xref: /netbsd/sbin/mknod/mknod.c (revision bf9ec67e)
1 /*	$NetBSD: mknod.c,v 1.24 2001/10/08 04:45:29 lukem Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Charles M. Hannum.
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 NetBSD
21  *        Foundation, Inc. and its contributors.
22  * 4. Neither the name of The NetBSD Foundation nor the names of its
23  *    contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36  * POSSIBILITY OF SUCH DAMAGE.
37  */
38 
39 #include <sys/cdefs.h>
40 #ifndef lint
41 __COPYRIGHT("@(#) Copyright (c) 1998 The NetBSD Foundation, Inc.  All rights reserved.\n");
42 __RCSID("$NetBSD: mknod.c,v 1.24 2001/10/08 04:45:29 lukem Exp $");
43 #endif /* not lint */
44 
45 #include <sys/types.h>
46 #include <sys/stat.h>
47 
48 #include <err.h>
49 #include <errno.h>
50 #include <limits.h>
51 #include <stdio.h>
52 #include <stdlib.h>
53 #include <unistd.h>
54 #include <string.h>
55 
56 #include "pack_dev.h"
57 
58 	int	main(int, char *[]);
59 static	void	usage(void);
60 
61 
62 #define	MAXARGS	3		/* 3 for bsdos, 2 for rest */
63 
64 int
65 main(int argc, char **argv)
66 {
67 	char	*name, *p;
68 	mode_t	 mode;
69 	dev_t	 dev;
70 	pack_t	*pack;
71 	u_long	 numbers[MAXARGS];
72 	int	 n, ch, fifo, hasformat;
73 
74 	dev = 0;
75 	fifo = hasformat = 0;
76 	pack = pack_native;
77 
78 	while ((ch = getopt(argc, argv, "F:")) != -1) {
79 		switch (ch) {
80 		case 'F':
81 			pack = pack_find(optarg);
82 			if (pack == NULL)
83 				errx(1, "invalid format: %s", optarg);
84 			hasformat++;
85 			break;
86 
87 		default:
88 		case '?':
89 			usage();
90 		}
91 	}
92 	argc -= optind;
93 	argv += optind;
94 
95 	if (argc < 2 || argc > 10)
96 		usage();
97 
98 	name = *argv;
99 	argc--;
100 	argv++;
101 
102 	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
103 	if (argv[0][1] != '\0')
104 		goto badtype;
105 	switch (*argv[0]) {
106 	case 'c':
107 		mode |= S_IFCHR;
108 		break;
109 
110 	case 'b':
111 		mode |= S_IFBLK;
112 		break;
113 
114 	case 'p':
115 		if (hasformat)
116 			errx(1, "format is meaningless for fifos");
117 		fifo = 1;
118 		break;
119 
120 	default:
121  badtype:
122 		errx(1, "node type must be 'b', 'c' or 'p'.");
123 	}
124 	argc--;
125 	argv++;
126 
127 	if (fifo) {
128 		if (argc != 0)
129 			usage();
130 	} else {
131 		if (argc < 1 || argc > MAXARGS)
132 			usage();
133 	}
134 
135 	for (n = 0; n < argc; n++) {
136 		numbers[n] = strtoul(argv[n], &p, 0);
137 		if ((p && *p != '\0') ||
138 		    (numbers[n] == ULONG_MAX && errno == ERANGE))
139 			errx(1, "invalid number: %s", argv[n]);
140 	}
141 
142 	switch (argc) {
143 	case 0:
144 		dev = 0;
145 		break;
146 
147 	case 1:
148 		dev = numbers[0];
149 		break;
150 
151 	default:
152 		dev = (*pack)(argc, numbers);
153 		break;
154 	}
155 
156 #if 0
157 	printf("name: %s\nmode: %05o\ndev:  %08x\n", name, mode, dev);
158 #else
159 	if ((fifo ? mkfifo(name, mode) : mknod(name, mode, dev)) < 0)
160 		err(1, "%s", name);
161 #endif
162 
163 	return(0);
164 }
165 
166 static void
167 usage(void)
168 {
169 	const char *progname = getprogname();
170 
171 	(void)fprintf(stderr,
172 	    "Usage: %s [-F format] name [b | c] major minor\n", progname);
173 	(void)fprintf(stderr,
174 	    "       %s [-F format] name [b | c] major unit subunit\n",
175 	    progname);
176 	(void)fprintf(stderr, "       %s name [b | c] number\n", progname);
177 	(void)fprintf(stderr, "       %s name p\n", progname);
178 	exit(1);
179 }
180