[linux-2.6-block.git] / fs / btrfs / print-tree.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2007 Oracle.  All rights reserved.
 */

#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"

static void print_chunk(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(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(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_item(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_disk_key key;
	unsigned long end;
	unsigned long ptr;
	u32 item_size = btrfs_item_size_nr(eb, slot);
	u64 flags;
	u64 offset;
	int ref_index = 0;

	if (unlikely(item_size < sizeof(*ei))) {
		btrfs_print_v0_err(eb->fs_info);
		btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL);
	}

	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 (%llu %u %llu) 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);
			/*
			 * offset is supposed to be a tree block which
			 * must be aligned to nodesize.
			 */
			if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
				pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
					offset, (unsigned long long)eb->fs_info->nodesize);
			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));
			/*
			 * offset is supposed to be a tree block which
			 * must be aligned to nodesize.
			 */
			if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
				pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
				     offset, (unsigned long long)eb->fs_info->nodesize);
			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(struct extent_buffer *l, unsigned long offset,
			    u32 item_size)
{
	if (!IS_ALIGNED(item_size, sizeof(u64))) {
		pr_warn("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(subvol_id));
		pr_info("\t\tsubvol_id %llu\n",
		       (unsigned long long)le64_to_cpu(subvol_id));
		item_size -= sizeof(u64);
		offset += sizeof(u64);
	}
}

/*
 * Helper to output refs and locking status of extent buffer.  Useful to debug
 * race condition related problems.
 */
static void print_eb_refs_lock(struct extent_buffer *eb)
{
#ifdef CONFIG_BTRFS_DEBUG
	btrfs_info(eb->fs_info,
"refs %u lock (w:%d r:%d bw:%d br:%d sw:%d sr:%d) lock_owner %u current %u",
		   atomic_read(&eb->refs), atomic_read(&eb->write_locks),
		   atomic_read(&eb->read_locks),
		   atomic_read(&eb->blocking_writers),
		   atomic_read(&eb->blocking_readers),
		   atomic_read(&eb->spinning_writers),
		   atomic_read(&eb->spinning_readers),
		   eb->lock_owner, current->pid);
#endif
}

void btrfs_print_leaf(struct extent_buffer *l)
{
	struct btrfs_fs_info *fs_info;
	int i;
	u32 type, nr;
	struct btrfs_item *item;
	struct btrfs_root_item *ri;
	struct btrfs_dir_item *di;
	struct btrfs_inode_item *ii;
	struct btrfs_block_group_item *bi;
	struct btrfs_file_extent_item *fi;
	struct btrfs_extent_data_ref *dref;
	struct btrfs_shared_data_ref *sref;
	struct btrfs_dev_extent *dev_extent;
	struct btrfs_key key;
	struct btrfs_key found_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(fs_info, l), btrfs_header_owner(l));
	print_eb_refs_lock(l);
	for (i = 0 ; i < nr ; i++) {
		item = btrfs_item_nr(i);
		btrfs_item_key_to_cpu(l, &key, i);
		type = key.type;
		pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
			i, key.objectid, type, key.offset,
			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);
			pr_info("\t\tinode generation %llu size %llu mode %o\n",
			       btrfs_inode_generation(l, ii),
			       btrfs_inode_size(l, ii),
			       btrfs_inode_mode(l, ii));
			break;
		case BTRFS_DIR_ITEM_KEY:
			di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
			btrfs_dir_item_key_to_cpu(l, di, &found_key);
			pr_info("\t\tdir oid %llu type %u\n",
				found_key.objectid,
				btrfs_dir_type(l, di));
			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:
			fi = btrfs_item_ptr(l, i,
					    struct btrfs_file_extent_item);
			if (btrfs_file_extent_type(l, fi) ==
			    BTRFS_FILE_EXTENT_INLINE) {
				pr_info("\t\tinline extent data size %llu\n",
				       btrfs_file_extent_ram_bytes(l, fi));
				break;
			}
			pr_info("\t\textent data disk bytenr %llu nr %llu\n",
			       btrfs_file_extent_disk_bytenr(l, fi),
			       btrfs_file_extent_disk_num_bytes(l, fi));
			pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
			       btrfs_file_extent_offset(l, fi),
			       btrfs_file_extent_num_bytes(l, fi),
			       btrfs_file_extent_ram_bytes(l, fi));
			break;
		case BTRFS_EXTENT_REF_V0_KEY:
			btrfs_print_v0_err(fs_info);
			btrfs_handle_fs_error(fs_info, -EINVAL, NULL);
			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_disk_block_group_used(l, bi),
				btrfs_disk_block_group_chunk_objectid(l, bi),
				btrfs_disk_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_nr(l, i));
			break;
		};
	}
}

void btrfs_print_tree(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 (%llu %u %llu) block %llu gen %llu\n",
		       i, key.objectid, key.type, key.offset,
		       btrfs_node_blockptr(c, i),
		       btrfs_node_ptr_generation(c, i));
	}
	if (!follow)
		return;
	for (i = 0; i < nr; i++) {
		struct btrfs_key first_key;
		struct extent_buffer *next;

		btrfs_node_key_to_cpu(c, &first_key, i);
		next = read_tree_block(fs_info, btrfs_node_blockptr(c, i),
				       btrfs_node_ptr_generation(c, i),
				       level - 1, &first_key);
		if (IS_ERR(next)) {
			continue;
		} else 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);
	}
}
Commit	Line	Data
c1d7c514	1	// SPDX-License-Identifier: GPL-2.0
6cbd5570 CM	2	/*
6cbd5570 CM	3	* Copyright (C) 2007 Oracle. All rights reserved.
6cbd5570 CM	4	*/
6cbd5570 CM	5
5de08d7d CM	6	#include "ctree.h"
5de08d7d CM	7	#include "disk-io.h"
35b7e476	8	#include "print-tree.h"
5de08d7d	9
0b86a832 CM	10	static void print_chunk(struct extent_buffer eb, struct btrfs_chunk chunk)
	11	{
	12	int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
	13	int i;
62e85577	14	pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
c1c9ff7c GU	15	btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
c1c9ff7c GU	16	btrfs_chunk_type(eb, chunk), num_stripes);
0b86a832	17	for (i = 0 ; i < num_stripes ; i++) {
62e85577	18	pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
c1c9ff7c GU	19	btrfs_stripe_devid_nr(eb, chunk, i),
c1c9ff7c GU	20	btrfs_stripe_offset_nr(eb, chunk, i));
0b86a832 CM	21	}
	22	}
	23	static void print_dev_item(struct extent_buffer *eb,
	24	struct btrfs_dev_item *dev_item)
	25	{
62e85577	26	pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
c1c9ff7c GU	27	btrfs_device_id(eb, dev_item),
	28	btrfs_device_total_bytes(eb, dev_item),
	29	btrfs_device_bytes_used(eb, dev_item));
0b86a832	30	}
5d4f98a2 YZ	31	static void print_extent_data_ref(struct extent_buffer *eb,
	32	struct btrfs_extent_data_ref *ref)
	33	{
64ecdb64	34	pr_cont("extent data backref root %llu objectid %llu offset %llu count %u\n",
c1c9ff7c GU	35	btrfs_extent_data_ref_root(eb, ref),
	36	btrfs_extent_data_ref_objectid(eb, ref),
	37	btrfs_extent_data_ref_offset(eb, ref),
5d4f98a2 YZ	38	btrfs_extent_data_ref_count(eb, ref));
	39	}
	40
be2c765d	41	static void print_extent_item(struct extent_buffer *eb, int slot, int type)
5d4f98a2 YZ	42	{
	43	struct btrfs_extent_item *ei;
	44	struct btrfs_extent_inline_ref *iref;
	45	struct btrfs_extent_data_ref *dref;
	46	struct btrfs_shared_data_ref *sref;
	47	struct btrfs_disk_key key;
	48	unsigned long end;
	49	unsigned long ptr;
5d4f98a2 YZ	50	u32 item_size = btrfs_item_size_nr(eb, slot);
	51	u64 flags;
	52	u64 offset;
64ecdb64	53	int ref_index = 0;
5d4f98a2	54
6d8ff4e4	55	if (unlikely(item_size < sizeof(*ei))) {
ba3c2b19 NB	56	btrfs_print_v0_err(eb->fs_info);
	57	btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL);
	58	}
5d4f98a2 YZ	59
	60	ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
	61	flags = btrfs_extent_flags(eb, ei);
	62
62e85577	63	pr_info("\t\textent refs %llu gen %llu flags %llu\n",
c1c9ff7c GU	64	btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
c1c9ff7c GU	65	flags);
5d4f98a2	66
be2c765d JB	67	if ((type == BTRFS_EXTENT_ITEM_KEY) &&
be2c765d JB	68	flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
5d4f98a2 YZ	69	struct btrfs_tree_block_info *info;
	70	info = (struct btrfs_tree_block_info *)(ei + 1);
	71	btrfs_tree_block_key(eb, info, &key);
62e85577	72	pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
c1c9ff7c GU	73	btrfs_disk_key_objectid(&key), key.type,
c1c9ff7c GU	74	btrfs_disk_key_offset(&key),
5d4f98a2 YZ	75	btrfs_tree_block_level(eb, info));
	76	iref = (struct btrfs_extent_inline_ref *)(info + 1);
	77	} else {
	78	iref = (struct btrfs_extent_inline_ref *)(ei + 1);
	79	}
	80
	81	ptr = (unsigned long)iref;
	82	end = (unsigned long)ei + item_size;
	83	while (ptr < end) {
	84	iref = (struct btrfs_extent_inline_ref *)ptr;
	85	type = btrfs_extent_inline_ref_type(eb, iref);
	86	offset = btrfs_extent_inline_ref_offset(eb, iref);
64ecdb64	87	pr_info("\t\tref#%d: ", ref_index++);
5d4f98a2 YZ	88	switch (type) {
5d4f98a2 YZ	89	case BTRFS_TREE_BLOCK_REF_KEY:
64ecdb64	90	pr_cont("tree block backref root %llu\n", offset);
5d4f98a2 YZ	91	break;
5d4f98a2 YZ	92	case BTRFS_SHARED_BLOCK_REF_KEY:
64ecdb64 LB	93	pr_cont("shared block backref parent %llu\n", offset);
	94	/*
	95	* offset is supposed to be a tree block which
	96	* must be aligned to nodesize.
	97	*/
	98	if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
	99	pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
	100	offset, (unsigned long long)eb->fs_info->nodesize);
5d4f98a2 YZ	101	break;
	102	case BTRFS_EXTENT_DATA_REF_KEY:
	103	dref = (struct btrfs_extent_data_ref *)(&iref->offset);
	104	print_extent_data_ref(eb, dref);
	105	break;
	106	case BTRFS_SHARED_DATA_REF_KEY:
	107	sref = (struct btrfs_shared_data_ref *)(iref + 1);
64ecdb64	108	pr_cont("shared data backref parent %llu count %u\n",
c1c9ff7c	109	offset, btrfs_shared_data_ref_count(eb, sref));
64ecdb64 LB	110	/*
	111	* offset is supposed to be a tree block which
	112	* must be aligned to nodesize.
	113	*/
	114	if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
	115	pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
	116	offset, (unsigned long long)eb->fs_info->nodesize);
5d4f98a2 YZ	117	break;
5d4f98a2 YZ	118	default:
64ecdb64	119	pr_cont("(extent %llu has INVALID ref type %d)\n",
07638ea5 LB	120	eb->start, type);
07638ea5 LB	121	return;
5d4f98a2 YZ	122	}
	123	ptr += btrfs_extent_inline_ref_size(type);
	124	}
	125	WARN_ON(ptr > end);
	126	}
	127
8f8ae8e2 SB	128	static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
	129	u32 item_size)
	130	{
	131	if (!IS_ALIGNED(item_size, sizeof(u64))) {
efe120a0	132	pr_warn("BTRFS: uuid item with illegal size %lu!\n",
8f8ae8e2 SB	133	(unsigned long)item_size);
	134	return;
	135	}
	136	while (item_size) {
	137	__le64 subvol_id;
	138
	139	read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
62e85577	140	pr_info("\t\tsubvol_id %llu\n",
8f8ae8e2 SB	141	(unsigned long long)le64_to_cpu(subvol_id));
	142	item_size -= sizeof(u64);
	143	offset += sizeof(u64);
	144	}
	145	}
	146
b5459936 QW	147	/*
	148	* Helper to output refs and locking status of extent buffer. Useful to debug
	149	* race condition related problems.
	150	*/
	151	static void print_eb_refs_lock(struct extent_buffer *eb)
	152	{
	153	#ifdef CONFIG_BTRFS_DEBUG
	154	btrfs_info(eb->fs_info,
	155	"refs %u lock (w:%d r:%d bw:%d br:%d sw:%d sr:%d) lock_owner %u current %u",
	156	atomic_read(&eb->refs), atomic_read(&eb->write_locks),
	157	atomic_read(&eb->read_locks),
	158	atomic_read(&eb->blocking_writers),
	159	atomic_read(&eb->blocking_readers),
	160	atomic_read(&eb->spinning_writers),
	161	atomic_read(&eb->spinning_readers),
	162	eb->lock_owner, current->pid);
	163	#endif
	164	}
	165
a4f78750	166	void btrfs_print_leaf(struct extent_buffer *l)
5de08d7d	167	{
a4f78750	168	struct btrfs_fs_info *fs_info;
5de08d7d	169	int i;
068132ba	170	u32 type, nr;
0783fcfc	171	struct btrfs_item *item;
3768f368	172	struct btrfs_root_item *ri;
1d4f6404	173	struct btrfs_dir_item *di;
293ffd5f	174	struct btrfs_inode_item *ii;
9078a3e1	175	struct btrfs_block_group_item *bi;
8c2383c3	176	struct btrfs_file_extent_item *fi;
5d4f98a2 YZ	177	struct btrfs_extent_data_ref *dref;
	178	struct btrfs_shared_data_ref *sref;
	179	struct btrfs_dev_extent *dev_extent;
5f39d397 CM	180	struct btrfs_key key;
5f39d397 CM	181	struct btrfs_key found_key;
1d4f6404	182
068132ba DB	183	if (!l)
	184	return;
	185
a4f78750	186	fs_info = l->fs_info;
068132ba DB	187	nr = btrfs_header_nritems(l);
068132ba DB	188
c0872323 QW	189	btrfs_info(fs_info,
	190	"leaf %llu gen %llu total ptrs %d free space %d owner %llu",
	191	btrfs_header_bytenr(l), btrfs_header_generation(l), nr,
	192	btrfs_leaf_free_space(fs_info, l), btrfs_header_owner(l));
b5459936	193	print_eb_refs_lock(l);
5de08d7d	194	for (i = 0 ; i < nr ; i++) {
dd3cc16b	195	item = btrfs_item_nr(i);
5f39d397	196	btrfs_item_key_to_cpu(l, &key, i);
962a298f	197	type = key.type;
62e85577	198	pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
c1c9ff7c	199	i, key.objectid, type, key.offset,
5f39d397	200	btrfs_item_offset(l, item), btrfs_item_size(l, item));
62e2749e CM	201	switch (type) {
62e2749e CM	202	case BTRFS_INODE_ITEM_KEY:
293ffd5f	203	ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
62e85577	204	pr_info("\t\tinode generation %llu size %llu mode %o\n",
d397712b	205	btrfs_inode_generation(l, ii),
c1c9ff7c	206	btrfs_inode_size(l, ii),
5f39d397	207	btrfs_inode_mode(l, ii));
62e2749e CM	208	break;
62e2749e CM	209	case BTRFS_DIR_ITEM_KEY:
1d4f6404	210	di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
5f39d397	211	btrfs_dir_item_key_to_cpu(l, di, &found_key);
62e85577	212	pr_info("\t\tdir oid %llu type %u\n",
c1c9ff7c	213	found_key.objectid,
5f39d397	214	btrfs_dir_type(l, di));
62e2749e CM	215	break;
	216	case BTRFS_ROOT_ITEM_KEY:
	217	ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
62e85577	218	pr_info("\t\troot data bytenr %llu refs %u\n",
d397712b	219	btrfs_disk_root_bytenr(l, ri),
5f39d397	220	btrfs_disk_root_refs(l, ri));
62e2749e CM	221	break;
62e2749e CM	222	case BTRFS_EXTENT_ITEM_KEY:
be2c765d JB	223	case BTRFS_METADATA_ITEM_KEY:
be2c765d JB	224	print_extent_item(l, i, type);
62e2749e	225	break;
5d4f98a2	226	case BTRFS_TREE_BLOCK_REF_KEY:
62e85577	227	pr_info("\t\ttree block backref\n");
5d4f98a2 YZ	228	break;
5d4f98a2 YZ	229	case BTRFS_SHARED_BLOCK_REF_KEY:
62e85577	230	pr_info("\t\tshared block backref\n");
5d4f98a2 YZ	231	break;
	232	case BTRFS_EXTENT_DATA_REF_KEY:
	233	dref = btrfs_item_ptr(l, i,
	234	struct btrfs_extent_data_ref);
	235	print_extent_data_ref(l, dref);
	236	break;
	237	case BTRFS_SHARED_DATA_REF_KEY:
	238	sref = btrfs_item_ptr(l, i,
	239	struct btrfs_shared_data_ref);
62e85577	240	pr_info("\t\tshared data backref count %u\n",
5d4f98a2	241	btrfs_shared_data_ref_count(l, sref));
7bb86316	242	break;
8c2383c3 CM	243	case BTRFS_EXTENT_DATA_KEY:
	244	fi = btrfs_item_ptr(l, i,
	245	struct btrfs_file_extent_item);
5f39d397	246	if (btrfs_file_extent_type(l, fi) ==
8c2383c3	247	BTRFS_FILE_EXTENT_INLINE) {
e41ca589 QW	248	pr_info("\t\tinline extent data size %llu\n",
e41ca589 QW	249	btrfs_file_extent_ram_bytes(l, fi));
8c2383c3 CM	250	break;
8c2383c3 CM	251	}
62e85577	252	pr_info("\t\textent data disk bytenr %llu nr %llu\n",
d397712b	253	btrfs_file_extent_disk_bytenr(l, fi),
d397712b	254	btrfs_file_extent_disk_num_bytes(l, fi));
62e85577	255	pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
d397712b	256	btrfs_file_extent_offset(l, fi),
d397712b	257	btrfs_file_extent_num_bytes(l, fi),
d397712b	258	btrfs_file_extent_ram_bytes(l, fi));
8c2383c3	259	break;
5d4f98a2	260	case BTRFS_EXTENT_REF_V0_KEY:
ba3c2b19 NB	261	btrfs_print_v0_err(fs_info);
ba3c2b19 NB	262	btrfs_handle_fs_error(fs_info, -EINVAL, NULL);
333e8105	263	break;
9078a3e1 CM	264	case BTRFS_BLOCK_GROUP_ITEM_KEY:
	265	bi = btrfs_item_ptr(l, i,
	266	struct btrfs_block_group_item);
555ba411 LB	267	pr_info(
	268	"\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
	269	btrfs_disk_block_group_used(l, bi),
	270	btrfs_disk_block_group_chunk_objectid(l, bi),
	271	btrfs_disk_block_group_flags(l, bi));
62e2749e	272	break;
0b86a832	273	case BTRFS_CHUNK_ITEM_KEY:
d397712b CM	274	print_chunk(l, btrfs_item_ptr(l, i,
d397712b CM	275	struct btrfs_chunk));
0b86a832 CM	276	break;
	277	case BTRFS_DEV_ITEM_KEY:
	278	print_dev_item(l, btrfs_item_ptr(l, i,
	279	struct btrfs_dev_item));
	280	break;
	281	case BTRFS_DEV_EXTENT_KEY:
	282	dev_extent = btrfs_item_ptr(l, i,
	283	struct btrfs_dev_extent);
62e85577	284	pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
e17cade2	285	btrfs_dev_extent_chunk_tree(l, dev_extent),
e17cade2	286	btrfs_dev_extent_chunk_objectid(l, dev_extent),
e17cade2	287	btrfs_dev_extent_chunk_offset(l, dev_extent),
e17cade2	288	btrfs_dev_extent_length(l, dev_extent));
0e636027	289	break;
585a3d0d	290	case BTRFS_PERSISTENT_ITEM_KEY:
62e85577	291	pr_info("\t\tpersistent item objectid %llu offset %llu\n",
585a3d0d DS	292	key.objectid, key.offset);
	293	switch (key.objectid) {
	294	case BTRFS_DEV_STATS_OBJECTID:
62e85577	295	pr_info("\t\tdevice stats\n");
585a3d0d DS	296	break;
585a3d0d DS	297	default:
62e85577	298	pr_info("\t\tunknown persistent item\n");
585a3d0d	299	}
733f4fbb	300	break;
9f07e1d7	301	case BTRFS_TEMPORARY_ITEM_KEY:
62e85577	302	pr_info("\t\ttemporary item objectid %llu offset %llu\n",
9f07e1d7 DS	303	key.objectid, key.offset);
	304	switch (key.objectid) {
	305	case BTRFS_BALANCE_OBJECTID:
62e85577	306	pr_info("\t\tbalance status\n");
9f07e1d7 DS	307	break;
9f07e1d7 DS	308	default:
62e85577	309	pr_info("\t\tunknown temporary item\n");
9f07e1d7 DS	310	}
9f07e1d7 DS	311	break;
a2bff640	312	case BTRFS_DEV_REPLACE_KEY:
62e85577	313	pr_info("\t\tdev replace\n");
a2bff640	314	break;
8f8ae8e2 SB	315	case BTRFS_UUID_KEY_SUBVOL:
	316	case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
	317	print_uuid_item(l, btrfs_item_ptr_offset(l, i),
	318	btrfs_item_size_nr(l, i));
	319	break;
62e2749e	320	};
5de08d7d CM	321	}
5de08d7d CM	322	}
e20d96d6	323
c0872323	324	void btrfs_print_tree(struct extent_buffer *c, bool follow)
5de08d7d	325	{
abe60ba4	326	struct btrfs_fs_info *fs_info;
e17cade2	327	int i; u32 nr;
5f39d397	328	struct btrfs_key key;
db94535d	329	int level;
5de08d7d	330
5f39d397	331	if (!c)
5de08d7d	332	return;
abe60ba4	333	fs_info = c->fs_info;
5f39d397	334	nr = btrfs_header_nritems(c);
db94535d CM	335	level = btrfs_header_level(c);
db94535d CM	336	if (level == 0) {
a4f78750	337	btrfs_print_leaf(c);
5de08d7d CM	338	return;
5de08d7d CM	339	}
0b246afa	340	btrfs_info(fs_info,
c0872323 QW	341	"node %llu level %d gen %llu total ptrs %d free spc %u owner %llu",
	342	btrfs_header_bytenr(c), level, btrfs_header_generation(c),
	343	nr, (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr,
	344	btrfs_header_owner(c));
b5459936	345	print_eb_refs_lock(c);
5de08d7d	346	for (i = 0; i < nr; i++) {
5f39d397	347	btrfs_node_key_to_cpu(c, &key, i);
c0872323	348	pr_info("\tkey %d (%llu %u %llu) block %llu gen %llu\n",
c1c9ff7c	349	i, key.objectid, key.type, key.offset,
c0872323 QW	350	btrfs_node_blockptr(c, i),
c0872323 QW	351	btrfs_node_ptr_generation(c, i));
5de08d7d	352	}
c0872323 QW	353	if (!follow)
c0872323 QW	354	return;
5de08d7d	355	for (i = 0; i < nr; i++) {
581c1760 QW	356	struct btrfs_key first_key;
	357	struct extent_buffer *next;
	358
	359	btrfs_node_key_to_cpu(c, &first_key, i);
	360	next = read_tree_block(fs_info, btrfs_node_blockptr(c, i),
	361	btrfs_node_ptr_generation(c, i),
	362	level - 1, &first_key);
a42cbec9 LB	363	if (IS_ERR(next)) {
	364	continue;
	365	} else if (!extent_buffer_uptodate(next)) {
	366	free_extent_buffer(next);
	367	continue;
	368	}
	369
7518a238	370	if (btrfs_is_leaf(next) &&
c271b492	371	level != 1)
5de08d7d	372	BUG();
5f39d397	373	if (btrfs_header_level(next) !=
c271b492	374	level - 1)
5de08d7d	375	BUG();
c0872323	376	btrfs_print_tree(next, follow);
5f39d397	377	free_extent_buffer(next);
5de08d7d	378	}
5de08d7d	379	}