diff options
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index ef3b65514976..60d0a4e60ec5 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -3102,6 +3102,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, tun_debug(KERN_INFO, tun, "tun_chr_ioctl cmd %u\n", cmd); + net = dev_net(tun->dev); ret = 0; switch (cmd) { case TUNGETIFF: @@ -3327,6 +3328,13 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, ret = tun_net_change_carrier(tun->dev, (bool)carrier); break; + case TUNGETDEVNETNS: + ret = -EPERM; + if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) + goto unlock; + ret = open_related_ns(&net->ns, get_net_ns); + break; + default: ret = -EINVAL; break; |