[UNIX]: Make the unix sysctl tables per-namespace
This is the core.
* add the ctl_table_header on the struct net;
* make the unix_sysctl_register and _unregister clone the table;
* moves calls to them into per-net init and exit callbacks;
* move the .data pointer in the proper place.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 73620d6..b8a2189 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2139,10 +2139,14 @@
int error = -ENOMEM;
net->sysctl_unix_max_dgram_qlen = 10;
+ if (unix_sysctl_register(net))
+ goto out;
#ifdef CONFIG_PROC_FS
- if (!proc_net_fops_create(net, "unix", 0, &unix_seq_fops))
+ if (!proc_net_fops_create(net, "unix", 0, &unix_seq_fops)) {
+ unix_sysctl_unregister(net);
goto out;
+ }
#endif
error = 0;
out:
@@ -2151,6 +2155,7 @@
static void unix_net_exit(struct net *net)
{
+ unix_sysctl_unregister(net);
proc_net_remove(net, "unix");
}
@@ -2175,7 +2180,6 @@
sock_register(&unix_family_ops);
register_pernet_subsys(&unix_net_ops);
- unix_sysctl_register(&init_net);
out:
return rc;
}
@@ -2183,7 +2187,6 @@
static void __exit af_unix_exit(void)
{
sock_unregister(PF_UNIX);
- unix_sysctl_unregister(&init_net);
proto_unregister(&unix_proto);
unregister_pernet_subsys(&unix_net_ops);
}