static void _xlate_extents(struct pe_disk *extents, uint32_t count)
{
unsigned i;
for (i = 0; i < count; i++) {
extents[i].lv_num = xlate16(extents[i].lv_num);
extents[i].le_num = xlate16(extents[i].le_num);
}
}
static int _has_partition_table(struct device *dev)
{
int ret = 0;
unsigned p;
struct {
uint8_t skip[PART_OFFSET];
struct partition part[4];
uint16_t magic;
} __attribute__((packed)) buf; /* sizeof() == SECTOR_SIZE */
if (!dev_read(dev, UINT64_C(0), sizeof(buf), &buf))
return_0;
/* FIXME Check for other types of partition table too */
/* Check for msdos partition table */
if (buf.magic == xlate16(PART_MAGIC)) {
for (p = 0; p < 4; ++p) {
/* Table is invalid if boot indicator not 0 or 0x80 */
if (buf.part[p].boot_ind & 0x7f) {
ret = 0;
break;
}
/* Must have at least one non-empty partition */
if (buf.part[p].nr_sects)
ret = 1;
}
}
return ret;
}
