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 * 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. 20 * 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 * 32 * $NetBSD: ext.h,v 1.6 2000/04/25 23:02:51 jdolecek Exp $ 33 * $FreeBSD: src/sbin/fsck_msdosfs/ext.h,v 1.1.2.1 2001/08/01 05:47:56 obrien Exp $ 34 */ 35 36 #ifndef EXT_H 37 #define EXT_H 38 39 #include <sys/types.h> 40 41 #include "dosfs.h" 42 43 #define LOSTDIR "LOST.DIR" 44 45 /* 46 * Options: 47 */ 48 extern int alwaysno; /* assume "no" for all questions */ 49 extern int alwaysyes; /* assume "yes" for all questions */ 50 extern int preen; /* we are preening */ 51 extern int rdonly; /* device is opened read only (supersedes above) */ 52 53 extern char *fname; /* filesystem currently checked */ 54 55 extern struct dosDirEntry *rootDir; 56 57 /* 58 * function declarations 59 */ 60 int ask(int, const char *, ...) __printflike(2, 3); 61 62 /* 63 * Check filesystem given as arg 64 */ 65 int checkfilesys(const char *); 66 67 /* 68 * Return values of various functions 69 */ 70 #define FSOK 0 /* Check was OK */ 71 #define FSBOOTMOD 1 /* Boot block was modified */ 72 #define FSDIRMOD 2 /* Some directory was modified */ 73 #define FSFATMOD 4 /* The FAT was modified */ 74 #define FSERROR 8 /* Some unrecovered error remains */ 75 #define FSFATAL 16 /* Some unrecoverable error occured */ 76 #define FSDIRTY 32 /* File system is dirty */ 77 #define FSFIXFAT 64 /* Fix file system FAT */ 78 79 /* 80 * read a boot block in a machine independend fashion and translate 81 * it into our struct bootblock. 82 */ 83 int readboot(int, struct bootblock *); 84 85 /* 86 * Correct the FSInfo block. 87 */ 88 int writefsinfo(int, struct bootblock *); 89 90 /* 91 * Read one of the FAT copies and return a pointer to the new 92 * allocated array holding our description of it. 93 */ 94 int readfat(int, struct bootblock *, int, struct fatEntry **); 95 96 /* 97 * Check two FAT copies for consistency and merge changes into the 98 * first if neccessary. 99 */ 100 int comparefat(struct bootblock *, struct fatEntry *, struct fatEntry *, int); 101 102 /* 103 * Check a FAT 104 */ 105 int checkfat(struct bootblock *, struct fatEntry *); 106 107 /* 108 * Write back FAT entries 109 */ 110 int writefat(int, struct bootblock *, struct fatEntry *, int); 111 112 /* 113 * Read a directory 114 */ 115 int resetDosDirSection(struct bootblock *, struct fatEntry *); 116 void finishDosDirSection(void); 117 int handleDirTree(int, struct bootblock *, struct fatEntry *); 118 119 /* 120 * Cross-check routines run after everything is completely in memory 121 */ 122 /* 123 * Check for lost cluster chains 124 */ 125 int checklost(int, struct bootblock *, struct fatEntry *); 126 /* 127 * Try to reconnect a lost cluster chain 128 */ 129 int reconnect(int, struct bootblock *, struct fatEntry *, cl_t); 130 void finishlf(void); 131 132 /* 133 * Small helper functions 134 */ 135 /* 136 * Return the type of a reserved cluster as text 137 */ 138 char *rsrvdcltype(cl_t); 139 140 /* 141 * Clear a cluster chain in a FAT 142 */ 143 void clearchain(struct bootblock *, struct fatEntry *, cl_t); 144 145 #endif 146