[PATCH v5 2/4] selftests/landlock: Selftests for file truncation support

[Konstantin Meskhidze (A)]

8/19/2022 11:36 AM, Mickaël Salaün пишет:
> FYI, my -next branch is here:
> https://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git/log/?h=next
> 
> Günther, let me know if everything is OK.
> 
> Konstantin, please rebase your work on it. It should mainly conflict
> with changes related to the Landlock ABI version.

   Ok. I will rebase. Thnaks. Do I need to keep my next versions on your 
-next branch?
> 
> 
> On 19/08/2022 10:15, Mickaël Salaün wrote:
>> Ok, it should be in -next soon. Thanks for your contribution!
>> 
>> Would you like to write a syzkaller test to cover this new access right?
>> You only need to update the landlock_fs_accesses file with a call to
>> truncate() returning EACCES and check that it covers
>> hook_path_truncate(). You can take inspiration from this PR:
>> https://github.com/google/syzkaller/pull/3133
>> Please CC me, I can help.
>> 
>> Regards,
>>    Mickaël
>> 
>> 
>> On 19/08/2022 07:24, Günther Noack wrote:
>>> On Thu, Aug 18, 2022 at 10:39:27PM +0200, Mickaël Salaün wrote:
>>>> On 17/08/2022 22:30, Günther Noack wrote:
>>>>> +/*
>>>>> + * Invokes creat(2) and returns its errno or 0.
>>>>> + * Closes the opened file descriptor on success.
>>>>> + */
>>>>> +static int test_creat(const char *const path, mode_t mode)
>>>>
>>>> This "mode" argument is always 0600. If it's OK with you, I hard code this
>>>> mode and push this series to -next with some small cosmetic fixes.
>>>
>>> Yes, absolutely. Please do these fixes and push it to -next. :)
>>>
>>> Thanks,
>>> —Günther
>>>
>>> --
> .