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Message-ID: <0910d537-c2e8-4932-8b0e-b5ce381e1ee1@gmail.com>
Date: Sat, 4 May 2024 19:17:08 +0200
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Subject: Re: [PATCH] selftests: filesystems: fix warn_unused_result build
 warnings
To: Muhammad Usama Anjum <usama.anjum@collabora.com>,
 Shuah Khan <shuah@kernel.org>, Christian Brauner <brauner@kernel.org>,
 Miklos Szeredi <mszeredi@redhat.com>, linux-kselftest@vger.kernel.org,
 linux-kernel@vger.kernel.org
Cc: Javier Carrasco <javier.carrasco.cruz@gmail.com>
References: <20240417184913.74734-1-amer.shanawany@gmail.com>
 <58e0539d-423e-42e0-9ee4-8fc8e1eed94f@collabora.com>
Content-Language: en-US
From: Amer Al Shanawany <amer.shanawany@gmail.com>
In-Reply-To: <58e0539d-423e-42e0-9ee4-8fc8e1eed94f@collabora.com>
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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@gmail.com>
> Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
>
>> ---
>>  .../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