68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <string>
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#include <iostream>
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#include <sstream>
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#include "jvmti.h"
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#include "base/logging.h"
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#include "base/globals.h"
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#include "base/memfd.h"
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#ifdef __linux__
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#include <sys/utsname.h>
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#endif
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namespace art {
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namespace Test1963AddToDexClassLoaderInMemory {
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasWorkingMemfdCreate(JNIEnv*, jclass) {
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// We should always have a working version if we're on normal buildbots.
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if (!art::kIsTargetBuild) {
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return true;
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}
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#ifdef __linux__
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struct utsname name;
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if (uname(&name) >= 0) {
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std::istringstream version(name.release);
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std::string major_str;
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std::string minor_str;
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std::getline(version, major_str, '.');
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std::getline(version, minor_str, '.');
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int major = std::stoi(major_str);
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int minor = std::stoi(minor_str);
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if (major >= 4 || (major == 3 && minor >= 17)) {
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// memfd_create syscall was added in 3.17
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return true;
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}
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}
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#endif
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int res = memfd_create_compat("TEST THAT MEMFD CREATE WORKS", 0);
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if (res < 0) {
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PLOG(ERROR) << "Unable to call memfd_create_compat successfully!";
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return false;
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} else {
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close(res);
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return true;
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}
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}
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} // namespace Test1963AddToDexClassLoaderInMemory
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} // namespace art
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