[thirdparty/glibc.git] / termios / tcsetattr.c

/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <stddef.h>
#include <termios.h>

static int bad_speed (speed_t speed);

/* Set the state of FD to *TERMIOS_P.  */
int
tcsetattr (int fd, int optional_actions, const struct termios *termios_p)
{
  if (fd < 0)
    {
      __set_errno (EBADF);
      return -1;
    }
  if (termios_p == NULL)
    {
      __set_errno (EINVAL);
      return -1;
    }
  switch (optional_actions)
    {
    case TCSANOW:
    case TCSADRAIN:
    case TCSAFLUSH:
      break;
    default:
      __set_errno (EINVAL);
      return -1;
    }

  if (bad_speed(termios_p->__ospeed) ||
      bad_speed(termios_p->__ispeed == 0 ?
		termios_p->__ospeed : termios_p->__ispeed))
    {
      __set_errno (EINVAL);
      return -1;
    }

  __set_errno (ENOSYS);
  return -1;
}
libc_hidden_def (tcsetattr)

/* Strychnine checking.  */
static int
bad_speed (speed_t speed)
{
  switch (speed)
    {
    case B0:
    case B50:
    case B75:
    case B110:
    case B134:
    case B150:
    case B200:
    case B300:
    case B600:
    case B1200:
    case B1800:
    case B2400:
    case B4800:
    case B9600:
    case B19200:
    case B38400:
    case B57600:
    case B115200:
    case B230400:
    case B460800:
    case B500000:
    case B576000:
    case B921600:
    case B1000000:
    case B1152000:
    case B1500000:
    case B2000000:
    case B2500000:
    case B3000000:
    case B3500000:
    case B4000000:
      return 0;
    default:
      return 1;
    }
}


stub_warning (tcsetattr)
Commit	Line	Data
688903eb	1	/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
6d52618b	2	This file is part of the GNU C Library.
28f540f4	3
6d52618b	4	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	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.
28f540f4	8
6d52618b UD	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
41bdb6e2	12	Lesser General Public License for more details.
28f540f4	13
41bdb6e2	14	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	15	License along with the GNU C Library; if not, see
59ba27a6 PE	16	<http://www.gnu.org/licenses/>. */
28f540f4	17
28f540f4 RM	18	#include <errno.h>
	19	#include <stddef.h>
	20	#include <termios.h>
	21
bcaad6ee	22	static int bad_speed (speed_t speed);
28f540f4 RM	23
	24	/* Set the state of FD to TERMIOS_P. /
	25	int
bcaad6ee	26	tcsetattr (int fd, int optional_actions, const struct termios *termios_p)
28f540f4 RM	27	{
	28	if (fd < 0)
	29	{
c4029823	30	__set_errno (EBADF);
28f540f4 RM	31	return -1;
	32	}
	33	if (termios_p == NULL)
	34	{
c4029823	35	__set_errno (EINVAL);
28f540f4 RM	36	return -1;
	37	}
	38	switch (optional_actions)
	39	{
	40	case TCSANOW:
	41	case TCSADRAIN:
	42	case TCSAFLUSH:
	43	break;
	44	default:
c4029823	45	__set_errno (EINVAL);
28f540f4 RM	46	return -1;
	47	}
	48
	49	if (bad_speed(termios_p->__ospeed) \|\|
	50	bad_speed(termios_p->__ispeed == 0 ?
	51	termios_p->__ospeed : termios_p->__ispeed))
	52	{
c4029823	53	__set_errno (EINVAL);
28f540f4 RM	54	return -1;
	55	}
	56
c4029823	57	__set_errno (ENOSYS);
28f540f4 RM	58	return -1;
28f540f4 RM	59	}
df962917	60	libc_hidden_def (tcsetattr)
28f540f4	61
6d52618b	62	/* Strychnine checking. */
28f540f4	63	static int
bcaad6ee	64	bad_speed (speed_t speed)
28f540f4 RM	65	{
	66	switch (speed)
	67	{
	68	case B0:
	69	case B50:
	70	case B75:
	71	case B110:
	72	case B134:
	73	case B150:
	74	case B200:
	75	case B300:
	76	case B600:
	77	case B1200:
	78	case B1800:
	79	case B2400:
	80	case B4800:
	81	case B9600:
	82	case B19200:
	83	case B38400:
15c64502 RM	84	case B57600:
	85	case B115200:
	86	case B230400:
	87	case B460800:
	88	case B500000:
	89	case B576000:
	90	case B921600:
	91	case B1000000:
	92	case B1152000:
	93	case B1500000:
	94	case B2000000:
	95	case B2500000:
	96	case B3000000:
	97	case B3500000:
	98	case B4000000:
28f540f4 RM	99	return 0;
	100	default:
	101	return 1;
	102	}
	103	}
	104
	105
3f33a4ce	106	stub_warning (tcsetattr)