Re: [PATCH] selftests: filesystems: fix warn_unused_result build warnings

[Amer Al Shanawany]

On 4/19/24 18:41, Muhammad Usama Anjum wrote:
> On 4/17/24 11:49 PM, Amer Al Shanawany wrote:
>> 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@xxxxxxxxx>
> Reviewed-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
>
>> ---
>>  .../selftests/filesystems/statmount/statmount_test.c | 12 ++++++++++--
>>  1 file changed, 10 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..e8c019d72cbf 100644
>> --- a/tools/testing/selftests/filesystems/statmount/statmount_test.c
>> +++ b/tools/testing/selftests/filesystems/statmount/statmount_test.c
>> @@ -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);
>>  }
Hi,

Can you please consider this patch?

Thank  you

Amer