3 * pidwait.c -- wait for child to exit
7 * This code is Copyright (c) 2002, by the authors of nmh. See the
8 * COPYRIGHT file in the root directory of the nmh distribution for
9 * complete copyright information.
13 #include <h/signals.h>
17 #ifdef HAVE_SYS_WAIT_H
18 # include <sys/wait.h>
22 pidwait (pid_t id, int sigsok)
25 SIGNAL_HANDLER istat, qstat;
34 /* ignore a couple of signals */
35 istat = SIGNAL (SIGINT, SIG_IGN);
36 qstat = SIGNAL (SIGQUIT, SIG_IGN);
40 while ((pid = waitpid(id, &status, 0)) == -1 && errno == EINTR)
43 while ((pid = wait(&status)) != -1 && pid != id)
48 /* reset the signal handlers */
49 SIGNAL (SIGINT, istat);
50 SIGNAL (SIGQUIT, qstat);
54 return (pid == -1 ? -1 : status);
56 return (pid == -1 ? -1 : status.w_status);