#include <system.h>
#include <quotearg.h>
-#include <utimens.h>
#include <errno.h>
#include <priv-set.h>
mode_t invert_permissions;
enum permstatus permstatus;
bool after_links;
+ int change_dir;
char file_name[1];
};
uid_t uid;
gid_t gid;
+ /* The directory that the sources and target are relative to. */
+ int change_dir;
+
/* A list of sources for this link. The sources are all to be
hard-linked together. */
struct string_list *sources;
}
}
+/* Use fchmod if possible, chmod otherwise. */
+static int
+fdchmod (char const *file, int fd, mode_t mode)
+{
+#if HAVE_FCHMOD
+ if (0 <= fd)
+ return fchmod (fd, mode);
+#endif
+ return chmod (file, mode);
+}
+
+/* Use fchown if possible, chown otherwise. */
+static int
+fdchown (char const *file, int fd, uid_t uid, gid_t gid)
+{
+#if HAVE_FCHOWN
+ if (0 <= fd)
+ return fchown (fd, uid, gid);
+#endif
+ return chown (file, uid, gid);
+}
+
+/* Use fstat if possible, stat otherwise. */
+static int
+fdstat (char const *file, int fd, struct stat *st)
+{
+ if (0 <= fd)
+ return fstat (fd, st);
+ return stat (file, st);
+}
+
/* If restoring permissions, restore the mode for FILE_NAME from
- information given in *STAT_INFO (where *CUR_INFO gives
+ information given in *STAT_INFO (where FD is a file descriptor
+ for the file if FD is nonnegative, and where *CUR_INFO gives
the current status if CUR_INFO is nonzero); otherwise invert the
INVERT_PERMISSIONS bits from the file's current permissions.
PERMSTATUS specifies the status of the file's permissions.
static void
set_mode (char const *file_name,
struct stat const *stat_info,
- struct stat const *cur_info,
+ int fd, struct stat const *cur_info,
mode_t invert_permissions, enum permstatus permstatus,
char typeflag)
{
struct stat st;
if (! cur_info)
{
- if (stat (file_name, &st) != 0)
+ if (fdstat (file_name, fd, &st) != 0)
{
stat_error (file_name);
return;
mode = cur_info->st_mode ^ invert_permissions;
}
- chmod_errno = chmod (file_name, mode) == 0 ? 0 : errno;
+ chmod_errno = fdchmod (file_name, fd, mode) == 0 ? 0 : errno;
if (chmod_errno == EPERM && (mode & S_ISUID) != 0)
{
/* On Solaris, chmod may fail if we don't have PRIV_ALL, because
(2009-09-03). */
if (priv_set_restore_linkdir () == 0)
{
- chmod_errno = chmod (file_name, mode) == 0 ? 0 : errno;
+ chmod_errno = fdchmod (file_name, fd, mode) == 0 ? 0 : errno;
priv_set_remove_linkdir ();
}
}
/* Restore stat attributes (owner, group, mode and times) for
FILE_NAME, using information given in *ST.
+ If FD is nonnegative, it is a file descriptor for the file.
If CUR_INFO is nonzero, *CUR_INFO is the
file's current status.
If not restoring permissions, invert the
static void
set_stat (char const *file_name,
struct tar_stat_info const *st,
- struct stat const *cur_info,
+ int fd, struct stat const *cur_info,
mode_t invert_permissions, enum permstatus permstatus,
char typeflag)
{
if (! touch_option && permstatus != INTERDIR_PERMSTATUS)
{
- /* We set the accessed time to `now', which is really the time we
- started extracting files, unless incremental_option is used, in
- which case .st_atime is used. */
-
- /* FIXME: incremental_option should set ctime too, but how? */
-
struct timespec ts[2];
if (incremental_option)
ts[0] = st->atime;
else
- ts[0] = start_time;
+ ts[0].tv_nsec = UTIME_NOW;
ts[1] = st->mtime;
- if (utimens (file_name, ts) != 0)
+ if (fd_utimensat (fd, AT_FDCWD, file_name, ts, 0) != 0)
utime_error (file_name);
else
{
- check_time (file_name, ts[0]);
+ if (incremental_option)
+ check_time (file_name, ts[0]);
check_time (file_name, ts[1]);
}
}
}
else
{
- chown_result = chown (file_name, st->stat.st_uid, st->stat.st_gid);
+ chown_result = fdchown (file_name, fd,
+ st->stat.st_uid, st->stat.st_gid);
}
if (chown_result == 0)
}
if (typeflag != SYMTYPE)
- set_mode (file_name, &st->stat, cur_info,
+ set_mode (file_name, &st->stat, fd, cur_info,
invert_permissions, permstatus, typeflag);
}
data->invert_permissions = invert_permissions;
data->permstatus = permstatus;
data->after_links = 0;
+ data->change_dir = chdir_current;
strcpy (data->file_name, file_name);
delayed_set_stat_head = data;
}
&& memcmp (file_name, data->file_name, data->file_name_len) == 0))
break;
+ chdir_do (data->change_dir);
+
if (check_for_renamed_directories)
{
cur_info = &st;
sb.stat.st_gid = data->gid;
sb.atime = data->atime;
sb.mtime = data->mtime;
- set_stat (data->file_name, &sb, cur_info,
+ set_stat (data->file_name, &sb, -1, cur_info,
data->invert_permissions, data->permstatus, DIRTYPE);
}
if (to_stdout_option)
return 0;
+ if (! to_command_option)
+ set_stat (file_name, ¤t_stat_info, fd, NULL, invert_permissions,
+ (old_files_option == OVERWRITE_OLD_FILES
+ ? UNKNOWN_PERMSTATUS : ARCHIVED_PERMSTATUS),
+ typeflag);
+
status = close (fd);
if (status < 0)
close_error (file_name);
if (to_command_option)
sys_wait_command ();
- else
- set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
- (old_files_option == OVERWRITE_OLD_FILES ?
- UNKNOWN_PERMSTATUS : ARCHIVED_PERMSTATUS),
- typeflag);
return status;
}
p->uid = current_stat_info.stat.st_uid;
p->gid = current_stat_info.stat.st_gid;
}
+ p->change_dir = chdir_current;
p->sources = xmalloc (offsetof (struct string_list, string)
+ strlen (file_name) + 1);
p->sources->next = 0;
struct delayed_link *ds = delayed_link_head;
if (ds && lstat (link_name, &st1) == 0)
for (; ds; ds = ds->next)
- if (ds->dev == st1.st_dev
+ if (ds->change_dir == chdir_current
+ && ds->dev == st1.st_dev
&& ds->ino == st1.st_ino
&& timespec_cmp (ds->ctime, get_stat_ctime (&st1)) == 0)
{
return -1;
}
- set_stat (file_name, ¤t_stat_info, NULL, 0, 0, SYMTYPE);
+ set_stat (file_name, ¤t_stat_info, -1, NULL, 0, 0, SYMTYPE);
return 0;
#else
return -1;
}
- set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
+ set_stat (file_name, ¤t_stat_info, -1, NULL, invert_permissions,
ARCHIVED_PERMSTATUS, typeflag);
return 0;
}
return -1;
}
- set_stat (file_name, ¤t_stat_info, NULL, invert_permissions,
+ set_stat (file_name, ¤t_stat_info, -1, NULL, invert_permissions,
ARCHIVED_PERMSTATUS, typeflag);
return 0;
}
it is an incremental archive.
(see NOTICE in the comment to delay_set_stat above) */
if (!delay_directory_restore_option)
- apply_nonancestor_delayed_set_stat (current_stat_info.file_name, 0);
+ {
+ int dir = chdir_current;
+ apply_nonancestor_delayed_set_stat (current_stat_info.file_name, 0);
+ chdir_do (dir);
+ }
/* Take a safety backup of a previously existing file. */
}
-/* Extract the symbolic links whose final extraction were delayed. */
+/* Extract the links whose final extraction were delayed. */
static void
apply_delayed_links (void)
{
struct string_list *sources = ds->sources;
char const *valid_source = 0;
+ chdir_do (ds->change_dir);
+
for (sources = ds->sources; sources; sources = sources->next)
{
char const *source = sources->string;
struct tar_stat_info st1;
st1.stat.st_uid = ds->uid;
st1.stat.st_gid = ds->gid;
- set_stat (source, &st1, NULL, 0, 0, SYMTYPE);
+ set_stat (source, &st1, -1, NULL, 0, 0, SYMTYPE);
valid_source = source;
}
}
projects / chaz / tar / blobdiff