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   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_map_item *mi;
  14         struct btrfs_inode_item *ii;
  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         fflush(stdout);
  21         for (i = 0 ; i < nr ; i++) {
  22                 item = l->items + i;
  23                 type = btrfs_disk_key_type(&item->key);
  24                 printk("\titem %d key (%Lu %u %Lu) itemoff %d itemsize %d\n",
  25                         i,
  26                         btrfs_disk_key_objectid(&item->key),
  27                         btrfs_disk_key_flags(&item->key),
  28                         btrfs_disk_key_offset(&item->key),
  29                         btrfs_item_offset(item),
  30                         btrfs_item_size(item));
  31                 switch (type) {
  32                 case BTRFS_INODE_ITEM_KEY:
  33                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
  34                         printk("\t\tinode generation %Lu size %Lu mode %o\n",
  35                                btrfs_inode_generation(ii),
  36                                btrfs_inode_size(ii),
  37                                btrfs_inode_mode(ii));
  38                         break;
  39                 case BTRFS_DIR_ITEM_KEY:
  40                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
  41                         printk("\t\tdir oid %Lu flags %u type %u\n",
  42                                 btrfs_dir_objectid(di),
  43                                 btrfs_dir_flags(di),
  44                                 btrfs_dir_type(di));
  45                         printk("\t\tname %.*s\n",
  46                                btrfs_dir_name_len(di),(char *)(di + 1));
  47                         break;
  48                 case BTRFS_ROOT_ITEM_KEY:
  49                         ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
  50                         printk("\t\troot data blocknr %Lu refs %u\n",
  51                                 btrfs_root_blocknr(ri), btrfs_root_refs(ri));
  52                         break;
  53                 case BTRFS_EXTENT_ITEM_KEY:
  54                         ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
  55                         printk("\t\textent data refs %u owner %Lu\n",
  56                                 btrfs_extent_refs(ei), btrfs_extent_owner(ei));
  57                         break;
  58                 case BTRFS_INODE_MAP_ITEM_KEY:
  59                         mi = btrfs_item_ptr(l, i, struct btrfs_inode_map_item);
  60                         printk("\t\tinode map key %Lu %u %Lu\n",
  61                                btrfs_disk_key_objectid(&mi->key),
  62                                btrfs_disk_key_flags(&mi->key),
  63                                btrfs_disk_key_offset(&mi->key));
  64                         break;
  65                 case BTRFS_STRING_ITEM_KEY:
  66                         printk("\t\titem data %.*s\n", btrfs_item_size(item),
  67                                 btrfs_leaf_data(l) + btrfs_item_offset(item));
  68                         break;
  69                 };
  70                 fflush(stdout);
  71         }
  72 }
  73 void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t)
  74 {
  75         int i;
  76         u32 nr;
  77         struct btrfs_node *c;
  78
  79         if (!t)
  80                 return;
  81         c = &t->node;
  82         nr = btrfs_header_nritems(&c->header);
  83         if (btrfs_is_leaf(c)) {
  84                 btrfs_print_leaf(root, (struct btrfs_leaf *)c);
  85                 return;
  86         }
  87         printk("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
  88                 btrfs_header_level(&c->header), nr,
  89                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
  90         fflush(stdout);
  91         for (i = 0; i < nr; i++) {
  92                 printk("\tkey %d (%Lu %u %Lu) block %Lu\n",
  93                        i,
  94                        c->ptrs[i].key.objectid,
  95                        c->ptrs[i].key.flags,
  96                        c->ptrs[i].key.offset,
  97                        btrfs_node_blockptr(c, i));
  98                 fflush(stdout);
  99         }
 100         for (i = 0; i < nr; i++) {
 101                 struct btrfs_buffer *next_buf = read_tree_block(root,
 102                                                 btrfs_node_blockptr(c, i));
 103                 struct btrfs_node *next = &next_buf->node;
 104                 if (btrfs_is_leaf(next) &&
 105                     btrfs_header_level(&c->header) != 1)
 106                         BUG();
 107                 if (btrfs_header_level(&next->header) !=
 108                         btrfs_header_level(&c->header) - 1)
 109                         BUG();
 110                 btrfs_print_tree(root, next_buf);
 111                 btrfs_block_release(root, next_buf);
 112         }
 113 }
 114