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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 <libminijail.h>
     24 #include <seccomp_bpf_tests.h>
     25 #endif
     26 
     27 static const char TAG[] = "SeccompBpfTest-Native";
     28 
     29 jboolean android_security_cts_SeccompBpfTest_runKernelUnitTest(
     30       JNIEnv* env, jobject thiz __unused, jstring name) {
     31 #if defined(ARCH_SUPPORTS_SECCOMP)
     32     const char* nameStr = env->GetStringUTFChars(name, nullptr);
     33 
     34     for (struct __test_metadata* t = get_seccomp_test_list(); t; t = t->next) {
     35         if (strcmp(t->name, nameStr) == 0) {
     36             __android_log_print(ANDROID_LOG_INFO, TAG, "Start: %s", t->name);
     37             __run_test(t);
     38             __android_log_print(ANDROID_LOG_INFO, TAG, "%s: %s",
     39                 t->passed ? "PASS" : "FAIL", t->name);
     40             return t->passed;
     41         }
     42     }
     43 #endif  // ARCH_SUPPORTS_SECCOMP
     44 
     45     return false;
     46 }
     47 
     48 jboolean android_security_cts_SeccompBpfTest_nativeInstallTestFilter(
     49         JNIEnv*, jclass, jint policyFd) {
     50 #if !defined(ARCH_SUPPORTS_SECCOMP)
     51     return false;
     52 #else
     53     minijail* j = minijail_new();
     54     minijail_no_new_privs(j);
     55     minijail_use_seccomp_filter(j);
     56     minijail_set_seccomp_filter_tsync(j);
     57     minijail_parse_seccomp_filters_from_fd(j, policyFd);
     58     minijail_enter(j);
     59     minijail_destroy(j);
     60 
     61     close(policyFd);
     62     return true;
     63 #endif
     64 }
     65 
     66 jstring android_security_cts_SeccompBpfTest_getPolicyAbiString(JNIEnv* env, jclass) {
     67     const char* string;
     68 #if defined(__arm__)
     69     string = "arm";
     70 #elif defined(__aarch64__)
     71     string = "arm64";
     72 #elif defined(__i386__)
     73     string = "i386";
     74 #elif defined(__x86_64__)
     75     string = "x86-64";
     76 #else
     77     return nullptr;
     78 #endif
     79     return env->NewStringUTF(string);
     80 }
     81 
     82 jint android_security_cts_SeccompBpfTest_getClockBootTime(JNIEnv*, jclass) {
     83     struct timespec ts;
     84     int rv = clock_gettime(CLOCK_BOOTTIME_ALARM, &ts);
     85     return rv;
     86 }
     87 
     88 static JNINativeMethod methods[] = {
     89     { "runKernelUnitTest", "(Ljava/lang/String;)Z",
     90         (void*)android_security_cts_SeccompBpfTest_runKernelUnitTest },
     91     { "nativeInstallTestFilter", "(I)Z",
     92         (void*)android_security_cts_SeccompBpfTest_nativeInstallTestFilter },
     93     { "getPolicyAbiString", "()Ljava/lang/String;",
     94         (void*)android_security_cts_SeccompBpfTest_getPolicyAbiString },
     95     { "getClockBootTime", "()I",
     96         (void*)android_security_cts_SeccompBpfTest_getClockBootTime },
     97 };
     98 
     99 int register_android_os_cts_SeccompTest(JNIEnv* env) {
    100     jclass clazz = env->FindClass("android/os/cts/SeccompTest");
    101     return env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(JNINativeMethod));
    102 }
    103