Hi,
running signal_test_01 IPC stress testcase in x86 and x86_64 machines, we faced
the messages below:
# cd ltp-full-20080430/testcases/kernel/ipc/ipc_stress/
# ./signal_test_01
./signal_test_01: IPC Signals TestSuite program
Send SIGILL, SIGALRM, SIGIOT signals to process
received signal: (SIGILL)
received signal: (SIGALRM)
received signal: (SIGIOT/SIGABRT)
Block SIGILL, SIGALRM, SIGIOT signals, and resend signals + others
received signal: (SIGFPE)
received signal: (SIGTERM)
received signal: (SIGINT)
Block rest of signals
Change signal mask & wait until signal interrupts process
ERROR [line: 266] sigpause failed: Invalid argument
: Invalid argument
The problems seems to be related to this piece of code:
/* Change the process signal mask:
*
* Now specifiy a new process signal mask to allow the SIGINT signal
* to interrupt the process. Thus by using sigpause (), force the
* process to suspend execution until delivery of an unblocked
* signal (SIGINT in this case).
*
* Additionally, verify that the SIGINT signal was received.
*/
valid_sig [SIGINT] = 1;
printf ("\n\tChange signal mask & wait until signal interrupts
process\n");
mask = 0xFFFF ^ SIGINT;
if (sigpause (mask) != -1 || errno != 4)
sys_error ("sigpause failed", __LINE__);
if (valid_sig [SIGINT])
error ("failed to receive SIGINT signal!", __LINE__);
`man sigpause` says there are 2 versions of this function: one considering a
signal as parameter (afaik, the default model) and another using a mask. In
this case, sigpause() uses this second version. I've already test it using
SIGINT as parameter and it seemed OK. I've also tried to force to sigpause() to
use a mask adding defines mentioned in manpage, without success.
In addiction, the manpage also advices to don't use this function and use
sigsuspend() instead. However, I'm not sure if substitute a focused system call
(like sigpause() in this case) is reasonable for LTP testsuits.
Would you please suggest what could be an acceptable solution for this issue?
Thanks in advance,
--
Edjunior
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