coverity: #1248104

Argument cannot be negative Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

coverity: #1248104
e958e727 · Christian Brauner · 6aea671c · e958e727
Unverified Commit e958e727 authored May 01, 2018 by Christian Brauner
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network.c src/lxc/network.c +2 -0

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--- a/src/lxc/network.c
+++ b/src/lxc/network.c
@@ -592,6 +592,8 @@ static char *is_wlan(const char *ifname)
 	fseek(f, 0, SEEK_END);
 	physlen = ftell(f);
 	fseek(f, 0, SEEK_SET);
+	if (physlen < 0)
+		goto bad;
 	physname = malloc(physlen + 1);
 	if (!physname) {