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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 printk(KERN_INFO "\t\tchunk length %llu owner %llu type %llu "
28 "num_stripes %d\n",
29 (unsigned long long)btrfs_chunk_length(eb, chunk),
30 (unsigned long long)btrfs_chunk_owner(eb, chunk),
31 (unsigned long long)btrfs_chunk_type(eb, chunk),
32 num_stripes);
33 for (i = 0 ; i < num_stripes ; i++) {
34 printk(KERN_INFO "\t\t\tstripe %d devid %llu offset %llu\n", i,
35 (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
36 (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
37 }
38}
39static void print_dev_item(struct extent_buffer *eb,
40 struct btrfs_dev_item *dev_item)
41{
42 printk(KERN_INFO "\t\tdev item devid %llu "
43 "total_bytes %llu bytes used %llu\n",
44 (unsigned long long)btrfs_device_id(eb, dev_item),
45 (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
46 (unsigned long long)btrfs_device_bytes_used(eb, dev_item));
47}
48static void print_extent_data_ref(struct extent_buffer *eb,
49 struct btrfs_extent_data_ref *ref)
50{
51 printk(KERN_INFO "\t\textent data backref root %llu "
52 "objectid %llu offset %llu count %u\n",
53 (unsigned long long)btrfs_extent_data_ref_root(eb, ref),
54 (unsigned long long)btrfs_extent_data_ref_objectid(eb, ref),
55 (unsigned long long)btrfs_extent_data_ref_offset(eb, ref),
56 btrfs_extent_data_ref_count(eb, ref));
57}
58
59static void print_extent_item(struct extent_buffer *eb, int slot)
60{
61 struct btrfs_extent_item *ei;
62 struct btrfs_extent_inline_ref *iref;
63 struct btrfs_extent_data_ref *dref;
64 struct btrfs_shared_data_ref *sref;
65 struct btrfs_disk_key key;
66 unsigned long end;
67 unsigned long ptr;
68 int type;
69 u32 item_size = btrfs_item_size_nr(eb, slot);
70 u64 flags;
71 u64 offset;
72
73 if (item_size < sizeof(*ei)) {
74#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
75 struct btrfs_extent_item_v0 *ei0;
76 BUG_ON(item_size != sizeof(*ei0));
77 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
78 printk(KERN_INFO "\t\textent refs %u\n",
79 btrfs_extent_refs_v0(eb, ei0));
80 return;
81#else
82 BUG();
83#endif
84 }
85
86 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
87 flags = btrfs_extent_flags(eb, ei);
88
89 printk(KERN_INFO "\t\textent refs %llu gen %llu flags %llu\n",
90 (unsigned long long)btrfs_extent_refs(eb, ei),
91 (unsigned long long)btrfs_extent_generation(eb, ei),
92 (unsigned long long)flags);
93
94 if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
95 struct btrfs_tree_block_info *info;
96 info = (struct btrfs_tree_block_info *)(ei + 1);
97 btrfs_tree_block_key(eb, info, &key);
98 printk(KERN_INFO "\t\ttree block key (%llu %x %llu) "
99 "level %d\n",
100 (unsigned long long)btrfs_disk_key_objectid(&key),
101 key.type,
102 (unsigned long long)btrfs_disk_key_offset(&key),
103 btrfs_tree_block_level(eb, info));
104 iref = (struct btrfs_extent_inline_ref *)(info + 1);
105 } else {
106 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
107 }
108
109 ptr = (unsigned long)iref;
110 end = (unsigned long)ei + item_size;
111 while (ptr < end) {
112 iref = (struct btrfs_extent_inline_ref *)ptr;
113 type = btrfs_extent_inline_ref_type(eb, iref);
114 offset = btrfs_extent_inline_ref_offset(eb, iref);
115 switch (type) {
116 case BTRFS_TREE_BLOCK_REF_KEY:
117 printk(KERN_INFO "\t\ttree block backref "
118 "root %llu\n", (unsigned long long)offset);
119 break;
120 case BTRFS_SHARED_BLOCK_REF_KEY:
121 printk(KERN_INFO "\t\tshared block backref "
122 "parent %llu\n", (unsigned long long)offset);
123 break;
124 case BTRFS_EXTENT_DATA_REF_KEY:
125 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
126 print_extent_data_ref(eb, dref);
127 break;
128 case BTRFS_SHARED_DATA_REF_KEY:
129 sref = (struct btrfs_shared_data_ref *)(iref + 1);
130 printk(KERN_INFO "\t\tshared data backref "
131 "parent %llu count %u\n",
132 (unsigned long long)offset,
133 btrfs_shared_data_ref_count(eb, sref));
134 break;
135 default:
136 BUG();
137 }
138 ptr += btrfs_extent_inline_ref_size(type);
139 }
140 WARN_ON(ptr > end);
141}
142
143#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
144static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
145{
146 struct btrfs_extent_ref_v0 *ref0;
147
148 ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
149 printk("\t\textent back ref root %llu gen %llu "
150 "owner %llu num_refs %lu\n",
151 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
152 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
153 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
154 (unsigned long)btrfs_ref_count_v0(eb, ref0));
155}
156#endif
157
158void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
159{
160 int i;
161 u32 type;
162 u32 nr = btrfs_header_nritems(l);
163 struct btrfs_item *item;
164 struct btrfs_root_item *ri;
165 struct btrfs_dir_item *di;
166 struct btrfs_inode_item *ii;
167 struct btrfs_block_group_item *bi;
168 struct btrfs_file_extent_item *fi;
169 struct btrfs_extent_data_ref *dref;
170 struct btrfs_shared_data_ref *sref;
171 struct btrfs_dev_extent *dev_extent;
172 struct btrfs_key key;
173 struct btrfs_key found_key;
174
175 printk(KERN_INFO "leaf %llu total ptrs %d free space %d\n",
176 (unsigned long long)btrfs_header_bytenr(l), nr,
177 btrfs_leaf_free_space(root, l));
178 for (i = 0 ; i < nr ; i++) {
179 item = btrfs_item_nr(l, i);
180 btrfs_item_key_to_cpu(l, &key, i);
181 type = btrfs_key_type(&key);
182 printk(KERN_INFO "\titem %d key (%llu %x %llu) itemoff %d "
183 "itemsize %d\n",
184 i,
185 (unsigned long long)key.objectid, type,
186 (unsigned long long)key.offset,
187 btrfs_item_offset(l, item), btrfs_item_size(l, item));
188 switch (type) {
189 case BTRFS_INODE_ITEM_KEY:
190 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
191 printk(KERN_INFO "\t\tinode generation %llu size %llu "
192 "mode %o\n",
193 (unsigned long long)
194 btrfs_inode_generation(l, ii),
195 (unsigned long long)btrfs_inode_size(l, ii),
196 btrfs_inode_mode(l, ii));
197 break;
198 case BTRFS_DIR_ITEM_KEY:
199 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
200 btrfs_dir_item_key_to_cpu(l, di, &found_key);
201 printk(KERN_INFO "\t\tdir oid %llu type %u\n",
202 (unsigned long long)found_key.objectid,
203 btrfs_dir_type(l, di));
204 break;
205 case BTRFS_ROOT_ITEM_KEY:
206 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
207 printk(KERN_INFO "\t\troot data bytenr %llu refs %u\n",
208 (unsigned long long)
209 btrfs_disk_root_bytenr(l, ri),
210 btrfs_disk_root_refs(l, ri));
211 break;
212 case BTRFS_EXTENT_ITEM_KEY:
213 print_extent_item(l, i);
214 break;
215 case BTRFS_TREE_BLOCK_REF_KEY:
216 printk(KERN_INFO "\t\ttree block backref\n");
217 break;
218 case BTRFS_SHARED_BLOCK_REF_KEY:
219 printk(KERN_INFO "\t\tshared block backref\n");
220 break;
221 case BTRFS_EXTENT_DATA_REF_KEY:
222 dref = btrfs_item_ptr(l, i,
223 struct btrfs_extent_data_ref);
224 print_extent_data_ref(l, dref);
225 break;
226 case BTRFS_SHARED_DATA_REF_KEY:
227 sref = btrfs_item_ptr(l, i,
228 struct btrfs_shared_data_ref);
229 printk(KERN_INFO "\t\tshared data backref count %u\n",
230 btrfs_shared_data_ref_count(l, sref));
231 break;
232 case BTRFS_EXTENT_DATA_KEY:
233 fi = btrfs_item_ptr(l, i,
234 struct btrfs_file_extent_item);
235 if (btrfs_file_extent_type(l, fi) ==
236 BTRFS_FILE_EXTENT_INLINE) {
237 printk(KERN_INFO "\t\tinline extent data "
238 "size %u\n",
239 btrfs_file_extent_inline_len(l, fi));
240 break;
241 }
242 printk(KERN_INFO "\t\textent data disk bytenr %llu "
243 "nr %llu\n",
244 (unsigned long long)
245 btrfs_file_extent_disk_bytenr(l, fi),
246 (unsigned long long)
247 btrfs_file_extent_disk_num_bytes(l, fi));
248 printk(KERN_INFO "\t\textent data offset %llu "
249 "nr %llu ram %llu\n",
250 (unsigned long long)
251 btrfs_file_extent_offset(l, fi),
252 (unsigned long long)
253 btrfs_file_extent_num_bytes(l, fi),
254 (unsigned long long)
255 btrfs_file_extent_ram_bytes(l, fi));
256 break;
257 case BTRFS_EXTENT_REF_V0_KEY:
258#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
259 print_extent_ref_v0(l, i);
260#else
261 BUG();
262#endif
263 case BTRFS_BLOCK_GROUP_ITEM_KEY:
264 bi = btrfs_item_ptr(l, i,
265 struct btrfs_block_group_item);
266 printk(KERN_INFO "\t\tblock group used %llu\n",
267 (unsigned long long)
268 btrfs_disk_block_group_used(l, bi));
269 break;
270 case BTRFS_CHUNK_ITEM_KEY:
271 print_chunk(l, btrfs_item_ptr(l, i,
272 struct btrfs_chunk));
273 break;
274 case BTRFS_DEV_ITEM_KEY:
275 print_dev_item(l, btrfs_item_ptr(l, i,
276 struct btrfs_dev_item));
277 break;
278 case BTRFS_DEV_EXTENT_KEY:
279 dev_extent = btrfs_item_ptr(l, i,
280 struct btrfs_dev_extent);
281 printk(KERN_INFO "\t\tdev extent chunk_tree %llu\n"
282 "\t\tchunk objectid %llu chunk offset %llu "
283 "length %llu\n",
284 (unsigned long long)
285 btrfs_dev_extent_chunk_tree(l, dev_extent),
286 (unsigned long long)
287 btrfs_dev_extent_chunk_objectid(l, dev_extent),
288 (unsigned long long)
289 btrfs_dev_extent_chunk_offset(l, dev_extent),
290 (unsigned long long)
291 btrfs_dev_extent_length(l, dev_extent));
292 };
293 }
294}
295
296void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c)
297{
298 int i; u32 nr;
299 struct btrfs_key key;
300 int level;
301
302 if (!c)
303 return;
304 nr = btrfs_header_nritems(c);
305 level = btrfs_header_level(c);
306 if (level == 0) {
307 btrfs_print_leaf(root, c);
308 return;
309 }
310 printk(KERN_INFO "node %llu level %d total ptrs %d free spc %u\n",
311 (unsigned long long)btrfs_header_bytenr(c),
312 level, nr,
313 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
314 for (i = 0; i < nr; i++) {
315 btrfs_node_key_to_cpu(c, &key, i);
316 printk(KERN_INFO "\tkey %d (%llu %u %llu) block %llu\n",
317 i,
318 (unsigned long long)key.objectid,
319 key.type,
320 (unsigned long long)key.offset,
321 (unsigned long long)btrfs_node_blockptr(c, i));
322 }
323 for (i = 0; i < nr; i++) {
324 struct extent_buffer *next = read_tree_block(root,
325 btrfs_node_blockptr(c, i),
326 btrfs_level_size(root, level - 1),
327 btrfs_node_ptr_generation(c, i));
328 if (btrfs_is_leaf(next) &&
329 level != 1)
330 BUG();
331 if (btrfs_header_level(next) !=
332 level - 1)
333 BUG();
334 btrfs_print_tree(root, next);
335 free_extent_buffer(next);
336 }
337}
338
