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linux_ioctl.c revision 1.17 
      1 /*	$NetBSD: linux_ioctl.c,v 1.17 1998/01/15 14:52:13 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Frank van der Linden
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed for the NetBSD Project
     18  *      by Frank van der Linden
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/param.h>
     35 #include <sys/proc.h>
     36 #include <sys/systm.h>
     37 #include <sys/ioctl.h>
     38 #include <sys/mount.h>
     39 
     40 #include <sys/socket.h>
     41 #include <net/if.h>
     42 #include <sys/sockio.h>
     43 
     44 #include <sys/syscallargs.h>
     45 
     46 #include <compat/linux/linux_types.h>
     47 #include <compat/linux/linux_signal.h>
     48 #include <compat/linux/linux_syscallargs.h>
     49 #include <compat/linux/linux_ioctl.h>
     50 
     51 #include <compat/ossaudio/ossaudio.h>
     52 #define LINUX_TO_OSS(v) (v)	/* do nothing, same ioctl() encoding */
     53 
     54 /*
     55  * Most ioctl command are just converted to their NetBSD values,
     56  * and passed on. The ones that take structure pointers and (flag)
     57  * values need some massaging. This is done the usual way by
     58  * allocating stackgap memory, letting the actual ioctl call do its
     59  * work there and converting back the data afterwards.
     60  */
     61 int
     62 linux_sys_ioctl(p, v, retval)
     63 	register struct proc *p;
     64 	void *v;
     65 	register_t *retval;
     66 {
     67 	register struct linux_sys_ioctl_args /* {
     68 		syscallarg(int) fd;
     69 		syscallarg(u_long) com;
     70 		syscallarg(caddr_t) data;
     71 	} */ *uap = v;
     72 
     73 	switch (LINUX_IOCGROUP(SCARG(uap, com))) {
     74 	case 'M':
     75 		return oss_ioctl_mixer(p, LINUX_TO_OSS(v), retval);
     76 	case 'Q':
     77 		return oss_ioctl_sequencer(p, LINUX_TO_OSS(v), retval);
     78 	case 'P':
     79 		return oss_ioctl_audio(p, LINUX_TO_OSS(v), retval);
     80 	case 'S':
     81 		return linux_ioctl_cdrom(p, uap, retval);
     82 	case 'T':
     83 		return linux_ioctl_termios(p, uap, retval);
     84 	case 0x89:
     85 		return linux_ioctl_socket(p, uap, retval);
     86 	default:
     87 		return linux_machdepioctl(p, uap, retval);
     88 	}
     89 }
     90