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 <uuid/uuid.h>
22 #include "kerncompat.h"
23 #include "radix-tree.h"
27 static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
28 struct btrfs_dir_item *di)
35 char namebuf[BTRFS_NAME_LEN];
36 struct btrfs_disk_key location;
38 total = btrfs_item_size(eb, item);
40 btrfs_dir_item_key(eb, di, &location);
41 printf("\t\tdir index %llu type %u\n",
42 (unsigned long long)btrfs_disk_key_objectid(&location),
43 btrfs_dir_type(eb, di));
44 name_len = btrfs_dir_name_len(eb, di);
45 data_len = btrfs_dir_data_len(eb, di);
46 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
47 read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
48 printf("\t\tnamelen %u datalen %u name: %.*s\n",
49 name_len, data_len, len, namebuf);
50 len = sizeof(*di) + name_len + data_len;
51 di = (struct btrfs_dir_item *)((char *)di + len);
57 static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
58 struct btrfs_inode_ref *ref)
65 char namebuf[BTRFS_NAME_LEN];
66 total = btrfs_item_size(eb, item);
68 name_len = btrfs_inode_ref_name_len(eb, ref);
69 index = btrfs_inode_ref_index(eb, ref);
70 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
71 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
72 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
73 index, name_len, len, namebuf);
74 len = sizeof(*ref) + name_len;
75 ref = (struct btrfs_inode_ref *)((char *)ref + len);
81 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
83 int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
85 printf("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
86 (unsigned long long)btrfs_chunk_length(eb, chunk),
87 (unsigned long long)btrfs_chunk_owner(eb, chunk),
88 (unsigned long long)btrfs_chunk_type(eb, chunk),
90 for (i = 0 ; i < num_stripes ; i++) {
91 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
92 (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
93 (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
96 static void print_dev_item(struct extent_buffer *eb,
97 struct btrfs_dev_item *dev_item)
99 printf("\t\tdev item devid %llu "
100 "total_bytes %llu bytes used %Lu\n",
101 (unsigned long long)btrfs_device_id(eb, dev_item),
102 (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
103 (unsigned long long)btrfs_device_bytes_used(eb, dev_item));
106 static void print_uuids(struct extent_buffer *eb)
110 u8 disk_uuid[BTRFS_UUID_SIZE];
112 read_extent_buffer(eb, disk_uuid, (unsigned long)btrfs_header_fsid(eb),
116 uuid_unparse(disk_uuid, fs_uuid);
118 read_extent_buffer(eb, disk_uuid,
119 (unsigned long)btrfs_header_chunk_tree_uuid(eb),
122 chunk_uuid[36] = '\0';
123 uuid_unparse(disk_uuid, chunk_uuid);
124 printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
127 static void print_file_extent_item(struct extent_buffer *eb,
128 struct btrfs_item *item,
129 struct btrfs_file_extent_item *fi)
131 int extent_type = btrfs_file_extent_type(eb, fi);
133 if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
134 printf("\t\tinline extent data size %u "
135 "ram %u compress %d\n",
136 btrfs_file_extent_inline_item_len(eb, item),
137 btrfs_file_extent_inline_len(eb, fi),
138 btrfs_file_extent_compression(eb, fi));
141 if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
142 printf("\t\tprealloc data disk byte %llu nr %llu\n",
143 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
144 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
145 printf("\t\tprealloc data offset %llu nr %llu\n",
146 (unsigned long long)btrfs_file_extent_offset(eb, fi),
147 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
150 printf("\t\textent data disk byte %llu nr %llu\n",
151 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
152 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
153 printf("\t\textent data offset %llu nr %llu ram %llu\n",
154 (unsigned long long)btrfs_file_extent_offset(eb, fi),
155 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
156 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
157 printf("\t\textent compression %d\n",
158 btrfs_file_extent_compression(eb, fi));
162 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
164 struct btrfs_root_ref *ref;
165 char namebuf[BTRFS_NAME_LEN];
168 ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
169 namelen = btrfs_root_ref_name_len(leaf, ref);
170 read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
171 printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
172 (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
173 (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
177 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
181 struct btrfs_item *item;
182 struct btrfs_extent_item *ei;
183 struct btrfs_root_item *ri;
184 struct btrfs_dir_item *di;
185 struct btrfs_inode_item *ii;
186 struct btrfs_file_extent_item *fi;
187 struct btrfs_csum_item *ci;
188 struct btrfs_block_group_item *bi;
189 struct btrfs_extent_ref *ref;
190 struct btrfs_inode_ref *iref;
191 struct btrfs_dev_extent *dev_extent;
192 struct btrfs_disk_key disk_key;
193 struct btrfs_root_item root_item;
194 struct btrfs_block_group_item bg_item;
195 u32 nr = btrfs_header_nritems(l);
198 printf("leaf %llu ptrs %d free space %d generation %llu owner %llu\n",
199 (unsigned long long)btrfs_header_bytenr(l), nr,
200 btrfs_leaf_free_space(root, l),
201 (unsigned long long)btrfs_header_generation(l),
202 (unsigned long long)btrfs_header_owner(l));
205 for (i = 0 ; i < nr ; i++) {
206 item = btrfs_item_nr(l, i);
207 btrfs_item_key(l, &disk_key, i);
208 type = btrfs_disk_key_type(&disk_key);
209 printf("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n",
211 (unsigned long long)btrfs_disk_key_objectid(&disk_key),
212 btrfs_disk_key_type(&disk_key),
213 (unsigned long long)btrfs_disk_key_offset(&disk_key),
214 btrfs_item_offset(l, item),
215 btrfs_item_size(l, item));
217 case BTRFS_INODE_ITEM_KEY:
218 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
219 printf("\t\tinode generation %llu size %llu block group %llu mode %o links %u\n",
220 (unsigned long long)btrfs_inode_generation(l, ii),
221 (unsigned long long)btrfs_inode_size(l, ii),
222 (unsigned long long)btrfs_inode_block_group(l,ii),
223 btrfs_inode_mode(l, ii),
224 btrfs_inode_nlink(l, ii));
226 case BTRFS_INODE_REF_KEY:
227 iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
228 print_inode_ref_item(l, item, iref);
230 case BTRFS_DIR_ITEM_KEY:
231 case BTRFS_DIR_INDEX_KEY:
232 case BTRFS_XATTR_ITEM_KEY:
233 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
234 print_dir_item(l, item, di);
236 case BTRFS_ORPHAN_ITEM_KEY:
237 printf("\t\torphan item\n");
239 case BTRFS_ROOT_ITEM_KEY:
240 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
241 read_extent_buffer(l, &root_item, (unsigned long)ri, sizeof(root_item));
242 printf("\t\troot data bytenr %llu level %d dirid %llu refs %u\n",
243 (unsigned long long)btrfs_root_bytenr(&root_item),
244 btrfs_root_level(&root_item),
245 (unsigned long long)btrfs_root_dirid(&root_item),
246 btrfs_root_refs(&root_item));
247 if (1 || btrfs_root_refs(&root_item) == 0) {
248 struct btrfs_key drop_key;
249 btrfs_disk_key_to_cpu(&drop_key,
250 &root_item.drop_progress);
251 printf("\t\tdrop key %Lu %x %Lu level %d\n",
252 (unsigned long long)drop_key.objectid,
254 (unsigned long long)drop_key.offset,
255 root_item.drop_level);
258 case BTRFS_ROOT_REF_KEY:
259 print_root_ref(l, i, "ref");
261 case BTRFS_ROOT_BACKREF_KEY:
262 print_root_ref(l, i, "backref");
264 case BTRFS_EXTENT_ITEM_KEY:
265 ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
266 printf("\t\textent data refs %u\n",
267 btrfs_extent_refs(l, ei));
269 case BTRFS_EXTENT_REF_KEY:
270 ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref);
271 printf("\t\textent back ref root %llu gen %llu "
272 "owner %llu num_refs %lu\n",
273 (unsigned long long)btrfs_ref_root(l, ref),
274 (unsigned long long)btrfs_ref_generation(l, ref),
275 (unsigned long long)btrfs_ref_objectid(l, ref),
276 (unsigned long)btrfs_ref_num_refs(l, ref));
278 case BTRFS_CSUM_ITEM_KEY:
279 ci = btrfs_item_ptr(l, i, struct btrfs_csum_item);
280 printf("\t\tcsum item\n");
282 case BTRFS_EXTENT_DATA_KEY:
283 fi = btrfs_item_ptr(l, i,
284 struct btrfs_file_extent_item);
285 print_file_extent_item(l, item, fi);
287 case BTRFS_BLOCK_GROUP_ITEM_KEY:
288 bi = btrfs_item_ptr(l, i,
289 struct btrfs_block_group_item);
290 read_extent_buffer(l, &bg_item, (unsigned long)bi,
292 printf("\t\tblock group used %llu flags %llu\n",
293 (unsigned long long)btrfs_block_group_used(&bg_item),
294 (unsigned long long)btrfs_block_group_flags(&bg_item));
296 case BTRFS_CHUNK_ITEM_KEY:
297 print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
299 case BTRFS_DEV_ITEM_KEY:
300 print_dev_item(l, btrfs_item_ptr(l, i,
301 struct btrfs_dev_item));
303 case BTRFS_DEV_EXTENT_KEY:
304 dev_extent = btrfs_item_ptr(l, i,
305 struct btrfs_dev_extent);
306 printf("\t\tdev extent chunk_tree %llu\n"
307 "\t\tchunk objectid %llu chunk offset %llu "
310 btrfs_dev_extent_chunk_tree(l, dev_extent),
312 btrfs_dev_extent_chunk_objectid(l, dev_extent),
314 btrfs_dev_extent_chunk_offset(l, dev_extent),
316 btrfs_dev_extent_length(l, dev_extent));
318 case BTRFS_STRING_ITEM_KEY:
319 /* dirty, but it's simple */
320 str = l->data + btrfs_item_ptr_offset(l, i);
321 printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
328 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb)
333 struct btrfs_key key;
337 nr = btrfs_header_nritems(eb);
338 if (btrfs_is_leaf(eb)) {
339 btrfs_print_leaf(root, eb);
342 printf("node %llu level %d ptrs %d free %u generation %llu owner %llu\n",
343 (unsigned long long)eb->start,
344 btrfs_header_level(eb), nr,
345 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
346 (unsigned long long)btrfs_header_generation(eb),
347 (unsigned long long)btrfs_header_owner(eb));
350 size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
351 for (i = 0; i < nr; i++) {
352 u64 blocknr = btrfs_node_blockptr(eb, i);
353 btrfs_node_key_to_cpu(eb, &key, i);
354 printf("\tkey %d (%llu %x %llu) block %llu (%llu) gen %llu\n",
356 (unsigned long long)key.objectid,
358 (unsigned long long)key.offset,
359 (unsigned long long)blocknr,
360 (unsigned long long)blocknr / size,
361 (unsigned long long)btrfs_node_ptr_generation(eb, i));
364 for (i = 0; i < nr; i++) {
365 struct extent_buffer *next = read_tree_block(root,
366 btrfs_node_blockptr(eb, i),
368 btrfs_node_ptr_generation(eb, i));
369 if (btrfs_is_leaf(next) &&
370 btrfs_header_level(eb) != 1)
372 if (btrfs_header_level(next) !=
373 btrfs_header_level(eb) - 1)
375 btrfs_print_tree(root, next);
376 free_extent_buffer(next);