HGCMInternal.cpp@ 28112

Last change on this file since 28112 was 26425, checked in by vboxsync, 15 years ago
alternative license for VBoxGuestLib is CDDL
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1	/* $Revision: 26425 $ */
2	/** @file
3	* VBoxGuestLib - Host-Guest Communication Manager internal functions, implemented by VBoxGuest
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*
26	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31	/* Entire file is ifdef'ed with VBGL_VBOXGUEST */
32	#ifdef VBGL_VBOXGUEST
33
34	/*******************************************************************************
35	* Header Files *
36	*******************************************************************************/
37	#include "VBGLInternal.h"
38	#include <iprt/alloca.h>
39	#include <iprt/asm.h>
40	#include <iprt/assert.h>
41	#include <iprt/mem.h>
42	#include <iprt/memobj.h>
43	#include <iprt/string.h>
44	#include <iprt/thread.h>
45	#include <iprt/time.h>
46
47
48	/*******************************************************************************
49	* Defined Constants And Macros *
50	*******************************************************************************/
51	/** The max parameter buffer size for a user request. */
52	#define VBGLR0_MAX_HGCM_USER_PARM (16*_1M)
53	/** The max parameter buffer size for a kernel request. */
54	#define VBGLR0_MAX_HGCM_KERNEL_PARM (16*_1M)
55	#ifdef RT_OS_LINUX
56	/** Linux needs to use bounce buffers since RTR0MemObjLockUser has unwanted
57	* side effects. */
58	# define USE_BOUNCE_BUFFERS
59	#endif
60
61
62	/*******************************************************************************
63	* Structures and Typedefs *
64	*******************************************************************************/
65	/**
66	* Lock info structure used by VbglR0HGCMInternalCall and its helpers.
67	*/
68	struct VbglR0ParmInfo
69	{
70	uint32_t cLockBufs;
71	struct
72	{
73	uint32_t iParm;
74	RTR0MEMOBJ hObj;
75	#ifdef USE_BOUNCE_BUFFERS
76	void *pvSmallBuf;
77	#endif
78	} aLockBufs[10];
79	};
80
81
82
83	/* These functions can be only used by VBoxGuest. */
84
85	DECLVBGL(int) VbglR0HGCMInternalConnect (VBoxGuestHGCMConnectInfo *pConnectInfo,
86	PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
87	{
88	VMMDevHGCMConnect *pHGCMConnect;
89	int rc;
90
91	if (!pConnectInfo \|\| !pfnAsyncCallback)
92	return VERR_INVALID_PARAMETER;
93
94	pHGCMConnect = NULL;
95
96	/* Allocate request */
97	rc = VbglGRAlloc ((VMMDevRequestHeader **)&pHGCMConnect, sizeof (VMMDevHGCMConnect), VMMDevReq_HGCMConnect);
98
99	if (RT_SUCCESS(rc))
100	{
101	/* Initialize request memory */
102	pHGCMConnect->header.fu32Flags = 0;
103
104	memcpy (&pHGCMConnect->loc, &pConnectInfo->Loc, sizeof (HGCMServiceLocation));
105	pHGCMConnect->u32ClientID = 0;
106
107	/* Issue request */
108	rc = VbglGRPerform (&pHGCMConnect->header.header);
109
110	if (RT_SUCCESS(rc))
111	{
112	/* Check if host decides to process the request asynchronously. */
113	if (rc == VINF_HGCM_ASYNC_EXECUTE)
114	{
115	/* Wait for request completion interrupt notification from host */
116	pfnAsyncCallback (&pHGCMConnect->header, pvAsyncData, u32AsyncData);
117	}
118
119	pConnectInfo->result = pHGCMConnect->header.result;
120
121	if (RT_SUCCESS (pConnectInfo->result))
122	pConnectInfo->u32ClientID = pHGCMConnect->u32ClientID;
123	}
124
125	VbglGRFree (&pHGCMConnect->header.header);
126	}
127
128	return rc;
129	}
130
131
132	DECLR0VBGL(int) VbglR0HGCMInternalDisconnect (VBoxGuestHGCMDisconnectInfo *pDisconnectInfo,
133	PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
134	{
135	VMMDevHGCMDisconnect *pHGCMDisconnect;
136	int rc;
137
138	if (!pDisconnectInfo \|\| !pfnAsyncCallback)
139	return VERR_INVALID_PARAMETER;
140
141	pHGCMDisconnect = NULL;
142
143	/* Allocate request */
144	rc = VbglGRAlloc ((VMMDevRequestHeader **)&pHGCMDisconnect, sizeof (VMMDevHGCMDisconnect), VMMDevReq_HGCMDisconnect);
145
146	if (RT_SUCCESS(rc))
147	{
148	/* Initialize request memory */
149	pHGCMDisconnect->header.fu32Flags = 0;
150
151	pHGCMDisconnect->u32ClientID = pDisconnectInfo->u32ClientID;
152
153	/* Issue request */
154	rc = VbglGRPerform (&pHGCMDisconnect->header.header);
155
156	if (RT_SUCCESS(rc))
157	{
158	/* Check if host decides to process the request asynchronously. */
159	if (rc == VINF_HGCM_ASYNC_EXECUTE)
160	{
161	/* Wait for request completion interrupt notification from host */
162	pfnAsyncCallback (&pHGCMDisconnect->header, pvAsyncData, u32AsyncData);
163	}
164
165	pDisconnectInfo->result = pHGCMDisconnect->header.result;
166	}
167
168	VbglGRFree (&pHGCMDisconnect->header.header);
169	}
170
171	return rc;
172	}
173
174
175	/**
176	* Preprocesses the HGCM call, validating and locking/buffering parameters.
177	*
178	* @returns VBox status code.
179	*
180	* @param pCallInfo The call info.
181	* @param cbCallInfo The size of the call info structure.
182	* @param fIsUser Is it a user request or kernel request.
183	* @param pcbExtra Where to return the extra request space needed for
184	* physical page lists.
185	*/
186	static int vbglR0HGCMInternalPreprocessCall(VBoxGuestHGCMCallInfo const *pCallInfo, uint32_t cbCallInfo,
187	bool fIsUser, struct VbglR0ParmInfo pParmInfo, size_t pcbExtra)
188	{
189	HGCMFunctionParameter const *pSrcParm = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo);
190	uint32_t cParms = pCallInfo->cParms;
191	uint32_t iParm;
192	uint32_t cb;
193
194	/*
195	* Lock down the any linear buffers so we can get their addresses
196	* and figure out how much extra storage we need for page lists.
197	*
198	* Note! With kernel mode users we can be assertive. For user mode users
199	* we should just (debug) log it and fail without any fanfare.
200	*/
201	*pcbExtra = 0;
202	pParmInfo->cLockBufs = 0;
203	for (iParm = 0; iParm < cParms; iParm++, pSrcParm++)
204	{
205	switch (pSrcParm->type)
206	{
207	case VMMDevHGCMParmType_32bit:
208	Log4(("GstHGCMCall: parm=%u type=32bit: %#010x\n", iParm, pSrcParm->u.value32));
209	break;
210
211	case VMMDevHGCMParmType_64bit:
212	Log4(("GstHGCMCall: parm=%u type=64bit: %#018x\n", iParm, pSrcParm->u.value64));
213	break;
214
215	case VMMDevHGCMParmType_PageList:
216	if (fIsUser)
217	return VERR_INVALID_PARAMETER;
218	cb = pSrcParm->u.PageList.size;
219	if (cb)
220	{
221	uint32_t off = pSrcParm->u.PageList.offset;
222	HGCMPageListInfo *pPgLst;
223	uint32_t cPages;
224	uint32_t u32;
225
226	AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_KERNEL_PARM, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_KERNEL_PARM),
227	VERR_OUT_OF_RANGE);
228	AssertMsgReturn( off >= pCallInfo->cParms * sizeof(HGCMFunctionParameter)
229	&& off <= cbCallInfo - sizeof(HGCMPageListInfo),
230	("offset=%#x cParms=%#x cbCallInfo=%#x\n", off, pCallInfo->cParms, cbCallInfo),
231	VERR_INVALID_PARAMETER);
232
233	pPgLst = (HGCMPageListInfo )((uint8_t )pCallInfo + off);
234	cPages = pPgLst->cPages;
235	u32 = RT_OFFSETOF(HGCMPageListInfo, aPages[cPages]) + off;
236	AssertMsgReturn(u32 <= cbCallInfo,
237	("u32=%#x (cPages=%#x offset=%#x) cbCallInfo=%#x\n", u32, cPages, off, cbCallInfo),
238	VERR_INVALID_PARAMETER);
239	AssertMsgReturn(pPgLst->offFirstPage < PAGE_SIZE, ("#x\n", pPgLst->offFirstPage), VERR_INVALID_PARAMETER);
240	u32 = RT_ALIGN_32(pPgLst->offFirstPage + cb, PAGE_SIZE) >> PAGE_SHIFT;
241	AssertMsgReturn(cPages == u32, ("cPages=%#x u32=%#x\n", cPages, u32), VERR_INVALID_PARAMETER);
242	AssertMsgReturn(VBOX_HGCM_F_PARM_ARE_VALID(pPgLst->flags), ("%#x\n", pPgLst->flags), VERR_INVALID_PARAMETER);
243	Log4(("GstHGCMCall: parm=%u type=pglst: cb=%#010x cPgs=%u offPg0=%#x flags=%#x\n",
244	iParm, cb, cPages, pPgLst->offFirstPage, pPgLst->flags));
245	u32 = cPages;
246	while (u32-- > 0)
247	{
248	Log4(("GstHGCMCall: pg#%u=%RHp\n", u32, pPgLst->aPages[u32]));
249	AssertMsgReturn(!(pPgLst->aPages[u32] & (PAGE_OFFSET_MASK \| UINT64_C(0xfff0000000000000))),
250	("pg#%u=%RHp\n", u32, pPgLst->aPages[u32]),
251	VERR_INVALID_PARAMETER);
252	}
253
254	*pcbExtra += RT_OFFSETOF(HGCMPageListInfo, aPages[pPgLst->cPages]);
255	}
256	else
257	Log4(("GstHGCMCall: parm=%u type=pglst: cb=0\n", iParm));
258	break;
259
260	case VMMDevHGCMParmType_LinAddr_Locked_In:
261	case VMMDevHGCMParmType_LinAddr_Locked_Out:
262	case VMMDevHGCMParmType_LinAddr_Locked:
263	if (fIsUser)
264	return VERR_INVALID_PARAMETER;
265	if (!VBGLR0_CAN_USE_PHYS_PAGE_LIST())
266	{
267	cb = pSrcParm->u.Pointer.size;
268	AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_KERNEL_PARM, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_KERNEL_PARM),
269	VERR_OUT_OF_RANGE);
270	if (cb != 0)
271	Log4(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p\n",
272	iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr));
273	else
274	Log4(("GstHGCMCall: parm=%u type=%#x: cb=0\n", iParm, pSrcParm->type));
275	break;
276	}
277	/* fall thru */
278
279	case VMMDevHGCMParmType_LinAddr_In:
280	case VMMDevHGCMParmType_LinAddr_Out:
281	case VMMDevHGCMParmType_LinAddr:
282	cb = pSrcParm->u.Pointer.size;
283	if (cb != 0)
284	{
285	#ifdef USE_BOUNCE_BUFFERS
286	void *pvSmallBuf = NULL;
287	#endif
288	uint32_t iLockBuf = pParmInfo->cLockBufs;
289	RTR0MEMOBJ hObj;
290	int rc;
291	uint32_t fAccess = pSrcParm->type == VMMDevHGCMParmType_LinAddr_In
292	\|\| pSrcParm->type == VMMDevHGCMParmType_LinAddr_Locked_In
293	? RTMEM_PROT_READ
294	: RTMEM_PROT_READ \| RTMEM_PROT_WRITE;
295
296	AssertReturn(iLockBuf < RT_ELEMENTS(pParmInfo->aLockBufs), VERR_INVALID_PARAMETER);
297	if (!fIsUser)
298	{
299	AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_KERNEL_PARM, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_KERNEL_PARM),
300	VERR_OUT_OF_RANGE);
301	rc = RTR0MemObjLockKernel(&hObj, (void *)pSrcParm->u.Pointer.u.linearAddr, cb, fAccess);
302	if (RT_FAILURE(rc))
303	{
304	Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemObjLockKernel(,%p,%#x) -> %Rrc\n",
305	pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, pSrcParm->u.Pointer.u.linearAddr, cb, rc));
306	return rc;
307	}
308	Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p locked kernel -> %p\n",
309	iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, hObj));
310	}
311	else
312	{
313	if (cb > VBGLR0_MAX_HGCM_USER_PARM)
314	{
315	Log(("GstHGCMCall: id=%#x fn=%u parm=%u pv=%p cb=%#x > %#x -> out of range\n",
316	pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, pSrcParm->u.Pointer.u.linearAddr,
317	cb, VBGLR0_MAX_HGCM_USER_PARM));
318	return VERR_OUT_OF_RANGE;
319	}
320
321	#ifndef USE_BOUNCE_BUFFERS
322	rc = RTR0MemObjLockUser(&hObj, (RTR3PTR)pSrcParm->u.Pointer.u.linearAddr, cb, fAccess, NIL_RTR0PROCESS);
323	if (RT_FAILURE(rc))
324	{
325	Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemObjLockUser(,%p,%#x,nil) -> %Rrc\n",
326	pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, pSrcParm->u.Pointer.u.linearAddr, cb, rc));
327	return rc;
328	}
329	Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p locked user -> %p\n",
330	iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, hObj));
331
332	#else /* USE_BOUNCE_BUFFERS */
333	/*
334	* This is a bit massive, but we don't want to waste a
335	* whole page for a 3 byte string buffer (guest props).
336	*
337	* The threshold is ASSUMING sizeof(RTMEMHDR) == 16 and
338	* the system is using some power of two allocator.
339	*/
340	/** @todo A more efficient strategy would be to combine buffers. However it
341	* is probably going to be more massive than the current code, so
342	* it can wait till later. */
343	bool fCopyIn = pSrcParm->type != VMMDevHGCMParmType_LinAddr_Out
344	&& pSrcParm->type != VMMDevHGCMParmType_LinAddr_Locked_Out;
345	if (cb <= PAGE_SIZE / 2 - 16)
346	{
347	pvSmallBuf = fCopyIn ? RTMemTmpAlloc(cb) : RTMemTmpAllocZ(cb);
348	if (RT_UNLIKELY(!pvSmallBuf))
349	return VERR_NO_MEMORY;
350	if (fCopyIn)
351	{
352	rc = RTR0MemUserCopyFrom(pvSmallBuf, pSrcParm->u.Pointer.u.linearAddr, cb);
353	if (RT_FAILURE(rc))
354	{
355	RTMemTmpFree(pvSmallBuf);
356	Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemUserCopyFrom(,%p,%#x) -> %Rrc\n",
357	pCallInfo->u32ClientID, pCallInfo->u32Function, iParm,
358	pSrcParm->u.Pointer.u.linearAddr, cb, rc));
359	return rc;
360	}
361	}
362	rc = RTR0MemObjLockKernel(&hObj, pvSmallBuf, cb, fAccess);
363	if (RT_FAILURE(rc))
364	{
365	RTMemTmpFree(pvSmallBuf);
366	Log(("GstHGCMCall: RTR0MemObjLockKernel failed for small buffer: rc=%Rrc pvSmallBuf=%p cb=%#x\n",
367	rc, pvSmallBuf, cb));
368	return rc;
369	}
370	Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p small buffer %p -> %p\n",
371	iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, pvSmallBuf, hObj));
372	}
373	else
374	{
375	rc = RTR0MemObjAllocPage(&hObj, cb, false /fExecutable/);
376	if (RT_FAILURE(rc))
377	return rc;
378	if (!fCopyIn)
379	memset(RTR0MemObjAddress(hObj), '\0', cb);
380	else
381	{
382	rc = RTR0MemUserCopyFrom(RTR0MemObjAddress(hObj), pSrcParm->u.Pointer.u.linearAddr, cb);
383	if (RT_FAILURE(rc))
384	{
385	RTR0MemObjFree(hObj, false /fFreeMappings/);
386	Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemUserCopyFrom(,%p,%#x) -> %Rrc\n",
387	pCallInfo->u32ClientID, pCallInfo->u32Function, iParm,
388	pSrcParm->u.Pointer.u.linearAddr, cb, rc));
389	return rc;
390	}
391	}
392	Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p big buffer -> %p\n",
393	iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, hObj));
394	}
395	#endif /* USE_BOUNCE_BUFFERS */
396	}
397
398	pParmInfo->aLockBufs[iLockBuf].iParm = iParm;
399	pParmInfo->aLockBufs[iLockBuf].hObj = hObj;
400	#ifdef USE_BOUNCE_BUFFERS
401	pParmInfo->aLockBufs[iLockBuf].pvSmallBuf = pvSmallBuf;
402	#endif
403	pParmInfo->cLockBufs = iLockBuf + 1;
404
405	if (VBGLR0_CAN_USE_PHYS_PAGE_LIST())
406	{
407	size_t cPages = RTR0MemObjSize(hObj);
408	*pcbExtra += RT_OFFSETOF(HGCMPageListInfo, aPages[cPages]);
409	}
410	}
411	else
412	Log4(("GstHGCMCall: parm=%u type=%#x: cb=0\n", iParm, pSrcParm->type));
413	break;
414
415	default:
416	return VERR_INVALID_PARAMETER;
417	}
418	}
419
420	return VINF_SUCCESS;
421	}
422
423
424	/**
425	* Translates locked linear address to the normal type.
426	* The locked types are only for the guest side and not handled by the host.
427	*
428	* @returns normal linear address type.
429	* @param enmType The type.
430	*/
431	static HGCMFunctionParameterType vbglR0HGCMInternalConvertLinAddrType(HGCMFunctionParameterType enmType)
432	{
433	switch (enmType)
434	{
435	case VMMDevHGCMParmType_LinAddr_Locked_In:
436	return VMMDevHGCMParmType_LinAddr_In;
437	case VMMDevHGCMParmType_LinAddr_Locked_Out:
438	return VMMDevHGCMParmType_LinAddr_Out;
439	case VMMDevHGCMParmType_LinAddr_Locked:
440	return VMMDevHGCMParmType_LinAddr;
441	default:
442	return enmType;
443	}
444	}
445
446
447	/**
448	* Translates linear address types to page list direction flags.
449	*
450	* @returns page list flags.
451	* @param enmType The type.
452	*/
453	static uint32_t vbglR0HGCMInternalLinAddrTypeToPageListFlags(HGCMFunctionParameterType enmType)
454	{
455	switch (enmType)
456	{
457	case VMMDevHGCMParmType_LinAddr_In:
458	case VMMDevHGCMParmType_LinAddr_Locked_In:
459	return VBOX_HGCM_F_PARM_DIRECTION_TO_HOST;
460
461	case VMMDevHGCMParmType_LinAddr_Out:
462	case VMMDevHGCMParmType_LinAddr_Locked_Out:
463	return VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST;
464
465	default: AssertFailed();
466	case VMMDevHGCMParmType_LinAddr:
467	case VMMDevHGCMParmType_LinAddr_Locked:
468	return VBOX_HGCM_F_PARM_DIRECTION_BOTH;
469	}
470	}
471
472
473	/**
474	* Initializes the call request that we're sending to the host.
475	*
476	* @returns VBox status code.
477	*
478	* @param pCallInfo The call info.
479	* @param cbCallInfo The size of the call info structure.
480	* @param fIsUser Is it a user request or kernel request.
481	* @param pcbExtra Where to return the extra request space needed for
482	* physical page lists.
483	*/
484	static void vbglR0HGCMInternalInitCall(VMMDevHGCMCall pHGCMCall, VBoxGuestHGCMCallInfo const pCallInfo,
485	uint32_t cbCallInfo, bool fIsUser, struct VbglR0ParmInfo *pParmInfo)
486	{
487	HGCMFunctionParameter const *pSrcParm = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo);
488	HGCMFunctionParameter *pDstParm = VMMDEV_HGCM_CALL_PARMS(pHGCMCall);
489	uint32_t cParms = pCallInfo->cParms;
490	uint32_t offExtra = (uintptr_t)(pDstParm + cParms) - (uintptr_t)pHGCMCall;
491	uint32_t iLockBuf = 0;
492	uint32_t iParm;
493
494
495	/*
496	* The call request headers.
497	*/
498	pHGCMCall->header.fu32Flags = 0;
499	pHGCMCall->header.result = VINF_SUCCESS;
500
501	pHGCMCall->u32ClientID = pCallInfo->u32ClientID;
502	pHGCMCall->u32Function = pCallInfo->u32Function;
503	pHGCMCall->cParms = cParms;
504
505	/*
506	* The parameters.
507	*/
508	for (iParm = 0; iParm < pCallInfo->cParms; iParm++, pSrcParm++, pDstParm++)
509	{
510	switch (pSrcParm->type)
511	{
512	case VMMDevHGCMParmType_32bit:
513	case VMMDevHGCMParmType_64bit:
514	pDstParm = pSrcParm;
515	break;
516
517	case VMMDevHGCMParmType_PageList:
518	pDstParm->type = VMMDevHGCMParmType_PageList;
519	pDstParm->u.PageList.size = pSrcParm->u.PageList.size;
520	if (pSrcParm->u.PageList.size)
521	{
522	HGCMPageListInfo const pSrcPgLst = (HGCMPageListInfo )((uint8_t *)pCallInfo + pSrcParm->u.PageList.offset);
523	HGCMPageListInfo pDstPgLst = (HGCMPageListInfo )((uint8_t *)pHGCMCall + offExtra);
524	uint32_t const cPages = pSrcPgLst->cPages;
525	uint32_t iPage;
526
527	pDstParm->u.PageList.offset = offExtra;
528	pDstPgLst->flags = pSrcPgLst->flags;
529	pDstPgLst->offFirstPage = pSrcPgLst->offFirstPage;
530	pDstPgLst->cPages = cPages;
531	for (iPage = 0; iPage < cPages; iPage++)
532	pDstPgLst->aPages[iPage] = pSrcPgLst->aPages[iPage];
533
534	offExtra += RT_OFFSETOF(HGCMPageListInfo, aPages[cPages]);
535	}
536	else
537	pDstParm->u.PageList.offset = 0;
538	break;
539
540	case VMMDevHGCMParmType_LinAddr_Locked_In:
541	case VMMDevHGCMParmType_LinAddr_Locked_Out:
542	case VMMDevHGCMParmType_LinAddr_Locked:
543	if (!VBGLR0_CAN_USE_PHYS_PAGE_LIST())
544	{
545	pDstParm = pSrcParm;
546	pDstParm->type = vbglR0HGCMInternalConvertLinAddrType(pSrcParm->type);
547	break;
548	}
549	/* fall thru */
550
551	case VMMDevHGCMParmType_LinAddr_In:
552	case VMMDevHGCMParmType_LinAddr_Out:
553	case VMMDevHGCMParmType_LinAddr:
554	if (pSrcParm->u.Pointer.size != 0)
555	{
556	#ifdef USE_BOUNCE_BUFFERS
557	void *pvSmallBuf = pParmInfo->aLockBufs[iLockBuf].pvSmallBuf;
558	#endif
559	RTR0MEMOBJ hObj = pParmInfo->aLockBufs[iLockBuf].hObj;
560	Assert(iParm == pParmInfo->aLockBufs[iLockBuf].iParm);
561
562	if (VBGLR0_CAN_USE_PHYS_PAGE_LIST())
563	{
564	HGCMPageListInfo pDstPgLst = (HGCMPageListInfo )((uint8_t *)pHGCMCall + offExtra);
565	size_t const cPages = RTR0MemObjSize(hObj) >> PAGE_SHIFT;
566	size_t iPage;
567
568	pDstParm->type = VMMDevHGCMParmType_PageList;
569	pDstParm->u.PageList.size = pSrcParm->u.Pointer.size;
570	pDstParm->u.PageList.offset = offExtra;
571	pDstPgLst->flags = vbglR0HGCMInternalLinAddrTypeToPageListFlags(pSrcParm->type);
572	#ifdef USE_BOUNCE_BUFFERS
573	if (fIsUser)
574	pDstPgLst->offFirstPage = (uintptr_t)pvSmallBuf & PAGE_OFFSET_MASK;
575	else
576	#endif
577	pDstPgLst->offFirstPage = pSrcParm->u.Pointer.u.linearAddr & PAGE_OFFSET_MASK;
578	pDstPgLst->cPages = cPages; Assert(pDstPgLst->cPages == cPages);
579	for (iPage = 0; iPage < cPages; iPage++)
580	{
581	pDstPgLst->aPages[iPage] = RTR0MemObjGetPagePhysAddr(hObj, iPage);
582	Assert(pDstPgLst->aPages[iPage] != NIL_RTHCPHYS);
583	}
584
585	offExtra += RT_OFFSETOF(HGCMPageListInfo, aPages[cPages]);
586	}
587	else
588	{
589	pDstParm->type = vbglR0HGCMInternalConvertLinAddrType(pSrcParm->type);
590	pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size;
591	#ifdef USE_BOUNCE_BUFFERS
592	if (fIsUser)
593	pDstParm->u.Pointer.u.linearAddr = pvSmallBuf
594	? (uintptr_t)pvSmallBuf
595	: (uintptr_t)RTR0MemObjAddress(hObj);
596	else
597	#endif
598	pDstParm->u.Pointer.u.linearAddr = pSrcParm->u.Pointer.u.linearAddr;
599	}
600	iLockBuf++;
601	}
602	else
603	{
604	pDstParm->type = vbglR0HGCMInternalConvertLinAddrType(pSrcParm->type);
605	pDstParm->u.Pointer.size = 0;
606	pDstParm->u.Pointer.u.linearAddr = 0;
607	}
608	break;
609
610	default:
611	AssertFailed();
612	pDstParm->type = VMMDevHGCMParmType_Invalid;
613	break;
614	}
615	}
616	}
617
618
619	/**
620	* Performs the call and completion wait.
621	*
622	* @returns VBox status code of this operation, not necessarily the call.
623	*
624	* @param pHGCMCall The HGCM call info.
625	* @param pfnAsyncCallback The async callback that will wait for the call
626	* to complete.
627	* @param pvAsyncData Argument for the callback.
628	* @param u32AsyncData Argument for the callback.
629	* @param pfLeakIt Where to return the leak it / free it,
630	* indicator. Cancellation fun.
631	*/
632	static int vbglR0HGCMInternalDoCall(VMMDevHGCMCall *pHGCMCall, PFNVBGLHGCMCALLBACK pfnAsyncCallback,
633	void pvAsyncData, uint32_t u32AsyncData, bool pfLeakIt)
634	{
635	int rc;
636
637	Log(("calling VbglGRPerform\n"));
638	rc = VbglGRPerform(&pHGCMCall->header.header);
639	Log(("VbglGRPerform rc = %Rrc (header rc=%d)\n", rc, pHGCMCall->header.result));
640
641	/*
642	* If the call failed, but as a result of the request itself, then pretend
643	* success. Upper layers will interpret the result code in the packet.
644	*/
645	if ( RT_FAILURE(rc)
646	&& rc == pHGCMCall->header.result)
647	{
648	Assert(pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE);
649	rc = VINF_SUCCESS;
650	}
651
652	/*
653	* Check if host decides to process the request asynchronously,
654	* if so, we wait for it to complete using the caller supplied callback.
655	*/
656	*pfLeakIt = false;
657	if (rc == VINF_HGCM_ASYNC_EXECUTE)
658	{
659	Log(("Processing HGCM call asynchronously\n"));
660	rc = pfnAsyncCallback(&pHGCMCall->header, pvAsyncData, u32AsyncData);
661	if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE)
662	{
663	Assert(!(pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_CANCELLED));
664	rc = VINF_SUCCESS;
665	}
666	else
667	{
668	/*
669	* The request didn't complete in time or the call was interrupted,
670	* the RC from the callback indicates which. Try cancel the request.
671	*
672	* This is a bit messy because we're racing request completion. Sorry.
673	*/
674	/** @todo It would be nice if we could use the waiter callback to do further
675	* waiting in case of a completion race. If it wasn't for WINNT having its own
676	* version of all that stuff, I would've done it already. */
677	VMMDevHGCMCancel2 *pCancelReq;
678	int rc2 = VbglGRAlloc((VMMDevRequestHeader *)&pCancelReq, sizeof(pCancelReq), VMMDevReq_HGCMCancel2);
679	if (RT_SUCCESS(rc2))
680	{
681	pCancelReq->physReqToCancel = VbglPhysHeapGetPhysAddr(pHGCMCall);
682	rc2 = VbglGRPerform(&pCancelReq->header);
683	VbglGRFree(&pCancelReq->header);
684	}
685	#if 1 /** @todo ADDVER: Remove this on next minor version change. */
686	if (rc2 == VERR_NOT_IMPLEMENTED)
687	{
688	/* host is too old, or we're out of heap. */
689	pHGCMCall->header.fu32Flags \|= VBOX_HGCM_REQ_CANCELLED;
690	pHGCMCall->header.header.requestType = VMMDevReq_HGCMCancel;
691	rc2 = VbglGRPerform(&pHGCMCall->header.header);
692	if (rc2 == VERR_INVALID_PARAMETER)
693	rc2 = VERR_NOT_FOUND;
694	else if (RT_SUCCESS(rc))
695	RTThreadSleep(1);
696	}
697	#endif
698	if (RT_SUCCESS(rc)) rc = VERR_INTERRUPTED; /** @todo weed this out from the WINNT VBoxGuest code. */
699	if (RT_SUCCESS(rc2))
700	{
701	Log(("vbglR0HGCMInternalDoCall: successfully cancelled\n"));
702	pHGCMCall->header.fu32Flags \|= VBOX_HGCM_REQ_CANCELLED;
703	}
704	else
705	{
706	/*
707	* Wait for a bit while the host (hopefully) completes it.
708	*/
709	uint64_t u64Start = RTTimeSystemMilliTS();
710	uint32_t cMilliesToWait = rc2 == VERR_NOT_FOUND \|\| rc2 == VERR_SEM_DESTROYED ? 500 : 2000;
711	uint64_t cElapsed = 0;
712	if (rc2 != VERR_NOT_FOUND)
713	LogRel(("vbglR0HGCMInternalDoCall: Failed to cancel the HGCM call on %Rrc: rc2=%Rrc\n", rc, rc2));
714	else
715	Log(("vbglR0HGCMInternalDoCall: Cancel race rc=%Rrc rc2=%Rrc\n", rc, rc2));
716
717	do
718	{
719	ASMCompilerBarrier(); /* paranoia */
720	if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE)
721	break;
722	RTThreadSleep(1);
723	cElapsed = RTTimeSystemMilliTS() - u64Start;
724	} while (cElapsed < cMilliesToWait);
725
726	ASMCompilerBarrier(); /* paranoia^2 */
727	if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE)
728	rc = VINF_SUCCESS;
729	else
730	{
731	LogRel(("vbglR0HGCMInternalDoCall: Leaking %u bytes. Pending call to %u with %u parms. (rc2=%Rrc)\n",
732	pHGCMCall->header.header.size, pHGCMCall->u32Function, pHGCMCall->cParms, rc2));
733	*pfLeakIt = true;
734	}
735	Log(("vbglR0HGCMInternalDoCall: Cancel race ended with rc=%Rrc (rc2=%Rrc) after %llu ms\n", rc, rc2, cElapsed));
736	}
737	}
738	}
739
740	Log(("GstHGCMCall: rc=%Rrc result=%Rrc fu32Flags=%#x fLeakIt=%d\n",
741	rc, pHGCMCall->header.result, pHGCMCall->header.fu32Flags, *pfLeakIt));
742	return rc;
743	}
744
745
746	/**
747	* Copies the result of the call back to the caller info structure and user
748	* buffers (if using bounce buffers).
749	*
750	* @returns rc, unless RTR0MemUserCopyTo fails.
751	* @param pCallInfo Call info structure to update.
752	* @param pHGCMCall HGCM call request.
753	* @param pParmInfo Paramter locking/buffering info.
754	* @param fIsUser Is it a user (true) or kernel request.
755	* @param rc The current result code. Passed along to
756	* preserve informational status codes.
757	*/
758	static int vbglR0HGCMInternalCopyBackResult(VBoxGuestHGCMCallInfo pCallInfo, VMMDevHGCMCall const pHGCMCall,
759	struct VbglR0ParmInfo *pParmInfo, bool fIsUser, int rc)
760	{
761	HGCMFunctionParameter const *pSrcParm = VMMDEV_HGCM_CALL_PARMS(pHGCMCall);
762	HGCMFunctionParameter *pDstParm = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo);
763	uint32_t cParms = pCallInfo->cParms;
764	#ifdef USE_BOUNCE_BUFFERS
765	uint32_t iLockBuf = 0;
766	#endif
767	uint32_t iParm;
768
769	/*
770	* The call result.
771	*/
772	pCallInfo->result = pHGCMCall->header.result;
773
774	/*
775	* Copy back parameters.
776	*/
777	for (iParm = 0; iParm < pCallInfo->cParms; iParm++, pSrcParm++, pDstParm++)
778	{
779	switch (pDstParm->type)
780	{
781	case VMMDevHGCMParmType_32bit:
782	case VMMDevHGCMParmType_64bit:
783	pDstParm = pSrcParm;
784	break;
785
786	case VMMDevHGCMParmType_PageList:
787	pDstParm->u.PageList.size = pSrcParm->u.PageList.size;
788	break;
789
790	case VMMDevHGCMParmType_LinAddr_Locked_In:
791	case VMMDevHGCMParmType_LinAddr_In:
792	#ifdef USE_BOUNCE_BUFFERS
793	if ( fIsUser
794	&& iLockBuf < pParmInfo->cLockBufs
795	&& iParm == pParmInfo->aLockBufs[iLockBuf].iParm)
796	iLockBuf++;
797	#endif
798	pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size;
799	break;
800
801	case VMMDevHGCMParmType_LinAddr_Locked_Out:
802	case VMMDevHGCMParmType_LinAddr_Locked:
803	if (!VBGLR0_CAN_USE_PHYS_PAGE_LIST())
804	{
805	pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size;
806	break;
807	}
808	/* fall thru */
809
810	case VMMDevHGCMParmType_LinAddr_Out:
811	case VMMDevHGCMParmType_LinAddr:
812	{
813	#ifdef USE_BOUNCE_BUFFERS
814	if (fIsUser)
815	{
816	size_t cbOut = RT_MIN(pSrcParm->u.Pointer.size, pDstParm->u.Pointer.size);
817	if (cbOut)
818	{
819	Assert(pParmInfo->aLockBufs[iLockBuf].iParm == iParm);
820	int rc2 = RTR0MemUserCopyTo((RTR3PTR)pDstParm->u.Pointer.u.linearAddr,
821	pParmInfo->aLockBufs[iLockBuf].pvSmallBuf
822	? pParmInfo->aLockBufs[iLockBuf].pvSmallBuf
823	: RTR0MemObjAddress(pParmInfo->aLockBufs[iLockBuf].hObj),
824	cbOut);
825	if (RT_FAILURE(rc2))
826	return rc2;
827	iLockBuf++;
828	}
829	else if ( iLockBuf < pParmInfo->cLockBufs
830	&& iParm == pParmInfo->aLockBufs[iLockBuf].iParm)
831	iLockBuf++;
832	}
833	#endif
834	pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size;
835	break;
836	}
837
838	default:
839	AssertFailed();
840	rc = VERR_INTERNAL_ERROR_4;
841	break;
842	}
843	}
844
845	#ifdef USE_BOUNCE_BUFFERS
846	Assert(!fIsUser \|\| pParmInfo->cLockBufs == iLockBuf);
847	#endif
848	return rc;
849	}
850
851
852	DECLR0VBGL(int) VbglR0HGCMInternalCall(VBoxGuestHGCMCallInfo *pCallInfo, uint32_t cbCallInfo, uint32_t fFlags,
853	PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
854	{
855	bool fIsUser = (fFlags & VBGLR0_HGCMCALL_F_MODE_MASK) == VBGLR0_HGCMCALL_F_USER;
856	struct VbglR0ParmInfo ParmInfo;
857	size_t cbExtra;
858	int rc;
859
860	/*
861	* Basic validation.
862	*/
863	AssertMsgReturn( !pCallInfo
864	\|\| !pfnAsyncCallback
865	\|\| pCallInfo->cParms > VBOX_HGCM_MAX_PARMS
866	\|\| !(fFlags & ~VBGLR0_HGCMCALL_F_MODE_MASK),
867	("pCallInfo=%p pfnAsyncCallback=%p fFlags=%#x\n", pCallInfo, pfnAsyncCallback, fFlags),
868	VERR_INVALID_PARAMETER);
869	AssertReturn( cbCallInfo >= sizeof(VBoxGuestHGCMCallInfo)
870	\|\| cbCallInfo >= pCallInfo->cParms * sizeof(HGCMFunctionParameter),
871	VERR_INVALID_PARAMETER);
872
873	Log(("GstHGCMCall: u32ClientID=%#x u32Function=%u cParms=%u cbCallInfo=%#x fFlags=%#x\n",
874	pCallInfo->u32ClientID, pCallInfo->u32ClientID, pCallInfo->u32Function, pCallInfo->cParms, cbCallInfo, fFlags));
875
876	/*
877	* Validate, lock and buffer the parameters for the call.
878	* This will calculate the amount of extra space for physical page list.
879	*/
880	rc = vbglR0HGCMInternalPreprocessCall(pCallInfo, cbCallInfo, fIsUser, &ParmInfo, &cbExtra);
881	if (RT_SUCCESS(rc))
882	{
883	/*
884	* Allocate the request buffer and recreate the call request.
885	*/
886	VMMDevHGCMCall *pHGCMCall;
887	rc = VbglGRAlloc((VMMDevRequestHeader **)&pHGCMCall,
888	sizeof(VMMDevHGCMCall) + pCallInfo->cParms * sizeof(HGCMFunctionParameter) + cbExtra,
889	VMMDevReq_HGCMCall);
890	if (RT_SUCCESS(rc))
891	{
892	bool fLeakIt;
893	vbglR0HGCMInternalInitCall(pHGCMCall, pCallInfo, cbCallInfo, fIsUser, &ParmInfo);
894
895	/*
896	* Perform the call.
897	*/
898	rc = vbglR0HGCMInternalDoCall(pHGCMCall, pfnAsyncCallback, pvAsyncData, u32AsyncData, &fLeakIt);
899	if (RT_SUCCESS(rc))
900	{
901	/*
902	* Copy back the result (parameters and buffers that changed).
903	*/
904	rc = vbglR0HGCMInternalCopyBackResult(pCallInfo, pHGCMCall, &ParmInfo, fIsUser, rc);
905	}
906	else
907	{
908	if (rc != VERR_INTERRUPTED)
909	LogRel(("VbglR0HGCMInternalCall: vbglR0HGCMInternalDoCall failed. rc=%Rrc\n", rc));
910	}
911
912	if (!fLeakIt)
913	VbglGRFree(&pHGCMCall->header.header);
914	}
915	}
916	else
917	LogRel(("VbglR0HGCMInternalCall: vbglR0HGCMInternalPreprocessCall failed. rc=%Rrc\n", rc));
918
919	/*
920	* Release locks and free bounce buffers.
921	*/
922	if (ParmInfo.cLockBufs)
923	while (ParmInfo.cLockBufs-- > 0)
924	{
925	RTR0MemObjFree(ParmInfo.aLockBufs[ParmInfo.cLockBufs].hObj, false /fFreeMappings/);
926	#ifdef USE_BOUNCE_BUFFERS
927	RTMemTmpFree(ParmInfo.aLockBufs[ParmInfo.cLockBufs].pvSmallBuf);
928	#endif
929	}
930
931	return rc;
932	}
933
934
935	#if ARCH_BITS == 64
936	DECLR0VBGL(int) VbglR0HGCMInternalCall32(VBoxGuestHGCMCallInfo *pCallInfo, uint32_t cbCallInfo, uint32_t fFlags,
937	PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData)
938	{
939	VBoxGuestHGCMCallInfo *pCallInfo64 = NULL;
940	HGCMFunctionParameter *pParm64 = NULL;
941	HGCMFunctionParameter32 *pParm32 = NULL;
942	uint32_t cParms = 0;
943	uint32_t iParm = 0;
944	int rc = VINF_SUCCESS;
945
946	/*
947	* Input validation.
948	*/
949	AssertMsgReturn( !pCallInfo
950	\|\| !pfnAsyncCallback
951	\|\| pCallInfo->cParms > VBOX_HGCM_MAX_PARMS
952	\|\| !(fFlags & ~VBGLR0_HGCMCALL_F_MODE_MASK),
953	("pCallInfo=%p pfnAsyncCallback=%p fFlags=%#x\n", pCallInfo, pfnAsyncCallback, fFlags),
954	VERR_INVALID_PARAMETER);
955	AssertReturn( cbCallInfo >= sizeof(VBoxGuestHGCMCallInfo)
956	\|\| cbCallInfo >= pCallInfo->cParms * sizeof(HGCMFunctionParameter32),
957	VERR_INVALID_PARAMETER);
958
959	/* This Assert does not work on Solaris 64/32 mixed mode, not sure why, skipping for now */
960	#ifndef RT_OS_SOLARIS
961	AssertReturn((fFlags & VBGLR0_HGCMCALL_F_MODE_MASK) == VBGLR0_HGCMCALL_F_KERNEL, VERR_WRONG_ORDER);
962	#endif
963
964	cParms = pCallInfo->cParms;
965	Log(("VbglR0HGCMInternalCall32: cParms=%d, u32Function=%d, fFlags=%#x\n", cParms, pCallInfo->u32Function, fFlags));
966
967	/*
968	* The simple approach, allocate a temporary request and convert the parameters.
969	*/
970	pCallInfo64 = (VBoxGuestHGCMCallInfo )RTMemTmpAllocZ(sizeof(pCallInfo64) + cParms * sizeof(HGCMFunctionParameter));
971	if (!pCallInfo64)
972	return VERR_NO_TMP_MEMORY;
973
974	pCallInfo64 = pCallInfo;
975	pParm32 = VBOXGUEST_HGCM_CALL_PARMS32(pCallInfo);
976	pParm64 = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo64);
977	for (iParm = 0; iParm < cParms; iParm++, pParm32++, pParm64++)
978	{
979	switch (pParm32->type)
980	{
981	case VMMDevHGCMParmType_32bit:
982	pParm64->type = VMMDevHGCMParmType_32bit;
983	pParm64->u.value32 = pParm32->u.value32;
984	break;
985
986	case VMMDevHGCMParmType_64bit:
987	pParm64->type = VMMDevHGCMParmType_64bit;
988	pParm64->u.value64 = pParm32->u.value64;
989	break;
990
991	case VMMDevHGCMParmType_LinAddr_Out:
992	case VMMDevHGCMParmType_LinAddr:
993	case VMMDevHGCMParmType_LinAddr_In:
994	pParm64->type = pParm32->type;
995	pParm64->u.Pointer.size = pParm32->u.Pointer.size;
996	pParm64->u.Pointer.u.linearAddr = pParm32->u.Pointer.u.linearAddr;
997	break;
998
999	default:
1000	rc = VERR_INVALID_PARAMETER;
1001	LogRel(("VbglR0HGCMInternalCall32: pParm32 type %#x invalid.\n", pParm32->type));
1002	break;
1003	}
1004	if (RT_FAILURE(rc))
1005	break;
1006	}
1007	if (RT_SUCCESS(rc))
1008	{
1009	rc = VbglR0HGCMInternalCall(pCallInfo64, sizeof(pCallInfo64) + cParms sizeof(HGCMFunctionParameter), fFlags,
1010	pfnAsyncCallback, pvAsyncData, u32AsyncData);
1011
1012	if (RT_SUCCESS(rc))
1013	{
1014	pCallInfo = pCallInfo64;
1015
1016	/*
1017	* Copy back.
1018	*/
1019	pParm32 = VBOXGUEST_HGCM_CALL_PARMS32(pCallInfo);
1020	pParm64 = VBOXGUEST_HGCM_CALL_PARMS(pCallInfo64);
1021	for (iParm = 0; iParm < cParms; iParm++, pParm32++, pParm64++)
1022	{
1023	switch (pParm64->type)
1024	{
1025	case VMMDevHGCMParmType_32bit:
1026	LogRel(("pParm32->u.value32=%d\n", pParm32->u.value32));
1027	pParm32->u.value32 = pParm64->u.value32;
1028	break;
1029
1030	case VMMDevHGCMParmType_64bit:
1031	pParm32->u.value64 = pParm64->u.value64;
1032	break;
1033
1034	case VMMDevHGCMParmType_LinAddr_Out:
1035	case VMMDevHGCMParmType_LinAddr:
1036	case VMMDevHGCMParmType_LinAddr_In:
1037	pParm32->u.Pointer.size = pParm64->u.Pointer.size;
1038	break;
1039
1040	default:
1041	LogRel(("VbglR0HGCMInternalCall32: failed invalid pParm32 type %d\n", pParm32->type));
1042	rc = VERR_INTERNAL_ERROR_3;
1043	break;
1044	}
1045	}
1046	}
1047	else
1048	LogRel(("VbglR0HGCMInternalCall32: VbglR0HGCMInternalCall failed. rc=%Rrc\n", rc));
1049	}
1050	else
1051	LogRel(("VbglR0HGCMInternalCall32: failed. rc=%Rrc\n", rc));
1052
1053	RTMemTmpFree(pCallInfo64);
1054	return rc;
1055	}
1056	#endif /* ARCH_BITS == 64 */
1057
1058	#endif /* VBGL_VBOXGUEST */
1059

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuestLib/HGCMInternal.cpp@ 28112

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