diff mbox series

[bpf-next,v4,3/3] selftests/bpf: add wrong type test to cgroup dev

Message ID 20240731-convert_dev_cgroup-v4-3-849425d90de6@bootlin.com (mailing list archive)
State Accepted
Commit 84cdbff4a93501b7199f0d2f1150961ee95c8582
Delegated to: BPF
Headers show
Series selftests/bpf: convert test_dev_cgroup to test_progs | expand

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netdev/series_format success Posting correctly formatted
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netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 7 this patch: 7
netdev/build_tools success Errors and warnings before: 10 this patch: 10
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netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
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netdev/source_inline success Was 0 now: 0

Commit Message

Alexis Lothoré July 31, 2024, 6:37 a.m. UTC 
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.

Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com>
---
Changes in v4:
- update parameters to test both ret and errno

Changes in v3:
- reorganize subtests order

Changes in v2:
- change test name ("null" block device does not make sense)
- use updated subtest API for this new subtest
---
 tools/testing/selftests/bpf/prog_tests/cgroup_dev.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c b/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c
index 8661e145ba84..5ab7547e38c0 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_dev.c
@@ -114,6 +114,10 @@  void test_cgroup_dev(void)
 	if (test__start_subtest("deny-write"))
 		test_write("/dev/zero", buf, TEST_BUFFER_SIZE, -1, EPERM);
 
+	if (test__start_subtest("deny-mknod-wrong-type"))
+		test_mknod("/dev/test_dev_cgroup_block", S_IFBLK, 1, 3, -1,
+			   EPERM);
+
 cleanup_progs:
 	dev_cgroup__destroy(skel);
 cleanup_cgroup: