1 /* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */ 2 /* $DragonFly: src/sys/opencrypto/cryptodev.c,v 1.11 2005/07/13 01:38:52 dillon Exp $ */ 3 /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */ 4 5 /* 6 * Copyright (c) 2001 Theo de Raadt 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * Effort sponsored in part by the Defense Advanced Research Projects 32 * Agency (DARPA) and Air Force Research Laboratory, Air Force 33 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 34 * 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/malloc.h> 40 #include <sys/mbuf.h> 41 #include <sys/sysctl.h> 42 #include <sys/file.h> 43 #include <sys/filedesc.h> 44 #include <sys/errno.h> 45 #include <sys/uio.h> 46 #include <sys/random.h> 47 #include <sys/conf.h> 48 #include <sys/kernel.h> 49 #include <sys/fcntl.h> 50 #include <sys/proc.h> 51 #include <sys/file2.h> 52 #include <sys/thread2.h> 53 54 #include <opencrypto/cryptodev.h> 55 #include <opencrypto/xform.h> 56 57 struct csession { 58 TAILQ_ENTRY(csession) next; 59 u_int64_t sid; 60 u_int32_t ses; 61 62 u_int32_t cipher; 63 struct enc_xform *txform; 64 u_int32_t mac; 65 struct auth_hash *thash; 66 67 caddr_t key; 68 int keylen; 69 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 70 71 caddr_t mackey; 72 int mackeylen; 73 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 74 75 struct iovec iovec[UIO_MAXIOV]; 76 struct uio uio; 77 int error; 78 }; 79 80 struct fcrypt { 81 TAILQ_HEAD(csessionlist, csession) csessions; 82 int sesn; 83 }; 84 85 static int cryptof_rw(struct file *fp, struct uio *uio, 86 struct ucred *cred, int flags, struct thread *); 87 static int cryptof_ioctl(struct file *, u_long, caddr_t, struct thread *); 88 static int cryptof_poll(struct file *, int, struct ucred *, struct thread *); 89 static int cryptof_kqfilter(struct file *, struct knote *); 90 static int cryptof_stat(struct file *, struct stat *, struct thread *); 91 static int cryptof_close(struct file *, struct thread *); 92 93 static struct fileops cryptofops = { 94 NULL, /* port */ 95 NULL, /* clone */ 96 cryptof_rw, 97 cryptof_rw, 98 cryptof_ioctl, 99 cryptof_poll, 100 cryptof_kqfilter, 101 cryptof_stat, 102 cryptof_close, 103 nofo_shutdown 104 }; 105 106 static struct csession *csefind(struct fcrypt *, u_int); 107 static int csedelete(struct fcrypt *, struct csession *); 108 static struct csession *cseadd(struct fcrypt *, struct csession *); 109 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t, 110 u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *, 111 struct auth_hash *); 112 static int csefree(struct csession *); 113 114 static int cryptodev_op(struct csession *, struct crypt_op *, 115 struct thread *td); 116 static int cryptodev_key(struct crypt_kop *); 117 118 static int 119 cryptof_rw( 120 struct file *fp, 121 struct uio *uio, 122 struct ucred *active_cred, 123 int flags, 124 struct thread *td) 125 { 126 127 return (EIO); 128 } 129 130 /* ARGSUSED */ 131 static int 132 cryptof_ioctl( 133 struct file *fp, 134 u_long cmd, 135 caddr_t data, 136 struct thread *td) 137 { 138 struct cryptoini cria, crie; 139 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 140 struct csession *cse; 141 struct session_op *sop; 142 struct crypt_op *cop; 143 struct enc_xform *txform = NULL; 144 struct auth_hash *thash = NULL; 145 u_int64_t sid; 146 u_int32_t ses; 147 int error = 0; 148 149 switch (cmd) { 150 case CIOCGSESSION: 151 sop = (struct session_op *)data; 152 switch (sop->cipher) { 153 case 0: 154 break; 155 case CRYPTO_DES_CBC: 156 txform = &enc_xform_des; 157 break; 158 case CRYPTO_3DES_CBC: 159 txform = &enc_xform_3des; 160 break; 161 case CRYPTO_BLF_CBC: 162 txform = &enc_xform_blf; 163 break; 164 case CRYPTO_CAST_CBC: 165 txform = &enc_xform_cast5; 166 break; 167 case CRYPTO_SKIPJACK_CBC: 168 txform = &enc_xform_skipjack; 169 break; 170 case CRYPTO_AES_CBC: 171 txform = &enc_xform_rijndael128; 172 break; 173 case CRYPTO_NULL_CBC: 174 txform = &enc_xform_null; 175 break; 176 case CRYPTO_ARC4: 177 txform = &enc_xform_arc4; 178 break; 179 default: 180 return (EINVAL); 181 } 182 183 switch (sop->mac) { 184 case 0: 185 break; 186 case CRYPTO_MD5_HMAC: 187 thash = &auth_hash_hmac_md5_96; 188 break; 189 case CRYPTO_SHA1_HMAC: 190 thash = &auth_hash_hmac_sha1_96; 191 break; 192 case CRYPTO_SHA2_HMAC: 193 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) 194 thash = &auth_hash_hmac_sha2_256; 195 else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) 196 thash = &auth_hash_hmac_sha2_384; 197 else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) 198 thash = &auth_hash_hmac_sha2_512; 199 else 200 return (EINVAL); 201 break; 202 case CRYPTO_RIPEMD160_HMAC: 203 thash = &auth_hash_hmac_ripemd_160_96; 204 break; 205 #ifdef notdef 206 case CRYPTO_MD5: 207 thash = &auth_hash_md5; 208 break; 209 case CRYPTO_SHA1: 210 thash = &auth_hash_sha1; 211 break; 212 #endif 213 case CRYPTO_NULL_HMAC: 214 thash = &auth_hash_null; 215 break; 216 default: 217 return (EINVAL); 218 } 219 220 bzero(&crie, sizeof(crie)); 221 bzero(&cria, sizeof(cria)); 222 223 if (txform) { 224 crie.cri_alg = txform->type; 225 crie.cri_klen = sop->keylen * 8; 226 if (sop->keylen > txform->maxkey || 227 sop->keylen < txform->minkey) { 228 error = EINVAL; 229 goto bail; 230 } 231 232 MALLOC(crie.cri_key, u_int8_t *, 233 crie.cri_klen / 8, M_XDATA, M_WAITOK); 234 if ((error = copyin(sop->key, crie.cri_key, 235 crie.cri_klen / 8))) 236 goto bail; 237 if (thash) 238 crie.cri_next = &cria; 239 } 240 241 if (thash) { 242 cria.cri_alg = thash->type; 243 cria.cri_klen = sop->mackeylen * 8; 244 if (sop->mackeylen != thash->keysize) { 245 error = EINVAL; 246 goto bail; 247 } 248 249 if (cria.cri_klen) { 250 MALLOC(cria.cri_key, u_int8_t *, 251 cria.cri_klen / 8, M_XDATA, M_WAITOK); 252 if ((error = copyin(sop->mackey, cria.cri_key, 253 cria.cri_klen / 8))) 254 goto bail; 255 } 256 } 257 258 error = crypto_newsession(&sid, (txform ? &crie : &cria), 1); 259 if (error) 260 goto bail; 261 262 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 263 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform, 264 thash); 265 266 if (cse == NULL) { 267 crypto_freesession(sid); 268 error = EINVAL; 269 goto bail; 270 } 271 sop->ses = cse->ses; 272 273 bail: 274 if (error) { 275 if (crie.cri_key) 276 FREE(crie.cri_key, M_XDATA); 277 if (cria.cri_key) 278 FREE(cria.cri_key, M_XDATA); 279 } 280 break; 281 case CIOCFSESSION: 282 ses = *(u_int32_t *)data; 283 cse = csefind(fcr, ses); 284 if (cse == NULL) 285 return (EINVAL); 286 csedelete(fcr, cse); 287 error = csefree(cse); 288 break; 289 case CIOCCRYPT: 290 cop = (struct crypt_op *)data; 291 cse = csefind(fcr, cop->ses); 292 if (cse == NULL) 293 return (EINVAL); 294 error = cryptodev_op(cse, cop, td); 295 break; 296 case CIOCKEY: 297 error = cryptodev_key((struct crypt_kop *)data); 298 break; 299 case CIOCASYMFEAT: 300 error = crypto_getfeat((int *)data); 301 break; 302 default: 303 error = EINVAL; 304 } 305 return (error); 306 } 307 308 static int cryptodev_cb(void *); 309 310 311 static int 312 cryptodev_op( 313 struct csession *cse, 314 struct crypt_op *cop, 315 struct thread *td) 316 { 317 struct cryptop *crp = NULL; 318 struct cryptodesc *crde = NULL, *crda = NULL; 319 int i, error; 320 321 if (cop->len > 256*1024-4) 322 return (E2BIG); 323 324 if (cse->txform && (cop->len % cse->txform->blocksize) != 0) 325 return (EINVAL); 326 327 bzero(&cse->uio, sizeof(cse->uio)); 328 cse->uio.uio_iovcnt = 1; 329 cse->uio.uio_resid = 0; 330 cse->uio.uio_segflg = UIO_SYSSPACE; 331 cse->uio.uio_rw = UIO_WRITE; 332 cse->uio.uio_td = td; 333 cse->uio.uio_iov = cse->iovec; 334 bzero(&cse->iovec, sizeof(cse->iovec)); 335 cse->uio.uio_iov[0].iov_len = cop->len; 336 cse->uio.uio_iov[0].iov_base = malloc(cop->len, M_XDATA, M_WAITOK); 337 for (i = 0; i < cse->uio.uio_iovcnt; i++) 338 cse->uio.uio_resid += cse->uio.uio_iov[0].iov_len; 339 340 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL)); 341 if (crp == NULL) { 342 error = ENOMEM; 343 goto bail; 344 } 345 346 if (cse->thash) { 347 crda = crp->crp_desc; 348 if (cse->txform) 349 crde = crda->crd_next; 350 } else { 351 if (cse->txform) 352 crde = crp->crp_desc; 353 else { 354 error = EINVAL; 355 goto bail; 356 } 357 } 358 359 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 360 goto bail; 361 362 if (crda) { 363 crda->crd_skip = 0; 364 crda->crd_len = cop->len; 365 crda->crd_inject = 0; /* ??? */ 366 367 crda->crd_alg = cse->mac; 368 crda->crd_key = cse->mackey; 369 crda->crd_klen = cse->mackeylen * 8; 370 } 371 372 if (crde) { 373 if (cop->op == COP_ENCRYPT) 374 crde->crd_flags |= CRD_F_ENCRYPT; 375 else 376 crde->crd_flags &= ~CRD_F_ENCRYPT; 377 crde->crd_len = cop->len; 378 crde->crd_inject = 0; 379 380 crde->crd_alg = cse->cipher; 381 crde->crd_key = cse->key; 382 crde->crd_klen = cse->keylen * 8; 383 } 384 385 crp->crp_ilen = cop->len; 386 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM 387 | (cop->flags & COP_F_BATCH); 388 crp->crp_buf = (caddr_t)&cse->uio; 389 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 390 crp->crp_sid = cse->sid; 391 crp->crp_opaque = (void *)cse; 392 393 if (cop->iv) { 394 if (crde == NULL) { 395 error = EINVAL; 396 goto bail; 397 } 398 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 399 error = EINVAL; 400 goto bail; 401 } 402 if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize))) 403 goto bail; 404 bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize); 405 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 406 crde->crd_skip = 0; 407 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 408 crde->crd_skip = 0; 409 } else if (crde) { 410 crde->crd_flags |= CRD_F_IV_PRESENT; 411 crde->crd_skip = cse->txform->blocksize; 412 crde->crd_len -= cse->txform->blocksize; 413 } 414 415 if (cop->mac) { 416 if (crda == NULL) { 417 error = EINVAL; 418 goto bail; 419 } 420 crp->crp_mac=cse->tmp_mac; 421 } 422 423 crit_enter(); 424 error = crypto_dispatch(crp); 425 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0) 426 error = tsleep(crp, 0, "crydev", 0); 427 crit_exit(); 428 if (error) 429 goto bail; 430 431 if (crp->crp_etype != 0) { 432 error = crp->crp_etype; 433 goto bail; 434 } 435 436 if (cse->error) { 437 error = cse->error; 438 goto bail; 439 } 440 441 if (cop->dst && 442 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len))) 443 goto bail; 444 445 if (cop->mac && 446 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) 447 goto bail; 448 449 bail: 450 if (crp) 451 crypto_freereq(crp); 452 if (cse->uio.uio_iov[0].iov_base) 453 free(cse->uio.uio_iov[0].iov_base, M_XDATA); 454 455 return (error); 456 } 457 458 static int 459 cryptodev_cb(void *op) 460 { 461 struct cryptop *crp = (struct cryptop *) op; 462 struct csession *cse = (struct csession *)crp->crp_opaque; 463 464 cse->error = crp->crp_etype; 465 if (crp->crp_etype == EAGAIN) 466 return crypto_dispatch(crp); 467 wakeup_one(crp); 468 return (0); 469 } 470 471 static int 472 cryptodevkey_cb(void *op) 473 { 474 struct cryptkop *krp = (struct cryptkop *) op; 475 476 wakeup_one(krp); 477 return (0); 478 } 479 480 static int 481 cryptodev_key(struct crypt_kop *kop) 482 { 483 struct cryptkop *krp = NULL; 484 int error = EINVAL; 485 int in, out, size, i; 486 487 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) { 488 return (EFBIG); 489 } 490 491 in = kop->crk_iparams; 492 out = kop->crk_oparams; 493 switch (kop->crk_op) { 494 case CRK_MOD_EXP: 495 if (in == 3 && out == 1) 496 break; 497 return (EINVAL); 498 case CRK_MOD_EXP_CRT: 499 if (in == 6 && out == 1) 500 break; 501 return (EINVAL); 502 case CRK_DSA_SIGN: 503 if (in == 5 && out == 2) 504 break; 505 return (EINVAL); 506 case CRK_DSA_VERIFY: 507 if (in == 7 && out == 0) 508 break; 509 return (EINVAL); 510 case CRK_DH_COMPUTE_KEY: 511 if (in == 3 && out == 1) 512 break; 513 return (EINVAL); 514 default: 515 return (EINVAL); 516 } 517 518 krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK); 519 if (!krp) 520 return (ENOMEM); 521 bzero(krp, sizeof *krp); 522 krp->krp_op = kop->crk_op; 523 krp->krp_status = kop->crk_status; 524 krp->krp_iparams = kop->crk_iparams; 525 krp->krp_oparams = kop->crk_oparams; 526 krp->krp_status = 0; 527 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 528 529 for (i = 0; i < CRK_MAXPARAM; i++) 530 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 531 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 532 size = (krp->krp_param[i].crp_nbits + 7) / 8; 533 if (size == 0) 534 continue; 535 MALLOC(krp->krp_param[i].crp_p, caddr_t, size, M_XDATA, M_WAITOK); 536 if (i >= krp->krp_iparams) 537 continue; 538 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size); 539 if (error) 540 goto fail; 541 } 542 543 error = crypto_kdispatch(krp); 544 if (error == 0) 545 error = tsleep(krp, 0, "crydev", 0); 546 if (error) 547 goto fail; 548 549 if (krp->krp_status != 0) { 550 error = krp->krp_status; 551 goto fail; 552 } 553 554 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) { 555 size = (krp->krp_param[i].crp_nbits + 7) / 8; 556 if (size == 0) 557 continue; 558 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size); 559 if (error) 560 goto fail; 561 } 562 563 fail: 564 if (krp) { 565 kop->crk_status = krp->krp_status; 566 for (i = 0; i < CRK_MAXPARAM; i++) { 567 if (krp->krp_param[i].crp_p) 568 FREE(krp->krp_param[i].crp_p, M_XDATA); 569 } 570 free(krp, M_XDATA); 571 } 572 return (error); 573 } 574 575 /* ARGSUSED */ 576 static int 577 cryptof_poll( 578 struct file *fp, 579 int events, 580 struct ucred *active_cred, 581 struct thread *td) 582 { 583 584 return (0); 585 } 586 587 /* ARGSUSED */ 588 static int 589 cryptof_kqfilter(struct file *fp, struct knote *kn) 590 { 591 592 return (0); 593 } 594 595 /* ARGSUSED */ 596 static int 597 cryptof_stat( 598 struct file *fp, 599 struct stat *sb, 600 struct thread *td) 601 { 602 603 return (EOPNOTSUPP); 604 } 605 606 /* ARGSUSED */ 607 static int 608 cryptof_close(struct file *fp, struct thread *td) 609 { 610 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 611 struct csession *cse; 612 613 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 614 TAILQ_REMOVE(&fcr->csessions, cse, next); 615 (void)csefree(cse); 616 } 617 FREE(fcr, M_XDATA); 618 fp->f_data = NULL; 619 return 0; 620 } 621 622 static struct csession * 623 csefind(struct fcrypt *fcr, u_int ses) 624 { 625 struct csession *cse; 626 627 TAILQ_FOREACH(cse, &fcr->csessions, next) 628 if (cse->ses == ses) 629 return (cse); 630 return (NULL); 631 } 632 633 static int 634 csedelete(struct fcrypt *fcr, struct csession *cse_del) 635 { 636 struct csession *cse; 637 638 TAILQ_FOREACH(cse, &fcr->csessions, next) { 639 if (cse == cse_del) { 640 TAILQ_REMOVE(&fcr->csessions, cse, next); 641 return (1); 642 } 643 } 644 return (0); 645 } 646 647 static struct csession * 648 cseadd(struct fcrypt *fcr, struct csession *cse) 649 { 650 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 651 cse->ses = fcr->sesn++; 652 return (cse); 653 } 654 655 struct csession * 656 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen, 657 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 658 struct enc_xform *txform, struct auth_hash *thash) 659 { 660 struct csession *cse; 661 662 MALLOC(cse, struct csession *, sizeof(struct csession), 663 M_XDATA, M_NOWAIT); 664 if (cse == NULL) 665 return NULL; 666 cse->key = key; 667 cse->keylen = keylen/8; 668 cse->mackey = mackey; 669 cse->mackeylen = mackeylen/8; 670 cse->sid = sid; 671 cse->cipher = cipher; 672 cse->mac = mac; 673 cse->txform = txform; 674 cse->thash = thash; 675 cseadd(fcr, cse); 676 return (cse); 677 } 678 679 static int 680 csefree(struct csession *cse) 681 { 682 int error; 683 684 error = crypto_freesession(cse->sid); 685 if (cse->key) 686 FREE(cse->key, M_XDATA); 687 if (cse->mackey) 688 FREE(cse->mackey, M_XDATA); 689 FREE(cse, M_XDATA); 690 return (error); 691 } 692 693 static int 694 cryptoopen(dev_t dev, int oflags, int devtype, struct thread *td) 695 { 696 if (crypto_usercrypto == 0) 697 return (ENXIO); 698 return (0); 699 } 700 701 static int 702 cryptoread(dev_t dev, struct uio *uio, int ioflag) 703 { 704 return (EIO); 705 } 706 707 static int 708 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 709 { 710 return (EIO); 711 } 712 713 static int 714 cryptoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 715 { 716 struct file *f; 717 struct fcrypt *fcr; 718 int fd, error; 719 switch (cmd) { 720 case CRIOGET: 721 MALLOC(fcr, struct fcrypt *, 722 sizeof(struct fcrypt), M_XDATA, M_WAITOK); 723 TAILQ_INIT(&fcr->csessions); 724 fcr->sesn = 0; 725 726 KKASSERT(td->td_proc); 727 error = falloc(td->td_proc, &f, &fd); 728 729 if (error) { 730 FREE(fcr, M_XDATA); 731 return (error); 732 } 733 f->f_flag = FREAD | FWRITE; 734 f->f_type = DTYPE_CRYPTO; 735 f->f_ops = &cryptofops; 736 f->f_data = (caddr_t) fcr; 737 *(u_int32_t *)data = fd; 738 fdrop(f, td); 739 break; 740 default: 741 error = EINVAL; 742 break; 743 } 744 return (error); 745 } 746 747 #define CRYPTO_MAJOR 70 /* from openbsd */ 748 static struct cdevsw crypto_cdevsw = { 749 /* dev name */ "crypto", 750 /* dev major */ CRYPTO_MAJOR, 751 /* flags */ 0, 752 /* port */ NULL, 753 /* clone */ NULL, 754 755 /* open */ cryptoopen, 756 /* close */ nullclose, 757 /* read */ cryptoread, 758 /* write */ cryptowrite, 759 /* ioctl */ cryptoioctl, 760 /* poll */ nopoll, 761 /* mmap */ nommap, 762 /* strategy */ nostrategy, 763 /* dump */ nodump, 764 /* psize */ nopsize, 765 /* kqfilter */ NULL 766 }; 767 768 /* 769 * Initialization code, both for static and dynamic loading. 770 */ 771 static int 772 cryptodev_modevent(module_t mod, int type, void *unused) 773 { 774 switch (type) { 775 case MOD_LOAD: 776 if (bootverbose) 777 printf("crypto: <crypto device>\n"); 778 cdevsw_add(&crypto_cdevsw, 0, 0); 779 make_dev(&crypto_cdevsw, 0, UID_ROOT, GID_WHEEL, 780 0666, "crypto"); 781 return 0; 782 case MOD_UNLOAD: 783 /*XXX disallow if active sessions */ 784 cdevsw_remove(&crypto_cdevsw, 0, 0); 785 return 0; 786 } 787 return EINVAL; 788 } 789 790 static moduledata_t cryptodev_mod = { 791 "cryptodev", 792 cryptodev_modevent, 793 0 794 }; 795 MODULE_VERSION(cryptodev, 1); 796 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 797 #if 0 798 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1); 799 #endif 800