ext2fs.h revision db8bbf27c9eeaa9c1803fb52a6cc7a60c5250c7e
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#ifndef _XOPEN_SOURCE 33#define _XOPEN_SOURCE 600 /* for posix_memalign() */ 34#endif 35 36/* 37 * Where the master copy of the superblock is located, and how big 38 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 39 * the size of the superblock structure is not necessarily trustworthy 40 * (some versions have the padding set up so that the superblock is 41 * 1032 bytes long). 42 */ 43#define SUPERBLOCK_OFFSET 1024 44#define SUPERBLOCK_SIZE 1024 45 46/* 47 * The last ext2fs revision level that this version of the library is 48 * able to support. 49 */ 50#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 51 52#ifdef HAVE_SYS_TYPES_H 53#include <sys/types.h> 54#endif 55 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <errno.h> 60 61#ifndef __USE_XOPEN2K 62/* If the "#define _XOPEN_SOURCE 600" didn't succeed in declaring 63 * posix_memalign(), maybe due to <features.h> or <stdlib.h> included beforej 64 * _XOPEN_SOURCE, declare it here to avoid compiler warnings. */ 65extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size); 66#endif 67 68#if EXT2_FLAT_INCLUDES 69#include "e2_types.h" 70#include "ext2_fs.h" 71#include "ext3_extents.h" 72#else 73#include <ext2fs/ext2_types.h> 74#include <ext2fs/ext2_fs.h> 75#include <ext2fs/ext3_extents.h> 76#endif /* EXT2_FLAT_INCLUDES */ 77 78typedef __u32 ext2_ino_t; 79typedef __u32 blk_t; 80typedef __u64 blk64_t; 81typedef __u32 dgrp_t; 82typedef __u32 ext2_off_t; 83typedef __u64 ext2_off64_t; 84typedef __s64 e2_blkcnt_t; 85typedef __u32 ext2_dirhash_t; 86 87#if EXT2_FLAT_INCLUDES 88#include "com_err.h" 89#include "ext2_io.h" 90#include "ext2_err.h" 91#include "ext2_ext_attr.h" 92#else 93#include <et/com_err.h> 94#include <ext2fs/ext2_io.h> 95#include <ext2fs/ext2_err.h> 96#include <ext2fs/ext2_ext_attr.h> 97#endif 98 99/* 100 * Portability help for Microsoft Visual C++ 101 */ 102#ifdef _MSC_VER 103#define EXT2_QSORT_TYPE int __cdecl 104#else 105#define EXT2_QSORT_TYPE int 106#endif 107 108typedef struct struct_ext2_filsys *ext2_filsys; 109 110#define EXT2FS_MARK_ERROR 0 111#define EXT2FS_UNMARK_ERROR 1 112#define EXT2FS_TEST_ERROR 2 113 114typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 115typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 116typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 117 118#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 119 120 121/* 122 * Badblocks list definitions 123 */ 124 125typedef struct ext2_struct_u32_list *ext2_badblocks_list; 126typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 127 128typedef struct ext2_struct_u32_list *ext2_u32_list; 129typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 130 131/* old */ 132typedef struct ext2_struct_u32_list *badblocks_list; 133typedef struct ext2_struct_u32_iterate *badblocks_iterate; 134 135#define BADBLOCKS_FLAG_DIRTY 1 136 137/* 138 * ext2_dblist structure and abstractions (see dblist.c) 139 */ 140struct ext2_db_entry2 { 141 ext2_ino_t ino; 142 blk64_t blk; 143 e2_blkcnt_t blockcnt; 144}; 145 146/* Ye Olde 32-bit version */ 147struct ext2_db_entry { 148 ext2_ino_t ino; 149 blk_t blk; 150 int blockcnt; 151}; 152 153typedef struct ext2_struct_dblist *ext2_dblist; 154 155#define DBLIST_ABORT 1 156 157/* 158 * ext2_fileio definitions 159 */ 160 161#define EXT2_FILE_WRITE 0x0001 162#define EXT2_FILE_CREATE 0x0002 163 164#define EXT2_FILE_MASK 0x00FF 165 166#define EXT2_FILE_BUF_DIRTY 0x4000 167#define EXT2_FILE_BUF_VALID 0x2000 168 169typedef struct ext2_file *ext2_file_t; 170 171#define EXT2_SEEK_SET 0 172#define EXT2_SEEK_CUR 1 173#define EXT2_SEEK_END 2 174 175/* 176 * Flags for the ext2_filsys structure and for ext2fs_open() 177 */ 178#define EXT2_FLAG_RW 0x01 179#define EXT2_FLAG_CHANGED 0x02 180#define EXT2_FLAG_DIRTY 0x04 181#define EXT2_FLAG_VALID 0x08 182#define EXT2_FLAG_IB_DIRTY 0x10 183#define EXT2_FLAG_BB_DIRTY 0x20 184#define EXT2_FLAG_SWAP_BYTES 0x40 185#define EXT2_FLAG_SWAP_BYTES_READ 0x80 186#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 187#define EXT2_FLAG_MASTER_SB_ONLY 0x200 188#define EXT2_FLAG_FORCE 0x400 189#define EXT2_FLAG_SUPER_ONLY 0x800 190#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 191#define EXT2_FLAG_IMAGE_FILE 0x2000 192#define EXT2_FLAG_EXCLUSIVE 0x4000 193#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 194#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 195#define EXT2_FLAG_64BITS 0x20000 196#define EXT2_FLAG_PRINT_PROGRESS 0x40000 197#define EXT2_FLAG_DIRECT_IO 0x80000 198 199/* 200 * Special flag in the ext2 inode i_flag field that means that this is 201 * a new inode. (So that ext2_write_inode() can clear extra fields.) 202 */ 203#define EXT2_NEW_INODE_FL 0x80000000 204 205/* 206 * Flags for mkjournal 207 */ 208#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 209#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 210 211struct opaque_ext2_group_desc; 212 213struct struct_ext2_filsys { 214 errcode_t magic; 215 io_channel io; 216 int flags; 217 char * device_name; 218 struct ext2_super_block * super; 219 unsigned int blocksize; 220 int cluster_ratio_bits; 221 dgrp_t group_desc_count; 222 unsigned long desc_blocks; 223 struct opaque_ext2_group_desc * group_desc; 224 unsigned int inode_blocks_per_group; 225 ext2fs_inode_bitmap inode_map; 226 ext2fs_block_bitmap block_map; 227 /* XXX FIXME-64: not 64-bit safe, but not used? */ 228 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 229 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 230 errcode_t (*write_bitmaps)(ext2_filsys fs); 231 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 232 struct ext2_inode *inode); 233 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 234 struct ext2_inode *inode); 235 ext2_badblocks_list badblocks; 236 ext2_dblist dblist; 237 __u32 stride; /* for mke2fs */ 238 struct ext2_super_block * orig_super; 239 struct ext2_image_hdr * image_header; 240 __u32 umask; 241 time_t now; 242 /* 243 * Reserved for future expansion 244 */ 245 __u32 reserved[7]; 246 247 /* 248 * Reserved for the use of the calling application. 249 */ 250 void * priv_data; 251 252 /* 253 * Inode cache 254 */ 255 struct ext2_inode_cache *icache; 256 io_channel image_io; 257 258 /* 259 * More callback functions 260 */ 261 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 262 blk64_t *ret); 263 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 264}; 265 266#if EXT2_FLAT_INCLUDES 267#include "e2_bitops.h" 268#else 269#include <ext2fs/bitops.h> 270#endif 271 272/* 273 * Return flags for the block iterator functions 274 */ 275#define BLOCK_CHANGED 1 276#define BLOCK_ABORT 2 277#define BLOCK_ERROR 4 278 279/* 280 * Block interate flags 281 * 282 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 283 * function should be called on blocks where the block number is zero. 284 * This is used by ext2fs_expand_dir() to be able to add a new block 285 * to an inode. It can also be used for programs that want to be able 286 * to deal with files that contain "holes". 287 * 288 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 289 * the indirect, doubly indirect, etc. blocks should be called after 290 * all of the blocks containined in the indirect blocks are processed. 291 * This is useful if you are going to be deallocating blocks from an 292 * inode. 293 * 294 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 295 * called for data blocks only. 296 * 297 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 298 * modify returned block number. 299 * 300 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 301 * ext2fs_block_iterate2 that large files won't be accepted. 302 */ 303#define BLOCK_FLAG_APPEND 1 304#define BLOCK_FLAG_HOLE 1 305#define BLOCK_FLAG_DEPTH_TRAVERSE 2 306#define BLOCK_FLAG_DATA_ONLY 4 307#define BLOCK_FLAG_READ_ONLY 8 308 309#define BLOCK_FLAG_NO_LARGE 0x1000 310 311/* 312 * Magic "block count" return values for the block iterator function. 313 */ 314#define BLOCK_COUNT_IND (-1) 315#define BLOCK_COUNT_DIND (-2) 316#define BLOCK_COUNT_TIND (-3) 317#define BLOCK_COUNT_TRANSLATOR (-4) 318 319#if 0 320/* 321 * Flags for ext2fs_move_blocks 322 */ 323#define EXT2_BMOVE_GET_DBLIST 0x0001 324#define EXT2_BMOVE_DEBUG 0x0002 325#endif 326 327/* 328 * Generic (non-filesystem layout specific) extents structure 329 */ 330 331#define EXT2_EXTENT_FLAGS_LEAF 0x0001 332#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 333#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 334 335struct ext2fs_extent { 336 blk64_t e_pblk; /* first physical block */ 337 blk64_t e_lblk; /* first logical block extent covers */ 338 __u32 e_len; /* number of blocks covered by extent */ 339 __u32 e_flags; /* extent flags */ 340}; 341 342typedef struct ext2_extent_handle *ext2_extent_handle_t; 343typedef struct ext2_extent_path *ext2_extent_path_t; 344 345/* 346 * Flags used by ext2fs_extent_get() 347 */ 348#define EXT2_EXTENT_CURRENT 0x0000 349#define EXT2_EXTENT_MOVE_MASK 0x000F 350#define EXT2_EXTENT_ROOT 0x0001 351#define EXT2_EXTENT_LAST_LEAF 0x0002 352#define EXT2_EXTENT_FIRST_SIB 0x0003 353#define EXT2_EXTENT_LAST_SIB 0x0004 354#define EXT2_EXTENT_NEXT_SIB 0x0005 355#define EXT2_EXTENT_PREV_SIB 0x0006 356#define EXT2_EXTENT_NEXT_LEAF 0x0007 357#define EXT2_EXTENT_PREV_LEAF 0x0008 358#define EXT2_EXTENT_NEXT 0x0009 359#define EXT2_EXTENT_PREV 0x000A 360#define EXT2_EXTENT_UP 0x000B 361#define EXT2_EXTENT_DOWN 0x000C 362#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 363 364/* 365 * Flags used by ext2fs_extent_insert() 366 */ 367#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 368#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 369 370/* 371 * Flags used by ext2fs_extent_delete() 372 */ 373#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 374 375/* 376 * Flags used by ext2fs_extent_set_bmap() 377 */ 378#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 379 380/* 381 * Data structure returned by ext2fs_extent_get_info() 382 */ 383struct ext2_extent_info { 384 int curr_entry; 385 int curr_level; 386 int num_entries; 387 int max_entries; 388 int max_depth; 389 int bytes_avail; 390 blk64_t max_lblk; 391 blk64_t max_pblk; 392 __u32 max_len; 393 __u32 max_uninit_len; 394}; 395 396/* 397 * Flags for directory block reading and writing functions 398 */ 399#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 400 401/* 402 * Return flags for the directory iterator functions 403 */ 404#define DIRENT_CHANGED 1 405#define DIRENT_ABORT 2 406#define DIRENT_ERROR 3 407 408/* 409 * Directory iterator flags 410 */ 411 412#define DIRENT_FLAG_INCLUDE_EMPTY 1 413#define DIRENT_FLAG_INCLUDE_REMOVED 2 414 415#define DIRENT_DOT_FILE 1 416#define DIRENT_DOT_DOT_FILE 2 417#define DIRENT_OTHER_FILE 3 418#define DIRENT_DELETED_FILE 4 419 420/* 421 * Inode scan definitions 422 */ 423typedef struct ext2_struct_inode_scan *ext2_inode_scan; 424 425/* 426 * ext2fs_scan flags 427 */ 428#define EXT2_SF_CHK_BADBLOCKS 0x0001 429#define EXT2_SF_BAD_INODE_BLK 0x0002 430#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 431#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 432#define EXT2_SF_DO_LAZY 0x0010 433 434/* 435 * ext2fs_check_if_mounted flags 436 */ 437#define EXT2_MF_MOUNTED 1 438#define EXT2_MF_ISROOT 2 439#define EXT2_MF_READONLY 4 440#define EXT2_MF_SWAP 8 441#define EXT2_MF_BUSY 16 442 443/* 444 * Ext2/linux mode flags. We define them here so that we don't need 445 * to depend on the OS's sys/stat.h, since we may be compiling on a 446 * non-Linux system. 447 */ 448#define LINUX_S_IFMT 00170000 449#define LINUX_S_IFSOCK 0140000 450#define LINUX_S_IFLNK 0120000 451#define LINUX_S_IFREG 0100000 452#define LINUX_S_IFBLK 0060000 453#define LINUX_S_IFDIR 0040000 454#define LINUX_S_IFCHR 0020000 455#define LINUX_S_IFIFO 0010000 456#define LINUX_S_ISUID 0004000 457#define LINUX_S_ISGID 0002000 458#define LINUX_S_ISVTX 0001000 459 460#define LINUX_S_IRWXU 00700 461#define LINUX_S_IRUSR 00400 462#define LINUX_S_IWUSR 00200 463#define LINUX_S_IXUSR 00100 464 465#define LINUX_S_IRWXG 00070 466#define LINUX_S_IRGRP 00040 467#define LINUX_S_IWGRP 00020 468#define LINUX_S_IXGRP 00010 469 470#define LINUX_S_IRWXO 00007 471#define LINUX_S_IROTH 00004 472#define LINUX_S_IWOTH 00002 473#define LINUX_S_IXOTH 00001 474 475#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 476#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 477#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 478#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 479#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 480#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 481#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 482 483/* 484 * ext2 size of an inode 485 */ 486#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 487 488/* 489 * ext2_icount_t abstraction 490 */ 491#define EXT2_ICOUNT_OPT_INCREMENT 0x01 492 493typedef struct ext2_icount *ext2_icount_t; 494 495/* 496 * Flags for ext2fs_bmap 497 */ 498#define BMAP_ALLOC 0x0001 499#define BMAP_SET 0x0002 500 501/* 502 * Returned flags from ext2fs_bmap 503 */ 504#define BMAP_RET_UNINIT 0x0001 505 506/* 507 * Flags for imager.c functions 508 */ 509#define IMAGER_FLAG_INODEMAP 1 510#define IMAGER_FLAG_SPARSEWRITE 2 511 512/* 513 * For checking structure magic numbers... 514 */ 515 516#define EXT2_CHECK_MAGIC(struct, code) \ 517 if ((struct)->magic != (code)) return (code) 518 519 520/* 521 * For ext2 compression support 522 */ 523#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 524#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 525 526/* 527 * Features supported by this version of the library 528 */ 529#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 530 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 531 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 532 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 533 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 534 EXT2_FEATURE_COMPAT_EXT_ATTR) 535 536/* This #ifdef is temporary until compression is fully supported */ 537#ifdef ENABLE_COMPRESSION 538#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 539/* If the below warning bugs you, then have 540 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 541 environment at configure time. */ 542 #warning "Compression support is experimental" 543#endif 544#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 545 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 546 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 547 EXT2_FEATURE_INCOMPAT_META_BG|\ 548 EXT3_FEATURE_INCOMPAT_RECOVER|\ 549 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 550 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 551 EXT4_FEATURE_INCOMPAT_64BIT) 552#else 553#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 554 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 555 EXT2_FEATURE_INCOMPAT_META_BG|\ 556 EXT3_FEATURE_INCOMPAT_RECOVER|\ 557 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 558 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 559 EXT4_FEATURE_INCOMPAT_64BIT) 560#endif 561#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 562 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 563 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 564 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 565 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 566 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 567 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 568 EXT4_FEATURE_RO_COMPAT_QUOTA) 569 570/* 571 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 572 * to ext2fs_openfs() 573 */ 574#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 575#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 576 577 578/* Translate a block number to a cluster number */ 579#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 580#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 581#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 582/* Translate a cluster number to a block number */ 583#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 584/* Translate # of blks to # of clusters */ 585#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 586 (fs)->cluster_ratio_bits) 587 588/* 589 * function prototypes 590 */ 591 592/* alloc.c */ 593extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 594 ext2fs_inode_bitmap map, ext2_ino_t *ret); 595extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 596 ext2fs_block_bitmap map, blk_t *ret); 597extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 598 ext2fs_block_bitmap map, blk64_t *ret); 599extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 600 blk_t finish, int num, 601 ext2fs_block_bitmap map, 602 blk_t *ret); 603extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 604 blk64_t finish, int num, 605 ext2fs_block_bitmap map, 606 blk64_t *ret); 607extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 608 char *block_buf, blk_t *ret); 609extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 610 char *block_buf, blk64_t *ret); 611extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 612 errcode_t (*func)(ext2_filsys fs, 613 blk64_t goal, 614 blk64_t *ret), 615 errcode_t (**old)(ext2_filsys fs, 616 blk64_t goal, 617 blk64_t *ret)); 618 619/* alloc_sb.c */ 620extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 621 dgrp_t group, 622 ext2fs_block_bitmap bmap); 623extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 624 void (*func)(ext2_filsys fs, 625 blk64_t blk, 626 int inuse), 627 void (**old)(ext2_filsys fs, 628 blk64_t blk, 629 int inuse)); 630 631/* alloc_stats.c */ 632void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 633void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 634 int inuse, int isdir); 635void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 636void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 637 638/* alloc_tables.c */ 639extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 640extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 641 ext2fs_block_bitmap bmap); 642 643/* badblocks.c */ 644extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 645extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 646extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 647extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 648extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 649 ext2_u32_iterate *ret); 650extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 651extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 652extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 653extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 654 655extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 656 int size); 657extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 658 blk_t blk); 659extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 660 blk_t blk); 661extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 662extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 663extern errcode_t 664 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 665 ext2_badblocks_iterate *ret); 666extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 667 blk_t *blk); 668extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 669extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 670 ext2_badblocks_list *dest); 671extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 672 ext2_badblocks_list bb2); 673extern int ext2fs_u32_list_count(ext2_u32_list bb); 674 675/* bb_compat */ 676extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 677extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 678extern int badblocks_list_test(badblocks_list bb, blk_t blk); 679extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 680 badblocks_iterate *ret); 681extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 682extern void badblocks_list_iterate_end(badblocks_iterate iter); 683extern void badblocks_list_free(badblocks_list bb); 684 685/* bb_inode.c */ 686extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 687 ext2_badblocks_list bb_list); 688 689/* bitmaps.c */ 690extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 691extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 692extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 693 ext2fs_generic_bitmap *dest); 694extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 695extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 696extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 697extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 698extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 699 const char *descr, 700 ext2fs_block_bitmap *ret); 701extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 702 const char *descr, 703 ext2fs_block_bitmap *ret); 704extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 705extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 706 const char *descr, 707 ext2fs_inode_bitmap *ret); 708extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 709 ext2_ino_t end, ext2_ino_t *oend); 710extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 711 blk_t end, blk_t *oend); 712extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 713 blk64_t end, blk64_t *oend); 714extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 715extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 716extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 717extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 718extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 719 ext2fs_inode_bitmap bmap); 720extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 721 __u64 new_real_end, 722 ext2fs_inode_bitmap bmap); 723extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 724 ext2fs_block_bitmap bmap); 725extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 726 __u64 new_real_end, 727 ext2fs_block_bitmap bmap); 728extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 729 ext2fs_block_bitmap bm2); 730extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 731 ext2fs_inode_bitmap bm2); 732extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 733 ext2_ino_t start, unsigned int num, 734 void *in); 735extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 736 __u64 start, size_t num, 737 void *in); 738extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 739 ext2_ino_t start, unsigned int num, 740 void *out); 741extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 742 __u64 start, size_t num, 743 void *out); 744extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 745 blk_t start, unsigned int num, 746 void *in); 747extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 748 blk64_t start, size_t num, 749 void *in); 750extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 751 blk_t start, unsigned int num, 752 void *out); 753extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 754 blk64_t start, size_t num, 755 void *out); 756 757/* blknum.c */ 758extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 759extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 760extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 761extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 762 struct ext2_inode *inode); 763extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 764 struct ext2_inode *inode); 765extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 766extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 767 blk64_t blk); 768extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 769 blk64_t blk); 770extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 771extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 772 blk64_t blk); 773extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 774 blk64_t blk); 775extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 776extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 777 blk64_t blk); 778extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 779 blk64_t blk); 780/* Block group descriptor accessor functions */ 781extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 782 struct opaque_ext2_group_desc *gdp, 783 dgrp_t group); 784extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 785extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 786 blk64_t blk); 787extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 788extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 789 blk64_t blk); 790extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 791extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 792 blk64_t blk); 793extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 794extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 795 __u32 n); 796extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 797extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 798 __u32 n); 799extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 800extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 801 __u32 n); 802extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 803extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 804 __u32 n); 805extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 806extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 807extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 808extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 809extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 810extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 811extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 812extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 813extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 814 815/* block.c */ 816extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 817 ext2_ino_t ino, 818 int flags, 819 char *block_buf, 820 int (*func)(ext2_filsys fs, 821 blk_t *blocknr, 822 int blockcnt, 823 void *priv_data), 824 void *priv_data); 825errcode_t ext2fs_block_iterate2(ext2_filsys fs, 826 ext2_ino_t ino, 827 int flags, 828 char *block_buf, 829 int (*func)(ext2_filsys fs, 830 blk_t *blocknr, 831 e2_blkcnt_t blockcnt, 832 blk_t ref_blk, 833 int ref_offset, 834 void *priv_data), 835 void *priv_data); 836errcode_t ext2fs_block_iterate3(ext2_filsys fs, 837 ext2_ino_t ino, 838 int flags, 839 char *block_buf, 840 int (*func)(ext2_filsys fs, 841 blk64_t *blocknr, 842 e2_blkcnt_t blockcnt, 843 blk64_t ref_blk, 844 int ref_offset, 845 void *priv_data), 846 void *priv_data); 847 848/* bmap.c */ 849extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 850 struct ext2_inode *inode, 851 char *block_buf, int bmap_flags, 852 blk_t block, blk_t *phys_blk); 853extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 854 struct ext2_inode *inode, 855 char *block_buf, int bmap_flags, blk64_t block, 856 int *ret_flags, blk64_t *phys_blk); 857 858#if 0 859/* bmove.c */ 860extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 861 ext2fs_block_bitmap reserve, 862 ext2fs_block_bitmap alloc_map, 863 int flags); 864#endif 865 866/* check_desc.c */ 867extern errcode_t ext2fs_check_desc(ext2_filsys fs); 868 869/* closefs.c */ 870extern errcode_t ext2fs_close(ext2_filsys fs); 871extern errcode_t ext2fs_flush(ext2_filsys fs); 872extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 873extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 874 dgrp_t group, 875 blk64_t *ret_super_blk, 876 blk64_t *ret_old_desc_blk, 877 blk64_t *ret_new_desc_blk, 878 blk_t *ret_used_blks); 879extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 880 dgrp_t group, 881 blk_t *ret_super_blk, 882 blk_t *ret_old_desc_blk, 883 blk_t *ret_new_desc_blk, 884 int *ret_meta_bg); 885extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 886 887/* crc32c.c */ 888extern __u32 crc32c_be(__u32 crc, unsigned char const *p, size_t len); 889extern __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); 890 891/* csum.c */ 892extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 893extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 894extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 895 896/* dblist.c */ 897 898extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 899extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 900extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 901 blk_t blk, int blockcnt); 902extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 903 blk64_t blk, e2_blkcnt_t blockcnt); 904extern void ext2fs_dblist_sort(ext2_dblist dblist, 905 EXT2_QSORT_TYPE (*sortfunc)(const void *, 906 const void *)); 907extern void ext2fs_dblist_sort2(ext2_dblist dblist, 908 EXT2_QSORT_TYPE (*sortfunc)(const void *, 909 const void *)); 910extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 911 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 912 void *priv_data), 913 void *priv_data); 914extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 915 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 916 void *priv_data), 917 void *priv_data); 918extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 919 blk_t blk, int blockcnt); 920extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 921 blk64_t blk, e2_blkcnt_t blockcnt); 922extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 923 ext2_dblist *dest); 924extern int ext2fs_dblist_count(ext2_dblist dblist); 925extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 926extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 927 struct ext2_db_entry **entry); 928extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 929 struct ext2_db_entry2 **entry); 930extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 931 932/* dblist_dir.c */ 933extern errcode_t 934 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 935 int flags, 936 char *block_buf, 937 int (*func)(ext2_ino_t dir, 938 int entry, 939 struct ext2_dir_entry *dirent, 940 int offset, 941 int blocksize, 942 char *buf, 943 void *priv_data), 944 void *priv_data); 945 946/* dirblock.c */ 947extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 948 void *buf); 949extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 950 void *buf, int flags); 951extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 952 void *buf, int flags); 953extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 954 void *buf); 955extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 956 void *buf, int flags); 957extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 958 void *buf, int flags); 959 960/* dirhash.c */ 961extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 962 const __u32 *seed, 963 ext2_dirhash_t *ret_hash, 964 ext2_dirhash_t *ret_minor_hash); 965 966 967/* dir_iterate.c */ 968extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 969 struct ext2_dir_entry *dirent, 970 unsigned int *rec_len); 971extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 972 unsigned int len, 973 struct ext2_dir_entry *dirent); 974extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 975 ext2_ino_t dir, 976 int flags, 977 char *block_buf, 978 int (*func)(struct ext2_dir_entry *dirent, 979 int offset, 980 int blocksize, 981 char *buf, 982 void *priv_data), 983 void *priv_data); 984extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 985 ext2_ino_t dir, 986 int flags, 987 char *block_buf, 988 int (*func)(ext2_ino_t dir, 989 int entry, 990 struct ext2_dir_entry *dirent, 991 int offset, 992 int blocksize, 993 char *buf, 994 void *priv_data), 995 void *priv_data); 996 997/* dupfs.c */ 998extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 999 1000/* expanddir.c */ 1001extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1002 1003/* ext_attr.c */ 1004extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1005 void *data); 1006extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1007extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1008 void *buf); 1009extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1010 void *buf); 1011extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1012 void *buf); 1013extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1014 char *block_buf, 1015 int adjust, __u32 *newcount); 1016extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1017 char *block_buf, 1018 int adjust, __u32 *newcount); 1019 1020/* extent.c */ 1021extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1022extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1023 ext2_extent_handle_t *handle); 1024extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1025 struct ext2_inode *inode, 1026 ext2_extent_handle_t *ret_handle); 1027extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1028extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1029 int flags, struct ext2fs_extent *extent); 1030extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1031 struct ext2fs_extent *extent); 1032extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1033 struct ext2fs_extent *extent); 1034extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1035 blk64_t logical, blk64_t physical, 1036 int flags); 1037extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1038extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1039 struct ext2_extent_info *info); 1040extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1041 blk64_t blk); 1042 1043/* fileio.c */ 1044extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1045 struct ext2_inode *inode, 1046 int flags, ext2_file_t *ret); 1047extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1048 int flags, ext2_file_t *ret); 1049extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1050struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1051extern errcode_t ext2fs_file_close(ext2_file_t file); 1052extern errcode_t ext2fs_file_flush(ext2_file_t file); 1053extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1054 unsigned int wanted, unsigned int *got); 1055extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1056 unsigned int nbytes, unsigned int *written); 1057extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1058 int whence, __u64 *ret_pos); 1059extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1060 int whence, ext2_off_t *ret_pos); 1061errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1062extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1063extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1064extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1065 1066/* finddev.c */ 1067extern char *ext2fs_find_block_device(dev_t device); 1068 1069/* flushb.c */ 1070extern errcode_t ext2fs_sync_device(int fd, int flushb); 1071 1072/* freefs.c */ 1073extern void ext2fs_free(ext2_filsys fs); 1074extern void ext2fs_free_dblist(ext2_dblist dblist); 1075extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1076extern void ext2fs_u32_list_free(ext2_u32_list bb); 1077 1078/* gen_bitmap.c */ 1079extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1080extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1081 __u32 start, __u32 end, 1082 __u32 real_end, 1083 const char *descr, char *init_map, 1084 ext2fs_generic_bitmap *ret); 1085extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1086 __u32 end, 1087 __u32 real_end, 1088 const char *descr, 1089 ext2fs_generic_bitmap *ret); 1090extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1091 ext2fs_generic_bitmap *dest); 1092extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1093extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1094 errcode_t magic, 1095 errcode_t neq, 1096 ext2_ino_t end, 1097 ext2_ino_t *oend); 1098extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1099extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1100 __u32 new_end, 1101 __u32 new_real_end, 1102 ext2fs_generic_bitmap bmap); 1103extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1104 ext2fs_generic_bitmap bm1, 1105 ext2fs_generic_bitmap bm2); 1106extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1107 errcode_t magic, 1108 __u32 start, __u32 num, 1109 void *out); 1110extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1111 errcode_t magic, 1112 __u32 start, __u32 num, 1113 void *in); 1114 1115/* gen_bitmap64.c */ 1116void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1117errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1118 int type, __u64 start, __u64 end, 1119 __u64 real_end, 1120 const char *descr, 1121 ext2fs_generic_bitmap *ret); 1122errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1123 ext2fs_generic_bitmap *dest); 1124void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1125errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1126 errcode_t neq, 1127 __u64 end, __u64 *oend); 1128void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1129errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1130 __u64 new_end, 1131 __u64 new_real_end); 1132errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1133 ext2fs_generic_bitmap bm1, 1134 ext2fs_generic_bitmap bm2); 1135errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1136 __u64 start, unsigned int num, 1137 void *out); 1138errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1139 __u64 start, unsigned int num, 1140 void *in); 1141errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1142 ext2fs_block_bitmap *bitmap); 1143 1144/* getsize.c */ 1145extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1146 blk_t *retblocks); 1147extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1148 blk64_t *retblocks); 1149 1150/* getsectsize.c */ 1151errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1152errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1153 1154/* i_block.c */ 1155errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1156 blk64_t num_blocks); 1157errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1158 blk64_t num_blocks); 1159errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1160 1161/* imager.c */ 1162extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1163extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1164extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1165extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1166extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1167extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1168 1169/* ind_block.c */ 1170errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1171errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1172 1173/* initialize.c */ 1174extern errcode_t ext2fs_initialize(const char *name, int flags, 1175 struct ext2_super_block *param, 1176 io_manager manager, ext2_filsys *ret_fs); 1177 1178/* icount.c */ 1179extern void ext2fs_free_icount(ext2_icount_t icount); 1180extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1181 int flags, ext2_icount_t *ret); 1182extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1183 unsigned int size, 1184 ext2_icount_t hint, ext2_icount_t *ret); 1185extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1186 unsigned int size, 1187 ext2_icount_t *ret); 1188extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1189 __u16 *ret); 1190extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1191 __u16 *ret); 1192extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1193 __u16 *ret); 1194extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1195 __u16 count); 1196extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1197errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1198 1199/* inode.c */ 1200extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1201extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1202 ext2_ino_t *ino, 1203 struct ext2_inode *inode, 1204 int bufsize); 1205extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1206 ext2_inode_scan *ret_scan); 1207extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1208extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1209 struct ext2_inode *inode); 1210extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1211 int group); 1212extern void ext2fs_set_inode_callback 1213 (ext2_inode_scan scan, 1214 errcode_t (*done_group)(ext2_filsys fs, 1215 ext2_inode_scan scan, 1216 dgrp_t group, 1217 void * priv_data), 1218 void *done_group_data); 1219extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1220 int clear_flags); 1221extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1222 struct ext2_inode * inode, 1223 int bufsize); 1224extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1225 struct ext2_inode * inode); 1226extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1227 struct ext2_inode * inode, 1228 int bufsize); 1229extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1230 struct ext2_inode * inode); 1231extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1232 struct ext2_inode * inode); 1233extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1234extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1235 1236/* inode_io.c */ 1237extern io_manager inode_io_manager; 1238extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1239 char **name); 1240extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1241 struct ext2_inode *inode, 1242 char **name); 1243 1244/* ismounted.c */ 1245extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1246extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1247 char *mtpt, int mtlen); 1248 1249/* punch.c */ 1250extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1251 struct ext2_inode *inode, 1252 char *block_buf, blk64_t start, 1253 blk64_t end); 1254 1255/* namei.c */ 1256extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1257 int namelen, char *buf, ext2_ino_t *inode); 1258extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1259 const char *name, ext2_ino_t *inode); 1260errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1261 const char *name, ext2_ino_t *inode); 1262extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1263 ext2_ino_t inode, ext2_ino_t *res_inode); 1264 1265/* native.c */ 1266int ext2fs_native_flag(void); 1267 1268/* newdir.c */ 1269extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1270 ext2_ino_t parent_ino, char **block); 1271 1272/* mkdir.c */ 1273extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1274 const char *name); 1275 1276/* mkjournal.c */ 1277extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1278 blk_t *ret_blk, int *ret_count); 1279extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1280 blk64_t *ret_blk, int *ret_count); 1281extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1282 __u32 num_blocks, int flags, 1283 char **ret_jsb); 1284extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1285 ext2_filsys journal_dev); 1286extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1287 int flags); 1288extern int ext2fs_default_journal_size(__u64 num_blocks); 1289 1290/* openfs.c */ 1291extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1292 unsigned int block_size, io_manager manager, 1293 ext2_filsys *ret_fs); 1294extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1295 int flags, int superblock, 1296 unsigned int block_size, io_manager manager, 1297 ext2_filsys *ret_fs); 1298extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1299 blk64_t group_block, dgrp_t i); 1300extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1301 dgrp_t i); 1302errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1303errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1304errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1305 1306/* get_pathname.c */ 1307extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1308 char **name); 1309 1310/* link.c */ 1311errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1312 ext2_ino_t ino, int flags); 1313errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1314 ext2_ino_t ino, int flags); 1315 1316/* read_bb.c */ 1317extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1318 ext2_badblocks_list *bb_list); 1319 1320/* read_bb_file.c */ 1321extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1322 ext2_badblocks_list *bb_list, 1323 void *priv_data, 1324 void (*invalid)(ext2_filsys fs, 1325 blk_t blk, 1326 char *badstr, 1327 void *priv_data)); 1328extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1329 ext2_badblocks_list *bb_list, 1330 void (*invalid)(ext2_filsys fs, 1331 blk_t blk)); 1332 1333/* res_gdt.c */ 1334extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1335 1336/* swapfs.c */ 1337extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1338 int has_header); 1339extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1340 struct ext2_ext_attr_header *from_hdr); 1341extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1342 struct ext2_ext_attr_entry *from_entry); 1343extern void ext2fs_swap_super(struct ext2_super_block * super); 1344extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1345extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1346extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1347 struct ext2_inode_large *f, int hostorder, 1348 int bufsize); 1349extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1350 struct ext2_inode *f, int hostorder); 1351 1352/* valid_blk.c */ 1353extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1354 1355/* version.c */ 1356extern int ext2fs_parse_version_string(const char *ver_string); 1357extern int ext2fs_get_library_version(const char **ver_string, 1358 const char **date_string); 1359 1360/* write_bb_file.c */ 1361extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1362 unsigned int flags, 1363 FILE *f); 1364 1365 1366/* inline functions */ 1367extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1368extern errcode_t ext2fs_get_memalign(unsigned long size, 1369 unsigned long align, void *ptr); 1370extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1371extern errcode_t ext2fs_get_array(unsigned long count, 1372 unsigned long size, void *ptr); 1373extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1374 unsigned long size, void *ptr); 1375extern errcode_t ext2fs_free_mem(void *ptr); 1376extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1377 unsigned long size, void *ptr); 1378extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1379extern void ext2fs_mark_changed(ext2_filsys fs); 1380extern int ext2fs_test_changed(ext2_filsys fs); 1381extern void ext2fs_mark_valid(ext2_filsys fs); 1382extern void ext2fs_unmark_valid(ext2_filsys fs); 1383extern int ext2fs_test_valid(ext2_filsys fs); 1384extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1385extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1386extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1387extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1388extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1389extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1390extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1391extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1392extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1393 struct ext2_inode *inode); 1394extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1395extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1396 1397/* 1398 * The actual inlined functions definitions themselves... 1399 * 1400 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1401 * functions at all! 1402 */ 1403#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1404#ifdef INCLUDE_INLINE_FUNCS 1405#define _INLINE_ extern 1406#else 1407#ifdef __GNUC__ 1408#define _INLINE_ extern __inline__ 1409#else /* For Watcom C */ 1410#define _INLINE_ extern inline 1411#endif 1412#endif 1413 1414#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1415#include <string.h> 1416/* 1417 * Allocate memory 1418 */ 1419_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1420{ 1421 void *pp; 1422 1423 pp = malloc(size); 1424 if (!pp) 1425 return EXT2_ET_NO_MEMORY; 1426 memcpy(ptr, &pp, sizeof (pp)); 1427 return 0; 1428} 1429 1430_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1431 unsigned long align, void *ptr) 1432{ 1433 errcode_t retval; 1434 1435 if (align == 0) 1436 align = 8; 1437 retval = posix_memalign((void **) ptr, align, size); 1438 if (retval) { 1439 if (retval == ENOMEM) 1440 return EXT2_ET_NO_MEMORY; 1441 return retval; 1442 } 1443 return 0; 1444} 1445 1446_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1447{ 1448 void *pp; 1449 1450 pp = malloc(size); 1451 if (!pp) 1452 return EXT2_ET_NO_MEMORY; 1453 memset(pp, 0, size); 1454 memcpy(ptr, &pp, sizeof(pp)); 1455 return 0; 1456} 1457 1458_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1459{ 1460 if (count && (-1UL)/count<size) 1461 return EXT2_ET_NO_MEMORY; 1462 return ext2fs_get_mem(count*size, ptr); 1463} 1464 1465_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1466 unsigned long size, void *ptr) 1467{ 1468 void *pp; 1469 1470 if (count && (-1UL)/count<size) 1471 return EXT2_ET_NO_MEMORY; 1472 pp = calloc(count, size); 1473 if (!pp) 1474 return EXT2_ET_NO_MEMORY; 1475 memcpy(ptr, &pp, sizeof(pp)); 1476 return 0; 1477} 1478 1479/* 1480 * Free memory 1481 */ 1482_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1483{ 1484 void *p; 1485 1486 memcpy(&p, ptr, sizeof(p)); 1487 free(p); 1488 p = 0; 1489 memcpy(ptr, &p, sizeof(p)); 1490 return 0; 1491} 1492 1493/* 1494 * Resize memory 1495 */ 1496_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1497 unsigned long size, void *ptr) 1498{ 1499 void *p; 1500 1501 /* Use "memcpy" for pointer assignments here to avoid problems 1502 * with C99 strict type aliasing rules. */ 1503 memcpy(&p, ptr, sizeof(p)); 1504 p = realloc(p, size); 1505 if (!p) 1506 return EXT2_ET_NO_MEMORY; 1507 memcpy(ptr, &p, sizeof(p)); 1508 return 0; 1509} 1510#endif /* Custom memory routines */ 1511 1512/* 1513 * Mark a filesystem superblock as dirty 1514 */ 1515_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1516{ 1517 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1518} 1519 1520/* 1521 * Mark a filesystem as changed 1522 */ 1523_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1524{ 1525 fs->flags |= EXT2_FLAG_CHANGED; 1526} 1527 1528/* 1529 * Check to see if a filesystem has changed 1530 */ 1531_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1532{ 1533 return (fs->flags & EXT2_FLAG_CHANGED); 1534} 1535 1536/* 1537 * Mark a filesystem as valid 1538 */ 1539_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1540{ 1541 fs->flags |= EXT2_FLAG_VALID; 1542} 1543 1544/* 1545 * Mark a filesystem as NOT valid 1546 */ 1547_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1548{ 1549 fs->flags &= ~EXT2_FLAG_VALID; 1550} 1551 1552/* 1553 * Check to see if a filesystem is valid 1554 */ 1555_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1556{ 1557 return (fs->flags & EXT2_FLAG_VALID); 1558} 1559 1560/* 1561 * Mark the inode bitmap as dirty 1562 */ 1563_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1564{ 1565 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1566} 1567 1568/* 1569 * Mark the block bitmap as dirty 1570 */ 1571_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1572{ 1573 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1574} 1575 1576/* 1577 * Check to see if a filesystem's inode bitmap is dirty 1578 */ 1579_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1580{ 1581 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1582} 1583 1584/* 1585 * Check to see if a filesystem's block bitmap is dirty 1586 */ 1587_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1588{ 1589 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1590} 1591 1592/* 1593 * Return the group # of a block 1594 */ 1595_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1596{ 1597 return ext2fs_group_of_blk2(fs, blk); 1598} 1599/* 1600 * Return the group # of an inode number 1601 */ 1602_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1603{ 1604 return (ino - 1) / fs->super->s_inodes_per_group; 1605} 1606 1607/* 1608 * Return the first block (inclusive) in a group 1609 */ 1610_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1611{ 1612 return ext2fs_group_first_block2(fs, group); 1613} 1614 1615/* 1616 * Return the last block (inclusive) in a group 1617 */ 1618_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1619{ 1620 return ext2fs_group_last_block2(fs, group); 1621} 1622 1623_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1624 struct ext2_inode *inode) 1625{ 1626 return ext2fs_inode_data_blocks2(fs, inode); 1627} 1628 1629/* 1630 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1631 */ 1632_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1633{ 1634 if (!a) 1635 return 0; 1636 return ((a - 1) / b) + 1; 1637} 1638 1639_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1640{ 1641 if (!a) 1642 return 0; 1643 return ((a - 1) / b) + 1; 1644} 1645 1646#undef _INLINE_ 1647#endif 1648 1649#ifdef __cplusplus 1650} 1651#endif 1652 1653#endif /* _EXT2FS_EXT2FS_H */ 1654