diff --git a/sys/compat/mach/mach_namemap.c b/sys/compat/mach/mach_namemap.c
index 29a07f2087e8..3e32e3d94d36 100644
--- a/sys/compat/mach/mach_namemap.c
+++ b/sys/compat/mach/mach_namemap.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: mach_namemap.c,v 1.8 2002/12/10 21:36:45 manu Exp $ */
+/*	$NetBSD: mach_namemap.c,v 1.9 2002/12/11 21:23:37 manu Exp $ */
 
 /*-
  * Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mach_namemap.c,v 1.8 2002/12/10 21:36:45 manu Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mach_namemap.c,v 1.9 2002/12/11 21:23:37 manu Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -70,6 +70,7 @@ struct mach_subsystem_namemap mach_namemap[] = {
 	{ 3801, mach_vm_allocate, "vm_allocate" },
 	{ 3802, mach_vm_deallocate, "vm_deallocate" },
 	{ 3803, mach_vm_protect, "vm_protect" },
+	{ 3804, mach_vm_inherit, "vm_inherit" },
 	{ 3812, mach_vm_map, "vm_map" },
 	{ 0, NULL, NULL },
 };
diff --git a/sys/compat/mach/mach_vm.c b/sys/compat/mach/mach_vm.c
index 6008b6f1b779..9c6eed747ad8 100644
--- a/sys/compat/mach/mach_vm.c
+++ b/sys/compat/mach/mach_vm.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: mach_vm.c,v 1.18 2002/12/10 21:36:45 manu Exp $ */
+/*	$NetBSD: mach_vm.c,v 1.19 2002/12/11 21:23:37 manu Exp $ */
 
 /*-
  * Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mach_vm.c,v 1.18 2002/12/10 21:36:45 manu Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mach_vm.c,v 1.19 2002/12/11 21:23:37 manu Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -127,9 +127,11 @@ mach_vm_map(p, msgh, maxlen, dst)
 	case MACH_VM_INHERIT_SHARE:
 		SCARG(&cup, flags) |= MAP_INHERIT;
 		break;
+	case MACH_VM_INHERIT_COPY:
+		SCARG(&cup, flags) |= MAP_COPY;
+		break;
 	case MACH_VM_INHERIT_NONE:
 		break;
-	case MACH_VM_INHERIT_COPY:
 	case MACH_VM_INHERIT_DONATE_COPY:
 	default:
 		uprintf("mach_vm_map: unsupported inherance flag %d\n",
@@ -445,3 +447,38 @@ bad2:
 	return error;
 }
  
+int
+mach_vm_inherit(p, msgh, maxlen, dst)
+	struct proc *p;
+	mach_msg_header_t *msgh;
+	size_t maxlen;
+	mach_msg_header_t *dst;
+{
+	mach_vm_inherit_request_t req;
+	mach_vm_inherit_reply_t rep;
+	struct sys_minherit_args cup;
+	register_t retval;
+	int error;
+
+	if ((error = copyin(msgh, &req, sizeof(req))) != 0)
+		return error;
+
+	bzero(&rep, sizeof(rep));
+
+	SCARG(&cup, addr) = (void *)req.req_addr;
+	SCARG(&cup, len) = req.req_size;
+	/* Flags map well between Mach and NetBSD, just a 8 bit shift */
+	SCARG(&cup, inherit) = req.req_inh << 8;
+
+	if ((error = sys_minherit(p, &cup, &retval)) != 0)
+		return MACH_MSG_ERROR(p, msgh, &req, &rep, error, maxlen, dst);
+	
+	rep.rep_msgh.msgh_bits =
+	    MACH_MSGH_REPLY_LOCAL_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE);
+	rep.rep_msgh.msgh_size = sizeof(rep) - sizeof(rep.rep_trailer);
+	rep.rep_msgh.msgh_local_port = req.req_msgh.msgh_local_port;
+	rep.rep_msgh.msgh_id = req.req_msgh.msgh_id + 100;
+	rep.rep_trailer.msgh_trailer_size = 8;
+
+	return MACH_MSG_RETURN(p, &rep, msgh, sizeof(rep), maxlen, dst);
+}
diff --git a/sys/compat/mach/mach_vm.h b/sys/compat/mach/mach_vm.h
index 945e87cfc906..b96fb15433dd 100644
--- a/sys/compat/mach/mach_vm.h
+++ b/sys/compat/mach/mach_vm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: mach_vm.h,v 1.9 2002/12/10 21:36:45 manu Exp $ */
+/*	$NetBSD: mach_vm.h,v 1.10 2002/12/11 21:23:37 manu Exp $ */
 
 /*-
  * Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -164,6 +164,22 @@ typedef struct {
 	mach_msg_trailer_t rep_trailer;
 } mach_vm_protect_reply_t;
 
+/* vm_inherit */
+typedef struct {
+	mach_msg_header_t req_msgh;
+	mach_ndr_record_t req_ndr;
+	mach_vm_address_t req_addr;
+	mach_vm_size_t req_size;
+	mach_vm_inherit_t req_inh;
+} mach_vm_inherit_request_t;
+
+typedef struct {
+	mach_msg_header_t rep_msgh;
+	mach_ndr_record_t rep_ndr;
+	mach_kern_return_t rep_retval;
+	mach_msg_trailer_t rep_trailer;
+} mach_vm_inherit_reply_t;
+
 int mach_vm_map(struct proc *, mach_msg_header_t *,
     size_t, mach_msg_header_t *);
 int mach_vm_allocate(struct proc *, mach_msg_header_t *,
@@ -174,5 +190,7 @@ int mach_vm_wire(struct proc *, mach_msg_header_t *,
     size_t, mach_msg_header_t *);
 int mach_vm_protect(struct proc *, mach_msg_header_t *,
     size_t, mach_msg_header_t *);
+int mach_vm_inherit(struct proc *, mach_msg_header_t *,
+    size_t, mach_msg_header_t *);
 
 #endif /* _MACH_VM_H_ */