217 строки
7.2 KiB
C
217 строки
7.2 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include "ctree.h"
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#include "disk-io.h"
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#include "print-tree.h"
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static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
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{
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int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
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int i;
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printk(KERN_INFO "\t\tchunk length %llu owner %llu type %llu "
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"num_stripes %d\n",
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(unsigned long long)btrfs_chunk_length(eb, chunk),
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(unsigned long long)btrfs_chunk_owner(eb, chunk),
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(unsigned long long)btrfs_chunk_type(eb, chunk),
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num_stripes);
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for (i = 0 ; i < num_stripes ; i++) {
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printk(KERN_INFO "\t\t\tstripe %d devid %llu offset %llu\n", i,
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(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
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(unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
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}
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}
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static void print_dev_item(struct extent_buffer *eb,
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struct btrfs_dev_item *dev_item)
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{
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printk(KERN_INFO "\t\tdev item devid %llu "
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"total_bytes %llu bytes used %llu\n",
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(unsigned long long)btrfs_device_id(eb, dev_item),
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(unsigned long long)btrfs_device_total_bytes(eb, dev_item),
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(unsigned long long)btrfs_device_bytes_used(eb, dev_item));
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}
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void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
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{
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int i;
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u32 nr = btrfs_header_nritems(l);
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struct btrfs_item *item;
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struct btrfs_extent_item *ei;
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struct btrfs_root_item *ri;
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struct btrfs_dir_item *di;
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struct btrfs_inode_item *ii;
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struct btrfs_block_group_item *bi;
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struct btrfs_file_extent_item *fi;
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struct btrfs_key key;
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struct btrfs_key found_key;
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struct btrfs_extent_ref *ref;
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struct btrfs_dev_extent *dev_extent;
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u32 type;
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printk(KERN_INFO "leaf %llu total ptrs %d free space %d\n",
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(unsigned long long)btrfs_header_bytenr(l), nr,
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btrfs_leaf_free_space(root, l));
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for (i = 0 ; i < nr ; i++) {
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item = btrfs_item_nr(l, i);
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btrfs_item_key_to_cpu(l, &key, i);
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type = btrfs_key_type(&key);
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printk(KERN_INFO "\titem %d key (%llu %x %llu) itemoff %d "
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"itemsize %d\n",
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i,
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(unsigned long long)key.objectid, type,
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(unsigned long long)key.offset,
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btrfs_item_offset(l, item), btrfs_item_size(l, item));
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switch (type) {
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case BTRFS_INODE_ITEM_KEY:
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ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
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printk(KERN_INFO "\t\tinode generation %llu size %llu "
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"mode %o\n",
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(unsigned long long)
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btrfs_inode_generation(l, ii),
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(unsigned long long)btrfs_inode_size(l, ii),
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btrfs_inode_mode(l, ii));
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break;
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case BTRFS_DIR_ITEM_KEY:
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di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
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btrfs_dir_item_key_to_cpu(l, di, &found_key);
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printk(KERN_INFO "\t\tdir oid %llu type %u\n",
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(unsigned long long)found_key.objectid,
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btrfs_dir_type(l, di));
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break;
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case BTRFS_ROOT_ITEM_KEY:
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ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
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printk(KERN_INFO "\t\troot data bytenr %llu refs %u\n",
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(unsigned long long)
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btrfs_disk_root_bytenr(l, ri),
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btrfs_disk_root_refs(l, ri));
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break;
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case BTRFS_EXTENT_ITEM_KEY:
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ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
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printk(KERN_INFO "\t\textent data refs %u\n",
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btrfs_extent_refs(l, ei));
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break;
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case BTRFS_EXTENT_REF_KEY:
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ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref);
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printk(KERN_INFO "\t\textent back ref root %llu "
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"gen %llu owner %llu num_refs %lu\n",
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(unsigned long long)btrfs_ref_root(l, ref),
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(unsigned long long)btrfs_ref_generation(l, ref),
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(unsigned long long)btrfs_ref_objectid(l, ref),
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(unsigned long)btrfs_ref_num_refs(l, ref));
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break;
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case BTRFS_EXTENT_DATA_KEY:
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fi = btrfs_item_ptr(l, i,
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struct btrfs_file_extent_item);
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if (btrfs_file_extent_type(l, fi) ==
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BTRFS_FILE_EXTENT_INLINE) {
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printk(KERN_INFO "\t\tinline extent data "
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"size %u\n",
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btrfs_file_extent_inline_len(l, fi));
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break;
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}
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printk(KERN_INFO "\t\textent data disk bytenr %llu "
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"nr %llu\n",
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(unsigned long long)
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btrfs_file_extent_disk_bytenr(l, fi),
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(unsigned long long)
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btrfs_file_extent_disk_num_bytes(l, fi));
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printk(KERN_INFO "\t\textent data offset %llu "
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"nr %llu ram %llu\n",
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(unsigned long long)
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btrfs_file_extent_offset(l, fi),
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(unsigned long long)
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btrfs_file_extent_num_bytes(l, fi),
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(unsigned long long)
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btrfs_file_extent_ram_bytes(l, fi));
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break;
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case BTRFS_BLOCK_GROUP_ITEM_KEY:
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bi = btrfs_item_ptr(l, i,
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struct btrfs_block_group_item);
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printk(KERN_INFO "\t\tblock group used %llu\n",
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(unsigned long long)
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btrfs_disk_block_group_used(l, bi));
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break;
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case BTRFS_CHUNK_ITEM_KEY:
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print_chunk(l, btrfs_item_ptr(l, i,
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struct btrfs_chunk));
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break;
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case BTRFS_DEV_ITEM_KEY:
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print_dev_item(l, btrfs_item_ptr(l, i,
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struct btrfs_dev_item));
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break;
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case BTRFS_DEV_EXTENT_KEY:
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dev_extent = btrfs_item_ptr(l, i,
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struct btrfs_dev_extent);
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printk(KERN_INFO "\t\tdev extent chunk_tree %llu\n"
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"\t\tchunk objectid %llu chunk offset %llu "
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"length %llu\n",
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(unsigned long long)
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btrfs_dev_extent_chunk_tree(l, dev_extent),
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(unsigned long long)
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btrfs_dev_extent_chunk_objectid(l, dev_extent),
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(unsigned long long)
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btrfs_dev_extent_chunk_offset(l, dev_extent),
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(unsigned long long)
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btrfs_dev_extent_length(l, dev_extent));
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};
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}
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}
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void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c)
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{
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int i; u32 nr;
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struct btrfs_key key;
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int level;
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if (!c)
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return;
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nr = btrfs_header_nritems(c);
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level = btrfs_header_level(c);
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if (level == 0) {
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btrfs_print_leaf(root, c);
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return;
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}
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printk(KERN_INFO "node %llu level %d total ptrs %d free spc %u\n",
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(unsigned long long)btrfs_header_bytenr(c),
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btrfs_header_level(c), nr,
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(u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
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for (i = 0; i < nr; i++) {
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btrfs_node_key_to_cpu(c, &key, i);
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printk(KERN_INFO "\tkey %d (%llu %u %llu) block %llu\n",
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i,
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(unsigned long long)key.objectid,
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key.type,
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(unsigned long long)key.offset,
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(unsigned long long)btrfs_node_blockptr(c, i));
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}
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for (i = 0; i < nr; i++) {
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struct extent_buffer *next = read_tree_block(root,
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btrfs_node_blockptr(c, i),
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btrfs_level_size(root, level - 1),
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btrfs_node_ptr_generation(c, i));
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if (btrfs_is_leaf(next) &&
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btrfs_header_level(c) != 1)
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BUG();
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if (btrfs_header_level(next) !=
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btrfs_header_level(c) - 1)
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BUG();
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btrfs_print_tree(root, next);
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free_extent_buffer(next);
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}
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}
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