disk-io.h

   1 #ifndef __DISKIO__
   2 #define __DISKIO__
   3 #include "list.h"
   4
   5 struct tree_buffer {
   6         u64 blocknr;
   7         int count;
   8         union {
   9                 struct node node;
  10                 struct leaf leaf;
  11         };
  12         struct list_head dirty;
  13         struct list_head cache;
  14 };
  15
  16 struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr);
  17 struct tree_buffer *find_tree_block(struct ctree_root *root, u64 blocknr);
  18 int write_tree_block(struct ctree_root *root, struct tree_buffer *buf);
  19 int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf);
  20 int clean_tree_block(struct ctree_root *root, struct tree_buffer *buf);
  21 int commit_transaction(struct ctree_root *root, struct ctree_super_block *s);
  22 struct ctree_root *open_ctree(char *filename, struct ctree_super_block *s);
  23 int close_ctree(struct ctree_root *root, struct ctree_super_block *s);
  24 void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
  25 int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s);
  26 int mkfs(int fd);
  27
  28 #define CTREE_SUPER_INFO_OFFSET(bs) (16 * (bs))
  29
  30 #endif