def __restore_attributes(self, tar_info, path):
"""Restores all attributes of a restored file."""
if os.geteuid() == 0:
try:
try:
uid = utils.getpwnam(tar_info.uname)[2]
except KeyError:
uid = tar_info.uid
try:
gid = utils.getgrnam(tar_info.gname)[2]
except KeyError:
gid = tar_info.gid
os.lchown(path, uid, gid)
except Exception as e:
if not psys.is_errno(e, errno.ENOENT):
LOG.error("Failed to set owner of '%s': %s.", path, psys.e(e))
self.__ok = False
if not tar_info.issym():
try:
os.chmod(path, tar_info.mode)
except Exception as e:
if not psys.is_errno(e, errno.ENOENT):
LOG.error("Failed to change permissions of '%s': %s.", path, psys.e(e))
self.__ok = False
try:
os.utime(path, ( tar_info.mtime, tar_info.mtime ))
except Exception as e:
if not psys.is_errno(e, errno.ENOENT):
LOG.error("Failed to change access and modification time of '%s': %s.", path, psys.e(e))
self.__ok = False
def __backup_path(self, path, filters, toplevel):
"""Backups the specified path."""
ok = True
LOG.info("Backing up '%s'...", path)
try:
stat_info = os.lstat(path)
if stat.S_ISREG(stat_info.st_mode):
self.__backup_file(path)
else:
if stat.S_ISLNK(stat_info.st_mode):
try:
link_target = os.readlink(path)
except EnvironmentError as e:
if e.errno == errno.EINVAL:
raise FileTypeChangedError()
else:
raise
else:
link_target = None
self.__backup.add_file(
path, stat_info, link_target = link_target)
if stat.S_ISDIR(stat_info.st_mode):
prefix = toplevel + os.path.sep
for filename in os.listdir(path):
file_path = os.path.join(path, filename)
for allow, regex in filters:
if not file_path.startswith(prefix):
raise LogicalError()
if regex.search(file_path[len(prefix):]):
if allow:
self.__backup_path(file_path, filters, toplevel)
else:
LOG.info("Filtering out '%s'...", file_path)
break
else:
self.__backup_path(file_path, filters, toplevel)
except FileTypeChangedError as e:
LOG.error("Failed to backup '%s': it has suddenly changed its type during the backup.", path)
ok = False
except Exception as e:
if psys.is_errno(e, (errno.ENOENT, errno.ENOTDIR)) and path != toplevel:
LOG.warning("Failed to backup '%s': it has suddenly vanished.", path)
else:
LOG.error("Failed to backup '%s': %s.", path, psys.e(e))
ok = False
return ok
