| 1 | /* $NetBSD: ocryptodev.c,v 1.6 2014/09/05 09:23:40 matt 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 1.6 2014/09/05 09:23:40 matt 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 | |
| 102 | static int ocryptodev_op(struct csession *, struct ocrypt_op *, |
| 103 | struct lwp *); |
| 104 | static int ocryptodev_mop(struct fcrypt *, struct ocrypt_n_op *, int, |
| 105 | struct lwp *); |
| 106 | static int ocryptodev_session(struct fcrypt *, struct osession_op *); |
| 107 | static int ocryptodev_msession(struct fcrypt *, struct osession_n_op *, int); |
| 108 | |
| 109 | int |
| 110 | ocryptof_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 | osnop = kmem_alloc((osgop->count * |
| 131 | sizeof(struct osession_n_op)), KM_SLEEP); |
| 132 | error = copyin(osgop->sessions, osnop, osgop->count * |
| 133 | sizeof(struct osession_n_op)); |
| 134 | if (error) { |
| 135 | goto mbail; |
| 136 | } |
| 137 | |
| 138 | error = ocryptodev_msession(fcr, osnop, osgop->count); |
| 139 | if (error) { |
| 140 | goto mbail; |
| 141 | } |
| 142 | |
| 143 | error = copyout(osnop, osgop->sessions, osgop->count * |
| 144 | sizeof(struct osession_n_op)); |
| 145 | mbail: |
| 146 | kmem_free(osnop, osgop->count * sizeof(struct osession_n_op)); |
| 147 | break; |
| 148 | case OCIOCCRYPT: |
| 149 | mutex_enter(&crypto_mtx); |
| 150 | ocop = (struct ocrypt_op *)data; |
| 151 | cse = cryptodev_csefind(fcr, ocop->ses); |
| 152 | mutex_exit(&crypto_mtx); |
| 153 | if (cse == NULL) { |
| 154 | DPRINTF(("csefind failed\n" )); |
| 155 | return EINVAL; |
| 156 | } |
| 157 | error = ocryptodev_op(cse, ocop, curlwp); |
| 158 | DPRINTF(("ocryptodev_op error = %d\n" , error)); |
| 159 | break; |
| 160 | case OCIOCNCRYPTM: |
| 161 | omop = (struct ocrypt_mop *)data; |
| 162 | ocnop = kmem_alloc((omop->count * sizeof(struct ocrypt_n_op)), |
| 163 | KM_SLEEP); |
| 164 | error = copyin(omop->reqs, ocnop, |
| 165 | (omop->count * sizeof(struct ocrypt_n_op))); |
| 166 | if(!error) { |
| 167 | error = ocryptodev_mop(fcr, ocnop, omop->count, curlwp); |
| 168 | if (!error) { |
| 169 | error = copyout(ocnop, omop->reqs, |
| 170 | (omop->count * sizeof(struct ocrypt_n_op))); |
| 171 | } |
| 172 | } |
| 173 | kmem_free(ocnop, (omop->count * sizeof(struct ocrypt_n_op))); |
| 174 | break; |
| 175 | default: |
| 176 | DPRINTF(("invalid ioctl cmd 0x%lx\n" , cmd)); |
| 177 | return EINVAL; |
| 178 | } |
| 179 | return error; |
| 180 | } |
| 181 | |
| 182 | |
| 183 | static int |
| 184 | ocryptodev_op(struct csession *cse, struct ocrypt_op *ocop, struct lwp *l) |
| 185 | { |
| 186 | struct crypt_op cop; |
| 187 | |
| 188 | cop.ses = ocop->ses; |
| 189 | cop.op = ocop->op; |
| 190 | cop.flags = ocop->flags; |
| 191 | cop.len = ocop->len; |
| 192 | cop.src = ocop->src; |
| 193 | cop.dst = ocop->dst; |
| 194 | cop.mac = ocop->mac; |
| 195 | cop.iv = ocop->iv; |
| 196 | cop.dst_len = 0; |
| 197 | |
| 198 | return cryptodev_op(cse, &cop, l); |
| 199 | }; |
| 200 | |
| 201 | static int |
| 202 | ocryptodev_mop(struct fcrypt *fcr, |
| 203 | struct ocrypt_n_op *ocnop, |
| 204 | int count, struct lwp *l) |
| 205 | { |
| 206 | int res; |
| 207 | |
| 208 | struct crypt_n_op cnop; |
| 209 | |
| 210 | cnop.ses = ocnop->ses; |
| 211 | cnop.op = ocnop->op; |
| 212 | cnop.flags = ocnop->flags; |
| 213 | cnop.len = ocnop->len; |
| 214 | cnop.reqid = ocnop->reqid; |
| 215 | cnop.status = ocnop->status; |
| 216 | cnop.opaque = ocnop->opaque; |
| 217 | cnop.keylen = ocnop->keylen; |
| 218 | cnop.key = ocnop->key; |
| 219 | cnop.mackeylen = ocnop->mackeylen; |
| 220 | cnop.mackey = ocnop->mackey; |
| 221 | cnop.src = ocnop->src; |
| 222 | cnop.dst = ocnop->dst; |
| 223 | cnop.mac = ocnop->mac; |
| 224 | cnop.iv = ocnop->iv; |
| 225 | cnop.dst_len = 0; |
| 226 | res = cryptodev_mop(fcr, &cnop, count, l); |
| 227 | ocnop->reqid = cnop.reqid; |
| 228 | ocnop->status = cnop.status; |
| 229 | |
| 230 | return res; |
| 231 | }; |
| 232 | |
| 233 | |
| 234 | static int |
| 235 | ocryptodev_session(struct fcrypt *fcr, struct osession_op *osop) |
| 236 | { |
| 237 | struct session_op sop; |
| 238 | int res; |
| 239 | |
| 240 | sop.cipher = osop->cipher; |
| 241 | sop.mac = osop->mac; |
| 242 | sop.comp_alg = 0; |
| 243 | sop.keylen = osop->keylen; |
| 244 | sop.key = osop->key; |
| 245 | sop.mackeylen = osop->mackeylen; |
| 246 | sop.mackey = osop->mackey; |
| 247 | res = cryptodev_session(fcr, &sop); |
| 248 | osop->ses = sop.ses; |
| 249 | return res; |
| 250 | |
| 251 | } |
| 252 | |
| 253 | static int |
| 254 | ocryptodev_msession(struct fcrypt *fcr, struct osession_n_op *osn_ops, |
| 255 | int count) |
| 256 | { |
| 257 | int i; |
| 258 | |
| 259 | for (i = 0; i < count; i++, osn_ops++) { |
| 260 | struct osession_op os_op; |
| 261 | os_op.cipher = osn_ops->cipher; |
| 262 | os_op.mac = osn_ops->mac; |
| 263 | os_op.keylen = osn_ops->keylen; |
| 264 | os_op.key = osn_ops->key; |
| 265 | os_op.mackeylen = osn_ops->mackeylen; |
| 266 | os_op.mackey = osn_ops->mackey; |
| 267 | |
| 268 | osn_ops->status = ocryptodev_session(fcr, &os_op); |
| 269 | osn_ops->ses = os_op.ses; |
| 270 | } |
| 271 | |
| 272 | return 0; |
| 273 | } |
| 274 | |