Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/cryptodev.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /* $FreeBSD$ */ 2 /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Theo de Raadt 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * Effort sponsored in part by the Defense Advanced Research Projects 31 * Agency (DARPA) and Air Force Research Laboratory, Air Force 32 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 33 * 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/mbuf.h> 40 #include <sys/sysctl.h> 41 #include <sys/file.h> 42 #include <sys/filedesc.h> 43 #include <sys/errno.h> 44 #include <sys/uio.h> 45 #include <sys/random.h> 46 #include <sys/conf.h> 47 #include <sys/kernel.h> 48 #include <sys/fcntl.h> 49 50 #include <opencrypto/cryptodev.h> 51 #include <opencrypto/xform.h> 52 53 struct csession { 54 TAILQ_ENTRY(csession) next; 55 u_int64_t sid; 56 u_int32_t ses; 57 58 u_int32_t cipher; 59 struct enc_xform *txform; 60 u_int32_t mac; 61 struct auth_hash *thash; 62 63 caddr_t key; 64 int keylen; 65 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 66 67 caddr_t mackey; 68 int mackeylen; 69 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 70 71 struct iovec iovec[UIO_MAXIOV]; 72 struct uio uio; 73 int error; 74 }; 75 76 struct fcrypt { 77 TAILQ_HEAD(csessionlist, csession) csessions; 78 int sesn; 79 }; 80 81 static int cryptof_rw(struct file *fp, struct uio *uio, 82 struct ucred *cred, int flags, struct proc *); 83 static int cryptof_ioctl(struct file *, u_long, caddr_t, struct proc *); 84 static int cryptof_poll(struct file *, int, struct ucred *, struct proc *); 85 static int cryptof_kqfilter(struct file *, struct knote *); 86 static int cryptof_stat(struct file *, struct stat *, struct proc *); 87 static int cryptof_close(struct file *, struct proc *); 88 89 static struct fileops cryptofops = { 90 cryptof_rw, 91 cryptof_rw, 92 cryptof_ioctl, 93 cryptof_poll, 94 cryptof_kqfilter, 95 cryptof_stat, 96 cryptof_close 97 }; 98 99 static struct csession *csefind(struct fcrypt *, u_int); 100 static int csedelete(struct fcrypt *, struct csession *); 101 static struct csession *cseadd(struct fcrypt *, struct csession *); 102 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t, 103 u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *, 104 struct auth_hash *); 105 static int csefree(struct csession *); 106 107 static int cryptodev_op(struct csession *, struct crypt_op *, 108 struct proc *p); 109 static int cryptodev_key(struct crypt_kop *); 110 111 static int 112 cryptof_rw( 113 struct file *fp, 114 struct uio *uio, 115 struct ucred *active_cred, 116 int flags, 117 struct proc *p) 118 { 119 120 return (EIO); 121 } 122 123 /* ARGSUSED */ 124 static int 125 cryptof_ioctl( 126 struct file *fp, 127 u_long cmd, 128 caddr_t data, 129 struct proc *p) 130 { 131 struct cryptoini cria, crie; 132 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 133 struct csession *cse; 134 struct session_op *sop; 135 struct crypt_op *cop; 136 struct enc_xform *txform = NULL; 137 struct auth_hash *thash = NULL; 138 u_int64_t sid; 139 u_int32_t ses; 140 int error = 0; 141 142 switch (cmd) { 143 case CIOCGSESSION: 144 sop = (struct session_op *)data; 145 switch (sop->cipher) { 146 case 0: 147 break; 148 case CRYPTO_DES_CBC: 149 txform = &enc_xform_des; 150 break; 151 case CRYPTO_3DES_CBC: 152 txform = &enc_xform_3des; 153 break; 154 case CRYPTO_BLF_CBC: 155 txform = &enc_xform_blf; 156 break; 157 case CRYPTO_CAST_CBC: 158 txform = &enc_xform_cast5; 159 break; 160 case CRYPTO_SKIPJACK_CBC: 161 txform = &enc_xform_skipjack; 162 break; 163 case CRYPTO_AES_CBC: 164 txform = &enc_xform_rijndael128; 165 break; 166 case CRYPTO_NULL_CBC: 167 txform = &enc_xform_null; 168 break; 169 case CRYPTO_ARC4: 170 txform = &enc_xform_arc4; 171 break; 172 default: 173 return (EINVAL); 174 } 175 176 switch (sop->mac) { 177 case 0: 178 break; 179 case CRYPTO_MD5_HMAC: 180 thash = &auth_hash_hmac_md5_96; 181 break; 182 case CRYPTO_SHA1_HMAC: 183 thash = &auth_hash_hmac_sha1_96; 184 break; 185 case CRYPTO_SHA2_HMAC: 186 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) 187 thash = &auth_hash_hmac_sha2_256; 188 else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) 189 thash = &auth_hash_hmac_sha2_384; 190 else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) 191 thash = &auth_hash_hmac_sha2_512; 192 else 193 return (EINVAL); 194 break; 195 case CRYPTO_RIPEMD160_HMAC: 196 thash = &auth_hash_hmac_ripemd_160_96; 197 break; 198 #ifdef notdef 199 case CRYPTO_MD5: 200 thash = &auth_hash_md5; 201 break; 202 case CRYPTO_SHA1: 203 thash = &auth_hash_sha1; 204 break; 205 #endif 206 case CRYPTO_NULL_HMAC: 207 thash = &auth_hash_null; 208 break; 209 default: 210 return (EINVAL); 211 } 212 213 bzero(&crie, sizeof(crie)); 214 bzero(&cria, sizeof(cria)); 215 216 if (txform) { 217 crie.cri_alg = txform->type; 218 crie.cri_klen = sop->keylen * 8; 219 if (sop->keylen > txform->maxkey || 220 sop->keylen < txform->minkey) { 221 error = EINVAL; 222 goto bail; 223 } 224 225 MALLOC(crie.cri_key, u_int8_t *, 226 crie.cri_klen / 8, M_XDATA, M_WAITOK); 227 if ((error = copyin(sop->key, crie.cri_key, 228 crie.cri_klen / 8))) 229 goto bail; 230 if (thash) 231 crie.cri_next = &cria; 232 } 233 234 if (thash) { 235 cria.cri_alg = thash->type; 236 cria.cri_klen = sop->mackeylen * 8; 237 if (sop->mackeylen != thash->keysize) { 238 error = EINVAL; 239 goto bail; 240 } 241 242 if (cria.cri_klen) { 243 MALLOC(cria.cri_key, u_int8_t *, 244 cria.cri_klen / 8, M_XDATA, M_WAITOK); 245 if ((error = copyin(sop->mackey, cria.cri_key, 246 cria.cri_klen / 8))) 247 goto bail; 248 } 249 } 250 251 error = crypto_newsession(&sid, (txform ? &crie : &cria), 1); 252 if (error) 253 goto bail; 254 255 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 256 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform, 257 thash); 258 259 if (cse == NULL) { 260 crypto_freesession(sid); 261 error = EINVAL; 262 goto bail; 263 } 264 sop->ses = cse->ses; 265 266 bail: 267 if (error) { 268 if (crie.cri_key) 269 FREE(crie.cri_key, M_XDATA); 270 if (cria.cri_key) 271 FREE(cria.cri_key, M_XDATA); 272 } 273 break; 274 case CIOCFSESSION: 275 ses = *(u_int32_t *)data; 276 cse = csefind(fcr, ses); 277 if (cse == NULL) 278 return (EINVAL); 279 csedelete(fcr, cse); 280 error = csefree(cse); 281 break; 282 case CIOCCRYPT: 283 cop = (struct crypt_op *)data; 284 cse = csefind(fcr, cop->ses); 285 if (cse == NULL) 286 return (EINVAL); 287 error = cryptodev_op(cse, cop, p); 288 break; 289 case CIOCKEY: 290 error = cryptodev_key((struct crypt_kop *)data); 291 break; 292 case CIOCASYMFEAT: 293 error = crypto_getfeat((int *)data); 294 break; 295 default: 296 error = EINVAL; 297 } 298 return (error); 299 } 300 301 static int cryptodev_cb(void *); 302 303 304 static int 305 cryptodev_op( 306 struct csession *cse, 307 struct crypt_op *cop, 308 struct proc *p) 309 { 310 struct cryptop *crp = NULL; 311 struct cryptodesc *crde = NULL, *crda = NULL; 312 int i, error, s; 313 314 if (cop->len > 256*1024-4) 315 return (E2BIG); 316 317 if (cse->txform) { 318 if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0) 319 return (EINVAL); 320 } 321 322 bzero(&cse->uio, sizeof(cse->uio)); 323 cse->uio.uio_iovcnt = 1; 324 cse->uio.uio_resid = 0; 325 cse->uio.uio_segflg = UIO_SYSSPACE; 326 cse->uio.uio_rw = UIO_WRITE; 327 cse->uio.uio_procp = p; 328 cse->uio.uio_iov = cse->iovec; 329 bzero(&cse->iovec, sizeof(cse->iovec)); 330 cse->uio.uio_iov[0].iov_len = cop->len; 331 cse->uio.uio_iov[0].iov_base = malloc(cop->len, M_XDATA, M_WAITOK); 332 for (i = 0; i < cse->uio.uio_iovcnt; i++) 333 cse->uio.uio_resid += cse->uio.uio_iov[0].iov_len; 334 335 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL)); 336 if (crp == NULL) { 337 error = ENOMEM; 338 goto bail; 339 } 340 341 if (cse->thash) { 342 crda = crp->crp_desc; 343 if (cse->txform) 344 crde = crda->crd_next; 345 } else { 346 if (cse->txform) 347 crde = crp->crp_desc; 348 else { 349 error = EINVAL; 350 goto bail; 351 } 352 } 353 354 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 355 goto bail; 356 357 if (crda) { 358 crda->crd_skip = 0; 359 crda->crd_len = cop->len; 360 crda->crd_inject = 0; /* ??? */ 361 362 crda->crd_alg = cse->mac; 363 crda->crd_key = cse->mackey; 364 crda->crd_klen = cse->mackeylen * 8; 365 } 366 367 if (crde) { 368 if (cop->op == COP_ENCRYPT) 369 crde->crd_flags |= CRD_F_ENCRYPT; 370 else 371 crde->crd_flags &= ~CRD_F_ENCRYPT; 372 crde->crd_len = cop->len; 373 crde->crd_inject = 0; 374 375 crde->crd_alg = cse->cipher; 376 crde->crd_key = cse->key; 377 crde->crd_klen = cse->keylen * 8; 378 } 379 380 crp->crp_ilen = cop->len; 381 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM 382 | (cop->flags & COP_F_BATCH); 383 crp->crp_buf = (caddr_t)&cse->uio; 384 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 385 crp->crp_sid = cse->sid; 386 crp->crp_opaque = (void *)cse; 387 388 if (cop->iv) { 389 if (crde == NULL) { 390 error = EINVAL; 391 goto bail; 392 } 393 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 394 error = EINVAL; 395 goto bail; 396 } 397 if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize))) 398 goto bail; 399 bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize); 400 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 401 crde->crd_skip = 0; 402 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 403 crde->crd_skip = 0; 404 } else if (crde) { 405 crde->crd_flags |= CRD_F_IV_PRESENT; 406 crde->crd_skip = cse->txform->blocksize; 407 crde->crd_len -= cse->txform->blocksize; 408 } 409 410 if (cop->mac) { 411 if (crda == NULL) { 412 error = EINVAL; 413 goto bail; 414 } 415 crp->crp_mac=cse->tmp_mac; 416 } 417 418 s = splcrypto(); /* NB: only needed with CRYPTO_F_CBIMM */ 419 error = crypto_dispatch(crp); 420 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0) 421 error = tsleep(crp, PSOCK, "crydev", 0); 422 splx(s); 423 if (error) 424 goto bail; 425 426 if (crp->crp_etype != 0) { 427 error = crp->crp_etype; 428 goto bail; 429 } 430 431 if (cse->error) { 432 error = cse->error; 433 goto bail; 434 } 435 436 if (cop->dst && 437 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len))) 438 goto bail; 439 440 if (cop->mac && 441 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) 442 goto bail; 443 444 bail: 445 if (crp) 446 crypto_freereq(crp); 447 if (cse->uio.uio_iov[0].iov_base) 448 free(cse->uio.uio_iov[0].iov_base, M_XDATA); 449 450 return (error); 451 } 452 453 static int 454 cryptodev_cb(void *op) 455 { 456 struct cryptop *crp = (struct cryptop *) op; 457 struct csession *cse = (struct csession *)crp->crp_opaque; 458 459 cse->error = crp->crp_etype; 460 if (crp->crp_etype == EAGAIN) 461 return crypto_dispatch(crp); 462 wakeup_one(crp); 463 return (0); 464 } 465 466 static int 467 cryptodevkey_cb(void *op) 468 { 469 struct cryptkop *krp = (struct cryptkop *) op; 470 471 wakeup_one(krp); 472 return (0); 473 } 474 475 static int 476 cryptodev_key(struct crypt_kop *kop) 477 { 478 struct cryptkop *krp = NULL; 479 int error = EINVAL; 480 int in, out, size, i; 481 482 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) { 483 return (EFBIG); 484 } 485 486 in = kop->crk_iparams; 487 out = kop->crk_oparams; 488 switch (kop->crk_op) { 489 case CRK_MOD_EXP: 490 if (in == 3 && out == 1) 491 break; 492 return (EINVAL); 493 case CRK_MOD_EXP_CRT: 494 if (in == 6 && out == 1) 495 break; 496 return (EINVAL); 497 case CRK_DSA_SIGN: 498 if (in == 5 && out == 2) 499 break; 500 return (EINVAL); 501 case CRK_DSA_VERIFY: 502 if (in == 7 && out == 0) 503 break; 504 return (EINVAL); 505 case CRK_DH_COMPUTE_KEY: 506 if (in == 3 && out == 1) 507 break; 508 return (EINVAL); 509 default: 510 return (EINVAL); 511 } 512 513 krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK); 514 if (!krp) 515 return (ENOMEM); 516 bzero(krp, sizeof *krp); 517 krp->krp_op = kop->crk_op; 518 krp->krp_status = kop->crk_status; 519 krp->krp_iparams = kop->crk_iparams; 520 krp->krp_oparams = kop->crk_oparams; 521 krp->krp_status = 0; 522 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 523 524 for (i = 0; i < CRK_MAXPARAM; i++) 525 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 526 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 527 size = (krp->krp_param[i].crp_nbits + 7) / 8; 528 if (size == 0) 529 continue; 530 MALLOC(krp->krp_param[i].crp_p, caddr_t, size, M_XDATA, M_WAITOK); 531 if (i >= krp->krp_iparams) 532 continue; 533 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size); 534 if (error) 535 goto fail; 536 } 537 538 error = crypto_kdispatch(krp); 539 if (error == 0) 540 error = tsleep(krp, PSOCK, "crydev", 0); 541 if (error) 542 goto fail; 543 544 if (krp->krp_status != 0) { 545 error = krp->krp_status; 546 goto fail; 547 } 548 549 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) { 550 size = (krp->krp_param[i].crp_nbits + 7) / 8; 551 if (size == 0) 552 continue; 553 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size); 554 if (error) 555 goto fail; 556 } 557 558 fail: 559 if (krp) { 560 kop->crk_status = krp->krp_status; 561 for (i = 0; i < CRK_MAXPARAM; i++) { 562 if (krp->krp_param[i].crp_p) 563 FREE(krp->krp_param[i].crp_p, M_XDATA); 564 } 565 free(krp, M_XDATA); 566 } 567 return (error); 568 } 569 570 /* ARGSUSED */ 571 static int 572 cryptof_poll( 573 struct file *fp, 574 int events, 575 struct ucred *active_cred, 576 struct proc *p) 577 { 578 579 return (0); 580 } 581 582 /* ARGSUSED */ 583 static int 584 cryptof_kqfilter(struct file *fp, struct knote *kn) 585 { 586 587 return (0); 588 } 589 590 /* ARGSUSED */ 591 static int 592 cryptof_stat( 593 struct file *fp, 594 struct stat *sb, 595 struct proc *p) 596 { 597 598 return (EOPNOTSUPP); 599 } 600 601 /* ARGSUSED */ 602 static int 603 cryptof_close(struct file *fp, struct proc *p) 604 { 605 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 606 struct csession *cse; 607 608 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 609 TAILQ_REMOVE(&fcr->csessions, cse, next); 610 (void)csefree(cse); 611 } 612 FREE(fcr, M_XDATA); 613 fp->f_data = NULL; 614 return 0; 615 } 616 617 static struct csession * 618 csefind(struct fcrypt *fcr, u_int ses) 619 { 620 struct csession *cse; 621 622 TAILQ_FOREACH(cse, &fcr->csessions, next) 623 if (cse->ses == ses) 624 return (cse); 625 return (NULL); 626 } 627 628 static int 629 csedelete(struct fcrypt *fcr, struct csession *cse_del) 630 { 631 struct csession *cse; 632 633 TAILQ_FOREACH(cse, &fcr->csessions, next) { 634 if (cse == cse_del) { 635 TAILQ_REMOVE(&fcr->csessions, cse, next); 636 return (1); 637 } 638 } 639 return (0); 640 } 641 642 static struct csession * 643 cseadd(struct fcrypt *fcr, struct csession *cse) 644 { 645 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 646 cse->ses = fcr->sesn++; 647 return (cse); 648 } 649 650 struct csession * 651 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen, 652 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 653 struct enc_xform *txform, struct auth_hash *thash) 654 { 655 struct csession *cse; 656 657 MALLOC(cse, struct csession *, sizeof(struct csession), 658 M_XDATA, M_NOWAIT); 659 if (cse == NULL) 660 return NULL; 661 cse->key = key; 662 cse->keylen = keylen/8; 663 cse->mackey = mackey; 664 cse->mackeylen = mackeylen/8; 665 cse->sid = sid; 666 cse->cipher = cipher; 667 cse->mac = mac; 668 cse->txform = txform; 669 cse->thash = thash; 670 cseadd(fcr, cse); 671 return (cse); 672 } 673 674 static int 675 csefree(struct csession *cse) 676 { 677 int error; 678 679 error = crypto_freesession(cse->sid); 680 if (cse->key) 681 FREE(cse->key, M_XDATA); 682 if (cse->mackey) 683 FREE(cse->mackey, M_XDATA); 684 FREE(cse, M_XDATA); 685 return (error); 686 } 687 688 static int 689 cryptoopen(dev_t dev, int oflags, int devtype, struct proc *p) 690 { 691 if (crypto_usercrypto == 0) 692 return (ENXIO); 693 return (0); 694 } 695 696 static int 697 cryptoread(dev_t dev, struct uio *uio, int ioflag) 698 { 699 return (EIO); 700 } 701 702 static int 703 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 704 { 705 return (EIO); 706 } 707 708 static int 709 cryptoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 710 { 711 struct file *f; 712 struct fcrypt *fcr; 713 int fd, error; 714 switch (cmd) { 715 case CRIOGET: 716 MALLOC(fcr, struct fcrypt *, 717 sizeof(struct fcrypt), M_XDATA, M_WAITOK); 718 TAILQ_INIT(&fcr->csessions); 719 fcr->sesn = 0; 720 721 error = falloc(p, &f, &fd); 722 723 if (error) { 724 FREE(fcr, M_XDATA); 725 return (error); 726 } 727 fhold(f); 728 f->f_flag = FREAD | FWRITE; 729 f->f_type = DTYPE_CRYPTO; 730 f->f_ops = &cryptofops; 731 f->f_data = (caddr_t) fcr; 732 *(u_int32_t *)data = fd; 733 fdrop(f, p); 734 break; 735 default: 736 error = EINVAL; 737 break; 738 } 739 return (error); 740 } 741 742 #define CRYPTO_MAJOR 70 /* from openbsd */ 743 static struct cdevsw crypto_cdevsw = { 744 /* open */ cryptoopen, 745 /* close */ nullclose, 746 /* read */ cryptoread, 747 /* write */ cryptowrite, 748 /* ioctl */ cryptoioctl, 749 /* poll */ nopoll, 750 /* mmap */ nommap, 751 /* strategy */ nostrategy, 752 /* dev name */ "crypto", 753 /* dev major */ CRYPTO_MAJOR, 754 /* dump */ nodump, 755 /* psize */ nopsize, 756 /* flags */ 0, 757 /* kqfilter */ NULL 758 }; 759 static dev_t crypto_dev; 760 761 /* 762 * Initialization code, both for static and dynamic loading. 763 */ 764 static int 765 cryptodev_modevent(module_t mod, int type, void *unused) 766 { 767 switch (type) { 768 case MOD_LOAD: 769 if (bootverbose) 770 printf("crypto: <crypto device>\n"); 771 crypto_dev = make_dev(&crypto_cdevsw, 0, 772 UID_ROOT, GID_WHEEL, 0666, 773 "crypto"); 774 return 0; 775 case MOD_UNLOAD: 776 /*XXX disallow if active sessions */ 777 destroy_dev(crypto_dev); 778 return 0; 779 } 780 return EINVAL; 781 } 782 783 static moduledata_t cryptodev_mod = { 784 "cryptodev", 785 cryptodev_modevent, 786 0 787 }; 788 MODULE_VERSION(cryptodev, 1); 789 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 790 #if 0 791 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1); 792 #endif
Cache object: 81fcb80cad78c606a75d16598dd2c077
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]