2 * Copyright (C) 2007 Oracle. All rights reserved.
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.
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.
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.
21 #include "print-tree.h"
23 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
25 int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
27 pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
28 btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
29 btrfs_chunk_type(eb, chunk), num_stripes);
30 for (i = 0 ; i < num_stripes ; i++) {
31 pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
32 btrfs_stripe_devid_nr(eb, chunk, i),
33 btrfs_stripe_offset_nr(eb, chunk, i));
36 static void print_dev_item(struct extent_buffer *eb,
37 struct btrfs_dev_item *dev_item)
39 pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
40 btrfs_device_id(eb, dev_item),
41 btrfs_device_total_bytes(eb, dev_item),
42 btrfs_device_bytes_used(eb, dev_item));
44 static void print_extent_data_ref(struct extent_buffer *eb,
45 struct btrfs_extent_data_ref *ref)
47 pr_info("\t\textent data backref root %llu objectid %llu offset %llu count %u\n",
48 btrfs_extent_data_ref_root(eb, ref),
49 btrfs_extent_data_ref_objectid(eb, ref),
50 btrfs_extent_data_ref_offset(eb, ref),
51 btrfs_extent_data_ref_count(eb, ref));
54 static void print_extent_item(struct extent_buffer *eb, int slot, int type)
56 struct btrfs_extent_item *ei;
57 struct btrfs_extent_inline_ref *iref;
58 struct btrfs_extent_data_ref *dref;
59 struct btrfs_shared_data_ref *sref;
60 struct btrfs_disk_key key;
63 u32 item_size = btrfs_item_size_nr(eb, slot);
67 if (item_size < sizeof(*ei)) {
68 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
69 struct btrfs_extent_item_v0 *ei0;
70 BUG_ON(item_size != sizeof(*ei0));
71 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
72 pr_info("\t\textent refs %u\n",
73 btrfs_extent_refs_v0(eb, ei0));
80 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
81 flags = btrfs_extent_flags(eb, ei);
83 pr_info("\t\textent refs %llu gen %llu flags %llu\n",
84 btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
87 if ((type == BTRFS_EXTENT_ITEM_KEY) &&
88 flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
89 struct btrfs_tree_block_info *info;
90 info = (struct btrfs_tree_block_info *)(ei + 1);
91 btrfs_tree_block_key(eb, info, &key);
92 pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
93 btrfs_disk_key_objectid(&key), key.type,
94 btrfs_disk_key_offset(&key),
95 btrfs_tree_block_level(eb, info));
96 iref = (struct btrfs_extent_inline_ref *)(info + 1);
98 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
101 ptr = (unsigned long)iref;
102 end = (unsigned long)ei + item_size;
104 iref = (struct btrfs_extent_inline_ref *)ptr;
105 type = btrfs_extent_inline_ref_type(eb, iref);
106 offset = btrfs_extent_inline_ref_offset(eb, iref);
108 case BTRFS_TREE_BLOCK_REF_KEY:
109 pr_info("\t\ttree block backref root %llu\n", offset);
111 case BTRFS_SHARED_BLOCK_REF_KEY:
112 pr_info("\t\tshared block backref parent %llu\n", offset);
114 case BTRFS_EXTENT_DATA_REF_KEY:
115 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
116 print_extent_data_ref(eb, dref);
118 case BTRFS_SHARED_DATA_REF_KEY:
119 sref = (struct btrfs_shared_data_ref *)(iref + 1);
120 pr_info("\t\tshared data backref parent %llu count %u\n",
121 offset, btrfs_shared_data_ref_count(eb, sref));
124 btrfs_err(eb->fs_info,
125 "extent %llu has invalid ref type %d",
129 ptr += btrfs_extent_inline_ref_size(type);
134 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
135 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
137 struct btrfs_extent_ref_v0 *ref0;
139 ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
140 printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
141 btrfs_ref_root_v0(eb, ref0),
142 btrfs_ref_generation_v0(eb, ref0),
143 btrfs_ref_objectid_v0(eb, ref0),
144 (unsigned long)btrfs_ref_count_v0(eb, ref0));
148 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
151 if (!IS_ALIGNED(item_size, sizeof(u64))) {
152 pr_warn("BTRFS: uuid item with illegal size %lu!\n",
153 (unsigned long)item_size);
159 read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
160 pr_info("\t\tsubvol_id %llu\n",
161 (unsigned long long)le64_to_cpu(subvol_id));
162 item_size -= sizeof(u64);
163 offset += sizeof(u64);
167 void btrfs_print_leaf(struct extent_buffer *l)
169 struct btrfs_fs_info *fs_info;
172 struct btrfs_item *item;
173 struct btrfs_root_item *ri;
174 struct btrfs_dir_item *di;
175 struct btrfs_inode_item *ii;
176 struct btrfs_block_group_item *bi;
177 struct btrfs_file_extent_item *fi;
178 struct btrfs_extent_data_ref *dref;
179 struct btrfs_shared_data_ref *sref;
180 struct btrfs_dev_extent *dev_extent;
181 struct btrfs_key key;
182 struct btrfs_key found_key;
187 fs_info = l->fs_info;
188 nr = btrfs_header_nritems(l);
190 btrfs_info(fs_info, "leaf %llu total ptrs %d free space %d",
191 btrfs_header_bytenr(l), nr,
192 btrfs_leaf_free_space(fs_info, l));
193 for (i = 0 ; i < nr ; i++) {
194 item = btrfs_item_nr(i);
195 btrfs_item_key_to_cpu(l, &key, i);
197 pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
198 i, key.objectid, type, key.offset,
199 btrfs_item_offset(l, item), btrfs_item_size(l, item));
201 case BTRFS_INODE_ITEM_KEY:
202 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
203 pr_info("\t\tinode generation %llu size %llu mode %o\n",
204 btrfs_inode_generation(l, ii),
205 btrfs_inode_size(l, ii),
206 btrfs_inode_mode(l, ii));
208 case BTRFS_DIR_ITEM_KEY:
209 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
210 btrfs_dir_item_key_to_cpu(l, di, &found_key);
211 pr_info("\t\tdir oid %llu type %u\n",
213 btrfs_dir_type(l, di));
215 case BTRFS_ROOT_ITEM_KEY:
216 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
217 pr_info("\t\troot data bytenr %llu refs %u\n",
218 btrfs_disk_root_bytenr(l, ri),
219 btrfs_disk_root_refs(l, ri));
221 case BTRFS_EXTENT_ITEM_KEY:
222 case BTRFS_METADATA_ITEM_KEY:
223 print_extent_item(l, i, type);
225 case BTRFS_TREE_BLOCK_REF_KEY:
226 pr_info("\t\ttree block backref\n");
228 case BTRFS_SHARED_BLOCK_REF_KEY:
229 pr_info("\t\tshared block backref\n");
231 case BTRFS_EXTENT_DATA_REF_KEY:
232 dref = btrfs_item_ptr(l, i,
233 struct btrfs_extent_data_ref);
234 print_extent_data_ref(l, dref);
236 case BTRFS_SHARED_DATA_REF_KEY:
237 sref = btrfs_item_ptr(l, i,
238 struct btrfs_shared_data_ref);
239 pr_info("\t\tshared data backref count %u\n",
240 btrfs_shared_data_ref_count(l, sref));
242 case BTRFS_EXTENT_DATA_KEY:
243 fi = btrfs_item_ptr(l, i,
244 struct btrfs_file_extent_item);
245 if (btrfs_file_extent_type(l, fi) ==
246 BTRFS_FILE_EXTENT_INLINE) {
247 pr_info("\t\tinline extent data size %u\n",
248 btrfs_file_extent_inline_len(l, i, fi));
251 pr_info("\t\textent data disk bytenr %llu nr %llu\n",
252 btrfs_file_extent_disk_bytenr(l, fi),
253 btrfs_file_extent_disk_num_bytes(l, fi));
254 pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
255 btrfs_file_extent_offset(l, fi),
256 btrfs_file_extent_num_bytes(l, fi),
257 btrfs_file_extent_ram_bytes(l, fi));
259 case BTRFS_EXTENT_REF_V0_KEY:
260 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
261 print_extent_ref_v0(l, i);
266 case BTRFS_BLOCK_GROUP_ITEM_KEY:
267 bi = btrfs_item_ptr(l, i,
268 struct btrfs_block_group_item);
270 "\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
271 btrfs_disk_block_group_used(l, bi),
272 btrfs_disk_block_group_chunk_objectid(l, bi),
273 btrfs_disk_block_group_flags(l, bi));
275 case BTRFS_CHUNK_ITEM_KEY:
276 print_chunk(l, btrfs_item_ptr(l, i,
277 struct btrfs_chunk));
279 case BTRFS_DEV_ITEM_KEY:
280 print_dev_item(l, btrfs_item_ptr(l, i,
281 struct btrfs_dev_item));
283 case BTRFS_DEV_EXTENT_KEY:
284 dev_extent = btrfs_item_ptr(l, i,
285 struct btrfs_dev_extent);
286 pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
287 btrfs_dev_extent_chunk_tree(l, dev_extent),
288 btrfs_dev_extent_chunk_objectid(l, dev_extent),
289 btrfs_dev_extent_chunk_offset(l, dev_extent),
290 btrfs_dev_extent_length(l, dev_extent));
292 case BTRFS_PERSISTENT_ITEM_KEY:
293 pr_info("\t\tpersistent item objectid %llu offset %llu\n",
294 key.objectid, key.offset);
295 switch (key.objectid) {
296 case BTRFS_DEV_STATS_OBJECTID:
297 pr_info("\t\tdevice stats\n");
300 pr_info("\t\tunknown persistent item\n");
303 case BTRFS_TEMPORARY_ITEM_KEY:
304 pr_info("\t\ttemporary item objectid %llu offset %llu\n",
305 key.objectid, key.offset);
306 switch (key.objectid) {
307 case BTRFS_BALANCE_OBJECTID:
308 pr_info("\t\tbalance status\n");
311 pr_info("\t\tunknown temporary item\n");
314 case BTRFS_DEV_REPLACE_KEY:
315 pr_info("\t\tdev replace\n");
317 case BTRFS_UUID_KEY_SUBVOL:
318 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
319 print_uuid_item(l, btrfs_item_ptr_offset(l, i),
320 btrfs_item_size_nr(l, i));
326 void btrfs_print_tree(struct extent_buffer *c)
328 struct btrfs_fs_info *fs_info;
330 struct btrfs_key key;
335 fs_info = c->fs_info;
336 nr = btrfs_header_nritems(c);
337 level = btrfs_header_level(c);
343 "node %llu level %d total ptrs %d free spc %u",
344 btrfs_header_bytenr(c), level, nr,
345 (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr);
346 for (i = 0; i < nr; i++) {
347 btrfs_node_key_to_cpu(c, &key, i);
348 pr_info("\tkey %d (%llu %u %llu) block %llu\n",
349 i, key.objectid, key.type, key.offset,
350 btrfs_node_blockptr(c, i));
352 for (i = 0; i < nr; i++) {
353 struct extent_buffer *next = read_tree_block(fs_info,
354 btrfs_node_blockptr(c, i),
355 btrfs_node_ptr_generation(c, i));
358 } else if (!extent_buffer_uptodate(next)) {
359 free_extent_buffer(next);
363 if (btrfs_is_leaf(next) &&
366 if (btrfs_header_level(next) !=
369 btrfs_print_tree(next);
370 free_extent_buffer(next);