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authorPavel Emelyanov <xemul@openvz.org>2007-12-01 23:51:01 +1100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:55:23 -0800
commit1597fbc0faf88c42edb3fe42e92e53b83c3f120e (patch)
tree17a56a96af0e00a1af452f0530997585803b6c7b /net
parent1d430b913c2e6293a80a4a422406bc9489a476ad (diff)
[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>
Diffstat (limited to 'net')
-rw-r--r--net/unix/af_unix.c9
-rw-r--r--net/unix/sysctl_net_unix.c27
2 files changed, 28 insertions, 8 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 73620d61762b..b8a2189fb5c0 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -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);
}
diff --git a/net/unix/sysctl_net_unix.c b/net/unix/sysctl_net_unix.c
index 43dd356730fd..553ef6a487d0 100644
--- a/net/unix/sysctl_net_unix.c
+++ b/net/unix/sysctl_net_unix.c
@@ -32,16 +32,33 @@ static struct ctl_path unix_path[] = {
{ },
};
-static struct ctl_table_header * unix_sysctl_header;
-
int unix_sysctl_register(struct net *net)
{
- unix_sysctl_header = register_sysctl_paths(unix_path, unix_table);
- return unix_sysctl_header == NULL ? -ENOMEM : 0;
+ struct ctl_table *table;
+
+ table = kmemdup(unix_table, sizeof(unix_table), GFP_KERNEL);
+ if (table == NULL)
+ goto err_alloc;
+
+ table[0].data = &net->sysctl_unix_max_dgram_qlen;
+ net->unix_ctl = register_net_sysctl_table(net, unix_path, table);
+ if (net->unix_ctl == NULL)
+ goto err_reg;
+
+ return 0;
+
+err_reg:
+ kfree(table);
+err_alloc:
+ return -ENOMEM;
}
void unix_sysctl_unregister(struct net *net)
{
- unregister_sysctl_table(unix_sysctl_header);
+ struct ctl_table *table;
+
+ table = net->unix_ctl->ctl_table_arg;
+ unregister_sysctl_table(net->unix_ctl);
+ kfree(table);
}

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