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selftests: filesystems: fix warn_unused_result build warnings

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Fix the following warnings by adding return check and error messages.

statmount_test.c: In function ‘cleanup_namespace’:
statmount_test.c:128:9: warning: ignoring return value of ‘fchdir’
declared with attribute ‘warn_unused_result’ [-Wunused-result]
  128 |         fchdir(orig_root);
      |         ^~~~~~~~~~~~~~~~~
statmount_test.c:129:9: warning: ignoring return value of ‘chroot’
declared with attribute ‘warn_unused_result’ [-Wunused-result]
  129 |         chroot(".");
      |         ^~~~~~~~~~~

Signed-off-by: Amer Al Shanawany <amer.shanawany@gmail.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Amer Al Shanawany 2024-04-17 20:49:13 +02:00 committed by Shuah Khan
parent 4bf15b1c65
commit 2049aad5d3
1 changed files with 10 additions and 2 deletions
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12
tools/testing/selftests/filesystems/statmount/statmount_test.c
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@ -125,8 +125,16 @@ 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_perror("fchdir to original root");
ret = chroot(".");
if (ret == -1)
ksft_perror("chroot to original root");
umount2(root_mntpoint, MNT_DETACH);
rmdir(root_mntpoint);
}