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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