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
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