linux-kernel - Re: [PATCH next 3/3] selftests:connector: Add root check and fix arg error paths to skip

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Message-ID: <ec809279-cc41-7e0f-a567-29400b4c34a9@linuxfoundation.org>
Date:   Fri, 28 Jul 2023 13:44:21 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Anjali Kulkarni <anjali.k.kulkarni@...cle.com>
Cc:     Shuah Khan <shuah@...nel.org>,
        Liam Howlett <liam.howlett@...cle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH next 3/3] selftests:connector: Add root check and fix arg
 error paths to skip

On 7/28/23 13:06, Shuah Khan wrote:
> On 7/28/23 12:10, Anjali Kulkarni wrote:
>>
>>
>>> On Jul 28, 2023, at 10:29 AM, Shuah Khan <skhan@...uxfoundation.org> wrote:
>>>
>>> proc_filter test requires root privileges. Add root privilege check
>>> and skip the test. Also fix argument parsing paths to skip in their
>>> error legs.
>>>
>>> Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
>>> ---
>>> tools/testing/selftests/connector/proc_filter.c | 9 +++++++--
>>> 1 file changed, 7 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/tools/testing/selftests/connector/proc_filter.c b/tools/testing/selftests/connector/proc_filter.c
>>> index 4fe8c6763fd8..7b2081b98e5c 100644
>>> --- a/tools/testing/selftests/connector/proc_filter.c
>>> +++ b/tools/testing/selftests/connector/proc_filter.c
>>> @@ -248,7 +248,7 @@ int main(int argc, char *argv[])
>>>
>>>     if (argc > 2) {
>>>         printf("Expected 0(assume no-filter) or 1 argument(-f)\n");
>>> -        exit(1);
>>> +        exit(KSFT_SKIP);
>>>     }
>>>
>>>     if (argc == 2) {
>>> @@ -256,10 +256,15 @@ int main(int argc, char *argv[])
>>>             filter = 1;
>>>         } else {
>>>             printf("Valid option : -f (for filter feature)\n");
>>> -            exit(1);
>>> +            exit(KSFT_SKIP);
>>>         }
>>>     }
>>>
>>> +    if (geteuid()) {
>>> +        printf("Connector test requires root privileges.\n");
>>> +        exit(KSFT_SKIP);
>>> +    }
>>> +
>>
>> I am not sure why you have added this check? proc_filter does not need root privilege to run.
>>
> 
> It failed for me when I ran it saying it requires root privileges.
> I had to run it as root.
> 

The following is what I see when I run the test as non-root
user:

bind failed: Operation not permitted

thanks,
-- Shuah