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#include "kpartx.h"
#include "byteorder.h"
#include <stdio.h>
#include <string.h>
#include "mac.h"
int
read_mac_pt(int fd, __attribute__((unused)) struct slice all,
struct slice *sp, unsigned int ns) {
struct mac_driver_desc *md;
struct mac_partition *part;
unsigned secsize;
char *data;
unsigned int blk, blocks_in_map;
int n = 0;
md = (struct mac_driver_desc *) getblock(fd, 0);
if (md == NULL)
return -1;
if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC)
return -1;
secsize = be16_to_cpu(md->block_size);
data = getblock(fd, secsize/512);
if (!data)
return -1;
part = (struct mac_partition *) (data + secsize%512);
if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC)
return -1;
blocks_in_map = be32_to_cpu(part->map_count);
for (blk = 1; blk <= blocks_in_map && blk <= ns; ++blk, ++n) {
int pos = blk * secsize;
data = getblock(fd, pos/512);
if (!data)
return -1;
part = (struct mac_partition *) (data + pos%512);
if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC)
break;
sp[n].start = be32_to_cpu(part->start_block) * (secsize/512);
sp[n].size = be32_to_cpu(part->block_count) * (secsize/512);
}
return n;
}
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