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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
19c78dc0
TT		 12/*
13 * Non-GNU C compilers won't necessarily understand inline
14 */
15#ifndef __GNUC__
16#define NO_INLINE_FUNCS
17#endif
18
3839e657
TT		 19/*
20 * Where the master copy of the superblock is located, and how big
21 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
22 * the size of the superblock structure is not necessarily trustworthy
23 * (some versions have the padding set up so that the superblock is
24 * 1032 bytes long).
25 */
26#define SUPERBLOCK_OFFSET 1024
27#define SUPERBLOCK_SIZE 1024
28
f3db3566
TT		 29/*
30 * The last ext2fs revision level that this version of the library is
31 * able to support.
32 */
33#define EXT2_LIB_CURRENT_REV 0
34
1e3472c5 35#include <sys/types.h>
50e1e10f
TT		 36#include <linux/types.h>
37
38typedef __u32 blk_t;
3839e657
TT		 39typedef unsigned int dgrp_t;
40
41#include "et/com_err.h"
42#include "ext2fs/io.h"
43#include "ext2fs/ext2_err.h"
44
f3db3566
TT		 45typedef struct struct_ext2_filsys *ext2_filsys;
46
1e3472c5
TT		 47struct ext2fs_struct_generic_bitmap {
48 int magic;
49 ext2_filsys fs;
50 __u32 start, end;
51 __u32 real_end;
52 char * description;
53 char * bitmap;
54 errcode_t base_error_code;
55 __u32 reserved[7];
f3db3566
TT		 56};
57
1e3472c5
TT		 58#define EXT2FS_MARK_ERROR 0
59#define EXT2FS_UNMARK_ERROR 1
60#define EXT2FS_TEST_ERROR 2
f3db3566 61
1e3472c5 62typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
1e3472c5 63typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
1e3472c5 64typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
f3db3566 65
7f88b043
TT		 66#ifdef EXT2_DYNAMIC_REV
67#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
68#else
69#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
70#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
71#endif
72
19c78dc0
TT		 73/*
74 * badblocks list definitions
75 */
76
77typedef struct ext2_struct_badblocks_list *ext2_badblocks_list;
78typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate;
79
80/* old */
81typedef struct ext2_struct_badblocks_list *badblocks_list;
82typedef struct ext2_struct_badblocks_iterate *badblocks_iterate;
83
84#define BADBLOCKS_FLAG_DIRTY 1
85
86/*
87 * ext2_dblist structure and abstractions (see dblist.c)
88 */
89struct ext2_db_entry {
90 ino_t ino;
91 blk_t blk;
92 int blockcnt;
93};
94
95typedef struct ext2_struct_dblist *ext2_dblist;
96
97#define DBLIST_ABORT 1
98
3839e657
TT		 99/*
100 * Flags for the ext2_filsys structure
101 */
102
19c78dc0
TT		 103#define EXT2_FLAG_RW 0x01
104#define EXT2_FLAG_CHANGED 0x02
105#define EXT2_FLAG_DIRTY 0x04
106#define EXT2_FLAG_VALID 0x08
107#define EXT2_FLAG_IB_DIRTY 0x10
108#define EXT2_FLAG_BB_DIRTY 0x20
5c576477
TT		 109#define EXT2_FLAG_SWAP_BYTES 0x40
110#define EXT2_FLAG_SWAP_BYTES_READ 0x80
111#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
112#define EXT2_FLAG_MASTER_SB_ONLY 0x200
19c78dc0 113#define EXT2_FLAG_FORCE 0x400
3839e657 114
7f88b043
TT		 115/*
116 * Special flag in the ext2 inode i_flag field that means that this is
117 * a new inode. (So that ext2_write_inode() can clear extra fields.)
118 */
119#define EXT2_NEW_INODE_FL 0x80000000
120
3839e657 121struct struct_ext2_filsys {
f3db3566 122 int magic;
3839e657
TT		 123 io_channel io;
124 int flags;
125 char * device_name;
126 struct ext2_super_block * super;
127 int blocksize;
128 int fragsize;
129 unsigned long group_desc_count;
130 unsigned long desc_blocks;
131 struct ext2_group_desc * group_desc;
132 int inode_blocks_per_group;
f3db3566
TT		 133 ext2fs_inode_bitmap inode_map;
134 ext2fs_block_bitmap block_map;
3839e657
TT		 135 errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks);
136 errcode_t (*check_directory)(ext2_filsys fs, ino_t ino);
137 errcode_t (*write_bitmaps)(ext2_filsys fs);
1e3472c5
TT		 138 errcode_t (*read_inode)(ext2_filsys fs, ino_t ino,
139 struct ext2_inode *inode);
140 errcode_t (*write_inode)(ext2_filsys fs, ino_t ino,
141 struct ext2_inode *inode);
19c78dc0
TT		 142 badblocks_list badblocks;
143 ext2_dblist dblist;
144 /*
145 * Reserved for future expansion
146 */
147 __u32 reserved[12];
3839e657
TT		 148
149 /*
150 * Not used by ext2fs library; reserved for the use of the
151 * calling application.
152 */
153 void * private;
154};
155
f3db3566
TT		 156#include "ext2fs/bitops.h"
157
3839e657
TT		 158/*
159 * Return flags for the block iterator functions
160 */
161#define BLOCK_CHANGED 1
162#define BLOCK_ABORT 2
163#define BLOCK_ERROR 4
164
165/*
166 * Block interate flags
50e1e10f
TT		 167 *
168 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
169 * function should be called on blocks where the block number is zero.
170 * This is used by ext2fs_expand_dir() to be able to add a new block
171 * to an inode. It can also be used for programs that want to be able
172 * to deal with files that contain "holes".
173 *
174 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
175 * indirect, doubly indirect, etc. blocks should be called after all
176 * of the blocks containined in the indirect blocks are processed.
177 * This is useful if you are going to be deallocating blocks from an
178 * inode.
1e3472c5
TT		 179 *
180 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
181 * called for data blocks only.
3839e657
TT		 182 */
183#define BLOCK_FLAG_APPEND 1
50e1e10f 184#define BLOCK_FLAG_HOLE 1
3839e657 185#define BLOCK_FLAG_DEPTH_TRAVERSE 2
1e3472c5
TT		 186#define BLOCK_FLAG_DATA_ONLY 4
187
188/*
189 * Magic "block count" return values for the block iterator function.
190 */
191#define BLOCK_COUNT_IND (-1)
192#define BLOCK_COUNT_DIND (-2)
193#define BLOCK_COUNT_TIND (-3)
194#define BLOCK_COUNT_TRANSLATOR (-4)
3839e657
TT		 195
196/*
197 * Return flags for the directory iterator functions
198 */
199#define DIRENT_CHANGED 1
200#define DIRENT_ABORT 2
201#define DIRENT_ERROR 3
202
203/*
204 * Directory iterator flags
205 */
206
207#define DIRENT_FLAG_INCLUDE_EMPTY 1
208
19c78dc0
TT		 209
210#define DIRENT_DOT_FILE 1
211#define DIRENT_DOT_DOT_FILE 2
212#define DIRENT_OTHER_FILE 3
213
3839e657
TT		 214/*
215 * Inode scan definitions
216 */
f3db3566
TT		 217typedef struct ext2_struct_inode_scan *ext2_inode_scan;
218
19c78dc0
TT		 219/*
220 * ext2fs_scan flags
221 */
222#define EXT2_SF_CHK_BADBLOCKS 0x0001
223#define EXT2_SF_BAD_INODE_BLK 0x0002
224#define EXT2_SF_BAD_EXTRA_BYTES 0x0004
225#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
3839e657 226
50e1e10f
TT		 227/*
228 * ext2fs_check_if_mounted flags
229 */
230#define EXT2_MF_MOUNTED 1
231#define EXT2_MF_ISROOT 2
19c78dc0 232#define EXT2_MF_READONLY 4
50e1e10f
TT		 233
234/*
235 * Ext2/linux mode flags. We define them here so that we don't need
236 * to depend on the OS's sys/stat.h, since we may be compiling on a
237 * non-Linux system.
238 */
239#define LINUX_S_IFMT 00170000
240#define LINUX_S_IFSOCK 0140000
241#define LINUX_S_IFLNK 0120000
242#define LINUX_S_IFREG 0100000
243#define LINUX_S_IFBLK 0060000
244#define LINUX_S_IFDIR 0040000
245#define LINUX_S_IFCHR 0020000
246#define LINUX_S_IFIFO 0010000
247#define LINUX_S_ISUID 0004000
248#define LINUX_S_ISGID 0002000
249#define LINUX_S_ISVTX 0001000
250
1e3472c5
TT		 251#define LINUX_S_IRWXU 00700
252#define LINUX_S_IRUSR 00400
253#define LINUX_S_IWUSR 00200
254#define LINUX_S_IXUSR 00100
255
256#define LINUX_S_IRWXG 00070
257#define LINUX_S_IRGRP 00040
258#define LINUX_S_IWGRP 00020
259#define LINUX_S_IXGRP 00010
260
261#define LINUX_S_IRWXO 00007
262#define LINUX_S_IROTH 00004
263#define LINUX_S_IWOTH 00002
264#define LINUX_S_IXOTH 00001
265
50e1e10f
TT		 266#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
267#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
268#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
269#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
270#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
271#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
272#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
273
19c78dc0
TT		 274/*
275 * ext2_icount_t abstraction
276 */
277#define EXT2_ICOUNT_OPT_INCREMENT 0x01
278
279typedef struct ext2_icount *ext2_icount_t;
280
f3db3566
TT		 281/*
282 * For checking structure magic numbers...
283 */
3839e657 284
f3db3566
TT		 285#define EXT2_CHECK_MAGIC(struct, code) \
286 if ((struct)->magic != (code)) return (code)
1e3472c5
TT		 287
288
289/*
290 * The ext2fs library private definition of the ext2 superblock, so we
291 * don't have to depend on the kernel's definition of the superblock,
292 * which might not have the latest features.
293 */
294struct ext2fs_sb {
295 __u32 s_inodes_count; /* Inodes count */
296 __u32 s_blocks_count; /* Blocks count */
297 __u32 s_r_blocks_count; /* Reserved blocks count */
298 __u32 s_free_blocks_count; /* Free blocks count */
299 __u32 s_free_inodes_count; /* Free inodes count */
300 __u32 s_first_data_block; /* First Data Block */
301 __u32 s_log_block_size; /* Block size */
302 __s32 s_log_frag_size; /* Fragment size */
303 __u32 s_blocks_per_group; /* # Blocks per group */
304 __u32 s_frags_per_group; /* # Fragments per group */
305 __u32 s_inodes_per_group; /* # Inodes per group */
306 __u32 s_mtime; /* Mount time */
307 __u32 s_wtime; /* Write time */
308 __u16 s_mnt_count; /* Mount count */
309 __s16 s_max_mnt_count; /* Maximal mount count */
310 __u16 s_magic; /* Magic signature */
311 __u16 s_state; /* File system state */
312 __u16 s_errors; /* Behaviour when detecting errors */
313 __u16 s_minor_rev_level; /* minor revision level */
314 __u32 s_lastcheck; /* time of last check */
315 __u32 s_checkinterval; /* max. time between checks */
316 __u32 s_creator_os; /* OS */
317 __u32 s_rev_level; /* Revision level */
318 __u16 s_def_resuid; /* Default uid for reserved blocks */
319 __u16 s_def_resgid; /* Default gid for reserved blocks */
320 /*
321 * These fields are for EXT2_DYNAMIC_REV superblocks only.
322 *
323 * Note: the difference between the compatible feature set and
324 * the incompatible feature set is that if there is a bit set
325 * in the incompatible feature set that the kernel doesn't
326 * know about, it should refuse to mount the filesystem.
327 *
328 * e2fsck's requirements are more strict; if it doesn't know
329 * about a feature in either the compatible or incompatible
330 * feature set, it must abort and not try to meddle with
331 * things it doesn't understand...
332 */
333 __u32 s_first_ino; /* First non-reserved inode */
334 __u16 s_inode_size; /* size of inode structure */
335 __u16 s_block_group_nr; /* block group # of this superblock */
336 __u32 s_feature_compat; /* compatible feature set */
337 __u32 s_feature_incompat; /* incompatible feature set */
338 __u32 s_feature_ro_compat; /* readonly-compatible feature set */
339 __u8 s_uuid[16]; /* 128-bit uuid for volume */
340 char s_volume_name[16]; /* volume name */
341 char s_last_mounted[64]; /* directory where last mounted */
342 __u32 s_reserved[206]; /* Padding to the end of the block */
343};
521e3685
TT		 344
345/*
346 * Feature set definitions (that might not be in ext2_fs.h
347 * (was EXT2_COMPAT_SPARSE_SUPER)
348 */
349#ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
350#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
351#endif
352
353#define EXT2_LIB_FEATURE_COMPAT_SUPP 0
354#define EXT2_LIB_FEATURE_INCOMPAT_SUPP 0
355#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
356
3839e657
TT		 357/*
358 * function prototypes
359 */
360
361/* alloc.c */
362extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode,
f3db3566 363 ext2fs_inode_bitmap map, ino_t *ret);
3839e657 364extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
f3db3566 365 ext2fs_block_bitmap map, blk_t *ret);
3839e657 366extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
f3db3566
TT		 367 blk_t finish, int num,
368 ext2fs_block_bitmap map,
3839e657
TT		 369 blk_t *ret);
370
19c78dc0
TT		 371/* allocate_tables.c */
372errcode_t ext2fs_allocate_tables(ext2_filsys fs);
373
3839e657 374/* badblocks.c */
19c78dc0
TT		 375extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
376 int size);
377extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
378extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
379 blk_t blk);
380extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
381 blk_t blk);
382extern errcode_t
383 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
384 ext2_badblocks_iterate *ret);
385extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
386 blk_t *blk);
387extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
388
389/* bb_compat */
3839e657
TT		 390extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
391extern void badblocks_list_free(badblocks_list bb);
392extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
393extern int badblocks_list_test(badblocks_list bb, blk_t blk);
394extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
395 badblocks_iterate *ret);
396extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
397extern void badblocks_list_iterate_end(badblocks_iterate iter);
398
399/* bb_inode.c */
400extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
19c78dc0 401 ext2_badblocks_list bb_list);
3839e657
TT		 402
403/* bitmaps.c */
404extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
405extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
406extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
407extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1e3472c5
TT		 408extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
409 __u32 end,
410 __u32 real_end,
411 const char *descr,
412 ext2fs_generic_bitmap *ret);
50e1e10f
TT		 413extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
414 const char *descr,
415 ext2fs_block_bitmap *ret);
416extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
417 const char *descr,
418 ext2fs_inode_bitmap *ret);
419extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
420 ino_t end, ino_t *oend);
421extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
422 blk_t end, blk_t *oend);
423extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
424extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
3839e657
TT		 425extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
426extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
427
428/* block.c */
429extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
430 ino_t ino,
431 int flags,
432 char *block_buf,
433 int (*func)(ext2_filsys fs,
434 blk_t *blocknr,
435 int blockcnt,
436 void *private),
437 void *private);
438
19c78dc0
TT		 439errcode_t ext2fs_block_iterate2(ext2_filsys fs,
440 ino_t ino,
441 int flags,
442 char *block_buf,
443 int (*func)(ext2_filsys fs,
444 blk_t *blocknr,
445 int blockcnt,
446 blk_t ref_blk,
447 int ref_offset,
448 void *private),
449 void *private);
450
f3db3566
TT		 451/* check_desc.c */
452extern errcode_t ext2fs_check_desc(ext2_filsys fs);
453
3839e657
TT		 454/* closefs.c */
455extern errcode_t ext2fs_close(ext2_filsys fs);
456extern errcode_t ext2fs_flush(ext2_filsys fs);
521e3685 457extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
3839e657 458
50e1e10f
TT		 459/* cmp_bitmaps.c */
460extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
461 ext2fs_block_bitmap bm2);
462extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
463 ext2fs_inode_bitmap bm2);
464
19c78dc0
TT		 465/* dblist.c */
466
467errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs);
468errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
469void ext2fs_free_dblist(ext2_dblist dblist);
470errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino, blk_t blk,
471 int blockcnt);
472errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
473 int (*func)(ext2_filsys fs,
474 struct ext2_db_entry *db_info,
475 void *private),
476 void *private);
521e3685
TT		 477errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino, blk_t blk,
478 int blockcnt);
19c78dc0
TT		 479
480/* dblist_dir.c */
481extern errcode_t
482 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
483 int flags,
484 char *block_buf,
485 int (*func)(ino_t dir,
486 int entry,
487 struct ext2_dir_entry *dirent,
488 int offset,
489 int blocksize,
490 char *buf,
491 void *private),
492 void *private);
50e1e10f
TT		 493
494/* dirblock.c */
495extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
496 void *buf);
497extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
498 void *buf);
499
19c78dc0
TT		 500/* dir_iterate.c */
501extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
502 ino_t dir,
503 int flags,
504 char *block_buf,
505 int (*func)(struct ext2_dir_entry *dirent,
506 int offset,
507 int blocksize,
508 char *buf,
509 void *private),
510 void *private);
511 /* private to library */
512extern int ext2fs_process_dir_block(ext2_filsys fs,
513 blk_t *blocknr,
514 int blockcnt,
515 void *private);
516
517
3839e657
TT		 518/* expanddir.c */
519extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir);
520
521/* freefs.c */
522extern void ext2fs_free(ext2_filsys fs);
1e3472c5 523extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
50e1e10f
TT		 524extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
525extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
526
527/* getsize.c */
528extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
529 blk_t *retblocks);
3839e657
TT		 530
531/* initialize.c */
532extern errcode_t ext2fs_initialize(const char *name, int flags,
533 struct ext2_super_block *param,
534 io_manager manager, ext2_filsys *ret_fs);
535
536/* inode.c */
537extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
538 ext2_inode_scan *ret_scan);
539extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
540extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino,
541 struct ext2_inode *inode);
19c78dc0
TT		 542extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
543 int group);
544extern void ext2fs_set_inode_callback
545 (ext2_inode_scan scan,
546 errcode_t (*done_group)(ext2_filsys fs,
547 ext2_inode_scan scan,
548 dgrp_t group,
549 void * private),
550 void *done_group_data);
551extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
552 int clear_flags);
553extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino,
3839e657 554 struct ext2_inode * inode);
19c78dc0 555extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino,
3839e657
TT		 556 struct ext2_inode * inode);
557extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
558extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino);
559
19c78dc0
TT		 560/* icount.c */
561extern void ext2fs_free_icount(ext2_icount_t icount);
521e3685
TT		 562extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
563 ext2_icount_t hint, ext2_icount_t *ret);
19c78dc0
TT		 564extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
565 ext2_icount_t *ret);
566extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino,
567 __u16 *ret);
568extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino,
569 __u16 *ret);
570extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino,
571 __u16 *ret);
572extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino,
573 __u16 count);
574extern ino_t ext2fs_get_icount_size(ext2_icount_t icount);
521e3685 575errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
19c78dc0 576
50e1e10f
TT		 577/* ismounted.c */
578extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
579
3839e657 580/* namei.c */
3839e657
TT		 581extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name,
582 int namelen, char *buf, ino_t *inode);
583extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd,
584 const char *name, ino_t *inode);
1e3472c5
TT		 585errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd,
586 const char *name, ino_t *inode);
587extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd,
588 ino_t inode, ino_t *res_inode);
589
590/* native.c */
591int ext2fs_native_flag(void);
3839e657
TT		 592
593/* newdir.c */
594extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino,
595 ino_t parent_ino, char **block);
596
597/* mkdir.c */
598extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
599 const char *name);
600
601/* openfs.c */
602extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
603 int block_size, io_manager manager,
604 ext2_filsys *ret_fs);
3839e657
TT		 605
606/* get_pathname.c */
607extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino,
608 char **name);
609
610/* link.c */
611errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name,
612 ino_t ino, int flags);
613errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name,
614 ino_t ino, int flags);
615
616/* read_bb.c */
19c78dc0
TT		 617extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
618 ext2_badblocks_list *bb_list);
3839e657
TT		 619
620/* read_bb_file.c */
621extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
19c78dc0 622 ext2_badblocks_list *bb_list,
3839e657
TT		 623 void (*invalid)(ext2_filsys fs,
624 blk_t blk));
625
19c78dc0
TT		 626/* rs_bitmap.c */
627extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
628 __u32 new_real_end,
629 ext2fs_generic_bitmap bmap);
630extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
631 ext2fs_inode_bitmap bmap);
632extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
633 ext2fs_block_bitmap bmap);
634
50e1e10f
TT		 635/* swapfs.c */
636extern void ext2fs_swap_super(struct ext2_super_block * super);
637extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1e3472c5
TT		 638extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
639 struct ext2_inode *f, int hostorder);
640
19c78dc0 641/* valid_blk.c */
521e3685
TT		 642extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
643
644/* version.c */
645extern int ext2fs_parse_version_string(const char *ver_string);
646extern int ext2fs_get_library_version(const char **ver_string,
647 const char **date_string);
50e1e10f 648
3839e657
TT		 649/* inline functions */
650extern void ext2fs_mark_super_dirty(ext2_filsys fs);
651extern void ext2fs_mark_changed(ext2_filsys fs);
652extern int ext2fs_test_changed(ext2_filsys fs);
653extern void ext2fs_mark_valid(ext2_filsys fs);
654extern void ext2fs_unmark_valid(ext2_filsys fs);
655extern int ext2fs_test_valid(ext2_filsys fs);
656extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
657extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
658extern int ext2fs_test_ib_dirty(ext2_filsys fs);
659extern int ext2fs_test_bb_dirty(ext2_filsys fs);
660extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
661extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino);
662
663/*
664 * The actual inlined functions definitions themselves...
665 *
666 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
667 * functions at all!
668 */
669#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
670#ifdef INCLUDE_INLINE_FUNCS
671#define _INLINE_ extern
672#else
673#define _INLINE_ extern __inline__
674#endif
675
676/*
677 * Mark a filesystem superblock as dirty
678 */
679_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
680{
681 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
682}
683
684/*
685 * Mark a filesystem as changed
686 */
687_INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
688{
689 fs->flags |= EXT2_FLAG_CHANGED;
690}
691
692/*
693 * Check to see if a filesystem has changed
694 */
695_INLINE_ int ext2fs_test_changed(ext2_filsys fs)
696{
697 return (fs->flags & EXT2_FLAG_CHANGED);
698}
699
700/*
701 * Mark a filesystem as valid
702 */
703_INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
704{
705 fs->flags |= EXT2_FLAG_VALID;
706}
707
708/*
709 * Mark a filesystem as NOT valid
710 */
711_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
712{
713 fs->flags &= ~EXT2_FLAG_VALID;
714}
715
716/*
717 * Check to see if a filesystem is valid
718 */
719_INLINE_ int ext2fs_test_valid(ext2_filsys fs)
720{
721 return (fs->flags & EXT2_FLAG_VALID);
722}
723
724/*
725 * Mark the inode bitmap as dirty
726 */
727_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
728{
729 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
730}
731
732/*
733 * Mark the block bitmap as dirty
734 */
735_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
736{
737 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
738}
739
740/*
741 * Check to see if a filesystem's inode bitmap is dirty
742 */
743_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
744{
745 return (fs->flags & EXT2_FLAG_IB_DIRTY);
746}
747
748/*
749 * Check to see if a filesystem's block bitmap is dirty
750 */
751_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
752{
753 return (fs->flags & EXT2_FLAG_BB_DIRTY);
754}
755
756/*
757 * Return the group # of a block
758 */
759_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
760{
761 return (blk - fs->super->s_first_data_block) /
762 fs->super->s_blocks_per_group;
763}
764
765/*
766 * Return the group # of an inode number
767 */
768_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino)
769{
770 return (ino - 1) / fs->super->s_inodes_per_group;
771}
772#undef _INLINE_
773#endif
774
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