def _modify_read_only_flag_for(self, source: Subvolume) -> Subvolume:
logger = self._logger
source_logical_path = source.logical_path
try:
logger.info(
f"Modifying the '{source_logical_path}' snapshot's read-only flag."
)
source_filesystem_path_str = str(source.filesystem_path)
btrfsutil.set_subvolume_read_only(source_filesystem_path_str,
False)
except btrfsutil.BtrfsUtilError as e:
logger.exception("btrfsutil call failed!")
raise SubvolumeError(
f"Could not modify the '{source_logical_path}' snapshot's read-only flag!"
) from e
return source.as_writable()
def test_read_only(self):
for arg in self.path_or_fd(self.mountpoint):
with self.subTest(type=type(arg)):
btrfsutil.set_subvolume_read_only(arg)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
self.assertFalse(btrfsutil.get_subvolume_read_only(arg))
self.assertFalse(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, True)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
def test_read_only(self):
for arg in self.path_or_fd(self.mountpoint):
with self.subTest(type=type(arg)):
btrfsutil.set_subvolume_read_only(arg)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
self.assertFalse(btrfsutil.get_subvolume_read_only(arg))
self.assertFalse(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, True)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)