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Commit | Line | Data |
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3839e657 TT |
1 | /* |
2 | * ext2fs.h --- ext2fs | |
3 | * | |
19c78dc0 TT |
4 | * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. |
5 | * | |
6 | * %Begin-Header% | |
7 | * This file may be redistributed under the terms of the GNU Public | |
8 | * License. | |
9 | * %End-Header% | |
3839e657 TT |
10 | */ |
11 | ||
9abd2ce9 TT |
12 | #ifndef _EXT2FS_EXT2FS_H |
13 | #define _EXT2FS_EXT2FS_H | |
14 | ||
54434927 TT |
15 | #ifdef __GNUC__ |
16 | #define EXT2FS_ATTR(x) __attribute__(x) | |
17 | #else | |
18 | #define EXT2FS_ATTR(x) | |
19 | #endif | |
20 | ||
fa7ef717 TT |
21 | #ifdef __cplusplus |
22 | extern "C" { | |
23 | #endif | |
24 | ||
19c78dc0 TT |
25 | /* |
26 | * Non-GNU C compilers won't necessarily understand inline | |
27 | */ | |
76f875da | 28 | #if (!defined(__GNUC__) && !defined(__WATCOMC__)) |
19c78dc0 TT |
29 | #define NO_INLINE_FUNCS |
30 | #endif | |
31 | ||
3839e657 TT |
32 | /* |
33 | * Where the master copy of the superblock is located, and how big | |
34 | * superblocks are supposed to be. We define SUPERBLOCK_SIZE because | |
35 | * the size of the superblock structure is not necessarily trustworthy | |
36 | * (some versions have the padding set up so that the superblock is | |
37 | * 1032 bytes long). | |
38 | */ | |
39 | #define SUPERBLOCK_OFFSET 1024 | |
40 | #define SUPERBLOCK_SIZE 1024 | |
41 | ||
f3db3566 TT |
42 | /* |
43 | * The last ext2fs revision level that this version of the library is | |
44 | * able to support. | |
45 | */ | |
e5b38a5f | 46 | #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV |
f3db3566 | 47 | |
d40259fd | 48 | #ifdef HAVE_SYS_TYPES_H |
1e3472c5 | 49 | #include <sys/types.h> |
d40259fd TT |
50 | #endif |
51 | ||
3e699064 | 52 | #include <stdio.h> |
5be8dc21 | 53 | #include <stdlib.h> |
a82a5702 | 54 | #include <string.h> |
5953b9de TT |
55 | |
56 | #if EXT2_FLAT_INCLUDES | |
57 | #include "e2_types.h" | |
3e699064 | 58 | #include "ext2_fs.h" |
89dd6570 | 59 | #include "ext3_extents.h" |
5953b9de | 60 | #else |
797f5ef1 | 61 | #include <ext2fs/ext2_types.h> |
3e699064 | 62 | #include <ext2fs/ext2_fs.h> |
89dd6570 | 63 | #include <ext2fs/ext3_extents.h> |
e589f678 | 64 | #endif /* EXT2_FLAT_INCLUDES */ |
50e1e10f | 65 | |
31dbecd4 | 66 | typedef __u32 ext2_ino_t; |
50e1e10f | 67 | typedef __u32 blk_t; |
eac91b35 | 68 | typedef __u64 blk64_t; |
2eb374c9 | 69 | typedef __u32 dgrp_t; |
30fab293 | 70 | typedef __u32 ext2_off_t; |
03673dbb | 71 | typedef __s64 e2_blkcnt_t; |
52783e0c | 72 | typedef __u32 ext2_dirhash_t; |
3839e657 | 73 | |
b5abe6fa TT |
74 | #if EXT2_FLAT_INCLUDES |
75 | #include "com_err.h" | |
76 | #include "ext2_io.h" | |
77 | #include "ext2_err.h" | |
78 | #else | |
7c2d2569 TT |
79 | #include <et/com_err.h> |
80 | #include <ext2fs/ext2_io.h> | |
81 | #include <ext2fs/ext2_err.h> | |
b5abe6fa | 82 | #endif |
3839e657 | 83 | |
4c77fe50 TT |
84 | /* |
85 | * Portability help for Microsoft Visual C++ | |
86 | */ | |
87 | #ifdef _MSC_VER | |
88 | #define EXT2_QSORT_TYPE int __cdecl | |
89 | #else | |
90 | #define EXT2_QSORT_TYPE int | |
91 | #endif | |
92 | ||
f3db3566 TT |
93 | typedef struct struct_ext2_filsys *ext2_filsys; |
94 | ||
1e3472c5 TT |
95 | #define EXT2FS_MARK_ERROR 0 |
96 | #define EXT2FS_UNMARK_ERROR 1 | |
97 | #define EXT2FS_TEST_ERROR 2 | |
f3db3566 | 98 | |
1e3472c5 | 99 | typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; |
1e3472c5 | 100 | typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; |
1e3472c5 | 101 | typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; |
f3db3566 | 102 | |
7f88b043 | 103 | #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) |
067911ae | 104 | |
7f88b043 | 105 | |
19c78dc0 | 106 | /* |
067911ae | 107 | * Badblocks list definitions |
19c78dc0 TT |
108 | */ |
109 | ||
b7a00563 TT |
110 | typedef struct ext2_struct_u32_list *ext2_badblocks_list; |
111 | typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; | |
112 | ||
113 | typedef struct ext2_struct_u32_list *ext2_u32_list; | |
114 | typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; | |
19c78dc0 TT |
115 | |
116 | /* old */ | |
b7a00563 TT |
117 | typedef struct ext2_struct_u32_list *badblocks_list; |
118 | typedef struct ext2_struct_u32_iterate *badblocks_iterate; | |
19c78dc0 TT |
119 | |
120 | #define BADBLOCKS_FLAG_DIRTY 1 | |
121 | ||
122 | /* | |
123 | * ext2_dblist structure and abstractions (see dblist.c) | |
124 | */ | |
125 | struct ext2_db_entry { | |
31dbecd4 | 126 | ext2_ino_t ino; |
19c78dc0 TT |
127 | blk_t blk; |
128 | int blockcnt; | |
129 | }; | |
130 | ||
131 | typedef struct ext2_struct_dblist *ext2_dblist; | |
132 | ||
133 | #define DBLIST_ABORT 1 | |
134 | ||
30fab293 TT |
135 | /* |
136 | * ext2_fileio definitions | |
137 | */ | |
138 | ||
139 | #define EXT2_FILE_WRITE 0x0001 | |
140 | #define EXT2_FILE_CREATE 0x0002 | |
141 | ||
142 | #define EXT2_FILE_MASK 0x00FF | |
143 | ||
144 | #define EXT2_FILE_BUF_DIRTY 0x4000 | |
145 | #define EXT2_FILE_BUF_VALID 0x2000 | |
146 | ||
147 | typedef struct ext2_file *ext2_file_t; | |
148 | ||
149 | #define EXT2_SEEK_SET 0 | |
150 | #define EXT2_SEEK_CUR 1 | |
151 | #define EXT2_SEEK_END 2 | |
152 | ||
3839e657 | 153 | /* |
a112847b | 154 | * Flags for the ext2_filsys structure and for ext2fs_open() |
3839e657 | 155 | */ |
19c78dc0 TT |
156 | #define EXT2_FLAG_RW 0x01 |
157 | #define EXT2_FLAG_CHANGED 0x02 | |
158 | #define EXT2_FLAG_DIRTY 0x04 | |
159 | #define EXT2_FLAG_VALID 0x08 | |
160 | #define EXT2_FLAG_IB_DIRTY 0x10 | |
161 | #define EXT2_FLAG_BB_DIRTY 0x20 | |
5c576477 TT |
162 | #define EXT2_FLAG_SWAP_BYTES 0x40 |
163 | #define EXT2_FLAG_SWAP_BYTES_READ 0x80 | |
164 | #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 | |
165 | #define EXT2_FLAG_MASTER_SB_ONLY 0x200 | |
19c78dc0 | 166 | #define EXT2_FLAG_FORCE 0x400 |
43ec8734 | 167 | #define EXT2_FLAG_SUPER_ONLY 0x800 |
a112847b | 168 | #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 |
a78926ef | 169 | #define EXT2_FLAG_IMAGE_FILE 0x2000 |
39c47ce6 | 170 | #define EXT2_FLAG_EXCLUSIVE 0x4000 |
cf8272e1 | 171 | #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 |
3839e657 | 172 | |
7f88b043 TT |
173 | /* |
174 | * Special flag in the ext2 inode i_flag field that means that this is | |
175 | * a new inode. (So that ext2_write_inode() can clear extra fields.) | |
176 | */ | |
177 | #define EXT2_NEW_INODE_FL 0x80000000 | |
178 | ||
4e246704 TT |
179 | /* |
180 | * Flags for mkjournal | |
181 | * | |
182 | * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock | |
183 | */ | |
184 | #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 | |
185 | ||
3839e657 | 186 | struct struct_ext2_filsys { |
4cbe8af4 | 187 | errcode_t magic; |
3839e657 TT |
188 | io_channel io; |
189 | int flags; | |
190 | char * device_name; | |
191 | struct ext2_super_block * super; | |
54434927 | 192 | unsigned int blocksize; |
3839e657 | 193 | int fragsize; |
2eb374c9 | 194 | dgrp_t group_desc_count; |
3839e657 TT |
195 | unsigned long desc_blocks; |
196 | struct ext2_group_desc * group_desc; | |
197 | int inode_blocks_per_group; | |
f3db3566 TT |
198 | ext2fs_inode_bitmap inode_map; |
199 | ext2fs_block_bitmap block_map; | |
31dbecd4 TT |
200 | errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); |
201 | errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); | |
3839e657 | 202 | errcode_t (*write_bitmaps)(ext2_filsys fs); |
31dbecd4 | 203 | errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, |
1e3472c5 | 204 | struct ext2_inode *inode); |
31dbecd4 | 205 | errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, |
1e3472c5 | 206 | struct ext2_inode *inode); |
b7a00563 | 207 | ext2_badblocks_list badblocks; |
19c78dc0 | 208 | ext2_dblist dblist; |
a29f4d30 | 209 | __u32 stride; /* for mke2fs */ |
c180ac86 | 210 | struct ext2_super_block * orig_super; |
a78926ef | 211 | struct ext2_image_hdr * image_header; |
6a525069 | 212 | __u32 umask; |
9b9a780f | 213 | time_t now; |
19c78dc0 TT |
214 | /* |
215 | * Reserved for future expansion | |
216 | */ | |
32138187 | 217 | __u32 reserved[7]; |
3839e657 TT |
218 | |
219 | /* | |
a29f4d30 | 220 | * Reserved for the use of the calling application. |
3839e657 | 221 | */ |
b5abe6fa | 222 | void * priv_data; |
a29f4d30 TT |
223 | |
224 | /* | |
225 | * Inode cache | |
226 | */ | |
227 | struct ext2_inode_cache *icache; | |
1ad54a94 | 228 | io_channel image_io; |
3839e657 TT |
229 | }; |
230 | ||
5953b9de TT |
231 | #if EXT2_FLAT_INCLUDES |
232 | #include "e2_bitops.h" | |
233 | #else | |
7c2d2569 | 234 | #include <ext2fs/bitops.h> |
5953b9de | 235 | #endif |
d40259fd | 236 | |
3839e657 TT |
237 | /* |
238 | * Return flags for the block iterator functions | |
239 | */ | |
240 | #define BLOCK_CHANGED 1 | |
241 | #define BLOCK_ABORT 2 | |
242 | #define BLOCK_ERROR 4 | |
243 | ||
244 | /* | |
245 | * Block interate flags | |
50e1e10f TT |
246 | * |
247 | * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator | |
248 | * function should be called on blocks where the block number is zero. | |
249 | * This is used by ext2fs_expand_dir() to be able to add a new block | |
250 | * to an inode. It can also be used for programs that want to be able | |
251 | * to deal with files that contain "holes". | |
252 | * | |
7447921d TT |
253 | * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for |
254 | * the indirect, doubly indirect, etc. blocks should be called after | |
255 | * all of the blocks containined in the indirect blocks are processed. | |
50e1e10f TT |
256 | * This is useful if you are going to be deallocating blocks from an |
257 | * inode. | |
1e3472c5 TT |
258 | * |
259 | * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be | |
260 | * called for data blocks only. | |
674a4ee1 | 261 | * |
357d1863 TT |
262 | * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not |
263 | * modify returned block number. | |
264 | * | |
674a4ee1 | 265 | * BLOCK_FLAG_NO_LARGE is for internal use only. It informs |
36a43d67 | 266 | * ext2fs_block_iterate2 that large files won't be accepted. |
3839e657 TT |
267 | */ |
268 | #define BLOCK_FLAG_APPEND 1 | |
50e1e10f | 269 | #define BLOCK_FLAG_HOLE 1 |
3839e657 | 270 | #define BLOCK_FLAG_DEPTH_TRAVERSE 2 |
1e3472c5 | 271 | #define BLOCK_FLAG_DATA_ONLY 4 |
357d1863 | 272 | #define BLOCK_FLAG_READ_ONLY 8 |
1e3472c5 | 273 | |
674a4ee1 TT |
274 | #define BLOCK_FLAG_NO_LARGE 0x1000 |
275 | ||
1e3472c5 TT |
276 | /* |
277 | * Magic "block count" return values for the block iterator function. | |
278 | */ | |
279 | #define BLOCK_COUNT_IND (-1) | |
280 | #define BLOCK_COUNT_DIND (-2) | |
281 | #define BLOCK_COUNT_TIND (-3) | |
282 | #define BLOCK_COUNT_TRANSLATOR (-4) | |
3839e657 | 283 | |
4a31c48b | 284 | #if 0 |
1e1da29f TT |
285 | /* |
286 | * Flags for ext2fs_move_blocks | |
287 | */ | |
288 | #define EXT2_BMOVE_GET_DBLIST 0x0001 | |
36f21439 | 289 | #define EXT2_BMOVE_DEBUG 0x0002 |
4a31c48b | 290 | #endif |
1e1da29f | 291 | |
3eb07f64 TT |
292 | /* |
293 | * Generic (non-filesystem layout specific) extents structure | |
294 | */ | |
295 | ||
296 | #define EXT2_EXTENT_FLAGS_LEAF 0x0001 | |
297 | #define EXT2_EXTENT_FLAGS_UNINIT 0x0002 | |
298 | #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 | |
299 | ||
300 | struct ext2fs_extent { | |
301 | blk64_t e_pblk; /* first physical block */ | |
302 | blk64_t e_lblk; /* first logical block extent covers */ | |
303 | __u32 e_len; /* number of blocks covered by extent */ | |
304 | __u32 e_flags; /* extent flags */ | |
305 | }; | |
306 | ||
307 | typedef struct ext2_extent_handle *ext2_extent_handle_t; | |
308 | typedef struct ext2_extent_path *ext2_extent_path_t; | |
309 | ||
310 | /* | |
311 | * Flags used by ext2fs_extent_get() | |
312 | */ | |
313 | #define EXT2_EXTENT_CURRENT 0x0000 | |
314 | #define EXT2_EXTENT_MOVE_MASK 0x000F | |
315 | #define EXT2_EXTENT_ROOT 0x0001 | |
316 | #define EXT2_EXTENT_LAST_LEAF 0x0002 | |
317 | #define EXT2_EXTENT_FIRST_SIB 0x0003 | |
318 | #define EXT2_EXTENT_LAST_SIB 0x0004 | |
319 | #define EXT2_EXTENT_NEXT_SIB 0x0005 | |
320 | #define EXT2_EXTENT_PREV_SIB 0x0006 | |
321 | #define EXT2_EXTENT_NEXT_LEAF 0x0007 | |
322 | #define EXT2_EXTENT_PREV_LEAF 0x0008 | |
323 | #define EXT2_EXTENT_NEXT 0x0009 | |
324 | #define EXT2_EXTENT_PREV 0x000A | |
325 | #define EXT2_EXTENT_UP 0x000B | |
326 | #define EXT2_EXTENT_DOWN 0x000C | |
327 | #define EXT2_EXTENT_DOWN_AND_LAST 0x000D | |
328 | ||
329 | /* | |
330 | * Flags used by ext2fs_extent_insert() | |
331 | */ | |
332 | ||
333 | #define EXT2_EXTENT_INSERT_AFTER 0x0001 | |
334 | ||
335 | /* | |
336 | * Data structure returned by ext2fs_extent_get_info() | |
337 | */ | |
338 | struct ext2_extent_info { | |
339 | int curr_entry; | |
340 | int curr_level; | |
341 | int num_entries; | |
342 | int max_entries; | |
343 | int max_depth; | |
344 | int bytes_avail; | |
345 | blk64_t max_lblk; | |
346 | blk64_t max_pblk; | |
347 | __u32 max_len; | |
348 | __u32 max_uninit_len; | |
349 | }; | |
350 | ||
f9190c8a TT |
351 | /* |
352 | * Flags for directory block reading and writing functions | |
353 | */ | |
354 | #define EXT2_DIRBLOCK_V2_STRUCT 0x0001 | |
355 | ||
3839e657 TT |
356 | /* |
357 | * Return flags for the directory iterator functions | |
358 | */ | |
359 | #define DIRENT_CHANGED 1 | |
360 | #define DIRENT_ABORT 2 | |
361 | #define DIRENT_ERROR 3 | |
362 | ||
363 | /* | |
364 | * Directory iterator flags | |
365 | */ | |
366 | ||
367 | #define DIRENT_FLAG_INCLUDE_EMPTY 1 | |
8bd0c959 | 368 | #define DIRENT_FLAG_INCLUDE_REMOVED 2 |
19c78dc0 TT |
369 | |
370 | #define DIRENT_DOT_FILE 1 | |
371 | #define DIRENT_DOT_DOT_FILE 2 | |
372 | #define DIRENT_OTHER_FILE 3 | |
8bd0c959 | 373 | #define DIRENT_DELETED_FILE 4 |
19c78dc0 | 374 | |
3839e657 TT |
375 | /* |
376 | * Inode scan definitions | |
377 | */ | |
f3db3566 TT |
378 | typedef struct ext2_struct_inode_scan *ext2_inode_scan; |
379 | ||
19c78dc0 TT |
380 | /* |
381 | * ext2fs_scan flags | |
382 | */ | |
383 | #define EXT2_SF_CHK_BADBLOCKS 0x0001 | |
384 | #define EXT2_SF_BAD_INODE_BLK 0x0002 | |
385 | #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 | |
386 | #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 | |
f5fa2007 | 387 | #define EXT2_SF_DO_LAZY 0x0010 |
3839e657 | 388 | |
50e1e10f TT |
389 | /* |
390 | * ext2fs_check_if_mounted flags | |
391 | */ | |
392 | #define EXT2_MF_MOUNTED 1 | |
393 | #define EXT2_MF_ISROOT 2 | |
19c78dc0 | 394 | #define EXT2_MF_READONLY 4 |
07cefe7a | 395 | #define EXT2_MF_SWAP 8 |
2fa8f37f | 396 | #define EXT2_MF_BUSY 16 |
50e1e10f TT |
397 | |
398 | /* | |
399 | * Ext2/linux mode flags. We define them here so that we don't need | |
400 | * to depend on the OS's sys/stat.h, since we may be compiling on a | |
401 | * non-Linux system. | |
402 | */ | |
403 | #define LINUX_S_IFMT 00170000 | |
404 | #define LINUX_S_IFSOCK 0140000 | |
405 | #define LINUX_S_IFLNK 0120000 | |
406 | #define LINUX_S_IFREG 0100000 | |
407 | #define LINUX_S_IFBLK 0060000 | |
408 | #define LINUX_S_IFDIR 0040000 | |
409 | #define LINUX_S_IFCHR 0020000 | |
410 | #define LINUX_S_IFIFO 0010000 | |
411 | #define LINUX_S_ISUID 0004000 | |
412 | #define LINUX_S_ISGID 0002000 | |
413 | #define LINUX_S_ISVTX 0001000 | |
414 | ||
1e3472c5 TT |
415 | #define LINUX_S_IRWXU 00700 |
416 | #define LINUX_S_IRUSR 00400 | |
417 | #define LINUX_S_IWUSR 00200 | |
418 | #define LINUX_S_IXUSR 00100 | |
419 | ||
420 | #define LINUX_S_IRWXG 00070 | |
421 | #define LINUX_S_IRGRP 00040 | |
422 | #define LINUX_S_IWGRP 00020 | |
423 | #define LINUX_S_IXGRP 00010 | |
424 | ||
425 | #define LINUX_S_IRWXO 00007 | |
426 | #define LINUX_S_IROTH 00004 | |
427 | #define LINUX_S_IWOTH 00002 | |
428 | #define LINUX_S_IXOTH 00001 | |
429 | ||
50e1e10f TT |
430 | #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) |
431 | #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) | |
432 | #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) | |
433 | #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) | |
434 | #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) | |
435 | #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) | |
436 | #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) | |
437 | ||
819157db TT |
438 | /* |
439 | * ext2 size of an inode | |
440 | */ | |
441 | #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) | |
442 | ||
19c78dc0 TT |
443 | /* |
444 | * ext2_icount_t abstraction | |
445 | */ | |
446 | #define EXT2_ICOUNT_OPT_INCREMENT 0x01 | |
447 | ||
448 | typedef struct ext2_icount *ext2_icount_t; | |
449 | ||
30fab293 TT |
450 | /* |
451 | * Flags for ext2fs_bmap | |
452 | */ | |
1d667534 TT |
453 | #define BMAP_ALLOC 0x0001 |
454 | #define BMAP_SET 0x0002 | |
30fab293 | 455 | |
72ed1264 TT |
456 | /* |
457 | * Flags for imager.c functions | |
458 | */ | |
459 | #define IMAGER_FLAG_INODEMAP 1 | |
460 | #define IMAGER_FLAG_SPARSEWRITE 2 | |
461 | ||
f3db3566 TT |
462 | /* |
463 | * For checking structure magic numbers... | |
464 | */ | |
3839e657 | 465 | |
f3db3566 TT |
466 | #define EXT2_CHECK_MAGIC(struct, code) \ |
467 | if ((struct)->magic != (code)) return (code) | |
1e3472c5 TT |
468 | |
469 | ||
470 | /* | |
e5b38a5f | 471 | * For ext2 compression support |
1e3472c5 | 472 | */ |
5d38ef1d | 473 | #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) |
5a63dd28 TT |
474 | #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) |
475 | ||
521e3685 | 476 | /* |
426d734f | 477 | * Features supported by this version of the library |
521e3685 | 478 | */ |
3a5f8eaa TT |
479 | #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ |
480 | EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ | |
342d847d | 481 | EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ |
d323f8fb | 482 | EXT2_FEATURE_COMPAT_RESIZE_INODE|\ |
52783e0c | 483 | EXT2_FEATURE_COMPAT_DIR_INDEX|\ |
f5fa2007 | 484 | EXT2_FEATURE_COMPAT_LAZY_BG|\ |
342d847d | 485 | EXT2_FEATURE_COMPAT_EXT_ATTR) |
2fe1efe2 | 486 | |
5a63dd28 TT |
487 | /* This #ifdef is temporary until compression is fully supported */ |
488 | #ifdef ENABLE_COMPRESSION | |
e589f678 TT |
489 | #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL |
490 | /* If the below warning bugs you, then have | |
491 | `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your | |
492 | environment at configure time. */ | |
cdaf1fa7 | 493 | #warning "Compression support is experimental" |
e589f678 | 494 | #endif |
5a63dd28 | 495 | #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ |
ab146766 | 496 | EXT2_FEATURE_INCOMPAT_COMPRESSION|\ |
a112847b | 497 | EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ |
c046ac7f | 498 | EXT2_FEATURE_INCOMPAT_META_BG|\ |
c2d4300b JS |
499 | EXT3_FEATURE_INCOMPAT_RECOVER|\ |
500 | EXT4_FEATURE_INCOMPAT_FLEX_BG) | |
5a63dd28 | 501 | #else |
ab146766 | 502 | #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ |
a112847b | 503 | EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ |
c046ac7f | 504 | EXT2_FEATURE_INCOMPAT_META_BG|\ |
c2d4300b JS |
505 | EXT3_FEATURE_INCOMPAT_RECOVER|\ |
506 | EXT4_FEATURE_INCOMPAT_FLEX_BG) | |
5a63dd28 | 507 | #endif |
674a4ee1 TT |
508 | #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ |
509 | EXT2_FEATURE_RO_COMPAT_LARGE_FILE) | |
cf8272e1 TT |
510 | |
511 | /* | |
512 | * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed | |
513 | * to ext2fs_openfs() | |
514 | */ | |
515 | #define EXT2_LIB_SOFTSUPP_INCOMPAT (EXT3_FEATURE_INCOMPAT_EXTENTS) | |
516 | #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ | |
517 | EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ | |
518 | EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ | |
519 | EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) | |
520 | ||
3839e657 TT |
521 | /* |
522 | * function prototypes | |
523 | */ | |
524 | ||
525 | /* alloc.c */ | |
31dbecd4 TT |
526 | extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, |
527 | ext2fs_inode_bitmap map, ext2_ino_t *ret); | |
3839e657 | 528 | extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, |
f3db3566 | 529 | ext2fs_block_bitmap map, blk_t *ret); |
3839e657 | 530 | extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, |
f3db3566 TT |
531 | blk_t finish, int num, |
532 | ext2fs_block_bitmap map, | |
3839e657 | 533 | blk_t *ret); |
30fab293 TT |
534 | extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, |
535 | char *block_buf, blk_t *ret); | |
3839e657 | 536 | |
ef344e13 TT |
537 | /* alloc_sb.c */ |
538 | extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, | |
539 | dgrp_t group, | |
540 | ext2fs_block_bitmap bmap); | |
541 | ||
8bd0c959 TT |
542 | /* alloc_stats.c */ |
543 | void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); | |
7f961d42 TT |
544 | void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, |
545 | int inuse, int isdir); | |
8bd0c959 TT |
546 | void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); |
547 | ||
1e1da29f TT |
548 | /* alloc_tables.c */ |
549 | extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); | |
2eb374c9 | 550 | extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, |
1e1da29f | 551 | ext2fs_block_bitmap bmap); |
19c78dc0 | 552 | |
3839e657 | 553 | /* badblocks.c */ |
b7a00563 TT |
554 | extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); |
555 | extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); | |
54434927 | 556 | extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); |
b7a00563 TT |
557 | extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); |
558 | extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, | |
559 | ext2_u32_iterate *ret); | |
560 | extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); | |
561 | extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); | |
562 | extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); | |
563 | extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); | |
564 | ||
19c78dc0 TT |
565 | extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, |
566 | int size); | |
19c78dc0 TT |
567 | extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, |
568 | blk_t blk); | |
569 | extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, | |
570 | blk_t blk); | |
7d7bdd57 TT |
571 | extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); |
572 | extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); | |
19c78dc0 TT |
573 | extern errcode_t |
574 | ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, | |
575 | ext2_badblocks_iterate *ret); | |
576 | extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, | |
577 | blk_t *blk); | |
578 | extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); | |
a29f4d30 TT |
579 | extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, |
580 | ext2_badblocks_list *dest); | |
57dca854 TT |
581 | extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, |
582 | ext2_badblocks_list bb2); | |
220c0040 | 583 | extern int ext2fs_u32_list_count(ext2_u32_list bb); |
19c78dc0 TT |
584 | |
585 | /* bb_compat */ | |
3839e657 | 586 | extern errcode_t badblocks_list_create(badblocks_list *ret, int size); |
3839e657 TT |
587 | extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); |
588 | extern int badblocks_list_test(badblocks_list bb, blk_t blk); | |
589 | extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, | |
590 | badblocks_iterate *ret); | |
591 | extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); | |
592 | extern void badblocks_list_iterate_end(badblocks_iterate iter); | |
a29f4d30 | 593 | extern void badblocks_list_free(badblocks_list bb); |
3839e657 TT |
594 | |
595 | /* bb_inode.c */ | |
596 | extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, | |
19c78dc0 | 597 | ext2_badblocks_list bb_list); |
3839e657 TT |
598 | |
599 | /* bitmaps.c */ | |
a0553c9d TT |
600 | extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); |
601 | extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); | |
f1f115a7 TT |
602 | extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, |
603 | ext2fs_generic_bitmap *dest); | |
3839e657 TT |
604 | extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); |
605 | extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); | |
606 | extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); | |
607 | extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); | |
50e1e10f TT |
608 | extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, |
609 | const char *descr, | |
610 | ext2fs_block_bitmap *ret); | |
611 | extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, | |
612 | const char *descr, | |
613 | ext2fs_inode_bitmap *ret); | |
614 | extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, | |
31dbecd4 | 615 | ext2_ino_t end, ext2_ino_t *oend); |
50e1e10f TT |
616 | extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, |
617 | blk_t end, blk_t *oend); | |
618 | extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); | |
619 | extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); | |
3839e657 TT |
620 | extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); |
621 | extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); | |
50448d3d TT |
622 | extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, |
623 | ext2fs_inode_bitmap bmap); | |
624 | extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, | |
625 | ext2fs_block_bitmap bmap); | |
626 | extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, | |
627 | ext2fs_block_bitmap bm2); | |
628 | extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, | |
629 | ext2fs_inode_bitmap bm2); | |
f1f115a7 TT |
630 | extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, |
631 | ext2_ino_t start, unsigned int num, | |
632 | void *in); | |
633 | extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, | |
634 | ext2_ino_t start, unsigned int num, | |
635 | void *out); | |
636 | extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, | |
637 | blk_t start, unsigned int num, | |
638 | void *in); | |
639 | extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, | |
640 | blk_t start, unsigned int num, | |
641 | void *out); | |
50448d3d | 642 | |
3839e657 TT |
643 | |
644 | /* block.c */ | |
645 | extern errcode_t ext2fs_block_iterate(ext2_filsys fs, | |
31dbecd4 | 646 | ext2_ino_t ino, |
3839e657 TT |
647 | int flags, |
648 | char *block_buf, | |
649 | int (*func)(ext2_filsys fs, | |
650 | blk_t *blocknr, | |
651 | int blockcnt, | |
b5abe6fa TT |
652 | void *priv_data), |
653 | void *priv_data); | |
19c78dc0 | 654 | errcode_t ext2fs_block_iterate2(ext2_filsys fs, |
31dbecd4 | 655 | ext2_ino_t ino, |
674a4ee1 TT |
656 | int flags, |
657 | char *block_buf, | |
658 | int (*func)(ext2_filsys fs, | |
659 | blk_t *blocknr, | |
03673dbb | 660 | e2_blkcnt_t blockcnt, |
674a4ee1 TT |
661 | blk_t ref_blk, |
662 | int ref_offset, | |
663 | void *priv_data), | |
664 | void *priv_data); | |
19c78dc0 | 665 | |
30fab293 | 666 | /* bmap.c */ |
31dbecd4 | 667 | extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, |
30fab293 TT |
668 | struct ext2_inode *inode, |
669 | char *block_buf, int bmap_flags, | |
670 | blk_t block, blk_t *phys_blk); | |
671 | ||
672 | ||
4a31c48b | 673 | #if 0 |
1e1da29f TT |
674 | /* bmove.c */ |
675 | extern errcode_t ext2fs_move_blocks(ext2_filsys fs, | |
676 | ext2fs_block_bitmap reserve, | |
9941fb73 | 677 | ext2fs_block_bitmap alloc_map, |
1e1da29f | 678 | int flags); |
4a31c48b | 679 | #endif |
1e1da29f | 680 | |
f3db3566 TT |
681 | /* check_desc.c */ |
682 | extern errcode_t ext2fs_check_desc(ext2_filsys fs); | |
683 | ||
3839e657 TT |
684 | /* closefs.c */ |
685 | extern errcode_t ext2fs_close(ext2_filsys fs); | |
686 | extern errcode_t ext2fs_flush(ext2_filsys fs); | |
1b4cd9c7 | 687 | extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); |
ef344e13 TT |
688 | extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, |
689 | dgrp_t group, | |
690 | blk_t *ret_super_blk, | |
691 | blk_t *ret_old_desc_blk, | |
692 | blk_t *ret_new_desc_blk, | |
693 | int *ret_meta_bg); | |
1b4cd9c7 | 694 | extern void ext2fs_update_dynamic_rev(ext2_filsys fs); |
3839e657 | 695 | |
19c78dc0 TT |
696 | /* dblist.c */ |
697 | ||
31dbecd4 | 698 | extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); |
a29f4d30 | 699 | extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); |
31dbecd4 | 700 | extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, |
a29f4d30 | 701 | blk_t blk, int blockcnt); |
ea1959f0 TT |
702 | extern void ext2fs_dblist_sort(ext2_dblist dblist, |
703 | EXT2_QSORT_TYPE (*sortfunc)(const void *, | |
704 | const void *)); | |
a29f4d30 TT |
705 | extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, |
706 | int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, | |
b5abe6fa TT |
707 | void *priv_data), |
708 | void *priv_data); | |
31dbecd4 | 709 | extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, |
a29f4d30 TT |
710 | blk_t blk, int blockcnt); |
711 | extern errcode_t ext2fs_copy_dblist(ext2_dblist src, | |
712 | ext2_dblist *dest); | |
549860c5 | 713 | extern int ext2fs_dblist_count(ext2_dblist dblist); |
19c78dc0 TT |
714 | |
715 | /* dblist_dir.c */ | |
716 | extern errcode_t | |
717 | ext2fs_dblist_dir_iterate(ext2_dblist dblist, | |
718 | int flags, | |
719 | char *block_buf, | |
31dbecd4 | 720 | int (*func)(ext2_ino_t dir, |
19c78dc0 TT |
721 | int entry, |
722 | struct ext2_dir_entry *dirent, | |
723 | int offset, | |
724 | int blocksize, | |
725 | char *buf, | |
b5abe6fa TT |
726 | void *priv_data), |
727 | void *priv_data); | |
50e1e10f TT |
728 | |
729 | /* dirblock.c */ | |
730 | extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, | |
731 | void *buf); | |
f9190c8a TT |
732 | extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, |
733 | void *buf, int flags); | |
50e1e10f TT |
734 | extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, |
735 | void *buf); | |
f9190c8a TT |
736 | extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, |
737 | void *buf, int flags); | |
50e1e10f | 738 | |
52783e0c TT |
739 | /* dirhash.c */ |
740 | extern errcode_t ext2fs_dirhash(int version, const char *name, int len, | |
b33278c4 | 741 | const __u32 *seed, |
503f9e7f TT |
742 | ext2_dirhash_t *ret_hash, |
743 | ext2_dirhash_t *ret_minor_hash); | |
52783e0c TT |
744 | |
745 | ||
19c78dc0 TT |
746 | /* dir_iterate.c */ |
747 | extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, | |
31dbecd4 | 748 | ext2_ino_t dir, |
19c78dc0 TT |
749 | int flags, |
750 | char *block_buf, | |
751 | int (*func)(struct ext2_dir_entry *dirent, | |
752 | int offset, | |
753 | int blocksize, | |
754 | char *buf, | |
b5abe6fa TT |
755 | void *priv_data), |
756 | void *priv_data); | |
8bd0c959 TT |
757 | extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, |
758 | ext2_ino_t dir, | |
759 | int flags, | |
760 | char *block_buf, | |
761 | int (*func)(ext2_ino_t dir, | |
762 | int entry, | |
763 | struct ext2_dir_entry *dirent, | |
764 | int offset, | |
765 | int blocksize, | |
766 | char *buf, | |
767 | void *priv_data), | |
768 | void *priv_data); | |
19c78dc0 | 769 | |
a29f4d30 TT |
770 | /* dupfs.c */ |
771 | extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); | |
19c78dc0 | 772 | |
3839e657 | 773 | /* expanddir.c */ |
31dbecd4 | 774 | extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); |
3839e657 | 775 | |
342d847d | 776 | /* ext_attr.c */ |
342d847d | 777 | extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); |
0684a4f3 TT |
778 | extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, |
779 | void *buf); | |
780 | extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, | |
781 | char *block_buf, | |
782 | int adjust, __u32 *newcount); | |
783 | ||
3eb07f64 TT |
784 | /* extent.c */ |
785 | extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); | |
786 | extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, | |
787 | ext2_extent_handle_t *handle); | |
788 | extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, | |
789 | int flags, struct ext2fs_extent *extent); | |
790 | extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, | |
791 | struct ext2fs_extent *extent); | |
792 | extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, | |
793 | struct ext2fs_extent *extent); | |
794 | extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); | |
795 | extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, | |
796 | struct ext2_extent_info *info); | |
797 | extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, | |
798 | blk64_t blk); | |
799 | ||
30fab293 | 800 | /* fileio.c */ |
a435ec34 TT |
801 | extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, |
802 | struct ext2_inode *inode, | |
803 | int flags, ext2_file_t *ret); | |
31dbecd4 | 804 | extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, |
30fab293 | 805 | int flags, ext2_file_t *ret); |
79a90bda | 806 | extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); |
30fab293 | 807 | extern errcode_t ext2fs_file_close(ext2_file_t file); |
f12e285f | 808 | extern errcode_t ext2fs_file_flush(ext2_file_t file); |
30fab293 | 809 | extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, |
79a90bda | 810 | unsigned int wanted, unsigned int *got); |
f12e285f | 811 | extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, |
79a90bda | 812 | unsigned int nbytes, unsigned int *written); |
819157db TT |
813 | extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, |
814 | int whence, __u64 *ret_pos); | |
674a4ee1 TT |
815 | extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, |
816 | int whence, ext2_off_t *ret_pos); | |
819157db | 817 | errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); |
79a90bda TT |
818 | extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); |
819 | extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); | |
30fab293 | 820 | |
de23aa1d TT |
821 | /* finddev.c */ |
822 | extern char *ext2fs_find_block_device(dev_t device); | |
823 | ||
4d0f3e17 TT |
824 | /* flushb.c */ |
825 | extern errcode_t ext2fs_sync_device(int fd, int flushb); | |
826 | ||
3839e657 TT |
827 | /* freefs.c */ |
828 | extern void ext2fs_free(ext2_filsys fs); | |
a29f4d30 | 829 | extern void ext2fs_free_dblist(ext2_dblist dblist); |
b7a00563 TT |
830 | extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); |
831 | extern void ext2fs_u32_list_free(ext2_u32_list bb); | |
50e1e10f | 832 | |
a0553c9d TT |
833 | /* gen_bitmap.c */ |
834 | extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); | |
835 | extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, | |
836 | __u32 start, __u32 end, | |
837 | __u32 real_end, | |
838 | const char *descr, char *init_map, | |
839 | ext2fs_generic_bitmap *ret); | |
840 | extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, | |
841 | __u32 end, | |
842 | __u32 real_end, | |
843 | const char *descr, | |
844 | ext2fs_generic_bitmap *ret); | |
845 | extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, | |
846 | ext2fs_generic_bitmap *dest); | |
847 | extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); | |
848 | extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, | |
849 | errcode_t magic, | |
850 | errcode_t neq, | |
851 | ext2_ino_t end, | |
852 | ext2_ino_t *oend); | |
853 | extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); | |
50448d3d TT |
854 | extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, |
855 | __u32 new_end, | |
856 | __u32 new_real_end, | |
857 | ext2fs_generic_bitmap bmap); | |
858 | extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, | |
859 | ext2fs_generic_bitmap bm1, | |
860 | ext2fs_generic_bitmap bm2); | |
f1f115a7 TT |
861 | extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, |
862 | errcode_t magic, | |
863 | __u32 start, __u32 num, | |
864 | void *out); | |
865 | extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, | |
866 | errcode_t magic, | |
867 | __u32 start, __u32 num, | |
868 | void *in); | |
a0553c9d | 869 | |
50e1e10f TT |
870 | /* getsize.c */ |
871 | extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, | |
872 | blk_t *retblocks); | |
3839e657 | 873 | |
93d5c387 TT |
874 | /* getsectsize.c */ |
875 | errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); | |
876 | ||
72ed1264 TT |
877 | /* imager.c */ |
878 | extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); | |
879 | extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); | |
880 | extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); | |
881 | extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); | |
882 | extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); | |
883 | extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); | |
884 | ||
dc8ce346 TT |
885 | /* ind_block.c */ |
886 | errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); | |
887 | errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); | |
888 | ||
3839e657 TT |
889 | /* initialize.c */ |
890 | extern errcode_t ext2fs_initialize(const char *name, int flags, | |
891 | struct ext2_super_block *param, | |
892 | io_manager manager, ext2_filsys *ret_fs); | |
893 | ||
f12e285f TT |
894 | /* icount.c */ |
895 | extern void ext2fs_free_icount(ext2_icount_t icount); | |
1b9d8cb7 TT |
896 | extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, |
897 | int flags, ext2_icount_t *ret); | |
54434927 TT |
898 | extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, |
899 | unsigned int size, | |
f12e285f | 900 | ext2_icount_t hint, ext2_icount_t *ret); |
54434927 TT |
901 | extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, |
902 | unsigned int size, | |
f12e285f TT |
903 | ext2_icount_t *ret); |
904 | extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, | |
905 | __u16 *ret); | |
906 | extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, | |
907 | __u16 *ret); | |
908 | extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, | |
909 | __u16 *ret); | |
910 | extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, | |
911 | __u16 count); | |
912 | extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); | |
913 | errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); | |
914 | ||
3839e657 | 915 | /* inode.c */ |
72ed1264 | 916 | extern errcode_t ext2fs_flush_icache(ext2_filsys fs); |
7331196a TT |
917 | extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, |
918 | ext2_ino_t *ino, | |
919 | struct ext2_inode *inode, | |
920 | int bufsize); | |
3839e657 TT |
921 | extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, |
922 | ext2_inode_scan *ret_scan); | |
923 | extern void ext2fs_close_inode_scan(ext2_inode_scan scan); | |
31dbecd4 | 924 | extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, |
3839e657 | 925 | struct ext2_inode *inode); |
19c78dc0 TT |
926 | extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, |
927 | int group); | |
928 | extern void ext2fs_set_inode_callback | |
929 | (ext2_inode_scan scan, | |
930 | errcode_t (*done_group)(ext2_filsys fs, | |
931 | ext2_inode_scan scan, | |
932 | dgrp_t group, | |
b5abe6fa | 933 | void * priv_data), |
19c78dc0 TT |
934 | void *done_group_data); |
935 | extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, | |
936 | int clear_flags); | |
7331196a TT |
937 | extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, |
938 | struct ext2_inode * inode, | |
939 | int bufsize); | |
31dbecd4 | 940 | extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, |
3839e657 | 941 | struct ext2_inode * inode); |
7331196a TT |
942 | extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, |
943 | struct ext2_inode * inode, | |
944 | int bufsize); | |
31dbecd4 | 945 | extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, |
3839e657 | 946 | struct ext2_inode * inode); |
030970ed TT |
947 | extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, |
948 | struct ext2_inode * inode); | |
31dbecd4 TT |
949 | extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); |
950 | extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); | |
3839e657 | 951 | |
f12e285f TT |
952 | /* inode_io.c */ |
953 | extern io_manager inode_io_manager; | |
546a1ff1 TT |
954 | extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, |
955 | char **name); | |
a435ec34 TT |
956 | extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, |
957 | struct ext2_inode *inode, | |
958 | char **name); | |
f12e285f | 959 | |
50e1e10f TT |
960 | /* ismounted.c */ |
961 | extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); | |
43ec8734 TT |
962 | extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, |
963 | char *mtpt, int mtlen); | |
50e1e10f | 964 | |
3839e657 | 965 | /* namei.c */ |
31dbecd4 TT |
966 | extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, |
967 | int namelen, char *buf, ext2_ino_t *inode); | |
968 | extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, | |
969 | const char *name, ext2_ino_t *inode); | |
970 | errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, | |
971 | const char *name, ext2_ino_t *inode); | |
972 | extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, | |
973 | ext2_ino_t inode, ext2_ino_t *res_inode); | |
1e3472c5 TT |
974 | |
975 | /* native.c */ | |
976 | int ext2fs_native_flag(void); | |
3839e657 TT |
977 | |
978 | /* newdir.c */ | |
31dbecd4 TT |
979 | extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, |
980 | ext2_ino_t parent_ino, char **block); | |
3839e657 TT |
981 | |
982 | /* mkdir.c */ | |
31dbecd4 | 983 | extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, |
3839e657 TT |
984 | const char *name); |
985 | ||
d3cd93ca | 986 | /* mkjournal.c */ |
a112847b TT |
987 | extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, |
988 | __u32 size, int flags, | |
989 | char **ret_jsb); | |
990 | extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, | |
991 | ext2_filsys journal_dev); | |
31a17b36 TT |
992 | extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, |
993 | int flags); | |
56d12367 | 994 | extern int ext2fs_default_journal_size(__u64 blocks); |
d3cd93ca | 995 | |
3839e657 TT |
996 | /* openfs.c */ |
997 | extern errcode_t ext2fs_open(const char *name, int flags, int superblock, | |
54434927 | 998 | unsigned int block_size, io_manager manager, |
3839e657 | 999 | ext2_filsys *ret_fs); |
2e8ca9a2 TT |
1000 | extern errcode_t ext2fs_open2(const char *name, const char *io_options, |
1001 | int flags, int superblock, | |
1002 | unsigned int block_size, io_manager manager, | |
1003 | ext2_filsys *ret_fs); | |
c046ac7f TT |
1004 | extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, |
1005 | dgrp_t i); | |
1ad54a94 TT |
1006 | errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); |
1007 | errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); | |
1008 | errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); | |
3839e657 TT |
1009 | |
1010 | /* get_pathname.c */ | |
31dbecd4 | 1011 | extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, |
3839e657 TT |
1012 | char **name); |
1013 | ||
1014 | /* link.c */ | |
31dbecd4 TT |
1015 | errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, |
1016 | ext2_ino_t ino, int flags); | |
1017 | errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, | |
1018 | ext2_ino_t ino, int flags); | |
3839e657 TT |
1019 | |
1020 | /* read_bb.c */ | |
19c78dc0 TT |
1021 | extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, |
1022 | ext2_badblocks_list *bb_list); | |
3839e657 TT |
1023 | |
1024 | /* read_bb_file.c */ | |
57dca854 TT |
1025 | extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, |
1026 | ext2_badblocks_list *bb_list, | |
50cd7e06 | 1027 | void *priv_data, |
57dca854 TT |
1028 | void (*invalid)(ext2_filsys fs, |
1029 | blk_t blk, | |
1030 | char *badstr, | |
50cd7e06 | 1031 | void *priv_data)); |
3839e657 | 1032 | extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, |
19c78dc0 | 1033 | ext2_badblocks_list *bb_list, |
3839e657 TT |
1034 | void (*invalid)(ext2_filsys fs, |
1035 | blk_t blk)); | |
1036 | ||
d323f8fb TT |
1037 | /* res_gdt.c */ |
1038 | extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); | |
1039 | ||
50e1e10f | 1040 | /* swapfs.c */ |
7331196a TT |
1041 | extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, |
1042 | int has_header); | |
50e1e10f TT |
1043 | extern void ext2fs_swap_super(struct ext2_super_block * super); |
1044 | extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); | |
7331196a TT |
1045 | extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, |
1046 | struct ext2_inode_large *f, int hostorder, | |
1047 | int bufsize); | |
1e3472c5 TT |
1048 | extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, |
1049 | struct ext2_inode *f, int hostorder); | |
1050 | ||
19c78dc0 | 1051 | /* valid_blk.c */ |
521e3685 TT |
1052 | extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); |
1053 | ||
1054 | /* version.c */ | |
1055 | extern int ext2fs_parse_version_string(const char *ver_string); | |
1056 | extern int ext2fs_get_library_version(const char **ver_string, | |
1057 | const char **date_string); | |
50e1e10f | 1058 | |
31dbecd4 TT |
1059 | /* write_bb_file.c */ |
1060 | extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, | |
1061 | unsigned int flags, | |
1062 | FILE *f); | |
1063 | ||
1064 | ||
3839e657 | 1065 | /* inline functions */ |
c4e3d3f3 | 1066 | extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); |
ee01079a | 1067 | extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); |
c4e3d3f3 | 1068 | extern errcode_t ext2fs_free_mem(void *ptr); |
76f875da | 1069 | extern errcode_t ext2fs_resize_mem(unsigned long old_size, |
c4e3d3f3 | 1070 | unsigned long size, void *ptr); |
3839e657 TT |
1071 | extern void ext2fs_mark_super_dirty(ext2_filsys fs); |
1072 | extern void ext2fs_mark_changed(ext2_filsys fs); | |
1073 | extern int ext2fs_test_changed(ext2_filsys fs); | |
1074 | extern void ext2fs_mark_valid(ext2_filsys fs); | |
1075 | extern void ext2fs_unmark_valid(ext2_filsys fs); | |
1076 | extern int ext2fs_test_valid(ext2_filsys fs); | |
1077 | extern void ext2fs_mark_ib_dirty(ext2_filsys fs); | |
1078 | extern void ext2fs_mark_bb_dirty(ext2_filsys fs); | |
1079 | extern int ext2fs_test_ib_dirty(ext2_filsys fs); | |
1080 | extern int ext2fs_test_bb_dirty(ext2_filsys fs); | |
1081 | extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); | |
31dbecd4 | 1082 | extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); |
abf23439 ES |
1083 | extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); |
1084 | extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); | |
0684a4f3 TT |
1085 | extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, |
1086 | struct ext2_inode *inode); | |
69022e02 | 1087 | extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); |
3839e657 TT |
1088 | |
1089 | /* | |
1090 | * The actual inlined functions definitions themselves... | |
1091 | * | |
1092 | * If NO_INLINE_FUNCS is defined, then we won't try to do inline | |
1093 | * functions at all! | |
1094 | */ | |
1095 | #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) | |
1096 | #ifdef INCLUDE_INLINE_FUNCS | |
1097 | #define _INLINE_ extern | |
1098 | #else | |
76f875da | 1099 | #ifdef __GNUC__ |
3839e657 | 1100 | #define _INLINE_ extern __inline__ |
76f875da TT |
1101 | #else /* For Watcom C */ |
1102 | #define _INLINE_ extern inline | |
1103 | #endif | |
3839e657 TT |
1104 | #endif |
1105 | ||
7b4e4534 | 1106 | #ifndef EXT2_CUSTOM_MEMORY_ROUTINES |
68a7f959 | 1107 | #include <string.h> |
7b4e4534 TT |
1108 | /* |
1109 | * Allocate memory | |
1110 | */ | |
c4e3d3f3 | 1111 | _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) |
7b4e4534 | 1112 | { |
2694f319 | 1113 | void *pp; |
c4e3d3f3 | 1114 | |
2694f319 TT |
1115 | pp = malloc(size); |
1116 | if (!pp) | |
291c9049 | 1117 | return EXT2_ET_NO_MEMORY; |
2694f319 | 1118 | memcpy(ptr, &pp, sizeof (pp)); |
7b4e4534 TT |
1119 | return 0; |
1120 | } | |
e5aace90 | 1121 | |
ee01079a TT |
1122 | _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) |
1123 | { | |
1124 | if (count && (-1UL)/count<size) | |
1125 | return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? | |
1126 | return ext2fs_get_mem(count*size, ptr); | |
1127 | } | |
7b4e4534 TT |
1128 | |
1129 | /* | |
1130 | * Free memory | |
1131 | */ | |
c4e3d3f3 | 1132 | _INLINE_ errcode_t ext2fs_free_mem(void *ptr) |
7b4e4534 | 1133 | { |
2694f319 | 1134 | void *p; |
c4e3d3f3 | 1135 | |
2694f319 TT |
1136 | memcpy(&p, ptr, sizeof(p)); |
1137 | free(p); | |
1138 | p = 0; | |
1139 | memcpy(ptr, &p, sizeof(p)); | |
7b4e4534 TT |
1140 | return 0; |
1141 | } | |
1142 | ||
1143 | /* | |
1144 | * Resize memory | |
1145 | */ | |
e47fd841 | 1146 | _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, |
c4e3d3f3 | 1147 | unsigned long size, void *ptr) |
7b4e4534 TT |
1148 | { |
1149 | void *p; | |
1150 | ||
39c191f5 ST |
1151 | /* Use "memcpy" for pointer assignments here to avoid problems |
1152 | * with C99 strict type aliasing rules. */ | |
2694f319 | 1153 | memcpy(&p, ptr, sizeof(p)); |
39c191f5 | 1154 | p = realloc(p, size); |
7b4e4534 | 1155 | if (!p) |
291c9049 | 1156 | return EXT2_ET_NO_MEMORY; |
2694f319 | 1157 | memcpy(ptr, &p, sizeof(p)); |
7b4e4534 TT |
1158 | return 0; |
1159 | } | |
1160 | #endif /* Custom memory routines */ | |
1161 | ||
3839e657 TT |
1162 | /* |
1163 | * Mark a filesystem superblock as dirty | |
1164 | */ | |
1165 | _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) | |
1166 | { | |
1167 | fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * Mark a filesystem as changed | |
1172 | */ | |
1173 | _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) | |
1174 | { | |
1175 | fs->flags |= EXT2_FLAG_CHANGED; | |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | * Check to see if a filesystem has changed | |
1180 | */ | |
1181 | _INLINE_ int ext2fs_test_changed(ext2_filsys fs) | |
1182 | { | |
1183 | return (fs->flags & EXT2_FLAG_CHANGED); | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * Mark a filesystem as valid | |
1188 | */ | |
1189 | _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) | |
1190 | { | |
1191 | fs->flags |= EXT2_FLAG_VALID; | |
1192 | } | |
1193 | ||
1194 | /* | |
1195 | * Mark a filesystem as NOT valid | |
1196 | */ | |
1197 | _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) | |
1198 | { | |
1199 | fs->flags &= ~EXT2_FLAG_VALID; | |
1200 | } | |
1201 | ||
1202 | /* | |
1203 | * Check to see if a filesystem is valid | |
1204 | */ | |
1205 | _INLINE_ int ext2fs_test_valid(ext2_filsys fs) | |
1206 | { | |
1207 | return (fs->flags & EXT2_FLAG_VALID); | |
1208 | } | |
1209 | ||
1210 | /* | |
1211 | * Mark the inode bitmap as dirty | |
1212 | */ | |
1213 | _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) | |
1214 | { | |
1215 | fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; | |
1216 | } | |
1217 | ||
1218 | /* | |
1219 | * Mark the block bitmap as dirty | |
1220 | */ | |
1221 | _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) | |
1222 | { | |
1223 | fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; | |
1224 | } | |
1225 | ||
1226 | /* | |
1227 | * Check to see if a filesystem's inode bitmap is dirty | |
1228 | */ | |
1229 | _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) | |
1230 | { | |
1231 | return (fs->flags & EXT2_FLAG_IB_DIRTY); | |
1232 | } | |
1233 | ||
1234 | /* | |
1235 | * Check to see if a filesystem's block bitmap is dirty | |
1236 | */ | |
1237 | _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) | |
1238 | { | |
1239 | return (fs->flags & EXT2_FLAG_BB_DIRTY); | |
1240 | } | |
1241 | ||
1242 | /* | |
1243 | * Return the group # of a block | |
1244 | */ | |
1245 | _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) | |
1246 | { | |
1247 | return (blk - fs->super->s_first_data_block) / | |
1248 | fs->super->s_blocks_per_group; | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * Return the group # of an inode number | |
1253 | */ | |
31dbecd4 | 1254 | _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) |
3839e657 TT |
1255 | { |
1256 | return (ino - 1) / fs->super->s_inodes_per_group; | |
1257 | } | |
0684a4f3 | 1258 | |
abf23439 ES |
1259 | /* |
1260 | * Return the first block (inclusive) in a group | |
1261 | */ | |
1262 | _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) | |
1263 | { | |
1264 | return fs->super->s_first_data_block + | |
1265 | (group * fs->super->s_blocks_per_group); | |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * Return the last block (inclusive) in a group | |
1270 | */ | |
1271 | _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) | |
1272 | { | |
1273 | return (group == fs->group_desc_count - 1 ? | |
1274 | fs->super->s_blocks_count - 1 : | |
1275 | ext2fs_group_first_block(fs, group) + | |
1276 | (fs->super->s_blocks_per_group - 1)); | |
1277 | } | |
1278 | ||
0684a4f3 TT |
1279 | _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, |
1280 | struct ext2_inode *inode) | |
1281 | { | |
1282 | return inode->i_blocks - | |
1283 | (inode->i_file_acl ? fs->blocksize >> 9 : 0); | |
1284 | } | |
69022e02 TT |
1285 | |
1286 | /* | |
1287 | * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) | |
1288 | */ | |
1289 | _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) | |
1290 | { | |
1291 | if (!a) | |
1292 | return 0; | |
1293 | return ((a - 1) / b) + 1; | |
1294 | } | |
3839e657 TT |
1295 | #undef _INLINE_ |
1296 | #endif | |
1297 | ||
fa7ef717 TT |
1298 | #ifdef __cplusplus |
1299 | } | |
1300 | #endif | |
1301 | ||
9abd2ce9 | 1302 | #endif /* _EXT2FS_EXT2FS_H */ |