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/*
* 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_
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