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 CONFIG_TDB 22 #define EXT2FS_NO_TDB_UNUSED 23 #else 24 #define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused)) 25 #endif 26 27 #ifdef __cplusplus 28 extern "C" { 29 #endif 30 31 /* 32 * Non-GNU C compilers won't necessarily understand inline 33 */ 34 #if (!defined(__GNUC__) && !defined(__WATCOMC__)) 35 #define NO_INLINE_FUNCS 36 #endif 37 38 /* 39 * Where the master copy of the superblock is located, and how big 40 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 41 * the size of the superblock structure is not necessarily trustworthy 42 * (some versions have the padding set up so that the superblock is 43 * 1032 bytes long). 44 */ 45 #define SUPERBLOCK_OFFSET 1024 46 #define SUPERBLOCK_SIZE 1024 47 48 #define UUID_STR_SIZE 37 49 50 /* 51 * The last ext2fs revision level that this version of the library is 52 * able to support. 53 */ 54 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 55 56 #ifdef HAVE_SYS_TYPES_H 57 #include <sys/types.h> 58 #endif 59 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <time.h> 64 #include <errno.h> 65 66 #if EXT2_FLAT_INCLUDES 67 #include "e2_types.h" 68 #include "ext2_fs.h" 69 #include "ext3_extents.h" 70 #else 71 #include <ext2fs/ext2_types.h> 72 #include <ext2fs/ext2_fs.h> 73 #include <ext2fs/ext3_extents.h> 74 #endif /* EXT2_FLAT_INCLUDES */ 75 76 typedef __u32 __bitwise ext2_ino_t; 77 typedef __u32 __bitwise blk_t; 78 typedef __u64 __bitwise blk64_t; 79 typedef __u32 __bitwise dgrp_t; 80 typedef __u32 __bitwise ext2_off_t; 81 typedef __u64 __bitwise ext2_off64_t; 82 typedef __s64 __bitwise e2_blkcnt_t; 83 typedef __u32 __bitwise ext2_dirhash_t; 84 85 #if EXT2_FLAT_INCLUDES 86 #include "com_err.h" 87 #include "ext2_io.h" 88 #include "ext2_err.h" 89 #include "ext2_ext_attr.h" 90 #else 91 #include <et/com_err.h> 92 #include <ext2fs/ext2_io.h> 93 #include <ext2fs/ext2_err.h> 94 #include <ext2fs/ext2_ext_attr.h> 95 #endif 96 97 #include "hashmap.h" 98 99 /* 100 * Portability help for Microsoft Visual C++ 101 */ 102 #ifdef _MSC_VER 103 #define EXT2_QSORT_TYPE int __cdecl 104 #else 105 #define EXT2_QSORT_TYPE int 106 #endif 107 108 typedef struct struct_ext2_filsys *ext2_filsys; 109 110 #define EXT2FS_MARK_ERROR 0 111 #define EXT2FS_UNMARK_ERROR 1 112 #define EXT2FS_TEST_ERROR 2 113 114 struct ext2fs_struct_generic_bitmap_base { 115 errcode_t magic; 116 ext2_filsys fs; 117 }; 118 119 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_generic_bitmap; 120 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_inode_bitmap; 121 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_block_bitmap; 122 123 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 124 125 126 /* 127 * Badblocks list definitions 128 */ 129 130 typedef struct ext2_struct_u32_list *ext2_badblocks_list; 131 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 132 133 typedef struct ext2_struct_u32_list *ext2_u32_list; 134 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 135 136 /* old */ 137 typedef struct ext2_struct_u32_list *badblocks_list; 138 typedef struct ext2_struct_u32_iterate *badblocks_iterate; 139 140 #define BADBLOCKS_FLAG_DIRTY 1 141 142 /* 143 * ext2_dblist structure and abstractions (see dblist.c) 144 */ 145 struct ext2_db_entry2 { 146 ext2_ino_t ino; 147 blk64_t blk; 148 e2_blkcnt_t blockcnt; 149 }; 150 151 /* Ye Olde 32-bit version */ 152 struct ext2_db_entry { 153 ext2_ino_t ino; 154 blk_t blk; 155 int blockcnt; 156 }; 157 158 typedef struct ext2_struct_dblist *ext2_dblist; 159 160 #define DBLIST_ABORT 1 161 162 /* 163 * ext2_fileio definitions 164 */ 165 166 #define EXT2_FILE_WRITE 0x0001 167 #define EXT2_FILE_CREATE 0x0002 168 169 #define EXT2_FILE_MASK 0x00FF 170 171 #define EXT2_FILE_BUF_DIRTY 0x4000 172 #define EXT2_FILE_BUF_VALID 0x2000 173 174 typedef struct ext2_file *ext2_file_t; 175 176 #define EXT2_SEEK_SET 0 177 #define EXT2_SEEK_CUR 1 178 #define EXT2_SEEK_END 2 179 180 /* 181 * Flags for the ext2_filsys structure and for ext2fs_open() 182 */ 183 #define EXT2_FLAG_RW 0x01 184 #define EXT2_FLAG_CHANGED 0x02 185 #define EXT2_FLAG_DIRTY 0x04 186 #define EXT2_FLAG_VALID 0x08 187 #define EXT2_FLAG_IB_DIRTY 0x10 188 #define EXT2_FLAG_BB_DIRTY 0x20 189 #define EXT2_FLAG_SWAP_BYTES 0x40 190 #define EXT2_FLAG_SWAP_BYTES_READ 0x80 191 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 192 #define EXT2_FLAG_MASTER_SB_ONLY 0x200 193 #define EXT2_FLAG_FORCE 0x400 194 #define EXT2_FLAG_SUPER_ONLY 0x800 195 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 196 #define EXT2_FLAG_IMAGE_FILE 0x2000 197 #define EXT2_FLAG_EXCLUSIVE 0x4000 198 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 199 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 200 #define EXT2_FLAG_64BITS 0x20000 201 #define EXT2_FLAG_PRINT_PROGRESS 0x40000 202 #define EXT2_FLAG_DIRECT_IO 0x80000 203 #define EXT2_FLAG_SKIP_MMP 0x100000 204 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000 205 #define EXT2_FLAG_SHARE_DUP 0x400000 206 #define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000 207 208 /* 209 * Special flag in the ext2 inode i_flag field that means that this is 210 * a new inode. (So that ext2_write_inode() can clear extra fields.) 211 */ 212 #define EXT2_NEW_INODE_FL 0x80000000 213 214 /* 215 * Flags for mkjournal 216 */ 217 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 218 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 219 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */ 220 221 struct blk_alloc_ctx; 222 struct opaque_ext2_group_desc; 223 224 struct struct_ext2_filsys { 225 errcode_t magic; 226 io_channel io; 227 int flags; 228 char * device_name; 229 struct ext2_super_block * super; 230 unsigned int blocksize; 231 int fragsize; 232 dgrp_t group_desc_count; 233 unsigned long desc_blocks; 234 struct opaque_ext2_group_desc * group_desc; 235 unsigned int inode_blocks_per_group; 236 ext2fs_inode_bitmap inode_map; 237 ext2fs_block_bitmap block_map; 238 /* XXX FIXME-64: not 64-bit safe, but not used? */ 239 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 240 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 241 errcode_t (*write_bitmaps)(ext2_filsys fs); 242 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 243 struct ext2_inode *inode); 244 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 245 struct ext2_inode *inode); 246 ext2_badblocks_list badblocks; 247 ext2_dblist dblist; 248 __u32 stride; /* for mke2fs */ 249 struct ext2_super_block * orig_super; 250 struct ext2_image_hdr * image_header; 251 __u32 umask; 252 time_t now; 253 int cluster_ratio_bits; 254 __u16 default_bitmap_type; 255 __u16 pad; 256 /* 257 * Reserved for future expansion 258 */ 259 __u32 reserved[5]; 260 261 /* 262 * Reserved for the use of the calling application. 263 */ 264 void * priv_data; 265 266 /* 267 * Inode cache 268 */ 269 struct ext2_inode_cache *icache; 270 io_channel image_io; 271 272 /* 273 * More callback functions 274 */ 275 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 276 blk64_t *ret); 277 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal, 278 blk64_t *ret, struct blk_alloc_ctx *ctx); 279 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 280 281 /* 282 * Buffers for Multiple mount protection(MMP) block. 283 */ 284 void *mmp_buf; 285 void *mmp_cmp; 286 int mmp_fd; 287 288 /* 289 * Time at which e2fsck last updated the MMP block. 290 */ 291 long mmp_last_written; 292 293 /* progress operation functions */ 294 struct ext2fs_progress_ops *progress_ops; 295 296 /* Precomputed FS UUID checksum for seeding other checksums */ 297 __u32 csum_seed; 298 299 io_channel journal_io; 300 char *journal_name; 301 302 /* New block range allocation hooks */ 303 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal, 304 blk64_t len, blk64_t *pblk, blk64_t *plen); 305 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num, 306 int inuse); 307 308 /* hashmap for SHA of data blocks */ 309 struct ext2fs_hashmap* block_sha_map; 310 }; 311 312 #if EXT2_FLAT_INCLUDES 313 #include "e2_bitops.h" 314 #else 315 #include <ext2fs/bitops.h> 316 #endif 317 318 /* 319 * 64-bit bitmap backend types 320 */ 321 #define EXT2FS_BMAP64_BITARRAY 1 322 #define EXT2FS_BMAP64_RBTREE 2 323 #define EXT2FS_BMAP64_AUTODIR 3 324 325 /* 326 * Return flags for the block iterator functions 327 */ 328 #define BLOCK_CHANGED 1 329 #define BLOCK_ABORT 2 330 #define BLOCK_ERROR 4 331 #define BLOCK_INLINE_DATA_CHANGED 8 332 333 /* 334 * Block interate flags 335 * 336 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 337 * function should be called on blocks where the block number is zero. 338 * This is used by ext2fs_expand_dir() to be able to add a new block 339 * to an inode. It can also be used for programs that want to be able 340 * to deal with files that contain "holes". 341 * 342 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 343 * the indirect, doubly indirect, etc. blocks should be called after 344 * all of the blocks contained in the indirect blocks are processed. 345 * This is useful if you are going to be deallocating blocks from an 346 * inode. 347 * 348 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 349 * called for data blocks only. 350 * 351 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 352 * modify returned block number. 353 * 354 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 355 * ext2fs_block_iterate2 that large files won't be accepted. 356 */ 357 #define BLOCK_FLAG_APPEND 1 358 #define BLOCK_FLAG_HOLE 1 359 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 360 #define BLOCK_FLAG_DATA_ONLY 4 361 #define BLOCK_FLAG_READ_ONLY 8 362 363 #define BLOCK_FLAG_NO_LARGE 0x1000 364 365 /* 366 * Magic "block count" return values for the block iterator function. 367 */ 368 #define BLOCK_COUNT_IND (-1) 369 #define BLOCK_COUNT_DIND (-2) 370 #define BLOCK_COUNT_TIND (-3) 371 #define BLOCK_COUNT_TRANSLATOR (-4) 372 373 #define BLOCK_ALLOC_UNKNOWN 0 374 #define BLOCK_ALLOC_DATA 1 375 #define BLOCK_ALLOC_METADATA 2 376 377 struct blk_alloc_ctx { 378 ext2_ino_t ino; 379 struct ext2_inode *inode; 380 blk64_t lblk; 381 int flags; 382 }; 383 384 #if 0 385 /* 386 * Flags for ext2fs_move_blocks 387 */ 388 #define EXT2_BMOVE_GET_DBLIST 0x0001 389 #define EXT2_BMOVE_DEBUG 0x0002 390 #endif 391 392 /* 393 * Generic (non-filesystem layout specific) extents structure 394 */ 395 396 #define EXT2_EXTENT_FLAGS_LEAF 0x0001 397 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002 398 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 399 400 struct ext2fs_extent { 401 blk64_t e_pblk; /* first physical block */ 402 blk64_t e_lblk; /* first logical block extent covers */ 403 __u32 e_len; /* number of blocks covered by extent */ 404 __u32 e_flags; /* extent flags */ 405 }; 406 407 typedef struct ext2_extent_handle *ext2_extent_handle_t; 408 typedef struct ext2_extent_path *ext2_extent_path_t; 409 410 /* 411 * Flags used by ext2fs_extent_get() 412 */ 413 #define EXT2_EXTENT_CURRENT 0x0000 414 #define EXT2_EXTENT_MOVE_MASK 0x000F 415 #define EXT2_EXTENT_ROOT 0x0001 416 #define EXT2_EXTENT_LAST_LEAF 0x0002 417 #define EXT2_EXTENT_FIRST_SIB 0x0003 418 #define EXT2_EXTENT_LAST_SIB 0x0004 419 #define EXT2_EXTENT_NEXT_SIB 0x0005 420 #define EXT2_EXTENT_PREV_SIB 0x0006 421 #define EXT2_EXTENT_NEXT_LEAF 0x0007 422 #define EXT2_EXTENT_PREV_LEAF 0x0008 423 #define EXT2_EXTENT_NEXT 0x0009 424 #define EXT2_EXTENT_PREV 0x000A 425 #define EXT2_EXTENT_UP 0x000B 426 #define EXT2_EXTENT_DOWN 0x000C 427 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D 428 429 /* 430 * Flags used by ext2fs_extent_insert() 431 */ 432 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 433 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 434 435 /* 436 * Flags used by ext2fs_extent_delete() 437 */ 438 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */ 439 440 /* 441 * Flags used by ext2fs_extent_set_bmap() 442 */ 443 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 444 445 /* 446 * Data structure returned by ext2fs_extent_get_info() 447 */ 448 struct ext2_extent_info { 449 int curr_entry; 450 int curr_level; 451 int num_entries; 452 int max_entries; 453 int max_depth; 454 int bytes_avail; 455 blk64_t max_lblk; 456 blk64_t max_pblk; 457 __u32 max_len; 458 __u32 max_uninit_len; 459 }; 460 461 /* 462 * Flags for directory block reading and writing functions 463 */ 464 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001 465 466 /* 467 * Return flags for the directory iterator functions 468 */ 469 #define DIRENT_CHANGED 1 470 #define DIRENT_ABORT 2 471 #define DIRENT_ERROR 3 472 473 /* 474 * Directory iterator flags 475 */ 476 477 #define DIRENT_FLAG_INCLUDE_EMPTY 1 478 #define DIRENT_FLAG_INCLUDE_REMOVED 2 479 #define DIRENT_FLAG_INCLUDE_CSUM 4 480 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8 481 482 #define DIRENT_DOT_FILE 1 483 #define DIRENT_DOT_DOT_FILE 2 484 #define DIRENT_OTHER_FILE 3 485 #define DIRENT_DELETED_FILE 4 486 #define DIRENT_CHECKSUM 5 487 488 /* 489 * Inode scan definitions 490 */ 491 typedef struct ext2_struct_inode_scan *ext2_inode_scan; 492 493 /* 494 * ext2fs_scan flags 495 */ 496 #define EXT2_SF_CHK_BADBLOCKS 0x0001 497 #define EXT2_SF_BAD_INODE_BLK 0x0002 498 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 499 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 500 #define EXT2_SF_DO_LAZY 0x0010 501 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020 502 503 /* 504 * ext2fs_check_if_mounted flags 505 */ 506 #define EXT2_MF_MOUNTED 1 507 #define EXT2_MF_ISROOT 2 508 #define EXT2_MF_READONLY 4 509 #define EXT2_MF_SWAP 8 510 #define EXT2_MF_BUSY 16 511 512 /* 513 * Ext2/linux mode flags. We define them here so that we don't need 514 * to depend on the OS's sys/stat.h, since we may be compiling on a 515 * non-Linux system. 516 */ 517 #define LINUX_S_IFMT 00170000 518 #define LINUX_S_IFSOCK 0140000 519 #define LINUX_S_IFLNK 0120000 520 #define LINUX_S_IFREG 0100000 521 #define LINUX_S_IFBLK 0060000 522 #define LINUX_S_IFDIR 0040000 523 #define LINUX_S_IFCHR 0020000 524 #define LINUX_S_IFIFO 0010000 525 #define LINUX_S_ISUID 0004000 526 #define LINUX_S_ISGID 0002000 527 #define LINUX_S_ISVTX 0001000 528 529 #define LINUX_S_IRWXU 00700 530 #define LINUX_S_IRUSR 00400 531 #define LINUX_S_IWUSR 00200 532 #define LINUX_S_IXUSR 00100 533 534 #define LINUX_S_IRWXG 00070 535 #define LINUX_S_IRGRP 00040 536 #define LINUX_S_IWGRP 00020 537 #define LINUX_S_IXGRP 00010 538 539 #define LINUX_S_IRWXO 00007 540 #define LINUX_S_IROTH 00004 541 #define LINUX_S_IWOTH 00002 542 #define LINUX_S_IXOTH 00001 543 544 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 545 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 546 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 547 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 548 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 549 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 550 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 551 552 /* 553 * ext2 size of an inode 554 */ 555 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 556 557 /* 558 * ext2_icount_t abstraction 559 */ 560 #define EXT2_ICOUNT_OPT_INCREMENT 0x01 561 #define EXT2_ICOUNT_OPT_FULLMAP 0x02 562 563 typedef struct ext2_icount *ext2_icount_t; 564 565 /* 566 * Flags for ext2fs_bmap 567 */ 568 #define BMAP_ALLOC 0x0001 569 #define BMAP_SET 0x0002 570 #define BMAP_UNINIT 0x0004 571 #define BMAP_ZERO 0x0008 572 573 /* 574 * Returned flags from ext2fs_bmap 575 */ 576 #define BMAP_RET_UNINIT 0x0001 577 578 /* 579 * Flags for imager.c functions 580 */ 581 #define IMAGER_FLAG_INODEMAP 1 582 #define IMAGER_FLAG_SPARSEWRITE 2 583 584 /* 585 * For checking structure magic numbers... 586 */ 587 588 #define EXT2_CHECK_MAGIC(struct, code) \ 589 if ((struct)->magic != (code)) return (code) 590 591 /* 592 * Features supported by this version of the library 593 */ 594 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 595 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 596 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 597 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 598 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 599 EXT2_FEATURE_COMPAT_EXT_ATTR|\ 600 EXT4_FEATURE_COMPAT_SPARSE_SUPER2) 601 602 #ifdef CONFIG_MMP 603 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP 604 #else 605 #define EXT4_LIB_INCOMPAT_MMP (0) 606 #endif 607 608 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 609 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 610 EXT2_FEATURE_INCOMPAT_META_BG|\ 611 EXT3_FEATURE_INCOMPAT_RECOVER|\ 612 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 613 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 614 EXT4_FEATURE_INCOMPAT_EA_INODE|\ 615 EXT4_LIB_INCOMPAT_MMP|\ 616 EXT4_FEATURE_INCOMPAT_64BIT|\ 617 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\ 618 EXT4_FEATURE_INCOMPAT_ENCRYPT|\ 619 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\ 620 EXT4_FEATURE_INCOMPAT_LARGEDIR) 621 622 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 623 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 624 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 625 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 626 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 627 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 628 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 629 EXT4_FEATURE_RO_COMPAT_QUOTA|\ 630 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\ 631 EXT4_FEATURE_RO_COMPAT_READONLY |\ 632 EXT4_FEATURE_RO_COMPAT_PROJECT |\ 633 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\ 634 EXT4_FEATURE_RO_COMPAT_VERITY) 635 636 /* 637 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 638 * to ext2fs_openfs() 639 */ 640 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 641 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA) 642 643 644 /* Translate a block number to a cluster number */ 645 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 646 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 647 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 648 /* Translate a cluster number to a block number */ 649 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 650 /* Translate # of blks to # of clusters */ 651 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 652 (fs)->cluster_ratio_bits) 653 654 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 655 typedef struct stat64 ext2fs_struct_stat; 656 #else 657 typedef struct stat ext2fs_struct_stat; 658 #endif 659 660 /* 661 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 662 * avoid the fsync call. 663 */ 664 #define EXT2_FLAG_FLUSH_NO_SYNC 1 665 666 /* 667 * Modify and iterate extended attributes 668 */ 669 struct ext2_xattr_handle; 670 #define XATTR_ABORT 1 671 #define XATTR_CHANGED 2 672 673 /* 674 * function prototypes 675 */ 676 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs) 677 { 678 return ext2fs_has_feature_metadata_csum(fs->super) || 679 ext2fs_has_feature_gdt_csum(fs->super); 680 } 681 682 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */ 683 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size) 684 { 685 return file_size >= 0x80000000ULL; 686 } 687 688 /* alloc.c */ 689 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group); 690 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 691 ext2fs_inode_bitmap map, ext2_ino_t *ret); 692 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 693 ext2fs_block_bitmap map, blk_t *ret); 694 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 695 ext2fs_block_bitmap map, blk64_t *ret); 696 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal, 697 ext2fs_block_bitmap map, blk64_t *ret, 698 struct blk_alloc_ctx *ctx); 699 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 700 blk_t finish, int num, 701 ext2fs_block_bitmap map, 702 blk_t *ret); 703 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 704 blk64_t finish, int num, 705 ext2fs_block_bitmap map, 706 blk64_t *ret); 707 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 708 char *block_buf, blk_t *ret); 709 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 710 char *block_buf, blk64_t *ret); 711 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal, 712 char *block_buf, blk64_t *ret, 713 struct blk_alloc_ctx *ctx); 714 715 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 716 errcode_t (*func)(ext2_filsys fs, 717 blk64_t goal, 718 blk64_t *ret), 719 errcode_t (**old)(ext2_filsys fs, 720 blk64_t goal, 721 blk64_t *ret)); 722 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino, 723 struct ext2_inode *inode, blk64_t lblk); 724 extern void ext2fs_set_new_range_callback(ext2_filsys fs, 725 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal, 726 blk64_t len, blk64_t *pblk, blk64_t *plen), 727 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal, 728 blk64_t len, blk64_t *pblk, blk64_t *plen)); 729 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs, 730 void (*func)(ext2_filsys fs, blk64_t blk, 731 blk_t num, int inuse), 732 void (**old)(ext2_filsys fs, blk64_t blk, 733 blk_t num, int inuse)); 734 #define EXT2_NEWRANGE_FIXED_GOAL (0x1) 735 #define EXT2_NEWRANGE_MIN_LENGTH (0x2) 736 #define EXT2_NEWRANGE_ALL_FLAGS (0x3) 737 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal, 738 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk, 739 blk64_t *plen); 740 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1) 741 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2) 742 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3) 743 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal, 744 blk_t len, blk64_t *ret); 745 746 /* alloc_sb.c */ 747 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 748 dgrp_t group, 749 ext2fs_block_bitmap bmap); 750 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 751 void (*func)(ext2_filsys fs, 752 blk64_t blk, 753 int inuse), 754 void (**old)(ext2_filsys fs, 755 blk64_t blk, 756 int inuse)); 757 758 /* alloc_stats.c */ 759 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 760 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 761 int inuse, int isdir); 762 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 763 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 764 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk, 765 blk_t num, int inuse); 766 767 /* alloc_tables.c */ 768 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 769 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 770 ext2fs_block_bitmap bmap); 771 772 /* badblocks.c */ 773 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 774 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 775 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 776 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 777 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 778 ext2_u32_iterate *ret); 779 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 780 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 781 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 782 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 783 784 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 785 int size); 786 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 787 blk_t blk); 788 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 789 blk_t blk); 790 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 791 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 792 extern errcode_t 793 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 794 ext2_badblocks_iterate *ret); 795 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 796 blk_t *blk); 797 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 798 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 799 ext2_badblocks_list *dest); 800 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 801 ext2_badblocks_list bb2); 802 extern int ext2fs_u32_list_count(ext2_u32_list bb); 803 804 /* bb_compat */ 805 extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 806 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 807 extern int badblocks_list_test(badblocks_list bb, blk_t blk); 808 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 809 badblocks_iterate *ret); 810 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 811 extern void badblocks_list_iterate_end(badblocks_iterate iter); 812 extern void badblocks_list_free(badblocks_list bb); 813 814 /* bb_inode.c */ 815 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 816 ext2_badblocks_list bb_list); 817 818 /* bitmaps.c */ 819 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 820 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 821 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 822 ext2fs_generic_bitmap *dest); 823 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 824 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 825 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 826 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 827 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 828 const char *descr, 829 ext2fs_block_bitmap *ret); 830 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 831 const char *descr, 832 ext2fs_block_bitmap *ret); 833 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 834 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 835 const char *descr, 836 ext2fs_inode_bitmap *ret); 837 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 838 ext2_ino_t end, ext2_ino_t *oend); 839 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 840 blk_t end, blk_t *oend); 841 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 842 blk64_t end, blk64_t *oend); 843 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 844 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 845 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 846 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 847 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 848 ext2fs_inode_bitmap bmap); 849 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 850 __u64 new_real_end, 851 ext2fs_inode_bitmap bmap); 852 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 853 ext2fs_block_bitmap bmap); 854 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 855 __u64 new_real_end, 856 ext2fs_block_bitmap bmap); 857 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 858 ext2fs_block_bitmap bm2); 859 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 860 ext2fs_inode_bitmap bm2); 861 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 862 ext2_ino_t start, unsigned int num, 863 void *in); 864 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 865 __u64 start, size_t num, 866 void *in); 867 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 868 ext2_ino_t start, unsigned int num, 869 void *out); 870 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 871 __u64 start, size_t num, 872 void *out); 873 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 874 blk_t start, unsigned int num, 875 void *in); 876 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 877 blk64_t start, size_t num, 878 void *in); 879 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 880 blk_t start, unsigned int num, 881 void *out); 882 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 883 blk64_t start, size_t num, 884 void *out); 885 886 /* blknum.c */ 887 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group); 888 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group); 889 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 890 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 891 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 892 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 893 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 894 struct ext2_inode *inode); 895 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 896 struct ext2_inode *inode); 897 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 898 extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 899 blk64_t blk); 900 extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 901 blk64_t blk); 902 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 903 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 904 blk64_t blk); 905 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 906 blk64_t blk); 907 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 908 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 909 blk64_t blk); 910 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 911 blk64_t blk); 912 /* Block group descriptor accessor functions */ 913 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 914 struct opaque_ext2_group_desc *gdp, 915 dgrp_t group); 916 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group); 917 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 918 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 919 blk64_t blk); 920 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group); 921 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 922 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 923 blk64_t blk); 924 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 925 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 926 blk64_t blk); 927 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 928 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 929 __u32 n); 930 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 931 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 932 __u32 n); 933 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 934 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 935 __u32 n); 936 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 937 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 938 __u32 n); 939 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 940 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 941 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 942 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 943 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 944 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 945 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 946 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs, 947 const struct ext2_inode *inode); 948 extern void ext2fs_file_acl_block_set(ext2_filsys fs, 949 struct ext2_inode *inode, blk64_t blk); 950 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode, 951 ext2_off64_t size); 952 953 /* block.c */ 954 extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 955 ext2_ino_t ino, 956 int flags, 957 char *block_buf, 958 int (*func)(ext2_filsys fs, 959 blk_t *blocknr, 960 int blockcnt, 961 void *priv_data), 962 void *priv_data); 963 errcode_t ext2fs_block_iterate2(ext2_filsys fs, 964 ext2_ino_t ino, 965 int flags, 966 char *block_buf, 967 int (*func)(ext2_filsys fs, 968 blk_t *blocknr, 969 e2_blkcnt_t blockcnt, 970 blk_t ref_blk, 971 int ref_offset, 972 void *priv_data), 973 void *priv_data); 974 errcode_t ext2fs_block_iterate3(ext2_filsys fs, 975 ext2_ino_t ino, 976 int flags, 977 char *block_buf, 978 int (*func)(ext2_filsys fs, 979 blk64_t *blocknr, 980 e2_blkcnt_t blockcnt, 981 blk64_t ref_blk, 982 int ref_offset, 983 void *priv_data), 984 void *priv_data); 985 986 /* bmap.c */ 987 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 988 struct ext2_inode *inode, 989 char *block_buf, int bmap_flags, 990 blk_t block, blk_t *phys_blk); 991 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 992 struct ext2_inode *inode, 993 char *block_buf, int bmap_flags, blk64_t block, 994 int *ret_flags, blk64_t *phys_blk); 995 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino, 996 struct ext2_inode *inode, blk64_t lblk, 997 blk64_t *pblk); 998 999 #if 0 1000 /* bmove.c */ 1001 extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 1002 ext2fs_block_bitmap reserve, 1003 ext2fs_block_bitmap alloc_map, 1004 int flags); 1005 #endif 1006 1007 /* check_desc.c */ 1008 extern errcode_t ext2fs_check_desc(ext2_filsys fs); 1009 1010 /* closefs.c */ 1011 extern errcode_t ext2fs_close(ext2_filsys fs); 1012 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 1013 extern errcode_t ext2fs_close_free(ext2_filsys *fs); 1014 extern errcode_t ext2fs_flush(ext2_filsys fs); 1015 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 1016 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block); 1017 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 1018 dgrp_t group, 1019 blk64_t *ret_super_blk, 1020 blk64_t *ret_old_desc_blk, 1021 blk64_t *ret_new_desc_blk, 1022 blk_t *ret_used_blks); 1023 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 1024 dgrp_t group, 1025 blk_t *ret_super_blk, 1026 blk_t *ret_old_desc_blk, 1027 blk_t *ret_new_desc_blk, 1028 int *ret_meta_bg); 1029 extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 1030 1031 /* crc32c.c */ 1032 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len); 1033 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 1034 1035 /* csum.c */ 1036 extern void ext2fs_init_csum_seed(ext2_filsys fs); 1037 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp); 1038 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp); 1039 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb); 1040 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs, 1041 struct ext2_super_block *sb); 1042 extern int ext2fs_superblock_csum_verify(ext2_filsys fs, 1043 struct ext2_super_block *sb); 1044 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs, 1045 ext2_ino_t inum, blk64_t block, 1046 struct ext2_ext_attr_header *hdr); 1047 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1048 blk64_t block, 1049 struct ext2_ext_attr_header *hdr); 1050 #define EXT2_DIRENT_TAIL(block, blocksize) \ 1051 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \ 1052 (blocksize) - sizeof(struct ext2_dir_entry_tail))) 1053 1054 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs, 1055 struct ext2_dir_entry_tail *t); 1056 extern int ext2fs_dirent_has_tail(ext2_filsys fs, 1057 struct ext2_dir_entry *dirent); 1058 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1059 struct ext2_dir_entry *dirent); 1060 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1061 struct ext2_dir_entry *dirent); 1062 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum, 1063 struct ext2_dir_entry *dirent); 1064 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs, 1065 struct ext2_dir_entry *dirent, 1066 struct ext2_dx_countlimit **cc, 1067 int *offset); 1068 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs, 1069 ext2_ino_t inum, 1070 struct ext3_extent_header *eh); 1071 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs, 1072 ext2_ino_t inum, 1073 struct ext3_extent_header *eh); 1074 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group, 1075 char *bitmap, int size); 1076 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group, 1077 char *bitmap, int size); 1078 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group, 1079 char *bitmap, int size); 1080 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group, 1081 char *bitmap, int size); 1082 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum, 1083 struct ext2_inode_large *inode); 1084 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1085 struct ext2_inode_large *inode); 1086 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 1087 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 1088 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 1089 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group); 1090 1091 /* dblist.c */ 1092 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 1093 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 1094 blk_t blk, int blockcnt); 1095 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 1096 blk64_t blk, e2_blkcnt_t blockcnt); 1097 extern void ext2fs_dblist_sort(ext2_dblist dblist, 1098 EXT2_QSORT_TYPE (*sortfunc)(const void *, 1099 const void *)); 1100 extern void ext2fs_dblist_sort2(ext2_dblist dblist, 1101 EXT2_QSORT_TYPE (*sortfunc)(const void *, 1102 const void *)); 1103 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 1104 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 1105 void *priv_data), 1106 void *priv_data); 1107 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 1108 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 1109 void *priv_data), 1110 void *priv_data); 1111 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist, 1112 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 1113 void *priv_data), 1114 unsigned long long start, 1115 unsigned long long count, 1116 void *priv_data); 1117 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 1118 blk_t blk, int blockcnt); 1119 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 1120 blk64_t blk, e2_blkcnt_t blockcnt); 1121 extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 1122 ext2_dblist *dest); 1123 extern int ext2fs_dblist_count(ext2_dblist dblist); 1124 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 1125 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 1126 struct ext2_db_entry **entry); 1127 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 1128 struct ext2_db_entry2 **entry); 1129 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 1130 1131 /* dblist_dir.c */ 1132 extern errcode_t 1133 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 1134 int flags, 1135 char *block_buf, 1136 int (*func)(ext2_ino_t dir, 1137 int entry, 1138 struct ext2_dir_entry *dirent, 1139 int offset, 1140 int blocksize, 1141 char *buf, 1142 void *priv_data), 1143 void *priv_data); 1144 1145 #if 0 1146 /* digest_encode.c */ 1147 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH 1148 extern int ext2fs_digest_encode(const char *src, int len, char *dst); 1149 extern int ext2fs_digest_decode(const char *src, int len, char *dst); 1150 #endif 1151 1152 /* dirblock.c */ 1153 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 1154 void *buf); 1155 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 1156 void *buf, int flags); 1157 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 1158 void *buf, int flags); 1159 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block, 1160 void *buf, int flags, ext2_ino_t ino); 1161 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 1162 void *buf); 1163 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 1164 void *buf, int flags); 1165 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 1166 void *buf, int flags); 1167 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block, 1168 void *buf, int flags, ext2_ino_t ino); 1169 1170 /* dirhash.c */ 1171 extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 1172 const __u32 *seed, 1173 ext2_dirhash_t *ret_hash, 1174 ext2_dirhash_t *ret_minor_hash); 1175 1176 1177 /* dir_iterate.c */ 1178 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1179 struct ext2_dir_entry *dirent, 1180 unsigned int *rec_len); 1181 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1182 unsigned int len, 1183 struct ext2_dir_entry *dirent); 1184 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1185 ext2_ino_t dir, 1186 int flags, 1187 char *block_buf, 1188 int (*func)(struct ext2_dir_entry *dirent, 1189 int offset, 1190 int blocksize, 1191 char *buf, 1192 void *priv_data), 1193 void *priv_data); 1194 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1195 ext2_ino_t dir, 1196 int flags, 1197 char *block_buf, 1198 int (*func)(ext2_ino_t dir, 1199 int entry, 1200 struct ext2_dir_entry *dirent, 1201 int offset, 1202 int blocksize, 1203 char *buf, 1204 void *priv_data), 1205 void *priv_data); 1206 1207 /* dupfs.c */ 1208 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1209 1210 /* expanddir.c */ 1211 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1212 1213 /* ext_attr.c */ 1214 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1215 void *data); 1216 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs, 1217 struct ext2_ext_attr_entry *entry, 1218 void *data, __u32 *hash); 1219 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1220 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1221 void *buf); 1222 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block, 1223 void *buf, ext2_ino_t inum); 1224 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1225 void *buf); 1226 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1227 void *buf); 1228 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block, 1229 void *buf, ext2_ino_t inum); 1230 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1231 char *block_buf, 1232 int adjust, __u32 *newcount); 1233 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1234 char *block_buf, 1235 int adjust, __u32 *newcount); 1236 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk, 1237 char *block_buf, 1238 int adjust, __u32 *newcount, 1239 ext2_ino_t inum); 1240 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle); 1241 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle); 1242 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h, 1243 int (*func)(char *name, char *value, 1244 size_t value_len, void *data), 1245 void *data); 1246 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key, 1247 void **value, size_t *value_len); 1248 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle, 1249 const char *key, 1250 const void *value, 1251 size_t value_len); 1252 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle, 1253 const char *key); 1254 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino, 1255 struct ext2_xattr_handle **handle); 1256 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle); 1257 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino, 1258 struct ext2_inode_large *inode); 1259 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count); 1260 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino, 1261 size_t *size); 1262 #define XATTR_HANDLE_FLAG_RAW 0x0001 1263 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle, 1264 unsigned int *new_flags, unsigned int *old_flags); 1265 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header, 1266 struct ext2_ext_attr_entry *end); 1267 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode); 1268 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash); 1269 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode); 1270 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count); 1271 1272 /* extent.c */ 1273 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1274 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1275 ext2_extent_handle_t *handle); 1276 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1277 struct ext2_inode *inode, 1278 ext2_extent_handle_t *ret_handle); 1279 extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1280 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1281 int flags, struct ext2fs_extent *extent); 1282 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle); 1283 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1284 struct ext2fs_extent *extent); 1285 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1286 struct ext2fs_extent *extent); 1287 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1288 blk64_t logical, blk64_t physical, 1289 int flags); 1290 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1291 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1292 struct ext2_extent_info *info); 1293 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1294 blk64_t blk); 1295 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle, 1296 int leaf_level, blk64_t blk); 1297 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle); 1298 size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle); 1299 1300 /* fallocate.c */ 1301 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1) 1302 #define EXT2_FALLOCATE_FORCE_INIT (0x2) 1303 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4) 1304 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8) 1305 #define EXT2_FALLOCATE_ALL_FLAGS (0xF) 1306 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino, 1307 struct ext2_inode *inode, blk64_t goal, 1308 blk64_t start, blk64_t len); 1309 1310 /* fileio.c */ 1311 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1312 struct ext2_inode *inode, 1313 int flags, ext2_file_t *ret); 1314 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1315 int flags, ext2_file_t *ret); 1316 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1317 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1318 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file); 1319 extern errcode_t ext2fs_file_close(ext2_file_t file); 1320 extern errcode_t ext2fs_file_flush(ext2_file_t file); 1321 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1322 unsigned int wanted, unsigned int *got); 1323 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1324 unsigned int nbytes, unsigned int *written); 1325 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1326 int whence, __u64 *ret_pos); 1327 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1328 int whence, ext2_off_t *ret_pos); 1329 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1330 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1331 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1332 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1333 1334 /* finddev.c */ 1335 extern char *ext2fs_find_block_device(dev_t device); 1336 1337 /* flushb.c */ 1338 extern errcode_t ext2fs_sync_device(int fd, int flushb); 1339 1340 /* freefs.c */ 1341 extern void ext2fs_free(ext2_filsys fs); 1342 extern void ext2fs_free_dblist(ext2_dblist dblist); 1343 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1344 extern void ext2fs_u32_list_free(ext2_u32_list bb); 1345 1346 /* gen_bitmap.c */ 1347 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1348 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1349 __u32 start, __u32 end, 1350 __u32 real_end, 1351 const char *descr, char *init_map, 1352 ext2fs_generic_bitmap *ret); 1353 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1354 __u32 end, 1355 __u32 real_end, 1356 const char *descr, 1357 ext2fs_generic_bitmap *ret); 1358 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1359 ext2fs_generic_bitmap *dest); 1360 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1361 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1362 errcode_t magic, 1363 errcode_t neq, 1364 ext2_ino_t end, 1365 ext2_ino_t *oend); 1366 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1367 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1368 __u32 new_end, 1369 __u32 new_real_end, 1370 ext2fs_generic_bitmap bmap); 1371 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1372 ext2fs_generic_bitmap bm1, 1373 ext2fs_generic_bitmap bm2); 1374 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1375 errcode_t magic, 1376 __u32 start, __u32 num, 1377 void *out); 1378 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1379 errcode_t magic, 1380 __u32 start, __u32 num, 1381 void *in); 1382 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap, 1383 __u32 start, __u32 end, 1384 __u32 *out); 1385 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap, 1386 __u32 start, __u32 end, 1387 __u32 *out); 1388 1389 /* gen_bitmap64.c */ 1390 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1391 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1392 int type, __u64 start, __u64 end, 1393 __u64 real_end, 1394 const char *descr, 1395 ext2fs_generic_bitmap *ret); 1396 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1397 ext2fs_generic_bitmap *dest); 1398 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1399 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1400 errcode_t neq, 1401 __u64 end, __u64 *oend); 1402 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1403 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1404 __u64 new_end, 1405 __u64 new_real_end); 1406 errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1407 ext2fs_generic_bitmap bm1, 1408 ext2fs_generic_bitmap bm2); 1409 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1410 __u64 start, unsigned int num, 1411 void *out); 1412 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1413 __u64 start, unsigned int num, 1414 void *in); 1415 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1416 ext2fs_block_bitmap *bitmap); 1417 1418 /* get_num_dirs.c */ 1419 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 1420 1421 /* getsize.c */ 1422 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1423 blk_t *retblocks); 1424 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1425 blk64_t *retblocks); 1426 1427 /* getsectsize.c */ 1428 extern int ext2fs_get_dio_alignment(int fd); 1429 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1430 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1431 1432 /* i_block.c */ 1433 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1434 blk64_t num_blocks); 1435 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1436 blk64_t num_blocks); 1437 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1438 1439 /* imager.c */ 1440 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1441 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1442 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1443 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1444 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1445 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1446 1447 /* ind_block.c */ 1448 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1449 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1450 1451 /* initialize.c */ 1452 extern errcode_t ext2fs_initialize(const char *name, int flags, 1453 struct ext2_super_block *param, 1454 io_manager manager, ext2_filsys *ret_fs); 1455 1456 /* icount.c */ 1457 extern void ext2fs_free_icount(ext2_icount_t icount); 1458 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1459 int flags, ext2_icount_t *ret); 1460 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1461 unsigned int size, 1462 ext2_icount_t hint, ext2_icount_t *ret); 1463 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1464 unsigned int size, 1465 ext2_icount_t *ret); 1466 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1467 __u16 *ret); 1468 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1469 __u16 *ret); 1470 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1471 __u16 *ret); 1472 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1473 __u16 count); 1474 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1475 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1476 1477 /* inline.c */ 1478 1479 extern errcode_t ext2fs_get_memalign(unsigned long size, 1480 unsigned long align, void *ptr); 1481 1482 /* inline_data.c */ 1483 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino); 1484 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino, 1485 size_t *size); 1486 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino, 1487 struct ext2_inode *inode, 1488 void *buf, size_t *size); 1489 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino, 1490 struct ext2_inode *inode, 1491 void *buf, size_t size); 1492 1493 /* inode.c */ 1494 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs, 1495 unsigned int cache_size); 1496 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache); 1497 extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1498 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1499 ext2_ino_t *ino, 1500 struct ext2_inode *inode, 1501 int bufsize); 1502 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8 1503 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1504 ext2_inode_scan *ret_scan); 1505 extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1506 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1507 struct ext2_inode *inode); 1508 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1509 int group); 1510 extern void ext2fs_set_inode_callback 1511 (ext2_inode_scan scan, 1512 errcode_t (*done_group)(ext2_filsys fs, 1513 ext2_inode_scan scan, 1514 dgrp_t group, 1515 void * priv_data), 1516 void *done_group_data); 1517 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1518 int clear_flags); 1519 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1520 struct ext2_inode * inode, 1521 int bufsize); 1522 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1523 struct ext2_inode * inode); 1524 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1525 struct ext2_inode * inode, 1526 int bufsize); 1527 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1528 struct ext2_inode * inode); 1529 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1530 struct ext2_inode * inode); 1531 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1532 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1533 1534 /* inode_io.c */ 1535 extern io_manager inode_io_manager; 1536 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1537 char **name); 1538 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1539 struct ext2_inode *inode, 1540 char **name); 1541 1542 /* ismounted.c */ 1543 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1544 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1545 char *mtpt, int mtlen); 1546 1547 /* punch.c */ 1548 /* 1549 * NOTE: This function removes from an inode the blocks "start", "end", and 1550 * every block in between. 1551 */ 1552 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1553 struct ext2_inode *inode, 1554 char *block_buf, blk64_t start, 1555 blk64_t end); 1556 1557 /* namei.c */ 1558 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1559 int namelen, char *buf, ext2_ino_t *inode); 1560 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1561 const char *name, ext2_ino_t *inode); 1562 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1563 const char *name, ext2_ino_t *inode); 1564 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1565 ext2_ino_t inode, ext2_ino_t *res_inode); 1566 1567 /* native.c */ 1568 int ext2fs_native_flag(void); 1569 1570 /* newdir.c */ 1571 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1572 ext2_ino_t parent_ino, char **block); 1573 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino, 1574 ext2_ino_t parent_ino, __u32 *iblock); 1575 1576 /* mkdir.c */ 1577 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1578 const char *name); 1579 1580 /* mkjournal.c */ 1581 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1582 blk_t *ret_blk, int *ret_count); 1583 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1584 blk64_t *ret_blk, int *ret_count); 1585 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1586 __u32 num_blocks, int flags, 1587 char **ret_jsb); 1588 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1589 ext2_filsys journal_dev); 1590 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1591 int flags); 1592 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks, 1593 blk64_t goal, int flags); 1594 extern int ext2fs_default_journal_size(__u64 num_blocks); 1595 extern int ext2fs_journal_sb_start(int blocksize); 1596 1597 /* openfs.c */ 1598 extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1599 unsigned int block_size, io_manager manager, 1600 ext2_filsys *ret_fs); 1601 extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1602 int flags, int superblock, 1603 unsigned int block_size, io_manager manager, 1604 ext2_filsys *ret_fs); 1605 /* 1606 * The dgrp_t argument to these two functions is not actually a group number 1607 * but a block number offset within a group table! Convert with the formula 1608 * (group_number / groups_per_block). 1609 */ 1610 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1611 blk64_t group_block, dgrp_t i); 1612 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1613 dgrp_t i); 1614 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1615 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1616 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1617 1618 /* get_pathname.c */ 1619 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1620 char **name); 1621 1622 /* link.c */ 1623 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1624 ext2_ino_t ino, int flags); 1625 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1626 ext2_ino_t ino, int flags); 1627 1628 /* symlink.c */ 1629 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino, 1630 const char *name, const char *target); 1631 int ext2fs_is_fast_symlink(struct ext2_inode *inode); 1632 1633 /* mmp.c */ 1634 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1635 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1636 errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1637 errcode_t ext2fs_mmp_init(ext2_filsys fs); 1638 errcode_t ext2fs_mmp_start(ext2_filsys fs); 1639 errcode_t ext2fs_mmp_update(ext2_filsys fs); 1640 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately); 1641 errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1642 unsigned ext2fs_mmp_new_seq(void); 1643 1644 /* read_bb.c */ 1645 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1646 ext2_badblocks_list *bb_list); 1647 1648 /* read_bb_file.c */ 1649 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1650 ext2_badblocks_list *bb_list, 1651 void *priv_data, 1652 void (*invalid)(ext2_filsys fs, 1653 blk_t blk, 1654 char *badstr, 1655 void *priv_data)); 1656 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1657 ext2_badblocks_list *bb_list, 1658 void (*invalid)(ext2_filsys fs, 1659 blk_t blk)); 1660 1661 /* res_gdt.c */ 1662 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1663 1664 /*sha256.c */ 1665 #define EXT2FS_SHA256_LENGTH 32 1666 #if 0 1667 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size, 1668 unsigned char out[EXT2FS_SHA256_LENGTH]); 1669 #endif 1670 1671 /* sha512.c */ 1672 #define EXT2FS_SHA512_LENGTH 64 1673 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size, 1674 unsigned char out[EXT2FS_SHA512_LENGTH]); 1675 1676 /* swapfs.c */ 1677 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size, 1678 int flags); 1679 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags); 1680 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size, 1681 int flags); 1682 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags); 1683 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1684 int has_header); 1685 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1686 struct ext2_ext_attr_header *from_hdr); 1687 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1688 struct ext2_ext_attr_entry *from_entry); 1689 extern void ext2fs_swap_super(struct ext2_super_block * super); 1690 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1691 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1692 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1693 struct ext2_inode_large *f, int hostorder, 1694 int bufsize); 1695 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1696 struct ext2_inode *f, int hostorder); 1697 extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1698 1699 /* unix_io.c */ 1700 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode); 1701 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1702 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1703 1704 /* valid_blk.c */ 1705 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1706 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, 1707 struct ext2_inode *inode); 1708 1709 /* version.c */ 1710 extern int ext2fs_parse_version_string(const char *ver_string); 1711 extern int ext2fs_get_library_version(const char **ver_string, 1712 const char **date_string); 1713 1714 /* write_bb_file.c */ 1715 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1716 unsigned int flags, 1717 FILE *f); 1718 1719 1720 /* inline functions */ 1721 #ifdef NO_INLINE_FUNCS 1722 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1723 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1724 extern errcode_t ext2fs_get_array(unsigned long count, 1725 unsigned long size, void *ptr); 1726 extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1727 unsigned long size, void *ptr); 1728 extern errcode_t ext2fs_free_mem(void *ptr); 1729 extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1730 unsigned long size, void *ptr); 1731 extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1732 extern void ext2fs_mark_changed(ext2_filsys fs); 1733 extern int ext2fs_test_changed(ext2_filsys fs); 1734 extern void ext2fs_mark_valid(ext2_filsys fs); 1735 extern void ext2fs_unmark_valid(ext2_filsys fs); 1736 extern int ext2fs_test_valid(ext2_filsys fs); 1737 extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1738 extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1739 extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1740 extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1741 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1742 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1743 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1744 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1745 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1746 struct ext2_inode *inode); 1747 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks); 1748 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1749 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1750 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry); 1751 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len); 1752 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry); 1753 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type); 1754 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode); 1755 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode); 1756 1757 #endif 1758 1759 /* 1760 * The actual inlined functions definitions themselves... 1761 * 1762 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1763 * functions at all! 1764 */ 1765 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1766 #ifdef INCLUDE_INLINE_FUNCS 1767 #define _INLINE_ extern 1768 #else 1769 #if (__STDC_VERSION__ >= 199901L) 1770 #define _INLINE_ inline 1771 #else 1772 #ifdef __GNUC__ 1773 #define _INLINE_ extern __inline__ 1774 #else /* For Watcom C */ 1775 #define _INLINE_ extern inline 1776 #endif /* __GNUC__ */ 1777 #endif /* __STDC_VERSION__ >= 199901L */ 1778 #endif 1779 1780 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1781 #include <string.h> 1782 /* 1783 * Allocate memory. The 'ptr' arg must point to a pointer. 1784 */ 1785 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1786 { 1787 void *pp; 1788 1789 pp = malloc(size); 1790 if (!pp) 1791 return EXT2_ET_NO_MEMORY; 1792 memcpy(ptr, &pp, sizeof (pp)); 1793 return 0; 1794 } 1795 1796 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1797 { 1798 void *pp; 1799 1800 pp = malloc(size); 1801 if (!pp) 1802 return EXT2_ET_NO_MEMORY; 1803 memset(pp, 0, size); 1804 memcpy(ptr, &pp, sizeof(pp)); 1805 return 0; 1806 } 1807 1808 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1809 { 1810 if (count && (~0UL)/count < size) 1811 return EXT2_ET_NO_MEMORY; 1812 return ext2fs_get_mem(count*size, ptr); 1813 } 1814 1815 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1816 unsigned long size, void *ptr) 1817 { 1818 void *pp; 1819 1820 if (count && (~0UL)/count < size) 1821 return EXT2_ET_NO_MEMORY; 1822 pp = calloc(count, size); 1823 if (!pp) 1824 return EXT2_ET_NO_MEMORY; 1825 memcpy(ptr, &pp, sizeof(pp)); 1826 return 0; 1827 } 1828 1829 /* 1830 * Free memory. The 'ptr' arg must point to a pointer. 1831 */ 1832 _INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1833 { 1834 void *p; 1835 1836 memcpy(&p, ptr, sizeof(p)); 1837 free(p); 1838 p = 0; 1839 memcpy(ptr, &p, sizeof(p)); 1840 return 0; 1841 } 1842 1843 /* 1844 * Resize memory. The 'ptr' arg must point to a pointer. 1845 */ 1846 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1847 unsigned long size, void *ptr) 1848 { 1849 void *p; 1850 1851 /* Use "memcpy" for pointer assignments here to avoid problems 1852 * with C99 strict type aliasing rules. */ 1853 memcpy(&p, ptr, sizeof(p)); 1854 p = realloc(p, size); 1855 if (!p) 1856 return EXT2_ET_NO_MEMORY; 1857 memcpy(ptr, &p, sizeof(p)); 1858 return 0; 1859 } 1860 #endif /* Custom memory routines */ 1861 1862 /* 1863 * Mark a filesystem superblock as dirty 1864 */ 1865 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1866 { 1867 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1868 } 1869 1870 /* 1871 * Mark a filesystem as changed 1872 */ 1873 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1874 { 1875 fs->flags |= EXT2_FLAG_CHANGED; 1876 } 1877 1878 /* 1879 * Check to see if a filesystem has changed 1880 */ 1881 _INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1882 { 1883 return (fs->flags & EXT2_FLAG_CHANGED); 1884 } 1885 1886 /* 1887 * Mark a filesystem as valid 1888 */ 1889 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1890 { 1891 fs->flags |= EXT2_FLAG_VALID; 1892 } 1893 1894 /* 1895 * Mark a filesystem as NOT valid 1896 */ 1897 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1898 { 1899 fs->flags &= ~EXT2_FLAG_VALID; 1900 } 1901 1902 /* 1903 * Check to see if a filesystem is valid 1904 */ 1905 _INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1906 { 1907 return (fs->flags & EXT2_FLAG_VALID); 1908 } 1909 1910 /* 1911 * Mark the inode bitmap as dirty 1912 */ 1913 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1914 { 1915 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1916 } 1917 1918 /* 1919 * Mark the block bitmap as dirty 1920 */ 1921 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1922 { 1923 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1924 } 1925 1926 /* 1927 * Check to see if a filesystem's inode bitmap is dirty 1928 */ 1929 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1930 { 1931 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1932 } 1933 1934 /* 1935 * Check to see if a filesystem's block bitmap is dirty 1936 */ 1937 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1938 { 1939 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1940 } 1941 1942 /* 1943 * Return the group # of a block 1944 */ 1945 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1946 { 1947 return ext2fs_group_of_blk2(fs, blk); 1948 } 1949 /* 1950 * Return the group # of an inode number 1951 */ 1952 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1953 { 1954 return (ino - 1) / fs->super->s_inodes_per_group; 1955 } 1956 1957 /* 1958 * Return the first block (inclusive) in a group 1959 */ 1960 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1961 { 1962 return (blk_t) ext2fs_group_first_block2(fs, group); 1963 } 1964 1965 /* 1966 * Return the last block (inclusive) in a group 1967 */ 1968 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1969 { 1970 return (blk_t) ext2fs_group_last_block2(fs, group); 1971 } 1972 1973 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1974 struct ext2_inode *inode) 1975 { 1976 return (blk_t) ext2fs_inode_data_blocks2(fs, inode); 1977 } 1978 1979 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks) 1980 { 1981 return blocks * ((fs->blocksize - 8) / sizeof(struct ext2_dx_entry)); 1982 } 1983 1984 /* 1985 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1986 */ 1987 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1988 { 1989 if (!a) 1990 return 0; 1991 return ((a - 1) / b) + 1; 1992 } 1993 1994 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1995 { 1996 if (!a) 1997 return 0; 1998 return ((a - 1) / b) + 1; 1999 } 2000 2001 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry) 2002 { 2003 return entry->name_len & 0xff; 2004 } 2005 2006 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len) 2007 { 2008 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff); 2009 } 2010 2011 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry) 2012 { 2013 return entry->name_len >> 8; 2014 } 2015 2016 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type) 2017 { 2018 entry->name_len = (entry->name_len & 0xff) | (type << 8); 2019 } 2020 2021 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode) 2022 { 2023 /* It is always safe to convert large inode to a small inode */ 2024 return (struct ext2_inode *) large_inode; 2025 } 2026 2027 _INLINE_ const struct ext2_inode * 2028 ext2fs_const_inode(const struct ext2_inode_large * large_inode) 2029 { 2030 /* It is always safe to convert large inode to a small inode */ 2031 return (const struct ext2_inode *) large_inode; 2032 } 2033 2034 #undef _INLINE_ 2035 #endif 2036 2037 /* htree levels for ext4 */ 2038 #define EXT4_HTREE_LEVEL_COMPAT 2 2039 #define EXT4_HTREE_LEVEL 3 2040 2041 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs) 2042 { 2043 if (ext2fs_has_feature_largedir(fs->super)) 2044 return EXT4_HTREE_LEVEL; 2045 2046 return EXT4_HTREE_LEVEL_COMPAT; 2047 } 2048 2049 #ifdef __cplusplus 2050 } 2051 #endif 2052 2053 #endif /* _EXT2FS_EXT2FS_H */ 2054
