Re: [LTP] [PATCH V2] ppoll01: add signal() syscall to register the signal handler

[Chandru <chandru@in.ibm.com>]

On Thursday 15 October 2009 06:55:29 Garrett Cooper wrote:
> Just curious -- was the issue seen at the following point in the code
> previously?
> 
> 361             TEST(sys_ret = syscall(__NR_ppoll, p_fds, nfds, p_ts,
> p_sigmask, sigsetsize)); /* <-- Blocks here indefinitely */
> 362             sys_errno = errno;
> 363             if (sys_ret <= 0 || tc->ret < 0)
> 364                     goto TEST_END;
> 365
> 366             cmp_ok = fds[0].revents == tc->expect_revents;
> 
> I've seen this issue 1 out of the 8 or 9 times I've run this test.

Nope, without the patch we only see case00 completing and the test exits while in the middle of case01

# ./ppoll01
ppoll01     0  TINFO  :  (case00) START
EXPECT: return value(ret)=(N >= 0) errno=0 (Success)
RESULT: return value(ret)=       1 errno=0 (Success)
ppoll01     0  TINFO  :  (case00) END => OK
ppoll01     0  TINFO  :  (case01) START
# 


With the patch we see the output as follows...

# ./ppoll01
ppoll01     0  TINFO  :  (case00) START
EXPECT: return value(ret)=(N >= 0) errno=0 (Success)
RESULT: return value(ret)=       1 errno=0 (Success)
ppoll01     0  TINFO  :  (case00) END => OK
ppoll01     0  TINFO  :  (case01) START
EXPECT: return value(ret)=(N >= 0) errno=0 (Success)
RESULT: return value(ret)=       0 errno=0 (Success)
ppoll01     0  TINFO  :  (case01) END => OK
ppoll01     0  TINFO  :  (case02) START
EXPECT: return value(ret)=(N >= 0) errno=0 (Success)
RESULT: return value(ret)=       0 errno=0 (Success)
ppoll01     0  TINFO  :  (case02) END => OK
ppoll01     0  TINFO  :  (case03) START
EXPECT: return value(ret)=(N >= 0) errno=0 (Success)
RESULT: return value(ret)=       1 errno=0 (Success)
ppoll01     0  TINFO  :  (case03) END => OK
ppoll01     0  TINFO  :  (case04) START
EXPECT: return value(ret)=-1 errno=4 (Interrupted system call)
RESULT: return value(ret)=-1 errno=4 (Interrupted system call)
ppoll01     0  TINFO  :  (case04) END => OK
ppoll01     0  TINFO  :  (case05) START
EXPECT: return value(ret)=-1 errno=4 (Interrupted system call)
RESULT: return value(ret)=-1 errno=4 (Interrupted system call)
ppoll01     0  TINFO  :  (case05) END => OK
ppoll01     0  TINFO  :  (case06) START
EXPECT: return value(ret)=-1 errno=22 (Invalid argument)
RESULT: return value(ret)=-1 errno=22 (Invalid argument)
ppoll01     0  TINFO  :  (case06) END => OK
ppoll01     0  TINFO  :  (case07) START
EXPECT: return value(ret)=-1 errno=14 (Bad address)
RESULT: return value(ret)=-1 errno=14 (Bad address)
ppoll01     0  TINFO  :  (case07) END => OK
ppoll01     1  TPASS  :  ppoll01 call succeeded

#




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