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40 lines
1.0 KiB
40 lines
1.0 KiB
// Copyright 2015 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _BSDIFF_FILE_H_
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#define _BSDIFF_FILE_H_
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#include <memory>
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#include "bsdiff/file_interface.h"
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namespace bsdiff {
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class File : public FileInterface {
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public:
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// Opens a file |pathname| with flags |flags| as defined by open(2). In case
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// of error, an empty unique_ptr is returned and errno is set accordingly.
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static std::unique_ptr<File> FOpen(const char* pathname, int flags);
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~File() override;
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// FileInterface overrides.
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bool Read(void* buf, size_t count, size_t* bytes_read) override;
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bool Write(const void* buf, size_t count, size_t* bytes_written) override;
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bool Seek(off_t pos) override;
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bool Close() override;
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bool GetSize(uint64_t* size) override;
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private:
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// Creates the File instance for the |fd|. Takes ownership of the file
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// descriptor.
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explicit File(int fd);
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int fd_;
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};
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} // namespace bsdiff
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#endif // _BSDIFF_FILE_H_
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