2 ** pidwait.c -- wait for child to exit
4 ** This code is Copyright (c) 2002, by the authors of nmh. See the
5 ** COPYRIGHT file in the root directory of the nmh distribution for
6 ** complete copyright information.
10 #include <h/signals.h>
16 pidwait(pid_t id, int sigsok)
19 SIGNAL_HANDLER istat = NULL, qstat = NULL;
23 /* ignore a couple of signals */
24 istat = SIGNAL(SIGINT, SIG_IGN);
25 qstat = SIGNAL(SIGQUIT, SIG_IGN);
28 while ((pid = waitpid(id, &status, 0)) == -1 && errno == EINTR)
32 /* reset the signal handlers */
33 SIGNAL(SIGINT, istat);
34 SIGNAL(SIGQUIT, qstat);
37 return (pid == -1 ? -1 : status);