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; }