+++ /dev/null
-/* $FreeBSD$ */
-/* $NetBSD: msdosfsmount.h,v 1.17 1997/11/17 15:37:07 ws Exp $ */
-
-/*-
- * SPDX-License-Identifier: BSD-4-Clause
- *
- * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
- * Copyright (C) 1994, 1995, 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 _MSDOSFS_MSDOSFSMOUNT_H_
-#define _MSDOSFS_MSDOSFSMOUNT_H_
-
-#include <sys/types.h>
-
-struct vnode;
-struct cdev;
-struct bpb50;
-
-/*
- * Layout of the mount control block for a MSDOSFS filesystem.
- */
-struct msdosfsmount {
- struct vnode *pm_devvp; /* vnode for character device mounted */
- struct cdev *pm_dev; /* character device mounted */
- struct bpb50 pm_bpb; /* BIOS parameter blk for this fs */
- u_long pm_FATsecs; /* actual number of FAT sectors */
- u_long pm_fatblk; /* block # of first FAT */
- u_long pm_rootdirblk; /* block # (cluster # for FAT32) of root directory number */
- u_long pm_rootdirsize; /* size in blocks (not clusters) */
- u_long pm_firstcluster; /* block number of first cluster */
- u_long pm_maxcluster; /* maximum cluster number */
- u_long pm_freeclustercount; /* number of free clusters */
- u_long pm_cnshift; /* shift file offset right this amount to get a cluster number */
- u_long pm_crbomask; /* and a file offset with this mask to get cluster rel offset */
- u_long pm_bnshift; /* shift file offset right this amount to get a block number */
- u_long pm_bpcluster; /* bytes per cluster */
- u_long pm_fmod; /* ~0 if fs is modified, this can rollover to 0 */
- u_long pm_fatblocksize; /* size of FAT blocks in bytes */
- u_long pm_fatblocksec; /* size of FAT blocks in sectors */
- u_long pm_fatsize; /* size of FAT in bytes */
- uint32_t pm_fatmask; /* mask to use for FAT numbers */
- u_long pm_fsinfo; /* fsinfo block number */
- u_long pm_nxtfree; /* next place to search for a free cluster */
- u_int pm_fatmult; /* these 2 values are used in FAT */
- u_int pm_fatdiv; /* offset computation */
- u_int pm_curfat; /* current FAT for FAT32 (0 otherwise) */
- u_int *pm_inusemap; /* ptr to bitmap of in-use clusters */
- uint64_t pm_flags; /* see below */
-};
-
-/* Byte offset in FAT on filesystem pmp, cluster cn */
-#define FATOFS(pmp, cn) ((cn) * (pmp)->pm_fatmult / (pmp)->pm_fatdiv)
-
-/* Number of bits in one pm_inusemap item: */
-#define N_INUSEBITS (8 * sizeof(u_int))
-
-/*
- * Shorthand for fields in the bpb contained in the msdosfsmount structure.
- */
-#define pm_BytesPerSec pm_bpb.bpbBytesPerSec
-#define pm_ResSectors pm_bpb.bpbResSectors
-#define pm_FATs pm_bpb.bpbFATs
-#define pm_RootDirEnts pm_bpb.bpbRootDirEnts
-#define pm_Sectors pm_bpb.bpbSectors
-#define pm_Media pm_bpb.bpbMedia
-#define pm_SecPerTrack pm_bpb.bpbSecPerTrack
-#define pm_Heads pm_bpb.bpbHeads
-#define pm_HiddenSects pm_bpb.bpbHiddenSecs
-#define pm_HugeSectors pm_bpb.bpbHugeSectors
-
-/*
- * Convert pointer to buffer -> pointer to direntry
- */
-#define bptoep(pmp, bp, dirofs) \
- ((struct direntry *)(((bp)->b_data) \
- + ((dirofs) & (pmp)->pm_crbomask)))
-
-/*
- * Convert block number to cluster number
- */
-#define de_bn2cn(pmp, bn) \
- ((bn) >> ((pmp)->pm_cnshift - (pmp)->pm_bnshift))
-
-/*
- * Convert cluster number to block number
- */
-#define de_cn2bn(pmp, cn) \
- ((cn) << ((pmp)->pm_cnshift - (pmp)->pm_bnshift))
-
-/*
- * Convert file offset to cluster number
- */
-#define de_cluster(pmp, off) \
- ((off) >> (pmp)->pm_cnshift)
-
-/*
- * Clusters required to hold size bytes
- */
-#define de_clcount(pmp, size) \
- (((size) + (pmp)->pm_bpcluster - 1) >> (pmp)->pm_cnshift)
-
-/*
- * Convert file offset to block number
- */
-#define de_blk(pmp, off) \
- (de_cn2bn(pmp, de_cluster((pmp), (off))))
-
-/*
- * Convert cluster number to file offset
- */
-#define de_cn2off(pmp, cn) \
- ((cn) << (pmp)->pm_cnshift)
-
-/*
- * Convert block number to file offset
- */
-#define de_bn2off(pmp, bn) \
- ((bn) << (pmp)->pm_bnshift)
-/*
- * Map a cluster number into a filesystem relative block number.
- */
-#define cntobn(pmp, cn) \
- (de_cn2bn((pmp), (cn)-CLUST_FIRST) + (pmp)->pm_firstcluster)
-
-/*
- * Calculate block number for directory entry in root dir, offset dirofs
- */
-#define roottobn(pmp, dirofs) \
- (de_blk((pmp), (dirofs)) + (pmp)->pm_rootdirblk)
-
-/*
- * Calculate block number for directory entry at cluster dirclu, offset
- * dirofs
- */
-#define detobn(pmp, dirclu, dirofs) \
- ((dirclu) == MSDOSFSROOT \
- ? roottobn((pmp), (dirofs)) \
- : cntobn((pmp), (dirclu)))
-
-/*
- * Msdosfs mount options:
- */
-#define MSDOSFSMNT_SHORTNAME 1 /* Force old DOS short names only */
-#define MSDOSFSMNT_LONGNAME 2 /* Force Win'95 long names */
-#define MSDOSFSMNT_NOWIN95 4 /* Completely ignore Win95 entries */
-#define MSDOSFSMNT_KICONV 0x10 /* Use libiconv to convert chars */
-/* All flags above: */
-#define MSDOSFSMNT_MNTOPT \
- (MSDOSFSMNT_SHORTNAME|MSDOSFSMNT_LONGNAME|MSDOSFSMNT_NOWIN95 \
- |MSDOSFSMNT_KICONV)
-#define MSDOSFSMNT_RONLY 0x80000000 /* mounted read-only */
-#define MSDOSFSMNT_WAITONFAT 0x40000000 /* mounted synchronous */
-#define MSDOSFS_FATMIRROR 0x20000000 /* FAT is mirrored */
-#define MSDOSFS_FSIMOD 0x01000000
-
-#endif /* !_MSDOSFS_MSDOSFSMOUNT_H_ */
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