On Thu, 5 Apr 2018 07:07:06 -0400 (EDT), Wietse Venema stated:
>Bastian Blank:
>> On Wed, Apr 04, 2018 at 08:56:46PM -0400, Wietse Venema wrote:
>> > That may be so, but why does the lame Linux kernel silently ignore
>> > the kill() call instead of properly returning an error.
>>
>> The signal is ignored the same way as if someone had called
>> | signal(SIGFOO, SIG_IGN)
>
>Postfix code is (while handling SIGTERM)
>
> sigemptyset(&action.sa_mask);
> action.sa_flags = 0;
> action.sa_handler = SIG_DFL;
> if (sigaction(sig, &action, (struct sigaction *) 0) < 0)
> msg_fatal("%s: sigaction: %m", myname);
> if (kill(pid, sig) < 0)
> msg_fatal("%s: kill myself: %m", myname);
>
>So Linux also ignores sigaction with SIG_DFL without returning an
>error. Undocumented behavior -> Lame.
>
> Wietse
Well, you could file a bug report; however, they would just ignore it.
--
Jerry
