32 lines · cpp
1//===-- Linux implementation of tcdrain -----------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/termios/tcdrain.h"10 11#include "src/__support/OSUtil/syscall.h"12#include "src/__support/common.h"13#include "src/__support/libc_errno.h"14#include "src/__support/macros/config.h"15 16#include <asm/ioctls.h> // Safe to include without the risk of name pollution.17#include <sys/syscall.h> // For syscall numbers18#include <termios.h>19 20namespace LIBC_NAMESPACE_DECL {21 22LLVM_LIBC_FUNCTION(int, tcdrain, (int fd)) {23 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_ioctl, fd, TCSBRK, 1);24 if (ret < 0) {25 libc_errno = -ret;26 return -1;27 }28 return 0;29}30 31} // namespace LIBC_NAMESPACE_DECL32