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 static int print_dir_item(struct btrfs_item *item,
   9                           struct btrfs_dir_item *di)
  10 {
  11         u32 total;
  12         u32 cur = 0;
  13         u32 len;
  14         total = btrfs_item_size(item);
  15         while(cur < total) {
  16                 printf("\t\tdir index %llu flags %u type %u\n",
  17                      (unsigned long long)btrfs_disk_key_objectid(&di->location),
  18                      btrfs_dir_flags(di),
  19                      btrfs_dir_type(di));
  20                 printf("\t\tname %.*s\n",
  21                        btrfs_dir_name_len(di),(char *)(di + 1));
  22                 len = sizeof(*di) + btrfs_dir_name_len(di);
  23                 di = (struct btrfs_dir_item *)((char *)di + len);
  24                 cur += len;
  25         }
  26         return 0;
  27 }
  28 void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
  29 {
  30         int i;
  31         u32 nr = btrfs_header_nritems(&l->header);
  32         struct btrfs_item *item;
  33         struct btrfs_extent_item *ei;
  34         struct btrfs_root_item *ri;
  35         struct btrfs_dir_item *di;
  36         struct btrfs_inode_item *ii;
  37         struct btrfs_file_extent_item *fi;
  38         struct btrfs_csum_item *ci;
  39         struct btrfs_block_group_item *bi;
  40         u32 type;
  41
  42         printf("leaf %llu ptrs %d free space %d generation %llu owner %llu\n",
  43                 (unsigned long long)btrfs_header_blocknr(&l->header), nr,
  44                 btrfs_leaf_free_space(root, l),
  45                 (unsigned long long)btrfs_header_generation(&l->header),
  46                 (unsigned long long)btrfs_header_owner(&l->header));
  47         fflush(stdout);
  48         for (i = 0 ; i < nr ; i++) {
  49                 item = l->items + i;
  50                 type = btrfs_disk_key_type(&item->key);
  51                 printf("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n",
  52                         i,
  53                         (unsigned long long)btrfs_disk_key_objectid(&item->key),
  54                         btrfs_disk_key_flags(&item->key),
  55                         (unsigned long long)btrfs_disk_key_offset(&item->key),
  56                         btrfs_item_offset(item),
  57                         btrfs_item_size(item));
  58                 switch (type) {
  59                 case BTRFS_INODE_ITEM_KEY:
  60                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
  61                         printf("\t\tinode generation %llu size %llu block group %llu mode %o\n",
  62                                (unsigned long long)btrfs_inode_generation(ii),
  63                                (unsigned long long)btrfs_inode_size(ii),
  64                                (unsigned long long)btrfs_inode_block_group(ii),
  65                                btrfs_inode_mode(ii));
  66                         break;
  67                 case BTRFS_DIR_ITEM_KEY:
  68                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
  69                         print_dir_item(l->items + i, di);
  70                         break;
  71                 case BTRFS_DIR_INDEX_KEY:
  72                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
  73                         print_dir_item(l->items + i, di);
  74                         break;
  75                 case BTRFS_ROOT_ITEM_KEY:
  76                         ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
  77                         printf("\t\troot data blocknr %llu dirid %llu refs %u\n",
  78                                 (unsigned long long)btrfs_root_blocknr(ri),
  79                                 (unsigned long long)btrfs_root_dirid(ri),
  80                                 btrfs_root_refs(ri));
  81                         break;
  82                 case BTRFS_EXTENT_ITEM_KEY:
  83                         ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
  84                         printf("\t\textent data refs %u owner %llu\n",
  85                                 btrfs_extent_refs(ei),
  86                                 (unsigned long long)btrfs_extent_owner(ei));
  87                         break;
  88                 case BTRFS_CSUM_ITEM_KEY:
  89                         ci = btrfs_item_ptr(l, i,
  90                                             struct btrfs_csum_item);
  91                         printf("\t\tcsum item\n");
  92                         break;
  93                 case BTRFS_EXTENT_DATA_KEY:
  94                         fi = btrfs_item_ptr(l, i,
  95                                             struct btrfs_file_extent_item);
  96                         if (btrfs_file_extent_type(fi) ==
  97                             BTRFS_FILE_EXTENT_INLINE) {
  98                                 printf("\t\tinline extent data size %u\n",
  99                                    btrfs_file_extent_inline_len(l->items + i));
 100                                 break;
 101                         }
 102                         printf("\t\textent data disk block %llu nr %llu\n",
 103                                (unsigned long long)btrfs_file_extent_disk_blocknr(fi),
 104                                (unsigned long long)btrfs_file_extent_disk_num_blocks(fi));
 105                         printf("\t\textent data offset %llu nr %llu\n",
 106                           (unsigned long long)btrfs_file_extent_offset(fi),
 107                           (unsigned long long)btrfs_file_extent_num_blocks(fi));
 108                         break;
 109                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
 110                         bi = btrfs_item_ptr(l, i,
 111                                             struct btrfs_block_group_item);
 112                         printf("\t\tblock group used %llu flags %x\n",
 113                                (unsigned long long)btrfs_block_group_used(bi),
 114                                bi->flags);
 115                         break;
 116                 case BTRFS_STRING_ITEM_KEY:
 117                         printf("\t\titem data %.*s\n", btrfs_item_size(item),
 118                                 btrfs_leaf_data(l) + btrfs_item_offset(item));
 119                         break;
 120                 };
 121                 fflush(stdout);
 122         }
 123 }
 124 void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t)
 125 {
 126         int i;
 127         u32 nr;
 128         struct btrfs_node *c;
 129
 130         if (!t)
 131                 return;
 132         c = &t->node;
 133         nr = btrfs_header_nritems(&c->header);
 134         if (btrfs_is_leaf(c)) {
 135                 btrfs_print_leaf(root, (struct btrfs_leaf *)c);
 136                 return;
 137         }
 138         printf("node %llu level %d ptrs %d free %u generation %llu owner %llu\n",
 139                (unsigned long long)t->blocknr,
 140                 btrfs_header_level(&c->header), nr,
 141                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
 142                 (unsigned long long)btrfs_header_generation(&c->header),
 143                 (unsigned long long)btrfs_header_owner(&c->header));
 144         fflush(stdout);
 145         for (i = 0; i < nr; i++) {
 146                 printf("\tkey %d (%llu %x %llu) block %llu\n",
 147                        i,
 148                        (unsigned long long)c->ptrs[i].key.objectid,
 149                        c->ptrs[i].key.flags,
 150                        (unsigned long long)c->ptrs[i].key.offset,
 151                        (unsigned long long)btrfs_node_blockptr(c, i));
 152                 fflush(stdout);
 153         }
 154         for (i = 0; i < nr; i++) {
 155                 struct btrfs_buffer *next_buf = read_tree_block(root,
 156                                                 btrfs_node_blockptr(c, i));
 157                 struct btrfs_node *next = &next_buf->node;
 158                 if (btrfs_is_leaf(next) &&
 159                     btrfs_header_level(&c->header) != 1)
 160                         BUG();
 161                 if (btrfs_header_level(&next->header) !=
 162                         btrfs_header_level(&c->header) - 1)
 163                         BUG();
 164                 btrfs_print_tree(root, next_buf);
 165                 btrfs_block_release(root, next_buf);
 166         }
 167 }
 168