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