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15637ed4 RG |
1 | /*- |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #if defined(LIBC_SCCS) && !defined(lint) | |
35 | static char sccsid[] = "@(#)termios.c 5.9 (Berkeley) 5/20/91"; | |
36 | #endif /* LIBC_SCCS and not lint */ | |
37 | ||
38 | #include <sys/types.h> | |
39 | #include <sys/errno.h> | |
40 | #include <sys/ioctl.h> | |
41 | #include <sys/tty.h> | |
42 | #define KERNEL /* XXX - FREAD and FWRITE was ifdef'd KERNEL*/ | |
43 | #include <sys/fcntl.h> | |
44 | #undef KERNEL | |
45 | #include <termios.h> | |
46 | #include <stdio.h> | |
47 | #include <unistd.h> | |
48 | ||
49 | int | |
50 | tcgetattr(fd, t) | |
51 | int fd; | |
52 | struct termios *t; | |
53 | { | |
54 | ||
55 | return(ioctl(fd, TIOCGETA, t)); | |
56 | } | |
57 | ||
58 | int | |
59 | tcsetattr(fd, opt, t) | |
60 | int fd, opt; | |
61 | const struct termios *t; | |
62 | { | |
63 | struct termios localterm; | |
64 | ||
65 | if (opt & TCSASOFT) { | |
66 | localterm = *t; | |
67 | localterm.c_cflag |= CIGNORE; | |
68 | t = &localterm; | |
69 | opt &= ~TCSASOFT; | |
70 | } | |
71 | if (opt == TCSANOW) | |
72 | return (ioctl(fd, TIOCSETA, t)); | |
73 | else if (opt == TCSADRAIN) | |
74 | return (ioctl(fd, TIOCSETAW, t)); | |
75 | return (ioctl(fd, TIOCSETAF, t)); | |
76 | } | |
77 | ||
78 | int | |
79 | #if __STDC__ | |
80 | tcsetpgrp(int fd, pid_t pgrp) | |
81 | #else | |
82 | tcsetpgrp(fd, pgrp) | |
83 | int fd; | |
84 | pid_t pgrp; | |
85 | #endif | |
86 | { | |
87 | int s; | |
88 | ||
89 | s = pgrp; | |
90 | return(ioctl(fd, TIOCSPGRP, &s)); | |
91 | } | |
92 | ||
93 | pid_t | |
94 | tcgetpgrp(fd) | |
95 | { | |
96 | int s; | |
97 | ||
98 | if (ioctl(fd, TIOCGPGRP, &s) < 0) | |
99 | return((pid_t)-1); | |
100 | ||
101 | return((pid_t)s); | |
102 | } | |
103 | ||
104 | speed_t | |
105 | cfgetospeed(t) | |
106 | const struct termios *t; | |
107 | { | |
108 | ||
109 | return(t->c_ospeed); | |
110 | } | |
111 | ||
112 | speed_t | |
113 | cfgetispeed(t) | |
114 | const struct termios *t; | |
115 | { | |
116 | ||
117 | return(t->c_ispeed); | |
118 | } | |
119 | ||
120 | int | |
121 | cfsetospeed(t, speed) | |
122 | struct termios *t; | |
123 | speed_t speed; | |
124 | { | |
125 | t->c_ospeed = speed; | |
126 | ||
127 | return (0); | |
128 | } | |
129 | ||
130 | int | |
131 | cfsetispeed(t, speed) | |
132 | struct termios *t; | |
133 | speed_t speed; | |
134 | { | |
135 | t->c_ispeed = speed; | |
136 | ||
137 | return (0); | |
138 | } | |
139 | ||
140 | void | |
141 | cfsetspeed(t, speed) | |
142 | struct termios *t; | |
143 | speed_t speed; | |
144 | { | |
145 | t->c_ispeed = t->c_ospeed = speed; | |
146 | } | |
147 | ||
148 | /* | |
149 | * Make a pre-existing termios structure into "raw" mode: | |
150 | * character-at-a-time mode with no characters interpreted, | |
151 | * 8-bit data path. | |
152 | */ | |
153 | void | |
154 | cfmakeraw(t) | |
155 | struct termios *t; | |
156 | { | |
157 | t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
158 | t->c_oflag &= ~OPOST; | |
159 | t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
160 | t->c_cflag &= ~(CSIZE|PARENB); | |
161 | t->c_cflag |= CS8; | |
162 | /* set MIN/TIME */ | |
163 | } | |
164 | ||
165 | tcsendbreak(fd, len) | |
166 | int fd, len; | |
167 | { | |
168 | struct timeval sleepytime; | |
169 | ||
170 | sleepytime.tv_sec = 0; | |
171 | sleepytime.tv_usec = 400000; | |
172 | if (ioctl(fd, TIOCSBRK, 0) == -1) | |
173 | return (-1); | |
174 | select(0, 0, 0, 0, &sleepytime); | |
175 | if (ioctl(fd, TIOCCBRK, 0) == -1) | |
176 | return (-1); | |
177 | ||
178 | return (0); | |
179 | } | |
180 | ||
181 | tcdrain(fd) | |
182 | int fd; | |
183 | { | |
184 | if (ioctl(fd, TIOCDRAIN, 0) == -1) | |
185 | return (-1); | |
186 | ||
187 | return (0); | |
188 | } | |
189 | ||
190 | tcflush(fd, which) | |
191 | int fd, which; | |
192 | { | |
193 | int com; | |
194 | ||
195 | switch (which) { | |
196 | case TCIFLUSH: | |
197 | com = FREAD; | |
198 | break; | |
199 | case TCOFLUSH: | |
200 | com = FWRITE; | |
201 | break; | |
202 | case TCIOFLUSH: | |
203 | com = FREAD | FWRITE; | |
204 | break; | |
205 | default: | |
206 | errno = EINVAL; | |
207 | return (-1); | |
208 | } | |
209 | if (ioctl(fd, TIOCFLUSH, &com) == -1) | |
210 | return (-1); | |
211 | ||
212 | return (0); | |
213 | } | |
214 | ||
215 | tcflow(fd, action) | |
216 | int fd, action; | |
217 | { | |
218 | switch (action) { | |
219 | case TCOOFF: | |
220 | return (ioctl(fd, TIOCSTOP, 0)); | |
221 | break; | |
222 | case TCOON: | |
223 | return (ioctl(fd, TIOCSTART, 0)); | |
224 | break; | |
225 | case TCIOFF: | |
226 | case TCION: { /* these posix functions are STUPID */ | |
227 | struct termios term; | |
228 | unsigned char c; | |
229 | ||
230 | if (tcgetattr(fd, &term) == -1) | |
231 | return (-1); | |
232 | c = term.c_cc[action == TCIOFF ? VSTOP : VSTART]; | |
233 | if (c != _POSIX_VDISABLE && write(fd, &c, 1) == -1) | |
234 | return (-1); | |
235 | break; | |
236 | } | |
237 | default: | |
238 | errno = EINVAL; | |
239 | return (-1); | |
240 | } | |
241 | ||
242 | return (0); | |
243 | } |