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BSD 4.3reno

/* pidwait.c - wait for child to exit */

#include "../h/mh.h"
#include <signal.h>
#include <stdio.h>
#if defined(POSIX) || defined(BSD42)
#include <sys/wait.h>
#endif	POSIX or BSD42


pidwait(id, sigsok)
	register int id, sigsok;
{
    register int    pid;
    SIGDECL (*hstat)(), (*istat)(), (*qstat)(), (*tstat)();
#ifndef	BSD42
    int     status;
#else	BSD42
    union wait status;
#endif	BSD42

    if (sigsok == NOTOK) {
	hstat = signal (SIGHUP, SIG_IGN);
	istat = signal (SIGINT, SIG_IGN);
	qstat = signal (SIGQUIT, SIG_IGN);
	tstat = signal (SIGTERM, SIG_IGN);
    }

#ifdef POSIX
    pid = waitpid(id, &status, 0);
#else
    while ((pid = wait (&status)) != NOTOK && pid != id)
	continue;
#endif

    if (sigsok == NOTOK) {
	(void) signal (SIGHUP, hstat);
	(void) signal (SIGINT, istat);
	(void) signal (SIGQUIT, qstat);
	(void) signal (SIGTERM, tstat);
    }

#if defined(POSIX) || !defined(BSD42)
    return (pid == NOTOK ? NOTOK : status);
#else
    return (pid == NOTOK ? NOTOK : status.w_status);
#endif
}

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