mirror of
https://github.com/shadps4-emu/shadPS4.git
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113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "common/assert.h"
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#include "common/error.h"
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#include "core/file_sys/file.h"
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#ifdef _WIN64
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#include "common/ntapi.h"
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#include <io.h>
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#include <share.h>
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#include <windows.h>
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#endif
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namespace Core::FileSys {
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#ifdef _WIN64
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int File::Open(const std::filesystem::path& path, Common::FS::FileAccessMode f_access) {
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DWORD access{};
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if (f_access == Common::FS::FileAccessMode::Read) {
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access = GENERIC_READ;
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} else if (f_access == Common::FS::FileAccessMode::Write) {
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access = GENERIC_WRITE;
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} else if (f_access == Common::FS::FileAccessMode::ReadWrite) {
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access = GENERIC_READ | GENERIC_WRITE;
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} else {
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UNREACHABLE();
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}
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handle = CreateFileW(path.native().c_str(), access, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (handle == INVALID_HANDLE_VALUE) {
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return ENOENT;
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}
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}
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s64 File::Read(void* buf, size_t nbytes) {
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DWORD bytes_read;
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if (!ReadFile(handle, buf, nbytes, &bytes_read, nullptr)) {
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UNREACHABLE_MSG("ReadFile failed: {}", Common::GetLastErrorMsg());
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}
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return bytes_read;
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}
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s64 File::Pread(void* buf, size_t nbytes, s64 offset) {
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OVERLAPPED ol{};
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ol.Offset = offset;
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ol.OffsetHigh = offset >> 32;
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DWORD bytes_read;
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if (!ReadFile(handle, buf, nbytes, &bytes_read, &ol)) {
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UNREACHABLE_MSG("ReadFile failed: {}", Common::GetLastErrorMsg());
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}
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return bytes_read;
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}
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s64 File::Write(const void* buf, size_t nbytes) {
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DWORD bytes_written;
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if (!WriteFile(handle, buf, nbytes, &bytes_written, nullptr)) {
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UNREACHABLE_MSG("WriteFile failed: {}", Common::GetLastErrorMsg());
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}
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return bytes_written;
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}
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s64 File::Pwrite(const void* buf, size_t nbytes, s64 offset) {
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OVERLAPPED ol{};
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ol.Offset = offset;
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ol.OffsetHigh = offset >> 32;
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DWORD bytes_written;
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if (!WriteFile(handle, buf, nbytes, &bytes_written, &ol)) {
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UNREACHABLE_MSG("WriteFile failed: {}", Common::GetLastErrorMsg());
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}
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return bytes_written;
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}
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void File::SetSize(s64 size) {
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Lseek(size, 0);
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if (!SetEndOfFile(handle)) {
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UNREACHABLE_MSG("SetEndOfFile failed: {}", Common::GetLastErrorMsg());
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}
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}
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void File::Flush() {
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FlushFileBuffers(handle);
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}
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s64 File::Lseek(s64 offset, int whence) {
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LARGE_INTEGER new_file_pointer;
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DWORD origin{};
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if (whence == 0) {
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origin = FILE_BEGIN;
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} else if (whence == 1) {
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origin = FILE_CURRENT;
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} else if (whence == 2) {
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origin = FILE_END;
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}
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if (!SetFilePointerEx(handle, LARGE_INTEGER{.QuadPart = offset}, &new_file_pointer, origin)) {
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UNREACHABLE_MSG("SetFilePointerEx failed: {}", Common::GetLastErrorMsg());
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}
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return new_file_pointer.QuadPart;
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}
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void File::Unlink() {
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FILE_DISPOSITION_INFORMATION disposition;
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IO_STATUS_BLOCK iosb;
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disposition.DeleteFile = TRUE;
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NtSetInformationFile(handle, &iosb, &disposition, sizeof(disposition),
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FileDispositionInformation);
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}
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#else
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#endif
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} // namespace Core::FileSys
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