Author: jhb
Date: Thu Dec 17 20:42:05 2015
New Revision: 292410
URL: https://svnweb.freebsd.org/changeset/base/292410
Log:
Exit cleanly if malloc() fails to allocate a buffer for a copy of the
current MBR.
PR: 205322
Submitted by: Alexander Kuleshov <kuleshovm...@gmail.com>
MFC after: 1 week
Modified:
head/usr.sbin/boot0cfg/boot0cfg.c
Modified: head/usr.sbin/boot0cfg/boot0cfg.c
==============================================================================
--- head/usr.sbin/boot0cfg/boot0cfg.c Thu Dec 17 20:33:20 2015
(r292409)
+++ head/usr.sbin/boot0cfg/boot0cfg.c Thu Dec 17 20:42:05 2015
(r292410)
@@ -337,6 +337,8 @@ read_mbr(const char *disk, u_int8_t **mb
return (mbr_size);
}
*mbr = malloc(sizeof(buf));
+ if (mbr == NULL)
+ errx(1, "%s: unable to allocate MBR buffer", disk);
memcpy(*mbr, buf, sizeof(buf));
close(fd);
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