inode-item.c

   1 /*
   2  * Copyright (C) 2007 Oracle.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include "kerncompat.h"
  22 #include "radix-tree.h"
  23 #include "ctree.h"
  24 #include "disk-io.h"
  25 #include "transaction.h"
  26
  27 int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
  28                        *root, u64 objectid, struct btrfs_inode_item
  29                        *inode_item)
  30 {
  31         struct btrfs_path path;
  32         struct btrfs_key key;
  33         int ret;
  34         key.objectid = objectid;
  35         btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
  36         key.offset = 0;
  37
  38         btrfs_init_path(&path);
  39         ret = btrfs_insert_item(trans, root, &key, inode_item,
  40                                 sizeof(*inode_item));
  41         btrfs_release_path(root, &path);
  42         return ret;
  43 }
  44
  45 int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
  46                        *root, struct btrfs_path *path, u64 objectid, int mod)
  47 {
  48         struct btrfs_key key;
  49         int ins_len = mod < 0 ? -1 : 0;
  50         int cow = mod != 0;
  51
  52         key.objectid = objectid;
  53         btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
  54         key.offset = 0;
  55         return btrfs_search_slot(trans, root, &key, path, ins_len, cow);
  56 }