| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef FRAMEWORKS_BASE_CORE_JNI_MISC_UTILS_H_ |
| #define FRAMEWORKS_BASE_CORE_JNI_MISC_UTILS_H_ |
| |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| #include <fcntl.h> |
| #include <linux/fs.h> |
| |
| namespace { |
| static constexpr const char* kExternalStorageSdcardfs = "external_storage.sdcardfs.enabled"; |
| |
| static bool IsFilesystemSupported(const std::string& fsType) { |
| std::string supported; |
| if (!android::base::ReadFileToString("/proc/filesystems", &supported)) { |
| ALOGE("Failed to read supported filesystems"); |
| return false; |
| } |
| return supported.find(fsType + "\n") != std::string::npos; |
| } |
| |
| static inline bool IsSdcardfsUsed() { |
| return IsFilesystemSupported("sdcardfs") && |
| android::base::GetBoolProperty(kExternalStorageSdcardfs, true); |
| } |
| } // namespace |
| #endif // FRAMEWORKS_BASE_CORE_JNI_MISC_UTILS_H_ |