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mm.c revision 1.1.2.3 
      1  1.1.2.3  nathanw /*	$NetBSD: mm.c,v 1.1.2.3 2002/09/17 21:19:22 nathanw Exp $	*/
      2  1.1.2.2  nathanw 
      3  1.1.2.2  nathanw /*-
      4  1.1.2.2  nathanw  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  1.1.2.2  nathanw  * All rights reserved.
      6  1.1.2.2  nathanw  *
      7  1.1.2.2  nathanw  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1.2.2  nathanw  * by Christos Zoulas.
      9  1.1.2.2  nathanw  *
     10  1.1.2.2  nathanw  * Redistribution and use in source and binary forms, with or without
     11  1.1.2.2  nathanw  * modification, are permitted provided that the following conditions
     12  1.1.2.2  nathanw  * are met:
     13  1.1.2.2  nathanw  * 1. Redistributions of source code must retain the above copyright
     14  1.1.2.2  nathanw  *    notice, this list of conditions and the following disclaimer.
     15  1.1.2.2  nathanw  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1.2.2  nathanw  *    notice, this list of conditions and the following disclaimer in the
     17  1.1.2.2  nathanw  *    documentation and/or other materials provided with the distribution.
     18  1.1.2.2  nathanw  * 3. All advertising materials mentioning features or use of this software
     19  1.1.2.2  nathanw  *    must display the following acknowledgement:
     20  1.1.2.2  nathanw  *        This product includes software developed by the NetBSD
     21  1.1.2.2  nathanw  *        Foundation, Inc. and its contributors.
     22  1.1.2.2  nathanw  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  1.1.2.2  nathanw  *    contributors may be used to endorse or promote products derived
     24  1.1.2.2  nathanw  *    from this software without specific prior written permission.
     25  1.1.2.2  nathanw  *
     26  1.1.2.2  nathanw  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  1.1.2.2  nathanw  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  1.1.2.2  nathanw  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  1.1.2.2  nathanw  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  1.1.2.2  nathanw  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  1.1.2.2  nathanw  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  1.1.2.2  nathanw  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  1.1.2.2  nathanw  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  1.1.2.2  nathanw  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  1.1.2.2  nathanw  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  1.1.2.2  nathanw  * POSSIBILITY OF SUCH DAMAGE.
     37  1.1.2.2  nathanw  */
     38  1.1.2.2  nathanw 
     39  1.1.2.2  nathanw 
     40  1.1.2.2  nathanw #include <sys/cdefs.h>
     41  1.1.2.3  nathanw __KERNEL_RCSID(0, "$NetBSD: mm.c,v 1.1.2.3 2002/09/17 21:19:22 nathanw Exp $");
     42  1.1.2.2  nathanw 
     43  1.1.2.2  nathanw /*
     44  1.1.2.2  nathanw  * Memory special file
     45  1.1.2.2  nathanw  */
     46  1.1.2.2  nathanw 
     47  1.1.2.2  nathanw #include <sys/param.h>
     48  1.1.2.2  nathanw #include <sys/conf.h>
     49  1.1.2.2  nathanw #include <sys/buf.h>
     50  1.1.2.2  nathanw #include <sys/systm.h>
     51  1.1.2.2  nathanw #include <sys/uio.h>
     52  1.1.2.2  nathanw #include <sys/malloc.h>
     53  1.1.2.2  nathanw #include <sys/ioctl.h>
     54  1.1.2.2  nathanw #include <sys/proc.h>
     55  1.1.2.2  nathanw 
     56  1.1.2.3  nathanw dev_type_ioctl(mmioctl);
     57  1.1.2.3  nathanw 
     58  1.1.2.2  nathanw int
     59  1.1.2.2  nathanw mmioctl(dev, cmd, data, flag, p)
     60  1.1.2.2  nathanw 	dev_t dev;
     61  1.1.2.2  nathanw 	u_long cmd;
     62  1.1.2.2  nathanw 	caddr_t data;
     63  1.1.2.2  nathanw 	int flag;
     64  1.1.2.2  nathanw 	struct proc *p;
     65  1.1.2.2  nathanw {
     66  1.1.2.2  nathanw 	switch (minor(dev)) {
     67  1.1.2.2  nathanw 	case DEV_MEM:
     68  1.1.2.2  nathanw 	case DEV_KMEM:
     69  1.1.2.2  nathanw 	case DEV_NULL:
     70  1.1.2.2  nathanw 	case DEV_ZERO:
     71  1.1.2.2  nathanw 		switch (cmd) {
     72  1.1.2.2  nathanw 		case FIONBIO:	/* We never block anyway */
     73  1.1.2.2  nathanw 			return 0;
     74  1.1.2.2  nathanw 		case TIOCGPGRP:
     75  1.1.2.2  nathanw 		case TIOCSPGRP:
     76  1.1.2.2  nathanw 			return ENOTTY;
     77  1.1.2.2  nathanw 		case FIOASYNC:
     78  1.1.2.2  nathanw 			if ((*(int *)data) == 0)
     79  1.1.2.2  nathanw 				return 0;
     80  1.1.2.2  nathanw 			/*FALLTHROUGH*/
     81  1.1.2.2  nathanw 		}
     82  1.1.2.2  nathanw 		/*FALLTHROUGH*/
     83  1.1.2.2  nathanw 	default:
     84  1.1.2.2  nathanw 		return EOPNOTSUPP;
     85  1.1.2.2  nathanw 	}
     86  1.1.2.2  nathanw }
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