diff options
| author | Pablo Neira Ayuso | 2009-03-23 13:21:06 +0100 |
|---|---|---|
| committer | Patrick McHardy | 2009-03-23 13:21:06 +0100 |
| commit | dd5b6ce6fd465eab90357711c8e8124dc3a31ff0 (patch) | |
| tree | ebc40b018356e8cac36ba575e3f183c1a16b782b | |
| parent | 176252746ebbc8db97e304345af1f2563c7dc139 (diff) | |
nefilter: nfnetlink: add nfnetlink_set_err and use it in ctnetlink
This patch adds nfnetlink_set_err() to propagate the error to netlink
broadcast listener in case of memory allocation errors in the
message building.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
| -rw-r--r-- | include/linux/netfilter/nfnetlink.h | 1 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 2 | ||||
| -rw-r--r-- | net/netfilter/nfnetlink.c | 6 | ||||
| -rw-r--r-- | net/netlink/af_netlink.c | 1 |
4 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h index 7d8e0455ccac..135e5cfe68a2 100644 --- a/include/linux/netfilter/nfnetlink.h +++ b/include/linux/netfilter/nfnetlink.h @@ -76,6 +76,7 @@ extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n); extern int nfnetlink_has_listeners(unsigned int group); extern int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, int echo); +extern void nfnetlink_set_err(u32 pid, u32 group, int error); extern int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags); extern void nfnl_lock(void); diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index d1fe9d15ac5c..1b75c9efb0eb 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -518,6 +518,7 @@ static int ctnetlink_conntrack_event(struct notifier_block *this, nla_put_failure: rcu_read_unlock(); nlmsg_failure: + nfnetlink_set_err(0, group, -ENOBUFS); kfree_skb(skb); return NOTIFY_DONE; } @@ -1514,6 +1515,7 @@ static int ctnetlink_expect_event(struct notifier_block *this, nla_put_failure: rcu_read_unlock(); nlmsg_failure: + nfnetlink_set_err(0, 0, -ENOBUFS); kfree_skb(skb); return NOTIFY_DONE; } diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 9c0ba17a1ddb..2785d66a7e38 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -113,6 +113,12 @@ int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, int echo) } EXPORT_SYMBOL_GPL(nfnetlink_send); +void nfnetlink_set_err(u32 pid, u32 group, int error) +{ + netlink_set_err(nfnl, pid, group, error); +} +EXPORT_SYMBOL_GPL(nfnetlink_set_err); + int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags) { return netlink_unicast(nfnl, skb, pid, flags); diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 6ee69c27f806..5b33879c6422 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1106,6 +1106,7 @@ void netlink_set_err(struct sock *ssk, u32 pid, u32 group, int code) read_unlock(&nl_table_lock); } +EXPORT_SYMBOL(netlink_set_err); /* must be called with netlink table grabbed */ static void netlink_update_socket_mc(struct netlink_sock *nlk, |