Source to pcfs/direntry.h


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/*
 *  Written by Paul Popelka ([email protected])
 *
 *  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
 *
 *	direntry.h,v 1.2 1993/05/20 03:34:06 cgd Exp
 */

/*
 *  Structure of a dos directory entry.
 */
struct direntry {
	u_char 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	*/
	u_char deExtension[3];		/* extension, blank filled	*/
	u_char 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	*/
	char deReserved[10];		/* reserved			*/
	u_short deTime;			/* create/last update time	*/
	u_short deDate;			/* create/last update date	*/
	u_short deStartCluster;		/* starting cluster of file	*/
	u_long deFileSize;		/* size of file in bytes	*/
};

/*
 *  This is the format of the contents of the deTime
 *  field in the direntry structure.
 */
struct DOStime {
	u_short
			dt_2seconds:5,	/* seconds divided by 2		*/
			dt_minutes:6,	/* minutes			*/
			dt_hours:5;	/* hours			*/
};

/*
 *  This is the format of the contents of the deDate
 *  field in the direntry structure.
 */
struct DOSdate {
	u_short
			dd_day:5,	/* day of month			*/
			dd_month:4,	/* month			*/
			dd_year:7;	/* years since 1980		*/
};

union dostime {
	struct DOStime dts;
	u_short dti;
};

union dosdate {
	struct DOSdate dds;
	u_short ddi;
};

/*
 *  The following defines are used to rename fields in
 *  the ufs_specific structure in the nameidata structure
 *  in namei.h
 */
#define	ni_pcfs		ni_ufs
#define	pcfs_count	ufs_count
#define	pcfs_offset	ufs_offset
#define	pcfs_cluster	ufs_ino

#if defined(KERNEL)
void unix2dostime __P((struct timeval *tvp,
			union dosdate *ddp,
			union dostime *dtp));
void dos2unixtime __P((union dosdate *ddp,
			union dostime *dtp,
			struct timeval *tvp));
int  dos2unixfn __P((u_char dn[11], u_char *un));
void unix2dosfn __P((u_char *un, u_char dn[11], int unlen));
#endif /* defined(KERNEL) */