/* List a tar archive, with support routines for reading a tar archive.
- Copyright 1988, 92,93,94,96,97,98,99, 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2003, 2004 Free Software Foundation, Inc.
+
Written by John Gilmore, on 1985-08-26.
This program is free software; you can redistribute it and/or modify it
#include "system.h"
#include <quotearg.h>
-#include <time.h>
-#ifndef time
-time_t time ();
-#endif
-
#include "common.h"
#define max(a, b) ((a) < (b) ? (b) : (a))
union block *current_header; /* points to current archive header */
-struct stat current_stat; /* stat struct corresponding */
enum archive_format current_format; /* recognized format */
+union block *recent_long_name; /* recent long name header and contents */
+union block *recent_long_link; /* likewise, for long link */
+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 PARAMS ((const char *, size_t, const char *,
- uintmax_t, uintmax_t));
+static uintmax_t from_header (const char *, size_t, const char *,
+ uintmax_t, uintmax_t);
/* Base 64 digits; see Internet RFC 2045 Table 1. */
static char const base_64_digits[64] =
base64_map[(int) base_64_digits[i]] = i;
}
-/*-----------------------------------.
-| Main loop for reading an archive. |
-`-----------------------------------*/
-
+/* Main loop for reading an archive. */
void
-read_and (void (*do_something) ())
+read_and (void (*do_something) (void))
{
enum read_header status = HEADER_STILL_UNREAD;
enum read_header prev_status;
name_gather ();
open_archive (ACCESS_READ);
- while (1)
+ do
{
prev_status = status;
- status = read_header ();
+ tar_stat_destroy (¤t_stat_info);
+ xheader_destroy (&extended_header);
+
+ status = read_header (false);
switch (status)
{
case HEADER_STILL_UNREAD:
+ case HEADER_SUCCESS_EXTENDED:
abort ();
case HEADER_SUCCESS:
/* Valid header. We should decode next field (mode) first.
Ensure incoming names are null terminated. */
- if (! name_match (current_file_name)
- || (newer_mtime_option != TYPE_MINIMUM (time_t)
+ if (! name_match (current_stat_info.file_name)
+ || (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.st_mtime
- = TIME_FROM_HEADER (current_header->header.mtime))
- < newer_mtime_option))
- || excluded_name (current_file_name))
+ && ((current_stat_info.stat.st_mtime
+ = TIME_FROM_HEADER (current_header->header.mtime)),
+#ifdef ST_MTIM_NSEC
+ /* FIXME: Grab fractional time stamps from
+ extended header. */
+ current_stat_info.stat.st_mtim.ST_MTIM_NSEC = 0,
+#endif
+ OLDER_STAT_TIME (current_stat_info.stat, m)))
+ || excluded_name (current_stat_info.file_name))
{
- char save_typeflag = current_header->header.typeflag;
- switch (save_typeflag)
+ switch (current_header->header.typeflag)
{
case GNUTYPE_VOLHDR:
case GNUTYPE_MULTIVOL:
case GNUTYPE_NAMES:
break;
-
+
case DIRTYPE:
if (show_omitted_dirs_option)
WARN ((0, 0, _("%s: Omitting"),
- quotearg_colon (current_file_name)));
+ quotearg_colon (current_stat_info.file_name)));
/* Fall through. */
default:
-
- /* Skip past it in the archive. */
-
- set_next_block_after (current_header);
- if (current_header->oldgnu_header.isextended)
- skip_extended_headers ();
-
- /* Skip to the next header on the archive. */
-
- if (save_typeflag != DIRTYPE)
- skip_file (current_stat.st_size);
+ skip_member ();
continue;
}
- }
+ }
- apply_nonancestor_delayed_set_stat (current_file_name);
(*do_something) ();
continue;
}
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)
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;
case HEADER_FAILURE:
/* We are in the middle of a cascade of errors. */
break;
+
+ case HEADER_SUCCESS_EXTENDED:
+ abort ();
}
continue;
}
break;
}
+ while (!all_names_found (¤t_stat_info));
- apply_delayed_set_stat ();
close_archive ();
names_notfound (); /* print names not found */
}
-/*---------------------------------------------.
-| Print a header block, based on tar options. |
-`---------------------------------------------*/
-
+/* Print a header block, based on tar options. */
void
list_archive (void)
{
/* Print the header block. */
+ decode_header (current_header, ¤t_stat_info, ¤t_format, 0);
if (verbose_option)
- {
- if (verbose_option > 1)
- decode_header (current_header, ¤t_stat, ¤t_format, 0);
- print_header ();
- }
+ print_header (¤t_stat_info, -1);
if (incremental_option && current_header->header.typeflag == GNUTYPE_DUMPDIR)
{
set_next_block_after (current_header);
if (multi_volume_option)
{
- assign_string (&save_name, current_file_name);
- save_totsize = current_stat.st_size;
+ assign_string (&save_name, current_stat_info.file_name);
+ save_totsize = current_stat_info.stat.st_size;
}
- for (size = current_stat.st_size; size > 0; size -= written)
+ for (size = current_stat_info.stat.st_size; size > 0; size -= written)
{
if (multi_volume_option)
save_sizeleft = size;
(data_block->buffer + written - 1));
if (check != written)
{
- write_error_details (current_file_name, check, written);
+ write_error_details (current_stat_info.file_name, check, written);
skip_file (size - written);
break;
}
}
- /* Skip past the header in the archive, and past any extended headers. */
-
- set_next_block_after (current_header);
- if (current_header->oldgnu_header.isextended)
- skip_extended_headers ();
-
if (multi_volume_option)
- assign_string (&save_name, current_file_name);
+ assign_string (&save_name, current_stat_info.file_name);
- /* Skip to the next header on the archive. */
-
- skip_file (current_stat.st_size);
+ skip_member ();
if (multi_volume_option)
assign_string (&save_name, 0);
}
-/*-----------------------------------------------------------------------.
-| 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.st_size. |
-| |
-| Return 1 for success, 0 if the checksum is bad, EOF on eof, 2 for a |
-| block full of zeros (EOF marker). |
-| |
-| You must always set_next_block_after(current_header) to skip past the |
-| header which this routine reads. |
-`-----------------------------------------------------------------------*/
+/* 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.
+
+ Return 1 for success, 0 if the checksum is bad, EOF on eof, 2 for a
+ block full of zeros (EOF marker).
+
+ If RAW_EXTENDED_HEADERS is nonzero, do not automagically fold the
+ GNU long name and link headers into later headers.
+
+ 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
computes two checksums -- signed and unsigned. */
enum read_header
-read_header (void)
+read_header (bool raw_extended_headers)
{
size_t i;
int unsigned_sum; /* the POSIX one :-) */
uintmax_t parsed_sum;
char *p;
union block *header;
- char **longp;
+ union block *header_copy;
char *bp;
union block *data_block;
size_t size, written;
- static char *next_long_name, *next_long_link;
+ union block *next_long_name = 0;
+ union block *next_long_link = 0;
+ size_t next_long_name_blocks;
+ size_t next_long_link_blocks;
while (1)
{
for (i = sizeof *header; i-- != 0;)
{
unsigned_sum += (unsigned char) *p;
- signed_sum += signed_char (*p++);
+ signed_sum += (signed char) (*p++);
}
if (unsigned_sum == 0)
for (i = sizeof header->header.chksum; i-- != 0;)
{
unsigned_sum -= (unsigned char) header->header.chksum[i];
- signed_sum -= signed_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;
/* Good block. Decode file size and return. */
if (header->header.typeflag == LNKTYPE)
- current_stat.st_size = 0; /* links 0 size on tape */
+ current_stat_info.stat.st_size = 0; /* links 0 size on tape */
else
- current_stat.st_size = OFF_FROM_HEADER (header->header.size);
+ current_stat_info.stat.st_size = OFF_FROM_HEADER (header->header.size);
if (header->header.typeflag == GNUTYPE_LONGNAME
- || header->header.typeflag == GNUTYPE_LONGLINK)
+ || header->header.typeflag == GNUTYPE_LONGLINK
+ || header->header.typeflag == XHDTYPE
+ || header->header.typeflag == XGLTYPE)
{
- longp = ((header->header.typeflag == GNUTYPE_LONGNAME)
- ? &next_long_name
- : &next_long_link);
-
- set_next_block_after (header);
- if (*longp)
- free (*longp);
- size = current_stat.st_size;
- if (size != current_stat.st_size)
- xalloc_die ();
- bp = *longp = xmalloc (size);
-
- for (; size > 0; size -= written)
+ if (raw_extended_headers)
+ return HEADER_SUCCESS_EXTENDED;
+ else if (header->header.typeflag == GNUTYPE_LONGNAME
+ || header->header.typeflag == GNUTYPE_LONGLINK)
{
- data_block = find_next_block ();
- if (! data_block)
+ size_t name_size = current_stat_info.stat.st_size;
+ size = name_size - name_size % BLOCKSIZE + 2 * BLOCKSIZE;
+ 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)
{
- ERROR ((0, 0, _("Unexpected EOF in archive")));
- break;
+ if (next_long_name)
+ free (next_long_name);
+ next_long_name = header_copy;
+ next_long_name_blocks = size / BLOCKSIZE;
+ }
+ else
+ {
+ if (next_long_link)
+ free (next_long_link);
+ next_long_link = header_copy;
+ next_long_link_blocks = size / BLOCKSIZE;
+ }
+
+ set_next_block_after (header);
+ *header_copy = *header;
+ bp = header_copy->buffer + BLOCKSIZE;
+
+ for (size -= BLOCKSIZE; size > 0; size -= written)
+ {
+ data_block = find_next_block ();
+ if (! data_block)
+ {
+ ERROR ((0, 0, _("Unexpected EOF in archive")));
+ break;
+ }
+ 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 *)
+ (data_block->buffer + written - 1));
}
- 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 *)
- (data_block->buffer + written - 1));
+
+ *bp = '\0';
+ }
+ else if (header->header.typeflag == 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! */
}
else
{
- char *name;
- struct posix_header *h = ¤t_header->header;
+ char const *name;
+ struct posix_header const *h = ¤t_header->header;
char namebuf[sizeof h->prefix + 1 + NAME_FIELD_SIZE + 1];
- name = next_long_name;
- if (! name)
+ if (recent_long_name)
+ free (recent_long_name);
+
+ if (next_long_name)
+ {
+ name = next_long_name->buffer + BLOCKSIZE;
+ recent_long_name = next_long_name;
+ recent_long_name_blocks = next_long_name_blocks;
+ }
+ else
{
/* Accept file names as specified by POSIX.1-1996
section 10.1.1. */
- int posix_header = strcmp (h->magic, TMAGIC) == 0;
char *np = namebuf;
- if (posix_header && h->prefix[0])
+ if (h->prefix[0] && strcmp (h->magic, TMAGIC) == 0)
{
memcpy (np, h->prefix, sizeof h->prefix);
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';
name = namebuf;
+ recent_long_name = 0;
+ recent_long_name_blocks = 0;
}
- assign_string (¤t_file_name, name);
- if (next_long_name)
+ assign_string (¤t_stat_info.orig_file_name, name);
+ assign_string (¤t_stat_info.file_name, name);
+ current_stat_info.had_trailing_slash = strip_trailing_slashes (current_stat_info.file_name);
+
+ if (recent_long_link)
+ free (recent_long_link);
+
+ if (next_long_link)
{
- free (next_long_name);
- next_long_name = 0;
+ name = next_long_link->buffer + BLOCKSIZE;
+ recent_long_link = next_long_link;
+ recent_long_link_blocks = next_long_link_blocks;
}
-
- name = next_long_link;
- if (! name)
+ else
{
memcpy (namebuf, h->linkname, sizeof h->linkname);
namebuf[sizeof h->linkname] = '\0';
name = namebuf;
+ recent_long_link = 0;
+ recent_long_link_blocks = 0;
}
- assign_string (¤t_link_name, name);
- if (next_long_link)
- {
- free (next_long_link);
- next_long_link = 0;
- }
+ assign_string (¤t_stat_info.link_name, name);
return HEADER_SUCCESS;
}
}
}
-/*-------------------------------------------------------------------------.
-| Decode things from a file HEADER block into STAT_INFO, also setting |
-| *FORMAT_POINTER depending on the header block format. If DO_USER_GROUP, |
-| decode the user/group information (this is useful for extraction, but |
-| waste time when merely listing). |
-| |
-| read_header() has already decoded the checksum and length, so we don't. |
-| |
-| This routine should *not* be called twice for the same block, since the |
-| two calls might use different DO_USER_GROUP values and thus might end up |
-| with different uid/gid for the two calls. If anybody wants the uid/gid |
-| they should decode it first, and other callers should decode it without |
-| uid/gid before calling a routine, e.g. print_header, that assumes |
-| decoded data. |
-`-------------------------------------------------------------------------*/
+#define ISOCTAL(c) ((c)>='0'&&(c)<='7')
+
+/* Decode things from a file HEADER block into STAT_INFO, also setting
+ *FORMAT_POINTER depending on the header block format. If
+ DO_USER_GROUP, decode the user/group information (this is useful
+ for extraction, but waste time when merely listing).
+ read_header() has already decoded the checksum and length, so we don't.
+
+ This routine should *not* be called twice for the same block, since
+ the two calls might use different DO_USER_GROUP values and thus
+ might end up with different uid/gid for the two calls. If anybody
+ wants the uid/gid they should decode it first, and other callers
+ should decode it without uid/gid before calling a routine,
+ e.g. print_header, that assumes decoded data. */
void
-decode_header (union block *header, struct stat *stat_info,
+decode_header (union block *header, struct tar_stat_info *stat_info,
enum archive_format *format_pointer, int do_user_group)
{
enum archive_format format;
if (strcmp (header->header.magic, TMAGIC) == 0)
- format = POSIX_FORMAT;
+ {
+ if (header->star_header.prefix[130] == 0
+ && ISOCTAL (header->star_header.atime[0])
+ && header->star_header.atime[11] == ' '
+ && ISOCTAL (header->star_header.ctime[0])
+ && header->star_header.ctime[11] == ' ')
+ format = STAR_FORMAT;
+ else if (extended_header.size)
+ format = POSIX_FORMAT;
+ else
+ format = USTAR_FORMAT;
+ }
else if (strcmp (header->header.magic, OLDGNU_MAGIC) == 0)
format = OLDGNU_FORMAT;
else
format = V7_FORMAT;
*format_pointer = format;
- stat_info->st_mode = MODE_FROM_HEADER (header->header.mode);
- stat_info->st_mtime = TIME_FROM_HEADER (header->header.mtime);
+ 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);
+
+ stat_info->stat.st_atime = start_time;
+ stat_info->stat.st_ctime = start_time;
if (format == OLDGNU_FORMAT && incremental_option)
{
- stat_info->st_atime = TIME_FROM_HEADER (header->oldgnu_header.atime);
- stat_info->st_ctime = TIME_FROM_HEADER (header->oldgnu_header.ctime);
+ stat_info->stat.st_atime = TIME_FROM_HEADER (header->oldgnu_header.atime);
+ stat_info->stat.st_ctime = TIME_FROM_HEADER (header->oldgnu_header.ctime);
}
if (format == V7_FORMAT)
{
- stat_info->st_uid = UID_FROM_HEADER (header->header.uid);
- stat_info->st_gid = GID_FROM_HEADER (header->header.gid);
- stat_info->st_rdev = 0;
+ stat_info->stat.st_uid = UID_FROM_HEADER (header->header.uid);
+ stat_info->stat.st_gid = GID_FROM_HEADER (header->header.gid);
+ stat_info->stat.st_rdev = 0;
}
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. */
if (numeric_owner_option
|| !*header->header.uname
- || !uname_to_uid (header->header.uname, &stat_info->st_uid))
- stat_info->st_uid = UID_FROM_HEADER (header->header.uid);
+ || !uname_to_uid (header->header.uname, &stat_info->stat.st_uid))
+ stat_info->stat.st_uid = UID_FROM_HEADER (header->header.uid);
if (numeric_owner_option
|| !*header->header.gname
- || !gname_to_gid (header->header.gname, &stat_info->st_gid))
- stat_info->st_gid = GID_FROM_HEADER (header->header.gid);
+ || !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:
- stat_info->st_rdev
- = makedev (MAJOR_FROM_HEADER (header->header.devmajor),
- MINOR_FROM_HEADER (header->header.devminor));
- break;
-
case CHRTYPE:
- stat_info->st_rdev
- = makedev (MAJOR_FROM_HEADER (header->header.devmajor),
- MINOR_FROM_HEADER (header->header.devminor));
+ stat_info->stat.st_rdev = makedev (stat_info->devmajor,
+ stat_info->devminor);
break;
default:
- stat_info->st_rdev = 0;
+ stat_info->stat.st_rdev = 0;
}
}
-}
-/*------------------------------------------------------------------------.
-| 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. |
-`------------------------------------------------------------------------*/
+ 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;
+ }
+}
+/* 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. */
static uintmax_t
from_header (char const *where0, size_t digs, char const *type,
uintmax_t minus_minval, uintmax_t maxval)
nonzero digit is 1, we can't recover the original value
reliably; so do this only if the digit is 2 or more. This
catches the common case of 32-bit negative time stamps. */
- if ((overflow || maxval < value) && '2' <= *where1)
+ if ((overflow || maxval < value) && '2' <= *where1 && type)
{
/* Compute the negative of the input value, assuming two's
complement. */
if (overflow)
{
- ERROR ((0, 0,
- _("Archive octal value %.*s is out of %s range"),
- (int) (where - where1), where1, type));
+ if (type)
+ ERROR ((0, 0,
+ _("Archive octal value %.*s is out of %s range"),
+ (int) (where - where1), where1, type));
return -1;
}
}
- else if (type)
+ else if (*where == '-' || *where == '+')
{
- /* The following forms cannot appear as checksums, so we don't
- check for them if TYPE is null. */
-
- 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)
{
- /* 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)
+ warned_once = 1;
+ WARN ((0, 0,
+ _("Archive contains obsolescent base-64 headers")));
+ }
+ negative = *where++ == '-';
+ while (where != lim
+ && (dig = base64_map[(unsigned char) *where]) < 64)
+ {
+ if (value << LG_64 >> LG_64 != value)
{
- warned_once = 1;
- WARN ((0, 0,
- _("Archive contains obsolescent base-64 headers")));
- }
- negative = *where++ == '-';
- while (where != lim
- && (dig = base64_map[(unsigned char) *where]) < 64)
- {
- if (value << LG_64 >> LG_64 != value)
- {
- ERROR ((0, 0,
- _("Archive signed base-64 string `%.*s' is out of %s range"),
- (int) digs, where0, type));
- return -1;
- }
- value = (value << LG_64) | dig;
- where++;
+ char *string = alloca (digs + 1);
+ memcpy (string, where0, digs);
+ string[digs] = '\0';
+ if (type)
+ ERROR ((0, 0,
+ _("Archive signed base-64 string %s is out of %s range"),
+ quote (string), type));
+ return -1;
}
+ value = (value << LG_64) | dig;
+ where++;
}
- else if (*where == '\200' /* positive base-256 */
- || *where == '\377' /* negative base-256 */)
+ }
+ else if (*where == '\200' /* positive base-256 */
+ || *where == '\377' /* negative base-256 */)
+ {
+ /* Parse base-256 output. A nonnegative number N is
+ represented as (256**DIGS)/2 + N; a negative number -N is
+ represented as (256**DIGS) - N, i.e. as two's complement.
+ The representation guarantees that the leading bit is
+ always on, so that we don't confuse this format with the
+ others (assuming ASCII bytes of 8 bits or more). */
+ int signbit = *where & (1 << (LG_256 - 2));
+ uintmax_t topbits = (((uintmax_t) - signbit)
+ << (CHAR_BIT * sizeof (uintmax_t)
+ - LG_256 - (LG_256 - 2)));
+ value = (*where++ & ((1 << (LG_256 - 2)) - 1)) - signbit;
+ for (;;)
{
- /* Parse base-256 output. A nonnegative number N is
- represented as (256**DIGS)/2 + N; a negative number -N is
- represented as (256**DIGS) - N, i.e. as two's complement.
- The representation guarantees that the leading bit is
- always on, so that we don't confuse this format with the
- others (assuming ASCII bytes of 8 bits or more). */
- int signbit = *where & (1 << (LG_256 - 2));
- uintmax_t topbits = (((uintmax_t) - signbit)
- << (CHAR_BIT * sizeof (uintmax_t)
- - LG_256 - (LG_256 - 2)));
- value = (*where++ & ((1 << (LG_256 - 2)) - 1)) - signbit;
- for (;;)
+ value = (value << LG_256) + (unsigned char) *where++;
+ if (where == lim)
+ break;
+ if (((value << LG_256 >> LG_256) | topbits) != value)
{
- value = (value << LG_256) + (unsigned char) *where++;
- if (where == lim)
- break;
- if (((value << LG_256 >> LG_256) | topbits) != value)
- {
- ERROR ((0, 0,
- _("Archive base-256 value is out of %s range"),
- type));
- return -1;
- }
+ if (type)
+ ERROR ((0, 0,
+ _("Archive base-256 value is out of %s range"),
+ type));
+ return -1;
}
- negative = signbit;
- if (negative)
- value = -value;
}
+ negative = signbit;
+ if (negative)
+ value = -value;
}
if (where != lim && *where && !ISSPACE ((unsigned char) *where))
*--value_string = '-';
if (minus_minval)
*--minval_string = '-';
- ERROR ((0, 0, _("Archive value %s is out of %s range %s..%s"),
+ ERROR ((0, 0, _("Archive value %s is out of %s range %s.%s"),
value_string, type,
minval_string, STRINGIFY_BIGINT (maxval, maxval_buf)));
}
size_t
size_from_header (const char *p, size_t s)
{
- return from_header (p, s, "size_t", (uintmax_t) 0,
+ return from_header (p, s, "size_t", (uintmax_t) 0,
(uintmax_t) TYPE_MAXIMUM (size_t));
}
time_t
time_from_header (const char *p, size_t s)
{
- time_t t = from_header (p, s, "time_t",
- - (uintmax_t) TYPE_MINIMUM (time_t),
- (uintmax_t) TYPE_MAXIMUM (time_t));
- if (start_time < t && time (0) < t)
- WARN ((0, 0, _("Archive contains future timestamp %s"), tartime (t)));
- return t;
+ return from_header (p, s, "time_t",
+ - (uintmax_t) TYPE_MINIMUM (time_t),
+ (uintmax_t) TYPE_MAXIMUM (time_t));
}
uid_t
}
-/*----------------------------------------------------------------------.
-| Format O as a null-terminated decimal string into BUF _backwards_; |
-| return pointer to start of result. |
-`----------------------------------------------------------------------*/
+/* 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)
{
if (p)
{
char const *time_stamp = p + 4;
- for (p += 16; p[4] != '\n'; p++)
- p[0] = p[4];
+ for (p += 16; p[3] != '\n'; p++)
+ p[0] = p[3];
p[0] = '\0';
return time_stamp;
}
#else
/* Use ISO 8610 format. See:
http://www.cl.cam.ac.uk/~mgk25/iso-time.html */
- struct tm *tm = localtime (&t);
+ struct tm *tm = utc_option ? gmtime (&t) : localtime (&t);
if (tm)
{
- sprintf (buffer, "%04d-%02d-%02d %02d:%02d:%02d",
- tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+ 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);
return buffer;
}
return p;
}
-/*-------------------------------------------------------------------------.
-| Actually print it. |
-| |
-| Plain and fancy file header block logging. Non-verbose just prints the |
-| name, e.g. for "tar t" or "tar x". This should just contain file names, |
-| so it can be fed back into tar with xargs or the "-T" option. The |
-| verbose option can give a bunch of info, one line per file. I doubt |
-| anybody tries to parse its format, or if they do, they shouldn't. Unix |
-| tar is pretty random here anyway. |
-`-------------------------------------------------------------------------*/
+/* Actually print it.
+
+ Plain and fancy file header block logging. Non-verbose just prints
+ the name, e.g. for "tar t" or "tar x". This should just contain
+ file names, so it can be fed back into tar with xargs or the "-T"
+ option. The verbose option can give a bunch of info, one line per
+ file. I doubt anybody tries to parse its format, or if they do,
+ they shouldn't. Unix tar is pretty random here anyway. */
+
/* FIXME: Note that print_header uses the globals HEAD, HSTAT, and
- HEAD_STANDARD, which must be set up in advance. Not very clean... */
+ 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. */
#endif
void
-print_header (void)
+print_header (struct tar_stat_info *st, off_t block_ordinal)
{
char modes[11];
char const *time_stamp;
+ 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;
if (block_number_option)
{
char buf[UINTMAX_STRSIZE_BOUND];
+ if (block_ordinal < 0)
+ block_ordinal = current_block_ordinal ();
+ block_ordinal -= recent_long_name_blocks;
+ block_ordinal -= recent_long_link_blocks;
fprintf (stdlis, _("block %s: "),
- STRINGIFY_BIGINT (current_block_ordinal (), buf));
+ STRINGIFY_BIGINT (block_ordinal, buf));
}
if (verbose_option <= 1)
{
/* Just the fax, mam. */
- fprintf (stdlis, "%s\n", quotearg (current_file_name));
+ fprintf (stdlis, "%s\n", quotearg (temp_name));
}
else
{
case GNUTYPE_LONGNAME:
case GNUTYPE_LONGLINK:
+ modes[0] = 'L';
ERROR ((0, 0, _("Visible longname error")));
break;
case GNUTYPE_SPARSE:
case REGTYPE:
case AREGTYPE:
- case LNKTYPE:
modes[0] = '-';
- if (current_file_name[strlen (current_file_name) - 1] == '/')
+ if (temp_name[strlen (temp_name) - 1] == '/')
modes[0] = 'd';
break;
+ case LNKTYPE:
+ modes[0] = 'h';
+ break;
case GNUTYPE_DUMPDIR:
modes[0] = 'd';
break;
break;
}
- decode_mode (current_stat.st_mode, modes + 1);
+ decode_mode (st->stat.st_mode, modes + 1);
/* Time stamp. */
- time_stamp = tartime (current_stat.st_mtime);
+ time_stamp = tartime (st->stat.st_mtime);
/* User and group names. */
- if (*current_header->header.uname && current_format != V7_FORMAT
+ if (st->uname && current_format != V7_FORMAT
&& !numeric_owner_option)
- user = current_header->header.uname;
+ user = st->uname;
else
- user = STRINGIFY_BIGINT (UINTMAX_FROM_HEADER
- (current_header->header.uid),
- uform);
+ {
+ /* Try parsing it as an unsigned integer first, and as a
+ uid_t if that fails. This method can list positive user
+ ids that are too large to fit in a uid_t. */
+ uintmax_t u = from_header (current_header->header.uid,
+ sizeof current_header->header.uid, 0,
+ (uintmax_t) 0,
+ (uintmax_t) TYPE_MAXIMUM (uintmax_t));
+ if (u != -1)
+ user = STRINGIFY_BIGINT (u, uform);
+ else
+ {
+ sprintf (uform, "%ld",
+ (long) UID_FROM_HEADER (current_header->header.uid));
+ user = uform;
+ }
+ }
- if (*current_header->header.gname && current_format != V7_FORMAT
+ if (st->gname && current_format != V7_FORMAT
&& !numeric_owner_option)
- group = current_header->header.gname;
+ group = st->gname;
else
- group = STRINGIFY_BIGINT (UINTMAX_FROM_HEADER
- (current_header->header.gid),
- gform);
+ {
+ /* Try parsing it as an unsigned integer first, and as a
+ gid_t if that fails. This method can list positive group
+ ids that are too large to fit in a gid_t. */
+ uintmax_t g = from_header (current_header->header.gid,
+ sizeof current_header->header.gid, 0,
+ (uintmax_t) 0,
+ (uintmax_t) TYPE_MAXIMUM (uintmax_t));
+ if (g != -1)
+ group = STRINGIFY_BIGINT (g, gform);
+ else
+ {
+ sprintf (gform, "%ld",
+ (long) GID_FROM_HEADER (current_header->header.gid));
+ group = gform;
+ }
+ }
/* Format the file size or major/minor device numbers. */
case CHRTYPE:
case BLKTYPE:
strcpy (size,
- STRINGIFY_BIGINT (major (current_stat.st_rdev), uintbuf));
+ STRINGIFY_BIGINT (major (st->stat.st_rdev), uintbuf));
strcat (size, ",");
strcat (size,
- STRINGIFY_BIGINT (minor (current_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.st_size, uintbuf));
+ /* st->stat.st_size keeps stored file size */
+ strcpy (size, STRINGIFY_BIGINT (st->stat.st_size, uintbuf));
break;
}
fprintf (stdlis, "%s %s/%s %*s%s %s",
modes, user, group, ugswidth - pad, "", size, time_stamp);
- fprintf (stdlis, " %s", quotearg (current_file_name));
+ fprintf (stdlis, " %s", quotearg (temp_name));
switch (current_header->header.typeflag)
{
case SYMTYPE:
- fprintf (stdlis, " -> %s\n", quotearg (current_link_name));
+ fprintf (stdlis, " -> %s\n", quotearg (st->link_name));
break;
case LNKTYPE:
- fprintf (stdlis, _(" link to %s\n"), quotearg (current_link_name));
+ fprintf (stdlis, _(" link to %s\n"), quotearg (st->link_name));
break;
default:
- fprintf (stdlis, _(" unknown file type `%c'\n"),
- current_header->header.typeflag);
+ {
+ char type_string[2];
+ type_string[0] = current_header->header.typeflag;
+ type_string[1] = '\0';
+ fprintf (stdlis, _(" unknown file type %s\n"),
+ quote (type_string));
+ }
break;
case AREGTYPE:
putc ('\n', stdlis);
break;
+ case GNUTYPE_LONGLINK:
+ fprintf (stdlis, _("--Long Link--\n"));
+ break;
+
+ case GNUTYPE_LONGNAME:
+ fprintf (stdlis, _("--Long Name--\n"));
+ break;
+
case GNUTYPE_VOLHDR:
fprintf (stdlis, _("--Volume Header--\n"));
break;
fflush (stdlis);
}
-/*--------------------------------------------------------------.
-| Print a similar line when we make a directory automatically. |
-`--------------------------------------------------------------*/
-
+/* 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];
}
fprintf (stdlis, "%s %*s %.*s\n", modes, ugswidth + DATEWIDTH,
- _("Creating directory:"), length, quotearg (pathname));
+ _("Creating directory:"), length, quotearg (dirname));
}
}
-/*--------------------------------------------------------.
-| Skip over SIZE bytes of data in blocks in the archive. |
-`--------------------------------------------------------*/
-
+/* Skip over SIZE bytes of data in blocks in the archive. */
void
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 ();
}
}
-/*---.
-| ? |
-`---*/
-
+/* Skip the current member in the archive. */
void
-skip_extended_headers (void)
+skip_member (void)
{
- union block *exhdr;
+ char save_typeflag = current_header->header.typeflag;
+ set_next_block_after (current_header);
- 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.file_name);
+
+ if (sparse_member_p (¤t_stat_info))
+ sparse_skip_file (¤t_stat_info);
+ else if (save_typeflag != DIRTYPE)
+ skip_file (current_stat_info.stat.st_size);
}