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 (at) 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 (at) 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 */ 55 struct 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 81 static __inline uint8_t 82 msdos_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 */ 90 struct 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) 130 struct dirent; 131 void msdosfs_unix2dostime(const struct timespec *tsp, int gmtoff, 132 uint16_t *ddp, uint16_t *dtp, uint8_t *dhp); 133 void msdosfs_dos2unixtime(unsigned int dd, unsigned int dt, unsigned int dh, 134 int gmtoff, struct timespec *tsp); 135 int msdosfs_dos2unixfn(unsigned char dn[11], unsigned char *un, int lower); 136 int msdosfs_unix2dosfn(const unsigned char *un, unsigned char dn[12], 137 int unlen, unsigned int gen); 138 int msdosfs_unix2winfn(const unsigned char *un, int unlen, 139 struct winentry *wep, int cnt, int chksum, int utf8); 140 int msdosfs_winChkName(const unsigned char *un, int unlen, 141 struct winentry *wep, int chksum, int utf8); 142 int msdosfs_win2unixfn(struct winentry *wep, struct dirent *dp, int chksum, 143 uint16_t *namlen, int utf8); 144 uint8_t msdosfs_winChksum(uint8_t *name); 145 int msdosfs_winSlotCnt(const unsigned char *un, int unlen, int utf8); 146 #endif /* _KERNEL || MAKEFS */ 147 #endif /* _MSDOSFS_DIRENTRY_H_ */ 148
Indexes created Sun Sep 21 16:09:51 GMT 2025