mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*
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* Copyright (c) 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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#include <exosphere.hpp>
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#include "fusee_fs_storage.hpp"
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namespace ams::fs {
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Result FileHandleStorage::UpdateSize() {
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R_SUCCEED_IF(m_size != InvalidSize);
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R_RETURN(GetFileSize(std::addressof(m_size), m_handle));
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}
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Result FileHandleStorage::Read(s64 offset, void *buffer, size_t size) {
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/* Immediately succeed if there's nothing to read. */
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R_SUCCEED_IF(size == 0);
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/* Validate buffer. */
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R_UNLESS(buffer != nullptr, fs::ResultNullptrArgument());
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/* Ensure our size is valid. */
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R_TRY(this->UpdateSize());
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/* Ensure our access is valid. */
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R_TRY(IStorage::CheckAccessRange(offset, size, m_size));
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R_RETURN(ReadFile(m_handle, offset, buffer, size, fs::ReadOption()));
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}
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Result FileHandleStorage::Write(s64 offset, const void *buffer, size_t size) {
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/* Immediately succeed if there's nothing to write. */
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R_SUCCEED_IF(size == 0);
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/* Validate buffer. */
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R_UNLESS(buffer != nullptr, fs::ResultNullptrArgument());
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/* Ensure our size is valid. */
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R_TRY(this->UpdateSize());
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/* Ensure our access is valid. */
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R_TRY(IStorage::CheckAccessRange(offset, size, m_size));
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R_RETURN(WriteFile(m_handle, offset, buffer, size, fs::WriteOption()));
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}
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Result FileHandleStorage::Flush() {
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R_RETURN(FlushFile(m_handle));
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}
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Result FileHandleStorage::GetSize(s64 *out_size) {
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R_TRY(this->UpdateSize());
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*out_size = m_size;
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R_SUCCEED();
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}
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Result FileHandleStorage::SetSize(s64 size) {
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m_size = InvalidSize;
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R_RETURN(SetFileSize(m_handle, size));
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}
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}
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