/* $NetBSD: direntry.h,v 1.12 2021/10/23 16:58:17 thorpej Exp $ */ /*- * 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_DIRENTRY_H_ #define _MSDOSFS_DIRENTRY_H_ /* * Structure of a dos directory entry. */ struct direntry { uint8_t deName[8]; /* filename, blank filled */ #define SLOT_EMPTY 0x00 /* slot has never been used */ #define SLOT_E5 0x05 /* the real value is 0xe5 */ #define SLOT_DELETED 0xe5 /* file in this slot deleted */ uint8_t deExtension[3]; /* extension, blank filled */ uint8_t deAttributes; /* file attributes */ #define ATTR_NORMAL 0x00 /* normal file */ #define ATTR_READONLY 0x01 /* file is readonly */ #define ATTR_HIDDEN 0x02 /* file is hidden */ #define ATTR_SYSTEM 0x04 /* file is a system file */ #define ATTR_VOLUME 0x08 /* entry is a volume label */ #define ATTR_DIRECTORY 0x10 /* entry is a directory name */ #define ATTR_ARCHIVE 0x20 /* file is new or modified */ uint8_t deReserved; /* reserved */ uint8_t deCHundredth; /* hundredth of seconds in CTime */ uint8_t deCTime[2]; /* create time */ uint8_t deCDate[2]; /* create date */ uint8_t deADate[2]; /* access date */ uint8_t deHighClust[2]; /* high bytes of cluster number */ uint8_t deMTime[2]; /* last update time */ uint8_t deMDate[2]; /* last update date */ uint8_t deStartCluster[2]; /* starting cluster of file */ uint8_t deFileSize[4]; /* size of file in bytes */ }; static __inline uint8_t msdos_dirchar(const struct direntry *de, size_t i) { return i < sizeof(de->deName) ? de->deName[i] : de->deExtension[i - sizeof(de->deName)]; } /* * Structure of a Win95 long name directory entry */ struct winentry { uint8_t weCnt; #define WIN_LAST 0x40 #define WIN_CNT 0x3f uint8_t wePart1[10]; uint8_t weAttributes; #define ATTR_WIN95 0x0f uint8_t weReserved1; uint8_t weChksum; uint8_t wePart2[12]; uint16_t weReserved2; uint8_t wePart3[4]; }; #define WIN_CHARS 13 /* Number of chars per winentry */ /* * This is the format of the contents of the deTime field in the direntry * structure. * We don't use bitfields because we don't know how compilers for * arbitrary machines will lay them out. */ #define DT_2SECONDS_MASK 0x1F /* seconds divided by 2 */ #define DT_2SECONDS_SHIFT 0 #define DT_MINUTES_MASK 0x7E0 /* minutes */ #define DT_MINUTES_SHIFT 5 #define DT_HOURS_MASK 0xF800 /* hours */ #define DT_HOURS_SHIFT 11 /* * This is the format of the contents of the deDate field in the direntry * structure. */ #define DD_DAY_MASK 0x1F /* day of month */ #define DD_DAY_SHIFT 0 #define DD_MONTH_MASK 0x1E0 /* month */ #define DD_MONTH_SHIFT 5 #define DD_YEAR_MASK 0xFE00 /* year - 1980 */ #define DD_YEAR_SHIFT 9 #if defined(_KERNEL) || defined(MAKEFS) struct dirent; void msdosfs_unix2dostime(const struct timespec *tsp, int gmtoff, uint16_t *ddp, uint16_t *dtp, uint8_t *dhp); void msdosfs_dos2unixtime(unsigned int dd, unsigned int dt, unsigned int dh, int gmtoff, struct timespec *tsp); int msdosfs_dos2unixfn(unsigned char dn[11], unsigned char *un, int lower); int msdosfs_unix2dosfn(const unsigned char *un, unsigned char dn[12], int unlen, unsigned int gen); int msdosfs_unix2winfn(const unsigned char *un, int unlen, struct winentry *wep, int cnt, int chksum, int utf8); int msdosfs_winChkName(const unsigned char *un, int unlen, struct winentry *wep, int chksum, int utf8); int msdosfs_win2unixfn(struct winentry *wep, struct dirent *dp, int chksum, uint16_t *namlen, int utf8); uint8_t msdosfs_winChksum(uint8_t *name); int msdosfs_winSlotCnt(const unsigned char *un, int unlen, int utf8); #endif /* _KERNEL || MAKEFS */ #endif /* _MSDOSFS_DIRENTRY_H_ */
