From 9d43a18c6e8f868111b983388feeedaea7594fef Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 10 Jan 2013 01:31:08 +0000 Subject: [PATCH 1/1] tun: avoid owner checks on IFF_ATTACH_QUEUE At the moment, we check owner when we enable queue in tun. This seems redundant and will break some valid uses where fd is passed around: I think TUNSETOWNER is there to prevent others from attaching to a persistent device not owned by them. Here the fd is already attached, enabling/disabling queue is more like read/write. Signed-off-by: Michael S. Tsirkin Reviewed-by: Stefan Hajnoczi Signed-off-by: David S. Miller --- drivers/net/tun.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index cf6da6efc71..99b58d86217 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1791,8 +1791,6 @@ static int tun_set_queue(struct file *file, struct ifreq *ifr) tun = tfile->detached; if (!tun) ret = -EINVAL; - else if (tun_not_capable(tun)) - ret = -EPERM; else ret = tun_attach(tun, file); } else if (ifr->ifr_flags & IFF_DETACH_QUEUE) { -- 2.43.2