mirror of https://github.com/vivier/EMILE.git
37 lines
743 B
C
37 lines
743 B
C
#include <stdlib.h>
|
|
|
|
#include "libmap.h"
|
|
|
|
int map_update_checksum(map_t *map, int driver_number)
|
|
{
|
|
char *driver;
|
|
int blocksize;
|
|
int block;
|
|
int part;
|
|
int length, checksum;
|
|
int ret;
|
|
|
|
driver = map_read_driver(map, driver_number);
|
|
if (driver == NULL)
|
|
return -1;
|
|
|
|
blocksize = map_get_blocksize(map);
|
|
block = read_long((u_int32_t*)&map->drivers.DrvInfo[driver_number].Block);
|
|
|
|
part = map_seek_driver_partition(map, block * blocksize / 512);
|
|
|
|
map_read(map, part);
|
|
|
|
length = read_long((u_int32_t*)&map->partition.BootSize);
|
|
checksum = map_checksum((unsigned char*)driver, length);
|
|
write_long((u_int32_t*)&map->partition.BootCksum, checksum);
|
|
|
|
free(driver);
|
|
|
|
ret = map_write(map, part);
|
|
if (ret != part)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|