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author | Gao feng <gaofeng@cn.fujitsu.com> | 2013-03-24 23:50:41 +0000 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-04-05 20:57:27 +0200 |
commit | 7d2789246cc9423d66d903f992d13a022710592a (patch) | |
tree | 211354c39c1467fdca88dc7593227e194b62f140 /net/bridge/netfilter/ebt_log.c | |
parent | 30e0c6a6bee24db0166b7ca709277cd693e179f2 (diff) | |
download | op-kernel-dev-7d2789246cc9423d66d903f992d13a022710592a.zip op-kernel-dev-7d2789246cc9423d66d903f992d13a022710592a.tar.gz |
netfilter: ebt_log: add net namespace support for ebt_log
Add pernet support to ebt_log by means of the new nf_log_set
function added in (30e0c6a netfilter: nf_log: prepare net
namespace support for loggers).
Since syslog ns has yet not been implemented, we don't want
the containers to DDOS host's syslogd. So only enable ebt_log
only from init_net and wait for syslog ns support.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/bridge/netfilter/ebt_log.c')
-rw-r--r-- | net/bridge/netfilter/ebt_log.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/net/bridge/netfilter/ebt_log.c b/net/bridge/netfilter/ebt_log.c index 08e5ea5..9878eb8 100644 --- a/net/bridge/netfilter/ebt_log.c +++ b/net/bridge/netfilter/ebt_log.c @@ -78,6 +78,11 @@ ebt_log_packet(u_int8_t pf, unsigned int hooknum, const char *prefix) { unsigned int bitmask; + struct net *net = dev_net(in ? in : out); + + /* FIXME: Disabled from containers until syslog ns is supported */ + if (!net_eq(net, &init_net)) + return; spin_lock_bh(&ebt_log_lock); printk(KERN_SOH "%c%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x", @@ -207,19 +212,47 @@ static struct nf_logger ebt_log_logger __read_mostly = { .me = THIS_MODULE, }; +static int __net_init ebt_log_net_init(struct net *net) +{ + nf_log_set(net, NFPROTO_BRIDGE, &ebt_log_logger); + return 0; +} + +static void __net_exit ebt_log_net_fini(struct net *net) +{ + nf_log_unset(net, &ebt_log_logger); +} + +static struct pernet_operations ebt_log_net_ops = { + .init = ebt_log_net_init, + .exit = ebt_log_net_fini, +}; + static int __init ebt_log_init(void) { int ret; + ret = register_pernet_subsys(&ebt_log_net_ops); + if (ret < 0) + goto err_pernet; + ret = xt_register_target(&ebt_log_tg_reg); if (ret < 0) - return ret; + goto err_target; + nf_log_register(NFPROTO_BRIDGE, &ebt_log_logger); - return 0; + + return ret; + +err_target: + unregister_pernet_subsys(&ebt_log_net_ops); +err_pernet: + return ret; } static void __exit ebt_log_fini(void) { + unregister_pernet_subsys(&ebt_log_net_ops); nf_log_unregister(&ebt_log_logger); xt_unregister_target(&ebt_log_tg_reg); } |