1 /* $NetBSD: ext.h,v 1.10 2001/09/16 16:34:26 wiz Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank 5 * Copyright (c) 1995 Martin Husemann 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Martin Husemann 18 * and Wolfgang Solfrank. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef EXT_H 36 #define EXT_H 37 38 #include <sys/types.h> 39 40 #include "dosfs.h" 41 42 #define LOSTDIR "LOST.DIR" 43 44 /* 45 * Options: 46 */ 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) */ 51 52 extern char *fname; /* filesystem currently checked */ 53 54 extern struct dosDirEntry *rootDir; 55 56 /* 57 * function declarations 58 */ 59 int ask __P((int, const char *, ...)) __attribute__((__format__(__printf__,2,3))); 60 61 /* 62 * Check filesystem given as arg 63 */ 64 int checkfilesys __P((const char *)); 65 66 /* 67 * Return values of various functions 68 */ 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 occurred */ 75 #define FSDIRTY 32 /* File system is dirty */ 76 #define FSFIXFAT 64 /* Fix file system FAT */ 77 78 /* 79 * read a boot block in a machine independend fashion and translate 80 * it into our struct bootblock. 81 */ 82 int readboot __P((int, struct bootblock *)); 83 84 /* 85 * Correct the FSInfo block. 86 */ 87 int writefsinfo __P((int, struct bootblock *)); 88 89 /* 90 * Read one of the FAT copies and return a pointer to the new 91 * allocated array holding our description of it. 92 */ 93 int readfat __P((int, struct bootblock *, int, struct fatEntry **)); 94 95 /* 96 * Check two FAT copies for consistency and merge changes into the 97 * first if necessary. 98 */ 99 int comparefat __P((struct bootblock *, struct fatEntry *, struct fatEntry *, int)); 100 101 /* 102 * Check a FAT 103 */ 104 int checkfat __P((struct bootblock *, struct fatEntry *)); 105 106 /* 107 * Write back FAT entries 108 */ 109 int writefat __P((int, struct bootblock *, struct fatEntry *, int)); 110 111 /* 112 * Read a directory 113 */ 114 int resetDosDirSection __P((struct bootblock *, struct fatEntry *)); 115 void finishDosDirSection __P((void)); 116 int handleDirTree __P((int, struct bootblock *, struct fatEntry *)); 117 118 /* 119 * Cross-check routines run after everything is completely in memory 120 */ 121 /* 122 * Check for lost cluster chains 123 */ 124 int checklost __P((int, struct bootblock *, struct fatEntry *)); 125 /* 126 * Try to reconnect a lost cluster chain 127 */ 128 int reconnect __P((int, struct bootblock *, struct fatEntry *, cl_t)); 129 void finishlf __P((void)); 130 131 /* 132 * Small helper functions 133 */ 134 /* 135 * Return the type of a reserved cluster as text 136 */ 137 const char *rsrvdcltype __P((cl_t)); 138 139 /* 140 * Clear a cluster chain in a FAT 141 */ 142 void clearchain __P((struct bootblock *, struct fatEntry *, cl_t)); 143 144 #endif 145