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 "kerncompat.h"
22 #include "radix-tree.h"
26 static int print_dir_item(struct extent_buffer
*eb
, struct btrfs_item
*item
,
27 struct btrfs_dir_item
*di
)
34 char namebuf
[BTRFS_NAME_LEN
];
35 struct btrfs_disk_key location
;
37 total
= btrfs_item_size(eb
, item
);
39 btrfs_dir_item_key(eb
, di
, &location
);
40 printf("\t\tdir index %llu type %u\n",
41 (unsigned long long)btrfs_disk_key_objectid(&location
),
42 btrfs_dir_type(eb
, di
));
43 name_len
= btrfs_dir_name_len(eb
, di
);
44 data_len
= btrfs_dir_data_len(eb
, di
);
45 len
= (name_len
<= sizeof(namebuf
))? name_len
: sizeof(namebuf
);
46 read_extent_buffer(eb
, namebuf
, (unsigned long)(di
+ 1), len
);
47 printf("\t\tnamelen %u datalen %u name: %.*s\n",
48 name_len
, data_len
, len
, namebuf
);
49 len
= sizeof(*di
) + name_len
+ data_len
;
50 di
= (struct btrfs_dir_item
*)((char *)di
+ len
);
56 static int print_inode_ref_item(struct extent_buffer
*eb
, struct btrfs_item
*item
,
57 struct btrfs_inode_ref
*ref
)
63 char namebuf
[BTRFS_NAME_LEN
];
64 total
= btrfs_item_size(eb
, item
);
66 name_len
= btrfs_inode_ref_name_len(eb
, ref
);
67 len
= (name_len
<= sizeof(namebuf
))? name_len
: sizeof(namebuf
);
68 read_extent_buffer(eb
, namebuf
, (unsigned long)(ref
+ 1), len
);
69 printf("\t\tinode ref namelen %u name: %.*s\n",
70 name_len
, len
, namebuf
);
71 len
= sizeof(*ref
) + name_len
;
72 ref
= (struct btrfs_inode_ref
*)((char *)ref
+ len
);
78 void btrfs_print_leaf(struct btrfs_root
*root
, struct extent_buffer
*l
)
82 struct btrfs_item
*item
;
83 struct btrfs_extent_item
*ei
;
84 struct btrfs_root_item
*ri
;
85 struct btrfs_dir_item
*di
;
86 struct btrfs_inode_item
*ii
;
87 struct btrfs_file_extent_item
*fi
;
88 struct btrfs_csum_item
*ci
;
89 struct btrfs_block_group_item
*bi
;
90 struct btrfs_extent_ref
*ref
;
91 struct btrfs_inode_ref
*iref
;
92 struct btrfs_disk_key disk_key
;
93 struct btrfs_root_item root_item
;
94 struct btrfs_block_group_item bg_item
;
95 u32 nr
= btrfs_header_nritems(l
);
98 printf("leaf %llu ptrs %d free space %d generation %llu owner %llu\n",
99 (unsigned long long)btrfs_header_bytenr(l
), nr
,
100 btrfs_leaf_free_space(root
, l
),
101 (unsigned long long)btrfs_header_generation(l
),
102 (unsigned long long)btrfs_header_owner(l
));
104 for (i
= 0 ; i
< nr
; i
++) {
105 item
= btrfs_item_nr(l
, i
);
106 btrfs_item_key(l
, &disk_key
, i
);
107 type
= btrfs_disk_key_type(&disk_key
);
108 printf("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n",
110 (unsigned long long)btrfs_disk_key_objectid(&disk_key
),
111 btrfs_disk_key_type(&disk_key
),
112 (unsigned long long)btrfs_disk_key_offset(&disk_key
),
113 btrfs_item_offset(l
, item
),
114 btrfs_item_size(l
, item
));
116 case BTRFS_INODE_ITEM_KEY
:
117 ii
= btrfs_item_ptr(l
, i
, struct btrfs_inode_item
);
118 printf("\t\tinode generation %llu size %llu block group %llu mode %o links %u\n",
119 (unsigned long long)btrfs_inode_generation(l
, ii
),
120 (unsigned long long)btrfs_inode_size(l
, ii
),
121 (unsigned long long)btrfs_inode_block_group(l
,ii
),
122 btrfs_inode_mode(l
, ii
),
123 btrfs_inode_nlink(l
, ii
));
125 case BTRFS_INODE_REF_KEY
:
126 iref
= btrfs_item_ptr(l
, i
, struct btrfs_inode_ref
);
127 print_inode_ref_item(l
, item
, iref
);
129 case BTRFS_DIR_ITEM_KEY
:
130 case BTRFS_DIR_INDEX_KEY
:
131 case BTRFS_XATTR_ITEM_KEY
:
132 di
= btrfs_item_ptr(l
, i
, struct btrfs_dir_item
);
133 print_dir_item(l
, item
, di
);
135 case BTRFS_ROOT_ITEM_KEY
:
136 ri
= btrfs_item_ptr(l
, i
, struct btrfs_root_item
);
137 read_extent_buffer(l
, &root_item
, (unsigned long)ri
, sizeof(root_item
));
138 printf("\t\troot data bytenr %llu level %d dirid %llu refs %u\n",
139 (unsigned long long)btrfs_root_bytenr(&root_item
),
140 btrfs_root_level(&root_item
),
141 (unsigned long long)btrfs_root_dirid(&root_item
),
142 btrfs_root_refs(&root_item
));
143 if (1 || btrfs_root_refs(&root_item
) == 0) {
144 struct btrfs_key drop_key
;
145 btrfs_disk_key_to_cpu(&drop_key
,
146 &root_item
.drop_progress
);
147 printf("\t\tdrop key %Lu %x %Lu level %d\n",
148 (unsigned long long)drop_key
.objectid
,
150 (unsigned long long)drop_key
.offset
,
151 root_item
.drop_level
);
154 case BTRFS_EXTENT_ITEM_KEY
:
155 ei
= btrfs_item_ptr(l
, i
, struct btrfs_extent_item
);
156 printf("\t\textent data refs %u\n",
157 btrfs_extent_refs(l
, ei
));
159 case BTRFS_EXTENT_REF_KEY
:
160 ref
= btrfs_item_ptr(l
, i
, struct btrfs_extent_ref
);
161 printf("\t\textent back ref root %llu gen %llu "
162 "owner %llu offset %llu\n",
163 (unsigned long long)btrfs_ref_root(l
, ref
),
164 (unsigned long long)btrfs_ref_generation(l
, ref
),
165 (unsigned long long)btrfs_ref_objectid(l
, ref
),
166 (unsigned long long)btrfs_ref_offset(l
, ref
));
168 case BTRFS_CSUM_ITEM_KEY
:
169 ci
= btrfs_item_ptr(l
, i
, struct btrfs_csum_item
);
170 printf("\t\tcsum item\n");
172 case BTRFS_EXTENT_DATA_KEY
:
173 fi
= btrfs_item_ptr(l
, i
,
174 struct btrfs_file_extent_item
);
175 if (btrfs_file_extent_type(l
, fi
) ==
176 BTRFS_FILE_EXTENT_INLINE
) {
177 printf("\t\tinline extent data size %u\n",
178 btrfs_file_extent_inline_len(l
, item
));
181 printf("\t\textent data disk byte %llu nr %llu\n",
182 (unsigned long long)btrfs_file_extent_disk_bytenr(l
, fi
),
183 (unsigned long long)btrfs_file_extent_disk_num_bytes(l
, fi
));
184 printf("\t\textent data offset %llu nr %llu\n",
185 (unsigned long long)btrfs_file_extent_offset(l
, fi
),
186 (unsigned long long)btrfs_file_extent_num_bytes(l
, fi
));
188 case BTRFS_BLOCK_GROUP_ITEM_KEY
:
189 bi
= btrfs_item_ptr(l
, i
,
190 struct btrfs_block_group_item
);
191 read_extent_buffer(l
, &bg_item
, (unsigned long)bi
,
193 printf("\t\tblock group used %llu flags %x\n",
194 (unsigned long long)btrfs_block_group_used(&bg_item
),
197 case BTRFS_STRING_ITEM_KEY
:
198 /* dirty, but it's simple */
199 str
= l
->data
+ btrfs_item_ptr_offset(l
, i
);
200 printf("\t\titem data %.*s\n", btrfs_item_size(l
, item
), str
);
206 void btrfs_print_tree(struct btrfs_root
*root
, struct extent_buffer
*eb
)
211 struct btrfs_key key
;
215 nr
= btrfs_header_nritems(eb
);
216 if (btrfs_is_leaf(eb
)) {
217 btrfs_print_leaf(root
, eb
);
220 printf("node %llu level %d ptrs %d free %u generation %llu owner %llu\n",
221 (unsigned long long)eb
->start
,
222 btrfs_header_level(eb
), nr
,
223 (u32
)BTRFS_NODEPTRS_PER_BLOCK(root
) - nr
,
224 (unsigned long long)btrfs_header_generation(eb
),
225 (unsigned long long)btrfs_header_owner(eb
));
227 size
= btrfs_level_size(root
, btrfs_header_level(eb
) - 1);
228 for (i
= 0; i
< nr
; i
++) {
229 u64 blocknr
= btrfs_node_blockptr(eb
, i
);
230 btrfs_node_key_to_cpu(eb
, &key
, i
);
231 printf("\tkey %d (%llu %x %llu) block %llu (%llu) gen %llu\n",
233 (unsigned long long)key
.objectid
,
235 (unsigned long long)key
.offset
,
236 (unsigned long long)blocknr
,
237 (unsigned long long)blocknr
/ size
,
238 (unsigned long long)btrfs_node_ptr_generation(eb
, i
));
241 for (i
= 0; i
< nr
; i
++) {
242 struct extent_buffer
*next
= read_tree_block(root
,
243 btrfs_node_blockptr(eb
, i
),
245 if (btrfs_is_leaf(next
) &&
246 btrfs_header_level(eb
) != 1)
248 if (btrfs_header_level(next
) !=
249 btrfs_header_level(eb
) - 1)
251 btrfs_print_tree(root
, next
);
252 free_extent_buffer(next
);