/***************************************
 * filesys - File System functions for *
 *        all Commodore 8 bit machines *
 **************************************/

struct dirblk {char track; char sector;};
struct dirdts {char year; char month; char day; char hour; char minute; };

struct dirent {
  char filtyp;
  struct dirblk datblk;
  char filnam[15];
  struct dirblk relblk;
  char recsiz;
  char exttyp;
  struct dirdts tstamp;
  char sizelo;
  char sizehi;
  char unused[1];
};

struct dirhdr {
  char dskver;
  char dblsid;
  char dsknam[17];
  char diskid[2];
  char dosver[2];
};

/* Open Directory for Reading   *
 * Args: drv - Drive Identifier *
 *       &dir - Directory Name  *
 * Returns: Directory Channel   *
 *          (0 if Error)        */
char opndir();

/* Read Disk/Directory Header   *
 * Args: dc - Directory Channel *
 *       &de - dirhdr Struct    *
 * Returns: Length of Header    *
 *          (0 if N/A or Error) */
char rdhdr();

/* Read Directory Entry         *
 * Args: dc - Directory Channel *
 *       &de - dirent Struct    *
 * Returns: Length of Entry     *
 *          (0 at End or Error) */
char rddir();

/* Close Directory Channel      *
 * Args: dc - Directory Channel *
 * Returns: Error Code          *
 *           $00 = Successful)  */
char clsdir();