sysdeps/stub/tcsetattr.c

   1 /* Copyright (C) 1991, 1995 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 Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 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 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <stddef.h>
  22 #include <termios.h>
  23
  24 static int EXFUN(bad_speed, (speed_t speed));
  25
  26 /* Set the state of FD to *TERMIOS_P.  */
  27 int
  28 DEFUN(tcsetattr, (fd, optional_actions, termios_p),
  29       int fd AND int optional_actions AND CONST struct termios *termios_p)
  30 {
  31   if (fd < 0)
  32     {
  33       errno = EBADF;
  34       return -1;
  35     }
  36   if (termios_p == NULL)
  37     {
  38       errno = EINVAL;
  39       return -1;
  40     }
  41   switch (optional_actions)
  42     {
  43     case TCSANOW:
  44     case TCSADRAIN:
  45     case TCSAFLUSH:
  46       break;
  47     default:
  48       errno = EINVAL;
  49       return -1;
  50     }
  51
  52   if (bad_speed(termios_p->__ospeed) ||
  53       bad_speed(termios_p->__ispeed == 0 ?
  54                 termios_p->__ospeed : termios_p->__ispeed))
  55     {
  56       errno = EINVAL;
  57       return -1;
  58     }
  59
  60   errno = ENOSYS;
  61   return -1;
  62 }
  63
  64
  65 /* Stricknine checking.  */
  66 static int
  67 DEFUN(bad_speed, (speed), speed_t speed)
  68 {
  69   switch (speed)
  70     {
  71     case B0:
  72     case B50:
  73     case B75:
  74     case B110:
  75     case B134:
  76     case B150:
  77     case B200:
  78     case B300:
  79     case B600:
  80     case B1200:
  81     case B1800:
  82     case B2400:
  83     case B4800:
  84     case B9600:
  85     case B19200:
  86     case B38400:
  87       return 0;
  88     default:
  89       return 1;
  90     }
  91 }
  92
  93
  94 stub_warning (tcsetattr)