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 000000000000..4908f9afdf86
--- /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);
+}