48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*
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* Copyright (C) 2015 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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*/
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#ifndef TRANSPORT_H_
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#define TRANSPORT_H_
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#include <android-base/macros.h>
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// General interface to allow the fastboot protocol to be used over different
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// types of transports.
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class Transport {
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public:
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Transport() = default;
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virtual ~Transport() = default;
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// Reads |len| bytes into |data|. Returns the number of bytes actually
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// read or -1 on error.
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virtual ssize_t Read(void* data, size_t len) = 0;
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// Writes |len| bytes from |data|. Returns the number of bytes actually
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// written or -1 on error.
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virtual ssize_t Write(const void* data, size_t len) = 0;
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// Closes the underlying transport. Returns 0 on success.
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virtual int Close() = 0;
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// Blocks until the transport disconnects. Transports that don't support
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// this will return immediately. Returns 0 on success.
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virtual int WaitForDisconnect() { return 0; }
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private:
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DISALLOW_COPY_AND_ASSIGN(Transport);
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};
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#endif // TRANSPORT_H_
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