linux-kernel - Re: [PATCH v2] selftests: prctl: Add new prctl test for PR_SET

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Message-ID: <ecf66ba7-6e63-5ee3-acce-b2da9327b76f@linuxfoundation.org>
Date:   Fri, 14 Jul 2023 10:21:20 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Osama Muhammad <osmtendev@...il.com>
Cc:     shuah@...nel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2] selftests: prctl: Add new prctl test for PR_SET_NAME

On 6/26/23 12:36, Osama Muhammad wrote:
> Hi Shuah,
> 
> Any feedback on this patch?.
> 
> Thanks,
> Osama
> 
> 

Please don't top post when you are responding on kernel
mailing lists. It gets very difficult to follow the
comments in the email thread.

> On Sat, 17 Jun 2023 at 18:01, Osama Muhammad <osmtendev@...il.com> wrote:
>>
>> Hi,
>>
>> Yes, I did install the latest kernel headers and TASK_COMM_LEN is not
>> accessible in userspace.
>>
>> I looked into the test which uses TASK_COMM_LEN but the test defines
>> it in its own header file.
>>
>> Example:  https://elixir.bootlin.com/linux/latest/source/tools/testing/selftests/bpf/progs/pyperf.h#L13

bfp test does things differently because its dependencies
on run-time environment.

>>
>> TASK_COMM_LEN is defined in include/linux/sched.h, but this header
>> file is not exposed to userspace.

Correct. you can include linux/sched.h like other tests do
Take a look at tools/testing/selftests/clone3

thanks,
-- Shuah