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ash: open-code blocking_dowait_with_raise_on_sig()

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There is in fact only one callsite.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-10-27 20:18:18 +02:00
parent b543bdadb3
commit 6918811014
1 changed files with 7 additions and 18 deletions
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25
shell/ash.c
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@ -4032,15 +4032,6 @@ dowait(int block, struct job *job)
return pid;
}
static int
blocking_dowait_with_raise_on_sig(void)
{
pid_t pid = dowait(DOWAIT_BLOCK, NULL);
if (pid <= 0 && pending_sig)
raise_exception(EXSIG);
return pid;
}
#if JOBS
static void
showjob(struct job *jp, int mode)
@ -4229,19 +4220,14 @@ waitcmd(int argc UNUSED_PARAM, char **argv)
jp->waited = 1;
jp = jp->prev_job;
}
blocking_dowait_with_raise_on_sig();
dowait(DOWAIT_BLOCK, NULL);
/* man bash:
* "When bash is waiting for an asynchronous command via
* the wait builtin, the reception of a signal for which a trap
* has been set will cause the wait builtin to return immediately
* with an exit status greater than 128, immediately after which
* the trap is executed."
*
* blocking_dowait_with_raise_on_sig raises signal handlers
* if it gets no pid (pid < 0). However,
* if child sends us a signal *and immediately exits*,
* blocking_dowait_with_raise_on_sig gets pid > 0
* and does not handle pending_sig. Check this case: */
*/
if (pending_sig)
raise_exception(EXSIG);
}
@ -4263,8 +4249,11 @@ waitcmd(int argc UNUSED_PARAM, char **argv)
job = getjob(*argv, 0);
}
/* loop until process terminated or stopped */
while (job->state == JOBRUNNING)
blocking_dowait_with_raise_on_sig();
while (job->state == JOBRUNNING) {
pid_t pid = dowait(DOWAIT_BLOCK, NULL);
if (pid <= 0 && pending_sig)
raise_exception(EXSIG);
}
job->waited = 1;
retval = getstatus(job);
repeat: ;