Re: [LTP] [PATCH] fix "sched_getparam/6-1" and "sched_getscheduler/7-1" tests

[Bian Naimeng <biannm@cn.fujitsu.com>]

Garrett Cooper wrote:
> On Mon, Jan 24, 2011 at 1:58 AM, Bian Naimeng <biannm@cn.fujitsu.com> wrote:
>>
>> Mitani wrote:
>>> Hi,
>>>
>>>
>>> Following POSIX testsets failed:
>>> ------------
>>> conformance/interfaces/sched_getparam/6-1: execution: FAILED: Output:
>>> Testing with user 'bin' (euid: 1)(uid: 1)
>>> The function sched_getparam has successed.
>>> ------------
>>>
>>> ------------
>>> conformance/interfaces/sched_getscheduler/7-1: execution: FAILED: Output:
>>> Testing with user 'bin' (uid: 1)
>>> The function sched_getscheduler has successed.
>>> ------------
>>>
>>> The environments are as follows:
>>>   - RHEL4.8 --- (x86, x86_64, ia64)
>>>   - kernel  --- kernel-2.6.9-89.EL
>>>   - glibc   --- glibc-2.3.4-2.43
>>>
>>>   - RHEL5.5 --- (x86, x86_64, ia64)
>>>   - kernel  --- kernel-2.6.18-194.el5
>>>   - glibc   --- glibc-2.5-49
>>>
>>>
>>> They are permission tests.
>>>
>>> The comment of "sched_getparam/6-1" testset source is as follows:
>>> ------------
>>>   * On Linux, e.g, the kernel makes no check on user permission to call this
>>>   * API. So basically we don't know on what condition a system should return
>>>   * EPERM. It is implementation defined.
>>> ------------
>>>
>> Hi Garrett,
>>
>>  I think it's better to report UNRESOLVED, whatever the os is.
> 
>     It's not implementation defined according to 2008.1, and it's flat
> out a requirement failure (not UNRESOLVED):
> 
> The sched_getparam() function shall fail if:
> 
> [EPERM]
>     The requesting process does not have permission to obtain the
> scheduling parameters of the specified process.
> 
> `shall' -> `must' in POSIX terms.

Thanks very much for telling me this information.

But the spec does not point out the what condition a process does not
have permission to do it.

> 
>     The test is incorrect because it fails to setgid the group to the
> non-root user's group.

Ditto.

The POSIX spec does not point out non-root user(non-root group too) does not
have permission to obtain the scheduling parameters of the init process.

Maybe i miss something. If so, please tell me, thanks very much.

Thanks
 Bian

> Thanks,
> -Garrett
> 
> 

-- 
Regards
Bian Naimeng


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