glibc/sysdeps/unix/sysv/linux/speed.c
Ulrich Drepper d2f5be2a12 Document new files for Linux i386/ELF port.
Fri Sep  8 16:32:12 1995  Ulrich Drepper  <drepper@gnu.ai.mit.edu>

        * sysdeps/unix/sysv/linux/Implies,
        sysdeps/unix/sysv/linux/Makefile, sysdeps/unix/sysv/linux/Subdirs,
        sysdeps/unix/sysv/linux/accept.S, sysdeps/unix/sysv/linux/adjtime.c,
        sysdeps/unix/sysv/linux/adjtimex.S, sysdeps/unix/sysv/linux/bind.S,
        sysdeps/unix/sysv/linux/connect.S, sysdeps/unix/sysv/linux/direct.h,
        sysdeps/unix/sysv/linux/dl-machine.h, sysdeps/unix/sysv/linux/errnos.h,
        sysdeps/unix/sysv/linux/fork.S, sysdeps/unix/sysv/linux/gethostid.c,
        sysdeps/unix/sysv/linux/gethostname.C,
        sysdeps/unix/sysv/linux/getpeername.S,
        sysdeps/unix/sysv/linux/getpgid.S, sysdeps/unix/sysv/linux/getpgrp.S,
	sysdeps/unix/sysv/linux/getsockname.S,
	sysdeps/unix/sysv/linux/getsockopt.S, sysdeps/unix/sysv/linux/gtty.S,
	sysdeps/unix/sysv/linux/listen.S, sysdeps/unix/sysv/linux/local_lim.h,
	sysdeps/unix/sysv/linux/madvise.c, sysdeps/unix/sysv/linux/msgctl.c,
	sysdeps/unix/sysv/linux/msgget.c, sysdeps/unix/sysv/linux/msgrcv.c,
	sysdeps/unix/sysv/linux/msgsnd.c, sysdeps/unix/sysv/linux/pipe.S,
	sysdeps/unix/sysv/linux/poll.c, sysdeps/unix/sysv/linux/readv.c,
	sysdeps/unix/sysv/linux/recv.S, sysdeps/unix/sysv/linux/recvfrom.S,
	sysdeps/unix/sysv/linux/recvmsg.S, sysdeps/unix/sysv/linux/semctl.c,
	sysdeps/unix/sysv/linux/semget.c, sysdeps/unix/sysv/linux/semop.c,
	sysdeps/unix/sysv/linux/send.S, sysdeps/unix/sysv/linux/sendmsg.S,
	sysdeps/unix/sysv/linux/sendto.S, sysdeps/unix/sysv/linux/setegid.c,
	sysdeps/unix/sysv/linux/seteuid.c, sysdeps/unix/sysv/linux/sethostid.c,
	sysdeps/unix/sysv/linux/setpgid.c, sysdeps/unix/sysv/linux/setpgrp.c,
	sysdeps/unix/sysv/linux/setsid.S, sysdeps/unix/sysv/linux/setsockopt.S,
	sysdeps/unix/sysv/linux/settimeofday.S,
	sysdeps/unix/sysv/linux/shmat.c, sysdeps/unix/sysv/linux/shmctl.c,
	sysdeps/unix/sysv/linux/shmdt.c, sysdeps/unix/sysv/linux/shmget.c,
	sysdeps/unix/sysv/linux/shutdown.S,
	sysdeps/unix/sysv/linux/sigaction.S, sysdeps/unix/sysv/linux/signal.S,
	sysdeps/unix/sysv/linux/sigpending.S, sysdeps/unix/sysv/linux/sigset.h,
	sysdeps/unix/sysv/linux/sockaddrcom.h,
	sysdeps/unix/sysv/linux/socketpair.S, sysdeps/unix/sysv/linux/speed.c,
	sysdeps/unix/sysv/linux/statbuf.h, sysdeps/unix/sysv/linux/stty.S,
	sysdeps/unix/sysv/linux/syscall.h, sysdeps/unix/sysv/linux/sysconf.c,
	sysdeps/unix/sysv/linux/tcdrain.c, sysdeps/unix/sysv/linux/tcflow.c,
	sysdeps/unix/sysv/linux/tcflush.c, sysdeps/unix/sysv/linux/tcgetattr.c,
	sysdeps/unix/sysv/linux/tcsetattr.c,
	sysdeps/unix/sysv/linux/termbits.h, sysdeps/unix/sysv/linux/ualarm.c,
	sysdeps/unix/sysv/linux/ulimit.c, sysdeps/unix/sysv/linux/usleep.c,
	sysdeps/unix/sysv/linux/utsnamelen.h, sysdeps/unix/sysv/linux/vfork.c,
	sysdeps/unix/sysv/linux/wait.c, sysdeps/unix/sysv/linux/wait4.S,
	sysdeps/unix/sysv/linux/waitpid.c, sysdeps/unix/sysv/linux/writev.c:
	New Linux/ELF specific, architecture independent files.

	sysdeps/unix/sysv/linux/i386/Dist,
	sysdeps/unix/sysv/linux/i386/Makefile,
	sysdeps/unix/sysv/linux/i386/brk.S,
	sysdeps/unix/sysv/linux/i386/fcntlbits.h,
	sysdeps/unix/sysv/linux/i386/fpu_control.c,
	sysdeps/unix/sysv/linux/i386/fpu_control.h,
	sysdeps/unix/sysv/linux/i386/fstat.S,
	sysdeps/unix/sysv/linux/i386/fxstat.S,
	sysdeps/unix/sysv/linux/i386/ieee_fpu.c,
	sysdeps/unix/sysv/linux/i386/init-first.S,
	sysdeps/unix/sysv/linux/i386/ipc.S,
	sysdeps/unix/sysv/linux/i386/lstat.S,
	sysdeps/unix/sysv/linux/i386/lxstat.S,
	sysdeps/unix/sysv/linux/i386/mknod.S,
	sysdeps/unix/sysv/linux/i386/mmap.S,
	sysdeps/unix/sysv/linux/i386/sbrk.S,
	sysdeps/unix/sysv/linux/i386/setfpucw.c,
	sysdeps/unix/sysv/linux/i386/signum.h,
	sysdeps/unix/sysv/linux/i386/socket.S,
	sysdeps/unix/sysv/linux/i386/stat.S,
	sysdeps/unix/sysv/linux/i386/syscall.S,
	sysdeps/unix/sysv/linux/i386/sysdep.S,
	sysdeps/unix/sysv/linux/i386/sysdep.h,
	sysdeps/unix/sysv/linux/i386/xmknod.S,
	sysdeps/unix/sysv/linux/i386/xstat.S:
	New Linux i386/ELF specific files.

	sysdeps/unix/sysv/linux/sys/ipc_buf.h,
	sysdeps/unix/sysv/linux/sys/mman.h,
	sysdeps/unix/sysv/linux/sys/msq_buf.h,
	sysdeps/unix/sysv/linux/sys/sem_buf.h,
	sysdeps/unix/sysv/linux/sys/shm_buf.h,
	sysdeps/unix/sysv/linux/sys/socketcall.h,
	sysdeps/unix/sysv/linux/sys/timex.h:
	New Linux/ELF specific, architecture independent header files.
1995-09-08 17:02:25 +00:00

104 lines
2.5 KiB
C

/* `struct termios' speed frobnication functions. Linux version.
Copyright (C) 1991, 1992, 1993, 1995 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <stddef.h>
#include <errno.h>
#include <termios.h>
static const speed_t speeds[] =
{
0,
50,
75,
110,
134,
150,
200,
300,
600,
1200,
1800,
2400,
4800,
9600,
19200,
38400,
38400, /* Mention this twice here is a trick. */
57600,
115200,
230400,
};
/* Return the output baud rate stored in *TERMIOS_P. */
speed_t
cfgetospeed (termios_p)
const struct termios *termios_p;
{
speed_t retval = termios_p->c_cflag & (CBAUD | CBAUDEX);
if (retval & CBAUDEX)
{
retval &= ~CBAUDEX;
retval |= CBAUD + 1;
}
return retval;
}
/* Return the input baud rate stored in *TERMIOS_P.
For Linux there is no difference between input and output speed. */
strong_alias (cfgetospeed, cfgetispeed);
/* Set the output baud rate stored in *TERMIOS_P to SPEED. */
int
cfsetospeed (termios_p, speed)
struct termios *termios_p;
speed_t speed;
{
register unsigned int i;
if (termios_p == NULL)
{
errno = EINVAL;
return -1;
}
/* This allows either B1200 or 1200 to work. XXX
Do we really want to try to support this, given that
fetching the speed must return one or the other? */
for (i = 0; i < sizeof (speeds) / sizeof (speeds[0]); ++i)
if (i == speed || speeds[i] == speed)
{
termios_p->c_cflag &= ~(CBAUD | CBAUDEX);
termios_p->c_cflag |= (i & CBAUD);
if (i & ~CBAUD)
termios_p->c_cflag |= CBAUDEX;
return 0;
}
errno = EINVAL;
return -1;
}
/* Set the input baud rate stored in *TERMIOS_P to SPEED.
For Linux there is no difference between input and output speed. */
strong_alias (cfsetospeed, cfsetispeed);