text: /*
   * mycall.c
   *
   * 05 Jun 93	Terry Lambert		Split out of newsyscall.c
   *
   * Copyright (c) 1993 Terrence R. Lambert.
   * 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 by Terrence R. Lambert.
   * 4. The name Terrence R. Lambert may not be used to endorse or promote
   *    products derived from this software without specific prior written
   *    permission.
   *
   * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``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 TERRENCE R. LAMBERT 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.
   *
   *	$NetBSD: mycall.c,v 1.2 1997/10/13 11:20:41 lukem Exp $
   */
  #include <sys/param.h>
  #include <sys/ioctl.h>
  #include <sys/systm.h>
  
  
  /*
   * This is the actual code for system call...  it can be static because
   * we've externed it up above... the only plae it needs to be referenced
   * is the sysent we are interested in.
   *
   * To write your own system call using this as a template, you could strip
   * out this code and use the rest as a prototype module, changing only the
   * function names and the number of arguments to the call in the module
   * specific "sysent".
   *
   * You would have to use the "-R" option of "ld" to ensure a linkable file
   * if you were to do this, since you would need to combine multiple ".o"
   * files into a single ".o" file for use by "modload".
   */
  int
  mycall( p, uap, retval)
  struct proc	*p;
  void		*uap;
  int		retval[];
  {
  	/*
  	 * Our new system call simply prints a message; it takes no
  	 * arguments.
  	 */
  
  	printf( "\nI am a loaded system call using the kernel printf!\n");
  	printf( "I will print this message each time I am called!\n");
  
  	return( 0);	/* success (or error code from errno.h)*/
  }
  
  /*
   * EOF -- This file has not been truncated.
   */
  