mm.c

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    1 /*      $NetBSD: mm.c,v 1.9 2006/11/16 01:32:45 christos Exp $  */
    2 
    3 /*-
    4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Christos Zoulas.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 
   40 #include <sys/cdefs.h>
   41 __KERNEL_RCSID(0, "$NetBSD: mm.c,v 1.9 2006/11/16 01:32:45 christos Exp $");
   42 
   43 /*
   44  * Memory special file
   45  */
   46 
   47 #include <sys/param.h>
   48 #include <sys/conf.h>
   49 #include <sys/buf.h>
   50 #include <sys/systm.h>
   51 #include <sys/uio.h>
   52 #include <sys/malloc.h>
   53 #include <sys/ioctl.h>
   54 #include <sys/proc.h>
   55 
   56 dev_type_ioctl(mmioctl);
   57 
   58 int
   59 mmioctl(dev_t dev, u_long cmd, caddr_t data, int flag,
   60     struct lwp *l)
   61 {
   62         switch (minor(dev)) {
   63         default:
   64                 switch (cmd) {
   65                 case FIONBIO:   /* We never block anyway */
   66                         return 0;
   67                 case FIOSETOWN:
   68                 case FIOGETOWN:
   69                 case TIOCGPGRP:
   70                 case TIOCSPGRP:
   71                         return ENOTTY;
   72                 case FIOASYNC:
   73                         if ((*(int *)data) == 0)
   74                                 return 0;
   75                         /*FALLTHROUGH*/
   76                 }
   77                 return EOPNOTSUPP;
   78         }
   79 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/mm.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mm.c