From: Marcel Holtmann <marcel@holtmann.org>
Date: Sun, 15 Mar 2015 02:28:01 +0000 (-0700)
Subject: Bluetooth: Add support for untrusted access to management commands
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c91041dc4efff71f29f1dd4c9a4a5e80b841395c;p=linux-beck.git

Bluetooth: Add support for untrusted access to management commands

Some management commands are safe to be accessed from any user without
special permissions. First step for allowing access to any of these
commands from untrusted application is to mark them accordingly.

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

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 859005c9a8fc..3546789c1616 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1291,7 +1291,8 @@ void hci_sock_dev_event(struct hci_dev *hdev, int event);
 
 #define HCI_MGMT_VAR_LEN	(1 << 0)
 #define HCI_MGMT_NO_HDEV	(1 << 1)
-#define HCI_MGMT_UNCONFIGURED	(1 << 2)
+#define HCI_MGMT_UNTRUSTED	(1 << 2)
+#define HCI_MGMT_UNCONFIGURED	(1 << 3)
 
 struct hci_mgmt_handler {
 	int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 1e5afa76e371..09f31f9642b7 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -6251,12 +6251,16 @@ unlock:
 static const struct hci_mgmt_handler mgmt_handlers[] = {
 	{ NULL }, /* 0x0000 (no command) */
 	{ read_version,            MGMT_READ_VERSION_SIZE,
-						HCI_MGMT_NO_HDEV },
+						HCI_MGMT_NO_HDEV |
+						HCI_MGMT_UNTRUSTED },
 	{ read_commands,           MGMT_READ_COMMANDS_SIZE,
-						HCI_MGMT_NO_HDEV },
+						HCI_MGMT_NO_HDEV |
+						HCI_MGMT_UNTRUSTED },
 	{ read_index_list,         MGMT_READ_INDEX_LIST_SIZE,
-						HCI_MGMT_NO_HDEV },
-	{ read_controller_info,    MGMT_READ_INFO_SIZE,                 0 },
+						HCI_MGMT_NO_HDEV |
+						HCI_MGMT_UNTRUSTED },
+	{ read_controller_info,    MGMT_READ_INFO_SIZE,
+						HCI_MGMT_UNTRUSTED },
 	{ set_powered,             MGMT_SETTING_SIZE,                   0 },
 	{ set_discoverable,        MGMT_SET_DISCOVERABLE_SIZE,          0 },
 	{ set_connectable,         MGMT_SETTING_SIZE,                   0 },
@@ -6312,9 +6316,11 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
 	{ load_conn_param,         MGMT_LOAD_CONN_PARAM_SIZE,
 						HCI_MGMT_VAR_LEN },
 	{ read_unconf_index_list,  MGMT_READ_UNCONF_INDEX_LIST_SIZE,
-						HCI_MGMT_NO_HDEV },
+						HCI_MGMT_NO_HDEV |
+						HCI_MGMT_UNTRUSTED },
 	{ read_config_info,        MGMT_READ_CONFIG_INFO_SIZE,
-						HCI_MGMT_UNCONFIGURED },
+						HCI_MGMT_UNCONFIGURED |
+						HCI_MGMT_UNTRUSTED },
 	{ set_external_config,     MGMT_SET_EXTERNAL_CONFIG_SIZE,
 						HCI_MGMT_UNCONFIGURED },
 	{ set_public_address,      MGMT_SET_PUBLIC_ADDRESS_SIZE,
@@ -6323,7 +6329,8 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
 						HCI_MGMT_VAR_LEN },
 	{ NULL },
 	{ read_ext_index_list,     MGMT_READ_EXT_INDEX_LIST_SIZE,
-						HCI_MGMT_NO_HDEV },
+						HCI_MGMT_NO_HDEV |
+						HCI_MGMT_UNTRUSTED },
 };
 
 int mgmt_control(struct hci_mgmt_chan *chan, struct sock *sk,