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FreeBSD/Linux Kernel Cross Reference
sys/msdosfs/direntry.h

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    1 /* $FreeBSD: src/sys/msdosfs/direntry.h,v 1.13.2.1 1999/08/29 16:28:04 peter Exp $ */
    2 /*      $NetBSD: direntry.h,v 1.14 1997/11/17 15:36:32 ws Exp $ */
    3 
    4 /*-
    5  * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
    6  * Copyright (C) 1994, 1995, 1997 TooLs GmbH.
    7  * All rights reserved.
    8  * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below).
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *      This product includes software developed by TooLs GmbH.
   21  * 4. The name of TooLs GmbH may not be used to endorse or promote products
   22  *    derived from this software without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
   25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   27  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   29  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   30  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   34  */
   35 /*
   36  * Written by Paul Popelka (paulp@uts.amdahl.com)
   37  *
   38  * You can do anything you want with this software, just don't say you wrote
   39  * it, and don't remove this notice.
   40  *
   41  * This software is provided "as is".
   42  *
   43  * The author supplies this software to be publicly redistributed on the
   44  * understanding that the author is not responsible for the correct
   45  * functioning of this software in any circumstances and is not liable for
   46  * any damages caused by this software.
   47  *
   48  * October 1992
   49  */
   50 
   51 /*
   52  * Structure of a dos directory entry.
   53  */
   54 struct direntry {
   55         u_int8_t        deName[8];      /* filename, blank filled */
   56 #define SLOT_EMPTY      0x00            /* slot has never been used */
   57 #define SLOT_E5         0x05            /* the real value is 0xe5 */
   58 #define SLOT_DELETED    0xe5            /* file in this slot deleted */
   59         u_int8_t        deExtension[3]; /* extension, blank filled */
   60         u_int8_t        deAttributes;   /* file attributes */
   61 #define ATTR_NORMAL     0x00            /* normal file */
   62 #define ATTR_READONLY   0x01            /* file is readonly */
   63 #define ATTR_HIDDEN     0x02            /* file is hidden */
   64 #define ATTR_SYSTEM     0x04            /* file is a system file */
   65 #define ATTR_VOLUME     0x08            /* entry is a volume label */
   66 #define ATTR_DIRECTORY  0x10            /* entry is a directory name */
   67 #define ATTR_ARCHIVE    0x20            /* file is new or modified */
   68         u_int8_t        deLowerCase;    /* NT VFAT lower case flags */
   69 #define LCASE_BASE      0x08            /* filename base in lower case */
   70 #define LCASE_EXT       0x10            /* filename extension in lower case */
   71         u_int8_t        deCHundredth;   /* hundredth of seconds in CTime */
   72         u_int8_t        deCTime[2];     /* create time */
   73         u_int8_t        deCDate[2];     /* create date */
   74         u_int8_t        deADate[2];     /* access date */
   75         u_int8_t        deHighClust[2]; /* high bytes of cluster number */
   76         u_int8_t        deMTime[2];     /* last update time */
   77         u_int8_t        deMDate[2];     /* last update date */
   78         u_int8_t        deStartCluster[2]; /* starting cluster of file */
   79         u_int8_t        deFileSize[4];  /* size of file in bytes */
   80 };
   81 
   82 /*
   83  * Structure of a Win95 long name directory entry
   84  */
   85 struct winentry {
   86         u_int8_t        weCnt;
   87 #define WIN_LAST        0x40
   88 #define WIN_CNT         0x3f
   89         u_int8_t        wePart1[10];
   90         u_int8_t        weAttributes;
   91 #define ATTR_WIN95      0x0f
   92         u_int8_t        weReserved1;
   93         u_int8_t        weChksum;
   94         u_int8_t        wePart2[12];
   95         u_int16_t       weReserved2;
   96         u_int8_t        wePart3[4];
   97 };
   98 #define WIN_CHARS       13      /* Number of chars per winentry */
   99 
  100 /*
  101  * Maximum filename length in Win95
  102  * Note: Must be < sizeof(dirent.d_name)
  103  */
  104 #define WIN_MAXLEN      255
  105 
  106 /*
  107  * This is the format of the contents of the deTime field in the direntry
  108  * structure.
  109  * We don't use bitfields because we don't know how compilers for
  110  * arbitrary machines will lay them out.
  111  */
  112 #define DT_2SECONDS_MASK        0x1F    /* seconds divided by 2 */
  113 #define DT_2SECONDS_SHIFT       0
  114 #define DT_MINUTES_MASK         0x7E0   /* minutes */
  115 #define DT_MINUTES_SHIFT        5
  116 #define DT_HOURS_MASK           0xF800  /* hours */
  117 #define DT_HOURS_SHIFT          11
  118 
  119 /*
  120  * This is the format of the contents of the deDate field in the direntry
  121  * structure.
  122  */
  123 #define DD_DAY_MASK             0x1F    /* day of month */
  124 #define DD_DAY_SHIFT            0
  125 #define DD_MONTH_MASK           0x1E0   /* month */
  126 #define DD_MONTH_SHIFT          5
  127 #define DD_YEAR_MASK            0xFE00  /* year - 1980 */
  128 #define DD_YEAR_SHIFT           9
  129 
  130 #ifdef KERNEL
  131 struct dirent;
  132 void unix2dostime __P((struct timespec *tsp, u_int16_t *ddp, 
  133              u_int16_t *dtp, u_int8_t *dhp));
  134 void dos2unixtime __P((u_int dd, u_int dt, u_int dh, struct timespec *tsp));
  135 int dos2unixfn __P((u_char dn[11], u_char *un, int lower, int d2u_loaded, u_int8_t *d2u, int ul_loaded, u_int8_t *ul));
  136 int unix2dosfn __P((const u_char *un, u_char dn[12], int unlen, u_int gen, int u2d_loaded, u_int8_t *u2d, int lu_loaded, u_int8_t *lu));
  137 int unix2winfn __P((const u_char *un, int unlen, struct winentry *wep, int cnt, int chksum, int table_loaded, u_int16_t *u2w));
  138 int winChkName __P((const u_char *un, int unlen, struct winentry *wep, int chksum, int u2w_loaded, u_int16_t *u2w, int ul_loaded, u_int8_t *ul));
  139 int win2unixfn __P((struct winentry *wep, struct dirent *dp, int chksum, int table_loaded, u_int16_t *u2w));
  140 u_int8_t winChksum __P((u_int8_t *name));
  141 int winSlotCnt __P((const u_char *un, int unlen));
  142 int winLenFixup __P((const u_char *un, int unlen));
  143 #endif  /* KERNEL */

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