[src/trunk]: src/usr.sbin/sysinst Ignore corrupt GPTs

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

details:   https://anonhg.NetBSD.org/src/rev/6baecfa845a0
branches:  trunk
changeset: 452237:6baecfa845a0
user:      martin <martin%NetBSD.org@localhost>
date:      Sun Jun 23 11:47:08 2019 +0000

description:
Ignore corrupt GPTs

diffstat:

 usr.sbin/sysinst/gpt.c |  8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diffs (22 lines):

diff -r ff3c04914f41 -r 6baecfa845a0 usr.sbin/sysinst/gpt.c
--- a/usr.sbin/sysinst/gpt.c    Sun Jun 23 11:31:10 2019 +0000
+++ b/usr.sbin/sysinst/gpt.c    Sun Jun 23 11:47:08 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gpt.c,v 1.1 2019/06/12 06:20:17 martin Exp $   */
+/*     $NetBSD: gpt.c,v 1.2 2019/06/23 11:47:08 martin Exp $   */
 
 /*
  * Copyright 2018 The NetBSD Foundation, Inc.
@@ -334,6 +334,12 @@
        }
        free(textbuf);
 
+       /* If the GPT was not complete (e.g. truncated image), barf */
+       if (disk_size <= 0) {
+               free(parts);
+               return NULL;
+       }
+
        parts->dp.pscheme = &gpt_parts;
        parts->dp.disk = dev;
        parts->dp.disk_start = start;