379 lines
9.0 KiB
C
379 lines
9.0 KiB
C
/* $NetBSD: linux_termios.c,v 1.37 2013/12/27 16:58:50 njoly Exp $ */
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/*-
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* Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Frank van der Linden and Eric Haszlakiewicz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: linux_termios.c,v 1.37 2013/12/27 16:58:50 njoly Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_ptm.h"
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#endif
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/termios.h>
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#include <sys/kernel.h>
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#include <sys/syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_ioctl.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_util.h>
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#include <compat/linux/common/linux_termios.h>
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#include <compat/linux/common/linux_ipc.h>
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#include <compat/linux/common/linux_sem.h>
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#include <compat/linux/linux_syscallargs.h>
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#ifdef DEBUG_LINUX
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#define DPRINTF(a) uprintf a
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#else
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#define DPRINTF(a)
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#endif
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int
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linux_ioctl_termios(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(u_long) com;
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syscallarg(void *) data;
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} */
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file_t *fp;
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u_long com;
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struct linux_termio tmplt;
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struct linux_termios tmplts;
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struct termios tmpbts;
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int idat;
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struct sys_ioctl_args ia;
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int error;
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char tioclinux;
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int (*bsdioctl)(file_t *, u_long, void *);
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if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
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return (EBADF);
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if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
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error = EBADF;
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goto out;
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}
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bsdioctl = fp->f_ops->fo_ioctl;
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com = SCARG(uap, com);
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retval[0] = 0;
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switch (com) {
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case LINUX_TCGETS:
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error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
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if (error)
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goto out;
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bsd_termios_to_linux_termios(&tmpbts, &tmplts);
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error = copyout(&tmplts, SCARG(uap, data), sizeof tmplts);
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goto out;
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case LINUX_TCSETS:
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case LINUX_TCSETSW:
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case LINUX_TCSETSF:
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/*
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* First fill in all fields, so that we keep the current
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* values for fields that Linux doesn't know about.
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*/
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error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
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if (error)
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goto out;
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error = copyin(SCARG(uap, data), &tmplts, sizeof tmplts);
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if (error)
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goto out;
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linux_termios_to_bsd_termios(&tmplts, &tmpbts);
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switch (com) {
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case LINUX_TCSETS:
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com = TIOCSETA;
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break;
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case LINUX_TCSETSW:
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com = TIOCSETAW;
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break;
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case LINUX_TCSETSF:
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com = TIOCSETAF;
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break;
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}
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error = (*bsdioctl)(fp, com, &tmpbts);
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goto out;
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case LINUX_TCGETA:
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error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
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if (error)
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goto out;
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bsd_termios_to_linux_termio(&tmpbts, &tmplt);
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error = copyout(&tmplt, SCARG(uap, data), sizeof tmplt);
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goto out;
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case LINUX_TCSETA:
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case LINUX_TCSETAW:
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case LINUX_TCSETAF:
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/*
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* First fill in all fields, so that we keep the current
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* values for fields that Linux doesn't know about.
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*/
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error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
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if (error)
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goto out;
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error = copyin(SCARG(uap, data), &tmplt, sizeof tmplt);
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if (error)
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goto out;
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linux_termio_to_bsd_termios(&tmplt, &tmpbts);
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switch (com) {
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case LINUX_TCSETA:
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com = TIOCSETA;
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break;
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case LINUX_TCSETAW:
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com = TIOCSETAW;
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break;
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case LINUX_TCSETAF:
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com = TIOCSETAF;
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break;
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}
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error = (*bsdioctl)(fp, com, &tmpbts);
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goto out;
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case LINUX_TCFLSH:
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switch((u_long)SCARG(uap, data)) {
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case 0:
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idat = FREAD;
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break;
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case 1:
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idat = FWRITE;
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break;
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case 2:
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idat = 0;
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break;
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default:
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error = EINVAL;
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goto out;
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}
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error = (*bsdioctl)(fp, TIOCFLUSH, &idat);
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goto out;
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case LINUX_TIOCGETD:
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error = (*bsdioctl)(fp, TIOCGETD, &idat);
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if (error)
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goto out;
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switch (idat) {
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case TTYDISC:
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idat = LINUX_N_TTY;
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break;
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case SLIPDISC:
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idat = LINUX_N_SLIP;
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break;
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case PPPDISC:
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idat = LINUX_N_PPP;
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break;
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case STRIPDISC:
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idat = LINUX_N_STRIP;
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break;
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/*
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* Linux does not have the tablet line discipline.
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*/
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case TABLDISC:
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default:
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idat = -1; /* XXX What should this be? */
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break;
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}
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error = copyout(&idat, SCARG(uap, data), sizeof idat);
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goto out;
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case LINUX_TIOCSETD:
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error = copyin(SCARG(uap, data), &idat, sizeof idat);
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if (error)
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goto out;
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switch (idat) {
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case LINUX_N_TTY:
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idat = TTYDISC;
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break;
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case LINUX_N_SLIP:
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idat = SLIPDISC;
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break;
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case LINUX_N_PPP:
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idat = PPPDISC;
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break;
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case LINUX_N_STRIP:
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idat = STRIPDISC;
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break;
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/*
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* We can't handle the mouse line discipline Linux has.
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*/
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case LINUX_N_MOUSE:
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case LINUX_N_AX25:
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case LINUX_N_X25:
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case LINUX_N_6PACK:
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default:
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error = EINVAL;
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goto out;
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}
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error = (*bsdioctl)(fp, TIOCSETD, &idat);
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goto out;
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case LINUX_TIOCLINUX:
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error = copyin(SCARG(uap, data), &tioclinux, sizeof tioclinux);
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if (error != 0)
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goto out;
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switch (tioclinux) {
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case LINUX_TIOCLINUX_KERNMSG:
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/*
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* XXX needed to not fail for some things. Could
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* try to use TIOCCONS, but the char argument
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* specifies the VT #, not an fd.
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*/
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error = 0;
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goto out;
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case LINUX_TIOCLINUX_COPY:
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case LINUX_TIOCLINUX_PASTE:
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case LINUX_TIOCLINUX_UNBLANK:
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case LINUX_TIOCLINUX_LOADLUT:
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case LINUX_TIOCLINUX_READSHIFT:
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case LINUX_TIOCLINUX_READMOUSE:
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case LINUX_TIOCLINUX_VESABLANK:
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case LINUX_TIOCLINUX_CURCONS: /* could use VT_GETACTIVE */
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error = EINVAL;
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goto out;
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}
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break;
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case LINUX_TIOCGWINSZ:
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SCARG(&ia, com) = TIOCGWINSZ;
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break;
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case LINUX_TIOCSWINSZ:
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SCARG(&ia, com) = TIOCSWINSZ;
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break;
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case LINUX_TIOCGPGRP:
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SCARG(&ia, com) = TIOCGPGRP;
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break;
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case LINUX_TIOCSPGRP:
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SCARG(&ia, com) = TIOCSPGRP;
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break;
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case LINUX_FIONREAD:
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SCARG(&ia, com) = FIONREAD;
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break;
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case LINUX_FIONBIO:
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SCARG(&ia, com) = FIONBIO;
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break;
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case LINUX_FIOASYNC:
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SCARG(&ia, com) = FIOASYNC;
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break;
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case LINUX_TIOCEXCL:
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SCARG(&ia, com) = TIOCEXCL;
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break;
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case LINUX_TIOCNXCL:
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SCARG(&ia, com) = TIOCNXCL;
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break;
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case LINUX_TIOCCONS:
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SCARG(&ia, com) = TIOCCONS;
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break;
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case LINUX_TIOCNOTTY:
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SCARG(&ia, com) = TIOCNOTTY;
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break;
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case LINUX_TCSBRK:
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idat = (u_long)SCARG(uap, data);
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if (idat != 0)
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SCARG(&ia, com) = TIOCDRAIN;
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else {
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if ((error = (*bsdioctl)(fp, TIOCSBRK, NULL)) != 0)
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goto out;
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error = tsleep(&idat, PZERO | PCATCH, "linux_tcsbrk", hz / 4);
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if (error == EINTR || error == ERESTART) {
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(void)(*bsdioctl)(fp, TIOCCBRK, NULL);
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error = EINTR;
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} else
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error = (*bsdioctl)(fp, TIOCCBRK, NULL);
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goto out;
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}
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break;
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case LINUX_TIOCMGET:
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SCARG(&ia, com) = TIOCMGET;
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break;
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case LINUX_TIOCMSET:
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SCARG(&ia, com) = TIOCMSET;
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break;
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case LINUX_TIOCMBIC:
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SCARG(&ia, com) = TIOCMBIC;
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break;
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case LINUX_TIOCMBIS:
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SCARG(&ia, com) = TIOCMBIS;
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break;
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#ifdef LINUX_TIOCGPTN
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case LINUX_TIOCGPTN:
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#ifndef NO_DEV_PTM
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{
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struct ptmget ptm;
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error = (*bsdioctl)(fp, TIOCPTSNAME, &ptm);
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if (error != 0)
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goto out;
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error = copyout(&ptm.sfd, SCARG(uap, data),
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sizeof(ptm.sfd));
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goto out;
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}
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#endif /* NO_DEV_PTM */
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#endif /* LINUX_TIOCGPTN */
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#ifdef LINUX_TIOCSPTLCK
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case LINUX_TIOCSPTLCK:
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fd_putfile(SCARG(uap, fd));
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error = copyin(SCARG(uap, data), &idat, sizeof(idat));
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if (error)
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return error;
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DPRINTF(("TIOCSPTLCK %d\n", idat));
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return 0;
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#endif
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case LINUX_TCXONC:
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idat = (u_long)SCARG(uap, data);
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switch (idat) {
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case LINUX_TCOOFF:
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SCARG(&ia, com) = TIOCSTOP;
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break;
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case LINUX_TCOON:
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SCARG(&ia, com) = TIOCSTART;
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break;
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case LINUX_TCIOFF:
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case LINUX_TCION:
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default:
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error = EINVAL;
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goto out;
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}
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break;
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default:
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error = EINVAL;
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goto out;
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}
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SCARG(&ia, fd) = SCARG(uap, fd);
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SCARG(&ia, data) = SCARG(uap, data);
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error = sys_ioctl(curlwp, &ia, retval);
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out:
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fd_putfile(SCARG(uap, fd));
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return error;
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}
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