/* * Copyright (C) 2007 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #include "ctree.h" #include "disk-io.h" #include "print-tree.h" static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk) { int num_stripes = btrfs_chunk_num_stripes(eb, chunk); int i; printk("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n", (unsigned long long)btrfs_chunk_length(eb, chunk), (unsigned long long)btrfs_chunk_owner(eb, chunk), (unsigned long long)btrfs_chunk_type(eb, chunk), num_stripes); for (i = 0 ; i < num_stripes ; i++) { printk("\t\t\tstripe %d devid %llu offset %llu\n", i, (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i), (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i)); } } static void print_dev_item(struct extent_buffer *eb, struct btrfs_dev_item *dev_item) { printk("\t\tdev item devid %llu " "total_bytes %llu bytes used %Lu\n", (unsigned long long)btrfs_device_id(eb, dev_item), (unsigned long long)btrfs_device_total_bytes(eb, dev_item), (unsigned long long)btrfs_device_bytes_used(eb, dev_item)); } void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) { int i; u32 nr = btrfs_header_nritems(l); struct btrfs_item *item; struct btrfs_extent_item *ei; struct btrfs_root_item *ri; struct btrfs_dir_item *di; struct btrfs_inode_item *ii; struct btrfs_block_group_item *bi; struct btrfs_file_extent_item *fi; struct btrfs_key key; struct btrfs_key found_key; struct btrfs_extent_ref *ref; struct btrfs_dev_extent *dev_extent; u32 type; printk("leaf %llu total ptrs %d free space %d\n", (unsigned long long)btrfs_header_bytenr(l), nr, btrfs_leaf_free_space(root, l)); for (i = 0 ; i < nr ; i++) { item = btrfs_item_nr(l, i); btrfs_item_key_to_cpu(l, &key, i); type = btrfs_key_type(&key); printk("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n", i, (unsigned long long)key.objectid, type, (unsigned long long)key.offset, btrfs_item_offset(l, item), btrfs_item_size(l, item)); switch (type) { case BTRFS_INODE_ITEM_KEY: ii = btrfs_item_ptr(l, i, struct btrfs_inode_item); printk("\t\tinode generation %llu size %llu mode %o\n", (unsigned long long)btrfs_inode_generation(l, ii), (unsigned long long)btrfs_inode_size(l, ii), btrfs_inode_mode(l, ii)); break; case BTRFS_DIR_ITEM_KEY: di = btrfs_item_ptr(l, i, struct btrfs_dir_item); btrfs_dir_item_key_to_cpu(l, di, &found_key); printk("\t\tdir oid %llu type %u\n", (unsigned long long)found_key.objectid, btrfs_dir_type(l, di)); break; case BTRFS_ROOT_ITEM_KEY: ri = btrfs_item_ptr(l, i, struct btrfs_root_item); printk("\t\troot data bytenr %llu refs %u\n", (unsigned long long)btrfs_disk_root_bytenr(l, ri), btrfs_disk_root_refs(l, ri)); break; case BTRFS_EXTENT_ITEM_KEY: ei = btrfs_item_ptr(l, i, struct btrfs_extent_item); printk("\t\textent data refs %u\n", btrfs_extent_refs(l, ei)); break; case BTRFS_EXTENT_REF_KEY: ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref); printk("\t\textent back ref root %llu gen %llu " "owner %llu num_refs %lu\n", (unsigned long long)btrfs_ref_root(l, ref), (unsigned long long)btrfs_ref_generation(l, ref), (unsigned long long)btrfs_ref_objectid(l, ref), (unsigned long)btrfs_ref_num_refs(l, ref)); break; case BTRFS_EXTENT_DATA_KEY: fi = btrfs_item_ptr(l, i, struct btrfs_file_extent_item); if (btrfs_file_extent_type(l, fi) == BTRFS_FILE_EXTENT_INLINE) { printk("\t\tinline extent data size %u\n", btrfs_file_extent_inline_len(l, item)); break; } printk("\t\textent data disk bytenr %llu nr %llu\n", (unsigned long long)btrfs_file_extent_disk_bytenr(l, fi), (unsigned long long)btrfs_file_extent_disk_num_bytes(l, fi)); printk("\t\textent data offset %llu nr %llu\n", (unsigned long long)btrfs_file_extent_offset(l, fi), (unsigned long long)btrfs_file_extent_num_bytes(l, fi)); break; case BTRFS_BLOCK_GROUP_ITEM_KEY: bi = btrfs_item_ptr(l, i, struct btrfs_block_group_item); printk("\t\tblock group used %llu\n", (unsigned long long)btrfs_disk_block_group_used(l, bi)); break; case BTRFS_CHUNK_ITEM_KEY: print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk)); break; case BTRFS_DEV_ITEM_KEY: print_dev_item(l, btrfs_item_ptr(l, i, struct btrfs_dev_item)); break; case BTRFS_DEV_EXTENT_KEY: dev_extent = btrfs_item_ptr(l, i, struct btrfs_dev_extent); printk("\t\tdev extent chunk_tree %llu\n" "\t\tchunk objectid %llu chunk offset %llu " "length %llu\n", (unsigned long long) btrfs_dev_extent_chunk_tree(l, dev_extent), (unsigned long long) btrfs_dev_extent_chunk_objectid(l, dev_extent), (unsigned long long) btrfs_dev_extent_chunk_offset(l, dev_extent), (unsigned long long) btrfs_dev_extent_length(l, dev_extent)); }; } } void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c) { int i; u32 nr; struct btrfs_key key; int level; if (!c) return; nr = btrfs_header_nritems(c); level = btrfs_header_level(c); if (level == 0) { btrfs_print_leaf(root, c); return; } printk("node %llu level %d total ptrs %d free spc %u\n", (unsigned long long)btrfs_header_bytenr(c), btrfs_header_level(c), nr, (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr); for (i = 0; i < nr; i++) { btrfs_node_key_to_cpu(c, &key, i); printk("\tkey %d (%llu %u %llu) block %llu\n", i, (unsigned long long)key.objectid, key.type, (unsigned long long)key.offset, (unsigned long long)btrfs_node_blockptr(c, i)); } for (i = 0; i < nr; i++) { struct extent_buffer *next = read_tree_block(root, btrfs_node_blockptr(c, i), btrfs_level_size(root, level - 1), btrfs_node_ptr_generation(c, i)); if (btrfs_is_leaf(next) && btrfs_header_level(c) != 1) BUG(); if (btrfs_header_level(next) != btrfs_header_level(c) - 1) BUG(); btrfs_print_tree(root, next); free_extent_buffer(next); } }