mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-24 15:12:47 +00:00
95d3f20b51
This commit introduces a new kind of back reference for btrfs metadata. Once a filesystem has been mounted with this commit, IT WILL NO LONGER BE MOUNTABLE BY OLDER KERNELS. The new back ref provides information about pointer's key, level and in which tree the pointer lives. This information allow us to find the pointer by searching the tree. The shortcoming of the new back ref is that it only works for pointers in tree blocks referenced by their owner trees. This is mostly a problem for snapshots, where resolving one of these fuzzy back references would be O(number_of_snapshots) and quite slow. The solution used here is to use the fuzzy back references in the common case where a given tree block is only referenced by one root, and use the full back references when multiple roots have a reference
668 lines
20 KiB
C
668 lines
20 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <uuid/uuid.h>
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#include "kerncompat.h"
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#include "radix-tree.h"
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#include "ctree.h"
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#include "disk-io.h"
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#include "print-tree.h"
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static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
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struct btrfs_dir_item *di)
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{
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u32 total;
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u32 cur = 0;
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u32 len;
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u32 name_len;
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u32 data_len;
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char namebuf[BTRFS_NAME_LEN];
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struct btrfs_disk_key location;
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total = btrfs_item_size(eb, item);
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while(cur < total) {
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btrfs_dir_item_key(eb, di, &location);
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printf("\t\tlocation ");
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btrfs_print_key(&location);
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printf(" type %u\n", btrfs_dir_type(eb, di));
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name_len = btrfs_dir_name_len(eb, di);
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data_len = btrfs_dir_data_len(eb, di);
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len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
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read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
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printf("\t\tnamelen %u datalen %u name: %.*s\n",
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name_len, data_len, len, namebuf);
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len = sizeof(*di) + name_len + data_len;
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di = (struct btrfs_dir_item *)((char *)di + len);
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cur += len;
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}
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return 0;
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}
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static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
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struct btrfs_inode_ref *ref)
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{
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u32 total;
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u32 cur = 0;
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u32 len;
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u32 name_len;
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u64 index;
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char namebuf[BTRFS_NAME_LEN];
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total = btrfs_item_size(eb, item);
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while(cur < total) {
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name_len = btrfs_inode_ref_name_len(eb, ref);
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index = btrfs_inode_ref_index(eb, ref);
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len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
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read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
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printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
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(unsigned long long)index, name_len, len, namebuf);
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len = sizeof(*ref) + name_len;
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ref = (struct btrfs_inode_ref *)((char *)ref + len);
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cur += len;
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}
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return 0;
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}
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static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
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{
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int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
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int i;
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printf("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
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(unsigned long long)btrfs_chunk_length(eb, chunk),
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(unsigned long long)btrfs_chunk_owner(eb, chunk),
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(unsigned long long)btrfs_chunk_type(eb, chunk),
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num_stripes);
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for (i = 0 ; i < num_stripes ; i++) {
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printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
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(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
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(unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
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}
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}
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static void print_dev_item(struct extent_buffer *eb,
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struct btrfs_dev_item *dev_item)
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{
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printf("\t\tdev item devid %llu "
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"total_bytes %llu bytes used %Lu\n",
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(unsigned long long)btrfs_device_id(eb, dev_item),
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(unsigned long long)btrfs_device_total_bytes(eb, dev_item),
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(unsigned long long)btrfs_device_bytes_used(eb, dev_item));
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}
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static void print_uuids(struct extent_buffer *eb)
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{
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char fs_uuid[37];
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char chunk_uuid[37];
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u8 disk_uuid[BTRFS_UUID_SIZE];
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read_extent_buffer(eb, disk_uuid, (unsigned long)btrfs_header_fsid(eb),
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BTRFS_FSID_SIZE);
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fs_uuid[36] = '\0';
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uuid_unparse(disk_uuid, fs_uuid);
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read_extent_buffer(eb, disk_uuid,
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(unsigned long)btrfs_header_chunk_tree_uuid(eb),
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BTRFS_UUID_SIZE);
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chunk_uuid[36] = '\0';
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uuid_unparse(disk_uuid, chunk_uuid);
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printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
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}
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static void print_file_extent_item(struct extent_buffer *eb,
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struct btrfs_item *item,
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struct btrfs_file_extent_item *fi)
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{
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int extent_type = btrfs_file_extent_type(eb, fi);
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if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
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printf("\t\tinline extent data size %u "
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"ram %u compress %d\n",
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btrfs_file_extent_inline_item_len(eb, item),
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btrfs_file_extent_inline_len(eb, fi),
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btrfs_file_extent_compression(eb, fi));
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return;
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}
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if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
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printf("\t\tprealloc data disk byte %llu nr %llu\n",
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(unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
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(unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
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printf("\t\tprealloc data offset %llu nr %llu\n",
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(unsigned long long)btrfs_file_extent_offset(eb, fi),
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(unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
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return;
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}
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printf("\t\textent data disk byte %llu nr %llu\n",
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(unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
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(unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
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printf("\t\textent data offset %llu nr %llu ram %llu\n",
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(unsigned long long)btrfs_file_extent_offset(eb, fi),
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(unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
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(unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
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printf("\t\textent compression %d\n",
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btrfs_file_extent_compression(eb, fi));
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}
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static void print_extent_item(struct extent_buffer *eb, int slot)
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{
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struct btrfs_extent_item *ei;
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struct btrfs_extent_inline_ref *iref;
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struct btrfs_extent_data_ref *dref;
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struct btrfs_shared_data_ref *sref;
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struct btrfs_disk_key key;
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unsigned long end;
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unsigned long ptr;
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int type;
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u32 item_size = btrfs_item_size_nr(eb, slot);
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u64 flags;
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u64 offset;
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if (item_size < sizeof(*ei)) {
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#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
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struct btrfs_extent_item_v0 *ei0;
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BUG_ON(item_size != sizeof(*ei0));
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ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
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printf("\t\textent refs %u\n",
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btrfs_extent_refs_v0(eb, ei0));
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return;
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#else
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BUG();
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#endif
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}
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ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
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flags = btrfs_extent_flags(eb, ei);
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printf("\t\textent refs %llu gen %llu flags %llu\n",
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(unsigned long long)btrfs_extent_refs(eb, ei),
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(unsigned long long)btrfs_extent_generation(eb, ei),
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(unsigned long long)flags);
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if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
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struct btrfs_tree_block_info *info;
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info = (struct btrfs_tree_block_info *)(ei + 1);
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btrfs_tree_block_key(eb, info, &key);
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printf("\t\ttree block key (%llu %x %llu) level %d\n",
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(unsigned long long)btrfs_disk_key_objectid(&key),
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key.type,
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(unsigned long long)btrfs_disk_key_offset(&key),
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btrfs_tree_block_level(eb, info));
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iref = (struct btrfs_extent_inline_ref *)(info + 1);
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} else {
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iref = (struct btrfs_extent_inline_ref *)(ei + 1);
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}
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ptr = (unsigned long)iref;
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end = (unsigned long)ei + item_size;
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while (ptr < end) {
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iref = (struct btrfs_extent_inline_ref *)ptr;
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type = btrfs_extent_inline_ref_type(eb, iref);
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offset = btrfs_extent_inline_ref_offset(eb, iref);
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switch (type) {
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case BTRFS_TREE_BLOCK_REF_KEY:
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printf("\t\ttree block backref root %llu\n",
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(unsigned long long)offset);
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break;
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case BTRFS_SHARED_BLOCK_REF_KEY:
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printf("\t\tshared block backref parent %llu\n",
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(unsigned long long)offset);
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break;
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case BTRFS_EXTENT_DATA_REF_KEY:
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dref = (struct btrfs_extent_data_ref *)(&iref->offset);
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printf("\t\textent data backref root %llu "
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"objectid %llu offset %llu count %u\n",
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(unsigned long long)btrfs_extent_data_ref_root(eb, dref),
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(unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
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(unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
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btrfs_extent_data_ref_count(eb, dref));
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break;
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case BTRFS_SHARED_DATA_REF_KEY:
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sref = (struct btrfs_shared_data_ref *)(iref + 1);
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printf("\t\tshared data backref parent %llu count %u\n",
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(unsigned long long)offset,
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btrfs_shared_data_ref_count(eb, sref));
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break;
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default:
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BUG();
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}
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ptr += btrfs_extent_inline_ref_size(type);
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}
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WARN_ON(ptr > end);
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}
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#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
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static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
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{
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struct btrfs_extent_ref_v0 *ref0;
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ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
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printf("\t\textent back ref root %llu gen %llu "
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"owner %llu num_refs %lu\n",
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(unsigned long long)btrfs_ref_root_v0(eb, ref0),
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(unsigned long long)btrfs_ref_generation_v0(eb, ref0),
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(unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
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(unsigned long)btrfs_ref_count_v0(eb, ref0));
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}
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#endif
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static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
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{
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struct btrfs_root_ref *ref;
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char namebuf[BTRFS_NAME_LEN];
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int namelen;
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ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
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namelen = btrfs_root_ref_name_len(leaf, ref);
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read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
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printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
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(unsigned long long)btrfs_root_ref_dirid(leaf, ref),
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(unsigned long long)btrfs_root_ref_sequence(leaf, ref),
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namelen, namebuf);
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}
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static void print_key_type(u8 type)
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{
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switch (type) {
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case BTRFS_INODE_ITEM_KEY:
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printf("INODE_ITEM");
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break;
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case BTRFS_INODE_REF_KEY:
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printf("INODE_REF");
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break;
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case BTRFS_DIR_ITEM_KEY:
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printf("DIR_ITEM");
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break;
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case BTRFS_DIR_INDEX_KEY:
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printf("DIR_INDEX");
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break;
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case BTRFS_DIR_LOG_ITEM_KEY:
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printf("DIR_LOG_ITEM");
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break;
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case BTRFS_DIR_LOG_INDEX_KEY:
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printf("DIR_LOG_INDEX");
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break;
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case BTRFS_XATTR_ITEM_KEY:
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printf("XATTR_ITEM");
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break;
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case BTRFS_ORPHAN_ITEM_KEY:
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printf("ORPHAN_ITEM");
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break;
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case BTRFS_ROOT_ITEM_KEY:
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printf("ROOT_ITEM");
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break;
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case BTRFS_ROOT_REF_KEY:
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printf("ROOT_REF");
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break;
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case BTRFS_ROOT_BACKREF_KEY:
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printf("ROOT_BACKREF");
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break;
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case BTRFS_EXTENT_ITEM_KEY:
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printf("EXTENT_ITEM");
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break;
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case BTRFS_TREE_BLOCK_REF_KEY:
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printf("TREE_BLOCK_REF");
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break;
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case BTRFS_SHARED_BLOCK_REF_KEY:
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printf("SHARED_BLOCK_REF");
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break;
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case BTRFS_EXTENT_DATA_REF_KEY:
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printf("EXTENT_DATA_REF");
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break;
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case BTRFS_SHARED_DATA_REF_KEY:
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printf("SHARED_DATA_REF");
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break;
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case BTRFS_EXTENT_REF_V0_KEY:
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printf("EXTENT_REF_V0");
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break;
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case BTRFS_CSUM_ITEM_KEY:
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printf("CSUM_ITEM");
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break;
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case BTRFS_EXTENT_CSUM_KEY:
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printf("EXTENT_CSUM");
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break;
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case BTRFS_EXTENT_DATA_KEY:
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printf("EXTENT_DATA");
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break;
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case BTRFS_BLOCK_GROUP_ITEM_KEY:
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printf("BLOCK_GROUP_ITEM");
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break;
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case BTRFS_CHUNK_ITEM_KEY:
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printf("CHUNK_ITEM");
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break;
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case BTRFS_DEV_ITEM_KEY:
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printf("DEV_ITEM");
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break;
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case BTRFS_DEV_EXTENT_KEY:
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printf("DEV_EXTENT");
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break;
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case BTRFS_STRING_ITEM_KEY:
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printf("STRING_ITEM");
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break;
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default:
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printf("UNKNOWN");
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};
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}
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static void print_objectid(unsigned long long objectid, u8 type)
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{
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if (type == BTRFS_DEV_EXTENT_KEY) {
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printf("%llu", objectid); /* device id */
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return;
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}
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switch (objectid) {
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case BTRFS_ROOT_TREE_OBJECTID:
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if (type == BTRFS_DEV_ITEM_KEY)
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printf("DEV_ITEMS");
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else
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printf("ROOT_TREE");
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break;
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case BTRFS_EXTENT_TREE_OBJECTID:
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printf("EXTENT_TREE");
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break;
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case BTRFS_CHUNK_TREE_OBJECTID:
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printf("CHUNK_TREE");
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break;
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case BTRFS_DEV_TREE_OBJECTID:
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printf("DEV_TREE");
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break;
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case BTRFS_FS_TREE_OBJECTID:
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printf("FS_TREE");
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break;
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case BTRFS_ROOT_TREE_DIR_OBJECTID:
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printf("ROOT_TREE_DIR");
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break;
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case BTRFS_CSUM_TREE_OBJECTID:
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printf("CSUM_TREE");
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break;
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case BTRFS_ORPHAN_OBJECTID:
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printf("ORPHAN");
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break;
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case BTRFS_TREE_LOG_OBJECTID:
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printf("TREE_LOG");
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break;
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case BTRFS_TREE_LOG_FIXUP_OBJECTID:
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printf("LOG_FIXUP");
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break;
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case BTRFS_TREE_RELOC_OBJECTID:
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printf("TREE_RELOC");
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break;
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case BTRFS_DATA_RELOC_TREE_OBJECTID:
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printf("DATA_RELOC_TREE");
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break;
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case BTRFS_EXTENT_CSUM_OBJECTID:
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printf("EXTENT_CSUM");
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break;
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case BTRFS_MULTIPLE_OBJECTIDS:
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printf("MULTIPLE");
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break;
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case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
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printf("FIRST_CHUNK_TREE");
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break;
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default:
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printf("%llu", objectid);
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}
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}
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void btrfs_print_key(struct btrfs_disk_key *disk_key)
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{
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u8 type;
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printf("key (");
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type = btrfs_disk_key_type(disk_key);
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print_objectid((unsigned long long)btrfs_disk_key_objectid(disk_key),
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type);
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printf(" ");
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print_key_type(type);
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printf(" %llu)", (unsigned long long)btrfs_disk_key_offset(disk_key));
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}
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void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
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{
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int i;
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char *str;
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struct btrfs_item *item;
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struct btrfs_root_item *ri;
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struct btrfs_dir_item *di;
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struct btrfs_inode_item *ii;
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struct btrfs_file_extent_item *fi;
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struct btrfs_csum_item *ci;
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struct btrfs_block_group_item *bi;
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struct btrfs_extent_data_ref *dref;
|
|
struct btrfs_shared_data_ref *sref;
|
|
struct btrfs_inode_ref *iref;
|
|
struct btrfs_dev_extent *dev_extent;
|
|
struct btrfs_disk_key disk_key;
|
|
struct btrfs_root_item root_item;
|
|
struct btrfs_block_group_item bg_item;
|
|
struct btrfs_dir_log_item *dlog;
|
|
u32 nr = btrfs_header_nritems(l);
|
|
u32 type;
|
|
|
|
printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
|
|
(unsigned long long)btrfs_header_bytenr(l), nr,
|
|
btrfs_leaf_free_space(root, l),
|
|
(unsigned long long)btrfs_header_generation(l),
|
|
(unsigned long long)btrfs_header_owner(l));
|
|
print_uuids(l);
|
|
fflush(stdout);
|
|
for (i = 0 ; i < nr ; i++) {
|
|
item = btrfs_item_nr(l, i);
|
|
btrfs_item_key(l, &disk_key, i);
|
|
type = btrfs_disk_key_type(&disk_key);
|
|
printf("\titem %d ", i);
|
|
btrfs_print_key(&disk_key);
|
|
printf(" itemoff %d itemsize %d\n",
|
|
btrfs_item_offset(l, item),
|
|
btrfs_item_size(l, item));
|
|
switch (type) {
|
|
case BTRFS_INODE_ITEM_KEY:
|
|
ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
|
|
printf("\t\tinode generation %llu size %llu block group %llu mode %o links %u\n",
|
|
(unsigned long long)btrfs_inode_generation(l, ii),
|
|
(unsigned long long)btrfs_inode_size(l, ii),
|
|
(unsigned long long)btrfs_inode_block_group(l,ii),
|
|
btrfs_inode_mode(l, ii),
|
|
btrfs_inode_nlink(l, ii));
|
|
break;
|
|
case BTRFS_INODE_REF_KEY:
|
|
iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
|
|
print_inode_ref_item(l, item, iref);
|
|
break;
|
|
case BTRFS_DIR_ITEM_KEY:
|
|
case BTRFS_DIR_INDEX_KEY:
|
|
case BTRFS_XATTR_ITEM_KEY:
|
|
di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
|
|
print_dir_item(l, item, di);
|
|
break;
|
|
case BTRFS_DIR_LOG_INDEX_KEY:
|
|
case BTRFS_DIR_LOG_ITEM_KEY:
|
|
dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
|
|
printf("\t\tdir log end %Lu\n",
|
|
btrfs_dir_log_end(l, dlog));
|
|
break;
|
|
case BTRFS_ORPHAN_ITEM_KEY:
|
|
printf("\t\torphan item\n");
|
|
break;
|
|
case BTRFS_ROOT_ITEM_KEY:
|
|
ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
|
|
read_extent_buffer(l, &root_item, (unsigned long)ri, sizeof(root_item));
|
|
printf("\t\troot data bytenr %llu level %d dirid %llu refs %u\n",
|
|
(unsigned long long)btrfs_root_bytenr(&root_item),
|
|
btrfs_root_level(&root_item),
|
|
(unsigned long long)btrfs_root_dirid(&root_item),
|
|
btrfs_root_refs(&root_item));
|
|
if (btrfs_root_refs(&root_item) == 0) {
|
|
struct btrfs_key drop_key;
|
|
btrfs_disk_key_to_cpu(&drop_key,
|
|
&root_item.drop_progress);
|
|
printf("\t\tdrop ");
|
|
btrfs_print_key(&root_item.drop_progress);
|
|
printf(" level %d\n", root_item.drop_level);
|
|
}
|
|
break;
|
|
case BTRFS_ROOT_REF_KEY:
|
|
print_root_ref(l, i, "ref");
|
|
break;
|
|
case BTRFS_ROOT_BACKREF_KEY:
|
|
print_root_ref(l, i, "backref");
|
|
break;
|
|
case BTRFS_EXTENT_ITEM_KEY:
|
|
print_extent_item(l, i);
|
|
break;
|
|
case BTRFS_TREE_BLOCK_REF_KEY:
|
|
printf("\t\ttree block backref\n");
|
|
break;
|
|
case BTRFS_SHARED_BLOCK_REF_KEY:
|
|
printf("\t\tshared block backref\n");
|
|
break;
|
|
case BTRFS_EXTENT_DATA_REF_KEY:
|
|
dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
|
|
printf("\t\textent data backref root %llu "
|
|
"objectid %llu offset %llu count %u\n",
|
|
(unsigned long long)btrfs_extent_data_ref_root(l, dref),
|
|
(unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
|
|
(unsigned long long)btrfs_extent_data_ref_offset(l, dref),
|
|
btrfs_extent_data_ref_count(l, dref));
|
|
break;
|
|
case BTRFS_SHARED_DATA_REF_KEY:
|
|
sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
|
|
printf("\t\tshared data backref count %u\n",
|
|
btrfs_shared_data_ref_count(l, sref));
|
|
break;
|
|
case BTRFS_EXTENT_REF_V0_KEY:
|
|
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
|
|
print_extent_ref_v0(l, i);
|
|
#else
|
|
BUG();
|
|
#endif
|
|
break;
|
|
case BTRFS_CSUM_ITEM_KEY:
|
|
ci = btrfs_item_ptr(l, i, struct btrfs_csum_item);
|
|
printf("\t\tcsum item\n");
|
|
break;
|
|
case BTRFS_EXTENT_CSUM_KEY:
|
|
ci = btrfs_item_ptr(l, i, struct btrfs_csum_item);
|
|
printf("\t\textent csum item\n");
|
|
break;
|
|
case BTRFS_EXTENT_DATA_KEY:
|
|
fi = btrfs_item_ptr(l, i,
|
|
struct btrfs_file_extent_item);
|
|
print_file_extent_item(l, item, fi);
|
|
break;
|
|
case BTRFS_BLOCK_GROUP_ITEM_KEY:
|
|
bi = btrfs_item_ptr(l, i,
|
|
struct btrfs_block_group_item);
|
|
read_extent_buffer(l, &bg_item, (unsigned long)bi,
|
|
sizeof(bg_item));
|
|
printf("\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
|
|
(unsigned long long)btrfs_block_group_used(&bg_item),
|
|
(unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
|
|
(unsigned long long)btrfs_block_group_flags(&bg_item));
|
|
break;
|
|
case BTRFS_CHUNK_ITEM_KEY:
|
|
print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
|
|
break;
|
|
case BTRFS_DEV_ITEM_KEY:
|
|
print_dev_item(l, btrfs_item_ptr(l, i,
|
|
struct btrfs_dev_item));
|
|
break;
|
|
case BTRFS_DEV_EXTENT_KEY:
|
|
dev_extent = btrfs_item_ptr(l, i,
|
|
struct btrfs_dev_extent);
|
|
printf("\t\tdev extent chunk_tree %llu\n"
|
|
"\t\tchunk objectid %llu chunk offset %llu "
|
|
"length %llu\n",
|
|
(unsigned long long)
|
|
btrfs_dev_extent_chunk_tree(l, dev_extent),
|
|
(unsigned long long)
|
|
btrfs_dev_extent_chunk_objectid(l, dev_extent),
|
|
(unsigned long long)
|
|
btrfs_dev_extent_chunk_offset(l, dev_extent),
|
|
(unsigned long long)
|
|
btrfs_dev_extent_length(l, dev_extent));
|
|
break;
|
|
case BTRFS_STRING_ITEM_KEY:
|
|
/* dirty, but it's simple */
|
|
str = l->data + btrfs_item_ptr_offset(l, i);
|
|
printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
|
|
break;
|
|
};
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
|
|
void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb)
|
|
{
|
|
int i;
|
|
u32 nr;
|
|
u32 size;
|
|
struct btrfs_disk_key disk_key;
|
|
struct btrfs_key key;
|
|
|
|
if (!eb)
|
|
return;
|
|
nr = btrfs_header_nritems(eb);
|
|
if (btrfs_is_leaf(eb)) {
|
|
btrfs_print_leaf(root, eb);
|
|
return;
|
|
}
|
|
printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
|
|
(unsigned long long)eb->start,
|
|
btrfs_header_level(eb), nr,
|
|
(u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
|
|
(unsigned long long)btrfs_header_generation(eb),
|
|
(unsigned long long)btrfs_header_owner(eb));
|
|
print_uuids(eb);
|
|
fflush(stdout);
|
|
size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
|
|
for (i = 0; i < nr; i++) {
|
|
u64 blocknr = btrfs_node_blockptr(eb, i);
|
|
btrfs_node_key(eb, &disk_key, i);
|
|
btrfs_disk_key_to_cpu(&key, &disk_key);
|
|
printf("\t");
|
|
btrfs_print_key(&disk_key);
|
|
printf(" block %llu (%llu) gen %llu\n",
|
|
(unsigned long long)blocknr,
|
|
(unsigned long long)blocknr / size,
|
|
(unsigned long long)btrfs_node_ptr_generation(eb, i));
|
|
fflush(stdout);
|
|
}
|
|
for (i = 0; i < nr; i++) {
|
|
struct extent_buffer *next = read_tree_block(root,
|
|
btrfs_node_blockptr(eb, i),
|
|
size,
|
|
btrfs_node_ptr_generation(eb, i));
|
|
if (!next) {
|
|
fprintf(stderr, "failed to read %llu in tree %llu\n",
|
|
(unsigned long long)btrfs_node_blockptr(eb, i),
|
|
(unsigned long long)btrfs_header_owner(eb));
|
|
continue;
|
|
}
|
|
if (btrfs_is_leaf(next) &&
|
|
btrfs_header_level(eb) != 1)
|
|
BUG();
|
|
if (btrfs_header_level(next) !=
|
|
btrfs_header_level(eb) - 1)
|
|
BUG();
|
|
btrfs_print_tree(root, next);
|
|
free_extent_buffer(next);
|
|
}
|
|
}
|
|
|