FreeBSD/Linux Kernel Cross Reference
sys/fs/cd9660/iso.h
1 /*-
2 * Copyright (c) 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley
6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
7 * Support code is derived from software contributed to Berkeley
8 * by Atsushi Murai (amurai@spec.co.jp).
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 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)iso.h 8.6 (Berkeley) 5/10/95
35 * $FreeBSD$
36 */
37
38 #define ISODCL(from, to) (to - from + 1)
39
40 struct iso_volume_descriptor {
41 char type[ISODCL(1,1)]; /* 711 */
42 char id[ISODCL(2,6)];
43 char version[ISODCL(7,7)];
44 char unused[ISODCL(8,8)];
45 char type_sierra[ISODCL(9,9)]; /* 711 */
46 char id_sierra[ISODCL(10,14)];
47 char version_sierra[ISODCL(15,15)];
48 char data[ISODCL(16,2048)];
49 };
50
51 /* volume descriptor types */
52 #define ISO_VD_PRIMARY 1
53 #define ISO_VD_SUPPLEMENTARY 2
54 #define ISO_VD_END 255
55
56 #define ISO_STANDARD_ID "CD001"
57 #define ISO_ECMA_ID "CDW01"
58
59 #define ISO_SIERRA_ID "CDROM"
60
61 struct iso_primary_descriptor {
62 char type [ISODCL ( 1, 1)]; /* 711 */
63 char id [ISODCL ( 2, 6)];
64 char version [ISODCL ( 7, 7)]; /* 711 */
65 char unused1 [ISODCL ( 8, 8)];
66 char system_id [ISODCL ( 9, 40)]; /* achars */
67 char volume_id [ISODCL ( 41, 72)]; /* dchars */
68 char unused2 [ISODCL ( 73, 80)];
69 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
70 char unused3 [ISODCL ( 89, 120)];
71 char volume_set_size [ISODCL (121, 124)]; /* 723 */
72 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
73 char logical_block_size [ISODCL (129, 132)]; /* 723 */
74 char path_table_size [ISODCL (133, 140)]; /* 733 */
75 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
76 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
77 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
78 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
79 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
80 char volume_set_id [ISODCL (191, 318)]; /* dchars */
81 char publisher_id [ISODCL (319, 446)]; /* achars */
82 char preparer_id [ISODCL (447, 574)]; /* achars */
83 char application_id [ISODCL (575, 702)]; /* achars */
84 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
85 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
86 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
87 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
88 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
89 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
90 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
91 char file_structure_version [ISODCL (882, 882)]; /* 711 */
92 char unused4 [ISODCL (883, 883)];
93 char application_data [ISODCL (884, 1395)];
94 char unused5 [ISODCL (1396, 2048)];
95 };
96 #define ISO_DEFAULT_BLOCK_SHIFT 11
97 #define ISO_DEFAULT_BLOCK_SIZE (1 << ISO_DEFAULT_BLOCK_SHIFT)
98
99 /*
100 * Used by Microsoft Joliet extension to ISO9660. Almost the same
101 * as PVD, but byte position 8 is a flag, and 89-120 is for escape.
102 */
103
104 struct iso_supplementary_descriptor {
105 char type [ISODCL ( 1, 1)]; /* 711 */
106 char id [ISODCL ( 2, 6)];
107 char version [ISODCL ( 7, 7)]; /* 711 */
108 char flags [ISODCL ( 8, 8)]; /* 711? */
109 char system_id [ISODCL ( 9, 40)]; /* achars */
110 char volume_id [ISODCL ( 41, 72)]; /* dchars */
111 char unused2 [ISODCL ( 73, 80)];
112 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
113 char escape [ISODCL ( 89, 120)];
114 char volume_set_size [ISODCL (121, 124)]; /* 723 */
115 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
116 char logical_block_size [ISODCL (129, 132)]; /* 723 */
117 char path_table_size [ISODCL (133, 140)]; /* 733 */
118 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
119 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
120 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
121 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
122 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
123 char volume_set_id [ISODCL (191, 318)]; /* dchars */
124 char publisher_id [ISODCL (319, 446)]; /* achars */
125 char preparer_id [ISODCL (447, 574)]; /* achars */
126 char application_id [ISODCL (575, 702)]; /* achars */
127 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
128 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
129 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
130 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
131 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
132 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
133 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
134 char file_structure_version [ISODCL (882, 882)]; /* 711 */
135 char unused4 [ISODCL (883, 883)];
136 char application_data [ISODCL (884, 1395)];
137 char unused5 [ISODCL (1396, 2048)];
138 };
139
140 struct iso_sierra_primary_descriptor {
141 char unknown1 [ISODCL ( 1, 8)]; /* 733 */
142 char type [ISODCL ( 9, 9)]; /* 711 */
143 char id [ISODCL ( 10, 14)];
144 char version [ISODCL ( 15, 15)]; /* 711 */
145 char unused1 [ISODCL ( 16, 16)];
146 char system_id [ISODCL ( 17, 48)]; /* achars */
147 char volume_id [ISODCL ( 49, 80)]; /* dchars */
148 char unused2 [ISODCL ( 81, 88)];
149 char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
150 char unused3 [ISODCL ( 97, 128)];
151 char volume_set_size [ISODCL (129, 132)]; /* 723 */
152 char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
153 char logical_block_size [ISODCL (137, 140)]; /* 723 */
154 char path_table_size [ISODCL (141, 148)]; /* 733 */
155 char type_l_path_table [ISODCL (149, 152)]; /* 731 */
156 char opt_type_l_path_table [ISODCL (153, 156)]; /* 731 */
157 char unknown2 [ISODCL (157, 160)]; /* 731 */
158 char unknown3 [ISODCL (161, 164)]; /* 731 */
159 char type_m_path_table [ISODCL (165, 168)]; /* 732 */
160 char opt_type_m_path_table [ISODCL (169, 172)]; /* 732 */
161 char unknown4 [ISODCL (173, 176)]; /* 732 */
162 char unknown5 [ISODCL (177, 180)]; /* 732 */
163 char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
164 char volume_set_id [ISODCL (215, 342)]; /* dchars */
165 char publisher_id [ISODCL (343, 470)]; /* achars */
166 char preparer_id [ISODCL (471, 598)]; /* achars */
167 char application_id [ISODCL (599, 726)]; /* achars */
168 char copyright_id [ISODCL (727, 790)]; /* achars */
169 char creation_date [ISODCL (791, 806)]; /* ? */
170 char modification_date [ISODCL (807, 822)]; /* ? */
171 char expiration_date [ISODCL (823, 838)]; /* ? */
172 char effective_date [ISODCL (839, 854)]; /* ? */
173 char file_structure_version [ISODCL (855, 855)]; /* 711 */
174 char unused4 [ISODCL (856, 2048)];
175 };
176
177 struct iso_directory_record {
178 char length [ISODCL (1, 1)]; /* 711 */
179 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
180 u_char extent [ISODCL (3, 10)]; /* 733 */
181 u_char size [ISODCL (11, 18)]; /* 733 */
182 char date [ISODCL (19, 25)]; /* 7 by 711 */
183 char flags [ISODCL (26, 26)];
184 char file_unit_size [ISODCL (27, 27)]; /* 711 */
185 char interleave [ISODCL (28, 28)]; /* 711 */
186 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
187 char name_len [ISODCL (33, 33)]; /* 711 */
188 char name [1]; /* XXX */
189 };
190 /* can't take sizeof(iso_directory_record), because of possible alignment
191 of the last entry (34 instead of 33) */
192 #define ISO_DIRECTORY_RECORD_SIZE 33
193
194 struct iso_extended_attributes {
195 u_char owner [ISODCL (1, 4)]; /* 723 */
196 u_char group [ISODCL (5, 8)]; /* 723 */
197 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
198 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
199 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
200 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
201 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
202 char recfmt [ISODCL (79, 79)]; /* 711 */
203 char recattr [ISODCL (80, 80)]; /* 711 */
204 u_char reclen [ISODCL (81, 84)]; /* 723 */
205 char system_id [ISODCL (85, 116)]; /* achars */
206 char system_use [ISODCL (117, 180)];
207 char version [ISODCL (181, 181)]; /* 711 */
208 char len_esc [ISODCL (182, 182)]; /* 711 */
209 char reserved [ISODCL (183, 246)];
210 u_char len_au [ISODCL (247, 250)]; /* 723 */
211 };
212
213 #ifdef _KERNEL
214
215 /* CD-ROM Format type */
216 enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP,
217 ISO_FTYPE_JOLIET, ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA };
218
219 #ifndef ISOFSMNT_ROOT
220 #define ISOFSMNT_ROOT 0
221 #endif
222
223 struct iso_mnt {
224 uint64_t im_flags;
225
226 struct mount *im_mountp;
227 struct cdev *im_dev;
228 struct vnode *im_devvp;
229
230 struct g_consumer *im_cp;
231 struct bufobj *im_bo;
232
233 int logical_block_size;
234 int im_bshift;
235 int im_bmask;
236
237 int volume_space_size;
238
239 char root[ISODCL (157, 190)];
240 int root_extent;
241 int root_size;
242 enum ISO_FTYPE iso_ftype;
243
244 int rr_skip;
245 int rr_skip0;
246
247 int joliet_level;
248
249 void *im_d2l;
250 void *im_l2d;
251 };
252
253 struct ifid {
254 u_short ifid_len;
255 u_short ifid_pad;
256 int ifid_ino;
257 long ifid_start;
258 };
259
260 #define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data))
261
262 #define blkoff(imp, loc) ((loc) & (imp)->im_bmask)
263 #define lblktosize(imp, blk) ((blk) << (imp)->im_bshift)
264 #define lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
265 #define blksize(imp, ip, lbn) ((imp)->logical_block_size)
266
267 int cd9660_vget_internal(struct mount *, ino_t, int, struct vnode **, int,
268 struct iso_directory_record *);
269 #define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \
270 size_t, struct proc *))eopnotsupp)
271
272 extern struct vop_vector cd9660_vnodeops;
273 extern struct vop_vector cd9660_fifoops;
274
275 int isochar(u_char *, u_char *, int, u_short *, int *, int, void *);
276 int isofncmp(u_char *, int, u_char *, int, int, int, void *, void *);
277 void isofntrans(u_char *, int, u_char *, u_short *, int, int, int, int, void *);
278 ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
279 u_short sgetrune(const char *, size_t, char const **, int, void *);
280
281 #endif /* _KERNEL */
282
283 /*
284 * The isonum_xxx functions are inlined anyway, and could come handy even
285 * outside the kernel. Thus we don't hide them here.
286 */
287
288 /*
289 * 7xy
290 * x -> 1 = 8 bits, 2 = 16 bits, 3 = 32 bits
291 * y -> 1 = little-endian, 2 = big-endian, 3 = both (le then be)
292 */
293
294 static __inline uint8_t
295 isonum_711(const unsigned char *p)
296 {
297
298 return (p[0]);
299 }
300
301 static __inline int8_t
302 isonum_712(const unsigned char *p)
303 {
304
305 return ((signed char)p[0]);
306 }
307
308 static __inline uint8_t
309 isonum_713(const unsigned char *p)
310 {
311
312 return (p[0]);
313 }
314
315 static __inline uint16_t
316 isonum_721(const unsigned char *p)
317 {
318
319 return (p[0] | p[1] << 8);
320 }
321
322 static __inline uint16_t
323 isonum_722(const unsigned char *p)
324 {
325
326 return (p[1] | p[0] << 8);
327 }
328
329 static __inline uint16_t
330 isonum_723(const unsigned char *p)
331 {
332
333 return (p[0] | p[1] << 8);
334 }
335
336 static __inline uint32_t
337 isonum_731(const unsigned char *p)
338 {
339
340 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
341 }
342
343 static __inline uint32_t
344 isonum_732(const unsigned char *p)
345 {
346
347 return (p[3] | p[2] << 8 | p[1] << 16 | p[0] << 24);
348 }
349
350 static __inline uint32_t
351 isonum_733(const unsigned char *p)
352 {
353
354 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
355 }
356
357 /*
358 * Associated files have a leading '='.
359 */
360 #define ASSOCCHAR '='
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