gen/FreeBSD/termios.c

   1 /*-
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  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  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if defined(LIBC_SCCS) && !defined(lint)
  31 static char sccsid[] = "@(#)termios.c   8.2 (Berkeley) 2/21/94";
  32 #endif /* LIBC_SCCS and not lint */
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD: src/lib/libc/gen/termios.c,v 1.16 2009/05/07 13:49:48 ed Exp $");
  35
  36 #if __DARWIN_UNIX03
  37 #ifdef VARIANT_CANCELABLE
  38 #include <pthread.h>
  39 #endif /* VARIANT_CANCELABLE */
  40 #endif /* __DARWIN_UNIX03 */
  41
  42 #include "namespace.h"
  43 #include <sys/types.h>
  44 #include <sys/fcntl.h>
  45 #include <sys/ioctl.h>
  46 #include <sys/time.h>
  47
  48 #include <errno.h>
  49 #include <termios.h>
  50 #include <unistd.h>
  51 #include "un-namespace.h"
  52
  53 #ifndef BUILDING_VARIANT
  54 int
  55 tcgetattr(fd, t)
  56         int fd;
  57         struct termios *t;
  58 {
  59
  60         return (_ioctl(fd, TIOCGETA, t));
  61 }
  62
  63 int
  64 tcsetattr(fd, opt, t)
  65         int fd, opt;
  66         const struct termios *t;
  67 {
  68         struct termios localterm;
  69
  70         if (opt & TCSASOFT) {
  71                 localterm = *t;
  72                 localterm.c_cflag |= CIGNORE;
  73                 t = &localterm;
  74         }
  75         switch (opt & ~TCSASOFT) {
  76         case TCSANOW:
  77                 return (_ioctl(fd, TIOCSETA, t));
  78         case TCSADRAIN:
  79                 return (_ioctl(fd, TIOCSETAW, t));
  80         case TCSAFLUSH:
  81                 return (_ioctl(fd, TIOCSETAF, t));
  82         default:
  83                 errno = EINVAL;
  84                 return (-1);
  85         }
  86 }
  87
  88 int
  89 tcsetpgrp(int fd, pid_t pgrp)
  90 {
  91         int s;
  92
  93         if (isatty(fd) == 0)
  94                 return (-1);
  95
  96         s = pgrp;
  97         return (_ioctl(fd, TIOCSPGRP, &s));
  98 }
  99
 100 pid_t
 101 tcgetpgrp(fd)
 102         int fd;
 103 {
 104         int s;
 105
 106         if (isatty(fd) == 0)
 107                 return ((pid_t)-1);
 108
 109         if (_ioctl(fd, TIOCGPGRP, &s) < 0)
 110                 return ((pid_t)-1);
 111
 112         return ((pid_t)s);
 113 }
 114
 115 #if 0 // Needs API review first
 116 pid_t
 117 tcgetsid(int fd)
 118 {
 119         int s;
 120
 121         if (_ioctl(fd, TIOCGSID, &s) < 0)
 122                 return ((pid_t)-1);
 123
 124         return ((pid_t)s);
 125 }
 126
 127 int
 128 tcsetsid(int fd, pid_t pid)
 129 {
 130
 131         if (pid != getsid(0)) {
 132                 errno = EINVAL;
 133                 return (-1);
 134         }
 135
 136         return (_ioctl(fd, TIOCSCTTY, NULL));
 137 }
 138 #endif
 139
 140 speed_t
 141 cfgetospeed(t)
 142         const struct termios *t;
 143 {
 144
 145         return (t->c_ospeed);
 146 }
 147
 148 speed_t
 149 cfgetispeed(t)
 150         const struct termios *t;
 151 {
 152
 153         return (t->c_ispeed);
 154 }
 155
 156 int
 157 cfsetospeed(t, speed)
 158         struct termios *t;
 159         speed_t speed;
 160 {
 161
 162         t->c_ospeed = speed;
 163         return (0);
 164 }
 165
 166 int
 167 cfsetispeed(t, speed)
 168         struct termios *t;
 169         speed_t speed;
 170 {
 171
 172         t->c_ispeed = speed;
 173         return (0);
 174 }
 175
 176 int
 177 cfsetspeed(t, speed)
 178         struct termios *t;
 179         speed_t speed;
 180 {
 181
 182         t->c_ispeed = t->c_ospeed = speed;
 183         return (0);
 184 }
 185
 186 /*
 187  * Make a pre-existing termios structure into "raw" mode: character-at-a-time
 188  * mode with no characters interpreted, 8-bit data path.
 189  */
 190 void
 191 cfmakeraw(t)
 192         struct termios *t;
 193 {
 194
 195         t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR);
 196         t->c_iflag |= IGNBRK;
 197         t->c_oflag &= ~OPOST;
 198         t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN);
 199         t->c_cflag &= ~(CSIZE|PARENB);
 200         t->c_cflag |= CS8|CREAD;
 201         t->c_cc[VMIN] = 1;
 202         t->c_cc[VTIME] = 0;
 203 }
 204
 205 int
 206 tcsendbreak(fd, len)
 207         int fd, len;
 208 {
 209         struct timeval sleepytime;
 210
 211         sleepytime.tv_sec = 0;
 212         sleepytime.tv_usec = 400000;
 213         if (_ioctl(fd, TIOCSBRK, 0) == -1)
 214                 return (-1);
 215         (void)_select(0, 0, 0, 0, &sleepytime);
 216         if (_ioctl(fd, TIOCCBRK, 0) == -1)
 217                 return (-1);
 218         return (0);
 219 }
 220 #endif /* BUILDING_VARIANT */
 221
 222 int
 223 __tcdrain(fd)
 224         int fd;
 225 {
 226 #if __DARWIN_UNIX03
 227 #ifdef VARIANT_CANCELABLE
 228         pthread_testcancel();
 229 #endif /* VARIANT_CANCELABLE */
 230 #endif /* __DARWIN_UNIX03 */
 231         return (_ioctl(fd, TIOCDRAIN, 0));
 232 }
 233
 234 __weak_reference(__tcdrain, tcdrain);
 235 __weak_reference(__tcdrain, _tcdrain);
 236
 237 #ifndef BUILDING_VARIANT
 238 int
 239 tcflush(fd, which)
 240         int fd, which;
 241 {
 242         int com;
 243
 244         switch (which) {
 245         case TCIFLUSH:
 246                 com = FREAD;
 247                 break;
 248         case TCOFLUSH:
 249                 com = FWRITE;
 250                 break;
 251         case TCIOFLUSH:
 252                 com = FREAD | FWRITE;
 253                 break;
 254         default:
 255                 errno = EINVAL;
 256                 return (-1);
 257         }
 258         return (_ioctl(fd, TIOCFLUSH, &com));
 259 }
 260
 261 int
 262 tcflow(fd, action)
 263         int fd, action;
 264 {
 265         switch (action) {
 266         case TCOOFF:
 267                 return (_ioctl(fd, TIOCSTOP, 0));
 268         case TCOON:
 269                 return (_ioctl(fd, TIOCSTART, 0));
 270         case TCION:
 271                 return (_ioctl(fd, TIOCIXON, 0));
 272         case TCIOFF:
 273                 return (_ioctl(fd, TIOCIXOFF, 0));
 274         default:
 275                 errno = EINVAL;
 276                 return (-1);
 277         }
 278         /* NOTREACHED */
 279 }
 280 #endif /* BUILDING_VARIANT */