EMILE/libemile/emile_first_get_param.c

39 lines
918 B
C

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