1/* 2 * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank 3 * Copyright (c) 1995 Martin Husemann 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * $NetBSD: ext.h,v 1.6 2000/04/25 23:02:51 jdolecek Exp $ 25 * $FreeBSD: releng/11.0/sbin/fsck_msdosfs/ext.h 268635 2014-07-14 21:32:40Z pfg $ 26 */ 27 28#ifndef EXT_H 29#define EXT_H 30 31#include <sys/types.h> 32 33#include "dosfs.h" 34 35#define LOSTDIR "LOST.DIR" 36 37/* 38 * Options: 39 */ 40extern int alwaysno; /* assume "no" for all questions */ 41extern int alwaysyes; /* assume "yes" for all questions */ 42extern int preen; /* we are preening */ 43extern int rdonly; /* device is opened read only (supersedes above) */ 44extern int skipclean; /* skip clean file systems if preening */ 45 46/* 47 * function declarations 48 */ 49int ask(int, const char *, ...) __printflike(2, 3); 50 51/* 52 * Check the dirty flag. If the file system is clean, then return 1. 53 * Otherwise, return 0 (this includes the case of FAT12 file systems -- 54 * they have no dirty flag, so they must be assumed to be unclean). 55 */ 56int checkdirty(int, struct bootblock *); 57 58/* 59 * Check file system given as arg 60 */ 61int checkfilesys(const char *); 62 63/* 64 * Return values of various functions 65 */ 66#define FSOK 0 /* Check was OK */ 67#define FSBOOTMOD 1 /* Boot block was modified */ 68#define FSDIRMOD 2 /* Some directory was modified */ 69#define FSFATMOD 4 /* The FAT was modified */ 70#define FSERROR 8 /* Some unrecovered error remains */ 71#define FSFATAL 16 /* Some unrecoverable error occurred */ 72#define FSDIRTY 32 /* File system is dirty */ 73#define FSFIXFAT 64 /* Fix file system FAT */ 74 75/* 76 * read a boot block in a machine independent fashion and translate 77 * it into our struct bootblock. 78 */ 79int readboot(int, struct bootblock *); 80 81/* 82 * Correct the FSInfo block. 83 */ 84int writefsinfo(int, struct bootblock *); 85 86/* 87 * Read one of the FAT copies and return a pointer to the new 88 * allocated array holding our description of it. 89 */ 90int readfat(int, struct bootblock *, u_int, struct fatEntry **); 91 92/* 93 * Check two FAT copies for consistency and merge changes into the 94 * first if necessary. 95 */ 96int comparefat(struct bootblock *, struct fatEntry *, struct fatEntry *, u_int); 97 98/* 99 * Check a FAT 100 */ 101int checkfat(struct bootblock *, struct fatEntry *); 102 103/* 104 * Write back FAT entries 105 */ 106int writefat(int, struct bootblock *, struct fatEntry *, int); 107 108/* 109 * Read a directory 110 */ 111int resetDosDirSection(struct bootblock *, struct fatEntry *); 112void finishDosDirSection(void); 113int handleDirTree(int, struct bootblock *, struct fatEntry *); 114 115/* 116 * Cross-check routines run after everything is completely in memory 117 */ 118/* 119 * Check for lost cluster chains 120 */ 121int checklost(int, struct bootblock *, struct fatEntry *); 122/* 123 * Try to reconnect a lost cluster chain 124 */ 125int reconnect(int, struct bootblock *, struct fatEntry *, cl_t); 126void finishlf(void); 127 128/* 129 * Small helper functions 130 */ 131/* 132 * Return the type of a reserved cluster as text 133 */ 134const char *rsrvdcltype(cl_t); 135 136/* 137 * Clear a cluster chain in a FAT 138 */ 139void clearchain(struct bootblock *, struct fatEntry *, cl_t); 140 141#endif 142