X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Ftar.c;h=8d23a4faa656f270dee2a3b70838003a035e81ad;hb=1bcbbcf1ff2c537ffa970dbf82e3843d4ad110e5;hp=78638d02c3aacd2616e484c76c23f9e7408c9416;hpb=b1f2c7786087b1b4640bcb609a853fd10e38cfe7;p=chaz%2Ftar diff --git a/src/tar.c b/src/tar.c index 78638d0..8d23a4f 100644 --- a/src/tar.c +++ b/src/tar.c @@ -1,13 +1,13 @@ /* A tar (tape archiver) program. Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, - 2001, 2003, 2004 Free Software Foundation, Inc. + 2001, 2003, 2004, 2005, 2006, 2007, 2009 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 + Free Software Foundation; either version 3, or (at your option) any later version. This program is distributed in the hope that it will be useful, but @@ -17,12 +17,14 @@ 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. */ + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ -#include "system.h" +#include #include #include +#include +#include #include #if ! defined SIGCHLD && defined SIGCLD @@ -36,11 +38,19 @@ #define GLOBAL #include "common.h" +#include +#include +#include +#include #include -#include +#include +#include #include #include +#include #include +#include +#include /* Local declarations. */ @@ -73,12 +83,15 @@ request_stdin (const char *option) stdin_used_by = option; } -/* Returns true if and only if the user typed 'y' or 'Y'. */ +extern int rpmatch (char const *response); + +/* Returns true if and only if the user typed an affirmative response. */ int confirm (const char *message_action, const char *message_name) { static FILE *confirm_file; static int confirm_file_EOF; + bool status = false; if (!confirm_file) { @@ -98,22 +111,24 @@ confirm (const char *message_action, const char *message_name) fprintf (stdlis, "%s %s?", message_action, quote (message_name)); fflush (stdlis); - { - int reply = confirm_file_EOF ? EOF : getc (confirm_file); - int character; + if (!confirm_file_EOF) + { + char *response = NULL; + size_t response_size = 0; + if (getline (&response, &response_size, confirm_file) < 0) + confirm_file_EOF = 1; + else + status = rpmatch (response) > 0; + free (response); + } - 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'; - } + if (confirm_file_EOF) + { + fputc ('\n', stdlis); + fflush (stdlis); + } + + return status; } static struct fmttab { @@ -129,7 +144,7 @@ static struct fmttab { #endif { "gnu", GNU_FORMAT }, { "pax", POSIX_FORMAT }, /* An alias for posix */ - { NULL, 0 } + { NULL, 0 } }; static void @@ -145,7 +160,7 @@ set_archive_format (char const *name) archive_format = p->fmt; } -static const char * +const char * archive_format_string (enum archive_format fmt) { struct fmttab const *p; @@ -161,88 +176,178 @@ archive_format_string (enum archive_format fmt) static void assert_format(unsigned fmt_mask) { - if ((FORMAT_MASK(archive_format) & fmt_mask) == 0) + if ((FORMAT_MASK (archive_format) & fmt_mask) == 0) USAGE_ERROR ((0, 0, _("GNU features wanted on incompatible archive format"))); } +const char * +subcommand_string (enum subcommand c) +{ + switch (c) + { + case UNKNOWN_SUBCOMMAND: + return "unknown?"; + + case APPEND_SUBCOMMAND: + return "-r"; + + case CAT_SUBCOMMAND: + return "-A"; + + case CREATE_SUBCOMMAND: + return "-c"; + + case DELETE_SUBCOMMAND: + return "-D"; + + case DIFF_SUBCOMMAND: + return "-d"; + + case EXTRACT_SUBCOMMAND: + return "-x"; + + case LIST_SUBCOMMAND: + return "-t"; + + case UPDATE_SUBCOMMAND: + return "-u"; + + default: + abort (); + } +} + +void +tar_list_quoting_styles (argp_fmtstream_t fs, char *prefix) +{ + int i; + + for (i = 0; quoting_style_args[i]; i++) + argp_fmtstream_printf (fs, "%s%s\n", prefix, quoting_style_args[i]); +} + +void +tar_set_quoting_style (char *arg) +{ + int i; + + for (i = 0; quoting_style_args[i]; i++) + if (strcmp (arg, quoting_style_args[i]) == 0) + { + set_quoting_style (NULL, i); + return; + } + FATAL_ERROR ((0, 0, + _("Unknown quoting style `%s'. Try `%s --quoting-style=help' to get a list."), arg, program_invocation_short_name)); +} /* 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 non-characters as pseudo short options, - starting at CHAR_MAX + 1 and going upwards. */ - enum { ANCHORED_OPTION = CHAR_MAX + 1, ATIME_PRESERVE_OPTION, BACKUP_OPTION, + CHECK_DEVICE_OPTION, CHECKPOINT_OPTION, - CHECK_LINKS_OPTION, + CHECKPOINT_ACTION_OPTION, + DELAY_DIRECTORY_RESTORE_OPTION, + HARD_DEREFERENCE_OPTION, DELETE_OPTION, + EXCLUDE_CACHES_OPTION, + EXCLUDE_CACHES_UNDER_OPTION, + EXCLUDE_CACHES_ALL_OPTION, EXCLUDE_OPTION, + EXCLUDE_TAG_OPTION, + EXCLUDE_TAG_UNDER_OPTION, + EXCLUDE_TAG_ALL_OPTION, + EXCLUDE_VCS_OPTION, FORCE_LOCAL_OPTION, GROUP_OPTION, + HANG_OPTION, IGNORE_CASE_OPTION, + IGNORE_COMMAND_ERROR_OPTION, IGNORE_FAILED_READ_OPTION, INDEX_FILE_OPTION, KEEP_NEWER_FILES_OPTION, - LICENSE_OPTION, + LEVEL_OPTION, + LZMA_OPTION, + LZOP_OPTION, MODE_OPTION, + MTIME_OPTION, NEWER_MTIME_OPTION, NO_ANCHORED_OPTION, + NO_AUTO_COMPRESS_OPTION, + NO_CHECK_DEVICE_OPTION, + NO_DELAY_DIRECTORY_RESTORE_OPTION, NO_IGNORE_CASE_OPTION, + NO_IGNORE_COMMAND_ERROR_OPTION, + NO_NULL_OPTION, NO_OVERWRITE_DIR_OPTION, + NO_QUOTE_CHARS_OPTION, NO_RECURSION_OPTION, NO_SAME_OWNER_OPTION, NO_SAME_PERMISSIONS_OPTION, - NO_WILDCARDS_OPTION, + NO_UNQUOTE_OPTION, NO_WILDCARDS_MATCH_SLASH_OPTION, + NO_WILDCARDS_OPTION, NULL_OPTION, NUMERIC_OWNER_OPTION, OCCURRENCE_OPTION, OLD_ARCHIVE_OPTION, + ONE_FILE_SYSTEM_OPTION, + OVERWRITE_DIR_OPTION, OVERWRITE_OPTION, OWNER_OPTION, PAX_OPTION, POSIX_OPTION, PRESERVE_OPTION, + QUOTE_CHARS_OPTION, + QUOTING_STYLE_OPTION, RECORD_SIZE_OPTION, RECURSION_OPTION, RECURSIVE_UNLINK_OPTION, REMOVE_FILES_OPTION, + RESTRICT_OPTION, RMT_COMMAND_OPTION, RSH_COMMAND_OPTION, SAME_OWNER_OPTION, SHOW_DEFAULTS_OPTION, SHOW_OMITTED_DIRS_OPTION, + SHOW_TRANSFORMED_NAMES_OPTION, + SPARSE_VERSION_OPTION, STRIP_COMPONENTS_OPTION, SUFFIX_OPTION, + TEST_LABEL_OPTION, TOTALS_OPTION, + TO_COMMAND_OPTION, + TRANSFORM_OPTION, + UNQUOTE_OPTION, USAGE_OPTION, - USE_COMPRESS_PROGRAM_OPTION, UTC_OPTION, VERSION_OPTION, VOLNO_FILE_OPTION, - WILDCARDS_OPTION, - WILDCARDS_MATCH_SLASH_OPTION + WARNING_OPTION, + WILDCARDS_MATCH_SLASH_OPTION, + WILDCARDS_OPTION }; -const char *argp_program_version = "tar (" PACKAGE ") " VERSION; +const char *argp_program_version = "tar (" PACKAGE_NAME ") " VERSION; const char *argp_program_bug_address = "<" PACKAGE_BUGREPORT ">"; -static char doc[] = N_("GNU `tar' saves many files together into a single tape or disk archive, and can restore individual files from the archive.\n\ +static char const doc[] = N_("\ +GNU `tar' saves many files together into a single tape or disk archive, \ +and can restore individual files from the archive.\n\ \n\ Examples:\n\ tar -cf archive.tar foo bar # Create archive.tar from files foo and bar.\n\ tar -tvf archive.tar # List all files in archive.tar verbosely.\n\ - tar -xf archive.tar # Extract all files from archive.tar.\n\ -\vThe backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\ + tar -xf archive.tar # Extract all files from archive.tar.\n") +"\v" +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\ + none, off never make backups\n\ t, numbered make numbered backups\n\ nil, existing numbered if numbered backups exist, simple otherwise\n\ never, simple always make simple backups\n"); @@ -250,305 +355,568 @@ The version control may be set with --backup or VERSION_CONTROL, values are:\n\n /* NOTE: - Available option letters are DEIJQY and aeqy. Consider the following + Available option letters are DEQY and eqy. Consider the following assignments: - [For Solaris tar compatibility] + [For Solaris tar compatibility =/= Is it important at all?] e exit immediately with a nonzero exit status if unexpected errors occur E use extended headers (--format=posix) + [q alias for --occurrence=1 =/= this would better be used for quiet?] - [I same as T =/= will harm star compatibility] - + y per-file gzip compression Y per-block gzip compression */ static struct argp_option options[] = { +#define GRID 10 {NULL, 0, NULL, 0, - N_("Main operation mode:"), 0}, - + N_("Main operation mode:"), GRID }, + {"list", 't', 0, 0, - N_("list the contents of an archive"), 10 }, + N_("list the contents of an archive"), GRID+1 }, {"extract", 'x', 0, 0, - N_("extract files from an archive"), 10 }, - {"get", 0, 0, OPTION_ALIAS, NULL, 0 }, + N_("extract files from an archive"), GRID+1 }, + {"get", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"create", 'c', 0, 0, - N_("create a new archive"), 10 }, + N_("create a new archive"), GRID+1 }, {"diff", 'd', 0, 0, - N_("find differences between archive and file system"), 10 }, - {"compare", 0, 0, OPTION_ALIAS, NULL, 10}, + N_("find differences between archive and file system"), GRID+1 }, + {"compare", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"append", 'r', 0, 0, - N_("append files to the end of an archive"), 10 }, + N_("append files to the end of an archive"), GRID+1 }, {"update", 'u', 0, 0, - N_("only append files newer than copy in archive"), 10 }, + N_("only append files newer than copy in archive"), GRID+1 }, {"catenate", 'A', 0, 0, - N_("append tar files to an archive"), 10 }, - {"concatenate", 0, 0, OPTION_ALIAS, NULL, 10}, + N_("append tar files to an archive"), GRID+1 }, + {"concatenate", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"delete", DELETE_OPTION, 0, 0, - N_("delete from the archive (not on mag tapes!)"), 10 }, + N_("delete from the archive (not on mag tapes!)"), GRID+1 }, + {"test-label", TEST_LABEL_OPTION, NULL, 0, + N_("test the archive volume label and exit"), GRID+1 }, +#undef GRID +#define GRID 20 {NULL, 0, NULL, 0, - N_("Operation modifiers:"), 20}, + N_("Operation modifiers:"), GRID }, + + {"sparse", 'S', 0, 0, + N_("handle sparse files efficiently"), GRID+1 }, + {"sparse-version", SPARSE_VERSION_OPTION, N_("MAJOR[.MINOR]"), 0, + N_("set version of the sparse format to use (implies --sparse)"), GRID+1}, + {"incremental", 'G', 0, 0, + N_("handle old GNU-format incremental backup"), GRID+1 }, + {"listed-incremental", 'g', N_("FILE"), 0, + N_("handle new GNU-format incremental backup"), GRID+1 }, + {"level", LEVEL_OPTION, N_("NUMBER"), 0, + N_("dump level for created listed-incremental archive"), GRID+1 }, + {"ignore-failed-read", IGNORE_FAILED_READ_OPTION, 0, 0, + N_("do not exit with nonzero on unreadable files"), GRID+1 }, + {"occurrence", OCCURRENCE_OPTION, N_("NUMBER"), OPTION_ARG_OPTIONAL, + N_("process only the NUMBERth occurrence of each file in the archive;" + " this option is valid only in conjunction with one of the subcommands" + " --delete, --diff, --extract or --list and when a list of files" + " is given either on the command line or via the -T option;" + " NUMBER defaults to 1"), GRID+1 }, + {"seek", 'n', NULL, 0, + N_("archive is seekable"), GRID+1 }, + {"no-check-device", NO_CHECK_DEVICE_OPTION, NULL, 0, + N_("do not check device numbers when creating incremental archives"), + GRID+1 }, + {"check-device", CHECK_DEVICE_OPTION, NULL, 0, + N_("check device numbers when creating incremental archives (default)"), + GRID+1 }, +#undef GRID + +#define GRID 30 + {NULL, 0, NULL, 0, + N_("Overwrite control:"), GRID }, {"verify", 'W', 0, 0, - N_("attempt to verify the archive after writing it"), 21 }, + N_("attempt to verify the archive after writing it"), GRID+1 }, {"remove-files", REMOVE_FILES_OPTION, 0, 0, - N_("remove files after adding them to the archive"), 21 }, + N_("remove files after adding them to the archive"), GRID+1 }, {"keep-old-files", 'k', 0, 0, - N_("don't replace existing files when extracting"), 21 }, + N_("don't replace existing files when extracting"), GRID+1 }, {"keep-newer-files", KEEP_NEWER_FILES_OPTION, 0, 0, - N_("don't replace existing files that are newer than their archive copies"), 21 }, - {"no-overwrite-dir", NO_OVERWRITE_DIR_OPTION, 0, 0, - N_("preserve metadata of existing directories"), 21 }, + N_("don't replace existing files that are newer than their archive copies"), GRID+1 }, {"overwrite", OVERWRITE_OPTION, 0, 0, - N_("overwrite existing files when extracting"), 21 }, + N_("overwrite existing files when extracting"), GRID+1 }, {"unlink-first", 'U', 0, 0, - N_("remove each file prior to extracting over it"), 21 }, + N_("remove each file prior to extracting over it"), GRID+1 }, {"recursive-unlink", RECURSIVE_UNLINK_OPTION, 0, 0, - N_("empty hierarchies prior to extracting directory"), 21 }, - {"sparse", 'S', 0, 0, - N_("handle sparse files efficiently"), 21 }, + N_("empty hierarchies prior to extracting directory"), GRID+1 }, + {"no-overwrite-dir", NO_OVERWRITE_DIR_OPTION, 0, 0, + N_("preserve metadata of existing directories"), GRID+1 }, + {"overwrite-dir", OVERWRITE_DIR_OPTION, 0, 0, + N_("overwrite metadata of existing directories when extracting (default)"), + GRID+1 }, +#undef GRID + +#define GRID 40 + {NULL, 0, NULL, 0, + N_("Select output stream:"), GRID }, + {"to-stdout", 'O', 0, 0, - N_("extract files to standard output"), 21 }, - {"incremental", 'G', 0, 0, - N_("handle old GNU-format incremental backup"), 21 }, - {"listed-incremental", 'g', N_("FILE"), 0, - N_("handle new GNU-format incremental backup"), 21 }, - {"ignore-failed-read", IGNORE_FAILED_READ_OPTION, 0, 0, - N_("do not exit with nonzero on unreadable files"), 21 }, - {"occurrence", OCCURRENCE_OPTION, N_("NUMBER"), OPTION_ARG_OPTIONAL, - N_("process only the NUMth occurrence of each file in the archive. This option is valid only in conjunction with one of the subcommands --delete, --diff, --extract or --list and when a list of files is given either on the command line or via -T option. NUMBER defaults to 1."), 21 }, - {"seek", 'n', NULL, 0, - N_("Archive is seekable"), 21 }, - + N_("extract files to standard output"), GRID+1 }, + {"to-command", TO_COMMAND_OPTION, N_("COMMAND"), 0, + N_("pipe extracted files to another program"), GRID+1 }, + {"ignore-command-error", IGNORE_COMMAND_ERROR_OPTION, 0, 0, + N_("ignore exit codes of children"), GRID+1 }, + {"no-ignore-command-error", NO_IGNORE_COMMAND_ERROR_OPTION, 0, 0, + N_("treat non-zero exit codes of children as error"), GRID+1 }, +#undef GRID + +#define GRID 50 {NULL, 0, NULL, 0, - N_("Handling of file attributes:"), 30 }, + N_("Handling of file attributes:"), GRID }, {"owner", OWNER_OPTION, N_("NAME"), 0, - N_("force NAME as owner for added files"), 31 }, + N_("force NAME as owner for added files"), GRID+1 }, {"group", GROUP_OPTION, N_("NAME"), 0, - N_("force NAME as group for added files"), 31 }, + N_("force NAME as group for added files"), GRID+1 }, + {"mtime", MTIME_OPTION, N_("DATE-OR-FILE"), 0, + N_("set mtime for added files from DATE-OR-FILE"), GRID+1 }, {"mode", MODE_OPTION, N_("CHANGES"), 0, - N_("force (symbolic) mode CHANGES for added files"), 31 }, - {"atime-preserve", ATIME_PRESERVE_OPTION, 0, 0, - N_("don't change access times on dumped files"), 31 }, + N_("force (symbolic) mode CHANGES for added files"), GRID+1 }, + {"atime-preserve", ATIME_PRESERVE_OPTION, + N_("METHOD"), OPTION_ARG_OPTIONAL, + N_("preserve access times on dumped files, either by restoring the times" + " after reading (METHOD='replace'; default) or by not setting the times" + " in the first place (METHOD='system')"), GRID+1 }, {"touch", 'm', 0, 0, - N_("don't extract file modified time"), 31 }, + N_("don't extract file modified time"), GRID+1 }, {"same-owner", SAME_OWNER_OPTION, 0, 0, - N_("try extracting files with the same ownership"), 31 }, + N_("try extracting files with the same ownership as exists in the archive (default for superuser)"), GRID+1 }, {"no-same-owner", NO_SAME_OWNER_OPTION, 0, 0, - N_("extract files as yourself"), 31 }, + N_("extract files as yourself (default for ordinary users)"), GRID+1 }, {"numeric-owner", NUMERIC_OWNER_OPTION, 0, 0, - N_("always use numbers for user/group names"), 31 }, + N_("always use numbers for user/group names"), GRID+1 }, {"preserve-permissions", 'p', 0, 0, - N_("extract permissions information"), 31 }, - {"same-permissions", 0, 0, OPTION_ALIAS, NULL, 31 }, + N_("extract information about file permissions (default for superuser)"), + GRID+1 }, + {"same-permissions", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"no-same-permissions", NO_SAME_PERMISSIONS_OPTION, 0, 0, - N_("do not extract permissions information"), 31 }, + N_("apply the user's umask when extracting permissions from the archive (default for ordinary users)"), GRID+1 }, {"preserve-order", 's', 0, 0, - N_("sort names to extract to match archive"), 31 }, - {"same-order", 0, 0, OPTION_ALIAS, NULL, 31 }, + N_("sort names to extract to match archive"), GRID+1 }, + {"same-order", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"preserve", PRESERVE_OPTION, 0, 0, - N_("same as both -p and -s"), 31 }, - + N_("same as both -p and -s"), GRID+1 }, + {"delay-directory-restore", DELAY_DIRECTORY_RESTORE_OPTION, 0, 0, + N_("delay setting modification times and permissions of extracted" + " directories until the end of extraction"), GRID+1 }, + {"no-delay-directory-restore", NO_DELAY_DIRECTORY_RESTORE_OPTION, 0, 0, + N_("cancel the effect of --delay-directory-restore option"), GRID+1 }, +#undef GRID + +#define GRID 60 {NULL, 0, NULL, 0, - N_("Device selection and switching:"), 40 }, - + N_("Device selection and switching:"), GRID }, + {"file", 'f', N_("ARCHIVE"), 0, - N_("use archive file or device ARCHIVE"), 41 }, + N_("use archive file or device ARCHIVE"), GRID+1 }, {"force-local", FORCE_LOCAL_OPTION, 0, 0, - N_("archive file is local even if has a colon"), 41 }, + N_("archive file is local even if it has a colon"), GRID+1 }, {"rmt-command", RMT_COMMAND_OPTION, N_("COMMAND"), 0, - N_("use given rmt COMMAND instead of rmt"), 41 }, + N_("use given rmt COMMAND instead of rmt"), GRID+1 }, {"rsh-command", RSH_COMMAND_OPTION, N_("COMMAND"), 0, - N_("use remote COMMAND instead of rsh"), 41 }, + N_("use remote COMMAND instead of rsh"), GRID+1 }, #ifdef DEVICE_PREFIX - {"-[0-7][lmh]", 0, NULL, OPTION_DOC, - N_("specify drive and density"), 41 }, -#endif - {NULL, '0', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '1', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '2', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '3', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '4', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '5', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '6', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '7', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '8', NULL, OPTION_HIDDEN, NULL, 41 }, - {NULL, '9', NULL, OPTION_HIDDEN, NULL, 41 }, - + {"-[0-7][lmh]", 0, NULL, OPTION_DOC, /* It is OK, since `name' will never be + translated */ + N_("specify drive and density"), GRID+1 }, +#endif + {NULL, '0', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '1', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '2', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '3', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '4', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '5', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '6', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '7', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '8', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {NULL, '9', NULL, OPTION_HIDDEN, NULL, GRID+1 }, + {"multi-volume", 'M', 0, 0, - N_("create/list/extract multi-volume archive"), 41 }, + N_("create/list/extract multi-volume archive"), GRID+1 }, {"tape-length", 'L', N_("NUMBER"), 0, - N_("change tape after writing NUMBER x 1024 bytes"), 41 }, + N_("change tape after writing NUMBER x 1024 bytes"), GRID+1 }, {"info-script", 'F', N_("NAME"), 0, - N_("run script at end of each tape (implies -M)"), 41 }, - {"new-volume-script", 0, 0, OPTION_ALIAS, NULL, 41 }, + N_("run script at end of each tape (implies -M)"), GRID+1 }, + {"new-volume-script", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"volno-file", VOLNO_FILE_OPTION, N_("FILE"), 0, - N_("use/update the volume number in FILE"), 41 }, + N_("use/update the volume number in FILE"), GRID+1 }, +#undef GRID +#define GRID 70 {NULL, 0, NULL, 0, - N_("Device blocking:"), 50 }, + N_("Device blocking:"), GRID }, {"blocking-factor", 'b', N_("BLOCKS"), 0, - N_("BLOCKS x 512 bytes per record"), 51 }, + N_("BLOCKS x 512 bytes per record"), GRID+1 }, {"record-size", RECORD_SIZE_OPTION, N_("NUMBER"), 0, - N_("SIZE bytes per record, multiple of 512"), 51 }, + N_("NUMBER of bytes per record, multiple of 512"), GRID+1 }, {"ignore-zeros", 'i', 0, 0, - N_("ignore zeroed blocks in archive (means EOF)"), 51 }, + N_("ignore zeroed blocks in archive (means EOF)"), GRID+1 }, {"read-full-records", 'B', 0, 0, - N_("reblock as we read (for 4.2BSD pipes)"), 51 }, + N_("reblock as we read (for 4.2BSD pipes)"), GRID+1 }, +#undef GRID +#define GRID 80 {NULL, 0, NULL, 0, - N_("Archive format selection:"), 60 }, - - {"format", 'H', N_("FORMAT"), 0, - N_("create archive of the given format."), 61 }, + N_("Archive format selection:"), GRID }, - {"", 0, NULL, OPTION_DOC, N_("FORMAT is one of the following:"), 62}, - {"", 0, NULL, OPTION_DOC, N_("v7 old V7 tar format"), 63}, - {"", 0, NULL, OPTION_DOC, N_("oldgnu GNU format as per tar <= 1.12"), 63}, - {"", 0, NULL, OPTION_DOC, N_("gnu GNU tar 1.13.x format"), 63}, - {"", 0, NULL, OPTION_DOC, N_("ustar POSIX 1003.1-1988 (ustar) format"), 63 }, - {"", 0, NULL, OPTION_DOC, N_("posix POSIX 1003.1-2001 (pax) format"), 63 }, + {"format", 'H', N_("FORMAT"), 0, + N_("create archive of the given format"), GRID+1 }, + + {NULL, 0, NULL, 0, N_("FORMAT is one of the following:"), GRID+2 }, + {" v7", 0, NULL, OPTION_DOC|OPTION_NO_TRANS, N_("old V7 tar format"), + GRID+3 }, + {" oldgnu", 0, NULL, OPTION_DOC|OPTION_NO_TRANS, + N_("GNU format as per tar <= 1.12"), GRID+3 }, + {" gnu", 0, NULL, OPTION_DOC|OPTION_NO_TRANS, + N_("GNU tar 1.13.x format"), GRID+3 }, + {" ustar", 0, NULL, OPTION_DOC|OPTION_NO_TRANS, + N_("POSIX 1003.1-1988 (ustar) format"), GRID+3 }, + {" pax", 0, NULL, OPTION_DOC|OPTION_NO_TRANS, + N_("POSIX 1003.1-2001 (pax) format"), GRID+3 }, + {" posix", 0, NULL, OPTION_DOC|OPTION_NO_TRANS, N_("same as pax"), GRID+3 }, {"old-archive", OLD_ARCHIVE_OPTION, 0, 0, /* FIXME */ - N_("same as --format=v7"), 68 }, - {"portability", 0, 0, OPTION_ALIAS, NULL, 68 }, + N_("same as --format=v7"), GRID+8 }, + {"portability", 0, 0, OPTION_ALIAS, NULL, GRID+8 }, {"posix", POSIX_OPTION, 0, 0, - N_("same as --format=posix"), 68 }, - {"pax-option", PAX_OPTION, N_("keyword[[:]=value][,keyword[[:]=value], ...]"), 0, - N_("control pax keywords"), 68 }, + N_("same as --format=posix"), GRID+8 }, + {"pax-option", PAX_OPTION, N_("keyword[[:]=value][,keyword[[:]=value]]..."), 0, + N_("control pax keywords"), GRID+8 }, {"label", 'V', N_("TEXT"), 0, - N_("create archive with volume name NAME. At list/extract time, use TEXT as a globbing pattern"), 68 }, + N_("create archive with volume name TEXT; at list/extract time, use TEXT as a globbing pattern for volume name"), GRID+8 }, +#undef GRID + +#define GRID 90 + {NULL, 0, NULL, 0, + N_("Compression options:"), GRID }, + {"auto-compress", 'a', 0, 0, + N_("use archive suffix to determine the compression program"), GRID+1 }, + {"no-auto-compress", NO_AUTO_COMPRESS_OPTION, 0, 0, + N_("do not use archive suffix to determine the compression program"), + GRID+1 }, {"bzip2", 'j', 0, 0, - N_("filter the archive through bzip2"), 68 }, + N_("filter the archive through bzip2"), GRID+1 }, {"gzip", 'z', 0, 0, - N_("filter the archive through gzip"), 68 }, - {"gunzip", 0, 0, OPTION_ALIAS, NULL, 68 }, - {"ungzip", 0, 0, OPTION_ALIAS, NULL, 68 }, + N_("filter the archive through gzip"), GRID+1 }, + {"gunzip", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, + {"ungzip", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"compress", 'Z', 0, 0, - N_("filter the archive through compress"), 68 }, - {"uncompress", 0, 0, OPTION_ALIAS, NULL, 68 }, - {"use-compress-program", USE_COMPRESS_PROGRAM_OPTION, N_("PROG"), 0, - N_("filter through PROG (must accept -d)"), 68 }, - + N_("filter the archive through compress"), GRID+1 }, + {"uncompress", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, + {"lzma", LZMA_OPTION, 0, 0, + N_("filter the archive through lzma"), GRID+1 }, + {"lzop", LZOP_OPTION, 0, 0, + N_("filter the archive through lzop"), GRID+8 }, + {"xz", 'J', 0, 0, + N_("filter the archive through xz"), GRID+8 }, + {"use-compress-program", 'I', N_("PROG"), 0, + N_("filter through PROG (must accept -d)"), GRID+1 }, +#undef GRID + +#define GRID 100 {NULL, 0, NULL, 0, - N_("Local file selection:"), 70 }, + N_("Local file selection:"), GRID }, + {"add-file", ARGP_KEY_ARG, N_("FILE"), 0, + N_("add given FILE to the archive (useful if its name starts with a dash)"), GRID+1 }, {"directory", 'C', N_("DIR"), 0, - N_("change to directory DIR"), 71 }, - {"files-from", 'T', N_("FILE-OF-NAMES"), 0, - N_("get names to extract or create from file NAME"), 71 }, + N_("change to directory DIR"), GRID+1 }, + {"files-from", 'T', N_("FILE"), 0, + N_("get names to extract or create from FILE"), GRID+1 }, {"null", NULL_OPTION, 0, 0, - N_("-T reads null-terminated names, disable -C"), 71 }, + N_("-T reads null-terminated names, disable -C"), GRID+1 }, + {"no-null", NO_NULL_OPTION, 0, 0, + N_("disable the effect of the previous --null option"), GRID+1 }, + {"unquote", UNQUOTE_OPTION, 0, 0, + N_("unquote filenames read with -T (default)"), GRID+1 }, + {"no-unquote", NO_UNQUOTE_OPTION, 0, 0, + N_("do not unquote filenames read with -T"), GRID+1 }, {"exclude", EXCLUDE_OPTION, N_("PATTERN"), 0, - N_("exclude files, given as a PATTERN"), 71 }, + N_("exclude files, given as a PATTERN"), GRID+1 }, {"exclude-from", 'X', N_("FILE"), 0, - N_("exclude patterns listed in FILE"), 71 }, - {"ignore-case", IGNORE_CASE_OPTION, 0, 0, - N_("exclusion ignores case"), 71 }, - {"anchored", ANCHORED_OPTION, 0, 0, - N_("exclude patterns match file name start"), 71 }, - {"no-anchored", NO_ANCHORED_OPTION, 0, 0, - N_("exclude patterns match after any / (default)"), 71 }, - {"no-ignore-case", NO_IGNORE_CASE_OPTION, 0, 0, - N_("exclusion is case sensitive (default)"), 71 }, - {"no-wildcards", NO_WILDCARDS_OPTION, 0, 0, - N_("exclude patterns are plain strings"), 71 }, - {"no-wildcards-match-slash", NO_WILDCARDS_MATCH_SLASH_OPTION, 0, 0, - N_("exclude pattern wildcards do not match '/'"), 71 }, + N_("exclude patterns listed in FILE"), GRID+1 }, + {"exclude-caches", EXCLUDE_CACHES_OPTION, 0, 0, + N_("exclude contents of directories containing CACHEDIR.TAG, " + "except for the tag file itself"), GRID+1 }, + {"exclude-caches-under", EXCLUDE_CACHES_UNDER_OPTION, 0, 0, + N_("exclude everything under directories containing CACHEDIR.TAG"), + GRID+1 }, + {"exclude-caches-all", EXCLUDE_CACHES_ALL_OPTION, 0, 0, + N_("exclude directories containing CACHEDIR.TAG"), GRID+1 }, + {"exclude-tag", EXCLUDE_TAG_OPTION, N_("FILE"), 0, + N_("exclude contents of directories containing FILE, except" + " for FILE itself"), GRID+1 }, + {"exclude-tag-under", EXCLUDE_TAG_UNDER_OPTION, N_("FILE"), 0, + N_("exclude everything under directories containing FILE"), GRID+1 }, + {"exclude-tag-all", EXCLUDE_TAG_ALL_OPTION, N_("FILE"), 0, + N_("exclude directories containing FILE"), GRID+1 }, + {"exclude-vcs", EXCLUDE_VCS_OPTION, NULL, 0, + N_("exclude version control system directories"), GRID+1 }, {"no-recursion", NO_RECURSION_OPTION, 0, 0, - N_("avoid descending automatically in directories"), 71 }, - {"one-file-system", 'l', 0, 0, /* FIXME: emit warning */ - N_("stay in local file system when creating archive"), 71 }, + N_("avoid descending automatically in directories"), GRID+1 }, + {"one-file-system", ONE_FILE_SYSTEM_OPTION, 0, 0, + N_("stay in local file system when creating archive"), GRID+1 }, {"recursion", RECURSION_OPTION, 0, 0, - N_("recurse into directories (default)"), 71 }, + N_("recurse into directories (default)"), GRID+1 }, {"absolute-names", 'P', 0, 0, - N_("don't strip leading `/'s from file names"), 71 }, + N_("don't strip leading `/'s from file names"), GRID+1 }, {"dereference", 'h', 0, 0, - N_("dump instead the files symlinks point to"), 71 }, + N_("follow symlinks; archive and dump the files they point to"), GRID+1 }, + {"hard-dereference", HARD_DEREFERENCE_OPTION, 0, 0, + N_("follow hard links; archive and dump the files they refer to"), GRID+1 }, {"starting-file", 'K', N_("MEMBER-NAME"), 0, - N_("begin at member MEMBER-NAME in the archive"), 71 }, - {"strip-components", STRIP_COMPONENTS_OPTION, N_("NUMBER"), 0, - N_("strip NUMBER leading components from file names"), 71 }, + N_("begin at member MEMBER-NAME in the archive"), GRID+1 }, {"newer", 'N', N_("DATE-OR-FILE"), 0, - N_("only store files newer than DATE-OR-FILE"), 71 }, + N_("only store files newer than DATE-OR-FILE"), GRID+1 }, + {"after-date", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"newer-mtime", NEWER_MTIME_OPTION, N_("DATE"), 0, - N_("compare date and time when data changed only"), 71 }, - {"after-date", 'N', N_("DATE"), 0, - N_("same as -N"), 71 }, + N_("compare date and time when data changed only"), GRID+1 }, {"backup", BACKUP_OPTION, N_("CONTROL"), OPTION_ARG_OPTIONAL, - N_("backup before removal, choose version CONTROL"), 71 }, + N_("backup before removal, choose version CONTROL"), GRID+1 }, {"suffix", SUFFIX_OPTION, N_("STRING"), 0, - N_("backup before removal, override usual suffix ('~' unless overridden by environment variable SIMPLE_BACKUP_SUFFIX"), 71 }, + N_("backup before removal, override usual suffix ('~' unless overridden by environment variable SIMPLE_BACKUP_SUFFIX)"), GRID+1 }, +#undef GRID + +#define GRID 110 + {NULL, 0, NULL, 0, + N_("File name transformations:"), GRID }, + {"strip-components", STRIP_COMPONENTS_OPTION, N_("NUMBER"), 0, + N_("strip NUMBER leading components from file names on extraction"), + GRID+1 }, + {"transform", TRANSFORM_OPTION, N_("EXPRESSION"), 0, + N_("use sed replace EXPRESSION to transform file names"), GRID+1 }, + {"xform", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, +#undef GRID + +#define GRID 120 + {NULL, 0, NULL, 0, + N_("File name matching options (affect both exclude and include patterns):"), + GRID }, + {"ignore-case", IGNORE_CASE_OPTION, 0, 0, + N_("ignore case"), GRID+1 }, + {"anchored", ANCHORED_OPTION, 0, 0, + N_("patterns match file name start"), GRID+1 }, + {"no-anchored", NO_ANCHORED_OPTION, 0, 0, + N_("patterns match after any `/' (default for exclusion)"), GRID+1 }, + {"no-ignore-case", NO_IGNORE_CASE_OPTION, 0, 0, + N_("case sensitive matching (default)"), GRID+1 }, {"wildcards", WILDCARDS_OPTION, 0, 0, - N_("exclude patterns use wildcards (default)"), 71 }, + N_("use wildcards (default for exclusion)"), GRID+1 }, + {"no-wildcards", NO_WILDCARDS_OPTION, 0, 0, + N_("verbatim string matching"), GRID+1 }, + {"no-wildcards-match-slash", NO_WILDCARDS_MATCH_SLASH_OPTION, 0, 0, + N_("wildcards do not match `/'"), GRID+1 }, {"wildcards-match-slash", WILDCARDS_MATCH_SLASH_OPTION, 0, 0, - N_("exclude pattern wildcards match '/' (default)"), 71 }, + N_("wildcards match `/' (default for exclusion)"), GRID+1 }, +#undef GRID +#define GRID 130 {NULL, 0, NULL, 0, - N_("Informative output:"), 80 }, - + N_("Informative output:"), GRID }, + {"verbose", 'v', 0, 0, - N_("verbosely list files processed"), 81 }, - {"checkpoint", CHECKPOINT_OPTION, 0, 0, - N_("display progress messages every 10th record"), 81 }, - {"check-links", CHECK_LINKS_OPTION, 0, 0, - N_("print a message if not all links are dumped"), 82 }, - {"totals", TOTALS_OPTION, 0, 0, - N_("print total bytes written while creating archive"), 82 }, + N_("verbosely list files processed"), GRID+1 }, + {"warning", WARNING_OPTION, N_("KEYWORD"), 0, + N_("warning control"), GRID+1 }, + {"checkpoint", CHECKPOINT_OPTION, N_("NUMBER"), OPTION_ARG_OPTIONAL, + N_("display progress messages every NUMBERth record (default 10)"), + GRID+1 }, + {"checkpoint-action", CHECKPOINT_ACTION_OPTION, N_("ACTION"), 0, + N_("execute ACTION on each checkpoint"), + GRID+1 }, + {"check-links", 'l', 0, 0, + N_("print a message if not all links are dumped"), GRID+1 }, + {"totals", TOTALS_OPTION, N_("SIGNAL"), OPTION_ARG_OPTIONAL, + N_("print total bytes after processing the archive; " + "with an argument - print total bytes when this SIGNAL is delivered; " + "Allowed signals are: SIGHUP, SIGQUIT, SIGINT, SIGUSR1 and SIGUSR2; " + "the names without SIG prefix are also accepted"), GRID+1 }, {"utc", UTC_OPTION, 0, 0, - N_("print file modification dates in UTC"), 82 }, + N_("print file modification dates in UTC"), GRID+1 }, {"index-file", INDEX_FILE_OPTION, N_("FILE"), 0, - N_("send verbose output to FILE"), 82 }, + N_("send verbose output to FILE"), GRID+1 }, {"block-number", 'R', 0, 0, - N_("show block number within archive with each message"), 82 }, + N_("show block number within archive with each message"), GRID+1 }, {"interactive", 'w', 0, 0, - N_("ask for confirmation for every action"), 82 }, - {"confirmation", 0, 0, OPTION_ALIAS, NULL, 82 }, + N_("ask for confirmation for every action"), GRID+1 }, + {"confirmation", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, {"show-defaults", SHOW_DEFAULTS_OPTION, 0, 0, - N_("Show tar defaults"), 82 }, + N_("show tar defaults"), GRID+1 }, {"show-omitted-dirs", SHOW_OMITTED_DIRS_OPTION, 0, 0, - N_("When listing or extracting, list each directory that does not match search criteria"), 82 }, - + N_("when listing or extracting, list each directory that does not match search criteria"), GRID+1 }, + {"show-transformed-names", SHOW_TRANSFORMED_NAMES_OPTION, 0, 0, + N_("show file or archive names after transformation"), + GRID+1 }, + {"show-stored-names", 0, 0, OPTION_ALIAS, NULL, GRID+1 }, + {"quoting-style", QUOTING_STYLE_OPTION, N_("STYLE"), 0, + N_("set name quoting style; see below for valid STYLE values"), GRID+1 }, + {"quote-chars", QUOTE_CHARS_OPTION, N_("STRING"), 0, + N_("additionally quote characters from STRING"), GRID+1 }, + {"no-quote-chars", NO_QUOTE_CHARS_OPTION, N_("STRING"), 0, + N_("disable quoting for characters from STRING"), GRID+1 }, +#undef GRID + +#define GRID 140 {NULL, 0, NULL, 0, - N_("Compatibility options:"), 90 }, + N_("Compatibility options:"), GRID }, {NULL, 'o', 0, 0, - N_("when creating, same as --old-archive. When extracting, same as --no-same-owner"), 91 }, + N_("when creating, same as --old-archive; when extracting, same as --no-same-owner"), GRID+1 }, +#undef GRID +#define GRID 150 {NULL, 0, NULL, 0, - N_("Other options:"), 100 }, + N_("Other options:"), GRID }, + + {"restrict", RESTRICT_OPTION, 0, 0, + N_("disable use of some potentially harmful options"), -1 }, - {"help", '?', 0, 0, N_("Give this help list"), -1}, - {"usage", USAGE_OPTION, 0, 0, N_("Give a short usage message"), -1}, - {"license", LICENSE_OPTION, 0, 0, N_("Print license and exit"), -1}, - {"version", VERSION_OPTION, 0, 0, N_("Print program version"), -1}, + {"help", '?', 0, 0, N_("give this help list"), -1}, + {"usage", USAGE_OPTION, 0, 0, N_("give a short usage message"), -1}, + {"version", VERSION_OPTION, 0, 0, N_("print program version"), -1}, /* FIXME -V (--label) conflicts with the default short option for --version */ - + {"HANG", HANG_OPTION, "SECS", OPTION_ARG_OPTIONAL | OPTION_HIDDEN, + N_("hang for SECS seconds (default 3600)"), 0}, +#undef GRID + {0, 0, 0, 0, 0, 0} }; -struct tar_args { - char const *textual_date_option; - int exclude_options; - bool o_option; - int pax_option; - char const *backup_suffix_string; - char const *version_control_string; - int input_files; +static char const *const atime_preserve_args[] = +{ + "replace", "system", NULL +}; + +static enum atime_preserve const atime_preserve_types[] = +{ + replace_atime_preserve, system_atime_preserve }; -static void -show_default_settings (FILE *stream) +/* Make sure atime_preserve_types has as much entries as atime_preserve_args + (minus 1 for NULL guard) */ +ARGMATCH_VERIFY (atime_preserve_args, atime_preserve_types); + +/* Wildcard matching settings */ +enum wildcards + { + default_wildcards, /* For exclusion == enable_wildcards, + for inclusion == disable_wildcards */ + disable_wildcards, + enable_wildcards + }; + +struct tar_args /* Variables used during option parsing */ +{ + struct textual_date *textual_date; /* Keeps the arguments to --newer-mtime + and/or --date option if they are + textual dates */ + enum wildcards wildcards; /* Wildcard settings (--wildcards/ + --no-wildcards) */ + int matching_flags; /* exclude_fnmatch options */ + int include_anchored; /* Pattern anchoring options used for + file inclusion */ + bool o_option; /* True if -o option was given */ + bool pax_option; /* True if --pax-option was given */ + char const *backup_suffix_string; /* --suffix option argument */ + char const *version_control_string; /* --backup option argument */ + bool input_files; /* True if some input files where given */ + int compress_autodetect; /* True if compression autodetection should + be attempted when creating archives */ +}; + + +#define MAKE_EXCL_OPTIONS(args) \ + ((((args)->wildcards != disable_wildcards) ? EXCLUDE_WILDCARDS : 0) \ + | (args)->matching_flags \ + | recursion_option) + +#define MAKE_INCL_OPTIONS(args) \ + ((((args)->wildcards == enable_wildcards) ? EXCLUDE_WILDCARDS : 0) \ + | (args)->include_anchored \ + | (args)->matching_flags \ + | recursion_option) + +void +exclude_vcs_files () { - fprintf (stream, - "--format=%s -f%s -b%d --rmt-command=%s --rsh-command=%s\n", - archive_format_string (DEFAULT_ARCHIVE_FORMAT), - DEFAULT_ARCHIVE, DEFAULT_BLOCKING, - DEFAULT_RMT_COMMAND, REMOTE_SHELL); + int i; + static char *vcs_file[] = { + /* CVS: */ + "CVS", + ".cvsignore", + /* RCS: */ + "RCS", + /* SCCS: */ + "SCCS", + /* SVN: */ + ".svn", + /* git: */ + ".git", + ".gitignore", + /* Arch: */ + ".arch-ids", + "{arch}", + "=RELEASE-ID", + "=meta-update", + "=update", + /* Bazaar */ + ".bzr", + ".bzrignore", + ".bzrtags", + /* Mercurial */ + ".hg", + ".hgignore", + ".hgtags", + /* darcs */ + "_darcs", + NULL + }; + + for (i = 0; vcs_file[i]; i++) + add_exclude (excluded, vcs_file[i], 0); +} + + +#ifdef REMOTE_SHELL +# define DECL_SHOW_DEFAULT_SETTINGS(stream, printer) \ +{ \ + printer (stream, \ + "--format=%s -f%s -b%d --quoting-style=%s --rmt-command=%s", \ + archive_format_string (DEFAULT_ARCHIVE_FORMAT), \ + DEFAULT_ARCHIVE, DEFAULT_BLOCKING, \ + quoting_style_args[DEFAULT_QUOTING_STYLE], \ + DEFAULT_RMT_COMMAND); \ + printer (stream, " --rsh-command=%s", REMOTE_SHELL); \ + printer (stream, "\n"); \ +} +#else +# define DECL_SHOW_DEFAULT_SETTINGS(stream, printer) \ +{ \ + printer (stream, \ + "--format=%s -f%s -b%d --quoting-style=%s --rmt-command=%s", \ + archive_format_string (DEFAULT_ARCHIVE_FORMAT), \ + DEFAULT_ARCHIVE, DEFAULT_BLOCKING, \ + quoting_style_args[DEFAULT_QUOTING_STYLE], \ + DEFAULT_RMT_COMMAND); \ + printer (stream, "\n"); \ } +#endif + +static void +show_default_settings (FILE *fp) + DECL_SHOW_DEFAULT_SETTINGS(fp, fprintf) + +static void +show_default_settings_fs (argp_fmtstream_t fs) + DECL_SHOW_DEFAULT_SETTINGS(fs, argp_fmtstream_printf) static void set_subcommand_option (enum subcommand subcommand) @@ -570,46 +938,358 @@ set_use_compress_program_option (const char *string) use_compress_program_option = string; } + +static RETSIGTYPE +sigstat (int signo) +{ + compute_duration (); + print_total_stats (); +#ifndef HAVE_SIGACTION + signal (signo, sigstat); +#endif +} + +static void +stat_on_signal (int signo) +{ +#ifdef HAVE_SIGACTION + struct sigaction act; + act.sa_handler = sigstat; + sigemptyset (&act.sa_mask); + act.sa_flags = 0; + sigaction (signo, &act, NULL); +#else + signal (signo, sigstat); +#endif +} void -license () +set_stat_signal (const char *name) +{ + static struct sigtab + { + char *name; + int signo; + } sigtab[] = { + { "SIGUSR1", SIGUSR1 }, + { "USR1", SIGUSR1 }, + { "SIGUSR2", SIGUSR2 }, + { "USR2", SIGUSR2 }, + { "SIGHUP", SIGHUP }, + { "HUP", SIGHUP }, + { "SIGINT", SIGINT }, + { "INT", SIGINT }, + { "SIGQUIT", SIGQUIT }, + { "QUIT", SIGQUIT } + }; + struct sigtab *p; + + for (p = sigtab; p < sigtab + sizeof (sigtab) / sizeof (sigtab[0]); p++) + if (strcmp (p->name, name) == 0) + { + stat_on_signal (p->signo); + return; + } + FATAL_ERROR ((0, 0, _("Unknown signal name: %s"), name)); +} + + +struct textual_date +{ + struct textual_date *next; + struct timespec *ts; + const char *option; + const char *date; +}; + +static void +get_date_or_file (struct tar_args *args, const char *option, + const char *str, struct timespec *ts) +{ + if (FILE_SYSTEM_PREFIX_LEN (str) != 0 + || ISSLASH (*str) + || *str == '.') + { + struct stat st; + if (deref_stat (dereference_option, str, &st) != 0) + { + stat_error (str); + USAGE_ERROR ((0, 0, _("Date sample file not found"))); + } + *ts = get_stat_mtime (&st); + } + else + { + if (! get_date (ts, str, NULL)) + { + WARN ((0, 0, _("Substituting %s for unknown date format %s"), + tartime (*ts, false), quote (str))); + ts->tv_nsec = 0; + } + else + { + struct textual_date *p = xmalloc (sizeof (*p)); + p->ts = ts; + p->option = option; + p->date = str; + p->next = args->textual_date; + args->textual_date = p; + } + } +} + +static void +report_textual_dates (struct tar_args *args) +{ + struct textual_date *p; + for (p = args->textual_date; p; ) + { + struct textual_date *next = p->next; + char const *treated_as = tartime (*p->ts, true); + if (strcmp (p->date, treated_as) != 0) + WARN ((0, 0, _("Option %s: Treating date `%s' as %s"), + p->option, p->date, treated_as)); + free (p); + p = next; + } +} + + +static volatile int _argp_hang; + +/* Either NL or NUL, as decided by the --null option. */ +static char filename_terminator; + +enum read_file_list_state /* Result of reading file name from the list file */ + { + file_list_success, /* OK, name read successfully */ + file_list_end, /* End of list file */ + file_list_zero, /* Zero separator encountered where it should not */ + file_list_skip /* Empty (zero-length) entry encountered, skip it */ + }; + +/* Read from FP a sequence of characters up to TERM and put them + into STK. + */ +static enum read_file_list_state +read_name_from_file (FILE *fp, struct obstack *stk, int term) +{ + int c; + size_t counter = 0; + + for (c = getc (fp); c != EOF && c != term; c = getc (fp)) + { + if (c == 0) + { + /* We have read a zero separator. The file possibly is + zero-separated */ + return file_list_zero; + } + obstack_1grow (stk, c); + counter++; + } + + if (counter == 0 && c != EOF) + return file_list_skip; + + obstack_1grow (stk, 0); + + return (counter == 0 && c == EOF) ? file_list_end : file_list_success; +} + + +static bool files_from_option; /* When set, tar will not refuse to create + empty archives */ +static struct obstack argv_stk; /* Storage for additional command line options + read using -T option */ + +/* Prevent recursive inclusion of the same file */ +struct file_id_list { - printf ("tar (%s) %s\n%s\n", PACKAGE_NAME, PACKAGE_VERSION, - "Copyright (C) 2004 Free Software Foundation, Inc.\n"); - puts (_("Based on the work of John Gilmore and Jay Fenlason. See AUTHORS\n\ -for complete list of authors.\n")); - printf (_(" GNU tar is free software; you can redistribute it and/or modify\n" - " it under the terms of the GNU General Public License as published by\n" - " the Free Software Foundation; either version 2 of the License, or\n" - " (at your option) any later version.\n" - "\n" - " GNU tar is distributed in the hope that it will be useful,\n" - " but WITHOUT ANY WARRANTY; without even the implied warranty of\n" - " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" - " GNU General Public License for more details.\n" - "\n" - " You should have received a copy of the GNU General Public License\n" - " along with GNU tar; if not, write to the Free Software\n" - " Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\n\n")); - exit (0); + struct file_id_list *next; + ino_t ino; + dev_t dev; +}; + +static struct file_id_list *file_id_list; + +static void +add_file_id (const char *filename) +{ + struct file_id_list *p; + struct stat st; + + if (stat (filename, &st)) + stat_fatal (filename); + for (p = file_id_list; p; p = p->next) + if (p->ino == st.st_ino && p->dev == st.st_dev) + { + FATAL_ERROR ((0, 0, _("%s: file list already read"), + quotearg_colon (filename))); + } + p = xmalloc (sizeof *p); + p->next = file_id_list; + p->ino = st.st_ino; + p->dev = st.st_dev; + file_id_list = p; } +/* Default density numbers for [0-9][lmh] device specifications */ + +#ifndef LOW_DENSITY_NUM +# define LOW_DENSITY_NUM 0 +#endif + +#ifndef MID_DENSITY_NUM +# define MID_DENSITY_NUM 8 +#endif + +#ifndef HIGH_DENSITY_NUM +# define HIGH_DENSITY_NUM 16 +#endif + +static void +update_argv (const char *filename, struct argp_state *state) +{ + FILE *fp; + size_t count = 0, i; + char *start, *p; + char **new_argv; + size_t new_argc; + bool is_stdin = false; + enum read_file_list_state read_state; + int term = filename_terminator; + + if (!strcmp (filename, "-")) + { + is_stdin = true; + request_stdin ("-T"); + fp = stdin; + } + else + { + add_file_id (filename); + if ((fp = fopen (filename, "r")) == NULL) + open_fatal (filename); + } + + while ((read_state = read_name_from_file (fp, &argv_stk, term)) + != file_list_end) + { + switch (read_state) + { + case file_list_success: + count++; + break; + + case file_list_end: /* won't happen, just to pacify gcc */ + break; + + case file_list_zero: + { + size_t size; + + WARNOPT (WARN_FILENAME_WITH_NULS, + (0, 0, N_("%s: file name read contains nul character"), + quotearg_colon (filename))); + + /* Prepare new stack contents */ + size = obstack_object_size (&argv_stk); + p = obstack_finish (&argv_stk); + for (; size > 0; size--, p++) + if (*p) + obstack_1grow (&argv_stk, *p); + else + obstack_1grow (&argv_stk, '\n'); + obstack_1grow (&argv_stk, 0); + count = 1; + /* Read rest of files using new filename terminator */ + term = 0; + break; + } + + case file_list_skip: + break; + } + } + + if (!is_stdin) + fclose (fp); + + if (count == 0) + return; + + start = obstack_finish (&argv_stk); + + if (term == 0) + for (p = start; *p; p += strlen (p) + 1) + if (p[0] == '-') + count++; + + new_argc = state->argc + count; + new_argv = xmalloc (sizeof (state->argv[0]) * (new_argc + 1)); + memcpy (new_argv, state->argv, sizeof (state->argv[0]) * (state->argc + 1)); + state->argv = new_argv; + memmove (&state->argv[state->next + count], &state->argv[state->next], + (state->argc - state->next + 1) * sizeof (state->argv[0])); + + state->argc = new_argc; + + for (i = state->next, p = start; *p; p += strlen (p) + 1, i++) + { + if (term == 0 && p[0] == '-') + state->argv[i++] = "--add-file"; + state->argv[i] = p; + } +} + + +static void +tar_help (struct argp_state *state) +{ + argp_fmtstream_t fs; + state->flags |= ARGP_NO_EXIT; + argp_state_help (state, state->out_stream, + ARGP_HELP_STD_HELP & ~ARGP_HELP_BUG_ADDR); + /* FIXME: use struct uparams.rmargin (from argp-help.c) instead of 79 */ + fs = argp_make_fmtstream (state->out_stream, 0, 79, 0); + + argp_fmtstream_printf (fs, "\n%s\n\n", + _("Valid arguments for --quoting-style options are:")); + tar_list_quoting_styles (fs, " "); + + argp_fmtstream_puts (fs, _("\n*This* tar defaults to:\n")); + show_default_settings_fs (fs); + argp_fmtstream_putc (fs, '\n'); + argp_fmtstream_printf (fs, _("Report bugs to %s.\n"), + argp_program_bug_address); + argp_fmtstream_free (fs); +} + static error_t -parse_opt(int key, char *arg, struct argp_state *state) +parse_opt (int key, char *arg, struct argp_state *state) { struct tar_args *args = state->input; - + switch (key) { - case 1: - /* File name or non-parsed option, because of ARGP_IN_ORDER */ - name_add (optarg); - args->input_files++; - break; + case ARGP_KEY_ARG: + /* File name or non-parsed option, because of ARGP_IN_ORDER */ + name_add_name (arg, MAKE_INCL_OPTIONS (args)); + args->input_files = true; + break; case 'A': set_subcommand_option (CAT_SUBCOMMAND); break; + + case 'a': + args->compress_autodetect = true; + break; + + case NO_AUTO_COMPRESS_OPTION: + args->compress_autodetect = false; + break; case 'b': { @@ -625,12 +1305,12 @@ parse_opt(int key, char *arg, struct argp_state *state) case 'B': /* Try to reblock input records. For reading 4.2BSD pipes. */ - + /* 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 and most BSD-derived systems. This is a consequence of the block/record terminology confusion. */ - + read_full_records_option = true; break; @@ -639,8 +1319,7 @@ parse_opt(int key, char *arg, struct argp_state *state) break; case 'C': - name_add ("-C"); - name_add (arg); + name_add_dir (arg); break; case 'd': @@ -649,76 +1328,79 @@ parse_opt(int key, char *arg, struct argp_state *state) 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 = x2nrealloc (archive_name_array, + &allocated_archive_names, + sizeof (archive_name_array[0])); + archive_name_array[archive_names++] = arg; 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 = arg; multi_volume_option = true; break; - + case 'g': listed_incremental_option = arg; 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 HARD_DEREFERENCE_OPTION: + hard_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 'J': + set_use_compress_program_option ("xz"); + break; case 'k': /* Don't replace existing files. */ old_files_option = KEEP_OLD_FILES; break; - + case 'K': starting_file_option = true; - addname (arg, 0); + addname (arg, 0, NULL); break; - - case 'l': + + case ONE_FILE_SYSTEM_OPTION: /* When dumping directories, don't dump files/subdirectories - that are on other filesystems. */ - + that are on other filesystems. */ one_file_system_option = true; break; - + + case 'l': + check_links_option = 1; + break; + case 'L': { uintmax_t u; @@ -729,23 +1411,44 @@ parse_opt(int key, char *arg, struct argp_state *state) multi_volume_option = true; } break; + + case LEVEL_OPTION: + { + char *p; + incremental_level = strtoul (arg, &p, 10); + if (*p) + USAGE_ERROR ((0, 0, _("Invalid incremental level value"))); + } + break; + + case LZMA_OPTION: + set_use_compress_program_option ("lzma"); + break; + + case LZOP_OPTION: + set_use_compress_program_option ("lzop"); + break; case 'm': touch_option = true; break; - + case 'M': /* Make multivolume archive: when we can't write any more into the archive, re-open it, and continue writing. */ - + multi_volume_option = true; break; + case MTIME_OPTION: + get_date_or_file (args, "--mtime", arg, &mtime_option); + set_mtime_option = true; + break; + case 'n': seekable_archive = true; break; - -#if !MSDOS + case 'N': after_date_option = true; /* Fall through. */ @@ -753,39 +1456,15 @@ parse_opt(int key, char *arg, struct argp_state *state) case NEWER_MTIME_OPTION: if (NEWER_OPTION_INITIALIZED (newer_mtime_option)) USAGE_ERROR ((0, 0, _("More than one threshold date"))); - - if (FILE_SYSTEM_PREFIX_LEN (arg) != 0 - || ISSLASH (*arg) - || *arg == '.') - { - struct stat st; - if (deref_stat (dereference_option, arg, &st) != 0) - { - stat_error (arg); - 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, arg, NULL)) - { - WARN ((0, 0, _("Substituting %s for unknown date format %s"), - tartime (newer_mtime_option.tv_sec), quote (arg))); - newer_mtime_option.tv_nsec = 0; - } - else - args->textual_date_option = arg; - } - + get_date_or_file (args, + key == NEWER_MTIME_OPTION ? "--newer-mtime" + : "--after-date", arg, &newer_mtime_option); break; -#endif /* not MSDOS */ - + case 'o': args->o_option = true; break; - + case 'O': to_stdout_option = true; break; @@ -793,111 +1472,166 @@ parse_opt(int key, char *arg, struct argp_state *state) case 'p': same_permissions_option = true; break; - + case 'P': absolute_names_option = true; break; - + case 'r': set_subcommand_option (APPEND_SUBCOMMAND); break; - + case 'R': /* Print block numbers for debugging bad tar archives. */ - + /* 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 + that -B has been used for a long while in Sun tar and most BSD-derived systems. This is a consequence of the block/record terminology confusion. */ - + block_number_option = true; break; - + case 's': - /* Names to extr are sorted. */ - + /* Names to extract are sorted. */ + same_order_option = true; break; - + case 'S': sparse_option = true; break; - + + case SPARSE_VERSION_OPTION: + sparse_option = true; + { + char *p; + tar_sparse_major = strtoul (arg, &p, 10); + if (*p) + { + if (*p != '.') + USAGE_ERROR ((0, 0, _("Invalid sparse version value"))); + tar_sparse_minor = strtoul (p + 1, &p, 10); + if (*p) + USAGE_ERROR ((0, 0, _("Invalid sparse version value"))); + } + } + break; + case 't': set_subcommand_option (LIST_SUBCOMMAND); verbose_option++; break; + case TEST_LABEL_OPTION: + set_subcommand_option (LIST_SUBCOMMAND); + test_label_option = true; + break; + case 'T': - files_from_option = arg; + update_argv (arg, state); + /* Indicate we've been given -T option. This is for backward + compatibility only, so that `tar cfT archive /dev/null will + succeed */ + files_from_option = true; break; - + case 'u': set_subcommand_option (UPDATE_SUBCOMMAND); break; - + case 'U': old_files_option = UNLINK_FIRST_OLD_FILES; break; - + case UTC_OPTION: utc_option = true; break; - + case 'v': verbose_option++; + warning_option |= WARN_VERBOSE_WARNINGS; break; - + case 'V': volume_label_option = arg; break; - + case 'w': interactive_option = true; break; - + case 'W': verify_option = true; break; - + case 'x': set_subcommand_option (EXTRACT_SUBCOMMAND); break; - + case 'X': if (add_exclude_file (add_exclude, excluded, arg, - args->exclude_options | recursion_option, '\n') + MAKE_EXCL_OPTIONS (args), '\n') != 0) { int e = errno; FATAL_ERROR ((0, e, "%s", quotearg_colon (arg))); } 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: - args->exclude_options |= EXCLUDE_ANCHORED; + args->matching_flags |= EXCLUDE_ANCHORED; break; - + case ATIME_PRESERVE_OPTION: - atime_preserve_option = true; + atime_preserve_option = + (arg + ? XARGMATCH ("--atime-preserve", arg, + atime_preserve_args, atime_preserve_types) + : replace_atime_preserve); + if (! O_NOATIME && atime_preserve_option == system_atime_preserve) + FATAL_ERROR ((0, 0, + _("--atime-preserve='system' is not supported" + " on this platform"))); + break; + + case CHECK_DEVICE_OPTION: + check_device_option = true; + break; + + case NO_CHECK_DEVICE_OPTION: + check_device_option = false; break; case CHECKPOINT_OPTION: - checkpoint_option = true; + if (arg) + { + char *p; + + if (*arg == '.') + { + checkpoint_compile_action ("."); + arg++; + } + checkpoint_option = strtoul (arg, &p, 0); + if (*p) + FATAL_ERROR ((0, 0, + _("--checkpoint value is not an integer"))); + } + else + checkpoint_option = DEFAULT_CHECKPOINT; + break; + + case CHECKPOINT_ACTION_OPTION: + checkpoint_compile_action (arg); break; case BACKUP_OPTION: @@ -905,39 +1639,82 @@ parse_opt(int key, char *arg, struct argp_state *state) if (arg) args->version_control_string = arg; break; - + + case DELAY_DIRECTORY_RESTORE_OPTION: + delay_directory_restore_option = true; + break; + + case NO_DELAY_DIRECTORY_RESTORE_OPTION: + delay_directory_restore_option = false; + break; + case DELETE_OPTION: set_subcommand_option (DELETE_SUBCOMMAND); break; - + case EXCLUDE_OPTION: - add_exclude (excluded, arg, args->exclude_options | recursion_option); + add_exclude (excluded, arg, MAKE_EXCL_OPTIONS (args)); + break; + + case EXCLUDE_CACHES_OPTION: + add_exclusion_tag ("CACHEDIR.TAG", exclusion_tag_contents, + cachedir_file_p); + break; + + case EXCLUDE_CACHES_UNDER_OPTION: + add_exclusion_tag ("CACHEDIR.TAG", exclusion_tag_under, + cachedir_file_p); + break; + + case EXCLUDE_CACHES_ALL_OPTION: + add_exclusion_tag ("CACHEDIR.TAG", exclusion_tag_all, + cachedir_file_p); + break; + + case EXCLUDE_TAG_OPTION: + add_exclusion_tag (arg, exclusion_tag_contents, NULL); + break; + + case EXCLUDE_TAG_UNDER_OPTION: + add_exclusion_tag (arg, exclusion_tag_under, NULL); + break; + + case EXCLUDE_TAG_ALL_OPTION: + add_exclusion_tag (arg, exclusion_tag_all, NULL); + break; + + case EXCLUDE_VCS_OPTION: + exclude_vcs_files (); break; case FORCE_LOCAL_OPTION: force_local_option = true; break; - + case 'H': set_archive_format (arg); break; - + case INDEX_FILE_OPTION: index_file_name = arg; break; - + case IGNORE_CASE_OPTION: - args->exclude_options |= FNM_CASEFOLD; + args->matching_flags |= FNM_CASEFOLD; break; - + + case IGNORE_COMMAND_ERROR_OPTION: + ignore_command_error_option = true; + 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 (arg) < GNAME_FIELD_SIZE && gname_to_gid (arg, &group_option))) @@ -951,45 +1728,57 @@ parse_opt(int key, char *arg, struct argp_state *state) _("%s: Invalid group"))); } break; - + case MODE_OPTION: - mode_option - = mode_compile (arg, - MODE_MASK_EQUALS | MODE_MASK_PLUS | MODE_MASK_MINUS); - if (mode_option == MODE_INVALID) + mode_option = mode_compile (arg); + if (!mode_option) FATAL_ERROR ((0, 0, _("Invalid mode given on option"))); - if (mode_option == MODE_MEMORY_EXHAUSTED) - xalloc_die (); + initial_umask = umask (0); + umask (initial_umask); break; - + case NO_ANCHORED_OPTION: - args->exclude_options &= ~ EXCLUDE_ANCHORED; + args->include_anchored = 0; /* Clear the default for comman line args */ + args->matching_flags &= ~ EXCLUDE_ANCHORED; break; - + case NO_IGNORE_CASE_OPTION: - args->exclude_options &= ~ FNM_CASEFOLD; + args->matching_flags &= ~ FNM_CASEFOLD; break; - + + case NO_IGNORE_COMMAND_ERROR_OPTION: + ignore_command_error_option = false; + break; + case NO_OVERWRITE_DIR_OPTION: old_files_option = NO_OVERWRITE_DIR_OLD_FILES; break; - + + case NO_QUOTE_CHARS_OPTION: + for (;*arg; arg++) + set_char_quoting (NULL, *arg, 0); + break; + case NO_WILDCARDS_OPTION: - args->exclude_options &= ~ EXCLUDE_WILDCARDS; + args->wildcards = disable_wildcards; break; - + case NO_WILDCARDS_MATCH_SLASH_OPTION: - args->exclude_options |= FNM_FILE_NAME; + args->matching_flags |= FNM_FILE_NAME; break; - + case NULL_OPTION: filename_terminator = '\0'; break; - + + case NO_NULL_OPTION: + filename_terminator = '\n'; + break; + case NUMERIC_OWNER_OPTION: numeric_owner_option = true; break; - + case OCCURRENCE_OPTION: if (!arg) occurrence_option = 1; @@ -1003,7 +1792,11 @@ parse_opt(int key, char *arg, struct argp_state *state) _("Invalid number"))); } break; - + + case OVERWRITE_DIR_OPTION: + old_files_option = DEFAULT_OLD_FILES; + break; + case OVERWRITE_OPTION: old_files_option = OVERWRITE_OLD_FILES; break; @@ -1021,21 +1814,33 @@ parse_opt(int key, char *arg, struct argp_state *state) _("Invalid owner"))); } break; - + + case QUOTE_CHARS_OPTION: + for (;*arg; arg++) + set_char_quoting (NULL, *arg, 1); + break; + + case QUOTING_STYLE_OPTION: + tar_set_quoting_style (arg); + break; + case PAX_OPTION: - args->pax_option++; + args->pax_option = true; xheader_set_option (arg); break; - + case POSIX_OPTION: set_archive_format ("posix"); break; - + case PRESERVE_OPTION: + /* FIXME: What it is good for? */ same_permissions_option = true; same_order_option = true; + WARN ((0, 0, _("The --preserve option is deprecated, " + "use --preserve-permissions --preserve-order instead"))); break; - + case RECORD_SIZE_OPTION: { uintmax_t u; @@ -1050,27 +1855,32 @@ parse_opt(int key, char *arg, struct argp_state *state) blocking_factor = record_size / BLOCKSIZE; } break; - + case RECURSIVE_UNLINK_OPTION: recursive_unlink_option = true; break; - + case REMOVE_FILES_OPTION: remove_files_option = true; break; - + + case RESTRICT_OPTION: + restrict_option = true; + break; + case RMT_COMMAND_OPTION: - rmt_command_option = arg; + rmt_command = arg; break; - + case RSH_COMMAND_OPTION: rsh_command_option = arg; break; - + case SHOW_DEFAULTS_OPTION: show_default_settings (stdout); - exit(0); - + close_stdout (); + exit (0); + case STRIP_COMPONENTS_OPTION: { uintmax_t u; @@ -1085,36 +1895,49 @@ parse_opt(int key, char *arg, struct argp_state *state) case SHOW_OMITTED_DIRS_OPTION: show_omitted_dirs_option = true; break; - + + case SHOW_TRANSFORMED_NAMES_OPTION: + show_transformed_names_option = true; + break; + case SUFFIX_OPTION: backup_option = true; args->backup_suffix_string = arg; break; - + + case TO_COMMAND_OPTION: + if (to_command_option) + USAGE_ERROR ((0, 0, _("Only one --to-command option allowed"))); + to_command_option = arg; + break; + case TOTALS_OPTION: - totals_option = true; + if (arg) + set_stat_signal (arg); + else + totals_option = true; break; - - case USE_COMPRESS_PROGRAM_OPTION: + + case TRANSFORM_OPTION: + set_transform_expr (arg); + break; + + case 'I': set_use_compress_program_option (arg); break; - + case VOLNO_FILE_OPTION: volno_file_option = arg; break; - + case WILDCARDS_OPTION: - args->exclude_options |= EXCLUDE_WILDCARDS; + args->wildcards = enable_wildcards; break; - + case WILDCARDS_MATCH_SLASH_OPTION: - args->exclude_options &= ~ FNM_FILE_NAME; + args->matching_flags &= ~ FNM_FILE_NAME; break; - case CHECK_LINKS_OPTION: - check_links_option = 1; - break; - case NO_RECURSION_OPTION: recursion_option = 0; break; @@ -1134,6 +1957,18 @@ parse_opt(int key, char *arg, struct argp_state *state) case SAME_OWNER_OPTION: same_owner_option = 1; break; + + case UNQUOTE_OPTION: + unquote_option = true; + break; + + case NO_UNQUOTE_OPTION: + unquote_option = false; + break; + + case WARNING_OPTION: + set_warning_option (arg); + break; case '0': case '1': @@ -1152,88 +1987,73 @@ parse_opt(int key, char *arg, struct argp_state *state) char *cursor; if (arg[1]) - argp_error (state, _("Malformed density argument: '%s'"), arg); - + argp_error (state, _("Malformed density argument: %s"), quote (arg)); + strcpy (buf, DEVICE_PREFIX); cursor = buf + strlen (buf); #ifdef DENSITY_LETTER sprintf (cursor, "%d%c", device, arg[0]); - + #else /* not DENSITY_LETTER */ switch (arg[0]) { case 'l': -#ifdef LOW_NUM - device += LOW_NUM; -#endif + device += LOW_DENSITY_NUM; break; - + case 'm': -#ifdef MID_NUM - device += MID_NUM; -#else - device += 8; -#endif + device += MID_DENSITY_NUM; break; - + case 'h': -#ifdef HGH_NUM - device += HGH_NUM; -#else - device += 16; -#endif + device += HIGH_DENSITY_NUM; break; default: - argp_error (state, _("Unknown density: '%c'"), arg[0]); + argp_error (state, _("Unknown density: `%c'"), arg[0]); } sprintf (cursor, "%d", device); - + #endif /* not DENSITY_LETTER */ 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++] = strdup (buf); + archive_name_array = x2nrealloc (archive_name_array, + &allocated_archive_names, + sizeof (archive_name_array[0])); + archive_name_array[archive_names++] = xstrdup (buf); } break; #else /* not DEVICE_PREFIX */ - argp_error (state, + argp_error (state, _("Options `-[0-7][lmh]' not supported by *this* tar")); - + #endif /* not DEVICE_PREFIX */ - + case '?': - state->flags |= ARGP_NO_EXIT; - argp_state_help (state, state->out_stream, - ARGP_HELP_STD_HELP & ~ARGP_HELP_BUG_ADDR); - fprintf (state->out_stream, _("\n*This* tar defaults to:\n")); - show_default_settings (state->out_stream); - fprintf (state->out_stream, "\n"); - fprintf (state->out_stream, _("Report bugs to %s.\n"), - argp_program_bug_address); + tar_help (state); + close_stdout (); exit (0); case USAGE_OPTION: - argp_state_help (state, state->out_stream, - ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK); - break; + argp_state_help (state, state->out_stream, ARGP_HELP_USAGE); + close_stdout (); + exit (0); case VERSION_OPTION: - fprintf (state->out_stream, "%s\n", argp_program_version); + version_etc (state->out_stream, "tar", PACKAGE_NAME, VERSION, + "John Gilmore", "Jay Fenlason", (char *) NULL); + close_stdout (); exit (0); - case LICENSE_OPTION: - license (); + case HANG_OPTION: + _argp_hang = atoi (arg ? arg : "3600"); + while (_argp_hang-- > 0) + sleep (1); break; default: @@ -1255,41 +2075,45 @@ static struct argp argp = { void usage (int status) { - argp_help (&argp, stderr, ARGP_HELP_SEE, program_name); + argp_help (&argp, stderr, ARGP_HELP_SEE, (char*) program_name); + close_stdout (); exit (status); } /* Parse the options for tar. */ static struct argp_option * -find_argp_option (struct argp_option *options, int letter) +find_argp_option (struct argp_option *o, int letter) { for (; - !(options->name == NULL - && options->key == 0 - && options->arg == 0 - && options->flags == 0 - && options->doc == NULL); options++) - if (options->key == letter) - return options; + !(o->name == NULL + && o->key == 0 + && o->arg == 0 + && o->flags == 0 + && o->doc == NULL); o++) + if (o->key == letter) + return o; return NULL; } static void decode_options (int argc, char **argv) { - int index; + int idx; struct tar_args args; - + /* Set some default option values. */ - args.textual_date_option = NULL; - args.exclude_options = EXCLUDE_WILDCARDS; - args.o_option = 0; - args.pax_option = 0; + args.textual_date = NULL; + args.wildcards = default_wildcards; + args.matching_flags = 0; + args.include_anchored = EXCLUDE_ANCHORED; + args.o_option = false; + args.pax_option = false; args.backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX"); args.version_control_string = 0; - args.input_files = 0; - + args.input_files = false; + args.compress_autodetect = false; + subcommand_option = UNKNOWN_SUBCOMMAND; archive_format = DEFAULT_FORMAT; blocking_factor = DEFAULT_BLOCKING; @@ -1298,10 +2122,17 @@ decode_options (int argc, char **argv) newer_mtime_option.tv_sec = TYPE_MINIMUM (time_t); newer_mtime_option.tv_nsec = -1; recursion_option = FNM_LEADING_DIR; + unquote_option = true; + tar_sparse_major = 1; + tar_sparse_minor = 0; owner_option = -1; group_option = -1; + check_device_option = true; + + incremental_level = -1; + /* Convert old-style tar call by exploding option element and rearranging options accordingly. */ @@ -1333,7 +2164,7 @@ decode_options (int argc, char **argv) for (letter = *in++; *letter; letter++) { struct argp_option *opt; - + buffer[1] = *letter; *out++ = xstrdup (buffer); opt = find_argp_option (options, *letter); @@ -1364,9 +2195,9 @@ decode_options (int argc, char **argv) prepend_default_options (getenv ("TAR_OPTIONS"), &argc, &argv); if (argp_parse (&argp, argc, argv, ARGP_IN_ORDER|ARGP_NO_HELP, - &index, &args)) - exit (1); /* FIXME */ - + &idx, &args)) + exit (TAREXIT_FAILURE); + /* Special handling for 'o' option: @@ -1387,17 +2218,21 @@ decode_options (int argc, char **argv) else { /* UNIX98 compatibility */ - same_owner_option = 1; + same_owner_option = -1; } } /* Handle operands after any "--" argument. */ - for (; index < argc; index++) + for (; idx < argc; idx++) { - name_add (argv[index]); - args.input_files++; + name_add_name (argv[idx], MAKE_INCL_OPTIONS (&args)); + args.input_files = true; } + /* Warn about implicit use of the wildcards in command line arguments. + See TODO */ + warn_regex_usage = args.wildcards == default_wildcards; + /* Derive option values and check option consistency. */ if (archive_format == DEFAULT_FORMAT) @@ -1408,22 +2243,17 @@ decode_options (int argc, char **argv) archive_format = DEFAULT_ARCHIVE_FORMAT; } - if (volume_label_option && subcommand_option == CREATE_SUBCOMMAND) - assert_format (FORMAT_MASK (OLDGNU_FORMAT) - | FORMAT_MASK (GNU_FORMAT)); - - - if (incremental_option || multi_volume_option) - assert_format (FORMAT_MASK (OLDGNU_FORMAT) | FORMAT_MASK (GNU_FORMAT)); - - if (sparse_option) + if ((volume_label_option && subcommand_option == CREATE_SUBCOMMAND) + || incremental_option + || multi_volume_option + || sparse_option) assert_format (FORMAT_MASK (OLDGNU_FORMAT) | FORMAT_MASK (GNU_FORMAT) | FORMAT_MASK (POSIX_FORMAT)); if (occurrence_option) { - if (!args.input_files && !files_from_option) + if (!args.input_files) USAGE_ERROR ((0, 0, _("--occurrence is meaningless without a file list"))); if (subcommand_option != DELETE_SUBCOMMAND @@ -1434,6 +2264,18 @@ decode_options (int argc, char **argv) _("--occurrence cannot be used in the requested operation mode"))); } + if (seekable_archive && subcommand_option == DELETE_SUBCOMMAND) + { + /* The current code in delete.c is based on the assumption that + skip_member() reads all data from the archive. So, we should + make sure it won't use seeks. On the other hand, the same code + depends on the ability to backspace a record in the archive, + so setting seekable_archive to false is technically incorrect. + However, it is tested only in skip_member(), so it's not a + problem. */ + seekable_archive = false; + } + if (archive_names == 0) { /* If no archive file name given, try TAPE from the environment, or @@ -1455,25 +2297,33 @@ decode_options (int argc, char **argv) && NEWER_OPTION_INITIALIZED (newer_mtime_option)) USAGE_ERROR ((0, 0, _("Cannot combine --listed-incremental with --newer"))); - + if (incremental_level != -1 && !listed_incremental_option) + WARN ((0, 0, + _("--level is meaningless without --listed-incremental"))); + if (volume_label_option) { - 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)); + if (archive_format == GNU_FORMAT || archive_format == OLDGNU_FORMAT) + { + 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)); + } + /* else FIXME + Label length in PAX format is limited by the volume size. */ } if (verify_option) @@ -1488,8 +2338,12 @@ decode_options (int argc, char **argv) { if (multi_volume_option) USAGE_ERROR ((0, 0, _("Cannot use multi-volume compressed archives"))); - if (subcommand_option == UPDATE_SUBCOMMAND) + if (subcommand_option == UPDATE_SUBCOMMAND + || subcommand_option == APPEND_SUBCOMMAND + || subcommand_option == DELETE_SUBCOMMAND) USAGE_ERROR ((0, 0, _("Cannot update compressed archives"))); + if (subcommand_option == CAT_SUBCOMMAND) + USAGE_ERROR ((0, 0, _("Cannot concatenate compressed archives"))); } /* It is no harm to use --pax-option on non-pax archives in archive @@ -1507,11 +2361,23 @@ decode_options (int argc, char **argv) if (recursive_unlink_option) old_files_option = UNLINK_FIRST_OLD_FILES; - if (utc_option) + + if (test_label_option) + { + /* --test-label is silent if the user has specified the label name to + compare against. */ + if (!args.input_files) + verbose_option++; + } + else if (utc_option) verbose_option = 2; - if (!rmt_command_option) - rmt_command_option = DEFAULT_RMT_COMMAND; + if (tape_length_option && tape_length_option < record_size) + USAGE_ERROR ((0, 0, _("Volume length cannot be less than record size"))); + + if (same_order_option && listed_incremental_option) + USAGE_ERROR ((0, 0, _("--preserve-order is not compatible with " + "--listed-incremental"))); /* Forbid using -c with no input files whatsoever. Check that `-f -', explicit or implied, is used correctly. */ @@ -1519,9 +2385,13 @@ decode_options (int argc, char **argv) switch (subcommand_option) { case CREATE_SUBCOMMAND: - if (args.input_files == 0 && !files_from_option) + if (!args.input_files && !files_from_option) USAGE_ERROR ((0, 0, _("Cowardly refusing to create an empty archive"))); + if (args.compress_autodetect && archive_names + && strcmp (archive_name_array[0], "-")) + set_comression_program_by_suffix (archive_name_array[0], + use_compress_program_option); break; case EXTRACT_SUBCOMMAND: @@ -1548,6 +2418,16 @@ decode_options (int argc, char **argv) break; } + /* Initialize stdlis */ + if (index_file_name) + { + stdlis = fopen (index_file_name, "w"); + if (! stdlis) + open_error (index_file_name); + } + else + stdlis = to_stdout_option ? stderr : stdout; + archive_name_cursor = archive_name_array; /* Prepare for generating backup names. */ @@ -1556,21 +2436,18 @@ decode_options (int argc, char **argv) simple_backup_suffix = xstrdup (args.backup_suffix_string); if (backup_option) - backup_type = xget_version ("--backup", args.version_control_string); - - if (verbose_option && args.textual_date_option) { - /* 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 (args.textual_date_option, treated_as) != 0) - WARN ((0, 0, - ngettext ("Treating date `%s' as %s + %ld nanosecond", - "Treating date `%s' as %s + %ld nanoseconds", - newer_mtime_option.tv_nsec), - args.textual_date_option, treated_as, - newer_mtime_option.tv_nsec)); + backup_type = xget_version ("--backup", args.version_control_string); + /* No backup is needed either if explicitely disabled or if + the extracted files are not being written to disk. */ + if (backup_type == no_backups || EXTRACT_OVER_PIPE) + backup_option = false; } + + checkpoint_finish_compile (); + + if (verbose_option) + report_textual_dates (&args); } @@ -1580,18 +2457,20 @@ decode_options (int argc, char **argv) int main (int argc, char **argv) { -#if HAVE_CLOCK_GETTIME - if (clock_gettime (CLOCK_REALTIME, &start_timespec) != 0) -#endif - start_time = time (0); + set_start_time (); program_name = argv[0]; + setlocale (LC_ALL, ""); bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); + exit_failure = TAREXIT_FAILURE; exit_status = TAREXIT_SUCCESS; filename_terminator = '\n'; - set_quoting_style (0, escape_quoting_style); + set_quoting_style (0, DEFAULT_QUOTING_STYLE); + + /* Make sure we have first three descriptors available */ + stdopen (); /* Pre-allocate a few structures. */ @@ -1600,16 +2479,20 @@ main (int argc, char **argv) xmalloc (sizeof (const char *) * allocated_archive_names); archive_names = 0; -#ifdef SIGCHLD + obstack_init (&argv_stk); + + /* Ensure default behavior for some signals */ + signal (SIGPIPE, SIG_DFL); /* System V fork+wait does not work if SIGCHLD is ignored. */ signal (SIGCHLD, SIG_DFL); -#endif - - init_names (); + /* Try to disable the ability to unlink a directory. */ + priv_set_remove_linkdir (); + /* Decode options. */ decode_options (argc, argv); + name_init (); /* Main command execution. */ @@ -1635,10 +2518,6 @@ main (int argc, char **argv) case CREATE_SUBCOMMAND: create_archive (); - name_close (); - - if (totals_option) - print_total_written (); break; case EXTRACT_SUBCOMMAND: @@ -1661,6 +2540,9 @@ main (int argc, char **argv) break; } + if (totals_option) + print_total_stats (); + if (check_links_option) check_links (); @@ -1672,12 +2554,14 @@ main (int argc, char **argv) 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) + error (0, 0, _("Exiting with failure status due to previous errors")); + + if (stdlis == stdout) + close_stdout (); + else if (ferror (stderr) || fclose (stderr) != 0) exit_status = TAREXIT_FAILURE; + return exit_status; } @@ -1696,5 +2580,21 @@ tar_stat_destroy (struct tar_stat_info *st) free (st->uname); free (st->gname); free (st->sparse_map); + free (st->dumpdir); + xheader_destroy (&st->xhdr); memset (st, 0, sizeof (*st)); } + +/* Format mask for all available formats that support nanosecond + timestamp resolution. */ +#define NS_PRECISION_FORMAT_MASK FORMAT_MASK (POSIX_FORMAT) + +/* Same as timespec_cmp, but ignore nanoseconds if current archive + format does not provide sufficient resolution. */ +int +tar_timespec_cmp (struct timespec a, struct timespec b) +{ + if (!(FORMAT_MASK (current_format) & NS_PRECISION_FORMAT_MASK)) + a.tv_nsec = b.tv_nsec = 0; + return timespec_cmp (a, b); +}