[LTP] [PATCH 3/3] syscalls/semctl01: Convert into new api

[xuyang2018.jy@fujitsu.com <xuyang2018.jy@fujitsu.com>]

Hi Cyril
> Hi!
>>>> To ensure ftok succeed, we must require root. Or, modify GETIPCKEY api,
>>>> we can use tmp directory. Anyhow, I will send a v2 to remove useless
>>>> funtion declartion firstly.
>>>
>>> Unless we are sharing the semaphore with a process that wasn't worked
>>> from the test process we can also pass IPC_PRIVATE instead of the key.
>>
>> My ltp working directory is /root/ltp, then run "su xuyang" to run
>> semctl01 case under /root/ltp/testcases/kernel/syscalls/ipc/semctl, then
>> I got ftok failure as below:
>>
>> [xuyang@localhost semctl]$ ./semctl01
>> tst_test.c:1289: TINFO: Timeout per run is 0h 05m 00s
>> libnewipc.c:44: TBROK: ftok() failed at semctl01.c:308: EACCES (13)
>>
>> I guess this situation maybe meaningless(Usually, user has access
>> privilege for their ltp directory or install directory ). So needs_root
>> is useless.
>>
>> I guess maintainers can remove this directly instead of sending a v3.
>
> The point I was trying to make is that you can pass IPC_PRIVATE instead
> of the key to semget() and you don't have to use ftok() at all.
Now, I see. Thanks. Will send a v3.
>