loopback: Return a More Descriptive Error Code

Return a more descriptive -errno rather than -1 when we fail to create
a socket.

diff --git a/plugins/loopback.c b/plugins/loopback.c
index 6cd5b85..ba8f51a 100644 (file)
--- a/plugins/loopback.c
+++ b/plugins/loopback.c
@@ -220,7 +220,7 @@ static int setup_loopback(void)
 
        sk = socket(PF_INET, SOCK_DGRAM, 0);
        if (sk < 0)
-               return -1;
+               return -errno;
 
        memset(&ifr, 0, sizeof(ifr));
        strcpy(ifr.ifr_name, "lo");