[lxc-devel] [lxc/stable-1.0] bdev: enable building with gcc7

[brauner on Github]

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From 24fdb3f00807683a553225921b0c4d8f23c274e0 Mon Sep 17 00:00:00 2001
From: Christian Brauner <christian.brauner at ubuntu.com>
Date: Wed, 16 Aug 2017 00:34:23 +0200
Subject: [PATCH] bdev: enable building with gcc7

We shouldn't ignore this anyway.

Signed-off-by: Christian Brauner <christian.brauner at ubuntu.com>
---
 src/lxc/bdev.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lxc/bdev.c b/src/lxc/bdev.c
index 1f1fd66a6..73b682f4c 100644
--- a/src/lxc/bdev.c
+++ b/src/lxc/bdev.c
@@ -1930,7 +1930,11 @@ static int find_free_loopdev_no_control(int *retfd, char *namep)
 			continue;
 		}
 		// We can use this fd
-		snprintf(namep, 100, "/dev/%s", direntp->d_name);
+		ret = snprintf(namep, 100, "/dev/%s", direntp->d_name);
+		if (ret < 0 || ret >= 100) {
+			close(fd);
+			fd = -1;
+		}
 		break;
 	}
 	closedir(dir);