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head/usr.sbin/makefs/msdos/fat.h
| Property | Old Value | New Value |
|---|---|---|
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| /* $FreeBSD$ */ | |||||
| /* $NetBSD: fat.h,v 1.12 1997/11/17 15:36:36 ws Exp $ */ | |||||
| /*- | |||||
| * SPDX-License-Identifier: BSD-4-Clause | |||||
| * | |||||
| * Copyright (C) 1994, 1997 Wolfgang Solfrank. | |||||
| * Copyright (C) 1994, 1997 TooLs GmbH. | |||||
| * All rights reserved. | |||||
| * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below). | |||||
| * | |||||
| * 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 TooLs GmbH. | |||||
| * 4. The name of TooLs GmbH may not be used to endorse or promote products | |||||
| * derived from this software without specific prior written permission. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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. | |||||
| */ | |||||
| /*- | |||||
| * Written by Paul Popelka (paulp@uts.amdahl.com) | |||||
| * | |||||
| * You can do anything you want with this software, just don't say you wrote | |||||
| * it, and don't remove this notice. | |||||
| * | |||||
| * This software is provided "as is". | |||||
| * | |||||
| * The author supplies this software to be publicly redistributed on the | |||||
| * understanding that the author is not responsible for the correct | |||||
| * functioning of this software in any circumstances and is not liable for | |||||
| * any damages caused by this software. | |||||
| * | |||||
| * October 1992 | |||||
| */ | |||||
| #ifndef _FS_MSDOSFS_FAT_H_ | |||||
| #define _FS_MSDOSFS_FAT_H_ | |||||
| /* | |||||
| * Some useful cluster numbers. | |||||
| */ | |||||
| #define MSDOSFSROOT 0 /* cluster 0 means the root dir */ | |||||
| #define CLUST_FREE 0 /* cluster 0 also means a free cluster */ | |||||
| #define MSDOSFSFREE CLUST_FREE | |||||
| #define CLUST_FIRST 2 /* first legal cluster number */ | |||||
| #define CLUST_RSRVD 0xfffffff6 /* reserved cluster range */ | |||||
| #define CLUST_BAD 0xfffffff7 /* a cluster with a defect */ | |||||
| #define CLUST_EOFS 0xfffffff8 /* start of eof cluster range */ | |||||
| #define CLUST_EOFE 0xffffffff /* end of eof cluster range */ | |||||
| #define FAT12_MASK 0x00000fff /* mask for 12 bit cluster numbers */ | |||||
| #define FAT16_MASK 0x0000ffff /* mask for 16 bit cluster numbers */ | |||||
| #define FAT32_MASK 0x0fffffff /* mask for FAT32 cluster numbers */ | |||||
| /* | |||||
| * MSDOSFS: | |||||
| * Return true if filesystem uses 12 bit FATs. Microsoft Programmer's | |||||
| * Reference says if the maximum cluster number in a filesystem is greater | |||||
| * than 4084 ((CLUST_RSRVD - CLUST_FIRST) & FAT12_MASK) then we've got a | |||||
| * 16 bit FAT filesystem. While mounting, the result of this test is stored | |||||
| * in pm_fatentrysize. | |||||
| */ | |||||
| #define FAT12(pmp) (pmp->pm_fatmask == FAT12_MASK) | |||||
| #define FAT16(pmp) (pmp->pm_fatmask == FAT16_MASK) | |||||
| #define FAT32(pmp) (pmp->pm_fatmask == FAT32_MASK) | |||||
| #define MSDOSFSEOF(pmp, cn) ((((cn) | ~(pmp)->pm_fatmask) & CLUST_EOFS) == CLUST_EOFS) | |||||
| /* | |||||
| * These are the values for the function argument to the function | |||||
| * fatentry(). | |||||
| */ | |||||
| #define FAT_GET 0x0001 /* get a FAT entry */ | |||||
| #define FAT_SET 0x0002 /* set a FAT entry */ | |||||
| #define FAT_GET_AND_SET (FAT_GET | FAT_SET) | |||||
| /* | |||||
| * Flags to extendfile: | |||||
| */ | |||||
| #define DE_CLEAR 1 /* Zero out the blocks allocated */ | |||||
| struct buf; | |||||
| struct denode; | |||||
| struct msdosfsmount; | |||||
| int pcbmap(struct denode *dep, u_long findcn, daddr_t *bnp, u_long *cnp, int* sp); | |||||
| int clusterfree(struct msdosfsmount *pmp, u_long cn, u_long *oldcnp); | |||||
| int clusteralloc(struct msdosfsmount *pmp, u_long start, u_long count, u_long fillwith, u_long *retcluster, u_long *got); | |||||
| int fatentry(int function, struct msdosfsmount *pmp, u_long cluster, u_long *oldcontents, u_long newcontents); | |||||
| int freeclusterchain(struct msdosfsmount *pmp, u_long startchain); | |||||
| int extendfile(struct denode *dep, u_long count, struct buf **bpp, u_long *ncp, int flags); | |||||
| void fc_purge(struct denode *dep, u_int frcn); | |||||
| #endif /* !_FS_MSDOSFS_FAT_H_ */ | |||||