1 /* $NetBSD: h_spawn.c,v 1.3 2021/11/07 15:46:20 christos 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 #include <sys/cdefs.h>
33 __RCSID("$NetBSD: h_spawn.c,v 1.3 2021/11/07 15:46:20 christos Exp $");
34
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39
40 int
main(int argc,char ** argv)41 main(int argc, char **argv)
42 {
43 unsigned long ret;
44 char *endp;
45
46 if (argc == 2 && strcmp(argv[1], "--resetids") == 0) {
47 if (getuid() != geteuid() || getgid() != getegid()) {
48 fprintf(stderr, "uid/gid do not match effective ids, "
49 "uid: %d euid: %d gid: %d egid: %d\n",
50 getuid(), geteuid(), getgid(), getegid());
51 exit(255);
52 }
53 return 0;
54 } else if (argc != 2) {
55 fprintf(stderr, "usage:\n\t%s (retcode)\n", getprogname());
56 exit(255);
57 }
58 ret = strtoul(argv[1], &endp, 10);
59 if (*endp != 0) {
60 fprintf(stderr,
61 "invalid arg: %s\n"
62 "usage:\n\t%s (retcode)\n", endp, getprogname());
63 exit(255);
64 }
65
66 fprintf(stderr, "%s exiting with status %lu\n", getprogname(), ret);
67 return ret;
68 }
69