From: Karel Zak <kzak@redhat.com>
Date: Tue, 1 Jul 2014 11:51:32 +0000 (+0200)
Subject: lib/ismounted: more robust buffer usage [clang-analyze]
X-Git-Tag: v2.25-rc2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f3135f939d9530c44c8c86a8e408f1d60ca83c0e;p=thirdparty%2Futil-linux.git

lib/ismounted: more robust buffer usage [clang-analyze]

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/lib/ismounted.c b/lib/ismounted.c
index 2463f3356a..8a882b27e6 100644
--- a/lib/ismounted.c
+++ b/lib/ismounted.c
@@ -317,7 +317,8 @@ int check_mount_point(const char *device, int *mount_flags,
 
 	if (is_swap_device(device)) {
 		*mount_flags = MF_MOUNTED | MF_SWAP;
-		strncpy(mtpt, "<swap>", mtlen);
+		if (mtpt && mtlen)
+			strncpy(mtpt, "<swap>", mtlen);
 	} else {
 #ifdef HAVE_MNTENT_H
 		retval = check_mntent(device, mount_flags, mtpt, mtlen);