/* $NetBSD: t_proc1.c,v 1.3 2017/01/13 21:30:41 christos Exp $ */

/*-
* Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn and Jaromir Dolecek.
*
* 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>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_proc1.c,v 1.3 2017/01/13 21:30:41 christos Exp $");

/*
* this also used to trigger problem fixed in
* rev. 1.1.1.1.2.13 of sys/kern/kern_event.c
*/

#include <sys/param.h>
#include <sys/event.h>
#include <sys/wait.h>

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

#include <atf-c.h>

#include "h_macros.h"

static int
child(void)
{
       pid_t ch;
       int status;
       char *argv[] = { NULL, NULL };
       char *envp[] = { NULL, NULL };

       if ((argv[0] = strdup("true")) == NULL)
               err(EXIT_FAILURE, "strdup(\"true\")");

       if ((envp[0] = strdup("FOO=BAZ")) == NULL)
               err(EXIT_FAILURE, "strdup(\"FOO=BAZ\")");

       /* Ensure parent is ready */
       (void)sleep(2);

       /* Do fork */
       switch (ch = fork()) {
       case -1:
               return EXIT_FAILURE;
               /* NOTREACHED */
       case 0:
               return EXIT_SUCCESS;
               /* NOTREACHED */
       default:
               wait(&status);
               break;
       }

       /* Exec */
       execve("/usr/bin/true", argv, envp);

       /* NOTREACHED */
       return EXIT_FAILURE;
}

ATF_TC(proc1);
ATF_TC_HEAD(proc1, tc)
{
       atf_tc_set_md_var(tc, "descr", "Checks EVFILT_PROC");
}
ATF_TC_BODY(proc1, tc)
{
       struct kevent event[1];
       pid_t pid;
       int kq, status;
       u_int want;

       RL(kq = kqueue());

       /* fork a child for doing the events */
       RL(pid = fork());
       if (pid == 0) {
               _exit(child());
               /* NOTREACHED */
       }

       (void)sleep(1); /* give child some time to come up */

       event[0].ident = (uintptr_t)pid;
       event[0].filter = EVFILT_PROC;
       event[0].flags = EV_ADD | EV_ENABLE;
       event[0].fflags = NOTE_EXIT | NOTE_FORK | NOTE_EXEC; /* | NOTE_TRACK;*/
       want = NOTE_EXIT | NOTE_FORK | NOTE_EXEC;

       RL(kevent(kq, event, 1, NULL, 0, NULL));

       /* wait until we get all events we want */
       while (want) {
               RL(kevent(kq, NULL, 0, event, 1, NULL));
               printf("%ld:", (long)event[0].ident);

               if (event[0].fflags & NOTE_EXIT) {
                       want &= ~NOTE_EXIT;
                       printf(" NOTE_EXIT");
               }
               if (event[0].fflags & NOTE_EXEC) {
                       want &= ~NOTE_EXEC;
                       printf(" NOTE_EXEC");
               }
               if (event[0].fflags & NOTE_FORK) {
                       want &= ~NOTE_FORK;
                       printf(" NOTE_FORK");
               }
               if (event[0].fflags & NOTE_CHILD)
                       printf(" NOTE_CHILD, parent = %" PRId64, event[0].data);

               printf("\n");
       }

       (void)waitpid(pid, &status, 0);
}

ATF_TP_ADD_TCS(tp)
{
       ATF_TP_ADD_TC(tp, proc1);

       return atf_no_error();
}