From dbbccdc4ced015cdd4051299bd87fbe0254ad351 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Mon, 21 Aug 2017 01:29:08 -0700
Subject: Bluetooth: Add option for disabling legacy ioctl interfaces
The legacy ioctl interfaces are only useful for BR/EDR operation and
since Linux 3.4 no longer needed anyway. This options allows disabling
them alltogether and use only management interfaces for setup and
control.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
net/bluetooth/Kconfig | 10 ++++++++++
net/bluetooth/hci_sock.c | 6 ++++++
2 files changed, 16 insertions(+)
(limited to 'net')
diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
index db82a40..c18115d 100644
--- a/net/bluetooth/Kconfig
+++ b/net/bluetooth/Kconfig
@@ -126,4 +126,14 @@ config BT_DEBUGFS
Provide extensive information about internal Bluetooth states
in debugfs.
+config BT_LEGACY_IOCTL
+ bool "Enable legacy ioctl interfaces"
+ depends on BT && BT_BREDR
+ default y
+ help
+ Enable support for legacy ioctl interfaces. This is only needed
+ for old and deprecated applications using direct ioctl calls for
+ controller management. Since Linux 3.4 all configuration and
+ setup is done via mgmt interface and this is no longer needed.
+
source "drivers/bluetooth/Kconfig"
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 65d734c..0bad296 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -878,6 +878,7 @@ static int hci_sock_release(struct socket *sock)
return 0;
}
+#ifdef CONFIG_BT_LEGACY_IOCTL
static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg)
{
bdaddr_t bdaddr;
@@ -1049,6 +1050,7 @@ done:
release_sock(sk);
return err;
}
+#endif
static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
int addr_len)
@@ -1969,7 +1971,11 @@ static const struct proto_ops hci_sock_ops = {
.getname = hci_sock_getname,
.sendmsg = hci_sock_sendmsg,
.recvmsg = hci_sock_recvmsg,
+#ifdef CONFIG_BT_LEGACY_IOCTL
.ioctl = hci_sock_ioctl,
+#else
+ .ioctl = sock_no_ioctl,
+#endif
.poll = datagram_poll,
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
--
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