static int
_amiga_find_free_blocks(const PedDisk *disk, uint32_t *table,
struct LinkedBlock *block, uint32_t first, uint32_t type)
{
PedSector next;
PED_ASSERT(disk != NULL);
PED_ASSERT(disk->dev != NULL);
for (next = first; next != LINK_END; next = PED_BE32_TO_CPU(block->lk_Next)) {
if (table[next] != IDNAME_FREE) {
switch (ped_exception_throw(PED_EXCEPTION_ERROR,
PED_EXCEPTION_FIX | PED_EXCEPTION_IGNORE | PED_EXCEPTION_CANCEL,
_("%s : Loop detected at block %d."), __func__, next))
{
case PED_EXCEPTION_CANCEL :
return 0;
case PED_EXCEPTION_FIX :
/* TODO : Need to add fixing code */
case PED_EXCEPTION_IGNORE :
case PED_EXCEPTION_UNHANDLED :
default :
return 1;
}
}
if (!_amiga_read_block (disk->dev, AMIGA(block), next, NULL)) {
return 0;
}
if (PED_BE32_TO_CPU(block->lk_ID) != type) {
switch (ped_exception_throw(PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("%s : The %s list seems bad at block %s."),
__func__, _amiga_block_id(PED_BE32_TO_CPU(block->lk_ID)), next))
{
/* TODO : to more subtile things here */
case PED_EXCEPTION_CANCEL :
case PED_EXCEPTION_UNHANDLED :
default :
return 0;
}
}
table[next] = type;
if (PED_BE32_TO_CPU(block->lk_ID) == IDNAME_FILESYSHEADER) {
if (_amiga_find_free_blocks(disk, table, block,
PED_BE32_TO_CPU(LNK2(block)->lk2_Linked),
IDNAME_LOADSEG) == 0) return 0;
}
}
return 1;
}
static uint32_t
_amiga_find_rdb (PedDevice *dev, struct RigidDiskBlock *rdb) {
int i;
struct AmigaIds *ids;
ids = _amiga_add_id (IDNAME_RIGIDDISK, NULL);
for (i = 0; i<RDB_LOCATION_LIMIT; i++) {
if (!_amiga_read_block (dev, AMIGA(rdb), i, ids)) {
continue;
}
if (PED_BE32_TO_CPU (rdb->rdb_ID) == IDNAME_RIGIDDISK) {
_amiga_free_ids (ids);
return i;
}
}
_amiga_free_ids (ids);
return AMIGA_RDB_NOT_FOUND;
}
/* We have already allocated a rdb, we are now reading it from the disk */
static int
amiga_read (PedDisk* disk)
{
struct RigidDiskBlock *rdb;
struct PartitionBlock *partition;
uint32_t partblock;
uint32_t partlist[AMIGA_MAX_PARTITIONS];
PedSector cylblocks;
int i;
PED_ASSERT(disk != NULL);
PED_ASSERT(disk->dev != NULL);
PED_ASSERT(disk->dev->sector_size % PED_SECTOR_SIZE_DEFAULT == 0);
PED_ASSERT(disk->disk_specific != NULL);
rdb = RDSK(disk->disk_specific);
if (_amiga_find_rdb (disk->dev, rdb) == AMIGA_RDB_NOT_FOUND) {
ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("%s : Didn't find rdb block, should never happen."), __func__);
return 0;
}
/* Let's copy the rdb read geometry to the dev */
/* FIXME: should this go into disk->dev->bios_geom instead? */
disk->dev->hw_geom.cylinders = PED_BE32_TO_CPU (rdb->rdb_Cylinders);
disk->dev->hw_geom.heads = PED_BE32_TO_CPU (rdb->rdb_Heads);
disk->dev->hw_geom.sectors = PED_BE32_TO_CPU (rdb->rdb_Sectors);
cylblocks = (PedSector) PED_BE32_TO_CPU (rdb->rdb_Heads) *
(PedSector) PED_BE32_TO_CPU (rdb->rdb_Sectors);
/* Remove all partitions in the former in memory table */
ped_disk_delete_all (disk);
/* Let's allocate a partition block */
if (!(partition = ped_malloc (disk->dev->sector_size)))
return 0;
/* We initialize the hardblock free list to detect loops */
for (i = 0; i < AMIGA_MAX_PARTITIONS; i++) partlist[i] = LINK_END;
for (i = 1, partblock = PED_BE32_TO_CPU(rdb->rdb_PartitionList);
i < AMIGA_MAX_PARTITIONS && partblock != LINK_END;
i++, partblock = PED_BE32_TO_CPU(partition->pb_Next))
{
PedPartition *part;
PedSector start, end;
/* Let's look for loops in the partition table */
if (_amiga_loop_check(partblock, partlist, i)) {
break;
}
/* Let's allocate and read a partition block to get its geometry*/
if (!_amiga_read_block (disk->dev, AMIGA(partition),
(PedSector)partblock, NULL)) {
free(partition);
return 0;
}
start = ((PedSector) PED_BE32_TO_CPU (partition->de_LowCyl))
* cylblocks;
end = (((PedSector) PED_BE32_TO_CPU (partition->de_HighCyl))
+ 1) * cylblocks - 1;
/* We can now construct a new partition */
if (!(part = ped_partition_new (disk, PED_PARTITION_NORMAL,
NULL, start, end))) {
free(partition);
return 0;
}
/* And copy over the partition block */
memcpy(part->disk_specific, partition, 256);
part->num = i;
part->type = 0;
/* Let's probe what file system is present on the disk */
part->fs_type = ped_file_system_probe (&part->geom);
PedConstraint *constraint_exact
= ped_constraint_exact (&part->geom);
if (constraint_exact == NULL)
return 0;
bool ok = ped_disk_add_partition (disk, part, constraint_exact);
ped_constraint_destroy (constraint_exact);
if (!ok) {
ped_partition_destroy(part);
free(partition);
return 0;
}
}
free(partition);
return 1;
}
