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[NETNS][IPV6] udp - make proc handle the network namespace 

This patch makes the common udp proc functions to take care of which
socket they should show taking into account the namespace it belongs.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Lezcano 2008-03-21 04:11:58 -07:00 committed by David S. Miller
parent ea82edf704
commit a91275eff4
2 changed files with 29 additions and 4 deletions
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1
include/net/udp.h
View File

@ -192,6 +192,7 @@ struct udp_seq_afinfo {
};
struct udp_iter_state {
struct net *net;
sa_family_t family;
struct hlist_head *hashtable;
int bucket;

32
net/ipv4/udp.c
View File

@ -1512,10 +1512,13 @@ static struct sock *udp_get_first(struct seq_file *seq)
{
struct sock *sk;
struct udp_iter_state *state = seq->private;
struct net *net = state->net;
for (state->bucket = 0; state->bucket < UDP_HTABLE_SIZE; ++state->bucket) {
struct hlist_node *node;
sk_for_each(sk, node, state->hashtable + state->bucket) {
if (sk->sk_net != net)
continue;
if (sk->sk_family == state->family)
goto found;
}
@ -1528,12 +1531,13 @@ found:
static struct sock *udp_get_next(struct seq_file *seq, struct sock *sk)
{
struct udp_iter_state *state = seq->private;
struct net *net = state->net;
do {
sk = sk_next(sk);
try_again:
;
} while (sk && sk->sk_family != state->family);
} while (sk && sk->sk_net != net && sk->sk_family != state->family);
if (!sk && ++state->bucket < UDP_HTABLE_SIZE) {
sk = sk_head(state->hashtable + state->bucket);
@ -1582,31 +1586,51 @@ static int udp_seq_open(struct inode *inode, struct file *file)
{
struct udp_seq_afinfo *afinfo = PDE(inode)->data;
struct seq_file *seq;
struct net *net;
int rc = -ENOMEM;
struct udp_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL);
if (!s)
goto out;
rc = -ENXIO;
net = get_proc_net(inode);
if (!net)
goto out_kfree;
s->family = afinfo->family;
s->hashtable = afinfo->hashtable;
s->seq_ops.start = udp_seq_start;
s->seq_ops.next = udp_seq_next;
s->seq_ops.show = afinfo->seq_show;
s->seq_ops.stop = udp_seq_stop;
s->net = net;
rc = seq_open(file, &s->seq_ops);
if (rc)
goto out_kfree;
goto out_put_net;
seq = file->private_data;
seq = file->private_data;
seq->private = s;
out:
return rc;
out_put_net:
put_net(net);
out_kfree:
kfree(s);
goto out;
}
static int udp_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct udp_iter_state *s = seq->private;
put_net(s->net);
seq_release_private(inode, file);
return 0;
}
/* ------------------------------------------------------------------------ */
int udp_proc_register(struct udp_seq_afinfo *afinfo)
{
@ -1619,7 +1643,7 @@ int udp_proc_register(struct udp_seq_afinfo *afinfo)
afinfo->seq_fops->open = udp_seq_open;
afinfo->seq_fops->read = seq_read;
afinfo->seq_fops->llseek = seq_lseek;
afinfo->seq_fops->release = seq_release_private;
afinfo->seq_fops->release = udp_seq_release;
p = proc_net_fops_create(&init_net, afinfo->name, S_IRUGO, afinfo->seq_fops);
if (p)