NetBSD-5.0.2/sys/compat/linux/common/linux_termios.c
/* $NetBSD: linux_termios.c,v 1.36 2008/07/04 10:13:52 matthias Exp $ */
/*-
* Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Eric Haszlakiewicz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_termios.c,v 1.36 2008/07/04 10:13:52 matthias Exp $");
#if defined(_KERNEL_OPT)
#include "opt_ptm.h"
#endif
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/termios.h>
#include <sys/kernel.h>
#include <sys/syscallargs.h>
#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_ioctl.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_util.h>
#include <compat/linux/common/linux_termios.h>
#include <compat/linux/common/linux_ipc.h>
#include <compat/linux/common/linux_sem.h>
#include <compat/linux/linux_syscallargs.h>
#ifdef DEBUG_LINUX
#define DPRINTF(a) uprintf a
#else
#define DPRINTF(a)
#endif
int
linux_ioctl_termios(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval)
{
/* {
syscallarg(int) fd;
syscallarg(u_long) com;
syscallarg(void *) data;
} */
file_t *fp;
u_long com;
struct linux_termio tmplt;
struct linux_termios tmplts;
struct termios tmpbts;
int idat;
struct sys_ioctl_args ia;
int error;
char tioclinux;
int (*bsdioctl)(file_t *, u_long, void *);
if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
return (EBADF);
if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
error = EBADF;
goto out;
}
bsdioctl = fp->f_ops->fo_ioctl;
com = SCARG(uap, com);
retval[0] = 0;
switch (com) {
case LINUX_TCGETS:
error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
if (error)
goto out;
bsd_termios_to_linux_termios(&tmpbts, &tmplts);
error = copyout(&tmplts, SCARG(uap, data), sizeof tmplts);
goto out;
case LINUX_TCSETS:
case LINUX_TCSETSW:
case LINUX_TCSETSF:
/*
* First fill in all fields, so that we keep the current
* values for fields that Linux doesn't know about.
*/
error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
if (error)
goto out;
error = copyin(SCARG(uap, data), &tmplts, sizeof tmplts);
if (error)
goto out;
linux_termios_to_bsd_termios(&tmplts, &tmpbts);
switch (com) {
case LINUX_TCSETS:
com = TIOCSETA;
break;
case LINUX_TCSETSW:
com = TIOCSETAW;
break;
case LINUX_TCSETSF:
com = TIOCSETAF;
break;
}
error = (*bsdioctl)(fp, com, &tmpbts);
goto out;
case LINUX_TCGETA:
error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
if (error)
goto out;
bsd_termios_to_linux_termio(&tmpbts, &tmplt);
error = copyout(&tmplt, SCARG(uap, data), sizeof tmplt);
goto out;
case LINUX_TCSETA:
case LINUX_TCSETAW:
case LINUX_TCSETAF:
/*
* First fill in all fields, so that we keep the current
* values for fields that Linux doesn't know about.
*/
error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
if (error)
goto out;
error = copyin(SCARG(uap, data), &tmplt, sizeof tmplt);
if (error)
goto out;
linux_termio_to_bsd_termios(&tmplt, &tmpbts);
switch (com) {
case LINUX_TCSETA:
com = TIOCSETA;
break;
case LINUX_TCSETAW:
com = TIOCSETAW;
break;
case LINUX_TCSETAF:
com = TIOCSETAF;
break;
}
error = (*bsdioctl)(fp, com, &tmpbts);
goto out;
case LINUX_TCFLSH:
switch((u_long)SCARG(uap, data)) {
case 0:
idat = FREAD;
break;
case 1:
idat = FWRITE;
break;
case 2:
idat = 0;
break;
default:
error = EINVAL;
goto out;
}
error = (*bsdioctl)(fp, TIOCFLUSH, &idat);
goto out;
case LINUX_TIOCGETD:
error = (*bsdioctl)(fp, TIOCGETD, &idat);
if (error)
goto out;
switch (idat) {
case TTYDISC:
idat = LINUX_N_TTY;
break;
case SLIPDISC:
idat = LINUX_N_SLIP;
break;
case PPPDISC:
idat = LINUX_N_PPP;
break;
case STRIPDISC:
idat = LINUX_N_STRIP;
break;
/*
* Linux does not have the tablet line discipline.
*/
case TABLDISC:
default:
idat = -1; /* XXX What should this be? */
break;
}
error = copyout(&idat, SCARG(uap, data), sizeof idat);
goto out;
case LINUX_TIOCSETD:
error = copyin(SCARG(uap, data), &idat, sizeof idat);
if (error)
goto out;
switch (idat) {
case LINUX_N_TTY:
idat = TTYDISC;
break;
case LINUX_N_SLIP:
idat = SLIPDISC;
break;
case LINUX_N_PPP:
idat = PPPDISC;
break;
case LINUX_N_STRIP:
idat = STRIPDISC;
break;
/*
* We can't handle the mouse line discipline Linux has.
*/
case LINUX_N_MOUSE:
case LINUX_N_AX25:
case LINUX_N_X25:
case LINUX_N_6PACK:
default:
error = EINVAL;
goto out;
}
error = (*bsdioctl)(fp, TIOCSETD, &idat);
goto out;
case LINUX_TIOCLINUX:
error = copyin(SCARG(uap, data), &tioclinux, sizeof tioclinux);
if (error != 0)
goto out;
switch (tioclinux) {
case LINUX_TIOCLINUX_KERNMSG:
/*
* XXX needed to not fail for some things. Could
* try to use TIOCCONS, but the char argument
* specifies the VT #, not an fd.
*/
error = 0;
goto out;
case LINUX_TIOCLINUX_COPY:
case LINUX_TIOCLINUX_PASTE:
case LINUX_TIOCLINUX_UNBLANK:
case LINUX_TIOCLINUX_LOADLUT:
case LINUX_TIOCLINUX_READSHIFT:
case LINUX_TIOCLINUX_READMOUSE:
case LINUX_TIOCLINUX_VESABLANK:
case LINUX_TIOCLINUX_CURCONS: /* could use VT_GETACTIVE */
error = EINVAL;
goto out;
}
break;
case LINUX_TIOCGWINSZ:
SCARG(&ia, com) = TIOCGWINSZ;
break;
case LINUX_TIOCSWINSZ:
SCARG(&ia, com) = TIOCSWINSZ;
break;
case LINUX_TIOCGPGRP:
SCARG(&ia, com) = TIOCGPGRP;
break;
case LINUX_TIOCSPGRP:
SCARG(&ia, com) = TIOCSPGRP;
break;
case LINUX_FIONREAD:
SCARG(&ia, com) = FIONREAD;
break;
case LINUX_FIONBIO:
SCARG(&ia, com) = FIONBIO;
break;
case LINUX_FIOASYNC:
SCARG(&ia, com) = FIOASYNC;
break;
case LINUX_TIOCEXCL:
SCARG(&ia, com) = TIOCEXCL;
break;
case LINUX_TIOCNXCL:
SCARG(&ia, com) = TIOCNXCL;
break;
case LINUX_TIOCCONS:
SCARG(&ia, com) = TIOCCONS;
break;
case LINUX_TIOCNOTTY:
SCARG(&ia, com) = TIOCNOTTY;
break;
case LINUX_TCSBRK:
idat = (u_long)SCARG(uap, data);
if (idat != 0)
SCARG(&ia, com) = TIOCDRAIN;
else {
if ((error = (*bsdioctl)(fp, TIOCSBRK, NULL)) != 0)
goto out;
error = tsleep(&idat, PZERO | PCATCH, "linux_tcsbrk", hz / 4);
if (error == EINTR || error == ERESTART) {
(void)(*bsdioctl)(fp, TIOCCBRK, NULL);
error = EINTR;
} else
error = (*bsdioctl)(fp, TIOCCBRK, NULL);
goto out;
}
break;
case LINUX_TIOCMGET:
SCARG(&ia, com) = TIOCMGET;
break;
case LINUX_TIOCMSET:
SCARG(&ia, com) = TIOCMSET;
break;
case LINUX_TIOCMBIC:
SCARG(&ia, com) = TIOCMBIC;
break;
case LINUX_TIOCMBIS:
SCARG(&ia, com) = TIOCMBIS;
break;
#ifdef LINUX_TIOCGPTN
case LINUX_TIOCGPTN:
#ifndef NO_DEV_PTM
{
struct ptmget ptm;
error = (*bsdioctl)(fp, TIOCPTSNAME, &ptm);
if (error != 0)
goto out;
error = copyout(&ptm.sfd, SCARG(uap, data),
sizeof(ptm.sfd));
goto out;
}
#endif /* NO_DEV_PTM */
#endif /* LINUX_TIOCGPTN */
#ifdef LINUX_TIOCSPTLCK
case LINUX_TIOCSPTLCK:
fd_putfile(SCARG(uap, fd));
error = copyin(SCARG(uap, data), &idat, sizeof(idat));
if (error)
return error;
DPRINTF(("TIOCSPTLCK %d\n", idat));
return 0;
#endif
default:
error = EINVAL;
goto out;
}
SCARG(&ia, fd) = SCARG(uap, fd);
SCARG(&ia, data) = SCARG(uap, data);
error = sys_ioctl(curlwp, &ia, retval);
out:
fd_putfile(SCARG(uap, fd));
return error;
}