Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/cryptodev.c
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1 /* $NetBSD: cryptodev.c,v 1.10 2003/11/19 04:14:07 jonathan 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) 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/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: cryptodev.c,v 1.10 2003/11/19 04:14:07 jonathan Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/malloc.h> 43 #include <sys/mbuf.h> 44 #include <sys/sysctl.h> 45 #include <sys/file.h> 46 #include <sys/filedesc.h> 47 #include <sys/errno.h> 48 #include <sys/md5.h> 49 #include <sys/sha1.h> 50 #include <sys/conf.h> 51 #include <sys/device.h> 52 53 #include <opencrypto/cryptodev.h> 54 #include <opencrypto/xform.h> 55 56 #ifdef __NetBSD__ 57 #define splcrypto splnet 58 #endif 59 60 struct csession { 61 TAILQ_ENTRY(csession) next; 62 u_int64_t sid; 63 u_int32_t ses; 64 65 u_int32_t cipher; 66 struct enc_xform *txform; 67 u_int32_t mac; 68 struct auth_hash *thash; 69 70 caddr_t key; 71 int keylen; 72 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 73 74 caddr_t mackey; 75 int mackeylen; 76 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 77 78 struct iovec iovec[IOV_MAX]; 79 struct uio uio; 80 int error; 81 }; 82 83 struct fcrypt { 84 TAILQ_HEAD(csessionlist, csession) csessions; 85 int sesn; 86 }; 87 88 89 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 90 static int cryptoopen(dev_t dev, int flag, int mode, struct proc *p); 91 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 92 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 93 static int cryptoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p); 94 static int cryptoselect(dev_t dev, int rw, struct proc *p); 95 96 /* Declaration of cloned-device (per-ctxt) entrypoints */ 97 static int cryptof_read(struct file *, off_t *, struct uio *, struct ucred *, int); 98 static int cryptof_write(struct file *, off_t *, struct uio *, struct ucred *, int); 99 static int cryptof_ioctl(struct file *, u_long, void*, struct proc *p); 100 static int cryptof_fcntl(struct file *, u_int, void*, struct proc *p); 101 static int cryptof_poll(struct file *, int, struct proc *); 102 static int cryptof_kqfilter(struct file *, struct knote *); 103 static int cryptof_stat(struct file *, struct stat *, struct proc *); 104 static int cryptof_close(struct file *, struct proc *); 105 106 static struct fileops cryptofops = { 107 cryptof_read, 108 cryptof_write, 109 cryptof_ioctl, 110 cryptof_fcntl, 111 cryptof_poll, 112 cryptof_stat, 113 cryptof_close, 114 cryptof_kqfilter 115 }; 116 117 static struct csession *csefind(struct fcrypt *, u_int); 118 static int csedelete(struct fcrypt *, struct csession *); 119 static struct csession *cseadd(struct fcrypt *, struct csession *); 120 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t, u_int64_t, 121 caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *, 122 struct auth_hash *); 123 static int csefree(struct csession *); 124 125 static int cryptodev_op(struct csession *, struct crypt_op *, struct proc *); 126 static int cryptodev_key(struct crypt_kop *); 127 int cryptodev_dokey(struct crypt_kop *kop, struct crparam kvp[]); 128 129 static int cryptodev_cb(void *); 130 static int cryptodevkey_cb(void *); 131 132 /* 133 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 134 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 135 */ 136 137 /* ARGSUSED */ 138 int 139 cryptof_read(struct file *fp, off_t *poff, struct uio *uio, 140 struct ucred *cred, int flags) 141 { 142 return (EIO); 143 } 144 145 /* ARGSUSED */ 146 int 147 cryptof_write(struct file *fp, off_t *poff, struct uio *uio, 148 struct ucred *cred, int flags) 149 { 150 return (EIO); 151 } 152 153 /* ARGSUSED */ 154 int 155 cryptof_ioctl(struct file *fp, u_long cmd, void* data, struct proc *p) 156 { 157 struct cryptoini cria, crie; 158 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 159 struct csession *cse; 160 struct session_op *sop; 161 struct crypt_op *cop; 162 struct enc_xform *txform = NULL; 163 struct auth_hash *thash = NULL; 164 u_int64_t sid; 165 u_int32_t ses; 166 int error = 0; 167 168 switch (cmd) { 169 case CIOCGSESSION: 170 sop = (struct session_op *)data; 171 switch (sop->cipher) { 172 case 0: 173 break; 174 case CRYPTO_DES_CBC: 175 txform = &enc_xform_des; 176 break; 177 case CRYPTO_3DES_CBC: 178 txform = &enc_xform_3des; 179 break; 180 case CRYPTO_BLF_CBC: 181 txform = &enc_xform_blf; 182 break; 183 case CRYPTO_CAST_CBC: 184 txform = &enc_xform_cast5; 185 break; 186 case CRYPTO_SKIPJACK_CBC: 187 txform = &enc_xform_skipjack; 188 break; 189 case CRYPTO_AES_CBC: 190 txform = &enc_xform_rijndael128; 191 break; 192 case CRYPTO_NULL_CBC: 193 txform = &enc_xform_null; 194 break; 195 case CRYPTO_ARC4: 196 txform = &enc_xform_arc4; 197 break; 198 default: 199 return (EINVAL); 200 } 201 202 switch (sop->mac) { 203 case 0: 204 break; 205 case CRYPTO_MD5_HMAC: 206 thash = &auth_hash_hmac_md5_96; 207 break; 208 case CRYPTO_SHA1_HMAC: 209 thash = &auth_hash_hmac_sha1_96; 210 break; 211 case CRYPTO_SHA2_HMAC: 212 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) 213 thash = &auth_hash_hmac_sha2_256; 214 else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) 215 thash = &auth_hash_hmac_sha2_384; 216 else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) 217 thash = &auth_hash_hmac_sha2_512; 218 else 219 return (EINVAL); 220 break; 221 case CRYPTO_RIPEMD160_HMAC: 222 thash = &auth_hash_hmac_ripemd_160_96; 223 break; 224 case CRYPTO_MD5: 225 thash = &auth_hash_md5; 226 break; 227 case CRYPTO_SHA1: 228 thash = &auth_hash_sha1; 229 break; 230 case CRYPTO_NULL_HMAC: 231 thash = &auth_hash_null; 232 break; 233 default: 234 return (EINVAL); 235 } 236 237 bzero(&crie, sizeof(crie)); 238 bzero(&cria, sizeof(cria)); 239 240 if (txform) { 241 crie.cri_alg = txform->type; 242 crie.cri_klen = sop->keylen * 8; 243 if (sop->keylen > txform->maxkey || 244 sop->keylen < txform->minkey) { 245 error = EINVAL; 246 goto bail; 247 } 248 249 MALLOC(crie.cri_key, u_int8_t *, 250 crie.cri_klen / 8, M_XDATA, M_WAITOK); 251 if ((error = copyin(sop->key, crie.cri_key, 252 crie.cri_klen / 8))) 253 goto bail; 254 if (thash) 255 crie.cri_next = &cria; 256 } 257 258 if (thash) { 259 cria.cri_alg = thash->type; 260 cria.cri_klen = sop->mackeylen * 8; 261 if (sop->mackeylen != thash->keysize) { 262 error = EINVAL; 263 goto bail; 264 } 265 266 if (cria.cri_klen) { 267 MALLOC(cria.cri_key, u_int8_t *, 268 cria.cri_klen / 8, M_XDATA, M_WAITOK); 269 if ((error = copyin(sop->mackey, cria.cri_key, 270 cria.cri_klen / 8))) 271 goto bail; 272 } 273 } 274 275 error = crypto_newsession(&sid, (txform ? &crie : &cria), 276 crypto_devallowsoft); 277 if (error) { 278 #ifdef CRYPTO_DEBUG 279 printf("SIOCSESSION violates kernel parameters\n"); 280 #endif 281 goto bail; 282 } 283 284 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 285 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform, 286 thash); 287 288 if (cse == NULL) { 289 crypto_freesession(sid); 290 error = EINVAL; 291 goto bail; 292 } 293 sop->ses = cse->ses; 294 295 bail: 296 if (error) { 297 if (crie.cri_key) 298 FREE(crie.cri_key, M_XDATA); 299 if (cria.cri_key) 300 FREE(cria.cri_key, M_XDATA); 301 } 302 break; 303 case CIOCFSESSION: 304 ses = *(u_int32_t *)data; 305 cse = csefind(fcr, ses); 306 if (cse == NULL) 307 return (EINVAL); 308 csedelete(fcr, cse); 309 error = csefree(cse); 310 break; 311 case CIOCCRYPT: 312 cop = (struct crypt_op *)data; 313 cse = csefind(fcr, cop->ses); 314 if (cse == NULL) 315 return (EINVAL); 316 error = cryptodev_op(cse, cop, p); 317 break; 318 case CIOCKEY: 319 error = cryptodev_key((struct crypt_kop *)data); 320 break; 321 case CIOCASYMFEAT: 322 error = crypto_getfeat((int *)data); 323 break; 324 default: 325 error = EINVAL; 326 } 327 return (error); 328 } 329 330 /* ARGSUSED */ 331 int 332 cryptof_fcntl(struct file *fp, u_int cmd, void *data, struct proc *p) 333 { 334 return (0); 335 } 336 337 static int 338 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct proc *p) 339 { 340 struct cryptop *crp = NULL; 341 struct cryptodesc *crde = NULL, *crda = NULL; 342 int i, error, s; 343 344 if (cop->len > 256*1024-4) 345 return (E2BIG); 346 347 if (cse->txform && (cop->len % cse->txform->blocksize) != 0) 348 return (EINVAL); 349 350 bzero(&cse->uio, sizeof(cse->uio)); 351 cse->uio.uio_iovcnt = 1; 352 cse->uio.uio_resid = 0; 353 cse->uio.uio_segflg = UIO_SYSSPACE; 354 cse->uio.uio_rw = UIO_WRITE; 355 cse->uio.uio_procp = p; 356 cse->uio.uio_iov = cse->iovec; 357 bzero(&cse->iovec, sizeof(cse->iovec)); 358 cse->uio.uio_iov[0].iov_len = cop->len; 359 cse->uio.uio_iov[0].iov_base = malloc(cop->len, M_XDATA, M_WAITOK); 360 for (i = 0; i < cse->uio.uio_iovcnt; i++) 361 cse->uio.uio_resid += cse->uio.uio_iov[0].iov_len; 362 363 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL)); 364 if (crp == NULL) { 365 error = ENOMEM; 366 goto bail; 367 } 368 369 if (cse->thash) { 370 crda = crp->crp_desc; 371 if (cse->txform) 372 crde = crda->crd_next; 373 } else { 374 if (cse->txform) 375 crde = crp->crp_desc; 376 else { 377 error = EINVAL; 378 goto bail; 379 } 380 } 381 382 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 383 goto bail; 384 385 if (crda) { 386 crda->crd_skip = 0; 387 crda->crd_len = cop->len; 388 crda->crd_inject = 0; /* ??? */ 389 390 crda->crd_alg = cse->mac; 391 crda->crd_key = cse->mackey; 392 crda->crd_klen = cse->mackeylen * 8; 393 } 394 395 if (crde) { 396 if (cop->op == COP_ENCRYPT) 397 crde->crd_flags |= CRD_F_ENCRYPT; 398 else 399 crde->crd_flags &= ~CRD_F_ENCRYPT; 400 crde->crd_len = cop->len; 401 crde->crd_inject = 0; 402 403 crde->crd_alg = cse->cipher; 404 crde->crd_key = cse->key; 405 crde->crd_klen = cse->keylen * 8; 406 } 407 408 crp->crp_ilen = cop->len; 409 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM 410 | (cop->flags & COP_F_BATCH); 411 crp->crp_buf = (caddr_t)&cse->uio; 412 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 413 crp->crp_sid = cse->sid; 414 crp->crp_opaque = (void *)cse; 415 416 if (cop->iv) { 417 if (crde == NULL) { 418 error = EINVAL; 419 goto bail; 420 } 421 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 422 error = EINVAL; 423 goto bail; 424 } 425 if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize))) 426 goto bail; 427 bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize); 428 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 429 crde->crd_skip = 0; 430 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 431 crde->crd_skip = 0; 432 } else if (crde) { 433 crde->crd_flags |= CRD_F_IV_PRESENT; 434 crde->crd_skip = cse->txform->blocksize; 435 crde->crd_len -= cse->txform->blocksize; 436 } 437 438 if (cop->mac) { 439 if (crda == NULL) { 440 error = EINVAL; 441 goto bail; 442 } 443 crp->crp_mac=cse->tmp_mac; 444 } 445 446 s = splcrypto(); /* NB: only needed with CRYPTO_F_CBIMM */ 447 error = crypto_dispatch(crp); 448 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0) 449 error = tsleep(crp, PSOCK, "crydev", 0); 450 splx(s); 451 if (error) { 452 goto bail; 453 } 454 455 if (crp->crp_etype != 0) { 456 error = crp->crp_etype; 457 goto bail; 458 } 459 460 if (cse->error) { 461 error = cse->error; 462 goto bail; 463 } 464 465 if (cop->dst && 466 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len))) 467 goto bail; 468 469 if (cop->mac && 470 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) 471 goto bail; 472 473 bail: 474 if (crp) 475 crypto_freereq(crp); 476 if (cse->uio.uio_iov[0].iov_base) 477 free(cse->uio.uio_iov[0].iov_base, M_XDATA); 478 479 return (error); 480 } 481 482 static int 483 cryptodev_cb(void *op) 484 { 485 struct cryptop *crp = (struct cryptop *) op; 486 struct csession *cse = (struct csession *)crp->crp_opaque; 487 488 cse->error = crp->crp_etype; 489 if (crp->crp_etype == EAGAIN) 490 return crypto_dispatch(crp); 491 wakeup_one(crp); 492 return (0); 493 } 494 495 static int 496 cryptodevkey_cb(void *op) 497 { 498 struct cryptkop *krp = (struct cryptkop *) op; 499 500 wakeup_one(krp); 501 return (0); 502 } 503 504 static int 505 cryptodev_key(struct crypt_kop *kop) 506 { 507 struct cryptkop *krp = NULL; 508 int error = EINVAL; 509 int in, out, size, i; 510 511 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) { 512 return (EFBIG); 513 } 514 515 in = kop->crk_iparams; 516 out = kop->crk_oparams; 517 switch (kop->crk_op) { 518 case CRK_MOD_EXP: 519 if (in == 3 && out == 1) 520 break; 521 return (EINVAL); 522 case CRK_MOD_EXP_CRT: 523 if (in == 6 && out == 1) 524 break; 525 return (EINVAL); 526 case CRK_DSA_SIGN: 527 if (in == 5 && out == 2) 528 break; 529 return (EINVAL); 530 case CRK_DSA_VERIFY: 531 if (in == 7 && out == 0) 532 break; 533 return (EINVAL); 534 case CRK_DH_COMPUTE_KEY: 535 if (in == 3 && out == 1) 536 break; 537 return (EINVAL); 538 default: 539 return (EINVAL); 540 } 541 542 krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK); 543 if (!krp) 544 return (ENOMEM); 545 bzero(krp, sizeof *krp); 546 krp->krp_op = kop->crk_op; 547 krp->krp_status = kop->crk_status; 548 krp->krp_iparams = kop->crk_iparams; 549 krp->krp_oparams = kop->crk_oparams; 550 krp->krp_status = 0; 551 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 552 553 for (i = 0; i < CRK_MAXPARAM; i++) 554 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 555 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 556 size = (krp->krp_param[i].crp_nbits + 7) / 8; 557 if (size == 0) 558 continue; 559 MALLOC(krp->krp_param[i].crp_p, caddr_t, size, M_XDATA, M_WAITOK); 560 if (i >= krp->krp_iparams) 561 continue; 562 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size); 563 if (error) 564 goto fail; 565 } 566 567 error = crypto_kdispatch(krp); 568 if (error == 0) 569 error = tsleep(krp, PSOCK, "crydev", 0); 570 if (error) 571 goto fail; 572 573 if (krp->krp_status != 0) { 574 error = krp->krp_status; 575 goto fail; 576 } 577 578 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) { 579 size = (krp->krp_param[i].crp_nbits + 7) / 8; 580 if (size == 0) 581 continue; 582 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size); 583 if (error) 584 goto fail; 585 } 586 587 fail: 588 if (krp) { 589 kop->crk_status = krp->krp_status; 590 for (i = 0; i < CRK_MAXPARAM; i++) { 591 if (krp->krp_param[i].crp_p) 592 FREE(krp->krp_param[i].crp_p, M_XDATA); 593 } 594 free(krp, M_XDATA); 595 } 596 return (error); 597 } 598 599 /* ARGSUSED */ 600 static int 601 cryptof_poll(struct file *fp, int which, struct proc *p) 602 { 603 return (0); 604 } 605 606 607 /* ARGSUSED */ 608 static int 609 cryptof_kqfilter(struct file *fp, struct knote *kn) 610 { 611 612 return (0); 613 } 614 615 /* ARGSUSED */ 616 static int 617 cryptof_stat(struct file *fp, struct stat *sb, struct proc *p) 618 { 619 return (EOPNOTSUPP); 620 } 621 622 /* ARGSUSED */ 623 static int 624 cryptof_close(struct file *fp, struct proc *p) 625 { 626 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 627 struct csession *cse; 628 629 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 630 TAILQ_REMOVE(&fcr->csessions, cse, next); 631 (void)csefree(cse); 632 } 633 FREE(fcr, M_XDATA); 634 635 /* close() stolen from sys/kern/kern_ktrace.c */ 636 637 fp->f_data = NULL; 638 #if 0 639 FILE_UNUSE(fp, p); /* release file */ 640 fdrelease(p, fd); /* release fd table slot */ 641 #endif 642 643 return 0; 644 } 645 646 static struct csession * 647 csefind(struct fcrypt *fcr, u_int ses) 648 { 649 struct csession *cse; 650 651 TAILQ_FOREACH(cse, &fcr->csessions, next) 652 if (cse->ses == ses) 653 return (cse); 654 return (NULL); 655 } 656 657 static int 658 csedelete(struct fcrypt *fcr, struct csession *cse_del) 659 { 660 struct csession *cse; 661 662 TAILQ_FOREACH(cse, &fcr->csessions, next) { 663 if (cse == cse_del) { 664 TAILQ_REMOVE(&fcr->csessions, cse, next); 665 return (1); 666 } 667 } 668 return (0); 669 } 670 671 static struct csession * 672 cseadd(struct fcrypt *fcr, struct csession *cse) 673 { 674 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 675 cse->ses = fcr->sesn++; 676 return (cse); 677 } 678 679 static struct csession * 680 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen, 681 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 682 struct enc_xform *txform, struct auth_hash *thash) 683 { 684 struct csession *cse; 685 686 MALLOC(cse, struct csession *, sizeof(struct csession), 687 M_XDATA, M_NOWAIT); 688 if (cse == NULL) 689 return NULL; 690 cse->key = key; 691 cse->keylen = keylen/8; 692 cse->mackey = mackey; 693 cse->mackeylen = mackeylen/8; 694 cse->sid = sid; 695 cse->cipher = cipher; 696 cse->mac = mac; 697 cse->txform = txform; 698 cse->thash = thash; 699 cseadd(fcr, cse); 700 return (cse); 701 } 702 703 static int 704 csefree(struct csession *cse) 705 { 706 int error; 707 708 error = crypto_freesession(cse->sid); 709 if (cse->key) 710 FREE(cse->key, M_XDATA); 711 if (cse->mackey) 712 FREE(cse->mackey, M_XDATA); 713 FREE(cse, M_XDATA); 714 return (error); 715 } 716 717 static int 718 cryptoopen(dev_t dev, int flag, int mode, struct proc *p) 719 { 720 if (crypto_usercrypto == 0) 721 return (ENXIO); 722 return (0); 723 } 724 725 static int 726 cryptoread(dev_t dev, struct uio *uio, int ioflag) 727 { 728 return (EIO); 729 } 730 731 static int 732 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 733 { 734 return (EIO); 735 } 736 737 static int 738 cryptoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 739 { 740 struct file *f; 741 struct fcrypt *fcr; 742 int fd, error; 743 744 switch (cmd) { 745 case CRIOGET: 746 MALLOC(fcr, struct fcrypt *, 747 sizeof(struct fcrypt), M_XDATA, M_WAITOK); 748 TAILQ_INIT(&fcr->csessions); 749 fcr->sesn = 0; 750 751 error = falloc(p, &f, &fd); 752 if (error) { 753 FREE(fcr, M_XDATA); 754 return (error); 755 } 756 f->f_flag = FREAD | FWRITE; 757 f->f_type = DTYPE_CRYPTO; 758 f->f_ops = &cryptofops; 759 f->f_data = (caddr_t) fcr; 760 *(u_int32_t *)data = fd; 761 FILE_SET_MATURE(f); 762 FILE_UNUSE(f, p); 763 break; 764 default: 765 error = EINVAL; 766 break; 767 } 768 return (error); 769 } 770 771 int 772 cryptoselect(dev_t dev, int rw, struct proc *p) 773 { 774 return (0); 775 } 776 777 /*static*/ 778 struct cdevsw crypto_cdevsw = { 779 /* open */ cryptoopen, 780 /* close */ nullclose, 781 /* read */ cryptoread, 782 /* write */ cryptowrite, 783 /* ioctl */ cryptoioctl, 784 /* ttstop?*/ nostop, 785 /* ??*/ notty, 786 /* poll */ cryptoselect /*nopoll*/, 787 /* mmap */ nommap, 788 /* kqfilter */ nokqfilter, 789 }; 790
Cache object: 6912297fc12f4fbf19c8fc1e7bb271d9
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