Merge tag 'v3.10.55' into update

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / bluetooth / af_bluetooth.c

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 9096137c889c4857507fcb60828b8d7ad581f424..f7c36826f3f4d70129375c2935f624110e26d2d0 100644 (file)
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -30,6 +30,11 @@
 #include <net/bluetooth/bluetooth.h>
 #include <linux/proc_fs.h>
 
+#ifndef CONFIG_BT_SOCK_DEBUG
+#undef  BT_DBG
+#define BT_DBG(D...)
+#endif
+
 #define VERSION "2.16"
 
 /* Bluetooth sockets */
@@ -103,11 +108,40 @@ void bt_sock_unregister(int proto)
 }
 EXPORT_SYMBOL(bt_sock_unregister);
 
+#ifdef CONFIG_PARANOID_NETWORK
+static inline int current_has_bt_admin(void)
+{
+       return !current_euid();
+}
+
+static inline int current_has_bt(void)
+{
+       return current_has_bt_admin();
+}
+# else
+static inline int current_has_bt_admin(void)
+{
+       return 1;
+}
+
+static inline int current_has_bt(void)
+{
+       return 1;
+}
+#endif
+
 static int bt_sock_create(struct net *net, struct socket *sock, int proto,
                          int kern)
 {
        int err;
 
+       if (proto == BTPROTO_RFCOMM || proto == BTPROTO_SCO ||
+                       proto == BTPROTO_L2CAP) {
+               if (!current_has_bt())
+                       return -EPERM;
+       } else if (!current_has_bt_admin())
+               return -EPERM;
+
        if (net != &init_net)
                return -EAFNOSUPPORT;
 
@@ -221,8 +255,6 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
        if (flags & (MSG_OOB))
                return -EOPNOTSUPP;
 
-       msg->msg_namelen = 0;
-
        skb = skb_recv_datagram(sk, flags, noblock, &err);
        if (!skb) {
                if (sk->sk_shutdown & RCV_SHUTDOWN)
@@ -287,8 +319,6 @@ int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
        if (flags & MSG_OOB)
                return -EOPNOTSUPP;
 
-       msg->msg_namelen = 0;
-
        BT_DBG("sk %p size %zu", sk, size);
 
        lock_sock(sk);