t_proc1.c revision 314817 
1/* $NetBSD: t_proc1.c,v 1.3 2017/01/13 21:30:41 christos 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 1.3 2017/01/13 21:30:41 christos 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
56static int
57child(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
93ATF_TC(proc1);
94ATF_TC_HEAD(proc1, tc)
95{
96	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_PROC");
97}
98ATF_TC_BODY(proc1, tc)
99{
100	struct kevent event[1];
101	pid_t pid;
102	int kq, status;
103	u_int want;
104
105	RL(kq = kqueue());
106
107	/* fork a child for doing the events */
108	RL(pid = fork());
109	if (pid == 0) {
110		_exit(child());
111		/* NOTREACHED */
112	}
113
114	(void)sleep(1); /* give child some time to come up */
115
116	event[0].ident = (uintptr_t)pid;
117	event[0].filter = EVFILT_PROC;
118	event[0].flags = EV_ADD | EV_ENABLE;
119	event[0].fflags = NOTE_EXIT | NOTE_FORK | NOTE_EXEC; /* | NOTE_TRACK;*/
120	want = NOTE_EXIT | NOTE_FORK | NOTE_EXEC;
121
122	RL(kevent(kq, event, 1, NULL, 0, NULL));
123
124	/* wait until we get all events we want */
125	while (want) {
126		RL(kevent(kq, NULL, 0, event, 1, NULL));
127		printf("%ld:", (long)event[0].ident);
128
129		if (event[0].fflags & NOTE_EXIT) {
130			want &= ~NOTE_EXIT;
131			printf(" NOTE_EXIT");
132		}
133		if (event[0].fflags & NOTE_EXEC) {
134			want &= ~NOTE_EXEC;
135			printf(" NOTE_EXEC");
136		}
137		if (event[0].fflags & NOTE_FORK) {
138			want &= ~NOTE_FORK;
139			printf(" NOTE_FORK");
140		}
141		if (event[0].fflags & NOTE_CHILD)
142#ifdef __FreeBSD__
143			printf(" NOTE_CHILD, parent = %" PRIdPTR, event[0].data);
144#else
145			printf(" NOTE_CHILD, parent = %" PRId64, event[0].data);
146#endif
147
148		printf("\n");
149	}
150
151	(void)waitpid(pid, &status, 0);
152}
153
154ATF_TP_ADD_TCS(tp)
155{
156	ATF_TP_ADD_TC(tp, proc1);
157
158	return atf_no_error();
159}
160