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. */
141 memset(cpio, 0, sizeof(*cpio));
143 cpio->buff_size = sizeof(buff);
145 #if defined(HAVE_SIGACTION) && defined(SIGPIPE)
146 { /* Ignore SIGPIPE signals. */
148 sigemptyset(&sa.sa_mask);
150 sa.sa_handler = SIG_IGN;
151 sigaction(SIGPIPE, &sa, NULL);
155 /* Set lafe_progname before calling lafe_warnc. */
156 lafe_setprogname(*argv, "bsdcpio");
159 if (setlocale(LC_ALL, "") == NULL)
160 lafe_warnc(0, "Failed to set default locale");
163 cpio->uid_override = -1;
164 cpio->gid_override = -1;
169 cpio->compress = '\0';
170 cpio->extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR;
171 cpio->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
172 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS;
173 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT;
174 cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS;
175 cpio->extract_flags |= ARCHIVE_EXTRACT_PERM;
176 cpio->extract_flags |= ARCHIVE_EXTRACT_FFLAGS;
177 cpio->extract_flags |= ARCHIVE_EXTRACT_ACL;
178 #if !defined(_WIN32) && !defined(__CYGWIN__)
180 cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
182 cpio->bytes_per_block = 512;
183 cpio->filename = NULL;
185 cpio->matching = archive_match_new();
186 if (cpio->matching == NULL)
187 lafe_errc(1, 0, "Out of memory");
189 while ((opt = cpio_getopt(cpio)) != -1) {
191 case '0': /* GNU convention: --null, -0 */
192 cpio->option_null = 1;
194 case 'A': /* NetBSD/OpenBSD */
195 cpio->option_append = 1;
197 case 'a': /* POSIX 1997 */
198 cpio->option_atime_restore = 1;
200 case 'B': /* POSIX 1997 */
201 cpio->bytes_per_block = 5120;
203 case OPTION_B64ENCODE:
204 cpio->add_filter = opt;
206 case 'C': /* NetBSD/OpenBSD */
207 cpio->bytes_per_block = atoi(cpio->argument);
208 if (cpio->bytes_per_block <= 0)
209 lafe_errc(1, 0, "Invalid blocksize %s", cpio->argument);
211 case 'c': /* POSIX 1997 */
212 cpio->format = "odc";
214 case 'd': /* POSIX 1997 */
215 cpio->extract_flags &= ~ARCHIVE_EXTRACT_NO_AUTODIR;
217 case 'E': /* NetBSD/OpenBSD */
218 if (archive_match_include_pattern_from_file(
219 cpio->matching, cpio->argument,
220 cpio->option_null) != ARCHIVE_OK)
221 lafe_errc(1, 0, "Error : %s",
222 archive_error_string(cpio->matching));
224 case 'F': /* NetBSD/OpenBSD/GNU cpio */
225 cpio->filename = cpio->argument;
227 case 'f': /* POSIX 1997 */
228 if (archive_match_exclude_pattern(cpio->matching,
229 cpio->argument) != ARCHIVE_OK)
230 lafe_errc(1, 0, "Error : %s",
231 archive_error_string(cpio->matching));
234 cpio->compress = opt;
236 case 'H': /* GNU cpio (also --format) */
237 cpio->format = cpio->argument;
242 case 'I': /* NetBSD/OpenBSD */
243 cpio->filename = cpio->argument;
245 case 'i': /* POSIX 1997 */
246 if (cpio->mode != '\0')
248 "Cannot use both -i and -%c", cpio->mode);
251 case 'J': /* GNU tar, others */
252 cpio->compress = opt;
254 case 'j': /* GNU tar, others */
255 cpio->compress = opt;
257 case OPTION_INSECURE:
258 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_SYMLINKS;
259 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
260 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS;
262 case 'L': /* GNU cpio */
263 cpio->option_follow_links = 1;
265 case 'l': /* POSIX 1997 */
266 cpio->option_link = 1;
270 case OPTION_LZMA: /* GNU tar, others */
271 case OPTION_LZOP: /* GNU tar, others */
273 cpio->compress = opt;
275 case 'm': /* POSIX 1997 */
276 cpio->extract_flags |= ARCHIVE_EXTRACT_TIME;
278 case 'n': /* GNU cpio */
279 cpio->option_numeric_uid_gid = 1;
281 case OPTION_NO_PRESERVE_OWNER: /* GNU cpio */
282 cpio->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
284 case 'O': /* GNU cpio */
285 cpio->filename = cpio->argument;
287 case 'o': /* POSIX 1997 */
288 if (cpio->mode != '\0')
290 "Cannot use both -o and -%c", cpio->mode);
293 case 'p': /* POSIX 1997 */
294 if (cpio->mode != '\0')
296 "Cannot use both -p and -%c", cpio->mode);
298 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
299 cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS;
301 case OPTION_PASSPHRASE:
302 cpio->passphrase = cpio->argument;
304 case OPTION_PRESERVE_OWNER:
305 cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
307 case OPTION_QUIET: /* GNU cpio */
310 case 'R': /* GNU cpio, also --owner */
311 /* TODO: owner_parse should return uname/gname
312 * also; use that to set [ug]name_override. */
313 errmsg = owner_parse(cpio->argument, &uid, &gid);
315 lafe_warnc(-1, "%s", errmsg);
319 cpio->uid_override = uid;
320 cpio->uname_override = NULL;
323 cpio->gid_override = gid;
324 cpio->gname_override = NULL;
327 case 'r': /* POSIX 1997 */
328 cpio->option_rename = 1;
330 case 't': /* POSIX 1997 */
331 cpio->option_list = 1;
333 case 'u': /* POSIX 1997 */
335 &= ~ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
337 case OPTION_UUENCODE:
338 cpio->add_filter = opt;
340 case 'v': /* POSIX 1997 */
343 case 'V': /* GNU cpio */
346 case OPTION_VERSION: /* GNU convention */
351 * cpio_getopt() handles -W specially, so it's not
354 case 'W': /* Obscure, but useful GNU convention. */
357 case 'y': /* tar convention */
358 cpio->compress = opt;
360 case 'Z': /* tar convention */
361 cpio->compress = opt;
363 case 'z': /* tar convention */
364 cpio->compress = opt;
372 * Sanity-check args, error out on nonsensical combinations.
374 /* -t implies -i if no mode was specified. */
375 if (cpio->option_list && cpio->mode == '\0')
378 if (cpio->option_list && cpio->mode != 'i')
379 lafe_errc(1, 0, "Option -t requires -i");
380 /* -n requires -it */
381 if (cpio->option_numeric_uid_gid && !cpio->option_list)
382 lafe_errc(1, 0, "Option -n requires -it");
383 /* Can only specify format when writing */
384 if (cpio->format != NULL && cpio->mode != 'o')
385 lafe_errc(1, 0, "Option --format requires -o");
387 if (cpio->option_link && cpio->mode != 'p')
388 lafe_errc(1, 0, "Option -l requires -p");
389 /* -v overrides -V */
390 if (cpio->dot && cpio->verbose)
392 /* TODO: Flag other nonsensical combinations. */
394 switch (cpio->mode) {
396 /* TODO: Implement old binary format in libarchive,
398 if (cpio->format == NULL)
399 cpio->format = "odc"; /* Default format */
404 while (*cpio->argv != NULL) {
405 if (archive_match_include_pattern(cpio->matching,
406 *cpio->argv) != ARCHIVE_OK)
407 lafe_errc(1, 0, "Error : %s",
408 archive_error_string(cpio->matching));
412 if (cpio->option_list)
418 if (*cpio->argv == NULL || **cpio->argv == '\0')
420 "-p mode requires a target directory");
421 mode_pass(cpio, *cpio->argv);
425 "Must specify at least one of -i, -o, or -p");
428 archive_match_free(cpio->matching);
429 free_cache(cpio->gname_cache);
430 free_cache(cpio->uname_cache);
432 passphrase_free(cpio->ppbuff);
433 return (cpio->return_value);
441 p = lafe_getprogname();
443 fprintf(stderr, "Brief Usage:\n");
444 fprintf(stderr, " List: %s -it < archive\n", p);
445 fprintf(stderr, " Extract: %s -i < archive\n", p);
446 fprintf(stderr, " Create: %s -o < filenames > archive\n", p);
447 fprintf(stderr, " Help: %s --help\n", p);
451 static const char *long_help_msg =
452 "First option must be a mode specifier:\n"
453 " -i Input -o Output -p Pass\n"
455 " -v Verbose filenames -V one dot per file\n"
456 "Create: %p -o [options] < [list of files] > [archive]\n"
457 " -J,-y,-z,--lzma Compress archive with xz/bzip2/gzip/lzma\n"
458 " --format {odc|newc|ustar} Select archive format\n"
459 "List: %p -it < [archive]\n"
460 "Extract: %p -i [options] < [archive]\n";
464 * Note that the word 'bsdcpio' will always appear in the first line
467 * In particular, /bin/sh scripts that need to test for the presence
468 * of bsdcpio can use the following template:
470 * if (cpio --help 2>&1 | grep bsdcpio >/dev/null 2>&1 ) then \
471 * echo bsdcpio; else echo not bsdcpio; fi
479 prog = lafe_getprogname();
483 p = (strcmp(prog,"bsdcpio") != 0) ? "(bsdcpio)" : "";
484 printf("%s%s: manipulate archive files\n", prog, p);
486 for (p = long_help_msg; *p != '\0'; p++) {
502 fprintf(stdout,"bsdcpio %s - %s\n",
503 BSDCPIO_VERSION_STRING,
504 archive_version_details());
509 mode_out(struct cpio *cpio)
511 struct archive_entry *entry, *spare;
512 struct lafe_line_reader *lr;
516 if (cpio->option_append)
517 lafe_errc(1, 0, "Append mode not yet supported.");
519 cpio->archive_read_disk = archive_read_disk_new();
520 if (cpio->archive_read_disk == NULL)
521 lafe_errc(1, 0, "Failed to allocate archive object");
522 if (cpio->option_follow_links)
523 archive_read_disk_set_symlink_logical(cpio->archive_read_disk);
525 archive_read_disk_set_symlink_physical(cpio->archive_read_disk);
526 archive_read_disk_set_standard_lookup(cpio->archive_read_disk);
528 cpio->archive = archive_write_new();
529 if (cpio->archive == NULL)
530 lafe_errc(1, 0, "Failed to allocate archive object");
531 switch (cpio->compress) {
533 r = archive_write_add_filter_grzip(cpio->archive);
536 r = archive_write_add_filter_xz(cpio->archive);
539 r = archive_write_add_filter_lrzip(cpio->archive);
542 r = archive_write_add_filter_lz4(cpio->archive);
545 r = archive_write_add_filter_lzma(cpio->archive);
548 r = archive_write_add_filter_lzop(cpio->archive);
551 r = archive_write_add_filter_zstd(cpio->archive);
554 r = archive_write_add_filter_bzip2(cpio->archive);
557 r = archive_write_add_filter_gzip(cpio->archive);
560 r = archive_write_add_filter_compress(cpio->archive);
563 r = archive_write_add_filter_none(cpio->archive);
566 if (r < ARCHIVE_WARN)
567 lafe_errc(1, 0, "Requested compression not available");
568 switch (cpio->add_filter) {
572 case OPTION_B64ENCODE:
573 r = archive_write_add_filter_b64encode(cpio->archive);
575 case OPTION_UUENCODE:
576 r = archive_write_add_filter_uuencode(cpio->archive);
579 if (r < ARCHIVE_WARN)
580 lafe_errc(1, 0, "Requested filter not available");
581 r = archive_write_set_format_by_name(cpio->archive, cpio->format);
583 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
584 archive_write_set_bytes_per_block(cpio->archive, cpio->bytes_per_block);
585 cpio->linkresolver = archive_entry_linkresolver_new();
586 archive_entry_linkresolver_set_strategy(cpio->linkresolver,
587 archive_format(cpio->archive));
588 if (cpio->passphrase != NULL)
589 r = archive_write_set_passphrase(cpio->archive,
592 r = archive_write_set_passphrase_callback(cpio->archive, cpio,
593 &passphrase_callback);
595 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
598 * The main loop: Copy each file into the output archive.
600 r = archive_write_open_filename(cpio->archive, cpio->filename);
602 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
603 lr = lafe_line_reader("-", cpio->option_null);
604 while ((p = lafe_line_reader_next(lr)) != NULL)
605 file_to_archive(cpio, p);
606 lafe_line_reader_free(lr);
609 * The hardlink detection may have queued up a couple of entries
610 * that can now be flushed.
613 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
614 while (entry != NULL) {
615 entry_to_archive(cpio, entry);
616 archive_entry_free(entry);
618 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
621 r = archive_write_close(cpio->archive);
623 fprintf(stderr, "\n");
625 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
629 (archive_filter_bytes(cpio->archive, 0) + 511)
631 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
632 blocks == 1 ? "block" : "blocks");
634 archive_write_free(cpio->archive);
635 archive_entry_linkresolver_free(cpio->linkresolver);
639 remove_leading_slash(const char *p)
643 /* Remove leading "//./" or "//?/" or "//?/UNC/"
644 * (absolute path prefixes used by Windows API) */
645 if ((p[0] == '/' || p[0] == '\\') &&
646 (p[1] == '/' || p[1] == '\\') &&
647 (p[2] == '.' || p[2] == '?') &&
648 (p[3] == '/' || p[3] == '\\'))
651 (p[4] == 'U' || p[4] == 'u') &&
652 (p[5] == 'N' || p[5] == 'n') &&
653 (p[6] == 'C' || p[6] == 'c') &&
654 (p[7] == '/' || p[7] == '\\'))
661 /* Remove leading drive letter from archives created
663 if (((p[0] >= 'a' && p[0] <= 'z') ||
664 (p[0] >= 'A' && p[0] <= 'Z')) &&
668 /* Remove leading "/../", "//", etc. */
669 while (p[0] == '/' || p[0] == '\\') {
670 if (p[1] == '.' && p[2] == '.' &&
671 (p[3] == '/' || p[3] == '\\')) {
672 p += 3; /* Remove "/..", leave "/"
675 p += 1; /* Remove "/". */
682 * This is used by both out mode (to copy objects from disk into
683 * an archive) and pass mode (to copy objects from disk to
684 * an archive_write_disk "archive").
687 file_to_archive(struct cpio *cpio, const char *srcpath)
689 const char *destpath;
690 struct archive_entry *entry, *spare;
695 * Create an archive_entry describing the source file.
698 entry = archive_entry_new();
700 lafe_errc(1, 0, "Couldn't allocate entry");
701 archive_entry_copy_sourcepath(entry, srcpath);
702 r = archive_read_disk_entry_from_file(cpio->archive_read_disk,
704 if (r < ARCHIVE_FAILED)
705 lafe_errc(1, 0, "%s",
706 archive_error_string(cpio->archive_read_disk));
709 archive_error_string(cpio->archive_read_disk));
710 if (r <= ARCHIVE_FAILED) {
711 archive_entry_free(entry);
712 cpio->return_value = 1;
716 if (cpio->uid_override >= 0) {
717 archive_entry_set_uid(entry, cpio->uid_override);
718 archive_entry_set_uname(entry, cpio->uname_override);
720 if (cpio->gid_override >= 0) {
721 archive_entry_set_gid(entry, cpio->gid_override);
722 archive_entry_set_gname(entry, cpio->gname_override);
726 * Generate a destination path for this entry.
727 * "destination path" is the name to which it will be copied in
728 * pass mode or the name that will go into the archive in
733 len = strlen(cpio->destdir) + strlen(srcpath) + 8;
734 if (len >= cpio->pass_destpath_alloc) {
735 while (len >= cpio->pass_destpath_alloc) {
736 cpio->pass_destpath_alloc += 512;
737 cpio->pass_destpath_alloc *= 2;
739 free(cpio->pass_destpath);
740 cpio->pass_destpath = malloc(cpio->pass_destpath_alloc);
741 if (cpio->pass_destpath == NULL)
743 "Can't allocate path buffer");
745 strcpy(cpio->pass_destpath, cpio->destdir);
746 strcat(cpio->pass_destpath, remove_leading_slash(srcpath));
747 destpath = cpio->pass_destpath;
749 if (cpio->option_rename)
750 destpath = cpio_rename(destpath);
751 if (destpath == NULL)
753 archive_entry_copy_pathname(entry, destpath);
756 * If we're trying to preserve hardlinks, match them here.
759 if (cpio->linkresolver != NULL
760 && archive_entry_filetype(entry) != AE_IFDIR) {
761 archive_entry_linkify(cpio->linkresolver, &entry, &spare);
765 r = entry_to_archive(cpio, entry);
766 archive_entry_free(entry);
769 r = entry_to_archive(cpio, spare);
770 archive_entry_free(spare);
777 entry_to_archive(struct cpio *cpio, struct archive_entry *entry)
779 const char *destpath = archive_entry_pathname(entry);
780 const char *srcpath = archive_entry_sourcepath(entry);
785 /* Print out the destination name to the user. */
787 fprintf(stderr,"%s", destpath);
789 fprintf(stderr, ".");
792 * Option_link only makes sense in pass mode and for
793 * regular files. Also note: if a link operation fails
794 * because of cross-device restrictions, we'll fall back
795 * to copy mode for that entry.
797 * TODO: Test other cpio implementations to see if they
798 * hard-link anything other than regular files here.
800 if (cpio->option_link
801 && archive_entry_filetype(entry) == AE_IFREG)
803 struct archive_entry *t;
804 /* Save the original entry in case we need it later. */
805 t = archive_entry_clone(entry);
807 lafe_errc(1, ENOMEM, "Can't create link");
808 /* Note: link(2) doesn't create parent directories,
809 * so we use archive_write_header() instead as a
811 archive_entry_set_hardlink(t, srcpath);
812 /* This is a straight link that carries no data. */
813 archive_entry_set_size(t, 0);
814 r = archive_write_header(cpio->archive, t);
815 archive_entry_free(t);
817 lafe_warnc(archive_errno(cpio->archive),
818 "%s", archive_error_string(cpio->archive));
819 if (r == ARCHIVE_FATAL)
822 if (r != ARCHIVE_OK && archive_errno(cpio->archive) == EXDEV) {
823 /* Cross-device link: Just fall through and use
824 * the original entry to copy the file over. */
825 lafe_warnc(0, "Copying file instead");
832 * Make sure we can open the file (if necessary) before
833 * trying to write the header.
835 if (archive_entry_filetype(entry) == AE_IFREG) {
836 if (archive_entry_size(entry) > 0) {
837 fd = open(srcpath, O_RDONLY | O_BINARY);
840 "%s: could not open file", srcpath);
845 archive_entry_set_size(entry, 0);
848 r = archive_write_header(cpio->archive, entry);
851 lafe_warnc(archive_errno(cpio->archive),
854 archive_error_string(cpio->archive));
856 if (r == ARCHIVE_FATAL)
859 if (r >= ARCHIVE_WARN && archive_entry_size(entry) > 0 && fd >= 0) {
860 bytes_read = read(fd, cpio->buff, (unsigned)cpio->buff_size);
861 while (bytes_read > 0) {
863 bytes_write = archive_write_data(cpio->archive,
864 cpio->buff, bytes_read);
866 lafe_errc(1, archive_errno(cpio->archive),
867 "%s", archive_error_string(cpio->archive));
868 if (bytes_write < bytes_read) {
870 "Truncated write; file may have "
871 "grown while being archived.");
873 bytes_read = read(fd, cpio->buff,
874 (unsigned)cpio->buff_size);
878 fd = restore_time(cpio, entry, srcpath, fd);
882 fprintf(stderr,"\n");
889 restore_time(struct cpio *cpio, struct archive_entry *entry,
890 const char *name, int fd)
893 static int warned = 0;
895 (void)cpio; /* UNUSED */
896 (void)entry; /* UNUSED */
897 (void)name; /* UNUSED */
900 lafe_warnc(0, "Can't restore access times on this platform");
904 #if defined(_WIN32) && !defined(__CYGWIN__)
905 struct __timeval times[2];
907 struct timeval times[2];
910 if (!cpio->option_atime_restore)
913 times[1].tv_sec = archive_entry_mtime(entry);
914 times[1].tv_usec = archive_entry_mtime_nsec(entry) / 1000;
916 times[0].tv_sec = archive_entry_atime(entry);
917 times[0].tv_usec = archive_entry_atime_nsec(entry) / 1000;
919 #if defined(HAVE_FUTIMES) && !defined(__CYGWIN__)
920 if (fd >= 0 && futimes(fd, times) == 0)
924 * Some platform cannot restore access times if the file descriptor
933 if (lutimes(name, times) != 0)
935 if ((AE_IFLNK != archive_entry_filetype(entry))
936 && utimes(name, times) != 0)
938 lafe_warnc(errno, "Can't update time for %s", name);
945 mode_in(struct cpio *cpio)
948 struct archive_entry *entry;
950 const char *destpath;
953 ext = archive_write_disk_new();
955 lafe_errc(1, 0, "Couldn't allocate restore object");
956 r = archive_write_disk_set_options(ext, cpio->extract_flags);
958 lafe_errc(1, 0, "%s", archive_error_string(ext));
959 a = archive_read_new();
961 lafe_errc(1, 0, "Couldn't allocate archive object");
962 archive_read_support_filter_all(a);
963 archive_read_support_format_all(a);
964 if (cpio->passphrase != NULL)
965 r = archive_read_add_passphrase(a, cpio->passphrase);
967 r = archive_read_set_passphrase_callback(a, cpio,
968 &passphrase_callback);
970 lafe_errc(1, 0, "%s", archive_error_string(a));
972 if (archive_read_open_filename(a, cpio->filename,
973 cpio->bytes_per_block))
974 lafe_errc(1, archive_errno(a),
975 "%s", archive_error_string(a));
977 r = archive_read_next_header(a, &entry);
978 if (r == ARCHIVE_EOF)
980 if (r != ARCHIVE_OK) {
981 lafe_errc(1, archive_errno(a),
982 "%s", archive_error_string(a));
984 if (archive_match_path_excluded(cpio->matching, entry))
986 if (cpio->option_rename) {
987 destpath = cpio_rename(archive_entry_pathname(entry));
988 archive_entry_set_pathname(entry, destpath);
990 destpath = archive_entry_pathname(entry);
991 if (destpath == NULL)
994 fprintf(stderr, "%s\n", destpath);
996 fprintf(stderr, ".");
997 if (cpio->uid_override >= 0)
998 archive_entry_set_uid(entry, cpio->uid_override);
999 if (cpio->gid_override >= 0)
1000 archive_entry_set_gid(entry, cpio->gid_override);
1001 r = archive_write_header(ext, entry);
1002 if (r != ARCHIVE_OK) {
1003 fprintf(stderr, "%s: %s\n",
1004 archive_entry_pathname(entry),
1005 archive_error_string(ext));
1006 } else if (!archive_entry_size_is_set(entry)
1007 || archive_entry_size(entry) > 0) {
1008 r = extract_data(a, ext);
1009 if (r != ARCHIVE_OK)
1010 cpio->return_value = 1;
1013 r = archive_read_close(a);
1015 fprintf(stderr, "\n");
1016 if (r != ARCHIVE_OK)
1017 lafe_errc(1, 0, "%s", archive_error_string(a));
1018 r = archive_write_close(ext);
1019 if (r != ARCHIVE_OK)
1020 lafe_errc(1, 0, "%s", archive_error_string(ext));
1022 int64_t blocks = (archive_filter_bytes(a, 0) + 511)
1024 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1025 blocks == 1 ? "block" : "blocks");
1027 archive_read_free(a);
1028 archive_write_free(ext);
1029 exit(cpio->return_value);
1033 * Exits if there's a fatal error. Returns ARCHIVE_OK
1034 * if everything is kosher.
1037 extract_data(struct archive *ar, struct archive *aw)
1045 r = archive_read_data_block(ar, &block, &size, &offset);
1046 if (r == ARCHIVE_EOF)
1047 return (ARCHIVE_OK);
1048 if (r != ARCHIVE_OK) {
1049 lafe_warnc(archive_errno(ar),
1050 "%s", archive_error_string(ar));
1053 r = (int)archive_write_data_block(aw, block, size, offset);
1054 if (r != ARCHIVE_OK) {
1055 lafe_warnc(archive_errno(aw),
1056 "%s", archive_error_string(aw));
1063 mode_list(struct cpio *cpio)
1066 struct archive_entry *entry;
1069 a = archive_read_new();
1071 lafe_errc(1, 0, "Couldn't allocate archive object");
1072 archive_read_support_filter_all(a);
1073 archive_read_support_format_all(a);
1074 if (cpio->passphrase != NULL)
1075 r = archive_read_add_passphrase(a, cpio->passphrase);
1077 r = archive_read_set_passphrase_callback(a, cpio,
1078 &passphrase_callback);
1079 if (r != ARCHIVE_OK)
1080 lafe_errc(1, 0, "%s", archive_error_string(a));
1082 if (archive_read_open_filename(a, cpio->filename,
1083 cpio->bytes_per_block))
1084 lafe_errc(1, archive_errno(a),
1085 "%s", archive_error_string(a));
1087 r = archive_read_next_header(a, &entry);
1088 if (r == ARCHIVE_EOF)
1090 if (r != ARCHIVE_OK) {
1091 lafe_errc(1, archive_errno(a),
1092 "%s", archive_error_string(a));
1094 if (archive_match_path_excluded(cpio->matching, entry))
1097 list_item_verbose(cpio, entry);
1099 fprintf(stdout, "%s\n", archive_entry_pathname(entry));
1101 r = archive_read_close(a);
1102 if (r != ARCHIVE_OK)
1103 lafe_errc(1, 0, "%s", archive_error_string(a));
1105 int64_t blocks = (archive_filter_bytes(a, 0) + 511)
1107 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1108 blocks == 1 ? "block" : "blocks");
1110 archive_read_free(a);
1115 * Display information about the current file.
1117 * The format here roughly duplicates the output of 'ls -l'.
1118 * This is based on SUSv2, where 'tar tv' is documented as
1119 * listing additional information in an "unspecified format,"
1120 * and 'pax -l' is documented as using the same format as 'ls -l'.
1123 list_item_verbose(struct cpio *cpio, struct archive_entry *entry)
1127 char uids[16], gids[16];
1128 const char *uname, *gname;
1137 if (cpio->option_numeric_uid_gid) {
1138 /* Format numeric uid/gid for display. */
1139 strcpy(uids, cpio_i64toa(archive_entry_uid(entry)));
1141 strcpy(gids, cpio_i64toa(archive_entry_gid(entry)));
1144 /* Use uname if it's present, else lookup name from uid. */
1145 uname = archive_entry_uname(entry);
1147 uname = lookup_uname(cpio, (uid_t)archive_entry_uid(entry));
1148 /* Use gname if it's present, else lookup name from gid. */
1149 gname = archive_entry_gname(entry);
1151 gname = lookup_gname(cpio, (uid_t)archive_entry_gid(entry));
1154 /* Print device number or file size. */
1155 if (archive_entry_filetype(entry) == AE_IFCHR
1156 || archive_entry_filetype(entry) == AE_IFBLK) {
1157 snprintf(size, sizeof(size), "%lu,%lu",
1158 (unsigned long)archive_entry_rdevmajor(entry),
1159 (unsigned long)archive_entry_rdevminor(entry));
1161 strcpy(size, cpio_i64toa(archive_entry_size(entry)));
1164 /* Format the time using 'ls -l' conventions. */
1165 mtime = archive_entry_mtime(entry);
1166 #if defined(_WIN32) && !defined(__CYGWIN__)
1167 /* Windows' strftime function does not support %e format. */
1168 if (mtime - now > 365*86400/2
1169 || mtime - now < -365*86400/2)
1170 fmt = cpio->day_first ? "%d %b %Y" : "%b %d %Y";
1172 fmt = cpio->day_first ? "%d %b %H:%M" : "%b %d %H:%M";
1174 if (mtime - now > 365*86400/2
1175 || mtime - now < -365*86400/2)
1176 fmt = cpio->day_first ? "%e %b %Y" : "%b %e %Y";
1178 fmt = cpio->day_first ? "%e %b %H:%M" : "%b %e %H:%M";
1180 strftime(date, sizeof(date), fmt, localtime(&mtime));
1182 fprintf(out, "%s%3d %-8s %-8s %8s %12s %s",
1183 archive_entry_strmode(entry),
1184 archive_entry_nlink(entry),
1185 uname, gname, size, date,
1186 archive_entry_pathname(entry));
1188 /* Extra information for links. */
1189 if (archive_entry_hardlink(entry)) /* Hard link */
1190 fprintf(out, " link to %s", archive_entry_hardlink(entry));
1191 else if (archive_entry_symlink(entry)) /* Symbolic link */
1192 fprintf(out, " -> %s", archive_entry_symlink(entry));
1197 mode_pass(struct cpio *cpio, const char *destdir)
1199 struct lafe_line_reader *lr;
1204 /* Ensure target dir has a trailing '/' to simplify path surgery. */
1205 destdir_len = strlen(destdir);
1206 cpio->destdir = malloc(destdir_len + 8);
1207 memcpy(cpio->destdir, destdir, destdir_len);
1208 if (destdir_len == 0 || destdir[destdir_len - 1] != '/')
1209 cpio->destdir[destdir_len++] = '/';
1210 cpio->destdir[destdir_len++] = '\0';
1212 cpio->archive = archive_write_disk_new();
1213 if (cpio->archive == NULL)
1214 lafe_errc(1, 0, "Failed to allocate archive object");
1215 r = archive_write_disk_set_options(cpio->archive, cpio->extract_flags);
1216 if (r != ARCHIVE_OK)
1217 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
1218 cpio->linkresolver = archive_entry_linkresolver_new();
1219 archive_write_disk_set_standard_lookup(cpio->archive);
1221 cpio->archive_read_disk = archive_read_disk_new();
1222 if (cpio->archive_read_disk == NULL)
1223 lafe_errc(1, 0, "Failed to allocate archive object");
1224 if (cpio->option_follow_links)
1225 archive_read_disk_set_symlink_logical(cpio->archive_read_disk);
1227 archive_read_disk_set_symlink_physical(cpio->archive_read_disk);
1228 archive_read_disk_set_standard_lookup(cpio->archive_read_disk);
1230 lr = lafe_line_reader("-", cpio->option_null);
1231 while ((p = lafe_line_reader_next(lr)) != NULL)
1232 file_to_archive(cpio, p);
1233 lafe_line_reader_free(lr);
1235 archive_entry_linkresolver_free(cpio->linkresolver);
1236 r = archive_write_close(cpio->archive);
1238 fprintf(stderr, "\n");
1239 if (r != ARCHIVE_OK)
1240 lafe_errc(1, 0, "%s", archive_error_string(cpio->archive));
1244 (archive_filter_bytes(cpio->archive, 0) + 511)
1246 fprintf(stderr, "%lu %s\n", (unsigned long)blocks,
1247 blocks == 1 ? "block" : "blocks");
1250 archive_write_free(cpio->archive);
1251 free(cpio->pass_destpath);
1255 * Prompt for a new name for this entry. Returns a pointer to the
1256 * new name or NULL if the entry should not be copied. This
1257 * implements the semantics defined in POSIX.1-1996, which specifies
1258 * that an input of '.' means the name should be unchanged. GNU cpio
1259 * treats '.' as a literal new name.
1262 cpio_rename(const char *name)
1264 static char buff[1024];
1267 #if defined(_WIN32) && !defined(__CYGWIN__)
1270 t = fopen("CONIN$", "r");
1273 to = fopen("CONOUT$", "w");
1278 fprintf(to, "%s (Enter/./(new name))? ", name);
1281 t = fopen("/dev/tty", "r+");
1284 fprintf(t, "%s (Enter/./(new name))? ", name);
1288 p = fgets(buff, sizeof(buff), t);
1291 /* End-of-file is a blank line. */
1294 while (*p == ' ' || *p == '\t')
1296 if (*p == '\n' || *p == '\0')
1299 if (*p == '.' && p[1] == '\n')
1300 /* Single period preserves original name. */
1303 /* Trim the final newline. */
1304 while (*p != '\0' && *p != '\n')
1306 /* Overwrite the final \n with a null character. */
1312 free_cache(struct name_cache *cache)
1316 if (cache != NULL) {
1317 for (i = 0; i < cache->size; i++)
1318 free(cache->cache[i].name);
1324 * Lookup uname/gname from uid/gid, return NULL if no match.
1327 lookup_name(struct cpio *cpio, struct name_cache **name_cache_variable,
1328 int (*lookup_fn)(struct cpio *, const char **, id_t), id_t id)
1331 struct name_cache *cache;
1336 if (*name_cache_variable == NULL) {
1337 *name_cache_variable = calloc(1, sizeof(struct name_cache));
1338 if (*name_cache_variable == NULL)
1339 lafe_errc(1, ENOMEM, "No more memory");
1340 (*name_cache_variable)->size = name_cache_size;
1343 cache = *name_cache_variable;
1346 slot = id % cache->size;
1347 if (cache->cache[slot].name != NULL) {
1348 if (cache->cache[slot].id == id) {
1350 return (cache->cache[slot].name);
1352 free(cache->cache[slot].name);
1353 cache->cache[slot].name = NULL;
1356 if (lookup_fn(cpio, &name, id)) {
1357 /* If lookup failed, format it as a number. */
1358 snprintf(asnum, sizeof(asnum), "%u", (unsigned)id);
1362 cache->cache[slot].name = strdup(name);
1363 if (cache->cache[slot].name != NULL) {
1364 cache->cache[slot].id = id;
1365 return (cache->cache[slot].name);
1369 * Conveniently, NULL marks an empty slot, so
1370 * if the strdup() fails, we've just failed to
1371 * cache it. No recovery necessary.
1377 lookup_uname(struct cpio *cpio, uid_t uid)
1379 return (lookup_name(cpio, &cpio->uname_cache,
1380 &lookup_uname_helper, (id_t)uid));
1384 lookup_uname_helper(struct cpio *cpio, const char **name, id_t id)
1386 struct passwd *pwent;
1388 (void)cpio; /* UNUSED */
1391 pwent = getpwuid((uid_t)id);
1392 if (pwent == NULL) {
1393 if (errno && errno != ENOENT)
1394 lafe_warnc(errno, "getpwuid(%s) failed",
1395 cpio_i64toa((int64_t)id));
1399 *name = pwent->pw_name;
1404 lookup_gname(struct cpio *cpio, gid_t gid)
1406 return (lookup_name(cpio, &cpio->gname_cache,
1407 &lookup_gname_helper, (id_t)gid));
1411 lookup_gname_helper(struct cpio *cpio, const char **name, id_t id)
1413 struct group *grent;
1415 (void)cpio; /* UNUSED */
1418 grent = getgrgid((gid_t)id);
1419 if (grent == NULL) {
1420 if (errno && errno != ENOENT)
1421 lafe_warnc(errno, "getgrgid(%s) failed",
1422 cpio_i64toa((int64_t)id));
1426 *name = grent->gr_name;
1431 * It would be nice to just use printf() for formatting large numbers,
1432 * but the compatibility problems are a big headache. Hence the
1433 * following simple utility function.
1436 cpio_i64toa(int64_t n0)
1438 /* 2^64 =~ 1.8 * 10^19, so 20 decimal digits suffice.
1439 * We also need 1 byte for '-' and 1 for '\0'.
1441 static char buff[22];
1442 int64_t n = n0 < 0 ? -n0 : n0;
1443 char *p = buff + sizeof(buff);
1447 *--p = '0' + (int)(n % 10);
1455 #define PPBUFF_SIZE 1024
1457 passphrase_callback(struct archive *a, void *_client_data)
1459 struct cpio *cpio = (struct cpio *)_client_data;
1460 (void)a; /* UNUSED */
1462 if (cpio->ppbuff == NULL) {
1463 cpio->ppbuff = malloc(PPBUFF_SIZE);
1464 if (cpio->ppbuff == NULL)
1465 lafe_errc(1, errno, "Out of memory");
1467 return lafe_readpassphrase("Enter passphrase:",
1468 cpio->ppbuff, PPBUFF_SIZE);
1472 passphrase_free(char *ppbuff)
1474 if (ppbuff != NULL) {
1475 memset(ppbuff, 0, PPBUFF_SIZE);