/* Extract files from a tar archive.
Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000,
- 2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2001, 2003, 2004, 2005, 2006, 2007, 2010 Free Software Foundation, Inc.
Written by John Gilmore, on 1985-11-19.
#include <utimens.h>
#include <errno.h>
#include <xgetcwd.h>
+#include <priv-set.h>
#include "common.h"
char typeflag)
{
mode_t mode;
-
+ bool failed;
+
if (0 < same_permissions_option
&& permstatus != INTERDIR_PERMSTATUS)
{
mode = cur_info->st_mode ^ invert_permissions;
}
- if (chmod (file_name, mode) != 0)
+ failed = chmod (file_name, mode) != 0;
+ if (failed && errno == EPERM)
+ {
+ /* On Solaris, chmod may fail if we don't have PRIV_ALL. */
+ if (priv_set_restore_linkdir () == 0)
+ {
+ failed = chmod (file_name, mode) != 0;
+ priv_set_remove_linkdir ();
+ }
+ }
+ if (failed)
chmod_error_details (file_name, mode);
}
check_time (char const *file_name, struct timespec t)
{
if (t.tv_sec <= 0)
- WARN ((0, 0, _("%s: implausibly old time stamp %s"),
- file_name, tartime (t, true)));
+ WARNOPT (WARN_TIMESTAMP,
+ (0, 0, _("%s: implausibly old time stamp %s"),
+ file_name, tartime (t, true)));
else if (timespec_cmp (volume_start_time, t) < 0)
{
struct timespec now;
diff.tv_nsec += BILLION;
diff.tv_sec--;
}
- WARN ((0, 0, _("%s: time stamp %s is %s s in the future"),
- file_name, tartime (t, true), code_timespec (diff, buf)));
+ WARNOPT (WARN_TIMESTAMP,
+ (0, 0, _("%s: time stamp %s is %s s in the future"),
+ file_name, tartime (t, true), code_timespec (diff, buf)));
}
}
}
if (stat (file_name, &st))
{
- stat_warn (file_name);
- /* Be on the safe side: if the file does exist assume it is newer */
- return errno != ENOENT;
+ if (errno != ENOENT)
+ {
+ stat_warn (file_name);
+ /* Be on the safe side: if the file does exist assume it is newer */
+ return true;
+ }
+ return false;
}
if (!S_ISDIR (st.st_mode)
&& tar_timespec_cmp (tar_stat->mtime, get_stat_mtime (&st)) <= 0)
}
if (S_ISDIR (st.st_mode))
{
+ status = 0;
mode = st.st_mode;
break;
}
if (!conttype_diagnosed)
{
conttype_diagnosed = 1;
- WARN ((0, 0, _("Extracting contiguous files as regular files")));
+ WARNOPT (WARN_CONTIGUOUS_CAST,
+ (0, 0, _("Extracting contiguous files as regular files")));
}
}
fd = open (file_name, openflag, mode);
struct stat st;
while ((fd = open (file_name, O_WRONLY | O_CREAT | O_EXCL, 0)) < 0)
- if (! maybe_recoverable (file_name, interdir_made))
- break;
+ {
+ switch (maybe_recoverable (file_name, interdir_made))
+ {
+ case RECOVER_OK:
+ continue;
+
+ case RECOVER_SKIP:
+ return 0;
+
+ case RECOVER_NO:
+ open_error (file_name);
+ return -1;
+ }
+ }
- if (fd < 0)
- open_error (file_name);
- else if (fstat (fd, &st) != 0)
+ if (fstat (fd, &st) != 0)
{
stat_error (file_name);
close (fd);
{
int interdir_made = 0;
char const *link_name;
-
+ int rc;
+
link_name = current_stat_info.link_name;
if (! absolute_names_option && contains_dot_dot (link_name))
errno = e;
}
- while (maybe_recoverable (file_name, &interdir_made));
+ while ((rc = maybe_recoverable (file_name, &interdir_made)) == RECOVER_OK);
+ if (rc == RECOVER_SKIP)
+ return 0;
if (!(incremental_option && errno == EEXIST))
{
link_error (link_name, file_name);
extract_symlink (char *file_name, int typeflag)
{
#ifdef HAVE_SYMLINK
- int status;
int interdir_made = 0;
if (! absolute_names_option
|| contains_dot_dot (current_stat_info.link_name)))
return create_placeholder_file (file_name, true, &interdir_made);
- while ((status = symlink (current_stat_info.link_name, file_name)))
- if (!maybe_recoverable (file_name, &interdir_made))
- break;
-
- if (status == 0)
- set_stat (file_name, ¤t_stat_info, NULL, 0, 0, SYMTYPE);
- else
- symlink_error (current_stat_info.link_name, file_name);
- return status;
+ while (symlink (current_stat_info.link_name, file_name))
+ switch (maybe_recoverable (file_name, &interdir_made))
+ {
+ case RECOVER_OK:
+ continue;
+
+ case RECOVER_SKIP:
+ return 0;
+
+ case RECOVER_NO:
+ symlink_error (current_stat_info.link_name, file_name);
+ return -1;
+ }
+
+ set_stat (file_name, ¤t_stat_info, NULL, 0, 0, SYMTYPE);
+ return 0;
#else
static int warned_once;
if (!warned_once)
{
warned_once = 1;
- WARN ((0, 0, _("Attempting extraction of symbolic links as hard links")));
+ WARNOPT (WARN_SYMBOLIC_CAST,
+ (0, 0,
+ _("Attempting extraction of symbolic links as hard links")));
}
return extract_link (file_name, typeflag);
#endif
mode_t invert_permissions =
0 < same_owner_option ? mode & (S_IRWXG | S_IRWXO) : 0;
- do
- status = mknod (file_name, mode ^ invert_permissions,
- current_stat_info.stat.st_rdev);
- while (status && maybe_recoverable (file_name, &interdir_made));
+ while (mknod (file_name, mode ^ invert_permissions,
+ current_stat_info.stat.st_rdev))
+ switch (maybe_recoverable (file_name, &interdir_made))
+ {
+ case RECOVER_OK:
+ continue;
+
+ case RECOVER_SKIP:
+ return 0;
+
+ case RECOVER_NO:
+ mknod_error (file_name);
+ return -1;
+ }
- if (status != 0)
- mknod_error (file_name);
- else
- set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
- ARCHIVED_PERMSTATUS, typeflag);
+ set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
+ ARCHIVED_PERMSTATUS, typeflag);
return status;
}
#endif
0 < same_owner_option ? mode & (S_IRWXG | S_IRWXO) : 0;
while ((status = mkfifo (file_name, mode)) != 0)
- if (!maybe_recoverable (file_name, &interdir_made))
- break;
+ switch (maybe_recoverable (file_name, &interdir_made))
+ {
+ case RECOVER_OK:
+ continue;
+
+ case RECOVER_SKIP:
+ return 0;
+
+ case RECOVER_NO:
+ mkfifo_error (file_name);
+ return -1;
+ }
- if (status == 0)
- set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
- ARCHIVED_PERMSTATUS, typeflag);
- else
- mkfifo_error (file_name);
- return status;
+ set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
+ ARCHIVED_PERMSTATUS, typeflag);
+ return 0;
}
#endif
static int
extract_volhdr (char *file_name, int typeflag)
{
- if (verbose_option)
- fprintf (stdlis, _("Reading %s\n"), quote (current_stat_info.file_name));
skip_member ();
return 0;
}
break;
default:
- WARN ((0, 0,
- _("%s: Unknown file type `%c', extracted as normal file"),
- quotearg_colon (file_name), typeflag));
+ WARNOPT (WARN_UNKNOWN_CAST,
+ (0, 0,
+ _("%s: Unknown file type `%c', extracted as normal file"),
+ quotearg_colon (file_name), typeflag));
*fun = extract_file;
}
case KEEP_NEWER_FILES:
if (file_newer_p (file_name, ¤t_stat_info))
{
- WARN ((0, 0, _("Current %s is newer or same age"),
- quote (file_name)));
+ WARNOPT (WARN_IGNORE_NEWER,
+ (0, 0, _("Current %s is newer or same age"),
+ quote (file_name)));
return 0;
}
break;
char typeflag;
tar_extractor_t fun;
+ fatal_exit_hook = extract_finish;
+
+ /* Try to disable the ability to unlink a directory. */
+ priv_set_remove_linkdir ();
+
set_next_block_after (current_header);
decode_header (current_header, ¤t_stat_info, ¤t_format, 1);
if (!current_stat_info.file_name[0]
/* Print the block from current_header and current_stat. */
if (verbose_option)
- print_header (¤t_stat_info, -1);
+ print_header (¤t_stat_info, current_header, -1);
/* Restore stats for all non-ancestor directories, unless
it is an incremental archive.
}
return true;
}
-
-void
-fatal_exit (void)
-{
- extract_finish ();
- error (TAREXIT_FAILURE, 0, _("Error is not recoverable: exiting now"));
- abort ();
-}
-
-void
-xalloc_die (void)
-{
- error (0, 0, "%s", _("memory exhausted"));
- fatal_exit ();
-}
projects / chaz / tar / blobdiff