| /*- |
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD |
| * |
| * 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. |
| * |
| * 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. |
| * $NetBSD: ext.h,v 1.6 2000/04/25 23:02:51 jdolecek Exp $ |
| * $FreeBSD$ |
| */ |
| |
| #ifndef EXT_H |
| #define EXT_H |
| |
| #include <sys/types.h> |
| |
| #include <stdbool.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 skipclean; /* skip clean file systems if preening */ |
| extern int allow_mmap; /* allow the use of mmap() */ |
| |
| /* |
| * function declarations |
| */ |
| int ask(int, const char *, ...) __printflike(2, 3); |
| |
| /* |
| * Check the dirty flag. If the file system is clean, then return 1. |
| * Otherwise, return 0 (this includes the case of FAT12 file systems -- |
| * they have no dirty flag, so they must be assumed to be unclean). |
| */ |
| int checkdirty(int, struct bootblock *); |
| |
| /* |
| * Check file system given as arg |
| */ |
| int checkfilesys(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 occurred */ |
| #define FSDIRTY 32 /* File system is dirty */ |
| |
| /* |
| * read a boot block in a machine independent fashion and translate |
| * it into our struct bootblock. |
| */ |
| int readboot(int, struct bootblock *); |
| |
| /* |
| * Correct the FSInfo block. |
| */ |
| int writefsinfo(int, struct bootblock *); |
| |
| /* Opaque type */ |
| struct fat_descriptor; |
| |
| void fat_clear_cl_head(struct fat_descriptor *, cl_t); |
| bool fat_is_cl_head(struct fat_descriptor *, cl_t); |
| |
| cl_t fat_get_cl_next(struct fat_descriptor *, cl_t); |
| |
| int fat_set_cl_next(struct fat_descriptor *, cl_t, cl_t); |
| |
| cl_t fat_allocate_cluster(struct fat_descriptor *fat); |
| |
| struct bootblock* fat_get_boot(struct fat_descriptor *); |
| int fat_get_fd(struct fat_descriptor *); |
| bool fat_is_valid_cl(struct fat_descriptor *, cl_t); |
| |
| /* |
| * Read the FAT 0 and return a pointer to the newly allocated |
| * descriptor of it. |
| */ |
| int readfat(int, struct bootblock *, struct fat_descriptor **); |
| |
| /* |
| * Write back FAT entries |
| */ |
| int writefat(struct fat_descriptor *); |
| |
| /* |
| * Read a directory |
| */ |
| int resetDosDirSection(struct fat_descriptor *); |
| void finishDosDirSection(void); |
| int handleDirTree(struct fat_descriptor *); |
| |
| /* |
| * Cross-check routines run after everything is completely in memory |
| */ |
| int checkchain(struct fat_descriptor *, cl_t, size_t *); |
| |
| /* |
| * Check for lost cluster chains |
| */ |
| int checklost(struct fat_descriptor *); |
| /* |
| * Try to reconnect a lost cluster chain |
| */ |
| int reconnect(struct fat_descriptor *, cl_t, size_t); |
| void finishlf(void); |
| |
| /* |
| * Small helper functions |
| */ |
| /* |
| * Return the type of a reserved cluster as text |
| */ |
| const char *rsrvdcltype(cl_t); |
| |
| /* |
| * Clear a cluster chain in a FAT |
| */ |
| void clearchain(struct fat_descriptor *, cl_t); |
| |
| #endif |