DBGFCoreWrite.cpp@ 49966

Last change on this file since 49966 was 48445, checked in by vboxsync, 11 years ago
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1	/* $Id: DBGFCoreWrite.cpp 48445 2013-09-12 10:52:46Z vboxsync $ */
2	/** @file
3	* DBGF - Debugger Facility, Guest Core Dump.
4	*/
5
6	/*
7	* Copyright (C) 2010-2013 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	/** @page pg_dbgf_vmcore VMCore Format
19	*
20	* The VirtualBox VMCore Format:
21	* [ ELF 64 Header] -- Only 1
22	*
23	* [ PT_NOTE ] -- Only 1
24	* - Offset into CoreDescriptor followed by list of Notes (Note Hdr + data) of VBox CPUs.
25	* - (Any Additional custom Note sections).
26	*
27	* [ PT_LOAD ] -- One for each contiguous memory chunk
28	* - Memory offset (physical).
29	* - File offset.
30	*
31	* CoreDescriptor
32	* - Magic, VBox version.
33	* - Number of CPus.
34	*
35	* Per-CPU register dump
36	* - CPU 1 Note Hdr + Data.
37	* - CPU 2 Note Hdr + Data.
38	* ...
39	* (Additional custom notes Hdr+data)
40	* - VBox 1 Note Hdr + Data.
41	* - VBox 2 Note Hdr + Data.
42	* ...
43	* Memory dump
44	*
45	*/
46
47	/*******************************************************************************
48	* Header Files *
49	*******************************************************************************/
50	#define LOG_GROUP LOG_GROUP_DBGF
51	#include <iprt/param.h>
52	#include <iprt/file.h>
53
54	#include "DBGFInternal.h"
55
56	#include <VBox/vmm/cpum.h>
57	#include <VBox/vmm/pgm.h>
58	#include <VBox/vmm/dbgf.h>
59	#include <VBox/vmm/dbgfcorefmt.h>
60	#include <VBox/vmm/mm.h>
61	#include <VBox/vmm/vm.h>
62	#include <VBox/vmm/uvm.h>
63
64	#include <VBox/err.h>
65	#include <VBox/log.h>
66	#include <VBox/version.h>
67
68	#include "../../Runtime/include/internal/ldrELF64.h"
69
70
71	/*******************************************************************************
72	* Defined Constants And Macros *
73	*******************************************************************************/
74	#define DBGFLOG_NAME "DBGFCoreWrite"
75
76
77	/*******************************************************************************
78	* Global Variables *
79	*******************************************************************************/
80	static const int s_NoteAlign = 8;
81	static const int s_cbNoteName = 16;
82
83	/* These strings HAVE to be 8-byte aligned */
84	static const char *s_pcszCoreVBoxCore = "VBCORE";
85	static const char *s_pcszCoreVBoxCpu = "VBCPU";
86
87
88	/*******************************************************************************
89	* Structures and Typedefs *
90	*******************************************************************************/
91	/**
92	* Guest core writer data.
93	*
94	* Used to pass parameters from DBGFR3CoreWrite to dbgfR3CoreWriteRendezvous.
95	*/
96	typedef struct DBGFCOREDATA
97	{
98	/** The name of the file to write the file to. */
99	const char *pszFilename;
100	/** Whether to replace (/overwrite) any existing file. */
101	bool fReplaceFile;
102	} DBGFCOREDATA;
103	/** Pointer to the guest core writer data. */
104	typedef DBGFCOREDATA *PDBGFCOREDATA;
105
106
107
108	/**
109	* ELF function to write 64-bit ELF header.
110	*
111	* @param hFile The file to write to.
112	* @param cProgHdrs Number of program headers.
113	* @param cSecHdrs Number of section headers.
114	*
115	* @return IPRT status code.
116	*/
117	static int Elf64WriteElfHdr(RTFILE hFile, uint16_t cProgHdrs, uint16_t cSecHdrs)
118	{
119	Elf64_Ehdr ElfHdr;
120	RT_ZERO(ElfHdr);
121	ElfHdr.e_ident[EI_MAG0] = ELFMAG0;
122	ElfHdr.e_ident[EI_MAG1] = ELFMAG1;
123	ElfHdr.e_ident[EI_MAG2] = ELFMAG2;
124	ElfHdr.e_ident[EI_MAG3] = ELFMAG3;
125	ElfHdr.e_ident[EI_DATA] = ELFDATA2LSB;
126	ElfHdr.e_type = ET_CORE;
127	ElfHdr.e_version = EV_CURRENT;
128	ElfHdr.e_ident[EI_CLASS] = ELFCLASS64;
129	/* 32-bit builds will produce cores with e_machine EM_386. */
130	#ifdef RT_ARCH_AMD64
131	ElfHdr.e_machine = EM_X86_64;
132	#else
133	ElfHdr.e_machine = EM_386;
134	#endif
135	ElfHdr.e_phnum = cProgHdrs;
136	ElfHdr.e_shnum = cSecHdrs;
137	ElfHdr.e_ehsize = sizeof(ElfHdr);
138	ElfHdr.e_phoff = sizeof(ElfHdr);
139	ElfHdr.e_phentsize = sizeof(Elf64_Phdr);
140	ElfHdr.e_shentsize = sizeof(Elf64_Shdr);
141
142	return RTFileWrite(hFile, &ElfHdr, sizeof(ElfHdr), NULL /* all */);
143	}
144
145
146	/**
147	* ELF function to write 64-bit program header.
148	*
149	* @param hFile The file to write to.
150	* @param Type Type of program header (PT_*).
151	* @param fFlags Flags (access permissions, PF_*).
152	* @param offFileData File offset of contents.
153	* @param cbFileData Size of contents in the file.
154	* @param cbMemData Size of contents in memory.
155	* @param Phys Physical address, pass zero if not applicable.
156	*
157	* @return IPRT status code.
158	*/
159	static int Elf64WriteProgHdr(RTFILE hFile, uint32_t Type, uint32_t fFlags, uint64_t offFileData, uint64_t cbFileData,
160	uint64_t cbMemData, RTGCPHYS Phys)
161	{
162	Elf64_Phdr ProgHdr;
163	RT_ZERO(ProgHdr);
164	ProgHdr.p_type = Type;
165	ProgHdr.p_flags = fFlags;
166	ProgHdr.p_offset = offFileData;
167	ProgHdr.p_filesz = cbFileData;
168	ProgHdr.p_memsz = cbMemData;
169	ProgHdr.p_paddr = Phys;
170
171	return RTFileWrite(hFile, &ProgHdr, sizeof(ProgHdr), NULL /* all */);
172	}
173
174
175	/**
176	* Returns the size of the NOTE section given the name and size of the data.
177	*
178	* @param pszName Name of the note section.
179	* @param cb Size of the data portion of the note section.
180	*
181	* @return The size of the NOTE section as rounded to the file alignment.
182	*/
183	static uint64_t Elf64NoteSectionSize(const char *pszName, uint64_t cbData)
184	{
185	uint64_t cbNote = sizeof(Elf64_Nhdr);
186
187	size_t cchName = strlen(pszName) + 1;
188	size_t cchNameAlign = RT_ALIGN_Z(cchName, s_NoteAlign);
189
190	cbNote += cchNameAlign;
191	cbNote += RT_ALIGN_64(cbData, s_NoteAlign);
192	return cbNote;
193	}
194
195
196	/**
197	* Elf function to write 64-bit note header.
198	*
199	* @param hFile The file to write to.
200	* @param Type Type of this section.
201	* @param pszName Name of this section.
202	* @param pcv Opaque pointer to the data, if NULL only computes size.
203	* @param cbData Size of the data.
204	*
205	* @return IPRT status code.
206	*/
207	static int Elf64WriteNoteHdr(RTFILE hFile, uint16_t Type, const char pszName, const void pcvData, uint64_t cbData)
208	{
209	AssertReturn(pcvData, VERR_INVALID_POINTER);
210	AssertReturn(cbData > 0, VERR_NO_DATA);
211
212	char szNoteName[s_cbNoteName];
213	RT_ZERO(szNoteName);
214	RTStrCopy(szNoteName, sizeof(szNoteName), pszName);
215
216	size_t cchName = strlen(szNoteName) + 1;
217	size_t cchNameAlign = RT_ALIGN_Z(cchName, s_NoteAlign);
218	uint64_t cbDataAlign = RT_ALIGN_64(cbData, s_NoteAlign);
219
220	/*
221	* Yell loudly and bail if we are going to be writing a core file that is not compatible with
222	* both Solaris and the 64-bit ELF spec. which dictates 8-byte alignment. See @bugref{5211} comment 3.
223	*/
224	if (cchNameAlign - cchName > 3)
225	{
226	LogRel((DBGFLOG_NAME ": Elf64WriteNoteHdr pszName=%s cchName=%u cchNameAlign=%u, cchName aligns to 4 not 8-bytes!\n", pszName, cchName,
227	cchNameAlign));
228	return VERR_INVALID_PARAMETER;
229	}
230
231	if (cbDataAlign - cbData > 3)
232	{
233	LogRel((DBGFLOG_NAME ": Elf64WriteNoteHdr pszName=%s cbData=%u cbDataAlign=%u, cbData aligns to 4 not 8-bytes!\n", pszName, cbData,
234	cbDataAlign));
235	return VERR_INVALID_PARAMETER;
236	}
237
238	static const char s_achPad[7] = { 0, 0, 0, 0, 0, 0, 0 };
239	AssertCompile(sizeof(s_achPad) >= s_NoteAlign - 1);
240
241	Elf64_Nhdr ElfNoteHdr;
242	RT_ZERO(ElfNoteHdr);
243	ElfNoteHdr.n_namesz = (Elf64_Word)cchName - 1; /* Again a discrepancy between ELF-64 and Solaris (@bugref{5211} comment 3), we will follow ELF-64 */
244	ElfNoteHdr.n_type = Type;
245	ElfNoteHdr.n_descsz = (Elf64_Word)cbDataAlign;
246
247	/*
248	* Write note header.
249	*/
250	int rc = RTFileWrite(hFile, &ElfNoteHdr, sizeof(ElfNoteHdr), NULL /* all */);
251	if (RT_SUCCESS(rc))
252	{
253	/*
254	* Write note name.
255	*/
256	rc = RTFileWrite(hFile, szNoteName, cchName, NULL /* all */);
257	if (RT_SUCCESS(rc))
258	{
259	/*
260	* Write note name padding if required.
261	*/
262	if (cchNameAlign > cchName)
263	rc = RTFileWrite(hFile, s_achPad, cchNameAlign - cchName, NULL);
264
265	if (RT_SUCCESS(rc))
266	{
267	/*
268	* Write note data.
269	*/
270	rc = RTFileWrite(hFile, pcvData, cbData, NULL /* all */);
271	if (RT_SUCCESS(rc))
272	{
273	/*
274	* Write note data padding if required.
275	*/
276	if (cbDataAlign > cbData)
277	rc = RTFileWrite(hFile, s_achPad, cbDataAlign - cbData, NULL /* all*/);
278	}
279	}
280	}
281	}
282
283	if (RT_FAILURE(rc))
284	LogRel((DBGFLOG_NAME ": RTFileWrite failed. rc=%Rrc pszName=%s cchName=%u cchNameAlign=%u cbData=%u cbDataAlign=%u\n",
285	rc, pszName, cchName, cchNameAlign, cbData, cbDataAlign));
286
287	return rc;
288	}
289
290
291	/**
292	* Count the number of memory ranges that go into the core file.
293	*
294	* We cannot do a page-by-page dump of the entire guest memory as there will be
295	* way too many program header entries. Also we don't want to dump MMIO regions
296	* which means we cannot have a 1:1 mapping between core file offset and memory
297	* offset. Instead we dump the memory in ranges. A memory range is a contiguous
298	* memory area suitable for dumping to a core file.
299	*
300	* @param pVM Pointer to the VM.
301	*
302	* @return Number of memory ranges
303	*/
304	static uint32_t dbgfR3GetRamRangeCount(PVM pVM)
305	{
306	return PGMR3PhysGetRamRangeCount(pVM);
307	}
308
309
310	/**
311	* Worker function for dbgfR3CoreWrite which does the writing.
312	*
313	* @returns VBox status code
314	* @param pVM Pointer to the VM.
315	* @param hFile The file to write to. Caller closes this.
316	*/
317	static int dbgfR3CoreWriteWorker(PVM pVM, RTFILE hFile)
318	{
319	/*
320	* Collect core information.
321	*/
322	uint32_t const cu32MemRanges = dbgfR3GetRamRangeCount(pVM);
323	uint16_t const cMemRanges = cu32MemRanges < UINT16_MAX - 1 ? cu32MemRanges : UINT16_MAX - 1; /* One PT_NOTE Program header */
324	uint16_t const cProgHdrs = cMemRanges + 1;
325
326	DBGFCOREDESCRIPTOR CoreDescriptor;
327	RT_ZERO(CoreDescriptor);
328	CoreDescriptor.u32Magic = DBGFCORE_MAGIC;
329	CoreDescriptor.u32FmtVersion = DBGFCORE_FMT_VERSION;
330	CoreDescriptor.cbSelf = sizeof(CoreDescriptor);
331	CoreDescriptor.u32VBoxVersion = VBOX_FULL_VERSION;
332	CoreDescriptor.u32VBoxRevision = VMMGetSvnRev();
333	CoreDescriptor.cCpus = pVM->cCpus;
334
335	Log((DBGFLOG_NAME ": CoreDescriptor Version=%u Revision=%u\n", CoreDescriptor.u32VBoxVersion, CoreDescriptor.u32VBoxRevision));
336
337	/*
338	* Compute the file layout (see pg_dbgf_vmcore).
339	*/
340	uint64_t const offElfHdr = RTFileTell(hFile);
341	uint64_t const offNoteSection = offElfHdr + sizeof(Elf64_Ehdr);
342	uint64_t const offLoadSections = offNoteSection + sizeof(Elf64_Phdr);
343	uint64_t const cbLoadSections = cMemRanges * sizeof(Elf64_Phdr);
344	uint64_t const offCoreDescriptor= offLoadSections + cbLoadSections;
345	uint64_t const cbCoreDescriptor = Elf64NoteSectionSize(s_pcszCoreVBoxCore, sizeof(CoreDescriptor));
346	uint64_t const offCpuDumps = offCoreDescriptor + cbCoreDescriptor;
347	uint64_t const cbCpuDumps = pVM->cCpus * Elf64NoteSectionSize(s_pcszCoreVBoxCpu, sizeof(CPUMCTX));
348	uint64_t const offMemory = offCpuDumps + cbCpuDumps;
349
350	uint64_t const offNoteSectionData = offCoreDescriptor;
351	uint64_t const cbNoteSectionData = cbCoreDescriptor + cbCpuDumps;
352
353	/*
354	* Write ELF header.
355	*/
356	int rc = Elf64WriteElfHdr(hFile, cProgHdrs, 0 /* cSecHdrs */);
357	if (RT_FAILURE(rc))
358	{
359	LogRel((DBGFLOG_NAME ": Elf64WriteElfHdr failed. rc=%Rrc\n", rc));
360	return rc;
361	}
362
363	/*
364	* Write PT_NOTE program header.
365	*/
366	Assert(RTFileTell(hFile) == offNoteSection);
367	rc = Elf64WriteProgHdr(hFile, PT_NOTE, PF_R,
368	offNoteSectionData, /* file offset to contents */
369	cbNoteSectionData, /* size in core file */
370	cbNoteSectionData, /* size in memory */
371	0); /* physical address */
372	if (RT_FAILURE(rc))
373	{
374	LogRel((DBGFLOG_NAME ": Elf64WritreProgHdr failed for PT_NOTE. rc=%Rrc\n", rc));
375	return rc;
376	}
377
378	/*
379	* Write PT_LOAD program header for each memory range.
380	*/
381	Assert(RTFileTell(hFile) == offLoadSections);
382	uint64_t offMemRange = offMemory;
383	for (uint16_t iRange = 0; iRange < cMemRanges; iRange++)
384	{
385	RTGCPHYS GCPhysStart;
386	RTGCPHYS GCPhysEnd;
387	bool fIsMmio;
388	rc = PGMR3PhysGetRange(pVM, iRange, &GCPhysStart, &GCPhysEnd, NULL /* pszDesc */, &fIsMmio);
389	if (RT_FAILURE(rc))
390	{
391	LogRel((DBGFLOG_NAME ": PGMR3PhysGetRange failed for iRange(%u) rc=%Rrc\n", iRange, rc));
392	return rc;
393	}
394
395	uint64_t cbMemRange = GCPhysEnd - GCPhysStart + 1;
396	uint64_t cbFileRange = fIsMmio ? 0 : cbMemRange;
397
398	Log((DBGFLOG_NAME ": PGMR3PhysGetRange iRange=%u GCPhysStart=%#x GCPhysEnd=%#x cbMemRange=%u\n",
399	iRange, GCPhysStart, GCPhysEnd, cbMemRange));
400
401	rc = Elf64WriteProgHdr(hFile, PT_LOAD, PF_R,
402	offMemRange, /* file offset to contents */
403	cbFileRange, /* size in core file */
404	cbMemRange, /* size in memory */
405	GCPhysStart); /* physical address */
406	if (RT_FAILURE(rc))
407	{
408	LogRel((DBGFLOG_NAME ": Elf64WriteProgHdr failed for memory range(%u) cbFileRange=%u cbMemRange=%u rc=%Rrc\n",
409	iRange, cbFileRange, cbMemRange, rc));
410	return rc;
411	}
412
413	offMemRange += cbFileRange;
414	}
415
416	/*
417	* Write the Core descriptor note header and data.
418	*/
419	Assert(RTFileTell(hFile) == offCoreDescriptor);
420	rc = Elf64WriteNoteHdr(hFile, NT_VBOXCORE, s_pcszCoreVBoxCore, &CoreDescriptor, sizeof(CoreDescriptor));
421	if (RT_FAILURE(rc))
422	{
423	LogRel((DBGFLOG_NAME ": Elf64WriteNoteHdr failed for Note '%s' rc=%Rrc\n", s_pcszCoreVBoxCore, rc));
424	return rc;
425	}
426
427	/*
428	* Write the CPU context note headers and data.
429	*/
430	/** @todo r=ramshankar: Dump a more standardized CPU structure rather than
431	* dumping CPUMCTX and bump the core file version number. */
432	Assert(RTFileTell(hFile) == offCpuDumps);
433	for (uint32_t iCpu = 0; iCpu < pVM->cCpus; iCpu++)
434	{
435	PCPUMCTX pCpuCtx = CPUMQueryGuestCtxPtr(&pVM->aCpus[iCpu]);
436	rc = Elf64WriteNoteHdr(hFile, NT_VBOXCPU, s_pcszCoreVBoxCpu, pCpuCtx, sizeof(CPUMCTX));
437	if (RT_FAILURE(rc))
438	{
439	LogRel((DBGFLOG_NAME ": Elf64WriteNoteHdr failed for vCPU[%u] rc=%Rrc\n", iCpu, rc));
440	return rc;
441	}
442	}
443
444	/*
445	* Write memory ranges.
446	*/
447	Assert(RTFileTell(hFile) == offMemory);
448	for (uint16_t iRange = 0; iRange < cMemRanges; iRange++)
449	{
450	RTGCPHYS GCPhysStart;
451	RTGCPHYS GCPhysEnd;
452	bool fIsMmio;
453	rc = PGMR3PhysGetRange(pVM, iRange, &GCPhysStart, &GCPhysEnd, NULL /* pszDesc */, &fIsMmio);
454	if (RT_FAILURE(rc))
455	{
456	LogRel((DBGFLOG_NAME ": PGMR3PhysGetRange(2) failed for iRange(%u) rc=%Rrc\n", iRange, rc));
457	return rc;
458	}
459
460	if (fIsMmio)
461	continue;
462
463	/*
464	* Write page-by-page of this memory range.
465	*
466	* The read function may fail on MMIO ranges, we write these as zero
467	* pages for now (would be nice to have the VGA bits there though).
468	*/
469	uint64_t cbMemRange = GCPhysEnd - GCPhysStart + 1;
470	uint64_t cPages = cbMemRange >> PAGE_SHIFT;
471	for (uint64_t iPage = 0; iPage < cPages; iPage++)
472	{
473	uint8_t abPage[PAGE_SIZE];
474	rc = PGMPhysSimpleReadGCPhys(pVM, abPage, GCPhysStart + (iPage << PAGE_SHIFT), sizeof(abPage));
475	if (RT_FAILURE(rc))
476	{
477	if (rc != VERR_PGM_PHYS_PAGE_RESERVED)
478	LogRel((DBGFLOG_NAME ": PGMPhysRead failed for iRange=%u iPage=%u. rc=%Rrc. Ignoring...\n", iRange, iPage, rc));
479	RT_ZERO(abPage);
480	}
481
482	rc = RTFileWrite(hFile, abPage, sizeof(abPage), NULL /* all */);
483	if (RT_FAILURE(rc))
484	{
485	LogRel((DBGFLOG_NAME ": RTFileWrite failed. iRange=%u iPage=%u rc=%Rrc\n", iRange, iPage, rc));
486	return rc;
487	}
488	}
489	}
490
491	return rc;
492	}
493
494
495	/**
496	* EMT Rendezvous worker function for DBGFR3CoreWrite.
497	*
498	* @param pVM Pointer to the VM.
499	* @param pVCpu The handle of the calling VCPU.
500	* @param pvData Opaque data.
501	*
502	* @return VBox status code.
503	*/
504	static DECLCALLBACK(VBOXSTRICTRC) dbgfR3CoreWriteRendezvous(PVM pVM, PVMCPU pVCpu, void *pvData)
505	{
506	/*
507	* Validate input.
508	*/
509	AssertReturn(pVM, VERR_INVALID_VM_HANDLE);
510	AssertReturn(pVCpu, VERR_INVALID_VMCPU_HANDLE);
511	AssertReturn(pvData, VERR_INVALID_POINTER);
512
513	PDBGFCOREDATA pDbgfData = (PDBGFCOREDATA)pvData;
514
515	/*
516	* Create the core file.
517	*/
518	uint32_t fFlags = (pDbgfData->fReplaceFile ? RTFILE_O_CREATE_REPLACE : RTFILE_O_CREATE)
519	\| RTFILE_O_WRITE
520	\| RTFILE_O_DENY_ALL
521	\| (0600 << RTFILE_O_CREATE_MODE_SHIFT);
522	RTFILE hFile;
523	int rc = RTFileOpen(&hFile, pDbgfData->pszFilename, fFlags);
524	if (RT_SUCCESS(rc))
525	{
526	rc = dbgfR3CoreWriteWorker(pVM, hFile);
527	RTFileClose(hFile);
528	}
529	else
530	LogRel((DBGFLOG_NAME ": RTFileOpen failed for '%s' rc=%Rrc\n", pDbgfData->pszFilename, rc));
531	return rc;
532	}
533
534
535	/**
536	* Write core dump of the guest.
537	*
538	* @returns VBox status code.
539	* @param pUVM The user mode VM handle.
540	* @param pszFilename The name of the file to which the guest core
541	* dump should be written.
542	* @param fReplaceFile Whether to replace the file or not.
543	*
544	* @remarks The VM may need to be suspended before calling this function in
545	* order to truly stop all device threads and drivers. This function
546	* only synchronizes EMTs.
547	*/
548	VMMR3DECL(int) DBGFR3CoreWrite(PUVM pUVM, const char *pszFilename, bool fReplaceFile)
549	{
550	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
551	PVM pVM = pUVM->pVM;
552	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
553	AssertReturn(pszFilename, VERR_INVALID_HANDLE);
554
555	/*
556	* Pass the core write request down to EMT rendezvous which makes sure
557	* other EMTs, if any, are not running. IO threads could still be running
558	* but we don't care about them.
559	*/
560	DBGFCOREDATA CoreData;
561	RT_ZERO(CoreData);
562	CoreData.pszFilename = pszFilename;
563	CoreData.fReplaceFile = fReplaceFile;
564
565	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, dbgfR3CoreWriteRendezvous, &CoreData);
566	if (RT_SUCCESS(rc))
567	LogRel((DBGFLOG_NAME ": Successfully wrote guest core dump '%s'\n", pszFilename));
568	else
569	LogRel((DBGFLOG_NAME ": Failed to write guest core dump '%s'. rc=%Rrc\n", pszFilename, rc));
570	return rc;
571	}
572

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source: vbox/trunk/src/VBox/VMM/VMMR3/DBGFCoreWrite.cpp@ 49966

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