---

yaml --- r: 150032 b: refs/heads/master c: f85ba78 h: refs/heads/master v: v3
git-mirror · Apr 27, 2009 · 698f560 · 698f560
1 parent 7b9eb1c
commit 698f560
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Showing 3 changed files with 4 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0456b4f8b742006c2b79fcbe6b0736aa1ad39180
+refs/heads/master: f85ba78068ac137fe9c1f50d25405d2783d75c77
diff --git a/trunk/drivers/net/tun.c b/trunk/drivers/net/tun.c
@@ -874,6 +874,8 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
 
 	dev = __dev_get_by_name(net, ifr->ifr_name);
 	if (dev) {
+		if (ifr->ifr_flags & IFF_TUN_EXCL)
+			return -EBUSY;
 		if ((ifr->ifr_flags & IFF_TUN) && dev->netdev_ops == &tun_netdev_ops)
 			tun = netdev_priv(dev);
 		else if ((ifr->ifr_flags & IFF_TAP) && dev->netdev_ops == &tap_netdev_ops)

diff --git a/trunk/include/linux/if_tun.h b/trunk/include/linux/if_tun.h
@@ -55,6 +55,7 @@
 #define IFF_NO_PI	0x1000
 #define IFF_ONE_QUEUE	0x2000
 #define IFF_VNET_HDR	0x4000
+#define IFF_TUN_EXCL	0x8000
 
 /* Features for GSO (TUNSETOFFLOAD). */
 #define TUN_F_CSUM	0x01	/* You can hand me unchecksummed packets. */