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- /*
-
- FIPS - the First nondestructive Interactive Partition Splitting program
-
-
-
- Module disk_io.h
-
-
-
- RCS - Header:
-
- $Header: c:/daten/fips/source/main/RCS/disk_io.h 1.4 1995/01/19 00:01:25 schaefer Exp schaefer $
-
-
-
- Copyright (C) 1993 Arno Schaefer
-
-
-
- This program 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 of the License, or
-
- (at your option) any later version.
-
-
-
- This program 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 this program; if not, write to the Free Software
-
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
-
-
-
- Report problems and direct all questions to:
-
-
-
- schaefer@rbg.informatik.th-darmstadt.de
-
- */
-
-
-
- #ifndef DISK_IO_H
-
- #define DISK_IO_H
-
-
-
- #include "types.h"
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Structure to hold information about the drive geometry */
-
- /* ----------------------------------------------------------------------- */
-
-
-
- struct drive_geometry
-
- {
-
- dword heads;
-
- dword cylinders;
-
- dword sectors;
-
- };
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Low level structure physical_drive, contains drive number and geometry, */
-
- /* as well as low level sector read and write routines */
-
- /* Geometry is determined on initialization, errorcode contains error */
-
- /* number after call to get_geometry() and reset(). */
-
- /* Initialization requires number (e.g. physical_drive drive1 (0x80);). */
-
- /* */
-
- /* Read and write are called max. 3 times in case of failure, return code */
-
- /* contains 0 if successful. Sector CRC is verified after write. */
-
- /* sector_number is absolute logical sector number (0 = master boot record)*/
-
- /* ----------------------------------------------------------------------- */
-
-
-
- class physical_drive
-
- {
-
- protected:
-
- virtual void get_geometry (void);
-
-
-
- public:
-
- // constructors & operators
-
-
-
- physical_drive (int number);
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- physical_drive (physical_drive &pd);
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- void operator= (physical_drive &pd);
-
-
-
- // public data
-
-
-
- int number;
-
- int errorcode;
-
- drive_geometry geometry;
-
-
-
- // functions
-
-
-
- virtual void reset (void);
-
-
-
- int read_sector (struct sector* sector, dword sector_number);
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- int write_sector (struct sector* sector, dword sector_number);
-
- };
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Physical_sector_no holds and calculates physical sector number (Head, */
-
- /* Cylinder, Sector). Number is calculated on initialization. Log_sector */
-
- /* is absolute logical sector number (0 = master boot record). Usage: */
-
- /* physical_sector_no mbr (0,geometry); */
-
- /* physical_sector_no mbr (0,0,1); */
-
- /* ----------------------------------------------------------------------- */
-
-
-
- struct physical_sector_no
-
- {
-
- // public data
-
-
-
- dword head;
-
- dword cylinder;
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- dword sector;
-
-
-
- // constructors
-
-
-
- physical_sector_no (dword logical_sector, const drive_geometry &geometry);
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- physical_sector_no (dword head, dword cylinder, dword sector)
-
- {
-
- physical_sector_no::head = head;
-
- physical_sector_no::cylinder = cylinder;
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- physical_sector_no::sector = sector;
-
- }
-
- };
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Structure sector - contains only sector data */
-
- /* ----------------------------------------------------------------------- */
-
-
-
- struct sector
-
- {
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- byte data[512];
-
- };
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Prototype for bios call get_disk_type - returns 0 if drive not present. */
-
- /* Valid drive numbers: 0 - 255, result: 1 - floppy without disk change */
-
- /* detection, 2 - floppy with disk change detection, 3 - harddisk */
-
- /* ----------------------------------------------------------------------- */
-
-
-
- int get_disk_type (int drive_number);
-
-
-
- /* Bios call get_no_of_drives */
-
-
-
- int get_no_of_drives (void);
-
-
-
- #endif
-
-