1/* $NetBSD: rndpseudo_50.c,v 1.2 2012/08/03 07:51:21 matt Exp $ */
2
3/*-
4 * Copyright (c) 1997-2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Michael Graff <explorer@flame.org> and Thor Lancelot Simon.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: rndpseudo_50.c,v 1.2 2012/08/03 07:51:21 matt Exp $");
34
35#if defined(_KERNEL_OPT)
36#include "opt_compat_netbsd.h"
37#include "opt_compat_netbsd32.h"
38#endif
39
40#include <sys/param.h>
41#include <sys/file.h>
42
43#include <sys/rnd.h>
44#include <compat/sys/rnd.h>
45
46/*
47 * Convert from rndsource_t to rndsource50_t, for the results from
48 * RNDGETNUM50 and RNDGETNAME50.
49 */
50static void
51rndsource_to_rndsource50(rndsource_t *r, rndsource50_t *r50)
52{
53 memset(r50, 0, sizeof(*r50));
54 strlcpy(r50->name, r->name, sizeof(r50->name));
55 r50->total = r->total;
56 r50->type = r->type;
57 r50->flags = r->flags;
58}
59
60#if defined(COMPAT_NETBSD32) && defined(_LP64)
61/*
62 * Convert from rndsource_t to rndsource50_32_t, for the results from
63 * RNDGETNUM50_32 and RNDGETNAME50_32.
64 */
65static void
66rndsource_to_rndsource50_32(rndsource_t *r, rndsource50_32_t *r50_32)
67{
68 memset(r50_32, 0, sizeof(*r50_32));
69 strlcpy(r50_32->name, r->name, sizeof(r50_32->name));
70 r50_32->total = r->total;
71 r50_32->type = r->type;
72 r50_32->flags = r->flags;
73}
74#endif /* COMPAT_NETBSD32 */
75
76/*
77 * COMPAT_50 handling for rnd_ioctl. This is called from rnd_ioctl.
78 *
79 * It also handles the case of (COMPAT_50 && COMPAT_NETBSD32).
80 */
81int
82compat_50_rnd_ioctl(struct file *fp, u_long cmd, void *addr)
83{
84 int ret = 0;
85
86 switch (cmd) {
87
88 case RNDGETSRCNUM50:
89 {
90 rndstat_t rstbuf = {.start = 0};
91 rndstat50_t *rst50 = (rndstat50_t *)addr;
92 int count;
93
94 if (rst50->count > RND_MAXSTATCOUNT50)
95 return EINVAL;
96
97 rstbuf.start = rst50->start;
98 rstbuf.count = rst50->count;
99
100 ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNUM, &rstbuf);
101 if (ret != 0)
102 return ret;
103
104 for (count = 0; count < rst50->count; count++) {
105 rndsource_to_rndsource50(&rstbuf.source[count],
106 &rst50->source[count]);
107 }
108 rst50->count = rstbuf.count;
109
110 break;
111 }
112
113#if defined(COMPAT_NETBSD32) && defined(_LP64)
114 case RNDGETSRCNUM50_32:
115 {
116 rndstat_t rstbuf = {.start = 0};
117 rndstat50_32_t *rst50_32 = (rndstat50_32_t *)addr;
118 int count;
119
120 if (rst50_32->count > RND_MAXSTATCOUNT50)
121 return (EINVAL);
122
123 rstbuf.start = rst50_32->start;
124 rstbuf.count = rst50_32->count;
125
126 ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNUM, &rstbuf);
127 if (ret != 0)
128 return ret;
129
130 for (count = 0; count < rst50_32->count; count++) {
131 rndsource_to_rndsource50_32(&rstbuf.source[count],
132 &rst50_32->source[count]);
133 }
134 rst50_32->count = rstbuf.count;
135
136 break;
137 }
138#endif /* COMPAT_NETBSD32 */
139
140 case RNDGETSRCNAME50:
141 {
142 rndstat_name_t rstnmbuf = {.name[0] = 0};
143 rndstat_name50_t *rstnm50;
144 rstnm50 = (rndstat_name50_t *)addr;
145
146 strlcpy(rstnmbuf.name, rstnm50->name, sizeof(rstnmbuf.name));
147
148 ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNAME, &rstnmbuf);
149 if (ret != 0)
150 return ret;
151
152 rndsource_to_rndsource50(&rstnmbuf.source, &rstnm50->source);
153
154 break;
155 }
156
157#if defined(COMPAT_NETBSD32) && defined(_LP64)
158 case RNDGETSRCNAME50_32:
159 {
160 rndstat_name_t rstnmbuf = {.name[0] = 0};
161 rndstat_name50_32_t *rstnm50_32;
162 rstnm50_32 = (rndstat_name50_32_t *)addr;
163
164 strlcpy(rstnmbuf.name, rstnm50_32->name, sizeof(rstnmbuf.name));
165
166 ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNAME, &rstnmbuf);
167 if (ret != 0)
168 return ret;
169
170 rndsource_to_rndsource50_32(&rstnmbuf.source,
171 &rstnm50_32->source);
172
173 break;
174 }
175#endif
176
177 default:
178 return ENOTTY;
179 }
180
181 return ret;
182}
183