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68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
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/******************************************************************
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Copyright (C) 2009 Henrik Carlqvist
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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******************************************************************/
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#include <stdio.h>
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#include "file.h"
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#include "partition_info.h"
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int write_partition_number_of_heads(FILE *fp, int iHeads)
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{
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unsigned char aucBuf[2];
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unsigned short s = (unsigned short) iHeads;
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if(!s)
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return 0;
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/* Converting a number like this is not necessary as long as we are on
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i386 compatible CPUs, however, the following code might make the program
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more portable... */
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aucBuf[0] = (unsigned char)(s & 0xff);
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aucBuf[1] = (unsigned char)((s & 0xff00) >> 8);
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return write_data(fp, 0x1a, aucBuf, 2);
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} /* write_partition_number_of_heads */
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int write_partition_start_sector_number(FILE *fp, int iStartSector)
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{
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unsigned char aucBuf[4];
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unsigned long l = (unsigned long)iStartSector;
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if(!l)
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return 0;
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/* Converting a number like this is not necessary as long as we are on
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i386 compatible CPUs, however, the following code might make the program
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more portable... */
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aucBuf[0] = (unsigned char)(l & 0xff);
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aucBuf[1] = (unsigned char)((l & 0xff00) >> 8);
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aucBuf[2] = (unsigned char)((l & 0xff0000) >> 16);
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aucBuf[3] = (unsigned char)((l & 0xff000000) >> 24);
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return write_data(fp, 0x1c, aucBuf, 4);
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} /* write_partition_start_sector_number */
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int write_partition_physical_disk_drive_id_fat32(FILE *fp)
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{
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unsigned char ucId = 0x80; /* C: */
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return write_data(fp, 0x40, &ucId, 1);
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} /* write_partition_physical_disk_drive_id_fat32 */
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int write_partition_physical_disk_drive_id_fat16(FILE *fp)
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{
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unsigned char ucId = 0x80; /* C: */
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return write_data(fp, 0x24, &ucId, 1);
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} /* write_partition_physical_disk_drive_id_fat16 */
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