/*
 * Copyright (c) 1994 Scott Bartram
 * All rights reserved.
 *
 * based on compat/sunos/sun_ioctl.c
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/param.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/termios.h>
#include <sys/tty.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>

#include <compat/ibcs2/ibcs2_types.h>
#include <compat/ibcs2/ibcs2_termios.h>

#ifdef DEBUG_IBCS2
#define DPRINTF(s)	printf s
#else
#define DPRINTF(s)
#endif

/*
 * iBCS2 ioctl calls.
 */

static struct speedtab sptab[] = {
	{ 0, 0 },
	{ 50, 1 },
	{ 75, 2 },
	{ 110, 3 },
	{ 134, 4 },
	{ 135, 4 },
	{ 150, 5 },
	{ 200, 6 },
	{ 300, 7 },
	{ 600, 8 },
	{ 1200, 9 },
	{ 1800, 10 },
	{ 2400, 11 },
	{ 4800, 12 },
	{ 9600, 13 },
	{ 19200, 14 },
	{ 38400, 15 },
	{ -1, -1 }
};

static u_long s2btab[] = { 
	0,
	50,
	75,
	110,
	134,
	150,
	200,
	300,
	600,
	1200,
	1800,
	2400,
	4800,
	9600,
	19200,
	38400,
};

static void
stios2btios(st, bt)
	struct ibcs2_termios *st;
	struct termios *bt;
{
	register u_long l, r;

	l = st->c_iflag;
	r = 	((l & IBCS2_IGNBRK) ? IGNBRK	: 0);
	r |=	((l & IBCS2_BRKINT) ? BRKINT	: 0);
	r |=	((l & IBCS2_IGNPAR) ? IGNPAR	: 0);
	r |=	((l & IBCS2_PARMRK) ? PARMRK	: 0);
	r |=	((l & IBCS2_INPCK) ? INPCK	: 0);
	r |=	((l & IBCS2_ISTRIP) ? ISTRIP	: 0);
	r |= 	((l & IBCS2_INLCR) ? INLCR	: 0);
	r |=	((l & IBCS2_IGNCR) ? IGNCR	: 0);
	r |=	((l & IBCS2_ICRNL) ? ICRNL	: 0);
	r |=	((l & IBCS2_IXON) ? IXON	: 0);
	r |=	((l & IBCS2_IXANY) ? IXANY	: 0);
	r |=	((l & IBCS2_IXOFF) ? IXOFF	: 0);
	r |=	((l & IBCS2_IMAXBEL) ? IMAXBEL	: 0);
	bt->c_iflag = r;

	l = st->c_oflag;
	r = 	((l & IBCS2_OPOST) ? OPOST	: 0);
	r |=	((l & IBCS2_ONLCR) ? ONLCR	: 0);
	r |=	((l & IBCS2_TAB3) ? OXTABS	: 0);
	bt->c_oflag = r;

	l = st->c_cflag;
	r = 	((l & IBCS2_CS6) ? CS6		: 0);
	r |=	((l & IBCS2_CS7) ? CS7		: 0);
	r |=	((l & IBCS2_CS8) ? CS8		: 0);
	r |=	((l & IBCS2_CSTOPB) ? CSTOPB	: 0);
	r |=	((l & IBCS2_CREAD) ? CREAD	: 0);
	r |= 	((l & IBCS2_PARENB) ? PARENB	: 0);
	r |=	((l & IBCS2_PARODD) ? PARODD	: 0);
	r |=	((l & IBCS2_HUPCL) ? HUPCL	: 0);
	r |=	((l & IBCS2_CLOCAL) ? CLOCAL	: 0);
	bt->c_cflag = r;

	bt->c_ispeed = bt->c_ospeed = s2btab[l & 0x0000000f];

	l = st->c_lflag;
	r = 	((l & IBCS2_ISIG) ? ISIG	: 0);
	r |=	((l & IBCS2_ICANON) ? ICANON	: 0);
	r |=	((l & IBCS2_ECHO) ? ECHO	: 0);
	r |=	((l & IBCS2_ECHOE) ? ECHOE	: 0);
	r |=	((l & IBCS2_ECHOK) ? ECHOK	: 0);
	r |=	((l & IBCS2_ECHONL) ? ECHONL	: 0);
	r |= 	((l & IBCS2_NOFLSH) ? NOFLSH	: 0);
	r |=	((l & IBCS2_TOSTOP) ? TOSTOP	: 0);
	bt->c_lflag = r;

	bt->c_cc[VINTR]	= st->c_cc[IBCS2_VINTR] ? st->c_cc[IBCS2_VINTR]
		: _POSIX_VDISABLE;
	bt->c_cc[VQUIT] = st->c_cc[IBCS2_VQUIT] ? st->c_cc[IBCS2_VQUIT]
		: _POSIX_VDISABLE;
	bt->c_cc[VERASE] = st->c_cc[IBCS2_VERASE] ? st->c_cc[IBCS2_VERASE]
		: _POSIX_VDISABLE;
	bt->c_cc[VKILL] = st->c_cc[IBCS2_VKILL] ? st->c_cc[IBCS2_VKILL]
		: _POSIX_VDISABLE;
	bt->c_cc[VEOF] = st->c_cc[IBCS2_VEOF] ? st->c_cc[IBCS2_VEOF]
		: _POSIX_VDISABLE;
	bt->c_cc[VEOL] = st->c_cc[IBCS2_VEOL] ? st->c_cc[IBCS2_VEOL]
		: _POSIX_VDISABLE;
	bt->c_cc[VEOL2] = st->c_cc[IBCS2_VEOL2] ? st->c_cc[IBCS2_VEOL2]
		: _POSIX_VDISABLE;
#if 0
	bt->c_cc[VSWTCH] = st->c_cc[IBCS2_VSWTCH] ? st->c_cc[IBCS2_VSWTCH]
		: _POSIX_VDISABLE;
#endif
	bt->c_cc[VSTART] = st->c_cc[IBCS2_VSTART] ? st->c_cc[IBCS2_VSTART]
		: _POSIX_VDISABLE;
	bt->c_cc[VSTOP] = st->c_cc[IBCS2_VSTART] ? st->c_cc[IBCS2_VSTART]
		: _POSIX_VDISABLE;
	bt->c_cc[VSUSP] = st->c_cc[IBCS2_VSUSP] ? st->c_cc[IBCS2_VSUSP]
		: _POSIX_VDISABLE;
	bt->c_cc[VDSUSP] = _POSIX_VDISABLE;
	bt->c_cc[VREPRINT] = _POSIX_VDISABLE;
	bt->c_cc[VDISCARD] = _POSIX_VDISABLE;
	bt->c_cc[VWERASE]  = _POSIX_VDISABLE;
	bt->c_cc[VLNEXT]   = _POSIX_VDISABLE;
	bt->c_cc[VSTATUS]  = _POSIX_VDISABLE;
}


static void
btios2stios(bt, st)
	struct termios *bt;
	struct ibcs2_termios *st;
{
	register u_long l, r;

	l = bt->c_iflag;
	r = 	((l &  IGNBRK) ? IBCS2_IGNBRK	: 0);
	r |=	((l &  BRKINT) ? IBCS2_BRKINT	: 0);
	r |=	((l &  IGNPAR) ? IBCS2_IGNPAR	: 0);
	r |=	((l &  PARMRK) ? IBCS2_PARMRK	: 0);
	r |=	((l &   INPCK) ? IBCS2_INPCK	: 0);
	r |=	((l &  ISTRIP) ? IBCS2_ISTRIP	: 0);
	r |=	((l &   INLCR) ? IBCS2_INLCR	: 0);
	r |=	((l &   IGNCR) ? IBCS2_IGNCR	: 0);
	r |=	((l &   ICRNL) ? IBCS2_ICRNL	: 0);
	r |=	((l &    IXON) ? IBCS2_IXON	: 0);
	r |=	((l &   IXANY) ? IBCS2_IXANY	: 0);
	r |=	((l &   IXOFF) ? IBCS2_IXOFF	: 0);
	r |=	((l & IMAXBEL) ? IBCS2_IMAXBEL	: 0);
	st->c_iflag = r;

	l = bt->c_oflag;
	r =	((l &   OPOST) ? IBCS2_OPOST	: 0);
	r |=	((l &   ONLCR) ? IBCS2_ONLCR	: 0);
	r |=	((l &  OXTABS) ? IBCS2_TAB3	: 0);
	st->c_oflag = r;

	l = bt->c_cflag;
	r = 	((l &     CS6) ? IBCS2_CS6	: 0);
	r |=	((l &     CS7) ? IBCS2_CS7	: 0);
	r |=	((l &     CS8) ? IBCS2_CS8	: 0);
	r |=	((l &  CSTOPB) ? IBCS2_CSTOPB	: 0);
	r |=	((l &   CREAD) ? IBCS2_CREAD	: 0);
	r |=	((l &  PARENB) ? IBCS2_PARENB	: 0);
	r |=	((l &  PARODD) ? IBCS2_PARODD	: 0);
	r |=	((l &   HUPCL) ? IBCS2_HUPCL	: 0);
	r |=	((l &  CLOCAL) ? IBCS2_CLOCAL	: 0);
	st->c_cflag = r;

	l = bt->c_lflag;
	r =	((l &    ISIG) ? IBCS2_ISIG	: 0);
	r |=	((l &  ICANON) ? IBCS2_ICANON	: 0);
	r |=	((l &    ECHO) ? IBCS2_ECHO	: 0);
	r |=	((l &   ECHOE) ? IBCS2_ECHOE	: 0);
	r |=	((l &   ECHOK) ? IBCS2_ECHOK	: 0);
	r |=	((l &  ECHONL) ? IBCS2_ECHONL	: 0);
	r |=	((l &  NOFLSH) ? IBCS2_NOFLSH	: 0);
	r |=	((l &  TOSTOP) ? IBCS2_TOSTOP	: 0);
	st->c_lflag = r;

	l = ttspeedtab(bt->c_ospeed, sptab);
	if (l >= 0)
		st->c_cflag |= l;

	st->c_cc[IBCS2_VINTR] = bt->c_cc[VINTR] != _POSIX_VDISABLE
		? bt->c_cc[VINTR] : 0;
	st->c_cc[IBCS2_VQUIT] = bt->c_cc[VQUIT] != _POSIX_VDISABLE
		? bt->c_cc[VQUIT] : 0;
	st->c_cc[IBCS2_VERASE] = bt->c_cc[VERASE] != _POSIX_VDISABLE
		? bt->c_cc[VERASE] : 0;
	st->c_cc[IBCS2_VKILL] = bt->c_cc[VKILL] != _POSIX_VDISABLE
		? bt->c_cc[VKILL] : 0;
	st->c_cc[IBCS2_VEOF] = bt->c_cc[VEOF] != _POSIX_VDISABLE
		? bt->c_cc[VEOF] : 0;
	st->c_cc[IBCS2_VEOL] = bt->c_cc[VEOL] != _POSIX_VDISABLE
		? bt->c_cc[VEOL] : 0;
	st->c_cc[IBCS2_VEOL2] = bt->c_cc[VEOL2] != _POSIX_VDISABLE
		? bt->c_cc[VEOL2] : 0;
	st->c_cc[IBCS2_VSWTCH] = 0;
	st->c_cc[IBCS2_VSUSP]= bt->c_cc[VSUSP] != _POSIX_VDISABLE
		? bt->c_cc[VSUSP] : 0;
	st->c_cc[IBCS2_VSTART] = bt->c_cc[VSTART] != _POSIX_VDISABLE
		? bt->c_cc[VSTART] : 0;
	st->c_cc[IBCS2_VSTOP] = bt->c_cc[VSTOP] != _POSIX_VDISABLE
		? bt->c_cc[VSTOP] : 0;

	st->c_line = 0;
}

static void
stios2stio(ts, t)
	struct ibcs2_termios *ts;
	struct ibcs2_termio *t;
{
	t->c_iflag = ts->c_iflag;
	t->c_oflag = ts->c_oflag;
	t->c_cflag = ts->c_cflag;
	t->c_lflag = ts->c_lflag;
	t->c_line  = ts->c_line;
	bcopy(ts->c_cc, t->c_cc, IBCS2_NCC);
}

static void
stio2stios(t, ts)
	struct ibcs2_termio *t;
	struct ibcs2_termios *ts;
{
	ts->c_iflag = t->c_iflag;
	ts->c_oflag = t->c_oflag;
	ts->c_cflag = t->c_cflag;
	ts->c_lflag = t->c_lflag;
	ts->c_line  = t->c_line;
	bcopy(t->c_cc, ts->c_cc, IBCS2_NCC);
}

struct ibcs2_ioctl_args {
	int	fd;
	int	cmd;
	caddr_t	data;
};

int
ibcs2_ioctl(p, uap, retval)
	register struct proc *p;
	register struct ibcs2_ioctl_args *uap;
	int *retval;
{
	register struct filedesc *fdp = p->p_fd;
	register struct file *fp;
	register int (*ctl)();
	int error;

	if ((unsigned)uap->fd >= fdp->fd_nfiles ||
	    (fp = fdp->fd_ofiles[uap->fd]) == NULL) {
		DPRINTF(("ibcs2_ioctl(%d): bad fd %d ", p->p_pid, uap->fd));
		return EBADF;
	}

	if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
		DPRINTF(("ibcs2_ioctl(%d): bad fp flag ", p->p_pid));
		return EBADF;
	}

	ctl = fp->f_ops->fo_ioctl;

	switch (uap->cmd) {
	case IBCS2_TCGETA:
	case IBCS2_XCGETA:
	case IBCS2_OXCGETA:
	    {
		struct termios bts;
		struct ibcs2_termios sts;
		struct ibcs2_termio st;
	
		if ((error = (*ctl)(fp, TIOCGETA, (caddr_t)&bts, p)) != 0)
			return error;
	
		btios2stios (&bts, &sts);
		if (uap->cmd == IBCS2_TCGETA) {
			stios2stio (&sts, &st);
			error = copyout((caddr_t)&st, uap->data, sizeof (st));
			if (error)
				DPRINTF(("ibcs2_ioctl(%d): copyout failed ",
					 p->p_pid));
			return error;
		} else
			return copyout((caddr_t)&sts, uap->data, sizeof (sts));
		/*NOTREACHED*/
	    }
	case IBCS2_TCSETA:
	case IBCS2_TCSETAW:
	case IBCS2_TCSETAF:
	    {
		struct termios bts;
		struct ibcs2_termios sts;
		struct ibcs2_termio st;

		if ((error = copyin(uap->data, (caddr_t)&st, sizeof (st)))
		    != 0) {
			DPRINTF(("ibcs2_ioctl(%d): TCSET copyin failed ",
				 p->p_pid));
			return error;
		}

		/* get full BSD termios so we don't lose information */
		if ((error = (*ctl)(fp, TIOCGETA, (caddr_t)&bts, p)) != 0) {
			DPRINTF(("ibcs2_ioctl(%d): TCSET ctl failed fd %d ",
				 p->p_pid, uap->fd));
			return error;
		}

		/*
		 * convert to iBCS2 termios, copy in information from
		 * termio, and convert back, then set new values.
		 */
		btios2stios(&bts, &sts);
		stio2stios(&st, &sts);
		stios2btios(&sts, &bts);

		return (*ctl)(fp, uap->cmd - IBCS2_TCSETA + TIOCSETA,
		    (caddr_t)&bts, p);
	    }
	case IBCS2_XCSETA:
	case IBCS2_XCSETAW:
	case IBCS2_XCSETAF:
	    {
		struct termios bts;
		struct ibcs2_termios sts;

		if ((error = copyin(uap->data, (caddr_t)&sts,
				    sizeof (sts))) != 0) {
			return error;
		}
		stios2btios (&sts, &bts);
		return (*ctl)(fp, uap->cmd - IBCS2_XCSETA + TIOCSETA,
		    (caddr_t)&bts, p);
	    }
	case IBCS2_OXCSETA:
	case IBCS2_OXCSETAW:
	case IBCS2_OXCSETAF:
	    {
		struct termios bts;
		struct ibcs2_termios sts;

		if ((error = copyin(uap->data, (caddr_t)&sts,
				    sizeof (sts))) != 0) {
			return error;
		}
		stios2btios (&sts, &bts);
		return (*ctl)(fp, uap->cmd - IBCS2_OXCSETA + TIOCSETA,
		    (caddr_t)&bts, p);
	    }
	case IBCS2_TCSBRK:
		DPRINTF(("ibcs2_ioctl(%d): TCSBRK ", p->p_pid));
		return ENOSYS;
	case IBCS2_TCXONC:
		DPRINTF(("ibcs2_ioctl(%d): TCXONC ", p->p_pid));
		return ENOSYS;
	case IBCS2_TCFLSH:
		DPRINTF(("ibcs2_ioctl(%d): TCFLSH ", p->p_pid));
		return ENOSYS;
	case IBCS2_TIOCGWINSZ:
		DPRINTF(("ibcs2_ioctl(%d): TIOCGWINSZ ", p->p_pid));
		return ENOSYS;

	case IBCS2_TIOCSWINSZ:
		DPRINTF(("ibcs2_ioctl(%d): TIOCSWINSZ ", p->p_pid));
		return ENOSYS;

	case IBCS2_TIOCGPGRP:
		return copyout((caddr_t)&p->p_pgrp->pg_id, uap->data,
				sizeof(p->p_pgrp->pg_id));

	case IBCS2_TIOCSPGRP:	/* XXX - is uap->data a pointer to pgid? */
		{
			struct setpgid_args {
				int     pid;
				int     pgid;
			} sa;

			sa.pid = 0;
			sa.pgid = (int)uap->data;
			if (error = setpgid(p, &sa, retval))
				return error;
			return 0;
		}

	case IBCS2_TCGETSC:	/* SCO console - get scancode flags */
		return ENOSYS;
	case IBCS2_TCSETSC:	/* SCO console - set scancode flags */
		return ENOSYS;

	default:
		DPRINTF(("ibcs2_ioctl(%d): unknown cmd 0x%x ",
			 p->p_pid, uap->cmd));
		return ENOSYS;
	}
	return ENOSYS;
}