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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / fs / squashfs / squashfs_fs.h
blob611d5f02c8d777cb060e81d239d668626a296d75
1 /* Modified by Broadcom Corp. Portions Copyright (c) Broadcom Corp, 2012. */
2 #ifndef SQUASHFS_FS
3 #define SQUASHFS_FS
4 /*
5 * Squashfs
6 *
7 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
8 * Phillip Lougher <phillip@lougher.demon.co.uk>
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2,
13 * or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 *
24 * squashfs_fs.h
25 */
26
27 #define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
28 #define SQUASHFS_MAJOR 4
29 #define SQUASHFS_MINOR 0
30 #define SQUASHFS_START 0
31
32 /* size of metadata (inode and directory) blocks */
33 #define SQUASHFS_METADATA_SIZE 8192
34 #define SQUASHFS_METADATA_LOG 13
35
36 /* default size of data blocks */
37 #define SQUASHFS_FILE_SIZE 131072
38 #define SQUASHFS_FILE_LOG 17
39
40 #define SQUASHFS_FILE_MAX_SIZE 1048576
41 #define SQUASHFS_FILE_MAX_LOG 20
42
43 /* Max number of uids and gids */
44 #define SQUASHFS_IDS 65536
45
46 /* Max length of filename (not 255) */
47 #define SQUASHFS_NAME_LEN 256
48
49 #define SQUASHFS_INVALID_FRAG (0xffffffffU)
50 #define SQUASHFS_INVALID_XATTR (0xffffffffU)
51 #define SQUASHFS_INVALID_BLK (-1LL)
52
53 /* Filesystem flags */
54 #define SQUASHFS_NOI 0
55 #define SQUASHFS_NOD 1
56 #define SQUASHFS_NOF 3
57 #define SQUASHFS_NO_FRAG 4
58 #define SQUASHFS_ALWAYS_FRAG 5
59 #define SQUASHFS_DUPLICATE 6
60 #define SQUASHFS_EXPORT 7
61 #define SQUASHFS_COMP_OPT 10
62
63 #define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1)
64
65 #define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, \
66 SQUASHFS_NOI)
67
68 #define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, \
69 SQUASHFS_NOD)
70
71 #define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, \
72 SQUASHFS_NOF)
73
74 #define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, \
75 SQUASHFS_NO_FRAG)
76
77 #define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, \
78 SQUASHFS_ALWAYS_FRAG)
79
80 #define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, \
81 SQUASHFS_DUPLICATE)
82
83 #define SQUASHFS_EXPORTABLE(flags) SQUASHFS_BIT(flags, \
84 SQUASHFS_EXPORT)
85
86 #define SQUASHFS_COMP_OPTS(flags) SQUASHFS_BIT(flags, \
87 SQUASHFS_COMP_OPT)
88
89 /* Max number of types and file types */
90 #define SQUASHFS_DIR_TYPE 1
91 #define SQUASHFS_REG_TYPE 2
92 #define SQUASHFS_SYMLINK_TYPE 3
93 #define SQUASHFS_BLKDEV_TYPE 4
94 #define SQUASHFS_CHRDEV_TYPE 5
95 #define SQUASHFS_FIFO_TYPE 6
96 #define SQUASHFS_SOCKET_TYPE 7
97 #define SQUASHFS_LDIR_TYPE 8
98 #define SQUASHFS_LREG_TYPE 9
99 #define SQUASHFS_LSYMLINK_TYPE 10
100 #define SQUASHFS_LBLKDEV_TYPE 11
101 #define SQUASHFS_LCHRDEV_TYPE 12
102 #define SQUASHFS_LFIFO_TYPE 13
103 #define SQUASHFS_LSOCKET_TYPE 14
104
105 /* Xattr types */
106 #define SQUASHFS_XATTR_USER 0
107 #define SQUASHFS_XATTR_TRUSTED 1
108 #define SQUASHFS_XATTR_SECURITY 2
109 #define SQUASHFS_XATTR_VALUE_OOL 256
110 #define SQUASHFS_XATTR_PREFIX_MASK 0xff
111
112 /* Flag whether block is compressed or uncompressed, bit is set if block is
113 * uncompressed */
114 #define SQUASHFS_COMPRESSED_BIT (1 << 15)
115
116 #define SQUASHFS_COMPRESSED_SIZE(B) (((B) & ~SQUASHFS_COMPRESSED_BIT) ? \
117 (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT)
118
119 #define SQUASHFS_COMPRESSED(B) (!((B) & SQUASHFS_COMPRESSED_BIT))
120
121 #define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24)
122
123 #define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) ((B) & \
124 ~SQUASHFS_COMPRESSED_BIT_BLOCK)
125
126 #define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK))
127
128 /*
129 * Inode number ops. Inodes consist of a compressed block number, and an
130 * uncompressed offset within that block
131 */
132 #define SQUASHFS_INODE_BLK(A) ((unsigned int) ((A) >> 16))
133
134 #define SQUASHFS_INODE_OFFSET(A) ((unsigned int) ((A) & 0xffff))
135
136 #define SQUASHFS_MKINODE(A, B) ((long long)(((long long) (A)\
137 << 16) + (B)))
138
139 /* Translate between VFS mode and squashfs mode */
140 #define SQUASHFS_MODE(A) ((A) & 0xfff)
141
142 /* fragment and fragment table defines */
143 #define SQUASHFS_FRAGMENT_BYTES(A) \
144 ((A) * sizeof(struct squashfs_fragment_entry))
145
146 #define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / \
147 SQUASHFS_METADATA_SIZE)
148
149 #define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % \
150 SQUASHFS_METADATA_SIZE)
151
152 #define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + \
153 SQUASHFS_METADATA_SIZE - 1) / \
154 SQUASHFS_METADATA_SIZE)
155
156 #define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) *\
157 sizeof(u64))
158
159 /* inode lookup table defines */
160 #define SQUASHFS_LOOKUP_BYTES(A) ((A) * sizeof(u64))
161
162 #define SQUASHFS_LOOKUP_BLOCK(A) (SQUASHFS_LOOKUP_BYTES(A) / \
163 SQUASHFS_METADATA_SIZE)
164
165 #define SQUASHFS_LOOKUP_BLOCK_OFFSET(A) (SQUASHFS_LOOKUP_BYTES(A) % \
166 SQUASHFS_METADATA_SIZE)
167
168 #define SQUASHFS_LOOKUP_BLOCKS(A) ((SQUASHFS_LOOKUP_BYTES(A) + \
169 SQUASHFS_METADATA_SIZE - 1) / \
170 SQUASHFS_METADATA_SIZE)
171
172 #define SQUASHFS_LOOKUP_BLOCK_BYTES(A) (SQUASHFS_LOOKUP_BLOCKS(A) *\
173 sizeof(u64))
174
175 /* uid/gid lookup table defines */
176 #define SQUASHFS_ID_BYTES(A) ((A) * sizeof(unsigned int))
177
178 #define SQUASHFS_ID_BLOCK(A) (SQUASHFS_ID_BYTES(A) / \
179 SQUASHFS_METADATA_SIZE)
180
181 #define SQUASHFS_ID_BLOCK_OFFSET(A) (SQUASHFS_ID_BYTES(A) % \
182 SQUASHFS_METADATA_SIZE)
183
184 #define SQUASHFS_ID_BLOCKS(A) ((SQUASHFS_ID_BYTES(A) + \
185 SQUASHFS_METADATA_SIZE - 1) / \
186 SQUASHFS_METADATA_SIZE)
187
188 #define SQUASHFS_ID_BLOCK_BYTES(A) (SQUASHFS_ID_BLOCKS(A) *\
189 sizeof(u64))
190 /* xattr id lookup table defines */
191 #define SQUASHFS_XATTR_BYTES(A) ((A) * sizeof(struct squashfs_xattr_id))
192
193 #define SQUASHFS_XATTR_BLOCK(A) (SQUASHFS_XATTR_BYTES(A) / \
194 SQUASHFS_METADATA_SIZE)
195
196 #define SQUASHFS_XATTR_BLOCK_OFFSET(A) (SQUASHFS_XATTR_BYTES(A) % \
197 SQUASHFS_METADATA_SIZE)
198
199 #define SQUASHFS_XATTR_BLOCKS(A) ((SQUASHFS_XATTR_BYTES(A) + \
200 SQUASHFS_METADATA_SIZE - 1) / \
201 SQUASHFS_METADATA_SIZE)
202
203 #define SQUASHFS_XATTR_BLOCK_BYTES(A) (SQUASHFS_XATTR_BLOCKS(A) *\
204 sizeof(u64))
205 #define SQUASHFS_XATTR_BLK(A) ((unsigned int) ((A) >> 16))
206
207 #define SQUASHFS_XATTR_OFFSET(A) ((unsigned int) ((A) & 0xffff))
208
209 /* cached data constants for filesystem */
210 #define SQUASHFS_CACHED_BLKS 8
211
212 #define SQUASHFS_MAX_FILE_SIZE_LOG 64
213
214 #define SQUASHFS_MAX_FILE_SIZE (1LL << \
215 (SQUASHFS_MAX_FILE_SIZE_LOG - 2))
216
217 /* meta index cache */
218 #define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int))
219 #define SQUASHFS_META_ENTRIES 127
220 #define SQUASHFS_META_SLOTS 8
221
222 struct meta_entry {
223 u64 data_block;
224 unsigned int index_block;
225 unsigned short offset;
226 unsigned short pad;
227 };
228
229 struct meta_index {
230 unsigned int inode_number;
231 unsigned int offset;
232 unsigned short entries;
233 unsigned short skip;
234 unsigned short locked;
235 unsigned short pad;
236 struct meta_entry meta_entry[SQUASHFS_META_ENTRIES];
237 };
238
239
240 /*
241 * definitions for structures on disk
242 */
243 #define ZLIB_COMPRESSION 1
244 #define LZMA_COMPRESSION 2
245 #define LZO_COMPRESSION 3
246 #define XZ_COMPRESSION 4
247
248 struct squashfs_super_block {
249 __le32 s_magic;
250 __le32 inodes;
251 __le32 mkfs_time;
252 __le32 block_size;
253 __le32 fragments;
254 __le16 compression;
255 __le16 block_log;
256 __le16 flags;
257 __le16 no_ids;
258 __le16 s_major;
259 __le16 s_minor;
260 __le64 root_inode;
261 __le64 bytes_used;
262 __le64 id_table_start;
263 __le64 xattr_id_table_start;
264 __le64 inode_table_start;
265 __le64 directory_table_start;
266 __le64 fragment_table_start;
267 __le64 lookup_table_start;
268 };
269
270 struct squashfs_dir_index {
271 __le32 index;
272 __le32 start_block;
273 __le32 size;
274 unsigned char name[0];
275 };
276
277 struct squashfs_base_inode {
278 __le16 inode_type;
279 __le16 mode;
280 __le16 uid;
281 __le16 guid;
282 __le32 mtime;
283 __le32 inode_number;
284 };
285
286 struct squashfs_ipc_inode {
287 __le16 inode_type;
288 __le16 mode;
289 __le16 uid;
290 __le16 guid;
291 __le32 mtime;
292 __le32 inode_number;
293 __le32 nlink;
294 };
295
296 struct squashfs_lipc_inode {
297 __le16 inode_type;
298 __le16 mode;
299 __le16 uid;
300 __le16 guid;
301 __le32 mtime;
302 __le32 inode_number;
303 __le32 nlink;
304 __le32 xattr;
305 };
306
307 struct squashfs_dev_inode {
308 __le16 inode_type;
309 __le16 mode;
310 __le16 uid;
311 __le16 guid;
312 __le32 mtime;
313 __le32 inode_number;
314 __le32 nlink;
315 __le32 rdev;
316 };
317
318 struct squashfs_ldev_inode {
319 __le16 inode_type;
320 __le16 mode;
321 __le16 uid;
322 __le16 guid;
323 __le32 mtime;
324 __le32 inode_number;
325 __le32 nlink;
326 __le32 rdev;
327 __le32 xattr;
328 };
329
330 struct squashfs_symlink_inode {
331 __le16 inode_type;
332 __le16 mode;
333 __le16 uid;
334 __le16 guid;
335 __le32 mtime;
336 __le32 inode_number;
337 __le32 nlink;
338 __le32 symlink_size;
339 char symlink[0];
340 };
341
342 struct squashfs_reg_inode {
343 __le16 inode_type;
344 __le16 mode;
345 __le16 uid;
346 __le16 guid;
347 __le32 mtime;
348 __le32 inode_number;
349 __le32 start_block;
350 __le32 fragment;
351 __le32 offset;
352 __le32 file_size;
353 __le16 block_list[0];
354 };
355
356 struct squashfs_lreg_inode {
357 __le16 inode_type;
358 __le16 mode;
359 __le16 uid;
360 __le16 guid;
361 __le32 mtime;
362 __le32 inode_number;
363 __le64 start_block;
364 __le64 file_size;
365 __le64 sparse;
366 __le32 nlink;
367 __le32 fragment;
368 __le32 offset;
369 __le32 xattr;
370 __le16 block_list[0];
371 };
372
373 struct squashfs_dir_inode {
374 __le16 inode_type;
375 __le16 mode;
376 __le16 uid;
377 __le16 guid;
378 __le32 mtime;
379 __le32 inode_number;
380 __le32 start_block;
381 __le32 nlink;
382 __le16 file_size;
383 __le16 offset;
384 __le32 parent_inode;
385 };
386
387 struct squashfs_ldir_inode {
388 __le16 inode_type;
389 __le16 mode;
390 __le16 uid;
391 __le16 guid;
392 __le32 mtime;
393 __le32 inode_number;
394 __le32 nlink;
395 __le32 file_size;
396 __le32 start_block;
397 __le32 parent_inode;
398 __le16 i_count;
399 __le16 offset;
400 __le32 xattr;
401 struct squashfs_dir_index index[0];
402 };
403
404 union squashfs_inode {
405 struct squashfs_base_inode base;
406 struct squashfs_dev_inode dev;
407 struct squashfs_ldev_inode ldev;
408 struct squashfs_symlink_inode symlink;
409 struct squashfs_reg_inode reg;
410 struct squashfs_lreg_inode lreg;
411 struct squashfs_dir_inode dir;
412 struct squashfs_ldir_inode ldir;
413 struct squashfs_ipc_inode ipc;
414 struct squashfs_lipc_inode lipc;
415 };
416
417 struct squashfs_dir_entry {
418 __le16 offset;
419 __le16 inode_number;
420 __le16 type;
421 __le16 size;
422 char name[0];
423 };
424
425 struct squashfs_dir_header {
426 __le32 count;
427 __le32 start_block;
428 __le32 inode_number;
429 };
430
431 struct squashfs_fragment_entry {
432 __le64 start_block;
433 __le32 size;
434 unsigned int unused;
435 };
436
437 struct squashfs_xattr_entry {
438 __le16 type;
439 __le16 size;
440 char data[0];
441 };
442
443 struct squashfs_xattr_val {
444 __le32 vsize;
445 char value[0];
446 };
447
448 struct squashfs_xattr_id {
449 __le64 xattr;
450 __le32 count;
451 __le32 size;
452 };
453
454 struct squashfs_xattr_id_table {
455 __le64 xattr_table_start;
456 __le32 xattr_ids;
457 __le32 unused;
458 };
459
460 #endif
Tomato firmware and modifications.