diff --git a/sys/compat/common/compat_50_mod.c b/sys/compat/common/compat_50_mod.c
index bfa90f8b60b4..7c9e87a0694f 100644
--- a/sys/compat/common/compat_50_mod.c
+++ b/sys/compat/common/compat_50_mod.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: compat_50_mod.c,v 1.2 2019/01/27 02:08:39 pgoyette Exp $	*/
+/*	$NetBSD: compat_50_mod.c,v 1.3 2019/04/15 02:07:11 pgoyette Exp $	*/
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: compat_50_mod.c,v 1.2 2019/01/27 02:08:39 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: compat_50_mod.c,v 1.3 2019/04/15 02:07:11 pgoyette Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_compat_netbsd.h"
@@ -87,6 +87,7 @@ compat_50_init(void)
 	vnd_50_init();
 	rndpseudo_50_init();
 	rtsock_50_init();
+	kern_uipc_socket_50_init();
 
 	return error;
 
@@ -107,6 +108,7 @@ compat_50_fini(void)
 {
 	int error = 0;
 
+	kern_uipc_socket_50_fini();
 	rtsock_50_fini();
 	rndpseudo_50_fini();
 	vnd_50_fini();
@@ -152,6 +154,7 @@ compat_50_fini(void)
 	vnd_50_init();
 	rndpseudo_50_init();
 	rtsock_50_init();
+	kern_uipc_socket_50_init();
 
 	return error;
 }
diff --git a/sys/compat/common/compat_mod.h b/sys/compat/common/compat_mod.h
index 8d2e0ec98fc3..67082cb264b1 100644
--- a/sys/compat/common/compat_mod.h
+++ b/sys/compat/common/compat_mod.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: compat_mod.h,v 1.3 2019/01/28 15:46:49 christos Exp $	*/
+/*	$NetBSD: compat_mod.h,v 1.4 2019/04/15 02:07:11 pgoyette Exp $	*/
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -76,6 +76,8 @@ void rndpseudo_50_init(void);
 void rndpseudo_50_fini(void);
 void rtsock_50_init(void);
 void rtsock_50_fini(void);
+void kern_uipc_socket_50_init(void);
+void kern_uipc_socket_50_fini(void);
 #endif
 
 #ifdef COMPAT_40
diff --git a/sys/compat/common/files.common b/sys/compat/common/files.common
index 8be2437dfee1..f6df483af98e 100644
--- a/sys/compat/common/files.common
+++ b/sys/compat/common/files.common
@@ -1,4 +1,4 @@
-#	$NetBSD: files.common,v 1.2 2019/01/27 02:08:39 pgoyette Exp $
+#	$NetBSD: files.common,v 1.3 2019/04/15 02:07:11 pgoyette Exp $
 
 #
 # Generic utility files, used by various compat options.
@@ -85,6 +85,7 @@ file	compat/common/vnd_50.c			compat_50
 file	compat/common/clockctl_50.c		compat_50
 file	compat/common/if_spppsubr50.c		compat_50
 file	compat/common/uvm_50.c			compat_50
+file	compat/common/kern_uipc_socket_50.c	compat_50
 
 # Compatibility code for NetBSD 6.0
 file	compat/common/compat_60_mod.c		compat_60
diff --git a/sys/compat/common/kern_uipc_socket_50.c b/sys/compat/common/kern_uipc_socket_50.c
new file mode 100644
index 000000000000..50a7be9e06bc
--- /dev/null
+++ b/sys/compat/common/kern_uipc_socket_50.c
@@ -0,0 +1,233 @@
+/*	$NetBSD: kern_uipc_socket_50.c,v 1.1 2019/04/15 02:07:11 pgoyette Exp $	*/
+
+/*
+ * Copyright (c) 2002, 2007, 2008, 2009 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of Wasabi Systems, Inc, and by Andrew Doran.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 2004 The FreeBSD Foundation
+ * Copyright (c) 2004 Robert Watson
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)uipc_socket.c       8.6 (Berkeley) 5/2/95
+ */
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: Utah $Hdr: vn.c 1.13 94/04/02$
+ *
+ *	@(#)vn.c	8.9 (Berkeley) 5/14/95
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: kern_uipc_socket_50.c,v 1.1 2019/04/15 02:07:11 pgoyette Exp $");
+
+#if defined(_KERNEL_OPT)
+#include "opt_compat_netbsd.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/file.h>
+#include <sys/compat_stub.h>
+#include <sys/socketvar.h>
+
+#include <compat/sys/time.h>
+#include <compat/sys/socket.h>
+
+#include <compat/common/compat_mod.h>
+
+static int
+uipc_socket_50_getopt1(int opt, struct socket *so, struct sockopt *sopt,
+    struct timeval *tv)
+{
+	int optval, error;
+	struct timeval50 otv;
+
+	switch (opt) {
+
+	case SO_OSNDTIMEO:
+	case SO_ORCVTIMEO:
+		optval = (opt == SO_OSNDTIMEO ?
+		    so->so_snd.sb_timeo : so->so_rcv.sb_timeo);
+
+		otv.tv_sec = optval / hz;
+		otv.tv_usec = (optval % hz) * tick;
+
+		error = sockopt_set(sopt, &otv, sizeof(otv));
+		break;
+
+	case SO_OTIMESTAMP:
+		error = sockopt_setint(sopt, (so->so_options & opt) ? 1 : 0);
+		break;
+
+	default:
+		error = EPASSTHROUGH;
+	}
+	return error;
+}
+
+static int
+uipc_socket_50_setopt1(int opt, struct socket *so, const struct sockopt *sopt,
+    struct timeval *tv)
+{
+	int optval, error;
+	struct timeval50 otv;
+
+	switch (opt) {
+
+	case SO_OSNDTIMEO:
+	case SO_ORCVTIMEO:
+		error = sockopt_get(sopt, &otv, sizeof(otv));
+		if (error) {
+			solock(so);
+			break;
+		}
+		timeval50_to_timeval(&otv, tv);
+		opt = opt == SO_OSNDTIMEO ? SO_SNDTIMEO : SO_RCVTIMEO;
+		/*
+		 * Processing will continue as for SO_SNDTIMEO
+		 * and SO_RCVTIMEO, using the new-format tv
+		 */
+		break;
+
+	case SO_OTIMESTAMP:
+		error = sockopt_getint(sopt, &optval);
+		solock(so);
+		if (error)
+			break;
+		if (optval)
+			so->so_options |= opt;
+		else
+			so->so_options &= ~opt;
+		break;
+
+	default:
+		error = EPASSTHROUGH;
+	}
+	return error;
+}
+
+static int
+uipc_socket_50_sbts(int opt, struct mbuf **mp)
+{
+	struct timeval50 tv50;
+	struct timeval tv;
+
+	microtime(&tv);
+
+	if (opt & SO_OTIMESTAMP) {
+
+		timeval_to_timeval50(&tv, &tv50);
+		*mp = sbcreatecontrol(&tv50, sizeof(tv50), SCM_OTIMESTAMP,
+		    SOL_SOCKET);
+		if (*mp)
+			mp = &(*mp)->m_next;
+		return 0;
+	} else
+		return EPASSTHROUGH;
+}
+
+void
+kern_uipc_socket_50_init(void)
+{
+
+	MODULE_HOOK_SET(uipc_socket_50_setopt1_hook, "sockop_50",
+	    uipc_socket_50_setopt1);
+	MODULE_HOOK_SET(uipc_socket_50_getopt1_hook, "sockop_50",
+	    uipc_socket_50_getopt1);
+	MODULE_HOOK_SET(uipc_socket_50_sbts_hook, "sbts_50",
+	    uipc_socket_50_sbts);
+}
+
+void
+kern_uipc_socket_50_fini(void)
+{
+
+	MODULE_HOOK_UNSET(uipc_socket_50_setopt1_hook);
+	MODULE_HOOK_UNSET(uipc_socket_50_getopt1_hook);
+	MODULE_HOOK_UNSET(uipc_socket_50_sbts_hook);
+}
diff --git a/sys/kern/compat_stub.c b/sys/kern/compat_stub.c
index 684e0c3cf282..82cbf6fdcff8 100644
--- a/sys/kern/compat_stub.c
+++ b/sys/kern/compat_stub.c
@@ -1,4 +1,4 @@
-/* $NetBSD: compat_stub.c,v 1.8 2019/02/05 23:28:02 christos Exp $	*/
+/* $NetBSD: compat_stub.c,v 1.9 2019/04/15 02:07:11 pgoyette Exp $	*/
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -173,10 +173,17 @@ struct if43_cvtcmd_20_hook_t if43_cvtcmd_20_hook;
 struct tty_ttioctl_43_hook_t tty_ttioctl_43_hook;
 
 /*
- * uipc_syscalls_40 compatability
+ * uipc_syscalls_40 compatibility
  */
 struct uipc_syscalls_40_hook_t uipc_syscalls_40_hook;
 
+/*
+ * uipc_socket_50 compatibility
+ */
+struct uipc_socket_50_setopt1_hook_t uipc_socket_50_setopt1_hook;
+struct uipc_socket_50_getopt1_hook_t uipc_socket_50_getopt1_hook;
+struct uipc_socket_50_sbts_hook_t uipc_socket_50_sbts_hook;
+
 /*
  * uipc_syscalls_50 compatability
  */
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
index 4bb9d82d7ad7..ba9de4d1677f 100644
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: uipc_socket.c,v 1.274 2019/04/14 09:09:55 maxv Exp $	*/
+/*	$NetBSD: uipc_socket.c,v 1.275 2019/04/15 02:07:11 pgoyette Exp $	*/
 
 /*
  * Copyright (c) 2002, 2007, 2008, 2009 The NetBSD Foundation, Inc.
@@ -71,7 +71,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uipc_socket.c,v 1.274 2019/04/14 09:09:55 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uipc_socket.c,v 1.275 2019/04/15 02:07:11 pgoyette Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_compat_netbsd.h"
@@ -104,11 +104,10 @@ __KERNEL_RCSID(0, "$NetBSD: uipc_socket.c,v 1.274 2019/04/14 09:09:55 maxv Exp $
 #include <sys/mutex.h>
 #include <sys/condvar.h>
 #include <sys/kthread.h>
+#include <sys/compat_stub.h>
 
-#ifdef COMPAT_50
 #include <compat/sys/time.h>
 #include <compat/sys/socket.h>
-#endif
 
 #include <uvm/uvm_extern.h>
 #include <uvm/uvm_loan.h>
@@ -1707,12 +1706,23 @@ sorflush(struct socket *so)
 static int
 sosetopt1(struct socket *so, const struct sockopt *sopt)
 {
-	int error = EINVAL, opt;
+	int error, opt;
 	int optval = 0; /* XXX: gcc */
 	struct linger l;
 	struct timeval tv;
 
-	switch ((opt = sopt->sopt_name)) {
+	opt = sopt->sopt_name;
+
+	MODULE_HOOK_CALL(uipc_socket_50_setopt1_hook, (opt, so, sopt, &tv),
+	    enosys(), error);
+	if (error == EPASSTHROUGH)
+		error = EINVAL;
+	else if (error && error != ENOSYS) {
+		KASSERT(solocked(so));
+		return error;
+	}
+
+	switch (opt) {
 
 	case SO_ACCEPTFILTER:
 		error = accept_filt_setopt(so, sopt);
@@ -1747,9 +1757,6 @@ sosetopt1(struct socket *so, const struct sockopt *sopt)
 	case SO_TIMESTAMP:
 	case SO_NOSIGPIPE:
 	case SO_RERROR:
-#ifdef SO_OTIMESTAMP
-	case SO_OTIMESTAMP:
-#endif
 		error = sockopt_getint(sopt, &optval);
 		solock(so);
 		if (error)
@@ -1815,25 +1822,15 @@ sosetopt1(struct socket *so, const struct sockopt *sopt)
 		}
 		break;
 
-#ifdef COMPAT_50
 	case SO_OSNDTIMEO:
-	case SO_ORCVTIMEO: {
-		struct timeval50 otv;
-		error = sockopt_get(sopt, &otv, sizeof(otv));
-		if (error) {
+	case SO_ORCVTIMEO:
+		if (error == ENOSYS) {
+			error = EINVAL;
 			solock(so);
 			break;
 		}
-		timeval50_to_timeval(&otv, &tv);
-		opt = opt == SO_OSNDTIMEO ? SO_SNDTIMEO : SO_RCVTIMEO;
-		error = 0;
-		/*FALLTHROUGH*/
-	}
-#endif /* COMPAT_50 */
-
-		/*FALLTHROUGH*/
+		/* FALLTHROUGH */
 	case SO_SNDTIMEO:
-		/*FALLTHROUGH*/
 	case SO_RCVTIMEO:
 		if (error)
 			error = sockopt_get(sopt, &tv, sizeof(tv));
@@ -1955,9 +1952,6 @@ sogetopt1(struct socket *so, struct sockopt *sopt)
 	case SO_TIMESTAMP:
 	case SO_NOSIGPIPE:
 	case SO_RERROR:
-#ifdef SO_OTIMESTAMP
-	case SO_OTIMESTAMP:
-#endif
 	case SO_ACCEPTCONN:
 		error = sockopt_setint(sopt, (so->so_options & opt) ? 1 : 0);
 		break;
@@ -1991,22 +1985,6 @@ sogetopt1(struct socket *so, struct sockopt *sopt)
 		error = sockopt_setint(sopt, so->so_rcv.sb_lowat);
 		break;
 
-#ifdef COMPAT_50
-	case SO_OSNDTIMEO:
-	case SO_ORCVTIMEO: {
-		struct timeval50 otv;
-
-		optval = (opt == SO_OSNDTIMEO ?
-		     so->so_snd.sb_timeo : so->so_rcv.sb_timeo);
-
-		otv.tv_sec = optval / hz;
-		otv.tv_usec = (optval % hz) * tick;
-
-		error = sockopt_set(sopt, &otv, sizeof(otv));
-		break;
-	}
-#endif /* COMPAT_50 */
-
 	case SO_SNDTIMEO:
 	case SO_RCVTIMEO:
 		optval = (opt == SO_SNDTIMEO ?
@@ -2023,7 +2001,10 @@ sogetopt1(struct socket *so, struct sockopt *sopt)
 		break;
 
 	default:
-		error = ENOPROTOOPT;
+		MODULE_HOOK_CALL(uipc_socket_50_getopt1_hook,
+		    (opt, so, sopt, &tv), enosys(), error);
+		if (error)
+			error = ENOPROTOOPT;
 		break;
 	}
 
@@ -2441,19 +2422,13 @@ struct mbuf **
 sbsavetimestamp(int opt, struct mbuf **mp)
 {
 	struct timeval tv;
+	int error;
+
 	microtime(&tv);
 
-#ifdef SO_OTIMESTAMP
-	if (opt & SO_OTIMESTAMP) {
-		struct timeval50 tv50;
-
-		timeval_to_timeval50(&tv, &tv50);
-		*mp = sbcreatecontrol(&tv50, sizeof(tv50),
-		    SCM_OTIMESTAMP, SOL_SOCKET);
-		if (*mp)
-			mp = &(*mp)->m_next;
-	} else
-#endif
+	MODULE_HOOK_CALL(uipc_socket_50_sbts_hook, (opt, mp), enosys(), error);
+	if (error == 0)
+		return mp;
 
 	if (opt & SO_TIMESTAMP) {
 		*mp = sbcreatecontrol(&tv, sizeof(tv),
diff --git a/sys/modules/compat_50/Makefile b/sys/modules/compat_50/Makefile
index 0e6a3aecac64..92bceea52f5d 100644
--- a/sys/modules/compat_50/Makefile
+++ b/sys/modules/compat_50/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.3 2019/02/17 04:05:45 rin Exp $
+#	$NetBSD: Makefile,v 1.4 2019/04/15 02:07:11 pgoyette Exp $
 
 .include "../Makefile.inc"
 
@@ -12,6 +12,7 @@ SRCS+=	compat_50_mod.c
 SRCS+=	kern_50.c kern_time_50.c kern_select_50.c
 SRCS+=	vfs_syscalls_50.c uipc_syscalls_50.c uvm_50.c
 SRCS+=	rndpseudo_50.c clockctl_50.c if_spppsubr50.c
+SRCS+=	kern_uipc_socket_50.c
 
 CPPFLAGS+=	-DINET -DINET6
 # XXX someday we'll need to add
diff --git a/sys/sys/compat_stub.h b/sys/sys/compat_stub.h
index a603727d6406..7150cfd34b98 100644
--- a/sys/sys/compat_stub.h
+++ b/sys/sys/compat_stub.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: compat_stub.h,v 1.11 2019/02/05 23:28:02 christos Exp $	*/
+/*	$NetBSD: compat_stub.h,v 1.12 2019/04/15 02:07:11 pgoyette Exp $	*/
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -220,6 +220,19 @@ MODULE_HOOK(tty_ttioctl_43_hook, int,
 
 MODULE_HOOK(uipc_syscalls_40_hook, int, (u_long, void *));
 
+/*
+ * uipc_socket_50 compatibility
+ */
+struct sockopt;
+struct timeval;
+struct mbuf;
+
+MODULE_HOOK(uipc_socket_50_setopt1_hook, int,
+    (int, struct socket *, const struct sockopt *, struct timeval *));
+MODULE_HOOK(uipc_socket_50_getopt1_hook, int,
+    (int, struct socket *, struct sockopt *, struct timeval *));
+MODULE_HOOK(uipc_socket_50_sbts_hook, int, (int, struct mbuf **));
+
 /*
  * uipc_syscalls_50 compatibility
  */
@@ -311,7 +324,6 @@ MODULE_HOOK(vfs_openat_10_hook, int, (struct pathbuf **));
 /*
  * Hook for compat_70_unp_addsockcred
  */
-struct mbuf;
 MODULE_HOOK(uipc_unp_70_hook, struct mbuf *,
     (struct lwp *, struct mbuf *));