1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <errno.h> 19 #include <termios.h> 20 21 /* Flush pending data on FD. */ 22 int tcflush(int fd,int queue_selector)23tcflush (int fd, int queue_selector) 24 { 25 switch (queue_selector) 26 { 27 case TCIFLUSH: 28 case TCOFLUSH: 29 case TCIOFLUSH: 30 break; 31 32 default: 33 __set_errno (EINVAL); 34 return -1; 35 } 36 37 __set_errno (ENOSYS); 38 return -1; 39 } 40 41 42 stub_warning(tcflush); 43