xref: /openbsd-src/usr.bin/arch/arch.c (revision a28daedfc357b214be5c701aa8ba8adb29a7f1c2)
1 /*
2  * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
15  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
16  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
17  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef lint
27 static char rcsid[] = "$OpenBSD: arch.c,v 1.11 2004/05/09 03:20:45 deraadt Exp $";
28 #endif /* not lint */
29 
30 #include <sys/param.h>
31 
32 #include <err.h>
33 #include <locale.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <unistd.h>
38 
39 static void usage(void);
40 
41 static int machine;
42 
43 int
44 main(int argc, char *argv[])
45 {
46 	extern char *__progname;
47 	int short_form = 0, c;
48 	char *arch, *opts;
49 
50 	setlocale(LC_ALL, "");
51 
52 	machine = strcmp(__progname, "machine") == 0;
53 	if (machine) {
54 		arch = MACHINE;
55 		opts = "a";
56 		short_form++;
57 	} else {
58 		arch = MACHINE_ARCH;
59 		opts = "ks";
60 	}
61 	while ((c = getopt(argc, argv, opts)) != -1)
62 		switch (c) {
63 		case 'a':
64 			arch = MACHINE_ARCH;
65 			break;
66 		case 'k':
67 			arch = MACHINE;
68 			break;
69 		case 's':
70 			short_form++;
71 			break;
72 		default:
73 			usage();
74 			/* NOTREACHED */
75 		}
76 	if (optind != argc) {
77 		usage();
78 		/* NOTREACHED */
79 	}
80 	if (!short_form) {
81 		fputs("OpenBSD", stdout);
82 		fputc('.', stdout);
83 	}
84 	fputs(arch, stdout);
85 	fputc('\n', stdout);
86 	exit(0);
87 }
88 
89 static void
90 usage(void)
91 {
92 	if (machine)
93 		fprintf(stderr, "usage: machine [-a]\n");
94 	else
95 		fprintf(stderr, "usage: arch [-ks]\n");
96 	exit(1);
97 }
98