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1 | /* Copyright (C) 1991-2024 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 | |
23 | tcflush (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); |