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[NETNS][IPV6]: inet6_addr - isolate inet6 addresses from proc file
Make /proc/net/if_inet6 show only inet6 addresses belonging to the namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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39971554d3
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3c40090a0f
@ -2736,6 +2736,7 @@ static void addrconf_dad_run(struct inet6_dev *idev) {
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#ifdef CONFIG_PROC_FS
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struct if6_iter_state {
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struct seq_net_private p;
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int bucket;
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};
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@ -2743,9 +2744,13 @@ static struct inet6_ifaddr *if6_get_first(struct seq_file *seq)
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{
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struct inet6_ifaddr *ifa = NULL;
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struct if6_iter_state *state = seq->private;
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struct net *net = state->p.net;
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for (state->bucket = 0; state->bucket < IN6_ADDR_HSIZE; ++state->bucket) {
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ifa = inet6_addr_lst[state->bucket];
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while (ifa && ifa->idev->dev->nd_net != net)
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ifa = ifa->lst_next;
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if (ifa)
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break;
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}
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@ -2755,13 +2760,22 @@ static struct inet6_ifaddr *if6_get_first(struct seq_file *seq)
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static struct inet6_ifaddr *if6_get_next(struct seq_file *seq, struct inet6_ifaddr *ifa)
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{
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struct if6_iter_state *state = seq->private;
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struct net *net = state->p.net;
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ifa = ifa->lst_next;
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try_again:
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if (ifa) {
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if (ifa->idev->dev->nd_net != net) {
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ifa = ifa->lst_next;
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goto try_again;
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}
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}
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if (!ifa && ++state->bucket < IN6_ADDR_HSIZE) {
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ifa = inet6_addr_lst[state->bucket];
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goto try_again;
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}
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return ifa;
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}
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@ -2818,8 +2832,8 @@ static const struct seq_operations if6_seq_ops = {
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static int if6_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open_private(file, &if6_seq_ops,
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sizeof(struct if6_iter_state));
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return seq_open_net(inode, file, &if6_seq_ops,
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sizeof(struct if6_iter_state));
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}
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static const struct file_operations if6_fops = {
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@ -2827,19 +2841,34 @@ static const struct file_operations if6_fops = {
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.open = if6_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release_private,
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.release = seq_release_net,
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};
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int __init if6_proc_init(void)
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static int if6_proc_net_init(struct net *net)
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{
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if (!proc_net_fops_create(&init_net, "if_inet6", S_IRUGO, &if6_fops))
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if (!proc_net_fops_create(net, "if_inet6", S_IRUGO, &if6_fops))
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return -ENOMEM;
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return 0;
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}
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static void if6_proc_net_exit(struct net *net)
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{
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proc_net_remove(net, "if_inet6");
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}
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static struct pernet_operations if6_proc_net_ops = {
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.init = if6_proc_net_init,
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.exit = if6_proc_net_exit,
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};
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int __init if6_proc_init(void)
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{
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return register_pernet_subsys(&if6_proc_net_ops);
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}
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void if6_proc_exit(void)
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{
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proc_net_remove(&init_net, "if_inet6");
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unregister_pernet_subsys(&if6_proc_net_ops);
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}
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#endif /* CONFIG_PROC_FS */
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