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-rw-r--r--fs/btrfs/print-tree.c200
1 files changed, 200 insertions, 0 deletions
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
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index 000000000000..bd9ab3e9a7f2
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+++ b/fs/btrfs/print-tree.c
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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 printk("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
28 (unsigned long long)btrfs_chunk_length(eb, chunk),
29 (unsigned long long)btrfs_chunk_owner(eb, chunk),
30 (unsigned long long)btrfs_chunk_type(eb, chunk),
31 num_stripes);
32 for (i = 0 ; i < num_stripes ; i++) {
33 printk("\t\t\tstripe %d devid %llu offset %llu\n", i,
34 (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
35 (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
36 }
37}
38static void print_dev_item(struct extent_buffer *eb,
39 struct btrfs_dev_item *dev_item)
40{
41 printk("\t\tdev item devid %llu "
42 "total_bytes %llu bytes used %Lu\n",
43 (unsigned long long)btrfs_device_id(eb, dev_item),
44 (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
45 (unsigned long long)btrfs_device_bytes_used(eb, dev_item));
46}
47void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
48{
49 int i;
50 u32 nr = btrfs_header_nritems(l);
51 struct btrfs_item *item;
52 struct btrfs_extent_item *ei;
53 struct btrfs_root_item *ri;
54 struct btrfs_dir_item *di;
55 struct btrfs_inode_item *ii;
56 struct btrfs_block_group_item *bi;
57 struct btrfs_file_extent_item *fi;
58 struct btrfs_key key;
59 struct btrfs_key found_key;
60 struct btrfs_extent_ref *ref;
61 struct btrfs_dev_extent *dev_extent;
62 u32 type;
63
64 printk("leaf %llu total ptrs %d free space %d\n",
65 (unsigned long long)btrfs_header_bytenr(l), nr,
66 btrfs_leaf_free_space(root, l));
67 for (i = 0 ; i < nr ; i++) {
68 item = btrfs_item_nr(l, i);
69 btrfs_item_key_to_cpu(l, &key, i);
70 type = btrfs_key_type(&key);
71 printk("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n",
72 i,
73 (unsigned long long)key.objectid, type,
74 (unsigned long long)key.offset,
75 btrfs_item_offset(l, item), btrfs_item_size(l, item));
76 switch (type) {
77 case BTRFS_INODE_ITEM_KEY:
78 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
79 printk("\t\tinode generation %llu size %llu mode %o\n",
80 (unsigned long long)btrfs_inode_generation(l, ii),
81 (unsigned long long)btrfs_inode_size(l, ii),
82 btrfs_inode_mode(l, ii));
83 break;
84 case BTRFS_DIR_ITEM_KEY:
85 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
86 btrfs_dir_item_key_to_cpu(l, di, &found_key);
87 printk("\t\tdir oid %llu type %u\n",
88 (unsigned long long)found_key.objectid,
89 btrfs_dir_type(l, di));
90 break;
91 case BTRFS_ROOT_ITEM_KEY:
92 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
93 printk("\t\troot data bytenr %llu refs %u\n",
94 (unsigned long long)btrfs_disk_root_bytenr(l, ri),
95 btrfs_disk_root_refs(l, ri));
96 break;
97 case BTRFS_EXTENT_ITEM_KEY:
98 ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
99 printk("\t\textent data refs %u\n",
100 btrfs_extent_refs(l, ei));
101 break;
102 case BTRFS_EXTENT_REF_KEY:
103 ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref);
104 printk("\t\textent back ref root %llu gen %llu "
105 "owner %llu num_refs %lu\n",
106 (unsigned long long)btrfs_ref_root(l, ref),
107 (unsigned long long)btrfs_ref_generation(l, ref),
108 (unsigned long long)btrfs_ref_objectid(l, ref),
109 (unsigned long)btrfs_ref_num_refs(l, ref));
110 break;
111
112 case BTRFS_EXTENT_DATA_KEY:
113 fi = btrfs_item_ptr(l, i,
114 struct btrfs_file_extent_item);
115 if (btrfs_file_extent_type(l, fi) ==
116 BTRFS_FILE_EXTENT_INLINE) {
117 printk("\t\tinline extent data size %u\n",
118 btrfs_file_extent_inline_len(l, item));
119 break;
120 }
121 printk("\t\textent data disk bytenr %llu nr %llu\n",
122 (unsigned long long)btrfs_file_extent_disk_bytenr(l, fi),
123 (unsigned long long)btrfs_file_extent_disk_num_bytes(l, fi));
124 printk("\t\textent data offset %llu nr %llu\n",
125 (unsigned long long)btrfs_file_extent_offset(l, fi),
126 (unsigned long long)btrfs_file_extent_num_bytes(l, fi));
127 break;
128 case BTRFS_BLOCK_GROUP_ITEM_KEY:
129 bi = btrfs_item_ptr(l, i,
130 struct btrfs_block_group_item);
131 printk("\t\tblock group used %llu\n",
132 (unsigned long long)btrfs_disk_block_group_used(l, bi));
133 break;
134 case BTRFS_CHUNK_ITEM_KEY:
135 print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
136 break;
137 case BTRFS_DEV_ITEM_KEY:
138 print_dev_item(l, btrfs_item_ptr(l, i,
139 struct btrfs_dev_item));
140 break;
141 case BTRFS_DEV_EXTENT_KEY:
142 dev_extent = btrfs_item_ptr(l, i,
143 struct btrfs_dev_extent);
144 printk("\t\tdev extent chunk_tree %llu\n"
145 "\t\tchunk objectid %llu chunk offset %llu "
146 "length %llu\n",
147 (unsigned long long)
148 btrfs_dev_extent_chunk_tree(l, dev_extent),
149 (unsigned long long)
150 btrfs_dev_extent_chunk_objectid(l, dev_extent),
151 (unsigned long long)
152 btrfs_dev_extent_chunk_offset(l, dev_extent),
153 (unsigned long long)
154 btrfs_dev_extent_length(l, dev_extent));
155 };
156 }
157}
158
159void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c)
160{
161 int i; u32 nr;
162 struct btrfs_key key;
163 int level;
164
165 if (!c)
166 return;
167 nr = btrfs_header_nritems(c);
168 level = btrfs_header_level(c);
169 if (level == 0) {
170 btrfs_print_leaf(root, c);
171 return;
172 }
173 printk("node %llu level %d total ptrs %d free spc %u\n",
174 (unsigned long long)btrfs_header_bytenr(c),
175 btrfs_header_level(c), nr,
176 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
177 for (i = 0; i < nr; i++) {
178 btrfs_node_key_to_cpu(c, &key, i);
179 printk("\tkey %d (%llu %u %llu) block %llu\n",
180 i,
181 (unsigned long long)key.objectid,
182 key.type,
183 (unsigned long long)key.offset,
184 (unsigned long long)btrfs_node_blockptr(c, i));
185 }
186 for (i = 0; i < nr; i++) {
187 struct extent_buffer *next = read_tree_block(root,
188 btrfs_node_blockptr(c, i),
189 btrfs_level_size(root, level - 1),
190 btrfs_node_ptr_generation(c, i));
191 if (btrfs_is_leaf(next) &&
192 btrfs_header_level(c) != 1)
193 BUG();
194 if (btrfs_header_level(next) !=
195 btrfs_header_level(c) - 1)
196 BUG();
197 btrfs_print_tree(root, next);
198 free_extent_buffer(next);
199 }
200}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 09:00:21 -0500