1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
#include <stdio.h>
#include <stdlib.h>
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#include "disk-io.h"
void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
{
int i;
u32 nr = btrfs_header_nritems(&l->header);
struct btrfs_item *item;
struct btrfs_extent_item *ei;
struct btrfs_root_item *ri;
struct btrfs_dir_item *di;
struct btrfs_inode_map_item *mi;
struct btrfs_inode_item *ii;
struct btrfs_file_extent_item *fi;
u32 type;
printf("leaf %Lu ptrs %d free space %d parent %Lu generation %Lu\n",
btrfs_header_blocknr(&l->header), nr,
btrfs_leaf_free_space(root, l),
btrfs_header_parentid(&l->header),
btrfs_header_generation(&l->header));
fflush(stdout);
for (i = 0 ; i < nr ; i++) {
item = l->items + i;
type = btrfs_disk_key_type(&item->key);
printf("\titem %d key (%Lu %u %Lu) itemoff %d itemsize %d\n",
i,
btrfs_disk_key_objectid(&item->key),
btrfs_disk_key_flags(&item->key),
btrfs_disk_key_offset(&item->key),
btrfs_item_offset(item),
btrfs_item_size(item));
switch (type) {
case BTRFS_INODE_ITEM_KEY:
ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
printf("\t\tinode generation %Lu size %Lu mode %o\n",
btrfs_inode_generation(ii),
btrfs_inode_size(ii),
btrfs_inode_mode(ii));
break;
case BTRFS_DIR_ITEM_KEY:
di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
printf("\t\tdir oid %Lu flags %u type %u\n",
btrfs_dir_objectid(di),
btrfs_dir_flags(di),
btrfs_dir_type(di));
printf("\t\tname %.*s\n",
btrfs_dir_name_len(di),(char *)(di + 1));
break;
case BTRFS_ROOT_ITEM_KEY:
ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
printf("\t\troot data blocknr %Lu refs %u\n",
btrfs_root_blocknr(ri), btrfs_root_refs(ri));
break;
case BTRFS_EXTENT_ITEM_KEY:
ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
printf("\t\textent data refs %u owner %Lu\n",
btrfs_extent_refs(ei), btrfs_extent_owner(ei));
break;
case BTRFS_INODE_MAP_ITEM_KEY:
mi = btrfs_item_ptr(l, i, struct btrfs_inode_map_item);
printf("\t\tinode map key %Lu %u %Lu\n",
btrfs_disk_key_objectid(&mi->key),
btrfs_disk_key_flags(&mi->key),
btrfs_disk_key_offset(&mi->key));
break;
case BTRFS_EXTENT_DATA_KEY:
fi = btrfs_item_ptr(l, i,
struct btrfs_file_extent_item);
printf("\t\textent data disk block %Lu nr %Lu\n",
btrfs_file_extent_disk_blocknr(fi),
btrfs_file_extent_disk_num_blocks(fi));
printf("\t\textent data offset %Lu nr %Lu\n",
btrfs_file_extent_offset(fi),
btrfs_file_extent_num_blocks(fi));
break;
case BTRFS_STRING_ITEM_KEY:
printf("\t\titem data %.*s\n", btrfs_item_size(item),
btrfs_leaf_data(l) + btrfs_item_offset(item));
break;
};
fflush(stdout);
}
}
void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t)
{
int i;
u32 nr;
struct btrfs_node *c;
if (!t)
return;
c = &t->node;
nr = btrfs_header_nritems(&c->header);
if (btrfs_is_leaf(c)) {
btrfs_print_leaf(root, (struct btrfs_leaf *)c);
return;
}
printf("node %Lu level %d ptrs %d free %u parent %Lu generation %Lu\n",
t->blocknr,
btrfs_header_level(&c->header), nr,
(u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
btrfs_header_parentid(&c->header),
btrfs_header_generation(&c->header));
fflush(stdout);
for (i = 0; i < nr; i++) {
printf("\tkey %d (%Lu %u %Lu) block %Lu\n",
i,
c->ptrs[i].key.objectid,
c->ptrs[i].key.flags,
c->ptrs[i].key.offset,
btrfs_node_blockptr(c, i));
fflush(stdout);
}
for (i = 0; i < nr; i++) {
struct btrfs_buffer *next_buf = read_tree_block(root,
btrfs_node_blockptr(c, i));
struct btrfs_node *next = &next_buf->node;
if (btrfs_is_leaf(next) &&
btrfs_header_level(&c->header) != 1)
BUG();
if (btrfs_header_level(&next->header) !=
btrfs_header_level(&c->header) - 1)
BUG();
btrfs_print_tree(root, next_buf);
btrfs_block_release(root, next_buf);
}
}
|
