[dm-devel] [PATCH 5/8] dm/connector: Only process connector packages from privileged processes

[Philipp Reisner <philipp reisner linbit com>]

Signed-off-by: Philipp Reisner <philipp reisner linbit com>
---
 drivers/md/dm-log-userspace-transfer.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c
index 1327e1a..54abf9e 100644
--- a/drivers/md/dm-log-userspace-transfer.c
+++ b/drivers/md/dm-log-userspace-transfer.c
@@ -133,6 +133,9 @@ static void cn_ulog_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
 {
 	struct dm_ulog_request *tfr = (struct dm_ulog_request *)(msg + 1);
 
+	if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN))
+		return;
+
 	spin_lock(&receiving_list_lock);
 	if (msg->len == 0)
 		fill_pkg(msg, NULL);
-- 
1.6.0.4