From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Tue, 15 Aug 2017 22:34:23 +0000 (+0200)
Subject: bdev: enable building with gcc7
X-Git-Tag: lxc-1.0.11~40^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9163a33b13c907943f78f14f988d03575a6ef792;p=thirdparty%2Flxc.git

bdev: enable building with gcc7

We shouldn't ignore this anyway.

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

diff --git a/src/lxc/bdev.c b/src/lxc/bdev.c
index 1f1fd66a6..59eda7e40 100644
--- a/src/lxc/bdev.c
+++ b/src/lxc/bdev.c
@@ -1917,6 +1917,8 @@ static int find_free_loopdev_no_control(int *retfd, char *namep)
 	}
 
 	while ((direntp = readdir(dir))) {
+		int ret;
+
 		if (!direntp)
 			break;
 		if (strncmp(direntp->d_name, "loop", 4) != 0)
@@ -1930,7 +1932,11 @@ 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);