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CID 1132762: Add error check for negative, to make zero-divide in module 

impossible.
This commit is contained in:
christos 2013-11-27 20:40:48 +00:00
parent a3577e28a8
commit d873a92b9b
1 changed files with 5 additions and 1 deletions
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6
sbin/gpt/map.c
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@ -29,7 +29,7 @@
__FBSDID("$FreeBSD: src/sbin/gpt/map.c,v 1.6 2005/08/31 01:47:19 marcel Exp $");
#endif
#ifdef __RCSID
__RCSID("$NetBSD: map.c,v 1.5 2013/11/20 08:08:47 jnemeth Exp $");
__RCSID("$NetBSD: map.c,v 1.6 2013/11/27 20:40:48 christos Exp $");
#endif
#include <sys/types.h>
@ -194,6 +194,10 @@ map_resize(map_t *m, off_t size, off_t alignment)
n = m->map_next;
if (size < 0 || alignment < 0) {
warnx("negative size or alignment");
return 0;
}
if (size == 0 && alignment == 0) {
if (n == NULL || n->map_type != MAP_TYPE_UNUSED)
return 0;