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tst-process_madvise: Check process_madvise-syscall support.

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So far this test checks if pidfd_open-syscall is supported,
which was introduced with linux 5.3.

The process_madvise-syscall was introduced with linux 5.10.
Thus you'll get FAILs if you are running a kernel in between.

This patch adds a check if the first process_madvise-syscall
returns ENOSYS and in this case will fail with UNSUPPORTED.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
Stefan Liebler 2022-08-11 09:47:46 +02:00
parent 61d2066c19
commit 11f09947f3
1 changed files with 5 additions and 2 deletions
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7
sysdeps/unix/sysv/linux/tst-process_madvise.c
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@ -101,8 +101,11 @@ do_test (void)
/* We expect this to succeed in the target process because the mapping
is valid. */
TEST_COMPARE (process_madvise (pidfd, &iv, 1, MADV_COLD, 0),
2 * page_size);
ssize_t ret = process_madvise (pidfd, &iv, 1, MADV_COLD, 0);
if (ret == -1 && errno == ENOSYS)
FAIL_UNSUPPORTED ("kernel does not support process_madvise, skipping"
"test");
TEST_COMPARE (ret, 2 * page_size);
}
{