| 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 | */ |
| 50 | static void |
| 51 | rndsource_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 | */ |
| 65 | static void |
| 66 | rndsource_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 | */ |
| 81 | int |
| 82 | compat_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 | |