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btrfs-progs/print-tree.c
Qu Wenruo df0bb2f1d2 btrfs-progs: Add nbytes output for print-tree and reformat inode output 
The original implementation doesn't output the nbytes for an inode.
Add the output and since the output is too long, reformat it to multi
lines.

This is very handy to debug related bugs.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
2015-06-26 16:47:57 +02:00

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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 <stdio.h>
#include <stdlib.h>
#include <uuid/uuid.h>
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
#include "utils.h"
static void print_dir_item_type(struct extent_buffer *eb,
struct btrfs_dir_item *di)
{
u8 type = btrfs_dir_type(eb, di);
switch (type) {
case BTRFS_FT_REG_FILE:
printf("FILE");
break;
case BTRFS_FT_DIR:
printf("DIR");
break;
case BTRFS_FT_CHRDEV:
printf("CHRDEV");
break;
case BTRFS_FT_BLKDEV:
printf("BLKDEV");
break;
case BTRFS_FT_FIFO:
printf("FIFO");
break;
case BTRFS_FT_SOCK:
printf("SOCK");
break;
case BTRFS_FT_SYMLINK:
printf("SYMLINK");
break;
case BTRFS_FT_XATTR:
printf("XATTR");
break;
default:
printf("%u", type);
}
}
static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
struct btrfs_dir_item *di)
{
u32 total;
u32 cur = 0;
u32 len;
u32 name_len;
u32 data_len;
char namebuf[BTRFS_NAME_LEN];
struct btrfs_disk_key location;
total = btrfs_item_size(eb, item);
while(cur < total) {
btrfs_dir_item_key(eb, di, &location);
printf("\t\tlocation ");
btrfs_print_key(&location);
printf(" type ");
print_dir_item_type(eb, di);
printf("\n");
name_len = btrfs_dir_name_len(eb, di);
data_len = btrfs_dir_data_len(eb, di);
len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
printf("\t\tnamelen %u datalen %u name: %.*s\n",
name_len, data_len, len, namebuf);
if (data_len) {
len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf);
read_extent_buffer(eb, namebuf,
(unsigned long)(di + 1) + name_len, len);
printf("\t\tdata %.*s\n", len, namebuf);
}
len = sizeof(*di) + name_len + data_len;
di = (struct btrfs_dir_item *)((char *)di + len);
cur += len;
}
return 0;
}
static int print_inode_extref_item(struct extent_buffer *eb,
struct btrfs_item *item,
struct btrfs_inode_extref *extref)
{
u32 total;
u32 cur = 0;
u32 len;
u32 name_len = 0;
u64 index = 0;
u64 parent_objid;
char namebuf[BTRFS_NAME_LEN];
total = btrfs_item_size(eb, item);
while (cur < total) {
index = btrfs_inode_extref_index(eb, extref);
name_len = btrfs_inode_extref_name_len(eb, extref);
parent_objid = btrfs_inode_extref_parent(eb, extref);
len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
printf("\t\tinode extref index %llu parent %llu namelen %u "
"name: %.*s\n",
(unsigned long long)index,
(unsigned long long)parent_objid,
name_len, len, namebuf);
len = sizeof(*extref) + name_len;
extref = (struct btrfs_inode_extref *)((char *)extref + len);
cur += len;
}
return 0;
}
static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
struct btrfs_inode_ref *ref)
{
u32 total;
u32 cur = 0;
u32 len;
u32 name_len;
u64 index;
char namebuf[BTRFS_NAME_LEN];
total = btrfs_item_size(eb, item);
while(cur < total) {
name_len = btrfs_inode_ref_name_len(eb, ref);
index = btrfs_inode_ref_index(eb, ref);
len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
(unsigned long long)index, name_len, len, namebuf);
len = sizeof(*ref) + name_len;
ref = (struct btrfs_inode_ref *)((char *)ref + len);
cur += len;
}
return 0;
}
/* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */
static void bg_flags_to_str(u64 flags, char *ret)
{
int empty = 1;
if (flags & BTRFS_BLOCK_GROUP_DATA) {
empty = 0;
strcpy(ret, "DATA");
}
if (flags & BTRFS_BLOCK_GROUP_METADATA) {
if (!empty)
strcat(ret, "|");
strcat(ret, "METADATA");
}
if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
if (!empty)
strcat(ret, "|");
strcat(ret, "SYSTEM");
}
switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
case BTRFS_BLOCK_GROUP_RAID0:
strcat(ret, "|RAID0");
break;
case BTRFS_BLOCK_GROUP_RAID1:
strcat(ret, "|RAID1");
break;
case BTRFS_BLOCK_GROUP_DUP:
strcat(ret, "|DUP");
break;
case BTRFS_BLOCK_GROUP_RAID10:
strcat(ret, "|RAID10");
break;
case BTRFS_BLOCK_GROUP_RAID5:
strcat(ret, "|RAID5");
break;
case BTRFS_BLOCK_GROUP_RAID6:
strcat(ret, "|RAID6");
break;
default:
break;
}
}
/* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */
static void qgroup_flags_to_str(u64 flags, char *ret)
{
if (flags & BTRFS_QGROUP_STATUS_FLAG_ON)
strcpy(ret, "ON");
else
strcpy(ret, "OFF");
if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN)
strcat(ret, "|SCANNING");
if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
strcat(ret, "|INCONSISTENT");
}
void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
char chunk_flags_str[32] = {0};
bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
printf("\t\tchunk length %llu owner %llu type %s num_stripes %d\n",
(unsigned long long)btrfs_chunk_length(eb, chunk),
(unsigned long long)btrfs_chunk_owner(eb, chunk),
chunk_flags_str, num_stripes);
for (i = 0 ; i < num_stripes ; i++) {
printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
(unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
}
}
static void print_dev_item(struct extent_buffer *eb,
struct btrfs_dev_item *dev_item)
{
char disk_uuid_c[BTRFS_UUID_UNPARSED_SIZE];
u8 disk_uuid[BTRFS_UUID_SIZE];
read_extent_buffer(eb, disk_uuid,
(unsigned long)btrfs_device_uuid(dev_item),
BTRFS_UUID_SIZE);
uuid_unparse(disk_uuid, disk_uuid_c);
printf("\t\tdev item devid %llu "
"total_bytes %llu bytes used %Lu\n"
"\t\tdev uuid %s\n",
(unsigned long long)btrfs_device_id(eb, dev_item),
(unsigned long long)btrfs_device_total_bytes(eb, dev_item),
(unsigned long long)btrfs_device_bytes_used(eb, dev_item),
disk_uuid_c);
}
static void print_uuids(struct extent_buffer *eb)
{
char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
u8 disk_uuid[BTRFS_UUID_SIZE];
read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(),
BTRFS_FSID_SIZE);
fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
uuid_unparse(disk_uuid, fs_uuid);
read_extent_buffer(eb, disk_uuid,
btrfs_header_chunk_tree_uuid(eb),
BTRFS_UUID_SIZE);
chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
uuid_unparse(disk_uuid, chunk_uuid);
printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
}
static void print_file_extent_item(struct extent_buffer *eb,
struct btrfs_item *item,
int slot,
struct btrfs_file_extent_item *fi)
{
int extent_type = btrfs_file_extent_type(eb, fi);
if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
printf("\t\tinline extent data size %u "
"ram %u compress %d\n",
btrfs_file_extent_inline_item_len(eb, item),
btrfs_file_extent_inline_len(eb, slot, fi),
btrfs_file_extent_compression(eb, fi));
return;
}
if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
printf("\t\tprealloc data disk byte %llu nr %llu\n",
(unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
(unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
printf("\t\tprealloc data offset %llu nr %llu\n",
(unsigned long long)btrfs_file_extent_offset(eb, fi),
(unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
return;
}
printf("\t\textent data disk byte %llu nr %llu\n",
(unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
(unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
printf("\t\textent data offset %llu nr %llu ram %llu\n",
(unsigned long long)btrfs_file_extent_offset(eb, fi),
(unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
(unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
printf("\t\textent compression %d\n",
btrfs_file_extent_compression(eb, fi));
}
/* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
static void extent_flags_to_str(u64 flags, char *ret)
{
int empty = 1;
if (flags & BTRFS_EXTENT_FLAG_DATA) {
empty = 0;
strcpy(ret, "DATA");
}
if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
if (!empty) {
empty = 0;
strcat(ret, "|");
}
strcat(ret, "TREE_BLOCK");
}
if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
strcat(ret, "|");
strcat(ret, "FULL_BACKREF");
}
}
void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
{
struct btrfs_extent_item *ei;
struct btrfs_extent_inline_ref *iref;
struct btrfs_extent_data_ref *dref;
struct btrfs_shared_data_ref *sref;
struct btrfs_disk_key key;
unsigned long end;
unsigned long ptr;
int type;
u32 item_size = btrfs_item_size_nr(eb, slot);
u64 flags;
u64 offset;
char flags_str[32] = {0};
if (item_size < sizeof(*ei)) {
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
struct btrfs_extent_item_v0 *ei0;
BUG_ON(item_size != sizeof(*ei0));
ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
printf("\t\textent refs %u\n",
btrfs_extent_refs_v0(eb, ei0));
return;
#else
BUG();
#endif
}
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
flags = btrfs_extent_flags(eb, ei);
extent_flags_to_str(flags, flags_str);
printf("\t\textent refs %llu gen %llu flags %s\n",
(unsigned long long)btrfs_extent_refs(eb, ei),
(unsigned long long)btrfs_extent_generation(eb, ei),
flags_str);
if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
struct btrfs_tree_block_info *info;
info = (struct btrfs_tree_block_info *)(ei + 1);
btrfs_tree_block_key(eb, info, &key);
printf("\t\ttree block ");
btrfs_print_key(&key);
printf(" level %d\n", btrfs_tree_block_level(eb, info));
iref = (struct btrfs_extent_inline_ref *)(info + 1);
} else if (metadata) {
struct btrfs_key tmp;
btrfs_item_key_to_cpu(eb, &tmp, slot);
printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
} else{
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
}
ptr = (unsigned long)iref;
end = (unsigned long)ei + item_size;
while (ptr < end) {
iref = (struct btrfs_extent_inline_ref *)ptr;
type = btrfs_extent_inline_ref_type(eb, iref);
offset = btrfs_extent_inline_ref_offset(eb, iref);
switch (type) {
case BTRFS_TREE_BLOCK_REF_KEY:
printf("\t\ttree block backref root %llu\n",
(unsigned long long)offset);
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
printf("\t\tshared block backref parent %llu\n",
(unsigned long long)offset);
break;
case BTRFS_EXTENT_DATA_REF_KEY:
dref = (struct btrfs_extent_data_ref *)(&iref->offset);
printf("\t\textent data backref root %llu "
"objectid %llu offset %llu count %u\n",
(unsigned long long)btrfs_extent_data_ref_root(eb, dref),
(unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
(unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
btrfs_extent_data_ref_count(eb, dref));
break;
case BTRFS_SHARED_DATA_REF_KEY:
sref = (struct btrfs_shared_data_ref *)(iref + 1);
printf("\t\tshared data backref parent %llu count %u\n",
(unsigned long long)offset,
btrfs_shared_data_ref_count(eb, sref));
break;
default:
return;
}
ptr += btrfs_extent_inline_ref_size(type);
}
WARN_ON(ptr > end);
}
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
{
struct btrfs_extent_ref_v0 *ref0;
ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
printf("\t\textent back ref root %llu gen %llu "
"owner %llu num_refs %lu\n",
(unsigned long long)btrfs_ref_root_v0(eb, ref0),
(unsigned long long)btrfs_ref_generation_v0(eb, ref0),
(unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
(unsigned long)btrfs_ref_count_v0(eb, ref0));
}
#endif
static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
{
struct btrfs_root_ref *ref;
char namebuf[BTRFS_NAME_LEN];
int namelen;
ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
namelen = btrfs_root_ref_name_len(leaf, ref);
read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
(unsigned long long)btrfs_root_ref_dirid(leaf, ref),
(unsigned long long)btrfs_root_ref_sequence(leaf, ref),
namelen, namebuf);
}
static int count_bytes(void *buf, int len, char b)
{
int cnt = 0;
int i;
for (i = 0; i < len; i++) {
if (((char*)buf)[i] == b)
cnt++;
}
return cnt;
}
static void print_root(struct extent_buffer *leaf, int slot)
{
struct btrfs_root_item *ri;
struct btrfs_root_item root_item;
int len;
char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
len = btrfs_item_size_nr(leaf, slot);
memset(&root_item, 0, sizeof(root_item));
read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu\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),
(unsigned long long)btrfs_root_generation(&root_item));
if (root_item.generation == root_item.generation_v2) {
uuid_unparse(root_item.uuid, uuid_str);
printf("\t\tuuid %s\n", uuid_str);
if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
uuid_unparse(root_item.parent_uuid, uuid_str);
printf("\t\tparent_uuid %s\n", uuid_str);
}
if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
uuid_unparse(root_item.received_uuid, uuid_str);
printf("\t\treceived_uuid %s\n", uuid_str);
}
if (root_item.ctransid) {
printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
btrfs_root_ctransid(&root_item),
btrfs_root_otransid(&root_item),
btrfs_root_stransid(&root_item),
btrfs_root_rtransid(&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);
}
}
static void print_free_space_header(struct extent_buffer *leaf, int slot)
{
struct btrfs_free_space_header *header;
struct btrfs_disk_key location;
header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
btrfs_free_space_key(leaf, header, &location);
printf("\t\tlocation ");
btrfs_print_key(&location);
printf("\n");
printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
(unsigned long long)btrfs_free_space_generation(leaf, header),
(unsigned long long)btrfs_free_space_entries(leaf, header),
(unsigned long long)btrfs_free_space_bitmaps(leaf, header));
}
static void print_key_type(u64 objectid, u8 type)
{
if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
printf("UNTYPED");
return;
}
switch (type) {
case BTRFS_INODE_ITEM_KEY:
printf("INODE_ITEM");
break;
case BTRFS_INODE_REF_KEY:
printf("INODE_REF");
break;
case BTRFS_INODE_EXTREF_KEY:
printf("INODE_EXTREF");
break;
case BTRFS_DIR_ITEM_KEY:
printf("DIR_ITEM");
break;
case BTRFS_DIR_INDEX_KEY:
printf("DIR_INDEX");
break;
case BTRFS_DIR_LOG_ITEM_KEY:
printf("DIR_LOG_ITEM");
break;
case BTRFS_DIR_LOG_INDEX_KEY:
printf("DIR_LOG_INDEX");
break;
case BTRFS_XATTR_ITEM_KEY:
printf("XATTR_ITEM");
break;
case BTRFS_ORPHAN_ITEM_KEY:
printf("ORPHAN_ITEM");
break;
case BTRFS_ROOT_ITEM_KEY:
printf("ROOT_ITEM");
break;
case BTRFS_ROOT_REF_KEY:
printf("ROOT_REF");
break;
case BTRFS_ROOT_BACKREF_KEY:
printf("ROOT_BACKREF");
break;
case BTRFS_EXTENT_ITEM_KEY:
printf("EXTENT_ITEM");
break;
case BTRFS_METADATA_ITEM_KEY:
printf("METADATA_ITEM");
break;
case BTRFS_TREE_BLOCK_REF_KEY:
printf("TREE_BLOCK_REF");
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
printf("SHARED_BLOCK_REF");
break;
case BTRFS_EXTENT_DATA_REF_KEY:
printf("EXTENT_DATA_REF");
break;
case BTRFS_SHARED_DATA_REF_KEY:
printf("SHARED_DATA_REF");
break;
case BTRFS_EXTENT_REF_V0_KEY:
printf("EXTENT_REF_V0");
break;
case BTRFS_CSUM_ITEM_KEY:
printf("CSUM_ITEM");
break;
case BTRFS_EXTENT_CSUM_KEY:
printf("EXTENT_CSUM");
break;
case BTRFS_EXTENT_DATA_KEY:
printf("EXTENT_DATA");
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY:
printf("BLOCK_GROUP_ITEM");
break;
case BTRFS_CHUNK_ITEM_KEY:
printf("CHUNK_ITEM");
break;
case BTRFS_DEV_ITEM_KEY:
printf("DEV_ITEM");
break;
case BTRFS_DEV_EXTENT_KEY:
printf("DEV_EXTENT");
break;
case BTRFS_BALANCE_ITEM_KEY:
printf("BALANCE_ITEM");
break;
case BTRFS_DEV_REPLACE_KEY:
printf("DEV_REPLACE");
break;
case BTRFS_STRING_ITEM_KEY:
printf("STRING_ITEM");
break;
case BTRFS_QGROUP_STATUS_KEY:
printf("QGROUP_STATUS");
break;
case BTRFS_QGROUP_RELATION_KEY:
printf("QGROUP_RELATION");
break;
case BTRFS_QGROUP_INFO_KEY:
printf("QGROUP_INFO");
break;
case BTRFS_QGROUP_LIMIT_KEY:
printf("QGROUP_LIMIT");
break;
case BTRFS_DEV_STATS_KEY:
printf("DEV_STATS");
break;
case BTRFS_UUID_KEY_SUBVOL:
printf("UUID_KEY_SUBVOL");
break;
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
printf("UUID_KEY_RECEIVED_SUBVOL");
break;
default:
printf("UNKNOWN.%d", type);
};
}
static void print_objectid(u64 objectid, u8 type)
{
switch (type) {
case BTRFS_DEV_EXTENT_KEY:
printf("%llu", (unsigned long long)objectid); /* device id */
return;
case BTRFS_QGROUP_RELATION_KEY:
printf("%llu/%llu", btrfs_qgroup_level(objectid),
btrfs_qgroup_subvid(objectid));
return;
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
printf("0x%016llx", (unsigned long long)objectid);
return;
}
switch (objectid) {
case BTRFS_ROOT_TREE_OBJECTID:
if (type == BTRFS_DEV_ITEM_KEY)
printf("DEV_ITEMS");
else
printf("ROOT_TREE");
break;
case BTRFS_EXTENT_TREE_OBJECTID:
printf("EXTENT_TREE");
break;
case BTRFS_CHUNK_TREE_OBJECTID:
printf("CHUNK_TREE");
break;
case BTRFS_DEV_TREE_OBJECTID:
printf("DEV_TREE");
break;
case BTRFS_FS_TREE_OBJECTID:
printf("FS_TREE");
break;
case BTRFS_ROOT_TREE_DIR_OBJECTID:
printf("ROOT_TREE_DIR");
break;
case BTRFS_CSUM_TREE_OBJECTID:
printf("CSUM_TREE");
break;
case BTRFS_BALANCE_OBJECTID:
printf("BALANCE");
break;
case BTRFS_ORPHAN_OBJECTID:
printf("ORPHAN");
break;
case BTRFS_TREE_LOG_OBJECTID:
printf("TREE_LOG");
break;
case BTRFS_TREE_LOG_FIXUP_OBJECTID:
printf("LOG_FIXUP");
break;
case BTRFS_TREE_RELOC_OBJECTID:
printf("TREE_RELOC");
break;
case BTRFS_DATA_RELOC_TREE_OBJECTID:
printf("DATA_RELOC_TREE");
break;
case BTRFS_EXTENT_CSUM_OBJECTID:
printf("EXTENT_CSUM");
break;
case BTRFS_FREE_SPACE_OBJECTID:
printf("FREE_SPACE");
break;
case BTRFS_FREE_INO_OBJECTID:
printf("FREE_INO");
break;
case BTRFS_QUOTA_TREE_OBJECTID:
printf("QUOTA_TREE");
break;
case BTRFS_UUID_TREE_OBJECTID:
printf("UUID_TREE");
break;
case BTRFS_MULTIPLE_OBJECTIDS:
printf("MULTIPLE");
break;
case (u64)-1:
printf("-1");
break;
case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
if (type == BTRFS_CHUNK_ITEM_KEY) {
printf("FIRST_CHUNK_TREE");
break;
}
/* fall-thru */
default:
printf("%llu", (unsigned long long)objectid);
}
}
void btrfs_print_key(struct btrfs_disk_key *disk_key)
{
u64 objectid = btrfs_disk_key_objectid(disk_key);
u8 type = btrfs_disk_key_type(disk_key);
u64 offset = btrfs_disk_key_offset(disk_key);
printf("key (");
print_objectid(objectid, type);
printf(" ");
print_key_type(objectid, type);
switch (type) {
case BTRFS_QGROUP_RELATION_KEY:
case BTRFS_QGROUP_INFO_KEY:
case BTRFS_QGROUP_LIMIT_KEY:
printf(" %llu/%llu)", btrfs_qgroup_level(offset),
btrfs_qgroup_subvid(offset));
break;
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
printf(" 0x%016llx)", (unsigned long long)offset);
break;
default:
if (offset == (u64)-1)
printf(" -1)");
else
printf(" %llu)", (unsigned long long)offset);
break;
}
}
static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
u32 item_size)
{
if (item_size & (sizeof(u64) - 1)) {
printf("btrfs: uuid item with illegal size %lu!\n",
(unsigned long)item_size);
return;
}
while (item_size) {
__le64 subvol_id;
read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
printf("\t\tsubvol_id %llu\n",
(unsigned long long)le64_to_cpu(subvol_id));
item_size -= sizeof(u64);
offset += sizeof(u64);
}
}
void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
{
int i;
char *str;
struct btrfs_item *item;
struct btrfs_dir_item *di;
struct btrfs_inode_item *ii;
struct btrfs_file_extent_item *fi;
struct btrfs_block_group_item *bi;
struct btrfs_extent_data_ref *dref;
struct btrfs_shared_data_ref *sref;
struct btrfs_inode_ref *iref;
struct btrfs_inode_extref *iref2;
struct btrfs_dev_extent *dev_extent;
struct btrfs_disk_key disk_key;
struct btrfs_block_group_item bg_item;
struct btrfs_dir_log_item *dlog;
struct btrfs_qgroup_info_item *qg_info;
struct btrfs_qgroup_limit_item *qg_limit;
struct btrfs_qgroup_status_item *qg_status;
u32 nr = btrfs_header_nritems(l);
u64 objectid;
u32 type;
char flags_str[32];
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(i);
btrfs_item_key(l, &disk_key, i);
objectid = btrfs_disk_key_objectid(&disk_key);
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));
if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
print_free_space_header(l, i);
switch (type) {
case BTRFS_INODE_ITEM_KEY:
ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
"\t\tblock group %llu mode %o links %u uid %u gid %u\n"
"\t\trdev %llu flags 0x%llx\n",
(unsigned long long)btrfs_inode_generation(l, ii),
(unsigned long long)btrfs_inode_transid(l, ii),
(unsigned long long)btrfs_inode_size(l, ii),
(unsigned long long)btrfs_inode_nbytes(l, ii),
(unsigned long long)btrfs_inode_block_group(l,ii),
btrfs_inode_mode(l, ii),
btrfs_inode_nlink(l, ii),
btrfs_inode_uid(l, ii),
btrfs_inode_gid(l, ii),
(unsigned long long)btrfs_inode_rdev(l,ii),
(unsigned long long)btrfs_inode_flags(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_INODE_EXTREF_KEY:
iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
print_inode_extref_item(l, item, iref2);
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",
(unsigned long long)btrfs_dir_log_end(l, dlog));
break;
case BTRFS_ORPHAN_ITEM_KEY:
printf("\t\torphan item\n");
break;
case BTRFS_ROOT_ITEM_KEY:
print_root(l, i);
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, 0);
break;
case BTRFS_METADATA_ITEM_KEY:
print_extent_item(l, i, 1);
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:
printf("\t\tcsum item\n");
break;
case BTRFS_EXTENT_CSUM_KEY:
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, i, 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));
memset(flags_str, 0, sizeof(flags_str));
bg_flags_to_str(btrfs_block_group_flags(&bg_item),
flags_str);
printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
(unsigned long long)btrfs_block_group_used(&bg_item),
(unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
flags_str);
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_QGROUP_STATUS_KEY:
qg_status = btrfs_item_ptr(l, i,
struct btrfs_qgroup_status_item);
memset(flags_str, 0, sizeof(flags_str));
qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
flags_str);
printf("\t\tversion %llu generation %llu flags %s "
"scan %lld\n",
(unsigned long long)
btrfs_qgroup_status_version(l, qg_status),
(unsigned long long)
btrfs_qgroup_status_generation(l, qg_status),
flags_str,
(unsigned long long)
btrfs_qgroup_status_scan(l, qg_status));
break;
case BTRFS_QGROUP_RELATION_KEY:
break;
case BTRFS_QGROUP_INFO_KEY:
qg_info = btrfs_item_ptr(l, i,
struct btrfs_qgroup_info_item);
printf("\t\tgeneration %llu\n"
"\t\treferenced %llu referenced compressed %llu\n"
"\t\texclusive %llu exclusive compressed %llu\n",
(unsigned long long)
btrfs_qgroup_info_generation(l, qg_info),
(unsigned long long)
btrfs_qgroup_info_referenced(l, qg_info),
(unsigned long long)
btrfs_qgroup_info_referenced_compressed(l,
qg_info),
(unsigned long long)
btrfs_qgroup_info_exclusive(l, qg_info),
(unsigned long long)
btrfs_qgroup_info_exclusive_compressed(l,
qg_info));
break;
case BTRFS_QGROUP_LIMIT_KEY:
qg_limit = btrfs_item_ptr(l, i,
struct btrfs_qgroup_limit_item);
printf("\t\tflags %llx\n"
"\t\tmax referenced %lld max exclusive %lld\n"
"\t\trsv referenced %lld rsv exclusive %lld\n",
(unsigned long long)
btrfs_qgroup_limit_flags(l, qg_limit),
(long long)
btrfs_qgroup_limit_max_referenced(l, qg_limit),
(long long)
btrfs_qgroup_limit_max_exclusive(l, qg_limit),
(long long)
btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
(long long)
btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
break;
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
print_uuid_item(l, btrfs_item_ptr_offset(l, i),
btrfs_item_size_nr(l, i));
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;
case BTRFS_DEV_STATS_KEY:
printf("\t\tdevice stats\n");
break;
};
fflush(stdout);
}
}
void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
{
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);
}
if (!follow)
return;
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 (!extent_buffer_uptodate(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, 1);
free_extent_buffer(next);
}
}
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