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 * 3. 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: head/sys/fs/cd9660/iso.h 151447 2005-10-18 13:35:08Z des $
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_SIZE 2048
97
98 /*
99 * Used by Microsoft Joliet extension to ISO9660. Almost the same
100 * as PVD, but byte position 8 is a flag, and 89-120 is for escape.
101 */
102
103 struct iso_supplementary_descriptor {
104 char type [ISODCL ( 1, 1)]; /* 711 */
105 char id [ISODCL ( 2, 6)];
106 char version [ISODCL ( 7, 7)]; /* 711 */
107 char flags [ISODCL ( 8, 8)]; /* 711? */
108 char system_id [ISODCL ( 9, 40)]; /* achars */
109 char volume_id [ISODCL ( 41, 72)]; /* dchars */
110 char unused2 [ISODCL ( 73, 80)];
111 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
112 char escape [ISODCL ( 89, 120)];
113 char volume_set_size [ISODCL (121, 124)]; /* 723 */
114 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
115 char logical_block_size [ISODCL (129, 132)]; /* 723 */
116 char path_table_size [ISODCL (133, 140)]; /* 733 */
117 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
118 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
119 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
120 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
121 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
122 char volume_set_id [ISODCL (191, 318)]; /* dchars */
123 char publisher_id [ISODCL (319, 446)]; /* achars */
124 char preparer_id [ISODCL (447, 574)]; /* achars */
125 char application_id [ISODCL (575, 702)]; /* achars */
126 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
127 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
128 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
129 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
130 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
131 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
132 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
133 char file_structure_version [ISODCL (882, 882)]; /* 711 */
134 char unused4 [ISODCL (883, 883)];
135 char application_data [ISODCL (884, 1395)];
136 char unused5 [ISODCL (1396, 2048)];
137 };
138
139 struct iso_sierra_primary_descriptor {
140 char unknown1 [ISODCL ( 1, 8)]; /* 733 */
141 char type [ISODCL ( 9, 9)]; /* 711 */
142 char id [ISODCL ( 10, 14)];
143 char version [ISODCL ( 15, 15)]; /* 711 */
144 char unused1 [ISODCL ( 16, 16)];
145 char system_id [ISODCL ( 17, 48)]; /* achars */
146 char volume_id [ISODCL ( 49, 80)]; /* dchars */
147 char unused2 [ISODCL ( 81, 88)];
148 char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
149 char unused3 [ISODCL ( 97, 128)];
150 char volume_set_size [ISODCL (129, 132)]; /* 723 */
151 char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
152 char logical_block_size [ISODCL (137, 140)]; /* 723 */
153 char path_table_size [ISODCL (141, 148)]; /* 733 */
154 char type_l_path_table [ISODCL (149, 152)]; /* 731 */
155 char opt_type_l_path_table [ISODCL (153, 156)]; /* 731 */
156 char unknown2 [ISODCL (157, 160)]; /* 731 */
157 char unknown3 [ISODCL (161, 164)]; /* 731 */
158 char type_m_path_table [ISODCL (165, 168)]; /* 732 */
159 char opt_type_m_path_table [ISODCL (169, 172)]; /* 732 */
160 char unknown4 [ISODCL (173, 176)]; /* 732 */
161 char unknown5 [ISODCL (177, 180)]; /* 732 */
162 char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
163 char volume_set_id [ISODCL (215, 342)]; /* dchars */
164 char publisher_id [ISODCL (343, 470)]; /* achars */
165 char preparer_id [ISODCL (471, 598)]; /* achars */
166 char application_id [ISODCL (599, 726)]; /* achars */
167 char copyright_id [ISODCL (727, 790)]; /* achars */
168 char creation_date [ISODCL (791, 806)]; /* ? */
169 char modification_date [ISODCL (807, 822)]; /* ? */
170 char expiration_date [ISODCL (823, 838)]; /* ? */
171 char effective_date [ISODCL (839, 854)]; /* ? */
172 char file_structure_version [ISODCL (855, 855)]; /* 711 */
173 char unused4 [ISODCL (856, 2048)];
174 };
175
176 struct iso_directory_record {
177 char length [ISODCL (1, 1)]; /* 711 */
178 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
179 u_char extent [ISODCL (3, 10)]; /* 733 */
180 u_char size [ISODCL (11, 18)]; /* 733 */
181 char date [ISODCL (19, 25)]; /* 7 by 711 */
182 char flags [ISODCL (26, 26)];
183 char file_unit_size [ISODCL (27, 27)]; /* 711 */
184 char interleave [ISODCL (28, 28)]; /* 711 */
185 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
186 char name_len [ISODCL (33, 33)]; /* 711 */
187 char name [1]; /* XXX */
188 };
189 /* can't take sizeof(iso_directory_record), because of possible alignment
190 of the last entry (34 instead of 33) */
191 #define ISO_DIRECTORY_RECORD_SIZE 33
192
193 struct iso_extended_attributes {
194 u_char owner [ISODCL (1, 4)]; /* 723 */
195 u_char group [ISODCL (5, 8)]; /* 723 */
196 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
197 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
198 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
199 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
200 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
201 char recfmt [ISODCL (79, 79)]; /* 711 */
202 char recattr [ISODCL (80, 80)]; /* 711 */
203 u_char reclen [ISODCL (81, 84)]; /* 723 */
204 char system_id [ISODCL (85, 116)]; /* achars */
205 char system_use [ISODCL (117, 180)];
206 char version [ISODCL (181, 181)]; /* 711 */
207 char len_esc [ISODCL (182, 182)]; /* 711 */
208 char reserved [ISODCL (183, 246)];
209 u_char len_au [ISODCL (247, 250)]; /* 723 */
210 };
211
212 #ifdef _KERNEL
213
214 /* CD-ROM Format type */
215 enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP,
216 ISO_FTYPE_JOLIET, ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA };
217
218 #ifndef ISOFSMNT_ROOT
219 #define ISOFSMNT_ROOT 0
220 #endif
221
222 struct iso_mnt {
223 int im_flags;
224
225 struct mount *im_mountp;
226 cdev_t im_dev;
227 struct vnode *im_devvp;
228
229 uid_t im_uid;
230 gid_t im_gid;
231 mode_t im_fmask;
232 mode_t im_dmask;
233
234 int logical_block_size;
235 int im_bshift;
236 int im_bmask;
237
238 int volume_space_size;
239 struct netexport im_export;
240
241 char root[ISODCL (157, 190)];
242 int root_extent;
243 int root_size;
244 enum ISO_FTYPE iso_ftype;
245
246 int rr_skip;
247 int rr_skip0;
248
249 int joliet_level;
250
251 void *im_d2l;
252 void *im_l2d;
253 };
254
255 #define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data))
256
257 #define blkoff(imp, loc) ((loc) & (imp)->im_bmask)
258 #define lblktosize(imp, blk) ((blk) << (imp)->im_bshift)
259 #define lblktooff(imp, blk) ((off_t)(blk) << (imp)->im_bshift)
260 #define lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
261 #define blksize(imp, ip, lbn) ((imp)->logical_block_size)
262
263 int cd9660_vget_internal(struct mount *, ino_t, struct vnode **, int,
264 struct iso_directory_record *);
265 int cd9660_init(struct vfsconf *);
266 int cd9660_uninit(struct vfsconf *);
267 #define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \
268 size_t, struct proc *))eopnotsupp)
269
270 int isochar(u_char *, u_char *, int, u_short *, int *, int, void *);
271 int isofncmp(u_char *, int, u_char *, int, int, int, void *, void *);
272 void isofntrans(u_char *, int, u_char *, u_short *, int, int, int, int, void *);
273 ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
274 u_short sgetrune(const char *, size_t, char const **, int, void *);
275
276 #endif /* _KERNEL */
277
278 /*
279 * The isonum_xxx functions are inlined anyway, and could come handy even
280 * outside the kernel. Thus we don't hide them here.
281 */
282
283 /*
284 * 7xy
285 * x -> 1 = 8 bits, 2 = 16 bits, 3 = 32 bits
286 * y -> 1 = little-endian, 2 = big-endian, 3 = both (le then be)
287 */
288
289 static __inline uint8_t
isonum_711(const unsigned char * p)290 isonum_711(const unsigned char *p)
291 {
292 return (p[0]);
293 }
294
295 static __inline int8_t
isonum_712(const unsigned char * p)296 isonum_712(const unsigned char *p)
297 {
298 return ((signed char)p[0]);
299 }
300
301 static __inline uint8_t
isonum_713(const unsigned char * p)302 isonum_713(const unsigned char *p)
303 {
304 return (p[0]);
305 }
306
307 static __inline uint16_t
isonum_721(const unsigned char * p)308 isonum_721(const unsigned char *p)
309 {
310 return (p[0] | p[1] << 8);
311 }
312
313 static __inline uint16_t
isonum_722(const unsigned char * p)314 isonum_722(const unsigned char *p)
315 {
316 return (p[1] | p[0] << 8);
317 }
318
319 static __inline uint16_t
isonum_723(const unsigned char * p)320 isonum_723(const unsigned char *p)
321 {
322 return (p[0] | p[1] << 8);
323 }
324
325 static __inline uint32_t
isonum_731(const unsigned char * p)326 isonum_731(const unsigned char *p)
327 {
328 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
329 }
330
331 static __inline uint32_t
isonum_732(const unsigned char * p)332 isonum_732(const unsigned char *p)
333 {
334 return (p[3] | p[2] << 8 | p[1] << 16 | p[0] << 24);
335 }
336
337 static __inline uint32_t
isonum_733(const unsigned char * p)338 isonum_733(const unsigned char *p)
339 {
340 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
341 }
342
343 /*
344 * Associated files have a leading '='.
345 */
346 #define ASSOCCHAR '='
347