#include <quotearg.h>
#include <utimens.h>
#include <errno.h>
-#include <xgetcwd.h>
#include <priv-set.h>
#include "common.h"
mode_t invert_permissions;
enum permstatus permstatus;
bool after_links;
+ int change_dir;
char file_name[1];
};
/* The next delayed link in the list. */
struct delayed_link *next;
- /* The device, inode number and last-modified time of the placeholder. */
+ /* The device, inode number and ctime of the placeholder. Use
+ ctime, not mtime, to make false matches less likely if some
+ other process removes the placeholder. */
dev_t dev;
ino_t ino;
- struct timespec mtime;
+ struct timespec ctime;
/* True if the link is symbolic. */
bool is_symlink;
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;
char typeflag)
{
mode_t mode;
- bool failed;
+ int chmod_errno;
if (0 < same_permissions_option
&& permstatus != INTERDIR_PERMSTATUS)
mode = cur_info->st_mode ^ invert_permissions;
}
- failed = chmod (file_name, mode) != 0;
- if (failed && errno == EPERM)
+ chmod_errno = chmod (file_name, mode) == 0 ? 0 : errno;
+ if (chmod_errno == EPERM && (mode & S_ISUID) != 0)
{
- /* On Solaris, chmod may fail if we don't have PRIV_ALL. */
+ /* On Solaris, chmod may fail if we don't have PRIV_ALL, because
+ setuid-root files would otherwise be a backdoor. See
+ http://opensolaris.org/jive/thread.jspa?threadID=95826
+ (2009-09-03). */
if (priv_set_restore_linkdir () == 0)
{
- failed = chmod (file_name, mode) != 0;
+ chmod_errno = chmod (file_name, mode) == 0 ? 0 : errno;
priv_set_remove_linkdir ();
}
}
- if (failed)
- chmod_error_details (file_name, mode);
+ if (chmod_errno)
+ {
+ errno = chmod_errno;
+ chmod_error_details (file_name, mode);
+ }
}
/* Check time after successfully setting FILE_NAME's time stamp to T. */
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;
}
properly restored on returning RECOVER_NO. */
static int
-maybe_recoverable (char *file_name, int *interdir_made)
+maybe_recoverable (char *file_name, bool *interdir_made)
{
int e = errno;
errno = ENOENT;
return RECOVER_NO;
}
- *interdir_made = 1;
+ *interdir_made = true;
return RECOVER_OK;
default:
&& 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;
{
int status;
mode_t mode;
- int interdir_made = 0;
+ bool interdir_made = false;
/* Save 'root device' to avoid purging mount points. */
if (one_file_system_option && root_device == 0)
{
struct stat st;
- char *dir = xgetcwd ();
- if (deref_stat (true, dir, &st))
- stat_diag (dir);
+ if (stat (".", &st) != 0)
+ stat_diag (".");
else
root_device = st.st_dev;
- free (dir);
}
if (incremental_option)
int status;
size_t count;
size_t written;
- int interdir_made = 0;
+ bool interdir_made = false;
mode_t mode = current_stat_info.stat.st_mode & MODE_RWX & ~ current_umask;
mode_t invert_permissions =
0 < same_owner_option ? mode & (S_IRWXG | S_IRWXO) : 0;
}
}
- mv_begin (¤t_stat_info);
+ mv_begin_read (¤t_stat_info);
if (current_stat_info.is_sparse)
sparse_extract_file (fd, ¤t_stat_info, &size);
else
process. */
static int
-create_placeholder_file (char *file_name, bool is_symlink, int *interdir_made)
+create_placeholder_file (char *file_name, bool is_symlink, bool *interdir_made)
{
int fd;
struct stat st;
delayed_link_head = p;
p->dev = st.st_dev;
p->ino = st.st_ino;
- p->mtime = get_stat_mtime (&st);
+ p->ctime = get_stat_ctime (&st);
p->is_symlink = is_symlink;
if (is_symlink)
{
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;
static int
extract_link (char *file_name, int typeflag)
{
- int interdir_made = 0;
+ bool interdir_made = false;
char const *link_name;
int rc;
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->mtime, get_stat_mtime (&st1)) == 0)
+ && timespec_cmp (ds->ctime, get_stat_ctime (&st1)) == 0)
{
struct string_list *p = xmalloc (offsetof (struct string_list, string)
+ strlen (file_name) + 1);
extract_symlink (char *file_name, int typeflag)
{
#ifdef HAVE_SYMLINK
- int interdir_made = 0;
+ bool interdir_made = false;
if (! absolute_names_option
&& (IS_ABSOLUTE_FILE_NAME (current_stat_info.link_name)
static int
extract_node (char *file_name, int typeflag)
{
- int interdir_made = 0;
+ bool interdir_made = false;
mode_t mode = current_stat_info.stat.st_mode & ~ current_umask;
mode_t invert_permissions =
0 < same_owner_option ? mode & (S_IRWXG | S_IRWXO) : 0;
extract_fifo (char *file_name, int typeflag)
{
int status;
- int interdir_made = 0;
+ bool interdir_made = false;
mode_t mode = current_stat_info.stat.st_mode & ~ current_umask;
mode_t invert_permissions =
0 < same_owner_option ? mode & (S_IRWXG | S_IRWXO) : 0;
fatal_exit_hook = extract_finish;
- /* Try to disable the ability to unlink a directory. */
- priv_set_remove_linkdir ();
-
set_next_block_after (current_header);
if (!current_stat_info.file_name[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;
if (lstat (source, &st) == 0
&& st.st_dev == ds->dev
&& st.st_ino == ds->ino
- && timespec_cmp (get_stat_mtime (&st), ds->mtime) == 0)
+ && timespec_cmp (get_stat_ctime (&st), ds->ctime) == 0)
{
/* Unlink the placeholder, then create a hard link if possible,
a symbolic link otherwise. */
projects / chaz / tar / blobdiff