git.oblomov.eu Git - linux-2.6/blob - fs/btrfs/print-tree.c

   1 #include <linux/module.h>
   2 #include "ctree.h"
   3 #include "disk-io.h"
   4
   5 void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
   6 {
   7         int i;
   8         u32 nr = btrfs_header_nritems(&l->header);
   9         struct btrfs_item *item;
  10         struct btrfs_extent_item *ei;
  11         struct btrfs_root_item *ri;
  12         struct btrfs_dir_item *di;
  13         struct btrfs_inode_item *ii;
  14         struct btrfs_block_group_item *bi;
  15         u32 type;
  16
  17         printk("leaf %Lu total ptrs %d free space %d\n",
  18                 btrfs_header_blocknr(&l->header), nr,
  19                 btrfs_leaf_free_space(root, l));
  20         for (i = 0 ; i < nr ; i++) {
  21                 item = l->items + i;
  22                 type = btrfs_disk_key_type(&item->key);
  23                 printk("\titem %d key (%Lu %x %Lu) itemoff %d itemsize %d\n",
  24                         i,
  25                         btrfs_disk_key_objectid(&item->key),
  26                         btrfs_disk_key_flags(&item->key),
  27                         btrfs_disk_key_offset(&item->key),
  28                         btrfs_item_offset(item),
  29                         btrfs_item_size(item));
  30                 switch (type) {
  31                 case BTRFS_INODE_ITEM_KEY:
  32                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
  33                         printk("\t\tinode generation %Lu size %Lu mode %o\n",
  34                                btrfs_inode_generation(ii),
  35                                btrfs_inode_size(ii),
  36                                btrfs_inode_mode(ii));
  37                         break;
  38                 case BTRFS_DIR_ITEM_KEY:
  39                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
  40                         printk("\t\tdir oid %Lu flags %u type %u\n",
  41                                 btrfs_disk_key_objectid(&di->location),
  42                                 btrfs_dir_flags(di),
  43                                 btrfs_dir_type(di));
  44                         printk("\t\tname %.*s\n",
  45                                btrfs_dir_name_len(di),(char *)(di + 1));
  46                         break;
  47                 case BTRFS_ROOT_ITEM_KEY:
  48                         ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
  49                         printk("\t\troot data blocknr %Lu refs %u\n",
  50                                 btrfs_root_blocknr(ri), btrfs_root_refs(ri));
  51                         break;
  52                 case BTRFS_EXTENT_ITEM_KEY:
  53                         ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
  54                         printk("\t\textent data refs %u\n",
  55                                 btrfs_extent_refs(ei));
  56                         break;
  57                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
  58                         bi = btrfs_item_ptr(l, i,
  59                                             struct btrfs_block_group_item);
  60                         printk("\t\tblock group used %Lu\n",
  61                                btrfs_block_group_used(bi));
  62                         break;
  63                 case BTRFS_STRING_ITEM_KEY:
  64                         printk("\t\titem data %.*s\n", btrfs_item_size(item),
  65                                 btrfs_leaf_data(l) + btrfs_item_offset(item));
  66                         break;
  67                 };
  68         }
  69 }
  70
  71 void btrfs_print_tree(struct btrfs_root *root, struct buffer_head *t)
  72 {
  73         int i;
  74         u32 nr;
  75         struct btrfs_node *c;
  76
  77         if (!t)
  78                 return;
  79         c = btrfs_buffer_node(t);
  80         nr = btrfs_header_nritems(&c->header);
  81         if (btrfs_is_leaf(c)) {
  82                 btrfs_print_leaf(root, (struct btrfs_leaf *)c);
  83                 return;
  84         }
  85         printk("node %Lu level %d total ptrs %d free spc %u\n",
  86                btrfs_header_blocknr(&c->header),
  87                btrfs_header_level(&c->header), nr,
  88                (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
  89         for (i = 0; i < nr; i++) {
  90                 printk("\tkey %d (%Lu %u %Lu) block %Lu\n",
  91                        i,
  92                        c->ptrs[i].key.objectid,
  93                        c->ptrs[i].key.flags,
  94                        c->ptrs[i].key.offset,
  95                        btrfs_node_blockptr(c, i));
  96         }
  97         for (i = 0; i < nr; i++) {
  98                 struct buffer_head *next_buf = read_tree_block(root,
  99                                                 btrfs_node_blockptr(c, i));
 100                 struct btrfs_node *next = btrfs_buffer_node(next_buf);
 101                 if (btrfs_is_leaf(next) &&
 102                     btrfs_header_level(&c->header) != 1)
 103                         BUG();
 104                 if (btrfs_header_level(&next->header) !=
 105                         btrfs_header_level(&c->header) - 1)
 106                         BUG();
 107                 btrfs_print_tree(root, next_buf);
 108                 btrfs_block_release(root, next_buf);
 109         }
 110 }
 111