1 /* $NetBSD: pack_dev.c,v 1.12 2013/06/14 16:28:20 tsutsui 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /* Originally from NetBSD's mknod(8) source. */
33
34 #include "archive_platform.h"
35
36 #if HAVE_SYS_CDEFS_H
37 #include <sys/cdefs.h>
38 #endif
39 #if !defined(lint)
40 __RCSID("$NetBSD$");
41 #endif /* not lint */
42
43 #ifdef HAVE_LIMITS_H
44 #include <limits.h>
45 #endif
46
47 #include <stdio.h>
48 #ifdef HAVE_STDLIB_H
49 #include <stdlib.h>
50 #endif
51 #ifdef HAVE_STRING_H
52 #include <string.h>
53 #endif
54 #ifdef HAVE_SYS_TYPES_H
55 #include <sys/types.h>
56 #endif
57 #ifdef HAVE_SYS_STAT_H
58 #include <sys/stat.h>
59 #endif
60 #ifdef HAVE_SYS_SYSMACROS_H
61 #include <sys/sysmacros.h>
62 #endif
63 #ifdef HAVE_SYS_MKDEV_H
64 #include <sys/mkdev.h>
65 #endif
66 #ifdef HAVE_UNISTD_H
67 #include <unistd.h>
68 #endif
69
70 #include "archive_pack_dev.h"
71
72 static pack_t pack_netbsd;
73 static pack_t pack_freebsd;
74 static pack_t pack_8_8;
75 static pack_t pack_12_20;
76 static pack_t pack_14_18;
77 static pack_t pack_8_24;
78 static pack_t pack_bsdos;
79 static int compare_format(const void *, const void *);
80
81 static const char iMajorError[] = "invalid major number";
82 static const char iMinorError[] = "invalid minor number";
83 static const char tooManyFields[] = "too many fields for format";
84
85 /* This is blatantly stolen from libarchive/archive_entry.c,
86 * in an attempt to get this to play nice on MinGW... */
87 #if !defined(HAVE_MAJOR) && !defined(major)
88 /* Replacement for major/minor/makedev. */
89 #define major(x) ((int)(0x00ff & ((x) >> 8)))
90 #define minor(x) ((int)(0xffff00ff & (x)))
91 #define makedev(maj,min) ((0xff00 & ((maj)<<8)) | (0xffff00ff & (min)))
92 #endif
93
94 /* Play games to come up with a suitable makedev() definition. */
95 #ifdef __QNXNTO__
96 /* QNX. <sigh> */
97 #include <sys/netmgr.h>
98 #define apd_makedev(maj, min) makedev(ND_LOCAL_NODE, (maj), (min))
99 #elif defined makedev
100 /* There's a "makedev" macro. */
101 #define apd_makedev(maj, min) makedev((maj), (min))
102 #elif defined mkdev || ((defined _WIN32 || defined __WIN32__) && !defined(__CYGWIN__))
103 /* Windows. <sigh> */
104 #define apd_makedev(maj, min) mkdev((maj), (min))
105 #else
106 /* There's a "makedev" function. */
107 #define apd_makedev(maj, min) makedev((maj), (min))
108 #endif
109
110 /* exported */
111 dev_t
pack_native(int n,unsigned long numbers[],const char ** error)112 pack_native(int n, unsigned long numbers[], const char **error)
113 {
114 dev_t dev = 0;
115
116 if (n == 2) {
117 dev = apd_makedev(numbers[0], numbers[1]);
118 if ((unsigned long)major(dev) != numbers[0])
119 *error = iMajorError;
120 else if ((unsigned long)minor(dev) != numbers[1])
121 *error = iMinorError;
122 } else
123 *error = tooManyFields;
124 return (dev);
125 }
126
127
128 static dev_t
pack_netbsd(int n,unsigned long numbers[],const char ** error)129 pack_netbsd(int n, unsigned long numbers[], const char **error)
130 {
131 dev_t dev = 0;
132
133 if (n == 2) {
134 dev = makedev_netbsd(numbers[0], numbers[1]);
135 if ((unsigned long)major_netbsd(dev) != numbers[0])
136 *error = iMajorError;
137 else if ((unsigned long)minor_netbsd(dev) != numbers[1])
138 *error = iMinorError;
139 } else
140 *error = tooManyFields;
141 return (dev);
142 }
143
144
145 #define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8))
146 #define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0))
147 #define makedev_freebsd(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \
148 (((y) << 0) & 0xffff00ff)))
149
150 static dev_t
pack_freebsd(int n,unsigned long numbers[],const char ** error)151 pack_freebsd(int n, unsigned long numbers[], const char **error)
152 {
153 dev_t dev = 0;
154
155 if (n == 2) {
156 dev = makedev_freebsd(numbers[0], numbers[1]);
157 if ((unsigned long)major_freebsd(dev) != numbers[0])
158 *error = iMajorError;
159 if ((unsigned long)minor_freebsd(dev) != numbers[1])
160 *error = iMinorError;
161 } else
162 *error = tooManyFields;
163 return (dev);
164 }
165
166
167 #define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8))
168 #define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0))
169 #define makedev_8_8(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \
170 (((y) << 0) & 0x000000ff)))
171
172 static dev_t
pack_8_8(int n,unsigned long numbers[],const char ** error)173 pack_8_8(int n, unsigned long numbers[], const char **error)
174 {
175 dev_t dev = 0;
176
177 if (n == 2) {
178 dev = makedev_8_8(numbers[0], numbers[1]);
179 if ((unsigned long)major_8_8(dev) != numbers[0])
180 *error = iMajorError;
181 if ((unsigned long)minor_8_8(dev) != numbers[1])
182 *error = iMinorError;
183 } else
184 *error = tooManyFields;
185 return (dev);
186 }
187
188
189 #define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20))
190 #define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0))
191 #define makedev_12_20(x,y) ((dev_t)((((x) << 20) & 0xfff00000) | \
192 (((y) << 0) & 0x000fffff)))
193
194 static dev_t
pack_12_20(int n,unsigned long numbers[],const char ** error)195 pack_12_20(int n, unsigned long numbers[], const char **error)
196 {
197 dev_t dev = 0;
198
199 if (n == 2) {
200 dev = makedev_12_20(numbers[0], numbers[1]);
201 if ((unsigned long)major_12_20(dev) != numbers[0])
202 *error = iMajorError;
203 if ((unsigned long)minor_12_20(dev) != numbers[1])
204 *error = iMinorError;
205 } else
206 *error = tooManyFields;
207 return (dev);
208 }
209
210
211 #define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18))
212 #define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0))
213 #define makedev_14_18(x,y) ((dev_t)((((x) << 18) & 0xfffc0000) | \
214 (((y) << 0) & 0x0003ffff)))
215
216 static dev_t
pack_14_18(int n,unsigned long numbers[],const char ** error)217 pack_14_18(int n, unsigned long numbers[], const char **error)
218 {
219 dev_t dev = 0;
220
221 if (n == 2) {
222 dev = makedev_14_18(numbers[0], numbers[1]);
223 if ((unsigned long)major_14_18(dev) != numbers[0])
224 *error = iMajorError;
225 if ((unsigned long)minor_14_18(dev) != numbers[1])
226 *error = iMinorError;
227 } else
228 *error = tooManyFields;
229 return (dev);
230 }
231
232
233 #define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24))
234 #define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0))
235 #define makedev_8_24(x,y) ((dev_t)((((x) << 24) & 0xff000000) | \
236 (((y) << 0) & 0x00ffffff)))
237
238 static dev_t
pack_8_24(int n,unsigned long numbers[],const char ** error)239 pack_8_24(int n, unsigned long numbers[], const char **error)
240 {
241 dev_t dev = 0;
242
243 if (n == 2) {
244 dev = makedev_8_24(numbers[0], numbers[1]);
245 if ((unsigned long)major_8_24(dev) != numbers[0])
246 *error = iMajorError;
247 if ((unsigned long)minor_8_24(dev) != numbers[1])
248 *error = iMinorError;
249 } else
250 *error = tooManyFields;
251 return (dev);
252 }
253
254
255 #define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20))
256 #define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8))
257 #define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0))
258 #define makedev_12_12_8(x,y,z) ((dev_t)((((x) << 20) & 0xfff00000) | \
259 (((y) << 8) & 0x000fff00) | \
260 (((z) << 0) & 0x000000ff)))
261
262 static dev_t
pack_bsdos(int n,unsigned long numbers[],const char ** error)263 pack_bsdos(int n, unsigned long numbers[], const char **error)
264 {
265 dev_t dev = 0;
266
267 if (n == 2) {
268 dev = makedev_12_20(numbers[0], numbers[1]);
269 if ((unsigned long)major_12_20(dev) != numbers[0])
270 *error = iMajorError;
271 if ((unsigned long)minor_12_20(dev) != numbers[1])
272 *error = iMinorError;
273 } else if (n == 3) {
274 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]);
275 if ((unsigned long)major_12_12_8(dev) != numbers[0])
276 *error = iMajorError;
277 if ((unsigned long)unit_12_12_8(dev) != numbers[1])
278 *error = "invalid unit number";
279 if ((unsigned long)subunit_12_12_8(dev) != numbers[2])
280 *error = "invalid subunit number";
281 } else
282 *error = tooManyFields;
283 return (dev);
284 }
285
286
287 /* list of formats and pack functions */
288 /* this list must be sorted lexically */
289 static const struct format {
290 const char *name;
291 pack_t *pack;
292 } formats[] = {
293 {"386bsd", pack_8_8},
294 {"4bsd", pack_8_8},
295 {"bsdos", pack_bsdos},
296 {"freebsd", pack_freebsd},
297 {"hpux", pack_8_24},
298 {"isc", pack_8_8},
299 {"linux", pack_8_8},
300 {"native", pack_native},
301 {"netbsd", pack_netbsd},
302 {"osf1", pack_12_20},
303 {"sco", pack_8_8},
304 {"solaris", pack_14_18},
305 {"sunos", pack_8_8},
306 {"svr3", pack_8_8},
307 {"svr4", pack_14_18},
308 {"ultrix", pack_8_8},
309 };
310
311 static int
compare_format(const void * key,const void * element)312 compare_format(const void *key, const void *element)
313 {
314 const char *name;
315 const struct format *format;
316
317 name = key;
318 format = element;
319
320 return (strcmp(name, format->name));
321 }
322
323
324 pack_t *
pack_find(const char * name)325 pack_find(const char *name)
326 {
327 struct format *format;
328
329 format = bsearch(name, formats,
330 sizeof(formats)/sizeof(formats[0]),
331 sizeof(formats[0]), compare_format);
332 if (format == 0)
333 return (NULL);
334 return (format->pack);
335 }
336