1 /*
2  * Copyright 2013 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.security.cts;
18 
19 import junit.framework.TestCase;
20 
21 import java.io.IOException;
22 
23 public class LinuxRngTest extends TestCase {
24     static {
25         System.loadLibrary("ctssecurity_jni");
26     }
27 
testDevRandomMajorMinor()28     public void testDevRandomMajorMinor() throws Exception {
29         // Based on Linux kernel's drivers/char/random.c
30         assertEquals("/dev/random major", 1, getCharDeviceMajor("/dev/random"));
31         assertEquals("/dev/random minor", 8, getCharDeviceMinor("/dev/random"));
32     }
33 
testDevUrandomMajorMinor()34     public void testDevUrandomMajorMinor() throws Exception {
35         // Based on Linux kernel's drivers/char/random.c
36         assertEquals("/dev/urandom major", 1, getCharDeviceMajor("/dev/urandom"));
37         assertEquals("/dev/urandom minor", 9, getCharDeviceMinor("/dev/urandom"));
38     }
39 
getCharDeviceMajor(String file)40     public static native int getCharDeviceMajor(String file) throws IOException;
getCharDeviceMinor(String file)41     public static native int getCharDeviceMinor(String file) throws IOException;
42 }
43