Home | History | Annotate | Line # | Download | only in kqueue
t_proc1.c revision 1.1.2.2 
      1 /* $NetBSD: t_proc1.c,v 1.1.2.2 2009/05/13 19:19:33 jym Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Luke Mewburn and Jaromir Dolecek.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __COPYRIGHT("@(#) Copyright (c) 2008\
     34  The NetBSD Foundation, inc. All rights reserved.");
     35 __RCSID("$NetBSD: t_proc1.c,v 1.1.2.2 2009/05/13 19:19:33 jym Exp $");
     36 
     37 /*
     38  * this also used to trigger problem fixed in
     39  * rev. 1.1.1.1.2.13 of sys/kern/kern_event.c
     40  */
     41 
     42 #include <sys/param.h>
     43 #include <sys/event.h>
     44 #include <sys/wait.h>
     45 
     46 #include <err.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 #include <unistd.h>
     50 #include <inttypes.h>
     51 
     52 #include <atf-c.h>
     53 
     54 #include "../../h_macros.h"
     55 
     56 static int
     57 child(void)
     58 {
     59 	pid_t ch;
     60 	int status;
     61 	char *argv[] = { NULL, NULL };
     62 	char *envp[] = { NULL, NULL };
     63 
     64 	if ((argv[0] = strdup("true")) == NULL)
     65 		err(EXIT_FAILURE, "strdup(\"true\")");
     66 
     67 	if ((envp[0] = strdup("FOO=BAZ")) == NULL)
     68 		err(EXIT_FAILURE, "strdup(\"FOO=BAZ\")");
     69 
     70 	/* Ensure parent is ready */
     71 	(void)sleep(2);
     72 
     73 	/* Do fork */
     74 	switch (ch = fork()) {
     75 	case -1:
     76 		return EXIT_FAILURE;
     77 		/* NOTREACHED */
     78 	case 0:
     79 		return EXIT_SUCCESS;
     80 		/* NOTREACHED */
     81 	default:
     82 		wait(&status);
     83 		break;
     84 	}
     85 
     86 	/* Exec */
     87 	execve("/usr/bin/true", argv, envp);
     88 
     89 	/* NOTREACHED */
     90 	return EXIT_FAILURE;
     91 }
     92 
     93 ATF_TC(proc1);
     94 ATF_TC_HEAD(proc1, tc)
     95 {
     96 	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_PROC");
     97 }
     98 ATF_TC_BODY(proc1, tc)
     99 {
    100 	struct kevent event[1];
    101 	pid_t pid;
    102 	int kq, want, status;
    103 
    104 	RL(kq = kqueue());
    105 
    106 	/* fork a child for doing the events */
    107 	RL(pid = fork());
    108 	if (pid == 0) {
    109 		_exit(child());
    110 		/* NOTREACHED */
    111 	}
    112 
    113 	(void)sleep(1); /* give child some time to come up */
    114 
    115 	event[0].ident = pid;
    116 	event[0].filter = EVFILT_PROC;
    117 	event[0].flags = EV_ADD | EV_ENABLE;
    118 	event[0].fflags = NOTE_EXIT | NOTE_FORK | NOTE_EXEC; /* | NOTE_TRACK;*/
    119 	want = NOTE_EXIT | NOTE_FORK | NOTE_EXEC;
    120 
    121 	RL(kevent(kq, event, 1, NULL, 0, NULL));
    122 
    123 	/* wait until we get all events we want */
    124 	while (want) {
    125 		RL(kevent(kq, NULL, 0, event, 1, NULL));
    126 		printf("%ld:", (long)event[0].ident);
    127 
    128 		if (event[0].fflags & NOTE_EXIT) {
    129 			want &= ~NOTE_EXIT;
    130 			printf(" NOTE_EXIT");
    131 		}
    132 		if (event[0].fflags & NOTE_EXEC) {
    133 			want &= ~NOTE_EXEC;
    134 			printf(" NOTE_EXEC");
    135 		}
    136 		if (event[0].fflags & NOTE_FORK) {
    137 			want &= ~NOTE_FORK;
    138 			printf(" NOTE_FORK");
    139 		}
    140 		if (event[0].fflags & NOTE_CHILD)
    141 			printf(" NOTE_CHILD, parent = %" PRId64, event[0].data);
    142 
    143 		printf("\n");
    144 	}
    145 
    146 	(void)waitpid(pid, &status, 0);
    147 }
    148 
    149 ATF_TP_ADD_TCS(tp)
    150 {
    151 	ATF_TP_ADD_TC(tp, proc1);
    152 
    153 	return atf_no_error();
    154 }
    155