sys/pcfs/direntry.h

/*
 *  Written by Paul Popelka (paulp@uts.amdahl.com)
 *
 *  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
 *
 *      $Id: direntry.h,v 1.2 1993/10/16 19:29:28 rgrimes Exp $
 */

#ifndef _PCFS_DIRENTRY_H_
#define _PCFS_DIRENTRY_H_ 1

/*
 *  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) */
#endif /* _PCFS_DIRENTRY_H_ */