[src/trunk]: src/usr.sbin/sysinst Assert that the label data is valid before ...

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

details:   https://anonhg.NetBSD.org/src/rev/795799f193d0
branches:  trunk
changeset: 452264:795799f193d0
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Jun 25 07:14:45 2019 +0000

description:
Assert that the label data is valid before invoking disklabel(8)

diffstat:

 usr.sbin/sysinst/disklabel.c |  4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diffs (18 lines):

diff -r 282dc8e42727 -r 795799f193d0 usr.sbin/sysinst/disklabel.c
--- a/usr.sbin/sysinst/disklabel.c      Tue Jun 25 05:04:35 2019 +0000
+++ b/usr.sbin/sysinst/disklabel.c      Tue Jun 25 07:14:45 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: disklabel.c,v 1.4 2019/06/20 18:32:32 martin Exp $     */
+/*     $NetBSD: disklabel.c,v 1.5 2019/06/25 07:14:45 martin Exp $     */
 
 /*
  * Copyright 2018 The NetBSD Foundation, Inc.
@@ -272,6 +272,8 @@
        char *d;
        size_t n;
 
+       assert(parts->l.d_secsize != 0);
+
        sprintf(fname, "/tmp/disklabel.%u", getpid());
        f = fopen(fname, "w");
        if (f == NULL)