1 /* $NetBSD: h_spawnattr.c,v 1.1 2012/02/13 21:03:08 martin Exp $ */
2
3 /*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles Zhang <charles@NetBSD.org> and
9 * Martin Husemann <martin@NetBSD.org>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <errno.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <signal.h>
37 #include <unistd.h>
38
39 /*
40 * Helper to test the hardcoded assumptions from t_spawnattr.c
41 * Exit with apropriate exit status and print diagnostics to
42 * stderr explaining what is wrong.
43 */
44 int
main(int argc,char ** argv)45 main(int argc, char **argv)
46 {
47 int parent_pipe, res = EXIT_SUCCESS;
48 sigset_t sig;
49 struct sigaction act;
50 ssize_t rd;
51 char tmp;
52
53 sigemptyset(&sig);
54 if (sigprocmask(0, NULL, &sig) < 0) {
55 fprintf(stderr, "%s: sigprocmask error\n", getprogname());
56 res = EXIT_FAILURE;
57 }
58 if (!sigismember(&sig, SIGUSR1)) {
59 fprintf(stderr, "%s: SIGUSR not in procmask\n", getprogname());
60 res = EXIT_FAILURE;
61 }
62 if (sigaction(SIGUSR1, NULL, &act) < 0) {
63 fprintf(stderr, "%s: sigaction error\n", getprogname());
64 res = EXIT_FAILURE;
65 }
66 if (act.sa_sigaction != (void *)SIG_DFL) {
67 fprintf(stderr, "%s: SIGUSR1 action != SIG_DFL\n",
68 getprogname());
69 res = EXIT_FAILURE;
70 }
71
72 if (argc >= 2) {
73 parent_pipe = atoi(argv[1]);
74 if (parent_pipe > 2) {
75 printf("%s: waiting for command from parent on pipe "
76 "%d\n", getprogname(), parent_pipe);
77 rd = read(parent_pipe, &tmp, 1);
78 if (rd == 1) {
79 printf("%s: got command %c from parent\n",
80 getprogname(), tmp);
81 } else if (rd == -1) {
82 printf("%s: %d is no pipe, errno %d\n",
83 getprogname(), parent_pipe, errno);
84 res = EXIT_FAILURE;
85 }
86 }
87 }
88
89 return res;
90 }
91