[mirror_ubuntu-artful-kernel.git] / fs / btrfs / print-tree.c

/*
 * 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 "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_info("\t\textent 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;

	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);
		pr_info("\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);

	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);
		switch (type) {
		case BTRFS_TREE_BLOCK_REF_KEY:
			pr_info("\t\ttree block backref root %llu\n", offset);
			break;
		case BTRFS_SHARED_BLOCK_REF_KEY:
			pr_info("\t\tshared block backref parent %llu\n", offset);
			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_info("\t\tshared data backref parent %llu count %u\n",
			       offset, btrfs_shared_data_ref_count(eb, sref));
			break;
		default:
			BUG();
		}
		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);
	printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
		btrfs_ref_root_v0(eb, ref0),
		btrfs_ref_generation_v0(eb, ref0),
		btrfs_ref_objectid_v0(eb, ref0),
		(unsigned long)btrfs_ref_count_v0(eb, ref0));
}
#endif

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);
	}
}

void btrfs_print_leaf(struct btrfs_fs_info *fs_info, struct extent_buffer *l)
{
	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;

	nr = btrfs_header_nritems(l);

	btrfs_info(fs_info, "leaf %llu total ptrs %d free space %d",
		   btrfs_header_bytenr(l), nr,
		   btrfs_leaf_free_space(fs_info, 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 %u\n",
				       btrfs_file_extent_inline_len(l, i, 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:
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
			print_extent_ref_v0(l, i);
#else
			BUG();
#endif
			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 btrfs_fs_info *fs_info, struct extent_buffer *c)
{
	int i; u32 nr;
	struct btrfs_key key;
	int level;

	if (!c)
		return;
	nr = btrfs_header_nritems(c);
	level = btrfs_header_level(c);
	if (level == 0) {
		btrfs_print_leaf(fs_info, c);
		return;
	}
	btrfs_info(fs_info,
		   "node %llu level %d total ptrs %d free spc %u",
		   btrfs_header_bytenr(c), level, nr,
		   (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr);
	for (i = 0; i < nr; i++) {
		btrfs_node_key_to_cpu(c, &key, i);
		pr_info("\tkey %d (%llu %u %llu) block %llu\n",
		       i, key.objectid, key.type, key.offset,
		       btrfs_node_blockptr(c, i));
	}
	for (i = 0; i < nr; i++) {
		struct extent_buffer *next = read_tree_block(fs_info,
					btrfs_node_blockptr(c, i),
					btrfs_node_ptr_generation(c, i));
		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(fs_info, next);
		free_extent_buffer(next);
	}
}
Commit	Line	Data
6cbd5570 CM	1	/*
	2	* Copyright (C) 2007 Oracle. All rights reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public
	6	* License v2 as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public
	14	* License along with this program; if not, write to the
	15	* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	16	* Boston, MA 021110-1307, USA.
	17	*/
	18
5de08d7d CM	19	#include "ctree.h"
5de08d7d CM	20	#include "disk-io.h"
35b7e476	21	#include "print-tree.h"
5de08d7d	22
0b86a832 CM	23	static void print_chunk(struct extent_buffer eb, struct btrfs_chunk chunk)
	24	{
	25	int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
	26	int i;
62e85577	27	pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
c1c9ff7c GU	28	btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
c1c9ff7c GU	29	btrfs_chunk_type(eb, chunk), num_stripes);
0b86a832	30	for (i = 0 ; i < num_stripes ; i++) {
62e85577	31	pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
c1c9ff7c GU	32	btrfs_stripe_devid_nr(eb, chunk, i),
c1c9ff7c GU	33	btrfs_stripe_offset_nr(eb, chunk, i));
0b86a832 CM	34	}
	35	}
	36	static void print_dev_item(struct extent_buffer *eb,
	37	struct btrfs_dev_item *dev_item)
	38	{
62e85577	39	pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
c1c9ff7c GU	40	btrfs_device_id(eb, dev_item),
	41	btrfs_device_total_bytes(eb, dev_item),
	42	btrfs_device_bytes_used(eb, dev_item));
0b86a832	43	}
5d4f98a2 YZ	44	static void print_extent_data_ref(struct extent_buffer *eb,
	45	struct btrfs_extent_data_ref *ref)
	46	{
62e85577	47	pr_info("\t\textent data backref root %llu objectid %llu offset %llu count %u\n",
c1c9ff7c GU	48	btrfs_extent_data_ref_root(eb, ref),
	49	btrfs_extent_data_ref_objectid(eb, ref),
	50	btrfs_extent_data_ref_offset(eb, ref),
5d4f98a2 YZ	51	btrfs_extent_data_ref_count(eb, ref));
	52	}
	53
be2c765d	54	static void print_extent_item(struct extent_buffer *eb, int slot, int type)
5d4f98a2 YZ	55	{
	56	struct btrfs_extent_item *ei;
	57	struct btrfs_extent_inline_ref *iref;
	58	struct btrfs_extent_data_ref *dref;
	59	struct btrfs_shared_data_ref *sref;
	60	struct btrfs_disk_key key;
	61	unsigned long end;
	62	unsigned long ptr;
5d4f98a2 YZ	63	u32 item_size = btrfs_item_size_nr(eb, slot);
	64	u64 flags;
	65	u64 offset;
	66
	67	if (item_size < sizeof(*ei)) {
	68	#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
	69	struct btrfs_extent_item_v0 *ei0;
	70	BUG_ON(item_size != sizeof(*ei0));
	71	ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
62e85577	72	pr_info("\t\textent refs %u\n",
5d4f98a2 YZ	73	btrfs_extent_refs_v0(eb, ei0));
	74	return;
	75	#else
	76	BUG();
	77	#endif
	78	}
	79
	80	ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
	81	flags = btrfs_extent_flags(eb, ei);
	82
62e85577	83	pr_info("\t\textent refs %llu gen %llu flags %llu\n",
c1c9ff7c GU	84	btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
c1c9ff7c GU	85	flags);
5d4f98a2	86
be2c765d JB	87	if ((type == BTRFS_EXTENT_ITEM_KEY) &&
be2c765d JB	88	flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
5d4f98a2 YZ	89	struct btrfs_tree_block_info *info;
	90	info = (struct btrfs_tree_block_info *)(ei + 1);
	91	btrfs_tree_block_key(eb, info, &key);
62e85577	92	pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
c1c9ff7c GU	93	btrfs_disk_key_objectid(&key), key.type,
c1c9ff7c GU	94	btrfs_disk_key_offset(&key),
5d4f98a2 YZ	95	btrfs_tree_block_level(eb, info));
	96	iref = (struct btrfs_extent_inline_ref *)(info + 1);
	97	} else {
	98	iref = (struct btrfs_extent_inline_ref *)(ei + 1);
	99	}
	100
	101	ptr = (unsigned long)iref;
	102	end = (unsigned long)ei + item_size;
	103	while (ptr < end) {
	104	iref = (struct btrfs_extent_inline_ref *)ptr;
	105	type = btrfs_extent_inline_ref_type(eb, iref);
	106	offset = btrfs_extent_inline_ref_offset(eb, iref);
	107	switch (type) {
	108	case BTRFS_TREE_BLOCK_REF_KEY:
62e85577	109	pr_info("\t\ttree block backref root %llu\n", offset);
5d4f98a2 YZ	110	break;
5d4f98a2 YZ	111	case BTRFS_SHARED_BLOCK_REF_KEY:
62e85577	112	pr_info("\t\tshared block backref parent %llu\n", offset);
5d4f98a2 YZ	113	break;
	114	case BTRFS_EXTENT_DATA_REF_KEY:
	115	dref = (struct btrfs_extent_data_ref *)(&iref->offset);
	116	print_extent_data_ref(eb, dref);
	117	break;
	118	case BTRFS_SHARED_DATA_REF_KEY:
	119	sref = (struct btrfs_shared_data_ref *)(iref + 1);
62e85577	120	pr_info("\t\tshared data backref parent %llu count %u\n",
c1c9ff7c	121	offset, btrfs_shared_data_ref_count(eb, sref));
5d4f98a2 YZ	122	break;
	123	default:
	124	BUG();
	125	}
	126	ptr += btrfs_extent_inline_ref_size(type);
	127	}
	128	WARN_ON(ptr > end);
	129	}
	130
	131	#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
	132	static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
	133	{
	134	struct btrfs_extent_ref_v0 *ref0;
	135
	136	ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
5d163e0e	137	printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
c1c9ff7c GU	138	btrfs_ref_root_v0(eb, ref0),
	139	btrfs_ref_generation_v0(eb, ref0),
	140	btrfs_ref_objectid_v0(eb, ref0),
5d4f98a2 YZ	141	(unsigned long)btrfs_ref_count_v0(eb, ref0));
	142	}
	143	#endif
	144
8f8ae8e2 SB	145	static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
	146	u32 item_size)
	147	{
	148	if (!IS_ALIGNED(item_size, sizeof(u64))) {
efe120a0	149	pr_warn("BTRFS: uuid item with illegal size %lu!\n",
8f8ae8e2 SB	150	(unsigned long)item_size);
	151	return;
	152	}
	153	while (item_size) {
	154	__le64 subvol_id;
	155
	156	read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
62e85577	157	pr_info("\t\tsubvol_id %llu\n",
8f8ae8e2 SB	158	(unsigned long long)le64_to_cpu(subvol_id));
	159	item_size -= sizeof(u64);
	160	offset += sizeof(u64);
	161	}
	162	}
	163
2ff7e61e	164	void btrfs_print_leaf(struct btrfs_fs_info fs_info, struct extent_buffer l)
5de08d7d CM	165	{
5de08d7d CM	166	int i;
068132ba	167	u32 type, nr;
0783fcfc	168	struct btrfs_item *item;
3768f368	169	struct btrfs_root_item *ri;
1d4f6404	170	struct btrfs_dir_item *di;
293ffd5f	171	struct btrfs_inode_item *ii;
9078a3e1	172	struct btrfs_block_group_item *bi;
8c2383c3	173	struct btrfs_file_extent_item *fi;
5d4f98a2 YZ	174	struct btrfs_extent_data_ref *dref;
	175	struct btrfs_shared_data_ref *sref;
	176	struct btrfs_dev_extent *dev_extent;
5f39d397 CM	177	struct btrfs_key key;
5f39d397 CM	178	struct btrfs_key found_key;
1d4f6404	179
068132ba DB	180	if (!l)
	181	return;
	182
	183	nr = btrfs_header_nritems(l);
	184
0b246afa	185	btrfs_info(fs_info, "leaf %llu total ptrs %d free space %d",
2ff7e61e JM	186	btrfs_header_bytenr(l), nr,
2ff7e61e JM	187	btrfs_leaf_free_space(fs_info, l));
5de08d7d	188	for (i = 0 ; i < nr ; i++) {
dd3cc16b	189	item = btrfs_item_nr(i);
5f39d397	190	btrfs_item_key_to_cpu(l, &key, i);
962a298f	191	type = key.type;
62e85577	192	pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
c1c9ff7c	193	i, key.objectid, type, key.offset,
5f39d397	194	btrfs_item_offset(l, item), btrfs_item_size(l, item));
62e2749e CM	195	switch (type) {
62e2749e CM	196	case BTRFS_INODE_ITEM_KEY:
293ffd5f	197	ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
62e85577	198	pr_info("\t\tinode generation %llu size %llu mode %o\n",
d397712b	199	btrfs_inode_generation(l, ii),
c1c9ff7c	200	btrfs_inode_size(l, ii),
5f39d397	201	btrfs_inode_mode(l, ii));
62e2749e CM	202	break;
62e2749e CM	203	case BTRFS_DIR_ITEM_KEY:
1d4f6404	204	di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
5f39d397	205	btrfs_dir_item_key_to_cpu(l, di, &found_key);
62e85577	206	pr_info("\t\tdir oid %llu type %u\n",
c1c9ff7c	207	found_key.objectid,
5f39d397	208	btrfs_dir_type(l, di));
62e2749e CM	209	break;
	210	case BTRFS_ROOT_ITEM_KEY:
	211	ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
62e85577	212	pr_info("\t\troot data bytenr %llu refs %u\n",
d397712b	213	btrfs_disk_root_bytenr(l, ri),
5f39d397	214	btrfs_disk_root_refs(l, ri));
62e2749e CM	215	break;
62e2749e CM	216	case BTRFS_EXTENT_ITEM_KEY:
be2c765d JB	217	case BTRFS_METADATA_ITEM_KEY:
be2c765d JB	218	print_extent_item(l, i, type);
62e2749e	219	break;
5d4f98a2	220	case BTRFS_TREE_BLOCK_REF_KEY:
62e85577	221	pr_info("\t\ttree block backref\n");
5d4f98a2 YZ	222	break;
5d4f98a2 YZ	223	case BTRFS_SHARED_BLOCK_REF_KEY:
62e85577	224	pr_info("\t\tshared block backref\n");
5d4f98a2 YZ	225	break;
	226	case BTRFS_EXTENT_DATA_REF_KEY:
	227	dref = btrfs_item_ptr(l, i,
	228	struct btrfs_extent_data_ref);
	229	print_extent_data_ref(l, dref);
	230	break;
	231	case BTRFS_SHARED_DATA_REF_KEY:
	232	sref = btrfs_item_ptr(l, i,
	233	struct btrfs_shared_data_ref);
62e85577	234	pr_info("\t\tshared data backref count %u\n",
5d4f98a2	235	btrfs_shared_data_ref_count(l, sref));
7bb86316	236	break;
8c2383c3 CM	237	case BTRFS_EXTENT_DATA_KEY:
	238	fi = btrfs_item_ptr(l, i,
	239	struct btrfs_file_extent_item);
5f39d397	240	if (btrfs_file_extent_type(l, fi) ==
8c2383c3	241	BTRFS_FILE_EXTENT_INLINE) {
62e85577	242	pr_info("\t\tinline extent data size %u\n",
514ac8ad	243	btrfs_file_extent_inline_len(l, i, fi));
8c2383c3 CM	244	break;
8c2383c3 CM	245	}
62e85577	246	pr_info("\t\textent data disk bytenr %llu nr %llu\n",
d397712b	247	btrfs_file_extent_disk_bytenr(l, fi),
d397712b	248	btrfs_file_extent_disk_num_bytes(l, fi));
62e85577	249	pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
d397712b	250	btrfs_file_extent_offset(l, fi),
d397712b	251	btrfs_file_extent_num_bytes(l, fi),
d397712b	252	btrfs_file_extent_ram_bytes(l, fi));
8c2383c3	253	break;
5d4f98a2 YZ	254	case BTRFS_EXTENT_REF_V0_KEY:
	255	#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
	256	print_extent_ref_v0(l, i);
	257	#else
	258	BUG();
	259	#endif
333e8105	260	break;
9078a3e1 CM	261	case BTRFS_BLOCK_GROUP_ITEM_KEY:
	262	bi = btrfs_item_ptr(l, i,
	263	struct btrfs_block_group_item);
555ba411 LB	264	pr_info(
	265	"\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
	266	btrfs_disk_block_group_used(l, bi),
	267	btrfs_disk_block_group_chunk_objectid(l, bi),
	268	btrfs_disk_block_group_flags(l, bi));
62e2749e	269	break;
0b86a832	270	case BTRFS_CHUNK_ITEM_KEY:
d397712b CM	271	print_chunk(l, btrfs_item_ptr(l, i,
d397712b CM	272	struct btrfs_chunk));
0b86a832 CM	273	break;
	274	case BTRFS_DEV_ITEM_KEY:
	275	print_dev_item(l, btrfs_item_ptr(l, i,
	276	struct btrfs_dev_item));
	277	break;
	278	case BTRFS_DEV_EXTENT_KEY:
	279	dev_extent = btrfs_item_ptr(l, i,
	280	struct btrfs_dev_extent);
62e85577	281	pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
e17cade2	282	btrfs_dev_extent_chunk_tree(l, dev_extent),
e17cade2	283	btrfs_dev_extent_chunk_objectid(l, dev_extent),
e17cade2	284	btrfs_dev_extent_chunk_offset(l, dev_extent),
e17cade2	285	btrfs_dev_extent_length(l, dev_extent));
0e636027	286	break;
585a3d0d	287	case BTRFS_PERSISTENT_ITEM_KEY:
62e85577	288	pr_info("\t\tpersistent item objectid %llu offset %llu\n",
585a3d0d DS	289	key.objectid, key.offset);
	290	switch (key.objectid) {
	291	case BTRFS_DEV_STATS_OBJECTID:
62e85577	292	pr_info("\t\tdevice stats\n");
585a3d0d DS	293	break;
585a3d0d DS	294	default:
62e85577	295	pr_info("\t\tunknown persistent item\n");
585a3d0d	296	}
733f4fbb	297	break;
9f07e1d7	298	case BTRFS_TEMPORARY_ITEM_KEY:
62e85577	299	pr_info("\t\ttemporary item objectid %llu offset %llu\n",
9f07e1d7 DS	300	key.objectid, key.offset);
	301	switch (key.objectid) {
	302	case BTRFS_BALANCE_OBJECTID:
62e85577	303	pr_info("\t\tbalance status\n");
9f07e1d7 DS	304	break;
9f07e1d7 DS	305	default:
62e85577	306	pr_info("\t\tunknown temporary item\n");
9f07e1d7 DS	307	}
9f07e1d7 DS	308	break;
a2bff640	309	case BTRFS_DEV_REPLACE_KEY:
62e85577	310	pr_info("\t\tdev replace\n");
a2bff640	311	break;
8f8ae8e2 SB	312	case BTRFS_UUID_KEY_SUBVOL:
	313	case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
	314	print_uuid_item(l, btrfs_item_ptr_offset(l, i),
	315	btrfs_item_size_nr(l, i));
	316	break;
62e2749e	317	};
5de08d7d CM	318	}
5de08d7d CM	319	}
e20d96d6	320
2ff7e61e	321	void btrfs_print_tree(struct btrfs_fs_info fs_info, struct extent_buffer c)
5de08d7d	322	{
e17cade2	323	int i; u32 nr;
5f39d397	324	struct btrfs_key key;
db94535d	325	int level;
5de08d7d	326
5f39d397	327	if (!c)
5de08d7d	328	return;
5f39d397	329	nr = btrfs_header_nritems(c);
db94535d CM	330	level = btrfs_header_level(c);
db94535d CM	331	if (level == 0) {
2ff7e61e	332	btrfs_print_leaf(fs_info, c);
5de08d7d CM	333	return;
5de08d7d CM	334	}
0b246afa	335	btrfs_info(fs_info,
5d163e0e JM	336	"node %llu level %d total ptrs %d free spc %u",
5d163e0e JM	337	btrfs_header_bytenr(c), level, nr,
0b246afa	338	(u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr);
5de08d7d	339	for (i = 0; i < nr; i++) {
5f39d397	340	btrfs_node_key_to_cpu(c, &key, i);
62e85577	341	pr_info("\tkey %d (%llu %u %llu) block %llu\n",
c1c9ff7c GU	342	i, key.objectid, key.type, key.offset,
c1c9ff7c GU	343	btrfs_node_blockptr(c, i));
5de08d7d CM	344	}
5de08d7d CM	345	for (i = 0; i < nr; i++) {
2ff7e61e	346	struct extent_buffer *next = read_tree_block(fs_info,
db94535d	347	btrfs_node_blockptr(c, i),
ca7a79ad	348	btrfs_node_ptr_generation(c, i));
a42cbec9 LB	349	if (IS_ERR(next)) {
	350	continue;
	351	} else if (!extent_buffer_uptodate(next)) {
	352	free_extent_buffer(next);
	353	continue;
	354	}
	355
7518a238	356	if (btrfs_is_leaf(next) &&
c271b492	357	level != 1)
5de08d7d	358	BUG();
5f39d397	359	if (btrfs_header_level(next) !=
c271b492	360	level - 1)
5de08d7d	361	BUG();
2ff7e61e	362	btrfs_print_tree(fs_info, next);
5f39d397	363	free_extent_buffer(next);
5de08d7d	364	}
5de08d7d	365	}