static int
pc98_probe (const PedDevice *dev)
{
PC98RawTable part_table;
int empty;
const PC98RawPartition* p;
PED_ASSERT (dev != NULL);
if (dev->sector_size != 512)
return 0;
if (!ped_device_read (dev, &part_table, 0, 2))
return 0;
/* check magic */
if (!pc98_check_magic (&part_table))
return 0;
/* check consistency */
empty = 1;
for (p = part_table.partitions;
p < part_table.partitions + MAX_PART_COUNT;
p++)
{
if (p->mid == 0 && p->sid == 0)
continue;
empty = 0;
if (!check_partition_consistency (dev, p))
return 0;
}
/* check boot loader */
if (pc98_check_ipl_signature (&part_table))
return 1;
else if (part_table.boot_code[0]) /* invalid boot loader */
return 0;
/* Not to mistake msdos disk map for PC-9800's empty disk map */
if (empty)
return 0;
return 1;
}
static int
pc98_probe (const PedDevice *dev)
{
PC98RawTable part_table;
PED_ASSERT (dev != NULL);
if (dev->sector_size != 512)
return 0;
if (!ped_device_read (dev, &part_table, 0, 2))
return 0;
/* check magic */
if (!pc98_check_magic (&part_table))
return 0;
/* check for boot loader signatures */
return pc98_check_ipl_signature (&part_table);
}
static int
pc98_write (const PedDisk* disk)
{
PedPartition* part;
int i;
PED_ASSERT (disk != NULL);
PED_ASSERT (disk->dev != NULL);
void *s0;
if (!ptt_read_sectors (disk->dev, 0, 2, &s0))
return 0;
PC98RawTable *table = s0;
if (!pc98_check_ipl_signature (table)) {
memset (table->boot_code, 0, sizeof(table->boot_code));
memcpy (table->boot_code, MBR_BOOT_CODE, sizeof(MBR_BOOT_CODE));
}
memset (table->partitions, 0, sizeof (table->partitions));
table->magic = PED_CPU_TO_LE16(PC9800_EXTFMT_MAGIC);
for (i = 1; i <= MAX_PART_COUNT; i++) {
part = ped_disk_get_partition (disk, i);
if (!part)
continue;
if (!fill_raw_part (&table->partitions [i - 1], part))
return 0;
}
int write_ok = ped_device_write (disk->dev, table, 0, 2);
free (s0);
if (!write_ok)
return 0;
return ped_device_sync (disk->dev);
}