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 22 extern "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 67 #ifdef __CHECK_ENDIAN__ 68 #define __bitwise __attribute__((bitwise)) 69 #else 70 #define __bitwise 71 #endif 72 73 typedef __u32 __bitwise ext2_ino_t; 74 typedef __u32 __bitwise blk_t; 75 typedef __u64 __bitwise blk64_t; 76 typedef __u32 __bitwise dgrp_t; 77 typedef __u32 __bitwise ext2_off_t; 78 typedef __u64 __bitwise ext2_off64_t; 79 typedef __s64 __bitwise e2_blkcnt_t; 80 typedef __u32 __bitwise ext2_dirhash_t; 81 82 #if EXT2_FLAT_INCLUDES 83 #include "com_err.h" 84 #include "ext2_io.h" 85 #include "ext2_err.h" 86 #include "ext2_ext_attr.h" 87 #else 88 #include <et/com_err.h> 89 #include <ext2fs/ext2_io.h> 90 #include <ext2fs/ext2_err.h> 91 #include <ext2fs/ext2_ext_attr.h> 92 #endif 93 94 /* 95 * Portability help for Microsoft Visual C++ 96 */ 97 #ifdef _MSC_VER 98 #define EXT2_QSORT_TYPE int __cdecl 99 #else 100 #define EXT2_QSORT_TYPE int 101 #endif 102 103 typedef struct struct_ext2_filsys *ext2_filsys; 104 105 #define EXT2FS_MARK_ERROR 0 106 #define EXT2FS_UNMARK_ERROR 1 107 #define EXT2FS_TEST_ERROR 2 108 109 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 110 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 111 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 112 113 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 114 115 116 /* 117 * Badblocks list definitions 118 */ 119 120 typedef struct ext2_struct_u32_list *ext2_badblocks_list; 121 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 122 123 typedef struct ext2_struct_u32_list *ext2_u32_list; 124 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 125 126 /* old */ 127 typedef struct ext2_struct_u32_list *badblocks_list; 128 typedef struct ext2_struct_u32_iterate *badblocks_iterate; 129 130 #define BADBLOCKS_FLAG_DIRTY 1 131 132 /* 133 * ext2_dblist structure and abstractions (see dblist.c) 134 */ 135 struct ext2_db_entry2 { 136 ext2_ino_t ino; 137 blk64_t blk; 138 e2_blkcnt_t blockcnt; 139 }; 140 141 /* Ye Olde 32-bit version */ 142 struct ext2_db_entry { 143 ext2_ino_t ino; 144 blk_t blk; 145 int blockcnt; 146 }; 147 148 typedef struct ext2_struct_dblist *ext2_dblist; 149 150 #define DBLIST_ABORT 1 151 152 /* 153 * ext2_fileio definitions 154 */ 155 156 #define EXT2_FILE_WRITE 0x0001 157 #define EXT2_FILE_CREATE 0x0002 158 159 #define EXT2_FILE_MASK 0x00FF 160 161 #define EXT2_FILE_BUF_DIRTY 0x4000 162 #define EXT2_FILE_BUF_VALID 0x2000 163 164 typedef struct ext2_file *ext2_file_t; 165 166 #define EXT2_SEEK_SET 0 167 #define EXT2_SEEK_CUR 1 168 #define EXT2_SEEK_END 2 169 170 /* 171 * Flags for the ext2_filsys structure and for ext2fs_open() 172 */ 173 #define EXT2_FLAG_RW 0x01 174 #define EXT2_FLAG_CHANGED 0x02 175 #define EXT2_FLAG_DIRTY 0x04 176 #define EXT2_FLAG_VALID 0x08 177 #define EXT2_FLAG_IB_DIRTY 0x10 178 #define EXT2_FLAG_BB_DIRTY 0x20 179 #define EXT2_FLAG_SWAP_BYTES 0x40 180 #define EXT2_FLAG_SWAP_BYTES_READ 0x80 181 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 182 #define EXT2_FLAG_MASTER_SB_ONLY 0x200 183 #define EXT2_FLAG_FORCE 0x400 184 #define EXT2_FLAG_SUPER_ONLY 0x800 185 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 186 #define EXT2_FLAG_IMAGE_FILE 0x2000 187 #define EXT2_FLAG_EXCLUSIVE 0x4000 188 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 189 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 190 #define EXT2_FLAG_64BITS 0x20000 191 #define EXT2_FLAG_PRINT_PROGRESS 0x40000 192 #define EXT2_FLAG_DIRECT_IO 0x80000 193 #define EXT2_FLAG_SKIP_MMP 0x100000 194 195 /* 196 * Special flag in the ext2 inode i_flag field that means that this is 197 * a new inode. (So that ext2_write_inode() can clear extra fields.) 198 */ 199 #define EXT2_NEW_INODE_FL 0x80000000 200 201 /* 202 * Flags for mkjournal 203 */ 204 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 205 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 206 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */ 207 208 struct opaque_ext2_group_desc; 209 210 struct struct_ext2_filsys { 211 errcode_t magic; 212 io_channel io; 213 int flags; 214 char * device_name; 215 struct ext2_super_block * super; 216 unsigned int blocksize; 217 int fragsize; 218 dgrp_t group_desc_count; 219 unsigned long desc_blocks; 220 struct opaque_ext2_group_desc * group_desc; 221 unsigned int inode_blocks_per_group; 222 ext2fs_inode_bitmap inode_map; 223 ext2fs_block_bitmap block_map; 224 /* XXX FIXME-64: not 64-bit safe, but not used? */ 225 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 226 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 227 errcode_t (*write_bitmaps)(ext2_filsys fs); 228 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 229 struct ext2_inode *inode); 230 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 231 struct ext2_inode *inode); 232 ext2_badblocks_list badblocks; 233 ext2_dblist dblist; 234 __u32 stride; /* for mke2fs */ 235 struct ext2_super_block * orig_super; 236 struct ext2_image_hdr * image_header; 237 __u32 umask; 238 time_t now; 239 int cluster_ratio_bits; 240 __u16 default_bitmap_type; 241 __u16 pad; 242 /* 243 * Reserved for future expansion 244 */ 245 __u32 reserved[5]; 246 247 /* 248 * Reserved for the use of the calling application. 249 */ 250 void * priv_data; 251 252 /* 253 * Inode cache 254 */ 255 struct ext2_inode_cache *icache; 256 io_channel image_io; 257 258 /* 259 * More callback functions 260 */ 261 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 262 blk64_t *ret); 263 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 264 265 /* 266 * Buffers for Multiple mount protection(MMP) block. 267 */ 268 void *mmp_buf; 269 void *mmp_cmp; 270 int mmp_fd; 271 272 /* 273 * Time at which e2fsck last updated the MMP block. 274 */ 275 long mmp_last_written; 276 }; 277 278 #if EXT2_FLAT_INCLUDES 279 #include "e2_bitops.h" 280 #else 281 #include <ext2fs/bitops.h> 282 #endif 283 284 /* 285 * 64-bit bitmap backend types 286 */ 287 #define EXT2FS_BMAP64_BITARRAY 1 288 #define EXT2FS_BMAP64_RBTREE 2 289 #define EXT2FS_BMAP64_AUTODIR 3 290 291 /* 292 * Return flags for the block iterator functions 293 */ 294 #define BLOCK_CHANGED 1 295 #define BLOCK_ABORT 2 296 #define BLOCK_ERROR 4 297 298 /* 299 * Block interate flags 300 * 301 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 302 * function should be called on blocks where the block number is zero. 303 * This is used by ext2fs_expand_dir() to be able to add a new block 304 * to an inode. It can also be used for programs that want to be able 305 * to deal with files that contain "holes". 306 * 307 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 308 * the indirect, doubly indirect, etc. blocks should be called after 309 * all of the blocks containined in the indirect blocks are processed. 310 * This is useful if you are going to be deallocating blocks from an 311 * inode. 312 * 313 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 314 * called for data blocks only. 315 * 316 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 317 * modify returned block number. 318 * 319 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 320 * ext2fs_block_iterate2 that large files won't be accepted. 321 */ 322 #define BLOCK_FLAG_APPEND 1 323 #define BLOCK_FLAG_HOLE 1 324 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 325 #define BLOCK_FLAG_DATA_ONLY 4 326 #define BLOCK_FLAG_READ_ONLY 8 327 328 #define BLOCK_FLAG_NO_LARGE 0x1000 329 330 /* 331 * Magic "block count" return values for the block iterator function. 332 */ 333 #define BLOCK_COUNT_IND (-1) 334 #define BLOCK_COUNT_DIND (-2) 335 #define BLOCK_COUNT_TIND (-3) 336 #define BLOCK_COUNT_TRANSLATOR (-4) 337 338 #if 0 339 /* 340 * Flags for ext2fs_move_blocks 341 */ 342 #define EXT2_BMOVE_GET_DBLIST 0x0001 343 #define EXT2_BMOVE_DEBUG 0x0002 344 #endif 345 346 /* 347 * Generic (non-filesystem layout specific) extents structure 348 */ 349 350 #define EXT2_EXTENT_FLAGS_LEAF 0x0001 351 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002 352 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 353 354 struct ext2fs_extent { 355 blk64_t e_pblk; /* first physical block */ 356 blk64_t e_lblk; /* first logical block extent covers */ 357 __u32 e_len; /* number of blocks covered by extent */ 358 __u32 e_flags; /* extent flags */ 359 }; 360 361 typedef struct ext2_extent_handle *ext2_extent_handle_t; 362 typedef struct ext2_extent_path *ext2_extent_path_t; 363 364 /* 365 * Flags used by ext2fs_extent_get() 366 */ 367 #define EXT2_EXTENT_CURRENT 0x0000 368 #define EXT2_EXTENT_MOVE_MASK 0x000F 369 #define EXT2_EXTENT_ROOT 0x0001 370 #define EXT2_EXTENT_LAST_LEAF 0x0002 371 #define EXT2_EXTENT_FIRST_SIB 0x0003 372 #define EXT2_EXTENT_LAST_SIB 0x0004 373 #define EXT2_EXTENT_NEXT_SIB 0x0005 374 #define EXT2_EXTENT_PREV_SIB 0x0006 375 #define EXT2_EXTENT_NEXT_LEAF 0x0007 376 #define EXT2_EXTENT_PREV_LEAF 0x0008 377 #define EXT2_EXTENT_NEXT 0x0009 378 #define EXT2_EXTENT_PREV 0x000A 379 #define EXT2_EXTENT_UP 0x000B 380 #define EXT2_EXTENT_DOWN 0x000C 381 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D 382 383 /* 384 * Flags used by ext2fs_extent_insert() 385 */ 386 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 387 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 388 389 /* 390 * Flags used by ext2fs_extent_delete() 391 */ 392 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 393 394 /* 395 * Flags used by ext2fs_extent_set_bmap() 396 */ 397 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 398 399 /* 400 * Data structure returned by ext2fs_extent_get_info() 401 */ 402 struct ext2_extent_info { 403 int curr_entry; 404 int curr_level; 405 int num_entries; 406 int max_entries; 407 int max_depth; 408 int bytes_avail; 409 blk64_t max_lblk; 410 blk64_t max_pblk; 411 __u32 max_len; 412 __u32 max_uninit_len; 413 }; 414 415 /* 416 * Flags for directory block reading and writing functions 417 */ 418 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001 419 420 /* 421 * Return flags for the directory iterator functions 422 */ 423 #define DIRENT_CHANGED 1 424 #define DIRENT_ABORT 2 425 #define DIRENT_ERROR 3 426 427 /* 428 * Directory iterator flags 429 */ 430 431 #define DIRENT_FLAG_INCLUDE_EMPTY 1 432 #define DIRENT_FLAG_INCLUDE_REMOVED 2 433 434 #define DIRENT_DOT_FILE 1 435 #define DIRENT_DOT_DOT_FILE 2 436 #define DIRENT_OTHER_FILE 3 437 #define DIRENT_DELETED_FILE 4 438 439 /* 440 * Inode scan definitions 441 */ 442 typedef struct ext2_struct_inode_scan *ext2_inode_scan; 443 444 /* 445 * ext2fs_scan flags 446 */ 447 #define EXT2_SF_CHK_BADBLOCKS 0x0001 448 #define EXT2_SF_BAD_INODE_BLK 0x0002 449 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 450 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 451 #define EXT2_SF_DO_LAZY 0x0010 452 453 /* 454 * ext2fs_check_if_mounted flags 455 */ 456 #define EXT2_MF_MOUNTED 1 457 #define EXT2_MF_ISROOT 2 458 #define EXT2_MF_READONLY 4 459 #define EXT2_MF_SWAP 8 460 #define EXT2_MF_BUSY 16 461 462 /* 463 * Ext2/linux mode flags. We define them here so that we don't need 464 * to depend on the OS's sys/stat.h, since we may be compiling on a 465 * non-Linux system. 466 */ 467 #define LINUX_S_IFMT 00170000 468 #define LINUX_S_IFSOCK 0140000 469 #define LINUX_S_IFLNK 0120000 470 #define LINUX_S_IFREG 0100000 471 #define LINUX_S_IFBLK 0060000 472 #define LINUX_S_IFDIR 0040000 473 #define LINUX_S_IFCHR 0020000 474 #define LINUX_S_IFIFO 0010000 475 #define LINUX_S_ISUID 0004000 476 #define LINUX_S_ISGID 0002000 477 #define LINUX_S_ISVTX 0001000 478 479 #define LINUX_S_IRWXU 00700 480 #define LINUX_S_IRUSR 00400 481 #define LINUX_S_IWUSR 00200 482 #define LINUX_S_IXUSR 00100 483 484 #define LINUX_S_IRWXG 00070 485 #define LINUX_S_IRGRP 00040 486 #define LINUX_S_IWGRP 00020 487 #define LINUX_S_IXGRP 00010 488 489 #define LINUX_S_IRWXO 00007 490 #define LINUX_S_IROTH 00004 491 #define LINUX_S_IWOTH 00002 492 #define LINUX_S_IXOTH 00001 493 494 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 495 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 496 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 497 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 498 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 499 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 500 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 501 502 /* 503 * ext2 size of an inode 504 */ 505 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 506 507 /* 508 * ext2_icount_t abstraction 509 */ 510 #define EXT2_ICOUNT_OPT_INCREMENT 0x01 511 512 typedef struct ext2_icount *ext2_icount_t; 513 514 /* 515 * Flags for ext2fs_bmap 516 */ 517 #define BMAP_ALLOC 0x0001 518 #define BMAP_SET 0x0002 519 520 /* 521 * Returned flags from ext2fs_bmap 522 */ 523 #define BMAP_RET_UNINIT 0x0001 524 525 /* 526 * Flags for imager.c functions 527 */ 528 #define IMAGER_FLAG_INODEMAP 1 529 #define IMAGER_FLAG_SPARSEWRITE 2 530 531 /* 532 * For checking structure magic numbers... 533 */ 534 535 #define EXT2_CHECK_MAGIC(struct, code) \ 536 if ((struct)->magic != (code)) return (code) 537 538 539 /* 540 * For ext2 compression support 541 */ 542 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 543 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 544 545 /* 546 * Features supported by this version of the library 547 */ 548 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 549 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 550 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 551 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 552 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 553 EXT2_FEATURE_COMPAT_EXT_ATTR) 554 555 /* This #ifdef is temporary until compression is fully supported */ 556 #ifdef ENABLE_COMPRESSION 557 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 558 /* If the below warning bugs you, then have 559 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 560 environment at configure time. */ 561 #warning "Compression support is experimental" 562 #endif 563 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 564 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 565 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 566 EXT2_FEATURE_INCOMPAT_META_BG|\ 567 EXT3_FEATURE_INCOMPAT_RECOVER|\ 568 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 569 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 570 EXT4_FEATURE_INCOMPAT_MMP|\ 571 EXT4_FEATURE_INCOMPAT_64BIT) 572 #else 573 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 574 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 575 EXT2_FEATURE_INCOMPAT_META_BG|\ 576 EXT3_FEATURE_INCOMPAT_RECOVER|\ 577 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 578 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 579 EXT4_FEATURE_INCOMPAT_MMP|\ 580 EXT4_FEATURE_INCOMPAT_64BIT) 581 #endif 582 #ifdef CONFIG_QUOTA 583 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 584 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 585 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 586 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 587 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 588 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 589 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 590 EXT4_FEATURE_RO_COMPAT_QUOTA) 591 #else 592 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 593 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 594 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 595 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 596 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 597 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 598 EXT4_FEATURE_RO_COMPAT_BIGALLOC) 599 #endif 600 601 /* 602 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 603 * to ext2fs_openfs() 604 */ 605 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 606 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA) 607 608 609 /* Translate a block number to a cluster number */ 610 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 611 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 612 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 613 /* Translate a cluster number to a block number */ 614 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 615 /* Translate # of blks to # of clusters */ 616 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 617 (fs)->cluster_ratio_bits) 618 619 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 620 typedef struct stat64 ext2fs_struct_stat; 621 #else 622 typedef struct stat ext2fs_struct_stat; 623 #endif 624 625 /* 626 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 627 * avoid the fsync call. 628 */ 629 #define EXT2_FLAG_FLUSH_NO_SYNC 1 630 631 /* 632 * function prototypes 633 */ 634 635 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */ 636 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size) 637 { 638 return file_size >= 0x80000000ULL; 639 } 640 641 /* alloc.c */ 642 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 643 ext2fs_inode_bitmap map, ext2_ino_t *ret); 644 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 645 ext2fs_block_bitmap map, blk_t *ret); 646 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 647 ext2fs_block_bitmap map, blk64_t *ret); 648 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 649 blk_t finish, int num, 650 ext2fs_block_bitmap map, 651 blk_t *ret); 652 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 653 blk64_t finish, int num, 654 ext2fs_block_bitmap map, 655 blk64_t *ret); 656 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 657 char *block_buf, blk_t *ret); 658 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 659 char *block_buf, blk64_t *ret); 660 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 661 errcode_t (*func)(ext2_filsys fs, 662 blk64_t goal, 663 blk64_t *ret), 664 errcode_t (**old)(ext2_filsys fs, 665 blk64_t goal, 666 blk64_t *ret)); 667 668 /* alloc_sb.c */ 669 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 670 dgrp_t group, 671 ext2fs_block_bitmap bmap); 672 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 673 void (*func)(ext2_filsys fs, 674 blk64_t blk, 675 int inuse), 676 void (**old)(ext2_filsys fs, 677 blk64_t blk, 678 int inuse)); 679 680 /* alloc_stats.c */ 681 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 682 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 683 int inuse, int isdir); 684 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 685 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 686 687 /* alloc_tables.c */ 688 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 689 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 690 ext2fs_block_bitmap bmap); 691 692 /* badblocks.c */ 693 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 694 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 695 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 696 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 697 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 698 ext2_u32_iterate *ret); 699 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 700 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 701 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 702 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 703 704 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 705 int size); 706 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 707 blk_t blk); 708 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 709 blk_t blk); 710 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 711 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 712 extern errcode_t 713 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 714 ext2_badblocks_iterate *ret); 715 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 716 blk_t *blk); 717 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 718 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 719 ext2_badblocks_list *dest); 720 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 721 ext2_badblocks_list bb2); 722 extern int ext2fs_u32_list_count(ext2_u32_list bb); 723 724 /* bb_compat */ 725 extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 726 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 727 extern int badblocks_list_test(badblocks_list bb, blk_t blk); 728 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 729 badblocks_iterate *ret); 730 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 731 extern void badblocks_list_iterate_end(badblocks_iterate iter); 732 extern void badblocks_list_free(badblocks_list bb); 733 734 /* bb_inode.c */ 735 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 736 ext2_badblocks_list bb_list); 737 738 /* bitmaps.c */ 739 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 740 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 741 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 742 ext2fs_generic_bitmap *dest); 743 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 744 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 745 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 746 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 747 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 748 const char *descr, 749 ext2fs_block_bitmap *ret); 750 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 751 const char *descr, 752 ext2fs_block_bitmap *ret); 753 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 754 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 755 const char *descr, 756 ext2fs_inode_bitmap *ret); 757 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 758 ext2_ino_t end, ext2_ino_t *oend); 759 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 760 blk_t end, blk_t *oend); 761 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 762 blk64_t end, blk64_t *oend); 763 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 764 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 765 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 766 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 767 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 768 ext2fs_inode_bitmap bmap); 769 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 770 __u64 new_real_end, 771 ext2fs_inode_bitmap bmap); 772 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 773 ext2fs_block_bitmap bmap); 774 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 775 __u64 new_real_end, 776 ext2fs_block_bitmap bmap); 777 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 778 ext2fs_block_bitmap bm2); 779 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 780 ext2fs_inode_bitmap bm2); 781 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 782 ext2_ino_t start, unsigned int num, 783 void *in); 784 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 785 __u64 start, size_t num, 786 void *in); 787 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 788 ext2_ino_t start, unsigned int num, 789 void *out); 790 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 791 __u64 start, size_t num, 792 void *out); 793 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 794 blk_t start, unsigned int num, 795 void *in); 796 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 797 blk64_t start, size_t num, 798 void *in); 799 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 800 blk_t start, unsigned int num, 801 void *out); 802 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 803 blk64_t start, size_t num, 804 void *out); 805 806 /* blknum.c */ 807 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 808 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 809 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 810 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 811 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 812 struct ext2_inode *inode); 813 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 814 struct ext2_inode *inode); 815 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 816 extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 817 blk64_t blk); 818 extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 819 blk64_t blk); 820 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 821 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 822 blk64_t blk); 823 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 824 blk64_t blk); 825 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 826 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 827 blk64_t blk); 828 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 829 blk64_t blk); 830 /* Block group descriptor accessor functions */ 831 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 832 struct opaque_ext2_group_desc *gdp, 833 dgrp_t group); 834 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 835 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 836 blk64_t blk); 837 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 838 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 839 blk64_t blk); 840 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 841 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 842 blk64_t blk); 843 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 844 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 845 __u32 n); 846 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 847 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 848 __u32 n); 849 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 850 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 851 __u32 n); 852 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 853 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 854 __u32 n); 855 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 856 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 857 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 858 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 859 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 860 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 861 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 862 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs, 863 const struct ext2_inode *inode); 864 extern void ext2fs_file_acl_block_set(ext2_filsys fs, 865 struct ext2_inode *inode, blk64_t blk); 866 867 /* block.c */ 868 extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 869 ext2_ino_t ino, 870 int flags, 871 char *block_buf, 872 int (*func)(ext2_filsys fs, 873 blk_t *blocknr, 874 int blockcnt, 875 void *priv_data), 876 void *priv_data); 877 errcode_t ext2fs_block_iterate2(ext2_filsys fs, 878 ext2_ino_t ino, 879 int flags, 880 char *block_buf, 881 int (*func)(ext2_filsys fs, 882 blk_t *blocknr, 883 e2_blkcnt_t blockcnt, 884 blk_t ref_blk, 885 int ref_offset, 886 void *priv_data), 887 void *priv_data); 888 errcode_t ext2fs_block_iterate3(ext2_filsys fs, 889 ext2_ino_t ino, 890 int flags, 891 char *block_buf, 892 int (*func)(ext2_filsys fs, 893 blk64_t *blocknr, 894 e2_blkcnt_t blockcnt, 895 blk64_t ref_blk, 896 int ref_offset, 897 void *priv_data), 898 void *priv_data); 899 900 /* bmap.c */ 901 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 902 struct ext2_inode *inode, 903 char *block_buf, int bmap_flags, 904 blk_t block, blk_t *phys_blk); 905 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 906 struct ext2_inode *inode, 907 char *block_buf, int bmap_flags, blk64_t block, 908 int *ret_flags, blk64_t *phys_blk); 909 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino, 910 struct ext2_inode *inode, blk64_t lblk, 911 blk64_t *pblk); 912 913 #if 0 914 /* bmove.c */ 915 extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 916 ext2fs_block_bitmap reserve, 917 ext2fs_block_bitmap alloc_map, 918 int flags); 919 #endif 920 921 /* check_desc.c */ 922 extern errcode_t ext2fs_check_desc(ext2_filsys fs); 923 924 /* closefs.c */ 925 extern errcode_t ext2fs_close(ext2_filsys fs); 926 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 927 extern errcode_t ext2fs_flush(ext2_filsys fs); 928 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 929 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block); 930 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 931 dgrp_t group, 932 blk64_t *ret_super_blk, 933 blk64_t *ret_old_desc_blk, 934 blk64_t *ret_new_desc_blk, 935 blk_t *ret_used_blks); 936 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 937 dgrp_t group, 938 blk_t *ret_super_blk, 939 blk_t *ret_old_desc_blk, 940 blk_t *ret_new_desc_blk, 941 int *ret_meta_bg); 942 extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 943 944 /* crc32c.c */ 945 extern __u32 ext2fs_crc32c_be(__u32 crc, unsigned char const *p, size_t len); 946 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 947 948 /* csum.c */ 949 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 950 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 951 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 952 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group); 953 954 /* dblist.c */ 955 956 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 957 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 958 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 959 blk_t blk, int blockcnt); 960 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 961 blk64_t blk, e2_blkcnt_t blockcnt); 962 extern void ext2fs_dblist_sort(ext2_dblist dblist, 963 EXT2_QSORT_TYPE (*sortfunc)(const void *, 964 const void *)); 965 extern void ext2fs_dblist_sort2(ext2_dblist dblist, 966 EXT2_QSORT_TYPE (*sortfunc)(const void *, 967 const void *)); 968 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 969 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 970 void *priv_data), 971 void *priv_data); 972 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 973 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 974 void *priv_data), 975 void *priv_data); 976 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 977 blk_t blk, int blockcnt); 978 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 979 blk64_t blk, e2_blkcnt_t blockcnt); 980 extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 981 ext2_dblist *dest); 982 extern int ext2fs_dblist_count(ext2_dblist dblist); 983 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 984 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 985 struct ext2_db_entry **entry); 986 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 987 struct ext2_db_entry2 **entry); 988 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 989 990 /* dblist_dir.c */ 991 extern errcode_t 992 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 993 int flags, 994 char *block_buf, 995 int (*func)(ext2_ino_t dir, 996 int entry, 997 struct ext2_dir_entry *dirent, 998 int offset, 999 int blocksize, 1000 char *buf, 1001 void *priv_data), 1002 void *priv_data); 1003 1004 /* dirblock.c */ 1005 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 1006 void *buf); 1007 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 1008 void *buf, int flags); 1009 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 1010 void *buf, int flags); 1011 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 1012 void *buf); 1013 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 1014 void *buf, int flags); 1015 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 1016 void *buf, int flags); 1017 1018 /* dirhash.c */ 1019 extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 1020 const __u32 *seed, 1021 ext2_dirhash_t *ret_hash, 1022 ext2_dirhash_t *ret_minor_hash); 1023 1024 1025 /* dir_iterate.c */ 1026 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1027 struct ext2_dir_entry *dirent, 1028 unsigned int *rec_len); 1029 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1030 unsigned int len, 1031 struct ext2_dir_entry *dirent); 1032 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1033 ext2_ino_t dir, 1034 int flags, 1035 char *block_buf, 1036 int (*func)(struct ext2_dir_entry *dirent, 1037 int offset, 1038 int blocksize, 1039 char *buf, 1040 void *priv_data), 1041 void *priv_data); 1042 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1043 ext2_ino_t dir, 1044 int flags, 1045 char *block_buf, 1046 int (*func)(ext2_ino_t dir, 1047 int entry, 1048 struct ext2_dir_entry *dirent, 1049 int offset, 1050 int blocksize, 1051 char *buf, 1052 void *priv_data), 1053 void *priv_data); 1054 1055 /* dupfs.c */ 1056 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1057 1058 /* expanddir.c */ 1059 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1060 1061 /* ext_attr.c */ 1062 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1063 void *data); 1064 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1065 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1066 void *buf); 1067 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1068 void *buf); 1069 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1070 void *buf); 1071 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1072 char *block_buf, 1073 int adjust, __u32 *newcount); 1074 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1075 char *block_buf, 1076 int adjust, __u32 *newcount); 1077 1078 /* extent.c */ 1079 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1080 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1081 ext2_extent_handle_t *handle); 1082 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1083 struct ext2_inode *inode, 1084 ext2_extent_handle_t *ret_handle); 1085 extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1086 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1087 int flags, struct ext2fs_extent *extent); 1088 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle); 1089 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1090 struct ext2fs_extent *extent); 1091 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1092 struct ext2fs_extent *extent); 1093 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1094 blk64_t logical, blk64_t physical, 1095 int flags); 1096 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1097 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1098 struct ext2_extent_info *info); 1099 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1100 blk64_t blk); 1101 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle, 1102 int leaf_level, blk64_t blk); 1103 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle); 1104 1105 /* fileio.c */ 1106 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1107 struct ext2_inode *inode, 1108 int flags, ext2_file_t *ret); 1109 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1110 int flags, ext2_file_t *ret); 1111 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1112 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1113 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file); 1114 extern errcode_t ext2fs_file_close(ext2_file_t file); 1115 extern errcode_t ext2fs_file_flush(ext2_file_t file); 1116 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1117 unsigned int wanted, unsigned int *got); 1118 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1119 unsigned int nbytes, unsigned int *written); 1120 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1121 int whence, __u64 *ret_pos); 1122 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1123 int whence, ext2_off_t *ret_pos); 1124 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1125 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1126 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1127 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1128 1129 /* finddev.c */ 1130 extern char *ext2fs_find_block_device(dev_t device); 1131 1132 /* flushb.c */ 1133 extern errcode_t ext2fs_sync_device(int fd, int flushb); 1134 1135 /* freefs.c */ 1136 extern void ext2fs_free(ext2_filsys fs); 1137 extern void ext2fs_free_dblist(ext2_dblist dblist); 1138 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1139 extern void ext2fs_u32_list_free(ext2_u32_list bb); 1140 1141 /* gen_bitmap.c */ 1142 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1143 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1144 __u32 start, __u32 end, 1145 __u32 real_end, 1146 const char *descr, char *init_map, 1147 ext2fs_generic_bitmap *ret); 1148 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1149 __u32 end, 1150 __u32 real_end, 1151 const char *descr, 1152 ext2fs_generic_bitmap *ret); 1153 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1154 ext2fs_generic_bitmap *dest); 1155 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1156 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1157 errcode_t magic, 1158 errcode_t neq, 1159 ext2_ino_t end, 1160 ext2_ino_t *oend); 1161 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1162 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1163 __u32 new_end, 1164 __u32 new_real_end, 1165 ext2fs_generic_bitmap bmap); 1166 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1167 ext2fs_generic_bitmap bm1, 1168 ext2fs_generic_bitmap bm2); 1169 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1170 errcode_t magic, 1171 __u32 start, __u32 num, 1172 void *out); 1173 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1174 errcode_t magic, 1175 __u32 start, __u32 num, 1176 void *in); 1177 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap, 1178 __u32 start, __u32 end, 1179 __u32 *out); 1180 1181 /* gen_bitmap64.c */ 1182 1183 /* Generate and print bitmap usage statistics */ 1184 #define BMAP_STATS 1185 1186 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1187 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1188 int type, __u64 start, __u64 end, 1189 __u64 real_end, 1190 const char *descr, 1191 ext2fs_generic_bitmap *ret); 1192 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1193 ext2fs_generic_bitmap *dest); 1194 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1195 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1196 errcode_t neq, 1197 __u64 end, __u64 *oend); 1198 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1199 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1200 __u64 new_end, 1201 __u64 new_real_end); 1202 errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1203 ext2fs_generic_bitmap bm1, 1204 ext2fs_generic_bitmap bm2); 1205 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1206 __u64 start, unsigned int num, 1207 void *out); 1208 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1209 __u64 start, unsigned int num, 1210 void *in); 1211 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1212 ext2fs_block_bitmap *bitmap); 1213 1214 /* getsize.c */ 1215 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1216 blk_t *retblocks); 1217 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1218 blk64_t *retblocks); 1219 1220 /* getsectsize.c */ 1221 extern int ext2fs_get_dio_alignment(int fd); 1222 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1223 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1224 1225 /* i_block.c */ 1226 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1227 blk64_t num_blocks); 1228 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1229 blk64_t num_blocks); 1230 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1231 1232 /* imager.c */ 1233 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1234 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1235 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1236 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1237 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1238 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1239 1240 /* ind_block.c */ 1241 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1242 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1243 1244 /* initialize.c */ 1245 extern errcode_t ext2fs_initialize(const char *name, int flags, 1246 struct ext2_super_block *param, 1247 io_manager manager, ext2_filsys *ret_fs); 1248 1249 /* icount.c */ 1250 extern void ext2fs_free_icount(ext2_icount_t icount); 1251 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1252 int flags, ext2_icount_t *ret); 1253 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1254 unsigned int size, 1255 ext2_icount_t hint, ext2_icount_t *ret); 1256 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1257 unsigned int size, 1258 ext2_icount_t *ret); 1259 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1260 __u16 *ret); 1261 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1262 __u16 *ret); 1263 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1264 __u16 *ret); 1265 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1266 __u16 count); 1267 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1268 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1269 1270 /* inline.c */ 1271 1272 extern errcode_t ext2fs_get_memalign(unsigned long size, 1273 unsigned long align, void *ptr); 1274 1275 /* inode.c */ 1276 extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1277 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1278 ext2_ino_t *ino, 1279 struct ext2_inode *inode, 1280 int bufsize); 1281 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1282 ext2_inode_scan *ret_scan); 1283 extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1284 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1285 struct ext2_inode *inode); 1286 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1287 int group); 1288 extern void ext2fs_set_inode_callback 1289 (ext2_inode_scan scan, 1290 errcode_t (*done_group)(ext2_filsys fs, 1291 ext2_inode_scan scan, 1292 dgrp_t group, 1293 void * priv_data), 1294 void *done_group_data); 1295 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1296 int clear_flags); 1297 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1298 struct ext2_inode * inode, 1299 int bufsize); 1300 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1301 struct ext2_inode * inode); 1302 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1303 struct ext2_inode * inode, 1304 int bufsize); 1305 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1306 struct ext2_inode * inode); 1307 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1308 struct ext2_inode * inode); 1309 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1310 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1311 1312 /* inode_io.c */ 1313 extern io_manager inode_io_manager; 1314 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1315 char **name); 1316 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1317 struct ext2_inode *inode, 1318 char **name); 1319 1320 /* ismounted.c */ 1321 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1322 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1323 char *mtpt, int mtlen); 1324 1325 /* punch.c */ 1326 /* 1327 * NOTE: This function removes from an inode the blocks "start", "end", and 1328 * every block in between. 1329 */ 1330 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1331 struct ext2_inode *inode, 1332 char *block_buf, blk64_t start, 1333 blk64_t end); 1334 1335 /* namei.c */ 1336 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1337 int namelen, char *buf, ext2_ino_t *inode); 1338 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1339 const char *name, ext2_ino_t *inode); 1340 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1341 const char *name, ext2_ino_t *inode); 1342 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1343 ext2_ino_t inode, ext2_ino_t *res_inode); 1344 1345 /* native.c */ 1346 int ext2fs_native_flag(void); 1347 1348 /* newdir.c */ 1349 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1350 ext2_ino_t parent_ino, char **block); 1351 1352 /* mkdir.c */ 1353 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1354 const char *name); 1355 1356 /* mkjournal.c */ 1357 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1358 blk_t *ret_blk, int *ret_count); 1359 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1360 blk64_t *ret_blk, int *ret_count); 1361 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1362 __u32 num_blocks, int flags, 1363 char **ret_jsb); 1364 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1365 ext2_filsys journal_dev); 1366 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1367 int flags); 1368 extern int ext2fs_default_journal_size(__u64 num_blocks); 1369 1370 /* openfs.c */ 1371 extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1372 unsigned int block_size, io_manager manager, 1373 ext2_filsys *ret_fs); 1374 extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1375 int flags, int superblock, 1376 unsigned int block_size, io_manager manager, 1377 ext2_filsys *ret_fs); 1378 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1379 blk64_t group_block, dgrp_t i); 1380 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1381 dgrp_t i); 1382 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1383 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1384 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1385 1386 /* get_pathname.c */ 1387 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1388 char **name); 1389 1390 /* link.c */ 1391 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1392 ext2_ino_t ino, int flags); 1393 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1394 ext2_ino_t ino, int flags); 1395 1396 /* symlink.c */ 1397 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino, 1398 const char *name, char *target); 1399 1400 /* mmp.c */ 1401 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1402 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1403 errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1404 errcode_t ext2fs_mmp_init(ext2_filsys fs); 1405 errcode_t ext2fs_mmp_start(ext2_filsys fs); 1406 errcode_t ext2fs_mmp_update(ext2_filsys fs); 1407 errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1408 unsigned ext2fs_mmp_new_seq(void); 1409 1410 /* read_bb.c */ 1411 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1412 ext2_badblocks_list *bb_list); 1413 1414 /* read_bb_file.c */ 1415 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1416 ext2_badblocks_list *bb_list, 1417 void *priv_data, 1418 void (*invalid)(ext2_filsys fs, 1419 blk_t blk, 1420 char *badstr, 1421 void *priv_data)); 1422 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1423 ext2_badblocks_list *bb_list, 1424 void (*invalid)(ext2_filsys fs, 1425 blk_t blk)); 1426 1427 /* res_gdt.c */ 1428 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1429 1430 /* swapfs.c */ 1431 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1432 int has_header); 1433 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1434 struct ext2_ext_attr_header *from_hdr); 1435 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1436 struct ext2_ext_attr_entry *from_entry); 1437 extern void ext2fs_swap_super(struct ext2_super_block * super); 1438 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1439 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1440 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1441 struct ext2_inode_large *f, int hostorder, 1442 int bufsize); 1443 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1444 struct ext2_inode *f, int hostorder); 1445 extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1446 1447 /* unix_io.c */ 1448 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode); 1449 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1450 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1451 1452 /* valid_blk.c */ 1453 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1454 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, 1455 struct ext2_inode *inode); 1456 1457 /* version.c */ 1458 extern int ext2fs_parse_version_string(const char *ver_string); 1459 extern int ext2fs_get_library_version(const char **ver_string, 1460 const char **date_string); 1461 1462 /* write_bb_file.c */ 1463 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1464 unsigned int flags, 1465 FILE *f); 1466 1467 1468 /* inline functions */ 1469 #ifdef NO_INLINE_FUNCS 1470 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1471 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1472 extern errcode_t ext2fs_get_array(unsigned long count, 1473 unsigned long size, void *ptr); 1474 extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1475 unsigned long size, void *ptr); 1476 extern errcode_t ext2fs_free_mem(void *ptr); 1477 extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1478 unsigned long size, void *ptr); 1479 extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1480 extern void ext2fs_mark_changed(ext2_filsys fs); 1481 extern int ext2fs_test_changed(ext2_filsys fs); 1482 extern void ext2fs_mark_valid(ext2_filsys fs); 1483 extern void ext2fs_unmark_valid(ext2_filsys fs); 1484 extern int ext2fs_test_valid(ext2_filsys fs); 1485 extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1486 extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1487 extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1488 extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1489 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1490 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1491 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1492 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1493 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1494 struct ext2_inode *inode); 1495 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1496 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1497 #endif 1498 1499 /* 1500 * The actual inlined functions definitions themselves... 1501 * 1502 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1503 * functions at all! 1504 */ 1505 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1506 #ifdef INCLUDE_INLINE_FUNCS 1507 #define _INLINE_ extern 1508 #else 1509 #if (__STDC_VERSION__ >= 199901L) 1510 #define _INLINE_ inline 1511 #else 1512 #ifdef __GNUC__ 1513 #define _INLINE_ extern __inline__ 1514 #else /* For Watcom C */ 1515 #define _INLINE_ extern inline 1516 #endif /* __GNUC__ */ 1517 #endif /* __STDC_VERSION__ >= 199901L */ 1518 #endif 1519 1520 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1521 #include <string.h> 1522 /* 1523 * Allocate memory. The 'ptr' arg must point to a pointer. 1524 */ 1525 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1526 { 1527 void *pp; 1528 1529 pp = malloc(size); 1530 if (!pp) 1531 return EXT2_ET_NO_MEMORY; 1532 memcpy(ptr, &pp, sizeof (pp)); 1533 return 0; 1534 } 1535 1536 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1537 { 1538 void *pp; 1539 1540 pp = malloc(size); 1541 if (!pp) 1542 return EXT2_ET_NO_MEMORY; 1543 memset(pp, 0, size); 1544 memcpy(ptr, &pp, sizeof(pp)); 1545 return 0; 1546 } 1547 1548 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1549 { 1550 if (count && (-1UL)/count<size) 1551 return EXT2_ET_NO_MEMORY; 1552 return ext2fs_get_mem(count*size, ptr); 1553 } 1554 1555 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1556 unsigned long size, void *ptr) 1557 { 1558 void *pp; 1559 1560 if (count && (-1UL)/count<size) 1561 return EXT2_ET_NO_MEMORY; 1562 pp = calloc(count, size); 1563 if (!pp) 1564 return EXT2_ET_NO_MEMORY; 1565 memcpy(ptr, &pp, sizeof(pp)); 1566 return 0; 1567 } 1568 1569 /* 1570 * Free memory. The 'ptr' arg must point to a pointer. 1571 */ 1572 _INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1573 { 1574 void *p; 1575 1576 memcpy(&p, ptr, sizeof(p)); 1577 free(p); 1578 p = 0; 1579 memcpy(ptr, &p, sizeof(p)); 1580 return 0; 1581 } 1582 1583 /* 1584 * Resize memory. The 'ptr' arg must point to a pointer. 1585 */ 1586 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1587 unsigned long size, void *ptr) 1588 { 1589 void *p; 1590 1591 /* Use "memcpy" for pointer assignments here to avoid problems 1592 * with C99 strict type aliasing rules. */ 1593 memcpy(&p, ptr, sizeof(p)); 1594 p = realloc(p, size); 1595 if (!p) 1596 return EXT2_ET_NO_MEMORY; 1597 memcpy(ptr, &p, sizeof(p)); 1598 return 0; 1599 } 1600 #endif /* Custom memory routines */ 1601 1602 /* 1603 * Mark a filesystem superblock as dirty 1604 */ 1605 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1606 { 1607 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1608 } 1609 1610 /* 1611 * Mark a filesystem as changed 1612 */ 1613 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1614 { 1615 fs->flags |= EXT2_FLAG_CHANGED; 1616 } 1617 1618 /* 1619 * Check to see if a filesystem has changed 1620 */ 1621 _INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1622 { 1623 return (fs->flags & EXT2_FLAG_CHANGED); 1624 } 1625 1626 /* 1627 * Mark a filesystem as valid 1628 */ 1629 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1630 { 1631 fs->flags |= EXT2_FLAG_VALID; 1632 } 1633 1634 /* 1635 * Mark a filesystem as NOT valid 1636 */ 1637 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1638 { 1639 fs->flags &= ~EXT2_FLAG_VALID; 1640 } 1641 1642 /* 1643 * Check to see if a filesystem is valid 1644 */ 1645 _INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1646 { 1647 return (fs->flags & EXT2_FLAG_VALID); 1648 } 1649 1650 /* 1651 * Mark the inode bitmap as dirty 1652 */ 1653 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1654 { 1655 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1656 } 1657 1658 /* 1659 * Mark the block bitmap as dirty 1660 */ 1661 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1662 { 1663 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1664 } 1665 1666 /* 1667 * Check to see if a filesystem's inode bitmap is dirty 1668 */ 1669 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1670 { 1671 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1672 } 1673 1674 /* 1675 * Check to see if a filesystem's block bitmap is dirty 1676 */ 1677 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1678 { 1679 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1680 } 1681 1682 /* 1683 * Return the group # of a block 1684 */ 1685 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1686 { 1687 return ext2fs_group_of_blk2(fs, blk); 1688 } 1689 /* 1690 * Return the group # of an inode number 1691 */ 1692 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1693 { 1694 return (ino - 1) / fs->super->s_inodes_per_group; 1695 } 1696 1697 /* 1698 * Return the first block (inclusive) in a group 1699 */ 1700 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1701 { 1702 return (blk_t) ext2fs_group_first_block2(fs, group); 1703 } 1704 1705 /* 1706 * Return the last block (inclusive) in a group 1707 */ 1708 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1709 { 1710 return (blk_t) ext2fs_group_last_block2(fs, group); 1711 } 1712 1713 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1714 struct ext2_inode *inode) 1715 { 1716 return (blk_t) ext2fs_inode_data_blocks2(fs, inode); 1717 } 1718 1719 /* 1720 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1721 */ 1722 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1723 { 1724 if (!a) 1725 return 0; 1726 return ((a - 1) / b) + 1; 1727 } 1728 1729 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1730 { 1731 if (!a) 1732 return 0; 1733 return ((a - 1) / b) + 1; 1734 } 1735 1736 #undef _INLINE_ 1737 #endif 1738 1739 #ifdef __cplusplus 1740 } 1741 #endif 1742 1743 #endif /* _EXT2FS_EXT2FS_H */ 1744
