From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Marcel Holtmann To: linux-bluetooth@vger.kernel.org Subject: [PATCH] Bluetooth: Restrict ioctls to HCI raw channel sockets Date: Mon, 26 Aug 2013 09:39:55 -0700 Message-Id: <1377535195-12121-1-git-send-email-marcel@holtmann.org> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: The various legacy ioctls used with HCI sockets are limited to raw channel only. They are not used on the other channels and also have no meaning there. So return an error if tried to use them. Signed-off-by: Marcel Holtmann --- net/bluetooth/hci_sock.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index f92e913..ab57038 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -547,6 +547,15 @@ static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, BT_DBG("cmd %x arg %lx", cmd, arg); + lock_sock(sk); + + if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { + err = -EBADFD; + goto done; + } + + release_sock(sk); + switch (cmd) { case HCIGETDEVLIST: return hci_get_dev_list(argp); @@ -591,13 +600,15 @@ static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, case HCIINQUIRY: return hci_inquiry(argp); - - default: - lock_sock(sk); - err = hci_sock_bound_ioctl(sk, cmd, arg); - release_sock(sk); - return err; } + + lock_sock(sk); + + err = hci_sock_bound_ioctl(sk, cmd, arg); + +done: + release_sock(sk); + return err; } static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, -- 1.8.3.1