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/* cfsetspeed(), Linux version.
Copyright (C) 1991-2025 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
<https://www.gnu.org/licenses/>. */
#include <termios_internals.h>
/* Set both the input and output baud rates stored in *TERMIOS_P to SPEED. */
int
__cfsetspeed (struct termios *termios_p, speed_t speed)
{
tcflag_t cbaud = ___speed_to_cbaud (speed);
termios_p->c_ospeed = speed;
termios_p->c_ispeed = speed;
termios_p->c_cflag &= ~(CBAUD | CIBAUD);
termios_p->c_cflag |= cbaud | (cbaud << IBSHIFT);
return 0;
}
libc_hidden_def (__cfsetspeed)
versioned_symbol (libc, __cfsetspeed, cfsetspeed, GLIBC_2_42);
#if _TERMIOS_OLD_COMPAT
int
attribute_compat_text_section
__old_cfsetspeed (old_termios_t *termios_p, speed_t speed)
{
speed_t real_speed = ___cbaud_to_speed (speed, -1);
if (real_speed == (speed_t)-1)
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
#if !_HAVE_STRUCT_OLD_TERMIOS
/* Otherwise these fields don't exist in old_termios_t */
termios_p->c_ospeed = real_speed;
termios_p->c_ispeed = real_speed;
#endif
termios_p->c_cflag &= ~(CBAUD | CIBAUD);
termios_p->c_cflag |= speed | (speed << IBSHIFT);
return 0;
}
compat_symbol (libc, __old_cfsetspeed, cfsetspeed, GLIBC_2_0);
#endif /* _TERMIOS_OLD_COMPAT */
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