ext2fs.h revision cf5301d7f2c3bbed3d26600335102414cbf0c4ba
1/* 2 * ext2fs.h --- ext2fs 3 * 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 Library 8 * General Public License, version 2. 9 * %End-Header% 10 */ 11 12#ifndef _EXT2FS_EXT2FS_H 13#define _EXT2FS_EXT2FS_H 14 15#ifdef __GNUC__ 16#define EXT2FS_ATTR(x) __attribute__(x) 17#else 18#define EXT2FS_ATTR(x) 19#endif 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25/* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29#define NO_INLINE_FUNCS 30#endif 31 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 42/* 43 * The last ext2fs revision level that this version of the library is 44 * able to support. 45 */ 46#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 47 48#ifdef HAVE_SYS_TYPES_H 49#include <sys/types.h> 50#endif 51 52#include <stdio.h> 53#include <stdlib.h> 54#include <string.h> 55#include <errno.h> 56 57#if EXT2_FLAT_INCLUDES 58#include "e2_types.h" 59#include "ext2_fs.h" 60#include "ext3_extents.h" 61#else 62#include <ext2fs/ext2_types.h> 63#include <ext2fs/ext2_fs.h> 64#include <ext2fs/ext3_extents.h> 65#endif /* EXT2_FLAT_INCLUDES */ 66 67typedef __u32 ext2_ino_t; 68typedef __u32 blk_t; 69typedef __u64 blk64_t; 70typedef __u32 dgrp_t; 71typedef __u32 ext2_off_t; 72typedef __u64 ext2_off64_t; 73typedef __s64 e2_blkcnt_t; 74typedef __u32 ext2_dirhash_t; 75 76#if EXT2_FLAT_INCLUDES 77#include "com_err.h" 78#include "ext2_io.h" 79#include "ext2_err.h" 80#include "ext2_ext_attr.h" 81#else 82#include <et/com_err.h> 83#include <ext2fs/ext2_io.h> 84#include <ext2fs/ext2_err.h> 85#include <ext2fs/ext2_ext_attr.h> 86#endif 87 88/* 89 * Portability help for Microsoft Visual C++ 90 */ 91#ifdef _MSC_VER 92#define EXT2_QSORT_TYPE int __cdecl 93#else 94#define EXT2_QSORT_TYPE int 95#endif 96 97typedef struct struct_ext2_filsys *ext2_filsys; 98 99#define EXT2FS_MARK_ERROR 0 100#define EXT2FS_UNMARK_ERROR 1 101#define EXT2FS_TEST_ERROR 2 102 103typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 104typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 105typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 106 107#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 108 109 110/* 111 * Badblocks list definitions 112 */ 113 114typedef struct ext2_struct_u32_list *ext2_badblocks_list; 115typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 116 117typedef struct ext2_struct_u32_list *ext2_u32_list; 118typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 119 120/* old */ 121typedef struct ext2_struct_u32_list *badblocks_list; 122typedef struct ext2_struct_u32_iterate *badblocks_iterate; 123 124#define BADBLOCKS_FLAG_DIRTY 1 125 126/* 127 * ext2_dblist structure and abstractions (see dblist.c) 128 */ 129struct ext2_db_entry2 { 130 ext2_ino_t ino; 131 blk64_t blk; 132 e2_blkcnt_t blockcnt; 133}; 134 135/* Ye Olde 32-bit version */ 136struct ext2_db_entry { 137 ext2_ino_t ino; 138 blk_t blk; 139 int blockcnt; 140}; 141 142typedef struct ext2_struct_dblist *ext2_dblist; 143 144#define DBLIST_ABORT 1 145 146/* 147 * ext2_fileio definitions 148 */ 149 150#define EXT2_FILE_WRITE 0x0001 151#define EXT2_FILE_CREATE 0x0002 152 153#define EXT2_FILE_MASK 0x00FF 154 155#define EXT2_FILE_BUF_DIRTY 0x4000 156#define EXT2_FILE_BUF_VALID 0x2000 157 158typedef struct ext2_file *ext2_file_t; 159 160#define EXT2_SEEK_SET 0 161#define EXT2_SEEK_CUR 1 162#define EXT2_SEEK_END 2 163 164/* 165 * Flags for the ext2_filsys structure and for ext2fs_open() 166 */ 167#define EXT2_FLAG_RW 0x01 168#define EXT2_FLAG_CHANGED 0x02 169#define EXT2_FLAG_DIRTY 0x04 170#define EXT2_FLAG_VALID 0x08 171#define EXT2_FLAG_IB_DIRTY 0x10 172#define EXT2_FLAG_BB_DIRTY 0x20 173#define EXT2_FLAG_SWAP_BYTES 0x40 174#define EXT2_FLAG_SWAP_BYTES_READ 0x80 175#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 176#define EXT2_FLAG_MASTER_SB_ONLY 0x200 177#define EXT2_FLAG_FORCE 0x400 178#define EXT2_FLAG_SUPER_ONLY 0x800 179#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 180#define EXT2_FLAG_IMAGE_FILE 0x2000 181#define EXT2_FLAG_EXCLUSIVE 0x4000 182#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 183#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 184#define EXT2_FLAG_64BITS 0x20000 185#define EXT2_FLAG_PRINT_PROGRESS 0x40000 186#define EXT2_FLAG_DIRECT_IO 0x80000 187 188/* 189 * Special flag in the ext2 inode i_flag field that means that this is 190 * a new inode. (So that ext2_write_inode() can clear extra fields.) 191 */ 192#define EXT2_NEW_INODE_FL 0x80000000 193 194/* 195 * Flags for mkjournal 196 * 197 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 198 */ 199#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 200 201struct opaque_ext2_group_desc; 202 203struct struct_ext2_filsys { 204 errcode_t magic; 205 io_channel io; 206 int flags; 207 char * device_name; 208 struct ext2_super_block * super; 209 unsigned int blocksize; 210 int cluster_ratio_bits; 211 dgrp_t group_desc_count; 212 unsigned long desc_blocks; 213 struct opaque_ext2_group_desc * group_desc; 214 int inode_blocks_per_group; 215 ext2fs_inode_bitmap inode_map; 216 ext2fs_block_bitmap block_map; 217 /* XXX FIXME-64: not 64-bit safe, but not used? */ 218 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 219 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 220 errcode_t (*write_bitmaps)(ext2_filsys fs); 221 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 222 struct ext2_inode *inode); 223 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 224 struct ext2_inode *inode); 225 ext2_badblocks_list badblocks; 226 ext2_dblist dblist; 227 __u32 stride; /* for mke2fs */ 228 struct ext2_super_block * orig_super; 229 struct ext2_image_hdr * image_header; 230 __u32 umask; 231 time_t now; 232 /* 233 * Reserved for future expansion 234 */ 235 __u32 reserved[7]; 236 237 /* 238 * Reserved for the use of the calling application. 239 */ 240 void * priv_data; 241 242 /* 243 * Inode cache 244 */ 245 struct ext2_inode_cache *icache; 246 io_channel image_io; 247 248 /* 249 * More callback functions 250 */ 251 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 252 blk64_t *ret); 253 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 254}; 255 256#if EXT2_FLAT_INCLUDES 257#include "e2_bitops.h" 258#else 259#include <ext2fs/bitops.h> 260#endif 261 262/* 263 * Return flags for the block iterator functions 264 */ 265#define BLOCK_CHANGED 1 266#define BLOCK_ABORT 2 267#define BLOCK_ERROR 4 268 269/* 270 * Block interate flags 271 * 272 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 273 * function should be called on blocks where the block number is zero. 274 * This is used by ext2fs_expand_dir() to be able to add a new block 275 * to an inode. It can also be used for programs that want to be able 276 * to deal with files that contain "holes". 277 * 278 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 279 * the indirect, doubly indirect, etc. blocks should be called after 280 * all of the blocks containined in the indirect blocks are processed. 281 * This is useful if you are going to be deallocating blocks from an 282 * inode. 283 * 284 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 285 * called for data blocks only. 286 * 287 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 288 * modify returned block number. 289 * 290 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 291 * ext2fs_block_iterate2 that large files won't be accepted. 292 */ 293#define BLOCK_FLAG_APPEND 1 294#define BLOCK_FLAG_HOLE 1 295#define BLOCK_FLAG_DEPTH_TRAVERSE 2 296#define BLOCK_FLAG_DATA_ONLY 4 297#define BLOCK_FLAG_READ_ONLY 8 298 299#define BLOCK_FLAG_NO_LARGE 0x1000 300 301/* 302 * Magic "block count" return values for the block iterator function. 303 */ 304#define BLOCK_COUNT_IND (-1) 305#define BLOCK_COUNT_DIND (-2) 306#define BLOCK_COUNT_TIND (-3) 307#define BLOCK_COUNT_TRANSLATOR (-4) 308 309#if 0 310/* 311 * Flags for ext2fs_move_blocks 312 */ 313#define EXT2_BMOVE_GET_DBLIST 0x0001 314#define EXT2_BMOVE_DEBUG 0x0002 315#endif 316 317/* 318 * Generic (non-filesystem layout specific) extents structure 319 */ 320 321#define EXT2_EXTENT_FLAGS_LEAF 0x0001 322#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 323#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 324 325struct ext2fs_extent { 326 blk64_t e_pblk; /* first physical block */ 327 blk64_t e_lblk; /* first logical block extent covers */ 328 __u32 e_len; /* number of blocks covered by extent */ 329 __u32 e_flags; /* extent flags */ 330}; 331 332typedef struct ext2_extent_handle *ext2_extent_handle_t; 333typedef struct ext2_extent_path *ext2_extent_path_t; 334 335/* 336 * Flags used by ext2fs_extent_get() 337 */ 338#define EXT2_EXTENT_CURRENT 0x0000 339#define EXT2_EXTENT_MOVE_MASK 0x000F 340#define EXT2_EXTENT_ROOT 0x0001 341#define EXT2_EXTENT_LAST_LEAF 0x0002 342#define EXT2_EXTENT_FIRST_SIB 0x0003 343#define EXT2_EXTENT_LAST_SIB 0x0004 344#define EXT2_EXTENT_NEXT_SIB 0x0005 345#define EXT2_EXTENT_PREV_SIB 0x0006 346#define EXT2_EXTENT_NEXT_LEAF 0x0007 347#define EXT2_EXTENT_PREV_LEAF 0x0008 348#define EXT2_EXTENT_NEXT 0x0009 349#define EXT2_EXTENT_PREV 0x000A 350#define EXT2_EXTENT_UP 0x000B 351#define EXT2_EXTENT_DOWN 0x000C 352#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 353 354/* 355 * Flags used by ext2fs_extent_insert() 356 */ 357#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 358#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 359 360/* 361 * Flags used by ext2fs_extent_delete() 362 */ 363#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 364 365/* 366 * Flags used by ext2fs_extent_set_bmap() 367 */ 368#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 369 370/* 371 * Data structure returned by ext2fs_extent_get_info() 372 */ 373struct ext2_extent_info { 374 int curr_entry; 375 int curr_level; 376 int num_entries; 377 int max_entries; 378 int max_depth; 379 int bytes_avail; 380 blk64_t max_lblk; 381 blk64_t max_pblk; 382 __u32 max_len; 383 __u32 max_uninit_len; 384}; 385 386/* 387 * Flags for directory block reading and writing functions 388 */ 389#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 390 391/* 392 * Return flags for the directory iterator functions 393 */ 394#define DIRENT_CHANGED 1 395#define DIRENT_ABORT 2 396#define DIRENT_ERROR 3 397 398/* 399 * Directory iterator flags 400 */ 401 402#define DIRENT_FLAG_INCLUDE_EMPTY 1 403#define DIRENT_FLAG_INCLUDE_REMOVED 2 404 405#define DIRENT_DOT_FILE 1 406#define DIRENT_DOT_DOT_FILE 2 407#define DIRENT_OTHER_FILE 3 408#define DIRENT_DELETED_FILE 4 409 410/* 411 * Inode scan definitions 412 */ 413typedef struct ext2_struct_inode_scan *ext2_inode_scan; 414 415/* 416 * ext2fs_scan flags 417 */ 418#define EXT2_SF_CHK_BADBLOCKS 0x0001 419#define EXT2_SF_BAD_INODE_BLK 0x0002 420#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 421#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 422#define EXT2_SF_DO_LAZY 0x0010 423 424/* 425 * ext2fs_check_if_mounted flags 426 */ 427#define EXT2_MF_MOUNTED 1 428#define EXT2_MF_ISROOT 2 429#define EXT2_MF_READONLY 4 430#define EXT2_MF_SWAP 8 431#define EXT2_MF_BUSY 16 432 433/* 434 * Ext2/linux mode flags. We define them here so that we don't need 435 * to depend on the OS's sys/stat.h, since we may be compiling on a 436 * non-Linux system. 437 */ 438#define LINUX_S_IFMT 00170000 439#define LINUX_S_IFSOCK 0140000 440#define LINUX_S_IFLNK 0120000 441#define LINUX_S_IFREG 0100000 442#define LINUX_S_IFBLK 0060000 443#define LINUX_S_IFDIR 0040000 444#define LINUX_S_IFCHR 0020000 445#define LINUX_S_IFIFO 0010000 446#define LINUX_S_ISUID 0004000 447#define LINUX_S_ISGID 0002000 448#define LINUX_S_ISVTX 0001000 449 450#define LINUX_S_IRWXU 00700 451#define LINUX_S_IRUSR 00400 452#define LINUX_S_IWUSR 00200 453#define LINUX_S_IXUSR 00100 454 455#define LINUX_S_IRWXG 00070 456#define LINUX_S_IRGRP 00040 457#define LINUX_S_IWGRP 00020 458#define LINUX_S_IXGRP 00010 459 460#define LINUX_S_IRWXO 00007 461#define LINUX_S_IROTH 00004 462#define LINUX_S_IWOTH 00002 463#define LINUX_S_IXOTH 00001 464 465#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 466#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 467#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 468#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 469#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 470#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 471#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 472 473/* 474 * ext2 size of an inode 475 */ 476#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 477 478/* 479 * ext2_icount_t abstraction 480 */ 481#define EXT2_ICOUNT_OPT_INCREMENT 0x01 482 483typedef struct ext2_icount *ext2_icount_t; 484 485/* 486 * Flags for ext2fs_bmap 487 */ 488#define BMAP_ALLOC 0x0001 489#define BMAP_SET 0x0002 490 491/* 492 * Returned flags from ext2fs_bmap 493 */ 494#define BMAP_RET_UNINIT 0x0001 495 496/* 497 * Flags for imager.c functions 498 */ 499#define IMAGER_FLAG_INODEMAP 1 500#define IMAGER_FLAG_SPARSEWRITE 2 501 502/* 503 * For checking structure magic numbers... 504 */ 505 506#define EXT2_CHECK_MAGIC(struct, code) \ 507 if ((struct)->magic != (code)) return (code) 508 509 510/* 511 * For ext2 compression support 512 */ 513#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 514#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 515 516/* 517 * Features supported by this version of the library 518 */ 519#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 520 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 521 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 522 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 523 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 524 EXT2_FEATURE_COMPAT_EXT_ATTR) 525 526/* This #ifdef is temporary until compression is fully supported */ 527#ifdef ENABLE_COMPRESSION 528#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 529/* If the below warning bugs you, then have 530 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 531 environment at configure time. */ 532 #warning "Compression support is experimental" 533#endif 534#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 535 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 536 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 537 EXT2_FEATURE_INCOMPAT_META_BG|\ 538 EXT3_FEATURE_INCOMPAT_RECOVER|\ 539 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 540 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 541 EXT4_FEATURE_INCOMPAT_64BIT) 542#else 543#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 544 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 545 EXT2_FEATURE_INCOMPAT_META_BG|\ 546 EXT3_FEATURE_INCOMPAT_RECOVER|\ 547 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 548 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 549 EXT4_FEATURE_INCOMPAT_64BIT) 550#endif 551#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 552 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 553 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 554 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 555 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 556 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 557 EXT4_FEATURE_RO_COMPAT_BIGALLOC) 558 559/* 560 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 561 * to ext2fs_openfs() 562 */ 563#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 564#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 565 566 567/* Translate a block number to a cluster number */ 568#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 569#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 570#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 571/* Translate a cluster number to a block number */ 572#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 573/* Translate # of blks to # of clusters */ 574#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 575 (fs)->cluster_ratio_bits) 576 577/* 578 * function prototypes 579 */ 580 581/* alloc.c */ 582extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 583 ext2fs_inode_bitmap map, ext2_ino_t *ret); 584extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 585 ext2fs_block_bitmap map, blk_t *ret); 586extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 587 ext2fs_block_bitmap map, blk64_t *ret); 588extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 589 blk_t finish, int num, 590 ext2fs_block_bitmap map, 591 blk_t *ret); 592extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 593 blk64_t finish, int num, 594 ext2fs_block_bitmap map, 595 blk64_t *ret); 596extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 597 char *block_buf, blk_t *ret); 598extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 599 char *block_buf, blk64_t *ret); 600extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 601 errcode_t (*func)(ext2_filsys fs, 602 blk64_t goal, 603 blk64_t *ret), 604 errcode_t (**old)(ext2_filsys fs, 605 blk64_t goal, 606 blk64_t *ret)); 607 608/* alloc_sb.c */ 609extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 610 dgrp_t group, 611 ext2fs_block_bitmap bmap); 612extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 613 void (*func)(ext2_filsys fs, 614 blk64_t blk, 615 int inuse), 616 void (**old)(ext2_filsys fs, 617 blk64_t blk, 618 int inuse)); 619 620/* alloc_stats.c */ 621void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 622void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 623 int inuse, int isdir); 624void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 625void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 626 627/* alloc_tables.c */ 628extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 629extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 630 ext2fs_block_bitmap bmap); 631 632/* badblocks.c */ 633extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 634extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 635extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 636extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 637extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 638 ext2_u32_iterate *ret); 639extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 640extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 641extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 642extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 643 644extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 645 int size); 646extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 647 blk_t blk); 648extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 649 blk_t blk); 650extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 651extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 652extern errcode_t 653 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 654 ext2_badblocks_iterate *ret); 655extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 656 blk_t *blk); 657extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 658extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 659 ext2_badblocks_list *dest); 660extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 661 ext2_badblocks_list bb2); 662extern int ext2fs_u32_list_count(ext2_u32_list bb); 663 664/* bb_compat */ 665extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 666extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 667extern int badblocks_list_test(badblocks_list bb, blk_t blk); 668extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 669 badblocks_iterate *ret); 670extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 671extern void badblocks_list_iterate_end(badblocks_iterate iter); 672extern void badblocks_list_free(badblocks_list bb); 673 674/* bb_inode.c */ 675extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 676 ext2_badblocks_list bb_list); 677 678/* bitmaps.c */ 679extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 680extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 681extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 682 ext2fs_generic_bitmap *dest); 683extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 684extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 685extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 686extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 687extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 688 const char *descr, 689 ext2fs_block_bitmap *ret); 690extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 691 const char *descr, 692 ext2fs_block_bitmap *ret); 693extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 694extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 695 const char *descr, 696 ext2fs_inode_bitmap *ret); 697extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 698 ext2_ino_t end, ext2_ino_t *oend); 699extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 700 blk_t end, blk_t *oend); 701extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 702 blk64_t end, blk64_t *oend); 703extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 704extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 705extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 706extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 707extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 708 ext2fs_inode_bitmap bmap); 709extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 710 __u64 new_real_end, 711 ext2fs_inode_bitmap bmap); 712extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 713 ext2fs_block_bitmap bmap); 714extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 715 __u64 new_real_end, 716 ext2fs_block_bitmap bmap); 717extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 718 ext2fs_block_bitmap bm2); 719extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 720 ext2fs_inode_bitmap bm2); 721extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 722 ext2_ino_t start, unsigned int num, 723 void *in); 724extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 725 __u64 start, size_t num, 726 void *in); 727extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 728 ext2_ino_t start, unsigned int num, 729 void *out); 730extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 731 __u64 start, size_t num, 732 void *out); 733extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 734 blk_t start, unsigned int num, 735 void *in); 736extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 737 blk64_t start, size_t num, 738 void *in); 739extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 740 blk_t start, unsigned int num, 741 void *out); 742extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 743 blk64_t start, size_t num, 744 void *out); 745 746/* blknum.c */ 747extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 748extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 749extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 750extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 751 struct ext2_inode *inode); 752extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 753 struct ext2_inode *inode); 754extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 755extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 756 blk64_t blk); 757extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 758 blk64_t blk); 759extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 760extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 761 blk64_t blk); 762extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 763 blk64_t blk); 764extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 765extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 766 blk64_t blk); 767extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 768 blk64_t blk); 769/* Block group descriptor accessor functions */ 770extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 771 struct opaque_ext2_group_desc *gdp, 772 dgrp_t group); 773extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 774extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 775 blk64_t blk); 776extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 777extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 778 blk64_t blk); 779extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 780extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 781 blk64_t blk); 782extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 783extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 784 __u32 n); 785extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 786extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 787 __u32 n); 788extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 789extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 790 __u32 n); 791extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 792extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 793 __u32 n); 794extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 795extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 796extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 797extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 798extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 799extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 800extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 801extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 802extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 803 804/* block.c */ 805extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 806 ext2_ino_t ino, 807 int flags, 808 char *block_buf, 809 int (*func)(ext2_filsys fs, 810 blk_t *blocknr, 811 int blockcnt, 812 void *priv_data), 813 void *priv_data); 814errcode_t ext2fs_block_iterate2(ext2_filsys fs, 815 ext2_ino_t ino, 816 int flags, 817 char *block_buf, 818 int (*func)(ext2_filsys fs, 819 blk_t *blocknr, 820 e2_blkcnt_t blockcnt, 821 blk_t ref_blk, 822 int ref_offset, 823 void *priv_data), 824 void *priv_data); 825errcode_t ext2fs_block_iterate3(ext2_filsys fs, 826 ext2_ino_t ino, 827 int flags, 828 char *block_buf, 829 int (*func)(ext2_filsys fs, 830 blk64_t *blocknr, 831 e2_blkcnt_t blockcnt, 832 blk64_t ref_blk, 833 int ref_offset, 834 void *priv_data), 835 void *priv_data); 836 837/* bmap.c */ 838extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 839 struct ext2_inode *inode, 840 char *block_buf, int bmap_flags, 841 blk_t block, blk_t *phys_blk); 842extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 843 struct ext2_inode *inode, 844 char *block_buf, int bmap_flags, blk64_t block, 845 int *ret_flags, blk64_t *phys_blk); 846 847#if 0 848/* bmove.c */ 849extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 850 ext2fs_block_bitmap reserve, 851 ext2fs_block_bitmap alloc_map, 852 int flags); 853#endif 854 855/* check_desc.c */ 856extern errcode_t ext2fs_check_desc(ext2_filsys fs); 857 858/* closefs.c */ 859extern errcode_t ext2fs_close(ext2_filsys fs); 860extern errcode_t ext2fs_flush(ext2_filsys fs); 861extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 862extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 863 dgrp_t group, 864 blk64_t *ret_super_blk, 865 blk64_t *ret_old_desc_blk, 866 blk64_t *ret_new_desc_blk, 867 blk_t *ret_used_blks); 868extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 869 dgrp_t group, 870 blk_t *ret_super_blk, 871 blk_t *ret_old_desc_blk, 872 blk_t *ret_new_desc_blk, 873 int *ret_meta_bg); 874extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 875 876/* csum.c */ 877extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 878extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 879extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 880 881/* dblist.c */ 882 883extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 884extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 885extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 886 blk_t blk, int blockcnt); 887extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 888 blk64_t blk, e2_blkcnt_t blockcnt); 889extern void ext2fs_dblist_sort(ext2_dblist dblist, 890 EXT2_QSORT_TYPE (*sortfunc)(const void *, 891 const void *)); 892extern void ext2fs_dblist_sort2(ext2_dblist dblist, 893 EXT2_QSORT_TYPE (*sortfunc)(const void *, 894 const void *)); 895extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 896 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 897 void *priv_data), 898 void *priv_data); 899extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 900 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 901 void *priv_data), 902 void *priv_data); 903extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 904 blk_t blk, int blockcnt); 905extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 906 blk64_t blk, e2_blkcnt_t blockcnt); 907extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 908 ext2_dblist *dest); 909extern int ext2fs_dblist_count(ext2_dblist dblist); 910extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 911extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 912 struct ext2_db_entry **entry); 913extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 914 struct ext2_db_entry2 **entry); 915extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 916 917/* dblist_dir.c */ 918extern errcode_t 919 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 920 int flags, 921 char *block_buf, 922 int (*func)(ext2_ino_t dir, 923 int entry, 924 struct ext2_dir_entry *dirent, 925 int offset, 926 int blocksize, 927 char *buf, 928 void *priv_data), 929 void *priv_data); 930 931/* dirblock.c */ 932extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 933 void *buf); 934extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 935 void *buf, int flags); 936extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 937 void *buf, int flags); 938extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 939 void *buf); 940extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 941 void *buf, int flags); 942extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 943 void *buf, int flags); 944 945/* dirhash.c */ 946extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 947 const __u32 *seed, 948 ext2_dirhash_t *ret_hash, 949 ext2_dirhash_t *ret_minor_hash); 950 951 952/* dir_iterate.c */ 953extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 954 struct ext2_dir_entry *dirent, 955 unsigned int *rec_len); 956extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 957 unsigned int len, 958 struct ext2_dir_entry *dirent); 959extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 960 ext2_ino_t dir, 961 int flags, 962 char *block_buf, 963 int (*func)(struct ext2_dir_entry *dirent, 964 int offset, 965 int blocksize, 966 char *buf, 967 void *priv_data), 968 void *priv_data); 969extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 970 ext2_ino_t dir, 971 int flags, 972 char *block_buf, 973 int (*func)(ext2_ino_t dir, 974 int entry, 975 struct ext2_dir_entry *dirent, 976 int offset, 977 int blocksize, 978 char *buf, 979 void *priv_data), 980 void *priv_data); 981 982/* dupfs.c */ 983extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 984 985/* expanddir.c */ 986extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 987 988/* ext_attr.c */ 989extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 990 void *data); 991extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 992extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 993 void *buf); 994extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 995 void *buf); 996extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 997 void *buf); 998extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 999 char *block_buf, 1000 int adjust, __u32 *newcount); 1001extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1002 char *block_buf, 1003 int adjust, __u32 *newcount); 1004 1005/* extent.c */ 1006extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1007extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1008 ext2_extent_handle_t *handle); 1009extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1010 struct ext2_inode *inode, 1011 ext2_extent_handle_t *ret_handle); 1012extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1013extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1014 int flags, struct ext2fs_extent *extent); 1015extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1016 struct ext2fs_extent *extent); 1017extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1018 struct ext2fs_extent *extent); 1019extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1020 blk64_t logical, blk64_t physical, 1021 int flags); 1022extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1023extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1024 struct ext2_extent_info *info); 1025extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1026 blk64_t blk); 1027 1028/* fileio.c */ 1029extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1030 struct ext2_inode *inode, 1031 int flags, ext2_file_t *ret); 1032extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1033 int flags, ext2_file_t *ret); 1034extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1035struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1036extern errcode_t ext2fs_file_close(ext2_file_t file); 1037extern errcode_t ext2fs_file_flush(ext2_file_t file); 1038extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1039 unsigned int wanted, unsigned int *got); 1040extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1041 unsigned int nbytes, unsigned int *written); 1042extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1043 int whence, __u64 *ret_pos); 1044extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1045 int whence, ext2_off_t *ret_pos); 1046errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1047extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1048extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1049extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1050 1051/* finddev.c */ 1052extern char *ext2fs_find_block_device(dev_t device); 1053 1054/* flushb.c */ 1055extern errcode_t ext2fs_sync_device(int fd, int flushb); 1056 1057/* freefs.c */ 1058extern void ext2fs_free(ext2_filsys fs); 1059extern void ext2fs_free_dblist(ext2_dblist dblist); 1060extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1061extern void ext2fs_u32_list_free(ext2_u32_list bb); 1062 1063/* gen_bitmap.c */ 1064extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1065extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1066 __u32 start, __u32 end, 1067 __u32 real_end, 1068 const char *descr, char *init_map, 1069 ext2fs_generic_bitmap *ret); 1070extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1071 __u32 end, 1072 __u32 real_end, 1073 const char *descr, 1074 ext2fs_generic_bitmap *ret); 1075extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1076 ext2fs_generic_bitmap *dest); 1077extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1078extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1079 errcode_t magic, 1080 errcode_t neq, 1081 ext2_ino_t end, 1082 ext2_ino_t *oend); 1083extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1084extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1085 __u32 new_end, 1086 __u32 new_real_end, 1087 ext2fs_generic_bitmap bmap); 1088extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1089 ext2fs_generic_bitmap bm1, 1090 ext2fs_generic_bitmap bm2); 1091extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1092 errcode_t magic, 1093 __u32 start, __u32 num, 1094 void *out); 1095extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1096 errcode_t magic, 1097 __u32 start, __u32 num, 1098 void *in); 1099 1100/* gen_bitmap64.c */ 1101void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1102errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1103 int type, __u64 start, __u64 end, 1104 __u64 real_end, 1105 const char *descr, 1106 ext2fs_generic_bitmap *ret); 1107errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1108 ext2fs_generic_bitmap *dest); 1109void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1110errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1111 errcode_t neq, 1112 __u64 end, __u64 *oend); 1113void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1114errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1115 __u64 new_end, 1116 __u64 new_real_end); 1117errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1118 ext2fs_generic_bitmap bm1, 1119 ext2fs_generic_bitmap bm2); 1120errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1121 __u64 start, unsigned int num, 1122 void *out); 1123errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1124 __u64 start, unsigned int num, 1125 void *in); 1126errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1127 ext2fs_block_bitmap *bitmap); 1128 1129/* getsize.c */ 1130extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1131 blk_t *retblocks); 1132extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1133 blk64_t *retblocks); 1134 1135/* getsectsize.c */ 1136errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1137errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1138 1139/* i_block.c */ 1140errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1141 blk64_t num_blocks); 1142errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1143 blk64_t num_blocks); 1144errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1145 1146/* imager.c */ 1147extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1148extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1149extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1150extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1151extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1152extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1153 1154/* ind_block.c */ 1155errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1156errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1157 1158/* initialize.c */ 1159extern errcode_t ext2fs_initialize(const char *name, int flags, 1160 struct ext2_super_block *param, 1161 io_manager manager, ext2_filsys *ret_fs); 1162 1163/* icount.c */ 1164extern void ext2fs_free_icount(ext2_icount_t icount); 1165extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1166 int flags, ext2_icount_t *ret); 1167extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1168 unsigned int size, 1169 ext2_icount_t hint, ext2_icount_t *ret); 1170extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1171 unsigned int size, 1172 ext2_icount_t *ret); 1173extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1174 __u16 *ret); 1175extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1176 __u16 *ret); 1177extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1178 __u16 *ret); 1179extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1180 __u16 count); 1181extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1182errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1183 1184/* inode.c */ 1185extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1186extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1187 ext2_ino_t *ino, 1188 struct ext2_inode *inode, 1189 int bufsize); 1190extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1191 ext2_inode_scan *ret_scan); 1192extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1193extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1194 struct ext2_inode *inode); 1195extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1196 int group); 1197extern void ext2fs_set_inode_callback 1198 (ext2_inode_scan scan, 1199 errcode_t (*done_group)(ext2_filsys fs, 1200 ext2_inode_scan scan, 1201 dgrp_t group, 1202 void * priv_data), 1203 void *done_group_data); 1204extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1205 int clear_flags); 1206extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1207 struct ext2_inode * inode, 1208 int bufsize); 1209extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1210 struct ext2_inode * inode); 1211extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1212 struct ext2_inode * inode, 1213 int bufsize); 1214extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1215 struct ext2_inode * inode); 1216extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1217 struct ext2_inode * inode); 1218extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1219extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1220 1221/* inode_io.c */ 1222extern io_manager inode_io_manager; 1223extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1224 char **name); 1225extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1226 struct ext2_inode *inode, 1227 char **name); 1228 1229/* ismounted.c */ 1230extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1231extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1232 char *mtpt, int mtlen); 1233 1234/* punch.c */ 1235extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1236 struct ext2_inode *inode, 1237 char *block_buf, blk64_t start, 1238 blk64_t end); 1239 1240/* namei.c */ 1241extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1242 int namelen, char *buf, ext2_ino_t *inode); 1243extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1244 const char *name, ext2_ino_t *inode); 1245errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1246 const char *name, ext2_ino_t *inode); 1247extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1248 ext2_ino_t inode, ext2_ino_t *res_inode); 1249 1250/* native.c */ 1251int ext2fs_native_flag(void); 1252 1253/* newdir.c */ 1254extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1255 ext2_ino_t parent_ino, char **block); 1256 1257/* mkdir.c */ 1258extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1259 const char *name); 1260 1261/* mkjournal.c */ 1262extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1263 blk_t *ret_blk, int *ret_count); 1264extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1265 blk64_t *ret_blk, int *ret_count); 1266extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1267 __u32 size, int flags, 1268 char **ret_jsb); 1269extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1270 ext2_filsys journal_dev); 1271extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1272 int flags); 1273extern int ext2fs_default_journal_size(__u64 blocks); 1274 1275/* openfs.c */ 1276extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1277 unsigned int block_size, io_manager manager, 1278 ext2_filsys *ret_fs); 1279extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1280 int flags, int superblock, 1281 unsigned int block_size, io_manager manager, 1282 ext2_filsys *ret_fs); 1283extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1284 blk64_t group_block, dgrp_t i); 1285extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1286 dgrp_t i); 1287errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1288errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1289errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1290 1291/* get_pathname.c */ 1292extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1293 char **name); 1294 1295/* link.c */ 1296errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1297 ext2_ino_t ino, int flags); 1298errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1299 ext2_ino_t ino, int flags); 1300 1301/* read_bb.c */ 1302extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1303 ext2_badblocks_list *bb_list); 1304 1305/* read_bb_file.c */ 1306extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1307 ext2_badblocks_list *bb_list, 1308 void *priv_data, 1309 void (*invalid)(ext2_filsys fs, 1310 blk_t blk, 1311 char *badstr, 1312 void *priv_data)); 1313extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1314 ext2_badblocks_list *bb_list, 1315 void (*invalid)(ext2_filsys fs, 1316 blk_t blk)); 1317 1318/* res_gdt.c */ 1319extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1320 1321/* swapfs.c */ 1322extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1323 int has_header); 1324extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1325 struct ext2_ext_attr_header *from_hdr); 1326extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1327 struct ext2_ext_attr_entry *from_entry); 1328extern void ext2fs_swap_super(struct ext2_super_block * super); 1329extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1330extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1331extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1332 struct ext2_inode_large *f, int hostorder, 1333 int bufsize); 1334extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1335 struct ext2_inode *f, int hostorder); 1336 1337/* valid_blk.c */ 1338extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1339 1340/* version.c */ 1341extern int ext2fs_parse_version_string(const char *ver_string); 1342extern int ext2fs_get_library_version(const char **ver_string, 1343 const char **date_string); 1344 1345/* write_bb_file.c */ 1346extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1347 unsigned int flags, 1348 FILE *f); 1349 1350 1351/* inline functions */ 1352extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1353extern errcode_t ext2fs_get_memalign(unsigned long size, 1354 unsigned long align, void *ptr); 1355extern errcode_t ext2fs_free_mem(void *ptr); 1356extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1357 unsigned long size, void *ptr); 1358extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1359extern void ext2fs_mark_changed(ext2_filsys fs); 1360extern int ext2fs_test_changed(ext2_filsys fs); 1361extern void ext2fs_mark_valid(ext2_filsys fs); 1362extern void ext2fs_unmark_valid(ext2_filsys fs); 1363extern int ext2fs_test_valid(ext2_filsys fs); 1364extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1365extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1366extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1367extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1368extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1369extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1370extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1371extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1372extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1373 struct ext2_inode *inode); 1374extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1375extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1376 1377/* 1378 * The actual inlined functions definitions themselves... 1379 * 1380 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1381 * functions at all! 1382 */ 1383#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1384#ifdef INCLUDE_INLINE_FUNCS 1385#define _INLINE_ extern 1386#else 1387#ifdef __GNUC__ 1388#define _INLINE_ extern __inline__ 1389#else /* For Watcom C */ 1390#define _INLINE_ extern inline 1391#endif 1392#endif 1393 1394#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1395#include <string.h> 1396/* 1397 * Allocate memory 1398 */ 1399_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1400{ 1401 void *pp; 1402 1403 pp = malloc(size); 1404 if (!pp) 1405 return EXT2_ET_NO_MEMORY; 1406 memcpy(ptr, &pp, sizeof (pp)); 1407 return 0; 1408} 1409 1410_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1411 unsigned long align, void *ptr) 1412{ 1413 errcode_t retval; 1414 1415 if (align == 0) 1416 align = 8; 1417 retval = posix_memalign((void **) ptr, align, size); 1418 if (retval) { 1419 if (retval == ENOMEM) 1420 return EXT2_ET_NO_MEMORY; 1421 return retval; 1422 } 1423 return 0; 1424} 1425 1426_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1427{ 1428 void *pp; 1429 1430 pp = malloc(size); 1431 if (!pp) 1432 return EXT2_ET_NO_MEMORY; 1433 memset(pp, 0, size); 1434 memcpy(ptr, &pp, sizeof(pp)); 1435 return 0; 1436} 1437 1438_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1439{ 1440 if (count && (-1UL)/count<size) 1441 return EXT2_ET_NO_MEMORY; 1442 return ext2fs_get_mem(count*size, ptr); 1443} 1444 1445_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1446 unsigned long size, void *ptr) 1447{ 1448 void *pp; 1449 1450 if (count && (-1UL)/count<size) 1451 return EXT2_ET_NO_MEMORY; 1452 pp = calloc(count, size); 1453 if (!pp) 1454 return EXT2_ET_NO_MEMORY; 1455 memcpy(ptr, &pp, sizeof(pp)); 1456 return 0; 1457} 1458 1459/* 1460 * Free memory 1461 */ 1462_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1463{ 1464 void *p; 1465 1466 memcpy(&p, ptr, sizeof(p)); 1467 free(p); 1468 p = 0; 1469 memcpy(ptr, &p, sizeof(p)); 1470 return 0; 1471} 1472 1473/* 1474 * Resize memory 1475 */ 1476_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1477 unsigned long size, void *ptr) 1478{ 1479 void *p; 1480 1481 /* Use "memcpy" for pointer assignments here to avoid problems 1482 * with C99 strict type aliasing rules. */ 1483 memcpy(&p, ptr, sizeof(p)); 1484 p = realloc(p, size); 1485 if (!p) 1486 return EXT2_ET_NO_MEMORY; 1487 memcpy(ptr, &p, sizeof(p)); 1488 return 0; 1489} 1490#endif /* Custom memory routines */ 1491 1492/* 1493 * Mark a filesystem superblock as dirty 1494 */ 1495_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1496{ 1497 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1498} 1499 1500/* 1501 * Mark a filesystem as changed 1502 */ 1503_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1504{ 1505 fs->flags |= EXT2_FLAG_CHANGED; 1506} 1507 1508/* 1509 * Check to see if a filesystem has changed 1510 */ 1511_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1512{ 1513 return (fs->flags & EXT2_FLAG_CHANGED); 1514} 1515 1516/* 1517 * Mark a filesystem as valid 1518 */ 1519_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1520{ 1521 fs->flags |= EXT2_FLAG_VALID; 1522} 1523 1524/* 1525 * Mark a filesystem as NOT valid 1526 */ 1527_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1528{ 1529 fs->flags &= ~EXT2_FLAG_VALID; 1530} 1531 1532/* 1533 * Check to see if a filesystem is valid 1534 */ 1535_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1536{ 1537 return (fs->flags & EXT2_FLAG_VALID); 1538} 1539 1540/* 1541 * Mark the inode bitmap as dirty 1542 */ 1543_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1544{ 1545 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1546} 1547 1548/* 1549 * Mark the block bitmap as dirty 1550 */ 1551_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1552{ 1553 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1554} 1555 1556/* 1557 * Check to see if a filesystem's inode bitmap is dirty 1558 */ 1559_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1560{ 1561 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1562} 1563 1564/* 1565 * Check to see if a filesystem's block bitmap is dirty 1566 */ 1567_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1568{ 1569 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1570} 1571 1572/* 1573 * Return the group # of a block 1574 */ 1575_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1576{ 1577 return ext2fs_group_of_blk2(fs, blk); 1578} 1579/* 1580 * Return the group # of an inode number 1581 */ 1582_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1583{ 1584 return (ino - 1) / fs->super->s_inodes_per_group; 1585} 1586 1587/* 1588 * Return the first block (inclusive) in a group 1589 */ 1590_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1591{ 1592 return ext2fs_group_first_block2(fs, group); 1593} 1594 1595/* 1596 * Return the last block (inclusive) in a group 1597 */ 1598_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1599{ 1600 return ext2fs_group_last_block2(fs, group); 1601} 1602 1603_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1604 struct ext2_inode *inode) 1605{ 1606 return ext2fs_inode_data_blocks2(fs, inode); 1607} 1608 1609/* 1610 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1611 */ 1612_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1613{ 1614 if (!a) 1615 return 0; 1616 return ((a - 1) / b) + 1; 1617} 1618 1619_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1620{ 1621 if (!a) 1622 return 0; 1623 return ((a - 1) / b) + 1; 1624} 1625 1626#undef _INLINE_ 1627#endif 1628 1629#ifdef __cplusplus 1630} 1631#endif 1632 1633#endif /* _EXT2FS_EXT2FS_H */ 1634