Index: head/sys/opencrypto/cryptodev.c =================================================================== --- head/sys/opencrypto/cryptodev.c (revision 323888) +++ head/sys/opencrypto/cryptodev.c (revision 323889) @@ -1,1373 +1,1373 @@ /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */ /*- * Copyright (c) 2001 Theo de Raadt * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting * Copyright (c) 2014 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by John-Mark Gurney * under sponsorship of the FreeBSD Foundation and * Rubicon Communications, LLC (Netgate). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. */ #include __FBSDID("$FreeBSD$"); #include "opt_compat.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include SDT_PROVIDER_DECLARE(opencrypto); SDT_PROBE_DEFINE1(opencrypto, dev, ioctl, error, "int"/*line number*/); #ifdef COMPAT_FREEBSD32 #include #include struct session_op32 { u_int32_t cipher; u_int32_t mac; u_int32_t keylen; u_int32_t key; int mackeylen; u_int32_t mackey; u_int32_t ses; }; struct session2_op32 { u_int32_t cipher; u_int32_t mac; u_int32_t keylen; u_int32_t key; int mackeylen; u_int32_t mackey; u_int32_t ses; int crid; int pad[4]; }; struct crypt_op32 { u_int32_t ses; u_int16_t op; u_int16_t flags; u_int len; u_int32_t src, dst; u_int32_t mac; u_int32_t iv; }; struct crparam32 { u_int32_t crp_p; u_int crp_nbits; }; struct crypt_kop32 { u_int crk_op; u_int crk_status; u_short crk_iparams; u_short crk_oparams; u_int crk_crid; struct crparam32 crk_param[CRK_MAXPARAM]; }; struct cryptotstat32 { struct timespec32 acc; struct timespec32 min; struct timespec32 max; u_int32_t count; }; struct cryptostats32 { u_int32_t cs_ops; u_int32_t cs_errs; u_int32_t cs_kops; u_int32_t cs_kerrs; u_int32_t cs_intrs; u_int32_t cs_rets; u_int32_t cs_blocks; u_int32_t cs_kblocks; struct cryptotstat32 cs_invoke; struct cryptotstat32 cs_done; struct cryptotstat32 cs_cb; struct cryptotstat32 cs_finis; }; #define CIOCGSESSION32 _IOWR('c', 101, struct session_op32) #define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32) #define CIOCKEY32 _IOWR('c', 104, struct crypt_kop32) #define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32) #define CIOCKEY232 _IOWR('c', 107, struct crypt_kop32) static void session_op_from_32(const struct session_op32 *from, struct session_op *to) { CP(*from, *to, cipher); CP(*from, *to, mac); CP(*from, *to, keylen); PTRIN_CP(*from, *to, key); CP(*from, *to, mackeylen); PTRIN_CP(*from, *to, mackey); CP(*from, *to, ses); } static void session2_op_from_32(const struct session2_op32 *from, struct session2_op *to) { session_op_from_32((const struct session_op32 *)from, (struct session_op *)to); CP(*from, *to, crid); } static void session_op_to_32(const struct session_op *from, struct session_op32 *to) { CP(*from, *to, cipher); CP(*from, *to, mac); CP(*from, *to, keylen); PTROUT_CP(*from, *to, key); CP(*from, *to, mackeylen); PTROUT_CP(*from, *to, mackey); CP(*from, *to, ses); } static void session2_op_to_32(const struct session2_op *from, struct session2_op32 *to) { session_op_to_32((const struct session_op *)from, (struct session_op32 *)to); CP(*from, *to, crid); } static void crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to) { CP(*from, *to, ses); CP(*from, *to, op); CP(*from, *to, flags); CP(*from, *to, len); PTRIN_CP(*from, *to, src); PTRIN_CP(*from, *to, dst); PTRIN_CP(*from, *to, mac); PTRIN_CP(*from, *to, iv); } static void crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to) { CP(*from, *to, ses); CP(*from, *to, op); CP(*from, *to, flags); CP(*from, *to, len); PTROUT_CP(*from, *to, src); PTROUT_CP(*from, *to, dst); PTROUT_CP(*from, *to, mac); PTROUT_CP(*from, *to, iv); } static void crparam_from_32(const struct crparam32 *from, struct crparam *to) { PTRIN_CP(*from, *to, crp_p); CP(*from, *to, crp_nbits); } static void crparam_to_32(const struct crparam *from, struct crparam32 *to) { PTROUT_CP(*from, *to, crp_p); CP(*from, *to, crp_nbits); } static void crypt_kop_from_32(const struct crypt_kop32 *from, struct crypt_kop *to) { int i; CP(*from, *to, crk_op); CP(*from, *to, crk_status); CP(*from, *to, crk_iparams); CP(*from, *to, crk_oparams); CP(*from, *to, crk_crid); for (i = 0; i < CRK_MAXPARAM; i++) crparam_from_32(&from->crk_param[i], &to->crk_param[i]); } static void crypt_kop_to_32(const struct crypt_kop *from, struct crypt_kop32 *to) { int i; CP(*from, *to, crk_op); CP(*from, *to, crk_status); CP(*from, *to, crk_iparams); CP(*from, *to, crk_oparams); CP(*from, *to, crk_crid); for (i = 0; i < CRK_MAXPARAM; i++) crparam_to_32(&from->crk_param[i], &to->crk_param[i]); } #endif struct csession { TAILQ_ENTRY(csession) next; u_int64_t sid; u_int32_t ses; struct mtx lock; /* for op submission */ u_int32_t cipher; struct enc_xform *txform; u_int32_t mac; struct auth_hash *thash; caddr_t key; int keylen; u_char tmp_iv[EALG_MAX_BLOCK_LEN]; caddr_t mackey; int mackeylen; struct iovec iovec; struct uio uio; int error; }; struct fcrypt { TAILQ_HEAD(csessionlist, csession) csessions; int sesn; }; static int cryptof_ioctl(struct file *, u_long, void *, struct ucred *, struct thread *); static int cryptof_stat(struct file *, struct stat *, struct ucred *, struct thread *); static int cryptof_close(struct file *, struct thread *); static int cryptof_fill_kinfo(struct file *, struct kinfo_file *, struct filedesc *); static struct fileops cryptofops = { .fo_read = invfo_rdwr, .fo_write = invfo_rdwr, .fo_truncate = invfo_truncate, .fo_ioctl = cryptof_ioctl, .fo_poll = invfo_poll, .fo_kqfilter = invfo_kqfilter, .fo_stat = cryptof_stat, .fo_close = cryptof_close, .fo_chmod = invfo_chmod, .fo_chown = invfo_chown, .fo_sendfile = invfo_sendfile, .fo_fill_kinfo = cryptof_fill_kinfo, }; static struct csession *csefind(struct fcrypt *, u_int); static int csedelete(struct fcrypt *, struct csession *); static struct csession *cseadd(struct fcrypt *, struct csession *); static struct csession *csecreate(struct fcrypt *, u_int64_t, caddr_t, u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *, struct auth_hash *); static int csefree(struct csession *); static int cryptodev_op(struct csession *, struct crypt_op *, struct ucred *, struct thread *td); static int cryptodev_aead(struct csession *, struct crypt_aead *, struct ucred *, struct thread *); static int cryptodev_key(struct crypt_kop *); static int cryptodev_find(struct crypt_find_op *); /* * Check a crypto identifier to see if it requested * a software device/driver. This can be done either * by device name/class or through search constraints. */ static int checkforsoftware(int *cridp) { int crid; crid = *cridp; if (!crypto_devallowsoft) { if (crid & CRYPTOCAP_F_SOFTWARE) { if (crid & CRYPTOCAP_F_HARDWARE) { *cridp = CRYPTOCAP_F_HARDWARE; return 0; } return EINVAL; } if ((crid & CRYPTOCAP_F_HARDWARE) == 0 && (crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0) return EINVAL; } return 0; } /* ARGSUSED */ static int cryptof_ioctl( struct file *fp, u_long cmd, void *data, struct ucred *active_cred, struct thread *td) { #define SES2(p) ((struct session2_op *)p) struct cryptoini cria, crie; struct fcrypt *fcr = fp->f_data; struct csession *cse; struct session_op *sop; struct crypt_op *cop; struct crypt_aead *caead; struct enc_xform *txform = NULL; struct auth_hash *thash = NULL; struct crypt_kop *kop; u_int64_t sid; u_int32_t ses; int error = 0, crid; #ifdef COMPAT_FREEBSD32 struct session2_op sopc; struct crypt_op copc; struct crypt_kop kopc; #endif switch (cmd) { case CIOCGSESSION: case CIOCGSESSION2: #ifdef COMPAT_FREEBSD32 case CIOCGSESSION32: case CIOCGSESSION232: if (cmd == CIOCGSESSION32) { session_op_from_32(data, (struct session_op *)&sopc); sop = (struct session_op *)&sopc; } else if (cmd == CIOCGSESSION232) { session2_op_from_32(data, &sopc); sop = (struct session_op *)&sopc; } else #endif sop = (struct session_op *)data; switch (sop->cipher) { case 0: break; case CRYPTO_DES_CBC: txform = &enc_xform_des; break; case CRYPTO_3DES_CBC: txform = &enc_xform_3des; break; case CRYPTO_BLF_CBC: txform = &enc_xform_blf; break; case CRYPTO_CAST_CBC: txform = &enc_xform_cast5; break; case CRYPTO_SKIPJACK_CBC: txform = &enc_xform_skipjack; break; case CRYPTO_AES_CBC: txform = &enc_xform_rijndael128; break; case CRYPTO_AES_XTS: txform = &enc_xform_aes_xts; break; case CRYPTO_NULL_CBC: txform = &enc_xform_null; break; case CRYPTO_ARC4: txform = &enc_xform_arc4; break; case CRYPTO_CAMELLIA_CBC: txform = &enc_xform_camellia; break; case CRYPTO_AES_ICM: txform = &enc_xform_aes_icm; break; case CRYPTO_AES_NIST_GCM_16: txform = &enc_xform_aes_nist_gcm; break; default: CRYPTDEB("invalid cipher"); return (EINVAL); } switch (sop->mac) { case 0: break; case CRYPTO_MD5_HMAC: thash = &auth_hash_hmac_md5; break; case CRYPTO_SHA1_HMAC: thash = &auth_hash_hmac_sha1; break; case CRYPTO_SHA2_256_HMAC: thash = &auth_hash_hmac_sha2_256; break; case CRYPTO_SHA2_384_HMAC: thash = &auth_hash_hmac_sha2_384; break; case CRYPTO_SHA2_512_HMAC: thash = &auth_hash_hmac_sha2_512; break; case CRYPTO_RIPEMD160_HMAC: thash = &auth_hash_hmac_ripemd_160; break; case CRYPTO_AES_128_NIST_GMAC: thash = &auth_hash_nist_gmac_aes_128; break; case CRYPTO_AES_192_NIST_GMAC: thash = &auth_hash_nist_gmac_aes_192; break; case CRYPTO_AES_256_NIST_GMAC: thash = &auth_hash_nist_gmac_aes_256; break; #ifdef notdef case CRYPTO_MD5: thash = &auth_hash_md5; break; case CRYPTO_SHA1: thash = &auth_hash_sha1; break; #endif case CRYPTO_NULL_HMAC: thash = &auth_hash_null; break; default: CRYPTDEB("invalid mac"); return (EINVAL); } bzero(&crie, sizeof(crie)); bzero(&cria, sizeof(cria)); if (txform) { crie.cri_alg = txform->type; crie.cri_klen = sop->keylen * 8; if (sop->keylen > txform->maxkey || sop->keylen < txform->minkey) { CRYPTDEB("invalid cipher parameters"); error = EINVAL; goto bail; } crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) { CRYPTDEB("invalid key"); goto bail; } if (thash) crie.cri_next = &cria; } if (thash) { cria.cri_alg = thash->type; cria.cri_klen = sop->mackeylen * 8; if (sop->mackeylen != thash->keysize) { CRYPTDEB("invalid mac key length"); error = EINVAL; goto bail; } if (cria.cri_klen) { cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, M_WAITOK); if ((error = copyin(sop->mackey, cria.cri_key, cria.cri_klen / 8))) { CRYPTDEB("invalid mac key"); goto bail; } } } /* NB: CIOCGSESSION2 has the crid */ if (cmd == CIOCGSESSION2 #ifdef COMPAT_FREEBSD32 || cmd == CIOCGSESSION232 #endif ) { crid = SES2(sop)->crid; error = checkforsoftware(&crid); if (error) { CRYPTDEB("checkforsoftware"); goto bail; } } else crid = CRYPTOCAP_F_HARDWARE; error = crypto_newsession(&sid, (txform ? &crie : &cria), crid); if (error) { CRYPTDEB("crypto_newsession"); goto bail; } cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform, thash); if (cse == NULL) { crypto_freesession(sid); error = EINVAL; CRYPTDEB("csecreate"); goto bail; } sop->ses = cse->ses; if (cmd == CIOCGSESSION2 #ifdef COMPAT_FREEBSD32 || cmd == CIOCGSESSION232 #endif ) { /* return hardware/driver id */ SES2(sop)->crid = CRYPTO_SESID2HID(cse->sid); } bail: if (error) { if (crie.cri_key) free(crie.cri_key, M_XDATA); if (cria.cri_key) free(cria.cri_key, M_XDATA); } #ifdef COMPAT_FREEBSD32 else { if (cmd == CIOCGSESSION32) session_op_to_32(sop, data); else if (cmd == CIOCGSESSION232) session2_op_to_32((struct session2_op *)sop, data); } #endif break; case CIOCFSESSION: ses = *(u_int32_t *)data; cse = csefind(fcr, ses); if (cse == NULL) return (EINVAL); csedelete(fcr, cse); error = csefree(cse); break; case CIOCCRYPT: #ifdef COMPAT_FREEBSD32 case CIOCCRYPT32: if (cmd == CIOCCRYPT32) { cop = &copc; crypt_op_from_32(data, cop); } else #endif cop = (struct crypt_op *)data; cse = csefind(fcr, cop->ses); if (cse == NULL) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); return (EINVAL); } error = cryptodev_op(cse, cop, active_cred, td); #ifdef COMPAT_FREEBSD32 if (error == 0 && cmd == CIOCCRYPT32) crypt_op_to_32(cop, data); #endif break; case CIOCKEY: case CIOCKEY2: #ifdef COMPAT_FREEBSD32 case CIOCKEY32: case CIOCKEY232: #endif if (!crypto_userasymcrypto) return (EPERM); /* XXX compat? */ #ifdef COMPAT_FREEBSD32 if (cmd == CIOCKEY32 || cmd == CIOCKEY232) { kop = &kopc; crypt_kop_from_32(data, kop); } else #endif kop = (struct crypt_kop *)data; if (cmd == CIOCKEY #ifdef COMPAT_FREEBSD32 || cmd == CIOCKEY32 #endif ) { /* NB: crypto core enforces s/w driver use */ kop->crk_crid = CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE; } mtx_lock(&Giant); error = cryptodev_key(kop); mtx_unlock(&Giant); #ifdef COMPAT_FREEBSD32 if (cmd == CIOCKEY32 || cmd == CIOCKEY232) crypt_kop_to_32(kop, data); #endif break; case CIOCASYMFEAT: if (!crypto_userasymcrypto) { /* * NB: if user asym crypto operations are * not permitted return "no algorithms" * so well-behaved applications will just * fallback to doing them in software. */ *(int *)data = 0; } else error = crypto_getfeat((int *)data); break; case CIOCFINDDEV: error = cryptodev_find((struct crypt_find_op *)data); break; case CIOCCRYPTAEAD: caead = (struct crypt_aead *)data; cse = csefind(fcr, caead->ses); if (cse == NULL) return (EINVAL); error = cryptodev_aead(cse, caead, active_cred, td); break; default: error = EINVAL; break; } return (error); #undef SES2 } static int cryptodev_cb(void *); static int cryptodev_op( struct csession *cse, struct crypt_op *cop, struct ucred *active_cred, struct thread *td) { struct cryptop *crp = NULL; struct cryptodesc *crde = NULL, *crda = NULL; int error; if (cop->len > 256*1024-4) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); return (E2BIG); } if (cse->txform) { if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); return (EINVAL); } } cse->uio.uio_iov = &cse->iovec; cse->uio.uio_iovcnt = 1; cse->uio.uio_offset = 0; cse->uio.uio_resid = cop->len; cse->uio.uio_segflg = UIO_SYSSPACE; cse->uio.uio_rw = UIO_WRITE; cse->uio.uio_td = td; cse->uio.uio_iov[0].iov_len = cop->len; if (cse->thash) { cse->uio.uio_iov[0].iov_len += cse->thash->hashsize; cse->uio.uio_resid += cse->thash->hashsize; } cse->uio.uio_iov[0].iov_base = malloc(cse->uio.uio_iov[0].iov_len, M_XDATA, M_WAITOK); crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL)); if (crp == NULL) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = ENOMEM; goto bail; } if (cse->thash) { crda = crp->crp_desc; if (cse->txform) crde = crda->crd_next; } else { if (cse->txform) crde = crp->crp_desc; else { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = EINVAL; goto bail; } } if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); goto bail; } if (crda) { crda->crd_skip = 0; crda->crd_len = cop->len; crda->crd_inject = cop->len; crda->crd_alg = cse->mac; crda->crd_key = cse->mackey; crda->crd_klen = cse->mackeylen * 8; } if (crde) { if (cop->op == COP_ENCRYPT) crde->crd_flags |= CRD_F_ENCRYPT; else crde->crd_flags &= ~CRD_F_ENCRYPT; crde->crd_len = cop->len; crde->crd_inject = 0; crde->crd_alg = cse->cipher; crde->crd_key = cse->key; crde->crd_klen = cse->keylen * 8; } crp->crp_ilen = cop->len; crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | (cop->flags & COP_F_BATCH); crp->crp_buf = (caddr_t)&cse->uio; crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; crp->crp_sid = cse->sid; crp->crp_opaque = (void *)cse; if (cop->iv) { if (crde == NULL) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = EINVAL; goto bail; } if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = EINVAL; goto bail; } if ((error = copyin(cop->iv, cse->tmp_iv, cse->txform->blocksize))) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); goto bail; } bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize); crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; crde->crd_skip = 0; } else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ crde->crd_skip = 0; } else if (crde) { crde->crd_flags |= CRD_F_IV_PRESENT; crde->crd_skip = cse->txform->blocksize; crde->crd_len -= cse->txform->blocksize; } if (cop->mac && crda == NULL) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = EINVAL; goto bail; } again: /* * Let the dispatch run unlocked, then, interlock against the * callback before checking if the operation completed and going * to sleep. This insures drivers don't inherit our lock which * results in a lock order reversal between crypto_dispatch forced * entry and the crypto_done callback into us. */ error = crypto_dispatch(crp); mtx_lock(&cse->lock); if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0) error = msleep(crp, &cse->lock, PWAIT, "crydev", 0); mtx_unlock(&cse->lock); if (error != 0) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); goto bail; } if (crp->crp_etype == EAGAIN) { crp->crp_etype = 0; crp->crp_flags &= ~CRYPTO_F_DONE; goto again; } if (crp->crp_etype != 0) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = crp->crp_etype; goto bail; } if (cse->error) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); error = cse->error; goto bail; } if (cop->dst && (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, cop->len))) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); goto bail; } if (cop->mac && (error = copyout((caddr_t)cse->uio.uio_iov[0].iov_base + cop->len, cop->mac, cse->thash->hashsize))) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); goto bail; } bail: if (crp) crypto_freereq(crp); if (cse->uio.uio_iov[0].iov_base) free(cse->uio.uio_iov[0].iov_base, M_XDATA); return (error); } static int cryptodev_aead( struct csession *cse, struct crypt_aead *caead, struct ucred *active_cred, struct thread *td) { struct uio *uio; struct cryptop *crp = NULL; struct cryptodesc *crde = NULL, *crda = NULL; int error; if (caead->len > 256*1024-4 || caead->aadlen > 256*1024-4) return (E2BIG); if (cse->txform == NULL || cse->thash == NULL || caead->tag == NULL || (caead->len % cse->txform->blocksize) != 0) return (EINVAL); uio = &cse->uio; uio->uio_iov = &cse->iovec; uio->uio_iovcnt = 1; uio->uio_offset = 0; - uio->uio_resid = caead->len + caead->aadlen + cse->thash->hashsize; + uio->uio_resid = caead->aadlen + caead->len + cse->thash->hashsize; uio->uio_segflg = UIO_SYSSPACE; uio->uio_rw = UIO_WRITE; uio->uio_td = td; uio->uio_iov[0].iov_len = uio->uio_resid; uio->uio_iov[0].iov_base = malloc(uio->uio_iov[0].iov_len, M_XDATA, M_WAITOK); crp = crypto_getreq(2); if (crp == NULL) { error = ENOMEM; goto bail; } crda = crp->crp_desc; crde = crda->crd_next; - if ((error = copyin(caead->src, cse->uio.uio_iov[0].iov_base, - caead->len))) + if ((error = copyin(caead->aad, cse->uio.uio_iov[0].iov_base, + caead->aadlen))) goto bail; - if ((error = copyin(caead->aad, (char *)cse->uio.uio_iov[0].iov_base + - caead->len, caead->aadlen))) + if ((error = copyin(caead->src, (char *)cse->uio.uio_iov[0].iov_base + + caead->aadlen, caead->len))) goto bail; - crda->crd_skip = caead->len; + crda->crd_skip = 0; crda->crd_len = caead->aadlen; - crda->crd_inject = caead->len + caead->aadlen; + crda->crd_inject = caead->aadlen + caead->len; crda->crd_alg = cse->mac; crda->crd_key = cse->mackey; crda->crd_klen = cse->mackeylen * 8; if (caead->op == COP_ENCRYPT) crde->crd_flags |= CRD_F_ENCRYPT; else crde->crd_flags &= ~CRD_F_ENCRYPT; - /* crde->crd_skip set below */ + crde->crd_skip = caead->aadlen; crde->crd_len = caead->len; - crde->crd_inject = 0; + crde->crd_inject = caead->aadlen; crde->crd_alg = cse->cipher; crde->crd_key = cse->key; crde->crd_klen = cse->keylen * 8; - crp->crp_ilen = caead->len + caead->aadlen; + crp->crp_ilen = caead->aadlen + caead->len; crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | (caead->flags & COP_F_BATCH); crp->crp_buf = (caddr_t)&cse->uio.uio_iov; crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; crp->crp_sid = cse->sid; crp->crp_opaque = (void *)cse; if (caead->iv) { if (caead->ivlen > sizeof cse->tmp_iv) { error = EINVAL; goto bail; } if ((error = copyin(caead->iv, cse->tmp_iv, caead->ivlen))) goto bail; bcopy(cse->tmp_iv, crde->crd_iv, caead->ivlen); crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; - crde->crd_skip = 0; } else { crde->crd_flags |= CRD_F_IV_PRESENT; - crde->crd_skip = cse->txform->blocksize; + crde->crd_skip += cse->txform->blocksize; crde->crd_len -= cse->txform->blocksize; } if ((error = copyin(caead->tag, (caddr_t)cse->uio.uio_iov[0].iov_base + caead->len + caead->aadlen, cse->thash->hashsize))) goto bail; again: /* * Let the dispatch run unlocked, then, interlock against the * callback before checking if the operation completed and going * to sleep. This insures drivers don't inherit our lock which * results in a lock order reversal between crypto_dispatch forced * entry and the crypto_done callback into us. */ error = crypto_dispatch(crp); mtx_lock(&cse->lock); if (error == 0 && (crp->crp_flags & CRYPTO_F_DONE) == 0) error = msleep(crp, &cse->lock, PWAIT, "crydev", 0); mtx_unlock(&cse->lock); if (error != 0) goto bail; if (crp->crp_etype == EAGAIN) { crp->crp_etype = 0; crp->crp_flags &= ~CRYPTO_F_DONE; goto again; } if (crp->crp_etype != 0) { error = crp->crp_etype; goto bail; } if (cse->error) { error = cse->error; goto bail; } - if (caead->dst && (error = copyout(cse->uio.uio_iov[0].iov_base, - caead->dst, caead->len))) + if (caead->dst && (error = copyout( + (caddr_t)cse->uio.uio_iov[0].iov_base + caead->aadlen, caead->dst, + caead->len))) goto bail; if ((error = copyout((caddr_t)cse->uio.uio_iov[0].iov_base + - caead->len + caead->aadlen, caead->tag, cse->thash->hashsize))) + caead->aadlen + caead->len, caead->tag, cse->thash->hashsize))) goto bail; bail: crypto_freereq(crp); free(cse->uio.uio_iov[0].iov_base, M_XDATA); return (error); } static int cryptodev_cb(void *op) { struct cryptop *crp = (struct cryptop *) op; struct csession *cse = (struct csession *)crp->crp_opaque; mtx_lock(&cse->lock); cse->error = crp->crp_etype; wakeup_one(crp); mtx_unlock(&cse->lock); return (0); } static int cryptodevkey_cb(void *op) { struct cryptkop *krp = (struct cryptkop *) op; wakeup_one(krp); return (0); } static int cryptodev_key(struct crypt_kop *kop) { struct cryptkop *krp = NULL; int error = EINVAL; int in, out, size, i; if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) { return (EFBIG); } in = kop->crk_iparams; out = kop->crk_oparams; switch (kop->crk_op) { case CRK_MOD_EXP: if (in == 3 && out == 1) break; return (EINVAL); case CRK_MOD_EXP_CRT: if (in == 6 && out == 1) break; return (EINVAL); case CRK_DSA_SIGN: if (in == 5 && out == 2) break; return (EINVAL); case CRK_DSA_VERIFY: if (in == 7 && out == 0) break; return (EINVAL); case CRK_DH_COMPUTE_KEY: if (in == 3 && out == 1) break; return (EINVAL); default: return (EINVAL); } krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK|M_ZERO); if (!krp) return (ENOMEM); krp->krp_op = kop->crk_op; krp->krp_status = kop->crk_status; krp->krp_iparams = kop->crk_iparams; krp->krp_oparams = kop->crk_oparams; krp->krp_crid = kop->crk_crid; krp->krp_status = 0; krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; for (i = 0; i < CRK_MAXPARAM; i++) { if (kop->crk_param[i].crp_nbits > 65536) /* Limit is the same as in OpenBSD */ goto fail; krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; } for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { size = (krp->krp_param[i].crp_nbits + 7) / 8; if (size == 0) continue; krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK); if (i >= krp->krp_iparams) continue; error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size); if (error) goto fail; } error = crypto_kdispatch(krp); if (error) goto fail; error = tsleep(krp, PSOCK, "crydev", 0); if (error) { /* XXX can this happen? if so, how do we recover? */ goto fail; } kop->crk_crid = krp->krp_crid; /* device that did the work */ if (krp->krp_status != 0) { error = krp->krp_status; goto fail; } for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) { size = (krp->krp_param[i].crp_nbits + 7) / 8; if (size == 0) continue; error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size); if (error) goto fail; } fail: if (krp) { kop->crk_status = krp->krp_status; for (i = 0; i < CRK_MAXPARAM; i++) { if (krp->krp_param[i].crp_p) free(krp->krp_param[i].crp_p, M_XDATA); } free(krp, M_XDATA); } return (error); } static int cryptodev_find(struct crypt_find_op *find) { device_t dev; size_t fnlen = sizeof find->name; if (find->crid != -1) { dev = crypto_find_device_byhid(find->crid); if (dev == NULL) return (ENOENT); strncpy(find->name, device_get_nameunit(dev), fnlen); find->name[fnlen - 1] = '\x0'; } else { find->name[fnlen - 1] = '\x0'; find->crid = crypto_find_driver(find->name); if (find->crid == -1) return (ENOENT); } return (0); } /* ARGSUSED */ static int cryptof_stat( struct file *fp, struct stat *sb, struct ucred *active_cred, struct thread *td) { return (EOPNOTSUPP); } /* ARGSUSED */ static int cryptof_close(struct file *fp, struct thread *td) { struct fcrypt *fcr = fp->f_data; struct csession *cse; while ((cse = TAILQ_FIRST(&fcr->csessions))) { TAILQ_REMOVE(&fcr->csessions, cse, next); (void)csefree(cse); } free(fcr, M_XDATA); fp->f_data = NULL; return 0; } static int cryptof_fill_kinfo(struct file *fp, struct kinfo_file *kif, struct filedesc *fdp) { kif->kf_type = KF_TYPE_CRYPTO; return (0); } static struct csession * csefind(struct fcrypt *fcr, u_int ses) { struct csession *cse; TAILQ_FOREACH(cse, &fcr->csessions, next) if (cse->ses == ses) return (cse); return (NULL); } static int csedelete(struct fcrypt *fcr, struct csession *cse_del) { struct csession *cse; TAILQ_FOREACH(cse, &fcr->csessions, next) { if (cse == cse_del) { TAILQ_REMOVE(&fcr->csessions, cse, next); return (1); } } return (0); } static struct csession * cseadd(struct fcrypt *fcr, struct csession *cse) { TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); cse->ses = fcr->sesn++; return (cse); } struct csession * csecreate(struct fcrypt *fcr, u_int64_t sid, caddr_t key, u_int64_t keylen, caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, struct enc_xform *txform, struct auth_hash *thash) { struct csession *cse; cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT | M_ZERO); if (cse == NULL) return NULL; mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF); cse->key = key; cse->keylen = keylen/8; cse->mackey = mackey; cse->mackeylen = mackeylen/8; cse->sid = sid; cse->cipher = cipher; cse->mac = mac; cse->txform = txform; cse->thash = thash; cseadd(fcr, cse); return (cse); } static int csefree(struct csession *cse) { int error; error = crypto_freesession(cse->sid); mtx_destroy(&cse->lock); if (cse->key) free(cse->key, M_XDATA); if (cse->mackey) free(cse->mackey, M_XDATA); free(cse, M_XDATA); return (error); } static int cryptoopen(struct cdev *dev, int oflags, int devtype, struct thread *td) { return (0); } static int cryptoread(struct cdev *dev, struct uio *uio, int ioflag) { return (EIO); } static int cryptowrite(struct cdev *dev, struct uio *uio, int ioflag) { return (EIO); } static int cryptoioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) { struct file *f; struct fcrypt *fcr; int fd, error; switch (cmd) { case CRIOGET: fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK); TAILQ_INIT(&fcr->csessions); fcr->sesn = 0; error = falloc(td, &f, &fd, 0); if (error) { free(fcr, M_XDATA); return (error); } /* falloc automatically provides an extra reference to 'f'. */ finit(f, FREAD | FWRITE, DTYPE_CRYPTO, fcr, &cryptofops); *(u_int32_t *)data = fd; fdrop(f, td); break; case CRIOFINDDEV: error = cryptodev_find((struct crypt_find_op *)data); break; case CRIOASYMFEAT: error = crypto_getfeat((int *)data); break; default: error = EINVAL; break; } return (error); } static struct cdevsw crypto_cdevsw = { .d_version = D_VERSION, .d_flags = D_NEEDGIANT, .d_open = cryptoopen, .d_read = cryptoread, .d_write = cryptowrite, .d_ioctl = cryptoioctl, .d_name = "crypto", }; static struct cdev *crypto_dev; /* * Initialization code, both for static and dynamic loading. */ static int cryptodev_modevent(module_t mod, int type, void *unused) { switch (type) { case MOD_LOAD: if (bootverbose) printf("crypto: \n"); crypto_dev = make_dev(&crypto_cdevsw, 0, UID_ROOT, GID_WHEEL, 0666, "crypto"); return 0; case MOD_UNLOAD: /*XXX disallow if active sessions */ destroy_dev(crypto_dev); return 0; } return EINVAL; } static moduledata_t cryptodev_mod = { "cryptodev", cryptodev_modevent, 0 }; MODULE_VERSION(cryptodev, 1); DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); MODULE_DEPEND(cryptodev, crypto, 1, 1, 1); MODULE_DEPEND(cryptodev, zlib, 1, 1, 1);