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[UNIX]: Make the unix sysctl tables per-namespace

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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>
This commit is contained in:
Pavel Emelyanov 2007-12-01 23:51:01 +11:00 • committed by David S. Miller
parent 1d430b913c
commit 1597fbc0fa
3 changed files with 31 additions and 8 deletions
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9
net/unix/af_unix.c
View file

@ -2139,10 +2139,14 @@ static int unix_net_init(struct net *net)
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 @@ out:
static void unix_net_exit(struct net *net)
{
unix_sysctl_unregister(net);
proc_net_remove(net, "unix");
}
@ -2175,7 +2180,6 @@ static int __init af_unix_init(void)
sock_register(&unix_family_ops);
register_pernet_subsys(&unix_net_ops);
unix_sysctl_register(&init_net);
out:
return rc;
}
@ -2183,7 +2187,6 @@ out:
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);
}