Allow Bluetooth to bind to NetworkStack

Test: flashed, verified bluetooth tethering gets IP address
Bug: b/112869080
Change-Id: Idfbfdf54754fea46eb0099b9b9a3bdc29dd241e0

1 files changed, 15 insertions, 2 deletions

diff --git a/src/com/android/server/util/PermissionUtil.java b/src/com/android/server/util/PermissionUtil.java
index 733f873..82bf038 100644
--- a/src/com/android/server/util/PermissionUtil.java
+++ b/src/com/android/server/util/PermissionUtil.java
@@ -31,8 +31,21 @@ public final class PermissionUtil {
      */
     public static void checkNetworkStackCallingPermission() {
         // TODO: check that the calling PID is the system server.
-        if (getCallingUid() != Process.SYSTEM_UID && getCallingUid() != Process.ROOT_UID) {
-            throw new SecurityException("Invalid caller: " + getCallingUid());
+        final int caller = getCallingUid();
+        if (caller != Process.SYSTEM_UID && caller != Process.BLUETOOTH_UID) {
+            throw new SecurityException("Invalid caller: " + caller);
+        }
+    }
+
+    /**
+     * Check that the caller is allowed to dump the network stack, e.g. dumpsys.
+     * @throws SecurityException The caller is not allowed to dump the network stack.
+     */
+    public static void checkDumpPermission() {
+        final int caller = getCallingUid();
+        if (caller != Process.SYSTEM_UID && caller != Process.ROOT_UID
+                && caller != Process.SHELL_UID) {
+            throw new SecurityException("No dump permissions for caller: " + caller);
         }
     }