From ef7a4bc3a76af66009cd8ba622627ca641bfc4b8 Mon Sep 17 00:00:00 2001 From: Daniel Wagner Date: Fri, 24 Aug 2012 14:16:39 +0200 Subject: [PATCH] gatchat: Print error message if opening tun failes This is a very common mistake. Let's help the users to configure their system correctly. --- gatchat/ppp_net.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/gatchat/ppp_net.c b/gatchat/ppp_net.c index 1609b99e..813ed9b5 100644 --- a/gatchat/ppp_net.c +++ b/gatchat/ppp_net.c @@ -155,8 +155,12 @@ struct ppp_net *ppp_net_new(GAtPPP *ppp, int fd) if (fd < 0) { /* open a tun interface */ fd = open("/dev/net/tun", O_RDWR); - if (fd < 0) + if (fd < 0) { + ppp_debug(ppp, "Couldn't open tun device. " + "Do you run oFono as root and do you " + "have the TUN module loaded?"); goto error; + } ifr.ifr_flags = IFF_TUN | IFF_NO_PI; strcpy(ifr.ifr_name, "ppp%d");