EMILE/libemile/emile_first_get_param.c

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static __attribute__((used)) char* rcsid = "$CVSHeader$";
/*
*
* (c) 2004 Laurent Vivier <Laurent@Vivier.EU>
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*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include "libemile.h"
#include "emile.h"
#include "bootblock.h"
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int emile_first_get_param(int fd, int *drive_num, int *second_offset,
int *second_size)
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{
eBootBlock_t firstBlock;
int ret;
ret = read(fd, &firstBlock, sizeof(firstBlock));
if (ret != sizeof(firstBlock))
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return EEMILE_CANNOT_READ_FIRST;
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if ( strncmp( (char*)firstBlock.boot_block_header.SysName+1,
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"Mac Bootloader", 14) == 0 )
{
*drive_num = read_short((u_int16_t*)&firstBlock.second_param_block.ioVRefNum);
*second_offset = read_long((u_int32_t*)&firstBlock.second_param_block.ioPosOffset);
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*second_size = read_long(&firstBlock.second_param_block.ioReqCount);
}
else
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return EEMILE_UNKNOWN_FIRST;
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return 0;
}