ext2fs.h revision 4718395120454ad7c193c76258ef5359f2ab3f2f
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 __u64 ext2_off64_t; 73typedef __s64 e2_blkcnt_t; 74typedef __u32 ext2_dirhash_t; 75 76#if EXT2_FLAT_INCLUDES 77#include "com_err.h" 78#include "ext2_io.h" 79#include "ext2_err.h" 80#include "ext2_ext_attr.h" 81#else 82#include <et/com_err.h> 83#include <ext2fs/ext2_io.h> 84#include <ext2fs/ext2_err.h> 85#include <ext2fs/ext2_ext_attr.h> 86#endif 87 88/* 89 * Portability help for Microsoft Visual C++ 90 */ 91#ifdef _MSC_VER 92#define EXT2_QSORT_TYPE int __cdecl 93#else 94#define EXT2_QSORT_TYPE int 95#endif 96 97typedef struct struct_ext2_filsys *ext2_filsys; 98 99#define EXT2FS_MARK_ERROR 0 100#define EXT2FS_UNMARK_ERROR 1 101#define EXT2FS_TEST_ERROR 2 102 103typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 104typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 105typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 106 107#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 108 109 110/* 111 * Badblocks list definitions 112 */ 113 114typedef struct ext2_struct_u32_list *ext2_badblocks_list; 115typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 116 117typedef struct ext2_struct_u32_list *ext2_u32_list; 118typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 119 120/* old */ 121typedef struct ext2_struct_u32_list *badblocks_list; 122typedef struct ext2_struct_u32_iterate *badblocks_iterate; 123 124#define BADBLOCKS_FLAG_DIRTY 1 125 126/* 127 * ext2_dblist structure and abstractions (see dblist.c) 128 */ 129struct ext2_db_entry2 { 130 ext2_ino_t ino; 131 blk64_t blk; 132 e2_blkcnt_t blockcnt; 133}; 134 135/* Ye Olde 32-bit version */ 136struct ext2_db_entry { 137 ext2_ino_t ino; 138 blk_t blk; 139 int blockcnt; 140}; 141 142typedef struct ext2_struct_dblist *ext2_dblist; 143 144#define DBLIST_ABORT 1 145 146/* 147 * ext2_fileio definitions 148 */ 149 150#define EXT2_FILE_WRITE 0x0001 151#define EXT2_FILE_CREATE 0x0002 152 153#define EXT2_FILE_MASK 0x00FF 154 155#define EXT2_FILE_BUF_DIRTY 0x4000 156#define EXT2_FILE_BUF_VALID 0x2000 157 158typedef struct ext2_file *ext2_file_t; 159 160#define EXT2_SEEK_SET 0 161#define EXT2_SEEK_CUR 1 162#define EXT2_SEEK_END 2 163 164/* 165 * Flags for the ext2_filsys structure and for ext2fs_open() 166 */ 167#define EXT2_FLAG_RW 0x01 168#define EXT2_FLAG_CHANGED 0x02 169#define EXT2_FLAG_DIRTY 0x04 170#define EXT2_FLAG_VALID 0x08 171#define EXT2_FLAG_IB_DIRTY 0x10 172#define EXT2_FLAG_BB_DIRTY 0x20 173#define EXT2_FLAG_SWAP_BYTES 0x40 174#define EXT2_FLAG_SWAP_BYTES_READ 0x80 175#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 176#define EXT2_FLAG_MASTER_SB_ONLY 0x200 177#define EXT2_FLAG_FORCE 0x400 178#define EXT2_FLAG_SUPER_ONLY 0x800 179#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 180#define EXT2_FLAG_IMAGE_FILE 0x2000 181#define EXT2_FLAG_EXCLUSIVE 0x4000 182#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 183#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 184#define EXT2_FLAG_64BITS 0x20000 185#define EXT2_FLAG_PRINT_PROGRESS 0x40000 186#define EXT2_FLAG_DIRECT_IO 0x80000 187#define EXT2_FLAG_SKIP_MMP 0x100000 188 189/* 190 * Special flag in the ext2 inode i_flag field that means that this is 191 * a new inode. (So that ext2_write_inode() can clear extra fields.) 192 */ 193#define EXT2_NEW_INODE_FL 0x80000000 194 195/* 196 * Flags for mkjournal 197 */ 198#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 199#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 200#define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */ 201 202struct opaque_ext2_group_desc; 203 204struct struct_ext2_filsys { 205 errcode_t magic; 206 io_channel io; 207 int flags; 208 char * device_name; 209 struct ext2_super_block * super; 210 unsigned int blocksize; 211 int fragsize; 212 dgrp_t group_desc_count; 213 unsigned long desc_blocks; 214 struct opaque_ext2_group_desc * group_desc; 215 unsigned int inode_blocks_per_group; 216 ext2fs_inode_bitmap inode_map; 217 ext2fs_block_bitmap block_map; 218 /* XXX FIXME-64: not 64-bit safe, but not used? */ 219 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 220 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 221 errcode_t (*write_bitmaps)(ext2_filsys fs); 222 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 223 struct ext2_inode *inode); 224 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 225 struct ext2_inode *inode); 226 ext2_badblocks_list badblocks; 227 ext2_dblist dblist; 228 __u32 stride; /* for mke2fs */ 229 struct ext2_super_block * orig_super; 230 struct ext2_image_hdr * image_header; 231 __u32 umask; 232 time_t now; 233 int cluster_ratio_bits; 234 __u16 default_bitmap_type; 235 __u16 pad; 236 /* 237 * Reserved for future expansion 238 */ 239 __u32 reserved[5]; 240 241 /* 242 * Reserved for the use of the calling application. 243 */ 244 void * priv_data; 245 246 /* 247 * Inode cache 248 */ 249 struct ext2_inode_cache *icache; 250 io_channel image_io; 251 252 /* 253 * More callback functions 254 */ 255 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 256 blk64_t *ret); 257 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 258 259 /* 260 * Buffers for Multiple mount protection(MMP) block. 261 */ 262 void *mmp_buf; 263 void *mmp_cmp; 264 int mmp_fd; 265 266 /* 267 * Time at which e2fsck last updated the MMP block. 268 */ 269 long mmp_last_written; 270}; 271 272#if EXT2_FLAT_INCLUDES 273#include "e2_bitops.h" 274#else 275#include <ext2fs/bitops.h> 276#endif 277 278/* 279 * 64-bit bitmap backend types 280 */ 281#define EXT2FS_BMAP64_BITARRAY 1 282#define EXT2FS_BMAP64_RBTREE 2 283#define EXT2FS_BMAP64_AUTODIR 3 284 285/* 286 * Return flags for the block iterator functions 287 */ 288#define BLOCK_CHANGED 1 289#define BLOCK_ABORT 2 290#define BLOCK_ERROR 4 291 292/* 293 * Block interate flags 294 * 295 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 296 * function should be called on blocks where the block number is zero. 297 * This is used by ext2fs_expand_dir() to be able to add a new block 298 * to an inode. It can also be used for programs that want to be able 299 * to deal with files that contain "holes". 300 * 301 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 302 * the indirect, doubly indirect, etc. blocks should be called after 303 * all of the blocks containined in the indirect blocks are processed. 304 * This is useful if you are going to be deallocating blocks from an 305 * inode. 306 * 307 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 308 * called for data blocks only. 309 * 310 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 311 * modify returned block number. 312 * 313 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 314 * ext2fs_block_iterate2 that large files won't be accepted. 315 */ 316#define BLOCK_FLAG_APPEND 1 317#define BLOCK_FLAG_HOLE 1 318#define BLOCK_FLAG_DEPTH_TRAVERSE 2 319#define BLOCK_FLAG_DATA_ONLY 4 320#define BLOCK_FLAG_READ_ONLY 8 321 322#define BLOCK_FLAG_NO_LARGE 0x1000 323 324/* 325 * Magic "block count" return values for the block iterator function. 326 */ 327#define BLOCK_COUNT_IND (-1) 328#define BLOCK_COUNT_DIND (-2) 329#define BLOCK_COUNT_TIND (-3) 330#define BLOCK_COUNT_TRANSLATOR (-4) 331 332#if 0 333/* 334 * Flags for ext2fs_move_blocks 335 */ 336#define EXT2_BMOVE_GET_DBLIST 0x0001 337#define EXT2_BMOVE_DEBUG 0x0002 338#endif 339 340/* 341 * Generic (non-filesystem layout specific) extents structure 342 */ 343 344#define EXT2_EXTENT_FLAGS_LEAF 0x0001 345#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 346#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 347 348struct ext2fs_extent { 349 blk64_t e_pblk; /* first physical block */ 350 blk64_t e_lblk; /* first logical block extent covers */ 351 __u32 e_len; /* number of blocks covered by extent */ 352 __u32 e_flags; /* extent flags */ 353}; 354 355typedef struct ext2_extent_handle *ext2_extent_handle_t; 356typedef struct ext2_extent_path *ext2_extent_path_t; 357 358/* 359 * Flags used by ext2fs_extent_get() 360 */ 361#define EXT2_EXTENT_CURRENT 0x0000 362#define EXT2_EXTENT_MOVE_MASK 0x000F 363#define EXT2_EXTENT_ROOT 0x0001 364#define EXT2_EXTENT_LAST_LEAF 0x0002 365#define EXT2_EXTENT_FIRST_SIB 0x0003 366#define EXT2_EXTENT_LAST_SIB 0x0004 367#define EXT2_EXTENT_NEXT_SIB 0x0005 368#define EXT2_EXTENT_PREV_SIB 0x0006 369#define EXT2_EXTENT_NEXT_LEAF 0x0007 370#define EXT2_EXTENT_PREV_LEAF 0x0008 371#define EXT2_EXTENT_NEXT 0x0009 372#define EXT2_EXTENT_PREV 0x000A 373#define EXT2_EXTENT_UP 0x000B 374#define EXT2_EXTENT_DOWN 0x000C 375#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 376 377/* 378 * Flags used by ext2fs_extent_insert() 379 */ 380#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 381#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 382 383/* 384 * Flags used by ext2fs_extent_delete() 385 */ 386#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 387 388/* 389 * Flags used by ext2fs_extent_set_bmap() 390 */ 391#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 392 393/* 394 * Data structure returned by ext2fs_extent_get_info() 395 */ 396struct ext2_extent_info { 397 int curr_entry; 398 int curr_level; 399 int num_entries; 400 int max_entries; 401 int max_depth; 402 int bytes_avail; 403 blk64_t max_lblk; 404 blk64_t max_pblk; 405 __u32 max_len; 406 __u32 max_uninit_len; 407}; 408 409/* 410 * Flags for directory block reading and writing functions 411 */ 412#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 413 414/* 415 * Return flags for the directory iterator functions 416 */ 417#define DIRENT_CHANGED 1 418#define DIRENT_ABORT 2 419#define DIRENT_ERROR 3 420 421/* 422 * Directory iterator flags 423 */ 424 425#define DIRENT_FLAG_INCLUDE_EMPTY 1 426#define DIRENT_FLAG_INCLUDE_REMOVED 2 427 428#define DIRENT_DOT_FILE 1 429#define DIRENT_DOT_DOT_FILE 2 430#define DIRENT_OTHER_FILE 3 431#define DIRENT_DELETED_FILE 4 432 433/* 434 * Inode scan definitions 435 */ 436typedef struct ext2_struct_inode_scan *ext2_inode_scan; 437 438/* 439 * ext2fs_scan flags 440 */ 441#define EXT2_SF_CHK_BADBLOCKS 0x0001 442#define EXT2_SF_BAD_INODE_BLK 0x0002 443#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 444#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 445#define EXT2_SF_DO_LAZY 0x0010 446 447/* 448 * ext2fs_check_if_mounted flags 449 */ 450#define EXT2_MF_MOUNTED 1 451#define EXT2_MF_ISROOT 2 452#define EXT2_MF_READONLY 4 453#define EXT2_MF_SWAP 8 454#define EXT2_MF_BUSY 16 455 456/* 457 * Ext2/linux mode flags. We define them here so that we don't need 458 * to depend on the OS's sys/stat.h, since we may be compiling on a 459 * non-Linux system. 460 */ 461#define LINUX_S_IFMT 00170000 462#define LINUX_S_IFSOCK 0140000 463#define LINUX_S_IFLNK 0120000 464#define LINUX_S_IFREG 0100000 465#define LINUX_S_IFBLK 0060000 466#define LINUX_S_IFDIR 0040000 467#define LINUX_S_IFCHR 0020000 468#define LINUX_S_IFIFO 0010000 469#define LINUX_S_ISUID 0004000 470#define LINUX_S_ISGID 0002000 471#define LINUX_S_ISVTX 0001000 472 473#define LINUX_S_IRWXU 00700 474#define LINUX_S_IRUSR 00400 475#define LINUX_S_IWUSR 00200 476#define LINUX_S_IXUSR 00100 477 478#define LINUX_S_IRWXG 00070 479#define LINUX_S_IRGRP 00040 480#define LINUX_S_IWGRP 00020 481#define LINUX_S_IXGRP 00010 482 483#define LINUX_S_IRWXO 00007 484#define LINUX_S_IROTH 00004 485#define LINUX_S_IWOTH 00002 486#define LINUX_S_IXOTH 00001 487 488#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 489#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 490#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 491#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 492#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 493#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 494#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 495 496/* 497 * ext2 size of an inode 498 */ 499#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 500 501/* 502 * ext2_icount_t abstraction 503 */ 504#define EXT2_ICOUNT_OPT_INCREMENT 0x01 505 506typedef struct ext2_icount *ext2_icount_t; 507 508/* 509 * Flags for ext2fs_bmap 510 */ 511#define BMAP_ALLOC 0x0001 512#define BMAP_SET 0x0002 513 514/* 515 * Returned flags from ext2fs_bmap 516 */ 517#define BMAP_RET_UNINIT 0x0001 518 519/* 520 * Flags for imager.c functions 521 */ 522#define IMAGER_FLAG_INODEMAP 1 523#define IMAGER_FLAG_SPARSEWRITE 2 524 525/* 526 * For checking structure magic numbers... 527 */ 528 529#define EXT2_CHECK_MAGIC(struct, code) \ 530 if ((struct)->magic != (code)) return (code) 531 532 533/* 534 * For ext2 compression support 535 */ 536#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 537#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 538 539/* 540 * Features supported by this version of the library 541 */ 542#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 543 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 544 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 545 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 546 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 547 EXT2_FEATURE_COMPAT_EXT_ATTR) 548 549/* This #ifdef is temporary until compression is fully supported */ 550#ifdef ENABLE_COMPRESSION 551#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 552/* If the below warning bugs you, then have 553 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 554 environment at configure time. */ 555 #warning "Compression support is experimental" 556#endif 557#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 558 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 559 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 560 EXT2_FEATURE_INCOMPAT_META_BG|\ 561 EXT3_FEATURE_INCOMPAT_RECOVER|\ 562 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 563 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 564 EXT4_FEATURE_INCOMPAT_MMP|\ 565 EXT4_FEATURE_INCOMPAT_64BIT) 566#else 567#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 568 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 569 EXT2_FEATURE_INCOMPAT_META_BG|\ 570 EXT3_FEATURE_INCOMPAT_RECOVER|\ 571 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 572 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 573 EXT4_FEATURE_INCOMPAT_MMP|\ 574 EXT4_FEATURE_INCOMPAT_64BIT) 575#endif 576#ifdef CONFIG_QUOTA 577#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 578 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 579 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 580 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 581 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 582 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 583 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 584 EXT4_FEATURE_RO_COMPAT_QUOTA) 585#else 586#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 587 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 588 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 589 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 590 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 591 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 592 EXT4_FEATURE_RO_COMPAT_BIGALLOC) 593#endif 594 595/* 596 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 597 * to ext2fs_openfs() 598 */ 599#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 600#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA) 601 602 603/* Translate a block number to a cluster number */ 604#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 605#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 606#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 607/* Translate a cluster number to a block number */ 608#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 609/* Translate # of blks to # of clusters */ 610#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 611 (fs)->cluster_ratio_bits) 612 613#if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 614typedef struct stat64 ext2fs_struct_stat; 615#else 616typedef struct stat ext2fs_struct_stat; 617#endif 618 619/* 620 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 621 * avoid the fsync call. 622 */ 623#define EXT2_FLAG_FLUSH_NO_SYNC 1 624 625/* 626 * function prototypes 627 */ 628 629/* alloc.c */ 630extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 631 ext2fs_inode_bitmap map, ext2_ino_t *ret); 632extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 633 ext2fs_block_bitmap map, blk_t *ret); 634extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 635 ext2fs_block_bitmap map, blk64_t *ret); 636extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 637 blk_t finish, int num, 638 ext2fs_block_bitmap map, 639 blk_t *ret); 640extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 641 blk64_t finish, int num, 642 ext2fs_block_bitmap map, 643 blk64_t *ret); 644extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 645 char *block_buf, blk_t *ret); 646extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 647 char *block_buf, blk64_t *ret); 648extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 649 errcode_t (*func)(ext2_filsys fs, 650 blk64_t goal, 651 blk64_t *ret), 652 errcode_t (**old)(ext2_filsys fs, 653 blk64_t goal, 654 blk64_t *ret)); 655 656/* alloc_sb.c */ 657extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 658 dgrp_t group, 659 ext2fs_block_bitmap bmap); 660extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 661 void (*func)(ext2_filsys fs, 662 blk64_t blk, 663 int inuse), 664 void (**old)(ext2_filsys fs, 665 blk64_t blk, 666 int inuse)); 667 668/* alloc_stats.c */ 669void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 670void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 671 int inuse, int isdir); 672void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 673void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 674 675/* alloc_tables.c */ 676extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 677extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 678 ext2fs_block_bitmap bmap); 679 680/* badblocks.c */ 681extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 682extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 683extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 684extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 685extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 686 ext2_u32_iterate *ret); 687extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 688extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 689extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 690extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 691 692extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 693 int size); 694extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 695 blk_t blk); 696extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 697 blk_t blk); 698extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 699extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 700extern errcode_t 701 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 702 ext2_badblocks_iterate *ret); 703extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 704 blk_t *blk); 705extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 706extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 707 ext2_badblocks_list *dest); 708extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 709 ext2_badblocks_list bb2); 710extern int ext2fs_u32_list_count(ext2_u32_list bb); 711 712/* bb_compat */ 713extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 714extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 715extern int badblocks_list_test(badblocks_list bb, blk_t blk); 716extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 717 badblocks_iterate *ret); 718extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 719extern void badblocks_list_iterate_end(badblocks_iterate iter); 720extern void badblocks_list_free(badblocks_list bb); 721 722/* bb_inode.c */ 723extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 724 ext2_badblocks_list bb_list); 725 726/* bitmaps.c */ 727extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 728extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 729extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 730 ext2fs_generic_bitmap *dest); 731extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 732extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 733extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 734extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 735extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 736 const char *descr, 737 ext2fs_block_bitmap *ret); 738extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 739 const char *descr, 740 ext2fs_block_bitmap *ret); 741extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 742extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 743 const char *descr, 744 ext2fs_inode_bitmap *ret); 745extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 746 ext2_ino_t end, ext2_ino_t *oend); 747extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 748 blk_t end, blk_t *oend); 749extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 750 blk64_t end, blk64_t *oend); 751extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 752extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 753extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 754extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 755extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 756 ext2fs_inode_bitmap bmap); 757extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 758 __u64 new_real_end, 759 ext2fs_inode_bitmap bmap); 760extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 761 ext2fs_block_bitmap bmap); 762extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 763 __u64 new_real_end, 764 ext2fs_block_bitmap bmap); 765extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 766 ext2fs_block_bitmap bm2); 767extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 768 ext2fs_inode_bitmap bm2); 769extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 770 ext2_ino_t start, unsigned int num, 771 void *in); 772extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 773 __u64 start, size_t num, 774 void *in); 775extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 776 ext2_ino_t start, unsigned int num, 777 void *out); 778extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 779 __u64 start, size_t num, 780 void *out); 781extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 782 blk_t start, unsigned int num, 783 void *in); 784extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 785 blk64_t start, size_t num, 786 void *in); 787extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 788 blk_t start, unsigned int num, 789 void *out); 790extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 791 blk64_t start, size_t num, 792 void *out); 793 794/* blknum.c */ 795extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 796extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 797extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 798extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 799extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 800 struct ext2_inode *inode); 801extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 802 struct ext2_inode *inode); 803extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 804extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 805 blk64_t blk); 806extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 807 blk64_t blk); 808extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 809extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 810 blk64_t blk); 811extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 812 blk64_t blk); 813extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 814extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 815 blk64_t blk); 816extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 817 blk64_t blk); 818/* Block group descriptor accessor functions */ 819extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 820 struct opaque_ext2_group_desc *gdp, 821 dgrp_t group); 822extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 823extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 824 blk64_t blk); 825extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 826extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 827 blk64_t blk); 828extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 829extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 830 blk64_t blk); 831extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 832extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 833 __u32 n); 834extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 835extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 836 __u32 n); 837extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 838extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 839 __u32 n); 840extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 841extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 842 __u32 n); 843extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 844extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 845extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 846extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 847extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 848extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 849extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 850extern blk64_t ext2fs_file_acl_block(ext2_filsys fs, 851 const struct ext2_inode *inode); 852extern void ext2fs_file_acl_block_set(ext2_filsys fs, 853 struct ext2_inode *inode, blk64_t blk); 854 855/* block.c */ 856extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 857 ext2_ino_t ino, 858 int flags, 859 char *block_buf, 860 int (*func)(ext2_filsys fs, 861 blk_t *blocknr, 862 int blockcnt, 863 void *priv_data), 864 void *priv_data); 865errcode_t ext2fs_block_iterate2(ext2_filsys fs, 866 ext2_ino_t ino, 867 int flags, 868 char *block_buf, 869 int (*func)(ext2_filsys fs, 870 blk_t *blocknr, 871 e2_blkcnt_t blockcnt, 872 blk_t ref_blk, 873 int ref_offset, 874 void *priv_data), 875 void *priv_data); 876errcode_t ext2fs_block_iterate3(ext2_filsys fs, 877 ext2_ino_t ino, 878 int flags, 879 char *block_buf, 880 int (*func)(ext2_filsys fs, 881 blk64_t *blocknr, 882 e2_blkcnt_t blockcnt, 883 blk64_t ref_blk, 884 int ref_offset, 885 void *priv_data), 886 void *priv_data); 887 888/* bmap.c */ 889extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 890 struct ext2_inode *inode, 891 char *block_buf, int bmap_flags, 892 blk_t block, blk_t *phys_blk); 893extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 894 struct ext2_inode *inode, 895 char *block_buf, int bmap_flags, blk64_t block, 896 int *ret_flags, blk64_t *phys_blk); 897 898#if 0 899/* bmove.c */ 900extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 901 ext2fs_block_bitmap reserve, 902 ext2fs_block_bitmap alloc_map, 903 int flags); 904#endif 905 906/* check_desc.c */ 907extern errcode_t ext2fs_check_desc(ext2_filsys fs); 908 909/* closefs.c */ 910extern errcode_t ext2fs_close(ext2_filsys fs); 911extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 912extern errcode_t ext2fs_flush(ext2_filsys fs); 913extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 914extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block); 915extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 916 dgrp_t group, 917 blk64_t *ret_super_blk, 918 blk64_t *ret_old_desc_blk, 919 blk64_t *ret_new_desc_blk, 920 blk_t *ret_used_blks); 921extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 922 dgrp_t group, 923 blk_t *ret_super_blk, 924 blk_t *ret_old_desc_blk, 925 blk_t *ret_new_desc_blk, 926 int *ret_meta_bg); 927extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 928 929/* crc32c.c */ 930extern __u32 ext2fs_crc32c_be(__u32 crc, unsigned char const *p, size_t len); 931extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 932 933/* csum.c */ 934extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 935extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 936extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 937extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group); 938 939/* dblist.c */ 940 941extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 942extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 943extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 944 blk_t blk, int blockcnt); 945extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 946 blk64_t blk, e2_blkcnt_t blockcnt); 947extern void ext2fs_dblist_sort(ext2_dblist dblist, 948 EXT2_QSORT_TYPE (*sortfunc)(const void *, 949 const void *)); 950extern void ext2fs_dblist_sort2(ext2_dblist dblist, 951 EXT2_QSORT_TYPE (*sortfunc)(const void *, 952 const void *)); 953extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 954 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 955 void *priv_data), 956 void *priv_data); 957extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 958 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 959 void *priv_data), 960 void *priv_data); 961extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 962 blk_t blk, int blockcnt); 963extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 964 blk64_t blk, e2_blkcnt_t blockcnt); 965extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 966 ext2_dblist *dest); 967extern int ext2fs_dblist_count(ext2_dblist dblist); 968extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 969extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 970 struct ext2_db_entry **entry); 971extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 972 struct ext2_db_entry2 **entry); 973extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 974 975/* dblist_dir.c */ 976extern errcode_t 977 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 978 int flags, 979 char *block_buf, 980 int (*func)(ext2_ino_t dir, 981 int entry, 982 struct ext2_dir_entry *dirent, 983 int offset, 984 int blocksize, 985 char *buf, 986 void *priv_data), 987 void *priv_data); 988 989/* dirblock.c */ 990extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 991 void *buf); 992extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 993 void *buf, int flags); 994extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 995 void *buf, int flags); 996extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 997 void *buf); 998extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 999 void *buf, int flags); 1000extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 1001 void *buf, int flags); 1002 1003/* dirhash.c */ 1004extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 1005 const __u32 *seed, 1006 ext2_dirhash_t *ret_hash, 1007 ext2_dirhash_t *ret_minor_hash); 1008 1009 1010/* dir_iterate.c */ 1011extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1012 struct ext2_dir_entry *dirent, 1013 unsigned int *rec_len); 1014extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1015 unsigned int len, 1016 struct ext2_dir_entry *dirent); 1017extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1018 ext2_ino_t dir, 1019 int flags, 1020 char *block_buf, 1021 int (*func)(struct ext2_dir_entry *dirent, 1022 int offset, 1023 int blocksize, 1024 char *buf, 1025 void *priv_data), 1026 void *priv_data); 1027extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1028 ext2_ino_t dir, 1029 int flags, 1030 char *block_buf, 1031 int (*func)(ext2_ino_t dir, 1032 int entry, 1033 struct ext2_dir_entry *dirent, 1034 int offset, 1035 int blocksize, 1036 char *buf, 1037 void *priv_data), 1038 void *priv_data); 1039 1040/* dupfs.c */ 1041extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1042 1043/* expanddir.c */ 1044extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1045 1046/* ext_attr.c */ 1047extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1048 void *data); 1049extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1050extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1051 void *buf); 1052extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1053 void *buf); 1054extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1055 void *buf); 1056extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1057 char *block_buf, 1058 int adjust, __u32 *newcount); 1059extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1060 char *block_buf, 1061 int adjust, __u32 *newcount); 1062 1063/* extent.c */ 1064extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1065extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1066 ext2_extent_handle_t *handle); 1067extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1068 struct ext2_inode *inode, 1069 ext2_extent_handle_t *ret_handle); 1070extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1071extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1072 int flags, struct ext2fs_extent *extent); 1073extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle); 1074extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1075 struct ext2fs_extent *extent); 1076extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1077 struct ext2fs_extent *extent); 1078extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1079 blk64_t logical, blk64_t physical, 1080 int flags); 1081extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1082extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1083 struct ext2_extent_info *info); 1084extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1085 blk64_t blk); 1086extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle, 1087 int leaf_level, blk64_t blk); 1088extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle); 1089 1090/* fileio.c */ 1091extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1092 struct ext2_inode *inode, 1093 int flags, ext2_file_t *ret); 1094extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1095 int flags, ext2_file_t *ret); 1096extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1097struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1098extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file); 1099extern errcode_t ext2fs_file_close(ext2_file_t file); 1100extern errcode_t ext2fs_file_flush(ext2_file_t file); 1101extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1102 unsigned int wanted, unsigned int *got); 1103extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1104 unsigned int nbytes, unsigned int *written); 1105extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1106 int whence, __u64 *ret_pos); 1107extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1108 int whence, ext2_off_t *ret_pos); 1109errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1110extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1111extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1112extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1113 1114/* finddev.c */ 1115extern char *ext2fs_find_block_device(dev_t device); 1116 1117/* flushb.c */ 1118extern errcode_t ext2fs_sync_device(int fd, int flushb); 1119 1120/* freefs.c */ 1121extern void ext2fs_free(ext2_filsys fs); 1122extern void ext2fs_free_dblist(ext2_dblist dblist); 1123extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1124extern void ext2fs_u32_list_free(ext2_u32_list bb); 1125 1126/* gen_bitmap.c */ 1127extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1128extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1129 __u32 start, __u32 end, 1130 __u32 real_end, 1131 const char *descr, char *init_map, 1132 ext2fs_generic_bitmap *ret); 1133extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1134 __u32 end, 1135 __u32 real_end, 1136 const char *descr, 1137 ext2fs_generic_bitmap *ret); 1138extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1139 ext2fs_generic_bitmap *dest); 1140extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1141extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1142 errcode_t magic, 1143 errcode_t neq, 1144 ext2_ino_t end, 1145 ext2_ino_t *oend); 1146extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1147extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1148 __u32 new_end, 1149 __u32 new_real_end, 1150 ext2fs_generic_bitmap bmap); 1151extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1152 ext2fs_generic_bitmap bm1, 1153 ext2fs_generic_bitmap bm2); 1154extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1155 errcode_t magic, 1156 __u32 start, __u32 num, 1157 void *out); 1158extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1159 errcode_t magic, 1160 __u32 start, __u32 num, 1161 void *in); 1162extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap, 1163 __u32 start, __u32 end, 1164 __u32 *out); 1165 1166/* gen_bitmap64.c */ 1167 1168/* Generate and print bitmap usage statistics */ 1169#define BMAP_STATS 1170 1171void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1172errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1173 int type, __u64 start, __u64 end, 1174 __u64 real_end, 1175 const char *descr, 1176 ext2fs_generic_bitmap *ret); 1177errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1178 ext2fs_generic_bitmap *dest); 1179void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1180errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1181 errcode_t neq, 1182 __u64 end, __u64 *oend); 1183void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1184errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1185 __u64 new_end, 1186 __u64 new_real_end); 1187errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1188 ext2fs_generic_bitmap bm1, 1189 ext2fs_generic_bitmap bm2); 1190errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1191 __u64 start, unsigned int num, 1192 void *out); 1193errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1194 __u64 start, unsigned int num, 1195 void *in); 1196errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1197 ext2fs_block_bitmap *bitmap); 1198 1199/* getsize.c */ 1200extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1201 blk_t *retblocks); 1202extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1203 blk64_t *retblocks); 1204 1205/* getsectsize.c */ 1206extern int ext2fs_get_dio_alignment(int fd); 1207errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1208errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1209 1210/* i_block.c */ 1211errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1212 blk64_t num_blocks); 1213errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1214 blk64_t num_blocks); 1215errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1216 1217/* imager.c */ 1218extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1219extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1220extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1221extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1222extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1223extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1224 1225/* ind_block.c */ 1226errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1227errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1228 1229/* initialize.c */ 1230extern errcode_t ext2fs_initialize(const char *name, int flags, 1231 struct ext2_super_block *param, 1232 io_manager manager, ext2_filsys *ret_fs); 1233 1234/* icount.c */ 1235extern void ext2fs_free_icount(ext2_icount_t icount); 1236extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1237 int flags, ext2_icount_t *ret); 1238extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1239 unsigned int size, 1240 ext2_icount_t hint, ext2_icount_t *ret); 1241extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1242 unsigned int size, 1243 ext2_icount_t *ret); 1244extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1245 __u16 *ret); 1246extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1247 __u16 *ret); 1248extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1249 __u16 *ret); 1250extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1251 __u16 count); 1252extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1253errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1254 1255/* inline.c */ 1256 1257extern errcode_t ext2fs_get_memalign(unsigned long size, 1258 unsigned long align, void *ptr); 1259 1260/* inode.c */ 1261extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1262extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1263 ext2_ino_t *ino, 1264 struct ext2_inode *inode, 1265 int bufsize); 1266extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1267 ext2_inode_scan *ret_scan); 1268extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1269extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1270 struct ext2_inode *inode); 1271extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1272 int group); 1273extern void ext2fs_set_inode_callback 1274 (ext2_inode_scan scan, 1275 errcode_t (*done_group)(ext2_filsys fs, 1276 ext2_inode_scan scan, 1277 dgrp_t group, 1278 void * priv_data), 1279 void *done_group_data); 1280extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1281 int clear_flags); 1282extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1283 struct ext2_inode * inode, 1284 int bufsize); 1285extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1286 struct ext2_inode * inode); 1287extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1288 struct ext2_inode * inode, 1289 int bufsize); 1290extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1291 struct ext2_inode * inode); 1292extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1293 struct ext2_inode * inode); 1294extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1295extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1296 1297/* inode_io.c */ 1298extern io_manager inode_io_manager; 1299extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1300 char **name); 1301extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1302 struct ext2_inode *inode, 1303 char **name); 1304 1305/* ismounted.c */ 1306extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1307extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1308 char *mtpt, int mtlen); 1309 1310/* punch.c */ 1311extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1312 struct ext2_inode *inode, 1313 char *block_buf, blk64_t start, 1314 blk64_t end); 1315 1316/* namei.c */ 1317extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1318 int namelen, char *buf, ext2_ino_t *inode); 1319extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1320 const char *name, ext2_ino_t *inode); 1321errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1322 const char *name, ext2_ino_t *inode); 1323extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1324 ext2_ino_t inode, ext2_ino_t *res_inode); 1325 1326/* native.c */ 1327int ext2fs_native_flag(void); 1328 1329/* newdir.c */ 1330extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1331 ext2_ino_t parent_ino, char **block); 1332 1333/* mkdir.c */ 1334extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1335 const char *name); 1336 1337/* mkjournal.c */ 1338extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1339 blk_t *ret_blk, int *ret_count); 1340extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1341 blk64_t *ret_blk, int *ret_count); 1342extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1343 __u32 num_blocks, int flags, 1344 char **ret_jsb); 1345extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1346 ext2_filsys journal_dev); 1347extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1348 int flags); 1349extern int ext2fs_default_journal_size(__u64 num_blocks); 1350 1351/* openfs.c */ 1352extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1353 unsigned int block_size, io_manager manager, 1354 ext2_filsys *ret_fs); 1355extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1356 int flags, int superblock, 1357 unsigned int block_size, io_manager manager, 1358 ext2_filsys *ret_fs); 1359extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1360 blk64_t group_block, dgrp_t i); 1361extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1362 dgrp_t i); 1363errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1364errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1365errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1366 1367/* get_pathname.c */ 1368extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1369 char **name); 1370 1371/* link.c */ 1372errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1373 ext2_ino_t ino, int flags); 1374errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1375 ext2_ino_t ino, int flags); 1376 1377/* symlink.c */ 1378errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino, 1379 const char *name, char *target); 1380 1381/* mmp.c */ 1382errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1383errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1384errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1385errcode_t ext2fs_mmp_init(ext2_filsys fs); 1386errcode_t ext2fs_mmp_start(ext2_filsys fs); 1387errcode_t ext2fs_mmp_update(ext2_filsys fs); 1388errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1389unsigned ext2fs_mmp_new_seq(void); 1390 1391/* read_bb.c */ 1392extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1393 ext2_badblocks_list *bb_list); 1394 1395/* read_bb_file.c */ 1396extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1397 ext2_badblocks_list *bb_list, 1398 void *priv_data, 1399 void (*invalid)(ext2_filsys fs, 1400 blk_t blk, 1401 char *badstr, 1402 void *priv_data)); 1403extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1404 ext2_badblocks_list *bb_list, 1405 void (*invalid)(ext2_filsys fs, 1406 blk_t blk)); 1407 1408/* res_gdt.c */ 1409extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1410 1411/* swapfs.c */ 1412extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1413 int has_header); 1414extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1415 struct ext2_ext_attr_header *from_hdr); 1416extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1417 struct ext2_ext_attr_entry *from_entry); 1418extern void ext2fs_swap_super(struct ext2_super_block * super); 1419extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1420extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1421extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1422 struct ext2_inode_large *f, int hostorder, 1423 int bufsize); 1424extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1425 struct ext2_inode *f, int hostorder); 1426extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1427 1428/* unix_io.c */ 1429extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode); 1430extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1431extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1432 1433/* valid_blk.c */ 1434extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1435extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, 1436 struct ext2_inode *inode); 1437 1438/* version.c */ 1439extern int ext2fs_parse_version_string(const char *ver_string); 1440extern int ext2fs_get_library_version(const char **ver_string, 1441 const char **date_string); 1442 1443/* write_bb_file.c */ 1444extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1445 unsigned int flags, 1446 FILE *f); 1447 1448 1449/* inline functions */ 1450#ifdef NO_INLINE_FUNCS 1451extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1452extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1453extern errcode_t ext2fs_get_array(unsigned long count, 1454 unsigned long size, void *ptr); 1455extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1456 unsigned long size, void *ptr); 1457extern errcode_t ext2fs_free_mem(void *ptr); 1458extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1459 unsigned long size, void *ptr); 1460extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1461extern void ext2fs_mark_changed(ext2_filsys fs); 1462extern int ext2fs_test_changed(ext2_filsys fs); 1463extern void ext2fs_mark_valid(ext2_filsys fs); 1464extern void ext2fs_unmark_valid(ext2_filsys fs); 1465extern int ext2fs_test_valid(ext2_filsys fs); 1466extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1467extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1468extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1469extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1470extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1471extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1472extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1473extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1474extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1475 struct ext2_inode *inode); 1476extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1477extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1478#endif 1479 1480/* 1481 * The actual inlined functions definitions themselves... 1482 * 1483 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1484 * functions at all! 1485 */ 1486#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1487#ifdef INCLUDE_INLINE_FUNCS 1488#define _INLINE_ extern 1489#else 1490#if (__STDC_VERSION__ >= 199901L) 1491#define _INLINE_ inline 1492#else 1493#ifdef __GNUC__ 1494#define _INLINE_ extern __inline__ 1495#else /* For Watcom C */ 1496#define _INLINE_ extern inline 1497#endif /* __GNUC__ */ 1498#endif /* __STDC_VERSION__ >= 199901L */ 1499#endif 1500 1501#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1502#include <string.h> 1503/* 1504 * Allocate memory 1505 */ 1506_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1507{ 1508 void *pp; 1509 1510 pp = malloc(size); 1511 if (!pp) 1512 return EXT2_ET_NO_MEMORY; 1513 memcpy(ptr, &pp, sizeof (pp)); 1514 return 0; 1515} 1516 1517_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1518{ 1519 void *pp; 1520 1521 pp = malloc(size); 1522 if (!pp) 1523 return EXT2_ET_NO_MEMORY; 1524 memset(pp, 0, size); 1525 memcpy(ptr, &pp, sizeof(pp)); 1526 return 0; 1527} 1528 1529_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1530{ 1531 if (count && (-1UL)/count<size) 1532 return EXT2_ET_NO_MEMORY; 1533 return ext2fs_get_mem(count*size, ptr); 1534} 1535 1536_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1537 unsigned long size, void *ptr) 1538{ 1539 void *pp; 1540 1541 if (count && (-1UL)/count<size) 1542 return EXT2_ET_NO_MEMORY; 1543 pp = calloc(count, size); 1544 if (!pp) 1545 return EXT2_ET_NO_MEMORY; 1546 memcpy(ptr, &pp, sizeof(pp)); 1547 return 0; 1548} 1549 1550/* 1551 * Free memory 1552 */ 1553_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1554{ 1555 void *p; 1556 1557 memcpy(&p, ptr, sizeof(p)); 1558 free(p); 1559 p = 0; 1560 memcpy(ptr, &p, sizeof(p)); 1561 return 0; 1562} 1563 1564/* 1565 * Resize memory 1566 */ 1567_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1568 unsigned long size, void *ptr) 1569{ 1570 void *p; 1571 1572 /* Use "memcpy" for pointer assignments here to avoid problems 1573 * with C99 strict type aliasing rules. */ 1574 memcpy(&p, ptr, sizeof(p)); 1575 p = realloc(p, size); 1576 if (!p) 1577 return EXT2_ET_NO_MEMORY; 1578 memcpy(ptr, &p, sizeof(p)); 1579 return 0; 1580} 1581#endif /* Custom memory routines */ 1582 1583/* 1584 * Mark a filesystem superblock as dirty 1585 */ 1586_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1587{ 1588 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1589} 1590 1591/* 1592 * Mark a filesystem as changed 1593 */ 1594_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1595{ 1596 fs->flags |= EXT2_FLAG_CHANGED; 1597} 1598 1599/* 1600 * Check to see if a filesystem has changed 1601 */ 1602_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1603{ 1604 return (fs->flags & EXT2_FLAG_CHANGED); 1605} 1606 1607/* 1608 * Mark a filesystem as valid 1609 */ 1610_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1611{ 1612 fs->flags |= EXT2_FLAG_VALID; 1613} 1614 1615/* 1616 * Mark a filesystem as NOT valid 1617 */ 1618_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1619{ 1620 fs->flags &= ~EXT2_FLAG_VALID; 1621} 1622 1623/* 1624 * Check to see if a filesystem is valid 1625 */ 1626_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1627{ 1628 return (fs->flags & EXT2_FLAG_VALID); 1629} 1630 1631/* 1632 * Mark the inode bitmap as dirty 1633 */ 1634_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1635{ 1636 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1637} 1638 1639/* 1640 * Mark the block bitmap as dirty 1641 */ 1642_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1643{ 1644 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1645} 1646 1647/* 1648 * Check to see if a filesystem's inode bitmap is dirty 1649 */ 1650_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1651{ 1652 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1653} 1654 1655/* 1656 * Check to see if a filesystem's block bitmap is dirty 1657 */ 1658_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1659{ 1660 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1661} 1662 1663/* 1664 * Return the group # of a block 1665 */ 1666_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1667{ 1668 return ext2fs_group_of_blk2(fs, blk); 1669} 1670/* 1671 * Return the group # of an inode number 1672 */ 1673_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1674{ 1675 return (ino - 1) / fs->super->s_inodes_per_group; 1676} 1677 1678/* 1679 * Return the first block (inclusive) in a group 1680 */ 1681_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1682{ 1683 return ext2fs_group_first_block2(fs, group); 1684} 1685 1686/* 1687 * Return the last block (inclusive) in a group 1688 */ 1689_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1690{ 1691 return ext2fs_group_last_block2(fs, group); 1692} 1693 1694_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1695 struct ext2_inode *inode) 1696{ 1697 return ext2fs_inode_data_blocks2(fs, inode); 1698} 1699 1700/* 1701 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1702 */ 1703_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1704{ 1705 if (!a) 1706 return 0; 1707 return ((a - 1) / b) + 1; 1708} 1709 1710_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1711{ 1712 if (!a) 1713 return 0; 1714 return ((a - 1) / b) + 1; 1715} 1716 1717#undef _INLINE_ 1718#endif 1719 1720#ifdef __cplusplus 1721} 1722#endif 1723 1724#endif /* _EXT2FS_EXT2FS_H */ 1725