Current cgroup_dev test mostly tests that device operation is accepted or refused base on passed major/minor (and so, any operation performed during test involves only char device)
Add a small subtest ensuring that the device type passed to bpf program allows it to take decisions as well.
Signed-off-by: Alexis Lothoré (eBPF Foundation) alexis.lothore@bootlin.com --- tools/testing/selftests/bpf/prog_tests/cgroup_dev.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c b/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c index 5112b99213ad..f0b6e5d9604b 100644 --- a/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c +++ b/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c @@ -101,6 +101,9 @@ void test_cgroup_dev(void) if (test__start_subtest("allow-mknod")) test_mknod("/dev/test_dev_cgroup_null", S_IFCHR, 1, 3, 0);
+ if (test__start_subtest("deny-mknod-wrong-type")) + test_mknod("/dev/test_dev_cgroup_null_block", S_IFBLK, 1, 3, 1); + if (test__start_subtest("allow-read")) test_read("/dev/urandom", 0);