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- /*
-
- FIPS - the First nondestructive Interactive Partition Splitting program
-
-
-
- Module hdstruct.cpp
-
-
-
- RCS - Header:
-
- $Header: c:/daten/fips/source/main/RCS/hdstruct.cpp 1.4 1995/01/19 00:20:01 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
-
- */
-
-
-
- #include "types.h"
-
- #include "hdstruct.h"
-
-
-
- root_sector::root_sector (root_sector &rs)
-
- {
-
- drive = rs.drive;
-
- for (int i=0; i<512; i++) data[i] = rs.data[i];
-
- }
-
-
-
- void root_sector::operator= (root_sector &rs)
-
- {
-
- drive = rs.drive;
-
- for (int i=0; i<512; i++) data[i] = rs.data[i];
-
- }
-
-
-
- void harddrive::operator= (harddrive &hd)
-
- {
-
- physical_drive::operator= (hd);
-
- *root_sector = *(hd.root_sector);
-
- partition_table () = hd.partition_table ();
-
- }
-
-
-
- void harddrive::get_partition_table (void)
-
- {
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- partition_table().get (root_sector);
-
-
-
- for (int i = 0; i < 4; i++)
-
- {
-
- class partition_info* p
-
- = &(partition_table().partition_info[i]);
-
-
-
- if (p->system == 0) continue;
-
-
-
- while
-
- (
-
- p->start_sector_abs
-
- > (
-
- (p->start_cylinder + 1000UL)
-
- * geometry.heads
-
- * geometry.sectors
-
- + p->start_head
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- * geometry.sectors
-
- + p->start_sector
-
- - 1
-
- )
-
- )
-
- {
-
- p->start_cylinder += 1024; // more than 1024 cylinders
-
- }
-
-
-
- while
-
- (
-
- (p->start_sector_abs + p->no_of_sectors_abs - 1)
-
- > (
-
- (p->end_cylinder + 1000UL)
-
- * geometry.heads
-
- * geometry.sectors
-
- + p->end_head
-
- * geometry.sectors
-
- + p->end_sector
-
- - 1
-
- )
-
- )
-
- {
-
- p->end_cylinder += 1024; // more than 1024 cylinders
-
- }
-
- }
-
- }
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Extract Partition Table from root sector */
-
- /* ----------------------------------------------------------------------- */
-
-
-
- void partition_table::get (root_sector *root_sector)
-
- {
-
- for (int i=0;i<4;i++)
-
- {
-
- class partition_info *p = &partition_info[i];
-
- byte *pi = &(root_sector->data[0x1be+16*i]);
-
-
-
- p->bootable = *pi;
-
- p->start_head = *(pi+1);
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- p->start_cylinder = *(pi+3) | ((*(pi+2) << 2) & 0x300);
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- p->start_sector = *(pi+2) & 0x3f;
-
- p->system = *(pi+4);
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- p->end_head = *(pi+5);
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- p->end_cylinder = *(pi+7) | ((*(pi+6) << 2) & 0x300);
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- p->end_sector = *(pi+6) & 0x3f;
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- p->start_sector_abs = (dword) *(pi+8) | ((dword) *(pi+9) << 8) | ((dword) *(pi+10) << 16) | ((dword) *(pi+11) << 24);
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- p->no_of_sectors_abs = (dword) *(pi+12) | ((dword) *(pi+13) << 8) | ((dword) *(pi+14) << 16) | ((dword) *(pi+15) << 24);
-
- }
-
- }
-
-
-
-
-
- /* ----------------------------------------------------------------------- */
-
- /* Write Partition Table back into root sector */
-
- /* ----------------------------------------------------------------------- */
-
-
-
- void partition_table::put (root_sector *root_sector)
-
- {
-
- for (int i=0; i<4; i++)
-
- {
-
- class partition_info p = partition_info[i];
-
- byte *pi = &(root_sector->data[0x1be+16*i]);
-
-
-
- *pi = p.bootable;
-
- *(pi+1) = p.start_head;
-
- *(pi+2) = ((p.start_cylinder >> 2) & 0xc0) | (p.start_sector & 0x3f);
-
- *(pi+3) = p.start_cylinder & 0xff;
-
- *(pi+4) = p.system;
-
- *(pi+5) = p.end_head;
-
- *(pi+6) = ((p.end_cylinder >> 2) & 0xc0) | (p.end_sector & 0x3f);
-
- *(pi+7) = p.end_cylinder & 0xff;
-
- *(pi+8) = p.start_sector_abs & 0xff;
-
- *(pi+9) = (p.start_sector_abs >> 8) & 0xff;
-
- *(pi+10) = (p.start_sector_abs >> 16) & 0xff;
-
- *(pi+11) = (p.start_sector_abs >> 24) & 0xff;
-
- *(pi+12) = p.no_of_sectors_abs & 0xff;
-
- *(pi+13) = (p.no_of_sectors_abs >> 8) & 0xff;
-
- *(pi+14) = (p.no_of_sectors_abs >> 16) & 0xff;
-
- *(pi+15) = (p.no_of_sectors_abs >> 24) & 0xff;
-
- }
-
- }
-
-