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* [glibc] tst-process_madvise: Check process_madvise-syscall support.
@ 2022-08-11 10:23 Stefan Liebler
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From: Stefan Liebler @ 2022-08-11 10:23 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=11f09947f3066f5ff84fd15ef22b72b46eea97a8
commit 11f09947f3066f5ff84fd15ef22b72b46eea97a8
Author: Stefan Liebler <stli@linux.ibm.com>
Date: Thu Aug 11 09:47:46 2022 +0200
tst-process_madvise: Check process_madvise-syscall support.
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>
Diff:
---
sysdeps/unix/sysv/linux/tst-process_madvise.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/tst-process_madvise.c b/sysdeps/unix/sysv/linux/tst-process_madvise.c
index a674e80b76..3b032ddefc 100644
--- a/sysdeps/unix/sysv/linux/tst-process_madvise.c
+++ b/sysdeps/unix/sysv/linux/tst-process_madvise.c
@@ -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);
}
{
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