/*      $NetBSD: freebsd_ioctl.c,v 1.15 2007/12/20 23:02:47 dsl Exp $   */

/*
* Copyright (c) 1995 Frank van der Linden
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project
*      by Frank van der Linden
* 4. 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: freebsd_ioctl.c,v 1.15 2007/12/20 23:02:47 dsl Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/sockio.h>

#include <sys/syscallargs.h>

#include <net/if.h>

#include <compat/sys/sockio.h>

#include <compat/freebsd/freebsd_syscallargs.h>
#include <compat/common/compat_util.h>
#include <compat/freebsd/freebsd_ioctl.h>

#include <compat/ossaudio/ossaudio.h>
#include <compat/ossaudio/ossaudiovar.h>

/* The FreeBSD and OSS(Linux) encodings of ioctl R/W differ. */
static void freebsd_to_oss(const struct freebsd_sys_ioctl_args *,
                          struct oss_sys_ioctl_args *);

static void
freebsd_to_oss(const struct freebsd_sys_ioctl_args *uap, struct oss_sys_ioctl_args *rap)
{
       u_long ocmd, ncmd;

       ocmd = SCARG(uap, com);
       ncmd = ocmd &~ FREEBSD_IOC_DIRMASK;
       switch(ocmd & FREEBSD_IOC_DIRMASK) {
       case FREEBSD_IOC_VOID:  ncmd |= OSS_IOC_VOID;  break;
       case FREEBSD_IOC_OUT:   ncmd |= OSS_IOC_OUT;   break;
       case FREEBSD_IOC_IN:    ncmd |= OSS_IOC_IN;    break;
       case FREEBSD_IOC_INOUT: ncmd |= OSS_IOC_INOUT; break;
       }
       SCARG(rap, fd) = SCARG(uap, fd);
       SCARG(rap, com) = ncmd;
       SCARG(rap, data) = SCARG(uap, data);
}


static void freebsd_to_netbsd_ifioctl(const struct freebsd_sys_ioctl_args *uap,
                                     struct sys_ioctl_args *nap);

static void
freebsd_to_netbsd_ifioctl(const struct freebsd_sys_ioctl_args *uap, struct sys_ioctl_args *nap)
{
       u_long ocmd, ncmd;
       ocmd = SCARG(uap, com);
       switch (ocmd) {
       case FREEBSD_SIOCALIFADDR:
               ncmd =SIOCALIFADDR;
               break;
       case FREEBSD_SIOCGLIFADDR:
               ncmd =SIOCGLIFADDR;
               break;
       case FREEBSD_SIOCDLIFADDR:
               ncmd =SIOCDLIFADDR;
               break;
       case FREEBSD_SIOCGIFMTU:
               ncmd = SIOCGIFMTU;
               break;
       case FREEBSD_SIOCSIFMTU:
               ncmd = SIOCSIFMTU;
               break;
       default:
               ncmd = ocmd;
               break;
       }
       SCARG(nap, fd) = SCARG(uap, fd);
       SCARG(nap, com) = ncmd;
       SCARG(nap, data) = SCARG(uap, data);
}

int
freebsd_sys_ioctl(struct lwp *l, const struct freebsd_sys_ioctl_args *uap, register_t *retval)
{
       /* {
               syscallarg(int) fd;
               syscallarg(u_long) com;
               syscallarg(void *) data;
       } */
       struct oss_sys_ioctl_args ap;
       struct sys_ioctl_args nap;

       /*
        * XXX - <sys/cdio.h>'s incompatibility
        *      _IO('c', 25..27, *):    incompatible
        *      _IO('c', 28... , *):    not exist
        */
       /* XXX - <sys/mtio.h> */
       /* XXX - <sys/scsiio.h> */
       /* XXX - should convert machine dependent ioctl()s */

       switch (FREEBSD_IOCGROUP(SCARG(uap, com))) {
       case 'M':
               freebsd_to_oss(uap, &ap);
               return oss_ioctl_mixer(l, &ap, retval);
       case 'Q':
               freebsd_to_oss(uap, &ap);
               return oss_ioctl_sequencer(l, &ap, retval);
       case 'P':
               freebsd_to_oss(uap, &ap);
               return oss_ioctl_audio(l, &ap, retval);
       case 'i':
               freebsd_to_netbsd_ifioctl(uap, &nap);
               return sys_ioctl(l, &nap, retval);
       default:
               return sys_ioctl(l, (const void *)uap, retval);
       }
}