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/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <linux/module.h>
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.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_item *ii;
struct btrfs_block_group_item *bi;
struct btrfs_file_extent_item *fi;
u32 type;
printk("leaf %llu total ptrs %d free space %d\n",
(unsigned long long)btrfs_header_blocknr(&l->header), nr,
btrfs_leaf_free_space(root, l));
for (i = 0 ; i < nr ; i++) {
item = l->items + i;
type = btrfs_disk_key_type(&item->key);
printk("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n",
i,
(unsigned long long)btrfs_disk_key_objectid(&item->key),
btrfs_disk_key_flags(&item->key),
(unsigned long long)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);
printk("\t\tinode generation %llu size %llu mode %o\n",
(unsigned long long)btrfs_inode_generation(ii),
(unsigned long long)btrfs_inode_size(ii),
btrfs_inode_mode(ii));
break;
case BTRFS_DIR_ITEM_KEY:
di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
printk("\t\tdir oid %llu flags %u type %u\n",
(unsigned long long)btrfs_disk_key_objectid(
&di->location),
btrfs_dir_flags(di),
btrfs_dir_type(di));
printk("\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);
printk("\t\troot data blocknr %llu refs %u\n",
(unsigned long long)btrfs_root_blocknr(ri),
btrfs_root_refs(ri));
break;
case BTRFS_EXTENT_ITEM_KEY:
ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
printk("\t\textent data refs %u\n",
btrfs_extent_refs(ei));
break;
case BTRFS_EXTENT_DATA_KEY:
fi = btrfs_item_ptr(l, i,
struct btrfs_file_extent_item);
if (btrfs_file_extent_type(fi) ==
BTRFS_FILE_EXTENT_INLINE) {
printk("\t\tinline extent data size %u\n",
btrfs_file_extent_inline_len(l->items + i));
break;
}
printk("\t\textent data disk block %llu nr %llu\n",
(unsigned long long)btrfs_file_extent_disk_blocknr(fi),
(unsigned long long)btrfs_file_extent_disk_num_blocks(fi));
printk("\t\textent data offset %llu nr %llu\n",
(unsigned long long)btrfs_file_extent_offset(fi),
(unsigned long long)btrfs_file_extent_num_blocks(fi));
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY:
bi = btrfs_item_ptr(l, i,
struct btrfs_block_group_item);
printk("\t\tblock group used %llu\n",
(unsigned long long)btrfs_block_group_used(bi));
break;
case BTRFS_STRING_ITEM_KEY:
printk("\t\titem data %.*s\n", btrfs_item_size(item),
btrfs_leaf_data(l) + btrfs_item_offset(item));
break;
};
}
}
void btrfs_print_tree(struct btrfs_root *root, struct buffer_head *t)
{
int i;
u32 nr;
struct btrfs_node *c;
if (!t)
return;
c = btrfs_buffer_node(t);
nr = btrfs_header_nritems(&c->header);
if (btrfs_is_leaf(c)) {
btrfs_print_leaf(root, (struct btrfs_leaf *)c);
return;
}
printk("node %llu level %d total ptrs %d free spc %u\n",
(unsigned long long)btrfs_header_blocknr(&c->header),
btrfs_header_level(&c->header), nr,
(u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
for (i = 0; i < nr; i++) {
printk("\tkey %d (%llu %u %llu) block %llu\n",
i,
(unsigned long long)c->ptrs[i].key.objectid,
c->ptrs[i].key.flags,
(unsigned long long)c->ptrs[i].key.offset,
(unsigned long long)btrfs_node_blockptr(c, i));
}
for (i = 0; i < nr; i++) {
struct buffer_head *next_buf = read_tree_block(root,
btrfs_node_blockptr(c, i));
struct btrfs_node *next = btrfs_buffer_node(next_buf);
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);
}
}
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