1 /* 2 * Copyright 2016 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 #include <unistd.h> 17 18 #define LOG_TAG "VtsSyscall" 19 #include <utils/Log.h> 20 21 #include <cerrno> 22 #include <cstdlib> 23 #include <iostream> 24 main(int argc,char ** argv)25int main(int argc, char **argv) { 26 if (argc != 2) { 27 ALOGE("syscall_exists: invalid argument"); 28 return -EINVAL; 29 } 30 int syscall_id = atoi(argv[1]); 31 ALOGI("testing syscall [%d]", syscall_id); 32 int ret = syscall(syscall_id); 33 bool exists = !(ret == -1 && errno == ENOSYS); 34 ALOGI("syscall [%d] is %s", syscall_id, exists ? "enabled" : "disabled"); 35 std::cout << (exists ? 'y' : 'n'); 36 return 0; 37 } 38