ext2fs.h revision 57e2467d6211b2ff0dbcc23f705afd3b95fb917f
1c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)/* 2c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * ext2fs.h --- ext2fs 3c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * 4c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 5c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * 6c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * %Begin-Header% 7c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * This file may be redistributed under the terms of the GNU Public 8c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * License. 9c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * %End-Header% 10c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) */ 11ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 12c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#ifndef _EXT2FS_EXT2FS_H 13c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define _EXT2FS_EXT2FS_H 14c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 15c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#ifdef __GNUC__ 16c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define EXT2FS_ATTR(x) __attribute__(x) 17c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 18c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define EXT2FS_ATTR(x) 19c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 20c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 21c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#ifdef __cplusplus 22c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)extern "C" { 23ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#endif 24ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 25ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch/* 26ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * Non-GNU C compilers won't necessarily understand inline 27ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch */ 28ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#define NO_INLINE_FUNCS 30ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#endif 31ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 32ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch/* 33ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * Where the master copy of the superblock is located, and how big 348bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 358bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) * the size of the superblock structure is not necessarily trustworthy 36ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * (some versions have the padding set up so that the superblock is 37ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * 1032 bytes long). 38ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch */ 39ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#define SUPERBLOCK_OFFSET 1024 40ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#define SUPERBLOCK_SIZE 1024 415c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 425c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/* 43ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * The last ext2fs revision level that this version of the library is 44ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * able to support. 45ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch */ 46ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 47ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 48ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#ifdef HAVE_SYS_TYPES_H 49ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include <sys/types.h> 50c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 51c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 52c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include <stdio.h> 53#include <stdlib.h> 54#include <string.h> 55 56#if EXT2_FLAT_INCLUDES 57#include "e2_types.h" 58#include "ext2_fs.h" 59#include "ext3_extents.h" 60#else 61#include <ext2fs/ext2_types.h> 62#include <ext2fs/ext2_fs.h> 63#include <ext2fs/ext3_extents.h> 64#endif /* EXT2_FLAT_INCLUDES */ 65 66typedef __u32 ext2_ino_t; 67typedef __u32 blk_t; 68typedef __u64 blk64_t; 69typedef __u32 dgrp_t; 70typedef __u32 ext2_off_t; 71typedef __u64 ext2_off64_t; 72typedef __s64 e2_blkcnt_t; 73typedef __u32 ext2_dirhash_t; 74 75#if EXT2_FLAT_INCLUDES 76#include "com_err.h" 77#include "ext2_io.h" 78#include "ext2_err.h" 79#include "ext2_ext_attr.h" 80#else 81#include <et/com_err.h> 82#include <ext2fs/ext2_io.h> 83#include <ext2fs/ext2_err.h> 84#include <ext2fs/ext2_ext_attr.h> 85#endif 86 87/* 88 * Portability help for Microsoft Visual C++ 89 */ 90#ifdef _MSC_VER 91#define EXT2_QSORT_TYPE int __cdecl 92#else 93#define EXT2_QSORT_TYPE int 94#endif 95 96typedef struct struct_ext2_filsys *ext2_filsys; 97 98#define EXT2FS_MARK_ERROR 0 99#define EXT2FS_UNMARK_ERROR 1 100#define EXT2FS_TEST_ERROR 2 101 102typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 103typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 104typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 105 106#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 107 108 109/* 110 * Badblocks list definitions 111 */ 112 113typedef struct ext2_struct_u32_list *ext2_badblocks_list; 114typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 115 116typedef struct ext2_struct_u32_list *ext2_u32_list; 117typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 118 119/* old */ 120typedef struct ext2_struct_u32_list *badblocks_list; 121typedef struct ext2_struct_u32_iterate *badblocks_iterate; 122 123#define BADBLOCKS_FLAG_DIRTY 1 124 125/* 126 * ext2_dblist structure and abstractions (see dblist.c) 127 */ 128struct ext2_db_entry { 129 ext2_ino_t ino; 130 blk_t blk; 131 int blockcnt; 132}; 133 134typedef struct ext2_struct_dblist *ext2_dblist; 135 136#define DBLIST_ABORT 1 137 138/* 139 * ext2_fileio definitions 140 */ 141 142#define EXT2_FILE_WRITE 0x0001 143#define EXT2_FILE_CREATE 0x0002 144 145#define EXT2_FILE_MASK 0x00FF 146 147#define EXT2_FILE_BUF_DIRTY 0x4000 148#define EXT2_FILE_BUF_VALID 0x2000 149 150typedef struct ext2_file *ext2_file_t; 151 152#define EXT2_SEEK_SET 0 153#define EXT2_SEEK_CUR 1 154#define EXT2_SEEK_END 2 155 156/* 157 * Flags for the ext2_filsys structure and for ext2fs_open() 158 */ 159#define EXT2_FLAG_RW 0x01 160#define EXT2_FLAG_CHANGED 0x02 161#define EXT2_FLAG_DIRTY 0x04 162#define EXT2_FLAG_VALID 0x08 163#define EXT2_FLAG_IB_DIRTY 0x10 164#define EXT2_FLAG_BB_DIRTY 0x20 165#define EXT2_FLAG_SWAP_BYTES 0x40 166#define EXT2_FLAG_SWAP_BYTES_READ 0x80 167#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 168#define EXT2_FLAG_MASTER_SB_ONLY 0x200 169#define EXT2_FLAG_FORCE 0x400 170#define EXT2_FLAG_SUPER_ONLY 0x800 171#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 172#define EXT2_FLAG_IMAGE_FILE 0x2000 173#define EXT2_FLAG_EXCLUSIVE 0x4000 174#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 175#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 176 177/* 178 * Special flag in the ext2 inode i_flag field that means that this is 179 * a new inode. (So that ext2_write_inode() can clear extra fields.) 180 */ 181#define EXT2_NEW_INODE_FL 0x80000000 182 183/* 184 * Flags for mkjournal 185 * 186 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 187 */ 188#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 189 190struct struct_ext2_filsys { 191 errcode_t magic; 192 io_channel io; 193 int flags; 194 char * device_name; 195 struct ext2_super_block * super; 196 unsigned int blocksize; 197 int fragsize; 198 dgrp_t group_desc_count; 199 unsigned long desc_blocks; 200 struct ext2_group_desc * group_desc; 201 int inode_blocks_per_group; 202 ext2fs_inode_bitmap inode_map; 203 ext2fs_block_bitmap block_map; 204 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 205 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 206 errcode_t (*write_bitmaps)(ext2_filsys fs); 207 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 208 struct ext2_inode *inode); 209 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 210 struct ext2_inode *inode); 211 ext2_badblocks_list badblocks; 212 ext2_dblist dblist; 213 __u32 stride; /* for mke2fs */ 214 struct ext2_super_block * orig_super; 215 struct ext2_image_hdr * image_header; 216 __u32 umask; 217 time_t now; 218 /* 219 * Reserved for future expansion 220 */ 221 __u32 reserved[7]; 222 223 /* 224 * Reserved for the use of the calling application. 225 */ 226 void * priv_data; 227 228 /* 229 * Inode cache 230 */ 231 struct ext2_inode_cache *icache; 232 io_channel image_io; 233 234 /* 235 * More callback functions 236 */ 237 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 238 blk64_t *ret); 239 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 240}; 241 242#if EXT2_FLAT_INCLUDES 243#include "e2_bitops.h" 244#else 245#include <ext2fs/bitops.h> 246#endif 247 248/* 249 * Return flags for the block iterator functions 250 */ 251#define BLOCK_CHANGED 1 252#define BLOCK_ABORT 2 253#define BLOCK_ERROR 4 254 255/* 256 * Block interate flags 257 * 258 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 259 * function should be called on blocks where the block number is zero. 260 * This is used by ext2fs_expand_dir() to be able to add a new block 261 * to an inode. It can also be used for programs that want to be able 262 * to deal with files that contain "holes". 263 * 264 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 265 * the indirect, doubly indirect, etc. blocks should be called after 266 * all of the blocks containined in the indirect blocks are processed. 267 * This is useful if you are going to be deallocating blocks from an 268 * inode. 269 * 270 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 271 * called for data blocks only. 272 * 273 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 274 * modify returned block number. 275 * 276 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 277 * ext2fs_block_iterate2 that large files won't be accepted. 278 */ 279#define BLOCK_FLAG_APPEND 1 280#define BLOCK_FLAG_HOLE 1 281#define BLOCK_FLAG_DEPTH_TRAVERSE 2 282#define BLOCK_FLAG_DATA_ONLY 4 283#define BLOCK_FLAG_READ_ONLY 8 284 285#define BLOCK_FLAG_NO_LARGE 0x1000 286 287/* 288 * Magic "block count" return values for the block iterator function. 289 */ 290#define BLOCK_COUNT_IND (-1) 291#define BLOCK_COUNT_DIND (-2) 292#define BLOCK_COUNT_TIND (-3) 293#define BLOCK_COUNT_TRANSLATOR (-4) 294 295#if 0 296/* 297 * Flags for ext2fs_move_blocks 298 */ 299#define EXT2_BMOVE_GET_DBLIST 0x0001 300#define EXT2_BMOVE_DEBUG 0x0002 301#endif 302 303/* 304 * Generic (non-filesystem layout specific) extents structure 305 */ 306 307#define EXT2_EXTENT_FLAGS_LEAF 0x0001 308#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 309#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 310 311struct ext2fs_extent { 312 blk64_t e_pblk; /* first physical block */ 313 blk64_t e_lblk; /* first logical block extent covers */ 314 __u32 e_len; /* number of blocks covered by extent */ 315 __u32 e_flags; /* extent flags */ 316}; 317 318typedef struct ext2_extent_handle *ext2_extent_handle_t; 319typedef struct ext2_extent_path *ext2_extent_path_t; 320 321/* 322 * Flags used by ext2fs_extent_get() 323 */ 324#define EXT2_EXTENT_CURRENT 0x0000 325#define EXT2_EXTENT_MOVE_MASK 0x000F 326#define EXT2_EXTENT_ROOT 0x0001 327#define EXT2_EXTENT_LAST_LEAF 0x0002 328#define EXT2_EXTENT_FIRST_SIB 0x0003 329#define EXT2_EXTENT_LAST_SIB 0x0004 330#define EXT2_EXTENT_NEXT_SIB 0x0005 331#define EXT2_EXTENT_PREV_SIB 0x0006 332#define EXT2_EXTENT_NEXT_LEAF 0x0007 333#define EXT2_EXTENT_PREV_LEAF 0x0008 334#define EXT2_EXTENT_NEXT 0x0009 335#define EXT2_EXTENT_PREV 0x000A 336#define EXT2_EXTENT_UP 0x000B 337#define EXT2_EXTENT_DOWN 0x000C 338#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 339 340/* 341 * Flags used by ext2fs_extent_insert() 342 */ 343#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 344#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 345 346/* 347 * Flags used by ext2fs_extent_delete() 348 */ 349#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 350 351/* 352 * Flags used by ext2fs_extent_set_bmap() 353 */ 354#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 355 356/* 357 * Data structure returned by ext2fs_extent_get_info() 358 */ 359struct ext2_extent_info { 360 int curr_entry; 361 int curr_level; 362 int num_entries; 363 int max_entries; 364 int max_depth; 365 int bytes_avail; 366 blk64_t max_lblk; 367 blk64_t max_pblk; 368 __u32 max_len; 369 __u32 max_uninit_len; 370}; 371 372/* 373 * Flags for directory block reading and writing functions 374 */ 375#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 376 377/* 378 * Return flags for the directory iterator functions 379 */ 380#define DIRENT_CHANGED 1 381#define DIRENT_ABORT 2 382#define DIRENT_ERROR 3 383 384/* 385 * Directory iterator flags 386 */ 387 388#define DIRENT_FLAG_INCLUDE_EMPTY 1 389#define DIRENT_FLAG_INCLUDE_REMOVED 2 390 391#define DIRENT_DOT_FILE 1 392#define DIRENT_DOT_DOT_FILE 2 393#define DIRENT_OTHER_FILE 3 394#define DIRENT_DELETED_FILE 4 395 396/* 397 * Inode scan definitions 398 */ 399typedef struct ext2_struct_inode_scan *ext2_inode_scan; 400 401/* 402 * ext2fs_scan flags 403 */ 404#define EXT2_SF_CHK_BADBLOCKS 0x0001 405#define EXT2_SF_BAD_INODE_BLK 0x0002 406#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 407#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 408#define EXT2_SF_DO_LAZY 0x0010 409 410/* 411 * ext2fs_check_if_mounted flags 412 */ 413#define EXT2_MF_MOUNTED 1 414#define EXT2_MF_ISROOT 2 415#define EXT2_MF_READONLY 4 416#define EXT2_MF_SWAP 8 417#define EXT2_MF_BUSY 16 418 419/* 420 * Ext2/linux mode flags. We define them here so that we don't need 421 * to depend on the OS's sys/stat.h, since we may be compiling on a 422 * non-Linux system. 423 */ 424#define LINUX_S_IFMT 00170000 425#define LINUX_S_IFSOCK 0140000 426#define LINUX_S_IFLNK 0120000 427#define LINUX_S_IFREG 0100000 428#define LINUX_S_IFBLK 0060000 429#define LINUX_S_IFDIR 0040000 430#define LINUX_S_IFCHR 0020000 431#define LINUX_S_IFIFO 0010000 432#define LINUX_S_ISUID 0004000 433#define LINUX_S_ISGID 0002000 434#define LINUX_S_ISVTX 0001000 435 436#define LINUX_S_IRWXU 00700 437#define LINUX_S_IRUSR 00400 438#define LINUX_S_IWUSR 00200 439#define LINUX_S_IXUSR 00100 440 441#define LINUX_S_IRWXG 00070 442#define LINUX_S_IRGRP 00040 443#define LINUX_S_IWGRP 00020 444#define LINUX_S_IXGRP 00010 445 446#define LINUX_S_IRWXO 00007 447#define LINUX_S_IROTH 00004 448#define LINUX_S_IWOTH 00002 449#define LINUX_S_IXOTH 00001 450 451#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 452#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 453#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 454#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 455#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 456#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 457#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 458 459/* 460 * ext2 size of an inode 461 */ 462#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 463 464/* 465 * ext2_icount_t abstraction 466 */ 467#define EXT2_ICOUNT_OPT_INCREMENT 0x01 468 469typedef struct ext2_icount *ext2_icount_t; 470 471/* 472 * Flags for ext2fs_bmap 473 */ 474#define BMAP_ALLOC 0x0001 475#define BMAP_SET 0x0002 476 477/* 478 * Returned flags from ext2fs_bmap 479 */ 480#define BMAP_RET_UNINIT 0x0001 481 482/* 483 * Flags for imager.c functions 484 */ 485#define IMAGER_FLAG_INODEMAP 1 486#define IMAGER_FLAG_SPARSEWRITE 2 487 488/* 489 * For checking structure magic numbers... 490 */ 491 492#define EXT2_CHECK_MAGIC(struct, code) \ 493 if ((struct)->magic != (code)) return (code) 494 495 496/* 497 * For ext2 compression support 498 */ 499#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 500#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 501 502/* 503 * Features supported by this version of the library 504 */ 505#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 506 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 507 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 508 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 509 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 510 EXT2_FEATURE_COMPAT_EXT_ATTR) 511 512/* This #ifdef is temporary until compression is fully supported */ 513#ifdef ENABLE_COMPRESSION 514#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 515/* If the below warning bugs you, then have 516 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 517 environment at configure time. */ 518 #warning "Compression support is experimental" 519#endif 520#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 521 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 522 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 523 EXT2_FEATURE_INCOMPAT_META_BG|\ 524 EXT3_FEATURE_INCOMPAT_RECOVER|\ 525 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 526 EXT4_FEATURE_INCOMPAT_FLEX_BG) 527#else 528#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 529 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 530 EXT2_FEATURE_INCOMPAT_META_BG|\ 531 EXT3_FEATURE_INCOMPAT_RECOVER|\ 532 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 533 EXT4_FEATURE_INCOMPAT_FLEX_BG) 534#endif 535#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 536 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 537 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 538 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 539 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 540 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 541 542/* 543 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 544 * to ext2fs_openfs() 545 */ 546#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 547#define EXT2_LIB_SOFTSUPP_RO_COMPAT (0) 548 549/* 550 * function prototypes 551 */ 552 553/* alloc.c */ 554extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 555 ext2fs_inode_bitmap map, ext2_ino_t *ret); 556extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 557 ext2fs_block_bitmap map, blk_t *ret); 558extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 559 blk_t finish, int num, 560 ext2fs_block_bitmap map, 561 blk_t *ret); 562extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 563 char *block_buf, blk_t *ret); 564extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 565 errcode_t (*func)(ext2_filsys fs, 566 blk64_t goal, 567 blk64_t *ret), 568 errcode_t (**old)(ext2_filsys fs, 569 blk64_t goal, 570 blk64_t *ret)); 571 572/* alloc_sb.c */ 573extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 574 dgrp_t group, 575 ext2fs_block_bitmap bmap); 576extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 577 void (*func)(ext2_filsys fs, 578 blk64_t blk, 579 int inuse), 580 void (**old)(ext2_filsys fs, 581 blk64_t blk, 582 int inuse)); 583 584/* alloc_stats.c */ 585void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 586void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 587 int inuse, int isdir); 588void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 589 590/* alloc_tables.c */ 591extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 592extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 593 ext2fs_block_bitmap bmap); 594 595/* badblocks.c */ 596extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 597extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 598extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 599extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 600extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 601 ext2_u32_iterate *ret); 602extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 603extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 604extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 605extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 606 607extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 608 int size); 609extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 610 blk_t blk); 611extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 612 blk_t blk); 613extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 614extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 615extern errcode_t 616 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 617 ext2_badblocks_iterate *ret); 618extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 619 blk_t *blk); 620extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 621extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 622 ext2_badblocks_list *dest); 623extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 624 ext2_badblocks_list bb2); 625extern int ext2fs_u32_list_count(ext2_u32_list bb); 626 627/* bb_compat */ 628extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 629extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 630extern int badblocks_list_test(badblocks_list bb, blk_t blk); 631extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 632 badblocks_iterate *ret); 633extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 634extern void badblocks_list_iterate_end(badblocks_iterate iter); 635extern void badblocks_list_free(badblocks_list bb); 636 637/* bb_inode.c */ 638extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 639 ext2_badblocks_list bb_list); 640 641/* bitmaps.c */ 642extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 643extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 644extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 645 ext2fs_generic_bitmap *dest); 646extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 647extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 648extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 649extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 650extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 651 const char *descr, 652 ext2fs_block_bitmap *ret); 653extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 654 const char *descr, 655 ext2fs_inode_bitmap *ret); 656extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 657 ext2_ino_t end, ext2_ino_t *oend); 658extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 659 blk_t end, blk_t *oend); 660extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 661extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 662extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 663extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 664extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 665 ext2fs_inode_bitmap bmap); 666extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 667 ext2fs_block_bitmap bmap); 668extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 669 ext2fs_block_bitmap bm2); 670extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 671 ext2fs_inode_bitmap bm2); 672extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 673 ext2_ino_t start, unsigned int num, 674 void *in); 675extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 676 ext2_ino_t start, unsigned int num, 677 void *out); 678extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 679 blk_t start, unsigned int num, 680 void *in); 681extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 682 blk_t start, unsigned int num, 683 void *out); 684 685/* blknum.c */ 686extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 687extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 688extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 689extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 690 struct ext2_inode *inode); 691extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 692 struct ext2_inode *inode); 693extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 694extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 695 blk64_t blk); 696extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 697 blk64_t blk); 698extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 699extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 700 blk64_t blk); 701extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 702 blk64_t blk); 703extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 704extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 705 blk64_t blk); 706extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 707 blk64_t blk); 708/* Block group descriptor accessor functions */ 709extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 710 struct ext2_group_desc *gdp, 711 dgrp_t group); 712extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 713extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 714 blk64_t blk); 715extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 716extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 717 blk64_t blk); 718extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 719extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 720 blk64_t blk); 721extern blk64_t ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 722extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 723 blk64_t blk); 724extern blk64_t ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 725extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 726 blk64_t blk); 727extern blk64_t ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 728extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 729 blk64_t blk); 730extern blk64_t ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 731extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 732 blk64_t blk); 733extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 734extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 735extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, 736 __u16 bg_flags); 737extern int ext2fs_bg_flag_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 738extern void ext2fs_bg_flag_set(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 739extern void ext2fs_bg_flag_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 740extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 741extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 742extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 743extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 744 745/* block.c */ 746extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 747 ext2_ino_t ino, 748 int flags, 749 char *block_buf, 750 int (*func)(ext2_filsys fs, 751 blk_t *blocknr, 752 int blockcnt, 753 void *priv_data), 754 void *priv_data); 755errcode_t ext2fs_block_iterate2(ext2_filsys fs, 756 ext2_ino_t ino, 757 int flags, 758 char *block_buf, 759 int (*func)(ext2_filsys fs, 760 blk_t *blocknr, 761 e2_blkcnt_t blockcnt, 762 blk_t ref_blk, 763 int ref_offset, 764 void *priv_data), 765 void *priv_data); 766 767/* bmap.c */ 768extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 769 struct ext2_inode *inode, 770 char *block_buf, int bmap_flags, 771 blk_t block, blk_t *phys_blk); 772extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 773 struct ext2_inode *inode, 774 char *block_buf, int bmap_flags, blk64_t block, 775 int *ret_flags, blk64_t *phys_blk); 776 777#if 0 778/* bmove.c */ 779extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 780 ext2fs_block_bitmap reserve, 781 ext2fs_block_bitmap alloc_map, 782 int flags); 783#endif 784 785/* check_desc.c */ 786extern errcode_t ext2fs_check_desc(ext2_filsys fs); 787 788/* closefs.c */ 789extern errcode_t ext2fs_close(ext2_filsys fs); 790extern errcode_t ext2fs_flush(ext2_filsys fs); 791extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 792extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 793 dgrp_t group, 794 blk_t *ret_super_blk, 795 blk_t *ret_old_desc_blk, 796 blk_t *ret_new_desc_blk, 797 int *ret_meta_bg); 798extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 799 800/* csum.c */ 801extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 802extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 803extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 804 805/* dblist.c */ 806 807extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 808extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 809extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 810 blk_t blk, int blockcnt); 811extern void ext2fs_dblist_sort(ext2_dblist dblist, 812 EXT2_QSORT_TYPE (*sortfunc)(const void *, 813 const void *)); 814extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 815 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 816 void *priv_data), 817 void *priv_data); 818extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 819 blk_t blk, int blockcnt); 820extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 821 ext2_dblist *dest); 822extern int ext2fs_dblist_count(ext2_dblist dblist); 823extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 824 struct ext2_db_entry **entry); 825extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 826 827/* dblist_dir.c */ 828extern errcode_t 829 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 830 int flags, 831 char *block_buf, 832 int (*func)(ext2_ino_t dir, 833 int entry, 834 struct ext2_dir_entry *dirent, 835 int offset, 836 int blocksize, 837 char *buf, 838 void *priv_data), 839 void *priv_data); 840 841/* dirblock.c */ 842extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 843 void *buf); 844extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 845 void *buf, int flags); 846extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 847 void *buf, int flags); 848extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 849 void *buf); 850extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 851 void *buf, int flags); 852extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 853 void *buf, int flags); 854 855/* dirhash.c */ 856extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 857 const __u32 *seed, 858 ext2_dirhash_t *ret_hash, 859 ext2_dirhash_t *ret_minor_hash); 860 861 862/* dir_iterate.c */ 863extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 864 struct ext2_dir_entry *dirent, 865 unsigned int *rec_len); 866extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 867 unsigned int len, 868 struct ext2_dir_entry *dirent); 869extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 870 ext2_ino_t dir, 871 int flags, 872 char *block_buf, 873 int (*func)(struct ext2_dir_entry *dirent, 874 int offset, 875 int blocksize, 876 char *buf, 877 void *priv_data), 878 void *priv_data); 879extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 880 ext2_ino_t dir, 881 int flags, 882 char *block_buf, 883 int (*func)(ext2_ino_t dir, 884 int entry, 885 struct ext2_dir_entry *dirent, 886 int offset, 887 int blocksize, 888 char *buf, 889 void *priv_data), 890 void *priv_data); 891 892/* dupfs.c */ 893extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 894 895/* expanddir.c */ 896extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 897 898/* ext_attr.c */ 899extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 900 void *data); 901extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 902extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 903 void *buf); 904extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 905 char *block_buf, 906 int adjust, __u32 *newcount); 907 908/* extent.c */ 909extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 910extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 911 ext2_extent_handle_t *handle); 912extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 913 struct ext2_inode *inode, 914 ext2_extent_handle_t *ret_handle); 915extern void ext2fs_extent_free(ext2_extent_handle_t handle); 916extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 917 int flags, struct ext2fs_extent *extent); 918extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 919 struct ext2fs_extent *extent); 920extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 921 struct ext2fs_extent *extent); 922extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 923 blk64_t logical, blk64_t physical, 924 int flags); 925extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 926extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 927 struct ext2_extent_info *info); 928extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 929 blk64_t blk); 930 931/* fileio.c */ 932extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 933 struct ext2_inode *inode, 934 int flags, ext2_file_t *ret); 935extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 936 int flags, ext2_file_t *ret); 937extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 938extern errcode_t ext2fs_file_close(ext2_file_t file); 939extern errcode_t ext2fs_file_flush(ext2_file_t file); 940extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 941 unsigned int wanted, unsigned int *got); 942extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 943 unsigned int nbytes, unsigned int *written); 944extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 945 int whence, __u64 *ret_pos); 946extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 947 int whence, ext2_off_t *ret_pos); 948errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 949extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 950extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 951 952/* finddev.c */ 953extern char *ext2fs_find_block_device(dev_t device); 954 955/* flushb.c */ 956extern errcode_t ext2fs_sync_device(int fd, int flushb); 957 958/* freefs.c */ 959extern void ext2fs_free(ext2_filsys fs); 960extern void ext2fs_free_dblist(ext2_dblist dblist); 961extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 962extern void ext2fs_u32_list_free(ext2_u32_list bb); 963 964/* gen_bitmap.c */ 965extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 966extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 967 __u32 start, __u32 end, 968 __u32 real_end, 969 const char *descr, char *init_map, 970 ext2fs_generic_bitmap *ret); 971extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 972 __u32 end, 973 __u32 real_end, 974 const char *descr, 975 ext2fs_generic_bitmap *ret); 976extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 977 ext2fs_generic_bitmap *dest); 978extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 979extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 980 errcode_t magic, 981 errcode_t neq, 982 ext2_ino_t end, 983 ext2_ino_t *oend); 984extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 985extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 986 __u32 new_end, 987 __u32 new_real_end, 988 ext2fs_generic_bitmap bmap); 989extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 990 ext2fs_generic_bitmap bm1, 991 ext2fs_generic_bitmap bm2); 992extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 993 errcode_t magic, 994 __u32 start, __u32 num, 995 void *out); 996extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 997 errcode_t magic, 998 __u32 start, __u32 num, 999 void *in); 1000 1001/* getsize.c */ 1002extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1003 blk_t *retblocks); 1004extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1005 blk64_t *retblocks); 1006 1007/* getsectsize.c */ 1008errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1009 1010/* i_block.c */ 1011errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1012 blk64_t num_blocks); 1013errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1014 blk64_t num_blocks); 1015errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1016 1017/* imager.c */ 1018extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1019extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1020extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1021extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1022extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1023extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1024 1025/* ind_block.c */ 1026errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1027errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1028 1029/* initialize.c */ 1030extern errcode_t ext2fs_initialize(const char *name, int flags, 1031 struct ext2_super_block *param, 1032 io_manager manager, ext2_filsys *ret_fs); 1033 1034/* icount.c */ 1035extern void ext2fs_free_icount(ext2_icount_t icount); 1036extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1037 int flags, ext2_icount_t *ret); 1038extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1039 unsigned int size, 1040 ext2_icount_t hint, ext2_icount_t *ret); 1041extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1042 unsigned int size, 1043 ext2_icount_t *ret); 1044extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1045 __u16 *ret); 1046extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1047 __u16 *ret); 1048extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1049 __u16 *ret); 1050extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1051 __u16 count); 1052extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1053errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1054 1055/* inode.c */ 1056extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1057extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1058 ext2_ino_t *ino, 1059 struct ext2_inode *inode, 1060 int bufsize); 1061extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1062 ext2_inode_scan *ret_scan); 1063extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1064extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1065 struct ext2_inode *inode); 1066extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1067 int group); 1068extern void ext2fs_set_inode_callback 1069 (ext2_inode_scan scan, 1070 errcode_t (*done_group)(ext2_filsys fs, 1071 ext2_inode_scan scan, 1072 dgrp_t group, 1073 void * priv_data), 1074 void *done_group_data); 1075extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1076 int clear_flags); 1077extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1078 struct ext2_inode * inode, 1079 int bufsize); 1080extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1081 struct ext2_inode * inode); 1082extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1083 struct ext2_inode * inode, 1084 int bufsize); 1085extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1086 struct ext2_inode * inode); 1087extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1088 struct ext2_inode * inode); 1089extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1090extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1091 1092/* inode_io.c */ 1093extern io_manager inode_io_manager; 1094extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1095 char **name); 1096extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1097 struct ext2_inode *inode, 1098 char **name); 1099 1100/* ismounted.c */ 1101extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1102extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1103 char *mtpt, int mtlen); 1104 1105/* namei.c */ 1106extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1107 int namelen, char *buf, ext2_ino_t *inode); 1108extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1109 const char *name, ext2_ino_t *inode); 1110errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1111 const char *name, ext2_ino_t *inode); 1112extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1113 ext2_ino_t inode, ext2_ino_t *res_inode); 1114 1115/* native.c */ 1116int ext2fs_native_flag(void); 1117 1118/* newdir.c */ 1119extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1120 ext2_ino_t parent_ino, char **block); 1121 1122/* mkdir.c */ 1123extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1124 const char *name); 1125 1126/* mkjournal.c */ 1127extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1128 blk_t *ret_blk, int *ret_count); 1129extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1130 __u32 size, int flags, 1131 char **ret_jsb); 1132extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1133 ext2_filsys journal_dev); 1134extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1135 int flags); 1136extern int ext2fs_default_journal_size(__u64 blocks); 1137 1138/* openfs.c */ 1139extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1140 unsigned int block_size, io_manager manager, 1141 ext2_filsys *ret_fs); 1142extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1143 int flags, int superblock, 1144 unsigned int block_size, io_manager manager, 1145 ext2_filsys *ret_fs); 1146extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1147 dgrp_t i); 1148errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1149errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1150errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1151 1152/* get_pathname.c */ 1153extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1154 char **name); 1155 1156/* link.c */ 1157errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1158 ext2_ino_t ino, int flags); 1159errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1160 ext2_ino_t ino, int flags); 1161 1162/* read_bb.c */ 1163extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1164 ext2_badblocks_list *bb_list); 1165 1166/* read_bb_file.c */ 1167extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1168 ext2_badblocks_list *bb_list, 1169 void *priv_data, 1170 void (*invalid)(ext2_filsys fs, 1171 blk_t blk, 1172 char *badstr, 1173 void *priv_data)); 1174extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1175 ext2_badblocks_list *bb_list, 1176 void (*invalid)(ext2_filsys fs, 1177 blk_t blk)); 1178 1179/* res_gdt.c */ 1180extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1181 1182/* swapfs.c */ 1183extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1184 int has_header); 1185extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1186 struct ext2_ext_attr_header *from_hdr); 1187extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1188 struct ext2_ext_attr_entry *from_entry); 1189extern void ext2fs_swap_super(struct ext2_super_block * super); 1190extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1191extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1192 struct ext2_inode_large *f, int hostorder, 1193 int bufsize); 1194extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1195 struct ext2_inode *f, int hostorder); 1196 1197/* valid_blk.c */ 1198extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1199 1200/* version.c */ 1201extern int ext2fs_parse_version_string(const char *ver_string); 1202extern int ext2fs_get_library_version(const char **ver_string, 1203 const char **date_string); 1204 1205/* write_bb_file.c */ 1206extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1207 unsigned int flags, 1208 FILE *f); 1209 1210 1211/* inline functions */ 1212extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1213extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1214extern errcode_t ext2fs_free_mem(void *ptr); 1215extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1216 unsigned long size, void *ptr); 1217extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1218extern void ext2fs_mark_changed(ext2_filsys fs); 1219extern int ext2fs_test_changed(ext2_filsys fs); 1220extern void ext2fs_mark_valid(ext2_filsys fs); 1221extern void ext2fs_unmark_valid(ext2_filsys fs); 1222extern int ext2fs_test_valid(ext2_filsys fs); 1223extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1224extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1225extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1226extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1227extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1228extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1229extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1230extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1231extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1232 struct ext2_inode *inode); 1233extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1234 1235/* 1236 * The actual inlined functions definitions themselves... 1237 * 1238 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1239 * functions at all! 1240 */ 1241#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1242#ifdef INCLUDE_INLINE_FUNCS 1243#define _INLINE_ extern 1244#else 1245#ifdef __GNUC__ 1246#define _INLINE_ extern __inline__ 1247#else /* For Watcom C */ 1248#define _INLINE_ extern inline 1249#endif 1250#endif 1251 1252#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1253#include <string.h> 1254/* 1255 * Allocate memory 1256 */ 1257_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1258{ 1259 void *pp; 1260 1261 pp = malloc(size); 1262 if (!pp) 1263 return EXT2_ET_NO_MEMORY; 1264 memcpy(ptr, &pp, sizeof (pp)); 1265 return 0; 1266} 1267 1268_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1269{ 1270 if (count && (-1UL)/count<size) 1271 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1272 return ext2fs_get_mem(count*size, ptr); 1273} 1274 1275/* 1276 * Free memory 1277 */ 1278_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1279{ 1280 void *p; 1281 1282 memcpy(&p, ptr, sizeof(p)); 1283 free(p); 1284 p = 0; 1285 memcpy(ptr, &p, sizeof(p)); 1286 return 0; 1287} 1288 1289/* 1290 * Resize memory 1291 */ 1292_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1293 unsigned long size, void *ptr) 1294{ 1295 void *p; 1296 1297 /* Use "memcpy" for pointer assignments here to avoid problems 1298 * with C99 strict type aliasing rules. */ 1299 memcpy(&p, ptr, sizeof(p)); 1300 p = realloc(p, size); 1301 if (!p) 1302 return EXT2_ET_NO_MEMORY; 1303 memcpy(ptr, &p, sizeof(p)); 1304 return 0; 1305} 1306#endif /* Custom memory routines */ 1307 1308/* 1309 * Mark a filesystem superblock as dirty 1310 */ 1311_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1312{ 1313 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1314} 1315 1316/* 1317 * Mark a filesystem as changed 1318 */ 1319_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1320{ 1321 fs->flags |= EXT2_FLAG_CHANGED; 1322} 1323 1324/* 1325 * Check to see if a filesystem has changed 1326 */ 1327_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1328{ 1329 return (fs->flags & EXT2_FLAG_CHANGED); 1330} 1331 1332/* 1333 * Mark a filesystem as valid 1334 */ 1335_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1336{ 1337 fs->flags |= EXT2_FLAG_VALID; 1338} 1339 1340/* 1341 * Mark a filesystem as NOT valid 1342 */ 1343_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1344{ 1345 fs->flags &= ~EXT2_FLAG_VALID; 1346} 1347 1348/* 1349 * Check to see if a filesystem is valid 1350 */ 1351_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1352{ 1353 return (fs->flags & EXT2_FLAG_VALID); 1354} 1355 1356/* 1357 * Mark the inode bitmap as dirty 1358 */ 1359_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1360{ 1361 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1362} 1363 1364/* 1365 * Mark the block bitmap as dirty 1366 */ 1367_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1368{ 1369 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1370} 1371 1372/* 1373 * Check to see if a filesystem's inode bitmap is dirty 1374 */ 1375_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1376{ 1377 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1378} 1379 1380/* 1381 * Check to see if a filesystem's block bitmap is dirty 1382 */ 1383_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1384{ 1385 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1386} 1387 1388/* 1389 * Return the group # of a block 1390 */ 1391_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1392{ 1393 return ext2fs_group_of_blk2(fs, blk); 1394} 1395/* 1396 * Return the group # of an inode number 1397 */ 1398_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1399{ 1400 return (ino - 1) / fs->super->s_inodes_per_group; 1401} 1402 1403/* 1404 * Return the first block (inclusive) in a group 1405 */ 1406_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1407{ 1408 return ext2fs_group_first_block2(fs, group); 1409} 1410 1411/* 1412 * Return the last block (inclusive) in a group 1413 */ 1414_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1415{ 1416 return ext2fs_group_last_block2(fs, group); 1417} 1418 1419_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1420 struct ext2_inode *inode) 1421{ 1422 return ext2fs_inode_data_blocks2(fs, inode); 1423} 1424 1425/* 1426 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1427 */ 1428_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1429{ 1430 if (!a) 1431 return 0; 1432 return ((a - 1) / b) + 1; 1433} 1434#undef _INLINE_ 1435#endif 1436 1437#ifdef __cplusplus 1438} 1439#endif 1440 1441#endif /* _EXT2FS_EXT2FS_H */ 1442