From: Mickaël Salaün <mic@xxxxxxxxxxx> commit c56b3bf566da5a0dd3b58ad97a614b0928b06ebf upstream. Make sure that trying to use unknown access rights returns an error. Cc: Shuah Khan <shuah@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220506160820.524344-5-mic@xxxxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Mickaël Salaün <mic@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/testing/selftests/landlock/fs_test.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/tools/testing/selftests/landlock/fs_test.c +++ b/tools/testing/selftests/landlock/fs_test.c @@ -448,6 +448,22 @@ TEST_F_FORK(layout1, file_access_rights) ASSERT_EQ(0, close(path_beneath.parent_fd)); } +TEST_F_FORK(layout1, unknown_access_rights) +{ + __u64 access_mask; + + for (access_mask = 1ULL << 63; access_mask != ACCESS_LAST; + access_mask >>= 1) { + struct landlock_ruleset_attr ruleset_attr = { + .handled_access_fs = access_mask, + }; + + ASSERT_EQ(-1, landlock_create_ruleset(&ruleset_attr, + sizeof(ruleset_attr), 0)); + ASSERT_EQ(EINVAL, errno); + } +} + static void add_path_beneath(struct __test_metadata *const _metadata, const int ruleset_fd, const __u64 allowed_access, const char *const path)
