1 /* $NetBSD: freebsd_ioctl.c,v 1.15 2007/12/20 23:02:47 dsl 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/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: freebsd_ioctl.c,v 1.15 2007/12/20 23:02:47 dsl Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/proc.h>
40 #include <sys/mount.h>
41 #include <sys/sockio.h>
42
43 #include <sys/syscallargs.h>
44
45 #include <net/if.h>
46
47 #include <compat/sys/sockio.h>
48
49 #include <compat/freebsd/freebsd_syscallargs.h>
50 #include <compat/common/compat_util.h>
51 #include <compat/freebsd/freebsd_ioctl.h>
52
53 #include <compat/ossaudio/ossaudio.h>
54 #include <compat/ossaudio/ossaudiovar.h>
55
56 /* The FreeBSD and OSS(Linux) encodings of ioctl R/W differ. */
57 static void freebsd_to_oss(const struct freebsd_sys_ioctl_args *,
58 struct oss_sys_ioctl_args *);
59
60 static void
freebsd_to_oss(const struct freebsd_sys_ioctl_args * uap,struct oss_sys_ioctl_args * rap)61 freebsd_to_oss(const struct freebsd_sys_ioctl_args *uap, struct oss_sys_ioctl_args *rap)
62 {
63 u_long ocmd, ncmd;
64
65 ocmd = SCARG(uap, com);
66 ncmd = ocmd &~ FREEBSD_IOC_DIRMASK;
67 switch(ocmd & FREEBSD_IOC_DIRMASK) {
68 case FREEBSD_IOC_VOID: ncmd |= OSS_IOC_VOID; break;
69 case FREEBSD_IOC_OUT: ncmd |= OSS_IOC_OUT; break;
70 case FREEBSD_IOC_IN: ncmd |= OSS_IOC_IN; break;
71 case FREEBSD_IOC_INOUT: ncmd |= OSS_IOC_INOUT; break;
72 }
73 SCARG(rap, fd) = SCARG(uap, fd);
74 SCARG(rap, com) = ncmd;
75 SCARG(rap, data) = SCARG(uap, data);
76 }
77
78
79 static void freebsd_to_netbsd_ifioctl(const struct freebsd_sys_ioctl_args *uap,
80 struct sys_ioctl_args *nap);
81
82 static void
freebsd_to_netbsd_ifioctl(const struct freebsd_sys_ioctl_args * uap,struct sys_ioctl_args * nap)83 freebsd_to_netbsd_ifioctl(const struct freebsd_sys_ioctl_args *uap, struct sys_ioctl_args *nap)
84 {
85 u_long ocmd, ncmd;
86 ocmd = SCARG(uap, com);
87 switch (ocmd) {
88 case FREEBSD_SIOCALIFADDR:
89 ncmd =SIOCALIFADDR;
90 break;
91 case FREEBSD_SIOCGLIFADDR:
92 ncmd =SIOCGLIFADDR;
93 break;
94 case FREEBSD_SIOCDLIFADDR:
95 ncmd =SIOCDLIFADDR;
96 break;
97 case FREEBSD_SIOCGIFMTU:
98 ncmd = SIOCGIFMTU;
99 break;
100 case FREEBSD_SIOCSIFMTU:
101 ncmd = SIOCSIFMTU;
102 break;
103 default:
104 ncmd = ocmd;
105 break;
106 }
107 SCARG(nap, fd) = SCARG(uap, fd);
108 SCARG(nap, com) = ncmd;
109 SCARG(nap, data) = SCARG(uap, data);
110 }
111
112 int
freebsd_sys_ioctl(struct lwp * l,const struct freebsd_sys_ioctl_args * uap,register_t * retval)113 freebsd_sys_ioctl(struct lwp *l, const struct freebsd_sys_ioctl_args *uap, register_t *retval)
114 {
115 /* {
116 syscallarg(int) fd;
117 syscallarg(u_long) com;
118 syscallarg(void *) data;
119 } */
120 struct oss_sys_ioctl_args ap;
121 struct sys_ioctl_args nap;
122
123 /*
124 * XXX - <sys/cdio.h>'s incompatibility
125 * _IO('c', 25..27, *): incompatible
126 * _IO('c', 28... , *): not exist
127 */
128 /* XXX - <sys/mtio.h> */
129 /* XXX - <sys/scsiio.h> */
130 /* XXX - should convert machine dependent ioctl()s */
131
132 switch (FREEBSD_IOCGROUP(SCARG(uap, com))) {
133 case 'M':
134 freebsd_to_oss(uap, &ap);
135 return oss_ioctl_mixer(l, &ap, retval);
136 case 'Q':
137 freebsd_to_oss(uap, &ap);
138 return oss_ioctl_sequencer(l, &ap, retval);
139 case 'P':
140 freebsd_to_oss(uap, &ap);
141 return oss_ioctl_audio(l, &ap, retval);
142 case 'i':
143 freebsd_to_netbsd_ifioctl(uap, &nap);
144 return sys_ioctl(l, &nap, retval);
145 default:
146 return sys_ioctl(l, (const void *)uap, retval);
147 }
148 }
149