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/* $OpenBSD: kqueue-fork.c,v 1.2 2003/07/31 21:48:08 deraadt Exp $ */
/*
* Written by Artur Grabowski <art@openbsd.org> 2002 Public Domain
*/
#include <stdlib.h>
#include <stdio.h>
#include <err.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/wait.h>
int check_inheritance(void);
int
check_inheritance(void)
{
int kq, status;
if ((kq = kqueue()) < 0) {
warn("kqueue");
return (1);
}
/*
* Check if the kqueue is properly closed on fork().
*/
switch (fork()) {
case -1:
err(1, "fork");
case 0:
if (close(kq) < 0)
_exit(0);
warnx("fork didn't close kqueue");
_exit(1);
}
if (wait(&status) < 0)
err(1, "wait");
if (!WIFEXITED(status))
errx(1, "child didn't exit?");
close(kq);
return (WEXITSTATUS(status) != 0);
}
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