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authorDmitry Mishin <dim@openvz.org>2006-03-20 22:45:21 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:45:21 -0800
commit3fdadf7d27e3fbcf72930941884387d1f4936f04 (patch)
tree167072cf1e60b6b307610563614b435ff0caa52d /net/netfilter
parentc750360938b403e6cc193d293cfbcb099dd6c60e (diff)
[NET]: {get|set}sockopt compatibility layer
This patch extends {get|set}sockopt compatibility layer in order to move protocol specific parts to their place and avoid huge universal net/compat.c file in the future. Signed-off-by: Dmitry Mishin <dim@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter')
-rw-r--r--net/netfilter/nf_sockopt.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
index 0e5c5e20479..da1cd48de21 100644
--- a/net/netfilter/nf_sockopt.c
+++ b/net/netfilter/nf_sockopt.c
@@ -131,3 +131,72 @@ int nf_getsockopt(struct sock *sk, int pf, int val, char __user *opt, int *len)
}
EXPORT_SYMBOL(nf_getsockopt);
+#ifdef CONFIG_COMPAT
+static int compat_nf_sockopt(struct sock *sk, int pf, int val,
+ char __user *opt, int *len, int get)
+{
+ struct list_head *i;
+ struct nf_sockopt_ops *ops;
+ int ret;
+
+ if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
+ return -EINTR;
+
+ list_for_each(i, &nf_sockopts) {
+ ops = (struct nf_sockopt_ops *)i;
+ if (ops->pf == pf) {
+ if (get) {
+ if (val >= ops->get_optmin
+ && val < ops->get_optmax) {
+ ops->use++;
+ mutex_unlock(&nf_sockopt_mutex);
+ if (ops->compat_get)
+ ret = ops->compat_get(sk,
+ val, opt, len);
+ else
+ ret = ops->get(sk,
+ val, opt, len);
+ goto out;
+ }
+ } else {
+ if (val >= ops->set_optmin
+ && val < ops->set_optmax) {
+ ops->use++;
+ mutex_unlock(&nf_sockopt_mutex);
+ if (ops->compat_set)
+ ret = ops->compat_set(sk,
+ val, opt, *len);
+ else
+ ret = ops->set(sk,
+ val, opt, *len);
+ goto out;
+ }
+ }
+ }
+ }
+ mutex_unlock(&nf_sockopt_mutex);
+ return -ENOPROTOOPT;
+
+ out:
+ mutex_lock(&nf_sockopt_mutex);
+ ops->use--;
+ if (ops->cleanup_task)
+ wake_up_process(ops->cleanup_task);
+ mutex_unlock(&nf_sockopt_mutex);
+ return ret;
+}
+
+int compat_nf_setsockopt(struct sock *sk, int pf,
+ int val, char __user *opt, int len)
+{
+ return compat_nf_sockopt(sk, pf, val, opt, &len, 0);
+}
+EXPORT_SYMBOL(compat_nf_setsockopt);
+
+int compat_nf_getsockopt(struct sock *sk, int pf,
+ int val, char __user *opt, int *len)
+{
+ return compat_nf_sockopt(sk, pf, val, opt, len, 1);
+}
+EXPORT_SYMBOL(compat_nf_getsockopt);
+#endif