Unbreak the NOTE_TRACK event of EVFILT_PROC. When attaching to the child
process, proc_find can't be used as the child is still in state SIDL.


(joerg)

/* $NetBSD: t_proc3.c,v 1.1 2012/11/17 21:55:24 joerg Exp $ */

/*-
 * Copyright (c) 2012 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Joerg Sonnenberger.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__RCSID("$NetBSD: t_proc3.c,v 1.1 2012/11/17 21:55:24 joerg Exp $");

#include <sys/event.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>

#include <err.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <atf-c.h>

#include "../../h_macros.h"

ATF_TC(proc3);
ATF_TC_HEAD(proc3, tc)
{
	atf_tc_set_md_var(tc, "descr",
	    "Checks EVFILT_PROC for NOTE_TRACK on self bug ");
}

ATF_TC_BODY(proc3, tc)
{
	pid_t pid = 0;
	int kq, status;
	struct kevent ke;
	struct timespec timeout;

	RL(kq = kqueue());

	EV_SET(&ke, getpid(), EVFILT_PROC, EV_ADD, NOTE_TRACK, 0, 0);

	RL(kevent(kq, &ke, 1, NULL, 0, NULL));

	RL(pid = fork());
	if (pid == 0) {
		_exit(EXIT_SUCCESS);
		/* NOTREACHED */
	}

	RL(waitpid(pid, &status, 0));
	ATF_REQUIRE(WIFEXITED(status));
	ATF_REQUIRE_EQ(WEXITSTATUS(status), EXIT_SUCCESS);

	timeout.tv_sec = 0;
	timeout.tv_nsec = 0;
	ke.ident = 0;
	ke.fflags = 0;
	ke.flags = EV_ENABLE;

	RL(kevent(kq, NULL, 0, &ke, 1, &timeout));
	RL(close(kq));

	ATF_REQUIRE(ke.fflags & NOTE_CHILD);
	ATF_REQUIRE((ke.fflags & NOTE_TRACKERR) == 0);
	ATF_REQUIRE_EQ((pid_t)ke.ident, pid);
}

ATF_TP_ADD_TCS(tp)
{
	ATF_TP_ADD_TC(tp, proc3);

	return atf_no_error();
}