diff --git a/CMakeLists.txt b/CMakeLists.txt
index 082d3b0..bb499ed 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -272,6 +272,7 @@ pkg_check_modules(GMOCK gmock)
 add_executable(alltests
 	test/msleep.cc
 	test/mock_authenticator.cc
+	test/test_container_of.cc
 	test/test_response_parser.cc
 	test/test_server.cc
 	test/test_timepoint.cc
diff --git a/lib/webfuse/core/container_of.h b/lib/webfuse/core/container_of.h
new file mode 100644
index 0000000..6ddbb82
--- /dev/null
+++ b/lib/webfuse/core/container_of.h
@@ -0,0 +1,16 @@
+#ifndef WF_CONTAINER_OF_H
+#define WF_CONTAINER_OF_H
+
+#ifndef __cplusplus
+#include <stddef.h>
+#else
+#include <cstddef>
+#endif
+
+#define WF_CONTAINER_OF(pointer, type, member) \
+    ({ \
+        const typeof( ((type *)0)->member ) *__mptr = (pointer); \
+        (type *)( (char *)__mptr - offsetof(type, member) ); \
+    })
+
+#endif
diff --git a/test/test_container_of.cc b/test/test_container_of.cc
new file mode 100644
index 0000000..91a96ef
--- /dev/null
+++ b/test/test_container_of.cc
@@ -0,0 +1,29 @@
+#include <gtest/gtest.h>
+#include "webfuse/core/container_of.h"
+
+namespace
+{
+
+struct MyStruct
+{
+    int first;
+    int second;
+};
+
+}
+
+TEST(ContainerOf, FirstMember)
+{
+    MyStruct my_struct = {23, 42};
+
+    int * first = &my_struct.first;
+    ASSERT_EQ(&my_struct, WF_CONTAINER_OF(first, MyStruct, first));
+}
+
+TEST(ContainerOf, SecondMember)
+{
+    MyStruct my_struct = {23, 42};
+
+    int * second = &my_struct.second;
+    ASSERT_EQ(&my_struct, WF_CONTAINER_OF(second, MyStruct, second));
+}
\ No newline at end of file