Add inval_create_ruleset_arguments, extension of inval_create_ruleset_flags, to also check error ordering for landlock_create_ruleset(2). This is similar to the previous commit checking landlock_add_rule(2). Test coverage for security/landlock is 94.4% of 504 lines accorging to gcc/gcov-11. Signed-off-by: Mickaël Salaün <mic@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20220506160820.524344-11-mic@xxxxxxxxxxx --- Changes since v1: * New patch. --- tools/testing/selftests/landlock/base_test.c | 21 +++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/landlock/base_test.c b/tools/testing/selftests/landlock/base_test.c index 21fb33581419..35f64832b869 100644 --- a/tools/testing/selftests/landlock/base_test.c +++ b/tools/testing/selftests/landlock/base_test.c @@ -97,14 +97,17 @@ TEST(abi_version) ASSERT_EQ(EINVAL, errno); } -TEST(inval_create_ruleset_flags) +/* Tests ordering of syscall argument checks. */ +TEST(create_ruleset_checks_ordering) { const int last_flag = LANDLOCK_CREATE_RULESET_VERSION; const int invalid_flag = last_flag << 1; + int ruleset_fd; const struct landlock_ruleset_attr ruleset_attr = { .handled_access_fs = LANDLOCK_ACCESS_FS_READ_FILE, }; + /* Checks priority for invalid flags. */ ASSERT_EQ(-1, landlock_create_ruleset(NULL, 0, invalid_flag)); ASSERT_EQ(EINVAL, errno); @@ -119,6 +122,22 @@ TEST(inval_create_ruleset_flags) landlock_create_ruleset(&ruleset_attr, sizeof(ruleset_attr), invalid_flag)); ASSERT_EQ(EINVAL, errno); + + /* Checks too big ruleset_attr size. */ + ASSERT_EQ(-1, landlock_create_ruleset(&ruleset_attr, -1, 0)); + ASSERT_EQ(E2BIG, errno); + + /* Checks too small ruleset_attr size. */ + ASSERT_EQ(-1, landlock_create_ruleset(&ruleset_attr, 0, 0)); + ASSERT_EQ(EINVAL, errno); + ASSERT_EQ(-1, landlock_create_ruleset(&ruleset_attr, 1, 0)); + ASSERT_EQ(EINVAL, errno); + + /* Checks valid call. */ + ruleset_fd = + landlock_create_ruleset(&ruleset_attr, sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + ASSERT_EQ(0, close(ruleset_fd)); } /* Tests ordering of syscall argument checks. */ -- 2.35.1