From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Wed, 10 May 2017 14:56:37 +0000 (+0200)
Subject: utils: handle > 2^31 in lxc_unstack_mountpoint()
X-Git-Tag: lxc-2.1.0~137^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1548%2Fhead;p=thirdparty%2Flxc.git

utils: handle > 2^31 in lxc_unstack_mountpoint()

I mean.. really? But better safe than sorry.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/utils.c b/src/lxc/utils.c
index ae23d4049..778d4da55 100644
--- a/src/lxc/utils.c
+++ b/src/lxc/utils.c
@@ -2221,10 +2221,15 @@ pop_stack:
 		if (errno != EINVAL)
 			return -errno;
 	} else {
+		/* Just stop counting when this happens. That'd just be so
+		 * stupid that we won't even bother trying to report back the
+		 * correct value anymore.
+		 */
+		if (umounts != INT_MAX)
+			umounts++;
 		/* We succeeded in umounting. Make sure that there's no other
 		 * mountpoint stacked underneath.
 		 */
-		umounts++;
 		goto pop_stack;
 	}