[LTP] clock_settime03 test fails on kernel-2.6.32

[Ramesh <rameshyr@linux.vnet.ibm.com>]

Hi All,

I am facing some issues with clock_settim03 test of timers group. 
clock_settime03 evaluates
the error condition of clock_settime systemcall. On my machine, TEST8 & 
TEST9 are failing as
the expeted error is not equal to the actual error.

After analysis, I found that the TEST8 & TEST9 are trying to
set CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID respectively.
But from the man pages, it says that
"According to POSIX.1-2001, the CLOCK_PROCESS_CPUTIME_ID and 
CLOCK_THREAD_CPUTIME_ID
  clocks should be settable using  clock_settime(). How-ever, the clocks 
currently are not settable".

Also, in the below code snippet of 
ltp/testcases/kernel/timers/clock_settime/clock_settime03.c
the if statement looks nothing for my kernel-2.6.32. So, the value of 
testcases[7] and testcases[8]
will get assigned to EFAULT but actually both of them should get set to 
EINVAL as the support is not
available on kernel-2.6.32.

-----------

         /* PROCESS_CPUTIME_ID & THREAD_CPUTIME_ID are not supported on
          * kernel versions lower than 2.6.12 and changed back in 2.6.38
          */
         if ((tst_kvercmp(2, 6, 12)) < 0 || (tst_kvercmp(2, 6, 38)) >= 0) {
                 testcases[7] = EINVAL;
                 testcases[8] = EINVAL;
         } else {
                 testcases[7] = EFAULT;
                 testcases[8] = EFAULT;
         }

------------

I would like to know from which version onwards the 
CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID
clocks can be set using clock_settime() so that I can generate a valid 
patch for this testcase.



Regards,
Ramesh


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