From: Mark McLoughlin <markmc@redhat.com>
Date: Fri, 15 Aug 2008 22:09:56 +0000 (-0700)
Subject: tun: TUNGETIFF interface to query name and flags
X-Git-Tag: v2.6.27-rc4~39^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3b99556975907530aeb9745e7b3945a0da48f17;p=pandora-kernel.git

tun: TUNGETIFF interface to query name and flags

Add a TUNGETIFF interface so that userspace can query a
tun/tap descriptor for its name and flags.

This is needed because it is common for one app to create
a tap interface, exec another app and pass it the file
descriptor for the interface. Without TUNGETIFF the spawned
app has no way of detecting wheter the interface has e.g.
IFF_VNET_HDR set.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Acked-by: Max Krasnyansky <maxk@qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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