X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Flist.c;h=ddf044df0e1f1621b8669aceacbf42df43b2c297;hb=d659cbaccdc1f3279c49107cf15f15a639738529;hp=5b06e80ecb9b7a27115fb5e5154934d25170918c;hpb=7645d20465e8c37f8f246b7490cbffbb0107045d;p=chaz%2Ftar diff --git a/src/list.c b/src/list.c index 5b06e80..ddf044d 100644 --- a/src/list.c +++ b/src/list.c @@ -1,7 +1,7 @@ /* List a tar archive, with support routines for reading a tar archive. Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, - 2001, 2003 Free Software Foundation, Inc. + 2001, 2003, 2004, 2005 Free Software Foundation, Inc. Written by John Gilmore, on 1985-08-26. @@ -17,12 +17,10 @@ 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. */ -/* Define to non-zero for forcing old ctime format instead of ISO format. */ -#undef USE_OLD_CTIME - -#include "system.h" +#include +#include #include #include "common.h" @@ -37,7 +35,7 @@ size_t recent_long_name_blocks; /* number of blocks in recent_long_name */ size_t recent_long_link_blocks; /* likewise, for long link */ static uintmax_t from_header (const char *, size_t, const char *, - uintmax_t, uintmax_t); + uintmax_t, uintmax_t, bool, bool); /* Base 64 digits; see Internet RFC 2045 Table 1. */ static char const base_64_digits[64] = @@ -68,14 +66,18 @@ read_and (void (*do_something) (void)) { enum read_header status = HEADER_STILL_UNREAD; enum read_header prev_status; + struct timespec mtime; base64_init (); name_gather (); - open_archive (ACCESS_READ); - while (1) + open_archive (ACCESS_READ); + do { prev_status = status; + tar_stat_destroy (¤t_stat_info); + xheader_destroy (&extended_header); + status = read_header (false); switch (status) { @@ -89,12 +91,16 @@ read_and (void (*do_something) (void)) Ensure incoming names are null terminated. */ if (! name_match (current_stat_info.file_name) - || (newer_mtime_option != TYPE_MINIMUM (time_t) + || (NEWER_OPTION_INITIALIZED (newer_mtime_option) /* FIXME: We get mtime now, and again later; this causes duplicate diagnostics if header.mtime is bogus. */ - && ((current_stat_info.stat.st_mtime - = TIME_FROM_HEADER (current_header->header.mtime)) - < newer_mtime_option)) + && ((mtime.tv_sec + = TIME_FROM_HEADER (current_header->header.mtime)), + /* FIXME: Grab fractional time stamps from + extended header. */ + mtime.tv_nsec = 0, + set_stat_mtime (¤t_stat_info.stat, mtime), + OLDER_STAT_TIME (current_stat_info.stat, m))) || excluded_name (current_stat_info.file_name)) { switch (current_header->header.typeflag) @@ -110,10 +116,12 @@ read_and (void (*do_something) (void)) quotearg_colon (current_stat_info.file_name))); /* Fall through. */ default: + decode_header (current_header, + ¤t_stat_info, ¤t_format, 0); skip_member (); continue; } - } + } (*do_something) (); continue; @@ -127,10 +135,20 @@ read_and (void (*do_something) (void)) } set_next_block_after (current_header); + + if (!ignore_zeros_option) + { + char buf[UINTMAX_STRSIZE_BOUND]; + + status = read_header (false); + if (status == HEADER_ZERO_BLOCK) + break; + WARN ((0, 0, _("A lone zero block at %s"), + STRINGIFY_BIGINT (current_block_ordinal (), buf))); + break; + } status = prev_status; - if (ignore_zeros_option) - continue; - break; + continue; case HEADER_END_OF_FILE: if (block_number_option) @@ -153,6 +171,15 @@ read_and (void (*do_something) (void)) case HEADER_ZERO_BLOCK: case HEADER_SUCCESS: + if (block_number_option) + { + char buf[UINTMAX_STRSIZE_BOUND]; + off_t block_ordinal = current_block_ordinal (); + block_ordinal -= recent_long_name_blocks; + block_ordinal -= recent_long_link_blocks; + fprintf (stdlis, _("block %s: "), + STRINGIFY_BIGINT (block_ordinal, buf)); + } ERROR ((0, 0, _("Skipping to next header"))); break; @@ -168,6 +195,7 @@ read_and (void (*do_something) (void)) } break; } + while (!all_names_found (¤t_stat_info)); close_archive (); names_notfound (); /* print names not found */ @@ -181,7 +209,7 @@ list_archive (void) decode_header (current_header, ¤t_stat_info, ¤t_format, 0); if (verbose_option) - print_header (-1); + print_header (¤t_stat_info, -1); if (incremental_option && current_header->header.typeflag == GNUTYPE_DUMPDIR) { @@ -192,7 +220,7 @@ list_archive (void) set_next_block_after (current_header); if (multi_volume_option) { - assign_string (&save_name, current_stat_info.file_name); + assign_string (&save_name, current_stat_info.orig_file_name); save_totsize = current_stat_info.stat.st_size; } for (size = current_stat_info.stat.st_size; size > 0; size -= written) @@ -228,7 +256,7 @@ list_archive (void) } if (multi_volume_option) - assign_string (&save_name, current_stat_info.file_name); + assign_string (&save_name, current_stat_info.orig_file_name); skip_member (); @@ -236,6 +264,61 @@ list_archive (void) assign_string (&save_name, 0); } +/* Check header checksum */ +/* The standard BSD tar sources create the checksum by adding up the + bytes in the header as type char. I think the type char was unsigned + on the PDP-11, but it's signed on the Next and Sun. It looks like the + sources to BSD tar were never changed to compute the checksum + correctly, so both the Sun and Next add the bytes of the header as + signed chars. This doesn't cause a problem until you get a file with + a name containing characters with the high bit set. So tar_checksum + computes two checksums -- signed and unsigned. */ + +enum read_header +tar_checksum (union block *header, bool silent) +{ + size_t i; + int unsigned_sum = 0; /* the POSIX one :-) */ + int signed_sum = 0; /* the Sun one :-( */ + int recorded_sum; + uintmax_t parsed_sum; + char *p; + + p = header->buffer; + for (i = sizeof *header; i-- != 0;) + { + unsigned_sum += (unsigned char) *p; + signed_sum += (signed char) (*p++); + } + + if (unsigned_sum == 0) + return HEADER_ZERO_BLOCK; + + /* Adjust checksum to count the "chksum" field as blanks. */ + + for (i = sizeof header->header.chksum; i-- != 0;) + { + unsigned_sum -= (unsigned char) header->header.chksum[i]; + signed_sum -= (signed char) (header->header.chksum[i]); + } + unsigned_sum += ' ' * sizeof header->header.chksum; + signed_sum += ' ' * sizeof header->header.chksum; + + parsed_sum = from_header (header->header.chksum, + sizeof header->header.chksum, 0, + (uintmax_t) 0, + (uintmax_t) TYPE_MAXIMUM (int), true, silent); + if (parsed_sum == (uintmax_t) -1) + return HEADER_FAILURE; + + recorded_sum = parsed_sum; + + if (unsigned_sum != recorded_sum && signed_sum != recorded_sum) + return HEADER_FAILURE; + + return HEADER_SUCCESS; +} + /* Read a block that's supposed to be a header block. Return its address in "current_header", and if it is good, the file's size in current_stat_info.stat.st_size. @@ -249,24 +332,9 @@ list_archive (void) You must always set_next_block_after(current_header) to skip past the header which this routine reads. */ -/* The standard BSD tar sources create the checksum by adding up the - bytes in the header as type char. I think the type char was unsigned - on the PDP-11, but it's signed on the Next and Sun. It looks like the - sources to BSD tar were never changed to compute the checksum - correctly, so both the Sun and Next add the bytes of the header as - signed chars. This doesn't cause a problem until you get a file with - a name containing characters with the high bit set. So read_header - computes two checksums -- signed and unsigned. */ - enum read_header read_header (bool raw_extended_headers) { - size_t i; - int unsigned_sum; /* the POSIX one :-) */ - int signed_sum; /* the Sun one :-( */ - int recorded_sum; - uintmax_t parsed_sum; - char *p; union block *header; union block *header_copy; char *bp; @@ -279,44 +347,15 @@ read_header (bool raw_extended_headers) while (1) { + enum read_header status; + header = find_next_block (); current_header = header; if (!header) return HEADER_END_OF_FILE; - unsigned_sum = 0; - signed_sum = 0; - p = header->buffer; - for (i = sizeof *header; i-- != 0;) - { - unsigned_sum += (unsigned char) *p; - signed_sum += (signed char) (*p++); - } - - if (unsigned_sum == 0) - return HEADER_ZERO_BLOCK; - - /* Adjust checksum to count the "chksum" field as blanks. */ - - for (i = sizeof header->header.chksum; i-- != 0;) - { - unsigned_sum -= (unsigned char) header->header.chksum[i]; - signed_sum -= (signed char) (header->header.chksum[i]); - } - unsigned_sum += ' ' * sizeof header->header.chksum; - signed_sum += ' ' * sizeof header->header.chksum; - - parsed_sum = from_header (header->header.chksum, - sizeof header->header.chksum, 0, - (uintmax_t) 0, - (uintmax_t) TYPE_MAXIMUM (int)); - if (parsed_sum == (uintmax_t) -1) - return HEADER_FAILURE; - - recorded_sum = parsed_sum; - - if (unsigned_sum != recorded_sum && signed_sum != recorded_sum) - return HEADER_FAILURE; + if ((status = tar_checksum (header, false)) != HEADER_SUCCESS) + return status; /* Good block. Decode file size and return. */ @@ -328,7 +367,8 @@ read_header (bool raw_extended_headers) if (header->header.typeflag == GNUTYPE_LONGNAME || header->header.typeflag == GNUTYPE_LONGLINK || header->header.typeflag == XHDTYPE - || header->header.typeflag == XGLTYPE) + || header->header.typeflag == XGLTYPE + || header->header.typeflag == SOLARIS_XHDTYPE) { if (raw_extended_headers) return HEADER_SUCCESS_EXTENDED; @@ -336,13 +376,17 @@ read_header (bool raw_extended_headers) || header->header.typeflag == GNUTYPE_LONGLINK) { size_t name_size = current_stat_info.stat.st_size; - size = name_size - name_size % BLOCKSIZE + 2 * BLOCKSIZE; + size_t n = name_size % BLOCKSIZE; + size = name_size + BLOCKSIZE; + if (n) + size += BLOCKSIZE - n; + if (name_size != current_stat_info.stat.st_size || size < name_size) xalloc_die (); header_copy = xmalloc (size + 1); - + if (header->header.typeflag == GNUTYPE_LONGNAME) { if (next_long_name) @@ -357,7 +401,7 @@ read_header (bool raw_extended_headers) next_long_link = header_copy; next_long_link_blocks = size / BLOCKSIZE; } - + set_next_block_after (header); *header_copy = *header; bp = header_copy->buffer + BLOCKSIZE; @@ -373,7 +417,7 @@ read_header (bool raw_extended_headers) written = available_space_after (data_block); if (written > size) written = size; - + memcpy (bp, data_block->buffer, written); bp += written; set_next_block_after ((union block *) @@ -383,9 +427,14 @@ read_header (bool raw_extended_headers) *bp = '\0'; } else if (header->header.typeflag == XHDTYPE - || header->header.typeflag == XGLTYPE) + || header->header.typeflag == SOLARIS_XHDTYPE) xheader_read (header, OFF_FROM_HEADER (header->header.size)); - + else if (header->header.typeflag == XGLTYPE) + { + xheader_read (header, OFF_FROM_HEADER (header->header.size)); + xheader_decode_global (); + } + /* Loop! */ } @@ -416,11 +465,6 @@ read_header (bool raw_extended_headers) np[sizeof h->prefix] = '\0'; np += strlen (np); *np++ = '/'; - - /* Prevent later references to current_header from - mistakenly treating this as an old GNU header. - This assignment invalidates h->prefix. */ - current_header->oldgnu_header.isextended = 0; } memcpy (np, h->name, sizeof h->name); np[sizeof h->name] = '\0'; @@ -476,6 +520,9 @@ decode_header (union block *header, struct tar_stat_info *stat_info, enum archive_format *format_pointer, int do_user_group) { enum archive_format format; + struct timespec atime; + struct timespec ctime; + struct timespec mtime; if (strcmp (header->header.magic, TMAGIC) == 0) { @@ -485,8 +532,10 @@ decode_header (union block *header, struct tar_stat_info *stat_info, && ISOCTAL (header->star_header.ctime[0]) && header->star_header.ctime[11] == ' ') format = STAR_FORMAT; - else + else if (extended_header.size) format = POSIX_FORMAT; + else + format = USTAR_FORMAT; } else if (strcmp (header->header.magic, OLDGNU_MAGIC) == 0) format = OLDGNU_FORMAT; @@ -495,17 +544,31 @@ decode_header (union block *header, struct tar_stat_info *stat_info, *format_pointer = format; stat_info->stat.st_mode = MODE_FROM_HEADER (header->header.mode); - stat_info->stat.st_mtime = TIME_FROM_HEADER (header->header.mtime); - assign_string (&stat_info->uname, header->header.uname); - assign_string (&stat_info->gname, header->header.gname); - stat_info->devmajor = MAJOR_FROM_HEADER (header->header.devmajor); - stat_info->devminor = MINOR_FROM_HEADER (header->header.devminor); - + mtime.tv_sec = TIME_FROM_HEADER (header->header.mtime); + mtime.tv_nsec = 0; + set_stat_mtime (&stat_info->stat, mtime); + assign_string (&stat_info->uname, + header->header.uname[0] ? header->header.uname : NULL); + assign_string (&stat_info->gname, + header->header.gname[0] ? header->header.gname : NULL); + if (format == OLDGNU_FORMAT && incremental_option) { - stat_info->stat.st_atime = TIME_FROM_HEADER (header->oldgnu_header.atime); - stat_info->stat.st_ctime = TIME_FROM_HEADER (header->oldgnu_header.ctime); + atime.tv_sec = TIME_FROM_HEADER (header->oldgnu_header.atime); + ctime.tv_sec = TIME_FROM_HEADER (header->oldgnu_header.ctime); + atime.tv_nsec = ctime.tv_nsec = 0; + } + else if (format == STAR_FORMAT) + { + atime.tv_sec = TIME_FROM_HEADER (header->star_header.atime); + ctime.tv_sec = TIME_FROM_HEADER (header->star_header.ctime); + atime.tv_nsec = ctime.tv_nsec = 0; } + else + atime = ctime = start_time; + + set_stat_atime (&stat_info->stat, atime); + set_stat_ctime (&stat_info->stat, ctime); if (format == V7_FORMAT) { @@ -515,13 +578,6 @@ decode_header (union block *header, struct tar_stat_info *stat_info, } else { - - if (format == STAR_FORMAT) - { - stat_info->stat.st_atime = TIME_FROM_HEADER (header->star_header.atime); - stat_info->stat.st_ctime = TIME_FROM_HEADER (header->star_header.ctime); - } - if (do_user_group) { /* FIXME: Decide if this should somewhat depend on -p. */ @@ -536,12 +592,14 @@ decode_header (union block *header, struct tar_stat_info *stat_info, || !gname_to_gid (header->header.gname, &stat_info->stat.st_gid)) stat_info->stat.st_gid = GID_FROM_HEADER (header->header.gid); } - + switch (header->header.typeflag) { case BLKTYPE: case CHRTYPE: - stat_info->stat.st_rdev = makedev (stat_info->devmajor, stat_info->devminor); + stat_info->stat.st_rdev = + makedev (MAJOR_FROM_HEADER (header->header.devmajor), + MINOR_FROM_HEADER (header->header.devminor)); break; default: @@ -549,18 +607,28 @@ decode_header (union block *header, struct tar_stat_info *stat_info, } } - if (extended_header.size) - xheader_decode (stat_info); + stat_info->archive_file_size = stat_info->stat.st_size; + xheader_decode (stat_info); + + if (sparse_member_p (stat_info)) + { + sparse_fixup_header (stat_info); + stat_info->is_sparse = true; + } + else + stat_info->is_sparse = false; } /* Convert buffer at WHERE0 of size DIGS from external format to - uintmax_t. The data is of type TYPE. The buffer must represent a - value in the range -MINUS_MINVAL through MAXVAL. DIGS must be - positive. Return -1 on error, diagnosing the error if TYPE is - nonzero. */ + uintmax_t. DIGS must be positive. If TYPE is nonnull, the data + are of type TYPE. The buffer must represent a value in the range + -MINUS_MINVAL through MAXVAL. If OCTAL_ONLY, allow only octal + numbers instead of the other GNU extensions. Return -1 on error, + diagnosing the error if TYPE is nonnull and if !SILENT. */ static uintmax_t from_header (char const *where0, size_t digs, char const *type, - uintmax_t minus_minval, uintmax_t maxval) + uintmax_t minus_minval, uintmax_t maxval, + bool octal_only, bool silent) { uintmax_t value; char const *where = where0; @@ -576,8 +644,9 @@ from_header (char const *where0, size_t digs, char const *type, { if (where == lim) { - if (type) + if (type && !silent) ERROR ((0, 0, + /* TRANSLATORS: %s is type of the value (gid_t, uid_t, etc.) */ _("Blanks in header where numeric %s value expected"), type)); return -1; @@ -630,34 +699,43 @@ from_header (char const *where0, size_t digs, char const *type, if (!overflow && value <= minus_minval) { - WARN ((0, 0, - _("Archive octal value %.*s is out of %s range; assuming two's complement"), - (int) (where - where1), where1, type)); + if (!silent) + WARN ((0, 0, + /* TRANSLATORS: Second %s is a type name (gid_t,uid_t,etc.) */ + _("Archive octal value %.*s is out of %s range; assuming two's complement"), + (int) (where - where1), where1, type)); negative = 1; } } if (overflow) { - if (type) + if (type && !silent) ERROR ((0, 0, + /* TRANSLATORS: Second %s is a type name (gid_t,uid_t,etc.) */ _("Archive octal value %.*s is out of %s range"), (int) (where - where1), where1, type)); return -1; } } + else if (octal_only) + { + /* Suppress the following extensions. */ + } else if (*where == '-' || *where == '+') { /* Parse base-64 output produced only by tar test versions 1.13.6 (1999-08-11) through 1.13.11 (1999-08-23). Support for this will be withdrawn in future releases. */ int dig; - static int warned_once; - if (! warned_once) + if (!silent) { - warned_once = 1; - WARN ((0, 0, - _("Archive contains obsolescent base-64 headers"))); + static bool warned_once; + if (! warned_once) + { + warned_once = true; + WARN ((0, 0, _("Archive contains obsolescent base-64 headers"))); + } } negative = *where++ == '-'; while (where != lim @@ -668,7 +746,7 @@ from_header (char const *where0, size_t digs, char const *type, char *string = alloca (digs + 1); memcpy (string, where0, digs); string[digs] = '\0'; - if (type) + if (type && !silent) ERROR ((0, 0, _("Archive signed base-64 string %s is out of %s range"), quote (string), type)); @@ -699,7 +777,7 @@ from_header (char const *where0, size_t digs, char const *type, break; if (((value << LG_256 >> LG_256) | topbits) != value) { - if (type) + if (type && !silent) ERROR ((0, 0, _("Archive base-256 value is out of %s range"), type)); @@ -727,9 +805,11 @@ from_header (char const *where0, size_t digs, char const *type, while (where0 != lim && ! lim[-1]) lim--; quotearg_buffer (buf, sizeof buf, where0, lim - where, o); - ERROR ((0, 0, - _("Archive contains %.*s where numeric %s value expected"), - (int) sizeof buf, buf, type)); + if (!silent) + ERROR ((0, 0, + /* TRANSLATORS: Second %s is a type name (gid_t,uid_t,etc.) */ + _("Archive contains %.*s where numeric %s value expected"), + (int) sizeof buf, buf, type)); } return -1; @@ -738,7 +818,7 @@ from_header (char const *where0, size_t digs, char const *type, if (value <= (negative ? minus_minval : maxval)) return negative ? -value : value; - if (type) + if (type && !silent) { char minval_buf[UINTMAX_STRSIZE_BOUND + 1]; char maxval_buf[UINTMAX_STRSIZE_BOUND]; @@ -749,7 +829,8 @@ from_header (char const *where0, size_t digs, char const *type, *--value_string = '-'; if (minus_minval) *--minval_string = '-'; - ERROR ((0, 0, _("Archive value %s is out of %s range %s.%s"), + /* TRANSLATORS: Second %s is type name (gid_t,uid_t,etc.) */ + ERROR ((0, 0, _("Archive value %s is out of %s range %s..%s"), value_string, type, minval_string, STRINGIFY_BIGINT (maxval, maxval_buf))); } @@ -762,7 +843,8 @@ gid_from_header (const char *p, size_t s) { return from_header (p, s, "gid_t", - (uintmax_t) TYPE_MINIMUM (gid_t), - (uintmax_t) TYPE_MAXIMUM (gid_t)); + (uintmax_t) TYPE_MAXIMUM (gid_t), + false, false); } major_t @@ -770,7 +852,7 @@ major_from_header (const char *p, size_t s) { return from_header (p, s, "major_t", - (uintmax_t) TYPE_MINIMUM (major_t), - (uintmax_t) TYPE_MAXIMUM (major_t)); + (uintmax_t) TYPE_MAXIMUM (major_t), false, false); } minor_t @@ -778,7 +860,7 @@ minor_from_header (const char *p, size_t s) { return from_header (p, s, "minor_t", - (uintmax_t) TYPE_MINIMUM (minor_t), - (uintmax_t) TYPE_MAXIMUM (minor_t)); + (uintmax_t) TYPE_MAXIMUM (minor_t), false, false); } mode_t @@ -787,7 +869,7 @@ mode_from_header (const char *p, size_t s) /* Do not complain about unrecognized mode bits. */ unsigned u = from_header (p, s, "mode_t", - (uintmax_t) TYPE_MINIMUM (mode_t), - TYPE_MAXIMUM (uintmax_t)); + TYPE_MAXIMUM (uintmax_t), false, false); return ((u & TSUID ? S_ISUID : 0) | (u & TSGID ? S_ISGID : 0) | (u & TSVTX ? S_ISVTX : 0) @@ -808,14 +890,14 @@ off_from_header (const char *p, size_t s) /* Negative offsets are not allowed in tar files, so invoke from_header with minimum value 0, not TYPE_MINIMUM (off_t). */ return from_header (p, s, "off_t", (uintmax_t) 0, - (uintmax_t) TYPE_MAXIMUM (off_t)); + (uintmax_t) TYPE_MAXIMUM (off_t), false, false); } size_t size_from_header (const char *p, size_t s) { return from_header (p, s, "size_t", (uintmax_t) 0, - (uintmax_t) TYPE_MAXIMUM (size_t)); + (uintmax_t) TYPE_MAXIMUM (size_t), false, false); } time_t @@ -823,7 +905,7 @@ time_from_header (const char *p, size_t s) { return from_header (p, s, "time_t", - (uintmax_t) TYPE_MINIMUM (time_t), - (uintmax_t) TYPE_MAXIMUM (time_t)); + (uintmax_t) TYPE_MAXIMUM (time_t), false, false); } uid_t @@ -831,72 +913,72 @@ uid_from_header (const char *p, size_t s) { return from_header (p, s, "uid_t", - (uintmax_t) TYPE_MINIMUM (uid_t), - (uintmax_t) TYPE_MAXIMUM (uid_t)); + (uintmax_t) TYPE_MAXIMUM (uid_t), false, false); } uintmax_t uintmax_from_header (const char *p, size_t s) { return from_header (p, s, "uintmax_t", (uintmax_t) 0, - TYPE_MAXIMUM (uintmax_t)); + TYPE_MAXIMUM (uintmax_t), false, false); } -/* Format O as a null-terminated decimal string into BUF _backwards_; - return pointer to start of result. */ -char * -stringify_uintmax_t_backwards (uintmax_t o, char *buf) -{ - *--buf = '\0'; - do - *--buf = '0' + (int) (o % 10); - while ((o /= 10) != 0); - return buf; -} - /* Return a printable representation of T. The result points to static storage that can be reused in the next call to this - function, to ctime, or to asctime. */ + function, to ctime, or to asctime. If FULL_TIME, then output the + time stamp to its full resolution; otherwise, just output it to + 1-minute resolution. */ char const * -tartime (time_t t) +tartime (struct timespec t, bool full_time) { + enum { fraclen = sizeof ".FFFFFFFFF" - 1 }; static char buffer[max (UINTMAX_STRSIZE_BOUND + 1, - INT_STRLEN_BOUND (int) + 16)]; + INT_STRLEN_BOUND (int) + 16) + + fraclen]; + struct tm *tm; + time_t s = t.tv_sec; + int ns = t.tv_nsec; + bool negative = s < 0; char *p; -#if USE_OLD_CTIME - p = ctime (&t); - if (p) + if (negative && ns != 0) { - char const *time_stamp = p + 4; - for (p += 16; p[3] != '\n'; p++) - p[0] = p[3]; - p[0] = '\0'; - return time_stamp; + s++; + ns = 1000000000 - ns; } -#else - /* Use ISO 8610 format. See: - http://www.cl.cam.ac.uk/~mgk25/iso-time.html */ - struct tm *tm = localtime (&t); + + tm = utc_option ? gmtime (&s) : localtime (&s); if (tm) { - sprintf (buffer, "%04ld-%02d-%02d %02d:%02d:%02d", - tm->tm_year + 1900L, tm->tm_mon + 1, tm->tm_mday, - tm->tm_hour, tm->tm_min, tm->tm_sec); + if (full_time) + { + sprintf (buffer, "%04ld-%02d-%02d %02d:%02d:%02d", + tm->tm_year + 1900L, tm->tm_mon + 1, tm->tm_mday, + tm->tm_hour, tm->tm_min, tm->tm_sec); + code_ns_fraction (ns, buffer + strlen (buffer)); + } + else + sprintf (buffer, "%04ld-%02d-%02d %02d:%02d", + tm->tm_year + 1900L, tm->tm_mon + 1, tm->tm_mday, + tm->tm_hour, tm->tm_min); return buffer; } -#endif /* The time stamp cannot be broken down, most likely because it is out of range. Convert it as an integer, right-adjusted in a field with the same width as the usual - 19-byte 4-year ISO time format. */ - p = stringify_uintmax_t_backwards (t < 0 ? - (uintmax_t) t : (uintmax_t) t, - buffer + sizeof buffer); - if (t < 0) + 4-year ISO time format. */ + p = umaxtostr (negative ? - (uintmax_t) s : s, + buffer + sizeof buffer - UINTMAX_STRSIZE_BOUND - fraclen); + if (negative) *--p = '-'; - while (buffer + sizeof buffer - 19 - 1 < p) + while ((buffer + sizeof buffer - sizeof "YYYY-MM-DD HH:MM" + + (full_time ? sizeof ":SS.FFFFFFFFF" - 1 : 0)) + < p) *--p = ' '; + if (full_time) + code_ns_fraction (ns, buffer + sizeof buffer - 1 - fraclen); return p; } @@ -913,25 +995,26 @@ tartime (time_t t) /* FIXME: Note that print_header uses the globals HEAD, HSTAT, and HEAD_STANDARD, which must be set up in advance. Not very clean.. */ -/* UGSWIDTH starts with 18, so with user and group names <= 8 chars, the - columns never shift during the listing. */ -#define UGSWIDTH 18 -static int ugswidth = UGSWIDTH; /* maximum width encountered so far */ +/* Width of "user/group size", with initial value chosen + heuristically. This grows as needed, though this may cause some + stairstepping in the output. Make it too small and the output will + almost always look ragged. Make it too large and the output will + be spaced out too far. */ +static int ugswidth = 19; -/* DATEWIDTH is the number of columns taken by the date and time fields. */ -#if USE_OLD_CDATE -# define DATEWIDTH 19 -#else -# define DATEWIDTH 18 -#endif +/* Width of printed time stamps. It grows if longer time stamps are + found (typically, those with nanosecond resolution). Like + USGWIDTH, some stairstepping may occur. */ +static int datewidth = sizeof "YYYY-MM-DD HH:MM" - 1; void -print_header (off_t block_ordinal) +print_header (struct tar_stat_info *st, off_t block_ordinal) { char modes[11]; char const *time_stamp; - char *temp_name = current_stat_info.orig_file_name ? current_stat_info.orig_file_name : current_stat_info.file_name; - + int time_stamp_len; + char *temp_name = st->orig_file_name ? st->orig_file_name : st->file_name; + /* These hold formatted ints. */ char uform[UINTMAX_STRSIZE_BOUND], gform[UINTMAX_STRSIZE_BOUND]; char *user, *group; @@ -939,6 +1022,7 @@ print_header (off_t block_ordinal) /* holds formatted size or major,minor */ char uintbuf[UINTMAX_STRSIZE_BOUND]; int pad; + int sizelen; if (block_number_option) { @@ -978,7 +1062,7 @@ print_header (off_t block_ordinal) case GNUTYPE_LONGNAME: case GNUTYPE_LONGLINK: modes[0] = 'L'; - ERROR ((0, 0, _("Visible longname error"))); + ERROR ((0, 0, _("Unexpected long name header"))); break; case GNUTYPE_SPARSE: @@ -1014,17 +1098,22 @@ print_header (off_t block_ordinal) break; } - decode_mode (current_stat_info.stat.st_mode, modes + 1); + pax_decode_mode (st->stat.st_mode, modes + 1); /* Time stamp. */ - time_stamp = tartime (current_stat_info.stat.st_mtime); + time_stamp = tartime (get_stat_mtime (&st->stat), false); + time_stamp_len = strlen (time_stamp); + if (datewidth < time_stamp_len) + datewidth = time_stamp_len; /* User and group names. */ - if (current_stat_info.uname && current_format != V7_FORMAT + if (st->uname + && st->uname[0] + && current_format != V7_FORMAT && !numeric_owner_option) - user = current_stat_info.uname; + user = st->uname; else { /* Try parsing it as an unsigned integer first, and as a @@ -1033,7 +1122,8 @@ print_header (off_t block_ordinal) uintmax_t u = from_header (current_header->header.uid, sizeof current_header->header.uid, 0, (uintmax_t) 0, - (uintmax_t) TYPE_MAXIMUM (uintmax_t)); + (uintmax_t) TYPE_MAXIMUM (uintmax_t), + false, false); if (u != -1) user = STRINGIFY_BIGINT (u, uform); else @@ -1044,9 +1134,11 @@ print_header (off_t block_ordinal) } } - if (current_stat_info.gname && current_format != V7_FORMAT + if (st->gname + && st->gname[0] + && current_format != V7_FORMAT && !numeric_owner_option) - group = current_stat_info.gname; + group = st->gname; else { /* Try parsing it as an unsigned integer first, and as a @@ -1055,7 +1147,8 @@ print_header (off_t block_ordinal) uintmax_t g = from_header (current_header->header.gid, sizeof current_header->header.gid, 0, (uintmax_t) 0, - (uintmax_t) TYPE_MAXIMUM (uintmax_t)); + (uintmax_t) TYPE_MAXIMUM (uintmax_t), + false, false); if (g != -1) group = STRINGIFY_BIGINT (g, gform); else @@ -1073,42 +1166,39 @@ print_header (off_t block_ordinal) case CHRTYPE: case BLKTYPE: strcpy (size, - STRINGIFY_BIGINT (major (current_stat_info.stat.st_rdev), uintbuf)); + STRINGIFY_BIGINT (major (st->stat.st_rdev), uintbuf)); strcat (size, ","); strcat (size, - STRINGIFY_BIGINT (minor (current_stat_info.stat.st_rdev), uintbuf)); - break; - case GNUTYPE_SPARSE: - strcpy (size, - STRINGIFY_BIGINT - (UINTMAX_FROM_HEADER (current_header - ->oldgnu_header.realsize), - uintbuf)); + STRINGIFY_BIGINT (minor (st->stat.st_rdev), uintbuf)); break; + default: - strcpy (size, STRINGIFY_BIGINT (current_stat_info.stat.st_size, uintbuf)); + /* st->stat.st_size keeps stored file size */ + strcpy (size, STRINGIFY_BIGINT (st->stat.st_size, uintbuf)); break; } /* Figure out padding and print the whole line. */ - pad = strlen (user) + strlen (group) + strlen (size) + 1; + sizelen = strlen (size); + pad = strlen (user) + 1 + strlen (group) + 1 + sizelen; if (pad > ugswidth) ugswidth = pad; - fprintf (stdlis, "%s %s/%s %*s%s %s", - modes, user, group, ugswidth - pad, "", size, time_stamp); + fprintf (stdlis, "%s %s/%s %*s %-*s", + modes, user, group, ugswidth - pad + sizelen, size, + datewidth, time_stamp); fprintf (stdlis, " %s", quotearg (temp_name)); switch (current_header->header.typeflag) { case SYMTYPE: - fprintf (stdlis, " -> %s\n", quotearg (current_stat_info.link_name)); + fprintf (stdlis, " -> %s\n", quotearg (st->link_name)); break; case LNKTYPE: - fprintf (stdlis, _(" link to %s\n"), quotearg (current_stat_info.link_name)); + fprintf (stdlis, _(" link to %s\n"), quotearg (st->link_name)); break; default: @@ -1163,7 +1253,7 @@ print_header (off_t block_ordinal) /* Print a similar line when we make a directory automatically. */ void -print_for_mkdir (char *pathname, int length, mode_t mode) +print_for_mkdir (char *dirname, int length, mode_t mode) { char modes[11]; @@ -1172,7 +1262,7 @@ print_for_mkdir (char *pathname, int length, mode_t mode) /* File type and modes. */ modes[0] = 'd'; - decode_mode (mode, modes + 1); + pax_decode_mode (mode, modes + 1); if (block_number_option) { @@ -1181,8 +1271,8 @@ print_for_mkdir (char *pathname, int length, mode_t mode) STRINGIFY_BIGINT (current_block_ordinal (), buf)); } - fprintf (stdlis, "%s %*s %.*s\n", modes, ugswidth + DATEWIDTH, - _("Creating directory:"), length, quotearg (pathname)); + fprintf (stdlis, "%s %*s %.*s\n", modes, ugswidth + 1 + datewidth, + _("Creating directory:"), length, quotearg (dirname)); } } @@ -1198,6 +1288,19 @@ skip_file (off_t size) save_sizeleft = size; } + if (seekable_archive) + { + off_t nblk = seek_archive (size); + if (nblk >= 0) + { + size -= nblk * BLOCKSIZE; + if (multi_volume_option) /* Argh.. */ + save_sizeleft -= nblk * BLOCKSIZE; + } + else + seekable_archive = false; + } + while (size > 0) { x = find_next_block (); @@ -1211,27 +1314,18 @@ skip_file (off_t size) } } -/* Skip the current member in the archive. */ +/* Skip the current member in the archive. + NOTE: Current header must be decoded before calling this function. */ void skip_member (void) { char save_typeflag = current_header->header.typeflag; set_next_block_after (current_header); - if (current_format == OLDGNU_FORMAT - && current_header->oldgnu_header.isextended) - { - union block *exhdr; - do - { - exhdr = find_next_block (); - if (!exhdr) - FATAL_ERROR ((0, 0, _("Unexpected EOF in archive"))); - set_next_block_after (exhdr); - } - while (exhdr->sparse_header.isextended); - } + assign_string (&save_name, current_stat_info.orig_file_name); - if (save_typeflag != DIRTYPE) + if (current_stat_info.is_sparse) + sparse_skip_file (¤t_stat_info); + else if (save_typeflag != DIRTYPE) skip_file (current_stat_info.stat.st_size); }