Atmosphere/libraries/libstratosphere/source/fs/fsa/fs_file_accessor.hpp
2021-10-10 00:14:06 -07:00

68 lines
2.7 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere.hpp>
namespace ams::fs::impl {
struct FilePathHash;
class FileSystemAccessor;
enum class WriteState {
None,
NeedsFlush,
Failed,
};
class FileAccessor : public util::IntrusiveListBaseNode<FileAccessor>, public Newable {
NON_COPYABLE(FileAccessor);
private:
std::unique_ptr<fsa::IFile> m_impl;
FileSystemAccessor * const m_parent;
WriteState m_write_state;
Result m_write_result;
const OpenMode m_open_mode;
std::unique_ptr<FilePathHash> m_file_path_hash;
s32 m_path_hash_index;
public:
FileAccessor(std::unique_ptr<fsa::IFile>&& f, FileSystemAccessor *p, OpenMode mode);
~FileAccessor();
Result Read(size_t *out, s64 offset, void *buf, size_t size, const ReadOption &option);
Result Write(s64 offset, const void *buf, size_t size, const WriteOption &option);
Result Flush();
Result SetSize(s64 size);
Result GetSize(s64 *out);
Result OperateRange(void *dst, size_t dst_size, OperationId operation, s64 offset, s64 size, const void *src, size_t src_size);
OpenMode GetOpenMode() const { return m_open_mode; }
WriteState GetWriteState() const { return m_write_state; }
FileSystemAccessor *GetParent() const { return m_parent; }
void SetFilePathHash(std::unique_ptr<FilePathHash>&& file_path_hash, s32 index);
Result ReadWithoutCacheAccessLog(size_t *out, s64 offset, void *buf, size_t size, const ReadOption &option);
private:
Result ReadWithCacheAccessLog(size_t *out, s64 offset, void *buf, size_t size, const ReadOption &option, bool use_path_cache, bool use_data_cache);
ALWAYS_INLINE Result UpdateLastResult(Result r) {
if (!fs::ResultNotEnoughFreeSpace::Includes(r)) {
m_write_result = r;
}
return r;
}
};
}