--- /dev/null
+//
+// Copyright (c) 2006,2011,2014 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@
+//
+// cshosting - Mach IPC interface for Code Signing Hosts
+//
+#include <mach/std_types.defs>
+#include <mach/mach_types.defs>
+#include "ss_types.defs"
+
+subsystem cshosting 20000;
+serverprefix cshosting_server_;
+userprefix cshosting_client_;
+
+import <securityd_client/ucsp_types.h>;
+
+
+#define CSH_PORTS requestport sport: mach_port_t; \
+ replyport rport: mach_port_make_send_once_t; \
+ out rcode: OSStatus
+
+
+//
+// Code Signing Hosting protocol.
+// These routines are straightforward implementations of the hosting
+// protocol, translated into MIG terms. Hosts are represented by
+// Hosting Ports, whose receive rights are held by the host (whatever
+// it might be).
+// The hosting protocol carries no privileges and can be called by
+// anyone without authentication. It's supposed to be easy to obtain a host's
+// hosting port, so don't hand out any secrets in your implementation.
+//
+routine findGuest(CSH_PORTS; in host: SecGuestRef; in attributes: XMLBlob;
+ out guest: GuestChain; out subhost: mach_port_make_send_t);
+routine guestStatus(CSH_PORTS; in guest: SecGuestRef; out status: uint32);
+skip;
+routine identifyGuest(CSH_PORTS; in guest: SecGuestRef; out path: FilePathOut;
+ out cdhash: HashDataOut; out hashLength: uint32; out attributes: XMLBlobOut);