--- /dev/null
+/*
+ * Copyright (c) 2018 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+/*
+ * AuthorizationTrampolinePriv.h -- Authorization defines for communication with
+ * authtrampoline.
+ *
+ */
+
+#ifndef _SECURITY_AUTHORIZATIONTRAMPOLINEPRIV_H_
+#define _SECURITY_AUTHORIZATIONTRAMPOLINEPRIV_H_
+
+#define XPC_REQUEST_CREATE_PROCESS "createp"
+#define XPC_REPLY_MSG "rpl"
+#define XPC_EVENT_MSG "evt"
+#define XPC_REQUEST_ID "req"
+
+#define XPC_EVENT_TYPE "evtt"
+#define XPC_EVENT_TYPE_CHILDEND "ce"
+
+#define PARAM_TOOL_PATH "tool" // path to the executable
+#define PARAM_TOOL_PARAMS "params" // parameters passed to the executable
+#define PARAM_ENV "env" // environment
+#define PARAM_CWD "cwd" // current working directory
+#define PARAM_EUID "requid" // uid under which executable should be running
+#define PARAM_AUTHREF "auth" // authorization
+#define PARAM_EXITCODE "ec" // exit code of that tool
+#define PARAM_STDIN "in" // stdin FD
+#define PARAM_STDOUT "out" // stdout FD
+#define PARAM_STDERR "err" // stderr FD
+#define PARAM_DATA "data" // data to be written to the executable's stdin
+#define PARAM_CHILDEND_NEEDED "cen" // indicates client needs to be notified when executable finishes
+
+#define RETVAL_STATUS "status"
+#define RETVAL_CHILD_PID "cpid"
+
+
+#endif /* !_SECURITY_AUTHORIZATIONTRAMPOLINEPRIV_H_ */