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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 #include <unistd.h>
     22 
     23 #if defined(ARCH_SUPPORTS_SECCOMP)
     24 #include <libminijail.h>
     25 #include <seccomp_bpf_tests.h>
     26 #endif
     27 
     28 jboolean android_security_cts_SeccompBpfTest_runKernelUnitTest(
     29       JNIEnv* env, jobject thiz __unused, jstring name) {
     30 #if defined(ARCH_SUPPORTS_SECCOMP)
     31     const char* nameStr = env->GetStringUTFChars(name, nullptr);
     32     return run_seccomp_test(nameStr);
     33 #endif  // ARCH_SUPPORTS_SECCOMP
     34 
     35     return false;
     36 }
     37 
     38 jboolean android_security_cts_SeccompBpfTest_nativeInstallTestFilter(
     39         JNIEnv*, jclass, jint policyFd) {
     40 #if !defined(ARCH_SUPPORTS_SECCOMP)
     41     return false;
     42 #else
     43     minijail* j = minijail_new();
     44     minijail_no_new_privs(j);
     45     minijail_use_seccomp_filter(j);
     46     minijail_set_seccomp_filter_tsync(j);
     47     minijail_parse_seccomp_filters_from_fd(j, policyFd);
     48     minijail_enter(j);
     49     minijail_destroy(j);
     50 
     51     close(policyFd);
     52     return true;
     53 #endif
     54 }
     55 
     56 jstring android_security_cts_SeccompBpfTest_getPolicyAbiString(JNIEnv* env, jclass) {
     57     const char* string;
     58 #if defined(__arm__)
     59     string = "arm";
     60 #elif defined(__aarch64__)
     61     string = "arm64";
     62 #elif defined(__i386__)
     63     string = "i386";
     64 #elif defined(__x86_64__)
     65     string = "x86-64";
     66 #else
     67     return nullptr;
     68 #endif
     69     return env->NewStringUTF(string);
     70 }
     71 
     72 jint android_security_cts_SeccompBpfTest_getClockBootTime(JNIEnv*, jclass) {
     73     struct timespec ts;
     74     int rv = clock_gettime(CLOCK_BOOTTIME_ALARM, &ts);
     75     return rv;
     76 }
     77 
     78 static JNINativeMethod methods[] = {
     79     { "runKernelUnitTest", "(Ljava/lang/String;)Z",
     80         (void*)android_security_cts_SeccompBpfTest_runKernelUnitTest },
     81     { "nativeInstallTestFilter", "(I)Z",
     82         (void*)android_security_cts_SeccompBpfTest_nativeInstallTestFilter },
     83     { "getPolicyAbiString", "()Ljava/lang/String;",
     84         (void*)android_security_cts_SeccompBpfTest_getPolicyAbiString },
     85     { "getClockBootTime", "()I",
     86         (void*)android_security_cts_SeccompBpfTest_getClockBootTime },
     87 };
     88 
     89 int register_android_os_cts_SeccompTest(JNIEnv* env) {
     90     jclass clazz = env->FindClass("android/os/cts/SeccompTest");
     91     return env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(JNINativeMethod));
     92 }
     93