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c1d7c514 | 1 | // SPDX-License-Identifier: GPL-2.0 |
6cbd5570 CM |
2 | /* |
3 | * Copyright (C) 2007 Oracle. All rights reserved. | |
6cbd5570 CM |
4 | */ |
5 | ||
5de08d7d CM |
6 | #include "ctree.h" |
7 | #include "disk-io.h" | |
35b7e476 | 8 | #include "print-tree.h" |
5de08d7d | 9 | |
0b86a832 CM |
10 | static 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; | |
62e85577 | 14 | pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n", |
c1c9ff7c GU |
15 | btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk), |
16 | btrfs_chunk_type(eb, chunk), num_stripes); | |
0b86a832 | 17 | for (i = 0 ; i < num_stripes ; i++) { |
62e85577 | 18 | pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i, |
c1c9ff7c GU |
19 | btrfs_stripe_devid_nr(eb, chunk, i), |
20 | btrfs_stripe_offset_nr(eb, chunk, i)); | |
0b86a832 CM |
21 | } |
22 | } | |
23 | static void print_dev_item(struct extent_buffer *eb, | |
24 | struct btrfs_dev_item *dev_item) | |
25 | { | |
62e85577 | 26 | pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n", |
c1c9ff7c GU |
27 | btrfs_device_id(eb, dev_item), |
28 | btrfs_device_total_bytes(eb, dev_item), | |
29 | btrfs_device_bytes_used(eb, dev_item)); | |
0b86a832 | 30 | } |
5d4f98a2 YZ |
31 | static void print_extent_data_ref(struct extent_buffer *eb, |
32 | struct btrfs_extent_data_ref *ref) | |
33 | { | |
64ecdb64 | 34 | pr_cont("extent data backref root %llu objectid %llu offset %llu count %u\n", |
c1c9ff7c GU |
35 | btrfs_extent_data_ref_root(eb, ref), |
36 | btrfs_extent_data_ref_objectid(eb, ref), | |
37 | btrfs_extent_data_ref_offset(eb, ref), | |
5d4f98a2 YZ |
38 | btrfs_extent_data_ref_count(eb, ref)); |
39 | } | |
40 | ||
be2c765d | 41 | static void print_extent_item(struct extent_buffer *eb, int slot, int type) |
5d4f98a2 YZ |
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; | |
5d4f98a2 YZ |
50 | u32 item_size = btrfs_item_size_nr(eb, slot); |
51 | u64 flags; | |
52 | u64 offset; | |
64ecdb64 | 53 | int ref_index = 0; |
5d4f98a2 YZ |
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); | |
62e85577 | 60 | pr_info("\t\textent refs %u\n", |
5d4f98a2 YZ |
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 | ||
62e85577 | 71 | pr_info("\t\textent refs %llu gen %llu flags %llu\n", |
c1c9ff7c GU |
72 | btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei), |
73 | flags); | |
5d4f98a2 | 74 | |
be2c765d JB |
75 | if ((type == BTRFS_EXTENT_ITEM_KEY) && |
76 | flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { | |
5d4f98a2 YZ |
77 | struct btrfs_tree_block_info *info; |
78 | info = (struct btrfs_tree_block_info *)(ei + 1); | |
79 | btrfs_tree_block_key(eb, info, &key); | |
62e85577 | 80 | pr_info("\t\ttree block key (%llu %u %llu) level %d\n", |
c1c9ff7c GU |
81 | btrfs_disk_key_objectid(&key), key.type, |
82 | btrfs_disk_key_offset(&key), | |
5d4f98a2 YZ |
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); | |
64ecdb64 | 95 | pr_info("\t\tref#%d: ", ref_index++); |
5d4f98a2 YZ |
96 | switch (type) { |
97 | case BTRFS_TREE_BLOCK_REF_KEY: | |
64ecdb64 | 98 | pr_cont("tree block backref root %llu\n", offset); |
5d4f98a2 YZ |
99 | break; |
100 | case BTRFS_SHARED_BLOCK_REF_KEY: | |
64ecdb64 LB |
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); | |
5d4f98a2 YZ |
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); | |
64ecdb64 | 116 | pr_cont("shared data backref parent %llu count %u\n", |
c1c9ff7c | 117 | offset, btrfs_shared_data_ref_count(eb, sref)); |
64ecdb64 LB |
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); | |
5d4f98a2 YZ |
125 | break; |
126 | default: | |
64ecdb64 | 127 | pr_cont("(extent %llu has INVALID ref type %d)\n", |
07638ea5 LB |
128 | eb->start, type); |
129 | return; | |
5d4f98a2 YZ |
130 | } |
131 | ptr += btrfs_extent_inline_ref_size(type); | |
132 | } | |
133 | WARN_ON(ptr > end); | |
134 | } | |
135 | ||
136 | #ifdef BTRFS_COMPAT_EXTENT_TREE_V0 | |
137 | static 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); | |
5d163e0e | 142 | printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n", |
c1c9ff7c GU |
143 | btrfs_ref_root_v0(eb, ref0), |
144 | btrfs_ref_generation_v0(eb, ref0), | |
145 | btrfs_ref_objectid_v0(eb, ref0), | |
5d4f98a2 YZ |
146 | (unsigned long)btrfs_ref_count_v0(eb, ref0)); |
147 | } | |
148 | #endif | |
149 | ||
8f8ae8e2 SB |
150 | static void print_uuid_item(struct extent_buffer *l, unsigned long offset, |
151 | u32 item_size) | |
152 | { | |
153 | if (!IS_ALIGNED(item_size, sizeof(u64))) { | |
efe120a0 | 154 | pr_warn("BTRFS: uuid item with illegal size %lu!\n", |
8f8ae8e2 SB |
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)); | |
62e85577 | 162 | pr_info("\t\tsubvol_id %llu\n", |
8f8ae8e2 SB |
163 | (unsigned long long)le64_to_cpu(subvol_id)); |
164 | item_size -= sizeof(u64); | |
165 | offset += sizeof(u64); | |
166 | } | |
167 | } | |
168 | ||
a4f78750 | 169 | void btrfs_print_leaf(struct extent_buffer *l) |
5de08d7d | 170 | { |
a4f78750 | 171 | struct btrfs_fs_info *fs_info; |
5de08d7d | 172 | int i; |
068132ba | 173 | u32 type, nr; |
0783fcfc | 174 | struct btrfs_item *item; |
3768f368 | 175 | struct btrfs_root_item *ri; |
1d4f6404 | 176 | struct btrfs_dir_item *di; |
293ffd5f | 177 | struct btrfs_inode_item *ii; |
9078a3e1 | 178 | struct btrfs_block_group_item *bi; |
8c2383c3 | 179 | struct btrfs_file_extent_item *fi; |
5d4f98a2 YZ |
180 | struct btrfs_extent_data_ref *dref; |
181 | struct btrfs_shared_data_ref *sref; | |
182 | struct btrfs_dev_extent *dev_extent; | |
5f39d397 CM |
183 | struct btrfs_key key; |
184 | struct btrfs_key found_key; | |
1d4f6404 | 185 | |
068132ba DB |
186 | if (!l) |
187 | return; | |
188 | ||
a4f78750 | 189 | fs_info = l->fs_info; |
068132ba DB |
190 | nr = btrfs_header_nritems(l); |
191 | ||
c0872323 QW |
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)); | |
5de08d7d | 196 | for (i = 0 ; i < nr ; i++) { |
dd3cc16b | 197 | item = btrfs_item_nr(i); |
5f39d397 | 198 | btrfs_item_key_to_cpu(l, &key, i); |
962a298f | 199 | type = key.type; |
62e85577 | 200 | pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n", |
c1c9ff7c | 201 | i, key.objectid, type, key.offset, |
5f39d397 | 202 | btrfs_item_offset(l, item), btrfs_item_size(l, item)); |
62e2749e CM |
203 | switch (type) { |
204 | case BTRFS_INODE_ITEM_KEY: | |
293ffd5f | 205 | ii = btrfs_item_ptr(l, i, struct btrfs_inode_item); |
62e85577 | 206 | pr_info("\t\tinode generation %llu size %llu mode %o\n", |
d397712b | 207 | btrfs_inode_generation(l, ii), |
c1c9ff7c | 208 | btrfs_inode_size(l, ii), |
5f39d397 | 209 | btrfs_inode_mode(l, ii)); |
62e2749e CM |
210 | break; |
211 | case BTRFS_DIR_ITEM_KEY: | |
1d4f6404 | 212 | di = btrfs_item_ptr(l, i, struct btrfs_dir_item); |
5f39d397 | 213 | btrfs_dir_item_key_to_cpu(l, di, &found_key); |
62e85577 | 214 | pr_info("\t\tdir oid %llu type %u\n", |
c1c9ff7c | 215 | found_key.objectid, |
5f39d397 | 216 | btrfs_dir_type(l, di)); |
62e2749e CM |
217 | break; |
218 | case BTRFS_ROOT_ITEM_KEY: | |
219 | ri = btrfs_item_ptr(l, i, struct btrfs_root_item); | |
62e85577 | 220 | pr_info("\t\troot data bytenr %llu refs %u\n", |
d397712b | 221 | btrfs_disk_root_bytenr(l, ri), |
5f39d397 | 222 | btrfs_disk_root_refs(l, ri)); |
62e2749e CM |
223 | break; |
224 | case BTRFS_EXTENT_ITEM_KEY: | |
be2c765d JB |
225 | case BTRFS_METADATA_ITEM_KEY: |
226 | print_extent_item(l, i, type); | |
62e2749e | 227 | break; |
5d4f98a2 | 228 | case BTRFS_TREE_BLOCK_REF_KEY: |
62e85577 | 229 | pr_info("\t\ttree block backref\n"); |
5d4f98a2 YZ |
230 | break; |
231 | case BTRFS_SHARED_BLOCK_REF_KEY: | |
62e85577 | 232 | pr_info("\t\tshared block backref\n"); |
5d4f98a2 YZ |
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); | |
62e85577 | 242 | pr_info("\t\tshared data backref count %u\n", |
5d4f98a2 | 243 | btrfs_shared_data_ref_count(l, sref)); |
7bb86316 | 244 | break; |
8c2383c3 CM |
245 | case BTRFS_EXTENT_DATA_KEY: |
246 | fi = btrfs_item_ptr(l, i, | |
247 | struct btrfs_file_extent_item); | |
5f39d397 | 248 | if (btrfs_file_extent_type(l, fi) == |
8c2383c3 | 249 | BTRFS_FILE_EXTENT_INLINE) { |
62e85577 | 250 | pr_info("\t\tinline extent data size %u\n", |
514ac8ad | 251 | btrfs_file_extent_inline_len(l, i, fi)); |
8c2383c3 CM |
252 | break; |
253 | } | |
62e85577 | 254 | pr_info("\t\textent data disk bytenr %llu nr %llu\n", |
d397712b | 255 | btrfs_file_extent_disk_bytenr(l, fi), |
d397712b | 256 | btrfs_file_extent_disk_num_bytes(l, fi)); |
62e85577 | 257 | pr_info("\t\textent data offset %llu nr %llu ram %llu\n", |
d397712b | 258 | btrfs_file_extent_offset(l, fi), |
d397712b | 259 | btrfs_file_extent_num_bytes(l, fi), |
d397712b | 260 | btrfs_file_extent_ram_bytes(l, fi)); |
8c2383c3 | 261 | break; |
5d4f98a2 YZ |
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 | |
333e8105 | 268 | break; |
9078a3e1 CM |
269 | case BTRFS_BLOCK_GROUP_ITEM_KEY: |
270 | bi = btrfs_item_ptr(l, i, | |
271 | struct btrfs_block_group_item); | |
555ba411 LB |
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)); | |
62e2749e | 277 | break; |
0b86a832 | 278 | case BTRFS_CHUNK_ITEM_KEY: |
d397712b CM |
279 | print_chunk(l, btrfs_item_ptr(l, i, |
280 | struct btrfs_chunk)); | |
0b86a832 CM |
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); | |
62e85577 | 289 | pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n", |
e17cade2 | 290 | btrfs_dev_extent_chunk_tree(l, dev_extent), |
e17cade2 | 291 | btrfs_dev_extent_chunk_objectid(l, dev_extent), |
e17cade2 | 292 | btrfs_dev_extent_chunk_offset(l, dev_extent), |
e17cade2 | 293 | btrfs_dev_extent_length(l, dev_extent)); |
0e636027 | 294 | break; |
585a3d0d | 295 | case BTRFS_PERSISTENT_ITEM_KEY: |
62e85577 | 296 | pr_info("\t\tpersistent item objectid %llu offset %llu\n", |
585a3d0d DS |
297 | key.objectid, key.offset); |
298 | switch (key.objectid) { | |
299 | case BTRFS_DEV_STATS_OBJECTID: | |
62e85577 | 300 | pr_info("\t\tdevice stats\n"); |
585a3d0d DS |
301 | break; |
302 | default: | |
62e85577 | 303 | pr_info("\t\tunknown persistent item\n"); |
585a3d0d | 304 | } |
733f4fbb | 305 | break; |
9f07e1d7 | 306 | case BTRFS_TEMPORARY_ITEM_KEY: |
62e85577 | 307 | pr_info("\t\ttemporary item objectid %llu offset %llu\n", |
9f07e1d7 DS |
308 | key.objectid, key.offset); |
309 | switch (key.objectid) { | |
310 | case BTRFS_BALANCE_OBJECTID: | |
62e85577 | 311 | pr_info("\t\tbalance status\n"); |
9f07e1d7 DS |
312 | break; |
313 | default: | |
62e85577 | 314 | pr_info("\t\tunknown temporary item\n"); |
9f07e1d7 DS |
315 | } |
316 | break; | |
a2bff640 | 317 | case BTRFS_DEV_REPLACE_KEY: |
62e85577 | 318 | pr_info("\t\tdev replace\n"); |
a2bff640 | 319 | break; |
8f8ae8e2 SB |
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; | |
62e2749e | 325 | }; |
5de08d7d CM |
326 | } |
327 | } | |
e20d96d6 | 328 | |
c0872323 | 329 | void btrfs_print_tree(struct extent_buffer *c, bool follow) |
5de08d7d | 330 | { |
abe60ba4 | 331 | struct btrfs_fs_info *fs_info; |
e17cade2 | 332 | int i; u32 nr; |
5f39d397 | 333 | struct btrfs_key key; |
db94535d | 334 | int level; |
5de08d7d | 335 | |
5f39d397 | 336 | if (!c) |
5de08d7d | 337 | return; |
abe60ba4 | 338 | fs_info = c->fs_info; |
5f39d397 | 339 | nr = btrfs_header_nritems(c); |
db94535d CM |
340 | level = btrfs_header_level(c); |
341 | if (level == 0) { | |
a4f78750 | 342 | btrfs_print_leaf(c); |
5de08d7d CM |
343 | return; |
344 | } | |
0b246afa | 345 | btrfs_info(fs_info, |
c0872323 QW |
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)); | |
5de08d7d | 350 | for (i = 0; i < nr; i++) { |
5f39d397 | 351 | btrfs_node_key_to_cpu(c, &key, i); |
c0872323 | 352 | pr_info("\tkey %d (%llu %u %llu) block %llu gen %llu\n", |
c1c9ff7c | 353 | i, key.objectid, key.type, key.offset, |
c0872323 QW |
354 | btrfs_node_blockptr(c, i), |
355 | btrfs_node_ptr_generation(c, i)); | |
5de08d7d | 356 | } |
c0872323 QW |
357 | if (!follow) |
358 | return; | |
5de08d7d | 359 | for (i = 0; i < nr; i++) { |
581c1760 QW |
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); | |
a42cbec9 LB |
367 | if (IS_ERR(next)) { |
368 | continue; | |
369 | } else if (!extent_buffer_uptodate(next)) { | |
370 | free_extent_buffer(next); | |
371 | continue; | |
372 | } | |
373 | ||
7518a238 | 374 | if (btrfs_is_leaf(next) && |
c271b492 | 375 | level != 1) |
5de08d7d | 376 | BUG(); |
5f39d397 | 377 | if (btrfs_header_level(next) != |
c271b492 | 378 | level - 1) |
5de08d7d | 379 | BUG(); |
c0872323 | 380 | btrfs_print_tree(next, follow); |
5f39d397 | 381 | free_extent_buffer(next); |
5de08d7d | 382 | } |
5de08d7d | 383 | } |