1/* $NetBSD: direntry.h,v 1.12 2021/10/23 16:58:17 thorpej Exp $ */ 2 3/*- 4 * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank. 5 * Copyright (C) 1994, 1995, 1997 TooLs GmbH. 6 * All rights reserved. 7 * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below). 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by TooLs GmbH. 20 * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34/* 35 * Written by Paul Popelka (paulp@uts.amdahl.com) 36 * 37 * You can do anything you want with this software, just don't say you wrote 38 * it, and don't remove this notice. 39 * 40 * This software is provided "as is". 41 * 42 * The author supplies this software to be publicly redistributed on the 43 * understanding that the author is not responsible for the correct 44 * functioning of this software in any circumstances and is not liable for 45 * any damages caused by this software. 46 * 47 * October 1992 48 */ 49#ifndef _MSDOSFS_DIRENTRY_H_ 50#define _MSDOSFS_DIRENTRY_H_ 51 52/* 53 * Structure of a dos directory entry. 54 */ 55struct direntry { 56 uint8_t deName[8]; /* filename, blank filled */ 57#define SLOT_EMPTY 0x00 /* slot has never been used */ 58#define SLOT_E5 0x05 /* the real value is 0xe5 */ 59#define SLOT_DELETED 0xe5 /* file in this slot deleted */ 60 uint8_t deExtension[3]; /* extension, blank filled */ 61 uint8_t deAttributes; /* file attributes */ 62#define ATTR_NORMAL 0x00 /* normal file */ 63#define ATTR_READONLY 0x01 /* file is readonly */ 64#define ATTR_HIDDEN 0x02 /* file is hidden */ 65#define ATTR_SYSTEM 0x04 /* file is a system file */ 66#define ATTR_VOLUME 0x08 /* entry is a volume label */ 67#define ATTR_DIRECTORY 0x10 /* entry is a directory name */ 68#define ATTR_ARCHIVE 0x20 /* file is new or modified */ 69 uint8_t deReserved; /* reserved */ 70 uint8_t deCHundredth; /* hundredth of seconds in CTime */ 71 uint8_t deCTime[2]; /* create time */ 72 uint8_t deCDate[2]; /* create date */ 73 uint8_t deADate[2]; /* access date */ 74 uint8_t deHighClust[2]; /* high bytes of cluster number */ 75 uint8_t deMTime[2]; /* last update time */ 76 uint8_t deMDate[2]; /* last update date */ 77 uint8_t deStartCluster[2]; /* starting cluster of file */ 78 uint8_t deFileSize[4]; /* size of file in bytes */ 79}; 80 81static __inline uint8_t 82msdos_dirchar(const struct direntry *de, size_t i) { 83 return i < sizeof(de->deName) ? de->deName[i] : 84 de->deExtension[i - sizeof(de->deName)]; 85} 86 87/* 88 * Structure of a Win95 long name directory entry 89 */ 90struct winentry { 91 uint8_t weCnt; 92#define WIN_LAST 0x40 93#define WIN_CNT 0x3f 94 uint8_t wePart1[10]; 95 uint8_t weAttributes; 96#define ATTR_WIN95 0x0f 97 uint8_t weReserved1; 98 uint8_t weChksum; 99 uint8_t wePart2[12]; 100 uint16_t weReserved2; 101 uint8_t wePart3[4]; 102}; 103#define WIN_CHARS 13 /* Number of chars per winentry */ 104 105/* 106 * This is the format of the contents of the deTime field in the direntry 107 * structure. 108 * We don't use bitfields because we don't know how compilers for 109 * arbitrary machines will lay them out. 110 */ 111#define DT_2SECONDS_MASK 0x1F /* seconds divided by 2 */ 112#define DT_2SECONDS_SHIFT 0 113#define DT_MINUTES_MASK 0x7E0 /* minutes */ 114#define DT_MINUTES_SHIFT 5 115#define DT_HOURS_MASK 0xF800 /* hours */ 116#define DT_HOURS_SHIFT 11 117 118/* 119 * This is the format of the contents of the deDate field in the direntry 120 * structure. 121 */ 122#define DD_DAY_MASK 0x1F /* day of month */ 123#define DD_DAY_SHIFT 0 124#define DD_MONTH_MASK 0x1E0 /* month */ 125#define DD_MONTH_SHIFT 5 126#define DD_YEAR_MASK 0xFE00 /* year - 1980 */ 127#define DD_YEAR_SHIFT 9 128 129#if defined(_KERNEL) || defined(MAKEFS) 130struct dirent; 131void msdosfs_unix2dostime(const struct timespec *tsp, int gmtoff, 132 uint16_t *ddp, uint16_t *dtp, uint8_t *dhp); 133void msdosfs_dos2unixtime(unsigned int dd, unsigned int dt, unsigned int dh, 134 int gmtoff, struct timespec *tsp); 135int msdosfs_dos2unixfn(unsigned char dn[11], unsigned char *un, int lower); 136int msdosfs_unix2dosfn(const unsigned char *un, unsigned char dn[12], 137 int unlen, unsigned int gen); 138int msdosfs_unix2winfn(const unsigned char *un, int unlen, 139 struct winentry *wep, int cnt, int chksum, int utf8); 140int msdosfs_winChkName(const unsigned char *un, int unlen, 141 struct winentry *wep, int chksum, int utf8); 142int msdosfs_win2unixfn(struct winentry *wep, struct dirent *dp, int chksum, 143 uint16_t *namlen, int utf8); 144uint8_t msdosfs_winChksum(uint8_t *name); 145int msdosfs_winSlotCnt(const unsigned char *un, int unlen, int utf8); 146#endif /* _KERNEL || MAKEFS */ 147#endif /* _MSDOSFS_DIRENTRY_H_ */ 148