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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
23static 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 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));
34 }
35}
36static void print_dev_item(struct extent_buffer *eb,
37 struct btrfs_dev_item *dev_item)
38{
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));
43}
44static void print_extent_data_ref(struct extent_buffer *eb,
45 struct btrfs_extent_data_ref *ref)
46{
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));
52}
53
54static void print_extent_item(struct extent_buffer *eb, int slot, int type)
55{
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;
61 unsigned long end;
62 unsigned long ptr;
63 u32 item_size = btrfs_item_size_nr(eb, slot);
64 u64 flags;
65 u64 offset;
66
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));
74 return;
75#else
76 BUG();
77#endif
78 }
79
80 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
81 flags = btrfs_extent_flags(eb, ei);
82
83 pr_info("\t\textent refs %llu gen %llu flags %llu\n",
84 btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
85 flags);
86
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);
97 } else {
98 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
99 }
100
101 ptr = (unsigned long)iref;
102 end = (unsigned long)ei + item_size;
103 while (ptr < end) {
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);
107 switch (type) {
108 case BTRFS_TREE_BLOCK_REF_KEY:
109 pr_info("\t\ttree block backref root %llu\n", offset);
110 break;
111 case BTRFS_SHARED_BLOCK_REF_KEY:
112 pr_info("\t\tshared block backref parent %llu\n", offset);
113 break;
114 case BTRFS_EXTENT_DATA_REF_KEY:
115 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
116 print_extent_data_ref(eb, dref);
117 break;
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));
122 break;
123 default:
124 BUG();
125 }
126 ptr += btrfs_extent_inline_ref_size(type);
127 }
128 WARN_ON(ptr > end);
129}
130
131#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
132static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
133{
134 struct btrfs_extent_ref_v0 *ref0;
135
136 ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
137 printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
138 btrfs_ref_root_v0(eb, ref0),
139 btrfs_ref_generation_v0(eb, ref0),
140 btrfs_ref_objectid_v0(eb, ref0),
141 (unsigned long)btrfs_ref_count_v0(eb, ref0));
142}
143#endif
144
145static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
146 u32 item_size)
147{
148 if (!IS_ALIGNED(item_size, sizeof(u64))) {
149 pr_warn("BTRFS: uuid item with illegal size %lu!\n",
150 (unsigned long)item_size);
151 return;
152 }
153 while (item_size) {
154 __le64 subvol_id;
155
156 read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
157 pr_info("\t\tsubvol_id %llu\n",
158 (unsigned long long)le64_to_cpu(subvol_id));
159 item_size -= sizeof(u64);
160 offset += sizeof(u64);
161 }
162}
163
164void btrfs_print_leaf(struct btrfs_fs_info *fs_info, struct extent_buffer *l)
165{
166 int i;
167 u32 type, nr;
168 struct btrfs_item *item;
169 struct btrfs_root_item *ri;
170 struct btrfs_dir_item *di;
171 struct btrfs_inode_item *ii;
172 struct btrfs_block_group_item *bi;
173 struct btrfs_file_extent_item *fi;
174 struct btrfs_extent_data_ref *dref;
175 struct btrfs_shared_data_ref *sref;
176 struct btrfs_dev_extent *dev_extent;
177 struct btrfs_key key;
178 struct btrfs_key found_key;
179
180 if (!l)
181 return;
182
183 nr = btrfs_header_nritems(l);
184
185 btrfs_info(fs_info, "leaf %llu total ptrs %d free space %d",
186 btrfs_header_bytenr(l), nr,
187 btrfs_leaf_free_space(fs_info, l));
188 for (i = 0 ; i < nr ; i++) {
189 item = btrfs_item_nr(i);
190 btrfs_item_key_to_cpu(l, &key, i);
191 type = key.type;
192 pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
193 i, key.objectid, type, key.offset,
194 btrfs_item_offset(l, item), btrfs_item_size(l, item));
195 switch (type) {
196 case BTRFS_INODE_ITEM_KEY:
197 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
198 pr_info("\t\tinode generation %llu size %llu mode %o\n",
199 btrfs_inode_generation(l, ii),
200 btrfs_inode_size(l, ii),
201 btrfs_inode_mode(l, ii));
202 break;
203 case BTRFS_DIR_ITEM_KEY:
204 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
205 btrfs_dir_item_key_to_cpu(l, di, &found_key);
206 pr_info("\t\tdir oid %llu type %u\n",
207 found_key.objectid,
208 btrfs_dir_type(l, di));
209 break;
210 case BTRFS_ROOT_ITEM_KEY:
211 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
212 pr_info("\t\troot data bytenr %llu refs %u\n",
213 btrfs_disk_root_bytenr(l, ri),
214 btrfs_disk_root_refs(l, ri));
215 break;
216 case BTRFS_EXTENT_ITEM_KEY:
217 case BTRFS_METADATA_ITEM_KEY:
218 print_extent_item(l, i, type);
219 break;
220 case BTRFS_TREE_BLOCK_REF_KEY:
221 pr_info("\t\ttree block backref\n");
222 break;
223 case BTRFS_SHARED_BLOCK_REF_KEY:
224 pr_info("\t\tshared block backref\n");
225 break;
226 case BTRFS_EXTENT_DATA_REF_KEY:
227 dref = btrfs_item_ptr(l, i,
228 struct btrfs_extent_data_ref);
229 print_extent_data_ref(l, dref);
230 break;
231 case BTRFS_SHARED_DATA_REF_KEY:
232 sref = btrfs_item_ptr(l, i,
233 struct btrfs_shared_data_ref);
234 pr_info("\t\tshared data backref count %u\n",
235 btrfs_shared_data_ref_count(l, sref));
236 break;
237 case BTRFS_EXTENT_DATA_KEY:
238 fi = btrfs_item_ptr(l, i,
239 struct btrfs_file_extent_item);
240 if (btrfs_file_extent_type(l, fi) ==
241 BTRFS_FILE_EXTENT_INLINE) {
242 pr_info("\t\tinline extent data size %u\n",
243 btrfs_file_extent_inline_len(l, i, fi));
244 break;
245 }
246 pr_info("\t\textent data disk bytenr %llu nr %llu\n",
247 btrfs_file_extent_disk_bytenr(l, fi),
248 btrfs_file_extent_disk_num_bytes(l, fi));
249 pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
250 btrfs_file_extent_offset(l, fi),
251 btrfs_file_extent_num_bytes(l, fi),
252 btrfs_file_extent_ram_bytes(l, fi));
253 break;
254 case BTRFS_EXTENT_REF_V0_KEY:
255#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
256 print_extent_ref_v0(l, i);
257#else
258 BUG();
259#endif
260 break;
261 case BTRFS_BLOCK_GROUP_ITEM_KEY:
262 bi = btrfs_item_ptr(l, i,
263 struct btrfs_block_group_item);
264 pr_info("\t\tblock group used %llu\n",
265 btrfs_disk_block_group_used(l, bi));
266 break;
267 case BTRFS_CHUNK_ITEM_KEY:
268 print_chunk(l, btrfs_item_ptr(l, i,
269 struct btrfs_chunk));
270 break;
271 case BTRFS_DEV_ITEM_KEY:
272 print_dev_item(l, btrfs_item_ptr(l, i,
273 struct btrfs_dev_item));
274 break;
275 case BTRFS_DEV_EXTENT_KEY:
276 dev_extent = btrfs_item_ptr(l, i,
277 struct btrfs_dev_extent);
278 pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
279 btrfs_dev_extent_chunk_tree(l, dev_extent),
280 btrfs_dev_extent_chunk_objectid(l, dev_extent),
281 btrfs_dev_extent_chunk_offset(l, dev_extent),
282 btrfs_dev_extent_length(l, dev_extent));
283 break;
284 case BTRFS_PERSISTENT_ITEM_KEY:
285 pr_info("\t\tpersistent item objectid %llu offset %llu\n",
286 key.objectid, key.offset);
287 switch (key.objectid) {
288 case BTRFS_DEV_STATS_OBJECTID:
289 pr_info("\t\tdevice stats\n");
290 break;
291 default:
292 pr_info("\t\tunknown persistent item\n");
293 }
294 break;
295 case BTRFS_TEMPORARY_ITEM_KEY:
296 pr_info("\t\ttemporary item objectid %llu offset %llu\n",
297 key.objectid, key.offset);
298 switch (key.objectid) {
299 case BTRFS_BALANCE_OBJECTID:
300 pr_info("\t\tbalance status\n");
301 break;
302 default:
303 pr_info("\t\tunknown temporary item\n");
304 }
305 break;
306 case BTRFS_DEV_REPLACE_KEY:
307 pr_info("\t\tdev replace\n");
308 break;
309 case BTRFS_UUID_KEY_SUBVOL:
310 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
311 print_uuid_item(l, btrfs_item_ptr_offset(l, i),
312 btrfs_item_size_nr(l, i));
313 break;
314 };
315 }
316}
317
318void btrfs_print_tree(struct btrfs_fs_info *fs_info, struct extent_buffer *c)
319{
320 int i; u32 nr;
321 struct btrfs_key key;
322 int level;
323
324 if (!c)
325 return;
326 nr = btrfs_header_nritems(c);
327 level = btrfs_header_level(c);
328 if (level == 0) {
329 btrfs_print_leaf(fs_info, c);
330 return;
331 }
332 btrfs_info(fs_info,
333 "node %llu level %d total ptrs %d free spc %u",
334 btrfs_header_bytenr(c), level, nr,
335 (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr);
336 for (i = 0; i < nr; i++) {
337 btrfs_node_key_to_cpu(c, &key, i);
338 pr_info("\tkey %d (%llu %u %llu) block %llu\n",
339 i, key.objectid, key.type, key.offset,
340 btrfs_node_blockptr(c, i));
341 }
342 for (i = 0; i < nr; i++) {
343 struct extent_buffer *next = read_tree_block(fs_info,
344 btrfs_node_blockptr(c, i),
345 btrfs_node_ptr_generation(c, i));
346 if (IS_ERR(next)) {
347 continue;
348 } else if (!extent_buffer_uptodate(next)) {
349 free_extent_buffer(next);
350 continue;
351 }
352
353 if (btrfs_is_leaf(next) &&
354 level != 1)
355 BUG();
356 if (btrfs_header_level(next) !=
357 level - 1)
358 BUG();
359 btrfs_print_tree(fs_info, next);
360 free_extent_buffer(next);
361 }
362}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2007 Oracle. All rights reserved.
4 */
5
6#include "ctree.h"
7#include "disk-io.h"
8#include "print-tree.h"
9
10static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
11{
12 int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
13 int i;
14 pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
15 btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
16 btrfs_chunk_type(eb, chunk), num_stripes);
17 for (i = 0 ; i < num_stripes ; i++) {
18 pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
19 btrfs_stripe_devid_nr(eb, chunk, i),
20 btrfs_stripe_offset_nr(eb, chunk, i));
21 }
22}
23static void print_dev_item(struct extent_buffer *eb,
24 struct btrfs_dev_item *dev_item)
25{
26 pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
27 btrfs_device_id(eb, dev_item),
28 btrfs_device_total_bytes(eb, dev_item),
29 btrfs_device_bytes_used(eb, dev_item));
30}
31static void print_extent_data_ref(struct extent_buffer *eb,
32 struct btrfs_extent_data_ref *ref)
33{
34 pr_cont("extent data backref root %llu objectid %llu offset %llu count %u\n",
35 btrfs_extent_data_ref_root(eb, ref),
36 btrfs_extent_data_ref_objectid(eb, ref),
37 btrfs_extent_data_ref_offset(eb, ref),
38 btrfs_extent_data_ref_count(eb, ref));
39}
40
41static void print_extent_item(struct extent_buffer *eb, int slot, int type)
42{
43 struct btrfs_extent_item *ei;
44 struct btrfs_extent_inline_ref *iref;
45 struct btrfs_extent_data_ref *dref;
46 struct btrfs_shared_data_ref *sref;
47 struct btrfs_disk_key key;
48 unsigned long end;
49 unsigned long ptr;
50 u32 item_size = btrfs_item_size_nr(eb, slot);
51 u64 flags;
52 u64 offset;
53 int ref_index = 0;
54
55 if (item_size < sizeof(*ei)) {
56#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
57 struct btrfs_extent_item_v0 *ei0;
58 BUG_ON(item_size != sizeof(*ei0));
59 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
60 pr_info("\t\textent refs %u\n",
61 btrfs_extent_refs_v0(eb, ei0));
62 return;
63#else
64 BUG();
65#endif
66 }
67
68 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
69 flags = btrfs_extent_flags(eb, ei);
70
71 pr_info("\t\textent refs %llu gen %llu flags %llu\n",
72 btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
73 flags);
74
75 if ((type == BTRFS_EXTENT_ITEM_KEY) &&
76 flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
77 struct btrfs_tree_block_info *info;
78 info = (struct btrfs_tree_block_info *)(ei + 1);
79 btrfs_tree_block_key(eb, info, &key);
80 pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
81 btrfs_disk_key_objectid(&key), key.type,
82 btrfs_disk_key_offset(&key),
83 btrfs_tree_block_level(eb, info));
84 iref = (struct btrfs_extent_inline_ref *)(info + 1);
85 } else {
86 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
87 }
88
89 ptr = (unsigned long)iref;
90 end = (unsigned long)ei + item_size;
91 while (ptr < end) {
92 iref = (struct btrfs_extent_inline_ref *)ptr;
93 type = btrfs_extent_inline_ref_type(eb, iref);
94 offset = btrfs_extent_inline_ref_offset(eb, iref);
95 pr_info("\t\tref#%d: ", ref_index++);
96 switch (type) {
97 case BTRFS_TREE_BLOCK_REF_KEY:
98 pr_cont("tree block backref root %llu\n", offset);
99 break;
100 case BTRFS_SHARED_BLOCK_REF_KEY:
101 pr_cont("shared block backref parent %llu\n", offset);
102 /*
103 * offset is supposed to be a tree block which
104 * must be aligned to nodesize.
105 */
106 if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
107 pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
108 offset, (unsigned long long)eb->fs_info->nodesize);
109 break;
110 case BTRFS_EXTENT_DATA_REF_KEY:
111 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
112 print_extent_data_ref(eb, dref);
113 break;
114 case BTRFS_SHARED_DATA_REF_KEY:
115 sref = (struct btrfs_shared_data_ref *)(iref + 1);
116 pr_cont("shared data backref parent %llu count %u\n",
117 offset, btrfs_shared_data_ref_count(eb, sref));
118 /*
119 * offset is supposed to be a tree block which
120 * must be aligned to nodesize.
121 */
122 if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
123 pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
124 offset, (unsigned long long)eb->fs_info->nodesize);
125 break;
126 default:
127 pr_cont("(extent %llu has INVALID ref type %d)\n",
128 eb->start, type);
129 return;
130 }
131 ptr += btrfs_extent_inline_ref_size(type);
132 }
133 WARN_ON(ptr > end);
134}
135
136#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
137static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
138{
139 struct btrfs_extent_ref_v0 *ref0;
140
141 ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
142 printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
143 btrfs_ref_root_v0(eb, ref0),
144 btrfs_ref_generation_v0(eb, ref0),
145 btrfs_ref_objectid_v0(eb, ref0),
146 (unsigned long)btrfs_ref_count_v0(eb, ref0));
147}
148#endif
149
150static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
151 u32 item_size)
152{
153 if (!IS_ALIGNED(item_size, sizeof(u64))) {
154 pr_warn("BTRFS: uuid item with illegal size %lu!\n",
155 (unsigned long)item_size);
156 return;
157 }
158 while (item_size) {
159 __le64 subvol_id;
160
161 read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
162 pr_info("\t\tsubvol_id %llu\n",
163 (unsigned long long)le64_to_cpu(subvol_id));
164 item_size -= sizeof(u64);
165 offset += sizeof(u64);
166 }
167}
168
169void btrfs_print_leaf(struct extent_buffer *l)
170{
171 struct btrfs_fs_info *fs_info;
172 int i;
173 u32 type, nr;
174 struct btrfs_item *item;
175 struct btrfs_root_item *ri;
176 struct btrfs_dir_item *di;
177 struct btrfs_inode_item *ii;
178 struct btrfs_block_group_item *bi;
179 struct btrfs_file_extent_item *fi;
180 struct btrfs_extent_data_ref *dref;
181 struct btrfs_shared_data_ref *sref;
182 struct btrfs_dev_extent *dev_extent;
183 struct btrfs_key key;
184 struct btrfs_key found_key;
185
186 if (!l)
187 return;
188
189 fs_info = l->fs_info;
190 nr = btrfs_header_nritems(l);
191
192 btrfs_info(fs_info,
193 "leaf %llu gen %llu total ptrs %d free space %d owner %llu",
194 btrfs_header_bytenr(l), btrfs_header_generation(l), nr,
195 btrfs_leaf_free_space(fs_info, l), btrfs_header_owner(l));
196 for (i = 0 ; i < nr ; i++) {
197 item = btrfs_item_nr(i);
198 btrfs_item_key_to_cpu(l, &key, i);
199 type = key.type;
200 pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
201 i, key.objectid, type, key.offset,
202 btrfs_item_offset(l, item), btrfs_item_size(l, item));
203 switch (type) {
204 case BTRFS_INODE_ITEM_KEY:
205 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
206 pr_info("\t\tinode generation %llu size %llu mode %o\n",
207 btrfs_inode_generation(l, ii),
208 btrfs_inode_size(l, ii),
209 btrfs_inode_mode(l, ii));
210 break;
211 case BTRFS_DIR_ITEM_KEY:
212 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
213 btrfs_dir_item_key_to_cpu(l, di, &found_key);
214 pr_info("\t\tdir oid %llu type %u\n",
215 found_key.objectid,
216 btrfs_dir_type(l, di));
217 break;
218 case BTRFS_ROOT_ITEM_KEY:
219 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
220 pr_info("\t\troot data bytenr %llu refs %u\n",
221 btrfs_disk_root_bytenr(l, ri),
222 btrfs_disk_root_refs(l, ri));
223 break;
224 case BTRFS_EXTENT_ITEM_KEY:
225 case BTRFS_METADATA_ITEM_KEY:
226 print_extent_item(l, i, type);
227 break;
228 case BTRFS_TREE_BLOCK_REF_KEY:
229 pr_info("\t\ttree block backref\n");
230 break;
231 case BTRFS_SHARED_BLOCK_REF_KEY:
232 pr_info("\t\tshared block backref\n");
233 break;
234 case BTRFS_EXTENT_DATA_REF_KEY:
235 dref = btrfs_item_ptr(l, i,
236 struct btrfs_extent_data_ref);
237 print_extent_data_ref(l, dref);
238 break;
239 case BTRFS_SHARED_DATA_REF_KEY:
240 sref = btrfs_item_ptr(l, i,
241 struct btrfs_shared_data_ref);
242 pr_info("\t\tshared data backref count %u\n",
243 btrfs_shared_data_ref_count(l, sref));
244 break;
245 case BTRFS_EXTENT_DATA_KEY:
246 fi = btrfs_item_ptr(l, i,
247 struct btrfs_file_extent_item);
248 if (btrfs_file_extent_type(l, fi) ==
249 BTRFS_FILE_EXTENT_INLINE) {
250 pr_info("\t\tinline extent data size %u\n",
251 btrfs_file_extent_inline_len(l, i, fi));
252 break;
253 }
254 pr_info("\t\textent data disk bytenr %llu nr %llu\n",
255 btrfs_file_extent_disk_bytenr(l, fi),
256 btrfs_file_extent_disk_num_bytes(l, fi));
257 pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
258 btrfs_file_extent_offset(l, fi),
259 btrfs_file_extent_num_bytes(l, fi),
260 btrfs_file_extent_ram_bytes(l, fi));
261 break;
262 case BTRFS_EXTENT_REF_V0_KEY:
263#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
264 print_extent_ref_v0(l, i);
265#else
266 BUG();
267#endif
268 break;
269 case BTRFS_BLOCK_GROUP_ITEM_KEY:
270 bi = btrfs_item_ptr(l, i,
271 struct btrfs_block_group_item);
272 pr_info(
273 "\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
274 btrfs_disk_block_group_used(l, bi),
275 btrfs_disk_block_group_chunk_objectid(l, bi),
276 btrfs_disk_block_group_flags(l, bi));
277 break;
278 case BTRFS_CHUNK_ITEM_KEY:
279 print_chunk(l, btrfs_item_ptr(l, i,
280 struct btrfs_chunk));
281 break;
282 case BTRFS_DEV_ITEM_KEY:
283 print_dev_item(l, btrfs_item_ptr(l, i,
284 struct btrfs_dev_item));
285 break;
286 case BTRFS_DEV_EXTENT_KEY:
287 dev_extent = btrfs_item_ptr(l, i,
288 struct btrfs_dev_extent);
289 pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
290 btrfs_dev_extent_chunk_tree(l, dev_extent),
291 btrfs_dev_extent_chunk_objectid(l, dev_extent),
292 btrfs_dev_extent_chunk_offset(l, dev_extent),
293 btrfs_dev_extent_length(l, dev_extent));
294 break;
295 case BTRFS_PERSISTENT_ITEM_KEY:
296 pr_info("\t\tpersistent item objectid %llu offset %llu\n",
297 key.objectid, key.offset);
298 switch (key.objectid) {
299 case BTRFS_DEV_STATS_OBJECTID:
300 pr_info("\t\tdevice stats\n");
301 break;
302 default:
303 pr_info("\t\tunknown persistent item\n");
304 }
305 break;
306 case BTRFS_TEMPORARY_ITEM_KEY:
307 pr_info("\t\ttemporary item objectid %llu offset %llu\n",
308 key.objectid, key.offset);
309 switch (key.objectid) {
310 case BTRFS_BALANCE_OBJECTID:
311 pr_info("\t\tbalance status\n");
312 break;
313 default:
314 pr_info("\t\tunknown temporary item\n");
315 }
316 break;
317 case BTRFS_DEV_REPLACE_KEY:
318 pr_info("\t\tdev replace\n");
319 break;
320 case BTRFS_UUID_KEY_SUBVOL:
321 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
322 print_uuid_item(l, btrfs_item_ptr_offset(l, i),
323 btrfs_item_size_nr(l, i));
324 break;
325 };
326 }
327}
328
329void btrfs_print_tree(struct extent_buffer *c, bool follow)
330{
331 struct btrfs_fs_info *fs_info;
332 int i; u32 nr;
333 struct btrfs_key key;
334 int level;
335
336 if (!c)
337 return;
338 fs_info = c->fs_info;
339 nr = btrfs_header_nritems(c);
340 level = btrfs_header_level(c);
341 if (level == 0) {
342 btrfs_print_leaf(c);
343 return;
344 }
345 btrfs_info(fs_info,
346 "node %llu level %d gen %llu total ptrs %d free spc %u owner %llu",
347 btrfs_header_bytenr(c), level, btrfs_header_generation(c),
348 nr, (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr,
349 btrfs_header_owner(c));
350 for (i = 0; i < nr; i++) {
351 btrfs_node_key_to_cpu(c, &key, i);
352 pr_info("\tkey %d (%llu %u %llu) block %llu gen %llu\n",
353 i, key.objectid, key.type, key.offset,
354 btrfs_node_blockptr(c, i),
355 btrfs_node_ptr_generation(c, i));
356 }
357 if (!follow)
358 return;
359 for (i = 0; i < nr; i++) {
360 struct btrfs_key first_key;
361 struct extent_buffer *next;
362
363 btrfs_node_key_to_cpu(c, &first_key, i);
364 next = read_tree_block(fs_info, btrfs_node_blockptr(c, i),
365 btrfs_node_ptr_generation(c, i),
366 level - 1, &first_key);
367 if (IS_ERR(next)) {
368 continue;
369 } else if (!extent_buffer_uptodate(next)) {
370 free_extent_buffer(next);
371 continue;
372 }
373
374 if (btrfs_is_leaf(next) &&
375 level != 1)
376 BUG();
377 if (btrfs_header_level(next) !=
378 level - 1)
379 BUG();
380 btrfs_print_tree(next, follow);
381 free_extent_buffer(next);
382 }
383}