[PATCH v3 2/5] selftests/mseal: add sealed madvise type

[jeffxu]

From: Jeff Xu <jef...@chromium.org>

Add a testcase to cover all sealed madvise type.

Signed-off-by: Jeff Xu <jef...@chromium.org>
---
 tools/testing/selftests/mm/mseal_test.c | 30 ++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/mseal_test.c 
b/tools/testing/selftests/mm/mseal_test.c
index 7198f2314f9b..6d77dc9b5442 100644
--- a/tools/testing/selftests/mm/mseal_test.c
+++ b/tools/testing/selftests/mm/mseal_test.c
@@ -2121,6 +2121,32 @@ static void test_seal_madvise_nodiscard(bool seal)
        REPORT_TEST_PASS();
 }
 
+static void test_seal_discard_madvise_advice(void)
+{
+       void *ptr;
+       unsigned long page_size = getpagesize();
+       unsigned long size = 4 * page_size;
+       int ret;
+       int sealed_advice[] = {MADV_FREE, MADV_DONTNEED,
+               MADV_DONTNEED_LOCKED, MADV_REMOVE,
+               MADV_DONTFORK, MADV_WIPEONFORK};
+       int size_sealed_advice = sizeof(sealed_advice) / sizeof(int);
+
+       setup_single_address(size, &ptr);
+       FAIL_TEST_IF_FALSE(ptr != (void *)-1);
+
+       ret = seal_single_address(ptr, size);
+       FAIL_TEST_IF_FALSE(!ret);
+
+       for (int i = 0; i < size_sealed_advice; i++) {
+               ret = sys_madvise(ptr, size, sealed_advice[i]);
+               FAIL_TEST_IF_FALSE(ret < 0);
+               FAIL_TEST_IF_FALSE(errno == EPERM);
+       }
+
+       REPORT_TEST_PASS();
+}
+
 int main(int argc, char **argv)
 {
        bool test_seal = seal_support();
@@ -2142,7 +2168,7 @@ int main(int argc, char **argv)
        if (!get_vma_size_supported())
                ksft_exit_skip("get_vma_size not supported\n");
 
-       ksft_set_plan(88);
+       ksft_set_plan(89);
 
        test_seal_addseal();
        test_seal_unmapped_start();
@@ -2251,5 +2277,7 @@ int main(int argc, char **argv)
        test_seal_discard_ro_anon_on_pkey(false);
        test_seal_discard_ro_anon_on_pkey(true);
 
+       test_seal_discard_madvise_advice();
+
        ksft_finished();
 }
-- 
2.46.0.469.g59c65b2a67-goog