From: Karel Zak <kzak@redhat.com>
Date: Fri, 7 Sep 2012 11:02:42 +0000 (+0200)
Subject: switch_root: check open() return value [coverity scan]
X-Git-Tag: v2.23-rc1~713
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=17df84df275aa6ebf92dfb727a477bb8c2abe6eb;p=thirdparty%2Futil-linux.git

switch_root: check open() return value [coverity scan]

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

diff --git a/sys-utils/switch_root.c b/sys-utils/switch_root.c
index bcd801d5fb..f0ef67745f 100644
--- a/sys-utils/switch_root.c
+++ b/sys-utils/switch_root.c
@@ -154,6 +154,10 @@ static int switchroot(const char *newroot)
 	}
 
 	cfd = open("/", O_RDONLY);
+	if (cfd < 0) {
+		warn(_("cannot open %s"), "/");
+		return -1;
+	}
 
 	if (mount(newroot, "/", NULL, MS_MOVE, NULL) < 0) {
 		close(cfd);