xref: /illumos-gate/usr/src/boot/sys/fs/cd9660/iso.h (revision 2a6e99a0)
1 /*
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1994
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley
8  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
9  * Support code is derived from software contributed to Berkeley
10  * by Atsushi Murai (amurai@spec.co.jp).
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	@(#)iso.h	8.6 (Berkeley) 5/10/95
37  */
38 
39 #ifndef ISO_H
40 #define	ISO_H
41 
42 #define	ISODCL(from, to) (to - from + 1)
43 
44 struct iso_volume_descriptor {
45 	char type[ISODCL(1, 1)]; /* 711 */
46 	char id[ISODCL(2, 6)];
47 	char version[ISODCL(7, 7)];
48 	char unused[ISODCL(8, 8)];
49 	char type_sierra[ISODCL(9, 9)]; /* 711 */
50 	char id_sierra[ISODCL(10, 14)];
51 	char version_sierra[ISODCL(15, 15)];
52 	char data[ISODCL(16, 2048)];
53 };
54 
55 /* volume descriptor types */
56 #define	ISO_VD_PRIMARY 1
57 #define	ISO_VD_SUPPLEMENTARY 2
58 #define	ISO_VD_END 255
59 
60 #define	ISO_STANDARD_ID "CD001"
61 #define	ISO_ECMA_ID	"CDW01"
62 
63 #define	ISO_SIERRA_ID	"CDROM"
64 
65 struct iso_primary_descriptor {
66 	uchar_t type			[ISODCL(1,	1)]; /* 711 */
67 	char id				[ISODCL(2,	6)];
68 	char version			[ISODCL(7,	7)]; /* 711 */
69 	char unused1			[ISODCL(8,	8)];
70 	char system_id			[ISODCL(9,  40)]; /* achars */
71 	char volume_id			[ISODCL(41,  72)]; /* dchars */
72 	char unused2			[ISODCL(73,  80)];
73 	char volume_space_size		[ISODCL(81,  88)]; /* 733 */
74 	char unused3			[ISODCL(89, 120)];
75 	char volume_set_size		[ISODCL(121, 124)]; /* 723 */
76 	char volume_sequence_number	[ISODCL(125, 128)]; /* 723 */
77 	uchar_t logical_block_size	[ISODCL(129, 132)]; /* 723 */
78 	char path_table_size		[ISODCL(133, 140)]; /* 733 */
79 	char type_l_path_table		[ISODCL(141, 144)]; /* 731 */
80 	char opt_type_l_path_table	[ISODCL(145, 148)]; /* 731 */
81 	char type_m_path_table		[ISODCL(149, 152)]; /* 732 */
82 	char opt_type_m_path_table	[ISODCL(153, 156)]; /* 732 */
83 	char root_directory_record	[ISODCL(157, 190)]; /* 9.1 */
84 	char volume_set_id		[ISODCL(191, 318)]; /* dchars */
85 	char publisher_id		[ISODCL(319, 446)]; /* achars */
86 	char preparer_id		[ISODCL(447, 574)]; /* achars */
87 	char application_id		[ISODCL(575, 702)]; /* achars */
88 	char copyright_file_id		[ISODCL(703, 739)]; /* 7.5 dchars */
89 	char abstract_file_id		[ISODCL(740, 776)]; /* 7.5 dchars */
90 	char bibliographic_file_id	[ISODCL(777, 813)]; /* 7.5 dchars */
91 	char creation_date		[ISODCL(814, 830)]; /* 8.4.26.1 */
92 	char modification_date		[ISODCL(831, 847)]; /* 8.4.26.1 */
93 	char expiration_date		[ISODCL(848, 864)]; /* 8.4.26.1 */
94 	char effective_date		[ISODCL(865, 881)]; /* 8.4.26.1 */
95 	char file_structure_version	[ISODCL(882, 882)]; /* 711 */
96 	char unused4			[ISODCL(883, 883)];
97 	char application_data		[ISODCL(884, 1395)];
98 	char unused5			[ISODCL(1396, 2048)];
99 } __packed;
100 #define ISO_DEFAULT_BLOCK_SHIFT		11
101 #define ISO_DEFAULT_BLOCK_SIZE		(1 << ISO_DEFAULT_BLOCK_SHIFT)
102 
103 /*
104  * Used by Microsoft Joliet extension to ISO9660. Almost the same
105  * as PVD, but byte position 8 is a flag, and 89-120 is for escape.
106  */
107 
108 struct iso_supplementary_descriptor {
109 	char type				[ISODCL(1,   1)]; /* 711 */
110 	char id				[ISODCL(2,   6)];
111 	char version			[ISODCL(7,   7)]; /* 711 */
112 	char flags			[ISODCL(8,   8)]; /* 711? */
113 	char system_id			[ISODCL(9,  40)]; /* achars */
114 	char volume_id			[ISODCL(41,  72)]; /* dchars */
115 	char unused2			[ISODCL(73,  80)];
116 	char volume_space_size		[ISODCL(81,  88)]; /* 733 */
117 	char escape			[ISODCL(89, 120)];
118 	char volume_set_size		[ISODCL(121, 124)]; /* 723 */
119 	char volume_sequence_number	[ISODCL(125, 128)]; /* 723 */
120 	char logical_block_size		[ISODCL(129, 132)]; /* 723 */
121 	char path_table_size		[ISODCL(133, 140)]; /* 733 */
122 	char type_l_path_table		[ISODCL(141, 144)]; /* 731 */
123 	char opt_type_l_path_table	[ISODCL(145, 148)]; /* 731 */
124 	char type_m_path_table		[ISODCL(149, 152)]; /* 732 */
125 	char opt_type_m_path_table	[ISODCL(153, 156)]; /* 732 */
126 	char root_directory_record	[ISODCL(157, 190)]; /* 9.1 */
127 	char volume_set_id		[ISODCL(191, 318)]; /* dchars */
128 	char publisher_id			[ISODCL(319, 446)]; /* achars */
129 	char preparer_id			[ISODCL(447, 574)]; /* achars */
130 	char application_id		[ISODCL(575, 702)]; /* achars */
131 	char copyright_file_id		[ISODCL(703, 739)]; /* 7.5 dchars */
132 	char abstract_file_id		[ISODCL(740, 776)]; /* 7.5 dchars */
133 	char bibliographic_file_id	[ISODCL(777, 813)]; /* 7.5 dchars */
134 	char creation_date		[ISODCL(814, 830)]; /* 8.4.26.1 */
135 	char modification_date		[ISODCL(831, 847)]; /* 8.4.26.1 */
136 	char expiration_date		[ISODCL(848, 864)]; /* 8.4.26.1 */
137 	char effective_date		[ISODCL(865, 881)]; /* 8.4.26.1 */
138 	char file_structure_version	[ISODCL(882, 882)]; /* 711 */
139 	char unused4			[ISODCL(883, 883)];
140 	char application_data		[ISODCL(884, 1395)];
141 	char unused5			[ISODCL(1396, 2048)];
142 };
143 
144 struct iso_sierra_primary_descriptor {
145 	char unknown1			[ISODCL(1,	8)]; /* 733 */
146 	char type			[ISODCL(9,	9)]; /* 711 */
147 	char id				[ISODCL(10,  14)];
148 	char version			[ISODCL(15,  15)]; /* 711 */
149 	char unused1			[ISODCL(16,  16)];
150 	char system_id			[ISODCL(17,  48)]; /* achars */
151 	char volume_id			[ISODCL(49,  80)]; /* dchars */
152 	char unused2			[ISODCL(81,  88)];
153 	char volume_space_size		[ISODCL(89,  96)]; /* 733 */
154 	char unused3			[ISODCL(97, 128)];
155 	char volume_set_size		[ISODCL(129, 132)]; /* 723 */
156 	char volume_sequence_number	[ISODCL(133, 136)]; /* 723 */
157 	char logical_block_size		[ISODCL(137, 140)]; /* 723 */
158 	char path_table_size		[ISODCL(141, 148)]; /* 733 */
159 	char type_l_path_table		[ISODCL(149, 152)]; /* 731 */
160 	char opt_type_l_path_table	[ISODCL(153, 156)]; /* 731 */
161 	char unknown2			[ISODCL(157, 160)]; /* 731 */
162 	char unknown3			[ISODCL(161, 164)]; /* 731 */
163 	char type_m_path_table		[ISODCL(165, 168)]; /* 732 */
164 	char opt_type_m_path_table	[ISODCL(169, 172)]; /* 732 */
165 	char unknown4			[ISODCL(173, 176)]; /* 732 */
166 	char unknown5			[ISODCL(177, 180)]; /* 732 */
167 	char root_directory_record	[ISODCL(181, 214)]; /* 9.1 */
168 	char volume_set_id		[ISODCL(215, 342)]; /* dchars */
169 	char publisher_id		[ISODCL(343, 470)]; /* achars */
170 	char preparer_id		[ISODCL(471, 598)]; /* achars */
171 	char application_id		[ISODCL(599, 726)]; /* achars */
172 	char copyright_id		[ISODCL(727, 790)]; /* achars */
173 	char creation_date		[ISODCL(791, 806)]; /* ? */
174 	char modification_date		[ISODCL(807, 822)]; /* ? */
175 	char expiration_date		[ISODCL(823, 838)]; /* ? */
176 	char effective_date		[ISODCL(839, 854)]; /* ? */
177 	char file_structure_version	[ISODCL(855, 855)]; /* 711 */
178 	char unused4			[ISODCL(856, 2048)];
179 };
180 
181 struct iso_directory_record {
182 	uchar_t length			[ISODCL(1, 1)]; /* 711 */
183 	uchar_t ext_attr_length		[ISODCL(2, 2)]; /* 711 */
184 	uchar_t extent			[ISODCL(3, 10)]; /* 733 */
185 	uchar_t size			[ISODCL(11, 18)]; /* 733 */
186 	char date			[ISODCL(19, 25)]; /* 7 by 711 */
187 	uchar_t flags			[ISODCL(26, 26)];
188 	char file_unit_size		[ISODCL(27, 27)]; /* 711 */
189 	char interleave			[ISODCL(28, 28)]; /* 711 */
190 	char volume_sequence_number	[ISODCL(29, 32)]; /* 723 */
191 	uchar_t name_len			[ISODCL(33, 33)]; /* 711 */
192 	char name			[1];			/* XXX */
193 } __packed;
194 /*
195  * can't take sizeof(iso_directory_record), because of possible alignment
196  * of the last entry (34 instead of 33)
197  */
198 #define	ISO_DIRECTORY_RECORD_SIZE	33
199 
200 struct iso_extended_attributes {
201 	uchar_t owner			[ISODCL(1, 4)]; /* 723 */
202 	uchar_t group			[ISODCL(5, 8)]; /* 723 */
203 	uchar_t perm			[ISODCL(9, 10)]; /* 9.5.3 */
204 	char ctime			[ISODCL(11, 27)]; /* 8.4.26.1 */
205 	char mtime			[ISODCL(28, 44)]; /* 8.4.26.1 */
206 	char xtime			[ISODCL(45, 61)]; /* 8.4.26.1 */
207 	char ftime			[ISODCL(62, 78)]; /* 8.4.26.1 */
208 	char recfmt			[ISODCL(79, 79)]; /* 711 */
209 	char recattr			[ISODCL(80, 80)]; /* 711 */
210 	uchar_t reclen			[ISODCL(81, 84)]; /* 723 */
211 	char system_id			[ISODCL(85, 116)]; /* achars */
212 	char system_use			[ISODCL(117, 180)];
213 	char version			[ISODCL(181, 181)]; /* 711 */
214 	char len_esc			[ISODCL(182, 182)]; /* 711 */
215 	char reserved			[ISODCL(183, 246)];
216 	uchar_t len_au			[ISODCL(247, 250)]; /* 723 */
217 };
218 
219 #ifdef _KERNEL
220 
221 /* CD-ROM Format type */
222 enum ISO_FTYPE	{
223 	ISO_FTYPE_DEFAULT,
224 	ISO_FTYPE_9660,
225 	ISO_FTYPE_RRIP,
226 	ISO_FTYPE_JOLIET,
227 	ISO_FTYPE_ECMA,
228 	ISO_FTYPE_HIGH_SIERRA
229 };
230 
231 #ifndef	ISOFSMNT_ROOT
232 #define	ISOFSMNT_ROOT	0
233 #endif
234 
235 /*
236  * When ino_t becomes 64-bit, we can remove this definition in favor of ino_t.
237  */
238 typedef __uint64_t cd_ino_t;
239 
240 struct iso_mnt {
241 	uint64_t im_flags;
242 
243 	struct mount *im_mountp;
244 	struct cdev *im_dev;
245 	struct vnode *im_devvp;
246 
247 	struct g_consumer *im_cp;
248 	struct bufobj *im_bo;
249 
250 	int logical_block_size;
251 	int im_bshift;
252 	int im_bmask;
253 
254 	int volume_space_size;
255 
256 	char root[ISODCL(157, 190)];
257 	int root_extent;
258 	int root_size;
259 	enum ISO_FTYPE	iso_ftype;
260 
261 	int rr_skip;
262 	int rr_skip0;
263 
264 	int joliet_level;
265 
266 	void *im_d2l;
267 	void *im_l2d;
268 };
269 
270 struct ifid {
271 	ushort_t	ifid_len;
272 	ushort_t	ifid_pad;
273 	cd_ino_t	ifid_ino;
274 	long		ifid_start;
275 };
276 
277 #define	VFSTOISOFS(mp)	((struct iso_mnt *)((mp)->mnt_data))
278 
279 #define	blkoff(imp, loc)	((loc) & (imp)->im_bmask)
280 #define	lblktosize(imp, blk)	((blk) << (imp)->im_bshift)
281 #define	lblkno(imp, loc)	((loc) >> (imp)->im_bshift)
282 #define	blksize(imp, ip, lbn)	((imp)->logical_block_size)
283 
284 int cd9660_vget_internal(struct mount *, cd_ino_t, int, struct vnode **, int,
285     struct iso_directory_record *);
286 #define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \
287 				size_t, struct proc *))eopnotsupp)
288 
289 extern struct vop_vector cd9660_vnodeops;
290 extern struct vop_vector cd9660_fifoops;
291 
292 int isochar(uchar_t *, uchar_t *, int, ushort_t *, int *, int, void *);
293 int isofncmp(uchar_t *, int, uchar_t *, int, int, int, void *, void *);
294 void isofntrans(uchar_t *, int, uchar_t *, ushort_t *, int, int, int, int, void *);
295 cd_ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
296 ushort_t sgetrune(const char *, size_t, char const **, int, void *);
297 
298 #endif /* _KERNEL */
299 
300 /*
301  * The isonum_xxx functions are inlined anyway, and could come handy even
302  * outside the kernel.  Thus we don't hide them here.
303  */
304 
305 /*
306  * 7xy
307  *  x -> 1 = 8 bits, 2 = 16 bits, 3 = 32 bits
308  *   y -> 1 = little-endian, 2 = big-endian, 3 = both (le then be)
309  */
310 
311 static __inline uint8_t
isonum_711(const unsigned char * p)312 isonum_711(const unsigned char *p)
313 {
314 
315 	return (p[0]);
316 }
317 
318 static __inline int8_t
isonum_712(const unsigned char * p)319 isonum_712(const unsigned char *p)
320 {
321 
322 	return ((signed char)p[0]);
323 }
324 
325 static __inline uint8_t
isonum_713(const unsigned char * p)326 isonum_713(const unsigned char *p)
327 {
328 
329 	return (p[0]);
330 }
331 
332 static __inline uint16_t
isonum_721(const unsigned char * p)333 isonum_721(const unsigned char *p)
334 {
335 
336 	return (p[0] | p[1] << 8);
337 }
338 
339 static __inline uint16_t
isonum_722(const unsigned char * p)340 isonum_722(const unsigned char *p)
341 {
342 
343 	return (p[1] | p[0] << 8);
344 }
345 
346 static __inline uint16_t
isonum_723(const unsigned char * p)347 isonum_723(const unsigned char *p)
348 {
349 
350 	return (p[0] | p[1] << 8);
351 }
352 
353 static __inline uint32_t
isonum_731(const unsigned char * p)354 isonum_731(const unsigned char *p)
355 {
356 
357 	return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
358 }
359 
360 static __inline uint32_t
isonum_732(const unsigned char * p)361 isonum_732(const unsigned char *p)
362 {
363 
364 	return (p[3] | p[2] << 8 | p[1] << 16 | p[0] << 24);
365 }
366 
367 static __inline uint32_t
isonum_733(const unsigned char * p)368 isonum_733(const unsigned char *p)
369 {
370 
371 	return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
372 }
373 
374 /*
375  * Associated files have a leading '='.
376  */
377 #define	ASSOCCHAR	'='
378 
379 #endif	/* ISO_H */
380