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      1 /*
      2  * Copyright (C) 2015 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 #include <android/log.h>
     18 #include <jni.h>
     19 #include <string.h>
     20 #include <time.h>
     21 
     22 #if defined(ARCH_SUPPORTS_SECCOMP)
     23 #include <linux/filter.h>
     24 #include <linux/seccomp.h>
     25 #include <sys/syscall.h>
     26 #endif
     27 
     28 #include "seccomp_sample_program.h"
     29 #include "seccomp-tests/tests/test_harness.h"
     30 
     31 // Forward declare from seccomp_bpf_tests.c.
     32 extern "C" {
     33 struct __test_metadata* get_seccomp_test_list();
     34 }
     35 
     36 static const char TAG[] = "SeccompBpfTest-Native";
     37 
     38 jboolean android_security_cts_SeccompBpfTest_runKernelUnitTest(
     39       JNIEnv* env, jobject thiz __unused, jstring name) {
     40 #if defined(ARCH_SUPPORTS_SECCOMP)
     41     const char* nameStr = env->GetStringUTFChars(name, nullptr);
     42 
     43     for (struct __test_metadata* t = get_seccomp_test_list(); t; t = t->next) {
     44         if (strcmp(t->name, nameStr) == 0) {
     45             __android_log_print(ANDROID_LOG_INFO, TAG, "Start: %s", t->name);
     46             __run_test(t);
     47             __android_log_print(ANDROID_LOG_INFO, TAG, "%s: %s",
     48                 t->passed ? "PASS" : "FAIL", t->name);
     49             return t->passed;
     50         }
     51     }
     52 #endif  // ARCH_SUPPORTS_SECCOMP
     53 
     54     return false;
     55 }
     56 
     57 jboolean android_security_cts_SeccompBpfTest_installTestFilter(JNIEnv*, jclass) {
     58 #if !defined(ARCH_SUPPORTS_SECCOMP)
     59   return false;
     60 #else
     61   struct sock_fprog prog = GetTestSeccompFilterProgram();
     62 
     63   if (prog.len == 0)
     64     return false;
     65 
     66   int rv = syscall(__NR_seccomp, SECCOMP_SET_MODE_FILTER, SECCOMP_FILTER_FLAG_TSYNC, &prog);
     67   return rv == 0;
     68 #endif
     69 }
     70 
     71 jint android_security_cts_SeccompBpfTest_getClockBootTime(JNIEnv*, jclass) {
     72   struct timespec ts;
     73   int rv = clock_gettime(CLOCK_BOOTTIME, &ts);
     74   return rv;
     75 }
     76 
     77 static JNINativeMethod methods[] = {
     78     { "runKernelUnitTest", "(Ljava/lang/String;)Z",
     79         (void*)android_security_cts_SeccompBpfTest_runKernelUnitTest },
     80     { "installTestFilter", "()Z",
     81         (void*)android_security_cts_SeccompBpfTest_installTestFilter },
     82     { "getClockBootTime", "()I",
     83         (void*)android_security_cts_SeccompBpfTest_getClockBootTime },
     84 };
     85 
     86 int register_android_os_cts_SeccompTest(JNIEnv* env) {
     87     jclass clazz = env->FindClass("android/os/cts/SeccompTest");
     88     return env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(JNINativeMethod));
     89 }
     90