1  /* `struct termios' speed frobnication functions.  4.4 BSD/generic GNU version.
       2     Copyright (C) 1991-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <stddef.h>
      20  #include <errno.h>
      21  #include <termios.h>
      22  
      23  /* Return the output baud rate stored in *TERMIOS_P.  */
      24  speed_t
      25  cfgetospeed (const struct termios *termios_p)
      26  {
      27    return termios_p->__ospeed;
      28  }
      29  
      30  /* Return the input baud rate stored in *TERMIOS_P.  */
      31  speed_t
      32  cfgetispeed (const struct termios *termios_p)
      33  {
      34    return termios_p->__ispeed;
      35  }
      36  
      37  /* Set the output baud rate stored in *TERMIOS_P to SPEED.  */
      38  int
      39  cfsetospeed (struct termios *termios_p, speed_t speed)
      40  {
      41    if (termios_p == NULL)
      42      {
      43        __set_errno (EINVAL);
      44        return -1;
      45      }
      46  
      47    termios_p->__ospeed = speed;
      48    return 0;
      49  }
      50  libc_hidden_def (cfsetospeed)
      51  
      52  /* Set the input baud rate stored in *TERMIOS_P to SPEED.  */
      53  int
      54  cfsetispeed (struct termios *termios_p, speed_t speed)
      55  {
      56    if (termios_p == NULL)
      57      {
      58        __set_errno (EINVAL);
      59        return -1;
      60      }
      61  
      62    termios_p->__ispeed = speed;
      63    return 0;
      64  }
      65  libc_hidden_def (cfsetispeed)