2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "cpio_platform.h"
29 __FBSDID("$FreeBSD$");
31 #include <sys/types.h>
33 #include <archive_entry.h>
35 #ifdef HAVE_SYS_MKDEV_H
36 #include <sys/mkdev.h>
38 #ifdef HAVE_SYS_STAT_H
41 #ifdef HAVE_SYS_TIME_H
84 #include "line_reader.h"
85 #include "passphrase.h"
87 /* Fixed size of uname/gname caches. */
88 #define name_cache_size 101
101 } cache[name_cache_size];
104 static int extract_data(struct archive *, struct archive *);
105 const char * cpio_i64toa(int64_t);
106 static const char *cpio_rename(const char *name);
107 static int entry_to_archive(struct cpio *, struct archive_entry *);
108 static int file_to_archive(struct cpio *, const char *);
109 static void free_cache(struct name_cache *cache);
110 static void list_item_verbose(struct cpio *, struct archive_entry *);
111 static void long_help(void) __LA_DEAD;
112 static const char *lookup_gname(struct cpio *, gid_t gid);
113 static int lookup_gname_helper(struct cpio *,
114 const char **name, id_t gid);
115 static const char *lookup_uname(struct cpio *, uid_t uid);
116 static int lookup_uname_helper(struct cpio *,
117 const char **name, id_t uid);
118 static void mode_in(struct cpio *) __LA_DEAD;
119 static void mode_list(struct cpio *) __LA_DEAD;
120 static void mode_out(struct cpio *);
121 static void mode_pass(struct cpio *, const char *);
122 static const char *remove_leading_slash(const char *);
123 static int restore_time(struct cpio *, struct archive_entry *,
124 const char *, int fd);
125 static void usage(void) __LA_DEAD;
126 static void version(void) __LA_DEAD;
127 static const char * passphrase_callback(struct archive *, void *);
128 static void passphrase_free(char *);
131 main(int argc, char *argv[])
133 static char buff[16384];
134 struct cpio _cpio; /* Allocated on stack. */
142 memset(cpio, 0, sizeof(*cpio));
144 cpio->buff_size = sizeof(buff);
146 #if defined(HAVE_SIGACTION) && defined(SIGPIPE)
147 { /* Ignore SIGPIPE signals. */
149 sigemptyset(&sa.sa_mask);
151 sa.sa_handler = SIG_IGN;
152 sigaction(SIGPIPE, &sa, NULL);
156 /* Set lafe_progname before calling lafe_warnc. */
157 lafe_setprogname(*argv, "bsdcpio");
160 if (setlocale(LC_ALL, "") == NULL)
161 lafe_warnc(0, "Failed to set default locale");
164 cpio->uid_override = -1;
165 cpio->gid_override = -1;
170 cpio->compress = '\0';
171 cpio->extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR;
172 cpio->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
173 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS;
174 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT;
175 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS;
176 cpio->extract_flags |= ARCHIVE_EXTRACT_PERM;
177 cpio->extract_flags |= ARCHIVE_EXTRACT_FFLAGS;
178 cpio->extract_flags |= ARCHIVE_EXTRACT_ACL;
179 #if !defined(_WIN32) && !defined(__CYGWIN__)
181 cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
183 cpio->bytes_per_block = 512;
184 cpio->filename = NULL;
186 cpio->matching = archive_match_new();
187 if (cpio->matching == NULL)
188 lafe_errc(1, 0, "Out of memory");
190 while ((opt = cpio_getopt(cpio)) != -1) {
192 case '0': /* GNU convention: --null, -0 */
193 cpio->option_null = 1;
195 case 'A': /* NetBSD/OpenBSD */
196 cpio->option_append = 1;
198 case 'a': /* POSIX 1997 */
199 cpio->option_atime_restore = 1;
201 case 'B': /* POSIX 1997 */
202 cpio->bytes_per_block = 5120;
204 case OPTION_B64ENCODE:
205 cpio->add_filter = opt;
207 case 'C': /* NetBSD/OpenBSD */
210 t = (int)strtol(cpio->argument, &tptr, 10);
211 if (errno || t <= 0 || *(cpio->argument) == '\0' ||
212 tptr == NULL || *tptr != '\0') {
213 lafe_errc(1, 0, "Invalid blocksize: %s",
216 cpio->bytes_per_block = t;
218 case 'c': /* POSIX 1997 */
219 cpio->format = "odc";
221 case 'd': /* POSIX 1997 */
222 cpio->extract_flags &= ~ARCHIVE_EXTRACT_NO_AUTODIR;
224 case 'E': /* NetBSD/OpenBSD */
225 if (archive_match_include_pattern_from_file(
226 cpio->matching, cpio->argument,
227 cpio->option_null) != ARCHIVE_OK)
228 lafe_errc(1, 0, "Error : %s",
229 archive_error_string(cpio->matching));
231 case 'F': /* NetBSD/OpenBSD/GNU cpio */
232 cpio->filename = cpio->argument;
234 case 'f': /* POSIX 1997 */
235 if (archive_match_exclude_pattern(cpio->matching,
236 cpio->argument) != ARCHIVE_OK)
237 lafe_errc(1, 0, "Error : %s",
238 archive_error_string(cpio->matching));
241 cpio->compress = opt;
243 case 'H': /* GNU cpio (also --format) */
244 cpio->format = cpio->argument;
249 case 'I': /* NetBSD/OpenBSD */
250 cpio->filename = cpio->argument;
252 case 'i': /* POSIX 1997 */
253 if (cpio->mode != '\0')
255 "Cannot use both -i and -%c", cpio->mode);
258 case 'J': /* GNU tar, others */
259 cpio->compress = opt;
261 case 'j': /* GNU tar, others */
262 cpio->compress = opt;
264 case OPTION_INSECURE:
265 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_SYMLINKS;
266 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
267 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS;
269 case 'L': /* GNU cpio */
270 cpio->option_follow_links = 1;
272 case 'l': /* POSIX 1997 */
273 cpio->option_link = 1;
277 case OPTION_LZMA: /* GNU tar, others */
278 case OPTION_LZOP: /* GNU tar, others */
280 cpio->compress = opt;
282 case 'm': /* POSIX 1997 */
283 cpio->extract_flags |= ARCHIVE_EXTRACT_TIME;
285 case 'n': /* GNU cpio */
286 cpio->option_numeric_uid_gid = 1;
288 case OPTION_NO_PRESERVE_OWNER: /* GNU cpio */
289 cpio->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
291 case 'O': /* GNU cpio */
292 cpio->filename = cpio->argument;
294 case 'o': /* POSIX 1997 */
295 if (cpio->mode != '\0')
297 "Cannot use both -o and -%c", cpio->mode);
300 case 'p': /* POSIX 1997 */
301 if (cpio->mode != '\0')
303 "Cannot use both -p and -%c", cpio->mode);
305 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
306 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS;
308 case OPTION_PASSPHRASE:
309 cpio->passphrase = cpio->argument;
311 case OPTION_PRESERVE_OWNER:
312 cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
314 case OPTION_QUIET: /* GNU cpio */
317 case 'R': /* GNU cpio, also --owner */
318 /* TODO: owner_parse should return uname/gname
319 * also; use that to set [ug]name_override. */
320 errmsg = owner_parse(cpio->argument, &uid, &gid);
322 lafe_warnc(-1, "%s", errmsg);
326 cpio->uid_override = uid;
327 cpio->uname_override = NULL;
330 cpio->gid_override = gid;
331 cpio->gname_override = NULL;
334 case 'r': /* POSIX 1997 */
335 cpio->option_rename = 1;
337 case 't': /* POSIX 1997 */
338 cpio->option_list = 1;
340 case 'u': /* POSIX 1997 */
342 &= ~ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
344 case OPTION_UUENCODE:
345 cpio->add_filter = opt;
347 case 'v': /* POSIX 1997 */
350 case 'V': /* GNU cpio */
353 case OPTION_VERSION: /* GNU convention */
358 * cpio_getopt() handles -W specially, so it's not
361 case 'W': /* Obscure, but useful GNU convention. */
364 case 'y': /* tar convention */
365 cpio->compress = opt;
367 case 'Z': /* tar convention */
368 cpio->compress = opt;
370 case 'z': /* tar convention */
371 cpio->compress = opt;
379 * Sanity-check args, error out on nonsensical combinations.
381 /* -t implies -i if no mode was specified. */
382 if (cpio->option_list && cpio->mode == '\0')
385 if (cpio->option_list && cpio->mode != 'i')
386 lafe_errc(1, 0, "Option -t requires -i");
387 /* -n requires -it */
388 if (cpio->option_numeric_uid_gid && !cpio->option_list)
389 lafe_errc(1, 0, "Option -n requires -it");
390 /* Can only specify format when writing */
391 if (cpio->format != NULL && cpio->mode != 'o')
392 lafe_errc(1, 0, "Option --format requires -o");
394 if (cpio->option_link && cpio->mode != 'p')
395 lafe_errc(1, 0, "Option -l requires -p");
396 /* -v overrides -V */
397 if (cpio->dot && cpio->verbose)
399 /* TODO: Flag other nonsensical combinations. */
401 switch (cpio->mode) {
403 /* TODO: Implement old binary format in libarchive,
405 if (cpio->format == NULL)
406 cpio->format = "odc"; /* Default format */
411 while (*cpio->argv != NULL) {
412 if (archive_match_include_pattern(cpio->matching,
413 *cpio->argv) != ARCHIVE_OK)
414 lafe_errc(1, 0, "Error : %s",
415 archive_error_string(cpio->matching));
419 if (cpio->option_list)
425 if (*cpio->argv == NULL || **cpio->argv == '\0')
427 "-p mode requires a target directory");
428 mode_pass(cpio, *cpio->argv);
432 "Must specify at least one of -i, -o, or -p");
435 archive_match_free(cpio->matching);
436 free_cache(cpio->gname_cache);
437 free_cache(cpio->uname_cache);
439 passphrase_free(cpio->ppbuff);
440 return (cpio->return_value);
448 p = lafe_getprogname();
450 fprintf(stderr, "Brief Usage:\n");
451 fprintf(stderr, " List: %s -it < archive\n", p);
452 fprintf(stderr, " Extract: %s -i < archive\n", p);
453 fprintf(stderr, " Create: %s -o < filenames > archive\n", p);
454 fprintf(stderr, " Help: %s --help\n", p);
458 static const char *long_help_msg =
459 "First option must be a mode specifier:\n"
460 " -i Input -o Output -p Pass\n"
462 " -v Verbose filenames -V one dot per file\n"
463 "Create: %p -o [options] < [list of files] > [archive]\n"
464 " -J,-y,-z,--lzma Compress archive with xz/bzip2/gzip/lzma\n"
465 " --format {odc|newc|ustar} Select archive format\n"
466 "List: %p -it < [archive]\n"
467 "Extract: %p -i [options] < [archive]\n";
471 * Note that the word 'bsdcpio' will always appear in the first line
474 * In particular, /bin/sh scripts that need to test for the presence
475 * of bsdcpio can use the following template:
477 * if (cpio --help 2>&1 | grep bsdcpio >/dev/null 2>&1 ) then \
478 * echo bsdcpio; else echo not bsdcpio; fi
486 prog = lafe_getprogname();
490 p = (strcmp(prog,"bsdcpio") != 0) ? "(bsdcpio)" : "";
491 printf("%s%s: manipulate archive files\n", prog, p);
493 for (p = long_help_msg; *p != '\0'; p++) {
509 fprintf(stdout,"bsdcpio %s - %s \n",
510 BSDCPIO_VERSION_STRING,
511 archive_version_details());
516 mode_out(struct cpio *cpio)
518 struct archive_entry *entry, *spare;
519 struct lafe_line_reader *lr;
523 if (cpio->option_append)
524 lafe_errc(1, 0, "Append mode not yet supported.");
526 cpio->archive_read_disk = archive_read_disk_new();
527 if (cpio->archive_read_disk == NULL)
528 lafe_errc(1, 0, "Failed to allocate archive object");
529 if (cpio->option_follow_links)
530 archive_read_disk_set_symlink_logical(cpio->archive_read_disk);
532 archive_read_disk_set_symlink_physical(cpio->archive_read_disk);
533 archive_read_disk_set_standard_lookup(cpio->archive_read_disk);
535 cpio->archive = archive_write_new();
536 if (cpio->archive == NULL)
537 lafe_errc(1, 0, "Failed to allocate archive object");
538 switch (cpio->compress) {
540 r = archive_write_add_filter_grzip(cpio->archive);
543 r = archive_write_add_filter_xz(cpio->archive);
546 r = archive_write_add_filter_lrzip(cpio->archive);
549 r = archive_write_add_filter_lz4(cpio->archive);
552 r = archive_write_add_filter_lzma(cpio->archive);
555 r = archive_write_add_filter_lzop(cpio->archive);
558 r = archive_write_add_filter_zstd(cpio->archive);
561 r = archive_write_add_filter_bzip2(cpio->archive);
564 r = archive_write_add_filter_gzip(cpio->archive);
567 r = archive_write_add_filter_compress(cpio->archive);
570 r = archive_write_add_filter_none(cpio->archive);
573 if (r < ARCHIVE_WARN)
574 lafe_errc(1, 0, "Requested compression not available");
575 switch (cpio->add_filter) {
579 case OPTION_B64ENCODE:
580 r = archive_write_add_filter_b64encode(cpio->archive);
582 case OPTION_UUENCODE:
583 r = archive_write_add_filter_uuencode(cpio->archive);
586 if (r < ARCHIVE_WARN)
587 lafe_errc(1, 0, "Requested filter not available");
588 r = archive_write_set_format_by_name(cpio->archive, cpio->format);
590 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
591 archive_write_set_bytes_per_block(cpio->archive, cpio->bytes_per_block);
592 cpio->linkresolver = archive_entry_linkresolver_new();
593 archive_entry_linkresolver_set_strategy(cpio->linkresolver,
594 archive_format(cpio->archive));
595 if (cpio->passphrase != NULL)
596 r = archive_write_set_passphrase(cpio->archive,
599 r = archive_write_set_passphrase_callback(cpio->archive, cpio,
600 &passphrase_callback);
602 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
605 * The main loop: Copy each file into the output archive.
607 r = archive_write_open_filename(cpio->archive, cpio->filename);
609 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
610 lr = lafe_line_reader("-", cpio->option_null);
611 while ((p = lafe_line_reader_next(lr)) != NULL)
612 file_to_archive(cpio, p);
613 lafe_line_reader_free(lr);
616 * The hardlink detection may have queued up a couple of entries
617 * that can now be flushed.
620 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
621 while (entry != NULL) {
622 entry_to_archive(cpio, entry);
623 archive_entry_free(entry);
625 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
628 r = archive_write_close(cpio->archive);
630 fprintf(stderr, "\n");
632 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
636 (archive_filter_bytes(cpio->archive, 0) + 511)
638 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
639 blocks == 1 ? "block" : "blocks");
641 archive_write_free(cpio->archive);
642 archive_entry_linkresolver_free(cpio->linkresolver);
646 remove_leading_slash(const char *p)
650 /* Remove leading "//./" or "//?/" or "//?/UNC/"
651 * (absolute path prefixes used by Windows API) */
652 if ((p[0] == '/' || p[0] == '\\') &&
653 (p[1] == '/' || p[1] == '\\') &&
654 (p[2] == '.' || p[2] == '?') &&
655 (p[3] == '/' || p[3] == '\\'))
658 (p[4] == 'U' || p[4] == 'u') &&
659 (p[5] == 'N' || p[5] == 'n') &&
660 (p[6] == 'C' || p[6] == 'c') &&
661 (p[7] == '/' || p[7] == '\\'))
668 /* Remove leading drive letter from archives created
670 if (((p[0] >= 'a' && p[0] <= 'z') ||
671 (p[0] >= 'A' && p[0] <= 'Z')) &&
675 /* Remove leading "/../", "//", etc. */
676 while (p[0] == '/' || p[0] == '\\') {
677 if (p[1] == '.' && p[2] == '.' &&
678 (p[3] == '/' || p[3] == '\\')) {
679 p += 3; /* Remove "/..", leave "/"
682 p += 1; /* Remove "/". */
689 * This is used by both out mode (to copy objects from disk into
690 * an archive) and pass mode (to copy objects from disk to
691 * an archive_write_disk "archive").
694 file_to_archive(struct cpio *cpio, const char *srcpath)
696 const char *destpath;
697 struct archive_entry *entry, *spare;
702 * Create an archive_entry describing the source file.
705 entry = archive_entry_new();
707 lafe_errc(1, 0, "Couldn't allocate entry");
708 archive_entry_copy_sourcepath(entry, srcpath);
709 r = archive_read_disk_entry_from_file(cpio->archive_read_disk,
711 if (r < ARCHIVE_FAILED)
712 lafe_errc(1, 0, "%s",
713 archive_error_string(cpio->archive_read_disk));
716 archive_error_string(cpio->archive_read_disk));
717 if (r <= ARCHIVE_FAILED) {
718 archive_entry_free(entry);
719 cpio->return_value = 1;
723 if (cpio->uid_override >= 0) {
724 archive_entry_set_uid(entry, cpio->uid_override);
725 archive_entry_set_uname(entry, cpio->uname_override);
727 if (cpio->gid_override >= 0) {
728 archive_entry_set_gid(entry, cpio->gid_override);
729 archive_entry_set_gname(entry, cpio->gname_override);
733 * Generate a destination path for this entry.
734 * "destination path" is the name to which it will be copied in
735 * pass mode or the name that will go into the archive in
740 len = cpio->destdir_len + strlen(srcpath) + 8;
741 if (len >= cpio->pass_destpath_alloc) {
742 while (len >= cpio->pass_destpath_alloc) {
743 cpio->pass_destpath_alloc += 512;
744 cpio->pass_destpath_alloc *= 2;
746 free(cpio->pass_destpath);
747 cpio->pass_destpath = malloc(cpio->pass_destpath_alloc);
748 if (cpio->pass_destpath == NULL)
750 "Can't allocate path buffer");
752 strcpy(cpio->pass_destpath, cpio->destdir);
753 strcat(cpio->pass_destpath, remove_leading_slash(srcpath));
754 destpath = cpio->pass_destpath;
756 if (cpio->option_rename)
757 destpath = cpio_rename(destpath);
758 if (destpath == NULL) {
759 archive_entry_free(entry);
762 archive_entry_copy_pathname(entry, destpath);
765 * If we're trying to preserve hardlinks, match them here.
768 if (cpio->linkresolver != NULL
769 && archive_entry_filetype(entry) != AE_IFDIR) {
770 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
774 r = entry_to_archive(cpio, entry);
775 archive_entry_free(entry);
778 r = entry_to_archive(cpio, spare);
779 archive_entry_free(spare);
786 entry_to_archive(struct cpio *cpio, struct archive_entry *entry)
788 const char *destpath = archive_entry_pathname(entry);
789 const char *srcpath = archive_entry_sourcepath(entry);
794 /* Print out the destination name to the user. */
796 fprintf(stderr,"%s", destpath);
798 fprintf(stderr, ".");
801 * Option_link only makes sense in pass mode and for
802 * regular files. Also note: if a link operation fails
803 * because of cross-device restrictions, we'll fall back
804 * to copy mode for that entry.
806 * TODO: Test other cpio implementations to see if they
807 * hard-link anything other than regular files here.
809 if (cpio->option_link
810 && archive_entry_filetype(entry) == AE_IFREG)
812 struct archive_entry *t;
813 /* Save the original entry in case we need it later. */
814 t = archive_entry_clone(entry);
816 lafe_errc(1, ENOMEM, "Can't create link");
817 /* Note: link(2) doesn't create parent directories,
818 * so we use archive_write_header() instead as a
820 archive_entry_set_hardlink(t, srcpath);
821 /* This is a straight link that carries no data. */
822 archive_entry_set_size(t, 0);
823 r = archive_write_header(cpio->archive, t);
824 archive_entry_free(t);
826 lafe_warnc(archive_errno(cpio->archive),
827 "%s", archive_error_string(cpio->archive));
828 if (r == ARCHIVE_FATAL)
831 if (r != ARCHIVE_OK && archive_errno(cpio->archive) == EXDEV) {
832 /* Cross-device link: Just fall through and use
833 * the original entry to copy the file over. */
834 lafe_warnc(0, "Copying file instead");
841 * Make sure we can open the file (if necessary) before
842 * trying to write the header.
844 if (archive_entry_filetype(entry) == AE_IFREG) {
845 if (archive_entry_size(entry) > 0) {
846 fd = open(srcpath, O_RDONLY | O_BINARY);
849 "%s: could not open file", srcpath);
854 archive_entry_set_size(entry, 0);
857 r = archive_write_header(cpio->archive, entry);
860 lafe_warnc(archive_errno(cpio->archive),
863 archive_error_string(cpio->archive));
865 if (r == ARCHIVE_FATAL)
868 if (r >= ARCHIVE_WARN && archive_entry_size(entry) > 0 && fd >= 0) {
869 bytes_read = read(fd, cpio->buff, (unsigned)cpio->buff_size);
870 while (bytes_read > 0) {
872 bytes_write = archive_write_data(cpio->archive,
873 cpio->buff, bytes_read);
875 lafe_errc(1, archive_errno(cpio->archive),
876 "%s", archive_error_string(cpio->archive));
877 if (bytes_write < bytes_read) {
879 "Truncated write; file may have "
880 "grown while being archived.");
882 bytes_read = read(fd, cpio->buff,
883 (unsigned)cpio->buff_size);
887 fd = restore_time(cpio, entry, srcpath, fd);
891 fprintf(stderr,"\n");
898 restore_time(struct cpio *cpio, struct archive_entry *entry,
899 const char *name, int fd)
902 static int warned = 0;
904 (void)cpio; /* UNUSED */
905 (void)entry; /* UNUSED */
906 (void)name; /* UNUSED */
909 lafe_warnc(0, "Can't restore access times on this platform");
913 #if defined(_WIN32) && !defined(__CYGWIN__)
914 struct __timeval times[2];
916 struct timeval times[2];
919 if (!cpio->option_atime_restore)
922 times[1].tv_sec = archive_entry_mtime(entry);
923 times[1].tv_usec = archive_entry_mtime_nsec(entry) / 1000;
925 times[0].tv_sec = archive_entry_atime(entry);
926 times[0].tv_usec = archive_entry_atime_nsec(entry) / 1000;
928 #if defined(HAVE_FUTIMES) && !defined(__CYGWIN__)
929 if (fd >= 0 && futimes(fd, times) == 0)
933 * Some platform cannot restore access times if the file descriptor
942 if (lutimes(name, times) != 0)
944 if ((AE_IFLNK != archive_entry_filetype(entry))
945 && utimes(name, times) != 0)
947 lafe_warnc(errno, "Can't update time for %s", name);
954 mode_in(struct cpio *cpio)
957 struct archive_entry *entry;
959 const char *destpath;
962 ext = archive_write_disk_new();
964 lafe_errc(1, 0, "Couldn't allocate restore object");
965 r = archive_write_disk_set_options(ext, cpio->extract_flags);
967 lafe_errc(1, 0, "%s", archive_error_string(ext));
968 a = archive_read_new();
970 lafe_errc(1, 0, "Couldn't allocate archive object");
971 archive_read_support_filter_all(a);
972 archive_read_support_format_all(a);
973 if (cpio->passphrase != NULL)
974 r = archive_read_add_passphrase(a, cpio->passphrase);
976 r = archive_read_set_passphrase_callback(a, cpio,
977 &passphrase_callback);
979 lafe_errc(1, 0, "%s", archive_error_string(a));
981 if (archive_read_open_filename(a, cpio->filename,
982 cpio->bytes_per_block))
983 lafe_errc(1, archive_errno(a),
984 "%s", archive_error_string(a));
986 r = archive_read_next_header(a, &entry);
987 if (r == ARCHIVE_EOF)
989 if (r != ARCHIVE_OK) {
990 lafe_errc(1, archive_errno(a),
991 "%s", archive_error_string(a));
993 if (archive_match_path_excluded(cpio->matching, entry))
995 if (cpio->option_rename) {
996 destpath = cpio_rename(archive_entry_pathname(entry));
997 archive_entry_set_pathname(entry, destpath);
999 destpath = archive_entry_pathname(entry);
1000 if (destpath == NULL)
1003 fprintf(stderr, "%s\n", destpath);
1005 fprintf(stderr, ".");
1006 if (cpio->uid_override >= 0)
1007 archive_entry_set_uid(entry, cpio->uid_override);
1008 if (cpio->gid_override >= 0)
1009 archive_entry_set_gid(entry, cpio->gid_override);
1010 r = archive_write_header(ext, entry);
1011 if (r != ARCHIVE_OK) {
1012 fprintf(stderr, "%s: %s\n",
1013 archive_entry_pathname(entry),
1014 archive_error_string(ext));
1015 } else if (!archive_entry_size_is_set(entry)
1016 || archive_entry_size(entry) > 0) {
1017 r = extract_data(a, ext);
1018 if (r != ARCHIVE_OK)
1019 cpio->return_value = 1;
1022 r = archive_read_close(a);
1024 fprintf(stderr, "\n");
1025 if (r != ARCHIVE_OK)
1026 lafe_errc(1, 0, "%s", archive_error_string(a));
1027 r = archive_write_close(ext);
1028 if (r != ARCHIVE_OK)
1029 lafe_errc(1, 0, "%s", archive_error_string(ext));
1031 int64_t blocks = (archive_filter_bytes(a, 0) + 511)
1033 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1034 blocks == 1 ? "block" : "blocks");
1036 archive_read_free(a);
1037 archive_write_free(ext);
1038 exit(cpio->return_value);
1042 * Exits if there's a fatal error. Returns ARCHIVE_OK
1043 * if everything is kosher.
1046 extract_data(struct archive *ar, struct archive *aw)
1054 r = archive_read_data_block(ar, &block, &size, &offset);
1055 if (r == ARCHIVE_EOF)
1056 return (ARCHIVE_OK);
1057 if (r != ARCHIVE_OK) {
1058 lafe_warnc(archive_errno(ar),
1059 "%s", archive_error_string(ar));
1062 r = (int)archive_write_data_block(aw, block, size, offset);
1063 if (r != ARCHIVE_OK) {
1064 lafe_warnc(archive_errno(aw),
1065 "%s", archive_error_string(aw));
1072 mode_list(struct cpio *cpio)
1075 struct archive_entry *entry;
1078 a = archive_read_new();
1080 lafe_errc(1, 0, "Couldn't allocate archive object");
1081 archive_read_support_filter_all(a);
1082 archive_read_support_format_all(a);
1083 if (cpio->passphrase != NULL)
1084 r = archive_read_add_passphrase(a, cpio->passphrase);
1086 r = archive_read_set_passphrase_callback(a, cpio,
1087 &passphrase_callback);
1088 if (r != ARCHIVE_OK)
1089 lafe_errc(1, 0, "%s", archive_error_string(a));
1091 if (archive_read_open_filename(a, cpio->filename,
1092 cpio->bytes_per_block))
1093 lafe_errc(1, archive_errno(a),
1094 "%s", archive_error_string(a));
1096 r = archive_read_next_header(a, &entry);
1097 if (r == ARCHIVE_EOF)
1099 if (r != ARCHIVE_OK) {
1100 lafe_errc(1, archive_errno(a),
1101 "%s", archive_error_string(a));
1103 if (archive_match_path_excluded(cpio->matching, entry))
1106 list_item_verbose(cpio, entry);
1108 fprintf(stdout, "%s\n", archive_entry_pathname(entry));
1110 r = archive_read_close(a);
1111 if (r != ARCHIVE_OK)
1112 lafe_errc(1, 0, "%s", archive_error_string(a));
1114 int64_t blocks = (archive_filter_bytes(a, 0) + 511)
1116 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1117 blocks == 1 ? "block" : "blocks");
1119 archive_read_free(a);
1124 * Display information about the current file.
1126 * The format here roughly duplicates the output of 'ls -l'.
1127 * This is based on SUSv2, where 'tar tv' is documented as
1128 * listing additional information in an "unspecified format,"
1129 * and 'pax -l' is documented as using the same format as 'ls -l'.
1132 list_item_verbose(struct cpio *cpio, struct archive_entry *entry)
1136 char uids[16], gids[16];
1137 const char *uname, *gname;
1143 #if defined(HAVE_LOCALTIME_R) || defined(HAVE__LOCALTIME64_S)
1146 #if defined(HAVE__LOCALTIME64_S)
1154 if (cpio->option_numeric_uid_gid) {
1155 /* Format numeric uid/gid for display. */
1156 strcpy(uids, cpio_i64toa(archive_entry_uid(entry)));
1158 strcpy(gids, cpio_i64toa(archive_entry_gid(entry)));
1161 /* Use uname if it's present, else lookup name from uid. */
1162 uname = archive_entry_uname(entry);
1164 uname = lookup_uname(cpio, (uid_t)archive_entry_uid(entry));
1165 /* Use gname if it's present, else lookup name from gid. */
1166 gname = archive_entry_gname(entry);
1168 gname = lookup_gname(cpio, (uid_t)archive_entry_gid(entry));
1171 /* Print device number or file size. */
1172 if (archive_entry_filetype(entry) == AE_IFCHR
1173 || archive_entry_filetype(entry) == AE_IFBLK) {
1174 snprintf(size, sizeof(size), "%lu,%lu",
1175 (unsigned long)archive_entry_rdevmajor(entry),
1176 (unsigned long)archive_entry_rdevminor(entry));
1178 strcpy(size, cpio_i64toa(archive_entry_size(entry)));
1181 /* Format the time using 'ls -l' conventions. */
1182 mtime = archive_entry_mtime(entry);
1183 #if defined(_WIN32) && !defined(__CYGWIN__)
1184 /* Windows' strftime function does not support %e format. */
1185 if (mtime - now > 365*86400/2
1186 || mtime - now < -365*86400/2)
1187 fmt = cpio->day_first ? "%d %b %Y" : "%b %d %Y";
1189 fmt = cpio->day_first ? "%d %b %H:%M" : "%b %d %H:%M";
1191 if (mtime - now > 365*86400/2
1192 || mtime - now < -365*86400/2)
1193 fmt = cpio->day_first ? "%e %b %Y" : "%b %e %Y";
1195 fmt = cpio->day_first ? "%e %b %H:%M" : "%b %e %H:%M";
1197 #if defined(HAVE_LOCALTIME_R)
1198 ltime = localtime_r(&mtime, &tmbuf);
1199 #elif defined(HAVE__LOCALTIME64_S)
1201 terr = _localtime64_s(&tmbuf, &tmptime);
1207 ltime = localtime(&mtime);
1209 strftime(date, sizeof(date), fmt, ltime);
1211 fprintf(out, "%s%3d %-8s %-8s %8s %12s %s",
1212 archive_entry_strmode(entry),
1213 archive_entry_nlink(entry),
1214 uname, gname, size, date,
1215 archive_entry_pathname(entry));
1217 /* Extra information for links. */
1218 if (archive_entry_hardlink(entry)) /* Hard link */
1219 fprintf(out, " link to %s", archive_entry_hardlink(entry));
1220 else if (archive_entry_symlink(entry)) /* Symbolic link */
1221 fprintf(out, " -> %s", archive_entry_symlink(entry));
1226 mode_pass(struct cpio *cpio, const char *destdir)
1228 struct lafe_line_reader *lr;
1232 /* Ensure target dir has a trailing '/' to simplify path surgery. */
1233 cpio->destdir_len = strlen(destdir);
1234 cpio->destdir = malloc(cpio->destdir_len + 8);
1235 memcpy(cpio->destdir, destdir, cpio->destdir_len);
1236 if (cpio->destdir_len == 0 || destdir[cpio->destdir_len - 1] != '/')
1237 cpio->destdir[cpio->destdir_len++] = '/';
1238 cpio->destdir[cpio->destdir_len] = '\0';
1240 cpio->archive = archive_write_disk_new();
1241 if (cpio->archive == NULL)
1242 lafe_errc(1, 0, "Failed to allocate archive object");
1243 r = archive_write_disk_set_options(cpio->archive, cpio->extract_flags);
1244 if (r != ARCHIVE_OK)
1245 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
1246 cpio->linkresolver = archive_entry_linkresolver_new();
1247 archive_write_disk_set_standard_lookup(cpio->archive);
1249 cpio->archive_read_disk = archive_read_disk_new();
1250 if (cpio->archive_read_disk == NULL)
1251 lafe_errc(1, 0, "Failed to allocate archive object");
1252 if (cpio->option_follow_links)
1253 archive_read_disk_set_symlink_logical(cpio->archive_read_disk);
1255 archive_read_disk_set_symlink_physical(cpio->archive_read_disk);
1256 archive_read_disk_set_standard_lookup(cpio->archive_read_disk);
1258 lr = lafe_line_reader("-", cpio->option_null);
1259 while ((p = lafe_line_reader_next(lr)) != NULL)
1260 file_to_archive(cpio, p);
1261 lafe_line_reader_free(lr);
1263 archive_entry_linkresolver_free(cpio->linkresolver);
1264 r = archive_write_close(cpio->archive);
1266 fprintf(stderr, "\n");
1267 if (r != ARCHIVE_OK)
1268 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
1272 (archive_filter_bytes(cpio->archive, 0) + 511)
1274 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1275 blocks == 1 ? "block" : "blocks");
1278 archive_write_free(cpio->archive);
1279 free(cpio->pass_destpath);
1283 * Prompt for a new name for this entry. Returns a pointer to the
1284 * new name or NULL if the entry should not be copied. This
1285 * implements the semantics defined in POSIX.1-1996, which specifies
1286 * that an input of '.' means the name should be unchanged. GNU cpio
1287 * treats '.' as a literal new name.
1290 cpio_rename(const char *name)
1292 static char buff[1024];
1295 #if defined(_WIN32) && !defined(__CYGWIN__)
1298 t = fopen("CONIN$", "r");
1301 to = fopen("CONOUT$", "w");
1306 fprintf(to, "%s (Enter/./(new name))? ", name);
1309 t = fopen("/dev/tty", "r+");
1312 fprintf(t, "%s (Enter/./(new name))? ", name);
1316 p = fgets(buff, sizeof(buff), t);
1319 /* End-of-file is a blank line. */
1322 while (*p == ' ' || *p == '\t')
1324 if (*p == '\n' || *p == '\0')
1327 if (*p == '.' && p[1] == '\n')
1328 /* Single period preserves original name. */
1331 /* Trim the final newline. */
1332 while (*p != '\0' && *p != '\n')
1334 /* Overwrite the final \n with a null character. */
1340 free_cache(struct name_cache *cache)
1344 if (cache != NULL) {
1345 for (i = 0; i < cache->size; i++)
1346 free(cache->cache[i].name);
1352 * Lookup uname/gname from uid/gid, return NULL if no match.
1355 lookup_name(struct cpio *cpio, struct name_cache **name_cache_variable,
1356 int (*lookup_fn)(struct cpio *, const char **, id_t), id_t id)
1359 struct name_cache *cache;
1364 if (*name_cache_variable == NULL) {
1365 *name_cache_variable = calloc(1, sizeof(struct name_cache));
1366 if (*name_cache_variable == NULL)
1367 lafe_errc(1, ENOMEM, "No more memory");
1368 (*name_cache_variable)->size = name_cache_size;
1371 cache = *name_cache_variable;
1374 slot = id % cache->size;
1375 if (cache->cache[slot].name != NULL) {
1376 if (cache->cache[slot].id == id) {
1378 return (cache->cache[slot].name);
1380 free(cache->cache[slot].name);
1381 cache->cache[slot].name = NULL;
1384 if (lookup_fn(cpio, &name, id)) {
1385 /* If lookup failed, format it as a number. */
1386 snprintf(asnum, sizeof(asnum), "%u", (unsigned)id);
1390 cache->cache[slot].name = strdup(name);
1391 if (cache->cache[slot].name != NULL) {
1392 cache->cache[slot].id = id;
1393 return (cache->cache[slot].name);
1397 * Conveniently, NULL marks an empty slot, so
1398 * if the strdup() fails, we've just failed to
1399 * cache it. No recovery necessary.
1405 lookup_uname(struct cpio *cpio, uid_t uid)
1407 return (lookup_name(cpio, &cpio->uname_cache,
1408 &lookup_uname_helper, (id_t)uid));
1412 lookup_uname_helper(struct cpio *cpio, const char **name, id_t id)
1414 struct passwd *pwent;
1416 (void)cpio; /* UNUSED */
1419 pwent = getpwuid((uid_t)id);
1420 if (pwent == NULL) {
1421 if (errno && errno != ENOENT)
1422 lafe_warnc(errno, "getpwuid(%s) failed",
1423 cpio_i64toa((int64_t)id));
1427 *name = pwent->pw_name;
1432 lookup_gname(struct cpio *cpio, gid_t gid)
1434 return (lookup_name(cpio, &cpio->gname_cache,
1435 &lookup_gname_helper, (id_t)gid));
1439 lookup_gname_helper(struct cpio *cpio, const char **name, id_t id)
1441 struct group *grent;
1443 (void)cpio; /* UNUSED */
1446 grent = getgrgid((gid_t)id);
1447 if (grent == NULL) {
1448 if (errno && errno != ENOENT)
1449 lafe_warnc(errno, "getgrgid(%s) failed",
1450 cpio_i64toa((int64_t)id));
1454 *name = grent->gr_name;
1459 * It would be nice to just use printf() for formatting large numbers,
1460 * but the compatibility problems are a big headache. Hence the
1461 * following simple utility function.
1464 cpio_i64toa(int64_t n0)
1466 /* 2^64 =~ 1.8 * 10^19, so 20 decimal digits suffice.
1467 * We also need 1 byte for '-' and 1 for '\0'.
1469 static char buff[22];
1470 int64_t n = n0 < 0 ? -n0 : n0;
1471 char *p = buff + sizeof(buff);
1475 *--p = '0' + (int)(n % 10);
1483 #define PPBUFF_SIZE 1024
1485 passphrase_callback(struct archive *a, void *_client_data)
1487 struct cpio *cpio = (struct cpio *)_client_data;
1488 (void)a; /* UNUSED */
1490 if (cpio->ppbuff == NULL) {
1491 cpio->ppbuff = malloc(PPBUFF_SIZE);
1492 if (cpio->ppbuff == NULL)
1493 lafe_errc(1, errno, "Out of memory");
1495 return lafe_readpassphrase("Enter passphrase:",
1496 cpio->ppbuff, PPBUFF_SIZE);
1500 passphrase_free(char *ppbuff)
1502 if (ppbuff != NULL) {
1503 memset(ppbuff, 0, PPBUFF_SIZE);