[src/trunk]: src/sys/compat/sunos Redo previous. zero check before modulo.

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

details:   https://anonhg.NetBSD.org/src/rev/44a015979182
branches:  trunk
changeset: 342202:44a015979182
user:      nakayama <nakayama%NetBSD.org@localhost>
date:      Sat Dec 12 17:48:18 2015 +0000

description:
Redo previous.  zero check before modulo.

diffstat:

 sys/compat/sunos/sunos_ioctl.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r 3af22dcc4ea2 -r 44a015979182 sys/compat/sunos/sunos_ioctl.c
--- a/sys/compat/sunos/sunos_ioctl.c    Sat Dec 12 16:57:53 2015 +0000
+++ b/sys/compat/sunos/sunos_ioctl.c    Sat Dec 12 17:48:18 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sunos_ioctl.c,v 1.66 2015/12/11 08:19:07 mlelstv Exp $ */
+/*     $NetBSD: sunos_ioctl.c,v 1.67 2015/12/12 17:48:18 nakayama Exp $        */
 
 /*
  * Copyright (c) 1993 Markus Wild.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sunos_ioctl.c,v 1.66 2015/12/11 08:19:07 mlelstv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sunos_ioctl.c,v 1.67 2015/12/12 17:48:18 nakayama Exp $");
 
 #include <sys/param.h>
 #include <sys/proc.h>
@@ -880,6 +880,10 @@
                if (error)
                        break;
 
+               if (label.d_secpercyl == 0) {
+                       error = ERANGE; /* XXX */
+                       break;
+               }
                if (pi.pi_offset % label.d_secpercyl != 0) {
                        error = ERANGE; /* XXX */
                        break;