#include "messages.h"
#include "ctree.h"
#include "disk-io.h"
#include "file-item.h"
#include "print-tree.h"
#include "accessors.h"
#include "tree-checker.h"
#include "volumes.h"
#include "raid-stripe-tree.h"
#define KEY_TYPE_BUF_SIZE 32
struct root_name_map {
u64 id;
const char *name;
};
static const struct root_name_map root_map[] = {
{ BTRFS_ROOT_TREE_OBJECTID, "ROOT_TREE" },
{ BTRFS_EXTENT_TREE_OBJECTID, "EXTENT_TREE" },
{ BTRFS_CHUNK_TREE_OBJECTID, "CHUNK_TREE" },
{ BTRFS_DEV_TREE_OBJECTID, "DEV_TREE" },
{ BTRFS_FS_TREE_OBJECTID, "FS_TREE" },
{ BTRFS_CSUM_TREE_OBJECTID, "CSUM_TREE" },
{ BTRFS_TREE_LOG_OBJECTID, "TREE_LOG" },
{ BTRFS_QUOTA_TREE_OBJECTID, "QUOTA_TREE" },
{ BTRFS_UUID_TREE_OBJECTID, "UUID_TREE" },
{ BTRFS_FREE_SPACE_TREE_OBJECTID, "FREE_SPACE_TREE" },
{ BTRFS_BLOCK_GROUP_TREE_OBJECTID, "BLOCK_GROUP_TREE" },
{ BTRFS_DATA_RELOC_TREE_OBJECTID, "DATA_RELOC_TREE" },
{ BTRFS_RAID_STRIPE_TREE_OBJECTID, "RAID_STRIPE_TREE" },
{ BTRFS_REMAP_TREE_OBJECTID, "REMAP_TREE" },
};
const char *btrfs_root_name(const struct btrfs_key *key, char *buf)
{
int i;
if (key->objectid == BTRFS_TREE_RELOC_OBJECTID) {
snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN,
"TREE_RELOC offset=%llu", key->offset);
return buf;
}
for (i = 0; i < ARRAY_SIZE(root_map); i++) {
if (root_map[i].id == key->objectid)
return root_map[i].name;
}
snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN, "%llu", key->objectid);
return buf;
}
static void print_chunk(const struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
btrfs_chunk_type(eb, chunk), num_stripes);
for (i = 0 ; i < num_stripes ; i++) {
pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
btrfs_stripe_devid_nr(eb, chunk, i),
btrfs_stripe_offset_nr(eb, chunk, i));
}
}
static void print_dev_item(const struct extent_buffer *eb,
struct btrfs_dev_item *dev_item)
{
pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
btrfs_device_id(eb, dev_item),
btrfs_device_total_bytes(eb, dev_item),
btrfs_device_bytes_used(eb, dev_item));
}
static void print_extent_data_ref(const struct extent_buffer *eb,
struct btrfs_extent_data_ref *ref)
{
pr_cont("extent data backref root %llu objectid %llu offset %llu count %u\n",
btrfs_extent_data_ref_root(eb, ref),
btrfs_extent_data_ref_objectid(eb, ref),
btrfs_extent_data_ref_offset(eb, ref),
btrfs_extent_data_ref_count(eb, ref));
}
static void print_extent_owner_ref(const struct extent_buffer *eb,
const struct btrfs_extent_owner_ref *ref)
{
ASSERT(btrfs_fs_incompat(eb->fs_info, SIMPLE_QUOTA));
pr_cont("extent data owner root %llu\n", btrfs_extent_owner_ref_root_id(eb, ref));
}
static void print_extent_item(const struct extent_buffer *eb, int slot, int type)
{
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_extent_owner_ref *oref;
struct btrfs_disk_key key;
unsigned long end;
unsigned long ptr;
u32 item_size = btrfs_item_size(eb, slot);
u64 flags;
u64 offset;
int ref_index = 0;
if (unlikely(item_size < sizeof(*ei))) {
btrfs_err(eb->fs_info,
"unexpected extent item size, has %u expect >= %zu",
item_size, sizeof(*ei));
return;
}
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
flags = btrfs_extent_flags(eb, ei);
pr_info("\t\textent refs %llu gen %llu flags %llu\n",
btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
flags);
if ((type == BTRFS_EXTENT_ITEM_KEY) &&
flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
struct btrfs_tree_block_info *info;
info = (struct btrfs_tree_block_info *)(ei + 1);
btrfs_tree_block_key(eb, info, &key);
pr_info("\t\ttree block key " BTRFS_KEY_FMT " level %d\n",
btrfs_disk_key_objectid(&key), key.type,
btrfs_disk_key_offset(&key),
btrfs_tree_block_level(eb, info));
iref = (struct btrfs_extent_inline_ref *)(info + 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);
pr_info("\t\tref#%d: ", ref_index++);
switch (type) {
case BTRFS_TREE_BLOCK_REF_KEY:
pr_cont("tree block backref root %llu\n", offset);
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
pr_cont("shared block backref parent %llu\n", offset);
if (!IS_ALIGNED(offset, eb->fs_info->sectorsize))
pr_info(
"\t\t\t(parent %llu not aligned to sectorsize %u)\n",
offset, eb->fs_info->sectorsize);
break;
case BTRFS_EXTENT_DATA_REF_KEY:
dref = (struct btrfs_extent_data_ref *)(&iref->offset);
print_extent_data_ref(eb, dref);
break;
case BTRFS_SHARED_DATA_REF_KEY:
sref = (struct btrfs_shared_data_ref *)(iref + 1);
pr_cont("shared data backref parent %llu count %u\n",
offset, btrfs_shared_data_ref_count(eb, sref));
if (!IS_ALIGNED(offset, eb->fs_info->sectorsize))
pr_info(
"\t\t\t(parent %llu not aligned to sectorsize %u)\n",
offset, eb->fs_info->sectorsize);
break;
case BTRFS_EXTENT_OWNER_REF_KEY:
oref = (struct btrfs_extent_owner_ref *)(&iref->offset);
print_extent_owner_ref(eb, oref);
break;
default:
pr_cont("(extent %llu has INVALID ref type %d)\n",
eb->start, type);
return;
}
ptr += btrfs_extent_inline_ref_size(type);
}
WARN_ON(ptr > end);
}
static void print_uuid_item(const struct extent_buffer *l, unsigned long offset,
u32 item_size)
{
if (!IS_ALIGNED(item_size, sizeof(u64))) {
btrfs_warn(l->fs_info, "uuid item with illegal size %lu",
(unsigned long)item_size);
return;
}
while (item_size) {
__le64 subvol_id;
read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
pr_info("\t\tsubvol_id %llu\n", le64_to_cpu(subvol_id));
item_size -= sizeof(u64);
offset += sizeof(u64);
}
}
static void print_raid_stripe_key(const struct extent_buffer *eb, u32 item_size,
struct btrfs_stripe_extent *stripe)
{
const int num_stripes = btrfs_num_raid_stripes(item_size);
for (int i = 0; i < num_stripes; i++)
pr_info("\t\t\tstride %d devid %llu physical %llu\n",
i, btrfs_raid_stride_devid(eb, &stripe->strides[i]),
btrfs_raid_stride_physical(eb, &stripe->strides[i]));
}
static void print_eb_refs_lock(const struct extent_buffer *eb)
{
#ifdef CONFIG_BTRFS_DEBUG
btrfs_info(eb->fs_info, "refs %u lock_owner %u current %u",
refcount_read(&eb->refs), eb->lock_owner, current->pid);
#endif
}
static void print_timespec(const struct extent_buffer *eb,
struct btrfs_timespec *timespec,
const char *prefix, const char *suffix)
{
const u64 secs = btrfs_timespec_sec(eb, timespec);
const u32 nsecs = btrfs_timespec_nsec(eb, timespec);
pr_info("%s%llu.%u%s", prefix, secs, nsecs, suffix);
}
static void print_inode_item(const struct extent_buffer *eb, int i)
{
struct btrfs_inode_item *ii = btrfs_item_ptr(eb, i, struct btrfs_inode_item);
pr_info("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n",
btrfs_inode_generation(eb, ii), btrfs_inode_transid(eb, ii),
btrfs_inode_size(eb, ii), btrfs_inode_nbytes(eb, ii));
pr_info("\t\tblock group %llu mode %o links %u uid %u gid %u\n",
btrfs_inode_block_group(eb, ii), btrfs_inode_mode(eb, ii),
btrfs_inode_nlink(eb, ii), btrfs_inode_uid(eb, ii),
btrfs_inode_gid(eb, ii));
pr_info("\t\trdev %llu sequence %llu flags 0x%llx\n",
btrfs_inode_rdev(eb, ii), btrfs_inode_sequence(eb, ii),
btrfs_inode_flags(eb, ii));
print_timespec(eb, &ii->atime, "\t\tatime ", "\n");
print_timespec(eb, &ii->ctime, "\t\tctime ", "\n");
print_timespec(eb, &ii->mtime, "\t\tmtime ", "\n");
print_timespec(eb, &ii->otime, "\t\totime ", "\n");
}
static void print_dir_item(const struct extent_buffer *eb, int i)
{
const u32 size = btrfs_item_size(eb, i);
struct btrfs_dir_item *di = btrfs_item_ptr(eb, i, struct btrfs_dir_item);
u32 cur = 0;
while (cur < size) {
const u32 name_len = btrfs_dir_name_len(eb, di);
const u32 data_len = btrfs_dir_data_len(eb, di);
const u32 len = sizeof(*di) + name_len + data_len;
struct btrfs_key location;
btrfs_dir_item_key_to_cpu(eb, di, &location);
pr_info("\t\tlocation key " BTRFS_KEY_FMT " type %d\n",
BTRFS_KEY_FMT_VALUE(&location), btrfs_dir_ftype(eb, di));
pr_info("\t\ttransid %llu data_len %u name_len %u\n",
btrfs_dir_transid(eb, di), data_len, name_len);
di = (struct btrfs_dir_item *)((char *)di + len);
cur += len;
}
}
static void print_inode_ref_item(const struct extent_buffer *eb, int i)
{
const u32 size = btrfs_item_size(eb, i);
struct btrfs_inode_ref *ref = btrfs_item_ptr(eb, i, struct btrfs_inode_ref);
u32 cur = 0;
while (cur < size) {
const u64 index = btrfs_inode_ref_index(eb, ref);
const u32 name_len = btrfs_inode_ref_name_len(eb, ref);
const u32 len = sizeof(*ref) + name_len;
pr_info("\t\tindex %llu name_len %u\n", index, name_len);
ref = (struct btrfs_inode_ref *)((char *)ref + len);
cur += len;
}
}
static void print_inode_extref_item(const struct extent_buffer *eb, int i)
{
const u32 size = btrfs_item_size(eb, i);
struct btrfs_inode_extref *extref;
u32 cur = 0;
extref = btrfs_item_ptr(eb, i, struct btrfs_inode_extref);
while (cur < size) {
const u64 index = btrfs_inode_extref_index(eb, extref);
const u32 name_len = btrfs_inode_extref_name_len(eb, extref);
const u64 parent = btrfs_inode_extref_parent(eb, extref);
const u32 len = sizeof(*extref) + name_len;
pr_info("\t\tindex %llu parent %llu name_len %u\n",
index, parent, name_len);
extref = (struct btrfs_inode_extref *)((char *)extref + len);
cur += len;
}
}
static void print_dir_log_index_item(const struct extent_buffer *eb, int i)
{
struct btrfs_dir_log_item *dlog;
dlog = btrfs_item_ptr(eb, i, struct btrfs_dir_log_item);
pr_info("\t\tdir log end %llu\n", btrfs_dir_log_end(eb, dlog));
}
static void print_extent_csum(const struct extent_buffer *eb, int i)
{
const struct btrfs_fs_info *fs_info = eb->fs_info;
const u32 size = btrfs_item_size(eb, i);
const u32 csum_bytes = (size / fs_info->csum_size) * fs_info->sectorsize;
struct btrfs_key key;
btrfs_item_key_to_cpu(eb, &key, i);
pr_info("\t\trange start %llu end %llu length %u\n",
key.offset, key.offset + csum_bytes, csum_bytes);
}
static void print_file_extent_item(const struct extent_buffer *eb, int i)
{
struct btrfs_file_extent_item *fi;
fi = btrfs_item_ptr(eb, i, struct btrfs_file_extent_item);
pr_info("\t\tgeneration %llu type %hhu\n",
btrfs_file_extent_generation(eb, fi),
btrfs_file_extent_type(eb, fi));
if (btrfs_file_extent_type(eb, fi) == BTRFS_FILE_EXTENT_INLINE) {
pr_info("\t\tinline extent data size %u ram_bytes %llu compression %hhu\n",
btrfs_file_extent_inline_item_len(eb, i),
btrfs_file_extent_ram_bytes(eb, fi),
btrfs_file_extent_compression(eb, fi));
return;
}
pr_info("\t\textent data disk bytenr %llu nr %llu\n",
btrfs_file_extent_disk_bytenr(eb, fi),
btrfs_file_extent_disk_num_bytes(eb, fi));
pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
btrfs_file_extent_offset(eb, fi),
btrfs_file_extent_num_bytes(eb, fi),
btrfs_file_extent_ram_bytes(eb, fi));
pr_info("\t\textent compression %hhu\n",
btrfs_file_extent_compression(eb, fi));
}
static void key_type_string(const struct btrfs_key *key, char *buf, int buf_size)
{
static const char *key_to_str[256] = {
[BTRFS_INODE_ITEM_KEY] = "INODE_ITEM",
[BTRFS_INODE_REF_KEY] = "INODE_REF",
[BTRFS_INODE_EXTREF_KEY] = "INODE_EXTREF",
[BTRFS_DIR_ITEM_KEY] = "DIR_ITEM",
[BTRFS_DIR_INDEX_KEY] = "DIR_INDEX",
[BTRFS_DIR_LOG_ITEM_KEY] = "DIR_LOG_ITEM",
[BTRFS_DIR_LOG_INDEX_KEY] = "DIR_LOG_INDEX",
[BTRFS_XATTR_ITEM_KEY] = "XATTR_ITEM",
[BTRFS_VERITY_DESC_ITEM_KEY] = "VERITY_DESC_ITEM",
[BTRFS_VERITY_MERKLE_ITEM_KEY] = "VERITY_MERKLE_ITEM",
[BTRFS_ORPHAN_ITEM_KEY] = "ORPHAN_ITEM",
[BTRFS_ROOT_ITEM_KEY] = "ROOT_ITEM",
[BTRFS_ROOT_REF_KEY] = "ROOT_REF",
[BTRFS_ROOT_BACKREF_KEY] = "ROOT_BACKREF",
[BTRFS_EXTENT_ITEM_KEY] = "EXTENT_ITEM",
[BTRFS_METADATA_ITEM_KEY] = "METADATA_ITEM",
[BTRFS_TREE_BLOCK_REF_KEY] = "TREE_BLOCK_REF",
[BTRFS_SHARED_BLOCK_REF_KEY] = "SHARED_BLOCK_REF",
[BTRFS_EXTENT_DATA_REF_KEY] = "EXTENT_DATA_REF",
[BTRFS_SHARED_DATA_REF_KEY] = "SHARED_DATA_REF",
[BTRFS_EXTENT_OWNER_REF_KEY] = "EXTENT_OWNER_REF",
[BTRFS_EXTENT_CSUM_KEY] = "EXTENT_CSUM",
[BTRFS_EXTENT_DATA_KEY] = "EXTENT_DATA",
[BTRFS_BLOCK_GROUP_ITEM_KEY] = "BLOCK_GROUP_ITEM",
[BTRFS_FREE_SPACE_INFO_KEY] = "FREE_SPACE_INFO",
[BTRFS_FREE_SPACE_EXTENT_KEY] = "FREE_SPACE_EXTENT",
[BTRFS_FREE_SPACE_BITMAP_KEY] = "FREE_SPACE_BITMAP",
[BTRFS_CHUNK_ITEM_KEY] = "CHUNK_ITEM",
[BTRFS_DEV_ITEM_KEY] = "DEV_ITEM",
[BTRFS_DEV_EXTENT_KEY] = "DEV_EXTENT",
[BTRFS_TEMPORARY_ITEM_KEY] = "TEMPORARY_ITEM",
[BTRFS_DEV_REPLACE_KEY] = "DEV_REPLACE",
[BTRFS_STRING_ITEM_KEY] = "STRING_ITEM",
[BTRFS_QGROUP_STATUS_KEY] = "QGROUP_STATUS",
[BTRFS_QGROUP_RELATION_KEY] = "QGROUP_RELATION",
[BTRFS_QGROUP_INFO_KEY] = "QGROUP_INFO",
[BTRFS_QGROUP_LIMIT_KEY] = "QGROUP_LIMIT",
[BTRFS_PERSISTENT_ITEM_KEY] = "PERSISTENT_ITEM",
[BTRFS_UUID_KEY_SUBVOL] = "UUID_KEY_SUBVOL",
[BTRFS_UUID_KEY_RECEIVED_SUBVOL] = "UUID_KEY_RECEIVED_SUBVOL",
[BTRFS_RAID_STRIPE_KEY] = "RAID_STRIPE",
[BTRFS_IDENTITY_REMAP_KEY] = "IDENTITY_REMAP",
[BTRFS_REMAP_KEY] = "REMAP",
[BTRFS_REMAP_BACKREF_KEY] = "REMAP_BACKREF",
};
if (key->type == 0 && key->objectid == BTRFS_FREE_SPACE_OBJECTID)
scnprintf(buf, buf_size, "UNTYPED");
else if (key_to_str[key->type])
scnprintf(buf, buf_size, "%s", key_to_str[key->type]);
else
scnprintf(buf, buf_size, "UNKNOWN.%d", key->type);
}
void btrfs_print_leaf(const struct extent_buffer *l)
{
struct btrfs_fs_info *fs_info;
int i;
u32 type, nr;
struct btrfs_root_item *ri;
struct btrfs_block_group_item *bi;
struct btrfs_extent_data_ref *dref;
struct btrfs_shared_data_ref *sref;
struct btrfs_dev_extent *dev_extent;
struct btrfs_remap_item *remap;
struct btrfs_key key;
if (!l)
return;
fs_info = l->fs_info;
nr = btrfs_header_nritems(l);
btrfs_info(fs_info,
"leaf %llu gen %llu total ptrs %d free space %d owner %llu",
btrfs_header_bytenr(l), btrfs_header_generation(l), nr,
btrfs_leaf_free_space(l), btrfs_header_owner(l));
print_eb_refs_lock(l);
for (i = 0 ; i < nr ; i++) {
char key_buf[KEY_TYPE_BUF_SIZE];
btrfs_item_key_to_cpu(l, &key, i);
type = key.type;
key_type_string(&key, key_buf, KEY_TYPE_BUF_SIZE);
pr_info("\titem %d key (%llu %s %llu) itemoff %d itemsize %d\n",
i, key.objectid, key_buf, key.offset,
btrfs_item_offset(l, i), btrfs_item_size(l, i));
switch (type) {
case BTRFS_INODE_ITEM_KEY:
print_inode_item(l, i);
break;
case BTRFS_INODE_REF_KEY:
print_inode_ref_item(l, i);
break;
case BTRFS_INODE_EXTREF_KEY:
print_inode_extref_item(l, i);
break;
case BTRFS_DIR_ITEM_KEY:
case BTRFS_DIR_INDEX_KEY:
case BTRFS_XATTR_ITEM_KEY:
print_dir_item(l, i);
break;
case BTRFS_DIR_LOG_INDEX_KEY:
print_dir_log_index_item(l, i);
break;
case BTRFS_EXTENT_CSUM_KEY:
print_extent_csum(l, i);
break;
case BTRFS_ROOT_ITEM_KEY:
ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
pr_info("\t\troot data bytenr %llu refs %u\n",
btrfs_disk_root_bytenr(l, ri),
btrfs_disk_root_refs(l, ri));
break;
case BTRFS_EXTENT_ITEM_KEY:
case BTRFS_METADATA_ITEM_KEY:
print_extent_item(l, i, type);
break;
case BTRFS_TREE_BLOCK_REF_KEY:
pr_info("\t\ttree block backref\n");
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
pr_info("\t\tshared block backref\n");
break;
case BTRFS_EXTENT_DATA_REF_KEY:
dref = btrfs_item_ptr(l, i,
struct btrfs_extent_data_ref);
print_extent_data_ref(l, dref);
break;
case BTRFS_SHARED_DATA_REF_KEY:
sref = btrfs_item_ptr(l, i,
struct btrfs_shared_data_ref);
pr_info("\t\tshared data backref count %u\n",
btrfs_shared_data_ref_count(l, sref));
break;
case BTRFS_EXTENT_DATA_KEY:
print_file_extent_item(l, i);
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY:
bi = btrfs_item_ptr(l, i,
struct btrfs_block_group_item);
pr_info(
"\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
btrfs_block_group_used(l, bi),
btrfs_block_group_chunk_objectid(l, bi),
btrfs_block_group_flags(l, bi));
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);
pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
btrfs_dev_extent_chunk_tree(l, dev_extent),
btrfs_dev_extent_chunk_objectid(l, dev_extent),
btrfs_dev_extent_chunk_offset(l, dev_extent),
btrfs_dev_extent_length(l, dev_extent));
break;
case BTRFS_PERSISTENT_ITEM_KEY:
pr_info("\t\tpersistent item objectid %llu offset %llu\n",
key.objectid, key.offset);
switch (key.objectid) {
case BTRFS_DEV_STATS_OBJECTID:
pr_info("\t\tdevice stats\n");
break;
default:
pr_info("\t\tunknown persistent item\n");
}
break;
case BTRFS_TEMPORARY_ITEM_KEY:
pr_info("\t\ttemporary item objectid %llu offset %llu\n",
key.objectid, key.offset);
switch (key.objectid) {
case BTRFS_BALANCE_OBJECTID:
pr_info("\t\tbalance status\n");
break;
default:
pr_info("\t\tunknown temporary item\n");
}
break;
case BTRFS_DEV_REPLACE_KEY:
pr_info("\t\tdev replace\n");
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(l, i));
break;
case BTRFS_RAID_STRIPE_KEY:
print_raid_stripe_key(l, btrfs_item_size(l, i),
btrfs_item_ptr(l, i, struct btrfs_stripe_extent));
break;
case BTRFS_REMAP_KEY:
case BTRFS_REMAP_BACKREF_KEY:
remap = btrfs_item_ptr(l, i, struct btrfs_remap_item);
pr_info("\t\taddress %llu\n", btrfs_remap_address(l, remap));
break;
}
}
}
void btrfs_print_tree(const struct extent_buffer *c, bool follow)
{
struct btrfs_fs_info *fs_info;
int i; u32 nr;
struct btrfs_key key;
int level;
if (!c)
return;
fs_info = c->fs_info;
nr = btrfs_header_nritems(c);
level = btrfs_header_level(c);
if (level == 0) {
btrfs_print_leaf(c);
return;
}
btrfs_info(fs_info,
"node %llu level %d gen %llu total ptrs %d free spc %u owner %llu",
btrfs_header_bytenr(c), level, btrfs_header_generation(c),
nr, (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr,
btrfs_header_owner(c));
print_eb_refs_lock(c);
for (i = 0; i < nr; i++) {
btrfs_node_key_to_cpu(c, &key, i);
pr_info("\tkey %d " BTRFS_KEY_FMT " block %llu gen %llu\n",
i, BTRFS_KEY_FMT_VALUE(&key), btrfs_node_blockptr(c, i),
btrfs_node_ptr_generation(c, i));
}
if (!follow)
return;
for (i = 0; i < nr; i++) {
struct btrfs_tree_parent_check check = {
.level = level - 1,
.transid = btrfs_node_ptr_generation(c, i),
.owner_root = btrfs_header_owner(c),
.has_first_key = true
};
struct extent_buffer *next;
btrfs_node_key_to_cpu(c, &check.first_key, i);
next = read_tree_block(fs_info, btrfs_node_blockptr(c, i), &check);
if (IS_ERR(next))
continue;
if (!extent_buffer_uptodate(next)) {
free_extent_buffer(next);
continue;
}
if (btrfs_is_leaf(next) &&
level != 1)
BUG();
if (btrfs_header_level(next) !=
level - 1)
BUG();
btrfs_print_tree(next, follow);
free_extent_buffer(next);
}
}
