// Copyright 2024 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//     http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#pragma once

#include "sys_interface.hpp"

#include <mtd/mtd-user.h>

#include <sys/ioctl.h>

#include <unistd.h>

#include <cstdint>

#include <system_error>

namespace google

{

namespace hoth

{

namespace internal

{

/** @class SysImpl

 *  @brief syscall concrete implementation

 *  @details Passes through all calls to the normal linux syscalls

 */

class SysImpl : public Sys

{

  public:

    int open(const char* pathname, int flags) const override;

    int close(int fd) const override;

    off_t lseek(int fd, off_t offset, int whence) const override;

    ssize_t read(int fd, void* buf, size_t count) const override;

    ssize_t write(int fd, const void* buf, size_t count) const override;

    int ioctl(int fd, uint64_t request, void* mtd) const override;

};

inline std::system_error errnoException(const std::string& message)

{

    return std::system_error(errno, std::generic_category(), message);

}

/** @brief Default instantiation of sys */

extern SysImpl sys_impl;

} // namespace internal

} // namespace hoth

} // namespace google