/****************************************************************//*                                                              *//*                            buffer.h                          *//*                                                              *//* Sector buffer structure                                      *//*                                                              *//*                      Copyright (c) 2001                      *//*			Bart Oldeman				*//*								*//*			Largely taken from globals.h:		*//*			Copyright (c) 1995, 1996                *//*                      Pasquale J. Villani                     *//*                      All Rights Reserved                     *//*                                                              *//* This file is part of DOS-C.                                  *//*                                                              *//* DOS-C is free software; you can redistribute it and/or       *//* modify it under the terms of the GNU General Public License  *//* as published by the Free Software Foundation; either version *//* 2, or (at your option) any later version.                    *//*                                                              *//* DOS-C is distributed in the hope that it will be useful, but *//* WITHOUT ANY WARRANTY; without even the implied warranty of   *//* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See    *//* the GNU General Public License for more details.             *//*                                                              *//* You should have received a copy of the GNU General Public    *//* License along with DOS-C; see the file COPYING.  If not,     *//* write to the Free Software Foundation, 675 Mass Ave,         *//* Cambridge, MA 02139, USA.                                    *//****************************************************************/#ifdef MAIN#ifdef VERSION_STRINGSstatic BYTE *buffer_hRcsId =    "$Id: buffer.h,v 1.10 2002/12/09 00:17:08 bartoldeman Exp $";#endif#endif#define BUFFERSIZE 512struct buffer {  UWORD b_next;                 /* next buffer in LRU list      */  UWORD b_prev;                 /* previous buffer in LRU list  */  BYTE b_unit;                  /* disk for this buffer         */  BYTE b_flag;                  /* buffer flags                 */  ULONG b_blkno;                /* block for this buffer        */  UBYTE b_copies;               /* number of copies to write    */  UWORD b_offset;               /* offset in sectors between copies                                   to write for FAT sectors     */  struct dpb FAR *b_dpbp;       /* pointer to DPB               */  UWORD b_remotesz;             /* size of remote buffer if remote */  BYTE b_padding;  UBYTE b_buffer[BUFFERSIZE];   /* 512 byte sectors for now     */};#define BFR_DIRTY       0x40    /* buffer modified              */#define BFR_VALID       0x20    /* buffer contains valid data   */#define BFR_DATA        0x08    /* buffer is from data area     */#define BFR_DIR         0x04    /* buffer is from dir area      */#define BFR_FAT         0x02    /* buffer is from fat area      */#define BFR_UNCACHE     0x01    /* buffer to be released ASAP   */