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
|
#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_leaf *l)
{
int i;
u32 nr = btrfs_header_nritems(&l->header);
struct btrfs_item *item;
struct btrfs_extent_item *ei;
printf("leaf %Lu total ptrs %d free space %d\n",
btrfs_header_blocknr(&l->header), nr, btrfs_leaf_free_space(l));
fflush(stdout);
for (i = 0 ; i < nr ; i++) {
item = l->items + i;
printf("\titem %d key (%Lu %u %Lu) itemoff %d itemsize %d\n",
i,
btrfs_key_objectid(&item->key),
btrfs_key_flags(&item->key),
btrfs_key_offset(&item->key),
btrfs_item_offset(item),
btrfs_item_size(item));
fflush(stdout);
printf("\t\titem data %.*s\n", btrfs_item_size(item),
l->data + btrfs_item_offset(item));
ei = (struct btrfs_extent_item *)(l->data +
btrfs_item_offset(item));
printf("\t\textent data refs %u owner %Lu\n", ei->refs,
ei->owner);
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((struct btrfs_leaf *)c);
return;
}
printf("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
btrfs_header_level(&c->header), nr,
(u32)NODEPTRS_PER_BLOCK - nr);
fflush(stdout);
for (i = 0; i < nr; i++) {
printf("\tkey %d (%Lu %u %Lu) block %Lu\n",
i,
c->keys[i].objectid, c->keys[i].flags, c->keys[i].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);
}
}
|
