1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/byteorder.h b/src/include/byteorder.h
new file mode 100644
index 000000000..eb6d5e102
--- /dev/null
+++ b/src/include/byteorder.h
@@ -0,0 +1,55 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+
+#pragma once
+
+#include <boost/endian/conversion.hpp>
+
+#include "int_types.h"
+
+template<typename T>
+inline T swab(T val) {
+  return boost::endian::endian_reverse(val);
+}
+
+template<typename T>
+struct ceph_le {
+private:
+  T v;
+public:
+  ceph_le() = default;
+  explicit ceph_le(T nv)
+    : v{boost::endian::native_to_little(nv)}
+  {}
+  ceph_le<T>& operator=(T nv) {
+    v = boost::endian::native_to_little(nv);
+    return *this;
+  }
+  operator T() const { return boost::endian::little_to_native(v); }
+  friend inline bool operator==(ceph_le a, ceph_le b) {
+    return a.v == b.v;
+  }
+} __attribute__ ((packed));
+
+using ceph_le64 = ceph_le<__u64>;
+using ceph_le32 = ceph_le<__u32>;
+using ceph_le16 = ceph_le<__u16>;
+
+using ceph_les64 = ceph_le<__s64>;
+using ceph_les32 = ceph_le<__s32>;
+using ceph_les16 = ceph_le<__s16>;
+
+inline ceph_les64 init_les64(__s64 x) {
+  ceph_les64 v;
+  v = x;
+  return v;
+}
+inline ceph_les32 init_les32(__s32 x) {
+  ceph_les32 v;
+  v = x;
+  return v;
+}
+inline ceph_les16 init_les16(__s16 x) {
+  ceph_les16 v;
+  v = x;
+  return v;
+}