1 files changed, 40 insertions, 0 deletions
diff --git a/src/crimson/common/tmap_helpers.h b/src/crimson/common/tmap_helpers.h
new file mode 100644
index 000000000..446dbea2a
--- /dev/null
+++ b/src/crimson/common/tmap_helpers.h
@@ -0,0 +1,40 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include "include/expected.hpp"
+
+#include "include/buffer.h"
+#include "include/encoding.h"
+
+namespace crimson::common {
+
+/**
+ * do_tmap_up
+ *
+ * Performs tmap update instructions encoded in buffer referenced by in.
+ *
+ * @param [in] in iterator to buffer containing encoded tmap update operations
+ * @param [in] contents current contents of object
+ * @return buffer containing new object contents,
+ *   -EINVAL for decoding errors,
+ *   -EEXIST for CEPH_OSD_TMAP_CREATE on a key that exists
+ *   -ENOENT for CEPH_OSD_TMAP_RM on a key that does not exist 
+ */
+using do_tmap_up_ret = tl::expected<bufferlist, int>;
+do_tmap_up_ret do_tmap_up(bufferlist::const_iterator in, bufferlist contents);
+
+/**
+ * do_tmap_put
+ *
+ * Validates passed buffer pointed to by in and returns resulting object buffer.
+ *
+ * @param [in] in iterator to buffer containing tmap encoding
+ * @return buffer containing validated tmap encoded by in
+ *   -EINVAL for decoding errors,
+ */
+using do_tmap_up_ret = tl::expected<bufferlist, int>;
+do_tmap_up_ret do_tmap_put(bufferlist::const_iterator in);
+
+}