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Diffstat (limited to 'ext.h')
| -rw-r--r-- | ext.h | 150 |
1 files changed, 150 insertions, 0 deletions
@@ -0,0 +1,150 @@ +/* + * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank + * Copyright (c) 1995 Martin Husemann + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Martin Husemann + * and Wolfgang Solfrank. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * $NetBSD: ext.h,v 1.6 2000/04/25 23:02:51 jdolecek Exp $ + * $FreeBSD: src/sbin/fsck_msdosfs/ext.h,v 1.10.20.1 2009/04/15 03:14:26 kensmith Exp $ + */ + +#ifndef EXT_H +#define EXT_H + +#include <sys/types.h> + +#include "dosfs.h" + +#define LOSTDIR "LOST.DIR" + +/* + * Options: + */ +extern int alwaysno; /* assume "no" for all questions */ +extern int alwaysyes; /* assume "yes" for all questions */ +extern int preen; /* we are preening */ +extern int rdonly; /* device is opened read only (supersedes above) */ +extern int skipclean; /* skip clean file systems if preening */ + +extern struct dosDirEntry *rootDir; + +/* + * function declarations + */ +int ask(int, const char *, ...); + +/* + * Check the dirty flag. If the file system is clean, then return 1. + * Otherwise, return 0 (this includes the case of FAT12 file systems -- + * they have no dirty flag, so they must be assumed to be unclean). + */ +int checkdirty(int, struct bootblock *); + +/* + * Check file system given as arg + */ +int checkfilesys(const char *); + +/* + * Return values of various functions + */ +#define FSOK 0 /* Check was OK */ +#define FSBOOTMOD 1 /* Boot block was modified */ +#define FSDIRMOD 2 /* Some directory was modified */ +#define FSFATMOD 4 /* The FAT was modified */ +#define FSERROR 8 /* Some unrecovered error remains */ +#define FSFATAL 16 /* Some unrecoverable error occured */ +#define FSDIRTY 32 /* File system is dirty */ +#define FSFIXFAT 64 /* Fix file system FAT */ + +/* + * read a boot block in a machine independend fashion and translate + * it into our struct bootblock. + */ +int readboot(int, struct bootblock *); + +/* + * Correct the FSInfo block. + */ +int writefsinfo(int, struct bootblock *); + +/* + * Read one of the FAT copies and return a pointer to the new + * allocated array holding our description of it. + */ +int readfat(int, struct bootblock *, int, struct fatEntry **); + +/* + * Check two FAT copies for consistency and merge changes into the + * first if neccessary. + */ +int comparefat(struct bootblock *, struct fatEntry *, struct fatEntry *, int); + +/* + * Check a FAT + */ +int checkfat(struct bootblock *, struct fatEntry *); + +/* + * Write back FAT entries + */ +int writefat(int, struct bootblock *, struct fatEntry *, int); + +/* + * Read a directory + */ +int resetDosDirSection(struct bootblock *, struct fatEntry *); +void finishDosDirSection(void); +int handleDirTree(int, struct bootblock *, struct fatEntry *); + +/* + * Cross-check routines run after everything is completely in memory + */ +/* + * Check for lost cluster chains + */ +int checklost(int, struct bootblock *, struct fatEntry *); +/* + * Try to reconnect a lost cluster chain + */ +int reconnect(int, struct bootblock *, struct fatEntry *, cl_t); +void finishlf(void); + +/* + * Small helper functions + */ +/* + * Return the type of a reserved cluster as text + */ +char *rsrvdcltype(cl_t); + +/* + * Clear a cluster chain in a FAT + */ +void clearchain(struct bootblock *, struct fatEntry *, cl_t); + +#endif |