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 
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, 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 			printf(" NOTE_CHILD, parent = %" PRId64, event[0].data);
143 
144 		printf("\n");
145 	}
146 
147 	(void)waitpid(pid, &status, 0);
148 }
149 
150 ATF_TP_ADD_TCS(tp)
151 {
152 	ATF_TP_ADD_TC(tp, proc1);
153 
154 	return atf_no_error();
155 }
156