1 /* Copyright (C) 1992-2023 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 <termios.h>
19 #include <errno.h>
20 #include <stddef.h>
21
22 struct speed_struct
23 {
24 speed_t value;
25 speed_t internal;
26 };
27
28 static const struct speed_struct speeds[] =
29 {
30 #ifdef B0
31 { 0, B0 },
32 #endif
33 #ifdef B50
34 { 50, B50 },
35 #endif
36 #ifdef B75
37 { 75, B75 },
38 #endif
39 #ifdef B110
40 { 110, B110 },
41 #endif
42 #ifdef B134
43 { 134, B134 },
44 #endif
45 #ifdef B150
46 { 150, B150 },
47 #endif
48 #ifdef B200
49 { 200, B200 },
50 #endif
51 #ifdef B300
52 { 300, B300 },
53 #endif
54 #ifdef B600
55 { 600, B600 },
56 #endif
57 #ifdef B1200
58 { 1200, B1200 },
59 #endif
60 #ifdef B1200
61 { 1200, B1200 },
62 #endif
63 #ifdef B1800
64 { 1800, B1800 },
65 #endif
66 #ifdef B2400
67 { 2400, B2400 },
68 #endif
69 #ifdef B4800
70 { 4800, B4800 },
71 #endif
72 #ifdef B9600
73 { 9600, B9600 },
74 #endif
75 #ifdef B19200
76 { 19200, B19200 },
77 #endif
78 #ifdef B38400
79 { 38400, B38400 },
80 #endif
81 #ifdef B57600
82 { 57600, B57600 },
83 #endif
84 #ifdef B76800
85 { 76800, B76800 },
86 #endif
87 #ifdef B115200
88 { 115200, B115200 },
89 #endif
90 #ifdef B153600
91 { 153600, B153600 },
92 #endif
93 #ifdef B230400
94 { 230400, B230400 },
95 #endif
96 #ifdef B307200
97 { 307200, B307200 },
98 #endif
99 #ifdef B460800
100 { 460800, B460800 },
101 #endif
102 #ifdef B500000
103 { 500000, B500000 },
104 #endif
105 #ifdef B576000
106 { 576000, B576000 },
107 #endif
108 #ifdef B921600
109 { 921600, B921600 },
110 #endif
111 #ifdef B1000000
112 { 1000000, B1000000 },
113 #endif
114 #ifdef B1152000
115 { 1152000, B1152000 },
116 #endif
117 #ifdef B1500000
118 { 1500000, B1500000 },
119 #endif
120 #ifdef B2000000
121 { 2000000, B2000000 },
122 #endif
123 #ifdef B2500000
124 { 2500000, B2500000 },
125 #endif
126 #ifdef B3000000
127 { 3000000, B3000000 },
128 #endif
129 #ifdef B3500000
130 { 3500000, B3500000 },
131 #endif
132 #ifdef B4000000
133 { 4000000, B4000000 },
134 #endif
135 };
136
137
138 /* Set both the input and output baud rates stored in *TERMIOS_P to SPEED. */
139 int
140 cfsetspeed (struct termios *termios_p, speed_t speed)
141 {
142 size_t cnt;
143
144 for (cnt = 0; cnt < sizeof (speeds) / sizeof (speeds[0]); ++cnt)
145 if (speed == speeds[cnt].internal)
146 {
147 cfsetispeed (termios_p, speed);
148 cfsetospeed (termios_p, speed);
149 return 0;
150 }
151 else if (speed == speeds[cnt].value)
152 {
153 cfsetispeed (termios_p, speeds[cnt].internal);
154 cfsetospeed (termios_p, speeds[cnt].internal);
155 return 0;
156 }
157
158 __set_errno (EINVAL);
159
160 return -1;
161 }