summaryrefslogtreecommitdiff
path: root/net/ipv4/inet_diag.c
diff options
context:
space:
mode:
authorAndrey Vagin <avagin@openvz.org>2012-07-16 04:28:49 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-16 22:31:34 -0700
commit51d7cccf07238f5236c5b9269231a30dd5f8e714 (patch)
tree1155d43b810d0f163276182be610d69c50e862d9 /net/ipv4/inet_diag.c
parentcbc89c8cf279b85edc95b4ae40a9e7e1edf2dfae (diff)
net: make sock diag per-namespace
Before this patch sock_diag works for init_net only and dumps information about sockets from all namespaces. This patch expands sock_diag for all name-spaces. It creates a netlink kernel socket for each netns and filters data during dumping. v2: filter accoding with netns in all places remove an unused variable. Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Pavel Emelyanov <xemul@parallels.com> CC: Eric Dumazet <eric.dumazet@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Andrew Vagin <avagin@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_diag.c')
-rw-r--r--net/ipv4/inet_diag.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 38064a285cca..570e61f9611f 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -272,16 +272,17 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s
int err;
struct sock *sk;
struct sk_buff *rep;
+ struct net *net = sock_net(in_skb->sk);
err = -EINVAL;
if (req->sdiag_family == AF_INET) {
- sk = inet_lookup(&init_net, hashinfo, req->id.idiag_dst[0],
+ sk = inet_lookup(net, hashinfo, req->id.idiag_dst[0],
req->id.idiag_dport, req->id.idiag_src[0],
req->id.idiag_sport, req->id.idiag_if);
}
#if IS_ENABLED(CONFIG_IPV6)
else if (req->sdiag_family == AF_INET6) {
- sk = inet6_lookup(&init_net, hashinfo,
+ sk = inet6_lookup(net, hashinfo,
(struct in6_addr *)req->id.idiag_dst,
req->id.idiag_dport,
(struct in6_addr *)req->id.idiag_src,
@@ -317,7 +318,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s
nlmsg_free(rep);
goto out;
}
- err = netlink_unicast(sock_diag_nlsk, rep, NETLINK_CB(in_skb).pid,
+ err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).pid,
MSG_DONTWAIT);
if (err > 0)
err = 0;
@@ -724,6 +725,7 @@ void inet_diag_dump_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *skb,
{
int i, num;
int s_i, s_num;
+ struct net *net = sock_net(skb->sk);
s_i = cb->args[1];
s_num = num = cb->args[2];
@@ -743,6 +745,9 @@ void inet_diag_dump_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *skb,
sk_nulls_for_each(sk, node, &ilb->head) {
struct inet_sock *inet = inet_sk(sk);
+ if (!net_eq(sock_net(sk), net))
+ continue;
+
if (num < s_num) {
num++;
continue;
@@ -813,6 +818,8 @@ skip_listen_ht:
sk_nulls_for_each(sk, node, &head->chain) {
struct inet_sock *inet = inet_sk(sk);
+ if (!net_eq(sock_net(sk), net))
+ continue;
if (num < s_num)
goto next_normal;
if (!(r->idiag_states & (1 << sk->sk_state)))
@@ -839,6 +846,8 @@ next_normal:
inet_twsk_for_each(tw, node,
&head->twchain) {
+ if (!net_eq(twsk_net(tw), net))
+ continue;
if (num < s_num)
goto next_dying;
@@ -943,6 +952,7 @@ static int inet_diag_get_exact_compat(struct sk_buff *in_skb,
static int inet_diag_rcv_msg_compat(struct sk_buff *skb, struct nlmsghdr *nlh)
{
int hdrlen = sizeof(struct inet_diag_req);
+ struct net *net = sock_net(skb->sk);
if (nlh->nlmsg_type >= INET_DIAG_GETSOCK_MAX ||
nlmsg_len(nlh) < hdrlen)
@@ -963,7 +973,7 @@ static int inet_diag_rcv_msg_compat(struct sk_buff *skb, struct nlmsghdr *nlh)
struct netlink_dump_control c = {
.dump = inet_diag_dump_compat,
};
- return netlink_dump_start(sock_diag_nlsk, skb, nlh, &c);
+ return netlink_dump_start(net->diag_nlsk, skb, nlh, &c);
}
}
@@ -973,6 +983,7 @@ static int inet_diag_rcv_msg_compat(struct sk_buff *skb, struct nlmsghdr *nlh)
static int inet_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h)
{
int hdrlen = sizeof(struct inet_diag_req_v2);
+ struct net *net = sock_net(skb->sk);
if (nlmsg_len(h) < hdrlen)
return -EINVAL;
@@ -991,7 +1002,7 @@ static int inet_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h)
struct netlink_dump_control c = {
.dump = inet_diag_dump,
};
- return netlink_dump_start(sock_diag_nlsk, skb, h, &c);
+ return netlink_dump_start(net->diag_nlsk, skb, h, &c);
}
}