f5d15f9fc4
Previously FuseAppLoopCallback needs to return values in a synchrnous manner. The CL changes it to asynchronous mannger so that apps can process FUSE message asynchrnously. Bug: 35229514 Test: FuseAppLoopTest Change-Id: I8edcfdb003a25cfd5e9c490ec871140220b21e35
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/*
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* Copyright (C) 2016 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 specic language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_LIBAPPFUSE_FUSEAPPLOOP_H_
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#define ANDROID_LIBAPPFUSE_FUSEAPPLOOP_H_
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#include <memory>
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#include <mutex>
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#include <android-base/unique_fd.h>
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#include "libappfuse/FuseBuffer.h"
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namespace android {
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namespace fuse {
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class EpollController;
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class FuseAppLoopCallback {
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public:
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virtual void OnLookup(uint64_t unique, uint64_t inode) = 0;
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virtual void OnGetAttr(uint64_t unique, uint64_t inode) = 0;
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virtual void OnFsync(uint64_t unique, uint64_t inode) = 0;
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virtual void OnWrite(uint64_t unique, uint64_t inode, uint64_t offset, uint32_t size,
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const void* data) = 0;
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virtual void OnRead(uint64_t unique, uint64_t inode, uint64_t offset, uint32_t size) = 0;
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virtual void OnOpen(uint64_t unique, uint64_t inode) = 0;
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virtual void OnRelease(uint64_t unique, uint64_t inode) = 0;
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virtual ~FuseAppLoopCallback();
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};
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class FuseAppLoop final {
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public:
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FuseAppLoop(base::unique_fd&& fd);
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void Start(FuseAppLoopCallback* callback);
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void Break();
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bool ReplySimple(uint64_t unique, int32_t result);
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bool ReplyLookup(uint64_t unique, uint64_t inode, int64_t size);
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bool ReplyGetAttr(uint64_t unique, uint64_t inode, int64_t size, int mode);
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bool ReplyOpen(uint64_t unique, uint64_t fh);
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bool ReplyWrite(uint64_t unique, uint32_t size);
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bool ReplyRead(uint64_t unique, uint32_t size, const void* data);
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private:
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base::unique_fd fd_;
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base::unique_fd break_fd_;
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// Lock for multi-threading.
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std::mutex mutex_;
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};
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bool StartFuseAppLoop(int fd, FuseAppLoopCallback* callback);
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} // namespace fuse
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} // namespace android
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#endif // ANDROID_LIBAPPFUSE_FUSEAPPLOOP_H_
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