3 * pidwait.c -- wait for child to exit
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
11 #include <h/signals.h>
17 pidwait (pid_t id, int sigsok)
20 SIGNAL_HANDLER istat = NULL, qstat = NULL;
25 /* ignore a couple of signals */
26 istat = SIGNAL (SIGINT, SIG_IGN);
27 qstat = SIGNAL (SIGQUIT, SIG_IGN);
30 while ((pid = waitpid(id, &status, 0)) == -1 && errno == EINTR)
34 /* reset the signal handlers */
35 SIGNAL (SIGINT, istat);
36 SIGNAL (SIGQUIT, qstat);
39 return (pid == -1 ? -1 : status);