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freebsd_ioctl.c revision 1.5 
      1 /*	$NetBSD: freebsd_ioctl.c,v 1.5 2000/12/01 12:28:31 jdolecek 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/systm.h>
     36 #include <sys/proc.h>
     37 #include <sys/mount.h>
     38 #include <sys/sockio.h>
     39 
     40 #include <sys/syscallargs.h>
     41 
     42 #include <net/if.h>
     43 
     44 #include <compat/freebsd/freebsd_syscallargs.h>
     45 #include <compat/common/compat_util.h>
     46 #include <compat/freebsd/freebsd_ioctl.h>
     47 
     48 #include <compat/ossaudio/ossaudio.h>
     49 #include <compat/ossaudio/ossaudiovar.h>
     50 
     51 /* The FreeBSD and OSS(Linux) encodings of ioctl R/W differ. */
     52 static void freebsd_to_oss(struct freebsd_sys_ioctl_args *,
     53 			   struct oss_sys_ioctl_args *);
     54 
     55 static void
     56 freebsd_to_oss(uap, rap)
     57 struct freebsd_sys_ioctl_args *uap;
     58 struct oss_sys_ioctl_args *rap;
     59 {
     60 	u_long ocmd, ncmd;
     61 
     62         ocmd = SCARG(uap, com);
     63         ncmd = ocmd &~ FREEBSD_IOC_DIRMASK;
     64 	switch(ocmd & FREEBSD_IOC_DIRMASK) {
     65         case FREEBSD_IOC_VOID:  ncmd |= OSS_IOC_VOID;  break;
     66         case FREEBSD_IOC_OUT:   ncmd |= OSS_IOC_OUT;   break;
     67         case FREEBSD_IOC_IN:    ncmd |= OSS_IOC_IN;    break;
     68         case FREEBSD_IOC_INOUT: ncmd |= OSS_IOC_INOUT; break;
     69         }
     70         SCARG(rap, fd) = SCARG(uap, fd);
     71         SCARG(rap, com) = ncmd;
     72         SCARG(rap, data) = SCARG(uap, data);
     73 }
     74 
     75 
     76 static void freebsd_to_netbsd_ifioctl(struct freebsd_sys_ioctl_args *uap,
     77 				      struct sys_ioctl_args *nap);
     78 
     79 static void
     80 freebsd_to_netbsd_ifioctl(uap, nap)
     81 	struct freebsd_sys_ioctl_args *uap;
     82 	struct sys_ioctl_args *nap;
     83 {
     84 	u_long ocmd, ncmd;
     85 	ocmd = SCARG(uap, com);
     86 	switch (ocmd) {
     87 	case FREEBSD_SIOCALIFADDR:
     88 		ncmd =SIOCALIFADDR;
     89 		break;
     90 	case FREEBSD_SIOCGLIFADDR:
     91 		ncmd =SIOCGLIFADDR;
     92 		break;
     93 	case FREEBSD_SIOCDLIFADDR:
     94 		ncmd =SIOCDLIFADDR;
     95 		break;
     96 	case FREEBSD_SIOCGIFMTU:
     97 		ncmd = SIOCGIFMTU;
     98 		break;
     99 	case FREEBSD_SIOCSIFMTU:
    100 		ncmd = SIOCSIFMTU;
    101 		break;
    102 	default:
    103 		ncmd = ocmd;
    104 		break;
    105 	}
    106 	SCARG(nap, fd) = SCARG(uap, fd);
    107 	SCARG(nap, com) = ncmd;
    108 	SCARG(nap, data) = SCARG(uap, data);
    109 }
    110 
    111 int
    112 freebsd_sys_ioctl(p, v, retval)
    113 	struct proc *p;
    114 	void *v;
    115 	register_t *retval;
    116 {
    117 	struct freebsd_sys_ioctl_args /* {
    118 		syscallarg(int) fd;
    119 		syscallarg(u_long) com;
    120 		syscallarg(caddr_t) data;
    121 	} */ *uap = v;
    122         struct oss_sys_ioctl_args ap;
    123 	struct sys_ioctl_args nap;
    124 
    125 	/*
    126 	 * XXX - <sys/cdio.h>'s incompatibility
    127 	 *	_IO('c', 25..27, *):	incompatible
    128 	 *	_IO('c', 28... , *):	not exist
    129 	 */
    130 	/* XXX - <sys/mtio.h> */
    131 	/* XXX - <sys/scsiio.h> */
    132 	/* XXX - should convert machine dependent ioctl()s */
    133 
    134 	switch (FREEBSD_IOCGROUP(SCARG(uap, com))) {
    135 	case 'M':
    136         	freebsd_to_oss(uap, &ap);
    137 		return oss_ioctl_mixer(p, &ap, retval);
    138 	case 'Q':
    139         	freebsd_to_oss(uap, &ap);
    140 		return oss_ioctl_sequencer(p, &ap, retval);
    141 	case 'P':
    142         	freebsd_to_oss(uap, &ap);
    143 		return oss_ioctl_audio(p, &ap, retval);
    144 	case 'i':
    145 		freebsd_to_netbsd_ifioctl(uap, &nap);
    146 		return sys_ioctl(p, &nap, retval);
    147 	default:
    148 		return sys_ioctl(p, uap, retval);
    149 	}
    150 }
    151