sky2: sky2 FE+ receive status workaround

[linux-2.6-omap-h63xx.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index a2c6caaaae932a672a34058619f6998ee8e7bc59..62b2b3005019c90865ef0f019f16d8d2607089f0 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -432,6 +432,7 @@ static void tun_setup(struct net_device *dev)
        init_waitqueue_head(&tun->read_wait);
 
        tun->owner = -1;
+       tun->group = -1;
 
        SET_MODULE_OWNER(dev);
        dev->open = tun_net_open;
@@ -467,8 +468,11 @@ static int tun_set_iff(struct file *file, struct ifreq *ifr)
                        return -EBUSY;
 
                /* Check permissions */
-               if (tun->owner != -1 &&
-                   current->euid != tun->owner && !capable(CAP_NET_ADMIN))
+               if (((tun->owner != -1 &&
+                     current->euid != tun->owner) ||
+                    (tun->group != -1 &&
+                     current->egid != tun->group)) &&
+                    !capable(CAP_NET_ADMIN))
                        return -EPERM;
        }
        else if (__dev_get_by_name(ifr->ifr_name))
@@ -610,6 +614,13 @@ static int tun_chr_ioctl(struct inode *inode, struct file *file,
                DBG(KERN_INFO "%s: owner set to %d\n", tun->dev->name, tun->owner);
                break;
 
+       case TUNSETGROUP:
+               /* Set group of the device */
+               tun->group= (gid_t) arg;
+
+               DBG(KERN_INFO "%s: group set to %d\n", tun->dev->name, tun->group);
+               break;
+
        case TUNSETLINK:
                /* Only allow setting the type when the interface is down */
                if (tun->dev->flags & IFF_UP) {