ext2fs.h revision a040a99b6cc4bf9f10d39747ca6947f0462a2eb2
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 __s64 e2_blkcnt_t; 72typedef __u32 ext2_dirhash_t; 73 74#if EXT2_FLAT_INCLUDES 75#include "com_err.h" 76#include "ext2_io.h" 77#include "ext2_err.h" 78#include "ext2_ext_attr.h" 79#else 80#include <et/com_err.h> 81#include <ext2fs/ext2_io.h> 82#include <ext2fs/ext2_err.h> 83#include <ext2fs/ext2_ext_attr.h> 84#endif 85 86/* 87 * Portability help for Microsoft Visual C++ 88 */ 89#ifdef _MSC_VER 90#define EXT2_QSORT_TYPE int __cdecl 91#else 92#define EXT2_QSORT_TYPE int 93#endif 94 95typedef struct struct_ext2_filsys *ext2_filsys; 96 97#define EXT2FS_MARK_ERROR 0 98#define EXT2FS_UNMARK_ERROR 1 99#define EXT2FS_TEST_ERROR 2 100 101typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 102typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 103typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 104 105#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 106 107 108/* 109 * Badblocks list definitions 110 */ 111 112typedef struct ext2_struct_u32_list *ext2_badblocks_list; 113typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 114 115typedef struct ext2_struct_u32_list *ext2_u32_list; 116typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 117 118/* old */ 119typedef struct ext2_struct_u32_list *badblocks_list; 120typedef struct ext2_struct_u32_iterate *badblocks_iterate; 121 122#define BADBLOCKS_FLAG_DIRTY 1 123 124/* 125 * ext2_dblist structure and abstractions (see dblist.c) 126 */ 127struct ext2_db_entry { 128 ext2_ino_t ino; 129 blk_t blk; 130 int blockcnt; 131}; 132 133typedef struct ext2_struct_dblist *ext2_dblist; 134 135#define DBLIST_ABORT 1 136 137/* 138 * ext2_fileio definitions 139 */ 140 141#define EXT2_FILE_WRITE 0x0001 142#define EXT2_FILE_CREATE 0x0002 143 144#define EXT2_FILE_MASK 0x00FF 145 146#define EXT2_FILE_BUF_DIRTY 0x4000 147#define EXT2_FILE_BUF_VALID 0x2000 148 149typedef struct ext2_file *ext2_file_t; 150 151#define EXT2_SEEK_SET 0 152#define EXT2_SEEK_CUR 1 153#define EXT2_SEEK_END 2 154 155/* 156 * Flags for the ext2_filsys structure and for ext2fs_open() 157 */ 158#define EXT2_FLAG_RW 0x01 159#define EXT2_FLAG_CHANGED 0x02 160#define EXT2_FLAG_DIRTY 0x04 161#define EXT2_FLAG_VALID 0x08 162#define EXT2_FLAG_IB_DIRTY 0x10 163#define EXT2_FLAG_BB_DIRTY 0x20 164#define EXT2_FLAG_SWAP_BYTES 0x40 165#define EXT2_FLAG_SWAP_BYTES_READ 0x80 166#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 167#define EXT2_FLAG_MASTER_SB_ONLY 0x200 168#define EXT2_FLAG_FORCE 0x400 169#define EXT2_FLAG_SUPER_ONLY 0x800 170#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 171#define EXT2_FLAG_IMAGE_FILE 0x2000 172#define EXT2_FLAG_EXCLUSIVE 0x4000 173#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 174#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 175 176/* 177 * Special flag in the ext2 inode i_flag field that means that this is 178 * a new inode. (So that ext2_write_inode() can clear extra fields.) 179 */ 180#define EXT2_NEW_INODE_FL 0x80000000 181 182/* 183 * Flags for mkjournal 184 * 185 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 186 */ 187#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 188 189struct struct_ext2_filsys { 190 errcode_t magic; 191 io_channel io; 192 int flags; 193 char * device_name; 194 struct ext2_super_block * super; 195 unsigned int blocksize; 196 int fragsize; 197 dgrp_t group_desc_count; 198 unsigned long desc_blocks; 199 struct ext2_group_desc * group_desc; 200 int inode_blocks_per_group; 201 ext2fs_inode_bitmap inode_map; 202 ext2fs_block_bitmap block_map; 203 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 204 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 205 errcode_t (*write_bitmaps)(ext2_filsys fs); 206 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 207 struct ext2_inode *inode); 208 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 209 struct ext2_inode *inode); 210 ext2_badblocks_list badblocks; 211 ext2_dblist dblist; 212 __u32 stride; /* for mke2fs */ 213 struct ext2_super_block * orig_super; 214 struct ext2_image_hdr * image_header; 215 __u32 umask; 216 time_t now; 217 /* 218 * Reserved for future expansion 219 */ 220 __u32 reserved[7]; 221 222 /* 223 * Reserved for the use of the calling application. 224 */ 225 void * priv_data; 226 227 /* 228 * Inode cache 229 */ 230 struct ext2_inode_cache *icache; 231 io_channel image_io; 232}; 233 234#if EXT2_FLAT_INCLUDES 235#include "e2_bitops.h" 236#else 237#include <ext2fs/bitops.h> 238#endif 239 240/* 241 * Return flags for the block iterator functions 242 */ 243#define BLOCK_CHANGED 1 244#define BLOCK_ABORT 2 245#define BLOCK_ERROR 4 246 247/* 248 * Block interate flags 249 * 250 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 251 * function should be called on blocks where the block number is zero. 252 * This is used by ext2fs_expand_dir() to be able to add a new block 253 * to an inode. It can also be used for programs that want to be able 254 * to deal with files that contain "holes". 255 * 256 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 257 * the indirect, doubly indirect, etc. blocks should be called after 258 * all of the blocks containined in the indirect blocks are processed. 259 * This is useful if you are going to be deallocating blocks from an 260 * inode. 261 * 262 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 263 * called for data blocks only. 264 * 265 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 266 * modify returned block number. 267 * 268 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 269 * ext2fs_block_iterate2 that large files won't be accepted. 270 */ 271#define BLOCK_FLAG_APPEND 1 272#define BLOCK_FLAG_HOLE 1 273#define BLOCK_FLAG_DEPTH_TRAVERSE 2 274#define BLOCK_FLAG_DATA_ONLY 4 275#define BLOCK_FLAG_READ_ONLY 8 276 277#define BLOCK_FLAG_NO_LARGE 0x1000 278 279/* 280 * Magic "block count" return values for the block iterator function. 281 */ 282#define BLOCK_COUNT_IND (-1) 283#define BLOCK_COUNT_DIND (-2) 284#define BLOCK_COUNT_TIND (-3) 285#define BLOCK_COUNT_TRANSLATOR (-4) 286 287#if 0 288/* 289 * Flags for ext2fs_move_blocks 290 */ 291#define EXT2_BMOVE_GET_DBLIST 0x0001 292#define EXT2_BMOVE_DEBUG 0x0002 293#endif 294 295/* 296 * Generic (non-filesystem layout specific) extents structure 297 */ 298 299#define EXT2_EXTENT_FLAGS_LEAF 0x0001 300#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 301#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 302 303struct ext2fs_extent { 304 blk64_t e_pblk; /* first physical block */ 305 blk64_t e_lblk; /* first logical block extent covers */ 306 __u32 e_len; /* number of blocks covered by extent */ 307 __u32 e_flags; /* extent flags */ 308}; 309 310typedef struct ext2_extent_handle *ext2_extent_handle_t; 311typedef struct ext2_extent_path *ext2_extent_path_t; 312 313/* 314 * Flags used by ext2fs_extent_get() 315 */ 316#define EXT2_EXTENT_CURRENT 0x0000 317#define EXT2_EXTENT_MOVE_MASK 0x000F 318#define EXT2_EXTENT_ROOT 0x0001 319#define EXT2_EXTENT_LAST_LEAF 0x0002 320#define EXT2_EXTENT_FIRST_SIB 0x0003 321#define EXT2_EXTENT_LAST_SIB 0x0004 322#define EXT2_EXTENT_NEXT_SIB 0x0005 323#define EXT2_EXTENT_PREV_SIB 0x0006 324#define EXT2_EXTENT_NEXT_LEAF 0x0007 325#define EXT2_EXTENT_PREV_LEAF 0x0008 326#define EXT2_EXTENT_NEXT 0x0009 327#define EXT2_EXTENT_PREV 0x000A 328#define EXT2_EXTENT_UP 0x000B 329#define EXT2_EXTENT_DOWN 0x000C 330#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 331 332/* 333 * Flags used by ext2fs_extent_insert() 334 */ 335 336#define EXT2_EXTENT_INSERT_AFTER 0x0001 337 338/* 339 * Data structure returned by ext2fs_extent_get_info() 340 */ 341struct ext2_extent_info { 342 int curr_entry; 343 int curr_level; 344 int num_entries; 345 int max_entries; 346 int max_depth; 347 int bytes_avail; 348 blk64_t max_lblk; 349 blk64_t max_pblk; 350 __u32 max_len; 351 __u32 max_uninit_len; 352}; 353 354/* 355 * Flags for directory block reading and writing functions 356 */ 357#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 358 359/* 360 * Return flags for the directory iterator functions 361 */ 362#define DIRENT_CHANGED 1 363#define DIRENT_ABORT 2 364#define DIRENT_ERROR 3 365 366/* 367 * Directory iterator flags 368 */ 369 370#define DIRENT_FLAG_INCLUDE_EMPTY 1 371#define DIRENT_FLAG_INCLUDE_REMOVED 2 372 373#define DIRENT_DOT_FILE 1 374#define DIRENT_DOT_DOT_FILE 2 375#define DIRENT_OTHER_FILE 3 376#define DIRENT_DELETED_FILE 4 377 378/* 379 * Inode scan definitions 380 */ 381typedef struct ext2_struct_inode_scan *ext2_inode_scan; 382 383/* 384 * ext2fs_scan flags 385 */ 386#define EXT2_SF_CHK_BADBLOCKS 0x0001 387#define EXT2_SF_BAD_INODE_BLK 0x0002 388#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 389#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 390#define EXT2_SF_DO_LAZY 0x0010 391 392/* 393 * ext2fs_check_if_mounted flags 394 */ 395#define EXT2_MF_MOUNTED 1 396#define EXT2_MF_ISROOT 2 397#define EXT2_MF_READONLY 4 398#define EXT2_MF_SWAP 8 399#define EXT2_MF_BUSY 16 400 401/* 402 * Ext2/linux mode flags. We define them here so that we don't need 403 * to depend on the OS's sys/stat.h, since we may be compiling on a 404 * non-Linux system. 405 */ 406#define LINUX_S_IFMT 00170000 407#define LINUX_S_IFSOCK 0140000 408#define LINUX_S_IFLNK 0120000 409#define LINUX_S_IFREG 0100000 410#define LINUX_S_IFBLK 0060000 411#define LINUX_S_IFDIR 0040000 412#define LINUX_S_IFCHR 0020000 413#define LINUX_S_IFIFO 0010000 414#define LINUX_S_ISUID 0004000 415#define LINUX_S_ISGID 0002000 416#define LINUX_S_ISVTX 0001000 417 418#define LINUX_S_IRWXU 00700 419#define LINUX_S_IRUSR 00400 420#define LINUX_S_IWUSR 00200 421#define LINUX_S_IXUSR 00100 422 423#define LINUX_S_IRWXG 00070 424#define LINUX_S_IRGRP 00040 425#define LINUX_S_IWGRP 00020 426#define LINUX_S_IXGRP 00010 427 428#define LINUX_S_IRWXO 00007 429#define LINUX_S_IROTH 00004 430#define LINUX_S_IWOTH 00002 431#define LINUX_S_IXOTH 00001 432 433#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 434#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 435#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 436#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 437#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 438#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 439#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 440 441/* 442 * ext2 size of an inode 443 */ 444#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 445 446/* 447 * ext2_icount_t abstraction 448 */ 449#define EXT2_ICOUNT_OPT_INCREMENT 0x01 450 451typedef struct ext2_icount *ext2_icount_t; 452 453/* 454 * Flags for ext2fs_bmap 455 */ 456#define BMAP_ALLOC 0x0001 457#define BMAP_SET 0x0002 458 459/* 460 * Returned flags from ext2fs_bmap 461 */ 462#define BMAP_RET_UNINIT 0x0001 463 464/* 465 * Flags for imager.c functions 466 */ 467#define IMAGER_FLAG_INODEMAP 1 468#define IMAGER_FLAG_SPARSEWRITE 2 469 470/* 471 * For checking structure magic numbers... 472 */ 473 474#define EXT2_CHECK_MAGIC(struct, code) \ 475 if ((struct)->magic != (code)) return (code) 476 477 478/* 479 * For ext2 compression support 480 */ 481#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 482#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 483 484/* 485 * Features supported by this version of the library 486 */ 487#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 488 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 489 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 490 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 491 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 492 EXT2_FEATURE_COMPAT_LAZY_BG|\ 493 EXT2_FEATURE_COMPAT_EXT_ATTR) 494 495/* This #ifdef is temporary until compression is fully supported */ 496#ifdef ENABLE_COMPRESSION 497#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 498/* If the below warning bugs you, then have 499 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 500 environment at configure time. */ 501 #warning "Compression support is experimental" 502#endif 503#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 504 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 505 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 506 EXT2_FEATURE_INCOMPAT_META_BG|\ 507 EXT3_FEATURE_INCOMPAT_RECOVER|\ 508 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 509 EXT4_FEATURE_INCOMPAT_FLEX_BG) 510#else 511#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 512 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 513 EXT2_FEATURE_INCOMPAT_META_BG|\ 514 EXT3_FEATURE_INCOMPAT_RECOVER|\ 515 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 516 EXT4_FEATURE_INCOMPAT_FLEX_BG) 517#endif 518#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 519 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 520 521/* 522 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 523 * to ext2fs_openfs() 524 */ 525#define EXT2_LIB_SOFTSUPP_INCOMPAT (EXT3_FEATURE_INCOMPAT_EXTENTS) 526#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 527 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 528 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 529 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) 530 531/* 532 * function prototypes 533 */ 534 535/* alloc.c */ 536extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 537 ext2fs_inode_bitmap map, ext2_ino_t *ret); 538extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 539 ext2fs_block_bitmap map, blk_t *ret); 540extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 541 blk_t finish, int num, 542 ext2fs_block_bitmap map, 543 blk_t *ret); 544extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 545 char *block_buf, blk_t *ret); 546 547/* alloc_sb.c */ 548extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 549 dgrp_t group, 550 ext2fs_block_bitmap bmap); 551 552/* alloc_stats.c */ 553void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 554void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 555 int inuse, int isdir); 556void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 557 558/* alloc_tables.c */ 559extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 560extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 561 ext2fs_block_bitmap bmap); 562 563/* badblocks.c */ 564extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 565extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 566extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 567extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 568extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 569 ext2_u32_iterate *ret); 570extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 571extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 572extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 573extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 574 575extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 576 int size); 577extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 578 blk_t blk); 579extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 580 blk_t blk); 581extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 582extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 583extern errcode_t 584 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 585 ext2_badblocks_iterate *ret); 586extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 587 blk_t *blk); 588extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 589extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 590 ext2_badblocks_list *dest); 591extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 592 ext2_badblocks_list bb2); 593extern int ext2fs_u32_list_count(ext2_u32_list bb); 594 595/* bb_compat */ 596extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 597extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 598extern int badblocks_list_test(badblocks_list bb, blk_t blk); 599extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 600 badblocks_iterate *ret); 601extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 602extern void badblocks_list_iterate_end(badblocks_iterate iter); 603extern void badblocks_list_free(badblocks_list bb); 604 605/* bb_inode.c */ 606extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 607 ext2_badblocks_list bb_list); 608 609/* bitmaps.c */ 610extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 611extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 612extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 613 ext2fs_generic_bitmap *dest); 614extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 615extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 616extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 617extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 618extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 619 const char *descr, 620 ext2fs_block_bitmap *ret); 621extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 622 const char *descr, 623 ext2fs_inode_bitmap *ret); 624extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 625 ext2_ino_t end, ext2_ino_t *oend); 626extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 627 blk_t end, blk_t *oend); 628extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 629extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 630extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 631extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 632extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 633 ext2fs_inode_bitmap bmap); 634extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 635 ext2fs_block_bitmap bmap); 636extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 637 ext2fs_block_bitmap bm2); 638extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 639 ext2fs_inode_bitmap bm2); 640extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 641 ext2_ino_t start, unsigned int num, 642 void *in); 643extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 644 ext2_ino_t start, unsigned int num, 645 void *out); 646extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 647 blk_t start, unsigned int num, 648 void *in); 649extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 650 blk_t start, unsigned int num, 651 void *out); 652 653 654/* block.c */ 655extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 656 ext2_ino_t ino, 657 int flags, 658 char *block_buf, 659 int (*func)(ext2_filsys fs, 660 blk_t *blocknr, 661 int blockcnt, 662 void *priv_data), 663 void *priv_data); 664errcode_t ext2fs_block_iterate2(ext2_filsys fs, 665 ext2_ino_t ino, 666 int flags, 667 char *block_buf, 668 int (*func)(ext2_filsys fs, 669 blk_t *blocknr, 670 e2_blkcnt_t blockcnt, 671 blk_t ref_blk, 672 int ref_offset, 673 void *priv_data), 674 void *priv_data); 675 676/* bmap.c */ 677extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 678 struct ext2_inode *inode, 679 char *block_buf, int bmap_flags, 680 blk_t block, blk_t *phys_blk); 681extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 682 struct ext2_inode *inode, 683 char *block_buf, int bmap_flags, blk64_t block, 684 int *ret_flags, blk64_t *phys_blk); 685 686#if 0 687/* bmove.c */ 688extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 689 ext2fs_block_bitmap reserve, 690 ext2fs_block_bitmap alloc_map, 691 int flags); 692#endif 693 694/* check_desc.c */ 695extern errcode_t ext2fs_check_desc(ext2_filsys fs); 696 697/* closefs.c */ 698extern errcode_t ext2fs_close(ext2_filsys fs); 699extern errcode_t ext2fs_flush(ext2_filsys fs); 700extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 701extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 702 dgrp_t group, 703 blk_t *ret_super_blk, 704 blk_t *ret_old_desc_blk, 705 blk_t *ret_new_desc_blk, 706 int *ret_meta_bg); 707extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 708 709/* dblist.c */ 710 711extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 712extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 713extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 714 blk_t blk, int blockcnt); 715extern void ext2fs_dblist_sort(ext2_dblist dblist, 716 EXT2_QSORT_TYPE (*sortfunc)(const void *, 717 const void *)); 718extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 719 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 720 void *priv_data), 721 void *priv_data); 722extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 723 blk_t blk, int blockcnt); 724extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 725 ext2_dblist *dest); 726extern int ext2fs_dblist_count(ext2_dblist dblist); 727extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 728 struct ext2_db_entry **entry); 729extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 730 731/* dblist_dir.c */ 732extern errcode_t 733 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 734 int flags, 735 char *block_buf, 736 int (*func)(ext2_ino_t dir, 737 int entry, 738 struct ext2_dir_entry *dirent, 739 int offset, 740 int blocksize, 741 char *buf, 742 void *priv_data), 743 void *priv_data); 744 745/* dirblock.c */ 746extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 747 void *buf); 748extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 749 void *buf, int flags); 750extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 751 void *buf); 752extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 753 void *buf, int flags); 754 755/* dirhash.c */ 756extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 757 const __u32 *seed, 758 ext2_dirhash_t *ret_hash, 759 ext2_dirhash_t *ret_minor_hash); 760 761 762/* dir_iterate.c */ 763extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 764 ext2_ino_t dir, 765 int flags, 766 char *block_buf, 767 int (*func)(struct ext2_dir_entry *dirent, 768 int offset, 769 int blocksize, 770 char *buf, 771 void *priv_data), 772 void *priv_data); 773extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 774 ext2_ino_t dir, 775 int flags, 776 char *block_buf, 777 int (*func)(ext2_ino_t dir, 778 int entry, 779 struct ext2_dir_entry *dirent, 780 int offset, 781 int blocksize, 782 char *buf, 783 void *priv_data), 784 void *priv_data); 785 786/* dupfs.c */ 787extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 788 789/* expanddir.c */ 790extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 791 792/* ext_attr.c */ 793extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 794 void *data); 795extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 796extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 797 void *buf); 798extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 799 char *block_buf, 800 int adjust, __u32 *newcount); 801 802/* extent.c */ 803extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 804extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 805 ext2_extent_handle_t *handle); 806extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 807 int flags, struct ext2fs_extent *extent); 808extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 809 struct ext2fs_extent *extent); 810extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 811 struct ext2fs_extent *extent); 812extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 813extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 814 struct ext2_extent_info *info); 815extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 816 blk64_t blk); 817 818/* fileio.c */ 819extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 820 struct ext2_inode *inode, 821 int flags, ext2_file_t *ret); 822extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 823 int flags, ext2_file_t *ret); 824extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 825extern errcode_t ext2fs_file_close(ext2_file_t file); 826extern errcode_t ext2fs_file_flush(ext2_file_t file); 827extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 828 unsigned int wanted, unsigned int *got); 829extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 830 unsigned int nbytes, unsigned int *written); 831extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 832 int whence, __u64 *ret_pos); 833extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 834 int whence, ext2_off_t *ret_pos); 835errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 836extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 837extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 838 839/* finddev.c */ 840extern char *ext2fs_find_block_device(dev_t device); 841 842/* flushb.c */ 843extern errcode_t ext2fs_sync_device(int fd, int flushb); 844 845/* freefs.c */ 846extern void ext2fs_free(ext2_filsys fs); 847extern void ext2fs_free_dblist(ext2_dblist dblist); 848extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 849extern void ext2fs_u32_list_free(ext2_u32_list bb); 850 851/* gen_bitmap.c */ 852extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 853extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 854 __u32 start, __u32 end, 855 __u32 real_end, 856 const char *descr, char *init_map, 857 ext2fs_generic_bitmap *ret); 858extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 859 __u32 end, 860 __u32 real_end, 861 const char *descr, 862 ext2fs_generic_bitmap *ret); 863extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 864 ext2fs_generic_bitmap *dest); 865extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 866extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 867 errcode_t magic, 868 errcode_t neq, 869 ext2_ino_t end, 870 ext2_ino_t *oend); 871extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 872extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 873 __u32 new_end, 874 __u32 new_real_end, 875 ext2fs_generic_bitmap bmap); 876extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 877 ext2fs_generic_bitmap bm1, 878 ext2fs_generic_bitmap bm2); 879extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 880 errcode_t magic, 881 __u32 start, __u32 num, 882 void *out); 883extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 884 errcode_t magic, 885 __u32 start, __u32 num, 886 void *in); 887 888/* getsize.c */ 889extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 890 blk_t *retblocks); 891 892/* getsectsize.c */ 893errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 894 895/* imager.c */ 896extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 897extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 898extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 899extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 900extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 901extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 902 903/* ind_block.c */ 904errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 905errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 906 907/* initialize.c */ 908extern errcode_t ext2fs_initialize(const char *name, int flags, 909 struct ext2_super_block *param, 910 io_manager manager, ext2_filsys *ret_fs); 911 912/* icount.c */ 913extern void ext2fs_free_icount(ext2_icount_t icount); 914extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 915 int flags, ext2_icount_t *ret); 916extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 917 unsigned int size, 918 ext2_icount_t hint, ext2_icount_t *ret); 919extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 920 unsigned int size, 921 ext2_icount_t *ret); 922extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 923 __u16 *ret); 924extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 925 __u16 *ret); 926extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 927 __u16 *ret); 928extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 929 __u16 count); 930extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 931errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 932 933/* inode.c */ 934extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 935extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 936 ext2_ino_t *ino, 937 struct ext2_inode *inode, 938 int bufsize); 939extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 940 ext2_inode_scan *ret_scan); 941extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 942extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 943 struct ext2_inode *inode); 944extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 945 int group); 946extern void ext2fs_set_inode_callback 947 (ext2_inode_scan scan, 948 errcode_t (*done_group)(ext2_filsys fs, 949 ext2_inode_scan scan, 950 dgrp_t group, 951 void * priv_data), 952 void *done_group_data); 953extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 954 int clear_flags); 955extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 956 struct ext2_inode * inode, 957 int bufsize); 958extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 959 struct ext2_inode * inode); 960extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 961 struct ext2_inode * inode, 962 int bufsize); 963extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 964 struct ext2_inode * inode); 965extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 966 struct ext2_inode * inode); 967extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 968extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 969 970/* inode_io.c */ 971extern io_manager inode_io_manager; 972extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 973 char **name); 974extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 975 struct ext2_inode *inode, 976 char **name); 977 978/* ismounted.c */ 979extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 980extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 981 char *mtpt, int mtlen); 982 983/* namei.c */ 984extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 985 int namelen, char *buf, ext2_ino_t *inode); 986extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 987 const char *name, ext2_ino_t *inode); 988errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 989 const char *name, ext2_ino_t *inode); 990extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 991 ext2_ino_t inode, ext2_ino_t *res_inode); 992 993/* native.c */ 994int ext2fs_native_flag(void); 995 996/* newdir.c */ 997extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 998 ext2_ino_t parent_ino, char **block); 999 1000/* mkdir.c */ 1001extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1002 const char *name); 1003 1004/* mkjournal.c */ 1005extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1006 __u32 size, int flags, 1007 char **ret_jsb); 1008extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1009 ext2_filsys journal_dev); 1010extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1011 int flags); 1012extern int ext2fs_default_journal_size(__u64 blocks); 1013 1014/* openfs.c */ 1015extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1016 unsigned int block_size, io_manager manager, 1017 ext2_filsys *ret_fs); 1018extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1019 int flags, int superblock, 1020 unsigned int block_size, io_manager manager, 1021 ext2_filsys *ret_fs); 1022extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1023 dgrp_t i); 1024errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1025errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1026errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1027 1028/* get_pathname.c */ 1029extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1030 char **name); 1031 1032/* link.c */ 1033errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1034 ext2_ino_t ino, int flags); 1035errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1036 ext2_ino_t ino, int flags); 1037 1038/* read_bb.c */ 1039extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1040 ext2_badblocks_list *bb_list); 1041 1042/* read_bb_file.c */ 1043extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1044 ext2_badblocks_list *bb_list, 1045 void *priv_data, 1046 void (*invalid)(ext2_filsys fs, 1047 blk_t blk, 1048 char *badstr, 1049 void *priv_data)); 1050extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1051 ext2_badblocks_list *bb_list, 1052 void (*invalid)(ext2_filsys fs, 1053 blk_t blk)); 1054 1055/* res_gdt.c */ 1056extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1057 1058/* swapfs.c */ 1059extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1060 int has_header); 1061extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1062 struct ext2_ext_attr_header *from_hdr); 1063extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1064 struct ext2_ext_attr_entry *from_entry); 1065extern void ext2fs_swap_super(struct ext2_super_block * super); 1066extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1067extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1068 struct ext2_inode_large *f, int hostorder, 1069 int bufsize); 1070extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1071 struct ext2_inode *f, int hostorder); 1072 1073/* valid_blk.c */ 1074extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1075 1076/* version.c */ 1077extern int ext2fs_parse_version_string(const char *ver_string); 1078extern int ext2fs_get_library_version(const char **ver_string, 1079 const char **date_string); 1080 1081/* write_bb_file.c */ 1082extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1083 unsigned int flags, 1084 FILE *f); 1085 1086 1087/* inline functions */ 1088extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1089extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1090extern errcode_t ext2fs_free_mem(void *ptr); 1091extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1092 unsigned long size, void *ptr); 1093extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1094extern void ext2fs_mark_changed(ext2_filsys fs); 1095extern int ext2fs_test_changed(ext2_filsys fs); 1096extern void ext2fs_mark_valid(ext2_filsys fs); 1097extern void ext2fs_unmark_valid(ext2_filsys fs); 1098extern int ext2fs_test_valid(ext2_filsys fs); 1099extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1100extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1101extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1102extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1103extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1104extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1105extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1106extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1107extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1108 struct ext2_inode *inode); 1109extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1110 1111/* 1112 * The actual inlined functions definitions themselves... 1113 * 1114 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1115 * functions at all! 1116 */ 1117#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1118#ifdef INCLUDE_INLINE_FUNCS 1119#define _INLINE_ extern 1120#else 1121#ifdef __GNUC__ 1122#define _INLINE_ extern __inline__ 1123#else /* For Watcom C */ 1124#define _INLINE_ extern inline 1125#endif 1126#endif 1127 1128#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1129#include <string.h> 1130/* 1131 * Allocate memory 1132 */ 1133_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1134{ 1135 void *pp; 1136 1137 pp = malloc(size); 1138 if (!pp) 1139 return EXT2_ET_NO_MEMORY; 1140 memcpy(ptr, &pp, sizeof (pp)); 1141 return 0; 1142} 1143 1144_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1145{ 1146 if (count && (-1UL)/count<size) 1147 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1148 return ext2fs_get_mem(count*size, ptr); 1149} 1150 1151/* 1152 * Free memory 1153 */ 1154_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1155{ 1156 void *p; 1157 1158 memcpy(&p, ptr, sizeof(p)); 1159 free(p); 1160 p = 0; 1161 memcpy(ptr, &p, sizeof(p)); 1162 return 0; 1163} 1164 1165/* 1166 * Resize memory 1167 */ 1168_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1169 unsigned long size, void *ptr) 1170{ 1171 void *p; 1172 1173 /* Use "memcpy" for pointer assignments here to avoid problems 1174 * with C99 strict type aliasing rules. */ 1175 memcpy(&p, ptr, sizeof(p)); 1176 p = realloc(p, size); 1177 if (!p) 1178 return EXT2_ET_NO_MEMORY; 1179 memcpy(ptr, &p, sizeof(p)); 1180 return 0; 1181} 1182#endif /* Custom memory routines */ 1183 1184/* 1185 * Mark a filesystem superblock as dirty 1186 */ 1187_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1188{ 1189 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1190} 1191 1192/* 1193 * Mark a filesystem as changed 1194 */ 1195_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1196{ 1197 fs->flags |= EXT2_FLAG_CHANGED; 1198} 1199 1200/* 1201 * Check to see if a filesystem has changed 1202 */ 1203_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1204{ 1205 return (fs->flags & EXT2_FLAG_CHANGED); 1206} 1207 1208/* 1209 * Mark a filesystem as valid 1210 */ 1211_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1212{ 1213 fs->flags |= EXT2_FLAG_VALID; 1214} 1215 1216/* 1217 * Mark a filesystem as NOT valid 1218 */ 1219_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1220{ 1221 fs->flags &= ~EXT2_FLAG_VALID; 1222} 1223 1224/* 1225 * Check to see if a filesystem is valid 1226 */ 1227_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1228{ 1229 return (fs->flags & EXT2_FLAG_VALID); 1230} 1231 1232/* 1233 * Mark the inode bitmap as dirty 1234 */ 1235_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1236{ 1237 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1238} 1239 1240/* 1241 * Mark the block bitmap as dirty 1242 */ 1243_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1244{ 1245 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1246} 1247 1248/* 1249 * Check to see if a filesystem's inode bitmap is dirty 1250 */ 1251_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1252{ 1253 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1254} 1255 1256/* 1257 * Check to see if a filesystem's block bitmap is dirty 1258 */ 1259_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1260{ 1261 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1262} 1263 1264/* 1265 * Return the group # of a block 1266 */ 1267_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1268{ 1269 return (blk - fs->super->s_first_data_block) / 1270 fs->super->s_blocks_per_group; 1271} 1272 1273/* 1274 * Return the group # of an inode number 1275 */ 1276_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1277{ 1278 return (ino - 1) / fs->super->s_inodes_per_group; 1279} 1280 1281/* 1282 * Return the first block (inclusive) in a group 1283 */ 1284_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1285{ 1286 return fs->super->s_first_data_block + 1287 (group * fs->super->s_blocks_per_group); 1288} 1289 1290/* 1291 * Return the last block (inclusive) in a group 1292 */ 1293_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1294{ 1295 return (group == fs->group_desc_count - 1 ? 1296 fs->super->s_blocks_count - 1 : 1297 ext2fs_group_first_block(fs, group) + 1298 (fs->super->s_blocks_per_group - 1)); 1299} 1300 1301_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1302 struct ext2_inode *inode) 1303{ 1304 return inode->i_blocks - 1305 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1306} 1307 1308/* 1309 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1310 */ 1311_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1312{ 1313 if (!a) 1314 return 0; 1315 return ((a - 1) / b) + 1; 1316} 1317#undef _INLINE_ 1318#endif 1319 1320#ifdef __cplusplus 1321} 1322#endif 1323 1324#endif /* _EXT2FS_EXT2FS_H */ 1325