fs/btrfs/print-tree.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "kerncompat.h"
   4 #include "radix-tree.h"
   5 #include "ctree.h"
   6 #include "disk-io.h"
   7
   8 void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
   9 {
  10         int i;
  11         u32 nr = btrfs_header_nritems(&l->header);
  12         struct btrfs_item *item;
  13         struct btrfs_extent_item *ei;
  14         struct btrfs_root_item *ri;
  15         u32 type;
  16         printf("leaf %Lu total ptrs %d free space %d\n",
  17                 btrfs_header_blocknr(&l->header), nr,
  18                 btrfs_leaf_free_space(root, l));
  19         fflush(stdout);
  20         for (i = 0 ; i < nr ; i++) {
  21                 item = l->items + i;
  22                 type = btrfs_disk_key_type(&item->key);
  23                 printf("\titem %d key (%Lu %Lu %u) itemoff %d itemsize %d\n",
  24                         i,
  25                         btrfs_disk_key_objectid(&item->key),
  26                         btrfs_disk_key_offset(&item->key),
  27                         btrfs_disk_key_flags(&item->key),
  28                         btrfs_item_offset(item),
  29                         btrfs_item_size(item));
  30                 switch (type) {
  31                 case BTRFS_INODE_ITEM_KEY:
  32                         break;
  33                 case BTRFS_DIR_ITEM_KEY:
  34                         break;
  35                 case BTRFS_ROOT_ITEM_KEY:
  36                         ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
  37                         printf("\t\troot data blocknr %Lu refs %u\n",
  38                                 btrfs_root_blocknr(ri), btrfs_root_refs(ri));
  39                         break;
  40                 case BTRFS_EXTENT_ITEM_KEY:
  41                         ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
  42                         printf("\t\textent data refs %u owner %Lu\n",
  43                                 btrfs_extent_refs(ei), btrfs_extent_owner(ei));
  44                         break;
  45                 case BTRFS_STRING_ITEM_KEY:
  46                         printf("\t\titem data %.*s\n", btrfs_item_size(item),
  47                                 btrfs_leaf_data(l) + btrfs_item_offset(item));
  48                         break;
  49                 };
  50                 fflush(stdout);
  51         }
  52 }
  53 void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t)
  54 {
  55         int i;
  56         u32 nr;
  57         struct btrfs_node *c;
  58
  59         if (!t)
  60                 return;
  61         c = &t->node;
  62         nr = btrfs_header_nritems(&c->header);
  63         if (btrfs_is_leaf(c)) {
  64                 btrfs_print_leaf(root, (struct btrfs_leaf *)c);
  65                 return;
  66         }
  67         printf("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
  68                 btrfs_header_level(&c->header), nr,
  69                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
  70         fflush(stdout);
  71         for (i = 0; i < nr; i++) {
  72                 printf("\tkey %d (%Lu %Lu %u) block %Lu\n",
  73                        i,
  74                        c->ptrs[i].key.objectid,
  75                        c->ptrs[i].key.offset,
  76                        c->ptrs[i].key.flags,
  77                        btrfs_node_blockptr(c, i));
  78                 fflush(stdout);
  79         }
  80         for (i = 0; i < nr; i++) {
  81                 struct btrfs_buffer *next_buf = read_tree_block(root,
  82                                                 btrfs_node_blockptr(c, i));
  83                 struct btrfs_node *next = &next_buf->node;
  84                 if (btrfs_is_leaf(next) &&
  85                     btrfs_header_level(&c->header) != 1)
  86                         BUG();
  87                 if (btrfs_header_level(&next->header) !=
  88                         btrfs_header_level(&c->header) - 1)
  89                         BUG();
  90                 btrfs_print_tree(root, next_buf);
  91                 btrfs_block_release(root, next_buf);
  92         }
  93 }
  94