[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/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 4d4cb46..47a30c3 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2873,7 +2873,7 @@
 		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFADDR, ENOBUFS);
 		return;
 	}
-	if (inet6_fill_ifaddr(skb, ifa, 0, 0, event, 0) < 0) {
+	if (inet6_fill_ifaddr(skb, ifa, current->pid, 0, event, 0) < 0) {
 		kfree_skb(skb);
 		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFADDR, EINVAL);
 		return;
@@ -3008,7 +3008,7 @@
 		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFINFO, ENOBUFS);
 		return;
 	}
-	if (inet6_fill_ifinfo(skb, idev, 0, 0, event, 0) < 0) {
+	if (inet6_fill_ifinfo(skb, idev, current->pid, 0, event, 0) < 0) {
 		kfree_skb(skb);
 		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFINFO, EINVAL);
 		return;
@@ -3065,7 +3065,7 @@
 		netlink_set_err(rtnl, 0, RTMGRP_IPV6_PREFIX, ENOBUFS);
 		return;
 	}
-	if (inet6_fill_prefix(skb, idev, pinfo, 0, 0, event, 0) < 0) {
+	if (inet6_fill_prefix(skb, idev, pinfo, current->pid, 0, event, 0) < 0) {
 		kfree_skb(skb);
 		netlink_set_err(rtnl, 0, RTMGRP_IPV6_PREFIX, EINVAL);
 		return;