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 "profile.h"
  40 #include "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 /*
  65  * Exit codes used by fsck-type programs
  66  */
  67 #define FSCK_OK          0      /* No errors */
  68 #define FSCK_NONDESTRUCT 1      /* File system errors corrected */
  69 #define FSCK_REBOOT      2      /* System should be rebooted */
  70 #define FSCK_UNCORRECTED 4      /* File system errors left uncorrected */
  71 #define FSCK_ERROR       8      /* Operational error */
  72 #define FSCK_USAGE       16     /* Usage or syntax error */
  73 #define FSCK_CANCELED    32     /* Aborted with a signal or ^C */
  74 #define FSCK_LIBRARY     128    /* Shared library error */
  75
  76 /*
  77  * The last ext2fs revision level that this version of e2fsck is able to
  78  * support
  79  */
  80 #define E2FSCK_CURRENT_REV      1
  81
  82 /*
  83  * The directory information structure; stores directory information
  84  * collected in earlier passes, to avoid disk i/o in fetching the
  85  * directory information.
  86  */
  87 struct dir_info {
  88         ext2_ino_t              ino;    /* Inode number */
  89         ext2_ino_t              dotdot; /* Parent according to '..' */
  90         ext2_ino_t              parent; /* Parent according to treewalk */
  91 };
  92
  93
  94 /*
  95  * The indexed directory information structure; stores information for
  96  * directories which contain a hash tree index.
  97  */
  98 struct dx_dir_info {
  99         ext2_ino_t              ino;            /* Inode number */
 100         int                     numblocks;      /* number of blocks */
 101         int                     hashversion;
 102         short                   depth;          /* depth of tree */
 103         struct dx_dirblock_info *dx_block;      /* Array of size numblocks */
 104 };
 105
 106 #define DX_DIRBLOCK_ROOT        1
 107 #define DX_DIRBLOCK_LEAF        2
 108 #define DX_DIRBLOCK_NODE        3
 109 #define DX_DIRBLOCK_CORRUPT     4
 110 #define DX_DIRBLOCK_CLEARED     8
 111
 112 struct dx_dirblock_info {
 113         int             type;
 114         blk_t           phys;
 115         int             flags;
 116         blk_t           parent;
 117         ext2_dirhash_t  min_hash;
 118         ext2_dirhash_t  max_hash;
 119         ext2_dirhash_t  node_min_hash;
 120         ext2_dirhash_t  node_max_hash;
 121 };
 122
 123 #define DX_FLAG_REFERENCED      1
 124 #define DX_FLAG_DUP_REF         2
 125 #define DX_FLAG_FIRST           4
 126 #define DX_FLAG_LAST            8
 127
 128 #ifdef RESOURCE_TRACK
 129 /*
 130  * This structure is used for keeping track of how much resources have
 131  * been used for a particular pass of e2fsck.
 132  */
 133 struct resource_track {
 134         struct timeval time_start;
 135         struct timeval user_start;
 136         struct timeval system_start;
 137         void    *brk_start;
 138         unsigned long long bytes_read;
 139         unsigned long long bytes_written;
 140 };
 141 #endif
 142
 143 /*
 144  * E2fsck options
 145  */
 146 #define E2F_OPT_READONLY        0x0001
 147 #define E2F_OPT_PREEN           0x0002
 148 #define E2F_OPT_YES             0x0004
 149 #define E2F_OPT_NO              0x0008
 150 #define E2F_OPT_TIME            0x0010
 151 #define E2F_OPT_TIME2           0x0020
 152 #define E2F_OPT_CHECKBLOCKS     0x0040
 153 #define E2F_OPT_DEBUG           0x0080
 154 #define E2F_OPT_FORCE           0x0100
 155 #define E2F_OPT_WRITECHECK      0x0200
 156 #define E2F_OPT_COMPRESS_DIRS   0x0400
 157
 158 /*
 159  * E2fsck flags
 160  */
 161 #define E2F_FLAG_ABORT          0x0001 /* Abort signaled */
 162 #define E2F_FLAG_CANCEL         0x0002 /* Cancel signaled */
 163 #define E2F_FLAG_SIGNAL_MASK    0x0003
 164 #define E2F_FLAG_RESTART        0x0004 /* Restart signaled */
 165
 166 #define E2F_FLAG_SETJMP_OK      0x0010 /* Setjmp valid for abort */
 167
 168 #define E2F_FLAG_PROG_BAR       0x0020 /* Progress bar on screen */
 169 #define E2F_FLAG_PROG_SUPPRESS  0x0040 /* Progress suspended */
 170 #define E2F_FLAG_JOURNAL_INODE  0x0080 /* Create a new ext3 journal inode */
 171 #define E2F_FLAG_SB_SPECIFIED   0x0100 /* The superblock was explicitly
 172                                         * specified by the user */
 173 #define E2F_FLAG_RESTARTED      0x0200 /* E2fsck has been restarted */
 174 #define E2F_FLAG_RESIZE_INODE   0x0400 /* Request to recreate resize inode */
 175 #define E2F_FLAG_GOT_DEVSIZE    0x0800 /* Device size has been fetched */
 176
 177 /*
 178  * Defines for indicating the e2fsck pass number
 179  */
 180 #define E2F_PASS_1      1
 181 #define E2F_PASS_2      2
 182 #define E2F_PASS_3      3
 183 #define E2F_PASS_4      4
 184 #define E2F_PASS_5      5
 185 #define E2F_PASS_1B     6
 186
 187 /*
 188  * Define the extended attribute refcount structure
 189  */
 190 typedef struct ea_refcount *ext2_refcount_t;
 191
 192 /*
 193  * This is the global e2fsck structure.
 194  */
 195 typedef struct e2fsck_struct *e2fsck_t;
 196
 197 struct e2fsck_struct {
 198         ext2_filsys fs;
 199         const char *program_name;
 200         char *filesystem_name;
 201         char *device_name;
 202         char *io_options;
 203         int     flags;          /* E2fsck internal flags */
 204         int     options;
 205         blk_t   use_superblock; /* sb requested by user */
 206         blk_t   superblock;     /* sb used to open fs */
 207         int     blocksize;      /* blocksize */
 208         blk_t   num_blocks;     /* Total number of blocks */
 209         int     mount_flags;
 210         blkid_cache blkid;      /* blkid cache */
 211
 212 #ifdef HAVE_SETJMP_H
 213         jmp_buf abort_loc;
 214 #endif
 215         unsigned long abort_code;
 216
 217         int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
 218                         unsigned long max);
 219
 220         ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
 221         ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
 222         ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
 223         ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
 224         ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
 225         ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
 226
 227         ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
 228         ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
 229         ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */
 230
 231         /*
 232          * Inode count arrays
 233          */
 234         ext2_icount_t   inode_count;
 235         ext2_icount_t inode_link_info;
 236
 237         ext2_refcount_t refcount;
 238         ext2_refcount_t refcount_extra;
 239
 240         /*
 241          * Array of flags indicating whether an inode bitmap, block
 242          * bitmap, or inode table is invalid
 243          */
 244         int *invalid_inode_bitmap_flag;
 245         int *invalid_block_bitmap_flag;
 246         int *invalid_inode_table_flag;
 247         int invalid_bitmaps;    /* There are invalid bitmaps/itable */
 248
 249         /*
 250          * Block buffer
 251          */
 252         char *block_buf;
 253
 254         /*
 255          * For pass1_check_directory and pass1_get_blocks
 256          */
 257         ext2_ino_t stashed_ino;
 258         struct ext2_inode *stashed_inode;
 259
 260         /*
 261          * Location of the lost and found directory
 262          */
 263         ext2_ino_t lost_and_found;
 264         int bad_lost_and_found;
 265
 266         /*
 267          * Directory information
 268          */
 269         struct dir_info_db      *dir_info;
 270
 271         /*
 272          * Indexed directory information
 273          */
 274         int             dx_dir_info_count;
 275         int             dx_dir_info_size;
 276         struct dx_dir_info *dx_dir_info;
 277
 278         /*
 279          * Directories to hash
 280          */
 281         ext2_u32_list   dirs_to_hash;
 282
 283         /*
 284          * Tuning parameters
 285          */
 286         int process_inode_size;
 287         int inode_buffer_blocks;
 288
 289         /*
 290          * ext3 journal support
 291          */
 292         io_channel      journal_io;
 293         char    *journal_name;
 294
 295 #ifdef RESOURCE_TRACK
 296         /*
 297          * For timing purposes
 298          */
 299         struct resource_track   global_rtrack;
 300 #endif
 301
 302         /*
 303          * How we display the progress update (for unix)
 304          */
 305         int progress_fd;
 306         int progress_pos;
 307         int progress_last_percent;
 308         unsigned int progress_last_time;
 309         int interactive;        /* Are we connected directly to a tty? */
 310         char start_meta[2], stop_meta[2];
 311
 312         /* File counts */
 313         __u32 fs_directory_count;
 314         __u32 fs_regular_count;
 315         __u32 fs_blockdev_count;
 316         __u32 fs_chardev_count;
 317         __u32 fs_links_count;
 318         __u32 fs_symlinks_count;
 319         __u32 fs_fast_symlinks_count;
 320         __u32 fs_fifo_count;
 321         __u32 fs_total_count;
 322         __u32 fs_badblocks_count;
 323         __u32 fs_sockets_count;
 324         __u32 fs_ind_count;
 325         __u32 fs_dind_count;
 326         __u32 fs_tind_count;
 327         __u32 fs_fragmented;
 328         __u32 large_files;
 329         __u32 fs_ext_attr_inodes;
 330         __u32 fs_ext_attr_blocks;
 331
 332         /* misc fields */
 333         time_t now;
 334         time_t time_fudge;      /* For working around buggy init scripts */
 335         int ext_attr_ver;
 336         profile_t       profile;
 337         int blocks_per_page;
 338
 339         /*
 340          * For the use of callers of the e2fsck functions; not used by
 341          * e2fsck functions themselves.
 342          */
 343         void *priv_data;
 344 };
 345
 346 /* Used by the region allocation code */
 347 typedef __u32 region_addr_t;
 348 typedef struct region_struct *region_t;
 349
 350 #ifndef HAVE_STRNLEN
 351 #define strnlen(str, x) e2fsck_strnlen((str),(x))
 352 extern int e2fsck_strnlen(const char * s, int count);
 353 #endif
 354
 355 /*
 356  * Procedure declarations
 357  */
 358
 359 extern void e2fsck_pass1(e2fsck_t ctx);
 360 extern void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
 361 extern void e2fsck_pass2(e2fsck_t ctx);
 362 extern void e2fsck_pass3(e2fsck_t ctx);
 363 extern void e2fsck_pass4(e2fsck_t ctx);
 364 extern void e2fsck_pass5(e2fsck_t ctx);
 365
 366 /* e2fsck.c */
 367 extern errcode_t e2fsck_allocate_context(e2fsck_t *ret);
 368 extern errcode_t e2fsck_reset_context(e2fsck_t ctx);
 369 extern void e2fsck_free_context(e2fsck_t ctx);
 370 extern int e2fsck_run(e2fsck_t ctx);
 371
 372
 373 /* badblock.c */
 374 extern void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
 375                                  int replace_bad_blocks);
 376
 377 /* dirinfo.c */
 378 extern void e2fsck_add_dir_info(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent);
 379 extern void e2fsck_free_dir_info(e2fsck_t ctx);
 380 extern int e2fsck_get_num_dirinfo(e2fsck_t ctx);
 381 extern struct dir_info_iter *e2fsck_dir_info_iter_begin(e2fsck_t ctx);
 382 extern struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx,
 383                                              struct dir_info_iter *);
 384 extern void e2fsck_dir_info_iter_end(e2fsck_t ctx, struct dir_info_iter *);
 385 extern int e2fsck_dir_info_set_parent(e2fsck_t ctx, ext2_ino_t ino,
 386                                       ext2_ino_t parent);
 387 extern int e2fsck_dir_info_set_dotdot(e2fsck_t ctx, ext2_ino_t ino,
 388                                       ext2_ino_t dotdot);
 389 extern int e2fsck_dir_info_get_parent(e2fsck_t ctx, ext2_ino_t ino,
 390                                       ext2_ino_t *parent);
 391 extern int e2fsck_dir_info_get_dotdot(e2fsck_t ctx, ext2_ino_t ino,
 392                                       ext2_ino_t *dotdot);
 393
 394 /* dx_dirinfo.c */
 395 extern void e2fsck_add_dx_dir(e2fsck_t ctx, ext2_ino_t ino, int num_blocks);
 396 extern struct dx_dir_info *e2fsck_get_dx_dir_info(e2fsck_t ctx, ext2_ino_t ino);
 397 extern void e2fsck_free_dx_dir_info(e2fsck_t ctx);
 398 extern int e2fsck_get_num_dx_dirinfo(e2fsck_t ctx);
 399 extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control);
 400
 401 /* ea_refcount.c */
 402 extern errcode_t ea_refcount_create(int size, ext2_refcount_t *ret);
 403 extern void ea_refcount_free(ext2_refcount_t refcount);
 404 extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
 405                                    int *ret);
 406 extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
 407                                        blk_t blk, int *ret);
 408 extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
 409                                        blk_t blk, int *ret);
 410 extern errcode_t ea_refcount_store(ext2_refcount_t refcount,
 411                                    blk_t blk, int count);
 412 extern blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
 413 extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
 414 extern blk_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
 415
 416 /* ehandler.c */
 417 extern const char *ehandler_operation(const char *op);
 418 extern void ehandler_init(io_channel channel);
 419
 420 /* journal.c */
 421 extern int e2fsck_check_ext3_journal(e2fsck_t ctx);
 422 extern int e2fsck_run_ext3_journal(e2fsck_t ctx);
 423 extern void e2fsck_move_ext3_journal(e2fsck_t ctx);
 424 extern int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx);
 425
 426 /* pass1.c */
 427 extern void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
 428                                     ext2_icount_t *ret);
 429 extern void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool);
 430 extern int e2fsck_pass1_check_device_inode(ext2_filsys fs,
 431                                            struct ext2_inode *inode);
 432 extern int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 433                                       struct ext2_inode *inode, char *buf);
 434 extern void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
 435                                struct ext2_inode *inode, int restart_flag,
 436                                const char *source);
 437
 438 /* pass2.c */
 439 extern int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir,
 440                                     ext2_ino_t ino, char *buf);
 441
 442 /* pass3.c */
 443 extern int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t inode);
 444 extern errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
 445                                          int num, int gauranteed_size);
 446 extern ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix);
 447 extern errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino,
 448                                            int adj);
 449
 450
 451 /* region.c */
 452 extern region_t region_create(region_addr_t min, region_addr_t max);
 453 extern void region_free(region_t region);
 454 extern int region_allocate(region_t region, region_addr_t start, int n);
 455
 456 /* rehash.c */
 457 errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino);
 458 void e2fsck_rehash_directories(e2fsck_t ctx);
 459
 460 /* super.c */
 461 void check_super_block(e2fsck_t ctx);
 462 int check_backup_super_block(e2fsck_t ctx);
 463
 464 /* util.c */
 465 extern void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
 466                                     const char *description);
 467 extern int ask(e2fsck_t ctx, const char * string, int def);
 468 extern int ask_yn(const char * string, int def);
 469 extern void fatal_error(e2fsck_t ctx, const char * fmt_string);
 470 extern void e2fsck_read_bitmaps(e2fsck_t ctx);
 471 extern void e2fsck_write_bitmaps(e2fsck_t ctx);
 472 extern void preenhalt(e2fsck_t ctx);
 473 extern char *string_copy(e2fsck_t ctx, const char *str, int len);
 474 extern errcode_t e2fsck_zero_blocks(ext2_filsys fs, blk_t blk, int num,
 475                                     blk_t *ret_blk, int *ret_count);
 476 #ifdef RESOURCE_TRACK
 477 extern void print_resource_track(const char *desc,
 478                                  struct resource_track *track,
 479                                  io_channel channel);
 480 extern void init_resource_track(struct resource_track *track,
 481                                 io_channel channel);
 482 #endif
 483 extern int inode_has_valid_blocks(struct ext2_inode *inode);
 484 extern void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
 485                               struct ext2_inode * inode, const char * proc);
 486 extern void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino,
 487                                    struct ext2_inode *inode,
 488                                    const int bufsize, const char *proc);
 489 extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
 490                                struct ext2_inode * inode, const char * proc);
 491 extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
 492                                struct ext2_inode * inode, int bufsize,
 493                                const char *proc);
 494 #ifdef MTRACE
 495 extern void mtrace_print(char *mesg);
 496 #endif
 497 extern blk_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs,
 498                            const char *name, io_manager manager);
 499 extern int ext2_file_type(unsigned int mode);
 500
 501 /* unix.c */
 502 extern void e2fsck_clear_progbar(e2fsck_t ctx);
 503 extern int e2fsck_simple_progress(e2fsck_t ctx, const char *label,
 504                                   float percent, unsigned int dpynum);
 505 #endif /* _E2FSCK_H */