e2fsck/e2fsck.h

   1 /*
   2  * e2fsck.h
   3  *
   4  * Copyright (C) 1993, 1994 Theodore Ts'o.  This file may be
   5  * redistributed under the terms of the GNU Public License.
   6  *
   7  */
   8
   9 #ifndef _E2FSCK_H
  10 #define _E2FSCK_H
  11
  12 #include <stdio.h>
  13 #include <string.h>
  14 #ifdef HAVE_UNISTD_H
  15 #include <unistd.h>
  16 #endif
  17 #include <stdlib.h>
  18 #include <time.h>
  19 #ifdef HAVE_SYS_TYPES_H
  20 #include <sys/types.h>
  21 #endif
  22 #ifdef HAVE_SYS_TIME_H
  23 #include <sys/time.h>
  24 #endif
  25 #ifdef HAVE_SETJMP_H
  26 #include <setjmp.h>
  27 #endif
  28
  29 #if EXT2_FLAT_INCLUDES
  30 #include "ext2_fs.h"
  31 #include "ext2fs.h"
  32 #include "blkid.h"
  33 #else
  34 #include "ext2fs/ext2_fs.h"
  35 #include "ext2fs/ext2fs.h"
  36 #include "blkid/blkid.h"
  37 #endif
  38
  39 #include "support/profile.h"
  40 #include "support/prof_err.h"
  41
  42 #ifdef ENABLE_NLS
  43 #include <libintl.h>
  44 #include <locale.h>
  45 #define _(a) (gettext (a))
  46 #ifdef gettext_noop
  47 #define N_(a) gettext_noop (a)
  48 #else
  49 #define N_(a) (a)
  50 #endif
  51 #define P_(singular, plural, n) (ngettext (singular, plural, n))
  52 #ifndef NLS_CAT_NAME
  53 #define NLS_CAT_NAME "e2fsprogs"
  54 #endif
  55 #ifndef LOCALEDIR
  56 #define LOCALEDIR "/usr/share/locale"
  57 #endif
  58 #else
  59 #define _(a) (a)
  60 #define N_(a) a
  61 #define P_(singular, plural, n) ((n) == 1 ? (singular) : (plural))
  62 #endif
  63
  64 #ifdef __GNUC__
  65 #define E2FSCK_ATTR(x) __attribute__(x)
  66 #else
  67 #define E2FSCK_ATTR(x)
  68 #endif
  69
  70 #include "support/quotaio.h"
  71
  72 /*
  73  * Exit codes used by fsck-type programs
  74  */
  75 #define FSCK_OK          0      /* No errors */
  76 #define FSCK_NONDESTRUCT 1      /* File system errors corrected */
  77 #define FSCK_REBOOT      2      /* System should be rebooted */
  78 #define FSCK_UNCORRECTED 4      /* File system errors left uncorrected */
  79 #define FSCK_ERROR       8      /* Operational error */
  80 #define FSCK_USAGE       16     /* Usage or syntax error */
  81 #define FSCK_CANCELED    32     /* Aborted with a signal or ^C */
  82 #define FSCK_LIBRARY     128    /* Shared library error */
  83
  84 /*
  85  * The last ext2fs revision level that this version of e2fsck is able to
  86  * support
  87  */
  88 #define E2FSCK_CURRENT_REV      1
  89
  90 /*
  91  * The directory information structure; stores directory information
  92  * collected in earlier passes, to avoid disk i/o in fetching the
  93  * directory information.
  94  */
  95 struct dir_info {
  96         ext2_ino_t              ino;    /* Inode number */
  97         ext2_ino_t              dotdot; /* Parent according to '..' */
  98         ext2_ino_t              parent; /* Parent according to treewalk */
  99 };
 100
 101
 102 /*
 103  * The indexed directory information structure; stores information for
 104  * directories which contain a hash tree index.
 105  */
 106 struct dx_dir_info {
 107         ext2_ino_t              ino;            /* Inode number */
 108         int                     numblocks;      /* number of blocks */
 109         int                     hashversion;
 110         short                   depth;          /* depth of tree */
 111         struct dx_dirblock_info *dx_block;      /* Array of size numblocks */
 112 };
 113
 114 #define DX_DIRBLOCK_ROOT        1
 115 #define DX_DIRBLOCK_LEAF        2
 116 #define DX_DIRBLOCK_NODE        3
 117 #define DX_DIRBLOCK_CORRUPT     4
 118 #define DX_DIRBLOCK_CLEARED     8
 119
 120 struct dx_dirblock_info {
 121         int             type;
 122         blk64_t         phys;
 123         int             flags;
 124         blk64_t         parent;
 125         blk64_t         previous;
 126         ext2_dirhash_t  min_hash;
 127         ext2_dirhash_t  max_hash;
 128         ext2_dirhash_t  node_min_hash;
 129         ext2_dirhash_t  node_max_hash;
 130 };
 131
 132 #define DX_FLAG_REFERENCED      1
 133 #define DX_FLAG_DUP_REF         2
 134 #define DX_FLAG_FIRST           4
 135 #define DX_FLAG_LAST            8
 136
 137 #define RESOURCE_TRACK
 138
 139 #ifdef RESOURCE_TRACK
 140 /*
 141  * This structure is used for keeping track of how much resources have
 142  * been used for a particular pass of e2fsck.
 143  */
 144 struct resource_track {
 145         struct timeval time_start;
 146         struct timeval user_start;
 147         struct timeval system_start;
 148         void    *brk_start;
 149         unsigned long long bytes_read;
 150         unsigned long long bytes_written;
 151 };
 152 #endif
 153
 154 /*
 155  * E2fsck options
 156  */
 157 #define E2F_OPT_READONLY        0x0001
 158 #define E2F_OPT_PREEN           0x0002
 159 #define E2F_OPT_YES             0x0004
 160 #define E2F_OPT_NO              0x0008
 161 #define E2F_OPT_TIME            0x0010
 162 #define E2F_OPT_TIME2           0x0020
 163 #define E2F_OPT_CHECKBLOCKS     0x0040
 164 #define E2F_OPT_DEBUG           0x0080
 165 #define E2F_OPT_FORCE           0x0100
 166 #define E2F_OPT_WRITECHECK      0x0200
 167 #define E2F_OPT_COMPRESS_DIRS   0x0400
 168 #define E2F_OPT_FRAGCHECK       0x0800
 169 #define E2F_OPT_JOURNAL_ONLY    0x1000 /* only replay the journal */
 170 #define E2F_OPT_DISCARD         0x2000
 171 #define E2F_OPT_CONVERT_BMAP    0x4000 /* convert blockmap to extent */
 172 #define E2F_OPT_FIXES_ONLY      0x8000 /* skip all optimizations */
 173 #define E2F_OPT_NOOPT_EXTENTS   0x10000 /* don't optimize extents */
 174 #define E2F_OPT_ICOUNT_FULLMAP  0x20000 /* use an array for inode counts */
 175
 176 /*
 177  * E2fsck flags
 178  */
 179 #define E2F_FLAG_ABORT          0x0001 /* Abort signaled */
 180 #define E2F_FLAG_CANCEL         0x0002 /* Cancel signaled */
 181 #define E2F_FLAG_SIGNAL_MASK    (E2F_FLAG_ABORT | E2F_FLAG_CANCEL)
 182 #define E2F_FLAG_RESTART        0x0004 /* Restart signaled */
 183 #define E2F_FLAG_RUN_RETURN     (E2F_FLAG_SIGNAL_MASK | E2F_FLAG_RESTART)
 184 #define E2F_FLAG_RESTART_LATER  0x0008 /* Restart after all iterations done */
 185 #define E2F_FLAG_SETJMP_OK      0x0010 /* Setjmp valid for abort */
 186
 187 #define E2F_FLAG_PROG_BAR       0x0020 /* Progress bar on screen */
 188 #define E2F_FLAG_PROG_SUPPRESS  0x0040 /* Progress suspended */
 189 #define E2F_FLAG_JOURNAL_INODE  0x0080 /* Create a new ext3 journal inode */
 190 #define E2F_FLAG_SB_SPECIFIED   0x0100 /* The superblock was explicitly
 191                                         * specified by the user */
 192 #define E2F_FLAG_RESTARTED      0x0200 /* E2fsck has been restarted */
 193 #define E2F_FLAG_RESIZE_INODE   0x0400 /* Request to recreate resize inode */
 194 #define E2F_FLAG_GOT_DEVSIZE    0x0800 /* Device size has been fetched */
 195 #define E2F_FLAG_EXITING        0x1000 /* E2fsck exiting due to errors */
 196 #define E2F_FLAG_TIME_INSANE    0x2000 /* Time is insane */
 197 #define E2F_FLAG_PROBLEMS_FIXED 0x4000 /* At least one problem was fixed */
 198 #define E2F_FLAG_ALLOC_OK       0x8000 /* Can we allocate blocks? */
 199
 200 #define E2F_RESET_FLAGS (E2F_FLAG_TIME_INSANE | E2F_FLAG_PROBLEMS_FIXED)
 201
 202 /*
 203  * Defines for indicating the e2fsck pass number
 204  */
 205 #define E2F_PASS_1      1
 206 #define E2F_PASS_2      2
 207 #define E2F_PASS_3      3
 208 #define E2F_PASS_4      4
 209 #define E2F_PASS_5      5
 210 #define E2F_PASS_1B     6
 211
 212 /*
 213  * Define the extended attribute refcount structure
 214  */
 215 typedef struct ea_refcount *ext2_refcount_t;
 216
 217 /*
 218  * This is the global e2fsck structure.
 219  */
 220 typedef struct e2fsck_struct *e2fsck_t;
 221
 222 #define MAX_EXTENT_DEPTH_COUNT 5
 223
 224 struct e2fsck_struct {
 225         ext2_filsys fs;
 226         const char *program_name;
 227         char *filesystem_name;
 228         char *device_name;
 229         char *io_options;
 230         FILE    *logf;
 231         char    *log_fn;
 232         int     flags;          /* E2fsck internal flags */
 233         int     options;
 234         int     blocksize;      /* blocksize */
 235         blk64_t use_superblock; /* sb requested by user */
 236         blk64_t superblock;     /* sb used to open fs */
 237         blk64_t num_blocks;     /* Total number of blocks */
 238         blk64_t free_blocks;
 239         ino_t   free_inodes;
 240         int     mount_flags;
 241         int     openfs_flags;
 242         blkid_cache blkid;      /* blkid cache */
 243
 244 #ifdef HAVE_SETJMP_H
 245         jmp_buf abort_loc;
 246 #endif
 247         unsigned long abort_code;
 248
 249         int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
 250                         unsigned long max);
 251
 252         ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
 253         ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
 254         ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
 255         ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
 256         ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
 257         ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
 258
 259         ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
 260         ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
 261         ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */
 262
 263         /*
 264          * Inode count arrays
 265          */
 266         ext2_icount_t   inode_count;
 267         ext2_icount_t inode_link_info;
 268
 269         ext2_refcount_t refcount;
 270         ext2_refcount_t refcount_extra;
 271
 272         /*
 273          * Quota blocks and inodes to be charged for each ea block.
 274          */
 275         ext2_refcount_t ea_block_quota_blocks;
 276         ext2_refcount_t ea_block_quota_inodes;
 277
 278         /*
 279          * ea_inode references from attr entries.
 280          */
 281         ext2_refcount_t ea_inode_refs;
 282
 283         /*
 284          * Array of flags indicating whether an inode bitmap, block
 285          * bitmap, or inode table is invalid
 286          */
 287         int *invalid_inode_bitmap_flag;
 288         int *invalid_block_bitmap_flag;
 289         int *invalid_inode_table_flag;
 290         int invalid_bitmaps;    /* There are invalid bitmaps/itable */
 291
 292         /*
 293          * Block buffer
 294          */
 295         char *block_buf;
 296
 297         /*
 298          * For pass1_check_directory and pass1_get_blocks
 299          */
 300         ext2_ino_t stashed_ino;
 301         struct ext2_inode *stashed_inode;
 302
 303         /*
 304          * Location of the lost and found directory
 305          */
 306         ext2_ino_t lost_and_found;
 307         int bad_lost_and_found;
 308
 309         /*
 310          * Directory information
 311          */
 312         struct dir_info_db      *dir_info;
 313
 314         /*
 315          * Indexed directory information
 316          */
 317         int             dx_dir_info_count;
 318         int             dx_dir_info_size;
 319         struct dx_dir_info *dx_dir_info;
 320
 321         /*
 322          * Directories to hash
 323          */
 324         ext2_u32_list   dirs_to_hash;
 325
 326         /*
 327          * Tuning parameters
 328          */
 329         int process_inode_size;
 330         int inode_buffer_blocks;
 331         unsigned int htree_slack_percentage;
 332
 333         /*
 334          * ext3 journal support
 335          */
 336         io_channel      journal_io;
 337         char    *journal_name;
 338
 339         /*
 340          * Ext4 quota support
 341          */
 342         quota_ctx_t qctx;
 343 #ifdef RESOURCE_TRACK
 344         /*
 345          * For timing purposes
 346          */
 347         struct resource_track   global_rtrack;
 348 #endif
 349
 350         /*
 351          * How we display the progress update (for unix)
 352          */
 353         int progress_fd;
 354         int progress_pos;
 355         int progress_last_percent;
 356         unsigned int progress_last_time;
 357         int interactive;        /* Are we connected directly to a tty? */
 358         char start_meta[2], stop_meta[2];
 359
 360         /* File counts */
 361         __u32 fs_directory_count;
 362         __u32 fs_regular_count;
 363         __u32 fs_blockdev_count;
 364         __u32 fs_chardev_count;
 365         __u32 fs_links_count;
 366         __u32 fs_symlinks_count;
 367         __u32 fs_fast_symlinks_count;
 368         __u32 fs_fifo_count;
 369         __u32 fs_total_count;
 370         __u32 fs_badblocks_count;
 371         __u32 fs_sockets_count;
 372         __u32 fs_ind_count;
 373         __u32 fs_dind_count;
 374         __u32 fs_tind_count;
 375         __u32 fs_fragmented;
 376         __u32 fs_fragmented_dir;
 377         __u32 large_files;
 378         __u32 fs_ext_attr_inodes;
 379         __u32 fs_ext_attr_blocks;
 380         __u32 extent_depth_count[MAX_EXTENT_DEPTH_COUNT];
 381
 382         /* misc fields */
 383         time_t now;
 384         time_t time_fudge;      /* For working around buggy init scripts */
 385         int ext_attr_ver;
 386         profile_t       profile;
 387         int blocks_per_page;
 388         ext2_u32_list encrypted_dirs;
 389
 390         /* Reserve blocks for root and l+f re-creation */
 391         blk64_t root_repair_block, lnf_repair_block;
 392
 393         /*
 394          * For the use of callers of the e2fsck functions; not used by
 395          * e2fsck functions themselves.
 396          */
 397         void *priv_data;
 398         ext2fs_block_bitmap block_metadata_map; /* Metadata blocks */
 399
 400         /* How much are we allowed to readahead? */
 401         unsigned long long readahead_kb;
 402
 403         /*
 404          * Inodes to rebuild extent trees
 405          */
 406         ext2fs_inode_bitmap inodes_to_rebuild;
 407
 408         /* Undo file */
 409         char *undo_file;
 410 };
 411
 412 /* Data structures to evaluate whether an extent tree needs rebuilding. */
 413 struct extent_tree_level {
 414         unsigned int    num_extents;
 415         unsigned int    max_extents;
 416 };
 417
 418 struct extent_tree_info {
 419         ext2_ino_t ino;
 420         int force_rebuild;
 421         struct extent_tree_level        ext_info[MAX_EXTENT_DEPTH_COUNT];
 422 };
 423
 424 /* Used by the region allocation code */
 425 typedef __u64 region_addr_t;
 426 typedef struct region_struct *region_t;
 427
 428 #ifndef HAVE_STRNLEN
 429 #define strnlen(str, x) e2fsck_strnlen((str),(x))
 430 extern int e2fsck_strnlen(const char * s, int count);
 431 #endif
 432
 433 /*
 434  * Procedure declarations
 435  */
 436
 437 extern void e2fsck_pass1(e2fsck_t ctx);
 438 extern void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
 439 extern void e2fsck_pass2(e2fsck_t ctx);
 440 extern void e2fsck_pass3(e2fsck_t ctx);
 441 extern void e2fsck_pass4(e2fsck_t ctx);
 442 extern void e2fsck_pass5(e2fsck_t ctx);
 443
 444 /* e2fsck.c */
 445 extern errcode_t e2fsck_allocate_context(e2fsck_t *ret);
 446 extern errcode_t e2fsck_reset_context(e2fsck_t ctx);
 447 extern void e2fsck_free_context(e2fsck_t ctx);
 448 extern int e2fsck_run(e2fsck_t ctx);
 449
 450
 451 /* badblock.c */
 452 extern void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
 453                                  int replace_bad_blocks);
 454
 455 /* dirinfo.c */
 456 extern void e2fsck_add_dir_info(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent);
 457 extern void e2fsck_free_dir_info(e2fsck_t ctx);
 458 extern int e2fsck_get_num_dirinfo(e2fsck_t ctx);
 459 extern struct dir_info_iter *e2fsck_dir_info_iter_begin(e2fsck_t ctx);
 460 extern struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx,
 461                                              struct dir_info_iter *);
 462 extern void e2fsck_dir_info_iter_end(e2fsck_t ctx, struct dir_info_iter *);
 463 extern int e2fsck_dir_info_set_parent(e2fsck_t ctx, ext2_ino_t ino,
 464                                       ext2_ino_t parent);
 465 extern int e2fsck_dir_info_set_dotdot(e2fsck_t ctx, ext2_ino_t ino,
 466                                       ext2_ino_t dotdot);
 467 extern int e2fsck_dir_info_get_parent(e2fsck_t ctx, ext2_ino_t ino,
 468                                       ext2_ino_t *parent);
 469 extern int e2fsck_dir_info_get_dotdot(e2fsck_t ctx, ext2_ino_t ino,
 470                                       ext2_ino_t *dotdot);
 471
 472 /* dx_dirinfo.c */
 473 extern void e2fsck_add_dx_dir(e2fsck_t ctx, ext2_ino_t ino, int num_blocks);
 474 extern struct dx_dir_info *e2fsck_get_dx_dir_info(e2fsck_t ctx, ext2_ino_t ino);
 475 extern void e2fsck_free_dx_dir_info(e2fsck_t ctx);
 476 extern int e2fsck_get_num_dx_dirinfo(e2fsck_t ctx);
 477 extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control);
 478
 479 /* ea_refcount.c */
 480 typedef __u64 ea_key_t;
 481 typedef __u64 ea_value_t;
 482
 483 extern errcode_t ea_refcount_create(size_t size, ext2_refcount_t *ret);
 484 extern void ea_refcount_free(ext2_refcount_t refcount);
 485 extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, ea_key_t ea_key,
 486                                    ea_value_t *ret);
 487 extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
 488                                        ea_key_t ea_key, ea_value_t *ret);
 489 extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
 490                                        ea_key_t ea_key, ea_value_t *ret);
 491 extern errcode_t ea_refcount_store(ext2_refcount_t refcount, ea_key_t ea_key,
 492                                    ea_value_t count);
 493 extern size_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
 494 extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
 495 extern ea_key_t ea_refcount_intr_next(ext2_refcount_t refcount,
 496                                       ea_value_t *ret);
 497
 498 /* ehandler.c */
 499 extern const char *ehandler_operation(const char *op);
 500 extern void ehandler_init(io_channel channel);
 501
 502 /* extents.c */
 503 struct problem_context;
 504 errcode_t e2fsck_rebuild_extents_later(e2fsck_t ctx, ext2_ino_t ino);
 505 int e2fsck_ino_will_be_rebuilt(e2fsck_t ctx, ext2_ino_t ino);
 506 void e2fsck_pass1e(e2fsck_t ctx);
 507 errcode_t e2fsck_check_rebuild_extents(e2fsck_t ctx, ext2_ino_t ino,
 508                                        struct ext2_inode *inode,
 509                                        struct problem_context *pctx);
 510 errcode_t e2fsck_should_rebuild_extents(e2fsck_t ctx,
 511                                         struct problem_context *pctx,
 512                                         struct extent_tree_info *eti,
 513                                         struct ext2_extent_info *info);
 514
 515 /* journal.c */
 516 extern errcode_t e2fsck_check_ext3_journal(e2fsck_t ctx);
 517 extern errcode_t e2fsck_run_ext3_journal(e2fsck_t ctx);
 518 extern void e2fsck_move_ext3_journal(e2fsck_t ctx);
 519 extern int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx);
 520
 521 /* logfile.c */
 522 extern void set_up_logging(e2fsck_t ctx);
 523
 524 /* quota.c */
 525 extern void e2fsck_hide_quota(e2fsck_t ctx);
 526 extern void e2fsck_validate_quota_inodes(e2fsck_t ctx);
 527
 528 /* pass1.c */
 529 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 530                                      int flags, ext2_icount_t hint,
 531                                      ext2_icount_t *ret);
 532 extern void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts);
 533 extern int e2fsck_pass1_check_device_inode(ext2_filsys fs,
 534                                            struct ext2_inode *inode);
 535 extern int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 536                                       struct ext2_inode *inode, char *buf);
 537 extern void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
 538                                struct ext2_inode *inode, int restart_flag,
 539                                const char *source);
 540 extern void e2fsck_intercept_block_allocations(e2fsck_t ctx);
 541
 542 /* pass2.c */
 543 extern int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir,
 544                                     ext2_ino_t ino, char *buf);
 545 extern int get_filename_hash(ext2_filsys fs, int encrypted, int version,
 546                              const char *name, int len,
 547                              ext2_dirhash_t *ret_hash,
 548                              ext2_dirhash_t *ret_minor_hash);
 549
 550 /* pass3.c */
 551 extern int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t inode);
 552 extern errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
 553                                          int num, int gauranteed_size);
 554 extern ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix);
 555 extern errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino,
 556                                            int adj);
 557
 558 /* readahead.c */
 559 #define E2FSCK_READA_SUPER      (0x01)
 560 #define E2FSCK_READA_GDT        (0x02)
 561 #define E2FSCK_READA_BBITMAP    (0x04)
 562 #define E2FSCK_READA_IBITMAP    (0x08)
 563 #define E2FSCK_READA_ITABLE     (0x10)
 564 #define E2FSCK_READA_ALL_FLAGS  (0x1F)
 565 errcode_t e2fsck_readahead(ext2_filsys fs, int flags, dgrp_t start,
 566                            dgrp_t ngroups);
 567 #define E2FSCK_RA_DBLIST_IGNORE_BLOCKCNT        (0x01)
 568 #define E2FSCK_RA_DBLIST_ALL_FLAGS              (0x01)
 569 errcode_t e2fsck_readahead_dblist(ext2_filsys fs, int flags,
 570                                   ext2_dblist dblist,
 571                                   unsigned long long start,
 572                                   unsigned long long count);
 573 int e2fsck_can_readahead(ext2_filsys fs);
 574 unsigned long long e2fsck_guess_readahead(ext2_filsys fs);
 575
 576 /* region.c */
 577 extern region_t region_create(region_addr_t min, region_addr_t max);
 578 extern void region_free(region_t region);
 579 extern int region_allocate(region_t region, region_addr_t start, int n);
 580
 581 /* rehash.c */
 582 void e2fsck_rehash_dir_later(e2fsck_t ctx, ext2_ino_t ino);
 583 int e2fsck_dir_will_be_rehashed(e2fsck_t ctx, ext2_ino_t ino);
 584 errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino,
 585                             struct problem_context *pctx);
 586 void e2fsck_rehash_directories(e2fsck_t ctx);
 587
 588 /* sigcatcher.c */
 589 void sigcatcher_setup(void);
 590
 591 /* super.c */
 592 void check_super_block(e2fsck_t ctx);
 593 int check_backup_super_block(e2fsck_t ctx);
 594 void check_resize_inode(e2fsck_t ctx);
 595
 596 /* util.c */
 597 extern void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
 598                                     const char *description);
 599 extern int ask(e2fsck_t ctx, const char * string, int def);
 600 extern int ask_yn(e2fsck_t ctx, const char * string, int def);
 601 extern void fatal_error(e2fsck_t ctx, const char * fmt_string);
 602 extern void log_out(e2fsck_t ctx, const char *fmt, ...)
 603         E2FSCK_ATTR((format(printf, 2, 3)));
 604 extern void log_err(e2fsck_t ctx, const char *fmt, ...)
 605         E2FSCK_ATTR((format(printf, 2, 3)));
 606 extern void e2fsck_read_bitmaps(e2fsck_t ctx);
 607 extern void e2fsck_write_bitmaps(e2fsck_t ctx);
 608 extern void preenhalt(e2fsck_t ctx);
 609 extern char *string_copy(e2fsck_t ctx, const char *str, int len);
 610 extern int fs_proc_check(const char *fs_name);
 611 extern int check_for_modules(const char *fs_name);
 612 #ifdef RESOURCE_TRACK
 613 extern void print_resource_track(e2fsck_t ctx,
 614                                  const char *desc,
 615                                  struct resource_track *track,
 616                                  io_channel channel);
 617 extern void init_resource_track(struct resource_track *track,
 618                                 io_channel channel);
 619 #else
 620 #define print_resource_track(ctx, desc, track, channel) do { } while (0)
 621 #define init_resource_track(track, channel) do { } while (0)
 622 #endif
 623 extern int inode_has_valid_blocks(struct ext2_inode *inode);
 624 extern void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
 625                               struct ext2_inode * inode, const char * proc);
 626 extern void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino,
 627                                    struct ext2_inode *inode,
 628                                    const int bufsize, const char *proc);
 629 extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
 630                                struct ext2_inode * inode, const char * proc);
 631 extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
 632                                struct ext2_inode * inode, int bufsize,
 633                                const char *proc);
 634 #ifdef MTRACE
 635 extern void mtrace_print(char *mesg);
 636 #endif
 637 extern blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs,
 638                            const char *name, io_manager manager);
 639 extern int ext2_file_type(unsigned int mode);
 640 extern int write_all(int fd, char *buf, size_t count);
 641 void dump_mmp_msg(struct mmp_struct *mmp, const char *msg);
 642 errcode_t e2fsck_mmp_update(ext2_filsys fs);
 643
 644 extern void e2fsck_set_bitmap_type(ext2_filsys fs,
 645                                    unsigned int default_type,
 646                                    const char *profile_name,
 647                                    unsigned int *old_type);
 648 extern errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs,
 649                                               const char *descr,
 650                                               int default_type,
 651                                               const char *profile_name,
 652                                               ext2fs_inode_bitmap *ret);
 653 extern errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs,
 654                                               const char *descr,
 655                                               int default_type,
 656                                               const char *profile_name,
 657                                               ext2fs_block_bitmap *ret);
 658 extern errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs,
 659                                                    const char *descr,
 660                                                    int default_type,
 661                                                    const char *profile_name,
 662                                                    ext2fs_block_bitmap *ret);
 663 unsigned long long get_memory_size(void);
 664
 665 /* unix.c */
 666 extern void e2fsck_clear_progbar(e2fsck_t ctx);
 667 extern int e2fsck_simple_progress(e2fsck_t ctx, const char *label,
 668                                   float percent, unsigned int dpynum);
 669
 670 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
 671
 672 #endif /* _E2FSCK_H */