1/*	$NetBSD: mknod.c,v 1.15 1998/09/11 07:22:13 mycroft Exp $	*/
2
3/*-
4 * Copyright (c) 1998 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 1.15 1998/09/11 07:22:13 mycroft 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
56int main __P((int, char *[]));
57static void usage __P((void));
58typedef	dev_t pack_t __P((int, u_long []));
59
60
61pack_t pack_native;
62
63dev_t
64pack_native(n, numbers)
65	int n;
66	u_long numbers[];
67{
68	dev_t dev=0; /* Quiet -Wall */
69
70	if (n == 2) {
71		dev = makedev(numbers[0], numbers[1]);
72		if (major(dev) != numbers[0])
73			errx(1, "invalid major number");
74		if (minor(dev) != numbers[1])
75			errx(1, "invalid minor number");
76	} else
77		errx(1, "too many fields for format");
78	return (dev);
79}
80
81
82#define	major_netbsd(x)		((int32_t)((((x) & 0x000fff00) >>  8)))
83#define	minor_netbsd(x)		((int32_t)((((x) & 0xfff00000) >> 12) | \
84					   (((x) & 0x000000ff) >>  0)))
85#define	makedev_netbsd(x,y)	((dev_t)((((x) <<  8) & 0x000fff00) | \
86					 (((y) << 12) & 0xfff00000) | \
87					 (((y) <<  0) & 0x000000ff)))
88
89pack_t pack_netbsd;
90
91dev_t
92pack_netbsd(n, numbers)
93	int n;
94	u_long numbers[];
95{
96	dev_t dev=0; /* Quiet -Wall */
97
98	if (n == 2) {
99		dev = makedev_netbsd(numbers[0], numbers[1]);
100		if (major_netbsd(dev) != numbers[0])
101			errx(1, "invalid major number");
102		if (minor_netbsd(dev) != numbers[1])
103			errx(1, "invalid minor number");
104	} else
105		errx(1, "too many fields for format");
106	return (dev);
107}
108
109
110#define	major_freebsd(x)	((int32_t)(((x) & 0x0000ff00) >> 8))
111#define	minor_freebsd(x)	((int32_t)(((x) & 0xffff00ff) >> 0))
112#define	makedev_freebsd(x,y)	((dev_t)((((x) << 8) & 0x0000ff00) | \
113					 (((y) << 0) & 0xffff00ff)))
114
115pack_t pack_freebsd;
116
117dev_t
118pack_freebsd(n, numbers)
119	int n;
120	u_long numbers[];
121{
122	dev_t dev=0; /* Quiet -Wall */
123
124	if (n == 2) {
125		dev = makedev_freebsd(numbers[0], numbers[1]);
126		if (major_freebsd(dev) != numbers[0])
127			errx(1, "invalid major number");
128		if (minor_freebsd(dev) != numbers[1])
129			errx(1, "invalid minor number");
130	} else
131		errx(1, "too many fields for format");
132	return (dev);
133}
134
135
136#define	major_8_8(x)		((int32_t)(((x) & 0x0000ff00) >> 8))
137#define	minor_8_8(x)		((int32_t)(((x) & 0x000000ff) >> 0))
138#define	makedev_8_8(x,y)	((dev_t)((((x) << 8) & 0x0000ff00) | \
139					 (((y) << 0) & 0x000000ff)))
140
141pack_t pack_8_8;
142
143dev_t
144pack_8_8(n, numbers)
145	int n;
146	u_long numbers[];
147{
148	dev_t dev=0; /* Quiet -Wall */
149
150	if (n == 2) {
151		dev = makedev_8_8(numbers[0], numbers[1]);
152		if (major_8_8(dev) != numbers[0])
153			errx(1, "invalid major number");
154		if (minor_8_8(dev) != numbers[1])
155			errx(1, "invalid minor number");
156	} else
157		errx(1, "too many fields for format");
158	return (dev);
159}
160
161
162#define	major_12_20(x)		((int32_t)(((x) & 0xfff00000) >> 20))
163#define	minor_12_20(x)		((int32_t)(((x) & 0x000fffff) >>  0))
164#define	makedev_12_20(x,y)	((dev_t)((((x) << 20) & 0xfff00000) | \
165					 (((y) <<  0) & 0x000fffff)))
166
167pack_t pack_12_20;
168
169dev_t
170pack_12_20(n, numbers)
171	int n;
172	u_long numbers[];
173{
174	dev_t dev=0; /* Quiet -Wall */
175
176	if (n == 2) {
177		dev = makedev_12_20(numbers[0], numbers[1]);
178		if (major_12_20(dev) != numbers[0])
179			errx(1, "invalid major number");
180		if (minor_12_20(dev) != numbers[1])
181			errx(1, "invalid minor number");
182	} else
183		errx(1, "too many fields for format");
184	return (dev);
185}
186
187
188#define	major_14_18(x)		((int32_t)(((x) & 0xfffc0000) >> 18))
189#define	minor_14_18(x)		((int32_t)(((x) & 0x0003ffff) >>  0))
190#define	makedev_14_18(x,y)	((dev_t)((((x) << 18) & 0xfffc0000) | \
191					 (((y) <<  0) & 0x0003ffff)))
192
193pack_t pack_14_18;
194
195dev_t
196pack_14_18(n, numbers)
197	int n;
198	u_long numbers[];
199{
200	dev_t dev=0; /* Quiet -Wall */
201
202	if (n == 2) {
203		dev = makedev_14_18(numbers[0], numbers[1]);
204		if (major_14_18(dev) != numbers[0])
205			errx(1, "invalid major number");
206		if (minor_14_18(dev) != numbers[1])
207			errx(1, "invalid minor number");
208	} else
209		errx(1, "too many fields for format");
210	return (dev);
211}
212
213
214#define	major_8_24(x)		((int32_t)(((x) & 0xff000000) >> 24))
215#define	minor_8_24(x)		((int32_t)(((x) & 0x00ffffff) >>  0))
216#define	makedev_8_24(x,y)	((dev_t)((((x) << 24) & 0xff000000) | \
217					 (((y) <<  0) & 0x00ffffff)))
218
219pack_t pack_8_24;
220
221dev_t
222pack_8_24(n, numbers)
223	int n;
224	u_long numbers[];
225{
226	dev_t dev=0; /* Quiet -Wall */
227
228	if (n == 2) {
229		dev = makedev_8_24(numbers[0], numbers[1]);
230		if (major_8_24(dev) != numbers[0])
231			errx(1, "invalid major number");
232		if (minor_8_24(dev) != numbers[1])
233			errx(1, "invalid minor number");
234	} else
235		errx(1, "too many fields for format");
236	return (dev);
237}
238
239
240#define	major_12_12_8(x)	((int32_t)(((x) & 0xfff00000) >> 20))
241#define	unit_12_12_8(x)		((int32_t)(((x) & 0x000fff00) >>  8))
242#define	subunit_12_12_8(x)	((int32_t)(((x) & 0x000000ff) >>  0))
243#define	makedev_12_12_8(x,y,z)	((dev_t)((((x) << 20) & 0xfff00000) | \
244					 (((y) <<  8) & 0x000fff00) | \
245					 (((z) <<  0) & 0x000000ff)))
246
247pack_t pack_bsdos;
248
249dev_t
250pack_bsdos(n, numbers)
251	int n;
252	u_long numbers[];
253{
254	dev_t dev=0; /* Quiet -Wall */
255
256	if (n == 2) {
257		dev = makedev_12_20(numbers[0], numbers[1]);
258		if (major_12_20(dev) != numbers[0])
259			errx(1, "invalid major number");
260		if (minor_12_20(dev) != numbers[1])
261			errx(1, "invalid minor number");
262	} else if (n == 3) {
263		dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]);
264		if (major_12_12_8(dev) != numbers[0])
265			errx(1, "invalid major number");
266		if (unit_12_12_8(dev) != numbers[1])
267			errx(1, "invalid unit number");
268		if (subunit_12_12_8(dev) != numbers[2])
269			errx(1, "invalid subunit number");
270	} else
271		errx(1, "too many fields for format");
272	return (dev);
273}
274
275
276struct format {
277	char	*name;
278	pack_t	*pack;
279} formats[] = {
280	{"386bsd",  pack_8_8},
281	{"4bsd",    pack_8_8},
282	{"bsdos",   pack_bsdos},
283	{"freebsd", pack_freebsd},
284	{"hpux",    pack_8_24},
285	{"isc",     pack_8_8},
286	{"linux",   pack_8_8},
287	{"native",  pack_native},
288	{"netbsd",  pack_netbsd},
289	{"osf1",    pack_12_20},
290	{"sco",     pack_8_8},
291	{"solaris", pack_14_18},
292	{"sunos",   pack_8_8},
293	{"svr3",    pack_8_8},
294	{"svr4",    pack_14_18},
295	{"ultrix",  pack_8_8},
296};
297
298int compare_format __P((const void *, const void *));
299
300int
301compare_format(key, element)
302	const void *key;
303	const void *element;
304{
305	const char *name;
306	const struct format *format;
307
308	name = key;
309	format = element;
310
311	return (strcmp(name, format->name));
312}
313
314
315int
316main(argc, argv)
317	int argc;
318	char **argv;
319{
320	char *name;
321	mode_t mode;
322	dev_t dev;
323	pack_t *pack;
324	u_long numbers[8];
325	struct format *format;
326	char *p;
327	int n;
328	int ch;
329
330	pack = pack_native;
331
332	while ((ch = getopt(argc, argv, "F:")) != -1) {
333		switch (ch) {
334		case 'F':
335			format = bsearch(optarg, formats,
336			    sizeof(formats)/sizeof(formats[0]),
337			    sizeof(formats[0]), compare_format);
338			if (format == 0)
339				errx(1, "invalid format: %s", optarg);
340			pack = format->pack;
341			break;
342
343		default:
344		case '?':
345			usage();
346		}
347	}
348	argc -= optind;
349	argv += optind;
350
351	if (argc < 2 || argc > 10)
352		usage();
353
354	name = *argv;
355	argc--;
356	argv++;
357
358	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
359	if (*argv[0] == 'c')
360		mode |= S_IFCHR;
361	else if (*argv[0] == 'b')
362		mode |= S_IFBLK;
363	else if (*argv[0] == 'w')
364		mode |= S_IFWHT;
365	else
366		errx(1, "node type must be 'b' or 'c' or 'w'.");
367	argc--;
368	argv++;
369
370	for (n = 0; n < argc; n++) {
371		if (S_ISWHT(mode)) {
372			errx(1, "whiteout nodes have no device numbers.");
373		}
374		numbers[n] = strtoul(argv[n], &p, 0);
375		if ((p && *p != '\0') || (numbers[n] == ULONG_MAX && errno == ERANGE))
376			errx(1, "invalid number: %s", argv[n]);
377	}
378
379	if (S_ISWHT(mode))
380		dev = 0;
381	else if (argc == 1)
382		dev = (dev_t)numbers[0];
383	else
384		dev = (*pack)(argc, numbers);
385
386#if 0
387	printf("name: %s\nmode: %05o\ndev:  %08x\n", name, mode, dev);
388#else
389	if (mknod(name, mode, dev) < 0)
390		err(1, "%s", name);
391#endif
392
393	exit(0);
394}
395
396void
397usage()
398{
399
400	fprintf(stderr, "usage: mknod [-F format] name [b | c] major minor\n");
401	fprintf(stderr, "       mknod [-F format] name [b | c] major unit subunit\n");
402	fprintf(stderr, "       mknod name [b | c] number\n");
403	fprintf(stderr, "       mknod name w\n");
404	exit(1);
405}
406