xref: /freebsd/sys/fs/msdosfs/direntry.h (revision 230f8c40e55e3462e90151e30f61bd0fdd4dcda3)
1 /*	$Id$ */
2 /*	$NetBSD: direntry.h,v 1.7 1994/08/21 18:43:54 ws Exp $	*/
3 
4 /*-
5  * Copyright (C) 1994 Wolfgang Solfrank.
6  * Copyright (C) 1994 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_char 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_char deExtension[3];	/* extension, blank filled */
60 	u_char 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_char deReserved[10];	/* reserved */
69 	u_char deTime[2];	/* create/last update time */
70 	u_char deDate[2];	/* create/last update date */
71 	u_char deStartCluster[2]; /* starting cluster of file */
72 	u_char deFileSize[4];	/* size of file in bytes */
73 };
74 
75 /*
76  * This is the format of the contents of the deTime field in the direntry
77  * structure.
78  * We don't use bitfields because we don't know how compilers for
79  * arbitrary machines will lay them out.
80  */
81 #define DT_2SECONDS_MASK	0x1F	/* seconds divided by 2 */
82 #define DT_2SECONDS_SHIFT	0
83 #define DT_MINUTES_MASK		0x7E0	/* minutes */
84 #define DT_MINUTES_SHIFT	5
85 #define DT_HOURS_MASK		0xF800	/* hours */
86 #define DT_HOURS_SHIFT		11
87 
88 /*
89  * This is the format of the contents of the deDate field in the direntry
90  * structure.
91  */
92 #define DD_DAY_MASK		0x1F	/* day of month */
93 #define DD_DAY_SHIFT		0
94 #define DD_MONTH_MASK		0x1E0	/* month */
95 #define DD_MONTH_SHIFT		5
96 #define DD_YEAR_MASK		0xFE00	/* year - 1980 */
97 #define DD_YEAR_SHIFT		9
98 
99 #ifdef KERNEL
100 void unix2dostime __P((struct timespec * tsp, u_short * ddp, u_short * dtp));
101 void dos2unixtime __P((u_short dd, u_short dt, struct timespec * tsp));
102 int dos2unixfn __P((u_char dn[11], u_char * un));
103 void unix2dosfn __P((u_char * un, u_char dn[11], int unlen));
104 #endif	/* KERNEL */
105