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         short                   depth;          /* depth of tree (15 bits) */
 109         __u8                    hashversion;
 110         __u8                    casefolded_hash:1;
 111         blk_t                   numblocks;      /* number of blocks in dir */
 112         struct dx_dirblock_info *dx_block;      /* Array of size numblocks */
 113 };
 114
 115 #define DX_DIRBLOCK_ROOT        1
 116 #define DX_DIRBLOCK_LEAF        2
 117 #define DX_DIRBLOCK_NODE        3
 118 #define DX_DIRBLOCK_CORRUPT     4
 119 #define DX_DIRBLOCK_CLEARED     8
 120
 121 struct dx_dirblock_info {
 122         int             type;
 123         int             flags;
 124         blk64_t         phys;
 125         blk64_t         parent;
 126         blk64_t         previous;
 127         ext2_dirhash_t  min_hash;
 128         ext2_dirhash_t  max_hash;
 129         ext2_dirhash_t  node_min_hash;
 130         ext2_dirhash_t  node_max_hash;
 131 };
 132
 133 #define DX_FLAG_REFERENCED      1
 134 #define DX_FLAG_DUP_REF         2
 135 #define DX_FLAG_FIRST           4
 136 #define DX_FLAG_LAST            8
 137
 138 #define RESOURCE_TRACK
 139
 140 #ifdef RESOURCE_TRACK
 141 /*
 142  * This structure is used for keeping track of how much resources have
 143  * been used for a particular pass of e2fsck.
 144  */
 145 struct resource_track {
 146         struct timeval time_start;
 147         struct timeval user_start;
 148         struct timeval system_start;
 149         void    *brk_start;
 150         unsigned long long bytes_read;
 151         unsigned long long bytes_written;
 152 };
 153 #endif
 154
 155 /*
 156  * E2fsck options
 157  */
 158 #define E2F_OPT_READONLY        0x0001
 159 #define E2F_OPT_PREEN           0x0002
 160 #define E2F_OPT_YES             0x0004
 161 #define E2F_OPT_NO              0x0008
 162 #define E2F_OPT_TIME            0x0010
 163 #define E2F_OPT_TIME2           0x0020
 164 #define E2F_OPT_CHECKBLOCKS     0x0040
 165 #define E2F_OPT_DEBUG           0x0080
 166 #define E2F_OPT_FORCE           0x0100
 167 #define E2F_OPT_WRITECHECK      0x0200
 168 #define E2F_OPT_COMPRESS_DIRS   0x0400
 169 #define E2F_OPT_FRAGCHECK       0x0800
 170 #define E2F_OPT_JOURNAL_ONLY    0x1000 /* only replay the journal */
 171 #define E2F_OPT_DISCARD         0x2000
 172 #define E2F_OPT_CONVERT_BMAP    0x4000 /* convert blockmap to extent */
 173 #define E2F_OPT_FIXES_ONLY      0x8000 /* skip all optimizations */
 174 #define E2F_OPT_NOOPT_EXTENTS   0x10000 /* don't optimize extents */
 175 #define E2F_OPT_ICOUNT_FULLMAP  0x20000 /* use an array for inode counts */
 176 #define E2F_OPT_UNSHARE_BLOCKS  0x40000
 177
 178 /*
 179  * E2fsck flags
 180  */
 181 #define E2F_FLAG_ABORT          0x0001 /* Abort signaled */
 182 #define E2F_FLAG_CANCEL         0x0002 /* Cancel signaled */
 183 #define E2F_FLAG_SIGNAL_MASK    (E2F_FLAG_ABORT | E2F_FLAG_CANCEL)
 184 #define E2F_FLAG_RESTART        0x0004 /* Restart signaled */
 185 #define E2F_FLAG_RUN_RETURN     (E2F_FLAG_SIGNAL_MASK | E2F_FLAG_RESTART)
 186 #define E2F_FLAG_RESTART_LATER  0x0008 /* Restart after all iterations done */
 187 #define E2F_FLAG_SETJMP_OK      0x0010 /* Setjmp valid for abort */
 188
 189 #define E2F_FLAG_PROG_BAR       0x0020 /* Progress bar on screen */
 190 #define E2F_FLAG_PROG_SUPPRESS  0x0040 /* Progress suspended */
 191 #define E2F_FLAG_JOURNAL_INODE  0x0080 /* Create a new ext3 journal inode */
 192 #define E2F_FLAG_SB_SPECIFIED   0x0100 /* The superblock was explicitly
 193                                         * specified by the user */
 194 #define E2F_FLAG_RESTARTED      0x0200 /* E2fsck has been restarted */
 195 #define E2F_FLAG_RESIZE_INODE   0x0400 /* Request to recreate resize inode */
 196 #define E2F_FLAG_GOT_DEVSIZE    0x0800 /* Device size has been fetched */
 197 #define E2F_FLAG_EXITING        0x1000 /* E2fsck exiting due to errors */
 198 #define E2F_FLAG_TIME_INSANE    0x2000 /* Time is insane */
 199 #define E2F_FLAG_PROBLEMS_FIXED 0x4000 /* At least one problem was fixed */
 200 #define E2F_FLAG_ALLOC_OK       0x8000 /* Can we allocate blocks? */
 201
 202 #define E2F_RESET_FLAGS (E2F_FLAG_TIME_INSANE | E2F_FLAG_PROBLEMS_FIXED)
 203
 204 /*
 205  * Defines for indicating the e2fsck pass number
 206  */
 207 #define E2F_PASS_1      1
 208 #define E2F_PASS_2      2
 209 #define E2F_PASS_3      3
 210 #define E2F_PASS_4      4
 211 #define E2F_PASS_5      5
 212 #define E2F_PASS_1B     6
 213
 214 /*
 215  * Define the extended attribute refcount structure
 216  */
 217 typedef struct ea_refcount *ext2_refcount_t;
 218
 219 /*
 220  * This is the global e2fsck structure.
 221  */
 222 typedef struct e2fsck_struct *e2fsck_t;
 223
 224 #define MAX_EXTENT_DEPTH_COUNT 5
 225
 226 struct e2fsck_struct {
 227         ext2_filsys fs;
 228         const char *program_name;
 229         char *filesystem_name;
 230         char *device_name;
 231         char *io_options;
 232         FILE    *logf;
 233         char    *log_fn;
 234         FILE    *problem_logf;
 235         char    *problem_log_fn;
 236         int     flags;          /* E2fsck internal flags */
 237         int     options;
 238         unsigned blocksize;     /* blocksize */
 239         blk64_t use_superblock; /* sb requested by user */
 240         blk64_t superblock;     /* sb used to open fs */
 241         blk64_t num_blocks;     /* Total number of blocks */
 242         blk64_t free_blocks;
 243         ext2_ino_t free_inodes;
 244         int     mount_flags;
 245         int     openfs_flags;
 246         blkid_cache blkid;      /* blkid cache */
 247
 248 #ifdef HAVE_SETJMP_H
 249         jmp_buf abort_loc;
 250 #endif
 251         unsigned long abort_code;
 252
 253         int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
 254                         unsigned long max);
 255
 256         ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
 257         ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
 258         ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
 259         ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
 260         ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
 261         ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
 262
 263         ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
 264         ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
 265         ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */
 266
 267         /*
 268          * Inode count arrays
 269          */
 270         ext2_icount_t   inode_count;
 271         ext2_icount_t inode_link_info;
 272
 273         ext2_refcount_t refcount;
 274         ext2_refcount_t refcount_extra;
 275
 276         /*
 277          * Quota blocks and inodes to be charged for each ea block.
 278          */
 279         ext2_refcount_t ea_block_quota_blocks;
 280         ext2_refcount_t ea_block_quota_inodes;
 281
 282         /*
 283          * ea_inode references from attr entries.
 284          */
 285         ext2_refcount_t ea_inode_refs;
 286
 287         /*
 288          * Array of flags indicating whether an inode bitmap, block
 289          * bitmap, or inode table is invalid
 290          */
 291         int *invalid_inode_bitmap_flag;
 292         int *invalid_block_bitmap_flag;
 293         int *invalid_inode_table_flag;
 294         int invalid_bitmaps;    /* There are invalid bitmaps/itable */
 295
 296         /*
 297          * Block buffer
 298          */
 299         char *block_buf;
 300
 301         /*
 302          * For pass1_check_directory and pass1_get_blocks
 303          */
 304         ext2_ino_t stashed_ino;
 305         struct ext2_inode *stashed_inode;
 306
 307         /*
 308          * Location of the lost and found directory
 309          */
 310         ext2_ino_t lost_and_found;
 311         int bad_lost_and_found;
 312
 313         /*
 314          * Directory information
 315          */
 316         struct dir_info_db      *dir_info;
 317
 318         /*
 319          * Indexed directory information
 320          */
 321         ext2_ino_t              dx_dir_info_count;
 322         ext2_ino_t              dx_dir_info_size;
 323         struct dx_dir_info      *dx_dir_info;
 324
 325         /*
 326          * Directories to hash
 327          */
 328         ext2_u32_list   dirs_to_hash;
 329
 330         /*
 331          * Tuning parameters
 332          */
 333         int process_inode_size;
 334         int inode_buffer_blocks;
 335         unsigned int htree_slack_percentage;
 336
 337         /*
 338          * ext3 journal support
 339          */
 340         io_channel      journal_io;
 341         char    *journal_name;
 342
 343         /*
 344          * Ext4 quota support
 345          */
 346         quota_ctx_t qctx;
 347 #ifdef RESOURCE_TRACK
 348         /*
 349          * For timing purposes
 350          */
 351         struct resource_track   global_rtrack;
 352 #endif
 353
 354         /*
 355          * How we display the progress update (for unix)
 356          */
 357         int progress_fd;
 358         int progress_pos;
 359         int progress_last_percent;
 360         unsigned int progress_last_time;
 361         int interactive;        /* Are we connected directly to a tty? */
 362         char start_meta[2], stop_meta[2];
 363
 364         /* File counts */
 365         __u32 fs_directory_count;
 366         __u32 fs_regular_count;
 367         __u32 fs_blockdev_count;
 368         __u32 fs_chardev_count;
 369         __u32 fs_links_count;
 370         __u32 fs_symlinks_count;
 371         __u32 fs_fast_symlinks_count;
 372         __u32 fs_fifo_count;
 373         __u32 fs_total_count;
 374         __u32 fs_badblocks_count;
 375         __u32 fs_sockets_count;
 376         __u32 fs_ind_count;
 377         __u32 fs_dind_count;
 378         __u32 fs_tind_count;
 379         __u32 fs_fragmented;
 380         __u32 fs_fragmented_dir;
 381         __u32 large_files;
 382         __u32 fs_ext_attr_inodes;
 383         __u32 fs_ext_attr_blocks;
 384         __u32 extent_depth_count[MAX_EXTENT_DEPTH_COUNT];
 385
 386         /* misc fields */
 387         time_t now;
 388         time_t time_fudge;      /* For working around buggy init scripts */
 389         int ext_attr_ver;
 390         profile_t       profile;
 391         int blocks_per_page;
 392         ext2_u32_list encrypted_dirs;
 393
 394         /* Reserve blocks for root and l+f re-creation */
 395         blk64_t root_repair_block, lnf_repair_block;
 396
 397         /*
 398          * For the use of callers of the e2fsck functions; not used by
 399          * e2fsck functions themselves.
 400          */
 401         void *priv_data;
 402         ext2fs_block_bitmap block_metadata_map; /* Metadata blocks */
 403
 404         /* How much are we allowed to readahead? */
 405         unsigned long long readahead_kb;
 406
 407         /*
 408          * Inodes to rebuild extent trees
 409          */
 410         ext2fs_inode_bitmap inodes_to_rebuild;
 411
 412         /* Undo file */
 413         char *undo_file;
 414 };
 415
 416 /* Data structures to evaluate whether an extent tree needs rebuilding. */
 417 struct extent_tree_level {
 418         unsigned int    num_extents;
 419         unsigned int    max_extents;
 420 };
 421
 422 struct extent_tree_info {
 423         ext2_ino_t ino;
 424         int force_rebuild;
 425         struct extent_tree_level        ext_info[MAX_EXTENT_DEPTH_COUNT];
 426 };
 427
 428 /* Used by the region allocation code */
 429 typedef __u64 region_addr_t;
 430 typedef struct region_struct *region_t;
 431
 432 #ifndef HAVE_STRNLEN
 433 #define strnlen(str, x) e2fsck_strnlen((str),(x))
 434 extern int e2fsck_strnlen(const char * s, int count);
 435 #endif
 436
 437 /*
 438  * Procedure declarations
 439  */
 440
 441 extern void e2fsck_pass1(e2fsck_t ctx);
 442 extern void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
 443 extern void e2fsck_pass2(e2fsck_t ctx);
 444 extern void e2fsck_pass3(e2fsck_t ctx);
 445 extern void e2fsck_pass4(e2fsck_t ctx);
 446 extern void e2fsck_pass5(e2fsck_t ctx);
 447
 448 /* e2fsck.c */
 449 extern errcode_t e2fsck_allocate_context(e2fsck_t *ret);
 450 extern errcode_t e2fsck_reset_context(e2fsck_t ctx);
 451 extern void e2fsck_free_context(e2fsck_t ctx);
 452 extern int e2fsck_run(e2fsck_t ctx);
 453
 454
 455 /* badblock.c */
 456 extern void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
 457                                  int replace_bad_blocks);
 458
 459 /* dirinfo.c */
 460 extern void e2fsck_add_dir_info(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent);
 461 extern void e2fsck_free_dir_info(e2fsck_t ctx);
 462 extern int e2fsck_get_num_dirinfo(e2fsck_t ctx);
 463 extern struct dir_info_iter *e2fsck_dir_info_iter_begin(e2fsck_t ctx);
 464 extern struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx,
 465                                              struct dir_info_iter *);
 466 extern void e2fsck_dir_info_iter_end(e2fsck_t ctx, struct dir_info_iter *);
 467 extern int e2fsck_dir_info_set_parent(e2fsck_t ctx, ext2_ino_t ino,
 468                                       ext2_ino_t parent);
 469 extern int e2fsck_dir_info_set_dotdot(e2fsck_t ctx, ext2_ino_t ino,
 470                                       ext2_ino_t dotdot);
 471 extern int e2fsck_dir_info_get_parent(e2fsck_t ctx, ext2_ino_t ino,
 472                                       ext2_ino_t *parent);
 473 extern int e2fsck_dir_info_get_dotdot(e2fsck_t ctx, ext2_ino_t ino,
 474                                       ext2_ino_t *dotdot);
 475
 476 /* dx_dirinfo.c */
 477 extern void e2fsck_add_dx_dir(e2fsck_t ctx, ext2_ino_t ino,
 478                               struct ext2_inode *inode, int num_blocks);
 479 extern struct dx_dir_info *e2fsck_get_dx_dir_info(e2fsck_t ctx, ext2_ino_t ino);
 480 extern void e2fsck_free_dx_dir_info(e2fsck_t ctx);
 481 extern ext2_ino_t e2fsck_get_num_dx_dirinfo(e2fsck_t ctx);
 482 extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx,
 483                                                    ext2_ino_t *control);
 484
 485 /* ea_refcount.c */
 486 typedef __u64 ea_key_t;
 487 typedef __u64 ea_value_t;
 488
 489 extern errcode_t ea_refcount_create(size_t size, ext2_refcount_t *ret);
 490 extern void ea_refcount_free(ext2_refcount_t refcount);
 491 extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, ea_key_t ea_key,
 492                                    ea_value_t *ret);
 493 extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
 494                                        ea_key_t ea_key, ea_value_t *ret);
 495 extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
 496                                        ea_key_t ea_key, ea_value_t *ret);
 497 extern errcode_t ea_refcount_store(ext2_refcount_t refcount, ea_key_t ea_key,
 498                                    ea_value_t count);
 499 extern size_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
 500 extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
 501 extern ea_key_t ea_refcount_intr_next(ext2_refcount_t refcount,
 502                                       ea_value_t *ret);
 503
 504 /* ehandler.c */
 505 extern const char *ehandler_operation(const char *op);
 506 extern void ehandler_init(io_channel channel);
 507
 508 /* extents.c */
 509 struct problem_context;
 510 errcode_t e2fsck_rebuild_extents_later(e2fsck_t ctx, ext2_ino_t ino);
 511 int e2fsck_ino_will_be_rebuilt(e2fsck_t ctx, ext2_ino_t ino);
 512 void e2fsck_pass1e(e2fsck_t ctx);
 513 errcode_t e2fsck_check_rebuild_extents(e2fsck_t ctx, ext2_ino_t ino,
 514                                        struct ext2_inode *inode,
 515                                        struct problem_context *pctx);
 516 errcode_t e2fsck_should_rebuild_extents(e2fsck_t ctx,
 517                                         struct problem_context *pctx,
 518                                         struct extent_tree_info *eti,
 519                                         struct ext2_extent_info *info);
 520
 521 /* journal.c */
 522 extern errcode_t e2fsck_check_ext3_journal(e2fsck_t ctx);
 523 extern errcode_t e2fsck_run_ext3_journal(e2fsck_t ctx);
 524 extern void e2fsck_move_ext3_journal(e2fsck_t ctx);
 525 extern int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx);
 526
 527 /* logfile.c */
 528 extern void set_up_logging(e2fsck_t ctx);
 529
 530 /* quota.c */
 531 extern void e2fsck_hide_quota(e2fsck_t ctx);
 532 extern void e2fsck_validate_quota_inodes(e2fsck_t ctx);
 533
 534 /* pass1.c */
 535 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 536                                      int flags, ext2_icount_t hint,
 537                                      ext2_icount_t *ret);
 538 extern void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts);
 539 extern int e2fsck_pass1_check_device_inode(ext2_filsys fs,
 540                                            struct ext2_inode *inode);
 541 extern int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 542                                       struct ext2_inode *inode, char *buf);
 543 extern void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
 544                                struct ext2_inode *inode, int restart_flag,
 545                                const char *source);
 546 extern void e2fsck_intercept_block_allocations(e2fsck_t ctx);
 547
 548 /* pass2.c */
 549 extern int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir,
 550                                     ext2_ino_t ino, char *buf);
 551
 552 /* pass3.c */
 553 extern int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t inode);
 554 extern errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
 555                                          int num, int gauranteed_size);
 556 extern ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix);
 557 extern errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino,
 558                                            int adj);
 559
 560 /* readahead.c */
 561 #define E2FSCK_READA_SUPER      (0x01)
 562 #define E2FSCK_READA_GDT        (0x02)
 563 #define E2FSCK_READA_BBITMAP    (0x04)
 564 #define E2FSCK_READA_IBITMAP    (0x08)
 565 #define E2FSCK_READA_ITABLE     (0x10)
 566 #define E2FSCK_READA_ALL_FLAGS  (0x1F)
 567 errcode_t e2fsck_readahead(ext2_filsys fs, int flags, dgrp_t start,
 568                            dgrp_t ngroups);
 569 #define E2FSCK_RA_DBLIST_IGNORE_BLOCKCNT        (0x01)
 570 #define E2FSCK_RA_DBLIST_ALL_FLAGS              (0x01)
 571 errcode_t e2fsck_readahead_dblist(ext2_filsys fs, int flags,
 572                                   ext2_dblist dblist,
 573                                   unsigned long long start,
 574                                   unsigned long long count);
 575 int e2fsck_can_readahead(ext2_filsys fs);
 576 unsigned long long e2fsck_guess_readahead(ext2_filsys fs);
 577
 578 /* region.c */
 579 extern region_t region_create(region_addr_t min, region_addr_t max);
 580 extern void region_free(region_t region);
 581 extern int region_allocate(region_t region, region_addr_t start, int n);
 582
 583 /* rehash.c */
 584 void e2fsck_rehash_dir_later(e2fsck_t ctx, ext2_ino_t ino);
 585 int e2fsck_dir_will_be_rehashed(e2fsck_t ctx, ext2_ino_t ino);
 586 errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino,
 587                             struct problem_context *pctx);
 588 void e2fsck_rehash_directories(e2fsck_t ctx);
 589
 590 /* sigcatcher.c */
 591 void sigcatcher_setup(void);
 592
 593 /* super.c */
 594 void check_super_block(e2fsck_t ctx);
 595 int check_backup_super_block(e2fsck_t ctx);
 596 void check_resize_inode(e2fsck_t ctx);
 597
 598 /* util.c */
 599 extern void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned long size,
 600                                     const char *description);
 601 extern int ask(e2fsck_t ctx, const char * string, int def);
 602 extern int ask_yn(e2fsck_t ctx, const char * string, int def);
 603 extern void fatal_error(e2fsck_t ctx, const char * fmt_string);
 604 extern void log_out(e2fsck_t ctx, const char *fmt, ...)
 605         E2FSCK_ATTR((format(printf, 2, 3)));
 606 extern void log_err(e2fsck_t ctx, const char *fmt, ...)
 607         E2FSCK_ATTR((format(printf, 2, 3)));
 608 extern void e2fsck_read_bitmaps(e2fsck_t ctx);
 609 extern void e2fsck_write_bitmaps(e2fsck_t ctx);
 610 extern void preenhalt(e2fsck_t ctx);
 611 extern char *string_copy(e2fsck_t ctx, const char *str, int len);
 612 extern int fs_proc_check(const char *fs_name);
 613 extern int check_for_modules(const char *fs_name);
 614 #ifdef RESOURCE_TRACK
 615 extern void print_resource_track(e2fsck_t ctx,
 616                                  const char *desc,
 617                                  struct resource_track *track,
 618                                  io_channel channel);
 619 extern void init_resource_track(struct resource_track *track,
 620                                 io_channel channel);
 621 #else
 622 #define print_resource_track(ctx, desc, track, channel) do { } while (0)
 623 #define init_resource_track(track, channel) do { } while (0)
 624 #endif
 625 extern int inode_has_valid_blocks(struct ext2_inode *inode);
 626 extern void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
 627                               struct ext2_inode * inode, const char * proc);
 628 extern void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino,
 629                                    struct ext2_inode *inode,
 630                                    const int bufsize, const char *proc);
 631 extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
 632                                struct ext2_inode * inode, const char * proc);
 633 extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
 634                                struct ext2_inode * inode, int bufsize,
 635                                const char *proc);
 636 #ifdef MTRACE
 637 extern void mtrace_print(char *mesg);
 638 #endif
 639 extern blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs,
 640                            const char *name, io_manager manager);
 641 extern int ext2_file_type(unsigned int mode);
 642 extern int write_all(int fd, char *buf, size_t count);
 643 void dump_mmp_msg(struct mmp_struct *mmp, const char *fmt, ...)
 644         E2FSCK_ATTR((format(printf, 2, 3)));
 645 errcode_t e2fsck_mmp_update(ext2_filsys fs);
 646
 647 extern void e2fsck_set_bitmap_type(ext2_filsys fs,
 648                                    unsigned int default_type,
 649                                    const char *profile_name,
 650                                    unsigned int *old_type);
 651 extern errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs,
 652                                               const char *descr,
 653                                               int default_type,
 654                                               const char *profile_name,
 655                                               ext2fs_inode_bitmap *ret);
 656 extern errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs,
 657                                               const char *descr,
 658                                               int default_type,
 659                                               const char *profile_name,
 660                                               ext2fs_block_bitmap *ret);
 661 extern errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs,
 662                                                    const char *descr,
 663                                                    int default_type,
 664                                                    const char *profile_name,
 665                                                    ext2fs_block_bitmap *ret);
 666 unsigned long long get_memory_size(void);
 667
 668 /* unix.c */
 669 extern void e2fsck_clear_progbar(e2fsck_t ctx);
 670 extern int e2fsck_simple_progress(e2fsck_t ctx, const char *label,
 671                                   float percent, unsigned int dpynum);
 672
 673 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
 674
 675 #endif /* _E2FSCK_H */