ext2fs.h revision 84b239aea4da04c7a569b428d3abf6c720e82645
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 * More callback functions 235 */ 236 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 237 blk64_t *ret); 238 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 239}; 240 241#if EXT2_FLAT_INCLUDES 242#include "e2_bitops.h" 243#else 244#include <ext2fs/bitops.h> 245#endif 246 247/* 248 * Return flags for the block iterator functions 249 */ 250#define BLOCK_CHANGED 1 251#define BLOCK_ABORT 2 252#define BLOCK_ERROR 4 253 254/* 255 * Block interate flags 256 * 257 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 258 * function should be called on blocks where the block number is zero. 259 * This is used by ext2fs_expand_dir() to be able to add a new block 260 * to an inode. It can also be used for programs that want to be able 261 * to deal with files that contain "holes". 262 * 263 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 264 * the indirect, doubly indirect, etc. blocks should be called after 265 * all of the blocks containined in the indirect blocks are processed. 266 * This is useful if you are going to be deallocating blocks from an 267 * inode. 268 * 269 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 270 * called for data blocks only. 271 * 272 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 273 * modify returned block number. 274 * 275 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 276 * ext2fs_block_iterate2 that large files won't be accepted. 277 */ 278#define BLOCK_FLAG_APPEND 1 279#define BLOCK_FLAG_HOLE 1 280#define BLOCK_FLAG_DEPTH_TRAVERSE 2 281#define BLOCK_FLAG_DATA_ONLY 4 282#define BLOCK_FLAG_READ_ONLY 8 283 284#define BLOCK_FLAG_NO_LARGE 0x1000 285 286/* 287 * Magic "block count" return values for the block iterator function. 288 */ 289#define BLOCK_COUNT_IND (-1) 290#define BLOCK_COUNT_DIND (-2) 291#define BLOCK_COUNT_TIND (-3) 292#define BLOCK_COUNT_TRANSLATOR (-4) 293 294#if 0 295/* 296 * Flags for ext2fs_move_blocks 297 */ 298#define EXT2_BMOVE_GET_DBLIST 0x0001 299#define EXT2_BMOVE_DEBUG 0x0002 300#endif 301 302/* 303 * Generic (non-filesystem layout specific) extents structure 304 */ 305 306#define EXT2_EXTENT_FLAGS_LEAF 0x0001 307#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 308#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 309 310struct ext2fs_extent { 311 blk64_t e_pblk; /* first physical block */ 312 blk64_t e_lblk; /* first logical block extent covers */ 313 __u32 e_len; /* number of blocks covered by extent */ 314 __u32 e_flags; /* extent flags */ 315}; 316 317typedef struct ext2_extent_handle *ext2_extent_handle_t; 318typedef struct ext2_extent_path *ext2_extent_path_t; 319 320/* 321 * Flags used by ext2fs_extent_get() 322 */ 323#define EXT2_EXTENT_CURRENT 0x0000 324#define EXT2_EXTENT_MOVE_MASK 0x000F 325#define EXT2_EXTENT_ROOT 0x0001 326#define EXT2_EXTENT_LAST_LEAF 0x0002 327#define EXT2_EXTENT_FIRST_SIB 0x0003 328#define EXT2_EXTENT_LAST_SIB 0x0004 329#define EXT2_EXTENT_NEXT_SIB 0x0005 330#define EXT2_EXTENT_PREV_SIB 0x0006 331#define EXT2_EXTENT_NEXT_LEAF 0x0007 332#define EXT2_EXTENT_PREV_LEAF 0x0008 333#define EXT2_EXTENT_NEXT 0x0009 334#define EXT2_EXTENT_PREV 0x000A 335#define EXT2_EXTENT_UP 0x000B 336#define EXT2_EXTENT_DOWN 0x000C 337#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 338 339/* 340 * Flags used by ext2fs_extent_insert() 341 */ 342#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 343#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 344 345/* 346 * Flags used by ext2fs_extent_delete() 347 */ 348#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 349 350/* 351 * Flags used by ext2fs_extent_set_bmap() 352 */ 353#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 354 355/* 356 * Data structure returned by ext2fs_extent_get_info() 357 */ 358struct ext2_extent_info { 359 int curr_entry; 360 int curr_level; 361 int num_entries; 362 int max_entries; 363 int max_depth; 364 int bytes_avail; 365 blk64_t max_lblk; 366 blk64_t max_pblk; 367 __u32 max_len; 368 __u32 max_uninit_len; 369}; 370 371/* 372 * Flags for directory block reading and writing functions 373 */ 374#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 375 376/* 377 * Return flags for the directory iterator functions 378 */ 379#define DIRENT_CHANGED 1 380#define DIRENT_ABORT 2 381#define DIRENT_ERROR 3 382 383/* 384 * Directory iterator flags 385 */ 386 387#define DIRENT_FLAG_INCLUDE_EMPTY 1 388#define DIRENT_FLAG_INCLUDE_REMOVED 2 389 390#define DIRENT_DOT_FILE 1 391#define DIRENT_DOT_DOT_FILE 2 392#define DIRENT_OTHER_FILE 3 393#define DIRENT_DELETED_FILE 4 394 395/* 396 * Inode scan definitions 397 */ 398typedef struct ext2_struct_inode_scan *ext2_inode_scan; 399 400/* 401 * ext2fs_scan flags 402 */ 403#define EXT2_SF_CHK_BADBLOCKS 0x0001 404#define EXT2_SF_BAD_INODE_BLK 0x0002 405#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 406#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 407#define EXT2_SF_DO_LAZY 0x0010 408 409/* 410 * ext2fs_check_if_mounted flags 411 */ 412#define EXT2_MF_MOUNTED 1 413#define EXT2_MF_ISROOT 2 414#define EXT2_MF_READONLY 4 415#define EXT2_MF_SWAP 8 416#define EXT2_MF_BUSY 16 417 418/* 419 * Ext2/linux mode flags. We define them here so that we don't need 420 * to depend on the OS's sys/stat.h, since we may be compiling on a 421 * non-Linux system. 422 */ 423#define LINUX_S_IFMT 00170000 424#define LINUX_S_IFSOCK 0140000 425#define LINUX_S_IFLNK 0120000 426#define LINUX_S_IFREG 0100000 427#define LINUX_S_IFBLK 0060000 428#define LINUX_S_IFDIR 0040000 429#define LINUX_S_IFCHR 0020000 430#define LINUX_S_IFIFO 0010000 431#define LINUX_S_ISUID 0004000 432#define LINUX_S_ISGID 0002000 433#define LINUX_S_ISVTX 0001000 434 435#define LINUX_S_IRWXU 00700 436#define LINUX_S_IRUSR 00400 437#define LINUX_S_IWUSR 00200 438#define LINUX_S_IXUSR 00100 439 440#define LINUX_S_IRWXG 00070 441#define LINUX_S_IRGRP 00040 442#define LINUX_S_IWGRP 00020 443#define LINUX_S_IXGRP 00010 444 445#define LINUX_S_IRWXO 00007 446#define LINUX_S_IROTH 00004 447#define LINUX_S_IWOTH 00002 448#define LINUX_S_IXOTH 00001 449 450#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 451#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 452#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 453#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 454#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 455#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 456#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 457 458/* 459 * ext2 size of an inode 460 */ 461#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 462 463/* 464 * ext2_icount_t abstraction 465 */ 466#define EXT2_ICOUNT_OPT_INCREMENT 0x01 467 468typedef struct ext2_icount *ext2_icount_t; 469 470/* 471 * Flags for ext2fs_bmap 472 */ 473#define BMAP_ALLOC 0x0001 474#define BMAP_SET 0x0002 475 476/* 477 * Returned flags from ext2fs_bmap 478 */ 479#define BMAP_RET_UNINIT 0x0001 480 481/* 482 * Flags for imager.c functions 483 */ 484#define IMAGER_FLAG_INODEMAP 1 485#define IMAGER_FLAG_SPARSEWRITE 2 486 487/* 488 * For checking structure magic numbers... 489 */ 490 491#define EXT2_CHECK_MAGIC(struct, code) \ 492 if ((struct)->magic != (code)) return (code) 493 494 495/* 496 * For ext2 compression support 497 */ 498#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 499#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 500 501/* 502 * Features supported by this version of the library 503 */ 504#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 505 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 506 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 507 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 508 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 509 EXT2_FEATURE_COMPAT_EXT_ATTR) 510 511/* This #ifdef is temporary until compression is fully supported */ 512#ifdef ENABLE_COMPRESSION 513#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 514/* If the below warning bugs you, then have 515 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 516 environment at configure time. */ 517 #warning "Compression support is experimental" 518#endif 519#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 520 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 521 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 522 EXT2_FEATURE_INCOMPAT_META_BG|\ 523 EXT3_FEATURE_INCOMPAT_RECOVER|\ 524 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 525 EXT4_FEATURE_INCOMPAT_FLEX_BG) 526#else 527#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 528 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 529 EXT2_FEATURE_INCOMPAT_META_BG|\ 530 EXT3_FEATURE_INCOMPAT_RECOVER|\ 531 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 532 EXT4_FEATURE_INCOMPAT_FLEX_BG) 533#endif 534#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 535 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 536 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 537 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 538 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 539 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 540 541/* 542 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 543 * to ext2fs_openfs() 544 */ 545#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 546#define EXT2_LIB_SOFTSUPP_RO_COMPAT (0) 547 548/* 549 * function prototypes 550 */ 551 552/* alloc.c */ 553extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 554 ext2fs_inode_bitmap map, ext2_ino_t *ret); 555extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 556 ext2fs_block_bitmap map, blk_t *ret); 557extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 558 blk_t finish, int num, 559 ext2fs_block_bitmap map, 560 blk_t *ret); 561extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 562 char *block_buf, blk_t *ret); 563extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 564 errcode_t (*func)(ext2_filsys fs, 565 blk64_t goal, 566 blk64_t *ret), 567 errcode_t (**old)(ext2_filsys fs, 568 blk64_t goal, 569 blk64_t *ret)); 570 571/* alloc_sb.c */ 572extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 573 dgrp_t group, 574 ext2fs_block_bitmap bmap); 575extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 576 void (*func)(ext2_filsys fs, 577 blk64_t blk, 578 int inuse), 579 void (**old)(ext2_filsys fs, 580 blk64_t blk, 581 int inuse)); 582 583/* alloc_stats.c */ 584void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 585void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 586 int inuse, int isdir); 587void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 588 589/* alloc_tables.c */ 590extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 591extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 592 ext2fs_block_bitmap bmap); 593 594/* badblocks.c */ 595extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 596extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 597extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 598extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 599extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 600 ext2_u32_iterate *ret); 601extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 602extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 603extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 604extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 605 606extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 607 int size); 608extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 609 blk_t blk); 610extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 611 blk_t blk); 612extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 613extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 614extern errcode_t 615 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 616 ext2_badblocks_iterate *ret); 617extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 618 blk_t *blk); 619extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 620extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 621 ext2_badblocks_list *dest); 622extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 623 ext2_badblocks_list bb2); 624extern int ext2fs_u32_list_count(ext2_u32_list bb); 625 626/* bb_compat */ 627extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 628extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 629extern int badblocks_list_test(badblocks_list bb, blk_t blk); 630extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 631 badblocks_iterate *ret); 632extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 633extern void badblocks_list_iterate_end(badblocks_iterate iter); 634extern void badblocks_list_free(badblocks_list bb); 635 636/* bb_inode.c */ 637extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 638 ext2_badblocks_list bb_list); 639 640/* bitmaps.c */ 641extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 642extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 643extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 644 ext2fs_generic_bitmap *dest); 645extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 646extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 647extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 648extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 649extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 650 const char *descr, 651 ext2fs_block_bitmap *ret); 652extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 653 const char *descr, 654 ext2fs_inode_bitmap *ret); 655extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 656 ext2_ino_t end, ext2_ino_t *oend); 657extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 658 blk_t end, blk_t *oend); 659extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 660extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 661extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 662extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 663extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 664 ext2fs_inode_bitmap bmap); 665extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 666 ext2fs_block_bitmap bmap); 667extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 668 ext2fs_block_bitmap bm2); 669extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 670 ext2fs_inode_bitmap bm2); 671extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 672 ext2_ino_t start, unsigned int num, 673 void *in); 674extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 675 ext2_ino_t start, unsigned int num, 676 void *out); 677extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 678 blk_t start, unsigned int num, 679 void *in); 680extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 681 blk_t start, unsigned int num, 682 void *out); 683 684 685/* block.c */ 686extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 687 ext2_ino_t ino, 688 int flags, 689 char *block_buf, 690 int (*func)(ext2_filsys fs, 691 blk_t *blocknr, 692 int blockcnt, 693 void *priv_data), 694 void *priv_data); 695errcode_t ext2fs_block_iterate2(ext2_filsys fs, 696 ext2_ino_t ino, 697 int flags, 698 char *block_buf, 699 int (*func)(ext2_filsys fs, 700 blk_t *blocknr, 701 e2_blkcnt_t blockcnt, 702 blk_t ref_blk, 703 int ref_offset, 704 void *priv_data), 705 void *priv_data); 706 707/* bmap.c */ 708extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 709 struct ext2_inode *inode, 710 char *block_buf, int bmap_flags, 711 blk_t block, blk_t *phys_blk); 712extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 713 struct ext2_inode *inode, 714 char *block_buf, int bmap_flags, blk64_t block, 715 int *ret_flags, blk64_t *phys_blk); 716 717#if 0 718/* bmove.c */ 719extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 720 ext2fs_block_bitmap reserve, 721 ext2fs_block_bitmap alloc_map, 722 int flags); 723#endif 724 725/* check_desc.c */ 726extern errcode_t ext2fs_check_desc(ext2_filsys fs); 727 728/* closefs.c */ 729extern errcode_t ext2fs_close(ext2_filsys fs); 730extern errcode_t ext2fs_flush(ext2_filsys fs); 731extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 732extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 733 dgrp_t group, 734 blk_t *ret_super_blk, 735 blk_t *ret_old_desc_blk, 736 blk_t *ret_new_desc_blk, 737 int *ret_meta_bg); 738extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 739 740/* csum.c */ 741extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 742extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 743extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 744 745/* dblist.c */ 746 747extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 748extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 749extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 750 blk_t blk, int blockcnt); 751extern void ext2fs_dblist_sort(ext2_dblist dblist, 752 EXT2_QSORT_TYPE (*sortfunc)(const void *, 753 const void *)); 754extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 755 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 756 void *priv_data), 757 void *priv_data); 758extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 759 blk_t blk, int blockcnt); 760extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 761 ext2_dblist *dest); 762extern int ext2fs_dblist_count(ext2_dblist dblist); 763extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 764 struct ext2_db_entry **entry); 765extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 766 767/* dblist_dir.c */ 768extern errcode_t 769 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 770 int flags, 771 char *block_buf, 772 int (*func)(ext2_ino_t dir, 773 int entry, 774 struct ext2_dir_entry *dirent, 775 int offset, 776 int blocksize, 777 char *buf, 778 void *priv_data), 779 void *priv_data); 780 781/* dirblock.c */ 782extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 783 void *buf); 784extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 785 void *buf, int flags); 786extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 787 void *buf); 788extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 789 void *buf, int flags); 790 791/* dirhash.c */ 792extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 793 const __u32 *seed, 794 ext2_dirhash_t *ret_hash, 795 ext2_dirhash_t *ret_minor_hash); 796 797 798/* dir_iterate.c */ 799extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 800 ext2_ino_t dir, 801 int flags, 802 char *block_buf, 803 int (*func)(struct ext2_dir_entry *dirent, 804 int offset, 805 int blocksize, 806 char *buf, 807 void *priv_data), 808 void *priv_data); 809extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 810 ext2_ino_t dir, 811 int flags, 812 char *block_buf, 813 int (*func)(ext2_ino_t dir, 814 int entry, 815 struct ext2_dir_entry *dirent, 816 int offset, 817 int blocksize, 818 char *buf, 819 void *priv_data), 820 void *priv_data); 821 822/* dupfs.c */ 823extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 824 825/* expanddir.c */ 826extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 827 828/* ext_attr.c */ 829extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 830 void *data); 831extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 832extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 833 void *buf); 834extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 835 char *block_buf, 836 int adjust, __u32 *newcount); 837 838/* extent.c */ 839extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 840extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 841 ext2_extent_handle_t *handle); 842extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 843 struct ext2_inode *inode, 844 ext2_extent_handle_t *ret_handle); 845extern void ext2fs_extent_free(ext2_extent_handle_t handle); 846extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 847 int flags, struct ext2fs_extent *extent); 848extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 849 struct ext2fs_extent *extent); 850extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 851 struct ext2fs_extent *extent); 852extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 853 blk64_t logical, blk64_t physical, 854 int flags); 855extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 856extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 857 struct ext2_extent_info *info); 858extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 859 blk64_t blk); 860 861/* fileio.c */ 862extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 863 struct ext2_inode *inode, 864 int flags, ext2_file_t *ret); 865extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 866 int flags, ext2_file_t *ret); 867extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 868extern errcode_t ext2fs_file_close(ext2_file_t file); 869extern errcode_t ext2fs_file_flush(ext2_file_t file); 870extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 871 unsigned int wanted, unsigned int *got); 872extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 873 unsigned int nbytes, unsigned int *written); 874extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 875 int whence, __u64 *ret_pos); 876extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 877 int whence, ext2_off_t *ret_pos); 878errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 879extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 880extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 881 882/* finddev.c */ 883extern char *ext2fs_find_block_device(dev_t device); 884 885/* flushb.c */ 886extern errcode_t ext2fs_sync_device(int fd, int flushb); 887 888/* freefs.c */ 889extern void ext2fs_free(ext2_filsys fs); 890extern void ext2fs_free_dblist(ext2_dblist dblist); 891extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 892extern void ext2fs_u32_list_free(ext2_u32_list bb); 893 894/* gen_bitmap.c */ 895extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 896extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 897 __u32 start, __u32 end, 898 __u32 real_end, 899 const char *descr, char *init_map, 900 ext2fs_generic_bitmap *ret); 901extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 902 __u32 end, 903 __u32 real_end, 904 const char *descr, 905 ext2fs_generic_bitmap *ret); 906extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 907 ext2fs_generic_bitmap *dest); 908extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 909extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 910 errcode_t magic, 911 errcode_t neq, 912 ext2_ino_t end, 913 ext2_ino_t *oend); 914extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 915extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 916 __u32 new_end, 917 __u32 new_real_end, 918 ext2fs_generic_bitmap bmap); 919extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 920 ext2fs_generic_bitmap bm1, 921 ext2fs_generic_bitmap bm2); 922extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 923 errcode_t magic, 924 __u32 start, __u32 num, 925 void *out); 926extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 927 errcode_t magic, 928 __u32 start, __u32 num, 929 void *in); 930 931/* getsize.c */ 932extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 933 blk_t *retblocks); 934extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 935 blk64_t *retblocks); 936 937/* getsectsize.c */ 938errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 939 940/* i_block.c */ 941errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 942 blk64_t num_blocks); 943errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 944 blk64_t num_blocks); 945errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 946 947/* imager.c */ 948extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 949extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 950extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 951extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 952extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 953extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 954 955/* ind_block.c */ 956errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 957errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 958 959/* initialize.c */ 960extern errcode_t ext2fs_initialize(const char *name, int flags, 961 struct ext2_super_block *param, 962 io_manager manager, ext2_filsys *ret_fs); 963 964/* icount.c */ 965extern void ext2fs_free_icount(ext2_icount_t icount); 966extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 967 int flags, ext2_icount_t *ret); 968extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 969 unsigned int size, 970 ext2_icount_t hint, ext2_icount_t *ret); 971extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 972 unsigned int size, 973 ext2_icount_t *ret); 974extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 975 __u16 *ret); 976extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 977 __u16 *ret); 978extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 979 __u16 *ret); 980extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 981 __u16 count); 982extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 983errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 984 985/* inode.c */ 986extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 987extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 988 ext2_ino_t *ino, 989 struct ext2_inode *inode, 990 int bufsize); 991extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 992 ext2_inode_scan *ret_scan); 993extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 994extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 995 struct ext2_inode *inode); 996extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 997 int group); 998extern void ext2fs_set_inode_callback 999 (ext2_inode_scan scan, 1000 errcode_t (*done_group)(ext2_filsys fs, 1001 ext2_inode_scan scan, 1002 dgrp_t group, 1003 void * priv_data), 1004 void *done_group_data); 1005extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1006 int clear_flags); 1007extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1008 struct ext2_inode * inode, 1009 int bufsize); 1010extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1011 struct ext2_inode * inode); 1012extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1013 struct ext2_inode * inode, 1014 int bufsize); 1015extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1016 struct ext2_inode * inode); 1017extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1018 struct ext2_inode * inode); 1019extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1020extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1021 1022/* inode_io.c */ 1023extern io_manager inode_io_manager; 1024extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1025 char **name); 1026extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1027 struct ext2_inode *inode, 1028 char **name); 1029 1030/* ismounted.c */ 1031extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1032extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1033 char *mtpt, int mtlen); 1034 1035/* namei.c */ 1036extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1037 int namelen, char *buf, ext2_ino_t *inode); 1038extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1039 const char *name, ext2_ino_t *inode); 1040errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1041 const char *name, ext2_ino_t *inode); 1042extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1043 ext2_ino_t inode, ext2_ino_t *res_inode); 1044 1045/* native.c */ 1046int ext2fs_native_flag(void); 1047 1048/* newdir.c */ 1049extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1050 ext2_ino_t parent_ino, char **block); 1051 1052/* mkdir.c */ 1053extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1054 const char *name); 1055 1056/* mkjournal.c */ 1057extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1058 blk_t *ret_blk, int *ret_count); 1059extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1060 __u32 size, int flags, 1061 char **ret_jsb); 1062extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1063 ext2_filsys journal_dev); 1064extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1065 int flags); 1066extern int ext2fs_default_journal_size(__u64 blocks); 1067 1068/* openfs.c */ 1069extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1070 unsigned int block_size, io_manager manager, 1071 ext2_filsys *ret_fs); 1072extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1073 int flags, int superblock, 1074 unsigned int block_size, io_manager manager, 1075 ext2_filsys *ret_fs); 1076extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1077 dgrp_t i); 1078errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1079errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1080errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1081 1082/* get_pathname.c */ 1083extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1084 char **name); 1085 1086/* link.c */ 1087errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1088 ext2_ino_t ino, int flags); 1089errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1090 ext2_ino_t ino, int flags); 1091 1092/* read_bb.c */ 1093extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1094 ext2_badblocks_list *bb_list); 1095 1096/* read_bb_file.c */ 1097extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1098 ext2_badblocks_list *bb_list, 1099 void *priv_data, 1100 void (*invalid)(ext2_filsys fs, 1101 blk_t blk, 1102 char *badstr, 1103 void *priv_data)); 1104extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1105 ext2_badblocks_list *bb_list, 1106 void (*invalid)(ext2_filsys fs, 1107 blk_t blk)); 1108 1109/* res_gdt.c */ 1110extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1111 1112/* swapfs.c */ 1113extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1114 int has_header); 1115extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1116 struct ext2_ext_attr_header *from_hdr); 1117extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1118 struct ext2_ext_attr_entry *from_entry); 1119extern void ext2fs_swap_super(struct ext2_super_block * super); 1120extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1121extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1122 struct ext2_inode_large *f, int hostorder, 1123 int bufsize); 1124extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1125 struct ext2_inode *f, int hostorder); 1126 1127/* valid_blk.c */ 1128extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1129 1130/* version.c */ 1131extern int ext2fs_parse_version_string(const char *ver_string); 1132extern int ext2fs_get_library_version(const char **ver_string, 1133 const char **date_string); 1134 1135/* write_bb_file.c */ 1136extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1137 unsigned int flags, 1138 FILE *f); 1139 1140 1141/* inline functions */ 1142extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1143extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1144extern errcode_t ext2fs_free_mem(void *ptr); 1145extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1146 unsigned long size, void *ptr); 1147extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1148extern void ext2fs_mark_changed(ext2_filsys fs); 1149extern int ext2fs_test_changed(ext2_filsys fs); 1150extern void ext2fs_mark_valid(ext2_filsys fs); 1151extern void ext2fs_unmark_valid(ext2_filsys fs); 1152extern int ext2fs_test_valid(ext2_filsys fs); 1153extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1154extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1155extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1156extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1157extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1158extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1159extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1160extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1161extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1162 struct ext2_inode *inode); 1163extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1164 1165/* 1166 * The actual inlined functions definitions themselves... 1167 * 1168 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1169 * functions at all! 1170 */ 1171#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1172#ifdef INCLUDE_INLINE_FUNCS 1173#define _INLINE_ extern 1174#else 1175#ifdef __GNUC__ 1176#define _INLINE_ extern __inline__ 1177#else /* For Watcom C */ 1178#define _INLINE_ extern inline 1179#endif 1180#endif 1181 1182#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1183#include <string.h> 1184/* 1185 * Allocate memory 1186 */ 1187_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1188{ 1189 void *pp; 1190 1191 pp = malloc(size); 1192 if (!pp) 1193 return EXT2_ET_NO_MEMORY; 1194 memcpy(ptr, &pp, sizeof (pp)); 1195 return 0; 1196} 1197 1198_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1199{ 1200 if (count && (-1UL)/count<size) 1201 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1202 return ext2fs_get_mem(count*size, ptr); 1203} 1204 1205/* 1206 * Free memory 1207 */ 1208_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1209{ 1210 void *p; 1211 1212 memcpy(&p, ptr, sizeof(p)); 1213 free(p); 1214 p = 0; 1215 memcpy(ptr, &p, sizeof(p)); 1216 return 0; 1217} 1218 1219/* 1220 * Resize memory 1221 */ 1222_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1223 unsigned long size, void *ptr) 1224{ 1225 void *p; 1226 1227 /* Use "memcpy" for pointer assignments here to avoid problems 1228 * with C99 strict type aliasing rules. */ 1229 memcpy(&p, ptr, sizeof(p)); 1230 p = realloc(p, size); 1231 if (!p) 1232 return EXT2_ET_NO_MEMORY; 1233 memcpy(ptr, &p, sizeof(p)); 1234 return 0; 1235} 1236#endif /* Custom memory routines */ 1237 1238/* 1239 * Mark a filesystem superblock as dirty 1240 */ 1241_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1242{ 1243 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1244} 1245 1246/* 1247 * Mark a filesystem as changed 1248 */ 1249_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1250{ 1251 fs->flags |= EXT2_FLAG_CHANGED; 1252} 1253 1254/* 1255 * Check to see if a filesystem has changed 1256 */ 1257_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1258{ 1259 return (fs->flags & EXT2_FLAG_CHANGED); 1260} 1261 1262/* 1263 * Mark a filesystem as valid 1264 */ 1265_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1266{ 1267 fs->flags |= EXT2_FLAG_VALID; 1268} 1269 1270/* 1271 * Mark a filesystem as NOT valid 1272 */ 1273_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1274{ 1275 fs->flags &= ~EXT2_FLAG_VALID; 1276} 1277 1278/* 1279 * Check to see if a filesystem is valid 1280 */ 1281_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1282{ 1283 return (fs->flags & EXT2_FLAG_VALID); 1284} 1285 1286/* 1287 * Mark the inode bitmap as dirty 1288 */ 1289_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1290{ 1291 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1292} 1293 1294/* 1295 * Mark the block bitmap as dirty 1296 */ 1297_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1298{ 1299 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1300} 1301 1302/* 1303 * Check to see if a filesystem's inode bitmap is dirty 1304 */ 1305_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1306{ 1307 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1308} 1309 1310/* 1311 * Check to see if a filesystem's block bitmap is dirty 1312 */ 1313_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1314{ 1315 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1316} 1317 1318/* 1319 * Return the group # of a block 1320 */ 1321_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1322{ 1323 return (blk - fs->super->s_first_data_block) / 1324 fs->super->s_blocks_per_group; 1325} 1326 1327/* 1328 * Return the group # of an inode number 1329 */ 1330_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1331{ 1332 return (ino - 1) / fs->super->s_inodes_per_group; 1333} 1334 1335/* 1336 * Return the first block (inclusive) in a group 1337 */ 1338_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1339{ 1340 return fs->super->s_first_data_block + 1341 (group * fs->super->s_blocks_per_group); 1342} 1343 1344/* 1345 * Return the last block (inclusive) in a group 1346 */ 1347_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1348{ 1349 return (group == fs->group_desc_count - 1 ? 1350 fs->super->s_blocks_count - 1 : 1351 ext2fs_group_first_block(fs, group) + 1352 (fs->super->s_blocks_per_group - 1)); 1353} 1354 1355_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1356 struct ext2_inode *inode) 1357{ 1358 return inode->i_blocks - 1359 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1360} 1361 1362/* 1363 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1364 */ 1365_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1366{ 1367 if (!a) 1368 return 0; 1369 return ((a - 1) / b) + 1; 1370} 1371#undef _INLINE_ 1372#endif 1373 1374#ifdef __cplusplus 1375} 1376#endif 1377 1378#endif /* _EXT2FS_EXT2FS_H */ 1379