1 /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */
4 * Copyright (c) 2001 Theo de Raadt
5 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
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.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include "opt_compat.h"
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/malloc.h>
45 #include <sys/mutex.h>
46 #include <sys/sysctl.h>
48 #include <sys/filedesc.h>
49 #include <sys/errno.h>
51 #include <sys/random.h>
53 #include <sys/kernel.h>
54 #include <sys/module.h>
55 #include <sys/fcntl.h>
58 #include <opencrypto/cryptodev.h>
59 #include <opencrypto/xform.h>
61 #ifdef COMPAT_FREEBSD32
62 #include <sys/mount.h>
63 #include <compat/freebsd32/freebsd32.h>
75 struct session2_op32 {
108 struct crparam32 crk_param[CRK_MAXPARAM];
111 struct cryptotstat32 {
112 struct timespec32 acc;
113 struct timespec32 min;
114 struct timespec32 max;
118 struct cryptostats32 {
126 u_int32_t cs_kblocks;
127 struct cryptotstat32 cs_invoke;
128 struct cryptotstat32 cs_done;
129 struct cryptotstat32 cs_cb;
130 struct cryptotstat32 cs_finis;
133 #define CIOCGSESSION32 _IOWR('c', 101, struct session_op32)
134 #define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32)
135 #define CIOCKEY32 _IOWR('c', 104, struct crypt_kop32)
136 #define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32)
137 #define CIOCKEY232 _IOWR('c', 107, struct crypt_kop32)
140 session_op_from_32(const struct session_op32 *from, struct session_op *to)
143 CP(*from, *to, cipher);
145 CP(*from, *to, keylen);
146 PTRIN_CP(*from, *to, key);
147 CP(*from, *to, mackeylen);
148 PTRIN_CP(*from, *to, mackey);
153 session2_op_from_32(const struct session2_op32 *from, struct session2_op *to)
156 session_op_from_32((const struct session_op32 *)from,
157 (struct session_op *)to);
158 CP(*from, *to, crid);
162 session_op_to_32(const struct session_op *from, struct session_op32 *to)
165 CP(*from, *to, cipher);
167 CP(*from, *to, keylen);
168 PTROUT_CP(*from, *to, key);
169 CP(*from, *to, mackeylen);
170 PTROUT_CP(*from, *to, mackey);
175 session2_op_to_32(const struct session2_op *from, struct session2_op32 *to)
178 session_op_to_32((const struct session_op *)from,
179 (struct session_op32 *)to);
180 CP(*from, *to, crid);
184 crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to)
189 CP(*from, *to, flags);
191 PTRIN_CP(*from, *to, src);
192 PTRIN_CP(*from, *to, dst);
193 PTRIN_CP(*from, *to, mac);
194 PTRIN_CP(*from, *to, iv);
198 crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to)
203 CP(*from, *to, flags);
205 PTROUT_CP(*from, *to, src);
206 PTROUT_CP(*from, *to, dst);
207 PTROUT_CP(*from, *to, mac);
208 PTROUT_CP(*from, *to, iv);
212 crparam_from_32(const struct crparam32 *from, struct crparam *to)
215 PTRIN_CP(*from, *to, crp_p);
216 CP(*from, *to, crp_nbits);
220 crparam_to_32(const struct crparam *from, struct crparam32 *to)
223 PTROUT_CP(*from, *to, crp_p);
224 CP(*from, *to, crp_nbits);
228 crypt_kop_from_32(const struct crypt_kop32 *from, struct crypt_kop *to)
232 CP(*from, *to, crk_op);
233 CP(*from, *to, crk_status);
234 CP(*from, *to, crk_iparams);
235 CP(*from, *to, crk_oparams);
236 CP(*from, *to, crk_crid);
237 for (i = 0; i < CRK_MAXPARAM; i++)
238 crparam_from_32(&from->crk_param[i], &to->crk_param[i]);
242 crypt_kop_to_32(const struct crypt_kop *from, struct crypt_kop32 *to)
246 CP(*from, *to, crk_op);
247 CP(*from, *to, crk_status);
248 CP(*from, *to, crk_iparams);
249 CP(*from, *to, crk_oparams);
250 CP(*from, *to, crk_crid);
251 for (i = 0; i < CRK_MAXPARAM; i++)
252 crparam_to_32(&from->crk_param[i], &to->crk_param[i]);
257 TAILQ_ENTRY(csession) next;
260 struct mtx lock; /* for op submission */
263 struct enc_xform *txform;
265 struct auth_hash *thash;
269 u_char tmp_iv[EALG_MAX_BLOCK_LEN];
280 TAILQ_HEAD(csessionlist, csession) csessions;
284 static int cryptof_ioctl(struct file *, u_long, void *,
285 struct ucred *, struct thread *);
286 static int cryptof_stat(struct file *, struct stat *,
287 struct ucred *, struct thread *);
288 static int cryptof_close(struct file *, struct thread *);
290 static struct fileops cryptofops = {
291 .fo_read = invfo_rdwr,
292 .fo_write = invfo_rdwr,
293 .fo_truncate = invfo_truncate,
294 .fo_ioctl = cryptof_ioctl,
295 .fo_poll = invfo_poll,
296 .fo_kqfilter = invfo_kqfilter,
297 .fo_stat = cryptof_stat,
298 .fo_close = cryptof_close,
299 .fo_chmod = invfo_chmod,
300 .fo_chown = invfo_chown,
301 .fo_sendfile = invfo_sendfile,
304 static struct csession *csefind(struct fcrypt *, u_int);
305 static int csedelete(struct fcrypt *, struct csession *);
306 static struct csession *cseadd(struct fcrypt *, struct csession *);
307 static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t,
308 u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *,
310 static int csefree(struct csession *);
312 static int cryptodev_op(struct csession *, struct crypt_op *,
313 struct ucred *, struct thread *td);
314 static int cryptodev_key(struct crypt_kop *);
315 static int cryptodev_find(struct crypt_find_op *);
318 * Check a crypto identifier to see if it requested
319 * a software device/driver. This can be done either
320 * by device name/class or through search constraints.
323 checkforsoftware(int crid)
326 if (!crypto_devallowsoft) {
327 if (crid & CRYPTOCAP_F_SOFTWARE)
328 return EINVAL; /* XXX */
329 if ((crid & CRYPTOCAP_F_HARDWARE) == 0 &&
330 (crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0)
331 return EINVAL; /* XXX */
342 struct ucred *active_cred,
345 #define SES2(p) ((struct session2_op *)p)
346 struct cryptoini cria, crie;
347 struct fcrypt *fcr = fp->f_data;
348 struct csession *cse;
349 struct session_op *sop;
350 struct crypt_op *cop;
351 struct enc_xform *txform = NULL;
352 struct auth_hash *thash = NULL;
353 struct crypt_kop *kop;
357 #ifdef COMPAT_FREEBSD32
358 struct session2_op sopc;
359 struct crypt_op copc;
360 struct crypt_kop kopc;
366 #ifdef COMPAT_FREEBSD32
368 case CIOCGSESSION232:
369 if (cmd == CIOCGSESSION32) {
370 session_op_from_32(data, (struct session_op *)&sopc);
371 sop = (struct session_op *)&sopc;
372 } else if (cmd == CIOCGSESSION232) {
373 session2_op_from_32(data, &sopc);
374 sop = (struct session_op *)&sopc;
377 sop = (struct session_op *)data;
378 switch (sop->cipher) {
382 txform = &enc_xform_des;
384 case CRYPTO_3DES_CBC:
385 txform = &enc_xform_3des;
388 txform = &enc_xform_blf;
390 case CRYPTO_CAST_CBC:
391 txform = &enc_xform_cast5;
393 case CRYPTO_SKIPJACK_CBC:
394 txform = &enc_xform_skipjack;
397 txform = &enc_xform_rijndael128;
400 txform = &enc_xform_aes_xts;
402 case CRYPTO_NULL_CBC:
403 txform = &enc_xform_null;
406 txform = &enc_xform_arc4;
408 case CRYPTO_CAMELLIA_CBC:
409 txform = &enc_xform_camellia;
418 case CRYPTO_MD5_HMAC:
419 thash = &auth_hash_hmac_md5;
421 case CRYPTO_SHA1_HMAC:
422 thash = &auth_hash_hmac_sha1;
424 case CRYPTO_SHA2_256_HMAC:
425 thash = &auth_hash_hmac_sha2_256;
427 case CRYPTO_SHA2_384_HMAC:
428 thash = &auth_hash_hmac_sha2_384;
430 case CRYPTO_SHA2_512_HMAC:
431 thash = &auth_hash_hmac_sha2_512;
433 case CRYPTO_RIPEMD160_HMAC:
434 thash = &auth_hash_hmac_ripemd_160;
438 thash = &auth_hash_md5;
441 thash = &auth_hash_sha1;
444 case CRYPTO_NULL_HMAC:
445 thash = &auth_hash_null;
451 bzero(&crie, sizeof(crie));
452 bzero(&cria, sizeof(cria));
455 crie.cri_alg = txform->type;
456 crie.cri_klen = sop->keylen * 8;
457 if (sop->keylen > txform->maxkey ||
458 sop->keylen < txform->minkey) {
463 crie.cri_key = malloc(crie.cri_klen / 8,
465 if ((error = copyin(sop->key, crie.cri_key,
469 crie.cri_next = &cria;
473 cria.cri_alg = thash->type;
474 cria.cri_klen = sop->mackeylen * 8;
475 if (sop->mackeylen != thash->keysize) {
481 cria.cri_key = malloc(cria.cri_klen / 8,
483 if ((error = copyin(sop->mackey, cria.cri_key,
489 /* NB: CIOCGSESSION2 has the crid */
490 if (cmd == CIOCGSESSION2
491 #ifdef COMPAT_FREEBSD32
492 || cmd == CIOCGSESSION232
495 crid = SES2(sop)->crid;
496 error = checkforsoftware(crid);
500 crid = CRYPTOCAP_F_HARDWARE;
501 error = crypto_newsession(&sid, (txform ? &crie : &cria), crid);
505 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen,
506 cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform,
510 crypto_freesession(sid);
515 if (cmd == CIOCGSESSION2
516 #ifdef COMPAT_FREEBSD32
517 || cmd == CIOCGSESSION232
520 /* return hardware/driver id */
521 SES2(sop)->crid = CRYPTO_SESID2HID(cse->sid);
526 free(crie.cri_key, M_XDATA);
528 free(cria.cri_key, M_XDATA);
530 #ifdef COMPAT_FREEBSD32
532 if (cmd == CIOCGSESSION32)
533 session_op_to_32(sop, data);
534 else if (cmd == CIOCGSESSION232)
535 session2_op_to_32((struct session2_op *)sop,
541 ses = *(u_int32_t *)data;
542 cse = csefind(fcr, ses);
546 error = csefree(cse);
549 #ifdef COMPAT_FREEBSD32
551 if (cmd == CIOCCRYPT32) {
553 crypt_op_from_32(data, cop);
556 cop = (struct crypt_op *)data;
557 cse = csefind(fcr, cop->ses);
560 error = cryptodev_op(cse, cop, active_cred, td);
561 #ifdef COMPAT_FREEBSD32
562 if (error == 0 && cmd == CIOCCRYPT32)
563 crypt_op_to_32(cop, data);
568 #ifdef COMPAT_FREEBSD32
572 if (!crypto_userasymcrypto)
573 return (EPERM); /* XXX compat? */
574 #ifdef COMPAT_FREEBSD32
575 if (cmd == CIOCKEY32 || cmd == CIOCKEY232) {
577 crypt_kop_from_32(data, kop);
580 kop = (struct crypt_kop *)data;
582 #ifdef COMPAT_FREEBSD32
586 /* NB: crypto core enforces s/w driver use */
588 CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
591 error = cryptodev_key(kop);
593 #ifdef COMPAT_FREEBSD32
594 if (cmd == CIOCKEY32 || cmd == CIOCKEY232)
595 crypt_kop_to_32(kop, data);
599 if (!crypto_userasymcrypto) {
601 * NB: if user asym crypto operations are
602 * not permitted return "no algorithms"
603 * so well-behaved applications will just
604 * fallback to doing them in software.
608 error = crypto_getfeat((int *)data);
611 error = cryptodev_find((struct crypt_find_op *)data);
621 static int cryptodev_cb(void *);
626 struct csession *cse,
627 struct crypt_op *cop,
628 struct ucred *active_cred,
631 struct cryptop *crp = NULL;
632 struct cryptodesc *crde = NULL, *crda = NULL;
635 if (cop->len > 256*1024-4)
639 if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0)
643 cse->uio.uio_iov = &cse->iovec;
644 cse->uio.uio_iovcnt = 1;
645 cse->uio.uio_offset = 0;
646 cse->uio.uio_resid = cop->len;
647 cse->uio.uio_segflg = UIO_SYSSPACE;
648 cse->uio.uio_rw = UIO_WRITE;
649 cse->uio.uio_td = td;
650 cse->uio.uio_iov[0].iov_len = cop->len;
652 cse->uio.uio_iov[0].iov_len += cse->thash->hashsize;
653 cse->uio.uio_resid += cse->thash->hashsize;
655 cse->uio.uio_iov[0].iov_base = malloc(cse->uio.uio_iov[0].iov_len,
658 crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL));
665 crda = crp->crp_desc;
667 crde = crda->crd_next;
670 crde = crp->crp_desc;
677 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len)))
682 crda->crd_len = cop->len;
683 crda->crd_inject = cop->len;
685 crda->crd_alg = cse->mac;
686 crda->crd_key = cse->mackey;
687 crda->crd_klen = cse->mackeylen * 8;
691 if (cop->op == COP_ENCRYPT)
692 crde->crd_flags |= CRD_F_ENCRYPT;
694 crde->crd_flags &= ~CRD_F_ENCRYPT;
695 crde->crd_len = cop->len;
696 crde->crd_inject = 0;
698 crde->crd_alg = cse->cipher;
699 crde->crd_key = cse->key;
700 crde->crd_klen = cse->keylen * 8;
703 crp->crp_ilen = cop->len;
704 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
705 | (cop->flags & COP_F_BATCH);
706 crp->crp_buf = (caddr_t)&cse->uio;
707 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb;
708 crp->crp_sid = cse->sid;
709 crp->crp_opaque = (void *)cse;
716 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
720 if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize)))
722 bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize);
723 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
725 } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
728 crde->crd_flags |= CRD_F_IV_PRESENT;
729 crde->crd_skip = cse->txform->blocksize;
730 crde->crd_len -= cse->txform->blocksize;
733 if (cop->mac && crda == NULL) {
740 * Let the dispatch run unlocked, then, interlock against the
741 * callback before checking if the operation completed and going
742 * to sleep. This insures drivers don't inherit our lock which
743 * results in a lock order reversal between crypto_dispatch forced
744 * entry and the crypto_done callback into us.
746 error = crypto_dispatch(crp);
747 mtx_lock(&cse->lock);
748 if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0)
749 error = msleep(crp, &cse->lock, PWAIT, "crydev", 0);
750 mtx_unlock(&cse->lock);
755 if (crp->crp_etype == EAGAIN) {
757 crp->crp_flags &= ~CRYPTO_F_DONE;
761 if (crp->crp_etype != 0) {
762 error = crp->crp_etype;
772 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len)))
776 (error = copyout((caddr_t)cse->uio.uio_iov[0].iov_base + cop->len,
777 cop->mac, cse->thash->hashsize)))
783 if (cse->uio.uio_iov[0].iov_base)
784 free(cse->uio.uio_iov[0].iov_base, M_XDATA);
790 cryptodev_cb(void *op)
792 struct cryptop *crp = (struct cryptop *) op;
793 struct csession *cse = (struct csession *)crp->crp_opaque;
795 mtx_lock(&cse->lock);
796 cse->error = crp->crp_etype;
798 mtx_unlock(&cse->lock);
803 cryptodevkey_cb(void *op)
805 struct cryptkop *krp = (struct cryptkop *) op;
812 cryptodev_key(struct crypt_kop *kop)
814 struct cryptkop *krp = NULL;
816 int in, out, size, i;
818 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) {
822 in = kop->crk_iparams;
823 out = kop->crk_oparams;
824 switch (kop->crk_op) {
826 if (in == 3 && out == 1)
829 case CRK_MOD_EXP_CRT:
830 if (in == 6 && out == 1)
834 if (in == 5 && out == 2)
838 if (in == 7 && out == 0)
841 case CRK_DH_COMPUTE_KEY:
842 if (in == 3 && out == 1)
849 krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK|M_ZERO);
852 krp->krp_op = kop->crk_op;
853 krp->krp_status = kop->crk_status;
854 krp->krp_iparams = kop->crk_iparams;
855 krp->krp_oparams = kop->crk_oparams;
856 krp->krp_crid = kop->crk_crid;
858 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb;
860 for (i = 0; i < CRK_MAXPARAM; i++) {
861 if (kop->crk_param[i].crp_nbits > 65536)
862 /* Limit is the same as in OpenBSD */
864 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits;
866 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) {
867 size = (krp->krp_param[i].crp_nbits + 7) / 8;
870 krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK);
871 if (i >= krp->krp_iparams)
873 error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size);
878 error = crypto_kdispatch(krp);
881 error = tsleep(krp, PSOCK, "crydev", 0);
883 /* XXX can this happen? if so, how do we recover? */
887 kop->crk_crid = krp->krp_crid; /* device that did the work */
888 if (krp->krp_status != 0) {
889 error = krp->krp_status;
893 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) {
894 size = (krp->krp_param[i].crp_nbits + 7) / 8;
897 error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size);
904 kop->crk_status = krp->krp_status;
905 for (i = 0; i < CRK_MAXPARAM; i++) {
906 if (krp->krp_param[i].crp_p)
907 free(krp->krp_param[i].crp_p, M_XDATA);
915 cryptodev_find(struct crypt_find_op *find)
919 if (find->crid != -1) {
920 dev = crypto_find_device_byhid(find->crid);
923 strlcpy(find->name, device_get_nameunit(dev),
926 find->crid = crypto_find_driver(find->name);
927 if (find->crid == -1)
938 struct ucred *active_cred,
947 cryptof_close(struct file *fp, struct thread *td)
949 struct fcrypt *fcr = fp->f_data;
950 struct csession *cse;
952 while ((cse = TAILQ_FIRST(&fcr->csessions))) {
953 TAILQ_REMOVE(&fcr->csessions, cse, next);
961 static struct csession *
962 csefind(struct fcrypt *fcr, u_int ses)
964 struct csession *cse;
966 TAILQ_FOREACH(cse, &fcr->csessions, next)
973 csedelete(struct fcrypt *fcr, struct csession *cse_del)
975 struct csession *cse;
977 TAILQ_FOREACH(cse, &fcr->csessions, next) {
978 if (cse == cse_del) {
979 TAILQ_REMOVE(&fcr->csessions, cse, next);
986 static struct csession *
987 cseadd(struct fcrypt *fcr, struct csession *cse)
989 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next);
990 cse->ses = fcr->sesn++;
995 csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen,
996 caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac,
997 struct enc_xform *txform, struct auth_hash *thash)
999 struct csession *cse;
1001 cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT | M_ZERO);
1004 mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF);
1006 cse->keylen = keylen/8;
1007 cse->mackey = mackey;
1008 cse->mackeylen = mackeylen/8;
1010 cse->cipher = cipher;
1012 cse->txform = txform;
1019 csefree(struct csession *cse)
1023 error = crypto_freesession(cse->sid);
1024 mtx_destroy(&cse->lock);
1026 free(cse->key, M_XDATA);
1028 free(cse->mackey, M_XDATA);
1034 cryptoopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
1040 cryptoread(struct cdev *dev, struct uio *uio, int ioflag)
1046 cryptowrite(struct cdev *dev, struct uio *uio, int ioflag)
1052 cryptoioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1060 fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK);
1061 TAILQ_INIT(&fcr->csessions);
1064 error = falloc(td, &f, &fd, 0);
1070 /* falloc automatically provides an extra reference to 'f'. */
1071 finit(f, FREAD | FWRITE, DTYPE_CRYPTO, fcr, &cryptofops);
1072 *(u_int32_t *)data = fd;
1076 error = cryptodev_find((struct crypt_find_op *)data);
1079 error = crypto_getfeat((int *)data);
1088 static struct cdevsw crypto_cdevsw = {
1089 .d_version = D_VERSION,
1090 .d_flags = D_NEEDGIANT,
1091 .d_open = cryptoopen,
1092 .d_read = cryptoread,
1093 .d_write = cryptowrite,
1094 .d_ioctl = cryptoioctl,
1097 static struct cdev *crypto_dev;
1100 * Initialization code, both for static and dynamic loading.
1103 cryptodev_modevent(module_t mod, int type, void *unused)
1108 printf("crypto: <crypto device>\n");
1109 crypto_dev = make_dev(&crypto_cdevsw, 0,
1110 UID_ROOT, GID_WHEEL, 0666,
1114 /*XXX disallow if active sessions */
1115 destroy_dev(crypto_dev);
1121 static moduledata_t cryptodev_mod = {
1126 MODULE_VERSION(cryptodev, 1);
1127 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
1128 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1);
1129 MODULE_DEPEND(cryptodev, zlib, 1, 1, 1);