xref: /dragonfly/sys/vfs/isofs/cd9660/iso.h (revision 7764eb66)
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