[PATCH 5.18 781/879] selftests/landlock: Extend access right tests to directories

Greg Kroah-Hartman
2022-06-08T00:33:33Z

From: Mickaël Salaün <mic@digikod.net>

commit d18955d094d09a220cf8f533f5e896a2fe31575a upstream.

Make sure that all filesystem access rights can be tied to directories.

Rename layout1.file_access_rights to layout1.file_and_dir_access_rights
to reflect this change.

Cc: Shuah Khan <shuah@kernel.org>
Link: https://lore.kernel.org/r/20220506160820.524344-6-mic@digikod.net
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/landlock/fs_test.c | 30 +++++++++++++++++++++--------
1 file changed, 22 insertions(+), 8 deletions(-)

--- a/tools/testing/selftests/landlock/fs_test.c
+++ b/tools/testing/selftests/landlock/fs_test.c
@@ -418,11 +418,12 @@ TEST_F_FORK(layout1, inval)

/* clang-format on */

-TEST_F_FORK(layout1, file_access_rights)
+TEST_F_FORK(layout1, file_and_dir_access_rights)
{
__u64 access;
int err;
- struct landlock_path_beneath_attr path_beneath = {};
+ struct landlock_path_beneath_attr path_beneath_file = {},
+ path_beneath_dir = {};
struct landlock_ruleset_attr ruleset_attr = {
.handled_access_fs = ACCESS_ALL,
};
@@ -432,20 +433,33 @@ TEST_F_FORK(layout1, file_access_rights)
ASSERT_LE(0, ruleset_fd);

/* Tests access rights for files. */
- path_beneath.parent_fd = open(file1_s1d2, O_PATH | O_CLOEXEC);
- ASSERT_LE(0, path_beneath.parent_fd);
+ path_beneath_file.parent_fd = open(file1_s1d2, O_PATH | O_CLOEXEC);
+ ASSERT_LE(0, path_beneath_file.parent_fd);
+
+ /* Tests access rights for directories. */
+ path_beneath_dir.parent_fd =
+ open(dir_s1d2, O_PATH | O_DIRECTORY | O_CLOEXEC);
+ ASSERT_LE(0, path_beneath_dir.parent_fd);
+
for (access = 1; access <= ACCESS_LAST; access <<= 1) {
- path_beneath.allowed_access = access;
+ path_beneath_dir.allowed_access = access;
+ ASSERT_EQ(0, landlock_add_rule(ruleset_fd,
+ LANDLOCK_RULE_PATH_BENEATH,
+ &path_beneath_dir, 0));
+
+ path_beneath_file.allowed_access = access;
err = landlock_add_rule(ruleset_fd, LANDLOCK_RULE_PATH_BENEATH,
- &path_beneath, 0);
- if ((access | ACCESS_FILE) == ACCESS_FILE) {
+ &path_beneath_file, 0);
+ if (access & ACCESS_FILE) {
ASSERT_EQ(0, err);
} else {
ASSERT_EQ(-1, err);
ASSERT_EQ(EINVAL, errno);
}
}
- ASSERT_EQ(0, close(path_beneath.parent_fd));
+ ASSERT_EQ(0, close(path_beneath_file.parent_fd));
+ ASSERT_EQ(0, close(path_beneath_dir.parent_fd));
+ ASSERT_EQ(0, close(ruleset_fd));
}

TEST_F_FORK(layout1, unknown_access_rights)