SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 print_leaf(struct leaf *l)
   9 {
  10         int i;
  11         u32 nr = btrfs_header_nritems(&l->header);
  12         struct item *item;
  13         struct extent_item *ei;
  14         printf("leaf %Lu total ptrs %d free space %d\n",
  15                 btrfs_header_blocknr(&l->header), nr, leaf_free_space(l));
  16         fflush(stdout);
  17         for (i = 0 ; i < nr ; i++) {
  18                 item = l->items + i;
  19                 printf("\titem %d key (%Lu %u %Lu) itemoff %d itemsize %d\n",
  20                         i,
  21                         item->key.objectid, item->key.flags, item->key.offset,
  22                         item->offset, item->size);
  23                 fflush(stdout);
  24                 printf("\t\titem data %.*s\n", item->size,
  25                         l->data+item->offset);
  26                 ei = (struct extent_item *)(l->data + item->offset);
  27                 printf("\t\textent data refs %u owner %Lu\n", ei->refs,
  28                         ei->owner);
  29                 fflush(stdout);
  30         }
  31 }
  32 void print_tree(struct ctree_root *root, struct tree_buffer *t)
  33 {
  34         int i;
  35         u32 nr;
  36         struct node *c;
  37
  38         if (!t)
  39                 return;
  40         c = &t->node;
  41         nr = btrfs_header_nritems(&c->header);
  42         if (btrfs_is_leaf(c)) {
  43                 print_leaf((struct leaf *)c);
  44                 return;
  45         }
  46         printf("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
  47                 btrfs_header_level(&c->header), nr,
  48                 (u32)NODEPTRS_PER_BLOCK - nr);
  49         fflush(stdout);
  50         for (i = 0; i < nr; i++) {
  51                 printf("\tkey %d (%Lu %u %Lu) block %Lu\n",
  52                        i,
  53                        c->keys[i].objectid, c->keys[i].flags, c->keys[i].offset,
  54                        c->blockptrs[i]);
  55                 fflush(stdout);
  56         }
  57         for (i = 0; i < nr; i++) {
  58                 struct tree_buffer *next_buf = read_tree_block(root,
  59                                                             c->blockptrs[i]);
  60                 struct node *next = &next_buf->node;
  61                 if (btrfs_is_leaf(next) &&
  62                     btrfs_header_level(&c->header) != 1)
  63                         BUG();
  64                 if (btrfs_header_level(&next->header) !=
  65                         btrfs_header_level(&c->header) - 1)
  66                         BUG();
  67                 print_tree(root, next_buf);
  68                 tree_block_release(root, next_buf);
  69         }
  70
  71 }
  72