Btrfs: add inode item

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
new file mode 100644
index 0000000..4908f9a
--- /dev/null
+++ b/fs/btrfs/inode-item.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "kerncompat.h"
+#include "radix-tree.h"
+#include "ctree.h"
+#include "disk-io.h"
+
+int btrfs_insert_inode(struct btrfs_root *root, u64 objectid,
+		       struct btrfs_inode_item *inode_item)
+{
+	struct btrfs_path path;
+	struct btrfs_key key;
+	int ret;
+	key.objectid = objectid;
+	key.flags = 0;
+	btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
+	key.offset = 0;
+
+	btrfs_init_path(&path);
+	ret = btrfs_insert_item(root, &key, inode_item, sizeof(*inode_item));
+	btrfs_release_path(root, &path);
+	return ret;
+}
+
+int btrfs_lookup_inode(struct btrfs_root *root, struct btrfs_path *path,
+			u64 objectid, int mod)
+{
+	struct btrfs_key key;
+	int ins_len = mod < 0 ? -1 : 0;
+	int cow = mod != 0;
+
+	key.objectid = objectid;
+	key.flags = 0;
+	btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
+	key.offset = 0;
+	return btrfs_search_slot(root, &key, path, ins_len, cow);
+}