1 files changed, 29 insertions, 0 deletions
diff --git a/security/manager/ssl/ipcclientcerts/dynamic-library/stub.cpp b/security/manager/ssl/ipcclientcerts/dynamic-library/stub.cpp
new file mode 100644
index 0000000000..e50f867574
--- /dev/null
+++ b/security/manager/ssl/ipcclientcerts/dynamic-library/stub.cpp
@@ -0,0 +1,29 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "pkcs11.h"
+
+// The build system builds the rust library ipcclientcerts as a static library
+// called ipcclientcerts_static. On macOS and Windows, that static library can
+// be linked with an empty file and turned into a shared library with the
+// function C_GetFunctionList exposed. This allows that shared library to be
+// used as a PKCS#11 module (see osclientcerts).
+// Unfortunately, on Linux, exposing the C_GetFunctionList in the static
+// library doesn't work for some unknown reason. As a workaround, this file
+// declares its own C_GetFunctionList that can be exposed in the shared
+// library. It then calls the function IPCCC_GetFunctionList exposed
+// (internally to the linkage in question) by ipcclientcerts. This enables
+// the build system to ultimately turn ipcclientcerts into a shared library
+// that exposes a C_GetFunctionList function, meaning it can be used as a
+// PKCS#11 module.
+
+extern "C" {
+
+CK_RV IPCCC_GetFunctionList(CK_FUNCTION_LIST_PTR_PTR ppFunctionList);
+
+CK_RV C_GetFunctionList(CK_FUNCTION_LIST_PTR_PTR ppFunctionList) {
+  return IPCCC_GetFunctionList(ppFunctionList);
+}
+}