NetBSD/sys/compat/svr4/svr4_ioctl.c

/*	$NetBSD: svr4_ioctl.c,v 1.5 1994/10/26 05:27:50 cgd Exp $	*/

/*
 * Copyright (c) 1994 Christos Zoulas
 * 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. 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/systm.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 <sys/mount.h>
#include <net/if.h>

#include <sys/syscallargs.h>

#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_syscallargs.h>

#define	SVR4_IOC_VOID	0x20000000
#define	SVR4_IOC_OUT	0x40000000
#define	SVR4_IOC_IN	0x80000000
#define	SVR4_IOC_INOUT	(SVR4_IOC_IN|SVR4_IOC_OUT)

#ifdef DEBUG_SVR4
/*
 * Decode an ioctl command symbolically
 */
static void
svr4_decode_cmd(cmd, dir, c, num, argsiz)
    int cmd;
    char **dir, *c;
    int *num, *argsiz;
{
    *dir = "";
    if (cmd & SVR4_IOC_VOID)
	*dir = "V";
    if (cmd & SVR4_IOC_INOUT)
	*dir = "RW";
    if (cmd & SVR4_IOC_OUT)
	*dir = "W";
    if (cmd & SVR4_IOC_IN)
	*dir = "R";
    if (cmd & (SVR4_IOC_INOUT|SVR4_IOC_VOID))
	*argsiz = (cmd >> 16) & 0xff;
    else
	*argsiz = -1;

    *c = (cmd >> 8) & 0xff;
    *num = cmd & 0xff;
}
#endif

int
svr4_ioctl(p, uap, retval)
    register struct proc *p;
    register struct svr4_ioctl_args *uap;
    register_t *retval;
{
    char *dir;
    char c;
    int  num;
    int  argsiz;
#ifdef DEBUG_SVR4
    svr4_decode_cmd(SCARG(uap, com), &dir, &c, &num, &argsiz);
    printf("svr4_ioctl(%d, _IO%s(%c, %d, %d))\n", SCARG(uap, fd),
	   dir, c, num, argsiz);
#endif
    return 0;
}