[src/trunk]: src/sys/kern pass valsize for getsockopt like we do for setsockopt

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/203edfdff45a
branches:  trunk
changeset: 828772:203edfdff45a
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Dec 31 19:39:57 2017 +0000

description:
pass valsize for getsockopt like we do for setsockopt

diffstat:

 sys/kern/uipc_syscalls.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r f59c1a1cba0f -r 203edfdff45a sys/kern/uipc_syscalls.c
--- a/sys/kern/uipc_syscalls.c  Sun Dec 31 15:41:05 2017 +0000
+++ b/sys/kern/uipc_syscalls.c  Sun Dec 31 19:39:57 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uipc_syscalls.c,v 1.188 2017/12/26 08:30:58 kamil Exp $        */
+/*     $NetBSD: uipc_syscalls.c,v 1.189 2017/12/31 19:39:57 christos Exp $     */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -61,7 +61,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uipc_syscalls.c,v 1.188 2017/12/26 08:30:58 kamil Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uipc_syscalls.c,v 1.189 2017/12/31 19:39:57 christos Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_pipe.h"
@@ -1235,7 +1235,10 @@
        if ((error = fd_getsock1(SCARG(uap, s), &so, &fp)) != 0)
                return (error);
 
-       sockopt_init(&sopt, SCARG(uap, level), SCARG(uap, name), 0);
+       if (valsize > MCLBYTES)
+               return EINVAL;
+
+       sockopt_init(&sopt, SCARG(uap, level), SCARG(uap, name), valsize);
 
        if (fp->f_flag & FNOSIGPIPE)
                so->so_options |= SO_NOSIGPIPE;