coverity: #1425888

check return value of getifaddrs() Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

coverity: #1425888
ca4bad79 · Christian Brauner · 7641e5d7 · ca4bad79
Unverified Commit ca4bad79 authored Dec 07, 2017 by Christian Brauner
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network.c src/lxc/network.c +6 -1

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--- a/src/lxc/network.c
+++ b/src/lxc/network.c
@@ -1915,6 +1915,7 @@ static const char padchar[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";

 char *lxc_mkifname(char *template)
 {
+	int ret;
 	unsigned int seed;
 	FILE *urandom;
 	struct ifaddrs *ifa, *ifaddr;
@@ -1926,7 +1927,11 @@ char *lxc_mkifname(char *template)
 		return NULL;

 	/* Get all the network interfaces. */
-	getifaddrs(&ifaddr);
+	ret = getifaddrs(&ifaddr);
+	if (ret < 0) {
+		ERROR("%s - Failed to get network interfaces", strerror(errno));
+		return NULL;
+	}

 	/* Initialize the random number generator. */
 	urandom = fopen("/dev/urandom", "r");