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btrfs-progs/print-tree.c

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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 stripe_len %llu\n",
(unsigned long long)btrfs_chunk_length(eb, chunk),
(unsigned long long)btrfs_chunk_owner(eb, chunk),
(unsigned long long)btrfs_chunk_stripe_len(eb, chunk));
printf("\t\ttype %s num_stripes %d\n",
chunk_flags_str, num_stripes);
for (i = 0 ; i < num_stripes ; i++) {
unsigned char dev_uuid[BTRFS_UUID_SIZE];
char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
read_extent_buffer(eb, dev_uuid,
(unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
BTRFS_UUID_SIZE);
uuid_unparse(dev_uuid, str_dev_uuid);
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));
printf("\t\t\tdev uuid: %s\n", str_dev_uuid);
}
}
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 compress_type_to_str(u8 compress_type, char *ret)
{
switch (compress_type) {
case BTRFS_COMPRESS_NONE:
strcpy(ret, "none");
break;
case BTRFS_COMPRESS_ZLIB:
strcpy(ret, "zlib");
break;
case BTRFS_COMPRESS_LZO:
strcpy(ret, "lzo");
break;
default:
sprintf(ret, "UNKNOWN.%d", compress_type);
}
}
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);
char compress_str[16];
compress_type_to_str(btrfs_file_extent_compression(eb, fi),
compress_str);
if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
printf("\t\tinline extent data size %u "
"ram %u compress(%s)\n",
btrfs_file_extent_inline_item_len(eb, item),
btrfs_file_extent_inline_len(eb, slot, fi),
compress_str);
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(%s)\n", compress_str);
}
/* 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;
}
/*
* Caller must ensure sizeof(*ret) >= 7 "RDONLY"
*/
static void root_flags_to_str(u64 flags, char *ret)
{
if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
strcat(ret, "RDONLY");
else
strcat(ret, "none");
}
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];
char flags_str[32] = {0};
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);
root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %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),
(unsigned long long)btrfs_root_last_snapshot(&root_item));
printf("\t\tflags 0x%llx(%s)\n", btrfs_root_flags(&root_item),
flags_str);
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));
}
void print_key_type(FILE *stream, u64 objectid, u8 type)
{
if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
fprintf(stream, "UNTYPED");
return;
}
switch (type) {
case BTRFS_INODE_ITEM_KEY:
fprintf(stream, "INODE_ITEM");
break;
case BTRFS_INODE_REF_KEY:
fprintf(stream, "INODE_REF");
break;
case BTRFS_INODE_EXTREF_KEY:
fprintf(stream, "INODE_EXTREF");
break;
case BTRFS_DIR_ITEM_KEY:
fprintf(stream, "DIR_ITEM");
break;
case BTRFS_DIR_INDEX_KEY:
fprintf(stream, "DIR_INDEX");
break;
case BTRFS_DIR_LOG_ITEM_KEY:
fprintf(stream, "DIR_LOG_ITEM");
break;
case BTRFS_DIR_LOG_INDEX_KEY:
fprintf(stream, "DIR_LOG_INDEX");
break;
case BTRFS_XATTR_ITEM_KEY:
fprintf(stream, "XATTR_ITEM");
break;
case BTRFS_ORPHAN_ITEM_KEY:
fprintf(stream, "ORPHAN_ITEM");
break;
case BTRFS_ROOT_ITEM_KEY:
fprintf(stream, "ROOT_ITEM");
break;
case BTRFS_ROOT_REF_KEY:
fprintf(stream, "ROOT_REF");
break;
case BTRFS_ROOT_BACKREF_KEY:
fprintf(stream, "ROOT_BACKREF");
break;
case BTRFS_EXTENT_ITEM_KEY:
fprintf(stream, "EXTENT_ITEM");
break;
case BTRFS_METADATA_ITEM_KEY:
fprintf(stream, "METADATA_ITEM");
break;
case BTRFS_TREE_BLOCK_REF_KEY:
fprintf(stream, "TREE_BLOCK_REF");
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
fprintf(stream, "SHARED_BLOCK_REF");
break;
case BTRFS_EXTENT_DATA_REF_KEY:
fprintf(stream, "EXTENT_DATA_REF");
break;
case BTRFS_SHARED_DATA_REF_KEY:
fprintf(stream, "SHARED_DATA_REF");
break;
case BTRFS_EXTENT_REF_V0_KEY:
fprintf(stream, "EXTENT_REF_V0");
break;
case BTRFS_CSUM_ITEM_KEY:
fprintf(stream, "CSUM_ITEM");
break;
case BTRFS_EXTENT_CSUM_KEY:
fprintf(stream, "EXTENT_CSUM");
break;
case BTRFS_EXTENT_DATA_KEY:
fprintf(stream, "EXTENT_DATA");
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY:
fprintf(stream, "BLOCK_GROUP_ITEM");
break;
case BTRFS_FREE_SPACE_INFO_KEY:
fprintf(stream, "FREE_SPACE_INFO");
break;
case BTRFS_FREE_SPACE_EXTENT_KEY:
fprintf(stream, "FREE_SPACE_EXTENT");
break;
case BTRFS_FREE_SPACE_BITMAP_KEY:
fprintf(stream, "FREE_SPACE_BITMAP");
break;
case BTRFS_CHUNK_ITEM_KEY:
fprintf(stream, "CHUNK_ITEM");
break;
case BTRFS_DEV_ITEM_KEY:
fprintf(stream, "DEV_ITEM");
break;
case BTRFS_DEV_EXTENT_KEY:
fprintf(stream, "DEV_EXTENT");
break;
case BTRFS_BALANCE_ITEM_KEY:
fprintf(stream, "BALANCE_ITEM");
break;
case BTRFS_DEV_REPLACE_KEY:
fprintf(stream, "DEV_REPLACE");
break;
case BTRFS_STRING_ITEM_KEY:
fprintf(stream, "STRING_ITEM");
break;
case BTRFS_QGROUP_STATUS_KEY:
fprintf(stream, "QGROUP_STATUS");
break;
case BTRFS_QGROUP_RELATION_KEY:
fprintf(stream, "QGROUP_RELATION");
break;
case BTRFS_QGROUP_INFO_KEY:
fprintf(stream, "QGROUP_INFO");
break;
case BTRFS_QGROUP_LIMIT_KEY:
fprintf(stream, "QGROUP_LIMIT");
break;
case BTRFS_DEV_STATS_KEY:
fprintf(stream, "DEV_STATS");
break;
case BTRFS_UUID_KEY_SUBVOL:
fprintf(stream, "UUID_KEY_SUBVOL");
break;
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
break;
default:
fprintf(stream, "UNKNOWN.%d", type);
};
}
void print_objectid(FILE *stream, u64 objectid, u8 type)
{
switch (type) {
case BTRFS_DEV_EXTENT_KEY:
/* device id */
fprintf(stream, "%llu", (unsigned long long)objectid);
return;
case BTRFS_QGROUP_RELATION_KEY:
fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
btrfs_qgroup_subvid(objectid));
return;
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
fprintf(stream, "0x%016llx", (unsigned long long)objectid);
return;
}
switch (objectid) {
case BTRFS_ROOT_TREE_OBJECTID:
if (type == BTRFS_DEV_ITEM_KEY)
fprintf(stream, "DEV_ITEMS");
else
fprintf(stream, "ROOT_TREE");
break;
case BTRFS_EXTENT_TREE_OBJECTID:
fprintf(stream, "EXTENT_TREE");
break;
case BTRFS_CHUNK_TREE_OBJECTID:
fprintf(stream, "CHUNK_TREE");
break;
case BTRFS_DEV_TREE_OBJECTID:
fprintf(stream, "DEV_TREE");
break;
case BTRFS_FS_TREE_OBJECTID:
fprintf(stream, "FS_TREE");
break;
case BTRFS_ROOT_TREE_DIR_OBJECTID:
fprintf(stream, "ROOT_TREE_DIR");
break;
case BTRFS_CSUM_TREE_OBJECTID:
fprintf(stream, "CSUM_TREE");
break;
case BTRFS_BALANCE_OBJECTID:
fprintf(stream, "BALANCE");
break;
case BTRFS_ORPHAN_OBJECTID:
fprintf(stream, "ORPHAN");
break;
case BTRFS_TREE_LOG_OBJECTID:
fprintf(stream, "TREE_LOG");
break;
case BTRFS_TREE_LOG_FIXUP_OBJECTID:
fprintf(stream, "LOG_FIXUP");
break;
case BTRFS_TREE_RELOC_OBJECTID:
fprintf(stream, "TREE_RELOC");
break;
case BTRFS_DATA_RELOC_TREE_OBJECTID:
fprintf(stream, "DATA_RELOC_TREE");
break;
case BTRFS_EXTENT_CSUM_OBJECTID:
fprintf(stream, "EXTENT_CSUM");
break;
case BTRFS_FREE_SPACE_OBJECTID:
fprintf(stream, "FREE_SPACE");
break;
case BTRFS_FREE_INO_OBJECTID:
fprintf(stream, "FREE_INO");
break;
case BTRFS_QUOTA_TREE_OBJECTID:
fprintf(stream, "QUOTA_TREE");
break;
case BTRFS_UUID_TREE_OBJECTID:
fprintf(stream, "UUID_TREE");
break;
case BTRFS_FREE_SPACE_TREE_OBJECTID:
fprintf(stream, "FREE_SPACE_TREE");
break;
case BTRFS_MULTIPLE_OBJECTIDS:
fprintf(stream, "MULTIPLE");
break;
case (u64)-1:
fprintf(stream, "-1");
break;
case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
if (type == BTRFS_CHUNK_ITEM_KEY) {
fprintf(stream, "FIRST_CHUNK_TREE");
break;
}
/* fall-thru */
default:
fprintf(stream, "%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(stdout, objectid, type);
printf(" ");
print_key_type(stdout, 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);
}
}
/* Caller should ensure sizeof(*ret) >= 29 "NODATASUM|NODATACOW|READONLY" */
static void inode_flags_to_str(u64 flags, char *ret)
{
int empty = 1;
if (flags & BTRFS_INODE_NODATASUM) {
empty = 0;
strcpy(ret, "NODATASUM");
}
if (flags & BTRFS_INODE_NODATACOW) {
if (!empty) {
empty = 0;
strcat(ret, "|");
}
strcat(ret, "NODATACOW");
}
if (flags & BTRFS_INODE_READONLY) {
if (!empty) {
empty = 0;
strcat(ret, "|");
}
strcat(ret, "READONLY");
}
if (empty)
strcat(ret, "none");
}
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_free_space_info *free_info;
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:
memset(flags_str, 0, sizeof(flags_str));
ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
inode_flags_to_str(btrfs_inode_flags(l, ii), flags_str);
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(%s)\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),
flags_str);
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_FREE_SPACE_INFO_KEY:
free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
printf("\t\tfree space info extent count %u flags %u\n",
(unsigned)btrfs_free_space_extent_count(l, free_info),
(unsigned)btrfs_free_space_flags(l, free_info));
break;
case BTRFS_FREE_SPACE_EXTENT_KEY:
printf("\t\tfree space extent\n");
break;
case BTRFS_FREE_SPACE_BITMAP_KEY:
printf("\t\tfree space bitmap\n");
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_rescan(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 = root->nodesize;
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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