From 140d96a562d72d5f581c076298fbd1682811b1e2 Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Wed, 12 Dec 2007 14:39:46 -0500
Subject: Create macros to generation set/get funcs for on disk structures

---
 inode-item.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

(limited to 'inode-item.c')

diff --git a/inode-item.c b/inode-item.c
index 799a91d..9871f93 100644
--- a/inode-item.c
+++ b/inode-item.c
@@ -24,6 +24,59 @@
 #include "disk-io.h"
 #include "transaction.h"
 
+int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
+			   struct btrfs_root *root,
+			   const char *name, int name_len,
+			   u64 inode_objectid, u64 ref_objectid)
+{
+	struct btrfs_path path;
+	struct btrfs_key key;
+	struct btrfs_inode_ref *ref;
+	char *ptr;
+	int ret;
+	int ins_len = name_len + sizeof(*ref);
+
+	key.objectid = inode_objectid;
+	key.offset = ref_objectid;
+	btrfs_set_key_type(&key, BTRFS_INODE_REF_KEY);
+
+	btrfs_init_path(&path);
+	ret = btrfs_insert_empty_item(trans, root, &path, &key,
+				      ins_len);
+	if (ret == -EEXIST) {
+#if 0
+		u32 old_size;
+
+		if (find_name_in_backref(path, name, name_len, &ref))
+			goto out;
+
+		old_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
+		ret = btrfs_extend_item(trans, root, path, ins_len);
+		BUG_ON(ret);
+		ref = btrfs_item_ptr(path->nodes[0], path->slots[0],
+				     struct btrfs_inode_ref);
+		ref = (struct btrfs_inode_ref *)((unsigned long)ref + old_size);
+		btrfs_set_inode_ref_name_len(path->nodes[0], ref, name_len);
+		ptr = (unsigned long)(ref + 1);
+		ret = 0;
+#endif
+		goto out;
+	} else if (ret < 0) {
+		goto out;
+	} else {
+		ref = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
+				     struct btrfs_inode_ref);
+		btrfs_set_inode_ref_name_len(ref, name_len);
+		ptr = (char *)(ref + 1);
+	}
+	memcpy(ptr, name, name_len);
+	dirty_tree_block(trans, root, path.nodes[0]);
+
+out:
+	btrfs_release_path(root, &path);
+	return ret;
+}
+
 int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
 		       *root, u64 objectid, struct btrfs_inode_item
 		       *inode_item)
-- 
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