48d1bcf8e0
- Update bpb structs with reserved fields. - In direntry struct join deName with deExtension. Although a fix was attempted in the past, these fields were being overflowed, Now this is consistent with the spec, and we can now share the WinChksum code with NetBSD. Submitted by: Pedro F. Giffuni <giffunip tutopia com> Mostly obtained from: NetBSD Reviewed by: bde MFC after: 2 weeks
164 lines
6.0 KiB
C
164 lines
6.0 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: direntry.h,v 1.14 1997/11/17 15:36:32 ws Exp $ */
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/*-
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* Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
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* Copyright (C) 1994, 1995, 1997 TooLs GmbH.
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* All rights reserved.
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* Original code by Paul Popelka (paulp@uts.amdahl.com) (see below).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Written by Paul Popelka (paulp@uts.amdahl.com)
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*
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* You can do anything you want with this software, just don't say you wrote
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* it, and don't remove this notice.
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*
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* This software is provided "as is".
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*
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* The author supplies this software to be publicly redistributed on the
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* understanding that the author is not responsible for the correct
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* functioning of this software in any circumstances and is not liable for
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* any damages caused by this software.
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*
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* October 1992
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*/
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#ifndef _FS_MSDOSFS_DIRENTRY_H_
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#define _FS_MSDOSFS_DIRENTRY_H_
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/*
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* Structure of a dos directory entry.
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*/
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struct direntry {
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u_int8_t deName[11]; /* filename, blank filled */
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#define SLOT_EMPTY 0x00 /* slot has never been used */
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#define SLOT_E5 0x05 /* the real value is 0xe5 */
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#define SLOT_DELETED 0xe5 /* file in this slot deleted */
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u_int8_t deAttributes; /* file attributes */
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#define ATTR_NORMAL 0x00 /* normal file */
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#define ATTR_READONLY 0x01 /* file is readonly */
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#define ATTR_HIDDEN 0x02 /* file is hidden */
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#define ATTR_SYSTEM 0x04 /* file is a system file */
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#define ATTR_VOLUME 0x08 /* entry is a volume label */
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#define ATTR_DIRECTORY 0x10 /* entry is a directory name */
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#define ATTR_ARCHIVE 0x20 /* file is new or modified */
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u_int8_t deLowerCase; /* NT VFAT lower case flags */
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#define LCASE_BASE 0x08 /* filename base in lower case */
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#define LCASE_EXT 0x10 /* filename extension in lower case */
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u_int8_t deCHundredth; /* hundredth of seconds in CTime */
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u_int8_t deCTime[2]; /* create time */
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u_int8_t deCDate[2]; /* create date */
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u_int8_t deADate[2]; /* access date */
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u_int8_t deHighClust[2]; /* high bytes of cluster number */
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u_int8_t deMTime[2]; /* last update time */
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u_int8_t deMDate[2]; /* last update date */
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u_int8_t deStartCluster[2]; /* starting cluster of file */
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u_int8_t deFileSize[4]; /* size of file in bytes */
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};
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/*
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* Structure of a Win95 long name directory entry
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*/
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struct winentry {
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u_int8_t weCnt;
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#define WIN_LAST 0x40
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#define WIN_CNT 0x3f
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u_int8_t wePart1[10];
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u_int8_t weAttributes;
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#define ATTR_WIN95 0x0f
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u_int8_t weReserved1;
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u_int8_t weChksum;
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u_int8_t wePart2[12];
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u_int16_t weReserved2;
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u_int8_t wePart3[4];
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};
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#define WIN_CHARS 13 /* Number of chars per winentry */
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/*
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* Maximum number of winentries for a filename.
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*/
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#define WIN_MAXSUBENTRIES 20
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/*
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* Maximum filename length in Win95
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* Note: Must be < sizeof(dirent.d_name)
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*/
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#define WIN_MAXLEN 255
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/*
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* This is the format of the contents of the deTime field in the direntry
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* structure.
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* We don't use bitfields because we don't know how compilers for
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* arbitrary machines will lay them out.
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*/
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#define DT_2SECONDS_MASK 0x1F /* seconds divided by 2 */
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#define DT_2SECONDS_SHIFT 0
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#define DT_MINUTES_MASK 0x7E0 /* minutes */
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#define DT_MINUTES_SHIFT 5
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#define DT_HOURS_MASK 0xF800 /* hours */
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#define DT_HOURS_SHIFT 11
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/*
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* This is the format of the contents of the deDate field in the direntry
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* structure.
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*/
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#define DD_DAY_MASK 0x1F /* day of month */
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#define DD_DAY_SHIFT 0
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#define DD_MONTH_MASK 0x1E0 /* month */
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#define DD_MONTH_SHIFT 5
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#define DD_YEAR_MASK 0xFE00 /* year - 1980 */
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#define DD_YEAR_SHIFT 9
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#ifdef _KERNEL
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struct mbnambuf {
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size_t nb_len;
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int nb_last_id;
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char nb_buf[WIN_MAXLEN + 1];
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};
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struct dirent;
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struct msdosfsmount;
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char *mbnambuf_flush(struct mbnambuf *nbp, struct dirent *dp);
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void mbnambuf_init(struct mbnambuf *nbp);
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void mbnambuf_write(struct mbnambuf *nbp, char *name, int id);
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int dos2unixfn(u_char dn[11], u_char *un, int lower,
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struct msdosfsmount *pmp);
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int unix2dosfn(const u_char *un, u_char dn[12], size_t unlen, u_int gen,
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struct msdosfsmount *pmp);
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int unix2winfn(const u_char *un, size_t unlen, struct winentry *wep, int cnt,
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int chksum, struct msdosfsmount *pmp);
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int winChkName(struct mbnambuf *nbp, const u_char *un, size_t unlen,
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int chksum, struct msdosfsmount *pmp);
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int win2unixfn(struct mbnambuf *nbp, struct winentry *wep, int chksum,
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struct msdosfsmount *pmp);
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u_int8_t winChksum(u_int8_t *name);
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int winSlotCnt(const u_char *un, size_t unlen, struct msdosfsmount *pmp);
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size_t winLenFixup(const u_char *un, size_t unlen);
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#endif /* _KERNEL */
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#endif /* !_FS_MSDOSFS_DIRENTRY_H_ */
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