netns: ebtable: allow unprivileged users to operate ebtables
ebt_table is a private resource of netns, operating ebtables in one netns will not affect other netns, we can allow the creator user of userns and netns to change the ebtables. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
c5c351088a
Коммит
bb12b8b26e
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@ -1472,16 +1472,17 @@ static int do_ebt_set_ctl(struct sock *sk,
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int cmd, void __user *user, unsigned int len)
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{
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int ret;
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struct net *net = sock_net(sk);
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if (!capable(CAP_NET_ADMIN))
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if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
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return -EPERM;
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switch(cmd) {
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case EBT_SO_SET_ENTRIES:
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ret = do_replace(sock_net(sk), user, len);
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ret = do_replace(net, user, len);
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break;
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case EBT_SO_SET_COUNTERS:
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ret = update_counters(sock_net(sk), user, len);
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ret = update_counters(net, user, len);
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break;
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default:
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ret = -EINVAL;
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@ -1494,14 +1495,15 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
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int ret;
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struct ebt_replace tmp;
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struct ebt_table *t;
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struct net *net = sock_net(sk);
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if (!capable(CAP_NET_ADMIN))
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if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
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return -EPERM;
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if (copy_from_user(&tmp, user, sizeof(tmp)))
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return -EFAULT;
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t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
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t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
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if (!t)
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return ret;
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@ -2279,16 +2281,17 @@ static int compat_do_ebt_set_ctl(struct sock *sk,
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int cmd, void __user *user, unsigned int len)
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{
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int ret;
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struct net *net = sock_net(sk);
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if (!capable(CAP_NET_ADMIN))
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if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
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return -EPERM;
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switch (cmd) {
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case EBT_SO_SET_ENTRIES:
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ret = compat_do_replace(sock_net(sk), user, len);
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ret = compat_do_replace(net, user, len);
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break;
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case EBT_SO_SET_COUNTERS:
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ret = compat_update_counters(sock_net(sk), user, len);
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ret = compat_update_counters(net, user, len);
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break;
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default:
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ret = -EINVAL;
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@ -2302,8 +2305,9 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
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int ret;
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struct compat_ebt_replace tmp;
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struct ebt_table *t;
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struct net *net = sock_net(sk);
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if (!capable(CAP_NET_ADMIN))
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if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
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return -EPERM;
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/* try real handler in case userland supplied needed padding */
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@ -2314,7 +2318,7 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
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if (copy_from_user(&tmp, user, sizeof(tmp)))
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return -EFAULT;
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t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
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t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
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if (!t)
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return ret;
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