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Fix registration issue in the devfs rc script.
[dragonfly.git] / sys / opencrypto / cryptodev.c
blob2384f9d4cf7bde743aad5f18ee9cdc98238220b3
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
DragonFly BSD