Bluetooth: Limit HCI raw socket options to actual raw sockets

Currently the socket options of HCI sockets can be set on raw and control
sockets, but on control sockets they make no sense. So just return EINVAL
in that case.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index b5b3bc8..612bc2a 100644 (file)
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -601,6 +601,11 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char
 
        lock_sock(sk);
 
+       if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) {
+               err = -EINVAL;
+               goto done;
+       }
+
        switch (optname) {
        case HCI_DATA_DIR:
                if (get_user(opt, (int __user *)optval)) {
@@ -663,6 +668,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char
                break;
        }
 
+done:
        release_sock(sk);
        return err;
 }