[NETLINK]: Set correct pid for ioctl originating netlink events

This patch ensures that netlink events created as a result of programns
using ioctls (such as ifconfig, route etc) contains the correct PID of
those events.
 
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index a9a44b4..c886b28 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -276,7 +276,7 @@
 	       struct nlmsghdr *n, struct netlink_skb_parms *req)
 {
 	struct sk_buff *skb;
-	u32 pid = req ? req->pid : 0;
+	u32 pid = req ? req->pid : n->nlmsg_pid;
 	int size = NLMSG_SPACE(sizeof(struct rtmsg)+256);
 
 	skb = alloc_skb(size, GFP_KERNEL);
@@ -1035,7 +1035,7 @@
 	}
 
 	nl->nlmsg_flags = NLM_F_REQUEST;
-	nl->nlmsg_pid = 0;
+	nl->nlmsg_pid = current->pid;
 	nl->nlmsg_seq = 0;
 	nl->nlmsg_len = NLMSG_LENGTH(sizeof(*rtm));
 	if (cmd == SIOCDELRT) {