The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_ioctl.c

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    1 /*      $OpenBSD: linux_ioctl.c,v 1.10 2003/07/23 20:18:10 tedu Exp $   */
    2 /*      $NetBSD: linux_ioctl.c,v 1.14 1996/04/05 00:01:28 christos Exp $        */
    3 
    4 /*
    5  * Copyright (c) 1995 Frank van der Linden
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed for the NetBSD Project
   19  *      by Frank van der Linden
   20  * 4. The name of the author may not be used to endorse or promote products
   21  *    derived from this software without specific prior written permission
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   33  */
   34 
   35 #include <sys/param.h>
   36 #include <sys/proc.h>
   37 #include <sys/systm.h>
   38 #include <sys/ioctl.h>
   39 #include <sys/mount.h>
   40 
   41 #include <sys/socket.h>
   42 #include <net/if.h>
   43 #include <sys/sockio.h>
   44 
   45 #include <sys/syscallargs.h>
   46 
   47 #include <compat/linux/linux_types.h>
   48 #include <compat/linux/linux_signal.h>
   49 #include <compat/linux/linux_syscallargs.h>
   50 #include <compat/linux/linux_ioctl.h>
   51 
   52 #include <compat/ossaudio/ossaudio.h>
   53 #define LINUX_TO_OSS(v) (v)     /* do nothing, same ioctl() encoding */
   54 
   55 /*
   56  * Most ioctl command are just converted to their OpenBSD values,
   57  * and passed on. The ones that take structure pointers and (flag)
   58  * values need some massaging. This is done the usual way by
   59  * allocating stackgap memory, letting the actual ioctl call do its
   60  * work their and converting back the data afterwards.
   61  */
   62 int
   63 linux_sys_ioctl(p, v, retval)
   64         register struct proc *p;
   65         void *v;
   66         register_t *retval;
   67 {
   68         register struct linux_sys_ioctl_args /* {
   69                 syscallarg(int) fd;
   70                 syscallarg(u_long) com;
   71                 syscallarg(caddr_t) data;
   72         } */ *uap = v;
   73 
   74         switch (LINUX_IOCGROUP(SCARG(uap, com))) {
   75         case 'M':
   76                 return oss_ioctl_mixer(p, LINUX_TO_OSS(v), retval);
   77         case 'Q':
   78                 return oss_ioctl_sequencer(p, LINUX_TO_OSS(v), retval);
   79         case 'P':
   80                 return oss_ioctl_audio(p, LINUX_TO_OSS(v), retval);
   81         case 't':
   82         case 'f':
   83         case 'T':       /* XXX MIDI sequencer uses 'T' as well */
   84                 return linux_ioctl_termios(p, uap, retval);
   85         case 'S':
   86                 return linux_ioctl_cdrom(p, uap, retval);
   87         case 'r':       /* VFAT ioctls; not yet support */
   88                 return (EINVAL);
   89         case 0x89:
   90                 return linux_ioctl_socket(p, uap, retval);
   91         case 0x03:
   92                 return linux_ioctl_hdio(p, uap, retval);
   93         case 0x02:
   94                 return linux_ioctl_fdio(p, uap, retval);
   95         case 0x12:
   96                 return linux_ioctl_blkio(p, uap, retval);
   97         default:
   98                 return linux_machdepioctl(p, uap, retval);
   99         }
  100 }

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