ext2fs.h revision cf828f1a72ec1eb0c1e819307137879447c909b7
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 Public 8 * License. 9 * %End-Header% 10 */ 11 12#ifndef _EXT2FS_EXT2FS_H 13#define _EXT2FS_EXT2FS_H 14 15#ifdef __GNUC__ 16#define EXT2FS_ATTR(x) __attribute__(x) 17#else 18#define EXT2FS_ATTR(x) 19#endif 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25/* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29#define NO_INLINE_FUNCS 30#endif 31 32/* 33 * Where the master copy of the superblock is located, and how big 34 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 35 * the size of the superblock structure is not necessarily trustworthy 36 * (some versions have the padding set up so that the superblock is 37 * 1032 bytes long). 38 */ 39#define SUPERBLOCK_OFFSET 1024 40#define SUPERBLOCK_SIZE 1024 41 42/* 43 * The last ext2fs revision level that this version of the library is 44 * able to support. 45 */ 46#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 47 48#ifdef HAVE_SYS_TYPES_H 49#include <sys/types.h> 50#endif 51 52#include <stdio.h> 53#include <stdlib.h> 54#include <string.h> 55 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#define EXT2_FLAG_64BITS 0x20000 177#define EXT2_FLAG_PRINT_PROGRESS 0x40000 178 179/* 180 * Special flag in the ext2 inode i_flag field that means that this is 181 * a new inode. (So that ext2_write_inode() can clear extra fields.) 182 */ 183#define EXT2_NEW_INODE_FL 0x80000000 184 185/* 186 * Flags for mkjournal 187 * 188 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 189 */ 190#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 191 192struct struct_ext2_filsys { 193 errcode_t magic; 194 io_channel io; 195 int flags; 196 char * device_name; 197 struct ext2_super_block * super; 198 unsigned int blocksize; 199 int fragsize; 200 dgrp_t group_desc_count; 201 unsigned long desc_blocks; 202 struct ext2_group_desc * group_desc; 203 int inode_blocks_per_group; 204 ext2fs_inode_bitmap inode_map; 205 ext2fs_block_bitmap block_map; 206 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 207 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 208 errcode_t (*write_bitmaps)(ext2_filsys fs); 209 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 210 struct ext2_inode *inode); 211 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 212 struct ext2_inode *inode); 213 ext2_badblocks_list badblocks; 214 ext2_dblist dblist; 215 __u32 stride; /* for mke2fs */ 216 struct ext2_super_block * orig_super; 217 struct ext2_image_hdr * image_header; 218 __u32 umask; 219 time_t now; 220 /* 221 * Reserved for future expansion 222 */ 223 __u32 reserved[7]; 224 225 /* 226 * Reserved for the use of the calling application. 227 */ 228 void * priv_data; 229 230 /* 231 * Inode cache 232 */ 233 struct ext2_inode_cache *icache; 234 io_channel image_io; 235 236 /* 237 * More callback functions 238 */ 239 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 240 blk64_t *ret); 241 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 242}; 243 244#if EXT2_FLAT_INCLUDES 245#include "e2_bitops.h" 246#else 247#include <ext2fs/bitops.h> 248#endif 249 250/* 251 * Return flags for the block iterator functions 252 */ 253#define BLOCK_CHANGED 1 254#define BLOCK_ABORT 2 255#define BLOCK_ERROR 4 256 257/* 258 * Block interate flags 259 * 260 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 261 * function should be called on blocks where the block number is zero. 262 * This is used by ext2fs_expand_dir() to be able to add a new block 263 * to an inode. It can also be used for programs that want to be able 264 * to deal with files that contain "holes". 265 * 266 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 267 * the indirect, doubly indirect, etc. blocks should be called after 268 * all of the blocks containined in the indirect blocks are processed. 269 * This is useful if you are going to be deallocating blocks from an 270 * inode. 271 * 272 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 273 * called for data blocks only. 274 * 275 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 276 * modify returned block number. 277 * 278 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 279 * ext2fs_block_iterate2 that large files won't be accepted. 280 */ 281#define BLOCK_FLAG_APPEND 1 282#define BLOCK_FLAG_HOLE 1 283#define BLOCK_FLAG_DEPTH_TRAVERSE 2 284#define BLOCK_FLAG_DATA_ONLY 4 285#define BLOCK_FLAG_READ_ONLY 8 286 287#define BLOCK_FLAG_NO_LARGE 0x1000 288 289/* 290 * Magic "block count" return values for the block iterator function. 291 */ 292#define BLOCK_COUNT_IND (-1) 293#define BLOCK_COUNT_DIND (-2) 294#define BLOCK_COUNT_TIND (-3) 295#define BLOCK_COUNT_TRANSLATOR (-4) 296 297#if 0 298/* 299 * Flags for ext2fs_move_blocks 300 */ 301#define EXT2_BMOVE_GET_DBLIST 0x0001 302#define EXT2_BMOVE_DEBUG 0x0002 303#endif 304 305/* 306 * Generic (non-filesystem layout specific) extents structure 307 */ 308 309#define EXT2_EXTENT_FLAGS_LEAF 0x0001 310#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 311#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 312 313struct ext2fs_extent { 314 blk64_t e_pblk; /* first physical block */ 315 blk64_t e_lblk; /* first logical block extent covers */ 316 __u32 e_len; /* number of blocks covered by extent */ 317 __u32 e_flags; /* extent flags */ 318}; 319 320typedef struct ext2_extent_handle *ext2_extent_handle_t; 321typedef struct ext2_extent_path *ext2_extent_path_t; 322 323/* 324 * Flags used by ext2fs_extent_get() 325 */ 326#define EXT2_EXTENT_CURRENT 0x0000 327#define EXT2_EXTENT_MOVE_MASK 0x000F 328#define EXT2_EXTENT_ROOT 0x0001 329#define EXT2_EXTENT_LAST_LEAF 0x0002 330#define EXT2_EXTENT_FIRST_SIB 0x0003 331#define EXT2_EXTENT_LAST_SIB 0x0004 332#define EXT2_EXTENT_NEXT_SIB 0x0005 333#define EXT2_EXTENT_PREV_SIB 0x0006 334#define EXT2_EXTENT_NEXT_LEAF 0x0007 335#define EXT2_EXTENT_PREV_LEAF 0x0008 336#define EXT2_EXTENT_NEXT 0x0009 337#define EXT2_EXTENT_PREV 0x000A 338#define EXT2_EXTENT_UP 0x000B 339#define EXT2_EXTENT_DOWN 0x000C 340#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 341 342/* 343 * Flags used by ext2fs_extent_insert() 344 */ 345#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 346#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 347 348/* 349 * Flags used by ext2fs_extent_delete() 350 */ 351#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 352 353/* 354 * Flags used by ext2fs_extent_set_bmap() 355 */ 356#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 357 358/* 359 * Data structure returned by ext2fs_extent_get_info() 360 */ 361struct ext2_extent_info { 362 int curr_entry; 363 int curr_level; 364 int num_entries; 365 int max_entries; 366 int max_depth; 367 int bytes_avail; 368 blk64_t max_lblk; 369 blk64_t max_pblk; 370 __u32 max_len; 371 __u32 max_uninit_len; 372}; 373 374/* 375 * Flags for directory block reading and writing functions 376 */ 377#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 378 379/* 380 * Return flags for the directory iterator functions 381 */ 382#define DIRENT_CHANGED 1 383#define DIRENT_ABORT 2 384#define DIRENT_ERROR 3 385 386/* 387 * Directory iterator flags 388 */ 389 390#define DIRENT_FLAG_INCLUDE_EMPTY 1 391#define DIRENT_FLAG_INCLUDE_REMOVED 2 392 393#define DIRENT_DOT_FILE 1 394#define DIRENT_DOT_DOT_FILE 2 395#define DIRENT_OTHER_FILE 3 396#define DIRENT_DELETED_FILE 4 397 398/* 399 * Inode scan definitions 400 */ 401typedef struct ext2_struct_inode_scan *ext2_inode_scan; 402 403/* 404 * ext2fs_scan flags 405 */ 406#define EXT2_SF_CHK_BADBLOCKS 0x0001 407#define EXT2_SF_BAD_INODE_BLK 0x0002 408#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 409#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 410#define EXT2_SF_DO_LAZY 0x0010 411 412/* 413 * ext2fs_check_if_mounted flags 414 */ 415#define EXT2_MF_MOUNTED 1 416#define EXT2_MF_ISROOT 2 417#define EXT2_MF_READONLY 4 418#define EXT2_MF_SWAP 8 419#define EXT2_MF_BUSY 16 420 421/* 422 * Ext2/linux mode flags. We define them here so that we don't need 423 * to depend on the OS's sys/stat.h, since we may be compiling on a 424 * non-Linux system. 425 */ 426#define LINUX_S_IFMT 00170000 427#define LINUX_S_IFSOCK 0140000 428#define LINUX_S_IFLNK 0120000 429#define LINUX_S_IFREG 0100000 430#define LINUX_S_IFBLK 0060000 431#define LINUX_S_IFDIR 0040000 432#define LINUX_S_IFCHR 0020000 433#define LINUX_S_IFIFO 0010000 434#define LINUX_S_ISUID 0004000 435#define LINUX_S_ISGID 0002000 436#define LINUX_S_ISVTX 0001000 437 438#define LINUX_S_IRWXU 00700 439#define LINUX_S_IRUSR 00400 440#define LINUX_S_IWUSR 00200 441#define LINUX_S_IXUSR 00100 442 443#define LINUX_S_IRWXG 00070 444#define LINUX_S_IRGRP 00040 445#define LINUX_S_IWGRP 00020 446#define LINUX_S_IXGRP 00010 447 448#define LINUX_S_IRWXO 00007 449#define LINUX_S_IROTH 00004 450#define LINUX_S_IWOTH 00002 451#define LINUX_S_IXOTH 00001 452 453#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 454#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 455#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 456#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 457#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 458#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 459#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 460 461/* 462 * ext2 size of an inode 463 */ 464#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 465 466/* 467 * ext2_icount_t abstraction 468 */ 469#define EXT2_ICOUNT_OPT_INCREMENT 0x01 470 471typedef struct ext2_icount *ext2_icount_t; 472 473/* 474 * Flags for ext2fs_bmap 475 */ 476#define BMAP_ALLOC 0x0001 477#define BMAP_SET 0x0002 478 479/* 480 * Returned flags from ext2fs_bmap 481 */ 482#define BMAP_RET_UNINIT 0x0001 483 484/* 485 * Flags for imager.c functions 486 */ 487#define IMAGER_FLAG_INODEMAP 1 488#define IMAGER_FLAG_SPARSEWRITE 2 489 490/* 491 * For checking structure magic numbers... 492 */ 493 494#define EXT2_CHECK_MAGIC(struct, code) \ 495 if ((struct)->magic != (code)) return (code) 496 497 498/* 499 * For ext2 compression support 500 */ 501#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 502#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 503 504/* 505 * Features supported by this version of the library 506 */ 507#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 508 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 509 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 510 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 511 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 512 EXT2_FEATURE_COMPAT_EXT_ATTR) 513 514/* This #ifdef is temporary until compression is fully supported */ 515#ifdef ENABLE_COMPRESSION 516#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 517/* If the below warning bugs you, then have 518 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 519 environment at configure time. */ 520 #warning "Compression support is experimental" 521#endif 522#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 523 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 524 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 525 EXT2_FEATURE_INCOMPAT_META_BG|\ 526 EXT3_FEATURE_INCOMPAT_RECOVER|\ 527 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 528 EXT4_FEATURE_INCOMPAT_FLEX_BG) 529#else 530#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 531 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 532 EXT2_FEATURE_INCOMPAT_META_BG|\ 533 EXT3_FEATURE_INCOMPAT_RECOVER|\ 534 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 535 EXT4_FEATURE_INCOMPAT_FLEX_BG) 536#endif 537#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 538 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 539 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 540 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 541 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 542 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 543 544/* 545 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 546 * to ext2fs_openfs() 547 */ 548#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 549#define EXT2_LIB_SOFTSUPP_RO_COMPAT (0) 550 551/* 552 * function prototypes 553 */ 554 555/* alloc.c */ 556extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 557 ext2fs_inode_bitmap map, ext2_ino_t *ret); 558extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 559 ext2fs_block_bitmap map, blk_t *ret); 560extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 561 ext2fs_block_bitmap map, blk64_t *ret); 562extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 563 blk_t finish, int num, 564 ext2fs_block_bitmap map, 565 blk_t *ret); 566extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 567 blk64_t finish, int num, 568 ext2fs_block_bitmap map, 569 blk64_t *ret); 570extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 571 char *block_buf, blk_t *ret); 572extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 573 char *block_buf, blk64_t *ret); 574extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 575 errcode_t (*func)(ext2_filsys fs, 576 blk64_t goal, 577 blk64_t *ret), 578 errcode_t (**old)(ext2_filsys fs, 579 blk64_t goal, 580 blk64_t *ret)); 581 582/* alloc_sb.c */ 583extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 584 dgrp_t group, 585 ext2fs_block_bitmap bmap); 586extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 587 void (*func)(ext2_filsys fs, 588 blk64_t blk, 589 int inuse), 590 void (**old)(ext2_filsys fs, 591 blk64_t blk, 592 int inuse)); 593 594/* alloc_stats.c */ 595void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 596void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 597 int inuse, int isdir); 598void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 599void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 600 601/* alloc_tables.c */ 602extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 603extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 604 ext2fs_block_bitmap bmap); 605 606/* badblocks.c */ 607extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 608extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 609extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 610extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 611extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 612 ext2_u32_iterate *ret); 613extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 614extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 615extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 616extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 617 618extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 619 int size); 620extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 621 blk_t blk); 622extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 623 blk_t blk); 624extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 625extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 626extern errcode_t 627 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 628 ext2_badblocks_iterate *ret); 629extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 630 blk_t *blk); 631extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 632extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 633 ext2_badblocks_list *dest); 634extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 635 ext2_badblocks_list bb2); 636extern int ext2fs_u32_list_count(ext2_u32_list bb); 637 638/* bb_compat */ 639extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 640extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 641extern int badblocks_list_test(badblocks_list bb, blk_t blk); 642extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 643 badblocks_iterate *ret); 644extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 645extern void badblocks_list_iterate_end(badblocks_iterate iter); 646extern void badblocks_list_free(badblocks_list bb); 647 648/* bb_inode.c */ 649extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 650 ext2_badblocks_list bb_list); 651 652/* bitmaps.c */ 653extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 654extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 655extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 656 ext2fs_generic_bitmap *dest); 657extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 658extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 659extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 660extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 661extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 662 const char *descr, 663 ext2fs_block_bitmap *ret); 664extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 665 const char *descr, 666 ext2fs_inode_bitmap *ret); 667extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 668 ext2_ino_t end, ext2_ino_t *oend); 669extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 670 blk_t end, blk_t *oend); 671extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 672 blk64_t end, blk64_t *oend); 673extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 674extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 675extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 676extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 677extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 678 ext2fs_inode_bitmap bmap); 679extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 680 __u64 new_real_end, 681 ext2fs_inode_bitmap bmap); 682extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 683 ext2fs_block_bitmap bmap); 684extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 685 __u64 new_real_end, 686 ext2fs_block_bitmap bmap); 687extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 688 ext2fs_block_bitmap bm2); 689extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 690 ext2fs_inode_bitmap bm2); 691extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 692 ext2_ino_t start, unsigned int num, 693 void *in); 694extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 695 __u64 start, size_t num, 696 void *in); 697extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 698 ext2_ino_t start, unsigned int num, 699 void *out); 700extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 701 __u64 start, size_t num, 702 void *out); 703extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 704 blk_t start, unsigned int num, 705 void *in); 706extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 707 blk64_t start, size_t num, 708 void *in); 709extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 710 blk_t start, unsigned int num, 711 void *out); 712extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 713 blk64_t start, size_t num, 714 void *out); 715 716/* blknum.c */ 717extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 718extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 719extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 720extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 721 struct ext2_inode *inode); 722extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 723 struct ext2_inode *inode); 724extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 725extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 726 blk64_t blk); 727extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 728 blk64_t blk); 729extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 730extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 731 blk64_t blk); 732extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 733 blk64_t blk); 734extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 735extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 736 blk64_t blk); 737extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 738 blk64_t blk); 739/* Block group descriptor accessor functions */ 740extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 741 struct ext2_group_desc *gdp, 742 dgrp_t group); 743extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 744extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 745 blk64_t blk); 746extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 747extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 748 blk64_t blk); 749extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 750extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 751 blk64_t blk); 752extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 753extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 754 __u32 n); 755extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 756extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 757 __u32 n); 758extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 759extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 760 __u32 n); 761extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 762extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 763 __u32 n); 764extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 765extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 766extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 767extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 768extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 769extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 770extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 771extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 772extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 773 774/* block.c */ 775extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 776 ext2_ino_t ino, 777 int flags, 778 char *block_buf, 779 int (*func)(ext2_filsys fs, 780 blk_t *blocknr, 781 int blockcnt, 782 void *priv_data), 783 void *priv_data); 784errcode_t ext2fs_block_iterate2(ext2_filsys fs, 785 ext2_ino_t ino, 786 int flags, 787 char *block_buf, 788 int (*func)(ext2_filsys fs, 789 blk_t *blocknr, 790 e2_blkcnt_t blockcnt, 791 blk_t ref_blk, 792 int ref_offset, 793 void *priv_data), 794 void *priv_data); 795errcode_t ext2fs_block_iterate3(ext2_filsys fs, 796 ext2_ino_t ino, 797 int flags, 798 char *block_buf, 799 int (*func)(ext2_filsys fs, 800 blk64_t *blocknr, 801 e2_blkcnt_t blockcnt, 802 blk64_t ref_blk, 803 int ref_offset, 804 void *priv_data), 805 void *priv_data); 806 807/* bmap.c */ 808extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 809 struct ext2_inode *inode, 810 char *block_buf, int bmap_flags, 811 blk_t block, blk_t *phys_blk); 812extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 813 struct ext2_inode *inode, 814 char *block_buf, int bmap_flags, blk64_t block, 815 int *ret_flags, blk64_t *phys_blk); 816 817#if 0 818/* bmove.c */ 819extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 820 ext2fs_block_bitmap reserve, 821 ext2fs_block_bitmap alloc_map, 822 int flags); 823#endif 824 825/* check_desc.c */ 826extern errcode_t ext2fs_check_desc(ext2_filsys fs); 827 828/* closefs.c */ 829extern errcode_t ext2fs_close(ext2_filsys fs); 830extern errcode_t ext2fs_flush(ext2_filsys fs); 831extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 832extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 833 dgrp_t group, 834 blk64_t *ret_super_blk, 835 blk64_t *ret_old_desc_blk, 836 blk64_t *ret_new_desc_blk, 837 blk_t *ret_used_blks); 838extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 839 dgrp_t group, 840 blk_t *ret_super_blk, 841 blk_t *ret_old_desc_blk, 842 blk_t *ret_new_desc_blk, 843 int *ret_meta_bg); 844extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 845 846/* csum.c */ 847extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 848extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 849extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 850 851/* dblist.c */ 852 853extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 854extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 855extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 856 blk_t blk, int blockcnt); 857extern void ext2fs_dblist_sort(ext2_dblist dblist, 858 EXT2_QSORT_TYPE (*sortfunc)(const void *, 859 const void *)); 860extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 861 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 862 void *priv_data), 863 void *priv_data); 864extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 865 blk_t blk, int blockcnt); 866extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 867 ext2_dblist *dest); 868extern int ext2fs_dblist_count(ext2_dblist dblist); 869extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 870 struct ext2_db_entry **entry); 871extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 872 873/* dblist_dir.c */ 874extern errcode_t 875 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 876 int flags, 877 char *block_buf, 878 int (*func)(ext2_ino_t dir, 879 int entry, 880 struct ext2_dir_entry *dirent, 881 int offset, 882 int blocksize, 883 char *buf, 884 void *priv_data), 885 void *priv_data); 886 887/* dirblock.c */ 888extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 889 void *buf); 890extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 891 void *buf, int flags); 892extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 893 void *buf, int flags); 894extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 895 void *buf); 896extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 897 void *buf, int flags); 898extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 899 void *buf, int flags); 900 901/* dirhash.c */ 902extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 903 const __u32 *seed, 904 ext2_dirhash_t *ret_hash, 905 ext2_dirhash_t *ret_minor_hash); 906 907 908/* dir_iterate.c */ 909extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 910 struct ext2_dir_entry *dirent, 911 unsigned int *rec_len); 912extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 913 unsigned int len, 914 struct ext2_dir_entry *dirent); 915extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 916 ext2_ino_t dir, 917 int flags, 918 char *block_buf, 919 int (*func)(struct ext2_dir_entry *dirent, 920 int offset, 921 int blocksize, 922 char *buf, 923 void *priv_data), 924 void *priv_data); 925extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 926 ext2_ino_t dir, 927 int flags, 928 char *block_buf, 929 int (*func)(ext2_ino_t dir, 930 int entry, 931 struct ext2_dir_entry *dirent, 932 int offset, 933 int blocksize, 934 char *buf, 935 void *priv_data), 936 void *priv_data); 937 938/* dupfs.c */ 939extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 940 941/* expanddir.c */ 942extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 943 944/* ext_attr.c */ 945extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 946 void *data); 947extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 948extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 949 void *buf); 950extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 951 void *buf); 952extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 953 void *buf); 954extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 955 char *block_buf, 956 int adjust, __u32 *newcount); 957extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 958 char *block_buf, 959 int adjust, __u32 *newcount); 960 961/* extent.c */ 962extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 963extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 964 ext2_extent_handle_t *handle); 965extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 966 struct ext2_inode *inode, 967 ext2_extent_handle_t *ret_handle); 968extern void ext2fs_extent_free(ext2_extent_handle_t handle); 969extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 970 int flags, struct ext2fs_extent *extent); 971extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 972 struct ext2fs_extent *extent); 973extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 974 struct ext2fs_extent *extent); 975extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 976 blk64_t logical, blk64_t physical, 977 int flags); 978extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 979extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 980 struct ext2_extent_info *info); 981extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 982 blk64_t blk); 983 984/* fileio.c */ 985extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 986 struct ext2_inode *inode, 987 int flags, ext2_file_t *ret); 988extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 989 int flags, ext2_file_t *ret); 990extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 991extern errcode_t ext2fs_file_close(ext2_file_t file); 992extern errcode_t ext2fs_file_flush(ext2_file_t file); 993extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 994 unsigned int wanted, unsigned int *got); 995extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 996 unsigned int nbytes, unsigned int *written); 997extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 998 int whence, __u64 *ret_pos); 999extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1000 int whence, ext2_off_t *ret_pos); 1001errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1002extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1003extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1004 1005/* finddev.c */ 1006extern char *ext2fs_find_block_device(dev_t device); 1007 1008/* flushb.c */ 1009extern errcode_t ext2fs_sync_device(int fd, int flushb); 1010 1011/* freefs.c */ 1012extern void ext2fs_free(ext2_filsys fs); 1013extern void ext2fs_free_dblist(ext2_dblist dblist); 1014extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1015extern void ext2fs_u32_list_free(ext2_u32_list bb); 1016 1017/* gen_bitmap.c */ 1018extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1019extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1020 __u32 start, __u32 end, 1021 __u32 real_end, 1022 const char *descr, char *init_map, 1023 ext2fs_generic_bitmap *ret); 1024extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1025 __u32 end, 1026 __u32 real_end, 1027 const char *descr, 1028 ext2fs_generic_bitmap *ret); 1029extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1030 ext2fs_generic_bitmap *dest); 1031extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1032extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1033 errcode_t magic, 1034 errcode_t neq, 1035 ext2_ino_t end, 1036 ext2_ino_t *oend); 1037extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1038extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1039 __u32 new_end, 1040 __u32 new_real_end, 1041 ext2fs_generic_bitmap bmap); 1042extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1043 ext2fs_generic_bitmap bm1, 1044 ext2fs_generic_bitmap bm2); 1045extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1046 errcode_t magic, 1047 __u32 start, __u32 num, 1048 void *out); 1049extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1050 errcode_t magic, 1051 __u32 start, __u32 num, 1052 void *in); 1053 1054/* gen_bitmap64.c */ 1055void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1056errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1057 int type, __u64 start, __u64 end, 1058 __u64 real_end, 1059 const char *descr, 1060 ext2fs_generic_bitmap *ret); 1061errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1062 ext2fs_generic_bitmap *dest); 1063void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1064errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1065 errcode_t neq, 1066 __u64 end, __u64 *oend); 1067void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1068errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1069 __u64 new_end, 1070 __u64 new_real_end); 1071errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1072 ext2fs_generic_bitmap bm1, 1073 ext2fs_generic_bitmap bm2); 1074errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1075 __u64 start, unsigned int num, 1076 void *out); 1077errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1078 __u64 start, unsigned int num, 1079 void *in); 1080 1081/* getsize.c */ 1082extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1083 blk_t *retblocks); 1084extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1085 blk64_t *retblocks); 1086 1087/* getsectsize.c */ 1088errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1089 1090/* i_block.c */ 1091errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1092 blk64_t num_blocks); 1093errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1094 blk64_t num_blocks); 1095errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1096 1097/* imager.c */ 1098extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1099extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1100extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1101extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1102extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1103extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1104 1105/* ind_block.c */ 1106errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1107errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1108 1109/* initialize.c */ 1110extern errcode_t ext2fs_initialize(const char *name, int flags, 1111 struct ext2_super_block *param, 1112 io_manager manager, ext2_filsys *ret_fs); 1113 1114/* icount.c */ 1115extern void ext2fs_free_icount(ext2_icount_t icount); 1116extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1117 int flags, ext2_icount_t *ret); 1118extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1119 unsigned int size, 1120 ext2_icount_t hint, ext2_icount_t *ret); 1121extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1122 unsigned int size, 1123 ext2_icount_t *ret); 1124extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1125 __u16 *ret); 1126extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1127 __u16 *ret); 1128extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1129 __u16 *ret); 1130extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1131 __u16 count); 1132extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1133errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1134 1135/* inode.c */ 1136extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1137extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1138 ext2_ino_t *ino, 1139 struct ext2_inode *inode, 1140 int bufsize); 1141extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1142 ext2_inode_scan *ret_scan); 1143extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1144extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1145 struct ext2_inode *inode); 1146extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1147 int group); 1148extern void ext2fs_set_inode_callback 1149 (ext2_inode_scan scan, 1150 errcode_t (*done_group)(ext2_filsys fs, 1151 ext2_inode_scan scan, 1152 dgrp_t group, 1153 void * priv_data), 1154 void *done_group_data); 1155extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1156 int clear_flags); 1157extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1158 struct ext2_inode * inode, 1159 int bufsize); 1160extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1161 struct ext2_inode * inode); 1162extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1163 struct ext2_inode * inode, 1164 int bufsize); 1165extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1166 struct ext2_inode * inode); 1167extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1168 struct ext2_inode * inode); 1169extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1170extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1171 1172/* inode_io.c */ 1173extern io_manager inode_io_manager; 1174extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1175 char **name); 1176extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1177 struct ext2_inode *inode, 1178 char **name); 1179 1180/* ismounted.c */ 1181extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1182extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1183 char *mtpt, int mtlen); 1184 1185/* namei.c */ 1186extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1187 int namelen, char *buf, ext2_ino_t *inode); 1188extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1189 const char *name, ext2_ino_t *inode); 1190errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1191 const char *name, ext2_ino_t *inode); 1192extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1193 ext2_ino_t inode, ext2_ino_t *res_inode); 1194 1195/* native.c */ 1196int ext2fs_native_flag(void); 1197 1198/* newdir.c */ 1199extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1200 ext2_ino_t parent_ino, char **block); 1201 1202/* mkdir.c */ 1203extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1204 const char *name); 1205 1206/* mkjournal.c */ 1207extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1208 blk_t *ret_blk, int *ret_count); 1209extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1210 blk64_t *ret_blk, int *ret_count); 1211extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1212 __u32 size, int flags, 1213 char **ret_jsb); 1214extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1215 ext2_filsys journal_dev); 1216extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1217 int flags); 1218extern int ext2fs_default_journal_size(__u64 blocks); 1219 1220/* openfs.c */ 1221extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1222 unsigned int block_size, io_manager manager, 1223 ext2_filsys *ret_fs); 1224extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1225 int flags, int superblock, 1226 unsigned int block_size, io_manager manager, 1227 ext2_filsys *ret_fs); 1228extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1229 blk64_t group_block, dgrp_t i); 1230extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1231 dgrp_t i); 1232errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1233errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1234errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1235 1236/* get_pathname.c */ 1237extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1238 char **name); 1239 1240/* link.c */ 1241errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1242 ext2_ino_t ino, int flags); 1243errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1244 ext2_ino_t ino, int flags); 1245 1246/* read_bb.c */ 1247extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1248 ext2_badblocks_list *bb_list); 1249 1250/* read_bb_file.c */ 1251extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1252 ext2_badblocks_list *bb_list, 1253 void *priv_data, 1254 void (*invalid)(ext2_filsys fs, 1255 blk_t blk, 1256 char *badstr, 1257 void *priv_data)); 1258extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1259 ext2_badblocks_list *bb_list, 1260 void (*invalid)(ext2_filsys fs, 1261 blk_t blk)); 1262 1263/* res_gdt.c */ 1264extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1265 1266/* swapfs.c */ 1267extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1268 int has_header); 1269extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1270 struct ext2_ext_attr_header *from_hdr); 1271extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1272 struct ext2_ext_attr_entry *from_entry); 1273extern void ext2fs_swap_super(struct ext2_super_block * super); 1274extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1275extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1276extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1277 struct ext2_inode_large *f, int hostorder, 1278 int bufsize); 1279extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1280 struct ext2_inode *f, int hostorder); 1281 1282/* valid_blk.c */ 1283extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1284 1285/* version.c */ 1286extern int ext2fs_parse_version_string(const char *ver_string); 1287extern int ext2fs_get_library_version(const char **ver_string, 1288 const char **date_string); 1289 1290/* write_bb_file.c */ 1291extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1292 unsigned int flags, 1293 FILE *f); 1294 1295 1296/* inline functions */ 1297extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1298extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1299extern errcode_t ext2fs_free_mem(void *ptr); 1300extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1301 unsigned long size, void *ptr); 1302extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1303extern void ext2fs_mark_changed(ext2_filsys fs); 1304extern int ext2fs_test_changed(ext2_filsys fs); 1305extern void ext2fs_mark_valid(ext2_filsys fs); 1306extern void ext2fs_unmark_valid(ext2_filsys fs); 1307extern int ext2fs_test_valid(ext2_filsys fs); 1308extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1309extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1310extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1311extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1312extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1313extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1314extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1315extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1316extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1317 struct ext2_inode *inode); 1318extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1319extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1320 1321/* 1322 * The actual inlined functions definitions themselves... 1323 * 1324 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1325 * functions at all! 1326 */ 1327#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1328#ifdef INCLUDE_INLINE_FUNCS 1329#define _INLINE_ extern 1330#else 1331#ifdef __GNUC__ 1332#define _INLINE_ extern __inline__ 1333#else /* For Watcom C */ 1334#define _INLINE_ extern inline 1335#endif 1336#endif 1337 1338#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1339#include <string.h> 1340/* 1341 * Allocate memory 1342 */ 1343_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1344{ 1345 void *pp; 1346 1347 pp = malloc(size); 1348 if (!pp) 1349 return EXT2_ET_NO_MEMORY; 1350 memcpy(ptr, &pp, sizeof (pp)); 1351 return 0; 1352} 1353 1354_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1355{ 1356 if (count && (-1UL)/count<size) 1357 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1358 return ext2fs_get_mem(count*size, ptr); 1359} 1360 1361/* 1362 * Free memory 1363 */ 1364_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1365{ 1366 void *p; 1367 1368 memcpy(&p, ptr, sizeof(p)); 1369 free(p); 1370 p = 0; 1371 memcpy(ptr, &p, sizeof(p)); 1372 return 0; 1373} 1374 1375/* 1376 * Resize memory 1377 */ 1378_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1379 unsigned long size, void *ptr) 1380{ 1381 void *p; 1382 1383 /* Use "memcpy" for pointer assignments here to avoid problems 1384 * with C99 strict type aliasing rules. */ 1385 memcpy(&p, ptr, sizeof(p)); 1386 p = realloc(p, size); 1387 if (!p) 1388 return EXT2_ET_NO_MEMORY; 1389 memcpy(ptr, &p, sizeof(p)); 1390 return 0; 1391} 1392#endif /* Custom memory routines */ 1393 1394/* 1395 * Mark a filesystem superblock as dirty 1396 */ 1397_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1398{ 1399 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1400} 1401 1402/* 1403 * Mark a filesystem as changed 1404 */ 1405_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1406{ 1407 fs->flags |= EXT2_FLAG_CHANGED; 1408} 1409 1410/* 1411 * Check to see if a filesystem has changed 1412 */ 1413_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1414{ 1415 return (fs->flags & EXT2_FLAG_CHANGED); 1416} 1417 1418/* 1419 * Mark a filesystem as valid 1420 */ 1421_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1422{ 1423 fs->flags |= EXT2_FLAG_VALID; 1424} 1425 1426/* 1427 * Mark a filesystem as NOT valid 1428 */ 1429_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1430{ 1431 fs->flags &= ~EXT2_FLAG_VALID; 1432} 1433 1434/* 1435 * Check to see if a filesystem is valid 1436 */ 1437_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1438{ 1439 return (fs->flags & EXT2_FLAG_VALID); 1440} 1441 1442/* 1443 * Mark the inode bitmap as dirty 1444 */ 1445_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1446{ 1447 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1448} 1449 1450/* 1451 * Mark the block bitmap as dirty 1452 */ 1453_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1454{ 1455 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1456} 1457 1458/* 1459 * Check to see if a filesystem's inode bitmap is dirty 1460 */ 1461_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1462{ 1463 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1464} 1465 1466/* 1467 * Check to see if a filesystem's block bitmap is dirty 1468 */ 1469_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1470{ 1471 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1472} 1473 1474/* 1475 * Return the group # of a block 1476 */ 1477_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1478{ 1479 return ext2fs_group_of_blk2(fs, blk); 1480} 1481/* 1482 * Return the group # of an inode number 1483 */ 1484_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1485{ 1486 return (ino - 1) / fs->super->s_inodes_per_group; 1487} 1488 1489/* 1490 * Return the first block (inclusive) in a group 1491 */ 1492_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1493{ 1494 return ext2fs_group_first_block2(fs, group); 1495} 1496 1497/* 1498 * Return the last block (inclusive) in a group 1499 */ 1500_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1501{ 1502 return ext2fs_group_last_block2(fs, group); 1503} 1504 1505_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1506 struct ext2_inode *inode) 1507{ 1508 return ext2fs_inode_data_blocks2(fs, inode); 1509} 1510 1511/* 1512 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1513 */ 1514_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1515{ 1516 if (!a) 1517 return 0; 1518 return ((a - 1) / b) + 1; 1519} 1520 1521_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1522{ 1523 if (!a) 1524 return 0; 1525 return ((a - 1) / b) + 1; 1526} 1527 1528#undef _INLINE_ 1529#endif 1530 1531#ifdef __cplusplus 1532} 1533#endif 1534 1535#endif /* _EXT2FS_EXT2FS_H */ 1536