LXR busybox/e2fsprogs/old_e2fsprogs/ext2fs/ext2fs.h

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * ext2fs.h --- ext2fs
   4 *
   5 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
   6 *
   7 * %Begin-Header%
   8 * This file may be redistributed under the terms of the GNU Public
   9 * License.
  10 * %End-Header%
  11 */
  12#ifndef EXT2FS_EXT2FS_H
  13#define EXT2FS_EXT2FS_H 1
  14
  15
  16#define EXT2FS_ATTR(x)
  17
  18#ifdef __cplusplus
  19extern "C" {
  20#endif
  21
  22/*
  23 * Where the master copy of the superblock is located, and how big
  24 * superblocks are supposed to be.  We define SUPERBLOCK_SIZE because
  25 * the size of the superblock structure is not necessarily trustworthy
  26 * (some versions have the padding set up so that the superblock is
  27 * 1032 bytes long).
  28 */
  29#define SUPERBLOCK_OFFSET       1024
  30#define SUPERBLOCK_SIZE         1024
  31
  32/*
  33 * The last ext2fs revision level that this version of the library is
  34 * able to support.
  35 */
  36#define EXT2_LIB_CURRENT_REV    EXT2_DYNAMIC_REV
  37
  38#ifdef HAVE_SYS_TYPES_H
  39#include <sys/types.h>
  40#endif
  41
  42#include <stdio.h>
  43#include <stdlib.h>
  44
  45#include "ext2_types.h"
  46#include "ext2_fs.h"
  47
  48typedef __u32           ext2_ino_t;
  49typedef __u32           blk_t;
  50typedef __u32           dgrp_t;
  51typedef __u32           ext2_off_t;
  52typedef __s64           e2_blkcnt_t;
  53typedef __u32           ext2_dirhash_t;
  54
  55#include "ext2_io.h"
  56#include "ext2_err.h"
  57
  58typedef struct struct_ext2_filsys *ext2_filsys;
  59
  60struct ext2fs_struct_generic_bitmap {
  61        errcode_t       magic;
  62        ext2_filsys     fs;
  63        __u32           start, end;
  64        __u32           real_end;
  65        char    *       description;
  66        char    *       bitmap;
  67        errcode_t       base_error_code;
  68        __u32           reserved[7];
  69};
  70
  71#define EXT2FS_MARK_ERROR       0
  72#define EXT2FS_UNMARK_ERROR     1
  73#define EXT2FS_TEST_ERROR       2
  74
  75typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
  76typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
  77typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
  78
  79#define EXT2_FIRST_INODE(s)     EXT2_FIRST_INO(s)
  80
  81/*
  82 * badblocks list definitions
  83 */
  84
  85typedef struct ext2_struct_u32_list *ext2_badblocks_list;
  86typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
  87
  88typedef struct ext2_struct_u32_list *ext2_u32_list;
  89typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
  90
  91/* old */
  92typedef struct ext2_struct_u32_list *badblocks_list;
  93typedef struct ext2_struct_u32_iterate *badblocks_iterate;
  94
  95#define BADBLOCKS_FLAG_DIRTY    1
  96
  97/*
  98 * ext2_dblist structure and abstractions (see dblist.c)
  99 */
 100struct ext2_db_entry {
 101        ext2_ino_t      ino;
 102        blk_t   blk;
 103        int     blockcnt;
 104};
 105
 106typedef struct ext2_struct_dblist *ext2_dblist;
 107
 108#define DBLIST_ABORT    1
 109
 110/*
 111 * ext2_fileio definitions
 112 */
 113
 114#define EXT2_FILE_WRITE         0x0001
 115#define EXT2_FILE_CREATE        0x0002
 116
 117#define EXT2_FILE_MASK          0x00FF
 118
 119#define EXT2_FILE_BUF_DIRTY     0x4000
 120#define EXT2_FILE_BUF_VALID     0x2000
 121
 122typedef struct ext2_file *ext2_file_t;
 123
 124#define EXT2_SEEK_SET   0
 125#define EXT2_SEEK_CUR   1
 126#define EXT2_SEEK_END   2
 127
 128/*
 129 * Flags for the ext2_filsys structure and for ext2fs_open()
 130 */
 131#define EXT2_FLAG_RW                    0x01
 132#define EXT2_FLAG_CHANGED               0x02
 133#define EXT2_FLAG_DIRTY                 0x04
 134#define EXT2_FLAG_VALID                 0x08
 135#define EXT2_FLAG_IB_DIRTY              0x10
 136#define EXT2_FLAG_BB_DIRTY              0x20
 137#define EXT2_FLAG_SWAP_BYTES            0x40
 138#define EXT2_FLAG_SWAP_BYTES_READ       0x80
 139#define EXT2_FLAG_SWAP_BYTES_WRITE      0x100
 140#define EXT2_FLAG_MASTER_SB_ONLY        0x200
 141#define EXT2_FLAG_FORCE                 0x400
 142#define EXT2_FLAG_SUPER_ONLY            0x800
 143#define EXT2_FLAG_JOURNAL_DEV_OK        0x1000
 144#define EXT2_FLAG_IMAGE_FILE            0x2000
 145
 146/*
 147 * Special flag in the ext2 inode i_flag field that means that this is
 148 * a new inode.  (So that ext2_write_inode() can clear extra fields.)
 149 */
 150#define EXT2_NEW_INODE_FL       0x80000000
 151
 152/*
 153 * Flags for mkjournal
 154 *
 155 * EXT2_MKJOURNAL_V1_SUPER      Make a (deprecated) V1 journal superblock
 156 */
 157#define EXT2_MKJOURNAL_V1_SUPER 0x0000001
 158
 159struct struct_ext2_filsys {
 160        errcode_t                       magic;
 161        io_channel                      io;
 162        int                             flags;
 163        char *                          device_name;
 164        struct ext2_super_block *       super;
 165        unsigned int                    blocksize;
 166        int                             fragsize;
 167        dgrp_t                          group_desc_count;
 168        unsigned long                   desc_blocks;
 169        struct ext2_group_desc *        group_desc;
 170        int                             inode_blocks_per_group;
 171        ext2fs_inode_bitmap             inode_map;
 172        ext2fs_block_bitmap             block_map;
 173        errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
 174        errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
 175        errcode_t (*write_bitmaps)(ext2_filsys fs);
 176        errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
 177                                struct ext2_inode *inode);
 178        errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
 179                                struct ext2_inode *inode);
 180        ext2_badblocks_list             badblocks;
 181        ext2_dblist                     dblist;
 182        __u32                           stride; /* for mke2fs */
 183        struct ext2_super_block *       orig_super;
 184        struct ext2_image_hdr *         image_header;
 185        __u32                           umask;
 186        /*
 187         * Reserved for future expansion
 188         */
 189        __u32                           reserved[8];
 190
 191        /*
 192         * Reserved for the use of the calling application.
 193         */
 194        void *                          priv_data;
 195
 196        /*
 197         * Inode cache
 198         */
 199        struct ext2_inode_cache         *icache;
 200        io_channel                      image_io;
 201};
 202
 203#include "bitops.h"
 204
 205/*
 206 * Return flags for the block iterator functions
 207 */
 208#define BLOCK_CHANGED   1
 209#define BLOCK_ABORT     2
 210#define BLOCK_ERROR     4
 211
 212/*
 213 * Block interate flags
 214 *
 215 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
 216 * function should be called on blocks where the block number is zero.
 217 * This is used by ext2fs_expand_dir() to be able to add a new block
 218 * to an inode.  It can also be used for programs that want to be able
 219 * to deal with files that contain "holes".
 220 *
 221 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
 222 * indirect, doubly indirect, etc. blocks should be called after all
 223 * of the blocks containined in the indirect blocks are processed.
 224 * This is useful if you are going to be deallocating blocks from an
 225 * inode.
 226 *
 227 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
 228 * called for data blocks only.
 229 *
 230 * BLOCK_FLAG_NO_LARGE is for internal use only.  It informs
 231 * ext2fs_block_iterate2 that large files won't be accepted.
 232 */
 233#define BLOCK_FLAG_APPEND       1
 234#define BLOCK_FLAG_HOLE         1
 235#define BLOCK_FLAG_DEPTH_TRAVERSE       2
 236#define BLOCK_FLAG_DATA_ONLY    4
 237
 238#define BLOCK_FLAG_NO_LARGE     0x1000
 239
 240/*
 241 * Magic "block count" return values for the block iterator function.
 242 */
 243#define BLOCK_COUNT_IND         (-1)
 244#define BLOCK_COUNT_DIND        (-2)
 245#define BLOCK_COUNT_TIND        (-3)
 246#define BLOCK_COUNT_TRANSLATOR  (-4)
 247
 248#if 0
 249/*
 250 * Flags for ext2fs_move_blocks
 251 */
 252#define EXT2_BMOVE_GET_DBLIST   0x0001
 253#define EXT2_BMOVE_DEBUG        0x0002
 254#endif
 255
 256/*
 257 * Flags for directory block reading and writing functions
 258 */
 259#define EXT2_DIRBLOCK_V2_STRUCT 0x0001
 260
 261/*
 262 * Return flags for the directory iterator functions
 263 */
 264#define DIRENT_CHANGED  1
 265#define DIRENT_ABORT    2
 266#define DIRENT_ERROR    3
 267
 268/*
 269 * Directory iterator flags
 270 */
 271
 272#define DIRENT_FLAG_INCLUDE_EMPTY       1
 273#define DIRENT_FLAG_INCLUDE_REMOVED     2
 274
 275#define DIRENT_DOT_FILE         1
 276#define DIRENT_DOT_DOT_FILE     2
 277#define DIRENT_OTHER_FILE       3
 278#define DIRENT_DELETED_FILE     4
 279
 280/*
 281 * Inode scan definitions
 282 */
 283typedef struct ext2_struct_inode_scan *ext2_inode_scan;
 284
 285/*
 286 * ext2fs_scan flags
 287 */
 288#define EXT2_SF_CHK_BADBLOCKS   0x0001
 289#define EXT2_SF_BAD_INODE_BLK   0x0002
 290#define EXT2_SF_BAD_EXTRA_BYTES 0x0004
 291#define EXT2_SF_SKIP_MISSING_ITABLE     0x0008
 292
 293/*
 294 * ext2fs_check_if_mounted flags
 295 */
 296#define EXT2_MF_MOUNTED         1
 297#define EXT2_MF_ISROOT          2
 298#define EXT2_MF_READONLY        4
 299#define EXT2_MF_SWAP            8
 300#define EXT2_MF_BUSY            16
 301
 302/*
 303 * Ext2/linux mode flags.  We define them here so that we don't need
 304 * to depend on the OS's sys/stat.h, since we may be compiling on a
 305 * non-Linux system.
 306 */
 307#define LINUX_S_IFMT  00170000
 308#define LINUX_S_IFSOCK 0140000
 309#define LINUX_S_IFLNK    0120000
 310#define LINUX_S_IFREG  0100000
 311#define LINUX_S_IFBLK  0060000
 312#define LINUX_S_IFDIR  0040000
 313#define LINUX_S_IFCHR  0020000
 314#define LINUX_S_IFIFO  0010000
 315#define LINUX_S_ISUID  0004000
 316#define LINUX_S_ISGID  0002000
 317#define LINUX_S_ISVTX  0001000
 318
 319#define LINUX_S_IRWXU 00700
 320#define LINUX_S_IRUSR 00400
 321#define LINUX_S_IWUSR 00200
 322#define LINUX_S_IXUSR 00100
 323
 324#define LINUX_S_IRWXG 00070
 325#define LINUX_S_IRGRP 00040
 326#define LINUX_S_IWGRP 00020
 327#define LINUX_S_IXGRP 00010
 328
 329#define LINUX_S_IRWXO 00007
 330#define LINUX_S_IROTH 00004
 331#define LINUX_S_IWOTH 00002
 332#define LINUX_S_IXOTH 00001
 333
 334#define LINUX_S_ISLNK(m)        (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
 335#define LINUX_S_ISREG(m)        (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
 336#define LINUX_S_ISDIR(m)        (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
 337#define LINUX_S_ISCHR(m)        (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
 338#define LINUX_S_ISBLK(m)        (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
 339#define LINUX_S_ISFIFO(m)       (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
 340#define LINUX_S_ISSOCK(m)       (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
 341
 342/*
 343 * ext2 size of an inode
 344 */
 345#define EXT2_I_SIZE(i)  ((i)->i_size | ((__u64) (i)->i_size_high << 32))
 346
 347/*
 348 * ext2_icount_t abstraction
 349 */
 350#define EXT2_ICOUNT_OPT_INCREMENT       0x01
 351
 352typedef struct ext2_icount *ext2_icount_t;
 353
 354/*
 355 * Flags for ext2fs_bmap
 356 */
 357#define BMAP_ALLOC      0x0001
 358#define BMAP_SET        0x0002
 359
 360/*
 361 * Flags for imager.c functions
 362 */
 363#define IMAGER_FLAG_INODEMAP    1
 364#define IMAGER_FLAG_SPARSEWRITE 2
 365
 366/*
 367 * For checking structure magic numbers...
 368 */
 369
 370#define EXT2_CHECK_MAGIC(struct, code) \
 371          if ((struct)->magic != (code)) return (code)
 372
 373
 374/*
 375 * For ext2 compression support
 376 */
 377#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
 378#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
 379
 380/*
 381 * Features supported by this version of the library
 382 */
 383#define EXT2_LIB_FEATURE_COMPAT_SUPP    (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
 384                                         EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
 385                                         EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
 386                                         EXT2_FEATURE_COMPAT_RESIZE_INODE|\
 387                                         EXT2_FEATURE_COMPAT_DIR_INDEX|\
 388                                         EXT2_FEATURE_COMPAT_EXT_ATTR)
 389
 390/* This #ifdef is temporary until compression is fully supported */
 391#ifdef ENABLE_COMPRESSION
 392#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
 393/* If the below warning bugs you, then have
 394   `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
 395   environment at configure time. */
 396 #warning "Compression support is experimental"
 397#endif
 398#define EXT2_LIB_FEATURE_INCOMPAT_SUPP  (EXT2_FEATURE_INCOMPAT_FILETYPE|\
 399                                         EXT2_FEATURE_INCOMPAT_COMPRESSION|\
 400                                         EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
 401                                         EXT2_FEATURE_INCOMPAT_META_BG|\
 402                                         EXT3_FEATURE_INCOMPAT_RECOVER)
 403#else
 404#define EXT2_LIB_FEATURE_INCOMPAT_SUPP  (EXT2_FEATURE_INCOMPAT_FILETYPE|\
 405                                         EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
 406                                         EXT2_FEATURE_INCOMPAT_META_BG|\
 407                                         EXT3_FEATURE_INCOMPAT_RECOVER)
 408#endif
 409#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
 410                                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
 411/*
 412 * function prototypes
 413 */
 414
 415/* alloc.c */
 416extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
 417                                  ext2fs_inode_bitmap map, ext2_ino_t *ret);
 418extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 419                                  ext2fs_block_bitmap map, blk_t *ret);
 420extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
 421                                        blk_t finish, int num,
 422                                        ext2fs_block_bitmap map,
 423                                        blk_t *ret);
 424extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
 425                                    char *block_buf, blk_t *ret);
 426
 427/* alloc_sb.c */
 428extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
 429                                        dgrp_t group,
 430                                        ext2fs_block_bitmap bmap);
 431
 432/* alloc_stats.c */
 433void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
 434void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
 435                               int inuse, int isdir);
 436void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
 437
 438/* alloc_tables.c */
 439extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
 440extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
 441                                             ext2fs_block_bitmap bmap);
 442
 443/* badblocks.c */
 444extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
 445extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
 446extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
 447extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
 448extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
 449                                               ext2_u32_iterate *ret);
 450extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
 451extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
 452extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
 453extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
 454
 455extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
 456                                            int size);
 457extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
 458                                           blk_t blk);
 459extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
 460                                    blk_t blk);
 461extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
 462extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
 463extern errcode_t
 464        ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
 465                                            ext2_badblocks_iterate *ret);
 466extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
 467                                         blk_t *blk);
 468extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
 469extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
 470                                       ext2_badblocks_list *dest);
 471extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
 472                                  ext2_badblocks_list bb2);
 473extern int ext2fs_u32_list_count(ext2_u32_list bb);
 474
 475/* bb_compat */
 476extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
 477extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
 478extern int badblocks_list_test(badblocks_list bb, blk_t blk);
 479extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
 480                                              badblocks_iterate *ret);
 481extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
 482extern void badblocks_list_iterate_end(badblocks_iterate iter);
 483extern void badblocks_list_free(badblocks_list bb);
 484
 485/* bb_inode.c */
 486extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
 487                                        ext2_badblocks_list bb_list);
 488
 489/* bitmaps.c */
 490extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
 491extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
 492extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
 493extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
 494extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
 495                                                __u32 end,
 496                                                __u32 real_end,
 497                                                const char *descr,
 498                                                ext2fs_generic_bitmap *ret);
 499extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
 500                                              const char *descr,
 501                                              ext2fs_block_bitmap *ret);
 502extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
 503                                              const char *descr,
 504                                              ext2fs_inode_bitmap *ret);
 505extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
 506                                               ext2_ino_t end, ext2_ino_t *oend);
 507extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
 508                                               blk_t end, blk_t *oend);
 509extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
 510extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
 511extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
 512extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
 513
 514/* block.c */
 515extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
 516                                      ext2_ino_t        ino,
 517                                      int       flags,
 518                                      char *block_buf,
 519                                      int (*func)(ext2_filsys fs,
 520                                                  blk_t *blocknr,
 521                                                  int   blockcnt,
 522                                                  void  *priv_data),
 523                                      void *priv_data);
 524errcode_t ext2fs_block_iterate2(ext2_filsys fs,
 525                                ext2_ino_t      ino,
 526                                int     flags,
 527                                char *block_buf,
 528                                int (*func)(ext2_filsys fs,
 529                                            blk_t       *blocknr,
 530                                            e2_blkcnt_t blockcnt,
 531                                            blk_t       ref_blk,
 532                                            int         ref_offset,
 533                                            void        *priv_data),
 534                                void *priv_data);
 535
 536/* bmap.c */
 537extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
 538                             struct ext2_inode *inode,
 539                             char *block_buf, int bmap_flags,
 540                             blk_t block, blk_t *phys_blk);
 541
 542
 543#if 0
 544/* bmove.c */
 545extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
 546                                    ext2fs_block_bitmap reserve,
 547                                    ext2fs_block_bitmap alloc_map,
 548                                    int flags);
 549#endif
 550
 551/* check_desc.c */
 552extern errcode_t ext2fs_check_desc(ext2_filsys fs);
 553
 554/* closefs.c */
 555extern errcode_t ext2fs_close(ext2_filsys fs);
 556extern errcode_t ext2fs_flush(ext2_filsys fs);
 557extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
 558extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
 559                                    dgrp_t group,
 560                                    blk_t *ret_super_blk,
 561                                    blk_t *ret_old_desc_blk,
 562                                    blk_t *ret_new_desc_blk,
 563                                    int *ret_meta_bg);
 564extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
 565
 566/* cmp_bitmaps.c */
 567extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
 568                                             ext2fs_block_bitmap bm2);
 569extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
 570                                             ext2fs_inode_bitmap bm2);
 571
 572/* dblist.c */
 573
 574extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
 575extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
 576extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
 577                                      blk_t blk, int blockcnt);
 578extern void ext2fs_dblist_sort(ext2_dblist dblist,
 579                               int (*sortfunc)(const void *,
 580                                                           const void *));
 581extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
 582        int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
 583                    void        *priv_data),
 584       void *priv_data);
 585extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
 586                                      blk_t blk, int blockcnt);
 587extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
 588                                    ext2_dblist *dest);
 589extern int ext2fs_dblist_count(ext2_dblist dblist);
 590
 591/* dblist_dir.c */
 592extern errcode_t
 593        ext2fs_dblist_dir_iterate(ext2_dblist dblist,
 594                                  int   flags,
 595                                  char  *block_buf,
 596                                  int (*func)(ext2_ino_t        dir,
 597                                              int               entry,
 598                                              struct ext2_dir_entry *dirent,
 599                                              int       offset,
 600                                              int       blocksize,
 601                                              char      *buf,
 602                                              void      *priv_data),
 603                                  void *priv_data);
 604
 605/* dirblock.c */
 606extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
 607                                       void *buf);
 608extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
 609                                        void *buf, int flags);
 610extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
 611                                        void *buf);
 612extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
 613                                         void *buf, int flags);
 614
 615/* dirhash.c */
 616extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
 617                                const __u32 *seed,
 618                                ext2_dirhash_t *ret_hash,
 619                                ext2_dirhash_t *ret_minor_hash);
 620
 621
 622/* dir_iterate.c */
 623extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
 624                              ext2_ino_t dir,
 625                              int flags,
 626                              char *block_buf,
 627                              int (*func)(struct ext2_dir_entry *dirent,
 628                                          int   offset,
 629                                          int   blocksize,
 630                                          char  *buf,
 631                                          void  *priv_data),
 632                              void *priv_data);
 633extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
 634                              ext2_ino_t dir,
 635                              int flags,
 636                              char *block_buf,
 637                              int (*func)(ext2_ino_t    dir,
 638                                          int   entry,
 639                                          struct ext2_dir_entry *dirent,
 640                                          int   offset,
 641                                          int   blocksize,
 642                                          char  *buf,
 643                                          void  *priv_data),
 644                              void *priv_data);
 645
 646/* dupfs.c */
 647extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
 648
 649/* expanddir.c */
 650extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
 651
 652/* ext_attr.c */
 653extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
 654extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
 655                                       void *buf);
 656extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
 657                                           char *block_buf,
 658                                           int adjust, __u32 *newcount);
 659
 660/* fileio.c */
 661extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
 662                                   struct ext2_inode *inode,
 663                                   int flags, ext2_file_t *ret);
 664extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
 665                                  int flags, ext2_file_t *ret);
 666extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
 667extern errcode_t ext2fs_file_close(ext2_file_t file);
 668extern errcode_t ext2fs_file_flush(ext2_file_t file);
 669extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
 670                                  unsigned int wanted, unsigned int *got);
 671extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
 672                                   unsigned int nbytes, unsigned int *written);
 673extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
 674                                   int whence, __u64 *ret_pos);
 675extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
 676                                   int whence, ext2_off_t *ret_pos);
 677errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
 678extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
 679extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
 680
 681/* finddev.c */
 682extern char *ext2fs_find_block_device(dev_t device);
 683
 684/* flushb.c */
 685extern errcode_t ext2fs_sync_device(int fd, int flushb);
 686
 687/* freefs.c */
 688extern void ext2fs_free(ext2_filsys fs);
 689extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
 690extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
 691extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
 692extern void ext2fs_free_dblist(ext2_dblist dblist);
 693extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
 694extern void ext2fs_u32_list_free(ext2_u32_list bb);
 695
 696/* getsize.c */
 697extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
 698                                        blk_t *retblocks);
 699
 700/* getsectsize.c */
 701errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
 702
 703/* imager.c */
 704extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
 705extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
 706extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
 707extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
 708extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
 709extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
 710
 711/* ind_block.c */
 712errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
 713errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
 714
 715/* initialize.c */
 716extern errcode_t ext2fs_initialize(const char *name, int flags,
 717                                   struct ext2_super_block *param,
 718                                   io_manager manager, ext2_filsys *ret_fs);
 719
 720/* icount.c */
 721extern void ext2fs_free_icount(ext2_icount_t icount);
 722extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
 723                                       unsigned int size,
 724                                       ext2_icount_t hint, ext2_icount_t *ret);
 725extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
 726                                      unsigned int size,
 727                                      ext2_icount_t *ret);
 728extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
 729                                     __u16 *ret);
 730extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
 731                                         __u16 *ret);
 732extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
 733                                         __u16 *ret);
 734extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
 735                                     __u16 count);
 736extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
 737errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
 738
 739/* inode.c */
 740extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
 741extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
 742                                            ext2_ino_t *ino,
 743                                            struct ext2_inode *inode,
 744                                            int bufsize);
 745extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
 746                                  ext2_inode_scan *ret_scan);
 747extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
 748extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
 749                               struct ext2_inode *inode);
 750extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
 751                                                   int  group);
 752extern void ext2fs_set_inode_callback
 753        (ext2_inode_scan scan,
 754         errcode_t (*done_group)(ext2_filsys fs,
 755                                 dgrp_t group,
 756                                 void * priv_data),
 757         void *done_group_data);
 758extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
 759                                   int clear_flags);
 760extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
 761                                        struct ext2_inode * inode,
 762                                        int bufsize);
 763extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
 764                            struct ext2_inode * inode);
 765extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
 766                                         struct ext2_inode * inode,
 767                                         int bufsize);
 768extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
 769                            struct ext2_inode * inode);
 770extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
 771                            struct ext2_inode * inode);
 772extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
 773extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
 774
 775/* inode_io.c */
 776extern io_manager inode_io_manager;
 777extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
 778                                        char **name);
 779extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
 780                                         struct ext2_inode *inode,
 781                                         char **name);
 782
 783/* ismounted.c */
 784extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
 785extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
 786                                          char *mtpt, int mtlen);
 787
 788/* namei.c */
 789extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
 790                         int namelen, char *buf, ext2_ino_t *inode);
 791extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
 792                        const char *name, ext2_ino_t *inode);
 793errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
 794                              const char *name, ext2_ino_t *inode);
 795extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
 796                        ext2_ino_t inode, ext2_ino_t *res_inode);
 797
 798/* native.c */
 799int ext2fs_native_flag(void);
 800
 801/* newdir.c */
 802extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
 803                                ext2_ino_t parent_ino, char **block);
 804
 805/* mkdir.c */
 806extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
 807                              const char *name);
 808
 809/* mkjournal.c */
 810extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
 811                                                  __u32 size, int flags,
 812                                                  char  **ret_jsb);
 813extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
 814                                           ext2_filsys journal_dev);
 815extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
 816                                          int flags);
 817
 818/* openfs.c */
 819extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
 820                             unsigned int block_size, io_manager manager,
 821                             ext2_filsys *ret_fs);
 822extern errcode_t ext2fs_open2(const char *name, const char *io_options,
 823                              int flags, int superblock,
 824                              unsigned int block_size, io_manager manager,
 825                              ext2_filsys *ret_fs);
 826extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
 827                                         dgrp_t i);
 828errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
 829errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
 830errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
 831
 832/* get_pathname.c */
 833extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
 834                               char **name);
 835
 836/* link.c */
 837errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
 838                      ext2_ino_t ino, int flags);
 839errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
 840                        ext2_ino_t ino, int flags);
 841
 842/* read_bb.c */
 843extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
 844                                      ext2_badblocks_list *bb_list);
 845
 846/* read_bb_file.c */
 847extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
 848                                      ext2_badblocks_list *bb_list,
 849                                      void *priv_data,
 850                                      void (*invalid)(ext2_filsys fs,
 851                                                      blk_t blk,
 852                                                      char *badstr,
 853                                                      void *priv_data));
 854extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
 855                                     ext2_badblocks_list *bb_list,
 856                                     void (*invalid)(ext2_filsys fs,
 857                                                     blk_t blk));
 858
 859/* res_gdt.c */
 860extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
 861
 862/* rs_bitmap.c */
 863extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
 864                                              __u32 new_real_end,
 865                                              ext2fs_generic_bitmap bmap);
 866extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
 867                                            ext2fs_inode_bitmap bmap);
 868extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
 869                                            ext2fs_block_bitmap bmap);
 870extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
 871                                    ext2fs_generic_bitmap *dest);
 872
 873/* swapfs.c */
 874extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
 875                                 int has_header);
 876extern void ext2fs_swap_super(struct ext2_super_block * super);
 877extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
 878extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
 879                                   struct ext2_inode_large *f, int hostorder,
 880                                   int bufsize);
 881extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
 882                              struct ext2_inode *f, int hostorder);
 883
 884/* valid_blk.c */
 885extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
 886
 887/* version.c */
 888extern int ext2fs_parse_version_string(const char *ver_string);
 889extern int ext2fs_get_library_version(const char **ver_string,
 890                                      const char **date_string);
 891
 892/* write_bb_file.c */
 893extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
 894                                      unsigned int flags,
 895                                      FILE *f);
 896
 897
 898/* inline functions */
 899extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
 900extern errcode_t ext2fs_free_mem(void *ptr);
 901extern errcode_t ext2fs_resize_mem(unsigned long old_size,
 902                                   unsigned long size, void *ptr);
 903extern void ext2fs_mark_super_dirty(ext2_filsys fs);
 904extern void ext2fs_mark_changed(ext2_filsys fs);
 905extern int ext2fs_test_changed(ext2_filsys fs);
 906extern void ext2fs_mark_valid(ext2_filsys fs);
 907extern void ext2fs_unmark_valid(ext2_filsys fs);
 908extern int ext2fs_test_valid(ext2_filsys fs);
 909extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
 910extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
 911extern int ext2fs_test_ib_dirty(ext2_filsys fs);
 912extern int ext2fs_test_bb_dirty(ext2_filsys fs);
 913extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
 914extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
 915extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
 916                                      struct ext2_inode *inode);
 917
 918#ifdef __cplusplus
 919}
 920#endif
 921
 922#endif
 923