1 | /* `struct termios' speed frobnication functions. 4.4 BSD/generic GNU version. |
2 | Copyright (C) 1991-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <stddef.h> |
20 | #include <errno.h> |
21 | #include <termios.h> |
22 | |
23 | /* Return the output baud rate stored in *TERMIOS_P. */ |
24 | speed_t |
25 | cfgetospeed (const struct termios *termios_p) |
26 | { |
27 | return termios_p->__ospeed; |
28 | } |
29 | |
30 | /* Return the input baud rate stored in *TERMIOS_P. */ |
31 | speed_t |
32 | cfgetispeed (const struct termios *termios_p) |
33 | { |
34 | return termios_p->__ispeed; |
35 | } |
36 | |
37 | /* Set the output baud rate stored in *TERMIOS_P to SPEED. */ |
38 | int |
39 | cfsetospeed (struct termios *termios_p, speed_t speed) |
40 | { |
41 | if (termios_p == NULL) |
42 | { |
43 | __set_errno (EINVAL); |
44 | return -1; |
45 | } |
46 | |
47 | termios_p->__ospeed = speed; |
48 | return 0; |
49 | } |
50 | libc_hidden_def (cfsetospeed) |
51 | |
52 | /* Set the input baud rate stored in *TERMIOS_P to SPEED. */ |
53 | int |
54 | cfsetispeed (struct termios *termios_p, speed_t speed) |
55 | { |
56 | if (termios_p == NULL) |
57 | { |
58 | __set_errno (EINVAL); |
59 | return -1; |
60 | } |
61 | |
62 | termios_p->__ispeed = speed; |
63 | return 0; |
64 | } |
65 | libc_hidden_def (cfsetispeed) |
66 | |