ext2fs.h revision 1da5ef707904cf99300a0fb36b9ae3b29dbc8bde
1/* 2 * ext2fs.h --- ext2fs 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Library 8 * General Public License, version 2. 9 * %End-Header% 10 */ 11 12#ifndef _EXT2FS_EXT2FS_H 13#define _EXT2FS_EXT2FS_H 14 15#ifdef __GNUC__ 16#define EXT2FS_ATTR(x) __attribute__(x) 17#else 18#define EXT2FS_ATTR(x) 19#endif 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25/* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29#define NO_INLINE_FUNCS 30#endif 31 32/* 33 * Where the master copy of the superblock is located, and how big 34 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 35 * the size of the superblock structure is not necessarily trustworthy 36 * (some versions have the padding set up so that the superblock is 37 * 1032 bytes long). 38 */ 39#define SUPERBLOCK_OFFSET 1024 40#define SUPERBLOCK_SIZE 1024 41 42/* 43 * The last ext2fs revision level that this version of the library is 44 * able to support. 45 */ 46#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 47 48#ifdef HAVE_SYS_TYPES_H 49#include <sys/types.h> 50#endif 51 52#include <stdio.h> 53#include <stdlib.h> 54#include <string.h> 55#include <errno.h> 56 57#if EXT2_FLAT_INCLUDES 58#include "e2_types.h" 59#include "ext2_fs.h" 60#include "ext3_extents.h" 61#else 62#include <ext2fs/ext2_types.h> 63#include <ext2fs/ext2_fs.h> 64#include <ext2fs/ext3_extents.h> 65#endif /* EXT2_FLAT_INCLUDES */ 66 67typedef __u32 ext2_ino_t; 68typedef __u32 blk_t; 69typedef __u64 blk64_t; 70typedef __u32 dgrp_t; 71typedef __u32 ext2_off_t; 72typedef __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_DIRECT_IO 0x80000 177 178/* 179 * Special flag in the ext2 inode i_flag field that means that this is 180 * a new inode. (So that ext2_write_inode() can clear extra fields.) 181 */ 182#define EXT2_NEW_INODE_FL 0x80000000 183 184/* 185 * Flags for mkjournal 186 * 187 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 188 */ 189#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 190 191struct struct_ext2_filsys { 192 errcode_t magic; 193 io_channel io; 194 int flags; 195 char * device_name; 196 struct ext2_super_block * super; 197 unsigned int blocksize; 198 int cluster_ratio_bits; 199 dgrp_t group_desc_count; 200 unsigned long desc_blocks; 201 struct ext2_group_desc * group_desc; 202 int inode_blocks_per_group; 203 ext2fs_inode_bitmap inode_map; 204 ext2fs_block_bitmap block_map; 205 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 206 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 207 errcode_t (*write_bitmaps)(ext2_filsys fs); 208 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 209 struct ext2_inode *inode); 210 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 211 struct ext2_inode *inode); 212 ext2_badblocks_list badblocks; 213 ext2_dblist dblist; 214 __u32 stride; /* for mke2fs */ 215 struct ext2_super_block * orig_super; 216 struct ext2_image_hdr * image_header; 217 __u32 umask; 218 time_t now; 219 /* 220 * Reserved for future expansion 221 */ 222 __u32 reserved[7]; 223 224 /* 225 * Reserved for the use of the calling application. 226 */ 227 void * priv_data; 228 229 /* 230 * Inode cache 231 */ 232 struct ext2_inode_cache *icache; 233 io_channel image_io; 234 235 /* 236 * More callback functions 237 */ 238 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 239 blk64_t *ret); 240 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 241}; 242 243#if EXT2_FLAT_INCLUDES 244#include "e2_bitops.h" 245#else 246#include <ext2fs/bitops.h> 247#endif 248 249/* 250 * Return flags for the block iterator functions 251 */ 252#define BLOCK_CHANGED 1 253#define BLOCK_ABORT 2 254#define BLOCK_ERROR 4 255 256/* 257 * Block interate flags 258 * 259 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 260 * function should be called on blocks where the block number is zero. 261 * This is used by ext2fs_expand_dir() to be able to add a new block 262 * to an inode. It can also be used for programs that want to be able 263 * to deal with files that contain "holes". 264 * 265 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 266 * the indirect, doubly indirect, etc. blocks should be called after 267 * all of the blocks containined in the indirect blocks are processed. 268 * This is useful if you are going to be deallocating blocks from an 269 * inode. 270 * 271 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 272 * called for data blocks only. 273 * 274 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 275 * modify returned block number. 276 * 277 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 278 * ext2fs_block_iterate2 that large files won't be accepted. 279 */ 280#define BLOCK_FLAG_APPEND 1 281#define BLOCK_FLAG_HOLE 1 282#define BLOCK_FLAG_DEPTH_TRAVERSE 2 283#define BLOCK_FLAG_DATA_ONLY 4 284#define BLOCK_FLAG_READ_ONLY 8 285 286#define BLOCK_FLAG_NO_LARGE 0x1000 287 288/* 289 * Magic "block count" return values for the block iterator function. 290 */ 291#define BLOCK_COUNT_IND (-1) 292#define BLOCK_COUNT_DIND (-2) 293#define BLOCK_COUNT_TIND (-3) 294#define BLOCK_COUNT_TRANSLATOR (-4) 295 296#if 0 297/* 298 * Flags for ext2fs_move_blocks 299 */ 300#define EXT2_BMOVE_GET_DBLIST 0x0001 301#define EXT2_BMOVE_DEBUG 0x0002 302#endif 303 304/* 305 * Generic (non-filesystem layout specific) extents structure 306 */ 307 308#define EXT2_EXTENT_FLAGS_LEAF 0x0001 309#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 310#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 311 312struct ext2fs_extent { 313 blk64_t e_pblk; /* first physical block */ 314 blk64_t e_lblk; /* first logical block extent covers */ 315 __u32 e_len; /* number of blocks covered by extent */ 316 __u32 e_flags; /* extent flags */ 317}; 318 319typedef struct ext2_extent_handle *ext2_extent_handle_t; 320typedef struct ext2_extent_path *ext2_extent_path_t; 321 322/* 323 * Flags used by ext2fs_extent_get() 324 */ 325#define EXT2_EXTENT_CURRENT 0x0000 326#define EXT2_EXTENT_MOVE_MASK 0x000F 327#define EXT2_EXTENT_ROOT 0x0001 328#define EXT2_EXTENT_LAST_LEAF 0x0002 329#define EXT2_EXTENT_FIRST_SIB 0x0003 330#define EXT2_EXTENT_LAST_SIB 0x0004 331#define EXT2_EXTENT_NEXT_SIB 0x0005 332#define EXT2_EXTENT_PREV_SIB 0x0006 333#define EXT2_EXTENT_NEXT_LEAF 0x0007 334#define EXT2_EXTENT_PREV_LEAF 0x0008 335#define EXT2_EXTENT_NEXT 0x0009 336#define EXT2_EXTENT_PREV 0x000A 337#define EXT2_EXTENT_UP 0x000B 338#define EXT2_EXTENT_DOWN 0x000C 339#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 340 341/* 342 * Flags used by ext2fs_extent_insert() 343 */ 344#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 345#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 346 347/* 348 * Flags used by ext2fs_extent_delete() 349 */ 350#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 351 352/* 353 * Flags used by ext2fs_extent_set_bmap() 354 */ 355#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 356 357/* 358 * Data structure returned by ext2fs_extent_get_info() 359 */ 360struct ext2_extent_info { 361 int curr_entry; 362 int curr_level; 363 int num_entries; 364 int max_entries; 365 int max_depth; 366 int bytes_avail; 367 blk64_t max_lblk; 368 blk64_t max_pblk; 369 __u32 max_len; 370 __u32 max_uninit_len; 371}; 372 373/* 374 * Flags for directory block reading and writing functions 375 */ 376#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 377 378/* 379 * Return flags for the directory iterator functions 380 */ 381#define DIRENT_CHANGED 1 382#define DIRENT_ABORT 2 383#define DIRENT_ERROR 3 384 385/* 386 * Directory iterator flags 387 */ 388 389#define DIRENT_FLAG_INCLUDE_EMPTY 1 390#define DIRENT_FLAG_INCLUDE_REMOVED 2 391 392#define DIRENT_DOT_FILE 1 393#define DIRENT_DOT_DOT_FILE 2 394#define DIRENT_OTHER_FILE 3 395#define DIRENT_DELETED_FILE 4 396 397/* 398 * Inode scan definitions 399 */ 400typedef struct ext2_struct_inode_scan *ext2_inode_scan; 401 402/* 403 * ext2fs_scan flags 404 */ 405#define EXT2_SF_CHK_BADBLOCKS 0x0001 406#define EXT2_SF_BAD_INODE_BLK 0x0002 407#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 408#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 409#define EXT2_SF_DO_LAZY 0x0010 410 411/* 412 * ext2fs_check_if_mounted flags 413 */ 414#define EXT2_MF_MOUNTED 1 415#define EXT2_MF_ISROOT 2 416#define EXT2_MF_READONLY 4 417#define EXT2_MF_SWAP 8 418#define EXT2_MF_BUSY 16 419 420/* 421 * Ext2/linux mode flags. We define them here so that we don't need 422 * to depend on the OS's sys/stat.h, since we may be compiling on a 423 * non-Linux system. 424 */ 425#define LINUX_S_IFMT 00170000 426#define LINUX_S_IFSOCK 0140000 427#define LINUX_S_IFLNK 0120000 428#define LINUX_S_IFREG 0100000 429#define LINUX_S_IFBLK 0060000 430#define LINUX_S_IFDIR 0040000 431#define LINUX_S_IFCHR 0020000 432#define LINUX_S_IFIFO 0010000 433#define LINUX_S_ISUID 0004000 434#define LINUX_S_ISGID 0002000 435#define LINUX_S_ISVTX 0001000 436 437#define LINUX_S_IRWXU 00700 438#define LINUX_S_IRUSR 00400 439#define LINUX_S_IWUSR 00200 440#define LINUX_S_IXUSR 00100 441 442#define LINUX_S_IRWXG 00070 443#define LINUX_S_IRGRP 00040 444#define LINUX_S_IWGRP 00020 445#define LINUX_S_IXGRP 00010 446 447#define LINUX_S_IRWXO 00007 448#define LINUX_S_IROTH 00004 449#define LINUX_S_IWOTH 00002 450#define LINUX_S_IXOTH 00001 451 452#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 453#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 454#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 455#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 456#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 457#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 458#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 459 460/* 461 * ext2 size of an inode 462 */ 463#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 464 465/* 466 * ext2_icount_t abstraction 467 */ 468#define EXT2_ICOUNT_OPT_INCREMENT 0x01 469 470typedef struct ext2_icount *ext2_icount_t; 471 472/* 473 * Flags for ext2fs_bmap 474 */ 475#define BMAP_ALLOC 0x0001 476#define BMAP_SET 0x0002 477 478/* 479 * Returned flags from ext2fs_bmap 480 */ 481#define BMAP_RET_UNINIT 0x0001 482 483/* 484 * Flags for imager.c functions 485 */ 486#define IMAGER_FLAG_INODEMAP 1 487#define IMAGER_FLAG_SPARSEWRITE 2 488 489/* 490 * For checking structure magic numbers... 491 */ 492 493#define EXT2_CHECK_MAGIC(struct, code) \ 494 if ((struct)->magic != (code)) return (code) 495 496 497/* 498 * For ext2 compression support 499 */ 500#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 501#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 502 503/* 504 * Features supported by this version of the library 505 */ 506#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 507 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 508 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 509 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 510 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 511 EXT2_FEATURE_COMPAT_EXT_ATTR) 512 513/* This #ifdef is temporary until compression is fully supported */ 514#ifdef ENABLE_COMPRESSION 515#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 516/* If the below warning bugs you, then have 517 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 518 environment at configure time. */ 519 #warning "Compression support is experimental" 520#endif 521#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 522 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 523 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 524 EXT2_FEATURE_INCOMPAT_META_BG|\ 525 EXT3_FEATURE_INCOMPAT_RECOVER|\ 526 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 527 EXT4_FEATURE_INCOMPAT_FLEX_BG) 528#else 529#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 530 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 531 EXT2_FEATURE_INCOMPAT_META_BG|\ 532 EXT3_FEATURE_INCOMPAT_RECOVER|\ 533 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 534 EXT4_FEATURE_INCOMPAT_FLEX_BG) 535#endif 536#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 537 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 538 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 539 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 540 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 541 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 542 543/* 544 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 545 * to ext2fs_openfs() 546 */ 547#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 548#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 549 550 551/* Translate a block number to a cluster number */ 552#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 553#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 554#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 555/* Translate a cluster number to a block number */ 556#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 557/* Translate # of blks to # of clusters */ 558#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 559 (fs)->cluster_ratio_bits) 560 561/* 562 * function prototypes 563 */ 564 565/* alloc.c */ 566extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 567 ext2fs_inode_bitmap map, ext2_ino_t *ret); 568extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 569 ext2fs_block_bitmap map, blk_t *ret); 570extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 571 blk_t finish, int num, 572 ext2fs_block_bitmap map, 573 blk_t *ret); 574extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 575 char *block_buf, blk_t *ret); 576extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 577 errcode_t (*func)(ext2_filsys fs, 578 blk64_t goal, 579 blk64_t *ret), 580 errcode_t (**old)(ext2_filsys fs, 581 blk64_t goal, 582 blk64_t *ret)); 583 584/* alloc_sb.c */ 585extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 586 dgrp_t group, 587 ext2fs_block_bitmap bmap); 588extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 589 void (*func)(ext2_filsys fs, 590 blk64_t blk, 591 int inuse), 592 void (**old)(ext2_filsys fs, 593 blk64_t blk, 594 int inuse)); 595 596/* alloc_stats.c */ 597void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 598void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 599 int inuse, int isdir); 600void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 601 602/* alloc_tables.c */ 603extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 604extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 605 ext2fs_block_bitmap bmap); 606 607/* badblocks.c */ 608extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 609extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 610extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 611extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 612extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 613 ext2_u32_iterate *ret); 614extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 615extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 616extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 617extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 618 619extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 620 int size); 621extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 622 blk_t blk); 623extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 624 blk_t blk); 625extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 626extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 627extern errcode_t 628 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 629 ext2_badblocks_iterate *ret); 630extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 631 blk_t *blk); 632extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 633extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 634 ext2_badblocks_list *dest); 635extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 636 ext2_badblocks_list bb2); 637extern int ext2fs_u32_list_count(ext2_u32_list bb); 638 639/* bb_compat */ 640extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 641extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 642extern int badblocks_list_test(badblocks_list bb, blk_t blk); 643extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 644 badblocks_iterate *ret); 645extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 646extern void badblocks_list_iterate_end(badblocks_iterate iter); 647extern void badblocks_list_free(badblocks_list bb); 648 649/* bb_inode.c */ 650extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 651 ext2_badblocks_list bb_list); 652 653/* bitmaps.c */ 654extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 655extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 656extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 657 ext2fs_generic_bitmap *dest); 658extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 659extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 660extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 661extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 662extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 663 const char *descr, 664 ext2fs_block_bitmap *ret); 665extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 666 const char *descr, 667 ext2fs_inode_bitmap *ret); 668extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 669 ext2_ino_t end, ext2_ino_t *oend); 670extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 671 blk_t end, blk_t *oend); 672extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 673extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 674extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 675extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 676extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 677 ext2fs_inode_bitmap bmap); 678extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 679 ext2fs_block_bitmap bmap); 680extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 681 ext2fs_block_bitmap bm2); 682extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 683 ext2fs_inode_bitmap bm2); 684extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 685 ext2_ino_t start, unsigned int num, 686 void *in); 687extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 688 ext2_ino_t start, unsigned int num, 689 void *out); 690extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 691 blk_t start, unsigned int num, 692 void *in); 693extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 694 blk_t start, unsigned int num, 695 void *out); 696 697 698/* block.c */ 699extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 700 ext2_ino_t ino, 701 int flags, 702 char *block_buf, 703 int (*func)(ext2_filsys fs, 704 blk_t *blocknr, 705 int blockcnt, 706 void *priv_data), 707 void *priv_data); 708errcode_t ext2fs_block_iterate2(ext2_filsys fs, 709 ext2_ino_t ino, 710 int flags, 711 char *block_buf, 712 int (*func)(ext2_filsys fs, 713 blk_t *blocknr, 714 e2_blkcnt_t blockcnt, 715 blk_t ref_blk, 716 int ref_offset, 717 void *priv_data), 718 void *priv_data); 719 720/* bmap.c */ 721extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 722 struct ext2_inode *inode, 723 char *block_buf, int bmap_flags, 724 blk_t block, blk_t *phys_blk); 725extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 726 struct ext2_inode *inode, 727 char *block_buf, int bmap_flags, blk64_t block, 728 int *ret_flags, blk64_t *phys_blk); 729 730#if 0 731/* bmove.c */ 732extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 733 ext2fs_block_bitmap reserve, 734 ext2fs_block_bitmap alloc_map, 735 int flags); 736#endif 737 738/* check_desc.c */ 739extern errcode_t ext2fs_check_desc(ext2_filsys fs); 740 741/* closefs.c */ 742extern errcode_t ext2fs_close(ext2_filsys fs); 743extern errcode_t ext2fs_flush(ext2_filsys fs); 744extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 745extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 746 dgrp_t group, 747 blk_t *ret_super_blk, 748 blk_t *ret_old_desc_blk, 749 blk_t *ret_new_desc_blk, 750 int *ret_meta_bg); 751extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 752 753/* csum.c */ 754extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 755extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 756extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 757 758/* dblist.c */ 759 760extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 761extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 762extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 763 blk_t blk, int blockcnt); 764extern void ext2fs_dblist_sort(ext2_dblist dblist, 765 EXT2_QSORT_TYPE (*sortfunc)(const void *, 766 const void *)); 767extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 768 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 769 void *priv_data), 770 void *priv_data); 771extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 772 blk_t blk, int blockcnt); 773extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 774 ext2_dblist *dest); 775extern int ext2fs_dblist_count(ext2_dblist dblist); 776extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 777 struct ext2_db_entry **entry); 778extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 779 780/* dblist_dir.c */ 781extern errcode_t 782 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 783 int flags, 784 char *block_buf, 785 int (*func)(ext2_ino_t dir, 786 int entry, 787 struct ext2_dir_entry *dirent, 788 int offset, 789 int blocksize, 790 char *buf, 791 void *priv_data), 792 void *priv_data); 793 794/* dirblock.c */ 795extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 796 void *buf); 797extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 798 void *buf, int flags); 799extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 800 void *buf); 801extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 802 void *buf, int flags); 803 804/* dirhash.c */ 805extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 806 const __u32 *seed, 807 ext2_dirhash_t *ret_hash, 808 ext2_dirhash_t *ret_minor_hash); 809 810 811/* dir_iterate.c */ 812extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 813 struct ext2_dir_entry *dirent, 814 unsigned int *rec_len); 815extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 816 unsigned int len, 817 struct ext2_dir_entry *dirent); 818extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 819 ext2_ino_t dir, 820 int flags, 821 char *block_buf, 822 int (*func)(struct ext2_dir_entry *dirent, 823 int offset, 824 int blocksize, 825 char *buf, 826 void *priv_data), 827 void *priv_data); 828extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 829 ext2_ino_t dir, 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/* dupfs.c */ 842extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 843 844/* expanddir.c */ 845extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 846 847/* ext_attr.c */ 848extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 849 void *data); 850extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 851extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 852 void *buf); 853extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 854 char *block_buf, 855 int adjust, __u32 *newcount); 856 857/* extent.c */ 858extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 859extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 860 ext2_extent_handle_t *handle); 861extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 862 struct ext2_inode *inode, 863 ext2_extent_handle_t *ret_handle); 864extern void ext2fs_extent_free(ext2_extent_handle_t handle); 865extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 866 int flags, struct ext2fs_extent *extent); 867extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 868 struct ext2fs_extent *extent); 869extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 870 struct ext2fs_extent *extent); 871extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 872 blk64_t logical, blk64_t physical, 873 int flags); 874extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 875extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 876 struct ext2_extent_info *info); 877extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 878 blk64_t blk); 879 880/* fileio.c */ 881extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 882 struct ext2_inode *inode, 883 int flags, ext2_file_t *ret); 884extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 885 int flags, ext2_file_t *ret); 886extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 887extern errcode_t ext2fs_file_close(ext2_file_t file); 888extern errcode_t ext2fs_file_flush(ext2_file_t file); 889extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 890 unsigned int wanted, unsigned int *got); 891extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 892 unsigned int nbytes, unsigned int *written); 893extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 894 int whence, __u64 *ret_pos); 895extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 896 int whence, ext2_off_t *ret_pos); 897errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 898extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 899extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 900 901/* finddev.c */ 902extern char *ext2fs_find_block_device(dev_t device); 903 904/* flushb.c */ 905extern errcode_t ext2fs_sync_device(int fd, int flushb); 906 907/* freefs.c */ 908extern void ext2fs_free(ext2_filsys fs); 909extern void ext2fs_free_dblist(ext2_dblist dblist); 910extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 911extern void ext2fs_u32_list_free(ext2_u32_list bb); 912 913/* gen_bitmap.c */ 914extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 915extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 916 __u32 start, __u32 end, 917 __u32 real_end, 918 const char *descr, char *init_map, 919 ext2fs_generic_bitmap *ret); 920extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 921 __u32 end, 922 __u32 real_end, 923 const char *descr, 924 ext2fs_generic_bitmap *ret); 925extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 926 ext2fs_generic_bitmap *dest); 927extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 928extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 929 errcode_t magic, 930 errcode_t neq, 931 ext2_ino_t end, 932 ext2_ino_t *oend); 933extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 934extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 935 __u32 new_end, 936 __u32 new_real_end, 937 ext2fs_generic_bitmap bmap); 938extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 939 ext2fs_generic_bitmap bm1, 940 ext2fs_generic_bitmap bm2); 941extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 942 errcode_t magic, 943 __u32 start, __u32 num, 944 void *out); 945extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 946 errcode_t magic, 947 __u32 start, __u32 num, 948 void *in); 949 950/* getsize.c */ 951extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 952 blk_t *retblocks); 953extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 954 blk64_t *retblocks); 955 956/* getsectsize.c */ 957errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 958errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 959 960/* i_block.c */ 961errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 962 blk64_t num_blocks); 963errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 964 blk64_t num_blocks); 965errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 966 967/* imager.c */ 968extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 969extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 970extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 971extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 972extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 973extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 974 975/* ind_block.c */ 976errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 977errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 978 979/* initialize.c */ 980extern errcode_t ext2fs_initialize(const char *name, int flags, 981 struct ext2_super_block *param, 982 io_manager manager, ext2_filsys *ret_fs); 983 984/* icount.c */ 985extern void ext2fs_free_icount(ext2_icount_t icount); 986extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 987 int flags, ext2_icount_t *ret); 988extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 989 unsigned int size, 990 ext2_icount_t hint, ext2_icount_t *ret); 991extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 992 unsigned int size, 993 ext2_icount_t *ret); 994extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 995 __u16 *ret); 996extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 997 __u16 *ret); 998extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 999 __u16 *ret); 1000extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1001 __u16 count); 1002extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1003errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1004 1005/* inode.c */ 1006extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1007extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1008 ext2_ino_t *ino, 1009 struct ext2_inode *inode, 1010 int bufsize); 1011extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1012 ext2_inode_scan *ret_scan); 1013extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1014extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1015 struct ext2_inode *inode); 1016extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1017 int group); 1018extern void ext2fs_set_inode_callback 1019 (ext2_inode_scan scan, 1020 errcode_t (*done_group)(ext2_filsys fs, 1021 ext2_inode_scan scan, 1022 dgrp_t group, 1023 void * priv_data), 1024 void *done_group_data); 1025extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1026 int clear_flags); 1027extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1028 struct ext2_inode * inode, 1029 int bufsize); 1030extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1031 struct ext2_inode * inode); 1032extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1033 struct ext2_inode * inode, 1034 int bufsize); 1035extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1036 struct ext2_inode * inode); 1037extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1038 struct ext2_inode * inode); 1039extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1040extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1041 1042/* inode_io.c */ 1043extern io_manager inode_io_manager; 1044extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1045 char **name); 1046extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1047 struct ext2_inode *inode, 1048 char **name); 1049 1050/* ismounted.c */ 1051extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1052extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1053 char *mtpt, int mtlen); 1054 1055/* namei.c */ 1056extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1057 int namelen, char *buf, ext2_ino_t *inode); 1058extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1059 const char *name, ext2_ino_t *inode); 1060errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1061 const char *name, ext2_ino_t *inode); 1062extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1063 ext2_ino_t inode, ext2_ino_t *res_inode); 1064 1065/* native.c */ 1066int ext2fs_native_flag(void); 1067 1068/* newdir.c */ 1069extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1070 ext2_ino_t parent_ino, char **block); 1071 1072/* mkdir.c */ 1073extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1074 const char *name); 1075 1076/* mkjournal.c */ 1077extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1078 blk_t *ret_blk, int *ret_count); 1079extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1080 __u32 size, int flags, 1081 char **ret_jsb); 1082extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1083 ext2_filsys journal_dev); 1084extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1085 int flags); 1086extern int ext2fs_default_journal_size(__u64 blocks); 1087 1088/* openfs.c */ 1089extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1090 unsigned int block_size, io_manager manager, 1091 ext2_filsys *ret_fs); 1092extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1093 int flags, int superblock, 1094 unsigned int block_size, io_manager manager, 1095 ext2_filsys *ret_fs); 1096extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1097 dgrp_t i); 1098errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1099errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1100errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1101 1102/* get_pathname.c */ 1103extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1104 char **name); 1105 1106/* link.c */ 1107errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1108 ext2_ino_t ino, int flags); 1109errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1110 ext2_ino_t ino, int flags); 1111 1112/* read_bb.c */ 1113extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1114 ext2_badblocks_list *bb_list); 1115 1116/* read_bb_file.c */ 1117extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1118 ext2_badblocks_list *bb_list, 1119 void *priv_data, 1120 void (*invalid)(ext2_filsys fs, 1121 blk_t blk, 1122 char *badstr, 1123 void *priv_data)); 1124extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1125 ext2_badblocks_list *bb_list, 1126 void (*invalid)(ext2_filsys fs, 1127 blk_t blk)); 1128 1129/* res_gdt.c */ 1130extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1131 1132/* swapfs.c */ 1133extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1134 int has_header); 1135extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1136 struct ext2_ext_attr_header *from_hdr); 1137extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1138 struct ext2_ext_attr_entry *from_entry); 1139extern void ext2fs_swap_super(struct ext2_super_block * super); 1140extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1141extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1142 struct ext2_inode_large *f, int hostorder, 1143 int bufsize); 1144extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1145 struct ext2_inode *f, int hostorder); 1146 1147/* valid_blk.c */ 1148extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1149 1150/* version.c */ 1151extern int ext2fs_parse_version_string(const char *ver_string); 1152extern int ext2fs_get_library_version(const char **ver_string, 1153 const char **date_string); 1154 1155/* write_bb_file.c */ 1156extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1157 unsigned int flags, 1158 FILE *f); 1159 1160 1161/* inline functions */ 1162extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1163extern errcode_t ext2fs_get_memalign(unsigned long size, 1164 unsigned long align, void *ptr); 1165extern errcode_t ext2fs_free_mem(void *ptr); 1166extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1167 unsigned long size, void *ptr); 1168extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1169extern void ext2fs_mark_changed(ext2_filsys fs); 1170extern int ext2fs_test_changed(ext2_filsys fs); 1171extern void ext2fs_mark_valid(ext2_filsys fs); 1172extern void ext2fs_unmark_valid(ext2_filsys fs); 1173extern int ext2fs_test_valid(ext2_filsys fs); 1174extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1175extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1176extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1177extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1178extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1179extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1180extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1181extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1182extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1183 struct ext2_inode *inode); 1184extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1185 1186/* 1187 * The actual inlined functions definitions themselves... 1188 * 1189 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1190 * functions at all! 1191 */ 1192#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1193#ifdef INCLUDE_INLINE_FUNCS 1194#define _INLINE_ extern 1195#else 1196#ifdef __GNUC__ 1197#define _INLINE_ extern __inline__ 1198#else /* For Watcom C */ 1199#define _INLINE_ extern inline 1200#endif 1201#endif 1202 1203#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1204#include <string.h> 1205/* 1206 * Allocate memory 1207 */ 1208_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1209{ 1210 void *pp; 1211 1212 pp = malloc(size); 1213 if (!pp) 1214 return EXT2_ET_NO_MEMORY; 1215 memcpy(ptr, &pp, sizeof (pp)); 1216 return 0; 1217} 1218 1219_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1220 unsigned long align, void *ptr) 1221{ 1222 errcode_t retval; 1223 1224 if (align == 0) 1225 align = 8; 1226 if (retval = posix_memalign((void **) ptr, align, size)) { 1227 if (retval == ENOMEM) 1228 return EXT2_ET_NO_MEMORY; 1229 return retval; 1230 } 1231 return 0; 1232} 1233 1234_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1235{ 1236 if (count && (-1UL)/count<size) 1237 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1238 return ext2fs_get_mem(count*size, ptr); 1239} 1240 1241/* 1242 * Free memory 1243 */ 1244_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1245{ 1246 void *p; 1247 1248 memcpy(&p, ptr, sizeof(p)); 1249 free(p); 1250 p = 0; 1251 memcpy(ptr, &p, sizeof(p)); 1252 return 0; 1253} 1254 1255/* 1256 * Resize memory 1257 */ 1258_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1259 unsigned long size, void *ptr) 1260{ 1261 void *p; 1262 1263 /* Use "memcpy" for pointer assignments here to avoid problems 1264 * with C99 strict type aliasing rules. */ 1265 memcpy(&p, ptr, sizeof(p)); 1266 p = realloc(p, size); 1267 if (!p) 1268 return EXT2_ET_NO_MEMORY; 1269 memcpy(ptr, &p, sizeof(p)); 1270 return 0; 1271} 1272#endif /* Custom memory routines */ 1273 1274/* 1275 * Mark a filesystem superblock as dirty 1276 */ 1277_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1278{ 1279 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1280} 1281 1282/* 1283 * Mark a filesystem as changed 1284 */ 1285_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1286{ 1287 fs->flags |= EXT2_FLAG_CHANGED; 1288} 1289 1290/* 1291 * Check to see if a filesystem has changed 1292 */ 1293_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1294{ 1295 return (fs->flags & EXT2_FLAG_CHANGED); 1296} 1297 1298/* 1299 * Mark a filesystem as valid 1300 */ 1301_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1302{ 1303 fs->flags |= EXT2_FLAG_VALID; 1304} 1305 1306/* 1307 * Mark a filesystem as NOT valid 1308 */ 1309_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1310{ 1311 fs->flags &= ~EXT2_FLAG_VALID; 1312} 1313 1314/* 1315 * Check to see if a filesystem is valid 1316 */ 1317_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1318{ 1319 return (fs->flags & EXT2_FLAG_VALID); 1320} 1321 1322/* 1323 * Mark the inode bitmap as dirty 1324 */ 1325_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1326{ 1327 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1328} 1329 1330/* 1331 * Mark the block bitmap as dirty 1332 */ 1333_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1334{ 1335 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1336} 1337 1338/* 1339 * Check to see if a filesystem's inode bitmap is dirty 1340 */ 1341_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1342{ 1343 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1344} 1345 1346/* 1347 * Check to see if a filesystem's block bitmap is dirty 1348 */ 1349_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1350{ 1351 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1352} 1353 1354/* 1355 * Return the group # of a block 1356 */ 1357_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1358{ 1359 return (blk - fs->super->s_first_data_block) / 1360 fs->super->s_blocks_per_group; 1361} 1362 1363/* 1364 * Return the group # of an inode number 1365 */ 1366_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1367{ 1368 return (ino - 1) / fs->super->s_inodes_per_group; 1369} 1370 1371/* 1372 * Return the first block (inclusive) in a group 1373 */ 1374_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1375{ 1376 return fs->super->s_first_data_block + 1377 (group * fs->super->s_blocks_per_group); 1378} 1379 1380/* 1381 * Return the last block (inclusive) in a group 1382 */ 1383_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1384{ 1385 return (group == fs->group_desc_count - 1 ? 1386 fs->super->s_blocks_count - 1 : 1387 ext2fs_group_first_block(fs, group) + 1388 (fs->super->s_blocks_per_group - 1)); 1389} 1390 1391_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1392 struct ext2_inode *inode) 1393{ 1394 return inode->i_blocks - 1395 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1396} 1397 1398/* 1399 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1400 */ 1401_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1402{ 1403 if (!a) 1404 return 0; 1405 return ((a - 1) / b) + 1; 1406} 1407#undef _INLINE_ 1408#endif 1409 1410#ifdef __cplusplus 1411} 1412#endif 1413 1414#endif /* _EXT2FS_EXT2FS_H */ 1415