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113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
#include <linux/module.h>
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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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void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
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{
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int i;
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u32 nr = btrfs_header_nritems(&l->header);
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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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u32 type;
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printk("leaf %Lu total ptrs %d free space %d\n",
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btrfs_header_blocknr(&l->header), 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 = l->items + i;
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type = btrfs_disk_key_type(&item->key);
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printk("\titem %d key (%Lu %x %Lu) itemoff %d itemsize %d\n",
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i,
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btrfs_disk_key_objectid(&item->key),
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btrfs_disk_key_flags(&item->key),
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btrfs_disk_key_offset(&item->key),
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btrfs_item_offset(item),
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btrfs_item_size(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("\t\tinode generation %Lu size %Lu mode %o\n",
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btrfs_inode_generation(ii),
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btrfs_inode_size(ii),
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btrfs_inode_mode(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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printk("\t\tdir oid %Lu flags %u type %u\n",
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btrfs_disk_key_objectid(&di->location),
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btrfs_dir_flags(di),
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btrfs_dir_type(di));
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printk("\t\tname %.*s\n",
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btrfs_dir_name_len(di),(char *)(di + 1));
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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("\t\troot data blocknr %Lu refs %u\n",
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btrfs_root_blocknr(ri), btrfs_root_refs(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("\t\textent data refs %u\n",
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btrfs_extent_refs(ei));
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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("\t\tblock group used %Lu\n",
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btrfs_block_group_used(bi));
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break;
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case BTRFS_STRING_ITEM_KEY:
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printk("\t\titem data %.*s\n", btrfs_item_size(item),
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btrfs_leaf_data(l) + btrfs_item_offset(item));
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break;
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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 buffer_head *t)
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{
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int i;
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u32 nr;
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struct btrfs_node *c;
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if (!t)
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return;
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c = btrfs_buffer_node(t);
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nr = btrfs_header_nritems(&c->header);
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if (btrfs_is_leaf(c)) {
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btrfs_print_leaf(root, (struct btrfs_leaf *)c);
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return;
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}
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printk("node %Lu level %d total ptrs %d free spc %u\n",
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btrfs_header_blocknr(&c->header),
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btrfs_header_level(&c->header), 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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printk("\tkey %d (%Lu %u %Lu) block %Lu\n",
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i,
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c->ptrs[i].key.objectid,
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c->ptrs[i].key.flags,
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c->ptrs[i].key.offset,
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btrfs_node_blockptr(c, i));
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}
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for (i = 0; i < nr; i++) {
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struct buffer_head *next_buf = read_tree_block(root,
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btrfs_node_blockptr(c, i));
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struct btrfs_node *next = btrfs_buffer_node(next_buf);
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if (btrfs_is_leaf(next) &&
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btrfs_header_level(&c->header) != 1)
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BUG();
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if (btrfs_header_level(&next->header) !=
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btrfs_header_level(&c->header) - 1)
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BUG();
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btrfs_print_tree(root, next_buf);
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btrfs_block_release(root, next_buf);
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}
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}
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