gen/termios-fbsd.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
  40 extern void _pthread_testcancel(pthread_t thread, int isconforming);
  41 #endif /* VARIANT_CANCELABLE */
  42 #endif /* __DARWIN_UNIX03 */
  43
  44 #include "namespace.h"
  45 #include <sys/types.h>
  46 #include <sys/fcntl.h>
  47 #include <sys/ioctl.h>
  48 #include <sys/time.h>
  49
  50 #include <errno.h>
  51 #include <termios.h>
  52 #include <unistd.h>
  53 #include "un-namespace.h"
  54
  55 #ifndef BUILDING_VARIANT
  56 int
  57 tcgetattr(fd, t)
  58         int fd;
  59         struct termios *t;
  60 {
  61
  62         return (_ioctl(fd, TIOCGETA, t));
  63 }
  64
  65 int
  66 tcsetattr(fd, opt, t)
  67         int fd, opt;
  68         const struct termios *t;
  69 {
  70         struct termios localterm;
  71
  72         if (opt & TCSASOFT) {
  73                 localterm = *t;
  74                 localterm.c_cflag |= CIGNORE;
  75                 t = &localterm;
  76         }
  77         switch (opt & ~TCSASOFT) {
  78         case TCSANOW:
  79                 return (_ioctl(fd, TIOCSETA, t));
  80         case TCSADRAIN:
  81                 return (_ioctl(fd, TIOCSETAW, t));
  82         case TCSAFLUSH:
  83                 return (_ioctl(fd, TIOCSETAF, t));
  84         default:
  85                 errno = EINVAL;
  86                 return (-1);
  87         }
  88 }
  89
  90 int
  91 tcsetpgrp(int fd, pid_t pgrp)
  92 {
  93         int s;
  94
  95         if (isatty(fd) == 0)
  96                 return (-1);
  97
  98         s = pgrp;
  99         return (_ioctl(fd, TIOCSPGRP, &s));
 100 }
 101
 102 pid_t
 103 tcgetpgrp(fd)
 104         int fd;
 105 {
 106         int s;
 107
 108         if (isatty(fd) == 0)
 109                 return ((pid_t)-1);
 110
 111         if (_ioctl(fd, TIOCGPGRP, &s) < 0)
 112                 return ((pid_t)-1);
 113
 114         return ((pid_t)s);
 115 }
 116
 117 #if 0 // Needs API review first
 118 pid_t
 119 tcgetsid(int fd)
 120 {
 121         int s;
 122
 123         if (_ioctl(fd, TIOCGSID, &s) < 0)
 124                 return ((pid_t)-1);
 125
 126         return ((pid_t)s);
 127 }
 128
 129 int
 130 tcsetsid(int fd, pid_t pid)
 131 {
 132
 133         if (pid != getsid(0)) {
 134                 errno = EINVAL;
 135                 return (-1);
 136         }
 137
 138         return (_ioctl(fd, TIOCSCTTY, NULL));
 139 }
 140 #endif
 141
 142 speed_t
 143 cfgetospeed(t)
 144         const struct termios *t;
 145 {
 146
 147         return (t->c_ospeed);
 148 }
 149
 150 speed_t
 151 cfgetispeed(t)
 152         const struct termios *t;
 153 {
 154
 155         return (t->c_ispeed);
 156 }
 157
 158 int
 159 cfsetospeed(t, speed)
 160         struct termios *t;
 161         speed_t speed;
 162 {
 163
 164         t->c_ospeed = speed;
 165         return (0);
 166 }
 167
 168 int
 169 cfsetispeed(t, speed)
 170         struct termios *t;
 171         speed_t speed;
 172 {
 173
 174         t->c_ispeed = speed;
 175         return (0);
 176 }
 177
 178 int
 179 cfsetspeed(t, speed)
 180         struct termios *t;
 181         speed_t speed;
 182 {
 183
 184         t->c_ispeed = t->c_ospeed = speed;
 185         return (0);
 186 }
 187
 188 /*
 189  * Make a pre-existing termios structure into "raw" mode: character-at-a-time
 190  * mode with no characters interpreted, 8-bit data path.
 191  */
 192 void
 193 cfmakeraw(t)
 194         struct termios *t;
 195 {
 196
 197         t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR);
 198         t->c_iflag |= IGNBRK;
 199         t->c_oflag &= ~OPOST;
 200         t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN);
 201         t->c_cflag &= ~(CSIZE|PARENB);
 202         t->c_cflag |= CS8|CREAD;
 203         t->c_cc[VMIN] = 1;
 204         t->c_cc[VTIME] = 0;
 205 }
 206
 207 int
 208 tcsendbreak(fd, len)
 209         int fd, len;
 210 {
 211         struct timeval sleepytime;
 212
 213         sleepytime.tv_sec = 0;
 214         sleepytime.tv_usec = 400000;
 215         if (_ioctl(fd, TIOCSBRK, 0) == -1)
 216                 return (-1);
 217         (void)_select(0, 0, 0, 0, &sleepytime);
 218         if (_ioctl(fd, TIOCCBRK, 0) == -1)
 219                 return (-1);
 220         return (0);
 221 }
 222 #endif /* BUILDING_VARIANT */
 223
 224 int
 225 __tcdrain(fd)
 226         int fd;
 227 {
 228 #if __DARWIN_UNIX03
 229 #ifdef VARIANT_CANCELABLE
 230         _pthread_testcancel(pthread_self(), 1);
 231 #endif /* VARIANT_CANCELABLE */
 232 #endif /* __DARWIN_UNIX03 */
 233         return (_ioctl(fd, TIOCDRAIN, 0));
 234 }
 235
 236 __weak_reference(__tcdrain, tcdrain);
 237 __weak_reference(__tcdrain, _tcdrain);
 238
 239 #ifndef BUILDING_VARIANT
 240 int
 241 tcflush(fd, which)
 242         int fd, which;
 243 {
 244         int com;
 245
 246         switch (which) {
 247         case TCIFLUSH:
 248                 com = FREAD;
 249                 break;
 250         case TCOFLUSH:
 251                 com = FWRITE;
 252                 break;
 253         case TCIOFLUSH:
 254                 com = FREAD | FWRITE;
 255                 break;
 256         default:
 257                 errno = EINVAL;
 258                 return (-1);
 259         }
 260         return (_ioctl(fd, TIOCFLUSH, &com));
 261 }
 262
 263 int
 264 tcflow(fd, action)
 265         int fd, action;
 266 {
 267         struct termios term;
 268         u_char c;
 269
 270         switch (action) {
 271         case TCOOFF:
 272                 return (_ioctl(fd, TIOCSTOP, 0));
 273         case TCOON:
 274                 return (_ioctl(fd, TIOCSTART, 0));
 275         case TCION:
 276                 return (_ioctl(fd, TIOCIXON, 0));
 277         case TCIOFF:
 278                 return (_ioctl(fd, TIOCIXOFF, 0));
 279         default:
 280                 errno = EINVAL;
 281                 return (-1);
 282         }
 283         /* NOTREACHED */
 284 }
 285 #endif /* BUILDING_VARIANT */