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subd: if a required daemon exits, wait instead of killing it.

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Otherwise we always say it died because we killed it, so we don't get
the exit status.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2017-12-11 13:23:28 +10:30
parent 36746bf65a
commit b83ac58a98
1 changed files with 7 additions and 2 deletions
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9
lightningd/subd.c
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@ -523,8 +523,13 @@ static void destroy_subd(struct subd *sd)
switch (waitpid(sd->pid, &status, WNOHANG)) {
case 0:
log_debug(sd->log, "Status closed, but not exited. Killing");
kill(sd->pid, SIGKILL);
/* If it's an essential daemon, don't kill: we want the
* exit status */
if (!sd->must_not_exit) {
log_debug(sd->log,
"Status closed, but not exited. Killing");
kill(sd->pid, SIGKILL);
}
waitpid(sd->pid, &status, 0);
fail_if_subd_fails = false;
break;