source: MondoRescue/branches/3.2/mindi-busybox/archival/tar.c

Last change on this file was 3232, checked in by Bruno Cornec, 10 years ago
  • Update mindi-busybox to 1.21.1
File size: 35.2 KB
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1/* vi: set sw=4 ts=4: */
2/*
3 * Mini tar implementation for busybox
4 *
5 * Modified to use common extraction code used by ar, cpio, dpkg-deb, dpkg
6 * by Glenn McGrath
7 *
8 * Note, that as of BusyBox-0.43, tar has been completely rewritten from the
9 * ground up. It still has remnants of the old code lying about, but it is
10 * very different now (i.e., cleaner, less global variables, etc.)
11 *
12 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
13 *
14 * Based in part in the tar implementation in sash
15 * Copyright (c) 1999 by David I. Bell
16 * Permission is granted to use, distribute, or modify this source,
17 * provided that this copyright notice remains intact.
18 * Permission to distribute sash derived code under GPL has been granted.
19 *
20 * Based in part on the tar implementation from busybox-0.28
21 * Copyright (C) 1995 Bruce Perens
22 *
23 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
24 */
25
26/* TODO: security with -C DESTDIR option can be enhanced.
27 * Consider tar file created via:
28 * $ tar cvf bug.tar anything.txt
29 * $ ln -s /tmp symlink
30 * $ tar --append -f bug.tar symlink
31 * $ rm symlink
32 * $ mkdir symlink
33 * $ tar --append -f bug.tar symlink/evil.py
34 *
35 * This will result in an archive which contains:
36 * $ tar --list -f bug.tar
37 * anything.txt
38 * symlink
39 * symlink/evil.py
40 *
41 * Untarring it puts evil.py in '/tmp' even if the -C DESTDIR is given.
42 * This doesn't feel right, and IIRC GNU tar doesn't do that.
43 */
44
45#include <fnmatch.h>
46#include "libbb.h"
47#include "bb_archive.h"
48/* FIXME: Stop using this non-standard feature */
49#ifndef FNM_LEADING_DIR
50# define FNM_LEADING_DIR 0
51#endif
52
53
54//#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
55#define DBG(...) ((void)0)
56
57
58#define block_buf bb_common_bufsiz1
59
60
61#if !ENABLE_FEATURE_SEAMLESS_GZ && !ENABLE_FEATURE_SEAMLESS_BZ2
62/* Do not pass gzip flag to writeTarFile() */
63#define writeTarFile(tar_fd, verboseFlag, recurseFlags, include, exclude, gzip) \
64 writeTarFile(tar_fd, verboseFlag, recurseFlags, include, exclude)
65#endif
66
67
68#if ENABLE_FEATURE_TAR_CREATE
69
70/*
71** writeTarFile(), writeFileToTarball(), and writeTarHeader() are
72** the only functions that deal with the HardLinkInfo structure.
73** Even these functions use the xxxHardLinkInfo() functions.
74*/
75typedef struct HardLinkInfo {
76 struct HardLinkInfo *next; /* Next entry in list */
77 dev_t dev; /* Device number */
78 ino_t ino; /* Inode number */
79// short linkCount; /* (Hard) Link Count */
80 char name[1]; /* Start of filename (must be last) */
81} HardLinkInfo;
82
83/* Some info to be carried along when creating a new tarball */
84typedef struct TarBallInfo {
85 int tarFd; /* Open-for-write file descriptor
86 * for the tarball */
87 int verboseFlag; /* Whether to print extra stuff or not */
88 const llist_t *excludeList; /* List of files to not include */
89 HardLinkInfo *hlInfoHead; /* Hard Link Tracking Information */
90 HardLinkInfo *hlInfo; /* Hard Link Info for the current file */
91//TODO: save only st_dev + st_ino
92 struct stat tarFileStatBuf; /* Stat info for the tarball, letting
93 * us know the inode and device that the
94 * tarball lives, so we can avoid trying
95 * to include the tarball into itself */
96} TarBallInfo;
97
98/* A nice enum with all the possible tar file content types */
99enum {
100 REGTYPE = '0', /* regular file */
101 REGTYPE0 = '\0', /* regular file (ancient bug compat) */
102 LNKTYPE = '1', /* hard link */
103 SYMTYPE = '2', /* symbolic link */
104 CHRTYPE = '3', /* character special */
105 BLKTYPE = '4', /* block special */
106 DIRTYPE = '5', /* directory */
107 FIFOTYPE = '6', /* FIFO special */
108 CONTTYPE = '7', /* reserved */
109 GNULONGLINK = 'K', /* GNU long (>100 chars) link name */
110 GNULONGNAME = 'L', /* GNU long (>100 chars) file name */
111};
112
113/* Might be faster (and bigger) if the dev/ino were stored in numeric order;) */
114static void addHardLinkInfo(HardLinkInfo **hlInfoHeadPtr,
115 struct stat *statbuf,
116 const char *fileName)
117{
118 /* Note: hlInfoHeadPtr can never be NULL! */
119 HardLinkInfo *hlInfo;
120
121 hlInfo = xmalloc(sizeof(HardLinkInfo) + strlen(fileName));
122 hlInfo->next = *hlInfoHeadPtr;
123 *hlInfoHeadPtr = hlInfo;
124 hlInfo->dev = statbuf->st_dev;
125 hlInfo->ino = statbuf->st_ino;
126// hlInfo->linkCount = statbuf->st_nlink;
127 strcpy(hlInfo->name, fileName);
128}
129
130static void freeHardLinkInfo(HardLinkInfo **hlInfoHeadPtr)
131{
132 HardLinkInfo *hlInfo;
133 HardLinkInfo *hlInfoNext;
134
135 if (hlInfoHeadPtr) {
136 hlInfo = *hlInfoHeadPtr;
137 while (hlInfo) {
138 hlInfoNext = hlInfo->next;
139 free(hlInfo);
140 hlInfo = hlInfoNext;
141 }
142 *hlInfoHeadPtr = NULL;
143 }
144}
145
146/* Might be faster (and bigger) if the dev/ino were stored in numeric order ;) */
147static HardLinkInfo *findHardLinkInfo(HardLinkInfo *hlInfo, struct stat *statbuf)
148{
149 while (hlInfo) {
150 if (statbuf->st_ino == hlInfo->ino
151 && statbuf->st_dev == hlInfo->dev
152 ) {
153 DBG("found hardlink:'%s'", hlInfo->name);
154 break;
155 }
156 hlInfo = hlInfo->next;
157 }
158 return hlInfo;
159}
160
161/* Put an octal string into the specified buffer.
162 * The number is zero padded and possibly null terminated.
163 * Stores low-order bits only if whole value does not fit. */
164static void putOctal(char *cp, int len, off_t value)
165{
166 char tempBuffer[sizeof(off_t)*3 + 1];
167 char *tempString = tempBuffer;
168 int width;
169
170 width = sprintf(tempBuffer, "%0*"OFF_FMT"o", len, value);
171 tempString += (width - len);
172
173 /* If string has leading zeroes, we can drop one */
174 /* and field will have trailing '\0' */
175 /* (increases chances of compat with other tars) */
176 if (tempString[0] == '0')
177 tempString++;
178
179 /* Copy the string to the field */
180 memcpy(cp, tempString, len);
181}
182#define PUT_OCTAL(a, b) putOctal((a), sizeof(a), (b))
183
184static void chksum_and_xwrite(int fd, struct tar_header_t* hp)
185{
186 /* POSIX says that checksum is done on unsigned bytes
187 * (Sun and HP-UX gets it wrong... more details in
188 * GNU tar source) */
189 const unsigned char *cp;
190 int chksum, size;
191
192 strcpy(hp->magic, "ustar ");
193
194 /* Calculate and store the checksum (i.e., the sum of all of the bytes of
195 * the header). The checksum field must be filled with blanks for the
196 * calculation. The checksum field is formatted differently from the
197 * other fields: it has 6 digits, a null, then a space -- rather than
198 * digits, followed by a null like the other fields... */
199 memset(hp->chksum, ' ', sizeof(hp->chksum));
200 cp = (const unsigned char *) hp;
201 chksum = 0;
202 size = sizeof(*hp);
203 do { chksum += *cp++; } while (--size);
204 putOctal(hp->chksum, sizeof(hp->chksum)-1, chksum);
205
206 /* Now write the header out to disk */
207 xwrite(fd, hp, sizeof(*hp));
208}
209
210#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
211static void writeLongname(int fd, int type, const char *name, int dir)
212{
213 static const struct {
214 char mode[8]; /* 100-107 */
215 char uid[8]; /* 108-115 */
216 char gid[8]; /* 116-123 */
217 char size[12]; /* 124-135 */
218 char mtime[12]; /* 136-147 */
219 } prefilled = {
220 "0000000",
221 "0000000",
222 "0000000",
223 "00000000000",
224 "00000000000",
225 };
226 struct tar_header_t header;
227 int size;
228
229 dir = !!dir; /* normalize: 0/1 */
230 size = strlen(name) + 1 + dir; /* GNU tar uses strlen+1 */
231 /* + dir: account for possible '/' */
232
233 memset(&header, 0, sizeof(header));
234 strcpy(header.name, "././@LongLink");
235 memcpy(header.mode, prefilled.mode, sizeof(prefilled));
236 PUT_OCTAL(header.size, size);
237 header.typeflag = type;
238 chksum_and_xwrite(fd, &header);
239
240 /* Write filename[/] and pad the block. */
241 /* dir=0: writes 'name<NUL>', pads */
242 /* dir=1: writes 'name', writes '/<NUL>', pads */
243 dir *= 2;
244 xwrite(fd, name, size - dir);
245 xwrite(fd, "/", dir);
246 size = (-size) & (TAR_BLOCK_SIZE-1);
247 memset(&header, 0, size);
248 xwrite(fd, &header, size);
249}
250#endif
251
252/* Write out a tar header for the specified file/directory/whatever */
253static int writeTarHeader(struct TarBallInfo *tbInfo,
254 const char *header_name, const char *fileName, struct stat *statbuf)
255{
256 struct tar_header_t header;
257
258 memset(&header, 0, sizeof(header));
259
260 strncpy(header.name, header_name, sizeof(header.name));
261
262 /* POSIX says to mask mode with 07777. */
263 PUT_OCTAL(header.mode, statbuf->st_mode & 07777);
264 PUT_OCTAL(header.uid, statbuf->st_uid);
265 PUT_OCTAL(header.gid, statbuf->st_gid);
266 memset(header.size, '0', sizeof(header.size)-1); /* Regular file size is handled later */
267 /* users report that files with negative st_mtime cause trouble, so: */
268 PUT_OCTAL(header.mtime, statbuf->st_mtime >= 0 ? statbuf->st_mtime : 0);
269
270 /* Enter the user and group names */
271 safe_strncpy(header.uname, get_cached_username(statbuf->st_uid), sizeof(header.uname));
272 safe_strncpy(header.gname, get_cached_groupname(statbuf->st_gid), sizeof(header.gname));
273
274 if (tbInfo->hlInfo) {
275 /* This is a hard link */
276 header.typeflag = LNKTYPE;
277 strncpy(header.linkname, tbInfo->hlInfo->name,
278 sizeof(header.linkname));
279#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
280 /* Write out long linkname if needed */
281 if (header.linkname[sizeof(header.linkname)-1])
282 writeLongname(tbInfo->tarFd, GNULONGLINK,
283 tbInfo->hlInfo->name, 0);
284#endif
285 } else if (S_ISLNK(statbuf->st_mode)) {
286 char *lpath = xmalloc_readlink_or_warn(fileName);
287 if (!lpath)
288 return FALSE;
289 header.typeflag = SYMTYPE;
290 strncpy(header.linkname, lpath, sizeof(header.linkname));
291#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
292 /* Write out long linkname if needed */
293 if (header.linkname[sizeof(header.linkname)-1])
294 writeLongname(tbInfo->tarFd, GNULONGLINK, lpath, 0);
295#else
296 /* If it is larger than 100 bytes, bail out */
297 if (header.linkname[sizeof(header.linkname)-1]) {
298 free(lpath);
299 bb_error_msg("names longer than "NAME_SIZE_STR" chars not supported");
300 return FALSE;
301 }
302#endif
303 free(lpath);
304 } else if (S_ISDIR(statbuf->st_mode)) {
305 header.typeflag = DIRTYPE;
306 /* Append '/' only if there is a space for it */
307 if (!header.name[sizeof(header.name)-1])
308 header.name[strlen(header.name)] = '/';
309 } else if (S_ISCHR(statbuf->st_mode)) {
310 header.typeflag = CHRTYPE;
311 PUT_OCTAL(header.devmajor, major(statbuf->st_rdev));
312 PUT_OCTAL(header.devminor, minor(statbuf->st_rdev));
313 } else if (S_ISBLK(statbuf->st_mode)) {
314 header.typeflag = BLKTYPE;
315 PUT_OCTAL(header.devmajor, major(statbuf->st_rdev));
316 PUT_OCTAL(header.devminor, minor(statbuf->st_rdev));
317 } else if (S_ISFIFO(statbuf->st_mode)) {
318 header.typeflag = FIFOTYPE;
319 } else if (S_ISREG(statbuf->st_mode)) {
320 /* header.size field is 12 bytes long */
321 /* Does octal-encoded size fit? */
322 uoff_t filesize = statbuf->st_size;
323 if (sizeof(filesize) <= 4
324 || filesize <= (uoff_t)0777777777777LL
325 ) {
326 PUT_OCTAL(header.size, filesize);
327 }
328 /* Does base256-encoded size fit?
329 * It always does unless off_t is wider than 64 bits.
330 */
331 else if (ENABLE_FEATURE_TAR_GNU_EXTENSIONS
332#if ULLONG_MAX > 0xffffffffffffffffLL /* 2^64-1 */
333 && (filesize <= 0x3fffffffffffffffffffffffLL)
334#endif
335 ) {
336 /* GNU tar uses "base-256 encoding" for very large numbers.
337 * Encoding is binary, with highest bit always set as a marker
338 * and sign in next-highest bit:
339 * 80 00 .. 00 - zero
340 * bf ff .. ff - largest positive number
341 * ff ff .. ff - minus 1
342 * c0 00 .. 00 - smallest negative number
343 */
344 char *p8 = header.size + sizeof(header.size);
345 do {
346 *--p8 = (uint8_t)filesize;
347 filesize >>= 8;
348 } while (p8 != header.size);
349 *p8 |= 0x80;
350 } else {
351 bb_error_msg_and_die("can't store file '%s' "
352 "of size %"OFF_FMT"u, aborting",
353 fileName, statbuf->st_size);
354 }
355 header.typeflag = REGTYPE;
356 } else {
357 bb_error_msg("%s: unknown file type", fileName);
358 return FALSE;
359 }
360
361#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
362 /* Write out long name if needed */
363 /* (we, like GNU tar, output long linkname *before* long name) */
364 if (header.name[sizeof(header.name)-1])
365 writeLongname(tbInfo->tarFd, GNULONGNAME,
366 header_name, S_ISDIR(statbuf->st_mode));
367#endif
368
369 /* Now write the header out to disk */
370 chksum_and_xwrite(tbInfo->tarFd, &header);
371
372 /* Now do the verbose thing (or not) */
373 if (tbInfo->verboseFlag) {
374 FILE *vbFd = stdout;
375
376 /* If archive goes to stdout, verbose goes to stderr */
377 if (tbInfo->tarFd == STDOUT_FILENO)
378 vbFd = stderr;
379 /* GNU "tar cvvf" prints "extended" listing a-la "ls -l" */
380 /* We don't have such excesses here: for us "v" == "vv" */
381 /* '/' is probably a GNUism */
382 fprintf(vbFd, "%s%s\n", header_name,
383 S_ISDIR(statbuf->st_mode) ? "/" : "");
384 }
385
386 return TRUE;
387}
388
389#if ENABLE_FEATURE_TAR_FROM
390static int exclude_file(const llist_t *excluded_files, const char *file)
391{
392 while (excluded_files) {
393 if (excluded_files->data[0] == '/') {
394 if (fnmatch(excluded_files->data, file,
395 FNM_PATHNAME | FNM_LEADING_DIR) == 0)
396 return 1;
397 } else {
398 const char *p;
399
400 for (p = file; p[0] != '\0'; p++) {
401 if ((p == file || p[-1] == '/')
402 && p[0] != '/'
403 && fnmatch(excluded_files->data, p,
404 FNM_PATHNAME | FNM_LEADING_DIR) == 0
405 ) {
406 return 1;
407 }
408 }
409 }
410 excluded_files = excluded_files->link;
411 }
412
413 return 0;
414}
415#else
416# define exclude_file(excluded_files, file) 0
417#endif
418
419static int FAST_FUNC writeFileToTarball(const char *fileName, struct stat *statbuf,
420 void *userData, int depth UNUSED_PARAM)
421{
422 struct TarBallInfo *tbInfo = (struct TarBallInfo *) userData;
423 const char *header_name;
424 int inputFileFd = -1;
425
426 DBG("writeFileToTarball('%s')", fileName);
427
428 /* Strip leading '/' and such (must be before memorizing hardlink's name) */
429 header_name = strip_unsafe_prefix(fileName);
430
431 if (header_name[0] == '\0')
432 return TRUE;
433
434 /* It is against the rules to archive a socket */
435 if (S_ISSOCK(statbuf->st_mode)) {
436 bb_error_msg("%s: socket ignored", fileName);
437 return TRUE;
438 }
439
440 /*
441 * Check to see if we are dealing with a hard link.
442 * If so -
443 * Treat the first occurance of a given dev/inode as a file while
444 * treating any additional occurances as hard links. This is done
445 * by adding the file information to the HardLinkInfo linked list.
446 */
447 tbInfo->hlInfo = NULL;
448 if (!S_ISDIR(statbuf->st_mode) && statbuf->st_nlink > 1) {
449 DBG("'%s': st_nlink > 1", header_name);
450 tbInfo->hlInfo = findHardLinkInfo(tbInfo->hlInfoHead, statbuf);
451 if (tbInfo->hlInfo == NULL) {
452 DBG("'%s': addHardLinkInfo", header_name);
453 addHardLinkInfo(&tbInfo->hlInfoHead, statbuf, header_name);
454 }
455 }
456
457 /* It is a bad idea to store the archive we are in the process of creating,
458 * so check the device and inode to be sure that this particular file isn't
459 * the new tarball */
460 if (tbInfo->tarFileStatBuf.st_dev == statbuf->st_dev
461 && tbInfo->tarFileStatBuf.st_ino == statbuf->st_ino
462 ) {
463 bb_error_msg("%s: file is the archive; skipping", fileName);
464 return TRUE;
465 }
466
467 if (exclude_file(tbInfo->excludeList, header_name))
468 return SKIP;
469
470#if !ENABLE_FEATURE_TAR_GNU_EXTENSIONS
471 if (strlen(header_name) >= NAME_SIZE) {
472 bb_error_msg("names longer than "NAME_SIZE_STR" chars not supported");
473 return TRUE;
474 }
475#endif
476
477 /* Is this a regular file? */
478 if (tbInfo->hlInfo == NULL && S_ISREG(statbuf->st_mode)) {
479 /* open the file we want to archive, and make sure all is well */
480 inputFileFd = open_or_warn(fileName, O_RDONLY);
481 if (inputFileFd < 0) {
482 return FALSE;
483 }
484 }
485
486 /* Add an entry to the tarball */
487 if (writeTarHeader(tbInfo, header_name, fileName, statbuf) == FALSE) {
488 return FALSE;
489 }
490
491 /* If it was a regular file, write out the body */
492 if (inputFileFd >= 0) {
493 size_t readSize;
494 /* Write the file to the archive. */
495 /* We record size into header first, */
496 /* and then write out file. If file shrinks in between, */
497 /* tar will be corrupted. So we don't allow for that. */
498 /* NB: GNU tar 1.16 warns and pads with zeroes */
499 /* or even seeks back and updates header */
500 bb_copyfd_exact_size(inputFileFd, tbInfo->tarFd, statbuf->st_size);
501 ////off_t readSize;
502 ////readSize = bb_copyfd_size(inputFileFd, tbInfo->tarFd, statbuf->st_size);
503 ////if (readSize != statbuf->st_size && readSize >= 0) {
504 //// bb_error_msg_and_die("short read from %s, aborting", fileName);
505 ////}
506
507 /* Check that file did not grow in between? */
508 /* if (safe_read(inputFileFd, 1) == 1) warn but continue? */
509
510 close(inputFileFd);
511
512 /* Pad the file up to the tar block size */
513 /* (a few tricks here in the name of code size) */
514 readSize = (-(int)statbuf->st_size) & (TAR_BLOCK_SIZE-1);
515 memset(block_buf, 0, readSize);
516 xwrite(tbInfo->tarFd, block_buf, readSize);
517 }
518
519 return TRUE;
520}
521
522#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
523# if !(ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2)
524# define vfork_compressor(tar_fd, gzip) vfork_compressor(tar_fd)
525# endif
526/* Don't inline: vfork scares gcc and pessimizes code */
527static void NOINLINE vfork_compressor(int tar_fd, int gzip)
528{
529 pid_t gzipPid;
530# if ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2
531 const char *zip_exec = (gzip == 1) ? "gzip" : "bzip2";
532# elif ENABLE_FEATURE_SEAMLESS_GZ
533 const char *zip_exec = "gzip";
534# else /* only ENABLE_FEATURE_SEAMLESS_BZ2 */
535 const char *zip_exec = "bzip2";
536# endif
537 // On Linux, vfork never unpauses parent early, although standard
538 // allows for that. Do we want to waste bytes checking for it?
539# define WAIT_FOR_CHILD 0
540 volatile int vfork_exec_errno = 0;
541 struct fd_pair gzipDataPipe;
542# if WAIT_FOR_CHILD
543 struct fd_pair gzipStatusPipe;
544 xpiped_pair(gzipStatusPipe);
545# endif
546 xpiped_pair(gzipDataPipe);
547
548 signal(SIGPIPE, SIG_IGN); /* we only want EPIPE on errors */
549
550# if defined(__GNUC__) && __GNUC__
551 /* Avoid vfork clobbering */
552 (void) &zip_exec;
553# endif
554
555 gzipPid = xvfork();
556
557 if (gzipPid == 0) {
558 /* child */
559 /* NB: close _first_, then move fds! */
560 close(gzipDataPipe.wr);
561# if WAIT_FOR_CHILD
562 close(gzipStatusPipe.rd);
563 /* gzipStatusPipe.wr will close only on exec -
564 * parent waits for this close to happen */
565 fcntl(gzipStatusPipe.wr, F_SETFD, FD_CLOEXEC);
566# endif
567 xmove_fd(gzipDataPipe.rd, 0);
568 xmove_fd(tar_fd, 1);
569 /* exec gzip/bzip2 program/applet */
570 BB_EXECLP(zip_exec, zip_exec, "-f", NULL);
571 vfork_exec_errno = errno;
572 _exit(EXIT_FAILURE);
573 }
574
575 /* parent */
576 xmove_fd(gzipDataPipe.wr, tar_fd);
577 close(gzipDataPipe.rd);
578# if WAIT_FOR_CHILD
579 close(gzipStatusPipe.wr);
580 while (1) {
581 char buf;
582 int n;
583
584 /* Wait until child execs (or fails to) */
585 n = full_read(gzipStatusPipe.rd, &buf, 1);
586 if (n < 0 /* && errno == EAGAIN */)
587 continue; /* try it again */
588 }
589 close(gzipStatusPipe.rd);
590# endif
591 if (vfork_exec_errno) {
592 errno = vfork_exec_errno;
593 bb_perror_msg_and_die("can't execute '%s'", zip_exec);
594 }
595}
596#endif /* ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 */
597
598
599/* gcc 4.2.1 inlines it, making code bigger */
600static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
601 int recurseFlags, const llist_t *include,
602 const llist_t *exclude, int gzip)
603{
604 int errorFlag = FALSE;
605 struct TarBallInfo tbInfo;
606
607 tbInfo.hlInfoHead = NULL;
608 tbInfo.tarFd = tar_fd;
609 tbInfo.verboseFlag = verboseFlag;
610
611 /* Store the stat info for the tarball's file, so
612 * can avoid including the tarball into itself.... */
613 xfstat(tbInfo.tarFd, &tbInfo.tarFileStatBuf, "can't stat tar file");
614
615#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
616 if (gzip)
617 vfork_compressor(tbInfo.tarFd, gzip);
618#endif
619
620 tbInfo.excludeList = exclude;
621
622 /* Read the directory/files and iterate over them one at a time */
623 while (include) {
624 if (!recursive_action(include->data, recurseFlags,
625 writeFileToTarball, writeFileToTarball, &tbInfo, 0)
626 ) {
627 errorFlag = TRUE;
628 }
629 include = include->link;
630 }
631 /* Write two empty blocks to the end of the archive */
632 memset(block_buf, 0, 2*TAR_BLOCK_SIZE);
633 xwrite(tbInfo.tarFd, block_buf, 2*TAR_BLOCK_SIZE);
634
635 /* To be pedantically correct, we would check if the tarball
636 * is smaller than 20 tar blocks, and pad it if it was smaller,
637 * but that isn't necessary for GNU tar interoperability, and
638 * so is considered a waste of space */
639
640 /* Close so the child process (if any) will exit */
641 close(tbInfo.tarFd);
642
643 /* Hang up the tools, close up shop, head home */
644 if (ENABLE_FEATURE_CLEAN_UP)
645 freeHardLinkInfo(&tbInfo.hlInfoHead);
646
647 if (errorFlag)
648 bb_error_msg("error exit delayed from previous errors");
649
650#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
651 if (gzip) {
652 int status;
653 if (safe_waitpid(-1, &status, 0) == -1)
654 bb_perror_msg("waitpid");
655 else if (!WIFEXITED(status) || WEXITSTATUS(status))
656 /* gzip was killed or has exited with nonzero! */
657 errorFlag = TRUE;
658 }
659#endif
660 return errorFlag;
661}
662#else
663int writeTarFile(int tar_fd, int verboseFlag,
664 int recurseFlags, const llist_t *include,
665 const llist_t *exclude, int gzip);
666#endif /* FEATURE_TAR_CREATE */
667
668#if ENABLE_FEATURE_TAR_FROM
669static llist_t *append_file_list_to_list(llist_t *list)
670{
671 FILE *src_stream;
672 char *line;
673 llist_t *newlist = NULL;
674
675 while (list) {
676 src_stream = xfopen_stdin(llist_pop(&list));
677 while ((line = xmalloc_fgetline(src_stream)) != NULL) {
678 /* kill trailing '/' unless the string is just "/" */
679 char *cp = last_char_is(line, '/');
680 if (cp > line)
681 *cp = '\0';
682 llist_add_to(&newlist, line);
683 }
684 fclose(src_stream);
685 }
686 return newlist;
687}
688#else
689# define append_file_list_to_list(x) 0
690#endif
691
692//usage:#define tar_trivial_usage
693//usage: "-[" IF_FEATURE_TAR_CREATE("c") "xt"
694//usage: IF_FEATURE_SEAMLESS_Z("Z")
695//usage: IF_FEATURE_SEAMLESS_GZ("z")
696//usage: IF_FEATURE_SEAMLESS_XZ("J")
697//usage: IF_FEATURE_SEAMLESS_BZ2("j")
698//usage: IF_FEATURE_SEAMLESS_LZMA("a")
699//usage: IF_FEATURE_TAR_CREATE("h")
700//usage: IF_FEATURE_TAR_NOPRESERVE_TIME("m")
701//usage: "vO] "
702//usage: IF_FEATURE_TAR_FROM("[-X FILE] [-T FILE] ")
703//usage: "[-f TARFILE] [-C DIR] [FILE]..."
704//usage:#define tar_full_usage "\n\n"
705//usage: IF_FEATURE_TAR_CREATE("Create, extract, ")
706//usage: IF_NOT_FEATURE_TAR_CREATE("Extract ")
707//usage: "or list files from a tar file\n"
708//usage: "\nOperation:"
709//usage: IF_FEATURE_TAR_CREATE(
710//usage: "\n c Create"
711//usage: )
712//usage: "\n x Extract"
713//usage: "\n t List"
714//usage: "\n f Name of TARFILE ('-' for stdin/out)"
715//usage: "\n C Change to DIR before operation"
716//usage: "\n v Verbose"
717//usage: IF_FEATURE_SEAMLESS_Z(
718//usage: "\n Z (De)compress using compress"
719//usage: )
720//usage: IF_FEATURE_SEAMLESS_GZ(
721//usage: "\n z (De)compress using gzip"
722//usage: )
723//usage: IF_FEATURE_SEAMLESS_XZ(
724//usage: "\n J (De)compress using xz"
725//usage: )
726//usage: IF_FEATURE_SEAMLESS_BZ2(
727//usage: "\n j (De)compress using bzip2"
728//usage: )
729//usage: IF_FEATURE_SEAMLESS_LZMA(
730//usage: "\n a (De)compress using lzma"
731//usage: )
732//usage: "\n O Extract to stdout"
733//usage: IF_FEATURE_TAR_CREATE(
734//usage: "\n h Follow symlinks"
735//usage: )
736//usage: IF_FEATURE_TAR_NOPRESERVE_TIME(
737//usage: "\n m Don't restore mtime"
738//usage: )
739//usage: IF_FEATURE_TAR_FROM(
740//usage: IF_FEATURE_TAR_LONG_OPTIONS(
741//usage: "\n exclude File to exclude"
742//usage: )
743//usage: "\n X File with names to exclude"
744//usage: "\n T File with names to include"
745//usage: )
746//usage:
747//usage:#define tar_example_usage
748//usage: "$ zcat /tmp/tarball.tar.gz | tar -xf -\n"
749//usage: "$ tar -cf /tmp/tarball.tar /usr/local\n"
750
751// Supported but aren't in --help:
752// o no-same-owner
753// p same-permissions
754// k keep-old
755// no-recursion
756// numeric-owner
757// no-same-permissions
758// overwrite
759//IF_FEATURE_TAR_TO_COMMAND(
760// to-command
761//)
762
763enum {
764 OPTBIT_KEEP_OLD = 8,
765 IF_FEATURE_TAR_CREATE( OPTBIT_CREATE ,)
766 IF_FEATURE_TAR_CREATE( OPTBIT_DEREFERENCE ,)
767 IF_FEATURE_SEAMLESS_BZ2( OPTBIT_BZIP2 ,)
768 IF_FEATURE_SEAMLESS_LZMA(OPTBIT_LZMA ,)
769 IF_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,)
770 IF_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
771 IF_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,)
772 IF_FEATURE_SEAMLESS_XZ( OPTBIT_XZ ,) // 16th bit
773 IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
774 IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
775#if ENABLE_FEATURE_TAR_LONG_OPTIONS
776 OPTBIT_NORECURSION,
777 IF_FEATURE_TAR_TO_COMMAND(OPTBIT_2COMMAND ,)
778 OPTBIT_NUMERIC_OWNER,
779 OPTBIT_NOPRESERVE_PERM,
780 OPTBIT_OVERWRITE,
781#endif
782 OPT_TEST = 1 << 0, // t
783 OPT_EXTRACT = 1 << 1, // x
784 OPT_BASEDIR = 1 << 2, // C
785 OPT_TARNAME = 1 << 3, // f
786 OPT_2STDOUT = 1 << 4, // O
787 OPT_NOPRESERVE_OWNER = 1 << 5, // o == no-same-owner
788 OPT_P = 1 << 6, // p
789 OPT_VERBOSE = 1 << 7, // v
790 OPT_KEEP_OLD = 1 << 8, // k
791 OPT_CREATE = IF_FEATURE_TAR_CREATE( (1 << OPTBIT_CREATE )) + 0, // c
792 OPT_DEREFERENCE = IF_FEATURE_TAR_CREATE( (1 << OPTBIT_DEREFERENCE )) + 0, // h
793 OPT_BZIP2 = IF_FEATURE_SEAMLESS_BZ2( (1 << OPTBIT_BZIP2 )) + 0, // j
794 OPT_LZMA = IF_FEATURE_SEAMLESS_LZMA((1 << OPTBIT_LZMA )) + 0, // a
795 OPT_INCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_INCLUDE_FROM)) + 0, // T
796 OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
797 OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
798 OPT_XZ = IF_FEATURE_SEAMLESS_XZ( (1 << OPTBIT_XZ )) + 0, // J
799 OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
800 OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
801 OPT_NORECURSION = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NORECURSION )) + 0, // no-recursion
802 OPT_2COMMAND = IF_FEATURE_TAR_TO_COMMAND( (1 << OPTBIT_2COMMAND )) + 0, // to-command
803 OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
804 OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
805 OPT_OVERWRITE = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE )) + 0, // overwrite
806
807 OPT_ANY_COMPRESS = (OPT_BZIP2 | OPT_LZMA | OPT_GZIP | OPT_XZ | OPT_COMPRESS),
808};
809#if ENABLE_FEATURE_TAR_LONG_OPTIONS
810static const char tar_longopts[] ALIGN1 =
811 "list\0" No_argument "t"
812 "extract\0" No_argument "x"
813 "directory\0" Required_argument "C"
814 "file\0" Required_argument "f"
815 "to-stdout\0" No_argument "O"
816 /* do not restore owner */
817 /* Note: GNU tar handles 'o' as no-same-owner only on extract,
818 * on create, 'o' is --old-archive. We do not support --old-archive. */
819 "no-same-owner\0" No_argument "o"
820 "same-permissions\0" No_argument "p"
821 "verbose\0" No_argument "v"
822 "keep-old\0" No_argument "k"
823# if ENABLE_FEATURE_TAR_CREATE
824 "create\0" No_argument "c"
825 "dereference\0" No_argument "h"
826# endif
827# if ENABLE_FEATURE_SEAMLESS_BZ2
828 "bzip2\0" No_argument "j"
829# endif
830# if ENABLE_FEATURE_SEAMLESS_LZMA
831 "lzma\0" No_argument "a"
832# endif
833# if ENABLE_FEATURE_TAR_FROM
834 "files-from\0" Required_argument "T"
835 "exclude-from\0" Required_argument "X"
836# endif
837# if ENABLE_FEATURE_SEAMLESS_GZ
838 "gzip\0" No_argument "z"
839# endif
840# if ENABLE_FEATURE_SEAMLESS_XZ
841 "xz\0" No_argument "J"
842# endif
843# if ENABLE_FEATURE_SEAMLESS_Z
844 "compress\0" No_argument "Z"
845# endif
846# if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
847 "touch\0" No_argument "m"
848# endif
849 "no-recursion\0" No_argument "\xfa"
850# if ENABLE_FEATURE_TAR_TO_COMMAND
851 "to-command\0" Required_argument "\xfb"
852# endif
853 /* use numeric uid/gid from tar header, not textual */
854 "numeric-owner\0" No_argument "\xfc"
855 /* do not restore mode */
856 "no-same-permissions\0" No_argument "\xfd"
857 /* on unpack, open with O_TRUNC and !O_EXCL */
858 "overwrite\0" No_argument "\xfe"
859 /* --exclude takes next bit position in option mask, */
860 /* therefore we have to put it _after_ --no-same-permissions */
861# if ENABLE_FEATURE_TAR_FROM
862 "exclude\0" Required_argument "\xff"
863# endif
864 ;
865#endif
866
867int tar_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
868int tar_main(int argc UNUSED_PARAM, char **argv)
869{
870 archive_handle_t *tar_handle;
871 char *base_dir = NULL;
872 const char *tar_filename = "-";
873 unsigned opt;
874 int verboseFlag = 0;
875#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
876 llist_t *excludes = NULL;
877#endif
878
879 /* Initialise default values */
880 tar_handle = init_handle();
881 tar_handle->ah_flags = ARCHIVE_CREATE_LEADING_DIRS
882 | ARCHIVE_RESTORE_DATE
883 | ARCHIVE_UNLINK_OLD;
884
885 /* Apparently only root's tar preserves perms (see bug 3844) */
886 if (getuid() != 0)
887 tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_PERM;
888
889 /* Prepend '-' to the first argument if required */
890 opt_complementary = "--:" // first arg is options
891 "tt:vv:" // count -t,-v
892 IF_FEATURE_TAR_FROM("X::T::") // cumulative lists
893#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
894 "\xff::" // cumulative lists for --exclude
895#endif
896 IF_FEATURE_TAR_CREATE("c:") "t:x:" // at least one of these is reqd
897 IF_FEATURE_TAR_CREATE("c--tx:t--cx:x--ct") // mutually exclusive
898 IF_NOT_FEATURE_TAR_CREATE("t--x:x--t"); // mutually exclusive
899#if ENABLE_FEATURE_TAR_LONG_OPTIONS
900 applet_long_options = tar_longopts;
901#endif
902#if ENABLE_DESKTOP
903 if (argv[1] && argv[1][0] != '-') {
904 /* Compat:
905 * 1st argument without dash handles options with parameters
906 * differently from dashed one: it takes *next argv[i]*
907 * as paramenter even if there are more chars in 1st argument:
908 * "tar fx TARFILE" - "x" is not taken as f's param
909 * but is interpreted as -x option
910 * "tar -xf TARFILE" - dashed equivalent of the above
911 * "tar -fx ..." - "x" is taken as f's param
912 * getopt32 wouldn't handle 1st command correctly.
913 * Unfortunately, people do use such commands.
914 * We massage argv[1] to work around it by moving 'f'
915 * to the end of the string.
916 * More contrived "tar fCx TARFILE DIR" still fails,
917 * but such commands are much less likely to be used.
918 */
919 char *f = strchr(argv[1], 'f');
920 if (f) {
921 while (f[1] != '\0') {
922 *f = f[1];
923 f++;
924 }
925 *f = 'f';
926 }
927 }
928#endif
929 opt = getopt32(argv,
930 "txC:f:Oopvk"
931 IF_FEATURE_TAR_CREATE( "ch" )
932 IF_FEATURE_SEAMLESS_BZ2( "j" )
933 IF_FEATURE_SEAMLESS_LZMA("a" )
934 IF_FEATURE_TAR_FROM( "T:X:")
935 IF_FEATURE_SEAMLESS_GZ( "z" )
936 IF_FEATURE_SEAMLESS_XZ( "J" )
937 IF_FEATURE_SEAMLESS_Z( "Z" )
938 IF_FEATURE_TAR_NOPRESERVE_TIME("m")
939 , &base_dir // -C dir
940 , &tar_filename // -f filename
941 IF_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T
942 IF_FEATURE_TAR_FROM(, &(tar_handle->reject)) // X
943 IF_FEATURE_TAR_TO_COMMAND(, &(tar_handle->tar__to_command)) // --to-command
944#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
945 , &excludes // --exclude
946#endif
947 , &verboseFlag // combined count for -t and -v
948 , &verboseFlag // combined count for -t and -v
949 );
950 //bb_error_msg("opt:%08x", opt);
951 argv += optind;
952
953 if (verboseFlag) tar_handle->action_header = header_verbose_list;
954 if (verboseFlag == 1) tar_handle->action_header = header_list;
955
956 if (opt & OPT_EXTRACT)
957 tar_handle->action_data = data_extract_all;
958
959 if (opt & OPT_2STDOUT)
960 tar_handle->action_data = data_extract_to_stdout;
961
962 if (opt & OPT_2COMMAND) {
963 putenv((char*)"TAR_FILETYPE=f");
964 signal(SIGPIPE, SIG_IGN);
965 tar_handle->action_data = data_extract_to_command;
966 IF_FEATURE_TAR_TO_COMMAND(tar_handle->tar__to_command_shell = xstrdup(get_shell_name());)
967 }
968
969 if (opt & OPT_KEEP_OLD)
970 tar_handle->ah_flags &= ~ARCHIVE_UNLINK_OLD;
971
972 if (opt & OPT_NUMERIC_OWNER)
973 tar_handle->ah_flags |= ARCHIVE_NUMERIC_OWNER;
974
975 if (opt & OPT_NOPRESERVE_OWNER)
976 tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_OWNER;
977
978 if (opt & OPT_NOPRESERVE_PERM)
979 tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_PERM;
980
981 if (opt & OPT_OVERWRITE) {
982 tar_handle->ah_flags &= ~ARCHIVE_UNLINK_OLD;
983 tar_handle->ah_flags |= ARCHIVE_O_TRUNC;
984 }
985
986 if (opt & OPT_NOPRESERVE_TIME)
987 tar_handle->ah_flags &= ~ARCHIVE_RESTORE_DATE;
988
989#if ENABLE_FEATURE_TAR_FROM
990 tar_handle->reject = append_file_list_to_list(tar_handle->reject);
991# if ENABLE_FEATURE_TAR_LONG_OPTIONS
992 /* Append excludes to reject */
993 while (excludes) {
994 llist_t *next = excludes->link;
995 excludes->link = tar_handle->reject;
996 tar_handle->reject = excludes;
997 excludes = next;
998 }
999# endif
1000 tar_handle->accept = append_file_list_to_list(tar_handle->accept);
1001#endif
1002
1003 /* Setup an array of filenames to work with */
1004 /* TODO: This is the same as in ar, make a separate function? */
1005 while (*argv) {
1006 /* kill trailing '/' unless the string is just "/" */
1007 char *cp = last_char_is(*argv, '/');
1008 if (cp > *argv)
1009 *cp = '\0';
1010 llist_add_to_end(&tar_handle->accept, *argv);
1011 argv++;
1012 }
1013
1014 if (tar_handle->accept || tar_handle->reject)
1015 tar_handle->filter = filter_accept_reject_list;
1016
1017 /* Open the tar file */
1018 {
1019 int tar_fd = STDIN_FILENO;
1020 int flags = O_RDONLY;
1021
1022 if (opt & OPT_CREATE) {
1023 /* Make sure there is at least one file to tar up */
1024 if (tar_handle->accept == NULL)
1025 bb_error_msg_and_die("empty archive");
1026
1027 tar_fd = STDOUT_FILENO;
1028 /* Mimicking GNU tar 1.15.1: */
1029 flags = O_WRONLY | O_CREAT | O_TRUNC;
1030 }
1031
1032 if (LONE_DASH(tar_filename)) {
1033 tar_handle->src_fd = tar_fd;
1034 tar_handle->seek = seek_by_read;
1035 } else {
1036 if (ENABLE_FEATURE_TAR_AUTODETECT
1037 && flags == O_RDONLY
1038 && !(opt & OPT_ANY_COMPRESS)
1039 ) {
1040 tar_handle->src_fd = open_zipped(tar_filename);
1041 if (tar_handle->src_fd < 0)
1042 bb_perror_msg_and_die("can't open '%s'", tar_filename);
1043 } else {
1044 tar_handle->src_fd = xopen(tar_filename, flags);
1045 }
1046 }
1047 }
1048
1049 if (base_dir)
1050 xchdir(base_dir);
1051
1052 //if (SEAMLESS_COMPRESSION || OPT_COMPRESS)
1053 // /* We need to know whether child (gzip/bzip/etc) exits abnormally */
1054 // signal(SIGCHLD, check_errors_in_children);
1055
1056 /* Create an archive */
1057 if (opt & OPT_CREATE) {
1058#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
1059 int zipMode = 0;
1060 if (ENABLE_FEATURE_SEAMLESS_GZ && (opt & OPT_GZIP))
1061 zipMode = 1;
1062 if (ENABLE_FEATURE_SEAMLESS_BZ2 && (opt & OPT_BZIP2))
1063 zipMode = 2;
1064#endif
1065 /* NB: writeTarFile() closes tar_handle->src_fd */
1066 return writeTarFile(tar_handle->src_fd, verboseFlag,
1067 (opt & OPT_DEREFERENCE ? ACTION_FOLLOWLINKS : 0)
1068 | (opt & OPT_NORECURSION ? 0 : ACTION_RECURSE),
1069 tar_handle->accept,
1070 tar_handle->reject, zipMode);
1071 }
1072
1073 if (opt & OPT_ANY_COMPRESS) {
1074 USE_FOR_MMU(IF_DESKTOP(long long) int FAST_FUNC (*xformer)(transformer_aux_data_t *aux, int src_fd, int dst_fd);)
1075 USE_FOR_NOMMU(const char *xformer_prog;)
1076
1077 if (opt & OPT_COMPRESS)
1078 USE_FOR_MMU(xformer = unpack_Z_stream;)
1079 USE_FOR_NOMMU(xformer_prog = "uncompress";)
1080 if (opt & OPT_GZIP)
1081 USE_FOR_MMU(xformer = unpack_gz_stream;)
1082 USE_FOR_NOMMU(xformer_prog = "gunzip";)
1083 if (opt & OPT_BZIP2)
1084 USE_FOR_MMU(xformer = unpack_bz2_stream;)
1085 USE_FOR_NOMMU(xformer_prog = "bunzip2";)
1086 if (opt & OPT_LZMA)
1087 USE_FOR_MMU(xformer = unpack_lzma_stream;)
1088 USE_FOR_NOMMU(xformer_prog = "unlzma";)
1089 if (opt & OPT_XZ)
1090 USE_FOR_MMU(xformer = unpack_xz_stream;)
1091 USE_FOR_NOMMU(xformer_prog = "unxz";)
1092
1093 open_transformer_with_sig(tar_handle->src_fd, xformer, xformer_prog);
1094 /* Can't lseek over pipes */
1095 tar_handle->seek = seek_by_read;
1096 /*tar_handle->offset = 0; - already is */
1097 }
1098
1099 while (get_header_tar(tar_handle) == EXIT_SUCCESS)
1100 continue;
1101
1102 /* Check that every file that should have been extracted was */
1103 while (tar_handle->accept) {
1104 if (!find_list_entry(tar_handle->reject, tar_handle->accept->data)
1105 && !find_list_entry(tar_handle->passed, tar_handle->accept->data)
1106 ) {
1107 bb_error_msg_and_die("%s: not found in archive",
1108 tar_handle->accept->data);
1109 }
1110 tar_handle->accept = tar_handle->accept->link;
1111 }
1112 if (ENABLE_FEATURE_CLEAN_UP /* && tar_handle->src_fd != STDIN_FILENO */)
1113 close(tar_handle->src_fd);
1114
1115 if (SEAMLESS_COMPRESSION || OPT_COMPRESS) {
1116 check_errors_in_children(0);
1117 return bb_got_signal;
1118 }
1119 return EXIT_SUCCESS;
1120}
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