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 1.23 2008/01/06 16:55:53 swildner 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/lock.h> 44 #include <sys/filedesc.h> 45 #include <sys/errno.h> 46 #include <sys/uio.h> 47 #include <sys/random.h> 48 #include <sys/conf.h> 49 #include <sys/device.h> 50 #include <sys/kernel.h> 51 #include <sys/fcntl.h> 52 #include <sys/proc.h> 53 #include <sys/file2.h> 54 #include <sys/thread2.h> 55 56 #include <opencrypto/cryptodev.h> 57 #include <opencrypto/xform.h> 58 59 struct csession { 60 TAILQ_ENTRY(csession) next; 61 u_int64_t sid; 62 u_int32_t ses; 63 64 u_int32_t cipher; 65 struct enc_xform *txform; 66 u_int32_t mac; 67 struct auth_hash *thash; 68 69 caddr_t key; 70 int keylen; 71 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 72 73 caddr_t mackey; 74 int mackeylen; 75 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 76 77 struct iovec iovec[UIO_MAXIOV]; 78 struct uio uio; 79 int error; 80 }; 81 82 struct fcrypt { 83 TAILQ_HEAD(csessionlist, csession) csessions; 84 int sesn; 85 }; 86 87 static int cryptof_rw(struct file *fp, struct uio *uio, 88 struct ucred *cred, int flags); 89 static int cryptof_ioctl(struct file *, u_long, caddr_t, 90 struct ucred *, struct sysmsg *); 91 static int cryptof_poll(struct file *, int, struct ucred *); 92 static int cryptof_kqfilter(struct file *, struct knote *); 93 static int cryptof_stat(struct file *, struct stat *, struct ucred *); 94 static int cryptof_close(struct file *); 95 96 static struct fileops cryptofops = { 97 .fo_read = cryptof_rw, 98 .fo_write = cryptof_rw, 99 .fo_ioctl = cryptof_ioctl, 100 .fo_poll = cryptof_poll, 101 .fo_kqfilter = cryptof_kqfilter, 102 .fo_stat = cryptof_stat, 103 .fo_close = cryptof_close, 104 .fo_shutdown = nofo_shutdown 105 }; 106 107 static struct csession *csefind(struct fcrypt *, u_int); 108 static int csedelete(struct fcrypt *, struct csession *); 109 static struct csession *cseadd(struct fcrypt *, struct csession *); 110 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t, 111 u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *, 112 struct auth_hash *); 113 static int csefree(struct csession *); 114 115 static int cryptodev_op(struct csession *, struct crypt_op *); 116 static int cryptodev_key(struct crypt_kop *); 117 118 /* 119 * MPSAFE 120 */ 121 static int 122 cryptof_rw( 123 struct file *fp, 124 struct uio *uio, 125 struct ucred *active_cred, 126 int flags) 127 { 128 return (EIO); 129 } 130 131 /* 132 * MPALMOSTSAFE - acquires mplock 133 */ 134 static int 135 cryptof_ioctl(struct file *fp, u_long cmd, caddr_t data, 136 struct ucred *cred, struct sysmsg *msg) 137 { 138 struct cryptoini cria, crie; 139 struct fcrypt *fcr; 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 get_mplock(); 150 fcr = (struct fcrypt *)fp->f_data; 151 152 switch (cmd) { 153 case CIOCGSESSION: 154 sop = (struct session_op *)data; 155 switch (sop->cipher) { 156 case 0: 157 break; 158 case CRYPTO_DES_CBC: 159 txform = &enc_xform_des; 160 break; 161 case CRYPTO_3DES_CBC: 162 txform = &enc_xform_3des; 163 break; 164 case CRYPTO_BLF_CBC: 165 txform = &enc_xform_blf; 166 break; 167 case CRYPTO_CAST_CBC: 168 txform = &enc_xform_cast5; 169 break; 170 case CRYPTO_SKIPJACK_CBC: 171 txform = &enc_xform_skipjack; 172 break; 173 case CRYPTO_AES_CBC: 174 txform = &enc_xform_rijndael128; 175 break; 176 case CRYPTO_NULL_CBC: 177 txform = &enc_xform_null; 178 break; 179 case CRYPTO_ARC4: 180 txform = &enc_xform_arc4; 181 break; 182 default: 183 error = EINVAL; 184 break; 185 } 186 if (error) 187 break; 188 189 switch (sop->mac) { 190 case 0: 191 break; 192 case CRYPTO_MD5_HMAC: 193 thash = &auth_hash_hmac_md5_96; 194 break; 195 case CRYPTO_SHA1_HMAC: 196 thash = &auth_hash_hmac_sha1_96; 197 break; 198 case CRYPTO_SHA2_HMAC: 199 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) 200 thash = &auth_hash_hmac_sha2_256; 201 else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) 202 thash = &auth_hash_hmac_sha2_384; 203 else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) 204 thash = &auth_hash_hmac_sha2_512; 205 else { 206 error = EINVAL; 207 break; 208 } 209 break; 210 case CRYPTO_RIPEMD160_HMAC: 211 thash = &auth_hash_hmac_ripemd_160_96; 212 break; 213 #ifdef notdef 214 case CRYPTO_MD5: 215 thash = &auth_hash_md5; 216 break; 217 case CRYPTO_SHA1: 218 thash = &auth_hash_sha1; 219 break; 220 #endif 221 case CRYPTO_NULL_HMAC: 222 thash = &auth_hash_null; 223 break; 224 default: 225 error = EINVAL; 226 break; 227 } 228 if (error) 229 break; 230 231 bzero(&crie, sizeof(crie)); 232 bzero(&cria, sizeof(cria)); 233 234 if (txform) { 235 crie.cri_alg = txform->type; 236 crie.cri_klen = sop->keylen * 8; 237 if (sop->keylen > txform->maxkey || 238 sop->keylen < txform->minkey) { 239 error = EINVAL; 240 goto bail; 241 } 242 243 MALLOC(crie.cri_key, u_int8_t *, 244 crie.cri_klen / 8, M_XDATA, M_WAITOK); 245 if ((error = copyin(sop->key, crie.cri_key, 246 crie.cri_klen / 8))) 247 goto bail; 248 if (thash) 249 crie.cri_next = &cria; 250 } 251 252 if (thash) { 253 cria.cri_alg = thash->type; 254 cria.cri_klen = sop->mackeylen * 8; 255 if (sop->mackeylen != thash->keysize) { 256 error = EINVAL; 257 goto bail; 258 } 259 260 if (cria.cri_klen) { 261 MALLOC(cria.cri_key, u_int8_t *, 262 cria.cri_klen / 8, M_XDATA, M_WAITOK); 263 if ((error = copyin(sop->mackey, cria.cri_key, 264 cria.cri_klen / 8))) 265 goto bail; 266 } 267 } 268 269 error = crypto_newsession(&sid, (txform ? &crie : &cria), 1); 270 if (error) 271 goto bail; 272 273 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 274 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform, 275 thash); 276 277 if (cse == NULL) { 278 crypto_freesession(sid); 279 error = EINVAL; 280 goto bail; 281 } 282 sop->ses = cse->ses; 283 284 bail: 285 if (error) { 286 if (crie.cri_key) 287 FREE(crie.cri_key, M_XDATA); 288 if (cria.cri_key) 289 FREE(cria.cri_key, M_XDATA); 290 } 291 break; 292 case CIOCFSESSION: 293 ses = *(u_int32_t *)data; 294 cse = csefind(fcr, ses); 295 if (cse == NULL) { 296 error = EINVAL; 297 break; 298 } 299 csedelete(fcr, cse); 300 error = csefree(cse); 301 break; 302 case CIOCCRYPT: 303 cop = (struct crypt_op *)data; 304 cse = csefind(fcr, cop->ses); 305 if (cse == NULL) { 306 error = EINVAL; 307 break; 308 } 309 error = cryptodev_op(cse, cop); 310 break; 311 case CIOCKEY: 312 error = cryptodev_key((struct crypt_kop *)data); 313 break; 314 case CIOCASYMFEAT: 315 error = crypto_getfeat((int *)data); 316 break; 317 default: 318 error = EINVAL; 319 break; 320 } 321 rel_mplock(); 322 return (error); 323 } 324 325 static int cryptodev_cb(void *); 326 327 328 static int 329 cryptodev_op(struct csession *cse, struct crypt_op *cop) 330 { 331 struct cryptop *crp = NULL; 332 struct cryptodesc *crde = NULL, *crda = NULL; 333 int i, error; 334 335 if (cop->len > 256*1024-4) 336 return (E2BIG); 337 338 if (cse->txform && (cop->len % cse->txform->blocksize) != 0) 339 return (EINVAL); 340 341 bzero(&cse->uio, sizeof(cse->uio)); 342 cse->uio.uio_iovcnt = 1; 343 cse->uio.uio_resid = 0; 344 cse->uio.uio_segflg = UIO_SYSSPACE; 345 cse->uio.uio_rw = UIO_WRITE; 346 cse->uio.uio_td = curthread; 347 cse->uio.uio_iov = cse->iovec; 348 bzero(&cse->iovec, sizeof(cse->iovec)); 349 cse->uio.uio_iov[0].iov_len = cop->len; 350 cse->uio.uio_iov[0].iov_base = kmalloc(cop->len, M_XDATA, M_WAITOK); 351 for (i = 0; i < cse->uio.uio_iovcnt; i++) 352 cse->uio.uio_resid += cse->uio.uio_iov[0].iov_len; 353 354 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL)); 355 if (crp == NULL) { 356 error = ENOMEM; 357 goto bail; 358 } 359 360 if (cse->thash) { 361 crda = crp->crp_desc; 362 if (cse->txform) 363 crde = crda->crd_next; 364 } else { 365 if (cse->txform) 366 crde = crp->crp_desc; 367 else { 368 error = EINVAL; 369 goto bail; 370 } 371 } 372 373 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 374 goto bail; 375 376 if (crda) { 377 crda->crd_skip = 0; 378 crda->crd_len = cop->len; 379 crda->crd_inject = 0; /* ??? */ 380 381 crda->crd_alg = cse->mac; 382 crda->crd_key = cse->mackey; 383 crda->crd_klen = cse->mackeylen * 8; 384 } 385 386 if (crde) { 387 if (cop->op == COP_ENCRYPT) 388 crde->crd_flags |= CRD_F_ENCRYPT; 389 else 390 crde->crd_flags &= ~CRD_F_ENCRYPT; 391 crde->crd_len = cop->len; 392 crde->crd_inject = 0; 393 394 crde->crd_alg = cse->cipher; 395 crde->crd_key = cse->key; 396 crde->crd_klen = cse->keylen * 8; 397 } 398 399 crp->crp_ilen = cop->len; 400 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM 401 | (cop->flags & COP_F_BATCH); 402 crp->crp_buf = (caddr_t)&cse->uio; 403 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 404 crp->crp_sid = cse->sid; 405 crp->crp_opaque = (void *)cse; 406 407 if (cop->iv) { 408 if (crde == NULL) { 409 error = EINVAL; 410 goto bail; 411 } 412 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 413 error = EINVAL; 414 goto bail; 415 } 416 if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize))) 417 goto bail; 418 bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize); 419 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 420 crde->crd_skip = 0; 421 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 422 crde->crd_skip = 0; 423 } else if (crde) { 424 crde->crd_flags |= CRD_F_IV_PRESENT; 425 crde->crd_skip = cse->txform->blocksize; 426 crde->crd_len -= cse->txform->blocksize; 427 } 428 429 if (cop->mac) { 430 if (crda == NULL) { 431 error = EINVAL; 432 goto bail; 433 } 434 crp->crp_mac=cse->tmp_mac; 435 } 436 437 crit_enter(); 438 error = crypto_dispatch(crp); 439 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0) 440 error = tsleep(crp, 0, "crydev", 0); 441 crit_exit(); 442 if (error) 443 goto bail; 444 445 if (crp->crp_etype != 0) { 446 error = crp->crp_etype; 447 goto bail; 448 } 449 450 if (cse->error) { 451 error = cse->error; 452 goto bail; 453 } 454 455 if (cop->dst && 456 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len))) 457 goto bail; 458 459 if (cop->mac && 460 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) 461 goto bail; 462 463 bail: 464 if (crp) 465 crypto_freereq(crp); 466 if (cse->uio.uio_iov[0].iov_base) 467 kfree(cse->uio.uio_iov[0].iov_base, M_XDATA); 468 469 return (error); 470 } 471 472 static int 473 cryptodev_cb(void *op) 474 { 475 struct cryptop *crp = (struct cryptop *) op; 476 struct csession *cse = (struct csession *)crp->crp_opaque; 477 478 cse->error = crp->crp_etype; 479 if (crp->crp_etype == EAGAIN) 480 return crypto_dispatch(crp); 481 wakeup_one(crp); 482 return (0); 483 } 484 485 static int 486 cryptodevkey_cb(void *op) 487 { 488 struct cryptkop *krp = (struct cryptkop *) op; 489 490 wakeup_one(krp); 491 return (0); 492 } 493 494 static int 495 cryptodev_key(struct crypt_kop *kop) 496 { 497 struct cryptkop *krp = NULL; 498 int error = EINVAL; 499 int in, out, size, i; 500 501 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) { 502 return (EFBIG); 503 } 504 505 in = kop->crk_iparams; 506 out = kop->crk_oparams; 507 switch (kop->crk_op) { 508 case CRK_MOD_EXP: 509 if (in == 3 && out == 1) 510 break; 511 return (EINVAL); 512 case CRK_MOD_EXP_CRT: 513 if (in == 6 && out == 1) 514 break; 515 return (EINVAL); 516 case CRK_DSA_SIGN: 517 if (in == 5 && out == 2) 518 break; 519 return (EINVAL); 520 case CRK_DSA_VERIFY: 521 if (in == 7 && out == 0) 522 break; 523 return (EINVAL); 524 case CRK_DH_COMPUTE_KEY: 525 if (in == 3 && out == 1) 526 break; 527 return (EINVAL); 528 default: 529 return (EINVAL); 530 } 531 532 krp = (struct cryptkop *)kmalloc(sizeof *krp, M_XDATA, M_WAITOK | M_ZERO); 533 krp->krp_op = kop->crk_op; 534 krp->krp_status = kop->crk_status; 535 krp->krp_iparams = kop->crk_iparams; 536 krp->krp_oparams = kop->crk_oparams; 537 krp->krp_status = 0; 538 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 539 540 for (i = 0; i < CRK_MAXPARAM; i++) 541 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 542 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 543 size = (krp->krp_param[i].crp_nbits + 7) / 8; 544 if (size == 0) 545 continue; 546 MALLOC(krp->krp_param[i].crp_p, caddr_t, size, M_XDATA, M_WAITOK); 547 if (i >= krp->krp_iparams) 548 continue; 549 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size); 550 if (error) 551 goto fail; 552 } 553 554 error = crypto_kdispatch(krp); 555 if (error == 0) 556 error = tsleep(krp, 0, "crydev", 0); 557 if (error) 558 goto fail; 559 560 if (krp->krp_status != 0) { 561 error = krp->krp_status; 562 goto fail; 563 } 564 565 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) { 566 size = (krp->krp_param[i].crp_nbits + 7) / 8; 567 if (size == 0) 568 continue; 569 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size); 570 if (error) 571 goto fail; 572 } 573 574 fail: 575 if (krp) { 576 kop->crk_status = krp->krp_status; 577 for (i = 0; i < CRK_MAXPARAM; i++) { 578 if (krp->krp_param[i].crp_p) 579 FREE(krp->krp_param[i].crp_p, M_XDATA); 580 } 581 kfree(krp, M_XDATA); 582 } 583 return (error); 584 } 585 586 /* 587 * MPSAFE 588 */ 589 static int 590 cryptof_poll(struct file *fp, int events, struct ucred *active_cred) 591 { 592 return (0); 593 } 594 595 /* 596 * MPSAFE 597 */ 598 static int 599 cryptof_kqfilter(struct file *fp, struct knote *kn) 600 { 601 602 return (0); 603 } 604 605 /* 606 * MPSAFE 607 */ 608 static int 609 cryptof_stat(struct file *fp, struct stat *sb, struct ucred *cred) 610 { 611 return (EOPNOTSUPP); 612 } 613 614 /* 615 * MPALMOSTSAFE - acquires mplock 616 */ 617 static int 618 cryptof_close(struct file *fp) 619 { 620 struct fcrypt *fcr; 621 struct csession *cse; 622 623 get_mplock(); 624 fcr = (struct fcrypt *)fp->f_data; 625 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 626 TAILQ_REMOVE(&fcr->csessions, cse, next); 627 (void)csefree(cse); 628 } 629 fp->f_data = NULL; 630 rel_mplock(); 631 632 FREE(fcr, M_XDATA); 633 return (0); 634 } 635 636 static struct csession * 637 csefind(struct fcrypt *fcr, u_int ses) 638 { 639 struct csession *cse; 640 641 TAILQ_FOREACH(cse, &fcr->csessions, next) 642 if (cse->ses == ses) 643 return (cse); 644 return (NULL); 645 } 646 647 static int 648 csedelete(struct fcrypt *fcr, struct csession *cse_del) 649 { 650 struct csession *cse; 651 652 TAILQ_FOREACH(cse, &fcr->csessions, next) { 653 if (cse == cse_del) { 654 TAILQ_REMOVE(&fcr->csessions, cse, next); 655 return (1); 656 } 657 } 658 return (0); 659 } 660 661 static struct csession * 662 cseadd(struct fcrypt *fcr, struct csession *cse) 663 { 664 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 665 cse->ses = fcr->sesn++; 666 return (cse); 667 } 668 669 struct csession * 670 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen, 671 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 672 struct enc_xform *txform, struct auth_hash *thash) 673 { 674 struct csession *cse; 675 676 MALLOC(cse, struct csession *, sizeof(struct csession), 677 M_XDATA, M_NOWAIT); 678 if (cse == NULL) 679 return NULL; 680 cse->key = key; 681 cse->keylen = keylen/8; 682 cse->mackey = mackey; 683 cse->mackeylen = mackeylen/8; 684 cse->sid = sid; 685 cse->cipher = cipher; 686 cse->mac = mac; 687 cse->txform = txform; 688 cse->thash = thash; 689 cseadd(fcr, cse); 690 return (cse); 691 } 692 693 static int 694 csefree(struct csession *cse) 695 { 696 int error; 697 698 error = crypto_freesession(cse->sid); 699 if (cse->key) 700 FREE(cse->key, M_XDATA); 701 if (cse->mackey) 702 FREE(cse->mackey, M_XDATA); 703 FREE(cse, M_XDATA); 704 return (error); 705 } 706 707 static int 708 cryptoopen(struct dev_open_args *ap) 709 { 710 if (crypto_usercrypto == 0) 711 return (ENXIO); 712 return (0); 713 } 714 715 static int 716 cryptoread(struct dev_read_args *ap) 717 { 718 return (EIO); 719 } 720 721 static int 722 cryptowrite(struct dev_write_args *ap) 723 { 724 return (EIO); 725 } 726 727 static int 728 cryptoioctl(struct dev_ioctl_args *ap) 729 { 730 struct file *f; 731 struct fcrypt *fcr; 732 int fd, error; 733 734 switch (ap->a_cmd) { 735 case CRIOGET: 736 MALLOC(fcr, struct fcrypt *, 737 sizeof(struct fcrypt), M_XDATA, M_WAITOK); 738 TAILQ_INIT(&fcr->csessions); 739 fcr->sesn = 0; 740 741 KKASSERT(curproc); 742 error = falloc(curproc, &f, &fd); 743 744 if (error) { 745 FREE(fcr, M_XDATA); 746 return (error); 747 } 748 f->f_type = DTYPE_CRYPTO; 749 f->f_flag = FREAD | FWRITE; 750 f->f_ops = &cryptofops; 751 f->f_data = fcr; 752 fsetfd(curproc, f, fd); 753 *(u_int32_t *)ap->a_data = fd; 754 fdrop(f); 755 break; 756 default: 757 error = EINVAL; 758 break; 759 } 760 return (error); 761 } 762 763 #define CRYPTO_MAJOR 70 /* from openbsd */ 764 static struct dev_ops crypto_ops = { 765 { "crypto", CRYPTO_MAJOR, 0 }, 766 .d_open = cryptoopen, 767 .d_close = nullclose, 768 .d_read = cryptoread, 769 .d_write = cryptowrite, 770 .d_ioctl = cryptoioctl, 771 }; 772 773 /* 774 * Initialization code, both for static and dynamic loading. 775 */ 776 static int 777 cryptodev_modevent(module_t mod, int type, void *unused) 778 { 779 switch (type) { 780 case MOD_LOAD: 781 if (bootverbose) 782 kprintf("crypto: <crypto device>\n"); 783 make_dev(&crypto_ops, 0, UID_ROOT, GID_WHEEL, 784 0666, "crypto"); 785 return 0; 786 case MOD_UNLOAD: 787 /*XXX disallow if active sessions */ 788 //dev_ops_remove(&crypto_ops, 0, 0); 789 dev_ops_remove_all(&crypto_ops); 790 return 0; 791 } 792 return EINVAL; 793 } 794 795 static moduledata_t cryptodev_mod = { 796 "cryptodev", 797 cryptodev_modevent, 798 0 799 }; 800 MODULE_VERSION(cryptodev, 1); 801 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 802 #if 0 803 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1); 804 #endif 805