EMILE/libmap/map_read.c

32 lines
532 B
C

/*
*
* (c) 2004-2007 Laurent Vivier <Laurent@Vivier.EU>
*
*/
#include <sys/types.h>
#include <unistd.h>
#include "libmap.h"
int map_read(map_t *map, int part)
{
int ret;
int blocksize = map->device->get_blocksize(map->device->data);
if (map->current == part)
return part;
if (part > read_long((u_int32_t*)&map->partition.MapBlkCnt))
return -1;
ret = map->device->read_sector(map->device->data, 1 + part,
&map->partition, blocksize);
if (ret == -1)
return -1;
map->current = part;
return part;
}