Add and use a layout0 test fixture to not populate the tmpfs filesystem if it is not required for tests: unknown_access_rights, proc_nsfs, unpriv and max_layers.

This doesn't change these tests but it speeds up their setup and makes them less prone to error. This prepare the ground for a next commit.

Cc: stable@vger.kernel.org Signed-off-by: Mickaël Salaün mic@digikod.net Link: https://lore.kernel.org/r/20230309165455.175131-3-mic@digikod.net --- tools/testing/selftests/landlock/fs_test.c | 26 +++++++++++++++++----- 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/landlock/fs_test.c b/tools/testing/selftests/landlock/fs_test.c index b6c4be3faf7a..0438651f61d2 100644 --- a/tools/testing/selftests/landlock/fs_test.c +++ b/tools/testing/selftests/landlock/fs_test.c @@ -231,6 +231,20 @@ static void cleanup_layout(struct __test_metadata *const _metadata) EXPECT_EQ(0, remove_path(TMP_DIR)); }

+/* clang-format off */ +FIXTURE(layout0) {}; +/* clang-format on */ + +FIXTURE_SETUP(layout0) +{ + prepare_layout(_metadata); +} + +FIXTURE_TEARDOWN(layout0) +{ + cleanup_layout(_metadata); +} + static void create_layout1(struct __test_metadata *const _metadata) { create_file(_metadata, file1_s1d1); @@ -510,7 +524,7 @@ TEST_F_FORK(layout1, file_and_dir_access_rights) ASSERT_EQ(0, close(ruleset_fd)); }

-TEST_F_FORK(layout1, unknown_access_rights) +TEST_F_FORK(layout0, unknown_access_rights) { __u64 access_mask;

@@ -608,7 +622,7 @@ static void enforce_ruleset(struct __test_metadata *const _metadata, } }

-TEST_F_FORK(layout1, proc_nsfs) +TEST_F_FORK(layout0, proc_nsfs) { const struct rule rules[] = { { @@ -657,11 +671,11 @@ TEST_F_FORK(layout1, proc_nsfs) ASSERT_EQ(0, close(path_beneath.parent_fd)); }

-TEST_F_FORK(layout1, unpriv) +TEST_F_FORK(layout0, unpriv) { const struct rule rules[] = { { - .path = dir_s1d2, + .path = TMP_DIR, .access = ACCESS_RO, }, {}, @@ -1301,12 +1315,12 @@ TEST_F_FORK(layout1, inherit_superset) ASSERT_EQ(0, test_open(file1_s1d3, O_RDONLY)); }

-TEST_F_FORK(layout1, max_layers) +TEST_F_FORK(layout0, max_layers) { int i, err; const struct rule rules[] = { { - .path = dir_s1d2, + .path = TMP_DIR, .access = ACCESS_RO, }, {},