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Message-Id: <20240610200909.55819-1-jain.abhinav177@gmail.com>
Date: Mon, 10 Jun 2024 20:09:09 +0000
From: Abhinav Jain <jain.abhinav177@...il.com>
To: shuah@...nel.org,
brauner@...nel.org,
mszeredi@...hat.com,
linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: skhan@...uxfoundation.org,
javier.carrasco.cruz@...il.com,
jain.abhinav177@...il.com
Subject: [PATCH] selftests: filesystems: add return value checks
Add ksft_exit_fail_msg() return value checks for fchdir() & chroot()
to address the selftests statmount test compile warnings
statmount_test.c:127:2: warning: ignoring return value of ‘fchdir’,
declared with attribute warn_unused_result [-Wunused-result]
127 | fchdir(orig_root);
| ^~~~~~~~~~~~~~~~~
statmount_test.c:128:2: warning: ignoring return value of ‘chroot’,
declared with attribute warn_unused_result [-Wunused-result]
128 | chroot(".");
| ^~~~~~~~~~~
Signed-off-by: Abhinav Jain <jain.abhinav177@...il.com>
---
.../filesystems/statmount/statmount_test.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/filesystems/statmount/statmount_test.c b/tools/testing/selftests/filesystems/statmount/statmount_test.c
index e6d7c4f1c85b..b5e1247233b6 100644
--- a/tools/testing/selftests/filesystems/statmount/statmount_test.c
+++ b/tools/testing/selftests/filesystems/statmount/statmount_test.c
@@ -125,8 +125,17 @@ static uint32_t old_root_id, old_parent_id;
static void cleanup_namespace(void)
{
- fchdir(orig_root);
- chroot(".");
+ int ret;
+
+ ret = fchdir(orig_root);
+ if (ret == -1)
+ ksft_exit_fail_msg("changing current directory: %s\n",
+ strerror(errno));
+
+ ret = chroot(".");
+ if (ret == -1)
+ ksft_exit_fail_msg("chroot: %s\n", strerror(errno));
+
umount2(root_mntpoint, MNT_DETACH);
rmdir(root_mntpoint);
}
--
2.34.1
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