1 /* $NetBSD: ccd_60.c,v 1.11 2019/12/12 02:15:42 pgoyette Exp $ */
2
3 /*-
4 * Copyright (c) 2018 The NetBSD Foundation, Inc.
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: ccd_60.c,v 1.11 2019/12/12 02:15:42 pgoyette Exp $");
30
31 #ifdef _KERNEL_OPT
32 #include "opt_compat_netbsd.h"
33 #endif
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/disk.h>
38 #include <sys/lwp.h>
39 #include <sys/compat_stub.h>
40
41 #include <dev/ccdvar.h>
42 #include <compat/sys/ccdvar.h>
43
44 /*
45 * Compat code must not be called if on a platform where
46 * sizeof (size_t) == sizeof (uint64_t) as CCDIOCSET will
47 * be the same as CCDIOCSET_60
48 */
49 static int
compat_60_ccdioctl(dev_t dev,u_long cmd,void * data,int flag,struct lwp * l,int (* f)(dev_t,u_long,void *,int,struct lwp *))50 compat_60_ccdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l,
51 int (*f)(dev_t, u_long, void *, int, struct lwp *))
52 {
53 switch (cmd) {
54 #ifdef CCDIOCSET_60
55 case CCDIOCSET_60: {
56 if (data == NULL)
57 return 0;
58
59 struct ccd_ioctl ccio;
60 struct ccd_ioctl_60 *ccio60 = data;
61
62 ccio.ccio_disks = ccio60->ccio_disks;
63 ccio.ccio_ndisks = ccio60->ccio_ndisks;
64 ccio.ccio_ileave = ccio60->ccio_ileave;
65 ccio.ccio_flags = ccio60->ccio_flags;
66 ccio.ccio_unit = ccio60->ccio_unit;
67 int error = (*f)(dev, CCDIOCSET, &ccio, flag, l);
68 if (!error) {
69 /* Copy data back, adjust types if necessary */
70 ccio60->ccio_disks = ccio.ccio_disks;
71 ccio60->ccio_ndisks = ccio.ccio_ndisks;
72 ccio60->ccio_ileave = ccio.ccio_ileave;
73 ccio60->ccio_flags = ccio.ccio_flags;
74 ccio60->ccio_unit = ccio.ccio_unit;
75 ccio60->ccio_size = (size_t)ccio.ccio_size;
76 }
77 return error;
78 }
79
80 case CCDIOCCLR_60:
81 if (data == NULL)
82 return ENOSYS;
83 /*
84 * ccio_size member not used, so existing struct OK
85 * drop through to existing non-compat version
86 */
87 return (*f)(dev, CCDIOCCLR, data, flag, l);
88 #endif
89 default:
90 return ENOSYS;
91 }
92 }
93
94 void
ccd_60_init(void)95 ccd_60_init(void)
96 {
97
98 MODULE_HOOK_SET(ccd_ioctl_60_hook, compat_60_ccdioctl);
99 }
100
101 void
ccd_60_fini(void)102 ccd_60_fini(void)
103 {
104
105 MODULE_HOOK_UNSET(ccd_ioctl_60_hook);
106 }
107