From 59c28058fa7bb1cc7ab8b2c5607093cbbefafeb4 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Fri, 18 Jan 2019 10:46:13 -0800 Subject: net: netlink: add helper to retrieve NETLINK_F_STRICT_CHK Dumps can read state of the NETLINK_F_STRICT_CHK flag from a field in the callback structure. For non-dump GET requests we need a way to access the state of that flag from a socket. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller --- net/netlink/af_netlink.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'net') diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 3c023d6120f6..8fa35df94c07 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1371,6 +1371,14 @@ int netlink_has_listeners(struct sock *sk, unsigned int group) } EXPORT_SYMBOL_GPL(netlink_has_listeners); +bool netlink_strict_get_check(struct sk_buff *skb) +{ + const struct netlink_sock *nlk = nlk_sk(NETLINK_CB(skb).sk); + + return nlk->flags & NETLINK_F_STRICT_CHK; +} +EXPORT_SYMBOL_GPL(netlink_strict_get_check); + static int netlink_broadcast_deliver(struct sock *sk, struct sk_buff *skb) { struct netlink_sock *nlk = nlk_sk(sk); -- cgit