1 /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */
2
3 /*-
4 * Copyright (c) 2001 Theo de Raadt
5 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
6 * Copyright (c) 2014 The FreeBSD Foundation
7 * All rights reserved.
8 *
9 * Portions of this software were developed by John-Mark Gurney
10 * under sponsorship of the FreeBSD Foundation and
11 * Rubicon Communications, LLC (Netgate).
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Effort sponsored in part by the Defense Advanced Research Projects
37 * Agency (DARPA) and Air Force Research Laboratory, Air Force
38 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
39 */
40
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD: releng/11.2/sys/opencrypto/cryptodev.c 330129 2018-02-28 21:41:52Z jhb $");
43
44 #include "opt_compat.h"
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/malloc.h>
49 #include <sys/mbuf.h>
50 #include <sys/lock.h>
51 #include <sys/mutex.h>
52 #include <sys/sysctl.h>
53 #include <sys/file.h>
54 #include <sys/filedesc.h>
55 #include <sys/errno.h>
56 #include <sys/uio.h>
57 #include <sys/random.h>
58 #include <sys/conf.h>
59 #include <sys/kernel.h>
60 #include <sys/module.h>
61 #include <sys/fcntl.h>
62 #include <sys/bus.h>
63 #include <sys/user.h>
64 #include <sys/sdt.h>
65
66 #include <opencrypto/cryptodev.h>
67 #include <opencrypto/xform.h>
68
69 SDT_PROVIDER_DECLARE(opencrypto);
70
71 SDT_PROBE_DEFINE1(opencrypto, dev, ioctl, error, "int"/*line number*/);
72
73 #ifdef COMPAT_FREEBSD32
74 #include <sys/mount.h>
75 #include <compat/freebsd32/freebsd32.h>
76
77 struct session_op32 {
78 u_int32_t cipher;
79 u_int32_t mac;
80 u_int32_t keylen;
81 u_int32_t key;
82 int mackeylen;
83 u_int32_t mackey;
84 u_int32_t ses;
85 };
86
87 struct session2_op32 {
88 u_int32_t cipher;
89 u_int32_t mac;
90 u_int32_t keylen;
91 u_int32_t key;
92 int mackeylen;
93 u_int32_t mackey;
94 u_int32_t ses;
95 int crid;
96 int pad[4];
97 };
98
99 struct crypt_op32 {
100 u_int32_t ses;
101 u_int16_t op;
102 u_int16_t flags;
103 u_int len;
104 u_int32_t src, dst;
105 u_int32_t mac;
106 u_int32_t iv;
107 };
108
109 struct crparam32 {
110 u_int32_t crp_p;
111 u_int crp_nbits;
112 };
113
114 struct crypt_kop32 {
115 u_int crk_op;
116 u_int crk_status;
117 u_short crk_iparams;
118 u_short crk_oparams;
119 u_int crk_crid;
120 struct crparam32 crk_param[CRK_MAXPARAM];
121 };
122
123 struct cryptotstat32 {
124 struct timespec32 acc;
125 struct timespec32 min;
126 struct timespec32 max;
127 u_int32_t count;
128 };
129
130 struct cryptostats32 {
131 u_int32_t cs_ops;
132 u_int32_t cs_errs;
133 u_int32_t cs_kops;
134 u_int32_t cs_kerrs;
135 u_int32_t cs_intrs;
136 u_int32_t cs_rets;
137 u_int32_t cs_blocks;
138 u_int32_t cs_kblocks;
139 struct cryptotstat32 cs_invoke;
140 struct cryptotstat32 cs_done;
141 struct cryptotstat32 cs_cb;
142 struct cryptotstat32 cs_finis;
143 };
144
145 #define CIOCGSESSION32 _IOWR('c', 101, struct session_op32)
146 #define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32)
147 #define CIOCKEY32 _IOWR('c', 104, struct crypt_kop32)
148 #define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32)
149 #define CIOCKEY232 _IOWR('c', 107, struct crypt_kop32)
150
151 static void
152 session_op_from_32(const struct session_op32 *from, struct session_op *to)
153 {
154
155 CP(*from, *to, cipher);
156 CP(*from, *to, mac);
157 CP(*from, *to, keylen);
158 PTRIN_CP(*from, *to, key);
159 CP(*from, *to, mackeylen);
160 PTRIN_CP(*from, *to, mackey);
161 CP(*from, *to, ses);
162 }
163
164 static void
165 session2_op_from_32(const struct session2_op32 *from, struct session2_op *to)
166 {
167
168 session_op_from_32((const struct session_op32 *)from,
169 (struct session_op *)to);
170 CP(*from, *to, crid);
171 }
172
173 static void
174 session_op_to_32(const struct session_op *from, struct session_op32 *to)
175 {
176
177 CP(*from, *to, cipher);
178 CP(*from, *to, mac);
179 CP(*from, *to, keylen);
180 PTROUT_CP(*from, *to, key);
181 CP(*from, *to, mackeylen);
182 PTROUT_CP(*from, *to, mackey);
183 CP(*from, *to, ses);
184 }
185
186 static void
187 session2_op_to_32(const struct session2_op *from, struct session2_op32 *to)
188 {
189
190 session_op_to_32((const struct session_op *)from,
191 (struct session_op32 *)to);
192 CP(*from, *to, crid);
193 }
194
195 static void
196 crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to)
197 {
198
199 CP(*from, *to, ses);
200 CP(*from, *to, op);
201 CP(*from, *to, flags);
202 CP(*from, *to, len);
203 PTRIN_CP(*from, *to, src);
204 PTRIN_CP(*from, *to, dst);
205 PTRIN_CP(*from, *to, mac);
206 PTRIN_CP(*from, *to, iv);
207 }
208
209 static void
210 crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to)
211 {
212
213 CP(*from, *to, ses);
214 CP(*from, *to, op);
215 CP(*from, *to, flags);
216 CP(*from, *to, len);
217 PTROUT_CP(*from, *to, src);
218 PTROUT_CP(*from, *to, dst);
219 PTROUT_CP(*from, *to, mac);
220 PTROUT_CP(*from, *to, iv);
221 }
222
223 static void
224 crparam_from_32(const struct crparam32 *from, struct crparam *to)
225 {
226
227 PTRIN_CP(*from, *to, crp_p);
228 CP(*from, *to, crp_nbits);
229 }
230
231 static void
232 crparam_to_32(const struct crparam *from, struct crparam32 *to)
233 {
234
235 PTROUT_CP(*from, *to, crp_p);
236 CP(*from, *to, crp_nbits);
237 }
238
239 static void
240 crypt_kop_from_32(const struct crypt_kop32 *from, struct crypt_kop *to)
241 {
242 int i;
243
244 CP(*from, *to, crk_op);
245 CP(*from, *to, crk_status);
246 CP(*from, *to, crk_iparams);
247 CP(*from, *to, crk_oparams);
248 CP(*from, *to, crk_crid);
249 for (i = 0; i < CRK_MAXPARAM; i++)
250 crparam_from_32(&from->crk_param[i], &to->crk_param[i]);
251 }
252
253 static void
254 crypt_kop_to_32(const struct crypt_kop *from, struct crypt_kop32 *to)
255 {
256 int i;
257
258 CP(*from, *to, crk_op);
259 CP(*from, *to, crk_status);
260 CP(*from, *to, crk_iparams);
261 CP(*from, *to, crk_oparams);
262 CP(*from, *to, crk_crid);
263 for (i = 0; i < CRK_MAXPARAM; i++)
264 crparam_to_32(&from->crk_param[i], &to->crk_param[i]);
265 }
266 #endif
267
268 struct csession {
269 TAILQ_ENTRY(csession) next;
270 u_int64_t sid;
271 u_int32_t ses;
272 struct mtx lock; /* for op submission */
273
274 u_int32_t cipher;
275 struct enc_xform *txform;
276 u_int32_t mac;
277 struct auth_hash *thash;
278
279 caddr_t key;
280 int keylen;
281
282 caddr_t mackey;
283 int mackeylen;
284
285 struct iovec iovec;
286 struct uio uio;
287 int error;
288 };
289
290 struct fcrypt {
291 TAILQ_HEAD(csessionlist, csession) csessions;
292 int sesn;
293 };
294
295 static int cryptof_ioctl(struct file *, u_long, void *,
296 struct ucred *, struct thread *);
297 static int cryptof_stat(struct file *, struct stat *,
298 struct ucred *, struct thread *);
299 static int cryptof_close(struct file *, struct thread *);
300 static int cryptof_fill_kinfo(struct file *, struct kinfo_file *,
301 struct filedesc *);
302
303 static struct fileops cryptofops = {
304 .fo_read = invfo_rdwr,
305 .fo_write = invfo_rdwr,
306 .fo_truncate = invfo_truncate,
307 .fo_ioctl = cryptof_ioctl,
308 .fo_poll = invfo_poll,
309 .fo_kqfilter = invfo_kqfilter,
310 .fo_stat = cryptof_stat,
311 .fo_close = cryptof_close,
312 .fo_chmod = invfo_chmod,
313 .fo_chown = invfo_chown,
314 .fo_sendfile = invfo_sendfile,
315 .fo_fill_kinfo = cryptof_fill_kinfo,
316 };
317
318 static struct csession *csefind(struct fcrypt *, u_int);
319 static int csedelete(struct fcrypt *, struct csession *);
320 static struct csession *cseadd(struct fcrypt *, struct csession *);
321 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t,
322 u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *,
323 struct auth_hash *);
324 static int csefree(struct csession *);
325
326 static int cryptodev_op(struct csession *, struct crypt_op *,
327 struct ucred *, struct thread *td);
328 static int cryptodev_aead(struct csession *, struct crypt_aead *,
329 struct ucred *, struct thread *);
330 static int cryptodev_key(struct crypt_kop *);
331 static int cryptodev_find(struct crypt_find_op *);
332
333 /*
334 * Check a crypto identifier to see if it requested
335 * a software device/driver. This can be done either
336 * by device name/class or through search constraints.
337 */
338 static int
339 checkforsoftware(int *cridp)
340 {
341 int crid;
342
343 crid = *cridp;
344
345 if (!crypto_devallowsoft) {
346 if (crid & CRYPTOCAP_F_SOFTWARE) {
347 if (crid & CRYPTOCAP_F_HARDWARE) {
348 *cridp = CRYPTOCAP_F_HARDWARE;
349 return 0;
350 }
351 return EINVAL;
352 }
353 if ((crid & CRYPTOCAP_F_HARDWARE) == 0 &&
354 (crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0)
355 return EINVAL;
356 }
357 return 0;
358 }
359
360 /* ARGSUSED */
361 static int
362 cryptof_ioctl(
363 struct file *fp,
364 u_long cmd,
365 void *data,
366 struct ucred *active_cred,
367 struct thread *td)
368 {
369 #define SES2(p) ((struct session2_op *)p)
370 struct cryptoini cria, crie;
371 struct fcrypt *fcr = fp->f_data;
372 struct csession *cse;
373 struct session_op *sop;
374 struct crypt_op *cop;
375 struct crypt_aead *caead;
376 struct enc_xform *txform = NULL;
377 struct auth_hash *thash = NULL;
378 struct crypt_kop *kop;
379 u_int64_t sid;
380 u_int32_t ses;
381 int error = 0, crid;
382 #ifdef COMPAT_FREEBSD32
383 struct session2_op sopc;
384 struct crypt_op copc;
385 struct crypt_kop kopc;
386 #endif
387
388 switch (cmd) {
389 case CIOCGSESSION:
390 case CIOCGSESSION2:
391 #ifdef COMPAT_FREEBSD32
392 case CIOCGSESSION32:
393 case CIOCGSESSION232:
394 if (cmd == CIOCGSESSION32) {
395 session_op_from_32(data, (struct session_op *)&sopc);
396 sop = (struct session_op *)&sopc;
397 } else if (cmd == CIOCGSESSION232) {
398 session2_op_from_32(data, &sopc);
399 sop = (struct session_op *)&sopc;
400 } else
401 #endif
402 sop = (struct session_op *)data;
403 switch (sop->cipher) {
404 case 0:
405 break;
406 case CRYPTO_DES_CBC:
407 txform = &enc_xform_des;
408 break;
409 case CRYPTO_3DES_CBC:
410 txform = &enc_xform_3des;
411 break;
412 case CRYPTO_BLF_CBC:
413 txform = &enc_xform_blf;
414 break;
415 case CRYPTO_CAST_CBC:
416 txform = &enc_xform_cast5;
417 break;
418 case CRYPTO_SKIPJACK_CBC:
419 txform = &enc_xform_skipjack;
420 break;
421 case CRYPTO_AES_CBC:
422 txform = &enc_xform_rijndael128;
423 break;
424 case CRYPTO_AES_XTS:
425 txform = &enc_xform_aes_xts;
426 break;
427 case CRYPTO_NULL_CBC:
428 txform = &enc_xform_null;
429 break;
430 case CRYPTO_ARC4:
431 txform = &enc_xform_arc4;
432 break;
433 case CRYPTO_CAMELLIA_CBC:
434 txform = &enc_xform_camellia;
435 break;
436 case CRYPTO_AES_ICM:
437 txform = &enc_xform_aes_icm;
438 break;
439 case CRYPTO_AES_NIST_GCM_16:
440 txform = &enc_xform_aes_nist_gcm;
441 break;
442
443 default:
444 CRYPTDEB("invalid cipher");
445 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
446 return (EINVAL);
447 }
448
449 switch (sop->mac) {
450 case 0:
451 break;
452 case CRYPTO_MD5_HMAC:
453 thash = &auth_hash_hmac_md5;
454 break;
455 case CRYPTO_SHA1_HMAC:
456 thash = &auth_hash_hmac_sha1;
457 break;
458 case CRYPTO_SHA2_256_HMAC:
459 thash = &auth_hash_hmac_sha2_256;
460 break;
461 case CRYPTO_SHA2_384_HMAC:
462 thash = &auth_hash_hmac_sha2_384;
463 break;
464 case CRYPTO_SHA2_512_HMAC:
465 thash = &auth_hash_hmac_sha2_512;
466 break;
467 case CRYPTO_RIPEMD160_HMAC:
468 thash = &auth_hash_hmac_ripemd_160;
469 break;
470 case CRYPTO_AES_128_NIST_GMAC:
471 thash = &auth_hash_nist_gmac_aes_128;
472 break;
473 case CRYPTO_AES_192_NIST_GMAC:
474 thash = &auth_hash_nist_gmac_aes_192;
475 break;
476 case CRYPTO_AES_256_NIST_GMAC:
477 thash = &auth_hash_nist_gmac_aes_256;
478 break;
479
480 #ifdef notdef
481 case CRYPTO_MD5:
482 thash = &auth_hash_md5;
483 break;
484 case CRYPTO_SHA1:
485 thash = &auth_hash_sha1;
486 break;
487 #endif
488 case CRYPTO_NULL_HMAC:
489 thash = &auth_hash_null;
490 break;
491 default:
492 CRYPTDEB("invalid mac");
493 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
494 return (EINVAL);
495 }
496
497 bzero(&crie, sizeof(crie));
498 bzero(&cria, sizeof(cria));
499
500 if (txform) {
501 crie.cri_alg = txform->type;
502 crie.cri_klen = sop->keylen * 8;
503 if (sop->keylen > txform->maxkey ||
504 sop->keylen < txform->minkey) {
505 CRYPTDEB("invalid cipher parameters");
506 error = EINVAL;
507 SDT_PROBE1(opencrypto, dev, ioctl, error,
508 __LINE__);
509 goto bail;
510 }
511
512 crie.cri_key = malloc(crie.cri_klen / 8,
513 M_XDATA, M_WAITOK);
514 if ((error = copyin(sop->key, crie.cri_key,
515 crie.cri_klen / 8))) {
516 CRYPTDEB("invalid key");
517 SDT_PROBE1(opencrypto, dev, ioctl, error,
518 __LINE__);
519 goto bail;
520 }
521 if (thash)
522 crie.cri_next = &cria;
523 }
524
525 if (thash) {
526 cria.cri_alg = thash->type;
527 cria.cri_klen = sop->mackeylen * 8;
528 if (sop->mackeylen != thash->keysize) {
529 CRYPTDEB("invalid mac key length");
530 error = EINVAL;
531 SDT_PROBE1(opencrypto, dev, ioctl, error,
532 __LINE__);
533 goto bail;
534 }
535
536 if (cria.cri_klen) {
537 cria.cri_key = malloc(cria.cri_klen / 8,
538 M_XDATA, M_WAITOK);
539 if ((error = copyin(sop->mackey, cria.cri_key,
540 cria.cri_klen / 8))) {
541 CRYPTDEB("invalid mac key");
542 SDT_PROBE1(opencrypto, dev, ioctl,
543 error, __LINE__);
544 goto bail;
545 }
546 }
547 }
548
549 /* NB: CIOCGSESSION2 has the crid */
550 if (cmd == CIOCGSESSION2
551 #ifdef COMPAT_FREEBSD32
552 || cmd == CIOCGSESSION232
553 #endif
554 ) {
555 crid = SES2(sop)->crid;
556 error = checkforsoftware(&crid);
557 if (error) {
558 CRYPTDEB("checkforsoftware");
559 SDT_PROBE1(opencrypto, dev, ioctl, error,
560 __LINE__);
561 goto bail;
562 }
563 } else
564 crid = CRYPTOCAP_F_HARDWARE;
565 error = crypto_newsession(&sid, (txform ? &crie : &cria), crid);
566 if (error) {
567 CRYPTDEB("crypto_newsession");
568 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
569 goto bail;
570 }
571
572 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen,
573 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform,
574 thash);
575
576 if (cse == NULL) {
577 crypto_freesession(sid);
578 error = EINVAL;
579 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
580 CRYPTDEB("csecreate");
581 goto bail;
582 }
583 sop->ses = cse->ses;
584 if (cmd == CIOCGSESSION2
585 #ifdef COMPAT_FREEBSD32
586 || cmd == CIOCGSESSION232
587 #endif
588 ) {
589 /* return hardware/driver id */
590 SES2(sop)->crid = CRYPTO_SESID2HID(cse->sid);
591 }
592 bail:
593 if (error) {
594 if (crie.cri_key)
595 free(crie.cri_key, M_XDATA);
596 if (cria.cri_key)
597 free(cria.cri_key, M_XDATA);
598 }
599 #ifdef COMPAT_FREEBSD32
600 else {
601 if (cmd == CIOCGSESSION32)
602 session_op_to_32(sop, data);
603 else if (cmd == CIOCGSESSION232)
604 session2_op_to_32((struct session2_op *)sop,
605 data);
606 }
607 #endif
608 break;
609 case CIOCFSESSION:
610 ses = *(u_int32_t *)data;
611 cse = csefind(fcr, ses);
612 if (cse == NULL) {
613 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
614 return (EINVAL);
615 }
616 csedelete(fcr, cse);
617 error = csefree(cse);
618 break;
619 case CIOCCRYPT:
620 #ifdef COMPAT_FREEBSD32
621 case CIOCCRYPT32:
622 if (cmd == CIOCCRYPT32) {
623 cop = &copc;
624 crypt_op_from_32(data, cop);
625 } else
626 #endif
627 cop = (struct crypt_op *)data;
628 cse = csefind(fcr, cop->ses);
629 if (cse == NULL) {
630 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
631 return (EINVAL);
632 }
633 error = cryptodev_op(cse, cop, active_cred, td);
634 #ifdef COMPAT_FREEBSD32
635 if (error == 0 && cmd == CIOCCRYPT32)
636 crypt_op_to_32(cop, data);
637 #endif
638 break;
639 case CIOCKEY:
640 case CIOCKEY2:
641 #ifdef COMPAT_FREEBSD32
642 case CIOCKEY32:
643 case CIOCKEY232:
644 #endif
645 if (!crypto_userasymcrypto) {
646 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
647 return (EPERM); /* XXX compat? */
648 }
649 #ifdef COMPAT_FREEBSD32
650 if (cmd == CIOCKEY32 || cmd == CIOCKEY232) {
651 kop = &kopc;
652 crypt_kop_from_32(data, kop);
653 } else
654 #endif
655 kop = (struct crypt_kop *)data;
656 if (cmd == CIOCKEY
657 #ifdef COMPAT_FREEBSD32
658 || cmd == CIOCKEY32
659 #endif
660 ) {
661 /* NB: crypto core enforces s/w driver use */
662 kop->crk_crid =
663 CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
664 }
665 mtx_lock(&Giant);
666 error = cryptodev_key(kop);
667 mtx_unlock(&Giant);
668 #ifdef COMPAT_FREEBSD32
669 if (cmd == CIOCKEY32 || cmd == CIOCKEY232)
670 crypt_kop_to_32(kop, data);
671 #endif
672 break;
673 case CIOCASYMFEAT:
674 if (!crypto_userasymcrypto) {
675 /*
676 * NB: if user asym crypto operations are
677 * not permitted return "no algorithms"
678 * so well-behaved applications will just
679 * fallback to doing them in software.
680 */
681 *(int *)data = 0;
682 } else {
683 error = crypto_getfeat((int *)data);
684 if (error)
685 SDT_PROBE1(opencrypto, dev, ioctl, error,
686 __LINE__);
687 }
688 break;
689 case CIOCFINDDEV:
690 error = cryptodev_find((struct crypt_find_op *)data);
691 break;
692 case CIOCCRYPTAEAD:
693 caead = (struct crypt_aead *)data;
694 cse = csefind(fcr, caead->ses);
695 if (cse == NULL) {
696 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
697 return (EINVAL);
698 }
699 error = cryptodev_aead(cse, caead, active_cred, td);
700 break;
701 default:
702 error = EINVAL;
703 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
704 break;
705 }
706 return (error);
707 #undef SES2
708 }
709
710 static int cryptodev_cb(void *);
711
712
713 static int
714 cryptodev_op(
715 struct csession *cse,
716 struct crypt_op *cop,
717 struct ucred *active_cred,
718 struct thread *td)
719 {
720 struct cryptop *crp = NULL;
721 struct cryptodesc *crde = NULL, *crda = NULL;
722 int error;
723
724 if (cop->len > 256*1024-4) {
725 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
726 return (E2BIG);
727 }
728
729 if (cse->txform) {
730 if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0) {
731 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
732 return (EINVAL);
733 }
734 }
735
736 cse->uio.uio_iov = &cse->iovec;
737 cse->uio.uio_iovcnt = 1;
738 cse->uio.uio_offset = 0;
739 cse->uio.uio_resid = cop->len;
740 cse->uio.uio_segflg = UIO_SYSSPACE;
741 cse->uio.uio_rw = UIO_WRITE;
742 cse->uio.uio_td = td;
743 cse->uio.uio_iov[0].iov_len = cop->len;
744 if (cse->thash) {
745 cse->uio.uio_iov[0].iov_len += cse->thash->hashsize;
746 cse->uio.uio_resid += cse->thash->hashsize;
747 }
748 cse->uio.uio_iov[0].iov_base = malloc(cse->uio.uio_iov[0].iov_len,
749 M_XDATA, M_WAITOK);
750
751 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL));
752 if (crp == NULL) {
753 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
754 error = ENOMEM;
755 goto bail;
756 }
757
758 if (cse->thash) {
759 crda = crp->crp_desc;
760 if (cse->txform)
761 crde = crda->crd_next;
762 } else {
763 if (cse->txform)
764 crde = crp->crp_desc;
765 else {
766 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
767 error = EINVAL;
768 goto bail;
769 }
770 }
771
772 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base,
773 cop->len))) {
774 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
775 goto bail;
776 }
777
778 if (crda) {
779 crda->crd_skip = 0;
780 crda->crd_len = cop->len;
781 crda->crd_inject = cop->len;
782
783 crda->crd_alg = cse->mac;
784 crda->crd_key = cse->mackey;
785 crda->crd_klen = cse->mackeylen * 8;
786 }
787
788 if (crde) {
789 if (cop->op == COP_ENCRYPT)
790 crde->crd_flags |= CRD_F_ENCRYPT;
791 else
792 crde->crd_flags &= ~CRD_F_ENCRYPT;
793 crde->crd_len = cop->len;
794 crde->crd_inject = 0;
795
796 crde->crd_alg = cse->cipher;
797 crde->crd_key = cse->key;
798 crde->crd_klen = cse->keylen * 8;
799 }
800
801 crp->crp_ilen = cop->len;
802 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
803 | (cop->flags & COP_F_BATCH);
804 crp->crp_buf = (caddr_t)&cse->uio;
805 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb;
806 crp->crp_sid = cse->sid;
807 crp->crp_opaque = (void *)cse;
808
809 if (cop->iv) {
810 if (crde == NULL) {
811 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
812 error = EINVAL;
813 goto bail;
814 }
815 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
816 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
817 error = EINVAL;
818 goto bail;
819 }
820 if ((error = copyin(cop->iv, crde->crd_iv,
821 cse->txform->blocksize))) {
822 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
823 goto bail;
824 }
825 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
826 crde->crd_skip = 0;
827 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
828 crde->crd_skip = 0;
829 } else if (crde) {
830 crde->crd_flags |= CRD_F_IV_PRESENT;
831 crde->crd_skip = cse->txform->blocksize;
832 crde->crd_len -= cse->txform->blocksize;
833 }
834
835 if (cop->mac && crda == NULL) {
836 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
837 error = EINVAL;
838 goto bail;
839 }
840
841 again:
842 /*
843 * Let the dispatch run unlocked, then, interlock against the
844 * callback before checking if the operation completed and going
845 * to sleep. This insures drivers don't inherit our lock which
846 * results in a lock order reversal between crypto_dispatch forced
847 * entry and the crypto_done callback into us.
848 */
849 error = crypto_dispatch(crp);
850 mtx_lock(&cse->lock);
851 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0)
852 error = msleep(crp, &cse->lock, PWAIT, "crydev", 0);
853 mtx_unlock(&cse->lock);
854
855 if (error != 0) {
856 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
857 goto bail;
858 }
859
860 if (crp->crp_etype == EAGAIN) {
861 crp->crp_etype = 0;
862 crp->crp_flags &= ~CRYPTO_F_DONE;
863 goto again;
864 }
865
866 if (crp->crp_etype != 0) {
867 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
868 error = crp->crp_etype;
869 goto bail;
870 }
871
872 if (cse->error) {
873 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
874 error = cse->error;
875 goto bail;
876 }
877
878 if (cop->dst &&
879 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst,
880 cop->len))) {
881 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
882 goto bail;
883 }
884
885 if (cop->mac &&
886 (error = copyout((caddr_t)cse->uio.uio_iov[0].iov_base + cop->len,
887 cop->mac, cse->thash->hashsize))) {
888 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
889 goto bail;
890 }
891
892 bail:
893 if (crp)
894 crypto_freereq(crp);
895 if (cse->uio.uio_iov[0].iov_base)
896 free(cse->uio.uio_iov[0].iov_base, M_XDATA);
897
898 return (error);
899 }
900
901 static int
902 cryptodev_aead(
903 struct csession *cse,
904 struct crypt_aead *caead,
905 struct ucred *active_cred,
906 struct thread *td)
907 {
908 struct uio *uio;
909 struct cryptop *crp = NULL;
910 struct cryptodesc *crde = NULL, *crda = NULL;
911 int error;
912
913 if (caead->len > 256*1024-4 || caead->aadlen > 256*1024-4) {
914 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
915 return (E2BIG);
916 }
917
918 if (cse->txform == NULL || cse->thash == NULL || caead->tag == NULL ||
919 (caead->len % cse->txform->blocksize) != 0) {
920 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
921 return (EINVAL);
922 }
923
924 uio = &cse->uio;
925 uio->uio_iov = &cse->iovec;
926 uio->uio_iovcnt = 1;
927 uio->uio_offset = 0;
928 uio->uio_resid = caead->aadlen + caead->len + cse->thash->hashsize;
929 uio->uio_segflg = UIO_SYSSPACE;
930 uio->uio_rw = UIO_WRITE;
931 uio->uio_td = td;
932 uio->uio_iov[0].iov_len = uio->uio_resid;
933
934 uio->uio_iov[0].iov_base = malloc(uio->uio_iov[0].iov_len,
935 M_XDATA, M_WAITOK);
936
937 crp = crypto_getreq(2);
938 if (crp == NULL) {
939 error = ENOMEM;
940 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
941 goto bail;
942 }
943
944 crda = crp->crp_desc;
945 crde = crda->crd_next;
946
947 if ((error = copyin(caead->aad, cse->uio.uio_iov[0].iov_base,
948 caead->aadlen))) {
949 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
950 goto bail;
951 }
952
953 if ((error = copyin(caead->src, (char *)cse->uio.uio_iov[0].iov_base +
954 caead->aadlen, caead->len))) {
955 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
956 goto bail;
957 }
958
959 crda->crd_skip = 0;
960 crda->crd_len = caead->aadlen;
961 crda->crd_inject = caead->aadlen + caead->len;
962
963 crda->crd_alg = cse->mac;
964 crda->crd_key = cse->mackey;
965 crda->crd_klen = cse->mackeylen * 8;
966
967 if (caead->op == COP_ENCRYPT)
968 crde->crd_flags |= CRD_F_ENCRYPT;
969 else
970 crde->crd_flags &= ~CRD_F_ENCRYPT;
971 crde->crd_skip = caead->aadlen;
972 crde->crd_len = caead->len;
973 crde->crd_inject = caead->aadlen;
974
975 crde->crd_alg = cse->cipher;
976 crde->crd_key = cse->key;
977 crde->crd_klen = cse->keylen * 8;
978
979 crp->crp_ilen = caead->aadlen + caead->len;
980 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
981 | (caead->flags & COP_F_BATCH);
982 crp->crp_buf = (caddr_t)&cse->uio.uio_iov;
983 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb;
984 crp->crp_sid = cse->sid;
985 crp->crp_opaque = (void *)cse;
986
987 if (caead->iv) {
988 if (caead->ivlen > sizeof(crde->crd_iv)) {
989 error = EINVAL;
990 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
991 goto bail;
992 }
993
994 if ((error = copyin(caead->iv, crde->crd_iv, caead->ivlen))) {
995 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
996 goto bail;
997 }
998 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
999 } else {
1000 crde->crd_flags |= CRD_F_IV_PRESENT;
1001 crde->crd_skip += cse->txform->blocksize;
1002 crde->crd_len -= cse->txform->blocksize;
1003 }
1004
1005 if ((error = copyin(caead->tag, (caddr_t)cse->uio.uio_iov[0].iov_base +
1006 caead->len + caead->aadlen, cse->thash->hashsize))) {
1007 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1008 goto bail;
1009 }
1010 again:
1011 /*
1012 * Let the dispatch run unlocked, then, interlock against the
1013 * callback before checking if the operation completed and going
1014 * to sleep. This insures drivers don't inherit our lock which
1015 * results in a lock order reversal between crypto_dispatch forced
1016 * entry and the crypto_done callback into us.
1017 */
1018 error = crypto_dispatch(crp);
1019 mtx_lock(&cse->lock);
1020 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0)
1021 error = msleep(crp, &cse->lock, PWAIT, "crydev", 0);
1022 mtx_unlock(&cse->lock);
1023
1024 if (error != 0) {
1025 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1026 goto bail;
1027 }
1028
1029 if (crp->crp_etype == EAGAIN) {
1030 crp->crp_etype = 0;
1031 crp->crp_flags &= ~CRYPTO_F_DONE;
1032 goto again;
1033 }
1034
1035 if (crp->crp_etype != 0) {
1036 error = crp->crp_etype;
1037 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1038 goto bail;
1039 }
1040
1041 if (cse->error) {
1042 error = cse->error;
1043 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1044 goto bail;
1045 }
1046
1047 if (caead->dst && (error = copyout(
1048 (caddr_t)cse->uio.uio_iov[0].iov_base + caead->aadlen, caead->dst,
1049 caead->len))) {
1050 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1051 goto bail;
1052 }
1053
1054 if ((error = copyout((caddr_t)cse->uio.uio_iov[0].iov_base +
1055 caead->aadlen + caead->len, caead->tag, cse->thash->hashsize))) {
1056 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1057 goto bail;
1058 }
1059
1060 bail:
1061 crypto_freereq(crp);
1062 free(cse->uio.uio_iov[0].iov_base, M_XDATA);
1063
1064 return (error);
1065 }
1066
1067 static int
1068 cryptodev_cb(void *op)
1069 {
1070 struct cryptop *crp = (struct cryptop *) op;
1071 struct csession *cse = (struct csession *)crp->crp_opaque;
1072
1073 mtx_lock(&cse->lock);
1074 cse->error = crp->crp_etype;
1075 wakeup_one(crp);
1076 mtx_unlock(&cse->lock);
1077 return (0);
1078 }
1079
1080 static int
1081 cryptodevkey_cb(void *op)
1082 {
1083 struct cryptkop *krp = (struct cryptkop *) op;
1084
1085 wakeup_one(krp);
1086 return (0);
1087 }
1088
1089 static int
1090 cryptodev_key(struct crypt_kop *kop)
1091 {
1092 struct cryptkop *krp = NULL;
1093 int error = EINVAL;
1094 int in, out, size, i;
1095
1096 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) {
1097 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1098 return (EFBIG);
1099 }
1100
1101 in = kop->crk_iparams;
1102 out = kop->crk_oparams;
1103 switch (kop->crk_op) {
1104 case CRK_MOD_EXP:
1105 if (in == 3 && out == 1)
1106 break;
1107 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1108 return (EINVAL);
1109 case CRK_MOD_EXP_CRT:
1110 if (in == 6 && out == 1)
1111 break;
1112 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1113 return (EINVAL);
1114 case CRK_DSA_SIGN:
1115 if (in == 5 && out == 2)
1116 break;
1117 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1118 return (EINVAL);
1119 case CRK_DSA_VERIFY:
1120 if (in == 7 && out == 0)
1121 break;
1122 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1123 return (EINVAL);
1124 case CRK_DH_COMPUTE_KEY:
1125 if (in == 3 && out == 1)
1126 break;
1127 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1128 return (EINVAL);
1129 default:
1130 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1131 return (EINVAL);
1132 }
1133
1134 krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK|M_ZERO);
1135 if (!krp) {
1136 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1137 return (ENOMEM);
1138 }
1139 krp->krp_op = kop->crk_op;
1140 krp->krp_status = kop->crk_status;
1141 krp->krp_iparams = kop->crk_iparams;
1142 krp->krp_oparams = kop->crk_oparams;
1143 krp->krp_crid = kop->crk_crid;
1144 krp->krp_status = 0;
1145 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb;
1146
1147 for (i = 0; i < CRK_MAXPARAM; i++) {
1148 if (kop->crk_param[i].crp_nbits > 65536) {
1149 /* Limit is the same as in OpenBSD */
1150 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1151 goto fail;
1152 }
1153 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits;
1154 }
1155 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) {
1156 size = (krp->krp_param[i].crp_nbits + 7) / 8;
1157 if (size == 0)
1158 continue;
1159 krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK);
1160 if (i >= krp->krp_iparams)
1161 continue;
1162 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size);
1163 if (error) {
1164 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1165 goto fail;
1166 }
1167 }
1168
1169 error = crypto_kdispatch(krp);
1170 if (error) {
1171 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1172 goto fail;
1173 }
1174 error = tsleep(krp, PSOCK, "crydev", 0);
1175 if (error) {
1176 /* XXX can this happen? if so, how do we recover? */
1177 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1178 goto fail;
1179 }
1180
1181 kop->crk_crid = krp->krp_crid; /* device that did the work */
1182 if (krp->krp_status != 0) {
1183 error = krp->krp_status;
1184 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1185 goto fail;
1186 }
1187
1188 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) {
1189 size = (krp->krp_param[i].crp_nbits + 7) / 8;
1190 if (size == 0)
1191 continue;
1192 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size);
1193 if (error) {
1194 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
1195 goto fail;
1196 }
1197 }
1198
1199 fail:
1200 if (krp) {
1201 kop->crk_status = krp->krp_status;
1202 for (i = 0; i < CRK_MAXPARAM; i++) {
1203 if (krp->krp_param[i].crp_p)
1204 free(krp->krp_param[i].crp_p, M_XDATA);
1205 }
1206 free(krp, M_XDATA);
1207 }
1208 return (error);
1209 }
1210
1211 static int
1212 cryptodev_find(struct crypt_find_op *find)
1213 {
1214 device_t dev;
1215 size_t fnlen = sizeof find->name;
1216
1217 if (find->crid != -1) {
1218 dev = crypto_find_device_byhid(find->crid);
1219 if (dev == NULL)
1220 return (ENOENT);
1221 strncpy(find->name, device_get_nameunit(dev), fnlen);
1222 find->name[fnlen - 1] = '\x';
1223 } else {
1224 find->name[fnlen - 1] = '\x';
1225 find->crid = crypto_find_driver(find->name);
1226 if (find->crid == -1)
1227 return (ENOENT);
1228 }
1229 return (0);
1230 }
1231
1232 /* ARGSUSED */
1233 static int
1234 cryptof_stat(
1235 struct file *fp,
1236 struct stat *sb,
1237 struct ucred *active_cred,
1238 struct thread *td)
1239 {
1240
1241 return (EOPNOTSUPP);
1242 }
1243
1244 /* ARGSUSED */
1245 static int
1246 cryptof_close(struct file *fp, struct thread *td)
1247 {
1248 struct fcrypt *fcr = fp->f_data;
1249 struct csession *cse;
1250
1251 while ((cse = TAILQ_FIRST(&fcr->csessions))) {
1252 TAILQ_REMOVE(&fcr->csessions, cse, next);
1253 (void)csefree(cse);
1254 }
1255 free(fcr, M_XDATA);
1256 fp->f_data = NULL;
1257 return 0;
1258 }
1259
1260 static int
1261 cryptof_fill_kinfo(struct file *fp, struct kinfo_file *kif, struct filedesc *fdp)
1262 {
1263
1264 kif->kf_type = KF_TYPE_CRYPTO;
1265 return (0);
1266 }
1267
1268 static struct csession *
1269 csefind(struct fcrypt *fcr, u_int ses)
1270 {
1271 struct csession *cse;
1272
1273 TAILQ_FOREACH(cse, &fcr->csessions, next)
1274 if (cse->ses == ses)
1275 return (cse);
1276 return (NULL);
1277 }
1278
1279 static int
1280 csedelete(struct fcrypt *fcr, struct csession *cse_del)
1281 {
1282 struct csession *cse;
1283
1284 TAILQ_FOREACH(cse, &fcr->csessions, next) {
1285 if (cse == cse_del) {
1286 TAILQ_REMOVE(&fcr->csessions, cse, next);
1287 return (1);
1288 }
1289 }
1290 return (0);
1291 }
1292
1293 static struct csession *
1294 cseadd(struct fcrypt *fcr, struct csession *cse)
1295 {
1296 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next);
1297 cse->ses = fcr->sesn++;
1298 return (cse);
1299 }
1300
1301 struct csession *
1302 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen,
1303 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac,
1304 struct enc_xform *txform, struct auth_hash *thash)
1305 {
1306 struct csession *cse;
1307
1308 cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT | M_ZERO);
1309 if (cse == NULL)
1310 return NULL;
1311 mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF);
1312 cse->key = key;
1313 cse->keylen = keylen/8;
1314 cse->mackey = mackey;
1315 cse->mackeylen = mackeylen/8;
1316 cse->sid = sid;
1317 cse->cipher = cipher;
1318 cse->mac = mac;
1319 cse->txform = txform;
1320 cse->thash = thash;
1321 cseadd(fcr, cse);
1322 return (cse);
1323 }
1324
1325 static int
1326 csefree(struct csession *cse)
1327 {
1328 int error;
1329
1330 error = crypto_freesession(cse->sid);
1331 mtx_destroy(&cse->lock);
1332 if (cse->key)
1333 free(cse->key, M_XDATA);
1334 if (cse->mackey)
1335 free(cse->mackey, M_XDATA);
1336 free(cse, M_XDATA);
1337 return (error);
1338 }
1339
1340 static int
1341 cryptoopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
1342 {
1343 return (0);
1344 }
1345
1346 static int
1347 cryptoread(struct cdev *dev, struct uio *uio, int ioflag)
1348 {
1349 return (EIO);
1350 }
1351
1352 static int
1353 cryptowrite(struct cdev *dev, struct uio *uio, int ioflag)
1354 {
1355 return (EIO);
1356 }
1357
1358 static int
1359 cryptoioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1360 {
1361 struct file *f;
1362 struct fcrypt *fcr;
1363 int fd, error;
1364
1365 switch (cmd) {
1366 case CRIOGET:
1367 fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK);
1368 TAILQ_INIT(&fcr->csessions);
1369 fcr->sesn = 0;
1370
1371 error = falloc(td, &f, &fd, 0);
1372
1373 if (error) {
1374 free(fcr, M_XDATA);
1375 return (error);
1376 }
1377 /* falloc automatically provides an extra reference to 'f'. */
1378 finit(f, FREAD | FWRITE, DTYPE_CRYPTO, fcr, &cryptofops);
1379 *(u_int32_t *)data = fd;
1380 fdrop(f, td);
1381 break;
1382 case CRIOFINDDEV:
1383 error = cryptodev_find((struct crypt_find_op *)data);
1384 break;
1385 case CRIOASYMFEAT:
1386 error = crypto_getfeat((int *)data);
1387 break;
1388 default:
1389 error = EINVAL;
1390 break;
1391 }
1392 return (error);
1393 }
1394
1395 static struct cdevsw crypto_cdevsw = {
1396 .d_version = D_VERSION,
1397 .d_flags = D_NEEDGIANT,
1398 .d_open = cryptoopen,
1399 .d_read = cryptoread,
1400 .d_write = cryptowrite,
1401 .d_ioctl = cryptoioctl,
1402 .d_name = "crypto",
1403 };
1404 static struct cdev *crypto_dev;
1405
1406 /*
1407 * Initialization code, both for static and dynamic loading.
1408 */
1409 static int
1410 cryptodev_modevent(module_t mod, int type, void *unused)
1411 {
1412 switch (type) {
1413 case MOD_LOAD:
1414 if (bootverbose)
1415 printf("crypto: <crypto device>\n");
1416 crypto_dev = make_dev(&crypto_cdevsw, 0,
1417 UID_ROOT, GID_WHEEL, 0666,
1418 "crypto");
1419 return 0;
1420 case MOD_UNLOAD:
1421 /*XXX disallow if active sessions */
1422 destroy_dev(crypto_dev);
1423 return 0;
1424 }
1425 return EINVAL;
1426 }
1427
1428 static moduledata_t cryptodev_mod = {
1429 "cryptodev",
1430 cryptodev_modevent,
1431 0
1432 };
1433 MODULE_VERSION(cryptodev, 1);
1434 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
1435 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1);
1436 MODULE_DEPEND(cryptodev, zlib, 1, 1, 1);
Cache object: 2b258a71279583ab94ce289ca3452ee0
|