2 * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank
3 * Copyright (c) 1995 Martin Husemann
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Martin Husemann
16 * and Wolfgang Solfrank.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * $NetBSD: ext.h,v 1.6 2000/04/25 23:02:51 jdolecek Exp $
32 * $FreeBSD: src/sbin/fsck_msdosfs/ext.h,v 1.1.2.1 2001/08/01 05:47:56 obrien Exp $
38 #include <sys/types.h>
42 #define LOSTDIR "LOST.DIR"
47 extern int alwaysno; /* assume "no" for all questions */
48 extern int alwaysyes; /* assume "yes" for all questions */
49 extern int preen; /* we are preening */
50 extern int rdonly; /* device is opened read only (supersedes above) */
52 extern char *fname; /* filesystem currently checked */
54 extern struct dosDirEntry *rootDir;
57 * function declarations
59 int ask __P((int, const char *, ...)) __attribute__((__format__(__printf__,2,3)));
62 * Check filesystem given as arg
64 int checkfilesys __P((const char *));
67 * Return values of various functions
69 #define FSOK 0 /* Check was OK */
70 #define FSBOOTMOD 1 /* Boot block was modified */
71 #define FSDIRMOD 2 /* Some directory was modified */
72 #define FSFATMOD 4 /* The FAT was modified */
73 #define FSERROR 8 /* Some unrecovered error remains */
74 #define FSFATAL 16 /* Some unrecoverable error occured */
75 #define FSDIRTY 32 /* File system is dirty */
76 #define FSFIXFAT 64 /* Fix file system FAT */
79 * read a boot block in a machine independend fashion and translate
80 * it into our struct bootblock.
82 int readboot __P((int, struct bootblock *));
85 * Correct the FSInfo block.
87 int writefsinfo __P((int, struct bootblock *));
90 * Read one of the FAT copies and return a pointer to the new
91 * allocated array holding our description of it.
93 int readfat __P((int, struct bootblock *, int, struct fatEntry **));
96 * Check two FAT copies for consistency and merge changes into the
97 * first if neccessary.
99 int comparefat __P((struct bootblock *, struct fatEntry *, struct fatEntry *, int));
104 int checkfat __P((struct bootblock *, struct fatEntry *));
107 * Write back FAT entries
109 int writefat __P((int, struct bootblock *, struct fatEntry *, int));
114 int resetDosDirSection __P((struct bootblock *, struct fatEntry *));
115 void finishDosDirSection __P((void));
116 int handleDirTree __P((int, struct bootblock *, struct fatEntry *));
119 * Cross-check routines run after everything is completely in memory
122 * Check for lost cluster chains
124 int checklost __P((int, struct bootblock *, struct fatEntry *));
126 * Try to reconnect a lost cluster chain
128 int reconnect __P((int, struct bootblock *, struct fatEntry *, cl_t));
129 void finishlf __P((void));
132 * Small helper functions
135 * Return the type of a reserved cluster as text
137 char *rsrvdcltype __P((cl_t));
140 * Clear a cluster chain in a FAT
142 void clearchain __P((struct bootblock *, struct fatEntry *, cl_t));