/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * "Portions Copyright (c) 2000 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.1 (the 'License'). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License." * * @APPLE_LICENSE_HEADER_END@ */ /* * 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. */ #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 quick; /* set to quickly check if volume is dirty */ extern int quiet; /* set to suppress most messages */ extern char *fname; /* filesystem currently checked */ extern struct dosDirEntry *rootDir; /* * function declarations */ int ask __P((int, const char *, ...)); /* * Check filesystem given as arg */ int checkfilesys __P((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 __P((int, struct bootblock *)); /* * Correct the FSInfo block. */ int writefsinfo __P((int, struct bootblock *)); /* * Determine whether a volume is dirty, without reading the entire FAT. */ int isdirty(int fs, struct bootblock *boot, int fat); /* * Read one of the FAT copies and return a pointer to the new * allocated array holding our description of it. */ int readfat __P((int, struct bootblock *, int, struct fatEntry **)); /* * Check two FAT copies for consistency and merge changes into the * first if neccessary. */ int comparefat __P((struct bootblock *, struct fatEntry *, struct fatEntry *, int)); /* * Check a FAT */ int checkfat __P((struct bootblock *, struct fatEntry *)); /* * Write back FAT entries */ int writefat __P((int, struct bootblock *, struct fatEntry *, int)); /* * Read a directory */ int resetDosDirSection __P((struct bootblock *, struct fatEntry *)); void finishDosDirSection __P((void)); int handleDirTree __P((int, struct bootblock *, struct fatEntry *)); /* * Cross-check routines run after everything is completely in memory */ /* * Determine the length of a cluster chain by following its links in the FAT */ cl_t chainlength(struct bootblock *boot, struct fatEntry *fat, cl_t head); /* * Check for lost cluster chains */ int checklost __P((int, struct bootblock *, struct fatEntry *)); /* * Try to reconnect a lost cluster chain */ int reconnect __P((int, struct bootblock *, struct fatEntry *, cl_t)); void finishlf __P((void)); /* * Small helper functions */ /* * Return the type of a reserved cluster as text */ char *rsrvdcltype __P((cl_t)); /* * Clear a cluster chain in a FAT */ void clearchain __P((struct bootblock *, struct fatEntry *, cl_t)); #endif