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55 lines
1.8 KiB
55 lines
1.8 KiB
// 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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#define LOG_TAG "FuseUtils"
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#include "include/libfuse_jni/FuseUtils.h"
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#include <string>
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#include <vector>
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#include "android-base/strings.h"
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using std::string;
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namespace mediaprovider {
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namespace fuse {
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bool containsMount(const string& path, const string& userid) {
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// This method is called from lookup, so it's called rather frequently.
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// Hence, we avoid concatenating the strings and we use 3 separate suffixes.
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static const string prefix = "/storage/emulated/";
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if (!android::base::StartsWithIgnoreCase(path, prefix)) {
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return false;
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}
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const string& rest_of_path = path.substr(prefix.length());
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if (!android::base::StartsWithIgnoreCase(rest_of_path, userid)) {
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return false;
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}
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static const string android_suffix = "/Android";
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static const string data_suffix = "/Android/data";
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static const string obb_suffix = "/Android/obb";
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const string& path_suffix = rest_of_path.substr(userid.length());
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return android::base::EqualsIgnoreCase(path_suffix, android_suffix) ||
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android::base::EqualsIgnoreCase(path_suffix, data_suffix) ||
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android::base::EqualsIgnoreCase(path_suffix, obb_suffix);
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}
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} // namespace fuse
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} // namespace mediaprovider
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