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https://github.com/Atmosphere-NX/Atmosphere
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0c161a4c1b
* fs: implement FileHandleStorage * fs: merge FileHandleStorage into file_storage TU Co-authored-by: Michael Scire <SciresM@gmail.com>
85 lines
3.5 KiB
C++
85 lines
3.5 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stratosphere/fs/fs_common.hpp>
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#include <stratosphere/fs/fs_istorage.hpp>
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#include <stratosphere/fs/fsa/fs_ifile.hpp>
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#include <stratosphere/fs/impl/fs_newable.hpp>
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namespace ams::fs {
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class FileStorage : public IStorage, public impl::Newable {
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private:
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static constexpr s64 InvalidSize = -1;
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private:
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std::unique_ptr<fsa::IFile> unique_file;
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std::shared_ptr<fsa::IFile> shared_file;
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fsa::IFile *base_file;
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s64 size;
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public:
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FileStorage(fsa::IFile *f) : unique_file(f), size(InvalidSize) {
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this->base_file = this->unique_file.get();
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}
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FileStorage(std::unique_ptr<fsa::IFile> f) : unique_file(std::move(f)), size(InvalidSize) {
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this->base_file = this->unique_file.get();
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}
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FileStorage(std::shared_ptr<fsa::IFile> f) : shared_file(f), size(InvalidSize) {
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this->base_file = this->shared_file.get();
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}
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virtual ~FileStorage() { /* ... */ }
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protected:
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Result UpdateSize();
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public:
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virtual Result Read(s64 offset, void *buffer, size_t size) override;
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virtual Result Write(s64 offset, const void *buffer, size_t size) override;
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virtual Result Flush() override;
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virtual Result GetSize(s64 *out_size) override;
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virtual Result SetSize(s64 size) override;
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virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override;
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};
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class FileHandleStorage : public IStorage, public impl::Newable {
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private:
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static constexpr s64 InvalidSize = -1;
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private:
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FileHandle handle;
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bool close_file;
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s64 size;
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os::Mutex mutex;
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public:
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constexpr explicit FileHandleStorage(FileHandle handle, bool close_file) : handle(handle), close_file(close_file), size(InvalidSize), mutex() { /* ... */ }
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constexpr explicit FileHandleStorage(FileHandle handle) : FileHandleStorage(handle, false) { /* ... */ }
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virtual ~FileHandleStorage() override {
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if (this->close_file) {
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CloseFile(this->handle);
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}
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}
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protected:
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Result UpdateSize();
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public:
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virtual Result Read(s64 offset, void *buffer, size_t size) override;
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virtual Result Write(s64 offset, const void *buffer, size_t size) override;
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virtual Result Flush() override;
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virtual Result GetSize(s64 *out_size) override;
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virtual Result SetSize(s64 size) override;
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virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override;
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};
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}
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