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(KERN_INFO "\t\tchunk length %llu owner %llu type %llu " 28 "num_stripes %d\n", 29 (unsigned long long)btrfs_chunk_length(eb, chunk), 30 (unsigned long long)btrfs_chunk_owner(eb, chunk), 31 (unsigned long long)btrfs_chunk_type(eb, chunk), 32 num_stripes); 33 for (i = 0 ; i < num_stripes ; i++) { 34 printk(KERN_INFO "\t\t\tstripe %d devid %llu offset %llu\n", i, 35 (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i), 36 (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i)); 37 } 38 } 39 static void print_dev_item(struct extent_buffer *eb, 40 struct btrfs_dev_item *dev_item) 41 { 42 printk(KERN_INFO "\t\tdev item devid %llu " 43 "total_bytes %llu bytes used %llu\n", 44 (unsigned long long)btrfs_device_id(eb, dev_item), 45 (unsigned long long)btrfs_device_total_bytes(eb, dev_item), 46 (unsigned long long)btrfs_device_bytes_used(eb, dev_item)); 47 } 48 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) 49 { 50 int i; 51 u32 nr = btrfs_header_nritems(l); 52 struct btrfs_item *item; 53 struct btrfs_extent_item *ei; 54 struct btrfs_root_item *ri; 55 struct btrfs_dir_item *di; 56 struct btrfs_inode_item *ii; 57 struct btrfs_block_group_item *bi; 58 struct btrfs_file_extent_item *fi; 59 struct btrfs_key key; 60 struct btrfs_key found_key; 61 struct btrfs_extent_ref *ref; 62 struct btrfs_dev_extent *dev_extent; 63 u32 type; 64 65 printk(KERN_INFO "leaf %llu total ptrs %d free space %d\n", 66 (unsigned long long)btrfs_header_bytenr(l), nr, 67 btrfs_leaf_free_space(root, l)); 68 for (i = 0 ; i < nr ; i++) { 69 item = btrfs_item_nr(l, i); 70 btrfs_item_key_to_cpu(l, &key, i); 71 type = btrfs_key_type(&key); 72 printk(KERN_INFO "\titem %d key (%llu %x %llu) itemoff %d " 73 "itemsize %d\n", 74 i, 75 (unsigned long long)key.objectid, type, 76 (unsigned long long)key.offset, 77 btrfs_item_offset(l, item), btrfs_item_size(l, item)); 78 switch (type) { 79 case BTRFS_INODE_ITEM_KEY: 80 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item); 81 printk(KERN_INFO "\t\tinode generation %llu size %llu " 82 "mode %o\n", 83 (unsigned long long) 84 btrfs_inode_generation(l, ii), 85 (unsigned long long)btrfs_inode_size(l, ii), 86 btrfs_inode_mode(l, ii)); 87 break; 88 case BTRFS_DIR_ITEM_KEY: 89 di = btrfs_item_ptr(l, i, struct btrfs_dir_item); 90 btrfs_dir_item_key_to_cpu(l, di, &found_key); 91 printk(KERN_INFO "\t\tdir oid %llu type %u\n", 92 (unsigned long long)found_key.objectid, 93 btrfs_dir_type(l, di)); 94 break; 95 case BTRFS_ROOT_ITEM_KEY: 96 ri = btrfs_item_ptr(l, i, struct btrfs_root_item); 97 printk(KERN_INFO "\t\troot data bytenr %llu refs %u\n", 98 (unsigned long long) 99 btrfs_disk_root_bytenr(l, ri), 100 btrfs_disk_root_refs(l, ri)); 101 break; 102 case BTRFS_EXTENT_ITEM_KEY: 103 ei = btrfs_item_ptr(l, i, struct btrfs_extent_item); 104 printk(KERN_INFO "\t\textent data refs %u\n", 105 btrfs_extent_refs(l, ei)); 106 break; 107 case BTRFS_EXTENT_REF_KEY: 108 ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref); 109 printk(KERN_INFO "\t\textent back ref root %llu " 110 "gen %llu owner %llu num_refs %lu\n", 111 (unsigned long long)btrfs_ref_root(l, ref), 112 (unsigned long long)btrfs_ref_generation(l, ref), 113 (unsigned long long)btrfs_ref_objectid(l, ref), 114 (unsigned long)btrfs_ref_num_refs(l, ref)); 115 break; 116 117 case BTRFS_EXTENT_DATA_KEY: 118 fi = btrfs_item_ptr(l, i, 119 struct btrfs_file_extent_item); 120 if (btrfs_file_extent_type(l, fi) == 121 BTRFS_FILE_EXTENT_INLINE) { 122 printk(KERN_INFO "\t\tinline extent data " 123 "size %u\n", 124 btrfs_file_extent_inline_len(l, fi)); 125 break; 126 } 127 printk(KERN_INFO "\t\textent data disk bytenr %llu " 128 "nr %llu\n", 129 (unsigned long long) 130 btrfs_file_extent_disk_bytenr(l, fi), 131 (unsigned long long) 132 btrfs_file_extent_disk_num_bytes(l, fi)); 133 printk(KERN_INFO "\t\textent data offset %llu " 134 "nr %llu ram %llu\n", 135 (unsigned long long) 136 btrfs_file_extent_offset(l, fi), 137 (unsigned long long) 138 btrfs_file_extent_num_bytes(l, fi), 139 (unsigned long long) 140 btrfs_file_extent_ram_bytes(l, fi)); 141 break; 142 case BTRFS_BLOCK_GROUP_ITEM_KEY: 143 bi = btrfs_item_ptr(l, i, 144 struct btrfs_block_group_item); 145 printk(KERN_INFO "\t\tblock group used %llu\n", 146 (unsigned long long) 147 btrfs_disk_block_group_used(l, bi)); 148 break; 149 case BTRFS_CHUNK_ITEM_KEY: 150 print_chunk(l, btrfs_item_ptr(l, i, 151 struct btrfs_chunk)); 152 break; 153 case BTRFS_DEV_ITEM_KEY: 154 print_dev_item(l, btrfs_item_ptr(l, i, 155 struct btrfs_dev_item)); 156 break; 157 case BTRFS_DEV_EXTENT_KEY: 158 dev_extent = btrfs_item_ptr(l, i, 159 struct btrfs_dev_extent); 160 printk(KERN_INFO "\t\tdev extent chunk_tree %llu\n" 161 "\t\tchunk objectid %llu chunk offset %llu " 162 "length %llu\n", 163 (unsigned long long) 164 btrfs_dev_extent_chunk_tree(l, dev_extent), 165 (unsigned long long) 166 btrfs_dev_extent_chunk_objectid(l, dev_extent), 167 (unsigned long long) 168 btrfs_dev_extent_chunk_offset(l, dev_extent), 169 (unsigned long long) 170 btrfs_dev_extent_length(l, dev_extent)); 171 }; 172 } 173 } 174 175 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c) 176 { 177 int i; u32 nr; 178 struct btrfs_key key; 179 int level; 180 181 if (!c) 182 return; 183 nr = btrfs_header_nritems(c); 184 level = btrfs_header_level(c); 185 if (level == 0) { 186 btrfs_print_leaf(root, c); 187 return; 188 } 189 printk(KERN_INFO "node %llu level %d total ptrs %d free spc %u\n", 190 (unsigned long long)btrfs_header_bytenr(c), 191 btrfs_header_level(c), nr, 192 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr); 193 for (i = 0; i < nr; i++) { 194 btrfs_node_key_to_cpu(c, &key, i); 195 printk(KERN_INFO "\tkey %d (%llu %u %llu) block %llu\n", 196 i, 197 (unsigned long long)key.objectid, 198 key.type, 199 (unsigned long long)key.offset, 200 (unsigned long long)btrfs_node_blockptr(c, i)); 201 } 202 for (i = 0; i < nr; i++) { 203 struct extent_buffer *next = read_tree_block(root, 204 btrfs_node_blockptr(c, i), 205 btrfs_level_size(root, level - 1), 206 btrfs_node_ptr_generation(c, i)); 207 if (btrfs_is_leaf(next) && 208 btrfs_header_level(c) != 1) 209 BUG(); 210 if (btrfs_header_level(next) != 211 btrfs_header_level(c) - 1) 212 BUG(); 213 btrfs_print_tree(root, next); 214 free_extent_buffer(next); 215 } 216 } 217