diff options
Diffstat (limited to '')
| -rw-r--r-- | net/core/rtnetlink.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 60c928894a78..c49097237c30 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1845,7 +1845,15 @@ static bool link_dump_filtered(struct net_device *dev, return false; } -static struct net *get_target_net(struct sock *sk, int netnsid) +/** + * rtnl_get_net_ns_capable - Get netns if sufficiently privileged. + * @sk: netlink socket + * @netnsid: network namespace identifier + * + * Returns the network namespace identified by netnsid on success or an error + * pointer on failure. + */ +struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid) { struct net *net; @@ -1862,6 +1870,7 @@ static struct net *get_target_net(struct sock *sk, int netnsid) } return net; } +EXPORT_SYMBOL_GPL(rtnl_get_net_ns_capable); static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) { @@ -1897,7 +1906,7 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) ifla_policy, NULL) >= 0) { if (tb[IFLA_IF_NETNSID]) { netnsid = nla_get_s32(tb[IFLA_IF_NETNSID]); - tgt_net = get_target_net(skb->sk, netnsid); + tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid); if (IS_ERR(tgt_net)) { tgt_net = net; netnsid = -1; @@ -2765,7 +2774,7 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, if (tb[IFLA_IF_NETNSID]) { netnsid = nla_get_s32(tb[IFLA_IF_NETNSID]); - tgt_net = get_target_net(NETLINK_CB(skb).sk, netnsid); + tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); if (IS_ERR(tgt_net)) return PTR_ERR(tgt_net); } @@ -3175,7 +3184,7 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh, if (tb[IFLA_IF_NETNSID]) { netnsid = nla_get_s32(tb[IFLA_IF_NETNSID]); - tgt_net = get_target_net(NETLINK_CB(skb).sk, netnsid); + tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); if (IS_ERR(tgt_net)) return PTR_ERR(tgt_net); } |