1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2007 Oracle. All rights reserved.
4 */
5
6 #include "messages.h"
7 #include "ctree.h"
8 #include "disk-io.h"
9 #include "file-item.h"
10 #include "print-tree.h"
11 #include "accessors.h"
12 #include "tree-checker.h"
13 #include "volumes.h"
14 #include "raid-stripe-tree.h"
15
16 /*
17 * Large enough buffer size for the stringification of any key type yet short
18 * enough to use the stack and avoid allocations.
19 */
20 #define KEY_TYPE_BUF_SIZE 32
21
22 struct root_name_map {
23 u64 id;
24 const char *name;
25 };
26
27 static const struct root_name_map root_map[] = {
28 { BTRFS_ROOT_TREE_OBJECTID, "ROOT_TREE" },
29 { BTRFS_EXTENT_TREE_OBJECTID, "EXTENT_TREE" },
30 { BTRFS_CHUNK_TREE_OBJECTID, "CHUNK_TREE" },
31 { BTRFS_DEV_TREE_OBJECTID, "DEV_TREE" },
32 { BTRFS_FS_TREE_OBJECTID, "FS_TREE" },
33 { BTRFS_CSUM_TREE_OBJECTID, "CSUM_TREE" },
34 { BTRFS_TREE_LOG_OBJECTID, "TREE_LOG" },
35 { BTRFS_QUOTA_TREE_OBJECTID, "QUOTA_TREE" },
36 { BTRFS_UUID_TREE_OBJECTID, "UUID_TREE" },
37 { BTRFS_FREE_SPACE_TREE_OBJECTID, "FREE_SPACE_TREE" },
38 { BTRFS_BLOCK_GROUP_TREE_OBJECTID, "BLOCK_GROUP_TREE" },
39 { BTRFS_DATA_RELOC_TREE_OBJECTID, "DATA_RELOC_TREE" },
40 { BTRFS_RAID_STRIPE_TREE_OBJECTID, "RAID_STRIPE_TREE" },
41 };
42
btrfs_root_name(const struct btrfs_key * key,char * buf)43 const char *btrfs_root_name(const struct btrfs_key *key, char *buf)
44 {
45 int i;
46
47 if (key->objectid == BTRFS_TREE_RELOC_OBJECTID) {
48 snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN,
49 "TREE_RELOC offset=%llu", key->offset);
50 return buf;
51 }
52
53 for (i = 0; i < ARRAY_SIZE(root_map); i++) {
54 if (root_map[i].id == key->objectid)
55 return root_map[i].name;
56 }
57
58 snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN, "%llu", key->objectid);
59 return buf;
60 }
61
print_chunk(const struct extent_buffer * eb,struct btrfs_chunk * chunk)62 static void print_chunk(const struct extent_buffer *eb, struct btrfs_chunk *chunk)
63 {
64 int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
65 int i;
66 pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
67 btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
68 btrfs_chunk_type(eb, chunk), num_stripes);
69 for (i = 0 ; i < num_stripes ; i++) {
70 pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
71 btrfs_stripe_devid_nr(eb, chunk, i),
72 btrfs_stripe_offset_nr(eb, chunk, i));
73 }
74 }
print_dev_item(const struct extent_buffer * eb,struct btrfs_dev_item * dev_item)75 static void print_dev_item(const struct extent_buffer *eb,
76 struct btrfs_dev_item *dev_item)
77 {
78 pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
79 btrfs_device_id(eb, dev_item),
80 btrfs_device_total_bytes(eb, dev_item),
81 btrfs_device_bytes_used(eb, dev_item));
82 }
print_extent_data_ref(const struct extent_buffer * eb,struct btrfs_extent_data_ref * ref)83 static void print_extent_data_ref(const struct extent_buffer *eb,
84 struct btrfs_extent_data_ref *ref)
85 {
86 pr_cont("extent data backref root %llu objectid %llu offset %llu count %u\n",
87 btrfs_extent_data_ref_root(eb, ref),
88 btrfs_extent_data_ref_objectid(eb, ref),
89 btrfs_extent_data_ref_offset(eb, ref),
90 btrfs_extent_data_ref_count(eb, ref));
91 }
92
print_extent_owner_ref(const struct extent_buffer * eb,const struct btrfs_extent_owner_ref * ref)93 static void print_extent_owner_ref(const struct extent_buffer *eb,
94 const struct btrfs_extent_owner_ref *ref)
95 {
96 ASSERT(btrfs_fs_incompat(eb->fs_info, SIMPLE_QUOTA));
97 pr_cont("extent data owner root %llu\n", btrfs_extent_owner_ref_root_id(eb, ref));
98 }
99
print_extent_item(const struct extent_buffer * eb,int slot,int type)100 static void print_extent_item(const struct extent_buffer *eb, int slot, int type)
101 {
102 struct btrfs_extent_item *ei;
103 struct btrfs_extent_inline_ref *iref;
104 struct btrfs_extent_data_ref *dref;
105 struct btrfs_shared_data_ref *sref;
106 struct btrfs_extent_owner_ref *oref;
107 struct btrfs_disk_key key;
108 unsigned long end;
109 unsigned long ptr;
110 u32 item_size = btrfs_item_size(eb, slot);
111 u64 flags;
112 u64 offset;
113 int ref_index = 0;
114
115 if (unlikely(item_size < sizeof(*ei))) {
116 btrfs_err(eb->fs_info,
117 "unexpected extent item size, has %u expect >= %zu",
118 item_size, sizeof(*ei));
119 return;
120 }
121
122 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
123 flags = btrfs_extent_flags(eb, ei);
124
125 pr_info("\t\textent refs %llu gen %llu flags %llu\n",
126 btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
127 flags);
128
129 if ((type == BTRFS_EXTENT_ITEM_KEY) &&
130 flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
131 struct btrfs_tree_block_info *info;
132 info = (struct btrfs_tree_block_info *)(ei + 1);
133 btrfs_tree_block_key(eb, info, &key);
134 pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
135 btrfs_disk_key_objectid(&key), key.type,
136 btrfs_disk_key_offset(&key),
137 btrfs_tree_block_level(eb, info));
138 iref = (struct btrfs_extent_inline_ref *)(info + 1);
139 } else {
140 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
141 }
142
143 ptr = (unsigned long)iref;
144 end = (unsigned long)ei + item_size;
145 while (ptr < end) {
146 iref = (struct btrfs_extent_inline_ref *)ptr;
147 type = btrfs_extent_inline_ref_type(eb, iref);
148 offset = btrfs_extent_inline_ref_offset(eb, iref);
149 pr_info("\t\tref#%d: ", ref_index++);
150 switch (type) {
151 case BTRFS_TREE_BLOCK_REF_KEY:
152 pr_cont("tree block backref root %llu\n", offset);
153 break;
154 case BTRFS_SHARED_BLOCK_REF_KEY:
155 pr_cont("shared block backref parent %llu\n", offset);
156 /*
157 * offset is supposed to be a tree block which
158 * must be aligned to nodesize.
159 */
160 if (!IS_ALIGNED(offset, eb->fs_info->sectorsize))
161 pr_info(
162 "\t\t\t(parent %llu not aligned to sectorsize %u)\n",
163 offset, eb->fs_info->sectorsize);
164 break;
165 case BTRFS_EXTENT_DATA_REF_KEY:
166 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
167 print_extent_data_ref(eb, dref);
168 break;
169 case BTRFS_SHARED_DATA_REF_KEY:
170 sref = (struct btrfs_shared_data_ref *)(iref + 1);
171 pr_cont("shared data backref parent %llu count %u\n",
172 offset, btrfs_shared_data_ref_count(eb, sref));
173 /*
174 * Offset is supposed to be a tree block which must be
175 * aligned to sectorsize.
176 */
177 if (!IS_ALIGNED(offset, eb->fs_info->sectorsize))
178 pr_info(
179 "\t\t\t(parent %llu not aligned to sectorsize %u)\n",
180 offset, eb->fs_info->sectorsize);
181 break;
182 case BTRFS_EXTENT_OWNER_REF_KEY:
183 oref = (struct btrfs_extent_owner_ref *)(&iref->offset);
184 print_extent_owner_ref(eb, oref);
185 break;
186 default:
187 pr_cont("(extent %llu has INVALID ref type %d)\n",
188 eb->start, type);
189 return;
190 }
191 ptr += btrfs_extent_inline_ref_size(type);
192 }
193 WARN_ON(ptr > end);
194 }
195
print_uuid_item(const struct extent_buffer * l,unsigned long offset,u32 item_size)196 static void print_uuid_item(const struct extent_buffer *l, unsigned long offset,
197 u32 item_size)
198 {
199 if (!IS_ALIGNED(item_size, sizeof(u64))) {
200 btrfs_warn(l->fs_info, "uuid item with illegal size %lu",
201 (unsigned long)item_size);
202 return;
203 }
204 while (item_size) {
205 __le64 subvol_id;
206
207 read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
208 pr_info("\t\tsubvol_id %llu\n", le64_to_cpu(subvol_id));
209 item_size -= sizeof(u64);
210 offset += sizeof(u64);
211 }
212 }
213
print_raid_stripe_key(const struct extent_buffer * eb,u32 item_size,struct btrfs_stripe_extent * stripe)214 static void print_raid_stripe_key(const struct extent_buffer *eb, u32 item_size,
215 struct btrfs_stripe_extent *stripe)
216 {
217 const int num_stripes = btrfs_num_raid_stripes(item_size);
218
219 for (int i = 0; i < num_stripes; i++)
220 pr_info("\t\t\tstride %d devid %llu physical %llu\n",
221 i, btrfs_raid_stride_devid(eb, &stripe->strides[i]),
222 btrfs_raid_stride_physical(eb, &stripe->strides[i]));
223 }
224
225 /*
226 * Helper to output refs and locking status of extent buffer. Useful to debug
227 * race condition related problems.
228 */
print_eb_refs_lock(const struct extent_buffer * eb)229 static void print_eb_refs_lock(const struct extent_buffer *eb)
230 {
231 #ifdef CONFIG_BTRFS_DEBUG
232 btrfs_info(eb->fs_info, "refs %u lock_owner %u current %u",
233 refcount_read(&eb->refs), eb->lock_owner, current->pid);
234 #endif
235 }
236
print_timespec(const struct extent_buffer * eb,struct btrfs_timespec * timespec,const char * prefix,const char * suffix)237 static void print_timespec(const struct extent_buffer *eb,
238 struct btrfs_timespec *timespec,
239 const char *prefix, const char *suffix)
240 {
241 const u64 secs = btrfs_timespec_sec(eb, timespec);
242 const u32 nsecs = btrfs_timespec_nsec(eb, timespec);
243
244 pr_info("%s%llu.%u%s", prefix, secs, nsecs, suffix);
245 }
246
print_inode_item(const struct extent_buffer * eb,int i)247 static void print_inode_item(const struct extent_buffer *eb, int i)
248 {
249 struct btrfs_inode_item *ii = btrfs_item_ptr(eb, i, struct btrfs_inode_item);
250
251 pr_info("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n",
252 btrfs_inode_generation(eb, ii), btrfs_inode_transid(eb, ii),
253 btrfs_inode_size(eb, ii), btrfs_inode_nbytes(eb, ii));
254 pr_info("\t\tblock group %llu mode %o links %u uid %u gid %u\n",
255 btrfs_inode_block_group(eb, ii), btrfs_inode_mode(eb, ii),
256 btrfs_inode_nlink(eb, ii), btrfs_inode_uid(eb, ii),
257 btrfs_inode_gid(eb, ii));
258 pr_info("\t\trdev %llu sequence %llu flags 0x%llx\n",
259 btrfs_inode_rdev(eb, ii), btrfs_inode_sequence(eb, ii),
260 btrfs_inode_flags(eb, ii));
261 print_timespec(eb, &ii->atime, "\t\tatime ", "\n");
262 print_timespec(eb, &ii->ctime, "\t\tctime ", "\n");
263 print_timespec(eb, &ii->mtime, "\t\tmtime ", "\n");
264 print_timespec(eb, &ii->otime, "\t\totime ", "\n");
265 }
266
print_dir_item(const struct extent_buffer * eb,int i)267 static void print_dir_item(const struct extent_buffer *eb, int i)
268 {
269 const u32 size = btrfs_item_size(eb, i);
270 struct btrfs_dir_item *di = btrfs_item_ptr(eb, i, struct btrfs_dir_item);
271 u32 cur = 0;
272
273 while (cur < size) {
274 const u32 name_len = btrfs_dir_name_len(eb, di);
275 const u32 data_len = btrfs_dir_data_len(eb, di);
276 const u32 len = sizeof(*di) + name_len + data_len;
277 struct btrfs_key location;
278
279 btrfs_dir_item_key_to_cpu(eb, di, &location);
280 pr_info("\t\tlocation key (%llu %u %llu) type %d\n",
281 location.objectid, location.type, location.offset,
282 btrfs_dir_ftype(eb, di));
283 pr_info("\t\ttransid %llu data_len %u name_len %u\n",
284 btrfs_dir_transid(eb, di), data_len, name_len);
285 di = (struct btrfs_dir_item *)((char *)di + len);
286 cur += len;
287 }
288 }
289
print_inode_ref_item(const struct extent_buffer * eb,int i)290 static void print_inode_ref_item(const struct extent_buffer *eb, int i)
291 {
292 const u32 size = btrfs_item_size(eb, i);
293 struct btrfs_inode_ref *ref = btrfs_item_ptr(eb, i, struct btrfs_inode_ref);
294 u32 cur = 0;
295
296 while (cur < size) {
297 const u64 index = btrfs_inode_ref_index(eb, ref);
298 const u32 name_len = btrfs_inode_ref_name_len(eb, ref);
299 const u32 len = sizeof(*ref) + name_len;
300
301 pr_info("\t\tindex %llu name_len %u\n", index, name_len);
302 ref = (struct btrfs_inode_ref *)((char *)ref + len);
303 cur += len;
304 }
305 }
306
print_inode_extref_item(const struct extent_buffer * eb,int i)307 static void print_inode_extref_item(const struct extent_buffer *eb, int i)
308 {
309 const u32 size = btrfs_item_size(eb, i);
310 struct btrfs_inode_extref *extref;
311 u32 cur = 0;
312
313 extref = btrfs_item_ptr(eb, i, struct btrfs_inode_extref);
314 while (cur < size) {
315 const u64 index = btrfs_inode_extref_index(eb, extref);
316 const u32 name_len = btrfs_inode_extref_name_len(eb, extref);
317 const u64 parent = btrfs_inode_extref_parent(eb, extref);
318 const u32 len = sizeof(*extref) + name_len;
319
320 pr_info("\t\tindex %llu parent %llu name_len %u\n",
321 index, parent, name_len);
322 extref = (struct btrfs_inode_extref *)((char *)extref + len);
323 cur += len;
324 }
325 }
326
print_dir_log_index_item(const struct extent_buffer * eb,int i)327 static void print_dir_log_index_item(const struct extent_buffer *eb, int i)
328 {
329 struct btrfs_dir_log_item *dlog;
330
331 dlog = btrfs_item_ptr(eb, i, struct btrfs_dir_log_item);
332 pr_info("\t\tdir log end %llu\n", btrfs_dir_log_end(eb, dlog));
333 }
334
print_extent_csum(const struct extent_buffer * eb,int i)335 static void print_extent_csum(const struct extent_buffer *eb, int i)
336 {
337 const struct btrfs_fs_info *fs_info = eb->fs_info;
338 const u32 size = btrfs_item_size(eb, i);
339 const u32 csum_bytes = (size / fs_info->csum_size) * fs_info->sectorsize;
340 struct btrfs_key key;
341
342 btrfs_item_key_to_cpu(eb, &key, i);
343 pr_info("\t\trange start %llu end %llu length %u\n",
344 key.offset, key.offset + csum_bytes, csum_bytes);
345 }
346
print_file_extent_item(const struct extent_buffer * eb,int i)347 static void print_file_extent_item(const struct extent_buffer *eb, int i)
348 {
349 struct btrfs_file_extent_item *fi;
350
351 fi = btrfs_item_ptr(eb, i, struct btrfs_file_extent_item);
352 pr_info("\t\tgeneration %llu type %hhu\n",
353 btrfs_file_extent_generation(eb, fi),
354 btrfs_file_extent_type(eb, fi));
355
356 if (btrfs_file_extent_type(eb, fi) == BTRFS_FILE_EXTENT_INLINE) {
357 pr_info("\t\tinline extent data size %u ram_bytes %llu compression %hhu\n",
358 btrfs_file_extent_inline_item_len(eb, i),
359 btrfs_file_extent_ram_bytes(eb, fi),
360 btrfs_file_extent_compression(eb, fi));
361 return;
362 }
363
364 pr_info("\t\textent data disk bytenr %llu nr %llu\n",
365 btrfs_file_extent_disk_bytenr(eb, fi),
366 btrfs_file_extent_disk_num_bytes(eb, fi));
367 pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
368 btrfs_file_extent_offset(eb, fi),
369 btrfs_file_extent_num_bytes(eb, fi),
370 btrfs_file_extent_ram_bytes(eb, fi));
371 pr_info("\t\textent compression %hhu\n",
372 btrfs_file_extent_compression(eb, fi));
373 }
374
key_type_string(const struct btrfs_key * key,char * buf,int buf_size)375 static void key_type_string(const struct btrfs_key *key, char *buf, int buf_size)
376 {
377 static const char *key_to_str[256] = {
378 [BTRFS_INODE_ITEM_KEY] = "INODE_ITEM",
379 [BTRFS_INODE_REF_KEY] = "INODE_REF",
380 [BTRFS_INODE_EXTREF_KEY] = "INODE_EXTREF",
381 [BTRFS_DIR_ITEM_KEY] = "DIR_ITEM",
382 [BTRFS_DIR_INDEX_KEY] = "DIR_INDEX",
383 [BTRFS_DIR_LOG_ITEM_KEY] = "DIR_LOG_ITEM",
384 [BTRFS_DIR_LOG_INDEX_KEY] = "DIR_LOG_INDEX",
385 [BTRFS_XATTR_ITEM_KEY] = "XATTR_ITEM",
386 [BTRFS_VERITY_DESC_ITEM_KEY] = "VERITY_DESC_ITEM",
387 [BTRFS_VERITY_MERKLE_ITEM_KEY] = "VERITY_MERKLE_ITEM",
388 [BTRFS_ORPHAN_ITEM_KEY] = "ORPHAN_ITEM",
389 [BTRFS_ROOT_ITEM_KEY] = "ROOT_ITEM",
390 [BTRFS_ROOT_REF_KEY] = "ROOT_REF",
391 [BTRFS_ROOT_BACKREF_KEY] = "ROOT_BACKREF",
392 [BTRFS_EXTENT_ITEM_KEY] = "EXTENT_ITEM",
393 [BTRFS_METADATA_ITEM_KEY] = "METADATA_ITEM",
394 [BTRFS_TREE_BLOCK_REF_KEY] = "TREE_BLOCK_REF",
395 [BTRFS_SHARED_BLOCK_REF_KEY] = "SHARED_BLOCK_REF",
396 [BTRFS_EXTENT_DATA_REF_KEY] = "EXTENT_DATA_REF",
397 [BTRFS_SHARED_DATA_REF_KEY] = "SHARED_DATA_REF",
398 [BTRFS_EXTENT_OWNER_REF_KEY] = "EXTENT_OWNER_REF",
399 [BTRFS_EXTENT_CSUM_KEY] = "EXTENT_CSUM",
400 [BTRFS_EXTENT_DATA_KEY] = "EXTENT_DATA",
401 [BTRFS_BLOCK_GROUP_ITEM_KEY] = "BLOCK_GROUP_ITEM",
402 [BTRFS_FREE_SPACE_INFO_KEY] = "FREE_SPACE_INFO",
403 [BTRFS_FREE_SPACE_EXTENT_KEY] = "FREE_SPACE_EXTENT",
404 [BTRFS_FREE_SPACE_BITMAP_KEY] = "FREE_SPACE_BITMAP",
405 [BTRFS_CHUNK_ITEM_KEY] = "CHUNK_ITEM",
406 [BTRFS_DEV_ITEM_KEY] = "DEV_ITEM",
407 [BTRFS_DEV_EXTENT_KEY] = "DEV_EXTENT",
408 [BTRFS_TEMPORARY_ITEM_KEY] = "TEMPORARY_ITEM",
409 [BTRFS_DEV_REPLACE_KEY] = "DEV_REPLACE",
410 [BTRFS_STRING_ITEM_KEY] = "STRING_ITEM",
411 [BTRFS_QGROUP_STATUS_KEY] = "QGROUP_STATUS",
412 [BTRFS_QGROUP_RELATION_KEY] = "QGROUP_RELATION",
413 [BTRFS_QGROUP_INFO_KEY] = "QGROUP_INFO",
414 [BTRFS_QGROUP_LIMIT_KEY] = "QGROUP_LIMIT",
415 [BTRFS_PERSISTENT_ITEM_KEY] = "PERSISTENT_ITEM",
416 [BTRFS_UUID_KEY_SUBVOL] = "UUID_KEY_SUBVOL",
417 [BTRFS_UUID_KEY_RECEIVED_SUBVOL] = "UUID_KEY_RECEIVED_SUBVOL",
418 [BTRFS_RAID_STRIPE_KEY] = "RAID_STRIPE",
419 };
420
421 if (key->type == 0 && key->objectid == BTRFS_FREE_SPACE_OBJECTID)
422 scnprintf(buf, buf_size, "UNTYPED");
423 else if (key_to_str[key->type])
424 scnprintf(buf, buf_size, key_to_str[key->type]);
425 else
426 scnprintf(buf, buf_size, "UNKNOWN.%d", key->type);
427 }
428
btrfs_print_leaf(const struct extent_buffer * l)429 void btrfs_print_leaf(const struct extent_buffer *l)
430 {
431 struct btrfs_fs_info *fs_info;
432 int i;
433 u32 type, nr;
434 struct btrfs_root_item *ri;
435 struct btrfs_block_group_item *bi;
436 struct btrfs_extent_data_ref *dref;
437 struct btrfs_shared_data_ref *sref;
438 struct btrfs_dev_extent *dev_extent;
439 struct btrfs_key key;
440
441 if (!l)
442 return;
443
444 fs_info = l->fs_info;
445 nr = btrfs_header_nritems(l);
446
447 btrfs_info(fs_info,
448 "leaf %llu gen %llu total ptrs %d free space %d owner %llu",
449 btrfs_header_bytenr(l), btrfs_header_generation(l), nr,
450 btrfs_leaf_free_space(l), btrfs_header_owner(l));
451 print_eb_refs_lock(l);
452 for (i = 0 ; i < nr ; i++) {
453 char key_buf[KEY_TYPE_BUF_SIZE];
454
455 btrfs_item_key_to_cpu(l, &key, i);
456 type = key.type;
457 key_type_string(&key, key_buf, KEY_TYPE_BUF_SIZE);
458
459 pr_info("\titem %d key (%llu %s %llu) itemoff %d itemsize %d\n",
460 i, key.objectid, key_buf, key.offset,
461 btrfs_item_offset(l, i), btrfs_item_size(l, i));
462 switch (type) {
463 case BTRFS_INODE_ITEM_KEY:
464 print_inode_item(l, i);
465 break;
466 case BTRFS_INODE_REF_KEY:
467 print_inode_ref_item(l, i);
468 break;
469 case BTRFS_INODE_EXTREF_KEY:
470 print_inode_extref_item(l, i);
471 break;
472 case BTRFS_DIR_ITEM_KEY:
473 case BTRFS_DIR_INDEX_KEY:
474 case BTRFS_XATTR_ITEM_KEY:
475 print_dir_item(l, i);
476 break;
477 case BTRFS_DIR_LOG_INDEX_KEY:
478 print_dir_log_index_item(l, i);
479 break;
480 case BTRFS_EXTENT_CSUM_KEY:
481 print_extent_csum(l, i);
482 break;
483 case BTRFS_ROOT_ITEM_KEY:
484 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
485 pr_info("\t\troot data bytenr %llu refs %u\n",
486 btrfs_disk_root_bytenr(l, ri),
487 btrfs_disk_root_refs(l, ri));
488 break;
489 case BTRFS_EXTENT_ITEM_KEY:
490 case BTRFS_METADATA_ITEM_KEY:
491 print_extent_item(l, i, type);
492 break;
493 case BTRFS_TREE_BLOCK_REF_KEY:
494 pr_info("\t\ttree block backref\n");
495 break;
496 case BTRFS_SHARED_BLOCK_REF_KEY:
497 pr_info("\t\tshared block backref\n");
498 break;
499 case BTRFS_EXTENT_DATA_REF_KEY:
500 dref = btrfs_item_ptr(l, i,
501 struct btrfs_extent_data_ref);
502 print_extent_data_ref(l, dref);
503 break;
504 case BTRFS_SHARED_DATA_REF_KEY:
505 sref = btrfs_item_ptr(l, i,
506 struct btrfs_shared_data_ref);
507 pr_info("\t\tshared data backref count %u\n",
508 btrfs_shared_data_ref_count(l, sref));
509 break;
510 case BTRFS_EXTENT_DATA_KEY:
511 print_file_extent_item(l, i);
512 break;
513 case BTRFS_BLOCK_GROUP_ITEM_KEY:
514 bi = btrfs_item_ptr(l, i,
515 struct btrfs_block_group_item);
516 pr_info(
517 "\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
518 btrfs_block_group_used(l, bi),
519 btrfs_block_group_chunk_objectid(l, bi),
520 btrfs_block_group_flags(l, bi));
521 break;
522 case BTRFS_CHUNK_ITEM_KEY:
523 print_chunk(l, btrfs_item_ptr(l, i,
524 struct btrfs_chunk));
525 break;
526 case BTRFS_DEV_ITEM_KEY:
527 print_dev_item(l, btrfs_item_ptr(l, i,
528 struct btrfs_dev_item));
529 break;
530 case BTRFS_DEV_EXTENT_KEY:
531 dev_extent = btrfs_item_ptr(l, i,
532 struct btrfs_dev_extent);
533 pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
534 btrfs_dev_extent_chunk_tree(l, dev_extent),
535 btrfs_dev_extent_chunk_objectid(l, dev_extent),
536 btrfs_dev_extent_chunk_offset(l, dev_extent),
537 btrfs_dev_extent_length(l, dev_extent));
538 break;
539 case BTRFS_PERSISTENT_ITEM_KEY:
540 pr_info("\t\tpersistent item objectid %llu offset %llu\n",
541 key.objectid, key.offset);
542 switch (key.objectid) {
543 case BTRFS_DEV_STATS_OBJECTID:
544 pr_info("\t\tdevice stats\n");
545 break;
546 default:
547 pr_info("\t\tunknown persistent item\n");
548 }
549 break;
550 case BTRFS_TEMPORARY_ITEM_KEY:
551 pr_info("\t\ttemporary item objectid %llu offset %llu\n",
552 key.objectid, key.offset);
553 switch (key.objectid) {
554 case BTRFS_BALANCE_OBJECTID:
555 pr_info("\t\tbalance status\n");
556 break;
557 default:
558 pr_info("\t\tunknown temporary item\n");
559 }
560 break;
561 case BTRFS_DEV_REPLACE_KEY:
562 pr_info("\t\tdev replace\n");
563 break;
564 case BTRFS_UUID_KEY_SUBVOL:
565 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
566 print_uuid_item(l, btrfs_item_ptr_offset(l, i),
567 btrfs_item_size(l, i));
568 break;
569 case BTRFS_RAID_STRIPE_KEY:
570 print_raid_stripe_key(l, btrfs_item_size(l, i),
571 btrfs_item_ptr(l, i, struct btrfs_stripe_extent));
572 break;
573 }
574 }
575 }
576
btrfs_print_tree(const struct extent_buffer * c,bool follow)577 void btrfs_print_tree(const struct extent_buffer *c, bool follow)
578 {
579 struct btrfs_fs_info *fs_info;
580 int i; u32 nr;
581 struct btrfs_key key;
582 int level;
583
584 if (!c)
585 return;
586 fs_info = c->fs_info;
587 nr = btrfs_header_nritems(c);
588 level = btrfs_header_level(c);
589 if (level == 0) {
590 btrfs_print_leaf(c);
591 return;
592 }
593 btrfs_info(fs_info,
594 "node %llu level %d gen %llu total ptrs %d free spc %u owner %llu",
595 btrfs_header_bytenr(c), level, btrfs_header_generation(c),
596 nr, (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr,
597 btrfs_header_owner(c));
598 print_eb_refs_lock(c);
599 for (i = 0; i < nr; i++) {
600 btrfs_node_key_to_cpu(c, &key, i);
601 pr_info("\tkey %d (%llu %u %llu) block %llu gen %llu\n",
602 i, key.objectid, key.type, key.offset,
603 btrfs_node_blockptr(c, i),
604 btrfs_node_ptr_generation(c, i));
605 }
606 if (!follow)
607 return;
608 for (i = 0; i < nr; i++) {
609 struct btrfs_tree_parent_check check = {
610 .level = level - 1,
611 .transid = btrfs_node_ptr_generation(c, i),
612 .owner_root = btrfs_header_owner(c),
613 .has_first_key = true
614 };
615 struct extent_buffer *next;
616
617 btrfs_node_key_to_cpu(c, &check.first_key, i);
618 next = read_tree_block(fs_info, btrfs_node_blockptr(c, i), &check);
619 if (IS_ERR(next))
620 continue;
621 if (!extent_buffer_uptodate(next)) {
622 free_extent_buffer(next);
623 continue;
624 }
625
626 if (btrfs_is_leaf(next) &&
627 level != 1)
628 BUG();
629 if (btrfs_header_level(next) !=
630 level - 1)
631 BUG();
632 btrfs_print_tree(next, follow);
633 free_extent_buffer(next);
634 }
635 }
636