ocryptodev.c revision 1.11
1/* $NetBSD: ocryptodev.c,v 1.11 2017/07/28 17:14:04 riastradh Exp $ */ 2/* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */ 3/* $OpenBSD: cryptodev.c,v 1.53 2002/07/10 22:21:30 mickey Exp $ */ 4 5/*- 6 * Copyright (c) 2008 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Coyote Point Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34/* 35 * Copyright (c) 2001 Theo de Raadt 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * Effort sponsored in part by the Defense Advanced Research Projects 61 * Agency (DARPA) and Air Force Research Laboratory, Air Force 62 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 63 * 64 */ 65 66/* 67 * Implement backward compatibility IOCTLs in this module. 68 * 69 */ 70 71#include <sys/cdefs.h> 72__KERNEL_RCSID(0, "$NetBSD: ocryptodev.c,v 1.11 2017/07/28 17:14:04 riastradh Exp $"); 73 74#include <sys/param.h> 75#include <sys/systm.h> 76#include <sys/kmem.h> 77#include <sys/malloc.h> 78#include <sys/mbuf.h> 79#include <sys/pool.h> 80#include <sys/sysctl.h> 81#include <sys/file.h> 82#include <sys/filedesc.h> 83#include <sys/errno.h> 84#include <sys/md5.h> 85#include <sys/sha1.h> 86#include <sys/conf.h> 87#include <sys/device.h> 88#include <sys/kauth.h> 89#include <sys/select.h> 90#include <sys/poll.h> 91#include <sys/atomic.h> 92 93#ifdef _KERNEL_OPT 94#include "opt_ocf.h" 95#endif 96 97#include <opencrypto/cryptodev.h> 98#include <opencrypto/cryptodev_internal.h> 99#include <opencrypto/ocryptodev.h> 100#include <opencrypto/xform.h> 101 102static int ocryptodev_op(struct csession *, struct ocrypt_op *, 103 struct lwp *); 104static int ocryptodev_mop(struct fcrypt *, struct ocrypt_n_op *, int, 105 struct lwp *); 106static int ocryptodev_session(struct fcrypt *, struct osession_op *); 107static int ocryptodev_msession(struct fcrypt *, struct osession_n_op *, int); 108 109int 110ocryptof_ioctl(struct file *fp, u_long cmd, void *data) 111{ 112 struct fcrypt *fcr = fp->f_fcrypt; 113 struct csession *cse; 114 struct osession_op *osop; 115 struct osession_n_op *osnop; 116 struct ocrypt_op *ocop; 117 struct ocrypt_mop *omop; 118 struct ocrypt_n_op *ocnop; 119 struct ocrypt_sgop *osgop; 120 121 int error = 0; 122 123 switch (cmd) { 124 case OCIOCGSESSION: 125 osop = (struct osession_op *)data; 126 error = ocryptodev_session(fcr, osop); 127 break; 128 case CIOCNGSESSION: 129 osgop = (struct ocrypt_sgop *)data; 130 if ((osgop->count <= 0) || 131 (SIZE_MAX/sizeof(struct osession_n_op) < osgop->count)) { 132 error = EINVAL; 133 break; 134 } 135 osnop = kmem_alloc((osgop->count * 136 sizeof(struct osession_n_op)), KM_SLEEP); 137 error = copyin(osgop->sessions, osnop, osgop->count * 138 sizeof(struct osession_n_op)); 139 if (error) { 140 goto mbail; 141 } 142 143 error = ocryptodev_msession(fcr, osnop, osgop->count); 144 if (error) { 145 goto mbail; 146 } 147 148 error = copyout(osnop, osgop->sessions, osgop->count * 149 sizeof(struct osession_n_op)); 150mbail: 151 kmem_free(osnop, osgop->count * sizeof(struct osession_n_op)); 152 break; 153 case OCIOCCRYPT: 154 mutex_enter(&cryptodev_mtx); 155 ocop = (struct ocrypt_op *)data; 156 cse = cryptodev_csefind(fcr, ocop->ses); 157 mutex_exit(&cryptodev_mtx); 158 if (cse == NULL) { 159 DPRINTF("csefind failed\n"); 160 return EINVAL; 161 } 162 error = ocryptodev_op(cse, ocop, curlwp); 163 DPRINTF("ocryptodev_op error = %d\n", error); 164 break; 165 case OCIOCNCRYPTM: 166 omop = (struct ocrypt_mop *)data; 167 if ((omop->count <= 0) || 168 (SIZE_MAX/sizeof(struct ocrypt_n_op) <= omop->count)) { 169 error = EINVAL; 170 break; 171 } 172 ocnop = kmem_alloc((omop->count * sizeof(struct ocrypt_n_op)), 173 KM_SLEEP); 174 error = copyin(omop->reqs, ocnop, 175 (omop->count * sizeof(struct ocrypt_n_op))); 176 if(!error) { 177 error = ocryptodev_mop(fcr, ocnop, omop->count, curlwp); 178 if (!error) { 179 error = copyout(ocnop, omop->reqs, 180 (omop->count * sizeof(struct ocrypt_n_op))); 181 } 182 } 183 kmem_free(ocnop, (omop->count * sizeof(struct ocrypt_n_op))); 184 break; 185 default: 186 DPRINTF("invalid ioctl cmd 0x%lx\n", cmd); 187 return EINVAL; 188 } 189 return error; 190} 191 192 193static int 194ocryptodev_op(struct csession *cse, struct ocrypt_op *ocop, struct lwp *l) 195{ 196 struct crypt_op cop; 197 198 cop.ses = ocop->ses; 199 cop.op = ocop->op; 200 cop.flags = ocop->flags; 201 cop.len = ocop->len; 202 cop.src = ocop->src; 203 cop.dst = ocop->dst; 204 cop.mac = ocop->mac; 205 cop.iv = ocop->iv; 206 cop.dst_len = 0; 207 208 return cryptodev_op(cse, &cop, l); 209}; 210 211static int 212ocryptodev_mop(struct fcrypt *fcr, 213 struct ocrypt_n_op *ocnop, 214 int count, struct lwp *l) 215{ 216 int res; 217 218 struct crypt_n_op cnop; 219 220 cnop.ses = ocnop->ses; 221 cnop.op = ocnop->op; 222 cnop.flags = ocnop->flags; 223 cnop.len = ocnop->len; 224 cnop.reqid = ocnop->reqid; 225 cnop.status = ocnop->status; 226 cnop.opaque = ocnop->opaque; 227 cnop.keylen = ocnop->keylen; 228 cnop.key = ocnop->key; 229 cnop.mackeylen = ocnop->mackeylen; 230 cnop.mackey = ocnop->mackey; 231 cnop.src = ocnop->src; 232 cnop.dst = ocnop->dst; 233 cnop.mac = ocnop->mac; 234 cnop.iv = ocnop->iv; 235 cnop.dst_len = 0; 236 res = cryptodev_mop(fcr, &cnop, count, l); 237 ocnop->reqid = cnop.reqid; 238 ocnop->status = cnop.status; 239 240 return res; 241}; 242 243 244static int 245ocryptodev_session(struct fcrypt *fcr, struct osession_op *osop) 246{ 247 struct session_op sop; 248 int res; 249 250 sop.cipher = osop->cipher; 251 sop.mac = osop->mac; 252 sop.comp_alg = 0; 253 sop.keylen = osop->keylen; 254 sop.key = osop->key; 255 sop.mackeylen = osop->mackeylen; 256 sop.mackey = osop->mackey; 257 res = cryptodev_session(fcr, &sop); 258 if (res) 259 return res; 260 osop->ses = sop.ses; 261 return 0; 262 263} 264 265static int 266ocryptodev_msession(struct fcrypt *fcr, struct osession_n_op *osn_ops, 267 int count) 268{ 269 int i; 270 271 for (i = 0; i < count; i++, osn_ops++) { 272 struct osession_op os_op; 273 os_op.cipher = osn_ops->cipher; 274 os_op.mac = osn_ops->mac; 275 os_op.keylen = osn_ops->keylen; 276 os_op.key = osn_ops->key; 277 os_op.mackeylen = osn_ops->mackeylen; 278 os_op.mackey = osn_ops->mackey; 279 280 osn_ops->status = ocryptodev_session(fcr, &os_op); 281 osn_ops->ses = os_op.ses; 282 } 283 284 return 0; 285} 286