tar.cpp@ 25660

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1	/* $Id: tar.cpp 25329 2009-12-11 13:49:59Z vboxsync $ */
2	/** @file
3	* IPRT - Tar archive I/O.
4	*/
5
6	/*
7	* Copyright (C) 2009 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
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#include "internal/iprt.h"
36	#include <iprt/tar.h>
37
38	#include <iprt/asm.h>
39	#include <iprt/assert.h>
40	#include <iprt/err.h>
41	#include <iprt/file.h>
42	#include <iprt/mem.h>
43	#include <iprt/path.h>
44	#include <iprt/string.h>
45
46
47	/*******************************************************************************
48	* Structures and Typedefs *
49	*******************************************************************************/
50
51	/** @name RTTARRECORD::h::linkflag
52	* @{ */
53	#define LF_OLDNORMAL '\0' /*< Normal disk file, Unix compatible /
54	#define LF_NORMAL '0' /*< Normal disk file /
55	#define LF_LINK '1' /*< Link to previously dumped file /
56	#define LF_SYMLINK '2' /*< Symbolic link /
57	#define LF_CHR '3' /*< Character special file /
58	#define LF_BLK '4' /*< Block special file /
59	#define LF_DIR '5' /*< Directory /
60	#define LF_FIFO '6' /*< FIFO special file /
61	#define LF_CONTIG '7' /*< Contiguous file /
62	/** @} */
63
64	typedef union RTTARRECORD
65	{
66	char d[512];
67	struct h
68	{
69	char name[100];
70	char mode[8];
71	char uid[8];
72	char gid[8];
73	char size[12];
74	char mtime[12];
75	char chksum[8];
76	char linkflag;
77	char linkname[100];
78	char magic[8];
79	char uname[32];
80	char gname[32];
81	char devmajor[8];
82	char devminor[8];
83	} h;
84	} RTTARRECORD;
85	typedef RTTARRECORD *PRTTARRECORD;
86	AssertCompileSize(RTTARRECORD, 512);
87	AssertCompileMemberOffset(RTTARRECORD, h.size, 100+8*3);
88
89	#if 0 /* not currently used */
90	typedef struct RTTARFILELIST
91	{
92	char *pszFilename;
93	RTTARFILELIST *pNext;
94	} RTTARFILELIST;
95	typedef RTTARFILELIST *PRTTARFILELIST;
96	#endif
97
98
99	/*******************************************************************************
100	* Internal Functions *
101	*******************************************************************************/
102
103	static int rtTarCalcChkSum(PRTTARRECORD pRecord, uint32_t *pChkSum)
104	{
105	uint32_t check = 0;
106	uint32_t zero = 0;
107	for (size_t i = 0; i < sizeof(RTTARRECORD); ++i)
108	{
109	/* Calculate the sum of every byte from the header. The checksum field
110	* itself is counted as all blanks. */
111	if ( i < RT_UOFFSETOF(RTTARRECORD, h.chksum)
112	\|\| i >= RT_UOFFSETOF(RTTARRECORD, h.linkflag))
113	check += pRecord->d[i];
114	else
115	check += ' ';
116	/* Additional check if all fields are zero, which indicate EOF. */
117	zero += pRecord->d[i];
118	}
119
120	/* EOF? */
121	if (!zero)
122	return VERR_EOF;
123
124	*pChkSum = check;
125	return VINF_SUCCESS;
126	}
127
128	static int rtTarCheckHeader(PRTTARRECORD pRecord)
129	{
130	uint32_t check;
131	int rc = rtTarCalcChkSum(pRecord, &check);
132	/* EOF? */
133	if (RT_FAILURE(rc))
134	return rc;
135
136	/* Verify the checksum */
137	uint32_t sum;
138	rc = RTStrToUInt32Full(pRecord->h.chksum, 8, &sum);
139	if (RT_SUCCESS(rc) && sum == check)
140	return VINF_SUCCESS;
141	return VERR_TAR_CHKSUM_MISMATCH;
142	}
143
144	static int rtTarCopyFileFrom(RTFILE hFile, const char *pszTargetName, PRTTARRECORD pRecord)
145	{
146	RTFILE hNewFile;
147	/* Open the target file */
148	int rc = RTFileOpen(&hNewFile, pszTargetName, RTFILE_O_CREATE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
149	if (RT_FAILURE(rc))
150	return rc;
151
152	/*@todo r=bird: Use a bigger buffer here, see comment in rtTarCopyFileTo. /
153
154	uint64_t cbToCopy = RTStrToUInt64(pRecord->h.size);
155	size_t cbAllWritten = 0;
156	RTTARRECORD record;
157	/* Copy the content from hFile over to pszTargetName. This is done block
158	* wise in 512 byte steps. After this copying is finished hFile will be on
159	* a 512 byte boundary, regardless if the file copied is 512 byte size
160	* aligned. */
161	for (;;)
162	{
163	/* Finished already? */
164	if (cbAllWritten == cbToCopy)
165	break;
166	/* Read one block */
167	rc = RTFileRead(hFile, &record, sizeof(record), NULL);
168	if (RT_FAILURE(rc))
169	break;
170	size_t cbToWrite = sizeof(record);
171	/* Check for the last block which has not to be 512 bytes in size. */
172	if (cbAllWritten + cbToWrite > cbToCopy)
173	cbToWrite = cbToCopy - cbAllWritten;
174	/* Write the block */
175	rc = RTFileWrite(hNewFile, &record, cbToWrite, NULL);
176	if (RT_FAILURE(rc))
177	break;
178	/* Count how many bytes are written already */
179	cbAllWritten += cbToWrite;
180	}
181
182	/* Now set all file attributes */
183	if (RT_SUCCESS(rc))
184	{
185	int32_t mode;
186	rc = RTStrToInt32Full(pRecord->h.mode, 8, &mode);
187	if (RT_SUCCESS(rc))
188	{
189	mode \|= RTFS_TYPE_FILE; /* For now we support regular files only */
190	/* Set the mode */
191	rc = RTFileSetMode(hNewFile, mode);
192	}
193	}
194	/* Make sure the called doesn't mix truncated tar files with the official
195	* end indicated by rtTarCalcChkSum. */
196	else if (rc == VERR_EOF)
197	rc = VERR_FILE_IO_ERROR;
198
199	RTFileClose(hNewFile);
200
201	/* Delete the freshly created file in the case of an error */
202	if (RT_FAILURE(rc))
203	RTFileDelete(pszTargetName);
204
205	return rc;
206	}
207
208	static int rtTarCopyFileTo(RTFILE hFile, const char *pszSrcName)
209	{
210	RTFILE hOldFile;
211	/* Open the source file */
212	int rc = RTFileOpen(&hOldFile, pszSrcName, RTFILE_O_OPEN \| RTFILE_O_READ \| RTFILE_O_DENY_WRITE);
213	if (RT_FAILURE(rc))
214	return rc;
215
216	/* Get the size of the source file */
217	uint64_t cbSize;
218	rc = RTFileGetSize(hOldFile, &cbSize);
219	if (RT_FAILURE(rc))
220	{
221	RTFileClose(hOldFile);
222	return rc;
223	}
224	/* Get some info from the source file */
225	RTFSOBJINFO info;
226	RTUID uid = 0;
227	RTGID gid = 0;
228	RTFMODE fmode = 0600; /* Make some save default */
229	int64_t mtime = 0;
230	/* This isn't critical. Use the defaults if it fails. */
231	rc = RTFileQueryInfo(hOldFile, &info, RTFSOBJATTRADD_UNIX);
232	if (RT_SUCCESS(rc))
233	{
234	fmode = info.Attr.fMode & RTFS_UNIX_MASK;
235	uid = info.Attr.u.Unix.uid;
236	gid = info.Attr.u.Unix.gid;
237	mtime = RTTimeSpecGetSeconds(&info.ModificationTime);
238	}
239
240	/* Fill the header record */
241	RTTARRECORD record;
242	RT_ZERO(record);
243	RTStrPrintf(record.h.name, sizeof(record.h.name), "%s", RTPathFilename(pszSrcName));
244	RTStrPrintf(record.h.mode, sizeof(record.h.mode), "%0.7o", fmode);
245	RTStrPrintf(record.h.uid, sizeof(record.h.uid), "%0.7o", uid);
246	RTStrPrintf(record.h.gid, sizeof(record.h.gid), "%0.7o", gid);
247	RTStrPrintf(record.h.size, sizeof(record.h.size), "%0.11o", cbSize);
248	RTStrPrintf(record.h.mtime, sizeof(record.h.mtime), "%0.11o", mtime);
249	RTStrPrintf(record.h.magic, sizeof(record.h.magic), "ustar ");
250	RTStrPrintf(record.h.uname, sizeof(record.h.uname), "someone");
251	RTStrPrintf(record.h.gname, sizeof(record.h.gname), "someone");
252	record.h.linkflag = LF_NORMAL;
253
254	/* Create the checksum out of the new header */
255	uint32_t chksum;
256	rc = rtTarCalcChkSum(&record, &chksum);
257	if (RT_SUCCESS(rc))
258	{
259	RTStrPrintf(record.h.chksum, sizeof(record.h.chksum), "%0.7o", chksum);
260
261	/* Write the header first */
262	rc = RTFileWrite(hFile, &record, sizeof(record), NULL);
263	if (RT_SUCCESS(rc))
264	{
265	/** @todo r=bird: using a 64KB buffer here instead of 0.5KB would probably be
266	* a good thing. */
267	uint64_t cbAllWritten = 0;
268	/* Copy the content from pszSrcName over to hFile. This is done block
269	* wise in 512 byte steps. After this copying is finished hFile will be
270	* on a 512 byte boundary, regardless if the file copied is 512 byte
271	* size aligned. */
272	for (;;)
273	{
274	if (cbAllWritten >= cbSize)
275	break;
276	size_t cbToRead = sizeof(record);
277	/* Last record? */
278	if (cbAllWritten + cbToRead > cbSize)
279	{
280	/* Initialize with zeros */
281	RT_ZERO(record);
282	cbToRead = cbSize - cbAllWritten;
283	}
284	/* Read one block */
285	rc = RTFileRead(hOldFile, &record, cbToRead, NULL);
286	if (RT_FAILURE(rc))
287	break;
288	/* Write one block */
289	rc = RTFileWrite(hFile, &record, sizeof(record), NULL);
290	if (RT_FAILURE(rc))
291	break;
292	/* Count how many bytes are written already */
293	cbAllWritten += sizeof(record);
294	}
295
296	/* Make sure the called doesn't mix truncated tar files with the
297	* official end indicated by rtTarCalcChkSum. */
298	if (rc == VERR_EOF)
299	rc = VERR_FILE_IO_ERROR;
300	}
301	}
302
303	RTFileClose(hOldFile);
304	return rc;
305	}
306
307	static int rtTarSkipData(RTFILE hFile, PRTTARRECORD pRecord)
308	{
309	int rc = VINF_SUCCESS;
310	/* Seek over the data parts (512 bytes aligned) */
311	int64_t offSeek = RT_ALIGN(RTStrToInt64(pRecord->h.size), sizeof(RTTARRECORD));
312	if (offSeek > 0)
313	rc = RTFileSeek(hFile, offSeek, RTFILE_SEEK_CURRENT, NULL);
314	return rc;
315	}
316
317
318	RTR3DECL(int) RTTarQueryFileExists(const char pszTarFile, const char pszFile)
319	{
320	/* Validate input */
321	AssertPtrReturn(pszTarFile, VERR_INVALID_POINTER);
322	AssertPtrReturn(pszFile, VERR_INVALID_POINTER);
323
324	/* Open the tar file */
325	RTFILE hFile;
326	int rc = RTFileOpen(&hFile, pszTarFile, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
327	if (RT_FAILURE(rc))
328	return rc;
329
330	bool fFound = false;
331	RTTARRECORD record;
332	for (;;)
333	{
334	/** @todo r=bird: the reading, validation and EOF check done here should be
335	* moved to a separate helper function. That would make it easiser to
336	* distinguish genuine-end-of-tar-file and VERR_EOF caused by a
337	* trunacted file. That said, rtTarSkipData won't return VERR_EOF, at
338	* least not on unix, since it's not a sin to seek beyond the end of a
339	* file. */
340	rc = RTFileRead(hFile, &record, sizeof(record), NULL);
341	/* Check for error or EOF. */
342	if (RT_FAILURE(rc))
343	break;
344	/* Check for EOF & data integrity */
345	rc = rtTarCheckHeader(&record);
346	if (RT_FAILURE(rc))
347	break;
348	/* We support normal files only */
349	if ( record.h.linkflag == LF_OLDNORMAL
350	\|\| record.h.linkflag == LF_NORMAL)
351	{
352	if (!RTStrCmp(record.h.name, pszFile))
353	{
354	fFound = true;
355	break;
356	}
357	}
358	rc = rtTarSkipData(hFile, &record);
359	if (RT_FAILURE(rc))
360	break;
361	}
362
363	RTFileClose(hFile);
364
365	if (rc == VERR_EOF)
366	rc = VINF_SUCCESS;
367
368	/* Something found? */
369	if ( RT_SUCCESS(rc)
370	&& !fFound)
371	rc = VERR_FILE_NOT_FOUND;
372
373	return rc;
374	}
375
376	RTR3DECL(int) RTTarList(const char pszTarFile, char *ppapszFiles, size_t pcFiles)
377	{
378	/* Validate input */
379	AssertPtrReturn(pszTarFile, VERR_INVALID_POINTER);
380	AssertPtrReturn(ppapszFiles, VERR_INVALID_POINTER);
381	AssertPtrReturn(pcFiles, VERR_INVALID_POINTER);
382
383	/* Open the tar file */
384	RTFILE hFile;
385	int rc = RTFileOpen(&hFile, pszTarFile, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
386	if (RT_FAILURE(rc))
387	return rc;
388
389	/* Initialize the file name array with one slot */
390	size_t cFilesAlloc = 1;
391	char papszFiles = (char)RTMemAlloc(sizeof(char *));
392	if (!papszFiles)
393	{
394	RTFileClose(hFile);
395	return VERR_NO_MEMORY;
396	}
397
398	/* Iterate through the tar file record by record. Skip data records as we
399	* didn't need them. */
400	RTTARRECORD record;
401	size_t cFiles = 0;
402	for (;;)
403	{
404	rc = RTFileRead(hFile, &record, sizeof(record), NULL);
405	/* Check for error or EOF. */
406	if (RT_FAILURE(rc))
407	break;
408	/* Check for EOF & data integrity */
409	rc = rtTarCheckHeader(&record);
410	if (RT_FAILURE(rc))
411	break;
412	/* We support normal files only */
413	if ( record.h.linkflag == LF_OLDNORMAL
414	\|\| record.h.linkflag == LF_NORMAL)
415	{
416	if (cFiles >= cFilesAlloc)
417	{
418	/* Double the array size, make sure the size doesn't wrap. */
419	void *pvNew = NULL;
420	size_t cbNew = cFilesAlloc * sizeof(char ) 2;
421	if (cbNew / sizeof(char *) / 2 == cFilesAlloc)
422	pvNew = RTMemRealloc(papszFiles, cbNew);
423	if (!pvNew)
424	{
425	rc = VERR_NO_MEMORY;
426	break;
427	}
428	papszFiles = (char **)pvNew;
429	cFilesAlloc *= 2;
430	}
431
432	/* Duplicate the name */
433	papszFiles[cFiles] = RTStrDup(record.h.name);
434	if (!papszFiles[cFiles])
435	{
436	rc = VERR_NO_MEMORY;
437	break;
438	}
439	cFiles++;
440	}
441	rc = rtTarSkipData(hFile, &record);
442	if (RT_FAILURE(rc))
443	break;
444	}
445
446	RTFileClose(hFile);
447
448	if (rc == VERR_EOF)
449	rc = VINF_SUCCESS;
450
451	/* Return the file array on success, dispose of it on failure. */
452	if (RT_SUCCESS(rc))
453	{
454	*pcFiles = cFiles;
455	*ppapszFiles = papszFiles;
456	}
457	else
458	{
459	while (cFiles-- > 0)
460	RTStrFree(papszFiles[cFiles]);
461	RTMemFree(papszFiles);
462	}
463	return rc;
464	}
465
466	RTR3DECL(int) RTTarExtractFiles(const char pszTarFile, const char pszOutputDir, const char * const *papszFiles, size_t cFiles)
467	{
468	/* Validate input */
469	AssertPtrReturn(pszTarFile, VERR_INVALID_POINTER);
470	AssertPtrReturn(pszOutputDir, VERR_INVALID_POINTER);
471	AssertPtrReturn(papszFiles, VERR_INVALID_POINTER);
472
473	/* Open the tar file */
474	RTFILE hFile;
475	int rc = RTFileOpen(&hFile, pszTarFile, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
476	if (RT_FAILURE(rc))
477	return rc;
478
479	/* Iterate through the tar file record by record. */
480	RTTARRECORD record;
481	char paExtracted = (char )RTMemTmpAllocZ(sizeof(char ) cFiles);
482	if (paExtracted)
483	{
484	size_t cExtracted = 0;
485	for (;;)
486	{
487	rc = RTFileRead(hFile, &record, sizeof(record), NULL);
488	/* Check for error or EOF. */
489	if (RT_FAILURE(rc))
490	break;
491	/* Check for EOF & data integrity */
492	rc = rtTarCheckHeader(&record);
493	if (RT_FAILURE(rc))
494	break;
495	/* We support normal files only */
496	if ( record.h.linkflag == LF_OLDNORMAL
497	\|\| record.h.linkflag == LF_NORMAL)
498	{
499	bool fFound = false;
500	for (size_t i = 0; i < cFiles; ++i)
501	{
502	if (!RTStrCmp(record.h.name, papszFiles[i]))
503	{
504	fFound = true;
505	if (cExtracted < cFiles)
506	{
507	char *pszTargetFile;
508	rc = RTStrAPrintf(&pszTargetFile, "%s/%s", pszOutputDir, papszFiles[i]);
509	if (rc > 0)
510	{
511	rc = rtTarCopyFileFrom(hFile, pszTargetFile, &record);
512	if (RT_SUCCESS(rc))
513	paExtracted[cExtracted++] = pszTargetFile;
514	else
515	RTStrFree(pszTargetFile);
516	}
517	else
518	rc = VERR_NO_MEMORY;
519	}
520	else
521	rc = VERR_ALREADY_EXISTS;
522	break;
523	}
524	}
525	if (RT_FAILURE(rc))
526	break;
527	/* If the current record isn't a file in the file list we have to
528	* skip the data */
529	if (!fFound)
530	{
531	rc = rtTarSkipData(hFile, &record);
532	if (RT_FAILURE(rc))
533	break;
534	}
535	}
536	}
537
538	if (rc == VERR_EOF)
539	rc = VINF_SUCCESS;
540
541	/* If we didn't found all files, indicate an error */
542	if (cExtracted != cFiles && RT_SUCCESS(rc))
543	rc = VERR_FILE_NOT_FOUND;
544
545	/* Cleanup the names of the extracted files, deleting them on failure. */
546	while (cExtracted-- > 0)
547	{
548	if (RT_FAILURE(rc))
549	RTFileDelete(paExtracted[cExtracted]);
550	RTStrFree(paExtracted[cExtracted]);
551	}
552	RTMemTmpFree(paExtracted);
553	}
554	else
555	rc = VERR_NO_TMP_MEMORY;
556
557	RTFileClose(hFile);
558	return rc;
559	}
560
561	RTR3DECL(int) RTTarExtractByIndex(const char pszTarFile, const char pszOutputDir, size_t iIndex, char **ppszFileName)
562	{
563	/* Validate input */
564	AssertPtrReturn(pszTarFile, VERR_INVALID_POINTER);
565	AssertPtrReturn(pszOutputDir, VERR_INVALID_POINTER);
566
567	/* Open the tar file */
568	RTFILE hFile;
569	int rc = RTFileOpen(&hFile, pszTarFile, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
570	if (RT_FAILURE(rc))
571	return rc;
572
573	/* Iterate through the tar file record by record. */
574	RTTARRECORD record;
575	size_t iFile = 0;
576	bool fFound = false;
577	for (;;)
578	{
579	rc = RTFileRead(hFile, &record, sizeof(record), NULL);
580	/* Check for error or EOF. */
581	if (RT_FAILURE(rc))
582	break;
583	/* Check for EOF & data integrity */
584	rc = rtTarCheckHeader(&record);
585	if (RT_FAILURE(rc))
586	break;
587	/* We support normal files only */
588	if ( record.h.linkflag == LF_OLDNORMAL
589	\|\| record.h.linkflag == LF_NORMAL)
590	{
591	if (iIndex == iFile)
592	{
593	fFound = true;
594	char *pszTargetName;
595	rc = RTStrAPrintf(&pszTargetName, "%s/%s", pszOutputDir, record.h.name);
596	if (rc > 0)
597	{
598	rc = rtTarCopyFileFrom(hFile, pszTargetName, &record);
599	/* On success pass on the filename if requested. */
600	if ( RT_SUCCESS(rc)
601	&& ppszFileName)
602	*ppszFileName = pszTargetName;
603	else
604	RTStrFree(pszTargetName);
605	}
606	else
607	rc = VERR_NO_MEMORY;
608	break;
609	}
610	}
611	rc = rtTarSkipData(hFile, &record);
612	if (RT_FAILURE(rc))
613	break;
614	++iFile;
615	}
616
617	RTFileClose(hFile);
618
619	if (rc == VERR_EOF)
620	rc = VINF_SUCCESS;
621
622	/* If we didn't found the index, indicate an error */
623	if (!fFound && RT_SUCCESS(rc))
624	rc = VERR_FILE_NOT_FOUND;
625
626	return rc;
627	}
628
629	RTR3DECL(int) RTTarCreate(const char pszTarFile, const char const *papszFiles, size_t cFiles)
630	{
631	/* Validate input */
632	AssertPtrReturn(pszTarFile, VERR_INVALID_POINTER);
633	AssertPtrReturn(papszFiles, VERR_INVALID_POINTER);
634
635	/* Open the tar file */
636	RTFILE hFile;
637	int rc = RTFileOpen(&hFile, pszTarFile, RTFILE_O_CREATE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
638	if (RT_FAILURE(rc))
639	return rc;
640
641	for (size_t i = 0; i < cFiles; ++i)
642	{
643	rc = rtTarCopyFileTo(hFile, papszFiles[i]);
644	if (RT_FAILURE(rc))
645	break;
646	}
647
648	/* gtar gives a warning, but the documentation says EOF is indicated by a
649	* zero block. Disabled for now. */
650	#if 0
651	if (RT_SUCCESS(rc))
652	{
653	/* Append the EOF record which is filled all by zeros */
654	RTTARRECORD record;
655	ASMMemFill32(&record, sizeof(record), 0);
656	rc = RTFileWrite(hFile, &record, sizeof(record), NULL);
657	}
658	#endif
659
660	/* Time to close the new tar archive */
661	RTFileClose(hFile);
662
663	/* Delete the freshly created tar archive on failure */
664	if (RT_FAILURE(rc))
665	RTFileDelete(pszTarFile);
666
667	return rc;
668	}
669

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source: vbox/trunk/src/VBox/Runtime/common/misc/tar.cpp@ 25660

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