Commit 2feb27db authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by David S. Miller

[NETNS]: Minor information leak via /proc/net/ptype file.

This file displays the registered packet types, but some of them
(packet sockets creates such) can be bound to a net device and showing
them in a wrong namespace is not correct.
Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 84c375af
......@@ -2615,7 +2615,7 @@ static int ptype_seq_show(struct seq_file *seq, void *v)
if (v == SEQ_START_TOKEN)
seq_puts(seq, "Type Device Function\n");
else {
else if (pt->dev == NULL || pt->dev->nd_net == seq_file_net(seq)) {
if (pt->type == htons(ETH_P_ALL))
seq_puts(seq, "ALL ");
else
......@@ -2639,7 +2639,8 @@ static const struct seq_operations ptype_seq_ops = {
static int ptype_seq_open(struct inode *inode, struct file *file)
{
return seq_open(file, &ptype_seq_ops);
return seq_open_net(inode, file, &ptype_seq_ops,
sizeof(struct seq_net_private));
}
static const struct file_operations ptype_seq_fops = {
......@@ -2647,7 +2648,7 @@ static const struct file_operations ptype_seq_fops = {
.open = ptype_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
.release = seq_release_net,
};
......
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