION);
|
---|
7567 |
|
---|
7568 | if (fHaveHostBits)
|
---|
7569 | {
|
---|
7570 | if ( pSSM->u.Read.cHostBits != 32
|
---|
7571 | && pSSM->u.Read.cHostBits != 64)
|
---|
7572 | {
|
---|
7573 | LogRel(("SSM: Incorrect cHostBits value: %u\n", pSSM->u.Read.cHostBits));
|
---|
7574 | return VERR_SSM_INTEGRITY_HEADER;
|
---|
7575 | }
|
---|
7576 | }
|
---|
7577 | else
|
---|
7578 | AssertLogRelReturn(pSSM->u.Read.cHostBits == 0, VERR_SSM_INTEGRITY_HEADER);
|
---|
7579 |
|
---|
7580 | if ( pSSM->u.Read.cbGCPhys != sizeof(uint32_t)
|
---|
7581 | && pSSM->u.Read.cbGCPhys != sizeof(uint64_t))
|
---|
7582 | {
|
---|
7583 | LogRel(("SSM: Incorrect cbGCPhys value: %d\n", pSSM->u.Read.cbGCPhys));
|
---|
7584 | return VERR_SSM_INTEGRITY_HEADER;
|
---|
7585 | }
|
---|
7586 | if ( pSSM->u.Read.cbGCPtr != sizeof(uint32_t)
|
---|
7587 | && pSSM->u.Read.cbGCPtr != sizeof(uint64_t))
|
---|
7588 | {
|
---|
7589 | LogRel(("SSM: Incorrect cbGCPtr value: %d\n", pSSM->u.Read.cbGCPtr));
|
---|
7590 | return VERR_SSM_INTEGRITY_HEADER;
|
---|
7591 | }
|
---|
7592 |
|
---|
7593 | return VINF_SUCCESS;
|
---|
7594 | }
|
---|
7595 |
|
---|
7596 |
|
---|
7597 | /**
|
---|
7598 | * Reads the header, detects the format version and performs integrity
|
---|
7599 | * validations.
|
---|
7600 | *
|
---|
7601 | * @returns VBox status.
|
---|
7602 | * @param pSSM The saved state handle. A number of field will
|
---|
7603 | * be updated, mostly header related information.
|
---|
7604 | * fLiveSave is also set if appropriate.
|
---|
7605 | * @param fChecksumIt Whether to checksum the file or not. This will
|
---|
7606 | * be ignored if it the stream isn't a file.
|
---|
7607 | * @param fChecksumOnRead Whether to validate the checksum while reading
|
---|
7608 | * the stream instead of up front. If not possible,
|
---|
7609 | * verify the checksum up front.
|
---|
7610 | * @param pHdr Where to store the file header.
|
---|
7611 | */
|
---|
7612 | static int ssmR3HeaderAndValidate(PSSMHANDLE pSSM, bool fChecksumIt, bool fChecksumOnRead)
|
---|
7613 | {
|
---|
7614 | /*
|
---|
7615 | * Read and check the header magic.
|
---|
7616 | */
|
---|
7617 | union
|
---|
7618 | {
|
---|
7619 | SSMFILEHDR v2_0;
|
---|
7620 | SSMFILEHDRV12 v1_2;
|
---|
7621 | SSMFILEHDRV11 v1_1;
|
---|
7622 | } uHdr;
|
---|
7623 | int rc = ssmR3StrmRead(&pSSM->Strm, &uHdr, sizeof(uHdr.v2_0.szMagic));
|
---|
7624 | if (RT_FAILURE(rc))
|
---|
7625 | {
|
---|
7626 | LogRel(("SSM: Failed to read file magic header. rc=%Rrc\n", rc));
|
---|
7627 | return rc;
|
---|
7628 | }
|
---|
7629 | if (memcmp(uHdr.v2_0.szMagic, SSMFILEHDR_MAGIC_BASE, sizeof(SSMFILEHDR_MAGIC_BASE) - 1))
|
---|
7630 | {
|
---|
7631 | Log(("SSM: Not a saved state file. magic=%.*s\n", sizeof(uHdr.v2_0.szMagic) - 1, uHdr.v2_0.szMagic));
|
---|
7632 | return VERR_SSM_INTEGRITY_MAGIC;
|
---|
7633 | }
|
---|
7634 |
|
---|
7635 | /*
|
---|
7636 | * Find the header size and read the rest.
|
---|
7637 | */
|
---|
7638 | static const struct
|
---|
7639 | {
|
---|
7640 | char szMagic[sizeof(SSMFILEHDR_MAGIC_V2_0)];
|
---|
7641 | uint32_t cbHdr;
|
---|
7642 | unsigned uFmtVerMajor;
|
---|
7643 | unsigned uFmtVerMinor;
|
---|
7644 | } s_aVers[] =
|
---|
7645 | {
|
---|
7646 | { SSMFILEHDR_MAGIC_V2_0, sizeof(SSMFILEHDR), 2, 0 },
|
---|
7647 | { SSMFILEHDR_MAGIC_V1_2, sizeof(SSMFILEHDRV12), 1, 2 },
|
---|
7648 | { SSMFILEHDR_MAGIC_V1_1, sizeof(SSMFILEHDRV11), 1, 1 },
|
---|
7649 | };
|
---|
7650 | int iVer = RT_ELEMENTS(s_aVers);
|
---|
7651 | while (iVer-- > 0)
|
---|
7652 | if (!memcmp(uHdr.v2_0.szMagic, s_aVers[iVer].szMagic, sizeof(uHdr.v2_0.szMagic)))
|
---|
7653 | break;
|
---|
7654 | if (iVer < 0)
|
---|
7655 | {
|
---|
7656 | Log(("SSM: Unknown file format version. magic=%.*s\n", sizeof(uHdr.v2_0.szMagic) - 1, uHdr.v2_0.szMagic));
|
---|
7657 | return VERR_SSM_INTEGRITY_VERSION;
|
---|
7658 | }
|
---|
7659 | pSSM->u.Read.uFmtVerMajor = s_aVers[iVer].uFmtVerMajor;
|
---|
7660 | pSSM->u.Read.uFmtVerMinor = s_aVers[iVer].uFmtVerMinor;
|
---|
7661 | pSSM->u.Read.cbFileHdr = s_aVers[iVer].cbHdr;
|
---|
7662 |
|
---|
7663 | rc = ssmR3StrmRead(&pSSM->Strm, (uint8_t *)&uHdr + sizeof(uHdr.v2_0.szMagic), pSSM->u.Read.cbFileHdr - sizeof(uHdr.v2_0.szMagic));
|
---|
7664 | if (RT_FAILURE(rc))
|
---|
7665 | {
|
---|
7666 | LogRel(("SSM: Failed to read the file header. rc=%Rrc\n", rc));
|
---|
7667 | return rc;
|
---|
7668 | }
|
---|
7669 |
|
---|
7670 | /*
|
---|
7671 | * Make version specific adjustments.
|
---|
7672 | */
|
---|
7673 | if (pSSM->u.Read.uFmtVerMajor >= 2)
|
---|
7674 | {
|
---|
7675 | /*
|
---|
7676 | * Version 2.0 and later.
|
---|
7677 | */
|
---|
7678 | if (pSSM->u.Read.uFmtVerMinor == 0)
|
---|
7679 | {
|
---|
7680 | /* validate the header. */
|
---|
7681 | SSM_CHECK_CRC32_RET(&uHdr.v2_0, sizeof(uHdr.v2_0), ("Header CRC mismatch: %08x, correct is %08x\n", u32CRC, u32ActualCRC));
|
---|
7682 | if (uHdr.v2_0.u8Reserved)
|
---|
7683 | {
|
---|
7684 | LogRel(("SSM: Reserved header field isn't zero: %02x\n", uHdr.v2_0.u8Reserved));
|
---|
7685 | return VERR_SSM_INTEGRITY;
|
---|
7686 | }
|
---|
7687 | if (uHdr.v2_0.fFlags & ~(SSMFILEHDR_FLAGS_STREAM_CRC32 | SSMFILEHDR_FLAGS_STREAM_LIVE_SAVE))
|
---|
7688 | {
|
---|
7689 | LogRel(("SSM: Unknown header flags: %08x\n", uHdr.v2_0.fFlags));
|
---|
7690 | return VERR_SSM_INTEGRITY;
|
---|
7691 | }
|
---|
7692 | if ( uHdr.v2_0.cbMaxDecompr > sizeof(pSSM->u.Read.abDataBuffer)
|
---|
7693 | || uHdr.v2_0.cbMaxDecompr < _1K
|
---|
7694 | || (uHdr.v2_0.cbMaxDecompr & 0xff) != 0)
|
---|
7695 | {
|
---|
7696 | LogRel(("SSM: The cbMaxDecompr header field is out of range: %#x\n", uHdr.v2_0.cbMaxDecompr));
|
---|
7697 | return VERR_SSM_INTEGRITY;
|
---|
7698 | }
|
---|
7699 |
|
---|
7700 | /* set the header info. */
|
---|
7701 | pSSM->u.Read.cHostBits = uHdr.v2_0.cHostBits;
|
---|
7702 | pSSM->u.Read.u16VerMajor = uHdr.v2_0.u16VerMajor;
|
---|
7703 | pSSM->u.Read.u16VerMinor = uHdr.v2_0.u16VerMinor;
|
---|
7704 | pSSM->u.Read.u32VerBuild = uHdr.v2_0.u32VerBuild;
|
---|
7705 | pSSM->u.Read.u32SvnRev = uHdr.v2_0.u32SvnRev;
|
---|
7706 | pSSM->u.Read.cbGCPhys = uHdr.v2_0.cbGCPhys;
|
---|
7707 | pSSM->u.Read.cbGCPtr = uHdr.v2_0.cbGCPtr;
|
---|
7708 | pSSM->u.Read.fFixedGCPtrSize= true;
|
---|
7709 | pSSM->u.Read.fStreamCrc32 = !!(uHdr.v2_0.fFlags & SSMFILEHDR_FLAGS_STREAM_CRC32);
|
---|
7710 | pSSM->fLiveSave = !!(uHdr.v2_0.fFlags & SSMFILEHDR_FLAGS_STREAM_LIVE_SAVE);
|
---|
7711 | }
|
---|
7712 | else
|
---|
7713 | AssertFailedReturn(VERR_SSM_IPE_2);
|
---|
7714 | if (!pSSM->u.Read.fStreamCrc32)
|
---|
7715 | ssmR3StrmDisableChecksumming(&pSSM->Strm);
|
---|
7716 |
|
---|
7717 | /*
|
---|
7718 | * Read and validate the footer if it's a file.
|
---|
7719 | */
|
---|
7720 | if (ssmR3StrmIsFile(&pSSM->Strm))
|
---|
7721 | {
|
---|
7722 | SSMFILEFTR Footer;
|
---|
7723 | uint64_t offFooter;
|
---|
7724 | rc = ssmR3StrmPeekAt(&pSSM->Strm, -(RTFOFF)sizeof(SSMFILEFTR), &Footer, sizeof(Footer), &offFooter);
|
---|
7725 | AssertLogRelRCReturn(rc, rc);
|
---|
7726 |
|
---|
7727 | rc = ssmR3ValidateFooter(&Footer, offFooter, UINT32_MAX, pSSM->u.Read.fStreamCrc32, Footer.u32StreamCRC);
|
---|
7728 | if (RT_FAILURE(rc))
|
---|
7729 | return rc;
|
---|
7730 |
|
---|
7731 | pSSM->u.Read.cbLoadFile = offFooter + sizeof(Footer);
|
---|
7732 | pSSM->u.Read.u32LoadCRC = Footer.u32StreamCRC;
|
---|
7733 | }
|
---|
7734 | else
|
---|
7735 | {
|
---|
7736 | pSSM->u.Read.cbLoadFile = UINT64_MAX;
|
---|
7737 | pSSM->u.Read.u32LoadCRC = 0;
|
---|
7738 | }
|
---|
7739 |
|
---|
7740 | /*
|
---|
7741 | * Validate the header info we've set in the handle.
|
---|
7742 | */
|
---|
7743 | rc = ssmR3ValidateHeaderInfo(pSSM, true /*fHaveHostBits*/, true /*fHaveVersion*/);
|
---|
7744 | if (RT_FAILURE(rc))
|
---|
7745 | return rc;
|
---|
7746 |
|
---|
7747 | /*
|
---|
7748 | * Check the checksum if that's called for and possible.
|
---|
7749 | */
|
---|
7750 | if ( pSSM->u.Read.fStreamCrc32
|
---|
7751 | && fChecksumIt
|
---|
7752 | && !fChecksumOnRead
|
---|
7753 | && ssmR3StrmIsFile(&pSSM->Strm))
|
---|
7754 | {
|
---|
7755 | uint32_t u32CRC;
|
---|
7756 | rc = ssmR3CalcChecksum(&pSSM->Strm, 0, pSSM->u.Read.cbLoadFile - sizeof(SSMFILEFTR), &u32CRC);
|
---|
7757 | if (RT_FAILURE(rc))
|
---|
7758 | return rc;
|
---|
7759 | if (u32CRC != pSSM->u.Read.u32LoadCRC)
|
---|
7760 | {
|
---|
7761 | LogRel(("SSM: Invalid CRC! Calculated %#010x, in footer %#010x\n", u32CRC, pSSM->u.Read.u32LoadCRC));
|
---|
7762 | return VERR_SSM_INTEGRITY_CRC;
|
---|
7763 | }
|
---|
7764 | }
|
---|
7765 | }
|
---|
7766 | else
|
---|
7767 | {
|
---|
7768 | /*
|
---|
7769 | * Version 1.x of the format.
|
---|
7770 | */
|
---|
7771 | bool fHaveHostBits = true;
|
---|
7772 | bool fHaveVersion = false;
|
---|
7773 | RTUUID MachineUuidFromHdr;
|
---|
7774 |
|
---|
7775 | ssmR3StrmDisableChecksumming(&pSSM->Strm);
|
---|
7776 | if (pSSM->u.Read.uFmtVerMinor == 1)
|
---|
7777 | {
|
---|
7778 | pSSM->u.Read.cHostBits = 0; /* unknown */
|
---|
7779 | pSSM->u.Read.u16VerMajor = 0;
|
---|
7780 | pSSM->u.Read.u16VerMinor = 0;
|
---|
7781 | pSSM->u.Read.u32VerBuild = 0;
|
---|
7782 | pSSM->u.Read.u32SvnRev = 0;
|
---|
7783 | pSSM->u.Read.cbLoadFile = uHdr.v1_1.cbFile;
|
---|
7784 | pSSM->u.Read.u32LoadCRC = uHdr.v1_1.u32CRC;
|
---|
7785 | pSSM->u.Read.cbGCPhys = sizeof(RTGCPHYS);
|
---|
7786 | pSSM->u.Read.cbGCPtr = sizeof(RTGCPTR);
|
---|
7787 | pSSM->u.Read.fFixedGCPtrSize = false; /* settable */
|
---|
7788 | pSSM->u.Read.fStreamCrc32 = false;
|
---|
7789 |
|
---|
7790 | MachineUuidFromHdr = uHdr.v1_1.MachineUuid;
|
---|
7791 | fHaveHostBits = false;
|
---|
7792 | }
|
---|
7793 | else if (pSSM->u.Read.uFmtVerMinor == 2)
|
---|
7794 | {
|
---|
7795 | pSSM->u.Read.cHostBits = uHdr.v1_2.cHostBits;
|
---|
7796 | pSSM->u.Read.u16VerMajor = uHdr.v1_2.u16VerMajor;
|
---|
7797 | pSSM->u.Read.u16VerMinor = uHdr.v1_2.u16VerMinor;
|
---|
7798 | pSSM->u.Read.u32VerBuild = uHdr.v1_2.u32VerBuild;
|
---|
7799 | pSSM->u.Read.u32SvnRev = uHdr.v1_2.u32SvnRev;
|
---|
7800 | pSSM->u.Read.cbLoadFile = uHdr.v1_2.cbFile;
|
---|
7801 | pSSM->u.Read.u32LoadCRC = uHdr.v1_2.u32CRC;
|
---|
7802 | pSSM->u.Read.cbGCPhys = uHdr.v1_2.cbGCPhys;
|
---|
7803 | pSSM->u.Read.cbGCPtr = uHdr.v1_2.cbGCPtr;
|
---|
7804 | pSSM->u.Read.fFixedGCPtrSize = true;
|
---|
7805 | pSSM->u.Read.fStreamCrc32 = false;
|
---|
7806 |
|
---|
7807 | MachineUuidFromHdr = uHdr.v1_2.MachineUuid;
|
---|
7808 | fHaveVersion = true;
|
---|
7809 | }
|
---|
7810 | else
|
---|
7811 | AssertFailedReturn(VERR_SSM_IPE_1);
|
---|
7812 |
|
---|
7813 | /*
|
---|
7814 | * The MachineUuid must be NULL (was never used).
|
---|
7815 | */
|
---|
7816 | if (!RTUuidIsNull(&MachineUuidFromHdr))
|
---|
7817 | {
|
---|
7818 | LogRel(("SSM: The UUID of the saved state doesn't match the running VM.\n"));
|
---|
7819 | return VERR_SMM_INTEGRITY_MACHINE;
|
---|
7820 | }
|
---|
7821 |
|
---|
7822 | /*
|
---|
7823 | * Verify the file size.
|
---|
7824 | */
|
---|
7825 | uint64_t cbFile = ssmR3StrmGetSize(&pSSM->Strm);
|
---|
7826 | if (cbFile != pSSM->u.Read.cbLoadFile)
|
---|
7827 | {
|
---|
7828 | LogRel(("SSM: File size mismatch. hdr.cbFile=%lld actual %lld\n", pSSM->u.Read.cbLoadFile, cbFile));
|
---|
7829 | return VERR_SSM_INTEGRITY_SIZE;
|
---|
7830 | }
|
---|
7831 |
|
---|
7832 | /*
|
---|
7833 | * Validate the header info we've set in the handle.
|
---|
7834 | */
|
---|
7835 | rc = ssmR3ValidateHeaderInfo(pSSM, fHaveHostBits, fHaveVersion);
|
---|
7836 | if (RT_FAILURE(rc))
|
---|
7837 | return rc;
|
---|
7838 |
|
---|
7839 | /*
|
---|
7840 | * Verify the checksum if requested.
|
---|
7841 | *
|
---|
7842 | * Note! The checksum is not actually generated for the whole file,
|
---|
7843 | * this is of course a bug in the v1.x code that we cannot do
|
---|
7844 | * anything about.
|
---|
7845 | */
|
---|
7846 | if ( fChecksumIt
|
---|
7847 | || fChecksumOnRead)
|
---|
7848 | {
|
---|
7849 | uint32_t u32CRC;
|
---|
7850 | rc = ssmR3CalcChecksum(&pSSM->Strm,
|
---|
7851 | RT_OFFSETOF(SSMFILEHDRV11, u32CRC) + sizeof(uHdr.v1_1.u32CRC),
|
---|
7852 | cbFile - pSSM->u.Read.cbFileHdr,
|
---|
7853 | &u32CRC);
|
---|
7854 | if (RT_FAILURE(rc))
|
---|
7855 | return rc;
|
---|
7856 | if (u32CRC != pSSM->u.Read.u32LoadCRC)
|
---|
7857 | {
|
---|
7858 | LogRel(("SSM: Invalid CRC! Calculated %#010x, in header %#010x\n", u32CRC, pSSM->u.Read.u32LoadCRC));
|
---|
7859 | return VERR_SSM_INTEGRITY_CRC;
|
---|
7860 | }
|
---|
7861 | }
|
---|
7862 | }
|
---|
7863 |
|
---|
7864 | return VINF_SUCCESS;
|
---|
7865 | }
|
---|
7866 |
|
---|
7867 |
|
---|
7868 | /**
|
---|
7869 | * Open a saved state for reading.
|
---|
7870 | *
|
---|
7871 | * The file will be positioned at the first data unit upon successful return.
|
---|
7872 | *
|
---|
7873 | * @returns VBox status code.
|
---|
7874 | *
|
---|
7875 | * @param pVM Pointer to the VM.
|
---|
7876 | * @param pszFilename The filename. NULL if pStreamOps is used.
|
---|
7877 | * @param pStreamOps The stream method table. NULL if pszFilename is
|
---|
7878 | * used.
|
---|
7879 | * @param pvUser The user argument to the stream methods.
|
---|
7880 | * @param fChecksumIt Check the checksum for the entire file.
|
---|
7881 | * @param fChecksumOnRead Whether to validate the checksum while reading
|
---|
7882 | * the stream instead of up front. If not possible,
|
---|
7883 | * verify the checksum up front.
|
---|
7884 | * @param pSSM Pointer to the handle structure. This will be
|
---|
7885 | * completely initialized on success.
|
---|
7886 | * @param cBuffers The number of stream buffers.
|
---|
7887 | */
|
---|
7888 | static int ssmR3OpenFile(PVM pVM, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvUser,
|
---|
7889 | bool fChecksumIt, bool fChecksumOnRead, uint32_t cBuffers, PSSMHANDLE pSSM)
|
---|
7890 | {
|
---|
7891 | /*
|
---|
7892 | * Initialize the handle.
|
---|
7893 | */
|
---|
7894 | pSSM->pVM = pVM;
|
---|
7895 | pSSM->enmOp = SSMSTATE_INVALID;
|
---|
7896 | pSSM->enmAfter = SSMAFTER_INVALID;
|
---|
7897 | pSSM->fCancelled = SSMHANDLE_OK;
|
---|
7898 | pSSM->rc = VINF_SUCCESS;
|
---|
7899 | pSSM->cbUnitLeftV1 = 0;
|
---|
7900 | pSSM->offUnit = UINT64_MAX;
|
---|
7901 | pSSM->offUnitUser = UINT64_MAX;
|
---|
7902 | pSSM->fLiveSave = false;
|
---|
7903 | pSSM->pfnProgress = NULL;
|
---|
7904 | pSSM->pvUser = NULL;
|
---|
7905 | pSSM->uPercent = 0;
|
---|
7906 | pSSM->offEstProgress = 0;
|
---|
7907 | pSSM->cbEstTotal = 0;
|
---|
7908 | pSSM->offEst = 0;
|
---|
7909 | pSSM->offEstUnitEnd = 0;
|
---|
7910 | pSSM->uPercentLive = 0;
|
---|
7911 | pSSM->uPercentPrepare = 5;
|
---|
7912 | pSSM->uPercentDone = 2;
|
---|
7913 | pSSM->uReportedLivePercent = 0;
|
---|
7914 | pSSM->pszFilename = pszFilename;
|
---|
7915 |
|
---|
7916 | pSSM->u.Read.pZipDecompV1 = NULL;
|
---|
7917 | pSSM->u.Read.uFmtVerMajor = UINT32_MAX;
|
---|
7918 | pSSM->u.Read.uFmtVerMinor = UINT32_MAX;
|
---|
7919 | pSSM->u.Read.cbFileHdr = UINT32_MAX;
|
---|
7920 | pSSM->u.Read.cbGCPhys = UINT8_MAX;
|
---|
7921 | pSSM->u.Read.cbGCPtr = UINT8_MAX;
|
---|
7922 | pSSM->u.Read.fFixedGCPtrSize= false;
|
---|
7923 | pSSM->u.Read.fIsHostMsc32 = SSM_HOST_IS_MSC_32;
|
---|
7924 | RT_ZERO(pSSM->u.Read.szHostOSAndArch);
|
---|
7925 | pSSM->u.Read.u16VerMajor = UINT16_MAX;
|
---|
7926 | pSSM->u.Read.u16VerMinor = UINT16_MAX;
|
---|
7927 | pSSM->u.Read.u32VerBuild = UINT32_MAX;
|
---|
7928 | pSSM->u.Read.u32SvnRev = UINT32_MAX;
|
---|
7929 | pSSM->u.Read.cHostBits = UINT8_MAX;
|
---|
7930 | pSSM->u.Read.cbLoadFile = UINT64_MAX;
|
---|
7931 |
|
---|
7932 | pSSM->u.Read.cbRecLeft = 0;
|
---|
7933 | pSSM->u.Read.cbDataBuffer = 0;
|
---|
7934 | pSSM->u.Read.offDataBuffer = 0;
|
---|
7935 | pSSM->u.Read.fEndOfData = 0;
|
---|
7936 | pSSM->u.Read.u8TypeAndFlags = 0;
|
---|
7937 |
|
---|
7938 | pSSM->u.Read.pCurUnit = NULL;
|
---|
7939 | pSSM->u.Read.uCurUnitVer = UINT32_MAX;
|
---|
7940 | pSSM->u.Read.uCurUnitPass = 0;
|
---|
7941 | pSSM->u.Read.fHaveSetError = false;
|
---|
7942 |
|
---|
7943 | /*
|
---|
7944 | * Try open and validate the file.
|
---|
7945 | */
|
---|
7946 | int rc;
|
---|
7947 | if (pStreamOps)
|
---|
7948 | rc = ssmR3StrmInit(&pSSM->Strm, pStreamOps, pvUser, false /*fWrite*/, fChecksumOnRead, cBuffers);
|
---|
7949 | else
|
---|
7950 | rc = ssmR3StrmOpenFile(&pSSM->Strm, pszFilename, false /*fWrite*/, fChecksumOnRead, cBuffers);
|
---|
7951 | if (RT_SUCCESS(rc))
|
---|
7952 | {
|
---|
7953 | rc = ssmR3HeaderAndValidate(pSSM, fChecksumIt, fChecksumOnRead);
|
---|
7954 | if (RT_SUCCESS(rc))
|
---|
7955 | return rc;
|
---|
7956 |
|
---|
7957 | /* failure path */
|
---|
7958 | ssmR3StrmClose(&pSSM->Strm, pSSM->rc == VERR_SSM_CANCELLED);
|
---|
7959 | }
|
---|
7960 | else
|
---|
7961 | Log(("SSM: Failed to open save state file '%s', rc=%Rrc.\n", pszFilename, rc));
|
---|
7962 | return rc;
|
---|
7963 | }
|
---|
7964 |
|
---|
7965 |
|
---|
7966 | /**
|
---|
7967 | * Verifies the directory.
|
---|
7968 | *
|
---|
7969 | * @returns VBox status code.
|
---|
7970 | *
|
---|
7971 | * @param pDir The full directory.
|
---|
7972 | * @param cbDir The size of the directory.
|
---|
7973 | * @param offDir The directory stream offset.
|
---|
7974 | * @param cDirEntries The directory entry count from the footer.
|
---|
7975 | * @param cbHdr The header size.
|
---|
7976 | * @param uSvnRev The SVN revision that saved the state. Bug detection.
|
---|
7977 | */
|
---|
7978 | static int ssmR3ValidateDirectory(PSSMFILEDIR pDir, size_t cbDir, uint64_t offDir, uint32_t cDirEntries,
|
---|
7979 | uint32_t cbHdr, uint32_t uSvnRev)
|
---|
7980 | {
|
---|
7981 | AssertLogRelReturn(!memcmp(pDir->szMagic, SSMFILEDIR_MAGIC, sizeof(pDir->szMagic)), VERR_SSM_INTEGRITY_DIR_MAGIC);
|
---|
7982 | SSM_CHECK_CRC32_RET(pDir, cbDir, ("Bad directory CRC: %08x, actual %08x\n", u32CRC, u32ActualCRC));
|
---|
7983 | AssertLogRelMsgReturn(pDir->cEntries == cDirEntries,
|
---|
7984 | ("Bad directory entry count: %#x, expected %#x (from the footer)\n", pDir->cEntries, cDirEntries),
|
---|
7985 | VERR_SSM_INTEGRITY_DIR);
|
---|
7986 | AssertLogRelReturn(RT_UOFFSETOF(SSMFILEDIR, aEntries[pDir->cEntries]) == cbDir, VERR_SSM_INTEGRITY_DIR);
|
---|
7987 |
|
---|
7988 | for (uint32_t i = 0; i < pDir->cEntries; i++)
|
---|
7989 | {
|
---|
7990 | AssertLogRelMsgReturn( ( pDir->aEntries[i].off >= cbHdr
|
---|
7991 | && pDir->aEntries[i].off < offDir)
|
---|
7992 | || ( pDir->aEntries[i].off == 0 /* bug in unreleased code */
|
---|
7993 | && uSvnRev < 53365),
|
---|
7994 | ("off=%#llx cbHdr=%#x offDir=%#llx\n", pDir->aEntries[i].off, cbHdr, offDir),
|
---|
7995 | VERR_SSM_INTEGRITY_DIR);
|
---|
7996 | }
|
---|
7997 | return VINF_SUCCESS;
|
---|
7998 | }
|
---|
7999 |
|
---|
8000 | #ifndef SSM_STANDALONE
|
---|
8001 |
|
---|
8002 | /**
|
---|
8003 | * Find a data unit by name.
|
---|
8004 | *
|
---|
8005 | * @returns Pointer to the unit.
|
---|
8006 | * @returns NULL if not found.
|
---|
8007 | *
|
---|
8008 | * @param pVM Pointer to the VM.
|
---|
8009 | * @param pszName Data unit name.
|
---|
8010 | * @param uInstance The data unit instance id.
|
---|
8011 | */
|
---|
8012 | static PSSMUNIT ssmR3Find(PVM pVM, const char *pszName, uint32_t uInstance)
|
---|
8013 | {
|
---|
8014 | size_t cchName = strlen(pszName);
|
---|
8015 | PSSMUNIT pUnit = pVM->ssm.s.pHead;
|
---|
8016 | while ( pUnit
|
---|
8017 | && ( pUnit->u32Instance != uInstance
|
---|
8018 | || pUnit->cchName != cchName
|
---|
8019 | || memcmp(pUnit->szName, pszName, cchName)))
|
---|
8020 | pUnit = pUnit->pNext;
|
---|
8021 | return pUnit;
|
---|
8022 | }
|
---|
8023 |
|
---|
8024 |
|
---|
8025 | /**
|
---|
8026 | * Executes the loading of a V1.X file.
|
---|
8027 | *
|
---|
8028 | * @returns VBox status code.
|
---|
8029 | * @param pVM Pointer to the VM.
|
---|
8030 | * @param pSSM The saved state handle.
|
---|
8031 | */
|
---|
8032 | static int ssmR3LoadExecV1(PVM pVM, PSSMHANDLE pSSM)
|
---|
8033 | {
|
---|
8034 | int rc;
|
---|
8035 | char *pszName = NULL;
|
---|
8036 | size_t cchName = 0;
|
---|
8037 | pSSM->enmOp = SSMSTATE_LOAD_EXEC;
|
---|
8038 | for (;;)
|
---|
8039 | {
|
---|
8040 | /*
|
---|
8041 | * Save the current file position and read the data unit header.
|
---|
8042 | */
|
---|
8043 | uint64_t offUnit = ssmR3StrmTell(&pSSM->Strm);
|
---|
8044 | SSMFILEUNITHDRV1 UnitHdr;
|
---|
8045 | rc = ssmR3StrmRead(&pSSM->Strm, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV1, szName));
|
---|
8046 | if (RT_SUCCESS(rc))
|
---|
8047 | {
|
---|
8048 | /*
|
---|
8049 | * Check the magic and see if it's valid and whether it is a end header or not.
|
---|
8050 | */
|
---|
8051 | if (memcmp(&UnitHdr.achMagic[0], SSMFILEUNITHDR_MAGIC, sizeof(SSMFILEUNITHDR_MAGIC)))
|
---|
8052 | {
|
---|
8053 | if (!memcmp(&UnitHdr.achMagic[0], SSMFILEUNITHDR_END, sizeof(SSMFILEUNITHDR_END)))
|
---|
8054 | {
|
---|
8055 | Log(("SSM: EndOfFile: offset %#9llx size %9d\n", offUnit, UnitHdr.cbUnit));
|
---|
8056 | /* Complete the progress bar (pending 99% afterwards). */
|
---|
8057 | ssmR3ProgressByByte(pSSM, pSSM->cbEstTotal - pSSM->offEst);
|
---|
8058 | break;
|
---|
8059 | }
|
---|
8060 | LogRel(("SSM: Invalid unit magic at offset %#llx (%lld), '%.*s'!\n",
|
---|
8061 | offUnit, offUnit, sizeof(UnitHdr.achMagic) - 1, &UnitHdr.achMagic[0]));
|
---|
8062 | rc = VERR_SSM_INTEGRITY_UNIT_MAGIC;
|
---|
8063 | break;
|
---|
8064 | }
|
---|
8065 |
|
---|
8066 | /*
|
---|
8067 | * Read the name.
|
---|
8068 | * Adjust the name buffer first.
|
---|
8069 | */
|
---|
8070 | if (cchName < UnitHdr.cchName)
|
---|
8071 | {
|
---|
8072 | if (pszName)
|
---|
8073 | RTMemTmpFree(pszName);
|
---|
8074 | cchName = RT_ALIGN_Z(UnitHdr.cchName, 64);
|
---|
8075 | pszName = (char *)RTMemTmpAlloc(cchName);
|
---|
8076 | }
|
---|
8077 | if (pszName)
|
---|
8078 | {
|
---|
8079 | rc = ssmR3StrmRead(&pSSM->Strm, pszName, UnitHdr.cchName);
|
---|
8080 | if (RT_SUCCESS(rc))
|
---|
8081 | {
|
---|
8082 | if (pszName[UnitHdr.cchName - 1])
|
---|
8083 | {
|
---|
8084 | LogRel(("SSM: Unit name '%.*s' was not properly terminated.\n", UnitHdr.cchName, pszName));
|
---|
8085 | rc = VERR_SSM_INTEGRITY_UNIT;
|
---|
8086 | break;
|
---|
8087 | }
|
---|
8088 | Log(("SSM: Data unit: offset %#9llx size %9lld '%s'\n", offUnit, UnitHdr.cbUnit, pszName));
|
---|
8089 |
|
---|
8090 | /*
|
---|
8091 | * Find the data unit in our internal table.
|
---|
8092 | */
|
---|
8093 | PSSMUNIT pUnit = ssmR3Find(pVM, pszName, UnitHdr.u32Instance);
|
---|
8094 | if (pUnit)
|
---|
8095 | {
|
---|
8096 | /*
|
---|
8097 | * Call the execute handler.
|
---|
8098 | */
|
---|
8099 | pSSM->cbUnitLeftV1 = UnitHdr.cbUnit - RT_OFFSETOF(SSMFILEUNITHDRV1, szName[UnitHdr.cchName]);
|
---|
8100 | pSSM->offUnit = 0;
|
---|
8101 | pSSM->offUnitUser = 0;
|
---|
8102 | pSSM->u.Read.uCurUnitVer = UnitHdr.u32Version;
|
---|
8103 | pSSM->u.Read.uCurUnitPass = SSM_PASS_FINAL;
|
---|
8104 | pSSM->u.Read.pCurUnit = pUnit;
|
---|
8105 | if (!pUnit->u.Common.pfnLoadExec)
|
---|
8106 | {
|
---|
8107 | LogRel(("SSM: No load exec callback for unit '%s'!\n", pszName));
|
---|
8108 | pSSM->rc = rc = VERR_SSM_NO_LOAD_EXEC;
|
---|
8109 | break;
|
---|
8110 | }
|
---|
8111 | ssmR3UnitCritSectEnter(pUnit);
|
---|
8112 | switch (pUnit->enmType)
|
---|
8113 | {
|
---|
8114 | case SSMUNITTYPE_DEV:
|
---|
8115 | rc = pUnit->u.Dev.pfnLoadExec(pUnit->u.Dev.pDevIns, pSSM, UnitHdr.u32Version, SSM_PASS_FINAL);
|
---|
8116 | break;
|
---|
8117 | case SSMUNITTYPE_DRV:
|
---|
8118 | rc = pUnit->u.Drv.pfnLoadExec(pUnit->u.Drv.pDrvIns, pSSM, UnitHdr.u32Version, SSM_PASS_FINAL);
|
---|
8119 | break;
|
---|
8120 | case SSMUNITTYPE_USB:
|
---|
8121 | rc = pUnit->u.Usb.pfnLoadExec(pUnit->u.Usb.pUsbIns, pSSM, UnitHdr.u32Version, SSM_PASS_FINAL);
|
---|
8122 | break;
|
---|
8123 | case SSMUNITTYPE_INTERNAL:
|
---|
8124 | rc = pUnit->u.Internal.pfnLoadExec(pVM, pSSM, UnitHdr.u32Version, SSM_PASS_FINAL);
|
---|
8125 | break;
|
---|
8126 | case SSMUNITTYPE_EXTERNAL:
|
---|
8127 | rc = pUnit->u.External.pfnLoadExec(pSSM, pUnit->u.External.pvUser, UnitHdr.u32Version, SSM_PASS_FINAL);
|
---|
8128 | break;
|
---|
8129 | default:
|
---|
8130 | rc = VERR_SSM_IPE_1;
|
---|
8131 | break;
|
---|
8132 | }
|
---|
8133 | ssmR3UnitCritSectLeave(pUnit);
|
---|
8134 | pUnit->fCalled = true;
|
---|
8135 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(pSSM->rc))
|
---|
8136 | pSSM->rc = rc;
|
---|
8137 |
|
---|
8138 | /*
|
---|
8139 | * Close the reader stream.
|
---|
8140 | */
|
---|
8141 | rc = ssmR3DataReadFinishV1(pSSM);
|
---|
8142 | if (RT_SUCCESS(rc))
|
---|
8143 | {
|
---|
8144 | /*
|
---|
8145 | * Now, we'll check the current position to see if all, or
|
---|
8146 | * more than all, the data was read.
|
---|
8147 | *
|
---|
8148 | * Note! Because of buffering / compression we'll only see the
|
---|
8149 | * really bad ones here.
|
---|
8150 | */
|
---|
8151 | uint64_t off = ssmR3StrmTell(&pSSM->Strm);
|
---|
8152 | int64_t i64Diff = off - (offUnit + UnitHdr.cbUnit);
|
---|
8153 | if (i64Diff < 0)
|
---|
8154 | {
|
---|
8155 | Log(("SSM: Unit '%s' left %lld bytes unread!\n", pszName, -i64Diff));
|
---|
8156 | rc = ssmR3StrmSkipTo(&pSSM->Strm, offUnit + UnitHdr.cbUnit);
|
---|
8157 | ssmR3ProgressByByte(pSSM, offUnit + UnitHdr.cbUnit - pSSM->offEst);
|
---|
8158 | }
|
---|
8159 | else if (i64Diff > 0)
|
---|
8160 | {
|
---|
8161 | LogRel(("SSM: Unit '%s' read %lld bytes too much!\n", pszName, i64Diff));
|
---|
8162 | if (!ASMAtomicXchgBool(&pSSM->u.Read.fHaveSetError, true))
|
---|
8163 | rc = VMSetError(pVM, VERR_SSM_LOADED_TOO_MUCH, RT_SRC_POS,
|
---|
8164 | N_("Unit '%s' read %lld bytes too much"), pszName, i64Diff);
|
---|
8165 | break;
|
---|
8166 | }
|
---|
8167 |
|
---|
8168 | pSSM->offUnit = UINT64_MAX;
|
---|
8169 | pSSM->offUnitUser = UINT64_MAX;
|
---|
8170 | }
|
---|
8171 | else
|
---|
8172 | {
|
---|
8173 | LogRel(("SSM: Load exec failed for '%s' instance #%u ! (version %u)\n",
|
---|
8174 | pszName, UnitHdr.u32Instance, UnitHdr.u32Version));
|
---|
8175 | if (!ASMAtomicXchgBool(&pSSM->u.Read.fHaveSetError, true))
|
---|
8176 | {
|
---|
8177 | if (rc == VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION)
|
---|
8178 | VMSetError(pVM, rc, RT_SRC_POS, N_("Unsupported version %u of data unit '%s' (instance #%u)"),
|
---|
8179 | UnitHdr.u32Version, UnitHdr.szName, UnitHdr.u32Instance);
|
---|
8180 | else
|
---|
8181 | VMSetError(pVM, rc, RT_SRC_POS, N_("Load exec failed for '%s' instance #%u (version %u)"),
|
---|
8182 | pszName, UnitHdr.u32Instance, UnitHdr.u32Version);
|
---|
8183 | }
|
---|
8184 | break;
|
---|
8185 | }
|
---|
8186 |
|
---|
8187 | pSSM->u.Read.pCurUnit = NULL;
|
---|
8188 | pSSM->u.Read.uCurUnitVer = UINT32_MAX;
|
---|
8189 | pSSM->u.Read.uCurUnitPass = 0;
|
---|
8190 | }
|
---|
8191 | else
|
---|
8192 | {
|
---|
8193 | /*
|
---|
8194 | * SSM unit wasn't found - ignore this when loading for the debugger.
|
---|
8195 | */
|
---|
8196 | LogRel(("SSM: Found no handler for unit '%s'!\n", pszName));
|
---|
8197 | rc = VERR_SSM_INTEGRITY_UNIT_NOT_FOUND;
|
---|
8198 | if (pSSM->enmAfter != SSMAFTER_DEBUG_IT)
|
---|
8199 | break;
|
---|
8200 | rc = ssmR3StrmSkipTo(&pSSM->Strm, offUnit + UnitHdr.cbUnit);
|
---|
8201 | }
|
---|
8202 | }
|
---|
8203 | }
|
---|
8204 | else
|
---|
8205 | rc = VERR_NO_TMP_MEMORY;
|
---|
8206 | }
|
---|
8207 |
|
---|
8208 | /*
|
---|
8209 | * I/O errors ends up here (yea, I know, very nice programming).
|
---|
8210 | */
|
---|
8211 | if (RT_FAILURE(rc))
|
---|
8212 | {
|
---|
8213 | LogRel(("SSM: I/O error. rc=%Rrc\n", rc));
|
---|
8214 | break;
|
---|
8215 | }
|
---|
8216 |
|
---|
8217 | /*
|
---|
8218 | * Check for cancellation.
|
---|
8219 | */
|
---|
8220 | if (RT_UNLIKELY(ASMAtomicUoReadU32(&(pSSM)->fCancelled) == SSMHANDLE_CANCELLED))
|
---|
8221 | {
|
---|
8222 | LogRel(("SSM: Cancelled!n"));
|
---|
8223 | rc = pSSM->rc;
|
---|
8224 | if (RT_SUCCESS(pSSM->rc))
|
---|
8225 | pSSM->rc = rc = VERR_SSM_CANCELLED;
|
---|
8226 | break;
|
---|
8227 | }
|
---|
8228 | }
|
---|
8229 |
|
---|
8230 | RTMemTmpFree(pszName);
|
---|
8231 | return rc;
|
---|
8232 | }
|
---|
8233 |
|
---|
8234 |
|
---|
8235 | /**
|
---|
8236 | * Reads and verifies the directory and footer.
|
---|
8237 | *
|
---|
8238 | * @returns VBox status code.
|
---|
8239 | * @param pSSM The saved state handle.
|
---|
8240 | */
|
---|
8241 | static int ssmR3LoadDirectoryAndFooter(PSSMHANDLE pSSM)
|
---|
8242 | {
|
---|
8243 | /*
|
---|
8244 | * The directory.
|
---|
8245 | *
|
---|
8246 | * Get the header containing the number of entries first. Then read the
|
---|
8247 | * entries and pass the combined block to the validation function.
|
---|
8248 | */
|
---|
8249 | uint64_t off = ssmR3StrmTell(&pSSM->Strm);
|
---|
8250 | size_t const cbDirHdr = RT_OFFSETOF(SSMFILEDIR, aEntries);
|
---|
8251 | SSMFILEDIR DirHdr;
|
---|
8252 | int rc = ssmR3StrmRead(&pSSM->Strm, &DirHdr, cbDirHdr);
|
---|
8253 | if (RT_FAILURE(rc))
|
---|
8254 | return rc;
|
---|
8255 | AssertLogRelMsgReturn(!memcmp(DirHdr.szMagic, SSMFILEDIR_MAGIC, sizeof(DirHdr.szMagic)),
|
---|
8256 | ("Invalid directory magic at %#llx (%lld): %.*Rhxs\n", off, off, sizeof(DirHdr.szMagic), DirHdr.szMagic),
|
---|
8257 | VERR_SSM_INTEGRITY_DIR_MAGIC);
|
---|
8258 | AssertLogRelMsgReturn(DirHdr.cEntries < _64K,
|
---|
8259 | ("Too many directory entries at %#llx (%lld): %#x\n", off, off, DirHdr.cEntries),
|
---|
8260 | VERR_SSM_INTEGRITY_DIR);
|
---|
8261 |
|
---|
8262 | size_t cbDir = RT_OFFSETOF(SSMFILEDIR, aEntries[DirHdr.cEntries]);
|
---|
8263 | PSSMFILEDIR pDir = (PSSMFILEDIR)RTMemTmpAlloc(cbDir);
|
---|
8264 | if (!pDir)
|
---|
8265 | return VERR_NO_TMP_MEMORY;
|
---|
8266 | memcpy(pDir, &DirHdr, cbDirHdr);
|
---|
8267 | rc = ssmR3StrmRead(&pSSM->Strm, (uint8_t *)pDir + cbDirHdr, cbDir - cbDirHdr);
|
---|
8268 | if (RT_SUCCESS(rc))
|
---|
8269 | rc = ssmR3ValidateDirectory(pDir, cbDir, off, DirHdr.cEntries, pSSM->u.Read.cbFileHdr, pSSM->u.Read.u32SvnRev);
|
---|
8270 | RTMemTmpFree(pDir);
|
---|
8271 | if (RT_FAILURE(rc))
|
---|
8272 | return rc;
|
---|
8273 |
|
---|
8274 | /*
|
---|
8275 | * Read and validate the footer.
|
---|
8276 | */
|
---|
8277 | off = ssmR3StrmTell(&pSSM->Strm);
|
---|
8278 | uint32_t u32StreamCRC = ssmR3StrmFinalCRC(&pSSM->Strm);
|
---|
8279 | SSMFILEFTR Footer;
|
---|
8280 | rc = ssmR3StrmRead(&pSSM->Strm, &Footer, sizeof(Footer));
|
---|
8281 | if (RT_FAILURE(rc))
|
---|
8282 | return rc;
|
---|
8283 | return ssmR3ValidateFooter(&Footer, off, DirHdr.cEntries, pSSM->u.Read.fStreamCrc32, u32StreamCRC);
|
---|
8284 | }
|
---|
8285 |
|
---|
8286 |
|
---|
8287 | /**
|
---|
8288 | * Executes the loading of a V2.X file.
|
---|
8289 | *
|
---|
8290 | * @returns VBox status code. May or may not set pSSM->rc, the returned
|
---|
8291 | * status code is ALWAYS the more accurate of the two.
|
---|
8292 | * @param pVM Pointer to the VM.
|
---|
8293 | * @param pSSM The saved state handle.
|
---|
8294 | */
|
---|
8295 | static int ssmR3LoadExecV2(PVM pVM, PSSMHANDLE pSSM)
|
---|
8296 | {
|
---|
8297 | pSSM->enmOp = SSMSTATE_LOAD_EXEC;
|
---|
8298 | for (;;)
|
---|
8299 | {
|
---|
8300 | /*
|
---|
8301 | * Read the unit header and check its integrity.
|
---|
8302 | */
|
---|
8303 | uint64_t offUnit = ssmR3StrmTell(&pSSM->Strm);
|
---|
8304 | uint32_t u32CurStreamCRC = ssmR3StrmCurCRC(&pSSM->Strm);
|
---|
8305 | SSMFILEUNITHDRV2 UnitHdr;
|
---|
8306 | int rc = ssmR3StrmRead(&pSSM->Strm, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName));
|
---|
8307 | if (RT_FAILURE(rc))
|
---|
8308 | return rc;
|
---|
8309 | if (RT_UNLIKELY( memcmp(&UnitHdr.szMagic[0], SSMFILEUNITHDR_MAGIC, sizeof(UnitHdr.szMagic))
|
---|
8310 | && memcmp(&UnitHdr.szMagic[0], SSMFILEUNITHDR_END, sizeof(UnitHdr.szMagic))))
|
---|
8311 | {
|
---|
8312 | LogRel(("SSM: Unit at %#llx (%lld): Invalid unit magic: %.*Rhxs!\n",
|
---|
8313 | offUnit, offUnit, sizeof(UnitHdr.szMagic) - 1, &UnitHdr.szMagic[0]));
|
---|
8314 | pSSM->u.Read.fHaveSetError = true;
|
---|
8315 | return VMSetError(pVM, VERR_SSM_INTEGRITY_UNIT_MAGIC, RT_SRC_POS,
|
---|
8316 | N_("Unit at %#llx (%lld): Invalid unit magic"), offUnit, offUnit);
|
---|
8317 | }
|
---|
8318 | if (UnitHdr.cbName)
|
---|
8319 | {
|
---|
8320 | AssertLogRelMsgReturn(UnitHdr.cbName <= sizeof(UnitHdr.szName),
|
---|
8321 | ("Unit at %#llx (%lld): UnitHdr.cbName=%u > %u\n",
|
---|
8322 | offUnit, offUnit, UnitHdr.cbName, sizeof(UnitHdr.szName)),
|
---|
8323 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8324 | rc = ssmR3StrmRead(&pSSM->Strm, &UnitHdr.szName[0], UnitHdr.cbName);
|
---|
8325 | if (RT_FAILURE(rc))
|
---|
8326 | return rc;
|
---|
8327 | AssertLogRelMsgReturn(!UnitHdr.szName[UnitHdr.cbName - 1],
|
---|
8328 | ("Unit at %#llx (%lld): Name %.*Rhxs was not properly terminated.\n",
|
---|
8329 | offUnit, offUnit, UnitHdr.cbName, UnitHdr.szName),
|
---|
8330 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8331 | }
|
---|
8332 | SSM_CHECK_CRC32_RET(&UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]),
|
---|
8333 | ("Unit at %#llx (%lld): CRC mismatch: %08x, correct is %08x\n", offUnit, offUnit, u32CRC, u32ActualCRC));
|
---|
8334 | AssertLogRelMsgReturn(UnitHdr.offStream == offUnit,
|
---|
8335 | ("Unit at %#llx (%lld): offStream=%#llx, expected %#llx\n", offUnit, offUnit, UnitHdr.offStream, offUnit),
|
---|
8336 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8337 | AssertLogRelMsgReturn(UnitHdr.u32CurStreamCRC == u32CurStreamCRC || !pSSM->Strm.fChecksummed,
|
---|
8338 | ("Unit at %#llx (%lld): Stream CRC mismatch: %08x, correct is %08x\n", offUnit, offUnit, UnitHdr.u32CurStreamCRC, u32CurStreamCRC),
|
---|
8339 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8340 | AssertLogRelMsgReturn(!UnitHdr.fFlags, ("Unit at %#llx (%lld): fFlags=%08x\n", offUnit, offUnit, UnitHdr.fFlags),
|
---|
8341 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8342 | if (!memcmp(&UnitHdr.szMagic[0], SSMFILEUNITHDR_END, sizeof(UnitHdr.szMagic)))
|
---|
8343 | {
|
---|
8344 | AssertLogRelMsgReturn( UnitHdr.cbName == 0
|
---|
8345 | && UnitHdr.u32Instance == 0
|
---|
8346 | && UnitHdr.u32Version == 0
|
---|
8347 | && UnitHdr.u32Pass == SSM_PASS_FINAL,
|
---|
8348 | ("Unit at %#llx (%lld): Malformed END unit\n", offUnit, offUnit),
|
---|
8349 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8350 |
|
---|
8351 | /*
|
---|
8352 | * Complete the progress bar (pending 99% afterwards) and RETURN.
|
---|
8353 | */
|
---|
8354 | Log(("SSM: Unit at %#9llx: END UNIT\n", offUnit));
|
---|
8355 | ssmR3ProgressByByte(pSSM, pSSM->cbEstTotal - pSSM->offEst);
|
---|
8356 | return ssmR3LoadDirectoryAndFooter(pSSM);
|
---|
8357 | }
|
---|
8358 | AssertLogRelMsgReturn(UnitHdr.cbName > 1, ("Unit at %#llx (%lld): No name\n", offUnit, offUnit), VERR_SSM_INTEGRITY);
|
---|
8359 |
|
---|
8360 | Log(("SSM: Unit at %#9llx: '%s', instance %u, pass %#x, version %u\n",
|
---|
8361 | offUnit, UnitHdr.szName, UnitHdr.u32Instance, UnitHdr.u32Pass, UnitHdr.u32Version));
|
---|
8362 |
|
---|
8363 | /*
|
---|
8364 | * Find the data unit in our internal table.
|
---|
8365 | */
|
---|
8366 | PSSMUNIT pUnit = ssmR3Find(pVM, UnitHdr.szName, UnitHdr.u32Instance);
|
---|
8367 | if (pUnit)
|
---|
8368 | {
|
---|
8369 | /*
|
---|
8370 | * Call the execute handler.
|
---|
8371 | */
|
---|
8372 | AssertLogRelMsgReturn(pUnit->u.Common.pfnLoadExec,
|
---|
8373 | ("SSM: No load exec callback for unit '%s'!\n", UnitHdr.szName),
|
---|
8374 | VERR_SSM_NO_LOAD_EXEC);
|
---|
8375 | pSSM->u.Read.uCurUnitVer = UnitHdr.u32Version;
|
---|
8376 | pSSM->u.Read.uCurUnitPass = UnitHdr.u32Pass;
|
---|
8377 | pSSM->u.Read.pCurUnit = pUnit;
|
---|
8378 | ssmR3DataReadBeginV2(pSSM);
|
---|
8379 | ssmR3UnitCritSectEnter(pUnit);
|
---|
8380 | switch (pUnit->enmType)
|
---|
8381 | {
|
---|
8382 | case SSMUNITTYPE_DEV:
|
---|
8383 | rc = pUnit->u.Dev.pfnLoadExec(pUnit->u.Dev.pDevIns, pSSM, UnitHdr.u32Version, UnitHdr.u32Pass);
|
---|
8384 | break;
|
---|
8385 | case SSMUNITTYPE_DRV:
|
---|
8386 | rc = pUnit->u.Drv.pfnLoadExec(pUnit->u.Drv.pDrvIns, pSSM, UnitHdr.u32Version, UnitHdr.u32Pass);
|
---|
8387 | break;
|
---|
8388 | case SSMUNITTYPE_USB:
|
---|
8389 | rc = pUnit->u.Usb.pfnLoadExec(pUnit->u.Usb.pUsbIns, pSSM, UnitHdr.u32Version, UnitHdr.u32Pass);
|
---|
8390 | break;
|
---|
8391 | case SSMUNITTYPE_INTERNAL:
|
---|
8392 | rc = pUnit->u.Internal.pfnLoadExec(pVM, pSSM, UnitHdr.u32Version, UnitHdr.u32Pass);
|
---|
8393 | break;
|
---|
8394 | case SSMUNITTYPE_EXTERNAL:
|
---|
8395 | rc = pUnit->u.External.pfnLoadExec(pSSM, pUnit->u.External.pvUser, UnitHdr.u32Version, UnitHdr.u32Pass);
|
---|
8396 | break;
|
---|
8397 | default:
|
---|
8398 | rc = VERR_SSM_IPE_1;
|
---|
8399 | break;
|
---|
8400 | }
|
---|
8401 | ssmR3UnitCritSectLeave(pUnit);
|
---|
8402 | pUnit->fCalled = true;
|
---|
8403 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(pSSM->rc))
|
---|
8404 | pSSM->rc = rc;
|
---|
8405 | rc = ssmR3DataReadFinishV2(pSSM);
|
---|
8406 | if (RT_SUCCESS(rc))
|
---|
8407 | {
|
---|
8408 | pSSM->offUnit = UINT64_MAX;
|
---|
8409 | pSSM->offUnitUser = UINT64_MAX;
|
---|
8410 | }
|
---|
8411 | else
|
---|
8412 | {
|
---|
8413 | LogRel(("SSM: LoadExec failed for '%s' instance #%u (version %u, pass %#x): %Rrc\n",
|
---|
8414 | UnitHdr.szName, UnitHdr.u32Instance, UnitHdr.u32Version, UnitHdr.u32Pass, rc));
|
---|
8415 | if (!ASMAtomicXchgBool(&pSSM->u.Read.fHaveSetError, true))
|
---|
8416 | {
|
---|
8417 | if (rc == VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION)
|
---|
8418 | rc = VMSetError(pVM, rc, RT_SRC_POS, N_("Unsupported version %u of data unit '%s' (instance #%u, pass %#x)"),
|
---|
8419 | UnitHdr.u32Version, UnitHdr.szName, UnitHdr.u32Instance, UnitHdr.u32Pass);
|
---|
8420 | else
|
---|
8421 | rc = VMSetError(pVM, rc, RT_SRC_POS, N_("Failed to load unit '%s'"), UnitHdr.szName);
|
---|
8422 | }
|
---|
8423 | return rc;
|
---|
8424 | }
|
---|
8425 | }
|
---|
8426 | else
|
---|
8427 | {
|
---|
8428 | /*
|
---|
8429 | * SSM unit wasn't found - ignore this when loading for the debugger.
|
---|
8430 | */
|
---|
8431 | LogRel(("SSM: Found no handler for unit '%s' instance #%u!\n", UnitHdr.szName, UnitHdr.u32Instance));
|
---|
8432 | if (pSSM->enmAfter != SSMAFTER_DEBUG_IT)
|
---|
8433 | {
|
---|
8434 | pSSM->u.Read.fHaveSetError = true;
|
---|
8435 | return VMSetError(pVM, VERR_SSM_INTEGRITY_UNIT_NOT_FOUND, RT_SRC_POS,
|
---|
8436 | N_("Found no handler for unit '%s' instance #%u"), UnitHdr.szName, UnitHdr.u32Instance);
|
---|
8437 | }
|
---|
8438 | SSMR3SkipToEndOfUnit(pSSM);
|
---|
8439 | ssmR3DataReadFinishV2(pSSM);
|
---|
8440 | }
|
---|
8441 |
|
---|
8442 | /*
|
---|
8443 | * Check for cancellation.
|
---|
8444 | */
|
---|
8445 | if (RT_UNLIKELY(ASMAtomicUoReadU32(&(pSSM)->fCancelled) == SSMHANDLE_CANCELLED))
|
---|
8446 | {
|
---|
8447 | LogRel(("SSM: Cancelled!\n"));
|
---|
8448 | if (RT_SUCCESS(pSSM->rc))
|
---|
8449 | pSSM->rc = VERR_SSM_CANCELLED;
|
---|
8450 | return pSSM->rc;
|
---|
8451 | }
|
---|
8452 | }
|
---|
8453 | /* won't get here */
|
---|
8454 | }
|
---|
8455 |
|
---|
8456 |
|
---|
8457 |
|
---|
8458 |
|
---|
8459 | /**
|
---|
8460 | * Load VM save operation.
|
---|
8461 | *
|
---|
8462 | * @returns VBox status.
|
---|
8463 | *
|
---|
8464 | * @param pVM Pointer to the VM.
|
---|
8465 | * @param pszFilename The name of the saved state file. NULL if pStreamOps
|
---|
8466 | * is used.
|
---|
8467 | * @param pStreamOps The stream method table. NULL if pszFilename is
|
---|
8468 | * used.
|
---|
8469 | * @param pvStreamOpsUser The user argument for the stream methods.
|
---|
8470 | * @param enmAfter What is planned after a successful load operation.
|
---|
8471 | * Only acceptable values are SSMAFTER_RESUME and SSMAFTER_DEBUG_IT.
|
---|
8472 | * @param pfnProgress Progress callback. Optional.
|
---|
8473 | * @param pvProgressUser User argument for the progress callback.
|
---|
8474 | *
|
---|
8475 | * @thread EMT
|
---|
8476 | */
|
---|
8477 | VMMR3DECL(int) SSMR3Load(PVM pVM, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
|
---|
8478 | SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void *pvProgressUser)
|
---|
8479 | {
|
---|
8480 | LogFlow(("SSMR3Load: pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p\n",
|
---|
8481 | pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser));
|
---|
8482 | VM_ASSERT_EMT0(pVM);
|
---|
8483 |
|
---|
8484 | /*
|
---|
8485 | * Validate input.
|
---|
8486 | */
|
---|
8487 | AssertMsgReturn( enmAfter == SSMAFTER_RESUME
|
---|
8488 | || enmAfter == SSMAFTER_TELEPORT
|
---|
8489 | || enmAfter == SSMAFTER_DEBUG_IT,
|
---|
8490 | ("%d\n", enmAfter),
|
---|
8491 | VERR_INVALID_PARAMETER);
|
---|
8492 | AssertReturn(!pszFilename != !pStreamOps, VERR_INVALID_PARAMETER);
|
---|
8493 | if (pStreamOps)
|
---|
8494 | {
|
---|
8495 | AssertReturn(pStreamOps->u32Version == SSMSTRMOPS_VERSION, VERR_INVALID_MAGIC);
|
---|
8496 | AssertReturn(pStreamOps->u32EndVersion == SSMSTRMOPS_VERSION, VERR_INVALID_MAGIC);
|
---|
8497 | AssertReturn(pStreamOps->pfnWrite, VERR_INVALID_PARAMETER);
|
---|
8498 | AssertReturn(pStreamOps->pfnRead, VERR_INVALID_PARAMETER);
|
---|
8499 | AssertReturn(pStreamOps->pfnSeek, VERR_INVALID_PARAMETER);
|
---|
8500 | AssertReturn(pStreamOps->pfnTell, VERR_INVALID_PARAMETER);
|
---|
8501 | AssertReturn(pStreamOps->pfnSize, VERR_INVALID_PARAMETER);
|
---|
8502 | AssertReturn(pStreamOps->pfnClose, VERR_INVALID_PARAMETER);
|
---|
8503 | }
|
---|
8504 |
|
---|
8505 | /*
|
---|
8506 | * Create the handle and open the file.
|
---|
8507 | */
|
---|
8508 | SSMHANDLE Handle;
|
---|
8509 | int rc = ssmR3OpenFile(pVM, pszFilename, pStreamOps, pvStreamOpsUser, false /* fChecksumIt */,
|
---|
8510 | true /* fChecksumOnRead */, 8 /*cBuffers*/, &Handle);
|
---|
8511 | if (RT_SUCCESS(rc))
|
---|
8512 | {
|
---|
8513 | ssmR3StrmStartIoThread(&Handle.Strm);
|
---|
8514 | ssmR3SetCancellable(pVM, &Handle, true);
|
---|
8515 |
|
---|
8516 | Handle.enmAfter = enmAfter;
|
---|
8517 | Handle.pfnProgress = pfnProgress;
|
---|
8518 | Handle.pvUser = pvProgressUser;
|
---|
8519 | Handle.uPercentLive = 0;
|
---|
8520 | Handle.uPercentPrepare = 2;
|
---|
8521 | Handle.uPercentDone = 2;
|
---|
8522 |
|
---|
8523 | if (Handle.u.Read.u16VerMajor)
|
---|
8524 | LogRel(("SSM: File header: Format %u.%u, VirtualBox Version %u.%u.%u r%u, %u-bit host, cbGCPhys=%u, cbGCPtr=%u\n",
|
---|
8525 | Handle.u.Read.uFmtVerMajor, Handle.u.Read.uFmtVerMinor,
|
---|
8526 | Handle.u.Read.u16VerMajor, Handle.u.Read.u16VerMinor, Handle.u.Read.u32VerBuild, Handle.u.Read.u32SvnRev,
|
---|
8527 | Handle.u.Read.cHostBits, Handle.u.Read.cbGCPhys, Handle.u.Read.cbGCPtr));
|
---|
8528 | else
|
---|
8529 | LogRel(("SSM: File header: Format %u.%u, %u-bit host, cbGCPhys=%u, cbGCPtr=%u\n" ,
|
---|
8530 | Handle.u.Read.uFmtVerMajor, Handle.u.Read.uFmtVerMinor,
|
---|
8531 | Handle.u.Read.cHostBits, Handle.u.Read.cbGCPhys, Handle.u.Read.cbGCPtr));
|
---|
8532 |
|
---|
8533 | if (pfnProgress)
|
---|
8534 | pfnProgress(pVM->pUVM, Handle.uPercent, pvProgressUser);
|
---|
8535 |
|
---|
8536 | /*
|
---|
8537 | * Clear the per unit flags.
|
---|
8538 | */
|
---|
8539 | PSSMUNIT pUnit;
|
---|
8540 | for (pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
8541 | pUnit->fCalled = false;
|
---|
8542 |
|
---|
8543 | /*
|
---|
8544 | * Do the prepare run.
|
---|
8545 | */
|
---|
8546 | Handle.rc = VINF_SUCCESS;
|
---|
8547 | Handle.enmOp = SSMSTATE_LOAD_PREP;
|
---|
8548 | for (pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
8549 | {
|
---|
8550 | if (pUnit->u.Common.pfnLoadPrep)
|
---|
8551 | {
|
---|
8552 | Handle.u.Read.pCurUnit = pUnit;
|
---|
8553 | pUnit->fCalled = true;
|
---|
8554 | ssmR3UnitCritSectEnter(pUnit);
|
---|
8555 | switch (pUnit->enmType)
|
---|
8556 | {
|
---|
8557 | case SSMUNITTYPE_DEV:
|
---|
8558 | rc = pUnit->u.Dev.pfnLoadPrep(pUnit->u.Dev.pDevIns, &Handle);
|
---|
8559 | break;
|
---|
8560 | case SSMUNITTYPE_DRV:
|
---|
8561 | rc = pUnit->u.Drv.pfnLoadPrep(pUnit->u.Drv.pDrvIns, &Handle);
|
---|
8562 | break;
|
---|
8563 | case SSMUNITTYPE_USB:
|
---|
8564 | rc = pUnit->u.Usb.pfnLoadPrep(pUnit->u.Usb.pUsbIns, &Handle);
|
---|
8565 | break;
|
---|
8566 | case SSMUNITTYPE_INTERNAL:
|
---|
8567 | rc = pUnit->u.Internal.pfnLoadPrep(pVM, &Handle);
|
---|
8568 | break;
|
---|
8569 | case SSMUNITTYPE_EXTERNAL:
|
---|
8570 | rc = pUnit->u.External.pfnLoadPrep(&Handle, pUnit->u.External.pvUser);
|
---|
8571 | break;
|
---|
8572 | default:
|
---|
8573 | rc = VERR_SSM_IPE_1;
|
---|
8574 | break;
|
---|
8575 | }
|
---|
8576 | ssmR3UnitCritSectLeave(pUnit);
|
---|
8577 | Handle.u.Read.pCurUnit = NULL;
|
---|
8578 | if (RT_FAILURE(rc) && RT_SUCCESS_NP(Handle.rc))
|
---|
8579 | Handle.rc = rc;
|
---|
8580 | else
|
---|
8581 | rc = Handle.rc;
|
---|
8582 | if (RT_FAILURE(rc))
|
---|
8583 | {
|
---|
8584 | LogRel(("SSM: Prepare load failed with rc=%Rrc for data unit '%s.\n", rc, pUnit->szName));
|
---|
8585 | break;
|
---|
8586 | }
|
---|
8587 | }
|
---|
8588 | }
|
---|
8589 |
|
---|
8590 | /* end of prepare % */
|
---|
8591 | if (pfnProgress)
|
---|
8592 | pfnProgress(pVM->pUVM, Handle.uPercentPrepare - 1, pvProgressUser);
|
---|
8593 | Handle.uPercent = Handle.uPercentPrepare;
|
---|
8594 | Handle.cbEstTotal = Handle.u.Read.cbLoadFile;
|
---|
8595 | Handle.offEstUnitEnd = Handle.u.Read.cbLoadFile;
|
---|
8596 |
|
---|
8597 | /*
|
---|
8598 | * Do the execute run.
|
---|
8599 | */
|
---|
8600 | if (RT_SUCCESS(rc))
|
---|
8601 | {
|
---|
8602 | if (Handle.u.Read.uFmtVerMajor >= 2)
|
---|
8603 | rc = ssmR3LoadExecV2(pVM, &Handle);
|
---|
8604 | else
|
---|
8605 | rc = ssmR3LoadExecV1(pVM, &Handle);
|
---|
8606 | Handle.u.Read.pCurUnit = NULL;
|
---|
8607 | Handle.u.Read.uCurUnitVer = UINT32_MAX;
|
---|
8608 | Handle.u.Read.uCurUnitPass = 0;
|
---|
8609 |
|
---|
8610 | /* (progress should be pending 99% now) */
|
---|
8611 | AssertMsg( Handle.fLiveSave
|
---|
8612 | || RT_FAILURE(rc)
|
---|
8613 | || Handle.uPercent == 101 - Handle.uPercentDone, ("%d\n", Handle.uPercent));
|
---|
8614 | }
|
---|
8615 |
|
---|
8616 | /*
|
---|
8617 | * Do the done run.
|
---|
8618 | */
|
---|
8619 | Handle.rc = rc;
|
---|
8620 | Handle.enmOp = SSMSTATE_LOAD_DONE;
|
---|
8621 | for (pUnit = pVM->ssm.s.pHead; pUnit; pUnit = pUnit->pNext)
|
---|
8622 | {
|
---|
8623 | if ( pUnit->u.Common.pfnLoadDone
|
---|
8624 | && ( pUnit->fCalled
|
---|
8625 | || (!pUnit->u.Common.pfnLoadPrep && !pUnit->u.Common.pfnLoadExec)))
|
---|
8626 | {
|
---|
8627 | Handle.u.Read.pCurUnit = pUnit;
|
---|
8628 | int const rcOld = Handle.rc;
|
---|
8629 | rc = VINF_SUCCESS;
|
---|
8630 | ssmR3UnitCritSectEnter(pUnit);
|
---|
8631 | switch (pUnit->enmType)
|
---|
8632 | {
|
---|
8633 | case SSMUNITTYPE_DEV:
|
---|
8634 | rc = pUnit->u.Dev.pfnLoadDone(pUnit->u.Dev.pDevIns, &Handle);
|
---|
8635 | break;
|
---|
8636 | case SSMUNITTYPE_DRV:
|
---|
8637 | rc = pUnit->u.Drv.pfnLoadDone(pUnit->u.Drv.pDrvIns, &Handle);
|
---|
8638 | break;
|
---|
8639 | case SSMUNITTYPE_USB:
|
---|
8640 | rc = pUnit->u.Usb.pfnLoadDone(pUnit->u.Usb.pUsbIns, &Handle);
|
---|
8641 | break;
|
---|
8642 | case SSMUNITTYPE_INTERNAL:
|
---|
8643 | rc = pUnit->u.Internal.pfnLoadDone(pVM, &Handle);
|
---|
8644 | break;
|
---|
8645 | case SSMUNITTYPE_EXTERNAL:
|
---|
8646 | rc = pUnit->u.External.pfnLoadDone(&Handle, pUnit->u.External.pvUser);
|
---|
8647 | break;
|
---|
8648 | default:
|
---|
8649 | rc = VERR_SSM_IPE_1;
|
---|
8650 | break;
|
---|
8651 | }
|
---|
8652 | ssmR3UnitCritSectLeave(pUnit);
|
---|
8653 | Handle.u.Read.pCurUnit = NULL;
|
---|
8654 | if (RT_SUCCESS(rc) && Handle.rc != rcOld)
|
---|
8655 | rc = Handle.rc;
|
---|
8656 | if (RT_FAILURE(rc))
|
---|
8657 | {
|
---|
8658 | LogRel(("SSM: LoadDone failed with rc=%Rrc for data unit '%s' instance #%u.\n",
|
---|
8659 | rc, pUnit->szName, pUnit->u32Instance));
|
---|
8660 | if (!ASMAtomicXchgBool(&Handle.u.Read.fHaveSetError, true))
|
---|
8661 | VMSetError(pVM, rc, RT_SRC_POS, N_("LoadDone failed with rc=%Rrc for data unit '%s' instance #%u."),
|
---|
8662 | rc, pUnit->szName, pUnit->u32Instance);
|
---|
8663 | if (RT_SUCCESS_NP(Handle.rc))
|
---|
8664 | Handle.rc = rc;
|
---|
8665 | }
|
---|
8666 | }
|
---|
8667 | }
|
---|
8668 |
|
---|
8669 | /* progress */
|
---|
8670 | if (pfnProgress)
|
---|
8671 | pfnProgress(pVM->pUVM, 99, pvProgressUser);
|
---|
8672 |
|
---|
8673 | ssmR3SetCancellable(pVM, &Handle, false);
|
---|
8674 | ssmR3StrmClose(&Handle.Strm, Handle.rc == VERR_SSM_CANCELLED);
|
---|
8675 | rc = Handle.rc;
|
---|
8676 | }
|
---|
8677 |
|
---|
8678 | /*
|
---|
8679 | * Done
|
---|
8680 | */
|
---|
8681 | if (RT_SUCCESS(rc))
|
---|
8682 | {
|
---|
8683 | /* progress */
|
---|
8684 | if (pfnProgress)
|
---|
8685 | pfnProgress(pVM->pUVM, 100, pvProgressUser);
|
---|
8686 | Log(("SSM: Load of '%s' completed!\n", pszFilename));
|
---|
8687 | }
|
---|
8688 | return rc;
|
---|
8689 | }
|
---|
8690 |
|
---|
8691 |
|
---|
8692 | /**
|
---|
8693 | * VMSetError wrapper for load errors that inserts the saved state details.
|
---|
8694 | *
|
---|
8695 | * @returns rc.
|
---|
8696 | * @param pSSM The saved state handle.
|
---|
8697 | * @param rc The status code of the error. Use RT_SRC_POS.
|
---|
8698 | * @param RT_SRC_POS_DECL The source location.
|
---|
8699 | * @param pszFormat The message format string.
|
---|
8700 | * @param ... Variable argument list.
|
---|
8701 | */
|
---|
8702 | VMMR3DECL(int) SSMR3SetLoadError(PSSMHANDLE pSSM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
|
---|
8703 | {
|
---|
8704 | va_list va;
|
---|
8705 | va_start(va, pszFormat);
|
---|
8706 | rc = SSMR3SetLoadErrorV(pSSM, rc, RT_SRC_POS_ARGS, pszFormat, va);
|
---|
8707 | va_end(va);
|
---|
8708 | return rc;
|
---|
8709 | }
|
---|
8710 |
|
---|
8711 |
|
---|
8712 | /**
|
---|
8713 | * VMSetError wrapper for load errors that inserts the saved state details.
|
---|
8714 | *
|
---|
8715 | * @returns rc.
|
---|
8716 | * @param pSSM The saved state handle.
|
---|
8717 | * @param rc The status code of the error.
|
---|
8718 | * @param RT_SRC_POS_DECL The error location, use RT_SRC_POS.
|
---|
8719 | * @param pszFormat The message format string.
|
---|
8720 | * @param va Variable argument list.
|
---|
8721 | */
|
---|
8722 | VMMR3DECL(int) SSMR3SetLoadErrorV(PSSMHANDLE pSSM, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
|
---|
8723 | {
|
---|
8724 | /*
|
---|
8725 | * Input validations.
|
---|
8726 | */
|
---|
8727 | SSM_ASSERT_READABLE_RET(pSSM);
|
---|
8728 | AssertPtr(pszFormat);
|
---|
8729 | Assert(RT_FAILURE_NP(rc));
|
---|
8730 |
|
---|
8731 | /*
|
---|
8732 | * Format the incoming error.
|
---|
8733 | */
|
---|
8734 | char *pszMsg;
|
---|
8735 | RTStrAPrintfV(&pszMsg, pszFormat, va);
|
---|
8736 | if (!pszMsg)
|
---|
8737 | {
|
---|
8738 | VMSetError(pSSM->pVM, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
8739 | N_("SSMR3SetLoadErrorV ran out of memory formatting: %s\n"), pszFormat);
|
---|
8740 | return rc;
|
---|
8741 | }
|
---|
8742 |
|
---|
8743 | /*
|
---|
8744 | * Forward to VMSetError with the additional info.
|
---|
8745 | */
|
---|
8746 | PSSMUNIT pUnit = pSSM->u.Read.pCurUnit;
|
---|
8747 | const char *pszName = pUnit ? pUnit->szName : "unknown";
|
---|
8748 | uint32_t uInstance = pUnit ? pUnit->u32Instance : 0;
|
---|
8749 | if ( pSSM->enmOp == SSMSTATE_LOAD_EXEC
|
---|
8750 | && pSSM->u.Read.uCurUnitPass == SSM_PASS_FINAL)
|
---|
8751 | rc = VMSetError(pSSM->pVM, rc, RT_SRC_POS_ARGS, N_("%s#%u: %s [ver=%u pass=final]"),
|
---|
8752 | pszName, uInstance, pszMsg, pSSM->u.Read.uCurUnitVer);
|
---|
8753 | else if (pSSM->enmOp == SSMSTATE_LOAD_EXEC)
|
---|
8754 | rc = VMSetError(pSSM->pVM, rc, RT_SRC_POS_ARGS, N_("%s#%u: %s [ver=%u pass=#%u]"),
|
---|
8755 | pszName, uInstance, pszMsg, pSSM->u.Read.uCurUnitVer, pSSM->u.Read.uCurUnitPass);
|
---|
8756 | else if (pSSM->enmOp == SSMSTATE_LOAD_PREP)
|
---|
8757 | rc = VMSetError(pSSM->pVM, rc, RT_SRC_POS_ARGS, N_("%s#%u: %s [prep]"),
|
---|
8758 | pszName, uInstance, pszMsg);
|
---|
8759 | else if (pSSM->enmOp == SSMSTATE_LOAD_DONE)
|
---|
8760 | rc = VMSetError(pSSM->pVM, rc, RT_SRC_POS_ARGS, N_("%s#%u: %s [done]"),
|
---|
8761 | pszName, uInstance, pszMsg);
|
---|
8762 | else if (pSSM->enmOp == SSMSTATE_OPEN_READ)
|
---|
8763 | rc = VMSetError(pSSM->pVM, rc, RT_SRC_POS_ARGS, N_("%s#%u: %s [read]"),
|
---|
8764 | pszName, uInstance, pszMsg);
|
---|
8765 | else
|
---|
8766 | AssertFailed();
|
---|
8767 | pSSM->u.Read.fHaveSetError = true;
|
---|
8768 | RTStrFree(pszMsg);
|
---|
8769 | return rc;
|
---|
8770 | }
|
---|
8771 |
|
---|
8772 |
|
---|
8773 | /**
|
---|
8774 | * SSMR3SetLoadError wrapper that returns VERR_SSM_LOAD_CONFIG_MISMATCH.
|
---|
8775 | *
|
---|
8776 | * @returns VERR_SSM_LOAD_CONFIG_MISMATCH.
|
---|
8777 | * @param pSSM The saved state handle.
|
---|
8778 | * @param RT_SRC_POS_DECL The error location, use RT_SRC_POS.
|
---|
8779 | * @param pszFormat The message format string.
|
---|
8780 | * @param va Variable argument list.
|
---|
8781 | */
|
---|
8782 | VMMR3DECL(int) SSMR3SetCfgError(PSSMHANDLE pSSM, RT_SRC_POS_DECL, const char *pszFormat, ...)
|
---|
8783 | {
|
---|
8784 | va_list va;
|
---|
8785 | va_start(va, pszFormat);
|
---|
8786 | int rc = SSMR3SetLoadErrorV(pSSM, VERR_SSM_LOAD_CONFIG_MISMATCH, RT_SRC_POS_ARGS, pszFormat, va);
|
---|
8787 | va_end(va);
|
---|
8788 | return rc;
|
---|
8789 | }
|
---|
8790 |
|
---|
8791 | #endif /* !SSM_STANDALONE */
|
---|
8792 |
|
---|
8793 | /**
|
---|
8794 | * Validates a file as a validate SSM saved state.
|
---|
8795 | *
|
---|
8796 | * This will only verify the file format, the format and content of individual
|
---|
8797 | * data units are not inspected.
|
---|
8798 | *
|
---|
8799 | * @returns VINF_SUCCESS if valid.
|
---|
8800 | * @returns VBox status code on other failures.
|
---|
8801 | *
|
---|
8802 | * @param pszFilename The path to the file to validate.
|
---|
8803 | * @param fChecksumIt Whether to checksum the file or not.
|
---|
8804 | *
|
---|
8805 | * @thread Any.
|
---|
8806 | */
|
---|
8807 | VMMR3DECL(int) SSMR3ValidateFile(const char *pszFilename, bool fChecksumIt)
|
---|
8808 | {
|
---|
8809 | LogFlow(("SSMR3ValidateFile: pszFilename=%p:{%s} fChecksumIt=%RTbool\n", pszFilename, pszFilename, fChecksumIt));
|
---|
8810 |
|
---|
8811 | /*
|
---|
8812 | * Try open the file and validate it.
|
---|
8813 | */
|
---|
8814 | SSMHANDLE Handle;
|
---|
8815 | int rc = ssmR3OpenFile(NULL, pszFilename, NULL /*pStreamOps*/, NULL /*pvUser*/, fChecksumIt,
|
---|
8816 | false /*fChecksumOnRead*/, 1 /*cBuffers*/, &Handle);
|
---|
8817 | if (RT_SUCCESS(rc))
|
---|
8818 | ssmR3StrmClose(&Handle.Strm, false /*fCancelled*/);
|
---|
8819 | else
|
---|
8820 | Log(("SSM: Failed to open saved state file '%s', rc=%Rrc.\n", pszFilename, rc));
|
---|
8821 | return rc;
|
---|
8822 | }
|
---|
8823 |
|
---|
8824 |
|
---|
8825 | /**
|
---|
8826 | * Opens a saved state file for reading.
|
---|
8827 | *
|
---|
8828 | * @returns VBox status code.
|
---|
8829 | *
|
---|
8830 | * @param pszFilename The path to the saved state file.
|
---|
8831 | * @param fFlags Open flags. Reserved, must be 0.
|
---|
8832 | * @param ppSSM Where to store the SSM handle.
|
---|
8833 | *
|
---|
8834 | * @thread Any.
|
---|
8835 | */
|
---|
8836 | VMMR3DECL(int) SSMR3Open(const char *pszFilename, unsigned fFlags, PSSMHANDLE *ppSSM)
|
---|
8837 | {
|
---|
8838 | LogFlow(("SSMR3Open: pszFilename=%p:{%s} fFlags=%#x ppSSM=%p\n", pszFilename, pszFilename, fFlags, ppSSM));
|
---|
8839 |
|
---|
8840 | /*
|
---|
8841 | * Validate input.
|
---|
8842 | */
|
---|
8843 | AssertMsgReturn(VALID_PTR(pszFilename), ("%p\n", pszFilename), VERR_INVALID_PARAMETER);
|
---|
8844 | AssertMsgReturn(!fFlags, ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
|
---|
8845 | AssertMsgReturn(VALID_PTR(ppSSM), ("%p\n", ppSSM), VERR_INVALID_PARAMETER);
|
---|
8846 |
|
---|
8847 | /*
|
---|
8848 | * Allocate a handle.
|
---|
8849 | */
|
---|
8850 | PSSMHANDLE pSSM = (PSSMHANDLE)RTMemAllocZ(sizeof(*pSSM));
|
---|
8851 | AssertReturn(pSSM, VERR_NO_MEMORY);
|
---|
8852 |
|
---|
8853 | /*
|
---|
8854 | * Try open the file and validate it.
|
---|
8855 | */
|
---|
8856 | int rc = ssmR3OpenFile(NULL, pszFilename, NULL /*pStreamOps*/, NULL /*pvUser*/, false /*fChecksumIt*/,
|
---|
8857 | true /*fChecksumOnRead*/, 1 /*cBuffers*/, pSSM);
|
---|
8858 | if (RT_SUCCESS(rc))
|
---|
8859 | {
|
---|
8860 | pSSM->enmAfter = SSMAFTER_OPENED;
|
---|
8861 | pSSM->enmOp = SSMSTATE_OPEN_READ;
|
---|
8862 | *ppSSM = pSSM;
|
---|
8863 | LogFlow(("SSMR3Open: returns VINF_SUCCESS *ppSSM=%p\n", *ppSSM));
|
---|
8864 | return VINF_SUCCESS;
|
---|
8865 | }
|
---|
8866 |
|
---|
8867 | Log(("SSMR3Open: Failed to open saved state file '%s', rc=%Rrc.\n", pszFilename, rc));
|
---|
8868 | RTMemFree(pSSM);
|
---|
8869 | return rc;
|
---|
8870 |
|
---|
8871 | }
|
---|
8872 |
|
---|
8873 |
|
---|
8874 | /**
|
---|
8875 | * Closes a saved state file opened by SSMR3Open().
|
---|
8876 | *
|
---|
8877 | * @returns VBox status code.
|
---|
8878 | *
|
---|
8879 | * @param pSSM The SSM handle returned by SSMR3Open().
|
---|
8880 | *
|
---|
8881 | * @thread Any, but the caller is responsible for serializing calls per handle.
|
---|
8882 | */
|
---|
8883 | VMMR3DECL(int) SSMR3Close(PSSMHANDLE pSSM)
|
---|
8884 | {
|
---|
8885 | LogFlow(("SSMR3Close: pSSM=%p\n", pSSM));
|
---|
8886 |
|
---|
8887 | /*
|
---|
8888 | * Validate input.
|
---|
8889 | */
|
---|
8890 | AssertMsgReturn(VALID_PTR(pSSM), ("%p\n", pSSM), VERR_INVALID_PARAMETER);
|
---|
8891 | AssertMsgReturn(pSSM->enmAfter == SSMAFTER_OPENED, ("%d\n", pSSM->enmAfter),VERR_INVALID_PARAMETER);
|
---|
8892 | AssertMsgReturn(pSSM->enmOp == SSMSTATE_OPEN_READ, ("%d\n", pSSM->enmOp), VERR_INVALID_PARAMETER);
|
---|
8893 | Assert(pSSM->fCancelled == SSMHANDLE_OK);
|
---|
8894 |
|
---|
8895 | /*
|
---|
8896 | * Close the stream and free the handle.
|
---|
8897 | */
|
---|
8898 | int rc = ssmR3StrmClose(&pSSM->Strm, pSSM->rc == VERR_SSM_CANCELLED);
|
---|
8899 | if (pSSM->u.Read.pZipDecompV1)
|
---|
8900 | {
|
---|
8901 | RTZipDecompDestroy(pSSM->u.Read.pZipDecompV1);
|
---|
8902 | pSSM->u.Read.pZipDecompV1 = NULL;
|
---|
8903 | }
|
---|
8904 | RTMemFree(pSSM);
|
---|
8905 | return rc;
|
---|
8906 | }
|
---|
8907 |
|
---|
8908 |
|
---|
8909 | /**
|
---|
8910 | * Worker for SSMR3Seek that seeks version 1 saved state files.
|
---|
8911 | *
|
---|
8912 | * @returns VBox status code.
|
---|
8913 | * @param pSSM The SSM handle.
|
---|
8914 | * @param pszUnit The unit to seek to.
|
---|
8915 | * @param iInstance The particular instance we seek.
|
---|
8916 | * @param piVersion Where to store the unit version number.
|
---|
8917 | */
|
---|
8918 | static int ssmR3FileSeekV1(PSSMHANDLE pSSM, const char *pszUnit, uint32_t iInstance, uint32_t *piVersion)
|
---|
8919 | {
|
---|
8920 | /*
|
---|
8921 | * Walk the data units until we find EOF or a match.
|
---|
8922 | */
|
---|
8923 | size_t cbUnitNm = strlen(pszUnit) + 1;
|
---|
8924 | AssertLogRelReturn(cbUnitNm <= SSM_MAX_NAME_SIZE, VERR_SSM_UNIT_NOT_FOUND);
|
---|
8925 | char szName[SSM_MAX_NAME_SIZE];
|
---|
8926 | SSMFILEUNITHDRV1 UnitHdr;
|
---|
8927 | for (RTFOFF off = pSSM->u.Read.cbFileHdr; ; off += UnitHdr.cbUnit)
|
---|
8928 | {
|
---|
8929 | /*
|
---|
8930 | * Read the unit header and verify it.
|
---|
8931 | */
|
---|
8932 | int rc = ssmR3StrmPeekAt(&pSSM->Strm, off, &UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV1, szName), NULL);
|
---|
8933 | AssertRCReturn(rc, rc);
|
---|
8934 | if (!memcmp(&UnitHdr.achMagic[0], SSMFILEUNITHDR_MAGIC, sizeof(SSMFILEUNITHDR_MAGIC)))
|
---|
8935 | {
|
---|
8936 | /*
|
---|
8937 | * Does what we've got match, if so read the name.
|
---|
8938 | */
|
---|
8939 | if ( UnitHdr.u32Instance == iInstance
|
---|
8940 | && UnitHdr.cchName == cbUnitNm)
|
---|
8941 | {
|
---|
8942 | rc = ssmR3StrmPeekAt(&pSSM->Strm, off + RT_OFFSETOF(SSMFILEUNITHDRV1, szName), szName, cbUnitNm, NULL);
|
---|
8943 | AssertRCReturn(rc, rc);
|
---|
8944 | AssertLogRelMsgReturn(!szName[UnitHdr.cchName - 1],
|
---|
8945 | (" Unit name '%.*s' was not properly terminated.\n", cbUnitNm, szName),
|
---|
8946 | VERR_SSM_INTEGRITY_UNIT);
|
---|
8947 |
|
---|
8948 | /*
|
---|
8949 | * Does the name match?
|
---|
8950 | */
|
---|
8951 | if (!memcmp(szName, pszUnit, cbUnitNm))
|
---|
8952 | {
|
---|
8953 | rc = ssmR3StrmSeek(&pSSM->Strm, off + RT_OFFSETOF(SSMFILEUNITHDRV1, szName) + cbUnitNm, RTFILE_SEEK_BEGIN, 0);
|
---|
8954 | pSSM->cbUnitLeftV1 = UnitHdr.cbUnit - RT_OFFSETOF(SSMFILEUNITHDRV1, szName[cbUnitNm]);
|
---|
8955 | pSSM->offUnit = 0;
|
---|
8956 | pSSM->offUnitUser = 0;
|
---|
8957 | if (piVersion)
|
---|
8958 | *piVersion = UnitHdr.u32Version;
|
---|
8959 | return VINF_SUCCESS;
|
---|
8960 | }
|
---|
8961 | }
|
---|
8962 | }
|
---|
8963 | else if (!memcmp(&UnitHdr.achMagic[0], SSMFILEUNITHDR_END, sizeof(SSMFILEUNITHDR_END)))
|
---|
8964 | return VERR_SSM_UNIT_NOT_FOUND;
|
---|
8965 | else
|
---|
8966 | AssertLogRelMsgFailedReturn(("Invalid unit magic at offset %RTfoff, '%.*s'!\n",
|
---|
8967 | off, sizeof(UnitHdr.achMagic) - 1, &UnitHdr.achMagic[0]),
|
---|
8968 | VERR_SSM_INTEGRITY_UNIT_MAGIC);
|
---|
8969 | }
|
---|
8970 | /* won't get here. */
|
---|
8971 | }
|
---|
8972 |
|
---|
8973 |
|
---|
8974 | /**
|
---|
8975 | * Worker for ssmR3FileSeekV2 for simplifying memory cleanup.
|
---|
8976 | *
|
---|
8977 | * @returns VBox status code.
|
---|
8978 | * @param pSSM The SSM handle.
|
---|
8979 | * @param pDir The directory buffer.
|
---|
8980 | * @param cbDir The size of the directory.
|
---|
8981 | * @param cDirEntries The number of directory entries.
|
---|
8982 | * @param offDir The directory offset in the file.
|
---|
8983 | * @param pszUnit The unit to seek to.
|
---|
8984 | * @param iInstance The particular instance we seek.
|
---|
8985 | * @param piVersion Where to store the unit version number.
|
---|
8986 | */
|
---|
8987 | static int ssmR3FileSeekSubV2(PSSMHANDLE pSSM, PSSMFILEDIR pDir, size_t cbDir, uint32_t cDirEntries, uint64_t offDir,
|
---|
8988 | const char *pszUnit, uint32_t iInstance, uint32_t *piVersion)
|
---|
8989 | {
|
---|
8990 | /*
|
---|
8991 | * Read it.
|
---|
8992 | */
|
---|
8993 | int rc = ssmR3StrmPeekAt(&pSSM->Strm, offDir, pDir, cbDir, NULL);
|
---|
8994 | AssertLogRelRCReturn(rc, rc);
|
---|
8995 | rc = ssmR3ValidateDirectory(pDir, (uint32_t)cbDir, offDir, cDirEntries, pSSM->u.Read.cbFileHdr, pSSM->u.Read.u32SvnRev);
|
---|
8996 | if (RT_FAILURE(rc))
|
---|
8997 | return rc;
|
---|
8998 |
|
---|
8999 | /*
|
---|
9000 | * Search the directory.
|
---|
9001 | */
|
---|
9002 | size_t cbUnitNm = strlen(pszUnit) + 1;
|
---|
9003 | uint32_t const u32NameCRC = RTCrc32(pszUnit, cbUnitNm - 1);
|
---|
9004 | for (uint32_t i = 0; i < cDirEntries; i++)
|
---|
9005 | {
|
---|
9006 | if ( pDir->aEntries[i].u32NameCRC == u32NameCRC
|
---|
9007 | && pDir->aEntries[i].u32Instance == iInstance
|
---|
9008 | && pDir->aEntries[i].off != 0 /* bug in unreleased code */
|
---|
9009 | )
|
---|
9010 | {
|
---|
9011 | /*
|
---|
9012 | * Read and validate the unit header.
|
---|
9013 | */
|
---|
9014 | SSMFILEUNITHDRV2 UnitHdr;
|
---|
9015 | size_t cbToRead = sizeof(UnitHdr);
|
---|
9016 | if (pDir->aEntries[i].off + cbToRead > offDir)
|
---|
9017 | {
|
---|
9018 | cbToRead = offDir - pDir->aEntries[i].off;
|
---|
9019 | RT_ZERO(UnitHdr);
|
---|
9020 | }
|
---|
9021 | rc = ssmR3StrmPeekAt(&pSSM->Strm, pDir->aEntries[i].off, &UnitHdr, cbToRead, NULL);
|
---|
9022 | AssertLogRelRCReturn(rc, rc);
|
---|
9023 |
|
---|
9024 | AssertLogRelMsgReturn(!memcmp(UnitHdr.szMagic, SSMFILEUNITHDR_MAGIC, sizeof(UnitHdr.szMagic)),
|
---|
9025 | ("Bad unit header or dictionary offset: i=%u off=%lld\n", i, pDir->aEntries[i].off),
|
---|
9026 | VERR_SSM_INTEGRITY_UNIT);
|
---|
9027 | AssertLogRelMsgReturn(UnitHdr.offStream == pDir->aEntries[i].off,
|
---|
9028 | ("Bad unit header: i=%d off=%lld offStream=%lld\n", i, pDir->aEntries[i].off, UnitHdr.offStream),
|
---|
9029 | VERR_SSM_INTEGRITY_UNIT);
|
---|
9030 | AssertLogRelMsgReturn(UnitHdr.u32Instance == pDir->aEntries[i].u32Instance,
|
---|
9031 | ("Bad unit header: i=%d off=%lld u32Instance=%u Dir.u32Instance=%u\n",
|
---|
9032 | i, pDir->aEntries[i].off, UnitHdr.u32Instance, pDir->aEntries[i].u32Instance),
|
---|
9033 | VERR_SSM_INTEGRITY_UNIT);
|
---|
9034 | uint32_t cbUnitHdr = RT_UOFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]);
|
---|
9035 | AssertLogRelMsgReturn( UnitHdr.cbName > 0
|
---|
9036 | && UnitHdr.cbName < sizeof(UnitHdr)
|
---|
9037 | && cbUnitHdr <= cbToRead,
|
---|
9038 | ("Bad unit header: i=%u off=%lld cbName=%#x cbToRead=%#x\n", i, pDir->aEntries[i].off, UnitHdr.cbName, cbToRead),
|
---|
9039 | VERR_SSM_INTEGRITY_UNIT);
|
---|
9040 | SSM_CHECK_CRC32_RET(&UnitHdr, RT_OFFSETOF(SSMFILEUNITHDRV2, szName[UnitHdr.cbName]),
|
---|
9041 | ("Bad unit header CRC: i=%u off=%lld u32CRC=%#x u32ActualCRC=%#x\n",
|
---|
9042 | i, pDir->aEntries[i].off, u32CRC, u32ActualCRC));
|
---|
9043 |
|
---|
9044 | /*
|
---|
9045 | * Ok, it is valid, get on with the comparing now.
|
---|
9046 | */
|
---|
9047 | if ( UnitHdr.cbName == cbUnitNm
|
---|
9048 | && !memcmp(UnitHdr.szName, pszUnit, cbUnitNm))
|
---|
9049 | {
|
---|
9050 | if (piVersion)
|
---|
9051 | *piVersion = UnitHdr.u32Version;
|
---|
9052 | rc = ssmR3StrmSeek(&pSSM->Strm, pDir->aEntries[i].off + cbUnitHdr, RTFILE_SEEK_BEGIN,
|
---|
9053 | RTCrc32Process(UnitHdr.u32CurStreamCRC, &UnitHdr, cbUnitHdr));
|
---|
9054 | AssertLogRelRCReturn(rc, rc);
|
---|
9055 | ssmR3DataReadBeginV2(pSSM);
|
---|
9056 | return VINF_SUCCESS;
|
---|
9057 | }
|
---|
9058 | }
|
---|
9059 | }
|
---|
9060 |
|
---|
9061 | return VERR_SSM_UNIT_NOT_FOUND;
|
---|
9062 | }
|
---|
9063 |
|
---|
9064 |
|
---|
9065 | /**
|
---|
9066 | * Worker for SSMR3Seek that seeks version 2 saved state files.
|
---|
9067 | *
|
---|
9068 | * @returns VBox status code.
|
---|
9069 | * @param pSSM The SSM handle.
|
---|
9070 | * @param pszUnit The unit to seek to.
|
---|
9071 | * @param iInstance The particular instance we seek.
|
---|
9072 | * @param piVersion Where to store the unit version number.
|
---|
9073 | */
|
---|
9074 | static int ssmR3FileSeekV2(PSSMHANDLE pSSM, const char *pszUnit, uint32_t iInstance, uint32_t *piVersion)
|
---|
9075 | {
|
---|
9076 | /*
|
---|
9077 | * Read the footer, allocate a temporary buffer for the dictionary and
|
---|
9078 | * pass it down to a worker to simplify cleanup.
|
---|
9079 | */
|
---|
9080 | uint64_t offFooter;
|
---|
9081 | SSMFILEFTR Footer;
|
---|
9082 | int rc = ssmR3StrmPeekAt(&pSSM->Strm, -(RTFOFF)sizeof(Footer), &Footer, sizeof(Footer), &offFooter);
|
---|
9083 | AssertLogRelRCReturn(rc, rc);
|
---|
9084 | AssertLogRelReturn(!memcmp(Footer.szMagic, SSMFILEFTR_MAGIC, sizeof(Footer.szMagic)), VERR_SSM_INTEGRITY);
|
---|
9085 | SSM_CHECK_CRC32_RET(&Footer, sizeof(Footer), ("Bad footer CRC: %08x, actual %08x\n", u32CRC, u32ActualCRC));
|
---|
9086 |
|
---|
9087 | size_t const cbDir = RT_OFFSETOF(SSMFILEDIR, aEntries[Footer.cDirEntries]);
|
---|
9088 | PSSMFILEDIR pDir = (PSSMFILEDIR)RTMemTmpAlloc(cbDir);
|
---|
9089 | if (RT_UNLIKELY(!pDir))
|
---|
9090 | return VERR_NO_TMP_MEMORY;
|
---|
9091 | rc = ssmR3FileSeekSubV2(pSSM, pDir, cbDir, Footer.cDirEntries, offFooter - cbDir,
|
---|
9092 | pszUnit, iInstance, piVersion);
|
---|
9093 | RTMemTmpFree(pDir);
|
---|
9094 |
|
---|
9095 | return rc;
|
---|
9096 | }
|
---|
9097 |
|
---|
9098 |
|
---|
9099 | /**
|
---|
9100 | * Seeks to a specific data unit.
|
---|
9101 | *
|
---|
9102 | * After seeking it's possible to use the getters to on
|
---|
9103 | * that data unit.
|
---|
9104 | *
|
---|
9105 | * @returns VBox status code.
|
---|
9106 | * @returns VERR_SSM_UNIT_NOT_FOUND if the unit+instance wasn't found.
|
---|
9107 | *
|
---|
9108 | * @param pSSM The SSM handle returned by SSMR3Open().
|
---|
9109 | * @param pszUnit The name of the data unit.
|
---|
9110 | * @param iInstance The instance number.
|
---|
9111 | * @param piVersion Where to store the version number. (Optional)
|
---|
9112 | *
|
---|
9113 | * @thread Any, but the caller is responsible for serializing calls per handle.
|
---|
9114 | */
|
---|
9115 | VMMR3DECL(int) SSMR3Seek(PSSMHANDLE pSSM, const char *pszUnit, uint32_t iInstance, uint32_t *piVersion)
|
---|
9116 | {
|
---|
9117 | LogFlow(("SSMR3Seek: pSSM=%p pszUnit=%p:{%s} iInstance=%RU32 piVersion=%p\n",
|
---|
9118 | pSSM, pszUnit, pszUnit, iInstance, piVersion));
|
---|
9119 |
|
---|
9120 | /*
|
---|
9121 | * Validate input.
|
---|
9122 | */
|
---|
9123 | AssertPtrReturn(pSSM, VERR_INVALID_PARAMETER);
|
---|
9124 | AssertMsgReturn(pSSM->enmAfter == SSMAFTER_OPENED, ("%d\n", pSSM->enmAfter),VERR_INVALID_PARAMETER);
|
---|
9125 | AssertMsgReturn(pSSM->enmOp == SSMSTATE_OPEN_READ, ("%d\n", pSSM->enmOp), VERR_INVALID_PARAMETER);
|
---|
9126 | AssertPtrReturn(pszUnit, VERR_INVALID_POINTER);
|
---|
9127 | AssertMsgReturn(!piVersion || VALID_PTR(piVersion), ("%p\n", piVersion), VERR_INVALID_POINTER);
|
---|
9128 |
|
---|
9129 | /*
|
---|
9130 | * Reset the state.
|
---|
9131 | */
|
---|
9132 | if (pSSM->u.Read.pZipDecompV1)
|
---|
9133 | {
|
---|
9134 | RTZipDecompDestroy(pSSM->u.Read.pZipDecompV1);
|
---|
9135 | pSSM->u.Read.pZipDecompV1 = NULL;
|
---|
9136 | }
|
---|
9137 | pSSM->cbUnitLeftV1 = 0;
|
---|
9138 | pSSM->offUnit = UINT64_MAX;
|
---|
9139 | pSSM->offUnitUser = UINT64_MAX;
|
---|
9140 |
|
---|
9141 | /*
|
---|
9142 | * Call the version specific workers.
|
---|
9143 | */
|
---|
9144 | if (pSSM->u.Read.uFmtVerMajor >= 2)
|
---|
9145 | pSSM->rc = ssmR3FileSeekV2(pSSM, pszUnit, iInstance, piVersion);
|
---|
9146 | else
|
---|
9147 | pSSM->rc = ssmR3FileSeekV1(pSSM, pszUnit, iInstance, piVersion);
|
---|
9148 | return pSSM->rc;
|
---|
9149 | }
|
---|
9150 |
|
---|
9151 |
|
---|
9152 |
|
---|
9153 | /* ... Misc APIs ... */
|
---|
9154 | /* ... Misc APIs ... */
|
---|
9155 | /* ... Misc APIs ... */
|
---|
9156 | /* ... Misc APIs ... */
|
---|
9157 | /* ... Misc APIs ... */
|
---|
9158 | /* ... Misc APIs ... */
|
---|
9159 | /* ... Misc APIs ... */
|
---|
9160 | /* ... Misc APIs ... */
|
---|
9161 | /* ... Misc APIs ... */
|
---|
9162 | /* ... Misc APIs ... */
|
---|
9163 | /* ... Misc APIs ... */
|
---|
9164 |
|
---|
9165 |
|
---|
9166 |
|
---|
9167 | /**
|
---|
9168 | * Query what the VBox status code of the operation is.
|
---|
9169 | *
|
---|
9170 | * This can be used for putting and getting a batch of values
|
---|
9171 | * without bother checking the result till all the calls have
|
---|
9172 | * been made.
|
---|
9173 | *
|
---|
9174 | * @returns SSMAFTER enum value.
|
---|
9175 | * @param pSSM The saved state handle.
|
---|
9176 | */
|
---|
9177 | VMMR3DECL(int) SSMR3HandleGetStatus(PSSMHANDLE pSSM)
|
---|
9178 | {
|
---|
9179 | SSM_ASSERT_VALID_HANDLE(pSSM);
|
---|
9180 | return pSSM->rc;
|
---|
9181 | }
|
---|
9182 |
|
---|
9183 |
|
---|
9184 | /**
|
---|
9185 | * Fail the load operation.
|
---|
9186 | *
|
---|
9187 | * This is mainly intended for sub item loaders (like timers) which
|
---|
9188 | * return code isn't necessarily heeded by the caller but is important
|
---|
9189 | * to SSM.
|
---|
9190 | *
|
---|
9191 | * @returns VBox status code of the handle, or VERR_INVALID_PARAMETER.
|
---|
9192 | * @param pSSM The saved state handle.
|
---|
9193 | * @param iStatus Failure status code. This MUST be a VERR_*.
|
---|
9194 | */
|
---|
9195 | VMMR3DECL(int) SSMR3HandleSetStatus(PSSMHANDLE pSSM, int iStatus)
|
---|
9196 | {
|
---|
9197 | SSM_ASSERT_VALID_HANDLE(pSSM);
|
---|
9198 | Assert(pSSM->enmOp != SSMSTATE_LIVE_VOTE);
|
---|
9199 | if (RT_FAILURE(iStatus))
|
---|
9200 | {
|
---|
9201 | int rc = pSSM->rc;
|
---|
9202 | if (RT_SUCCESS(rc))
|
---|
9203 | pSSM->rc = rc = iStatus;
|
---|
9204 | return rc;
|
---|
9205 | }
|
---|
9206 | AssertMsgFailed(("iStatus=%d %Rrc\n", iStatus, iStatus));
|
---|
9207 | return VERR_INVALID_PARAMETER;
|
---|
9208 | }
|
---|
9209 |
|
---|
9210 |
|
---|
9211 | /**
|
---|
9212 | * Get what to do after this operation.
|
---|
9213 | *
|
---|
9214 | * @returns SSMAFTER enum value.
|
---|
9215 | * @param pSSM The saved state handle.
|
---|
9216 | */
|
---|
9217 | VMMR3DECL(SSMAFTER) SSMR3HandleGetAfter(PSSMHANDLE pSSM)
|
---|
9218 | {
|
---|
9219 | SSM_ASSERT_VALID_HANDLE(pSSM);
|
---|
9220 | return pSSM->enmAfter;
|
---|
9221 | }
|
---|
9222 |
|
---|
9223 |
|
---|
9224 | /**
|
---|
9225 | * Checks if it is a live save operation or not.
|
---|
9226 | *
|
---|
9227 | * @returns True if it is, false if it isn't.
|
---|
9228 | * @param pSSM The saved state handle.
|
---|
9229 | */
|
---|
9230 | VMMR3DECL(bool) SSMR3HandleIsLiveSave(PSSMHANDLE pSSM)
|
---|
9231 | {
|
---|
9232 | SSM_ASSERT_VALID_HANDLE(pSSM);
|
---|
9233 | return pSSM->fLiveSave;
|
---|
9234 | }
|
---|
9235 |
|
---|
9236 |
|
---|
9237 | /**
|
---|
9238 | * Gets the maximum downtime for a live operation.
|
---|
9239 | *
|
---|
9240 | * @returns The max downtime in milliseconds. Can be anything from 0 thru
|
---|
9241 | * UINT32_MAX.
|
---|
9242 | *
|
---|
9243 | * @param pSSM The saved state handle.
|
---|
9244 | */
|
---|
9245 | VMMR3DECL(uint32_t) SSMR3HandleMaxDowntime(PSSMHANDLE pSSM)
|
---|
9246 | {
|
---|
9247 | SSM_ASSERT_VALID_HANDLE(pSSM);
|
---|
9248 | if (pSSM->enmOp <= SSMSTATE_SAVE_DONE)
|
---|
9249 | return pSSM->u.Write.cMsMaxDowntime;
|
---|
9250 | return UINT32_MAX;
|
---|
9251 | }
|
---|
9252 |
|
---|
9253 |
|
---|
9254 | /**
|
---|
9255 | * Gets the host bit count of a saved state.
|
---|
9256 | *
|
---|
9257 | * @returns 32 or 64. If pSSM is invalid, 0 is returned.
|
---|
9258 | * @param pSSM The saved state handle.
|
---|
9259 | *
|
---|
9260 | * @remarks This method should ONLY be used for hacks when loading OLDER saved
|
---|
9261 | * state that have data layout or semantic changes without the
|
---|
9262 | * compulsory version number change.
|
---|
9263 | */
|
---|
9264 | VMMR3DECL(uint32_t) SSMR3HandleHostBits(PSSMHANDLE pSSM)
|
---|
9265 | {
|
---|
9266 | SSM_ASSERT_VALID_HANDLE(pSSM);
|
---|
9267 | return ssmR3GetHostBits(pSSM);
|
---|
9268 | }
|
---|
9269 |
|
---|
9270 |
|
---|
9271 | /**
|
---|
9272 | * Get the VirtualBox SVN revision that created the saved state.
|
---|
9273 | *
|
---|
9274 | * @returns The revision number on success.
|
---|
9275 | * form. If we don't know, it's 0.
|
---|
9276 | * @param pSSM The saved state handle.
|
---|
9277 | *
|
---|
9278 | * @remarks This method should ONLY be used for hacks when loading OLDER saved
|
---|
9279 | * state that have data layout or semantic changes without the
|
---|
9280 | * compulsory version number change. Be VERY careful with this
|
---|
9281 | * function since it will return different values for OSE builds!
|
---|
9282 | */
|
---|
9283 | VMMR3DECL(uint32_t) SSMR3HandleRevision(PSSMHANDLE pSSM)
|
---|
9284 | {
|
---|
9285 | if (pSSM->enmOp >= SSMSTATE_LOAD_PREP)
|
---|
9286 | return pSSM->u.Read.u32SvnRev;
|
---|
9287 | #ifdef SSM_STANDALONE
|
---|
9288 | return 0;
|
---|
9289 | #else
|
---|
9290 | return VMMGetSvnRev();
|
---|
9291 | #endif
|
---|
9292 | }
|
---|
9293 |
|
---|
9294 |
|
---|
9295 | /**
|
---|
9296 | * Gets the VirtualBox version that created the saved state.
|
---|
9297 | *
|
---|
9298 | * @returns VBOX_FULL_VERSION style version number.
|
---|
9299 | * Returns UINT32_MAX if unknown or somehow out of range.
|
---|
9300 | *
|
---|
9301 | * @param pSSM The saved state handle.
|
---|
9302 | *
|
---|
9303 | * @remarks This method should ONLY be used for hacks when loading OLDER saved
|
---|
9304 | * state that have data layout or semantic changes without the
|
---|
9305 | * compulsory version number change.
|
---|
9306 | */
|
---|
9307 | VMMR3DECL(uint32_t) SSMR3HandleVersion(PSSMHANDLE pSSM)
|
---|
9308 | {
|
---|
9309 | if (pSSM->enmOp >= SSMSTATE_LOAD_PREP)
|
---|
9310 | {
|
---|
9311 | if ( !pSSM->u.Read.u16VerMajor
|
---|
9312 | && !pSSM->u.Read.u16VerMinor
|
---|
9313 | && !pSSM->u.Read.u32VerBuild)
|
---|
9314 | return UINT32_MAX;
|
---|
9315 | AssertReturn(pSSM->u.Read.u16VerMajor <= 0xff, UINT32_MAX);
|
---|
9316 | AssertReturn(pSSM->u.Read.u16VerMinor <= 0xff, UINT32_MAX);
|
---|
9317 | AssertReturn(pSSM->u.Read.u32VerBuild <= 0xffff, UINT32_MAX);
|
---|
9318 | return VBOX_FULL_VERSION_MAKE(pSSM->u.Read.u16VerMajor, pSSM->u.Read.u16VerMinor, pSSM->u.Read.u32VerBuild);
|
---|
9319 | }
|
---|
9320 | return VBOX_FULL_VERSION;
|
---|
9321 | }
|
---|
9322 |
|
---|
9323 |
|
---|
9324 | /**
|
---|
9325 | * Get the host OS and architecture where the saved state was created.
|
---|
9326 | *
|
---|
9327 | * @returns Pointer to a read only string. When known, this is on the os.arch
|
---|
9328 | * form. If we don't know, it's an empty string.
|
---|
9329 | * @param pSSM The saved state handle.
|
---|
9330 | *
|
---|
9331 | * @remarks This method should ONLY be used for hacks when loading OLDER saved
|
---|
9332 | * state that have data layout or semantic changes without the
|
---|
9333 | * compulsory version number change.
|
---|
9334 | */
|
---|
9335 | VMMR3DECL(const char *) SSMR3HandleHostOSAndArch(PSSMHANDLE pSSM)
|
---|
9336 | {
|
---|
9337 | if (pSSM->enmOp >= SSMSTATE_LOAD_PREP)
|
---|
9338 | return pSSM->u.Read.szHostOSAndArch;
|
---|
9339 | return KBUILD_TARGET "." KBUILD_TARGET_ARCH;
|
---|
9340 | }
|
---|
9341 |
|
---|
9342 |
|
---|
9343 | #ifndef SSM_STANDALONE
|
---|
9344 | /**
|
---|
9345 | * Asynchronously cancels the current SSM operation ASAP.
|
---|
9346 | *
|
---|
9347 | * @returns VBox status code.
|
---|
9348 | * @retval VINF_SUCCESS on success.
|
---|
9349 | * @retval VERR_SSM_NO_PENDING_OPERATION if nothing around that can be
|
---|
9350 | * cancelled.
|
---|
9351 | * @retval VERR_SSM_ALREADY_CANCELLED if the operation as already been
|
---|
9352 | * cancelled.
|
---|
9353 | *
|
---|
9354 | * @param pUVM The VM handle.
|
---|
9355 | *
|
---|
9356 | * @thread Any.
|
---|
9357 | */
|
---|
9358 | VMMR3DECL(int) SSMR3Cancel(PUVM pUVM)
|
---|
9359 | {
|
---|
9360 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
9361 | PVM pVM = pUVM->pVM;
|
---|
9362 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
9363 |
|
---|
9364 | int rc = RTCritSectEnter(&pVM->ssm.s.CancelCritSect);
|
---|
9365 | AssertRCReturn(rc, rc);
|
---|
9366 |
|
---|
9367 | PSSMHANDLE pSSM = pVM->ssm.s.pSSM;
|
---|
9368 | if (pSSM)
|
---|
9369 | {
|
---|
9370 | uint32_t u32Old;
|
---|
9371 | if (ASMAtomicCmpXchgExU32(&pSSM->fCancelled, SSMHANDLE_CANCELLED, SSMHANDLE_OK, &u32Old))
|
---|
9372 | {
|
---|
9373 | LogRel(("SSM: Cancelled pending operation\n"));
|
---|
9374 | rc = VINF_SUCCESS;
|
---|
9375 | }
|
---|
9376 | else if (u32Old == SSMHANDLE_CANCELLED)
|
---|
9377 | rc = VERR_SSM_ALREADY_CANCELLED;
|
---|
9378 | else
|
---|
9379 | {
|
---|
9380 | AssertLogRelMsgFailed(("fCancelled=%RX32 enmOp=%d\n", u32Old, pSSM->enmOp));
|
---|
9381 | rc = VERR_SSM_IPE_3;
|
---|
9382 | }
|
---|
9383 | }
|
---|
9384 | else
|
---|
9385 | rc = VERR_SSM_NO_PENDING_OPERATION;
|
---|
9386 |
|
---|
9387 | RTCritSectLeave(&pVM->ssm.s.CancelCritSect);
|
---|
9388 | return rc;
|
---|
9389 | }
|
---|
9390 | #endif /* !SSM_STANDALONE */
|
---|
9391 |
|
---|