Alex Light | 098e7a6 | 2019-05-21 16:57:10 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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 | |
| 18 | #include <string> |
| 19 | #include <iostream> |
| 20 | #include <sstream> |
| 21 | |
| 22 | #include "jvmti.h" |
| 23 | |
| 24 | #include "base/logging.h" |
| 25 | #include "base/globals.h" |
| 26 | #include "base/memfd.h" |
| 27 | |
| 28 | #ifdef __linux__ |
| 29 | #include <sys/utsname.h> |
| 30 | #endif |
| 31 | |
| 32 | namespace art { |
| 33 | namespace Test1963AddToDexClassLoaderInMemory { |
| 34 | |
| 35 | extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasWorkingMemfdCreate(JNIEnv*, jclass) { |
| 36 | // We should always have a working version if we're on normal buildbots. |
| 37 | if (!art::kIsTargetBuild) { |
| 38 | return true; |
| 39 | } |
| 40 | #ifdef __linux__ |
| 41 | struct utsname name; |
| 42 | if (uname(&name) >= 0) { |
| 43 | std::istringstream version(name.release); |
| 44 | std::string major_str; |
| 45 | std::string minor_str; |
| 46 | std::getline(version, major_str, '.'); |
| 47 | std::getline(version, minor_str, '.'); |
| 48 | int major = std::stoi(major_str); |
| 49 | int minor = std::stoi(minor_str); |
| 50 | if (major >= 4 || (major == 3 && minor >= 17)) { |
| 51 | // memfd_create syscall was added in 3.17 |
| 52 | return true; |
| 53 | } |
| 54 | } |
| 55 | #endif |
| 56 | int res = memfd_create_compat("TEST THAT MEMFD CREATE WORKS", 0); |
| 57 | if (res < 0) { |
| 58 | PLOG(ERROR) << "Unable to call memfd_create_compat successfully!"; |
| 59 | return false; |
| 60 | } else { |
| 61 | close(res); |
| 62 | return true; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | } // namespace Test1963AddToDexClassLoaderInMemory |
| 67 | } // namespace art |