mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-14 17:16:36 +00:00
57 lines
2.2 KiB
C++
57 lines
2.2 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.hpp>
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namespace ams::fssystem {
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class HierarchicalSha256Storage : public ::ams::fs::IStorage, public ::ams::fs::impl::Newable {
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NON_COPYABLE(HierarchicalSha256Storage);
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NON_MOVEABLE(HierarchicalSha256Storage);
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public:
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static constexpr s32 LayerCount = 3;
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static constexpr size_t HashSize = crypto::Sha256Generator::HashSize;
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private:
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os::Mutex mutex;
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IStorage *base_storage;
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s64 base_storage_size;
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char *hash_buffer;
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size_t hash_buffer_size;
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s32 hash_target_block_size;
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s32 log_size_ratio;
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public:
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HierarchicalSha256Storage() : mutex(false) { /* ... */ }
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Result Initialize(IStorage **base_storages, s32 layer_count, size_t htbs, void *hash_buf, size_t hash_buf_size);
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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 OperateRange(void *dst, size_t dst_size, fs::OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override;
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virtual Result GetSize(s64 *out) override {
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return this->base_storage->GetSize(out);
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}
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virtual Result Flush() override {
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return ResultSuccess();
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}
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virtual Result SetSize(s64 size) override {
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return fs::ResultUnsupportedOperationInHierarchicalSha256StorageA();
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}
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};
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}
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