netfilter: enable per netns support for nf_loggers

After this patch, all nf_loggers support net namespace. Still
xt_LOG and ebt_log require syslog netns support.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 8d331dc..388656d 100644 (file)
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -35,9 +35,6 @@ void nf_log_set(struct net *net, u_int8_t pf, const struct nf_logger *logger)
 {
        const struct nf_logger *log;
 
-       if (!net_eq(net, &init_net))
-               return;
-
        if (pf == NFPROTO_UNSPEC)
                return;
 
@@ -56,9 +53,6 @@ void nf_log_unset(struct net *net, const struct nf_logger *logger)
        int i;
        const struct nf_logger *log;
 
-       if (!net_eq(net, &init_net))
-               return;
-
        mutex_lock(&nf_log_mutex);
        for (i = 0; i < NFPROTO_NUMPROTO; i++) {
                log = rcu_dereference_protected(net->nf.nf_loggers[i],
@@ -94,7 +88,6 @@ int nf_log_register(u_int8_t pf, struct nf_logger *logger)
 
        mutex_unlock(&nf_log_mutex);
 
-       nf_log_set(&init_net, pf, logger);
        return 0;
 }
 EXPORT_SYMBOL(nf_log_register);
@@ -107,17 +100,12 @@ void nf_log_unregister(struct nf_logger *logger)
        for (i = 0; i < NFPROTO_NUMPROTO; i++)
                list_del(&logger->list[i]);
        mutex_unlock(&nf_log_mutex);
-
-       nf_log_unset(&init_net, logger);
 }
 EXPORT_SYMBOL(nf_log_unregister);
 
 int nf_log_bind_pf(struct net *net, u_int8_t pf,
                   const struct nf_logger *logger)
 {
-       if (!net_eq(net, &init_net))
-               return 0;
-
        if (pf >= ARRAY_SIZE(net->nf.nf_loggers))
                return -EINVAL;
        mutex_lock(&nf_log_mutex);
@@ -133,9 +121,6 @@ EXPORT_SYMBOL(nf_log_bind_pf);
 
 void nf_log_unbind_pf(struct net *net, u_int8_t pf)
 {
-       if (!net_eq(net, &init_net))
-               return;
-
        if (pf >= ARRAY_SIZE(net->nf.nf_loggers))
                return;
        mutex_lock(&nf_log_mutex);
@@ -157,9 +142,6 @@ void nf_log_packet(struct net *net,
        char prefix[NF_LOG_PREFIXLEN];
        const struct nf_logger *logger;
 
-       if (!net_eq(net, &init_net))
-               return;
-
        rcu_read_lock();
        logger = rcu_dereference(net->nf.nf_loggers[pf]);
        if (logger) {
@@ -274,9 +256,6 @@ static int nf_log_proc_dostring(ctl_table *table, int write,
        struct net *net = current->nsproxy->net_ns;
 
        if (write) {
-               if (!net_eq(net, &init_net))
-                       return -EPERM;
-
                if (size > sizeof(buf))
                        size = sizeof(buf);
                if (copy_from_user(buf, buffer, size))