1 /* $OpenBSD: ext.h,v 1.13 2015/09/27 16:56:06 guenther Exp $ */ 2 /* $NetBSD: ext.h,v 1.5 1997/10/17 11:19:48 ws Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank 6 * Copyright (c) 1995 Martin Husemann 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef EXT_H 30 #define EXT_H 31 32 #include <sys/types.h> 33 34 #include "dosfs.h" 35 #include "fsutil.h" 36 37 #define LOSTDIR "LOST.DIR" 38 39 /* 40 * Options: 41 */ 42 extern int alwaysno; /* assume "no" for all questions */ 43 extern int alwaysyes; /* assume "yes" for all questions */ 44 extern int preen; /* we are preening */ 45 extern int rdonly; /* device is opened read only (supersedes above) */ 46 47 extern struct disklabel lab; 48 49 /* 50 * function declarations 51 */ 52 int ask(int, const char *, ...) __attribute__((__format__ (printf, 2, 3))); 53 54 /* 55 * Check filesystem given as arg 56 */ 57 int checkfilesys(const char *); 58 59 /* 60 * Return values of various functions 61 */ 62 #define FSOK 0 /* Check was OK */ 63 #define FSBOOTMOD 1 /* Boot block was modified */ 64 #define FSDIRMOD 2 /* Some directory was modified */ 65 #define FSFATMOD 4 /* The FAT was modified */ 66 #define FSERROR 8 /* Some unrecovered error remains */ 67 #define FSFATAL 16 /* Some unrecoverable error occurred */ 68 69 /* 70 * read a boot block in a machine independent fashion and translate 71 * it into our struct bootblock. 72 */ 73 int readboot(int, struct bootblock *); 74 75 /* 76 * Correct the FSInfo block. 77 */ 78 int writefsinfo(int, struct bootblock *); 79 80 /* 81 * Read one of the FAT copies and return a pointer to the new 82 * allocated array holding our description of it. 83 */ 84 int readfat(int, struct bootblock *, int, struct fatEntry **); 85 86 /* 87 * Check two FAT copies for consistency and merge changes into the 88 * first if necessary. 89 */ 90 int comparefat(struct bootblock *, struct fatEntry *, struct fatEntry *, int); 91 92 /* 93 * Check a FAT 94 */ 95 int checkfat(struct bootblock *, struct fatEntry *); 96 97 /* 98 * Write back FAT entries 99 */ 100 int writefat(int, struct bootblock *, struct fatEntry *); 101 102 /* 103 * Read a directory 104 */ 105 int resetDosDirSection(struct bootblock *, struct fatEntry *); 106 void finishDosDirSection(void); 107 int handleDirTree(int, struct bootblock *, struct fatEntry *); 108 109 /* 110 * Cross-check routines run after everything is completely in memory 111 */ 112 /* 113 * Check for lost cluster chains 114 */ 115 int checklost(int, struct bootblock *, struct fatEntry *); 116 /* 117 * Try to reconnect a lost cluster chain 118 */ 119 int reconnect(int, struct bootblock *, struct fatEntry *, cl_t); 120 void finishlf(void); 121 122 /* 123 * Small helper functions 124 */ 125 /* 126 * Return the type of a reserved cluster as text 127 */ 128 char *rsrvdcltype(cl_t); 129 130 /* 131 * Clear a cluster chain in a FAT 132 */ 133 void clearchain(struct bootblock *, struct fatEntry *, cl_t); 134 135 #endif 136