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
read_table (PedDisk* disk)
{
int i;
PC98RawTable table;
PedConstraint* constraint_any;
PED_ASSERT (disk != NULL);
PED_ASSERT (disk->dev != NULL);
constraint_any = ped_constraint_any (disk->dev);
if (!ped_device_read (disk->dev, (void*) &table, 0, 2))
goto error;
if (!pc98_check_magic(&table)) {
if (ped_exception_throw (
PED_EXCEPTION_ERROR, PED_EXCEPTION_IGNORE_CANCEL,
_("Invalid partition table on %s."),
disk->dev->path))
goto error;
}
for (i = 0; i < MAX_PART_COUNT; i++) {
PC98RawPartition* raw_part;
PedPartition* part;
PC98PartitionData* pc98_data;
PedSector part_start;
PedSector part_end;
raw_part = &table.partitions [i];
if (is_unused_partition(raw_part))
continue;
part_start = legacy_start (disk, raw_part);
part_end = legacy_end (disk, raw_part);
part = ped_partition_new (disk, PED_PARTITION_NORMAL,
NULL, part_start, part_end);
if (!part)
goto error;
pc98_data = part->disk_specific;
PED_ASSERT (pc98_data != NULL);
pc98_data->system = (raw_part->mid << 8) | raw_part->sid;
pc98_data->boot = GET_BIT(raw_part->mid, 7);
pc98_data->hidden = !GET_BIT(raw_part->sid, 7);
ped_partition_set_name (part, raw_part->name);
pc98_data->ipl_sector = chs_to_sector (
disk->dev,
PED_LE16_TO_CPU(raw_part->ipl_cyl),
raw_part->ipl_head,
raw_part->ipl_sect);
/* hack */
if (pc98_data->ipl_sector == part->geom.start)
pc98_data->ipl_sector = 0;
part->num = i + 1;
if (!ped_disk_add_partition (disk, part, constraint_any))
goto error;
if (part->geom.start != part_start
|| part->geom.end != part_end) {
ped_exception_throw (
PED_EXCEPTION_NO_FEATURE,
PED_EXCEPTION_CANCEL,
_("Partition %d isn't aligned to cylinder "
"boundaries. This is still unsupported."),
part->num);
goto error;
}
part->fs_type = ped_file_system_probe (&part->geom);
}
ped_constraint_destroy (constraint_any);
return 1;
error:
ped_disk_delete_all (disk);
ped_constraint_destroy (constraint_any);
return 0;
}
