1 /* 2 * Copyright (C) 2007 Oracle. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public 6 * License v2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public 14 * License along with this program; if not, write to the 15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 16 * Boston, MA 021110-1307, USA. 17 */ 18 19 #include "ctree.h" 20 #include "disk-io.h" 21 #include "print-tree.h" 22 23 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk) 24 { 25 int num_stripes = btrfs_chunk_num_stripes(eb, chunk); 26 int i; 27 printk("\t\tchunk owner %llu type %llu num_stripes %d\n", 28 (unsigned long long)btrfs_chunk_owner(eb, chunk), 29 (unsigned long long)btrfs_chunk_type(eb, chunk), 30 num_stripes); 31 for (i = 0 ; i < num_stripes ; i++) { 32 printk("\t\t\tstripe %d devid %llu offset %llu\n", i, 33 (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i), 34 (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i)); 35 } 36 } 37 static void print_dev_item(struct extent_buffer *eb, 38 struct btrfs_dev_item *dev_item) 39 { 40 printk("\t\tdev item devid %llu " 41 "total_bytes %llu bytes used %Lu\n", 42 (unsigned long long)btrfs_device_id(eb, dev_item), 43 (unsigned long long)btrfs_device_total_bytes(eb, dev_item), 44 (unsigned long long)btrfs_device_bytes_used(eb, dev_item)); 45 } 46 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) 47 { 48 int i; 49 u32 nr = btrfs_header_nritems(l); 50 struct btrfs_item *item; 51 struct btrfs_extent_item *ei; 52 struct btrfs_root_item *ri; 53 struct btrfs_dir_item *di; 54 struct btrfs_inode_item *ii; 55 struct btrfs_block_group_item *bi; 56 struct btrfs_file_extent_item *fi; 57 struct btrfs_key key; 58 struct btrfs_key found_key; 59 struct btrfs_extent_ref *ref; 60 struct btrfs_dev_extent *dev_extent; 61 u32 type; 62 63 printk("leaf %llu total ptrs %d free space %d\n", 64 (unsigned long long)btrfs_header_bytenr(l), nr, 65 btrfs_leaf_free_space(root, l)); 66 for (i = 0 ; i < nr ; i++) { 67 item = btrfs_item_nr(l, i); 68 btrfs_item_key_to_cpu(l, &key, i); 69 type = btrfs_key_type(&key); 70 printk("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n", 71 i, 72 (unsigned long long)key.objectid, type, 73 (unsigned long long)key.offset, 74 btrfs_item_offset(l, item), btrfs_item_size(l, item)); 75 switch (type) { 76 case BTRFS_INODE_ITEM_KEY: 77 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item); 78 printk("\t\tinode generation %llu size %llu mode %o\n", 79 (unsigned long long)btrfs_inode_generation(l, ii), 80 (unsigned long long)btrfs_inode_size(l, ii), 81 btrfs_inode_mode(l, ii)); 82 break; 83 case BTRFS_DIR_ITEM_KEY: 84 di = btrfs_item_ptr(l, i, struct btrfs_dir_item); 85 btrfs_dir_item_key_to_cpu(l, di, &found_key); 86 printk("\t\tdir oid %llu type %u\n", 87 (unsigned long long)found_key.objectid, 88 btrfs_dir_type(l, di)); 89 break; 90 case BTRFS_ROOT_ITEM_KEY: 91 ri = btrfs_item_ptr(l, i, struct btrfs_root_item); 92 printk("\t\troot data bytenr %llu refs %u\n", 93 (unsigned long long)btrfs_disk_root_bytenr(l, ri), 94 btrfs_disk_root_refs(l, ri)); 95 break; 96 case BTRFS_EXTENT_ITEM_KEY: 97 ei = btrfs_item_ptr(l, i, struct btrfs_extent_item); 98 printk("\t\textent data refs %u\n", 99 btrfs_extent_refs(l, ei)); 100 break; 101 case BTRFS_EXTENT_REF_KEY: 102 ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref); 103 printk("\t\textent back ref root %llu gen %llu " 104 "owner %llu offset %llu\n", 105 (unsigned long long)btrfs_ref_root(l, ref), 106 (unsigned long long)btrfs_ref_generation(l, ref), 107 (unsigned long long)btrfs_ref_objectid(l, ref), 108 (unsigned long long)btrfs_ref_offset(l, ref)); 109 break; 110 111 case BTRFS_EXTENT_DATA_KEY: 112 fi = btrfs_item_ptr(l, i, 113 struct btrfs_file_extent_item); 114 if (btrfs_file_extent_type(l, fi) == 115 BTRFS_FILE_EXTENT_INLINE) { 116 printk("\t\tinline extent data size %u\n", 117 btrfs_file_extent_inline_len(l, item)); 118 break; 119 } 120 printk("\t\textent data disk bytenr %llu nr %llu\n", 121 (unsigned long long)btrfs_file_extent_disk_bytenr(l, fi), 122 (unsigned long long)btrfs_file_extent_disk_num_bytes(l, fi)); 123 printk("\t\textent data offset %llu nr %llu\n", 124 (unsigned long long)btrfs_file_extent_offset(l, fi), 125 (unsigned long long)btrfs_file_extent_num_bytes(l, fi)); 126 break; 127 case BTRFS_BLOCK_GROUP_ITEM_KEY: 128 bi = btrfs_item_ptr(l, i, 129 struct btrfs_block_group_item); 130 printk("\t\tblock group used %llu\n", 131 (unsigned long long)btrfs_disk_block_group_used(l, bi)); 132 break; 133 case BTRFS_CHUNK_ITEM_KEY: 134 print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk)); 135 break; 136 case BTRFS_DEV_ITEM_KEY: 137 print_dev_item(l, btrfs_item_ptr(l, i, 138 struct btrfs_dev_item)); 139 break; 140 case BTRFS_DEV_EXTENT_KEY: 141 dev_extent = btrfs_item_ptr(l, i, 142 struct btrfs_dev_extent); 143 printk("\t\tdev extent owner %llu length %llu\n", 144 (unsigned long long)btrfs_dev_extent_owner(l, dev_extent), 145 (unsigned long long)btrfs_dev_extent_length(l, dev_extent)); 146 }; 147 } 148 } 149 150 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c) 151 { 152 int i; 153 u32 nr; 154 struct btrfs_key key; 155 int level; 156 157 if (!c) 158 return; 159 nr = btrfs_header_nritems(c); 160 level = btrfs_header_level(c); 161 if (level == 0) { 162 btrfs_print_leaf(root, c); 163 return; 164 } 165 printk("node %llu level %d total ptrs %d free spc %u\n", 166 (unsigned long long)btrfs_header_bytenr(c), 167 btrfs_header_level(c), nr, 168 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr); 169 for (i = 0; i < nr; i++) { 170 btrfs_node_key_to_cpu(c, &key, i); 171 printk("\tkey %d (%llu %u %llu) block %llu\n", 172 i, 173 (unsigned long long)key.objectid, 174 key.type, 175 (unsigned long long)key.offset, 176 (unsigned long long)btrfs_node_blockptr(c, i)); 177 } 178 for (i = 0; i < nr; i++) { 179 struct extent_buffer *next = read_tree_block(root, 180 btrfs_node_blockptr(c, i), 181 btrfs_level_size(root, level - 1)); 182 if (btrfs_is_leaf(next) && 183 btrfs_header_level(c) != 1) 184 BUG(); 185 if (btrfs_header_level(next) != 186 btrfs_header_level(c) - 1) 187 BUG(); 188 btrfs_print_tree(root, next); 189 free_extent_buffer(next); 190 } 191 } 192 193