debug-tree.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <uuid/uuid.h>
   4 #include "kerncompat.h"
   5 #include "radix-tree.h"
   6 #include "ctree.h"
   7 #include "disk-io.h"
   8 #include "print-tree.h"
   9 #include "transaction.h"
  10
  11 int main(int ac, char **av) {
  12         struct btrfs_super_block super;
  13         struct btrfs_root *root;
  14         struct btrfs_path path;
  15         struct btrfs_key key;
  16         struct btrfs_root_item *ri;
  17         struct btrfs_leaf *leaf;
  18         struct btrfs_key found_key;
  19         char uuidbuf[37];
  20         int ret;
  21         int slot;
  22
  23         if (ac != 2) {
  24                 fprintf(stderr, "usage: %s device\n", av[0]);
  25                 exit(1);
  26         }
  27         radix_tree_init();
  28         root = open_ctree(av[1], &super);
  29         if (!root) {
  30                 fprintf(stderr, "unable to open %s\n", av[1]);
  31                 exit(1);
  32         }
  33         printf("root tree\n");
  34         btrfs_print_tree(root->fs_info->tree_root,
  35                          root->fs_info->tree_root->node);
  36         printf("dev tree\n");
  37         btrfs_print_tree(root->fs_info->dev_root,
  38                          root->fs_info->dev_root->node);
  39         btrfs_init_path(&path);
  40         key.offset = 0;
  41         key.objectid = 0;
  42         key.flags = 0;
  43         btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
  44         ret = btrfs_search_slot(NULL, root->fs_info->tree_root,
  45                                         &key, &path, 0, 0);
  46         BUG_ON(ret < 0);
  47         while(1) {
  48                 leaf = &path.nodes[0]->leaf;
  49                 slot = path.slots[0];
  50                 if (slot >= btrfs_header_nritems(&leaf->header)) {
  51                         ret = btrfs_next_leaf(root, &path);
  52                         if (ret != 0)
  53                                 break;
  54                         leaf = &path.nodes[0]->leaf;
  55                         slot = path.slots[0];
  56                 }
  57                 btrfs_disk_key_to_cpu(&found_key,
  58                                       &leaf->items[path.slots[0]].key);
  59                 if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) {
  60                         struct btrfs_buffer *buf;
  61                         ri = btrfs_item_ptr(leaf, path.slots[0],
  62                                             struct btrfs_root_item);
  63                         buf = read_tree_block(root->fs_info->tree_root,
  64                                               btrfs_root_blocknr(ri));
  65                         switch(found_key.objectid) {
  66                         case BTRFS_ROOT_TREE_OBJECTID:
  67                                 printf("root ");
  68                                 break;
  69                         case BTRFS_DEV_TREE_OBJECTID:
  70                                 printf("dev tree ");
  71                                 break;
  72                         case BTRFS_EXTENT_TREE_OBJECTID:
  73                                 printf("extent tree ");
  74                                 break;
  75                         }
  76                         printf("tree %Lu %Lu %u\n", found_key.objectid,
  77                                found_key.offset, found_key.flags);
  78                         btrfs_print_tree(root, buf);
  79                 }
  80                 path.slots[0]++;
  81         }
  82         btrfs_release_path(root, &path);
  83         printf("total blocks %Lu\n", btrfs_super_total_blocks(&super));
  84         printf("blocks used %Lu\n", btrfs_super_blocks_used(&super));
  85         uuidbuf[36] = '\0';
  86         uuid_unparse(super.fsid, uuidbuf);
  87         printf("uuid %s\n", uuidbuf);
  88         return 0;
  89 }