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/*
* Copyright (C) 2019 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.
*/
#define LOG_TAG "ReaddirHelper"
#include "libfuse_jni/ReaddirHelper.h"
#include <android-base/logging.h>
#include <sys/types.h>
namespace mediaprovider {
namespace fuse {
namespace {
inline bool is_dot_or_dotdot(const char* name) {
return name && name[0] == '.' && (name[1] == '\0' || (name[1] == '.' && name[2] == '\0'));
}
} // namespace
bool isDirectory(const dirent& entry) {
if (entry.d_type == DT_DIR) return true;
return false;
}
void addDirectoryEntriesFromLowerFs(DIR* dirp, bool (*const filter)(const dirent&),
std::vector<std::shared_ptr<DirectoryEntry>>* directory_entries) {
while (1) {
errno = 0;
const struct dirent* entry = readdir(dirp);
if (entry == nullptr) {
if (errno) {
PLOG(ERROR) << "DEBUG: readdir(): readdir failed with %d" << errno;
directory_entries->resize(0);
directory_entries->push_back(std::make_shared<DirectoryEntry>("", errno));
}
break;
}
// Ignore '.' & '..' to maintain consistency with directory entries
// returned by MediaProvider.
if (is_dot_or_dotdot(entry->d_name)) continue;
if (filter == nullptr || filter(*entry)) {
directory_entries->push_back(
std::make_shared<DirectoryEntry>(entry->d_name, entry->d_type));
}
}
}
} // namespace fuse
} // namespace mediaprovider
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