/*- * Copyright (c) 2003-2008 Tim Kientzle * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "bsdtar_platform.h" __FBSDID("$FreeBSD$"); #ifdef HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_STAT_H #include #endif #ifdef HAVE_COPYFILE_H #include #endif #ifdef HAVE_ERRNO_H #include #endif #ifdef HAVE_FCNTL_H #include #endif #ifdef HAVE_LANGINFO_H #include #endif #ifdef HAVE_LOCALE_H #include #endif #ifdef HAVE_PATHS_H #include #endif #ifdef HAVE_SIGNAL_H #include #endif #include #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_STRING_H #include #endif #ifdef HAVE_TIME_H #include #endif #ifdef HAVE_UNISTD_H #include #endif #include "bsdtar.h" #include "err.h" /* * Per POSIX.1-1988, tar defaults to reading/writing archives to/from * the default tape device for the system. Pick something reasonable here. */ #ifdef __linux #define _PATH_DEFTAPE "/dev/st0" #endif #if defined(_WIN32) && !defined(__CYGWIN__) #define _PATH_DEFTAPE "\\\\.\\tape0" #endif #if defined(__APPLE__) #undef _PATH_DEFTAPE #define _PATH_DEFTAPE "-" /* Mac OS has no tape support, default to stdio. */ #endif #ifndef _PATH_DEFTAPE #define _PATH_DEFTAPE "/dev/tape" #endif #ifdef __MINGW32__ int _CRT_glob = 0; /* Disable broken CRT globbing. */ #endif #if defined(HAVE_SIGACTION) && (defined(SIGINFO) || defined(SIGUSR1)) static volatile int siginfo_occurred; static void siginfo_handler(int sig) { (void)sig; /* UNUSED */ siginfo_occurred = 1; } int need_report(void) { int r = siginfo_occurred; siginfo_occurred = 0; return (r); } #else int need_report(void) { return (0); } #endif static void long_help(void); static void only_mode(struct bsdtar *, const char *opt, const char *valid); static void set_mode(struct bsdtar *, char opt); static void version(void); /* A basic set of security flags to request from libarchive. */ #define SECURITY \ (ARCHIVE_EXTRACT_SECURE_SYMLINKS \ | ARCHIVE_EXTRACT_SECURE_NODOTDOT) int main(int argc, char **argv) { struct bsdtar *bsdtar, bsdtar_storage; int opt, t; char compression, compression2; const char *compression_name, *compression2_name; const char *compress_program; char option_a, option_o; char possible_help_request; char buff[16]; /* * Use a pointer for consistency, but stack-allocated storage * for ease of cleanup. */ bsdtar = &bsdtar_storage; memset(bsdtar, 0, sizeof(*bsdtar)); bsdtar->fd = -1; /* Mark as "unused" */ bsdtar->gid = -1; bsdtar->uid = -1; option_a = option_o = 0; compression = compression2 = '\0'; compression_name = compression2_name = NULL; compress_program = NULL; #if defined(HAVE_SIGACTION) { /* Set up signal handling. */ struct sigaction sa; sa.sa_handler = siginfo_handler; sigemptyset(&sa.sa_mask); sa.sa_flags = 0; #ifdef SIGINFO if (sigaction(SIGINFO, &sa, NULL)) lafe_errc(1, errno, "sigaction(SIGINFO) failed"); #endif #ifdef SIGUSR1 /* ... and treat SIGUSR1 the same way as SIGINFO. */ if (sigaction(SIGUSR1, &sa, NULL)) lafe_errc(1, errno, "sigaction(SIGUSR1) failed"); #endif #ifdef SIGPIPE /* Ignore SIGPIPE signals. */ sa.sa_handler = SIG_IGN; sigaction(SIGPIPE, &sa, NULL); #endif } #endif /* Set lafe_progname before calling lafe_warnc. */ lafe_setprogname(*argv, "bsdtar"); #if HAVE_SETLOCALE if (setlocale(LC_ALL, "") == NULL) lafe_warnc(0, "Failed to set default locale"); #endif #if defined(HAVE_NL_LANGINFO) && defined(HAVE_D_MD_ORDER) bsdtar->day_first = (*nl_langinfo(D_MD_ORDER) == 'd'); #endif possible_help_request = 0; /* Look up uid of current user for future reference */ bsdtar->user_uid = geteuid(); /* Default: open tape drive. */ bsdtar->filename = getenv("TAPE"); if (bsdtar->filename == NULL) bsdtar->filename = _PATH_DEFTAPE; /* Default block size settings. */ bsdtar->bytes_per_block = DEFAULT_BYTES_PER_BLOCK; /* Allow library to default this unless user specifies -b. */ bsdtar->bytes_in_last_block = -1; /* Default: preserve mod time on extract */ bsdtar->extract_flags = ARCHIVE_EXTRACT_TIME; /* Default: Perform basic security checks. */ bsdtar->extract_flags |= SECURITY; #ifndef _WIN32 /* On POSIX systems, assume --same-owner and -p when run by * the root user. This doesn't make any sense on Windows. */ if (bsdtar->user_uid == 0) { /* --same-owner */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; /* -p */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; } #endif /* * Enable Mac OS "copyfile()" extension by default. * This has no effect on other platforms. */ bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; #ifdef COPYFILE_DISABLE_VAR if (getenv(COPYFILE_DISABLE_VAR)) bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; #endif bsdtar->matching = archive_match_new(); if (bsdtar->matching == NULL) lafe_errc(1, errno, "Out of memory"); bsdtar->cset = cset_new(); if (bsdtar->cset == NULL) lafe_errc(1, errno, "Out of memory"); bsdtar->argv = argv; bsdtar->argc = argc; /* * Comments following each option indicate where that option * originated: SUSv2, POSIX, GNU tar, star, etc. If there's * no such comment, then I don't know of anyone else who * implements that option. */ while ((opt = bsdtar_getopt(bsdtar)) != -1) { switch (opt) { case 'a': /* GNU tar */ option_a = 1; /* Record it and resolve it later. */ break; case 'B': /* GNU tar */ /* libarchive doesn't need this; just ignore it. */ break; case 'b': /* SUSv2 */ t = atoi(bsdtar->argument); if (t <= 0 || t > 8192) lafe_errc(1, 0, "Argument to -b is out of range (1..8192)"); bsdtar->bytes_per_block = 512 * t; /* Explicit -b forces last block size. */ bsdtar->bytes_in_last_block = bsdtar->bytes_per_block; break; case OPTION_B64ENCODE: if (compression2 != '\0') lafe_errc(1, 0, "Can't specify both --uuencode and " "--b64encode"); compression2 = opt; compression2_name = "b64encode"; break; case 'C': /* GNU tar */ if (strlen(bsdtar->argument) == 0) lafe_errc(1, 0, "Meaningless option: -C ''"); set_chdir(bsdtar, bsdtar->argument); break; case 'c': /* SUSv2 */ set_mode(bsdtar, opt); break; case OPTION_CHECK_LINKS: /* GNU tar */ bsdtar->option_warn_links = 1; break; case OPTION_CHROOT: /* NetBSD */ bsdtar->option_chroot = 1; break; case OPTION_CLEAR_NOCHANGE_FFLAGS: bsdtar->extract_flags |= ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS; break; case OPTION_DISABLE_COPYFILE: /* Mac OS X */ bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; break; case OPTION_EXCLUDE: /* GNU tar */ if (archive_match_exclude_pattern( bsdtar->matching, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Couldn't exclude %s\n", bsdtar->argument); break; case OPTION_FORMAT: /* GNU tar, others */ cset_set_format(bsdtar->cset, bsdtar->argument); break; case 'f': /* SUSv2 */ bsdtar->filename = bsdtar->argument; break; case OPTION_GID: /* cpio */ t = atoi(bsdtar->argument); if (t < 0) lafe_errc(1, 0, "Argument to --gid must be positive"); bsdtar->gid = t; break; case OPTION_GNAME: /* cpio */ bsdtar->gname = bsdtar->argument; break; case OPTION_GRZIP: if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; compression_name = "grzip"; break; case 'H': /* BSD convention */ bsdtar->symlink_mode = 'H'; break; case 'h': /* Linux Standards Base, gtar; synonym for -L */ bsdtar->symlink_mode = 'L'; /* Hack: -h by itself is the "help" command. */ possible_help_request = 1; break; case OPTION_HELP: /* GNU tar, others */ long_help(); exit(0); break; case OPTION_HFS_COMPRESSION: /* Mac OS X v10.6 or later */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED; break; case OPTION_IGNORE_ZEROS: bsdtar->option_ignore_zeros = 1; break; case 'I': /* GNU tar */ /* * TODO: Allow 'names' to come from an archive, * not just a text file. Design a good UI for * allowing names and mode/owner to be read * from an archive, with contents coming from * disk. This can be used to "refresh" an * archive or to design archives with special * permissions without having to create those * permissions on disk. */ bsdtar->names_from_file = bsdtar->argument; break; case OPTION_INCLUDE: /* * No one else has the @archive extension, so * no one else needs this to filter entries * when transforming archives. */ if (archive_match_include_pattern(bsdtar->matching, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Failed to add %s to inclusion list", bsdtar->argument); break; case 'j': /* GNU tar */ if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; compression_name = "bzip2"; break; case 'J': /* GNU tar 1.21 and later */ if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; compression_name = "xz"; break; case 'k': /* GNU tar */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE; break; case OPTION_KEEP_NEWER_FILES: /* GNU tar */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; break; case 'L': /* BSD convention */ bsdtar->symlink_mode = 'L'; break; case 'l': /* SUSv2 and GNU tar beginning with 1.16 */ /* GNU tar 1.13 used -l for --one-file-system */ bsdtar->option_warn_links = 1; break; case OPTION_LRZIP: case OPTION_LZ4: case OPTION_LZIP: /* GNU tar beginning with 1.23 */ case OPTION_LZMA: /* GNU tar beginning with 1.20 */ case OPTION_LZOP: /* GNU tar beginning with 1.21 */ if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; switch (opt) { case OPTION_LRZIP: compression_name = "lrzip"; break; case OPTION_LZ4: compression_name = "lz4"; break; case OPTION_LZIP: compression_name = "lzip"; break; case OPTION_LZMA: compression_name = "lzma"; break; case OPTION_LZOP: compression_name = "lzop"; break; } break; case 'm': /* SUSv2 */ bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_TIME; break; case 'n': /* GNU tar */ bsdtar->option_no_subdirs = 1; break; /* * Selecting files by time: * --newer-?time='date' Only files newer than 'date' * --newer-?time-than='file' Only files newer than time * on specified file (useful for incremental backups) */ case OPTION_NEWER_CTIME: /* GNU tar */ if (archive_match_include_date(bsdtar->matching, ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_NEWER_CTIME_THAN: if (archive_match_include_file_time(bsdtar->matching, ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_NEWER_MTIME: /* GNU tar */ if (archive_match_include_date(bsdtar->matching, ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_NEWER_MTIME_THAN: if (archive_match_include_file_time(bsdtar->matching, ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_NODUMP: /* star */ bsdtar->readdisk_flags |= ARCHIVE_READDISK_HONOR_NODUMP; break; case OPTION_NOPRESERVE_HFS_COMPRESSION: /* Mac OS X v10.6 or later */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_HFS_COMPRESSION; break; case OPTION_NO_SAME_OWNER: /* GNU tar */ bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; break; case OPTION_NO_SAME_PERMISSIONS: /* GNU tar */ bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_PERM; bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; break; case OPTION_NO_XATTR: /* Issue #131 */ bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_XATTR; break; case OPTION_NULL: /* GNU tar */ bsdtar->option_null++; break; case OPTION_NUMERIC_OWNER: /* GNU tar */ bsdtar->uname = ""; bsdtar->gname = ""; bsdtar->option_numeric_owner++; break; case 'O': /* GNU tar */ bsdtar->option_stdout = 1; break; case 'o': /* SUSv2 and GNU conflict here, but not fatally */ option_o = 1; /* Record it and resolve it later. */ break; /* * Selecting files by time: * --older-?time='date' Only files older than 'date' * --older-?time-than='file' Only files older than time * on specified file */ case OPTION_OLDER_CTIME: if (archive_match_include_date(bsdtar->matching, ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_OLDER_CTIME_THAN: if (archive_match_include_file_time(bsdtar->matching, ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_OLDER_MTIME: if (archive_match_include_date(bsdtar->matching, ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_OLDER_MTIME_THAN: if (archive_match_include_file_time(bsdtar->matching, ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, bsdtar->argument) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case OPTION_ONE_FILE_SYSTEM: /* GNU tar */ bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS; break; case OPTION_OPTIONS: bsdtar->option_options = bsdtar->argument; break; #if 0 /* * The common BSD -P option is not necessary, since * our default is to archive symlinks, not follow * them. This is convenient, as -P conflicts with GNU * tar anyway. */ case 'P': /* BSD convention */ /* Default behavior, no option necessary. */ break; #endif case 'P': /* GNU tar */ bsdtar->extract_flags &= ~SECURITY; bsdtar->option_absolute_paths = 1; break; case 'p': /* GNU tar, star */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; break; case OPTION_PASSPHRASE: bsdtar->passphrase = bsdtar->argument; break; case OPTION_POSIX: /* GNU tar */ cset_set_format(bsdtar->cset, "pax"); break; case 'q': /* FreeBSD GNU tar --fast-read, NetBSD -q */ bsdtar->option_fast_read = 1; break; case 'r': /* SUSv2 */ set_mode(bsdtar, opt); break; case 'S': /* NetBSD pax-as-tar */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_SPARSE; break; case 's': /* NetBSD pax-as-tar */ #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) add_substitution(bsdtar, bsdtar->argument); #else lafe_warnc(0, "-s is not supported by this version of bsdtar"); usage(); #endif break; case OPTION_SAME_OWNER: /* GNU tar */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; break; case OPTION_STRIP_COMPONENTS: /* GNU tar 1.15 */ errno = 0; bsdtar->strip_components = strtol(bsdtar->argument, NULL, 0); if (errno) lafe_errc(1, 0, "Invalid --strip-components argument: %s", bsdtar->argument); break; case 'T': /* GNU tar */ bsdtar->names_from_file = bsdtar->argument; break; case 't': /* SUSv2 */ set_mode(bsdtar, opt); bsdtar->verbose++; break; case OPTION_TOTALS: /* GNU tar */ bsdtar->option_totals++; break; case 'U': /* GNU tar */ bsdtar->extract_flags |= ARCHIVE_EXTRACT_UNLINK; bsdtar->option_unlink_first = 1; break; case 'u': /* SUSv2 */ set_mode(bsdtar, opt); break; case OPTION_UID: /* cpio */ t = atoi(bsdtar->argument); if (t < 0) lafe_errc(1, 0, "Argument to --uid must be positive"); bsdtar->uid = t; break; case OPTION_UNAME: /* cpio */ bsdtar->uname = bsdtar->argument; break; case OPTION_UUENCODE: if (compression2 != '\0') lafe_errc(1, 0, "Can't specify both --uuencode and " "--b64encode"); compression2 = opt; compression2_name = "uuencode"; break; case 'v': /* SUSv2 */ bsdtar->verbose++; break; case OPTION_VERSION: /* GNU convention */ version(); break; #if 0 /* * The -W longopt feature is handled inside of * bsdtar_getopt(), so -W is not available here. */ case 'W': /* Obscure GNU convention. */ break; #endif case 'w': /* SUSv2 */ bsdtar->option_interactive = 1; break; case 'X': /* GNU tar */ if (archive_match_exclude_pattern_from_file( bsdtar->matching, bsdtar->argument, 0) != ARCHIVE_OK) lafe_errc(1, 0, "Error : %s", archive_error_string(bsdtar->matching)); break; case 'x': /* SUSv2 */ set_mode(bsdtar, opt); break; case 'y': /* FreeBSD version of GNU tar */ if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; compression_name = "bzip2"; break; case 'Z': /* GNU tar */ if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; compression_name = "compress"; break; case 'z': /* GNU tar, star, many others */ if (compression != '\0') lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, compression); compression = opt; compression_name = "gzip"; break; case OPTION_USE_COMPRESS_PROGRAM: compress_program = bsdtar->argument; break; default: usage(); } } /* * Sanity-check options. */ /* If no "real" mode was specified, treat -h as --help. */ if ((bsdtar->mode == '\0') && possible_help_request) { long_help(); exit(0); } /* Otherwise, a mode is required. */ if (bsdtar->mode == '\0') lafe_errc(1, 0, "Must specify one of -c, -r, -t, -u, -x"); /* Check boolean options only permitted in certain modes. */ if (option_a) only_mode(bsdtar, "-a", "c"); if (bsdtar->readdisk_flags & ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS) only_mode(bsdtar, "--one-file-system", "cru"); if (bsdtar->option_fast_read) only_mode(bsdtar, "--fast-read", "xt"); if (bsdtar->extract_flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) only_mode(bsdtar, "--hfsCompression", "x"); if (bsdtar->extract_flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) only_mode(bsdtar, "--nopreserveHFSCompression", "x"); if (bsdtar->readdisk_flags & ARCHIVE_READDISK_HONOR_NODUMP) only_mode(bsdtar, "--nodump", "cru"); if (bsdtar->readdisk_flags & ARCHIVE_READDISK_NO_XATTR) only_mode(bsdtar, "--no-xattr", "crux"); if (option_o > 0) { switch (bsdtar->mode) { case 'c': /* * In GNU tar, -o means "old format." The * "ustar" format is the closest thing * supported by libarchive. */ cset_set_format(bsdtar->cset, "ustar"); /* TODO: bsdtar->create_format = "v7"; */ break; case 'x': /* POSIX-compatible behavior. */ bsdtar->option_no_owner = 1; bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; break; default: only_mode(bsdtar, "-o", "xc"); break; } } if (bsdtar->option_no_subdirs) only_mode(bsdtar, "-n", "cru"); if (bsdtar->option_stdout) only_mode(bsdtar, "-O", "xt"); if (bsdtar->option_unlink_first) only_mode(bsdtar, "-U", "x"); if (bsdtar->option_warn_links) only_mode(bsdtar, "--check-links", "cr"); if (option_a && cset_auto_compress(bsdtar->cset, bsdtar->filename)) { /* Ignore specified compressions if auto-compress works. */ compression = '\0'; compression2 = '\0'; } /* Check other parameters only permitted in certain modes. */ if (compress_program != NULL) { only_mode(bsdtar, "--use-compress-program", "cxt"); cset_add_filter_program(bsdtar->cset, compress_program); /* Ignore specified compressions. */ compression = '\0'; compression2 = '\0'; } if (compression != '\0') { switch (compression) { case 'J': case 'j': case 'y': case 'Z': case 'z': strcpy(buff, "-?"); buff[1] = compression; break; default: strcpy(buff, "--"); strcat(buff, compression_name); break; } only_mode(bsdtar, buff, "cxt"); cset_add_filter(bsdtar->cset, compression_name); } if (compression2 != '\0') { strcpy(buff, "--"); strcat(buff, compression2_name); only_mode(bsdtar, buff, "cxt"); cset_add_filter(bsdtar->cset, compression2_name); } if (cset_get_format(bsdtar->cset) != NULL) only_mode(bsdtar, "--format", "cru"); if (bsdtar->symlink_mode != '\0') { strcpy(buff, "-?"); buff[1] = bsdtar->symlink_mode; only_mode(bsdtar, buff, "cru"); } /* Filename "-" implies stdio. */ if (strcmp(bsdtar->filename, "-") == 0) bsdtar->filename = NULL; switch(bsdtar->mode) { case 'c': tar_mode_c(bsdtar); break; case 'r': tar_mode_r(bsdtar); break; case 't': tar_mode_t(bsdtar); break; case 'u': tar_mode_u(bsdtar); break; case 'x': tar_mode_x(bsdtar); break; } archive_match_free(bsdtar->matching); #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) cleanup_substitution(bsdtar); #endif cset_free(bsdtar->cset); passphrase_free(bsdtar->ppbuff); if (bsdtar->return_value != 0) lafe_warnc(0, "Error exit delayed from previous errors."); return (bsdtar->return_value); } static void set_mode(struct bsdtar *bsdtar, char opt) { if (bsdtar->mode != '\0' && bsdtar->mode != opt) lafe_errc(1, 0, "Can't specify both -%c and -%c", opt, bsdtar->mode); bsdtar->mode = opt; } /* * Verify that the mode is correct. */ static void only_mode(struct bsdtar *bsdtar, const char *opt, const char *valid_modes) { if (strchr(valid_modes, bsdtar->mode) == NULL) lafe_errc(1, 0, "Option %s is not permitted in mode -%c", opt, bsdtar->mode); } void usage(void) { const char *p; p = lafe_getprogname(); fprintf(stderr, "Usage:\n"); fprintf(stderr, " List: %s -tf \n", p); fprintf(stderr, " Extract: %s -xf \n", p); fprintf(stderr, " Create: %s -cf [filenames...]\n", p); fprintf(stderr, " Help: %s --help\n", p); exit(1); } static void version(void) { printf("bsdtar %s - %s\n", BSDTAR_VERSION_STRING, archive_version_details()); exit(0); } static const char *long_help_msg = "First option must be a mode specifier:\n" " -c Create -r Add/Replace -t List -u Update -x Extract\n" "Common Options:\n" " -b # Use # 512-byte records per I/O block\n" " -f Location of archive (default " _PATH_DEFTAPE ")\n" " -v Verbose\n" " -w Interactive\n" "Create: %p -c [options] [ | | @ | -C ]\n" " , add these items to archive\n" " -z, -j, -J, --lzma Compress archive with gzip/bzip2/xz/lzma\n" " --format {ustar|pax|cpio|shar} Select archive format\n" " --exclude Skip files that match pattern\n" " -C Change to before processing remaining files\n" " @ Add entries from to output\n" "List: %p -t [options] []\n" " If specified, list only entries that match\n" "Extract: %p -x [options] []\n" " If specified, extract only entries that match\n" " -k Keep (don't overwrite) existing files\n" " -m Don't restore modification times\n" " -O Write entries to stdout, don't restore to disk\n" " -p Restore permissions (including ACLs, owner, file flags)\n"; /* * Note that the word 'bsdtar' will always appear in the first line * of output. * * In particular, /bin/sh scripts that need to test for the presence * of bsdtar can use the following template: * * if (tar --help 2>&1 | grep bsdtar >/dev/null 2>&1 ) then \ * echo bsdtar; else echo not bsdtar; fi */ static void long_help(void) { const char *prog; const char *p; prog = lafe_getprogname(); fflush(stderr); p = (strcmp(prog,"bsdtar") != 0) ? "(bsdtar)" : ""; printf("%s%s: manipulate archive files\n", prog, p); for (p = long_help_msg; *p != '\0'; p++) { if (*p == '%') { if (p[1] == 'p') { fputs(prog, stdout); p++; } else putchar('%'); } else putchar(*p); } version(); }