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//===-- Definition of kernel's version of struct termios --------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_TERMIOS_LINUX_KERNEL_TERMIOS_H
#define LLVM_LIBC_SRC_TERMIOS_LINUX_KERNEL_TERMIOS_H
#include "src/__support/macros/config.h"
#include <stddef.h>
#include <termios.h>
namespace LIBC_NAMESPACE_DECL {
// The kernel's struct termios is different from the libc's struct termios. The
// kernel's syscalls expect the size and layout of its definition of struct
// termios. So, we define a flavor of struct termios which matches that of the
// kernel so that we can translate between the libc version and the kernel
// version when passing struct termios objects to syscalls.
// NOTE: The definitions here are generic definitions valid for most target
// architectures including x86_64 and aarch64. Definitions on some architectures
// deviate from these generic definitions. Adjustments have to be made for those
// architectures.
constexpr size_t KERNEL_NCCS = 19;
struct kernel_termios {
tcflag_t c_iflag;
tcflag_t c_oflag;
tcflag_t c_cflag;
tcflag_t c_lflag;
cc_t c_line;
cc_t c_cc[KERNEL_NCCS];
};
} // namespace LIBC_NAMESPACE_DECL
#endif // LLVM_LIBC_SRC_TERMIOS_LINUX_KERNEL_TERMIOS_H
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