X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Ftar.c;h=4df7eaa66b0253bb36f9503a3463e8f28b30f1e7;hb=2bda83b48d8a6807632312403561b11b79048443;hp=2cc37b4f34e7fe39f752d40e9a9f7d2a70504f24;hpb=2c4ed788ddc9a74cdd15a32e9684430e68ba862c;p=chaz%2Ftar diff --git a/src/tar.c b/src/tar.c index 2cc37b4..4df7eaa 100644 --- a/src/tar.c +++ b/src/tar.c @@ -1,1504 +1,1595 @@ -/* Tar -- a tape archiver. - Copyright (C) 1988, 1992, 1993 Free Software Foundation - -This file is part of GNU Tar. - -GNU Tar is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Tar is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Tar; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* - * A tar (tape archiver) program. - * - * Written by John Gilmore, ihnp4!hoptoad!gnu, starting 25 Aug 85. - */ - -#include -#include /* Needed for typedefs in tar.h */ -#include "getopt.h" -#include "regex.h" - -/* - * The following causes "tar.h" to produce definitions of all the - * global variables, rather than just "extern" declarations of them. - */ -#define TAR_EXTERN /**/ -#include "tar.h" - -#include "port.h" -#include "fnmatch.h" - -/* - * We should use a conversion routine that does reasonable error - * checking -- atoi doesn't. For now, punt. FIXME. - */ -#define intconv atoi -PTR ck_malloc (); -PTR ck_realloc (); -extern int getoldopt (); -extern void read_and (); -extern void list_archive (); -extern void extract_archive (); -extern void diff_archive (); -extern void create_archive (); -extern void update_archive (); -extern void junk_archive (); -extern void init_volume_number (); -extern void closeout_volume_number (); - -/* JF */ -extern time_t get_date (); - -time_t new_time; - -static FILE *namef; /* File to read names from */ -static char **n_argv; /* Argv used by name routines */ -static int n_argc; /* Argc used by name routines */ -static char **n_ind; /* Store an array of names */ -static int n_indalloc; /* How big is the array? */ -static int n_indused; /* How many entries does it have? */ -static int n_indscan; /* How many of the entries have we scanned? */ - - -extern FILE *msg_file; - -int check_exclude (); -void add_exclude (); -void add_exclude_file (); -void addname (); -void describe (); -void diff_init (); -void extr_init (); -int is_regex (); -void name_add (); -void name_init (); -void options (); -char *un_quote_string (); - -#ifndef S_ISLNK -#define lstat stat +/* A tar (tape archiver) program. + + Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, + 2001, 2003, 2004 Free Software Foundation, Inc. + + Written by John Gilmore, starting 1985-08-25. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 2, or (at your option) any later + version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General + Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "system.h" + +#include +#include + +#include +#if ! defined SIGCHLD && defined SIGCLD +# define SIGCHLD SIGCLD #endif -#ifndef DEFBLOCKING -#define DEFBLOCKING 20 +/* The following causes "common.h" to produce definitions of all the global + variables, rather than just "extern" declarations of them. GNU tar does + depend on the system loader to preset all GLOBAL variables to neutral (or + zero) values; explicit initialization is usually not done. */ +#define GLOBAL +#include "common.h" + +#include +#include +#include +#include +#include + +/* Local declarations. */ + +#ifndef DEFAULT_ARCHIVE_FORMAT +# define DEFAULT_ARCHIVE_FORMAT GNU_FORMAT #endif -#ifndef DEF_AR_FILE -#define DEF_AR_FILE "tar.out" +#ifndef DEFAULT_ARCHIVE +# define DEFAULT_ARCHIVE "tar.out" #endif +#ifndef DEFAULT_BLOCKING +# define DEFAULT_BLOCKING 20 +#endif + + +/* Miscellaneous. */ + +/* Name of option using stdin. */ +static const char *stdin_used_by; + +/* Doesn't return if stdin already requested. */ +void +request_stdin (const char *option) +{ + if (stdin_used_by) + USAGE_ERROR ((0, 0, _("Options `-%s' and `-%s' both want standard input"), + stdin_used_by, option)); + + stdin_used_by = option; +} + +/* Returns true if and only if the user typed 'y' or 'Y'. */ +int +confirm (const char *message_action, const char *message_name) +{ + static FILE *confirm_file; + static int confirm_file_EOF; + + if (!confirm_file) + { + if (archive == 0 || stdin_used_by) + { + confirm_file = fopen (TTY_NAME, "r"); + if (! confirm_file) + open_fatal (TTY_NAME); + } + else + { + request_stdin ("-w"); + confirm_file = stdin; + } + } + + fprintf (stdlis, "%s %s?", message_action, quote (message_name)); + fflush (stdlis); + + { + int reply = confirm_file_EOF ? EOF : getc (confirm_file); + int character; + + for (character = reply; + character != '\n'; + character = getc (confirm_file)) + if (character == EOF) + { + confirm_file_EOF = 1; + fputc ('\n', stdlis); + fflush (stdlis); + break; + } + return reply == 'y' || reply == 'Y'; + } +} + +static struct fmttab { + char const *name; + enum archive_format fmt; +} const fmttab[] = { + { "v7", V7_FORMAT }, + { "oldgnu", OLDGNU_FORMAT }, + { "ustar", USTAR_FORMAT }, + { "posix", POSIX_FORMAT }, +#if 0 /* not fully supported yet */ + { "star", STAR_FORMAT }, +#endif + { "gnu", GNU_FORMAT }, + { NULL, 0 } +}; + +static void +set_archive_format (char const *name) +{ + struct fmttab const *p; + + for (p = fmttab; strcmp (p->name, name) != 0; ) + if (! (++p)->name) + USAGE_ERROR ((0, 0, _("%s: Invalid archive format"), + quotearg_colon (name))); + + archive_format = p->fmt; +} + +static const char * +archive_format_string (enum archive_format fmt) +{ + struct fmttab const *p; + + for (p = fmttab; p->name; p++) + if (p->fmt == fmt) + return p->name; + return "unknown?"; +} + +#define FORMAT_MASK(n) (1<<(n)) + +static void +assert_format(unsigned fmt_mask) +{ + if ((FORMAT_MASK(archive_format) & fmt_mask) == 0) + USAGE_ERROR ((0, 0, + _("GNU features wanted on incompatible archive format"))); +} + + + +/* Options. */ + /* For long options that unconditionally set a single flag, we have getopt do it. For the others, we share the code for the equivalent short named option, the name of which is stored in the otherwise-unused `val' field of the `struct option'; for long options that have no equivalent - short option, we use nongraphic characters as pseudo short option - characters, starting (for no particular reason) with character 10. */ + short option, we use non-characters as pseudo short options, + starting at CHAR_MAX + 1 and going upwards. */ -struct option long_options[] = +enum { - {"create", 0, 0, 'c'}, - {"append", 0, 0, 'r'}, - {"extract", 0, 0, 'x'}, - {"get", 0, 0, 'x'}, - {"list", 0, 0, 't'}, - {"update", 0, 0, 'u'}, - {"catenate", 0, 0, 'A'}, - {"concatenate", 0, 0, 'A'}, - {"compare", 0, 0, 'd'}, - {"diff", 0, 0, 'd'}, - {"delete", 0, 0, 14}, - {"help", 0, 0, 12}, - - {"null", 0, 0, 16}, - {"directory", 1, 0, 'C'}, - {"record-number", 0, &f_sayblock, 1}, - {"files-from", 1, 0, 'T'}, - {"label", 1, 0, 'V'}, - {"exclude-from", 1, 0, 'X'}, - {"exclude", 1, 0, 15}, - {"file", 1, 0, 'f'}, - {"block-size", 1, 0, 'b'}, - {"version", 0, 0, 11}, - {"verbose", 0, 0, 'v'}, - {"totals", 0, &f_totals, 1}, - - {"read-full-blocks", 0, &f_reblock, 1}, - {"starting-file", 1, 0, 'K'}, - {"to-stdout", 0, &f_exstdout, 1}, - {"ignore-zeros", 0, &f_ignorez, 1}, - {"keep-old-files", 0, 0, 'k'}, - {"same-permissions", 0, &f_use_protection, 1}, - {"preserve-permissions", 0, &f_use_protection, 1}, - {"modification-time", 0, &f_modified, 1}, - {"preserve", 0, 0, 10}, - {"same-order", 0, &f_sorted_names, 1}, - {"same-owner", 0, &f_do_chown, 1}, - {"preserve-order", 0, &f_sorted_names, 1}, - - {"newer", 1, 0, 'N'}, - {"after-date", 1, 0, 'N'}, - {"newer-mtime", 1, 0, 13}, - {"incremental", 0, 0, 'G'}, - {"listed-incremental", 1, 0, 'g'}, - {"multi-volume", 0, &f_multivol, 1}, - {"info-script", 1, 0, 'F'}, - {"new-volume-script", 1, 0, 'F'}, - {"absolute-paths", 0, &f_absolute_paths, 1}, - {"interactive", 0, &f_confirm, 1}, - {"confirmation", 0, &f_confirm, 1}, - - {"verify", 0, &f_verify, 1}, - {"dereference", 0, &f_follow_links, 1}, - {"one-file-system", 0, &f_local_filesys, 1}, - {"old-archive", 0, 0, 'o'}, - {"portability", 0, 0, 'o'}, - {"compress", 0, 0, 'Z'}, - {"uncompress", 0, 0, 'Z'}, - {"block-compress", 0, &f_compress_block, 1}, - {"gzip", 0, 0, 'z'}, - {"ungzip", 0, 0, 'z'}, - {"use-compress-program", 1, 0, 18}, - - - {"same-permissions", 0, &f_use_protection, 1}, - {"sparse", 0, &f_sparse_files, 1}, - {"tape-length", 1, 0, 'L'}, - {"remove-files", 0, &f_remove_files, 1}, - {"ignore-failed-read", 0, &f_ignore_failed_read, 1}, - {"checkpoint", 0, &f_checkpoint, 1}, - {"show-omitted-dirs", 0, &f_show_omitted_dirs, 1}, - {"volno-file", 1, 0, 17}, - {"force-local", 0, &f_force_local, 1}, - {"atime-preserve", 0, &f_atime_preserve, 1}, + ANCHORED_OPTION = CHAR_MAX + 1, + ATIME_PRESERVE_OPTION, + BACKUP_OPTION, + CHECKPOINT_OPTION, + DELETE_OPTION, + EXCLUDE_OPTION, + FORCE_LOCAL_OPTION, + FORMAT_OPTION, + GROUP_OPTION, + IGNORE_CASE_OPTION, + IGNORE_FAILED_READ_OPTION, + INDEX_FILE_OPTION, + KEEP_NEWER_FILES_OPTION, + MODE_OPTION, + NEWER_MTIME_OPTION, + NO_ANCHORED_OPTION, + NO_IGNORE_CASE_OPTION, + NO_OVERWRITE_DIR_OPTION, + NO_WILDCARDS_OPTION, + NO_WILDCARDS_MATCH_SLASH_OPTION, + NULL_OPTION, + NUMERIC_OWNER_OPTION, + OCCURRENCE_OPTION, + OVERWRITE_OPTION, + OWNER_OPTION, + PAX_OPTION, + POSIX_OPTION, + PRESERVE_OPTION, + RECORD_SIZE_OPTION, + RECURSIVE_UNLINK_OPTION, + REMOVE_FILES_OPTION, + RSH_COMMAND_OPTION, + SHOW_DEFAULTS_OPTION, + SHOW_OMITTED_DIRS_OPTION, + STRIP_PATH_OPTION, + SUFFIX_OPTION, + TOTALS_OPTION, + USE_COMPRESS_PROGRAM_OPTION, + UTC_OPTION, + VOLNO_FILE_OPTION, + WILDCARDS_OPTION, + WILDCARDS_MATCH_SLASH_OPTION +}; + +/* If nonzero, display usage information and exit. */ +static int show_help; + +/* If nonzero, print the version on standard output and exit. */ +static int show_version; + +static struct option long_options[] = +{ + {"absolute-names", no_argument, 0, 'P'}, + {"after-date", required_argument, 0, 'N'}, + {"anchored", no_argument, 0, ANCHORED_OPTION}, + {"append", no_argument, 0, 'r'}, + {"atime-preserve", no_argument, 0, ATIME_PRESERVE_OPTION}, + {"backup", optional_argument, 0, BACKUP_OPTION}, + {"block-number", no_argument, 0, 'R'}, + {"blocking-factor", required_argument, 0, 'b'}, + {"bzip2", no_argument, 0, 'j'}, + {"catenate", no_argument, 0, 'A'}, + {"checkpoint", no_argument, 0, CHECKPOINT_OPTION}, + {"check-links", no_argument, &check_links_option, 1}, + {"compare", no_argument, 0, 'd'}, + {"compress", no_argument, 0, 'Z'}, + {"concatenate", no_argument, 0, 'A'}, + {"confirmation", no_argument, 0, 'w'}, + /* FIXME: --selective as a synonym for --confirmation? */ + {"create", no_argument, 0, 'c'}, + {"delete", no_argument, 0, DELETE_OPTION}, + {"dereference", no_argument, 0, 'h'}, + {"diff", no_argument, 0, 'd'}, + {"directory", required_argument, 0, 'C'}, + {"exclude", required_argument, 0, EXCLUDE_OPTION}, + {"exclude-from", required_argument, 0, 'X'}, + {"extract", no_argument, 0, 'x'}, + {"file", required_argument, 0, 'f'}, + {"files-from", required_argument, 0, 'T'}, + {"force-local", no_argument, 0, FORCE_LOCAL_OPTION}, + {"format", required_argument, 0, FORMAT_OPTION}, + {"get", no_argument, 0, 'x'}, + {"group", required_argument, 0, GROUP_OPTION}, + {"gunzip", no_argument, 0, 'z'}, + {"gzip", no_argument, 0, 'z'}, + {"help", no_argument, &show_help, 1}, + {"ignore-case", no_argument, 0, IGNORE_CASE_OPTION}, + {"ignore-failed-read", no_argument, 0, IGNORE_FAILED_READ_OPTION}, + {"ignore-zeros", no_argument, 0, 'i'}, + /* FIXME: --ignore-end as a new name for --ignore-zeros? */ + {"incremental", no_argument, 0, 'G'}, + {"index-file", required_argument, 0, INDEX_FILE_OPTION}, + {"info-script", required_argument, 0, 'F'}, + {"interactive", no_argument, 0, 'w'}, + {"keep-newer-files", no_argument, 0, KEEP_NEWER_FILES_OPTION}, + {"keep-old-files", no_argument, 0, 'k'}, + {"label", required_argument, 0, 'V'}, + {"list", no_argument, 0, 't'}, + {"listed-incremental", required_argument, 0, 'g'}, + {"mode", required_argument, 0, MODE_OPTION}, + {"multi-volume", no_argument, 0, 'M'}, + {"new-volume-script", required_argument, 0, 'F'}, + {"newer", required_argument, 0, 'N'}, + {"newer-mtime", required_argument, 0, NEWER_MTIME_OPTION}, + {"null", no_argument, 0, NULL_OPTION}, + {"no-anchored", no_argument, 0, NO_ANCHORED_OPTION}, + {"no-ignore-case", no_argument, 0, NO_IGNORE_CASE_OPTION}, + {"no-overwrite-dir", no_argument, 0, NO_OVERWRITE_DIR_OPTION}, + {"no-wildcards", no_argument, 0, NO_WILDCARDS_OPTION}, + {"no-wildcards-match-slash", no_argument, 0, NO_WILDCARDS_MATCH_SLASH_OPTION}, + {"no-recursion", no_argument, &recursion_option, 0}, + {"no-same-owner", no_argument, &same_owner_option, -1}, + {"no-same-permissions", no_argument, &same_permissions_option, -1}, + {"numeric-owner", no_argument, 0, NUMERIC_OWNER_OPTION}, + {"occurrence", optional_argument, 0, OCCURRENCE_OPTION}, + {"old-archive", no_argument, 0, 'o'}, + {"one-file-system", no_argument, 0, 'l'}, + {"overwrite", no_argument, 0, OVERWRITE_OPTION}, + {"owner", required_argument, 0, OWNER_OPTION}, + {"pax-option", required_argument, 0, PAX_OPTION}, + {"portability", no_argument, 0, 'o'}, + {"posix", no_argument, 0, POSIX_OPTION}, + {"preserve", no_argument, 0, PRESERVE_OPTION}, + {"preserve-order", no_argument, 0, 's'}, + {"preserve-permissions", no_argument, 0, 'p'}, + {"recursion", no_argument, &recursion_option, FNM_LEADING_DIR}, + {"recursive-unlink", no_argument, 0, RECURSIVE_UNLINK_OPTION}, + {"read-full-records", no_argument, 0, 'B'}, + /* FIXME: --partial-blocks might be a synonym for --read-full-records? */ + {"record-size", required_argument, 0, RECORD_SIZE_OPTION}, + {"remove-files", no_argument, 0, REMOVE_FILES_OPTION}, + {"rsh-command", required_argument, 0, RSH_COMMAND_OPTION}, + {"same-order", no_argument, 0, 's'}, + {"same-owner", no_argument, &same_owner_option, 1}, + {"same-permissions", no_argument, 0, 'p'}, + {"show-defaults", no_argument, 0, SHOW_DEFAULTS_OPTION}, + {"show-omitted-dirs", no_argument, 0, SHOW_OMITTED_DIRS_OPTION}, + {"sparse", no_argument, 0, 'S'}, + {"starting-file", required_argument, 0, 'K'}, + {"strip-path", required_argument, 0, STRIP_PATH_OPTION }, + {"suffix", required_argument, 0, SUFFIX_OPTION}, + {"tape-length", required_argument, 0, 'L'}, + {"to-stdout", no_argument, 0, 'O'}, + {"totals", no_argument, 0, TOTALS_OPTION}, + {"touch", no_argument, 0, 'm'}, + {"uncompress", no_argument, 0, 'Z'}, + {"ungzip", no_argument, 0, 'z'}, + {"unlink-first", no_argument, 0, 'U'}, + {"update", no_argument, 0, 'u'}, + {"utc", no_argument, 0, UTC_OPTION }, + {"use-compress-program", required_argument, 0, USE_COMPRESS_PROGRAM_OPTION}, + {"verbose", no_argument, 0, 'v'}, + {"verify", no_argument, 0, 'W'}, + {"version", no_argument, &show_version, 1}, + {"volno-file", required_argument, 0, VOLNO_FILE_OPTION}, + {"wildcards", no_argument, 0, WILDCARDS_OPTION}, + {"wildcards-match-slash", no_argument, 0, WILDCARDS_MATCH_SLASH_OPTION}, {0, 0, 0, 0} }; -/* - * Main routine for tar. - */ +/* Print a usage message and exit with STATUS. */ void -main (argc, argv) - int argc; - char **argv; +usage (int status) { - extern char version_string[]; + if (status != TAREXIT_SUCCESS) + fprintf (stderr, _("Try `%s --help' for more information.\n"), + program_name); + else + { + fputs (_("\ +GNU `tar' saves many files together into a single tape or disk archive, and\n\ +can restore individual files from the archive.\n"), + stdout); + printf (_("\nUsage: %s [OPTION]... [FILE]...\n\ +\n\ +Examples:\n\ + %s -cf archive.tar foo bar # Create archive.tar from files foo and bar.\n\ + %s -tvf archive.tar # List all files in archive.tar verbosely.\n\ + %s -xf archive.tar # Extract all files from archive.tar.\n"), + program_name, program_name, program_name, program_name); + fputs (_("\ +\n\ +If a long option shows an argument as mandatory, then it is mandatory\n\ +for the equivalent short option also. Similarly for optional arguments.\n"), + stdout); + fputs(_("\ +\n\ +Main operation mode:\n\ + -t, --list list the contents of an archive\n\ + -x, --extract, --get extract files from an archive\n\ + -c, --create create a new archive\n\ + -d, --diff, --compare find differences between archive and file system\n\ + -r, --append append files to the end of an archive\n\ + -u, --update only append files newer than copy in archive\n\ + -A, --catenate append tar files to an archive\n\ + --concatenate same as -A\n\ + --delete delete from the archive (not on mag tapes!)\n"), + stdout); + fputs (_("\ +\n\ +Operation modifiers:\n\ + -W, --verify attempt to verify the archive after writing it\n\ + --remove-files remove files after adding them to the archive\n\ + -k, --keep-old-files don't replace existing files when extracting\n\ + --keep-newer-files don't replace existing files that are newer\n\ + than their archive copies\n\ + --overwrite overwrite existing files when extracting\n\ + --no-overwrite-dir preserve metadata of existing directories\n\ + -U, --unlink-first remove each file prior to extracting over it\n\ + --recursive-unlink empty hierarchies prior to extracting directory\n\ + -S, --sparse handle sparse files efficiently\n\ + -O, --to-stdout extract files to standard output\n\ + -G, --incremental handle old GNU-format incremental backup\n\ + -g, --listed-incremental=FILE\n\ + handle new GNU-format incremental backup\n\ + --ignore-failed-read do not exit with nonzero on unreadable files\n\ + --occurrence[=NUM] process only the NUMth occurrence of each file in\n\ + the archive. This option is valid only in\n\ + conjunction with one of the subcommands --delete,\n\ + --diff, --extract or --list and when a list of\n\ + files is given either on the command line or\n\ + via -T option.\n\ + NUM defaults to 1.\n"), + stdout); + fputs (_("\ +\n\ +Handling of file attributes:\n\ + --owner=NAME force NAME as owner for added files\n\ + --group=NAME force NAME as group for added files\n\ + --mode=CHANGES force (symbolic) mode CHANGES for added files\n\ + --atime-preserve don't change access times on dumped files\n\ + -m, --modification-time don't extract file modified time\n\ + --same-owner try extracting files with the same ownership\n\ + --no-same-owner extract files as yourself\n\ + --numeric-owner always use numbers for user/group names\n\ + -p, --same-permissions extract permissions information\n\ + --no-same-permissions do not extract permissions information\n\ + --preserve-permissions same as -p\n\ + -s, --same-order sort names to extract to match archive\n\ + --preserve-order same as -s\n\ + --preserve same as both -p and -s\n"), + stdout); + fputs (_("\ +\n\ +Device selection and switching:\n\ + -f, --file=ARCHIVE use archive file or device ARCHIVE\n\ + --force-local archive file is local even if has a colon\n\ + --rsh-command=COMMAND use remote COMMAND instead of rsh\n\ + -[0-7][lmh] specify drive and density\n\ + -M, --multi-volume create/list/extract multi-volume archive\n\ + -L, --tape-length=NUM change tape after writing NUM x 1024 bytes\n\ + -F, --info-script=FILE run script at end of each tape (implies -M)\n\ + --new-volume-script=FILE same as -F FILE\n\ + --volno-file=FILE use/update the volume number in FILE\n"), + stdout); + fputs (_("\ +\n\ +Device blocking:\n\ + -b, --blocking-factor=BLOCKS BLOCKS x 512 bytes per record\n\ + --record-size=SIZE SIZE bytes per record, multiple of 512\n\ + -i, --ignore-zeros ignore zeroed blocks in archive (means EOF)\n\ + -B, --read-full-records reblock as we read (for 4.2BSD pipes)\n"), + stdout); + fputs (_("\ +\n\ +Archive format selection:\n\ + --format=FMTNAME create archive of the given format.\n\ + FMTNAME is one of the following:\n\ + v7 old V7 tar format\n\ + oldgnu GNU format as per tar <= 1.12\n\ + gnu GNU tar 1.13 format\n\ + ustar POSIX 1003.1-1988 (ustar) format\n\ + posix POSIX 1003.1-2001 (pax) format\n\ + --old-archive, --portability same as --format=v7\n\ + --posix same as --format=posix\n\ + --pax-option keyword[[:]=value][,keyword[[:]=value], ...]\n\ + control pax keywords\n\ + -V, --label=NAME create archive with volume name NAME\n\ + PATTERN at list/extract time, a globbing PATTERN\n\ + -j, --bzip2 filter the archive through bzip2\n\ + -z, --gzip, --ungzip filter the archive through gzip\n\ + -Z, --compress, --uncompress filter the archive through compress\n\ + --use-compress-program=PROG filter through PROG (must accept -d)\n"), + stdout); + fputs (_("\ +\n\ +Local file selection:\n\ + -C, --directory=DIR change to directory DIR\n\ + -T, --files-from=NAME get names to extract or create from file NAME\n\ + --null -T reads null-terminated names, disable -C\n\ + --exclude=PATTERN exclude files, given as a PATTERN\n\ + -X, --exclude-from=FILE exclude patterns listed in FILE\n\ + --anchored exclude patterns match file name start (default)\n\ + --no-anchored exclude patterns match after any /\n\ + --ignore-case exclusion ignores case\n\ + --no-ignore-case exclusion is case sensitive (default)\n\ + --wildcards exclude patterns use wildcards (default)\n\ + --no-wildcards exclude patterns are plain strings\n\ + --wildcards-match-slash exclude pattern wildcards match '/' (default)\n\ + --no-wildcards-match-slash exclude pattern wildcards do not match '/'\n\ + -P, --absolute-names don't strip leading `/'s from file names\n\ + -h, --dereference dump instead the files symlinks point to\n\ + --no-recursion avoid descending automatically in directories\n\ + -l, --one-file-system stay in local file system when creating archive\n\ + -K, --starting-file=NAME begin at file NAME in the archive\n\ + --strip-path=NUM strip NUM leading components from file names\n\ + before extraction\n"), + stdout); +#if !MSDOS + fputs (_("\ + -N, --newer=DATE-OR-FILE only store files newer than DATE-OR-FILE\n\ + --newer-mtime=DATE compare date and time when data changed only\n\ + --after-date=DATE same as -N\n"), + stdout); +#endif + fputs (_("\ + --backup[=CONTROL] backup before removal, choose version control\n\ + --suffix=SUFFIX backup before removal, override usual suffix\n"), + stdout); + fputs (_("\ +\n\ +Informative output:\n\ + --help print this help, then exit\n\ + --version print tar program version number, then exit\n\ + -v, --verbose verbosely list files processed\n\ + --checkpoint print directory names while reading the archive\n\ + --check-links print a message if not all links are dumped\n\ + --totals print total bytes written while creating archive\n\ + --index-file=FILE send verbose output to FILE\n\ + --utc print file modification dates in UTC\n\ + -R, --block-number show block number within archive with each message\n\ + -w, --interactive ask for confirmation for every action\n\ + --confirmation same as -w\n"), + stdout); + fputs (_("\ +\n\ +Compatibility options:\n\ + -o when creating, same as --old-archive\n\ + when extracting, same as --no-same-owner\n"), + stdout); + + fputs (_("\ +\n\ +The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\ +The version control may be set with --backup or VERSION_CONTROL, values are:\n\ +\n\ + t, numbered make numbered backups\n\ + nil, existing numbered if numbered backups exist, simple otherwise\n\ + never, simple always make simple backups\n"), + stdout); + printf (_("\ +\n\ +ARCHIVE may be FILE, HOST:FILE or USER@HOST:FILE; DATE may be a textual date\n\ +or a file name starting with `/' or `.', in which case the file's date is used.\n\ +*This* `tar' defaults to `--format=%s -f%s -b%d'.\n"), + archive_format_string (DEFAULT_ARCHIVE_FORMAT), + DEFAULT_ARCHIVE, DEFAULT_BLOCKING); + printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT); + } + exit (status); +} - tar = argv[0]; /* JF: was "tar" Set program name */ - filename_terminator = '\n'; - errors = 0; +/* Parse the options for tar. */ - options (argc, argv); +/* Available option letters are DEHIJQY and aenqy. Some are reserved: - if (!n_argv) - name_init (argc, argv); + e exit immediately with a nonzero exit status if unexpected errors occur + E use extended headers (draft POSIX headers, that is) + I same as T (for compatibility with Solaris tar) + n the archive is quickly seekable, so don't worry about random seeks + q stop after extracting the first occurrence of the named file + y per-file gzip compression + Y per-block gzip compression */ - if (f_volno_file) - init_volume_number (); +#define OPTION_STRING \ + "-01234567ABC:F:GIK:L:MN:OPRST:UV:WX:Zb:cdf:g:hijklmoprstuvwxyz" - switch (cmd_mode) - { - case CMD_CAT: - case CMD_UPDATE: - case CMD_APPEND: - update_archive (); - break; - case CMD_DELETE: - junk_archive (); - break; - case CMD_CREATE: - create_archive (); - if (f_totals) - fprintf (stderr, "Total bytes written: %d\n", tot_written); - break; - case CMD_EXTRACT: - if (f_volhdr) - { - const char *err; - label_pattern = (struct re_pattern_buffer *) - ck_malloc (sizeof *label_pattern); - err = re_compile_pattern (f_volhdr, strlen (f_volhdr), - label_pattern); - if (err) - { - fprintf (stderr, "Bad regular expression: %s\n", - err); - errors++; - break; - } +static void +set_subcommand_option (enum subcommand subcommand) +{ + if (subcommand_option != UNKNOWN_SUBCOMMAND + && subcommand_option != subcommand) + USAGE_ERROR ((0, 0, + _("You may not specify more than one `-Acdtrux' option"))); - } - extr_init (); - read_and (extract_archive); - break; - case CMD_LIST: - if (f_volhdr) - { - const char *err; - label_pattern = (struct re_pattern_buffer *) - ck_malloc (sizeof *label_pattern); - err = re_compile_pattern (f_volhdr, strlen (f_volhdr), - label_pattern); - if (err) - { - fprintf (stderr, "Bad regular expression: %s\n", - err); - errors++; - break; - } - } - read_and (list_archive); -#if 0 - if (!errors) - errors = different; -#endif - break; - case CMD_DIFF: - diff_init (); - read_and (diff_archive); - break; - case CMD_VERSION: - fprintf (stderr, "%s\n", version_string); - break; - case CMD_NONE: - msg ("you must specify exactly one of the r, c, t, x, or d options\n"); - fprintf (stderr, "For more information, type ``%s --help''.\n", tar); - exit (EX_ARGSBAD); - } - if (f_volno_file) - closeout_volume_number (); - exit (errors); - /* NOTREACHED */ + subcommand_option = subcommand; } +static void +set_use_compress_program_option (const char *string) +{ + if (use_compress_program_option && strcmp (use_compress_program_option, string) != 0) + USAGE_ERROR ((0, 0, _("Conflicting compression options"))); -/* - * Parse the options for tar. - */ -void -options (argc, argv) - int argc; - char **argv; + use_compress_program_option = string; +} + +static void +decode_options (int argc, char **argv) { - register int c; /* Option letter */ - int ind = -1; - - /* Set default option values */ - blocking = DEFBLOCKING; /* From Makefile */ - ar_files = (char **) ck_malloc (sizeof (char *) * 10); - ar_files_len = 10; - n_ar_files = 0; - cur_ar_file = 0; - - /* Parse options */ - while ((c = getoldopt (argc, argv, - "-01234567Ab:BcC:df:F:g:GhikK:lL:mMN:oOpPrRsStT:uvV:wWxX:zZ", - long_options, &ind)) != EOF) + int optchar; /* option letter */ + int input_files; /* number of input files */ + char const *textual_date_option = 0; + char const *backup_suffix_string; + char const *version_control_string = 0; + int exclude_options = EXCLUDE_WILDCARDS; + bool o_option = 0; + int pax_option = 0; + + /* Set some default option values. */ + + subcommand_option = UNKNOWN_SUBCOMMAND; + archive_format = DEFAULT_FORMAT; + blocking_factor = DEFAULT_BLOCKING; + record_size = DEFAULT_BLOCKING * BLOCKSIZE; + excluded = new_exclude (); + newer_mtime_option.tv_sec = TYPE_MINIMUM (time_t); + newer_mtime_option.tv_nsec = -1; + recursion_option = FNM_LEADING_DIR; + + owner_option = -1; + group_option = -1; + + backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX"); + + /* Convert old-style tar call by exploding option element and rearranging + options accordingly. */ + + if (argc > 1 && argv[1][0] != '-') { - switch (c) - { - case 0: /* long options that set a single flag */ - break; - case 1: - /* File name or non-parsed option */ - name_add (optarg); - break; - case 'C': - name_add ("-C"); - name_add (optarg); - break; - case 10: /* preserve */ - f_use_protection = f_sorted_names = 1; - break; - case 11: - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_VERSION; - break; - case 12: /* help */ - printf ("This is GNU tar, the tape archiving program.\n"); - describe (); - exit (1); - case 13: - f_new_files++; - goto get_newer; - - case 14: /* Delete in the archive */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_DELETE; - break; + int new_argc; /* argc value for rearranged arguments */ + char **new_argv; /* argv value for rearranged arguments */ + char *const *in; /* cursor into original argv */ + char **out; /* cursor into rearranged argv */ + const char *letter; /* cursor into old option letters */ + char buffer[3]; /* constructed option buffer */ + const char *cursor; /* cursor in OPTION_STRING */ - case 15: - f_exclude++; - add_exclude (optarg); - break; + /* Initialize a constructed option. */ - case 16: /* -T reads null terminated filenames. */ - filename_terminator = '\0'; - break; + buffer[0] = '-'; + buffer[2] = '\0'; - case 17: - f_volno_file = optarg; - break; + /* Allocate a new argument array, and copy program name in it. */ - case 18: - if (f_compressprog) + new_argc = argc - 1 + strlen (argv[1]); + new_argv = xmalloc ((new_argc + 1) * sizeof (char *)); + in = argv; + out = new_argv; + *out++ = *in++; + + /* Copy each old letter option as a separate option, and have the + corresponding argument moved next to it. */ + + for (letter = *in++; *letter; letter++) + { + buffer[1] = *letter; + *out++ = xstrdup (buffer); + cursor = strchr (OPTION_STRING, *letter); + if (cursor && cursor[1] == ':') { - msg ("Only one compression option permitted\n"); - exit (EX_ARGSBAD); + if (in < argv + argc) + *out++ = *in++; + else + USAGE_ERROR ((0, 0, _("Old option `%c' requires an argument."), + *letter)); } - f_compressprog = optarg; - break; + } - case 'g': /* We are making a GNU dump; save - directories at the beginning of - the archive, and include in each - directory its contents */ - if (f_oldarch) - goto badopt; - f_gnudump++; - gnu_dumpfile = optarg; - break; + /* Copy all remaining options. */ + while (in < argv + argc) + *out++ = *in++; + *out = 0; - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - { - /* JF this'll have to be modified for other - systems, of course! */ - int d, add; - static char buf[50]; - - d = getoldopt (argc, argv, "lmh"); -#ifdef MAYBEDEF - sprintf (buf, "/dev/rmt/%d%c", c, d); -#else -#ifndef LOW_NUM -#define LOW_NUM 0 -#define MID_NUM 8 -#define HGH_NUM 16 -#endif - if (d == 'l') - add = LOW_NUM; - else if (d == 'm') - add = MID_NUM; - else if (d == 'h') - add = HGH_NUM; - else - goto badopt; + /* Replace the old option list by the new one. */ - sprintf (buf, "/dev/rmt%d", add + c - '0'); -#endif - if (n_ar_files == ar_files_len) - ar_files - = (char **) - ck_malloc (sizeof (char *) - * (ar_files_len *= 2)); - ar_files[n_ar_files++] = buf; - } - break; + argc = new_argc; + argv = new_argv; + } - case 'A': /* Arguments are tar files, - just cat them onto the end - of the archive. */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_CAT; - break; + /* Parse all options and non-options as they appear. */ - case 'b': /* Set blocking factor */ - blocking = intconv (optarg); - break; + input_files = 0; - case 'B': /* Try to reblock input */ - f_reblock++; /* For reading 4.2BSD pipes */ - break; + prepend_default_options (getenv ("TAR_OPTIONS"), &argc, &argv); - case 'c': /* Create an archive */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_CREATE; - break; + while (optchar = getopt_long (argc, argv, OPTION_STRING, long_options, 0), + optchar != -1) + switch (optchar) + { + case '?': + usage (TAREXIT_FAILURE); -#if 0 - case 'C': - if (chdir (optarg) < 0) - msg_perror ("Can't change directory to %d", optarg); - break; -#endif + case 0: + break; - case 'd': /* Find difference tape/disk */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_DIFF; - break; + case 1: + /* File name or non-parsed option, because of RETURN_IN_ORDER + ordering triggered by the leading dash in OPTION_STRING. */ - case 'f': /* Use ar_file for the archive */ - if (n_ar_files == ar_files_len) - ar_files - = (char **) ck_malloc (sizeof (char *) - * (ar_files_len *= 2)); + name_add (optarg); + input_files++; + break; - ar_files[n_ar_files++] = optarg; - break; + case 'A': + set_subcommand_option (CAT_SUBCOMMAND); + break; - case 'F': - /* Since -F is only useful with -M , make it implied */ - f_run_script_at_end++;/* run this script at the end */ - info_script = optarg; /* of each tape */ - f_multivol++; - break; + case 'b': + { + uintmax_t u; + if (! (xstrtoumax (optarg, 0, 10, &u, "") == LONGINT_OK + && u == (blocking_factor = u) + && 0 < blocking_factor + && u == (record_size = u * BLOCKSIZE) / BLOCKSIZE)) + USAGE_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("Invalid blocking factor"))); + } + break; - case 'G': /* We are making a GNU dump; save - directories at the beginning of - the archive, and include in each - directory its contents */ - if (f_oldarch) - goto badopt; - f_gnudump++; - gnu_dumpfile = 0; - break; + case 'B': + /* Try to reblock input records. For reading 4.2BSD pipes. */ - case 'h': - f_follow_links++; /* follow symbolic links */ - break; + /* It would surely make sense to exchange -B and -R, but it seems + that -B has been used for a long while in Sun tar ans most + BSD-derived systems. This is a consequence of the block/record + terminology confusion. */ - case 'i': - f_ignorez++; /* Ignore zero records (eofs) */ - /* - * This can't be the default, because Unix tar - * writes two records of zeros, then pads out the - * block with garbage. - */ - break; + read_full_records_option = true; + break; - case 'k': /* Don't overwrite files */ -#ifdef NO_OPEN3 - msg ("can't keep old files on this system"); - exit (EX_ARGSBAD); -#else - f_keep++; -#endif - break; + case 'c': + set_subcommand_option (CREATE_SUBCOMMAND); + break; - case 'K': - f_startfile++; - addname (optarg); - break; + case 'C': + name_add ("-C"); + name_add (optarg); + break; - case 'l': /* When dumping directories, don't - dump files/subdirectories that are - on other filesystems. */ - f_local_filesys++; - break; + case 'd': + set_subcommand_option (DIFF_SUBCOMMAND); + break; - case 'L': - tape_length = intconv (optarg); - f_multivol++; - break; - case 'm': - f_modified++; - break; + case 'f': + if (archive_names == allocated_archive_names) + { + allocated_archive_names *= 2; + archive_name_array = + xrealloc (archive_name_array, + sizeof (const char *) * allocated_archive_names); + } + archive_name_array[archive_names++] = optarg; + break; + + case 'F': + /* Since -F is only useful with -M, make it implied. Run this + script at the end of each tape. */ + + info_script_option = optarg; + multi_volume_option = true; + break; + + case 'g': + listed_incremental_option = optarg; + after_date_option = true; + /* Fall through. */ + + case 'G': + /* We are making an incremental dump (FIXME: are we?); save + directories at the beginning of the archive, and include in each + directory its contents. */ + + incremental_option = true; + break; + + case 'h': + /* Follow symbolic links. */ + dereference_option = true; + break; + + case 'i': + /* Ignore zero blocks (eofs). This can't be the default, + because Unix tar writes two blocks of zeros, then pads out + the record with garbage. */ + + ignore_zeros_option = true; + break; + + case 'I': + USAGE_ERROR ((0, 0, + _("Warning: the -I option is not supported;" + " perhaps you meant -j or -T?"))); + break; + + case 'j': + set_use_compress_program_option ("bzip2"); + break; + + case 'k': + /* Don't replace existing files. */ + old_files_option = KEEP_OLD_FILES; + break; + + case 'K': + starting_file_option = true; + addname (optarg, 0); + break; + + case 'l': + /* When dumping directories, don't dump files/subdirectories + that are on other filesystems. */ + + one_file_system_option = true; + break; + + case 'L': + { + uintmax_t u; + if (xstrtoumax (optarg, 0, 10, &u, "") != LONGINT_OK) + USAGE_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("Invalid tape length"))); + tape_length_option = 1024 * (tarlong) u; + multi_volume_option = true; + } + break; - case 'M': /* Make Multivolume archive: - When we can't write any more - into the archive, re-open it, - and continue writing */ - f_multivol++; - break; + case 'm': + touch_option = true; + break; - case 'N': /* Only write files newer than X */ - get_newer: - f_new_files++; - new_time = get_date (optarg, (PTR) 0); - if (new_time == (time_t) - 1) - { - msg ("invalid date format `%s'", optarg); - exit (EX_ARGSBAD); - } - break; + case 'M': + /* Make multivolume archive: when we can't write any more into + the archive, re-open it, and continue writing. */ - case 'o': /* Generate old archive */ - if (f_gnudump /* || f_dironly */ ) - goto badopt; - f_oldarch++; - break; + multi_volume_option = true; + break; - case 'O': - f_exstdout++; - break; +#if !MSDOS + case 'N': + after_date_option = true; + /* Fall through. */ - case 'p': - f_use_protection++; - break; + case NEWER_MTIME_OPTION: + if (NEWER_OPTION_INITIALIZED (newer_mtime_option)) + USAGE_ERROR ((0, 0, _("More than one threshold date"))); - case 'P': - f_absolute_paths++; - break; + if (FILESYSTEM_PREFIX_LEN (optarg) != 0 + || ISSLASH (*optarg) + || *optarg == '.') + { + struct stat st; + if (deref_stat (dereference_option, optarg, &st) != 0) + { + stat_error (optarg); + USAGE_ERROR ((0, 0, _("Date file not found"))); + } + newer_mtime_option.tv_sec = st.st_mtime; + newer_mtime_option.tv_nsec = TIMESPEC_NS (st.st_mtim); + } + else + { + if (! get_date (&newer_mtime_option, optarg, NULL)) + { + WARN ((0, 0, _("Substituting %s for unknown date format %s"), + tartime (newer_mtime_option.tv_sec), quote (optarg))); + newer_mtime_option.tv_nsec = 0; + } + else + textual_date_option = optarg; + } - case 'r': /* Append files to the archive */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_APPEND; - break; + break; +#endif /* not MSDOS */ - case 'R': - f_sayblock++; /* Print block #s for debug */ - break; /* of bad tar archives */ + case 'o': + o_option = true; + break; - case 's': - f_sorted_names++; /* Names to extr are sorted */ - break; + case 'O': + to_stdout_option = true; + break; - case 'S': /* deal with sparse files */ - f_sparse_files++; - break; - case 't': - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_LIST; - f_verbose++; /* "t" output == "cv" or "xv" */ - break; + case 'p': + same_permissions_option = true; + break; - case 'T': - name_file = optarg; - f_namefile++; - break; + case 'P': + absolute_names_option = true; + break; - case 'u': /* Append files to the archive that - aren't there, or are newer than the - copy in the archive */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_UPDATE; - break; + case 'r': + set_subcommand_option (APPEND_SUBCOMMAND); + break; - case 'v': - f_verbose++; - break; + case 'R': + /* Print block numbers for debugging bad tar archives. */ - case 'V': - f_volhdr = optarg; - break; + /* It would surely make sense to exchange -B and -R, but it seems + that -B has been used for a long while in Sun tar ans most + BSD-derived systems. This is a consequence of the block/record + terminology confusion. */ - case 'w': - f_confirm++; - break; + block_number_option = true; + break; - case 'W': - f_verify++; - break; + case 's': + /* Names to extr are sorted. */ - case 'x': /* Extract files from the archive */ - if (cmd_mode != CMD_NONE) - goto badopt; - cmd_mode = CMD_EXTRACT; - break; + same_order_option = true; + break; - case 'X': - f_exclude++; - add_exclude_file (optarg); - break; + case 'S': + sparse_option = true; + break; - case 'z': - if (f_compressprog) - { - msg ("Only one compression option permitted\n"); - exit (EX_ARGSBAD); - } - f_compressprog = "gzip"; - break; + case 't': + set_subcommand_option (LIST_SUBCOMMAND); + verbose_option++; + break; - case 'Z': - if (f_compressprog) - { - msg ("Only one compression option permitted\n"); - exit (EX_ARGSBAD); - } - f_compressprog = "compress"; - break; + case 'T': + files_from_option = optarg; + break; - case '?': - badopt: - msg ("Unknown option. Use '%s --help' for a complete list of options.", tar); - exit (EX_ARGSBAD); + case 'u': + set_subcommand_option (UPDATE_SUBCOMMAND); + break; - } - } + case 'U': + old_files_option = UNLINK_FIRST_OLD_FILES; + break; - blocksize = blocking * RECORDSIZE; - if (n_ar_files == 0) - { - n_ar_files = 1; - ar_files[0] = getenv ("TAPE"); /* From environment, or */ - if (ar_files[0] == 0) - ar_files[0] = DEF_AR_FILE; /* From Makefile */ - } - if (n_ar_files > 1 && !f_multivol) - { - msg ("Multiple archive files requires --multi-volume\n"); - exit (EX_ARGSBAD); - } - if (f_compress_block && !f_compressprog) - { - msg ("You must use a compression option (--gzip, --compress\n\ -or --use-compress-program) with --block-compress.\n"); - exit (EX_ARGSBAD); - } -} + case UTC_OPTION: + utc_option = true; + break; + case 'v': + verbose_option++; + break; -/* - * Print as much help as the user's gonna get. - * - * We have to sprinkle in the KLUDGE lines because too many compilers - * cannot handle character strings longer than about 512 bytes. Yuk! - * In particular, MS-DOS and Xenix MSC and PDP-11 V7 Unix have this - * problem. - */ -void -describe () -{ - puts ("choose one of the following:"); - fputs ("\ --A, --catenate,\n\ - --concatenate append tar files to an archive\n\ --c, --create create a new archive\n\ --d, --diff,\n\ - --compare find differences between archive and file system\n\ ---delete delete from the archive (not for use on mag tapes!)\n\ --r, --append append files to the end of an archive\n\ --t, --list list the contents of an archive\n\ --u, --update only append files that are newer than copy in archive\n\ --x, --extract,\n\ - --get extract files from an archive\n", stdout); - - fprintf (stdout, "\ -Other options:\n\ ---atime-preserve don't change access times on dumped files\n\ --b, --block-size N block size of Nx512 bytes (default N=%d)\n", DEFBLOCKING); - fputs ("\ --B, --read-full-blocks reblock as we read (for reading 4.2BSD pipes)\n\ --C, --directory DIR change to directory DIR\n\ ---checkpoint print directory names while reading the archive\n\ -", stdout); /* KLUDGE */ - fprintf (stdout, "\ --f, --file [HOSTNAME:]F use archive file or device F (default %s)\n", - DEF_AR_FILE); - fputs ("\ ---force-local archive file is local even if has a colon\n\ --F, --info-script F\n\ - --new-volume-script F run script at end of each tape (implies -M)\n\ --G, --incremental create/list/extract old GNU-format incremental backup\n\ --g, --listed-incremental F create/list/extract new GNU-format incremental backup\n\ --h, --dereference don't dump symlinks; dump the files they point to\n\ --i, --ignore-zeros ignore blocks of zeros in archive (normally mean EOF)\n\ ---ignore-failed-read don't exit with non-zero status on unreadable files\n\ --k, --keep-old-files keep existing files; don't overwrite them from archive\n\ --K, --starting-file F begin at file F in the archive\n\ --l, --one-file-system stay in local file system when creating an archive\n\ --L, --tape-length N change tapes after writing N*1024 bytes\n\ -", stdout); /* KLUDGE */ - fputs ("\ --m, --modification-time don't extract file modified time\n\ --M, --multi-volume create/list/extract multi-volume archive\n\ --N, --after-date DATE,\n\ - --newer DATE only store files newer than DATE\n\ --o, --old-archive,\n\ - --portability write a V7 format archive, rather than ANSI format\n\ --O, --to-stdout extract files to standard output\n\ --p, --same-permissions,\n\ - --preserve-permissions extract all protection information\n\ --P, --absolute-paths don't strip leading `/'s from file names\n\ ---preserve like -p -s\n\ -", stdout); /* KLUDGE */ - fputs ("\ --R, --record-number show record number within archive with each message\n\ ---remove-files remove files after adding them to the archive\n\ --s, --same-order,\n\ - --preserve-order list of names to extract is sorted to match archive\n\ ---same-owner create extracted files with the same ownership \n\ --S, --sparse handle sparse files efficiently\n\ --T, --files-from F get names to extract or create from file F\n\ ---null -T reads null-terminated names, disable -C\n\ ---totals print total bytes written with --create\n\ --v, --verbose verbosely list files processed\n\ --V, --label NAME create archive with volume name NAME\n\ ---version print tar program version number\n\ --w, --interactive,\n\ - --confirmation ask for confirmation for every action\n\ -", stdout); /* KLUDGE */ - fputs ("\ --W, --verify attempt to verify the archive after writing it\n\ ---exclude FILE exclude file FILE\n\ --X, --exclude-from FILE exclude files listed in FILE\n\ --Z, --compress,\n\ - --uncompress filter the archive through compress\n\ --z, --gzip,\n\ - --ungzip filter the archive through gzip\n\ ---use-compress-program PROG\n\ - filter the archive through PROG (which must accept -d)\n\ ---block-compress block the output of compression program for tapes\n\ --[0-7][lmh] specify drive and density\n\ -", stdout); -} + case 'V': + volume_label_option = optarg; + break; -void -name_add (name) - char *name; -{ - if (n_indalloc == n_indused) - { - n_indalloc += 10; - n_ind = (char **) (n_indused ? ck_realloc (n_ind, n_indalloc * sizeof (char *)): ck_malloc (n_indalloc * sizeof (char *))); - } - n_ind[n_indused++] = name; -} + case 'w': + interactive_option = true; + break; -/* - * Set up to gather file names for tar. - * - * They can either come from stdin or from argv. - */ -void -name_init (argc, argv) - int argc; - char **argv; -{ + case 'W': + verify_option = true; + break; - if (f_namefile) - { - if (optind < argc) - { - msg ("too many args with -T option"); - exit (EX_ARGSBAD); - } - if (!strcmp (name_file, "-")) - { - namef = stdin; - } - else - { - namef = fopen (name_file, "r"); - if (namef == NULL) - { - msg_perror ("can't open file %s", name_file); - exit (EX_BADFILE); - } - } - } - else - { - /* Get file names from argv, after options. */ - n_argc = argc; - n_argv = argv; - } -} + case 'x': + set_subcommand_option (EXTRACT_SUBCOMMAND); + break; -/* Read the next filename read from STREAM and null-terminate it. - Put it into BUFFER, reallocating and adjusting *PBUFFER_SIZE if necessary. - Return the new value for BUFFER, or NULL at end of file. */ + case 'X': + if (add_exclude_file (add_exclude, excluded, optarg, + exclude_options | recursion_option, '\n') + != 0) + { + int e = errno; + FATAL_ERROR ((0, e, "%s", quotearg_colon (optarg))); + } + break; + + case 'y': + USAGE_ERROR ((0, 0, + _("Warning: the -y option is not supported;" + " perhaps you meant -j?"))); + break; + + case 'z': + set_use_compress_program_option ("gzip"); + break; + + case 'Z': + set_use_compress_program_option ("compress"); + break; + + case ANCHORED_OPTION: + exclude_options |= EXCLUDE_ANCHORED; + break; + + case ATIME_PRESERVE_OPTION: + atime_preserve_option = true; + break; + + case CHECKPOINT_OPTION: + checkpoint_option = true; + break; + + case BACKUP_OPTION: + backup_option = true; + if (optarg) + version_control_string = optarg; + break; + + case DELETE_OPTION: + set_subcommand_option (DELETE_SUBCOMMAND); + break; + + case EXCLUDE_OPTION: + add_exclude (excluded, optarg, exclude_options | recursion_option); + break; + + case FORCE_LOCAL_OPTION: + force_local_option = true; + break; + + case FORMAT_OPTION: + set_archive_format (optarg); + break; + + case INDEX_FILE_OPTION: + index_file_name = optarg; + break; + + case IGNORE_CASE_OPTION: + exclude_options |= FNM_CASEFOLD; + break; + + case IGNORE_FAILED_READ_OPTION: + ignore_failed_read_option = true; + break; + + case KEEP_NEWER_FILES_OPTION: + old_files_option = KEEP_NEWER_FILES; + break; + + case GROUP_OPTION: + if (! (strlen (optarg) < GNAME_FIELD_SIZE + && gname_to_gid (optarg, &group_option))) + { + uintmax_t g; + if (xstrtoumax (optarg, 0, 10, &g, "") == LONGINT_OK + && g == (gid_t) g) + group_option = g; + else + FATAL_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("%s: Invalid group"))); + } + break; + + case MODE_OPTION: + mode_option + = mode_compile (optarg, + MODE_MASK_EQUALS | MODE_MASK_PLUS | MODE_MASK_MINUS); + if (mode_option == MODE_INVALID) + FATAL_ERROR ((0, 0, _("Invalid mode given on option"))); + if (mode_option == MODE_MEMORY_EXHAUSTED) + xalloc_die (); + break; + + case NO_ANCHORED_OPTION: + exclude_options &= ~ EXCLUDE_ANCHORED; + break; + + case NO_IGNORE_CASE_OPTION: + exclude_options &= ~ FNM_CASEFOLD; + break; + + case NO_OVERWRITE_DIR_OPTION: + old_files_option = NO_OVERWRITE_DIR_OLD_FILES; + break; + + case NO_WILDCARDS_OPTION: + exclude_options &= ~ EXCLUDE_WILDCARDS; + break; + + case NO_WILDCARDS_MATCH_SLASH_OPTION: + exclude_options |= FNM_FILE_NAME; + break; + + case NULL_OPTION: + filename_terminator = '\0'; + break; + + case NUMERIC_OWNER_OPTION: + numeric_owner_option = true; + break; + + case OCCURRENCE_OPTION: + if (!optarg) + occurrence_option = 1; + else + { + uintmax_t u; + if (xstrtoumax (optarg, 0, 10, &u, "") == LONGINT_OK) + occurrence_option = u; + else + FATAL_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("Invalid number"))); + } + break; -char * -read_name_from_file (buffer, pbuffer_size, stream) - char *buffer; - size_t *pbuffer_size; - FILE *stream; -{ - register int c; - register int indx = 0; - register size_t buffer_size = *pbuffer_size; + case OVERWRITE_OPTION: + old_files_option = OVERWRITE_OLD_FILES; + break; - while ((c = getc (stream)) != EOF && c != filename_terminator) - { - if (indx == buffer_size) - { - buffer_size += NAMSIZ; - buffer = ck_realloc (buffer, buffer_size + 2); - } - buffer[indx++] = c; - } - if (indx == 0 && c == EOF) - return NULL; - if (indx == buffer_size) - { - buffer_size += NAMSIZ; - buffer = ck_realloc (buffer, buffer_size + 2); - } - buffer[indx] = '\0'; - *pbuffer_size = buffer_size; - return buffer; -} + case OWNER_OPTION: + if (! (strlen (optarg) < UNAME_FIELD_SIZE + && uname_to_uid (optarg, &owner_option))) + { + uintmax_t u; + if (xstrtoumax (optarg, 0, 10, &u, "") == LONGINT_OK + && u == (uid_t) u) + owner_option = u; + else + FATAL_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("Invalid owner"))); + } + break; -/* - * Get the next name from argv or the name file. - * - * Result is in static storage and can't be relied upon across two calls. - * - * If CHANGE_DIRS is non-zero, treat a filename of the form "-C" as - * meaning that the next filename is the name of a directory to change to. - * If `filename_terminator' is '\0', CHANGE_DIRS is effectively always 0. - */ - -char * -name_next (change_dirs) - int change_dirs; -{ - static char *buffer; /* Holding pattern */ - static int buffer_siz; - register char *p; - register char *q = 0; - register int next_name_is_dir = 0; - extern char *un_quote_string (); - - if (buffer_siz == 0) - { - buffer = ck_malloc (NAMSIZ + 2); - buffer_siz = NAMSIZ; - } - if (filename_terminator == '\0') - change_dirs = 0; -tryagain: - if (namef == NULL) - { - if (n_indscan < n_indused) - p = n_ind[n_indscan++]; - else if (optind < n_argc) - /* Names come from argv, after options */ - p = n_argv[optind++]; - else - { - if (q) - msg ("Missing filename after -C"); - return NULL; - } + case PAX_OPTION: + pax_option++; + xheader_set_option (optarg); + break; - /* JF trivial support for -C option. I don't know if - chdir'ing at this point is dangerous or not. - It seems to work, which is all I ask. */ - if (change_dirs && !q && p[0] == '-' && p[1] == 'C' && p[2] == '\0') - { - q = p; - goto tryagain; - } - if (q) - { - if (chdir (p) < 0) - msg_perror ("Can't chdir to %s", p); - q = 0; - goto tryagain; - } - /* End of JF quick -C hack */ + case POSIX_OPTION: + set_archive_format ("posix"); + break; -#if 0 - if (f_exclude && check_exclude (p)) - goto tryagain; -#endif - return un_quote_string (p); - } - while (p = read_name_from_file (buffer, &buffer_siz, namef)) - { - buffer = p; - if (*p == '\0') - continue; /* Ignore empty lines. */ - q = p + strlen (p) - 1; - while (q > p && *q == '/')/* Zap trailing "/"s. */ - *q-- = '\0'; - if (change_dirs && next_name_is_dir == 0 - && p[0] == '-' && p[1] == 'C' && p[2] == '\0') - { - next_name_is_dir = 1; - goto tryagain; - } - if (next_name_is_dir) + case PRESERVE_OPTION: + same_permissions_option = true; + same_order_option = true; + break; + + case RECORD_SIZE_OPTION: { - if (chdir (p) < 0) - msg_perror ("Can't change to directory %s", p); - next_name_is_dir = 0; - goto tryagain; + uintmax_t u; + if (! (xstrtoumax (optarg, 0, 10, &u, "") == LONGINT_OK + && u == (size_t) u)) + USAGE_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("Invalid record size"))); + record_size = u; + if (record_size % BLOCKSIZE != 0) + USAGE_ERROR ((0, 0, _("Record size must be a multiple of %d."), + BLOCKSIZE)); + blocking_factor = record_size / BLOCKSIZE; } -#if 0 - if (f_exclude && check_exclude (p)) - goto tryagain; -#endif - return un_quote_string (p); - } - return NULL; -} + break; + case RECURSIVE_UNLINK_OPTION: + recursive_unlink_option = true; + break; -/* - * Close the name file, if any. - */ -void -name_close () -{ - - if (namef != NULL && namef != stdin) - fclose (namef); -} + case REMOVE_FILES_OPTION: + remove_files_option = true; + break; + case RSH_COMMAND_OPTION: + rsh_command_option = optarg; + break; -/* - * Gather names in a list for scanning. - * Could hash them later if we really care. - * - * If the names are already sorted to match the archive, we just - * read them one by one. name_gather reads the first one, and it - * is called by name_match as appropriate to read the next ones. - * At EOF, the last name read is just left in the buffer. - * This option lets users of small machines extract an arbitrary - * number of files by doing "tar t" and editing down the list of files. - */ -void -name_gather () -{ - register char *p; - static struct name *namebuf; /* One-name buffer */ - static namelen; - static char *chdir_name; + case SHOW_DEFAULTS_OPTION: + printf ("--format=%s -f%s -b%d\n", + archive_format_string (DEFAULT_ARCHIVE_FORMAT), + DEFAULT_ARCHIVE, DEFAULT_BLOCKING); + exit(0); - if (f_sorted_names) - { - if (!namelen) + case STRIP_PATH_OPTION: { - namelen = NAMSIZ; - namebuf = (struct name *) ck_malloc (sizeof (struct name) + NAMSIZ); + uintmax_t u; + if (! (xstrtoumax (optarg, 0, 10, &u, "") == LONGINT_OK + && u == (size_t) u)) + USAGE_ERROR ((0, 0, "%s: %s", quotearg_colon (optarg), + _("Invalid number of elements"))); + strip_path_elements = u; } - p = name_next (0); - if (p) + break; + + case SUFFIX_OPTION: + backup_option = true; + backup_suffix_string = optarg; + break; + + case TOTALS_OPTION: + totals_option = true; + break; + + case USE_COMPRESS_PROGRAM_OPTION: + set_use_compress_program_option (optarg); + break; + + case VOLNO_FILE_OPTION: + volno_file_option = optarg; + break; + + case WILDCARDS_OPTION: + exclude_options |= EXCLUDE_WILDCARDS; + break; + + case WILDCARDS_MATCH_SLASH_OPTION: + exclude_options &= ~ FNM_FILE_NAME; + break; + + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + +#ifdef DEVICE_PREFIX { - if (*p == '-' && p[1] == 'C' && p[2] == '\0') + int device = optchar - '0'; + int density; + static char buf[sizeof DEVICE_PREFIX + 10]; + char *cursor; + + density = getopt_long (argc, argv, "lmh", 0, 0); + strcpy (buf, DEVICE_PREFIX); + cursor = buf + strlen (buf); + +#ifdef DENSITY_LETTER + + sprintf (cursor, "%d%c", device, density); + +#else /* not DENSITY_LETTER */ + + switch (density) { - chdir_name = name_next (0); - p = name_next (0); - if (!p) - { - msg ("Missing file name after -C"); - exit (EX_ARGSBAD); - } - namebuf->change_dir = chdir_name; + case 'l': +#ifdef LOW_NUM + device += LOW_NUM; +#endif + break; + + case 'm': +#ifdef MID_NUM + device += MID_NUM; +#else + device += 8; +#endif + break; + + case 'h': +#ifdef HGH_NUM + device += HGH_NUM; +#else + device += 16; +#endif + break; + + default: + usage (TAREXIT_FAILURE); } - namebuf->length = strlen (p); - if (namebuf->length >= namelen) + sprintf (cursor, "%d", device); + +#endif /* not DENSITY_LETTER */ + + if (archive_names == allocated_archive_names) { - namebuf = (struct name *) ck_realloc (namebuf, sizeof (struct name) + namebuf->length); - namelen = namebuf->length; + allocated_archive_names *= 2; + archive_name_array = + xrealloc (archive_name_array, + sizeof (const char *) * allocated_archive_names); } - strncpy (namebuf->name, p, namebuf->length); - namebuf->name[namebuf->length] = 0; - namebuf->next = (struct name *) NULL; - namebuf->found = 0; - namelist = namebuf; - namelast = namelist; + archive_name_array[archive_names++] = strdup (buf); } - return; - } + break; - /* Non sorted names -- read them all in */ - while (p = name_next (0)) - addname (p); -} +#else /* not DEVICE_PREFIX */ -/* - * Add a name to the namelist. - */ -void -addname (name) - char *name; /* pointer to name */ -{ - register int i; /* Length of string */ - register struct name *p; /* Current struct pointer */ - static char *chdir_name; - char *new_name (); + USAGE_ERROR ((0, 0, + _("Options `-[0-7][lmh]' not supported by *this* tar"))); + +#endif /* not DEVICE_PREFIX */ + } + + /* Special handling for 'o' option: - if (name[0] == '-' && name[1] == 'C' && name[2] == '\0') + GNU tar used to say "output old format". + UNIX98 tar says don't chown files after extracting (we use + "--no-same-owner" for this). + + The old GNU tar semantics is retained when used with --create + option, otherwise UNIX98 semantics is assumed */ + + if (o_option) { - chdir_name = name_next (0); - name = name_next (0); - if (!chdir_name) + if (subcommand_option == CREATE_SUBCOMMAND) { - msg ("Missing file name after -C"); - exit (EX_ARGSBAD); + /* GNU Tar <= 1.13 compatibility */ + set_archive_format ("v7"); } - if (chdir_name[0] != '/') + else { - char *path = ck_malloc (PATH_MAX); -#if defined(__MSDOS__) || defined(HAVE_GETCWD) || defined(_POSIX_VERSION) - if (!getcwd (path, PATH_MAX)) - { - msg ("Couldn't get current directory."); - exit (EX_SYSTEM); - } -#else - char *getwd (); - - if (!getwd (path)) - { - msg ("Couldn't get current directory: %s", path); - exit (EX_SYSTEM); - } -#endif - chdir_name = new_name (path, chdir_name); - free (path); + /* UNIX98 compatibility */ + same_owner_option = 1; } } - if (name) - { - i = strlen (name); - /*NOSTRICT*/ - p = (struct name *) malloc ((unsigned) (sizeof (struct name) + i)); - } - else - p = (struct name *) malloc ((unsigned) (sizeof (struct name))); - if (!p) - { - if (name) - msg ("cannot allocate mem for name '%s'.", name); - else - msg ("cannot allocate mem for chdir record."); - exit (EX_SYSTEM); - } - p->next = (struct name *) NULL; - if (name) + /* Handle operands after any "--" argument. */ + for (; optind < argc; optind++) { - p->fake = 0; - p->length = i; - strncpy (p->name, name, i); - p->name[i] = '\0'; /* Null term */ - } - else - p->fake = 1; - p->found = 0; - p->regexp = 0; /* Assume not a regular expression */ - p->firstch = 1; /* Assume first char is literal */ - p->change_dir = chdir_name; - p->dir_contents = 0; /* JF */ - if (name) - { - if (index (name, '*') || index (name, '[') || index (name, '?')) - { - p->regexp = 1; /* No, it's a regexp */ - if (name[0] == '*' || name[0] == '[' || name[0] == '?') - p->firstch = 0; /* Not even 1st char literal */ - } + name_add (argv[optind]); + input_files++; } - if (namelast) - namelast->next = p; - namelast = p; - if (!namelist) - namelist = p; -} + /* Process trivial options. */ -/* - * Return nonzero if name P (from an archive) matches any name from - * the namelist, zero if not. - */ -int -name_match (p) - register char *p; -{ - register struct name *nlp; - register int len; - -again: - if (0 == (nlp = namelist)) /* Empty namelist is easy */ - return 1; - if (nlp->fake) - { - if (nlp->change_dir && chdir (nlp->change_dir)) - msg_perror ("Can't change to directory %d", nlp->change_dir); - namelist = 0; - return 1; - } - len = strlen (p); - for (; nlp != 0; nlp = nlp->next) + if (show_version) { - /* If first chars don't match, quick skip */ - if (nlp->firstch && nlp->name[0] != p[0]) - continue; + printf ("tar (%s) %s\n%s\n", PACKAGE_NAME, PACKAGE_VERSION, + "Copyright (C) 2004 Free Software Foundation, Inc."); + puts (_("\ +This program comes with NO WARRANTY, to the extent permitted by law.\n\ +You may redistribute it under the terms of the GNU General Public License;\n\ +see the file named COPYING for details.")); - /* Regular expressions (shell globbing, actually). */ - if (nlp->regexp) - { - if (fnmatch (nlp->name, p, FNM_LEADING_DIR) == 0) - { - nlp->found = 1; /* Remember it matched */ - if (f_startfile) - { - free ((void *) namelist); - namelist = 0; - } - if (nlp->change_dir && chdir (nlp->change_dir)) - msg_perror ("Can't change to directory %s", nlp->change_dir); - return 1; /* We got a match */ - } - continue; - } + puts (_("Written by John Gilmore and Jay Fenlason.")); - /* Plain Old Strings */ - if (nlp->length <= len /* Archive len >= specified */ - && (p[nlp->length] == '\0' || p[nlp->length] == '/') - /* Full match on file/dirname */ - && strncmp (p, nlp->name, nlp->length) == 0) /* Name compare */ - { - nlp->found = 1; /* Remember it matched */ - if (f_startfile) - { - free ((void *) namelist); - namelist = 0; - } - if (nlp->change_dir && chdir (nlp->change_dir)) - msg_perror ("Can't change to directory %s", nlp->change_dir); - return 1; /* We got a match */ - } + exit (TAREXIT_SUCCESS); } - /* - * Filename from archive not found in namelist. - * If we have the whole namelist here, just return 0. - * Otherwise, read the next name in and compare it. - * If this was the last name, namelist->found will remain on. - * If not, we loop to compare the newly read name. - */ - if (f_sorted_names && namelist->found) + if (show_help) + usage (TAREXIT_SUCCESS); + + /* Derive option values and check option consistency. */ + + if (archive_format == DEFAULT_FORMAT) { - name_gather (); /* Read one more */ - if (!namelist->found) - goto again; + if (pax_option) + archive_format = POSIX_FORMAT; + else + archive_format = DEFAULT_ARCHIVE_FORMAT; } - return 0; -} + if (volume_label_option && subcommand_option == CREATE_SUBCOMMAND) + assert_format (FORMAT_MASK (OLDGNU_FORMAT) + | FORMAT_MASK (GNU_FORMAT)); -/* - * Print the names of things in the namelist that were not matched. - */ -void -names_notfound () -{ - register struct name *nlp, *next; - register char *p; - for (nlp = namelist; nlp != 0; nlp = next) + if (incremental_option || multi_volume_option) + assert_format (FORMAT_MASK (OLDGNU_FORMAT) | FORMAT_MASK (GNU_FORMAT)); + + if (sparse_option) + assert_format (FORMAT_MASK (OLDGNU_FORMAT) + | FORMAT_MASK (GNU_FORMAT) + | FORMAT_MASK (POSIX_FORMAT)); + + if (occurrence_option) { - next = nlp->next; - if (!nlp->found) - msg ("%s not found in archive", nlp->name); - - /* - * We could free() the list, but the process is about - * to die anyway, so save some CPU time. Amigas and - * other similarly broken software will need to waste - * the time, though. - */ -#ifdef amiga - if (!f_sorted_names) - free (nlp); -#endif + if (!input_files && !files_from_option) + USAGE_ERROR ((0, 0, + _("--occurrence is meaningless without a file list"))); + if (subcommand_option != DELETE_SUBCOMMAND + && subcommand_option != DIFF_SUBCOMMAND + && subcommand_option != EXTRACT_SUBCOMMAND + && subcommand_option != LIST_SUBCOMMAND) + USAGE_ERROR ((0, 0, + _("--occurrence cannot be used in the requested operation mode"))); } - namelist = (struct name *) NULL; - namelast = (struct name *) NULL; - if (f_sorted_names) + if (archive_names == 0) { - while (0 != (p = name_next (1))) - msg ("%s not found in archive", p); + /* If no archive file name given, try TAPE from the environment, or + else, DEFAULT_ARCHIVE from the configuration process. */ + + archive_names = 1; + archive_name_array[0] = getenv ("TAPE"); + if (! archive_name_array[0]) + archive_name_array[0] = DEFAULT_ARCHIVE; } -} -/* These next routines were created by JF */ + /* Allow multiple archives only with `-M'. */ -void -name_expand () -{ - ; -} + if (archive_names > 1 && !multi_volume_option) + USAGE_ERROR ((0, 0, + _("Multiple archive files require `-M' option"))); -/* This is like name_match(), except that it returns a pointer to the name - it matched, and doesn't set ->found The caller will have to do that - if it wants to. Oh, and if the namelist is empty, it returns 0, unlike - name_match(), which returns TRUE */ + if (listed_incremental_option + && NEWER_OPTION_INITIALIZED (newer_mtime_option)) + USAGE_ERROR ((0, 0, + _("Cannot combine --listed-incremental with --newer"))); -struct name * -name_scan (p) - register char *p; -{ - register struct name *nlp; - register int len; - -again: - if (0 == (nlp = namelist)) /* Empty namelist is easy */ - return 0; - len = strlen (p); - for (; nlp != 0; nlp = nlp->next) + if (volume_label_option) { - /* If first chars don't match, quick skip */ - if (nlp->firstch && nlp->name[0] != p[0]) - continue; - - /* Regular expressions */ - if (nlp->regexp) - { - if (fnmatch (nlp->name, p, FNM_LEADING_DIR) == 0) - return nlp; /* We got a match */ - continue; - } + size_t volume_label_max_len = + (sizeof current_header->header.name + - 1 /* for trailing '\0' */ + - (multi_volume_option + ? (sizeof " Volume " + - 1 /* for null at end of " Volume " */ + + INT_STRLEN_BOUND (int) /* for volume number */ + - 1 /* for sign, as 0 <= volno */) + : 0)); + if (volume_label_max_len < strlen (volume_label_option)) + USAGE_ERROR ((0, 0, + ngettext ("%s: Volume label is too long (limit is %lu byte)", + "%s: Volume label is too long (limit is %lu bytes)", + volume_label_max_len), + quotearg_colon (volume_label_option), + (unsigned long) volume_label_max_len)); + } - /* Plain Old Strings */ - if (nlp->length <= len /* Archive len >= specified */ - && (p[nlp->length] == '\0' || p[nlp->length] == '/') - /* Full match on file/dirname */ - && strncmp (p, nlp->name, nlp->length) == 0) /* Name compare */ - return nlp; /* We got a match */ + if (verify_option) + { + if (multi_volume_option) + USAGE_ERROR ((0, 0, _("Cannot verify multi-volume archives"))); + if (use_compress_program_option) + USAGE_ERROR ((0, 0, _("Cannot verify compressed archives"))); } - /* - * Filename from archive not found in namelist. - * If we have the whole namelist here, just return 0. - * Otherwise, read the next name in and compare it. - * If this was the last name, namelist->found will remain on. - * If not, we loop to compare the newly read name. - */ - if (f_sorted_names && namelist->found) + if (use_compress_program_option) { - name_gather (); /* Read one more */ - if (!namelist->found) - goto again; + if (multi_volume_option) + USAGE_ERROR ((0, 0, _("Cannot use multi-volume compressed archives"))); + if (subcommand_option == UPDATE_SUBCOMMAND) + USAGE_ERROR ((0, 0, _("Cannot update compressed archives"))); } - return (struct name *) 0; -} -/* This returns a name from the namelist which doesn't have ->found set. - It sets ->found before returning, so successive calls will find and return - all the non-found names in the namelist */ + /* It is no harm to use --pax-option on non-pax archives in archive + reading mode. It may even be useful, since it allows to override + file attributes from tar headers. Therefore I allow such usage. + --gray */ + if (pax_option + && archive_format != POSIX_FORMAT + && (subcommand_option != EXTRACT_SUBCOMMAND + || subcommand_option != DIFF_SUBCOMMAND + || subcommand_option != LIST_SUBCOMMAND)) + USAGE_ERROR ((0, 0, _("--pax-option can be used only on POSIX archives"))); + + /* If ready to unlink hierarchies, so we are for simpler files. */ + if (recursive_unlink_option) + old_files_option = UNLINK_FIRST_OLD_FILES; + + /* Forbid using -c with no input files whatsoever. Check that `-f -', + explicit or implied, is used correctly. */ + + switch (subcommand_option) + { + case CREATE_SUBCOMMAND: + if (input_files == 0 && !files_from_option) + USAGE_ERROR ((0, 0, + _("Cowardly refusing to create an empty archive"))); + break; -struct name *gnu_list_name; + case EXTRACT_SUBCOMMAND: + case LIST_SUBCOMMAND: + case DIFF_SUBCOMMAND: + for (archive_name_cursor = archive_name_array; + archive_name_cursor < archive_name_array + archive_names; + archive_name_cursor++) + if (!strcmp (*archive_name_cursor, "-")) + request_stdin ("-f"); + break; -char * -name_from_list () -{ - if (!gnu_list_name) - gnu_list_name = namelist; - while (gnu_list_name && gnu_list_name->found) - gnu_list_name = gnu_list_name->next; - if (gnu_list_name) - { - gnu_list_name->found++; - if (gnu_list_name->change_dir) - if (chdir (gnu_list_name->change_dir) < 0) - msg_perror ("can't chdir to %s", gnu_list_name->change_dir); - return gnu_list_name->name; + case CAT_SUBCOMMAND: + case UPDATE_SUBCOMMAND: + case APPEND_SUBCOMMAND: + for (archive_name_cursor = archive_name_array; + archive_name_cursor < archive_name_array + archive_names; + archive_name_cursor++) + if (!strcmp (*archive_name_cursor, "-")) + USAGE_ERROR ((0, 0, + _("Options `-Aru' are incompatible with `-f -'"))); + + default: + break; } - return (char *) 0; -} -void -blank_name_list () -{ - struct name *n; + archive_name_cursor = archive_name_array; - gnu_list_name = 0; - for (n = namelist; n; n = n->next) - n->found = 0; -} + /* Prepare for generating backup names. */ -char * -new_name (path, name) - char *path, *name; -{ - char *path_buf; + if (backup_suffix_string) + simple_backup_suffix = xstrdup (backup_suffix_string); + + if (backup_option) + backup_type = xget_version ("--backup", version_control_string); - path_buf = (char *) malloc (strlen (path) + strlen (name) + 2); - if (path_buf == 0) + if (verbose_option && textual_date_option) { - msg ("Can't allocate memory for name '%s/%s", path, name); - exit (EX_SYSTEM); + /* FIXME: tartime should support nanoseconds, too, so that this + comparison doesn't complain about lost nanoseconds. */ + char const *treated_as = tartime (newer_mtime_option.tv_sec); + if (strcmp (textual_date_option, treated_as) != 0) + WARN ((0, 0, _("Treating date `%s' as %s + %ld nanoseconds"), + textual_date_option, treated_as, newer_mtime_option.tv_nsec)); } - (void) sprintf (path_buf, "%s/%s", path, name); - return path_buf; } -/* returns non-zero if the luser typed 'y' or 'Y', zero otherwise. */ + +/* Tar proper. */ +/* Main routine for tar. */ int -confirm (action, file) - char *action, *file; +main (int argc, char **argv) { - int c, nl; - static FILE *confirm_file = 0; - extern FILE *msg_file; - extern char TTY_NAME[]; +#if HAVE_CLOCK_GETTIME + if (clock_gettime (CLOCK_REALTIME, &start_timespec) != 0) +#endif + start_time = time (0); + program_name = argv[0]; + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); - fprintf (msg_file, "%s %s?", action, file); - fflush (msg_file); - if (!confirm_file) - { - confirm_file = (archive == 0) ? fopen (TTY_NAME, "r") : stdin; - if (!confirm_file) - { - msg ("Can't read confirmation from user"); - exit (EX_SYSTEM); - } - } - c = getc (confirm_file); - for (nl = c; nl != '\n' && nl != EOF; nl = getc (confirm_file)) - ; - return (c == 'y' || c == 'Y'); -} + exit_status = TAREXIT_SUCCESS; + filename_terminator = '\n'; + set_quoting_style (0, escape_quoting_style); -char *x_buffer = 0; -int size_x_buffer; -int free_x_buffer; + /* Pre-allocate a few structures. */ -char **exclude = 0; -int size_exclude = 0; -int free_exclude = 0; + allocated_archive_names = 10; + archive_name_array = + xmalloc (sizeof (const char *) * allocated_archive_names); + archive_names = 0; -char **re_exclude = 0; -int size_re_exclude = 0; -int free_re_exclude = 0; +#ifdef SIGCHLD + /* System V fork+wait does not work if SIGCHLD is ignored. */ + signal (SIGCHLD, SIG_DFL); +#endif -void -add_exclude (name) - char *name; -{ - /* char *rname;*/ - /* char **tmp_ptr;*/ - int size_buf; + init_names (); - un_quote_string (name); - size_buf = strlen (name); + /* Decode options. */ - if (x_buffer == 0) - { - x_buffer = (char *) ck_malloc (size_buf + 1024); - free_x_buffer = 1024; - } - else if (free_x_buffer <= size_buf) - { - char *old_x_buffer; - char **tmp_ptr; - - old_x_buffer = x_buffer; - x_buffer = (char *) ck_realloc (x_buffer, size_x_buffer + 1024); - free_x_buffer = 1024; - for (tmp_ptr = exclude; tmp_ptr < exclude + size_exclude; tmp_ptr++) - *tmp_ptr = x_buffer + ((*tmp_ptr) - old_x_buffer); - for (tmp_ptr = re_exclude; tmp_ptr < re_exclude + size_re_exclude; tmp_ptr++) - *tmp_ptr = x_buffer + ((*tmp_ptr) - old_x_buffer); - } + decode_options (argc, argv); + name_init (); - if (is_regex (name)) - { - if (free_re_exclude == 0) - { - re_exclude = (char **) (re_exclude ? ck_realloc (re_exclude, (size_re_exclude + 32) * sizeof (char *)): ck_malloc (sizeof (char *) * 32)); - free_re_exclude += 32; - } - re_exclude[size_re_exclude] = x_buffer + size_x_buffer; - size_re_exclude++; - free_re_exclude--; - } - else + /* Main command execution. */ + + if (volno_file_option) + init_volume_number (); + + switch (subcommand_option) { - if (free_exclude == 0) - { - exclude = (char **) (exclude ? ck_realloc (exclude, (size_exclude + 32) * sizeof (char *)): ck_malloc (sizeof (char *) * 32)); - free_exclude += 32; - } - exclude[size_exclude] = x_buffer + size_x_buffer; - size_exclude++; - free_exclude--; - } - strcpy (x_buffer + size_x_buffer, name); - size_x_buffer += size_buf + 1; - free_x_buffer -= size_buf + 1; -} + case UNKNOWN_SUBCOMMAND: + USAGE_ERROR ((0, 0, + _("You must specify one of the `-Acdtrux' options"))); -void -add_exclude_file (file) - char *file; -{ - FILE *fp; - char buf[1024]; + case CAT_SUBCOMMAND: + case UPDATE_SUBCOMMAND: + case APPEND_SUBCOMMAND: + update_archive (); + break; - if (strcmp (file, "-")) - fp = fopen (file, "r"); - else - /* Let's hope the person knows what they're doing. */ - /* Using -X - -T - -f - will get you *REALLY* strange - results. . . */ - fp = stdin; + case DELETE_SUBCOMMAND: + delete_archive_members (); + break; - if (!fp) - { - msg_perror ("can't open %s", file); - exit (2); - } - while (fgets (buf, 1024, fp)) - { - /* int size_buf;*/ - char *end_str; + case CREATE_SUBCOMMAND: + create_archive (); + name_close (); + + if (totals_option) + print_total_written (); + break; - end_str = rindex (buf, '\n'); - if (end_str) - *end_str = '\0'; - add_exclude (buf); + case EXTRACT_SUBCOMMAND: + extr_init (); + read_and (extract_archive); + /* FIXME: should extract_finish () even if an ordinary signal is + received. */ + extract_finish (); + + break; + + case LIST_SUBCOMMAND: + read_and (list_archive); + break; + + case DIFF_SUBCOMMAND: + diff_init (); + read_and (diff_archive); + break; } - fclose (fp); + + if (check_links_option) + check_links (); + + if (volno_file_option) + closeout_volume_number (); + + /* Dispose of allocated memory, and return. */ + + free (archive_name_array); + name_term (); + + if (stdlis != stderr && (ferror (stdlis) || fclose (stdlis) != 0)) + FATAL_ERROR ((0, 0, _("Error in writing to standard output"))); + if (exit_status == TAREXIT_FAILURE) + error (0, 0, _("Error exit delayed from previous errors")); + if (ferror (stderr) || fclose (stderr) != 0) + exit_status = TAREXIT_FAILURE; + return exit_status; } -int -is_regex (str) - char *str; +void +tar_stat_init (struct tar_stat_info *st) { - return index (str, '*') || index (str, '[') || index (str, '?'); + memset (st, 0, sizeof (*st)); } -/* Returns non-zero if the file 'name' should not be added/extracted */ -int -check_exclude (name) - char *name; +void +tar_stat_destroy (struct tar_stat_info *st) { - int n; - char *str; - extern char *strstr (); - - for (n = 0; n < size_re_exclude; n++) - { - if (fnmatch (re_exclude[n], name, FNM_LEADING_DIR) == 0) - return 1; - } - for (n = 0; n < size_exclude; n++) - { - /* Accept the output from strstr only if it is the last - part of the string. There is certainly a faster way to - do this. . . */ - if ((str = strstr (name, exclude[n])) - && (str == name || str[-1] == '/') - && str[strlen (exclude[n])] == '\0') - return 1; - } - return 0; + free (st->orig_file_name); + free (st->file_name); + free (st->link_name); + free (st->uname); + free (st->gname); + free (st->sparse_map); + memset (st, 0, sizeof (*st)); }