pohmelfs/connector: Disallow unpliviged users to configure pohmelfs

(cherry picked from commit 0179065b13b354cc0b940e7a632a65ec0448beff)

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/pohmelfs/config.c b/drivers/staging/pohmelfs/config.c
index 1b4d56412f7da0efc33018648856b0105490201b..d8ec47a6ee0673a4a59e80d67b5807ada287e497 100644 (file)
--- a/drivers/staging/pohmelfs/config.c
+++ b/drivers/staging/pohmelfs/config.c
@@ -450,6 +450,9 @@ static void pohmelfs_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *n
 {
        int err;
 
+       if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN))
+               return;
+
        switch (msg->flags) {
                case POHMELFS_FLAGS_ADD:
                case POHMELFS_FLAGS_DEL: