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authorJohan Hedberg <johan.hedberg@intel.com>2013-10-16 17:13:26 +0300
committerMarcel Holtmann <marcel@holtmann.org>2013-10-16 07:35:40 -0700
commitbfe4655f05d7ec4a7c0c1c7e4051862f824cd8ec (patch)
tree6ff2c46c6794f29df2425462224005fb52c87583 /net/bluetooth/l2cap_sock.c
parenteb438b5f3065dc270484919e8b88486d0cff59d3 (diff)
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Bluetooth: Reintroduce socket restrictions for LE sockets
Right now we do not allow user space to use connection oriented channels on LE, and the only CID that can be used is the Attribute Protocol one. These restrictions went away together with the recent refactoring of the L2CAP code, but this patch puts them back to their appropriate places. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/l2cap_sock.c')
-rw-r--r--net/bluetooth/l2cap_sock.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 68f486a586ff..95498d553b00 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -72,6 +72,15 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
if (!bdaddr_type_is_valid(la.l2_bdaddr_type))
return -EINVAL;
+ if (bdaddr_type_is_le(la.l2_bdaddr_type)) {
+ /* Connection oriented channels are not supported on LE */
+ if (la.l2_psm)
+ return -EINVAL;
+ /* We only allow ATT user space socket */
+ if (la.l2_cid != L2CAP_CID_ATT)
+ return -EINVAL;
+ }
+
lock_sock(sk);
if (sk->sk_state != BT_OPEN) {
@@ -156,6 +165,15 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR)
return -EINVAL;
+ if (bdaddr_type_is_le(la.l2_bdaddr_type)) {
+ /* Connection oriented channels are not supported on LE */
+ if (la.l2_psm)
+ return -EINVAL;
+ /* We only allow ATT user space socket */
+ if (la.l2_cid != L2CAP_CID_ATT)
+ return -EINVAL;
+ }
+
err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid),
&la.l2_bdaddr, la.l2_bdaddr_type);
if (err)