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
72 #ifdef HAVE_SYS_TIME_H
81 #include "line_reader.h"
84 /* Fixed size of uname/gname caches. */
85 #define name_cache_size 101
98 } cache[name_cache_size];
101 static int extract_data(struct archive *, struct archive *);
102 const char * cpio_i64toa(int64_t);
103 static const char *cpio_rename(const char *name);
104 static int entry_to_archive(struct cpio *, struct archive_entry *);
105 static int file_to_archive(struct cpio *, const char *);
106 static void free_cache(struct name_cache *cache);
107 static void list_item_verbose(struct cpio *, struct archive_entry *);
108 static void long_help(void);
109 static const char *lookup_gname(struct cpio *, gid_t gid);
110 static int lookup_gname_helper(struct cpio *,
111 const char **name, id_t gid);
112 static const char *lookup_uname(struct cpio *, uid_t uid);
113 static int lookup_uname_helper(struct cpio *,
114 const char **name, id_t uid);
115 static void mode_in(struct cpio *);
116 static void mode_list(struct cpio *);
117 static void mode_out(struct cpio *);
118 static void mode_pass(struct cpio *, const char *);
119 static int restore_time(struct cpio *, struct archive_entry *,
120 const char *, int fd);
121 static void usage(void);
122 static void version(void);
125 main(int argc, char *argv[])
127 static char buff[16384];
128 struct cpio _cpio; /* Allocated on stack. */
135 memset(cpio, 0, sizeof(*cpio));
137 cpio->buff_size = sizeof(buff);
139 /* Need lafe_progname before calling lafe_warnc. */
141 lafe_progname = "bsdcpio";
143 #if defined(_WIN32) && !defined(__CYGWIN__)
144 lafe_progname = strrchr(*argv, '\\');
146 lafe_progname = strrchr(*argv, '/');
148 if (lafe_progname != NULL)
151 lafe_progname = *argv;
154 cpio->uid_override = -1;
155 cpio->gid_override = -1;
160 cpio->compress = '\0';
161 cpio->extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR;
162 cpio->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
163 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS;
164 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT;
165 cpio->extract_flags |= ARCHIVE_EXTRACT_PERM;
166 cpio->extract_flags |= ARCHIVE_EXTRACT_FFLAGS;
167 cpio->extract_flags |= ARCHIVE_EXTRACT_ACL;
168 #if !defined(_WIN32) && !defined(__CYGWIN__)
170 cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
172 cpio->bytes_per_block = 512;
173 cpio->filename = NULL;
175 while ((opt = cpio_getopt(cpio)) != -1) {
177 case '0': /* GNU convention: --null, -0 */
178 cpio->option_null = 1;
180 case 'A': /* NetBSD/OpenBSD */
181 cpio->option_append = 1;
183 case 'a': /* POSIX 1997 */
184 cpio->option_atime_restore = 1;
186 case 'B': /* POSIX 1997 */
187 cpio->bytes_per_block = 5120;
189 case 'C': /* NetBSD/OpenBSD */
190 cpio->bytes_per_block = atoi(cpio->optarg);
191 if (cpio->bytes_per_block <= 0)
192 lafe_errc(1, 0, "Invalid blocksize %s", cpio->optarg);
194 case 'c': /* POSIX 1997 */
195 cpio->format = "odc";
197 case 'd': /* POSIX 1997 */
198 cpio->extract_flags &= ~ARCHIVE_EXTRACT_NO_AUTODIR;
200 case 'E': /* NetBSD/OpenBSD */
201 lafe_include_from_file(&cpio->matching,
202 cpio->optarg, cpio->option_null);
204 case 'F': /* NetBSD/OpenBSD/GNU cpio */
205 cpio->filename = cpio->optarg;
207 case 'f': /* POSIX 1997 */
208 lafe_exclude(&cpio->matching, cpio->optarg);
210 case 'H': /* GNU cpio (also --format) */
211 cpio->format = cpio->optarg;
216 case 'I': /* NetBSD/OpenBSD */
217 cpio->filename = cpio->optarg;
219 case 'i': /* POSIX 1997 */
220 if (cpio->mode != '\0')
222 "Cannot use both -i and -%c", cpio->mode);
225 case 'J': /* GNU tar, others */
226 cpio->compress = opt;
228 case 'j': /* GNU tar, others */
229 cpio->compress = opt;
231 case OPTION_INSECURE:
232 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_SYMLINKS;
233 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
235 case 'L': /* GNU cpio */
236 cpio->option_follow_links = 1;
238 case 'l': /* POSIX 1997 */
239 cpio->option_link = 1;
241 case OPTION_LZMA: /* GNU tar, others */
242 cpio->compress = opt;
244 case 'm': /* POSIX 1997 */
245 cpio->extract_flags |= ARCHIVE_EXTRACT_TIME;
247 case 'n': /* GNU cpio */
248 cpio->option_numeric_uid_gid = 1;
250 case OPTION_NO_PRESERVE_OWNER: /* GNU cpio */
251 cpio->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
253 case 'O': /* GNU cpio */
254 cpio->filename = cpio->optarg;
256 case 'o': /* POSIX 1997 */
257 if (cpio->mode != '\0')
259 "Cannot use both -o and -%c", cpio->mode);
262 case 'p': /* POSIX 1997 */
263 if (cpio->mode != '\0')
265 "Cannot use both -p and -%c", cpio->mode);
267 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
269 case OPTION_PRESERVE_OWNER:
270 cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
272 case OPTION_QUIET: /* GNU cpio */
275 case 'R': /* GNU cpio, also --owner */
276 /* TODO: owner_parse should return uname/gname
277 * also; use that to set [ug]name_override. */
278 errmsg = owner_parse(cpio->optarg, &uid, &gid);
280 lafe_warnc(-1, "%s", errmsg);
284 cpio->uid_override = uid;
285 cpio->uname_override = NULL;
288 cpio->gid_override = gid;
289 cpio->gname_override = NULL;
292 case 'r': /* POSIX 1997 */
293 cpio->option_rename = 1;
295 case 't': /* POSIX 1997 */
296 cpio->option_list = 1;
298 case 'u': /* POSIX 1997 */
300 &= ~ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
302 case 'v': /* POSIX 1997 */
305 case OPTION_VERSION: /* GNU convention */
310 * cpio_getopt() handles -W specially, so it's not
313 case 'W': /* Obscure, but useful GNU convention. */
316 case 'y': /* tar convention */
317 cpio->compress = opt;
319 case 'Z': /* tar convention */
320 cpio->compress = opt;
322 case 'z': /* tar convention */
323 cpio->compress = opt;
331 * Sanity-check args, error out on nonsensical combinations.
333 /* -t implies -i if no mode was specified. */
334 if (cpio->option_list && cpio->mode == '\0')
337 if (cpio->option_list && cpio->mode != 'i')
338 lafe_errc(1, 0, "Option -t requires -i");
339 /* -n requires -it */
340 if (cpio->option_numeric_uid_gid && !cpio->option_list)
341 lafe_errc(1, 0, "Option -n requires -it");
342 /* Can only specify format when writing */
343 if (cpio->format != NULL && cpio->mode != 'o')
344 lafe_errc(1, 0, "Option --format requires -o");
346 if (cpio->option_link && cpio->mode != 'p')
347 lafe_errc(1, 0, "Option -l requires -p");
348 /* TODO: Flag other nonsensical combinations. */
350 switch (cpio->mode) {
352 /* TODO: Implement old binary format in libarchive,
354 if (cpio->format == NULL)
355 cpio->format = "odc"; /* Default format */
360 while (*cpio->argv != NULL) {
361 lafe_include(&cpio->matching, *cpio->argv);
365 if (cpio->option_list)
371 if (*cpio->argv == NULL || **cpio->argv == '\0')
373 "-p mode requires a target directory");
374 mode_pass(cpio, *cpio->argv);
378 "Must specify at least one of -i, -o, or -p");
381 free_cache(cpio->gname_cache);
382 free_cache(cpio->uname_cache);
383 return (cpio->return_value);
393 fprintf(stderr, "Brief Usage:\n");
394 fprintf(stderr, " List: %s -it < archive\n", p);
395 fprintf(stderr, " Extract: %s -i < archive\n", p);
396 fprintf(stderr, " Create: %s -o < filenames > archive\n", p);
397 fprintf(stderr, " Help: %s --help\n", p);
401 static const char *long_help_msg =
402 "First option must be a mode specifier:\n"
403 " -i Input -o Output -p Pass\n"
406 "Create: %p -o [options] < [list of files] > [archive]\n"
407 " -J,-y,-z,--lzma Compress archive with xz/bzip2/gzip/lzma\n"
408 " --format {odc|newc|ustar} Select archive format\n"
409 "List: %p -it < [archive]\n"
410 "Extract: %p -i [options] < [archive]\n";
414 * Note that the word 'bsdcpio' will always appear in the first line
417 * In particular, /bin/sh scripts that need to test for the presence
418 * of bsdcpio can use the following template:
420 * if (cpio --help 2>&1 | grep bsdcpio >/dev/null 2>&1 ) then \
421 * echo bsdcpio; else echo not bsdcpio; fi
429 prog = lafe_progname;
433 p = (strcmp(prog,"bsdcpio") != 0) ? "(bsdcpio)" : "";
434 printf("%s%s: manipulate archive files\n", prog, p);
436 for (p = long_help_msg; *p != '\0'; p++) {
452 fprintf(stdout,"bsdcpio %s -- %s\n",
453 BSDCPIO_VERSION_STRING,
459 mode_out(struct cpio *cpio)
461 struct archive_entry *entry, *spare;
462 struct lafe_line_reader *lr;
466 if (cpio->option_append)
467 lafe_errc(1, 0, "Append mode not yet supported.");
469 cpio->archive_read_disk = archive_read_disk_new();
470 if (cpio->archive_read_disk == NULL)
471 lafe_errc(1, 0, "Failed to allocate archive object");
472 if (cpio->option_follow_links)
473 archive_read_disk_set_symlink_logical(cpio->archive_read_disk);
475 archive_read_disk_set_symlink_physical(cpio->archive_read_disk);
476 archive_read_disk_set_standard_lookup(cpio->archive_read_disk);
478 cpio->archive = archive_write_new();
479 if (cpio->archive == NULL)
480 lafe_errc(1, 0, "Failed to allocate archive object");
481 switch (cpio->compress) {
483 r = archive_write_set_compression_xz(cpio->archive);
486 r = archive_write_set_compression_lzma(cpio->archive);
489 r = archive_write_set_compression_bzip2(cpio->archive);
492 r = archive_write_set_compression_gzip(cpio->archive);
495 r = archive_write_set_compression_compress(cpio->archive);
498 r = archive_write_set_compression_none(cpio->archive);
501 if (r < ARCHIVE_WARN)
502 lafe_errc(1, 0, "Requested compression not available");
503 r = archive_write_set_format_by_name(cpio->archive, cpio->format);
505 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
506 archive_write_set_bytes_per_block(cpio->archive, cpio->bytes_per_block);
507 cpio->linkresolver = archive_entry_linkresolver_new();
508 archive_entry_linkresolver_set_strategy(cpio->linkresolver,
509 archive_format(cpio->archive));
512 * The main loop: Copy each file into the output archive.
514 r = archive_write_open_file(cpio->archive, cpio->filename);
516 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
517 lr = lafe_line_reader("-", cpio->option_null);
518 while ((p = lafe_line_reader_next(lr)) != NULL)
519 file_to_archive(cpio, p);
520 lafe_line_reader_free(lr);
523 * The hardlink detection may have queued up a couple of entries
524 * that can now be flushed.
527 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
528 while (entry != NULL) {
529 entry_to_archive(cpio, entry);
530 archive_entry_free(entry);
532 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
535 r = archive_write_close(cpio->archive);
537 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
541 (archive_position_uncompressed(cpio->archive) + 511)
543 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
544 blocks == 1 ? "block" : "blocks");
546 archive_write_finish(cpio->archive);
550 * This is used by both out mode (to copy objects from disk into
551 * an archive) and pass mode (to copy objects from disk to
552 * an archive_write_disk "archive").
555 file_to_archive(struct cpio *cpio, const char *srcpath)
557 const char *destpath;
558 struct archive_entry *entry, *spare;
564 * Create an archive_entry describing the source file.
567 entry = archive_entry_new();
569 lafe_errc(1, 0, "Couldn't allocate entry");
570 archive_entry_copy_sourcepath(entry, srcpath);
571 r = archive_read_disk_entry_from_file(cpio->archive_read_disk,
573 if (r < ARCHIVE_FAILED)
574 lafe_errc(1, 0, "%s",
575 archive_error_string(cpio->archive_read_disk));
578 archive_error_string(cpio->archive_read_disk));
579 if (r <= ARCHIVE_FAILED) {
580 cpio->return_value = 1;
584 if (cpio->uid_override >= 0) {
585 archive_entry_set_uid(entry, cpio->uid_override);
586 archive_entry_set_uname(entry, cpio->uname_override);
588 if (cpio->gid_override >= 0) {
589 archive_entry_set_gid(entry, cpio->gid_override);
590 archive_entry_set_gname(entry, cpio->gname_override);
594 * Generate a destination path for this entry.
595 * "destination path" is the name to which it will be copied in
596 * pass mode or the name that will go into the archive in
601 len = strlen(cpio->destdir) + strlen(srcpath) + 8;
602 if (len >= cpio->pass_destpath_alloc) {
603 while (len >= cpio->pass_destpath_alloc) {
604 cpio->pass_destpath_alloc += 512;
605 cpio->pass_destpath_alloc *= 2;
607 free(cpio->pass_destpath);
608 cpio->pass_destpath = malloc(cpio->pass_destpath_alloc);
609 if (cpio->pass_destpath == NULL)
611 "Can't allocate path buffer");
613 strcpy(cpio->pass_destpath, cpio->destdir);
617 strcat(cpio->pass_destpath, p);
618 destpath = cpio->pass_destpath;
620 if (cpio->option_rename)
621 destpath = cpio_rename(destpath);
622 if (destpath == NULL)
624 archive_entry_copy_pathname(entry, destpath);
627 * If we're trying to preserve hardlinks, match them here.
630 if (cpio->linkresolver != NULL
631 && archive_entry_filetype(entry) != AE_IFDIR) {
632 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
636 r = entry_to_archive(cpio, entry);
637 archive_entry_free(entry);
640 r = entry_to_archive(cpio, spare);
641 archive_entry_free(spare);
648 entry_to_archive(struct cpio *cpio, struct archive_entry *entry)
650 const char *destpath = archive_entry_pathname(entry);
651 const char *srcpath = archive_entry_sourcepath(entry);
656 /* Print out the destination name to the user. */
658 fprintf(stderr,"%s", destpath);
661 * Option_link only makes sense in pass mode and for
662 * regular files. Also note: if a link operation fails
663 * because of cross-device restrictions, we'll fall back
664 * to copy mode for that entry.
666 * TODO: Test other cpio implementations to see if they
667 * hard-link anything other than regular files here.
669 if (cpio->option_link
670 && archive_entry_filetype(entry) == AE_IFREG)
672 struct archive_entry *t;
673 /* Save the original entry in case we need it later. */
674 t = archive_entry_clone(entry);
676 lafe_errc(1, ENOMEM, "Can't create link");
677 /* Note: link(2) doesn't create parent directories,
678 * so we use archive_write_header() instead as a
680 archive_entry_set_hardlink(t, srcpath);
681 /* This is a straight link that carries no data. */
682 archive_entry_set_size(t, 0);
683 r = archive_write_header(cpio->archive, t);
684 archive_entry_free(t);
686 lafe_warnc(archive_errno(cpio->archive),
687 "%s", archive_error_string(cpio->archive));
688 if (r == ARCHIVE_FATAL)
691 if (r != ARCHIVE_OK && archive_errno(cpio->archive) == EXDEV) {
692 /* Cross-device link: Just fall through and use
693 * the original entry to copy the file over. */
694 lafe_warnc(0, "Copying file instead");
701 * Make sure we can open the file (if necessary) before
702 * trying to write the header.
704 if (archive_entry_filetype(entry) == AE_IFREG) {
705 if (archive_entry_size(entry) > 0) {
706 fd = open(srcpath, O_RDONLY | O_BINARY);
709 "%s: could not open file", srcpath);
714 archive_entry_set_size(entry, 0);
717 r = archive_write_header(cpio->archive, entry);
720 lafe_warnc(archive_errno(cpio->archive),
723 archive_error_string(cpio->archive));
725 if (r == ARCHIVE_FATAL)
728 if (r >= ARCHIVE_WARN && fd >= 0) {
729 bytes_read = read(fd, cpio->buff, cpio->buff_size);
730 while (bytes_read > 0) {
731 r = archive_write_data(cpio->archive,
732 cpio->buff, bytes_read);
734 lafe_errc(1, archive_errno(cpio->archive),
735 "%s", archive_error_string(cpio->archive));
736 if (r < bytes_read) {
738 "Truncated write; file may have grown while being archived.");
740 bytes_read = read(fd, cpio->buff, cpio->buff_size);
744 fd = restore_time(cpio, entry, srcpath, fd);
748 fprintf(stderr,"\n");
755 restore_time(struct cpio *cpio, struct archive_entry *entry,
756 const char *name, int fd)
759 static int warned = 0;
761 (void)cpio; /* UNUSED */
762 (void)entry; /* UNUSED */
763 (void)name; /* UNUSED */
766 lafe_warnc(0, "Can't restore access times on this platform");
770 #if defined(_WIN32) && !defined(__CYGWIN__)
771 struct __timeval times[2];
773 struct timeval times[2];
776 if (!cpio->option_atime_restore)
779 times[1].tv_sec = archive_entry_mtime(entry);
780 times[1].tv_usec = archive_entry_mtime_nsec(entry) / 1000;
782 times[0].tv_sec = archive_entry_atime(entry);
783 times[0].tv_usec = archive_entry_atime_nsec(entry) / 1000;
785 #if defined(HAVE_FUTIMES) && !defined(__CYGWIN__)
786 if (fd >= 0 && futimes(fd, times) == 0)
790 * Some platform cannot restore access times if the file descriptor
799 if (lutimes(name, times) != 0)
801 if ((AE_IFLNK != archive_entry_filetype(entry))
802 && utimes(name, times) != 0)
804 lafe_warnc(errno, "Can't update time for %s", name);
811 mode_in(struct cpio *cpio)
814 struct archive_entry *entry;
816 const char *destpath;
819 ext = archive_write_disk_new();
821 lafe_errc(1, 0, "Couldn't allocate restore object");
822 r = archive_write_disk_set_options(ext, cpio->extract_flags);
824 lafe_errc(1, 0, "%s", archive_error_string(ext));
825 a = archive_read_new();
827 lafe_errc(1, 0, "Couldn't allocate archive object");
828 archive_read_support_compression_all(a);
829 archive_read_support_format_all(a);
831 if (archive_read_open_file(a, cpio->filename, cpio->bytes_per_block))
832 lafe_errc(1, archive_errno(a),
833 "%s", archive_error_string(a));
835 r = archive_read_next_header(a, &entry);
836 if (r == ARCHIVE_EOF)
838 if (r != ARCHIVE_OK) {
839 lafe_errc(1, archive_errno(a),
840 "%s", archive_error_string(a));
842 if (lafe_excluded(cpio->matching, archive_entry_pathname(entry)))
844 if (cpio->option_rename) {
845 destpath = cpio_rename(archive_entry_pathname(entry));
846 archive_entry_set_pathname(entry, destpath);
848 destpath = archive_entry_pathname(entry);
849 if (destpath == NULL)
852 fprintf(stdout, "%s\n", destpath);
853 if (cpio->uid_override >= 0)
854 archive_entry_set_uid(entry, cpio->uid_override);
855 if (cpio->gid_override >= 0)
856 archive_entry_set_gid(entry, cpio->gid_override);
857 r = archive_write_header(ext, entry);
858 if (r != ARCHIVE_OK) {
859 fprintf(stderr, "%s: %s\n",
860 archive_entry_pathname(entry),
861 archive_error_string(ext));
862 } else if (archive_entry_size(entry) > 0) {
863 r = extract_data(a, ext);
865 cpio->return_value = 1;
868 r = archive_read_close(a);
870 lafe_errc(1, 0, "%s", archive_error_string(a));
871 r = archive_write_close(ext);
873 lafe_errc(1, 0, "%s", archive_error_string(ext));
875 int64_t blocks = (archive_position_uncompressed(a) + 511)
877 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
878 blocks == 1 ? "block" : "blocks");
880 archive_read_finish(a);
881 archive_write_finish(ext);
882 exit(cpio->return_value);
886 * Exits if there's a fatal error. Returns ARCHIVE_OK
887 * if everything is kosher.
890 extract_data(struct archive *ar, struct archive *aw)
898 r = archive_read_data_block(ar, &block, &size, &offset);
899 if (r == ARCHIVE_EOF)
901 if (r != ARCHIVE_OK) {
902 lafe_warnc(archive_errno(ar),
903 "%s", archive_error_string(ar));
906 r = archive_write_data_block(aw, block, size, offset);
907 if (r != ARCHIVE_OK) {
908 lafe_warnc(archive_errno(aw),
909 "%s", archive_error_string(aw));
916 mode_list(struct cpio *cpio)
919 struct archive_entry *entry;
922 a = archive_read_new();
924 lafe_errc(1, 0, "Couldn't allocate archive object");
925 archive_read_support_compression_all(a);
926 archive_read_support_format_all(a);
928 if (archive_read_open_file(a, cpio->filename, cpio->bytes_per_block))
929 lafe_errc(1, archive_errno(a),
930 "%s", archive_error_string(a));
932 r = archive_read_next_header(a, &entry);
933 if (r == ARCHIVE_EOF)
935 if (r != ARCHIVE_OK) {
936 lafe_errc(1, archive_errno(a),
937 "%s", archive_error_string(a));
939 if (lafe_excluded(cpio->matching, archive_entry_pathname(entry)))
942 list_item_verbose(cpio, entry);
944 fprintf(stdout, "%s\n", archive_entry_pathname(entry));
946 r = archive_read_close(a);
948 lafe_errc(1, 0, "%s", archive_error_string(a));
950 int64_t blocks = (archive_position_uncompressed(a) + 511)
952 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
953 blocks == 1 ? "block" : "blocks");
955 archive_read_finish(a);
960 * Display information about the current file.
962 * The format here roughly duplicates the output of 'ls -l'.
963 * This is based on SUSv2, where 'tar tv' is documented as
964 * listing additional information in an "unspecified format,"
965 * and 'pax -l' is documented as using the same format as 'ls -l'.
968 list_item_verbose(struct cpio *cpio, struct archive_entry *entry)
972 char uids[16], gids[16];
973 const char *uname, *gname;
982 if (cpio->option_numeric_uid_gid) {
983 /* Format numeric uid/gid for display. */
984 strcpy(uids, cpio_i64toa(archive_entry_uid(entry)));
986 strcpy(gids, cpio_i64toa(archive_entry_gid(entry)));
989 /* Use uname if it's present, else lookup name from uid. */
990 uname = archive_entry_uname(entry);
992 uname = lookup_uname(cpio, archive_entry_uid(entry));
993 /* Use gname if it's present, else lookup name from gid. */
994 gname = archive_entry_gname(entry);
996 gname = lookup_gname(cpio, archive_entry_gid(entry));
999 /* Print device number or file size. */
1000 if (archive_entry_filetype(entry) == AE_IFCHR
1001 || archive_entry_filetype(entry) == AE_IFBLK) {
1002 snprintf(size, sizeof(size), "%lu,%lu",
1003 (unsigned long)archive_entry_rdevmajor(entry),
1004 (unsigned long)archive_entry_rdevminor(entry));
1006 strcpy(size, cpio_i64toa(archive_entry_size(entry)));
1009 /* Format the time using 'ls -l' conventions. */
1010 mtime = archive_entry_mtime(entry);
1011 #if defined(_WIN32) && !defined(__CYGWIN__)
1012 /* Windows' strftime function does not support %e format. */
1013 if (mtime - now > 365*86400/2
1014 || mtime - now < -365*86400/2)
1015 fmt = cpio->day_first ? "%d %b %Y" : "%b %d %Y";
1017 fmt = cpio->day_first ? "%d %b %H:%M" : "%b %d %H:%M";
1019 if (abs(mtime - now) > (365/2)*86400)
1020 fmt = cpio->day_first ? "%e %b %Y" : "%b %e %Y";
1022 fmt = cpio->day_first ? "%e %b %H:%M" : "%b %e %H:%M";
1024 strftime(date, sizeof(date), fmt, localtime(&mtime));
1026 fprintf(out, "%s%3d %-8s %-8s %8s %12s %s",
1027 archive_entry_strmode(entry),
1028 archive_entry_nlink(entry),
1029 uname, gname, size, date,
1030 archive_entry_pathname(entry));
1032 /* Extra information for links. */
1033 if (archive_entry_hardlink(entry)) /* Hard link */
1034 fprintf(out, " link to %s", archive_entry_hardlink(entry));
1035 else if (archive_entry_symlink(entry)) /* Symbolic link */
1036 fprintf(out, " -> %s", archive_entry_symlink(entry));
1041 mode_pass(struct cpio *cpio, const char *destdir)
1043 struct lafe_line_reader *lr;
1047 /* Ensure target dir has a trailing '/' to simplify path surgery. */
1048 cpio->destdir = malloc(strlen(destdir) + 8);
1049 strcpy(cpio->destdir, destdir);
1050 if (destdir[strlen(destdir) - 1] != '/')
1051 strcat(cpio->destdir, "/");
1053 cpio->archive = archive_write_disk_new();
1054 if (cpio->archive == NULL)
1055 lafe_errc(1, 0, "Failed to allocate archive object");
1056 r = archive_write_disk_set_options(cpio->archive, cpio->extract_flags);
1057 if (r != ARCHIVE_OK)
1058 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
1059 cpio->linkresolver = archive_entry_linkresolver_new();
1060 archive_write_disk_set_standard_lookup(cpio->archive);
1062 cpio->archive_read_disk = archive_read_disk_new();
1063 if (cpio->archive_read_disk == NULL)
1064 lafe_errc(1, 0, "Failed to allocate archive object");
1065 if (cpio->option_follow_links)
1066 archive_read_disk_set_symlink_logical(cpio->archive_read_disk);
1068 archive_read_disk_set_symlink_physical(cpio->archive_read_disk);
1069 archive_read_disk_set_standard_lookup(cpio->archive_read_disk);
1071 lr = lafe_line_reader("-", cpio->option_null);
1072 while ((p = lafe_line_reader_next(lr)) != NULL)
1073 file_to_archive(cpio, p);
1074 lafe_line_reader_free(lr);
1076 archive_entry_linkresolver_free(cpio->linkresolver);
1077 r = archive_write_close(cpio->archive);
1078 if (r != ARCHIVE_OK)
1079 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
1083 (archive_position_uncompressed(cpio->archive) + 511)
1085 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1086 blocks == 1 ? "block" : "blocks");
1089 archive_write_finish(cpio->archive);
1093 * Prompt for a new name for this entry. Returns a pointer to the
1094 * new name or NULL if the entry should not be copied. This
1095 * implements the semantics defined in POSIX.1-1996, which specifies
1096 * that an input of '.' means the name should be unchanged. GNU cpio
1097 * treats '.' as a literal new name.
1100 cpio_rename(const char *name)
1102 static char buff[1024];
1106 t = fopen("/dev/tty", "r+");
1109 fprintf(t, "%s (Enter/./(new name))? ", name);
1112 p = fgets(buff, sizeof(buff), t);
1115 /* End-of-file is a blank line. */
1118 while (*p == ' ' || *p == '\t')
1120 if (*p == '\n' || *p == '\0')
1123 if (*p == '.' && p[1] == '\n')
1124 /* Single period preserves original name. */
1127 /* Trim the final newline. */
1128 while (*p != '\0' && *p != '\n')
1130 /* Overwrite the final \n with a null character. */
1136 free_cache(struct name_cache *cache)
1140 if (cache != NULL) {
1141 for (i = 0; i < cache->size; i++)
1142 free(cache->cache[i].name);
1148 * Lookup uname/gname from uid/gid, return NULL if no match.
1151 lookup_name(struct cpio *cpio, struct name_cache **name_cache_variable,
1152 int (*lookup_fn)(struct cpio *, const char **, id_t), id_t id)
1155 struct name_cache *cache;
1160 if (*name_cache_variable == NULL) {
1161 *name_cache_variable = malloc(sizeof(struct name_cache));
1162 if (*name_cache_variable == NULL)
1163 lafe_errc(1, ENOMEM, "No more memory");
1164 memset(*name_cache_variable, 0, sizeof(struct name_cache));
1165 (*name_cache_variable)->size = name_cache_size;
1168 cache = *name_cache_variable;
1171 slot = id % cache->size;
1172 if (cache->cache[slot].name != NULL) {
1173 if (cache->cache[slot].id == id) {
1175 return (cache->cache[slot].name);
1177 free(cache->cache[slot].name);
1178 cache->cache[slot].name = NULL;
1181 if (lookup_fn(cpio, &name, id) == 0) {
1182 if (name == NULL || name[0] == '\0') {
1183 /* If lookup failed, format it as a number. */
1184 snprintf(asnum, sizeof(asnum), "%u", (unsigned)id);
1187 cache->cache[slot].name = strdup(name);
1188 if (cache->cache[slot].name != NULL) {
1189 cache->cache[slot].id = id;
1190 return (cache->cache[slot].name);
1193 * Conveniently, NULL marks an empty slot, so
1194 * if the strdup() fails, we've just failed to
1195 * cache it. No recovery necessary.
1202 lookup_uname(struct cpio *cpio, uid_t uid)
1204 return (lookup_name(cpio, &cpio->uname_cache,
1205 &lookup_uname_helper, (id_t)uid));
1209 lookup_uname_helper(struct cpio *cpio, const char **name, id_t id)
1211 struct passwd *pwent;
1213 (void)cpio; /* UNUSED */
1216 pwent = getpwuid((uid_t)id);
1217 if (pwent == NULL) {
1219 if (errno != 0 && errno != ENOENT)
1220 lafe_warnc(errno, "getpwuid(%d) failed", id);
1224 *name = pwent->pw_name;
1229 lookup_gname(struct cpio *cpio, gid_t gid)
1231 return (lookup_name(cpio, &cpio->gname_cache,
1232 &lookup_gname_helper, (id_t)gid));
1236 lookup_gname_helper(struct cpio *cpio, const char **name, id_t id)
1238 struct group *grent;
1240 (void)cpio; /* UNUSED */
1243 grent = getgrgid((gid_t)id);
1244 if (grent == NULL) {
1247 lafe_warnc(errno, "getgrgid(%d) failed", id);
1251 *name = grent->gr_name;
1256 * It would be nice to just use printf() for formatting large numbers,
1257 * but the compatibility problems are a big headache. Hence the
1258 * following simple utility function.
1261 cpio_i64toa(int64_t n0)
1263 // 2^64 =~ 1.8 * 10^19, so 20 decimal digits suffice.
1264 // We also need 1 byte for '-' and 1 for '\0'.
1265 static char buff[22];
1266 int64_t n = n0 < 0 ? -n0 : n0;
1267 char *p = buff + sizeof(buff);
1271 *--p = '0' + (int)(n % 10);