1 //===-- Linux implementation of tcflow -----------------------------------===// 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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/termios/tcflow.h" 10 11 #include "src/__support/OSUtil/syscall.h" 12 #include "src/__support/common.h" 13 #include "src/errno/libc_errno.h" 14 15 #include <asm/ioctls.h> // Safe to include without the risk of name pollution. 16 #include <sys/syscall.h> // For syscall numbers 17 #include <termios.h> 18 19 namespace LIBC_NAMESPACE { 20 21 LLVM_LIBC_FUNCTION(int, tcflow, (int fd, int action)) { 22 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_ioctl, fd, TCXONC, action); 23 if (ret < 0) { 24 libc_errno = -ret; 25 return -1; 26 } 27 return 0; 28 } 29 30 } // namespace LIBC_NAMESPACE 31