xref: /openbsd/sbin/mknod/mknod.c (revision df930be7)
1 /*	$NetBSD: mknod.c,v 1.8 1995/08/11 00:08:18 jtc Exp $	*/
2 
3 /*
4  * Copyright (c) 1989, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Kevin Fall.
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  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the University of
21  *	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #ifndef lint
40 static char copyright[] =
41 "@(#) Copyright (c) 1989, 1993\n\
42 	The Regents of the University of California.  All rights reserved.\n";
43 #endif /* not lint */
44 
45 #ifndef lint
46 #if 0
47 static char sccsid[] = "@(#)mknod.c	8.1 (Berkeley) 6/5/93";
48 #else
49 static char rcsid[] = "$NetBSD: mknod.c,v 1.8 1995/08/11 00:08:18 jtc Exp $";
50 #endif
51 #endif /* not lint */
52 
53 #include <sys/types.h>
54 #include <sys/stat.h>
55 #include <stdio.h>
56 #include <stdlib.h>
57 #include <unistd.h>
58 #include <err.h>
59 
60 static void usage();
61 
62 int
63 main(argc, argv)
64 	int argc;
65 	char **argv;
66 {
67 	mode_t mode;
68 
69 	if (argc != 5) {
70 		usage();
71 		/* NOTREACHED */
72 	}
73 
74 	mode = 0666;
75 	if (argv[2][0] == 'c')
76 		mode |= S_IFCHR;
77 	else if (argv[2][0] == 'b')
78 		mode |= S_IFBLK;
79 	else {
80 		errx(1, "node must be type 'b' or 'c'.");
81 		/* NOTREACHED */
82 	}
83 
84 	if (mknod(argv[1], mode, makedev(atoi(argv[3]), atoi(argv[4]))) < 0) {
85 		err(1, "%s", argv[1]);
86 		/* NOTREACHED */
87 	}
88 
89 	exit(0);
90 }
91 
92 void
93 usage()
94 {
95 	fprintf(stderr, "usage: mknod name [b | c] major minor\n");
96 	exit(1);
97 }
98