X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Ftar.c;h=35121ff28430bcd7f776c67427bf19e7cd0cb62d;hb=137ebf41fd97baa7e4f2a66e0da0bdb182ca6f7b;hp=0375c41bbe3946a4547200a2918aefd2cf2898e5;hpb=f9bd340c1bdcb47ce99e33bc995ef28de5f6d2eb;p=chaz%2Ftar diff --git a/src/tar.c b/src/tar.c index 0375c41..35121ff 100644 --- a/src/tar.c +++ b/src/tar.c @@ -41,10 +41,11 @@ #include #include +#include #include #include -#include #include +#include #include #include #include @@ -254,6 +255,7 @@ enum DELETE_OPTION, EXCLUDE_CACHES_OPTION, EXCLUDE_OPTION, + EXCLUDE_TAG_OPTION, FORCE_LOCAL_OPTION, GROUP_OPTION, HANG_OPTION, @@ -263,6 +265,7 @@ enum INDEX_FILE_OPTION, KEEP_NEWER_FILES_OPTION, MODE_OPTION, + MTIME_OPTION, NEWER_MTIME_OPTION, NO_ANCHORED_OPTION, NO_DELAY_DIRECTORY_RESTORE_OPTION, @@ -281,6 +284,7 @@ enum OCCURRENCE_OPTION, OLD_ARCHIVE_OPTION, ONE_FILE_SYSTEM_OPTION, + OVERWRITE_DIR_OPTION, OVERWRITE_OPTION, OWNER_OPTION, PAX_OPTION, @@ -299,6 +303,7 @@ enum SHOW_DEFAULTS_OPTION, SHOW_OMITTED_DIRS_OPTION, SHOW_TRANSFORMED_NAMES_OPTION, + SPARSE_VERSION_OPTION, STRIP_COMPONENTS_OPTION, SUFFIX_OPTION, TEST_LABEL_OPTION, @@ -317,13 +322,16 @@ enum 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\ @@ -380,6 +388,8 @@ static struct argp_option options[] = { {"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, @@ -398,7 +408,7 @@ static struct argp_option options[] = { #define GRID 30 {NULL, 0, NULL, 0, - N_("Overwrite control:\n"), GRID+1 }, + N_("Overwrite control:"), GRID }, {"verify", 'W', 0, 0, N_("attempt to verify the archive after writing it"), GRID+1 }, @@ -416,6 +426,9 @@ static struct argp_option options[] = { 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 @@ -440,6 +453,8 @@ static struct argp_option options[] = { N_("force NAME as owner for added files"), GRID+1 }, {"group", GROUP_OPTION, N_("NAME"), 0, 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"), GRID+1 }, {"atime-preserve", ATIME_PRESERVE_OPTION, @@ -475,7 +490,7 @@ static struct argp_option options[] = { #define GRID 60 {NULL, 0, NULL, 0, - N_("Device selection and switching:\n"), GRID+1 }, + N_("Device selection and switching:"), GRID }, {"file", 'f', N_("ARCHIVE"), 0, N_("use archive file or device ARCHIVE"), GRID+1 }, @@ -514,7 +529,7 @@ static struct argp_option options[] = { #define GRID 70 {NULL, 0, NULL, 0, - N_("Device blocking:"), GRID+1 }, + N_("Device blocking:"), GRID }, {"blocking-factor", 'b', N_("BLOCKS"), 0, N_("BLOCKS x 512 bytes per record"), GRID+1 }, @@ -590,6 +605,8 @@ static struct argp_option options[] = { N_("exclude patterns listed in FILE"), GRID+1 }, {"exclude-caches", EXCLUDE_CACHES_OPTION, 0, 0, N_("exclude directories containing a cache tag"), GRID+1 }, + {"exclude-tag", EXCLUDE_TAG_OPTION, N_("FILE"), 0, + N_("exclude directories containing FILE"), GRID+1 }, {"no-recursion", NO_RECURSION_OPTION, 0, 0, N_("avoid descending automatically in directories"), GRID+1 }, {"one-file-system", ONE_FILE_SYSTEM_OPTION, 0, 0, @@ -604,10 +621,9 @@ static struct argp_option options[] = { 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"), 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"), GRID+1 }, - {"after-date", 'N', N_("DATE"), 0, - N_("same as -N"), GRID+1 }, {"backup", BACKUP_OPTION, N_("CONTROL"), OPTION_ARG_OPTIONAL, N_("backup before removal, choose version CONTROL"), GRID+1 }, {"suffix", SUFFIX_OPTION, N_("STRING"), 0, @@ -621,10 +637,10 @@ static struct argp_option options[] = { 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 }, + N_("use sed replace EXPRESSION to transform file names"), GRID+1 }, #undef GRID -#define GRID 95 +#define GRID 95 {NULL, 0, NULL, 0, N_("File name matching options (affect both exclude and include patterns):"), GRID }, @@ -645,7 +661,7 @@ static struct argp_option options[] = { {"wildcards-match-slash", WILDCARDS_MATCH_SLASH_OPTION, 0, 0, N_("wildcards match `/' (default for exclusion)"), GRID+1 }, #undef GRID - + #define GRID 100 {NULL, 0, NULL, 0, N_("Informative output:"), GRID }, @@ -657,8 +673,11 @@ static struct argp_option options[] = { GRID+1 }, {"check-links", 'l', 0, 0, N_("print a message if not all links are dumped"), GRID+1 }, - {"totals", TOTALS_OPTION, 0, 0, - N_("print total bytes written while creating archive"), 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"), GRID+1 }, {"index-file", INDEX_FILE_OPTION, N_("FILE"), 0, @@ -736,8 +755,9 @@ enum wildcards struct tar_args /* Variables used during option parsing */ { - char const *textual_date_option; /* Keeps the argument to --newer-mtime - option if it represents a textual date */ + 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 */ @@ -761,7 +781,7 @@ struct tar_args /* Variables used during option parsing */ | (args)->matching_flags \ | recursion_option) -#ifdef REMOTE_SHELL +#ifdef REMOTE_SHELL # define DECL_SHOW_DEFAULT_SETTINGS(stream, printer) \ { \ printer (stream, \ @@ -789,7 +809,7 @@ struct tar_args /* Variables used during option parsing */ 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) @@ -814,14 +834,131 @@ 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 +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; 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_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 FILENAME_TERMINATOR and put them @@ -839,13 +976,15 @@ read_name_from_file (FILE *fp, struct obstack *stk) { /* We have read a zero separator. The file possibly is zero-separated */ - /* FATAL_ERROR((0, 0, N_("file name contains null character"))); */ 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; @@ -926,31 +1065,42 @@ update_argv (const char *filename, struct argp_state *state) open_fatal (filename); } - while ((read_state = read_name_from_file (fp, &argv_stk)) == file_list_success) - count++; - - if (read_state == file_list_zero) + while ((read_state = read_name_from_file (fp, &argv_stk)) != file_list_end) { - size_t size; + switch (read_state) + { + case file_list_success: + count++; + break; - WARN ((0, 0, N_("%s: file name read contains nul character"), - quotearg_colon (filename))); + case file_list_end: /* won't happen, just to pacify gcc */ + break; - /* 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 */ - filename_terminator = 0; - while (read_name_from_file (fp, &argv_stk) == file_list_success) - count++; + case file_list_zero: + { + size_t size; + + WARN ((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 */ + filename_terminator = 0; + break; + } + + case file_list_skip: + break; + } } if (!is_stdin) @@ -993,11 +1143,11 @@ tar_help (struct argp_state *state) 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'); @@ -1153,6 +1303,11 @@ parse_opt (int key, char *arg, struct argp_state *state) 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; @@ -1164,31 +1319,9 @@ 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 sample file not found"))); - } - newer_mtime_option = get_stat_mtime (&st); - } - else - { - if (! get_date (&newer_mtime_option, arg, NULL)) - { - WARN ((0, 0, _("Substituting %s for unknown date format %s"), - tartime (newer_mtime_option, false), 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; case 'o': @@ -1215,7 +1348,7 @@ parse_opt (int key, char *arg, struct argp_state *state) /* 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. */ @@ -1223,7 +1356,7 @@ parse_opt (int key, char *arg, struct argp_state *state) break; case 's': - /* Names to extr are sorted. */ + /* Names to extract are sorted. */ same_order_option = true; break; @@ -1232,6 +1365,22 @@ parse_opt (int key, char *arg, struct argp_state *state) 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++; @@ -1361,6 +1510,10 @@ parse_opt (int key, char *arg, struct argp_state *state) exclude_caches_option = true; break; + case EXCLUDE_TAG_OPTION: + add_exclude_tag (arg); + break; + case FORCE_LOCAL_OPTION: force_local_option = true; break; @@ -1463,6 +1616,10 @@ parse_opt (int key, char *arg, struct argp_state *state) } break; + case OVERWRITE_DIR_OPTION: + old_files_option = DEFAULT_OLD_FILES; + break; + case OVERWRITE_OPTION: old_files_option = OVERWRITE_OLD_FILES; break; @@ -1576,13 +1733,16 @@ parse_opt (int key, char *arg, struct argp_state *state) break; case TOTALS_OPTION: - totals_option = true; + if (arg) + set_stat_signal (arg); + else + totals_option = true; break; case TRANSFORM_OPTION: set_transform_expr (arg); break; - + case USE_COMPRESS_PROGRAM_OPTION: set_use_compress_program_option (arg); break; @@ -1760,7 +1920,7 @@ decode_options (int argc, char **argv) struct tar_args args; /* Set some default option values. */ - args.textual_date_option = NULL; + args.textual_date = NULL; args.wildcards = default_wildcards; args.matching_flags = 0; args.include_anchored = EXCLUDE_ANCHORED; @@ -1779,6 +1939,8 @@ decode_options (int argc, char **argv) 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; @@ -1882,7 +2044,7 @@ decode_options (int argc, char **argv) /* 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) @@ -1901,13 +2063,6 @@ decode_options (int argc, char **argv) | FORMAT_MASK (GNU_FORMAT) | FORMAT_MASK (POSIX_FORMAT)); - if (multi_volume_option - && archive_format == POSIX_FORMAT - && subcommand_option == CREATE_SUBCOMMAND - && !tape_length_option) - USAGE_ERROR ((0, 0, - _("creating multi-volume archives in posix format requires using --tape-length (-L) option"))); - if (occurrence_option) { if (!args.input_files) @@ -2061,6 +2216,16 @@ 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. */ @@ -2077,13 +2242,8 @@ decode_options (int argc, char **argv) backup_option = false; } - if (verbose_option && args.textual_date_option) - { - char const *treated_as = tartime (newer_mtime_option, true); - if (strcmp (args.textual_date_option, treated_as) != 0) - WARN ((0, 0, _("Treating date `%s' as %s"), - args.textual_date_option, treated_as)); - } + if (verbose_option) + report_textual_dates (&args); } @@ -2108,6 +2268,9 @@ main (int argc, char **argv) /* Make sure we have first three descriptors available */ stdopen (); + /* Close all inherited open descriptors, except for the first three */ + closeopen (); + /* Pre-allocate a few structures. */ allocated_archive_names = 10; @@ -2150,8 +2313,6 @@ main (int argc, char **argv) case CREATE_SUBCOMMAND: create_archive (); - if (totals_option) - print_total_written (); break; case EXTRACT_SUBCOMMAND: @@ -2174,6 +2335,9 @@ main (int argc, char **argv) break; } + if (totals_option) + print_total_stats (); + if (check_links_option) check_links (); @@ -2185,13 +2349,14 @@ main (int argc, char **argv) free (archive_name_array); name_term (); - if (stdlis == stdout) - close_stdout (); - if (exit_status == TAREXIT_FAILURE) error (0, 0, _("Error exit delayed from previous errors")); - if (ferror (stderr) || fclose (stderr) != 0) + + if (stdlis == stdout) + close_stdout (); + else if (ferror (stderr) || fclose (stderr) != 0) exit_status = TAREXIT_FAILURE; + return exit_status; }