| 1 | /* $NetBSD: cryptodev.c,v 1.85 2016/07/07 06:55:43 msaitoh Exp $ */ |
| 2 | /* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */ |
| 3 | /* $OpenBSD: cryptodev.c,v 1.53 2002/07/10 22:21:30 mickey Exp $ */ |
| 4 | |
| 5 | /*- |
| 6 | * Copyright (c) 2008 The NetBSD Foundation, Inc. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * This code is derived from software contributed to The NetBSD Foundation |
| 10 | * by Coyote Point Systems, Inc. |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer. |
| 17 | * 2. Redistributions in binary form must reproduce the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer in the |
| 19 | * documentation and/or other materials provided with the distribution. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 23 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | * POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | /* |
| 35 | * Copyright (c) 2001 Theo de Raadt |
| 36 | * |
| 37 | * Redistribution and use in source and binary forms, with or without |
| 38 | * modification, are permitted provided that the following conditions |
| 39 | * are met: |
| 40 | * |
| 41 | * 1. Redistributions of source code must retain the above copyright |
| 42 | * notice, this list of conditions and the following disclaimer. |
| 43 | * 2. Redistributions in binary form must reproduce the above copyright |
| 44 | * notice, this list of conditions and the following disclaimer in the |
| 45 | * documentation and/or other materials provided with the distribution. |
| 46 | * 3. The name of the author may not be used to endorse or promote products |
| 47 | * derived from this software without specific prior written permission. |
| 48 | * |
| 49 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 50 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 51 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 52 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 53 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 54 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 55 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 56 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 57 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 58 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 59 | * |
| 60 | * Effort sponsored in part by the Defense Advanced Research Projects |
| 61 | * Agency (DARPA) and Air Force Research Laboratory, Air Force |
| 62 | * Materiel Command, USAF, under agreement number F30602-01-2-0537. |
| 63 | * |
| 64 | */ |
| 65 | |
| 66 | #include <sys/cdefs.h> |
| 67 | __KERNEL_RCSID(0, "$NetBSD: cryptodev.c,v 1.85 2016/07/07 06:55:43 msaitoh Exp $" ); |
| 68 | |
| 69 | #include <sys/param.h> |
| 70 | #include <sys/systm.h> |
| 71 | #include <sys/kmem.h> |
| 72 | #include <sys/malloc.h> |
| 73 | #include <sys/mbuf.h> |
| 74 | #include <sys/pool.h> |
| 75 | #include <sys/sysctl.h> |
| 76 | #include <sys/file.h> |
| 77 | #include <sys/filedesc.h> |
| 78 | #include <sys/errno.h> |
| 79 | #include <sys/md5.h> |
| 80 | #include <sys/sha1.h> |
| 81 | #include <sys/conf.h> |
| 82 | #include <sys/device.h> |
| 83 | #include <sys/kauth.h> |
| 84 | #include <sys/select.h> |
| 85 | #include <sys/poll.h> |
| 86 | #include <sys/atomic.h> |
| 87 | #include <sys/stat.h> |
| 88 | #include <sys/module.h> |
| 89 | |
| 90 | #ifdef _KERNEL_OPT |
| 91 | #include "opt_ocf.h" |
| 92 | #include "opt_compat_netbsd.h" |
| 93 | #endif |
| 94 | |
| 95 | #include <opencrypto/cryptodev.h> |
| 96 | #include <opencrypto/cryptodev_internal.h> |
| 97 | #include <opencrypto/xform.h> |
| 98 | |
| 99 | #include "ioconf.h" |
| 100 | |
| 101 | struct csession { |
| 102 | TAILQ_ENTRY(csession) next; |
| 103 | u_int64_t sid; |
| 104 | u_int32_t ses; |
| 105 | |
| 106 | u_int32_t cipher; /* note: shares name space in crd_alg */ |
| 107 | const struct enc_xform *txform; |
| 108 | u_int32_t mac; /* note: shares name space in crd_alg */ |
| 109 | const struct auth_hash *thash; |
| 110 | u_int32_t comp_alg; /* note: shares name space in crd_alg */ |
| 111 | const struct comp_algo *tcomp; |
| 112 | |
| 113 | void * key; |
| 114 | int keylen; |
| 115 | u_char tmp_iv[EALG_MAX_BLOCK_LEN]; |
| 116 | |
| 117 | void * mackey; |
| 118 | int mackeylen; |
| 119 | u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; |
| 120 | |
| 121 | struct iovec iovec[1]; /* user requests never have more */ |
| 122 | struct uio uio; |
| 123 | int error; |
| 124 | }; |
| 125 | |
| 126 | struct fcrypt { |
| 127 | TAILQ_HEAD(csessionlist, csession) csessions; |
| 128 | TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; |
| 129 | TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; |
| 130 | int sesn; |
| 131 | struct selinfo sinfo; |
| 132 | u_int32_t requestid; |
| 133 | struct timespec atime; |
| 134 | struct timespec mtime; |
| 135 | struct timespec btime; |
| 136 | }; |
| 137 | |
| 138 | /* For our fixed-size allocations */ |
| 139 | static struct pool fcrpl; |
| 140 | static struct pool csepl; |
| 141 | |
| 142 | /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ |
| 143 | static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); |
| 144 | static int cryptoread(dev_t dev, struct uio *uio, int ioflag); |
| 145 | static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); |
| 146 | static int cryptoselect(dev_t dev, int rw, struct lwp *l); |
| 147 | |
| 148 | static int crypto_refcount = 0; /* Prevent detaching while in use */ |
| 149 | |
| 150 | /* Declaration of cloned-device (per-ctxt) entrypoints */ |
| 151 | static int cryptof_read(struct file *, off_t *, struct uio *, |
| 152 | kauth_cred_t, int); |
| 153 | static int cryptof_write(struct file *, off_t *, struct uio *, |
| 154 | kauth_cred_t, int); |
| 155 | static int cryptof_ioctl(struct file *, u_long, void *); |
| 156 | static int cryptof_close(struct file *); |
| 157 | static int cryptof_poll(struct file *, int); |
| 158 | static int cryptof_stat(struct file *, struct stat *); |
| 159 | |
| 160 | static const struct fileops cryptofops = { |
| 161 | .fo_read = cryptof_read, |
| 162 | .fo_write = cryptof_write, |
| 163 | .fo_ioctl = cryptof_ioctl, |
| 164 | .fo_fcntl = fnullop_fcntl, |
| 165 | .fo_poll = cryptof_poll, |
| 166 | .fo_stat = cryptof_stat, |
| 167 | .fo_close = cryptof_close, |
| 168 | .fo_kqfilter = fnullop_kqfilter, |
| 169 | .fo_restart = fnullop_restart, |
| 170 | }; |
| 171 | |
| 172 | struct csession *cryptodev_csefind(struct fcrypt *, u_int); |
| 173 | static struct csession *csefind(struct fcrypt *, u_int); |
| 174 | static int csedelete(struct fcrypt *, struct csession *); |
| 175 | static struct csession *cseadd(struct fcrypt *, struct csession *); |
| 176 | static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, |
| 177 | u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, |
| 178 | const struct enc_xform *, const struct auth_hash *, |
| 179 | const struct comp_algo *); |
| 180 | static int csefree(struct csession *); |
| 181 | |
| 182 | static int cryptodev_key(struct crypt_kop *); |
| 183 | static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); |
| 184 | static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); |
| 185 | |
| 186 | static int cryptodev_cb(void *); |
| 187 | static int cryptodevkey_cb(void *); |
| 188 | |
| 189 | static int cryptodev_mcb(void *); |
| 190 | static int cryptodevkey_mcb(void *); |
| 191 | |
| 192 | static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, |
| 193 | int); |
| 194 | static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); |
| 195 | |
| 196 | #ifdef COMPAT_50 |
| 197 | extern int ocryptof_ioctl(struct file *, u_long, void *); |
| 198 | #endif |
| 199 | |
| 200 | /* |
| 201 | * sysctl-able control variables for /dev/crypto now defined in crypto.c: |
| 202 | * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. |
| 203 | */ |
| 204 | |
| 205 | /* ARGSUSED */ |
| 206 | int |
| 207 | cryptof_read(file_t *fp, off_t *poff, |
| 208 | struct uio *uio, kauth_cred_t cred, int flags) |
| 209 | { |
| 210 | return EIO; |
| 211 | } |
| 212 | |
| 213 | /* ARGSUSED */ |
| 214 | int |
| 215 | cryptof_write(file_t *fp, off_t *poff, |
| 216 | struct uio *uio, kauth_cred_t cred, int flags) |
| 217 | { |
| 218 | return EIO; |
| 219 | } |
| 220 | |
| 221 | /* ARGSUSED */ |
| 222 | int |
| 223 | cryptof_ioctl(struct file *fp, u_long cmd, void *data) |
| 224 | { |
| 225 | struct fcrypt *fcr = fp->f_fcrypt; |
| 226 | struct csession *cse; |
| 227 | struct session_op *sop; |
| 228 | struct session_n_op *snop; |
| 229 | struct crypt_op *cop; |
| 230 | struct crypt_mop *mop; |
| 231 | struct crypt_mkop *mkop; |
| 232 | struct crypt_n_op *cnop; |
| 233 | struct crypt_n_kop *knop; |
| 234 | struct crypt_sgop *sgop; |
| 235 | struct crypt_sfop *sfop; |
| 236 | struct cryptret *crypt_ret; |
| 237 | struct crypt_result *crypt_res; |
| 238 | u_int32_t ses; |
| 239 | u_int32_t *sesid; |
| 240 | int error = 0; |
| 241 | size_t count; |
| 242 | |
| 243 | /* backwards compatibility */ |
| 244 | file_t *criofp; |
| 245 | struct fcrypt *criofcr; |
| 246 | int criofd; |
| 247 | |
| 248 | mutex_enter(&crypto_mtx); |
| 249 | getnanotime(&fcr->atime); |
| 250 | mutex_exit(&crypto_mtx); |
| 251 | |
| 252 | switch (cmd) { |
| 253 | case CRIOGET: /* XXX deprecated, remove after 5.0 */ |
| 254 | if ((error = fd_allocfile(&criofp, &criofd)) != 0) |
| 255 | return error; |
| 256 | criofcr = pool_get(&fcrpl, PR_WAITOK); |
| 257 | mutex_enter(&crypto_mtx); |
| 258 | TAILQ_INIT(&criofcr->csessions); |
| 259 | TAILQ_INIT(&criofcr->crp_ret_mq); |
| 260 | TAILQ_INIT(&criofcr->crp_ret_mkq); |
| 261 | selinit(&criofcr->sinfo); |
| 262 | |
| 263 | /* |
| 264 | * Don't ever return session 0, to allow detection of |
| 265 | * failed creation attempts with multi-create ioctl. |
| 266 | */ |
| 267 | criofcr->sesn = 1; |
| 268 | criofcr->requestid = 1; |
| 269 | crypto_refcount++; |
| 270 | mutex_exit(&crypto_mtx); |
| 271 | (void)fd_clone(criofp, criofd, (FREAD|FWRITE), |
| 272 | &cryptofops, criofcr); |
| 273 | *(u_int32_t *)data = criofd; |
| 274 | return error; |
| 275 | break; |
| 276 | case CIOCGSESSION: |
| 277 | sop = (struct session_op *)data; |
| 278 | error = cryptodev_session(fcr, sop); |
| 279 | break; |
| 280 | case CIOCNGSESSION: |
| 281 | sgop = (struct crypt_sgop *)data; |
| 282 | snop = kmem_alloc((sgop->count * |
| 283 | sizeof(struct session_n_op)), KM_SLEEP); |
| 284 | error = copyin(sgop->sessions, snop, sgop->count * |
| 285 | sizeof(struct session_n_op)); |
| 286 | if (error) { |
| 287 | goto mbail; |
| 288 | } |
| 289 | |
| 290 | mutex_enter(&crypto_mtx); |
| 291 | fcr->mtime = fcr->atime; |
| 292 | mutex_exit(&crypto_mtx); |
| 293 | error = cryptodev_msession(fcr, snop, sgop->count); |
| 294 | if (error) { |
| 295 | goto mbail; |
| 296 | } |
| 297 | |
| 298 | error = copyout(snop, sgop->sessions, sgop->count * |
| 299 | sizeof(struct session_n_op)); |
| 300 | mbail: |
| 301 | kmem_free(snop, sgop->count * sizeof(struct session_n_op)); |
| 302 | break; |
| 303 | case CIOCFSESSION: |
| 304 | mutex_enter(&crypto_mtx); |
| 305 | fcr->mtime = fcr->atime; |
| 306 | ses = *(u_int32_t *)data; |
| 307 | cse = csefind(fcr, ses); |
| 308 | if (cse == NULL) { |
| 309 | mutex_exit(&crypto_mtx); |
| 310 | return EINVAL; |
| 311 | } |
| 312 | csedelete(fcr, cse); |
| 313 | mutex_exit(&crypto_mtx); |
| 314 | error = csefree(cse); |
| 315 | break; |
| 316 | case CIOCNFSESSION: |
| 317 | mutex_enter(&crypto_mtx); |
| 318 | fcr->mtime = fcr->atime; |
| 319 | mutex_exit(&crypto_mtx); |
| 320 | sfop = (struct crypt_sfop *)data; |
| 321 | sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), |
| 322 | KM_SLEEP); |
| 323 | error = copyin(sfop->sesid, sesid, |
| 324 | (sfop->count * sizeof(u_int32_t))); |
| 325 | if (!error) { |
| 326 | error = cryptodev_msessionfin(fcr, sfop->count, sesid); |
| 327 | } |
| 328 | kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); |
| 329 | break; |
| 330 | case CIOCCRYPT: |
| 331 | mutex_enter(&crypto_mtx); |
| 332 | fcr->mtime = fcr->atime; |
| 333 | cop = (struct crypt_op *)data; |
| 334 | cse = csefind(fcr, cop->ses); |
| 335 | mutex_exit(&crypto_mtx); |
| 336 | if (cse == NULL) { |
| 337 | DPRINTF(("csefind failed\n" )); |
| 338 | return EINVAL; |
| 339 | } |
| 340 | error = cryptodev_op(cse, cop, curlwp); |
| 341 | DPRINTF(("cryptodev_op error = %d\n" , error)); |
| 342 | break; |
| 343 | case CIOCNCRYPTM: |
| 344 | mutex_enter(&crypto_mtx); |
| 345 | fcr->mtime = fcr->atime; |
| 346 | mutex_exit(&crypto_mtx); |
| 347 | mop = (struct crypt_mop *)data; |
| 348 | cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), |
| 349 | KM_SLEEP); |
| 350 | error = copyin(mop->reqs, cnop, |
| 351 | (mop->count * sizeof(struct crypt_n_op))); |
| 352 | if(!error) { |
| 353 | error = cryptodev_mop(fcr, cnop, mop->count, curlwp); |
| 354 | if (!error) { |
| 355 | error = copyout(cnop, mop->reqs, |
| 356 | (mop->count * sizeof(struct crypt_n_op))); |
| 357 | } |
| 358 | } |
| 359 | kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); |
| 360 | break; |
| 361 | case CIOCKEY: |
| 362 | error = cryptodev_key((struct crypt_kop *)data); |
| 363 | DPRINTF(("cryptodev_key error = %d\n" , error)); |
| 364 | break; |
| 365 | case CIOCNFKEYM: |
| 366 | mutex_enter(&crypto_mtx); |
| 367 | fcr->mtime = fcr->atime; |
| 368 | mutex_exit(&crypto_mtx); |
| 369 | mkop = (struct crypt_mkop *)data; |
| 370 | knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), |
| 371 | KM_SLEEP); |
| 372 | error = copyin(mkop->reqs, knop, |
| 373 | (mkop->count * sizeof(struct crypt_n_kop))); |
| 374 | if (!error) { |
| 375 | error = cryptodev_mkey(fcr, knop, mkop->count); |
| 376 | if (!error) |
| 377 | error = copyout(knop, mkop->reqs, |
| 378 | (mkop->count * sizeof(struct crypt_n_kop))); |
| 379 | } |
| 380 | kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); |
| 381 | break; |
| 382 | case CIOCASYMFEAT: |
| 383 | error = crypto_getfeat((int *)data); |
| 384 | break; |
| 385 | case CIOCNCRYPTRETM: |
| 386 | mutex_enter(&crypto_mtx); |
| 387 | fcr->mtime = fcr->atime; |
| 388 | mutex_exit(&crypto_mtx); |
| 389 | crypt_ret = (struct cryptret *)data; |
| 390 | count = crypt_ret->count; |
| 391 | crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), |
| 392 | KM_SLEEP); |
| 393 | error = copyin(crypt_ret->results, crypt_res, |
| 394 | (count * sizeof(struct crypt_result))); |
| 395 | if (error) |
| 396 | goto reterr; |
| 397 | crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, |
| 398 | crypt_ret->count); |
| 399 | /* sanity check count */ |
| 400 | if (crypt_ret->count > count) { |
| 401 | printf("%s.%d: error returned count %zd > original " |
| 402 | " count %zd\n" , |
| 403 | __FILE__, __LINE__, crypt_ret->count, count); |
| 404 | crypt_ret->count = count; |
| 405 | |
| 406 | } |
| 407 | error = copyout(crypt_res, crypt_ret->results, |
| 408 | (crypt_ret->count * sizeof(struct crypt_result))); |
| 409 | reterr: |
| 410 | kmem_free(crypt_res, (count * sizeof(struct crypt_result))); |
| 411 | break; |
| 412 | case CIOCNCRYPTRET: |
| 413 | error = cryptodev_getstatus(fcr, (struct crypt_result *)data); |
| 414 | break; |
| 415 | default: |
| 416 | #ifdef COMPAT_50 |
| 417 | /* Check for backward compatible commands */ |
| 418 | error = ocryptof_ioctl(fp, cmd, data); |
| 419 | #else |
| 420 | return EINVAL; |
| 421 | #endif |
| 422 | } |
| 423 | return error; |
| 424 | } |
| 425 | |
| 426 | int |
| 427 | cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) |
| 428 | { |
| 429 | struct cryptop *crp = NULL; |
| 430 | struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; |
| 431 | int error; |
| 432 | int iov_len = cop->len; |
| 433 | int flags=0; |
| 434 | int dst_len; /* copyout size */ |
| 435 | |
| 436 | if (cop->len > 256*1024-4) |
| 437 | return E2BIG; |
| 438 | |
| 439 | if (cse->txform) { |
| 440 | if (cop->len < cse->txform->blocksize |
| 441 | + (cop->iv ? 0 : cse->txform->ivsize) || |
| 442 | (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) |
| 443 | % cse->txform->blocksize != 0) |
| 444 | return EINVAL; |
| 445 | } |
| 446 | |
| 447 | DPRINTF(("cryptodev_op[%u]: iov_len %d\n" , |
| 448 | CRYPTO_SESID2LID(cse->sid), iov_len)); |
| 449 | if ((cse->tcomp) && cop->dst_len) { |
| 450 | if (iov_len < cop->dst_len) { |
| 451 | /* Need larger iov to deal with decompress */ |
| 452 | iov_len = cop->dst_len; |
| 453 | } |
| 454 | DPRINTF(("cryptodev_op: iov_len -> %d for decompress\n" , iov_len)); |
| 455 | } |
| 456 | |
| 457 | (void)memset(&cse->uio, 0, sizeof(cse->uio)); |
| 458 | cse->uio.uio_iovcnt = 1; |
| 459 | cse->uio.uio_resid = 0; |
| 460 | cse->uio.uio_rw = UIO_WRITE; |
| 461 | cse->uio.uio_iov = cse->iovec; |
| 462 | UIO_SETUP_SYSSPACE(&cse->uio); |
| 463 | memset(&cse->iovec, 0, sizeof(cse->iovec)); |
| 464 | |
| 465 | /* the iov needs to be big enough to handle the uncompressed |
| 466 | * data.... */ |
| 467 | cse->uio.uio_iov[0].iov_len = iov_len; |
| 468 | if (iov_len > 0) |
| 469 | cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); |
| 470 | cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; |
| 471 | DPRINTF(("cryptodev_op[%u]: uio.iov_base %p malloced %d bytes\n" , |
| 472 | CRYPTO_SESID2LID(cse->sid), |
| 473 | cse->uio.uio_iov[0].iov_base, iov_len)); |
| 474 | |
| 475 | crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); |
| 476 | if (crp == NULL) { |
| 477 | error = ENOMEM; |
| 478 | goto bail; |
| 479 | } |
| 480 | DPRINTF(("cryptodev_op[%u]: crp %p\n" , |
| 481 | CRYPTO_SESID2LID(cse->sid), crp)); |
| 482 | |
| 483 | /* crds are always ordered tcomp, thash, then txform */ |
| 484 | /* with optional missing links */ |
| 485 | |
| 486 | /* XXX: If we're going to compress then hash or encrypt, we need |
| 487 | * to be able to pass on the new size of the data. |
| 488 | */ |
| 489 | |
| 490 | if (cse->tcomp) { |
| 491 | crdc = crp->crp_desc; |
| 492 | } |
| 493 | |
| 494 | if (cse->thash) { |
| 495 | crda = crdc ? crdc->crd_next : crp->crp_desc; |
| 496 | if (cse->txform && crda) |
| 497 | crde = crda->crd_next; |
| 498 | } else { |
| 499 | if (cse->txform) { |
| 500 | crde = crdc ? crdc->crd_next : crp->crp_desc; |
| 501 | } else if (!cse->tcomp) { |
| 502 | error = EINVAL; |
| 503 | goto bail; |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | DPRINTF(("ocf[%u]: iov_len %zu, cop->len %u\n" , |
| 508 | CRYPTO_SESID2LID(cse->sid), |
| 509 | cse->uio.uio_iov[0].iov_len, |
| 510 | cop->len)); |
| 511 | |
| 512 | if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) |
| 513 | { |
| 514 | printf("copyin failed %s %d \n" , (char *)cop->src, error); |
| 515 | goto bail; |
| 516 | } |
| 517 | |
| 518 | if (crdc) { |
| 519 | switch (cop->op) { |
| 520 | case COP_COMP: |
| 521 | crdc->crd_flags |= CRD_F_COMP; |
| 522 | break; |
| 523 | case COP_DECOMP: |
| 524 | crdc->crd_flags &= ~CRD_F_COMP; |
| 525 | break; |
| 526 | default: |
| 527 | break; |
| 528 | } |
| 529 | /* more data to follow? */ |
| 530 | if (cop->flags & COP_F_MORE) { |
| 531 | flags |= CRYPTO_F_MORE; |
| 532 | } |
| 533 | crdc->crd_len = cop->len; |
| 534 | crdc->crd_inject = 0; |
| 535 | |
| 536 | crdc->crd_alg = cse->comp_alg; |
| 537 | crdc->crd_key = NULL; |
| 538 | crdc->crd_klen = 0; |
| 539 | DPRINTF(("cryptodev_op[%u]: crdc setup for comp_alg %d.\n" , |
| 540 | CRYPTO_SESID2LID(cse->sid), crdc->crd_alg)); |
| 541 | } |
| 542 | |
| 543 | if (crda) { |
| 544 | crda->crd_skip = 0; |
| 545 | crda->crd_len = cop->len; |
| 546 | crda->crd_inject = 0; /* ??? */ |
| 547 | |
| 548 | crda->crd_alg = cse->mac; |
| 549 | crda->crd_key = cse->mackey; |
| 550 | crda->crd_klen = cse->mackeylen * 8; |
| 551 | DPRINTF(("cryptodev_op: crda setup for mac %d.\n" , crda->crd_alg)); |
| 552 | } |
| 553 | |
| 554 | if (crde) { |
| 555 | switch (cop->op) { |
| 556 | case COP_ENCRYPT: |
| 557 | crde->crd_flags |= CRD_F_ENCRYPT; |
| 558 | break; |
| 559 | case COP_DECRYPT: |
| 560 | crde->crd_flags &= ~CRD_F_ENCRYPT; |
| 561 | break; |
| 562 | default: |
| 563 | break; |
| 564 | } |
| 565 | crde->crd_len = cop->len; |
| 566 | crde->crd_inject = 0; |
| 567 | |
| 568 | if (cse->cipher == CRYPTO_AES_GCM_16 && crda) |
| 569 | crda->crd_len = 0; |
| 570 | else if (cse->cipher == CRYPTO_AES_GMAC) |
| 571 | crde->crd_len = 0; |
| 572 | |
| 573 | crde->crd_alg = cse->cipher; |
| 574 | crde->crd_key = cse->key; |
| 575 | crde->crd_klen = cse->keylen * 8; |
| 576 | DPRINTF(("cryptodev_op: crde setup for cipher %d.\n" , crde->crd_alg)); |
| 577 | } |
| 578 | |
| 579 | |
| 580 | crp->crp_ilen = cop->len; |
| 581 | /* The reqest is flagged as CRYPTO_F_USER as long as it is running |
| 582 | * in the user IOCTL thread. This flag lets us skip using the retq for |
| 583 | * the request if it completes immediately. If the request ends up being |
| 584 | * delayed or is not completed immediately the flag is removed. |
| 585 | */ |
| 586 | crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | CRYPTO_F_USER | |
| 587 | flags; |
| 588 | crp->crp_buf = (void *)&cse->uio; |
| 589 | crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; |
| 590 | crp->crp_sid = cse->sid; |
| 591 | crp->crp_opaque = (void *)cse; |
| 592 | |
| 593 | if (cop->iv) { |
| 594 | if (crde == NULL) { |
| 595 | error = EINVAL; |
| 596 | goto bail; |
| 597 | } |
| 598 | if (cse->txform->ivsize == 0) { |
| 599 | error = EINVAL; |
| 600 | goto bail; |
| 601 | } |
| 602 | if ((error = copyin(cop->iv, cse->tmp_iv, |
| 603 | cse->txform->ivsize))) |
| 604 | goto bail; |
| 605 | (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); |
| 606 | crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; |
| 607 | crde->crd_skip = 0; |
| 608 | } else if (crde) { |
| 609 | if (cse->txform->ivsize == 0) { |
| 610 | crde->crd_skip = 0; |
| 611 | } else { |
| 612 | if (!(crde->crd_flags & CRD_F_ENCRYPT)) |
| 613 | crde->crd_flags |= CRD_F_IV_PRESENT; |
| 614 | crde->crd_skip = cse->txform->ivsize; |
| 615 | crde->crd_len -= cse->txform->ivsize; |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | if (cop->mac) { |
| 620 | if (crda == NULL) { |
| 621 | error = EINVAL; |
| 622 | goto bail; |
| 623 | } |
| 624 | crp->crp_mac=cse->tmp_mac; |
| 625 | } |
| 626 | |
| 627 | cv_init(&crp->crp_cv, "crydev" ); |
| 628 | |
| 629 | /* |
| 630 | * XXX there was a comment here which said that we went to |
| 631 | * XXX splcrypto() but needed to only if CRYPTO_F_CBIMM, |
| 632 | * XXX disabled on NetBSD since 1.6O due to a race condition. |
| 633 | * XXX But crypto_dispatch went to splcrypto() itself! (And |
| 634 | * XXX now takes the crypto_mtx mutex itself). We do, however, |
| 635 | * XXX need to hold the mutex across the call to cv_wait(). |
| 636 | * XXX (should we arrange for crypto_dispatch to return to |
| 637 | * XXX us with it held? it seems quite ugly to do so.) |
| 638 | */ |
| 639 | #ifdef notyet |
| 640 | eagain: |
| 641 | #endif |
| 642 | error = crypto_dispatch(crp); |
| 643 | mutex_enter(&crypto_mtx); |
| 644 | |
| 645 | /* |
| 646 | * If the request was going to be completed by the |
| 647 | * ioctl thread then it would have been done by now. |
| 648 | * Remove the F_USER flag so crypto_done() is not confused |
| 649 | * if the crypto device calls it after this point. |
| 650 | */ |
| 651 | crp->crp_flags &= ~(CRYPTO_F_USER); |
| 652 | |
| 653 | switch (error) { |
| 654 | #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ |
| 655 | case EAGAIN: |
| 656 | mutex_exit(&crypto_mtx); |
| 657 | goto eagain; |
| 658 | break; |
| 659 | #endif |
| 660 | case 0: |
| 661 | break; |
| 662 | default: |
| 663 | DPRINTF(("cryptodev_op: not waiting, error.\n" )); |
| 664 | mutex_exit(&crypto_mtx); |
| 665 | cv_destroy(&crp->crp_cv); |
| 666 | goto bail; |
| 667 | } |
| 668 | |
| 669 | while (!(crp->crp_flags & CRYPTO_F_DONE)) { |
| 670 | DPRINTF(("cryptodev_op[%d]: sleeping on cv %p for crp %p\n" , |
| 671 | (uint32_t)cse->sid, &crp->crp_cv, crp)); |
| 672 | cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ |
| 673 | } |
| 674 | if (crp->crp_flags & CRYPTO_F_ONRETQ) { |
| 675 | /* XXX this should never happen now with the CRYPTO_F_USER flag |
| 676 | * changes. |
| 677 | */ |
| 678 | DPRINTF(("cryptodev_op: DONE, not woken by cryptoret.\n" )); |
| 679 | (void)crypto_ret_q_remove(crp); |
| 680 | } |
| 681 | mutex_exit(&crypto_mtx); |
| 682 | cv_destroy(&crp->crp_cv); |
| 683 | |
| 684 | if (crp->crp_etype != 0) { |
| 685 | DPRINTF(("cryptodev_op: crp_etype %d\n" , crp->crp_etype)); |
| 686 | error = crp->crp_etype; |
| 687 | goto bail; |
| 688 | } |
| 689 | |
| 690 | if (cse->error) { |
| 691 | DPRINTF(("cryptodev_op: cse->error %d\n" , cse->error)); |
| 692 | error = cse->error; |
| 693 | goto bail; |
| 694 | } |
| 695 | |
| 696 | dst_len = crp->crp_ilen; |
| 697 | /* let the user know how much data was returned */ |
| 698 | if (crp->crp_olen) { |
| 699 | if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { |
| 700 | error = ENOSPC; |
| 701 | goto bail; |
| 702 | } |
| 703 | dst_len = cop->dst_len = crp->crp_olen; |
| 704 | } |
| 705 | |
| 706 | if (cop->dst) { |
| 707 | DPRINTF(("cryptodev_op: copyout %d bytes to %p\n" , dst_len, cop->dst)); |
| 708 | } |
| 709 | if (cop->dst && |
| 710 | (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) |
| 711 | { |
| 712 | DPRINTF(("cryptodev_op: copyout error %d\n" , error)); |
| 713 | goto bail; |
| 714 | } |
| 715 | |
| 716 | if (cop->mac && |
| 717 | (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { |
| 718 | DPRINTF(("cryptodev_op: mac copyout error %d\n" , error)); |
| 719 | goto bail; |
| 720 | } |
| 721 | |
| 722 | |
| 723 | bail: |
| 724 | if (crp) { |
| 725 | crypto_freereq(crp); |
| 726 | } |
| 727 | if (cse->uio.uio_iov[0].iov_base) { |
| 728 | kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); |
| 729 | } |
| 730 | |
| 731 | return error; |
| 732 | } |
| 733 | |
| 734 | static int |
| 735 | cryptodev_cb(void *op) |
| 736 | { |
| 737 | struct cryptop *crp = (struct cryptop *) op; |
| 738 | struct csession *cse = (struct csession *)crp->crp_opaque; |
| 739 | int error = 0; |
| 740 | |
| 741 | mutex_enter(&crypto_mtx); |
| 742 | cse->error = crp->crp_etype; |
| 743 | if (crp->crp_etype == EAGAIN) { |
| 744 | /* always drop mutex to call dispatch routine */ |
| 745 | mutex_exit(&crypto_mtx); |
| 746 | error = crypto_dispatch(crp); |
| 747 | mutex_enter(&crypto_mtx); |
| 748 | } |
| 749 | if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { |
| 750 | cv_signal(&crp->crp_cv); |
| 751 | } |
| 752 | mutex_exit(&crypto_mtx); |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | static int |
| 757 | cryptodev_mcb(void *op) |
| 758 | { |
| 759 | struct cryptop *crp = (struct cryptop *) op; |
| 760 | struct csession *cse = (struct csession *)crp->crp_opaque; |
| 761 | int error=0; |
| 762 | |
| 763 | mutex_enter(&crypto_mtx); |
| 764 | cse->error = crp->crp_etype; |
| 765 | if (crp->crp_etype == EAGAIN) { |
| 766 | mutex_exit(&crypto_mtx); |
| 767 | error = crypto_dispatch(crp); |
| 768 | mutex_enter(&crypto_mtx); |
| 769 | } |
| 770 | if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { |
| 771 | cv_signal(&crp->crp_cv); |
| 772 | } |
| 773 | |
| 774 | TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); |
| 775 | selnotify(&crp->fcrp->sinfo, 0, 0); |
| 776 | mutex_exit(&crypto_mtx); |
| 777 | return 0; |
| 778 | } |
| 779 | |
| 780 | static int |
| 781 | cryptodevkey_cb(void *op) |
| 782 | { |
| 783 | struct cryptkop *krp = op; |
| 784 | |
| 785 | mutex_enter(&crypto_mtx); |
| 786 | cv_signal(&krp->krp_cv); |
| 787 | mutex_exit(&crypto_mtx); |
| 788 | return 0; |
| 789 | } |
| 790 | |
| 791 | static int |
| 792 | cryptodevkey_mcb(void *op) |
| 793 | { |
| 794 | struct cryptkop *krp = op; |
| 795 | |
| 796 | mutex_enter(&crypto_mtx); |
| 797 | cv_signal(&krp->krp_cv); |
| 798 | TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); |
| 799 | selnotify(&krp->fcrp->sinfo, 0, 0); |
| 800 | mutex_exit(&crypto_mtx); |
| 801 | return 0; |
| 802 | } |
| 803 | |
| 804 | static int |
| 805 | cryptodev_key(struct crypt_kop *kop) |
| 806 | { |
| 807 | struct cryptkop *krp = NULL; |
| 808 | int error = EINVAL; |
| 809 | int in, out, size, i; |
| 810 | |
| 811 | if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) |
| 812 | return EFBIG; |
| 813 | |
| 814 | in = kop->crk_iparams; |
| 815 | out = kop->crk_oparams; |
| 816 | switch (kop->crk_op) { |
| 817 | case CRK_MOD_EXP: |
| 818 | if (in == 3 && out == 1) |
| 819 | break; |
| 820 | return EINVAL; |
| 821 | case CRK_MOD_EXP_CRT: |
| 822 | if (in == 6 && out == 1) |
| 823 | break; |
| 824 | return EINVAL; |
| 825 | case CRK_DSA_SIGN: |
| 826 | if (in == 5 && out == 2) |
| 827 | break; |
| 828 | return EINVAL; |
| 829 | case CRK_DSA_VERIFY: |
| 830 | if (in == 7 && out == 0) |
| 831 | break; |
| 832 | return EINVAL; |
| 833 | case CRK_DH_COMPUTE_KEY: |
| 834 | if (in == 3 && out == 1) |
| 835 | break; |
| 836 | return EINVAL; |
| 837 | case CRK_MOD_ADD: |
| 838 | if (in == 3 && out == 1) |
| 839 | break; |
| 840 | return EINVAL; |
| 841 | case CRK_MOD_ADDINV: |
| 842 | if (in == 2 && out == 1) |
| 843 | break; |
| 844 | return EINVAL; |
| 845 | case CRK_MOD_SUB: |
| 846 | if (in == 3 && out == 1) |
| 847 | break; |
| 848 | return EINVAL; |
| 849 | case CRK_MOD_MULT: |
| 850 | if (in == 3 && out == 1) |
| 851 | break; |
| 852 | return EINVAL; |
| 853 | case CRK_MOD_MULTINV: |
| 854 | if (in == 2 && out == 1) |
| 855 | break; |
| 856 | return EINVAL; |
| 857 | case CRK_MOD: |
| 858 | if (in == 2 && out == 1) |
| 859 | break; |
| 860 | return EINVAL; |
| 861 | default: |
| 862 | return EINVAL; |
| 863 | } |
| 864 | |
| 865 | krp = pool_get(&cryptkop_pool, PR_WAITOK); |
| 866 | (void)memset(krp, 0, sizeof *krp); |
| 867 | cv_init(&krp->krp_cv, "crykdev" ); |
| 868 | krp->krp_op = kop->crk_op; |
| 869 | krp->krp_status = kop->crk_status; |
| 870 | krp->krp_iparams = kop->crk_iparams; |
| 871 | krp->krp_oparams = kop->crk_oparams; |
| 872 | krp->krp_status = 0; |
| 873 | krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; |
| 874 | |
| 875 | for (i = 0; i < CRK_MAXPARAM; i++) |
| 876 | krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; |
| 877 | for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { |
| 878 | size = (krp->krp_param[i].crp_nbits + 7) / 8; |
| 879 | if (size == 0) |
| 880 | continue; |
| 881 | krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); |
| 882 | if (i >= krp->krp_iparams) |
| 883 | continue; |
| 884 | error = copyin(kop->crk_param[i].crp_p, |
| 885 | krp->krp_param[i].crp_p, size); |
| 886 | if (error) |
| 887 | goto fail; |
| 888 | } |
| 889 | |
| 890 | error = crypto_kdispatch(krp); |
| 891 | if (error != 0) { |
| 892 | goto fail; |
| 893 | } |
| 894 | |
| 895 | mutex_enter(&crypto_mtx); |
| 896 | while (!(krp->krp_flags & CRYPTO_F_DONE)) { |
| 897 | cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ |
| 898 | } |
| 899 | if (krp->krp_flags & CRYPTO_F_ONRETQ) { |
| 900 | DPRINTF(("cryptodev_key: DONE early, not via cryptoret.\n" )); |
| 901 | (void)crypto_ret_kq_remove(krp); |
| 902 | } |
| 903 | mutex_exit(&crypto_mtx); |
| 904 | |
| 905 | if (krp->krp_status != 0) { |
| 906 | DPRINTF(("cryptodev_key: krp->krp_status 0x%08x\n" , |
| 907 | krp->krp_status)); |
| 908 | error = krp->krp_status; |
| 909 | goto fail; |
| 910 | } |
| 911 | |
| 912 | for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; |
| 913 | i++) { |
| 914 | size = (krp->krp_param[i].crp_nbits + 7) / 8; |
| 915 | if (size == 0) |
| 916 | continue; |
| 917 | error = copyout(krp->krp_param[i].crp_p, |
| 918 | kop->crk_param[i].crp_p, size); |
| 919 | if (error) { |
| 920 | DPRINTF(("cryptodev_key: copyout oparam %d failed, " |
| 921 | "error=%d\n" , i-krp->krp_iparams, error)); |
| 922 | goto fail; |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | fail: |
| 927 | kop->crk_status = krp->krp_status; |
| 928 | for (i = 0; i < CRK_MAXPARAM; i++) { |
| 929 | struct crparam *kp = &(krp->krp_param[i]); |
| 930 | if (krp->krp_param[i].crp_p) { |
| 931 | size = (kp->crp_nbits + 7) / 8; |
| 932 | KASSERT(size > 0); |
| 933 | (void)memset(kp->crp_p, 0, size); |
| 934 | kmem_free(kp->crp_p, size); |
| 935 | } |
| 936 | } |
| 937 | cv_destroy(&krp->krp_cv); |
| 938 | pool_put(&cryptkop_pool, krp); |
| 939 | DPRINTF(("cryptodev_key: error=0x%08x\n" , error)); |
| 940 | return error; |
| 941 | } |
| 942 | |
| 943 | /* ARGSUSED */ |
| 944 | static int |
| 945 | cryptof_close(struct file *fp) |
| 946 | { |
| 947 | struct fcrypt *fcr = fp->f_fcrypt; |
| 948 | struct csession *cse; |
| 949 | |
| 950 | mutex_enter(&crypto_mtx); |
| 951 | while ((cse = TAILQ_FIRST(&fcr->csessions))) { |
| 952 | TAILQ_REMOVE(&fcr->csessions, cse, next); |
| 953 | mutex_exit(&crypto_mtx); |
| 954 | (void)csefree(cse); |
| 955 | mutex_enter(&crypto_mtx); |
| 956 | } |
| 957 | seldestroy(&fcr->sinfo); |
| 958 | fp->f_fcrypt = NULL; |
| 959 | crypto_refcount--; |
| 960 | mutex_exit(&crypto_mtx); |
| 961 | |
| 962 | pool_put(&fcrpl, fcr); |
| 963 | return 0; |
| 964 | } |
| 965 | |
| 966 | /* needed for compatibility module */ |
| 967 | struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) |
| 968 | { |
| 969 | return csefind(fcr, ses); |
| 970 | } |
| 971 | |
| 972 | /* csefind: call with crypto_mtx held. */ |
| 973 | static struct csession * |
| 974 | csefind(struct fcrypt *fcr, u_int ses) |
| 975 | { |
| 976 | struct csession *cse, *cnext, *ret = NULL; |
| 977 | |
| 978 | KASSERT(mutex_owned(&crypto_mtx)); |
| 979 | TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) |
| 980 | if (cse->ses == ses) |
| 981 | ret = cse; |
| 982 | |
| 983 | return ret; |
| 984 | } |
| 985 | |
| 986 | /* csedelete: call with crypto_mtx held. */ |
| 987 | static int |
| 988 | csedelete(struct fcrypt *fcr, struct csession *cse_del) |
| 989 | { |
| 990 | struct csession *cse, *cnext; |
| 991 | int ret = 0; |
| 992 | |
| 993 | KASSERT(mutex_owned(&crypto_mtx)); |
| 994 | TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { |
| 995 | if (cse == cse_del) { |
| 996 | TAILQ_REMOVE(&fcr->csessions, cse, next); |
| 997 | ret = 1; |
| 998 | } |
| 999 | } |
| 1000 | return ret; |
| 1001 | } |
| 1002 | |
| 1003 | static struct csession * |
| 1004 | cseadd(struct fcrypt *fcr, struct csession *cse) |
| 1005 | { |
| 1006 | mutex_enter(&crypto_mtx); |
| 1007 | /* don't let session ID wrap! */ |
| 1008 | if (fcr->sesn + 1 == 0) return NULL; |
| 1009 | TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); |
| 1010 | cse->ses = fcr->sesn++; |
| 1011 | mutex_exit(&crypto_mtx); |
| 1012 | return cse; |
| 1013 | } |
| 1014 | |
| 1015 | static struct csession * |
| 1016 | csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, |
| 1017 | void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, |
| 1018 | u_int32_t comp_alg, const struct enc_xform *txform, |
| 1019 | const struct auth_hash *thash, const struct comp_algo *tcomp) |
| 1020 | { |
| 1021 | struct csession *cse; |
| 1022 | |
| 1023 | cse = pool_get(&csepl, PR_NOWAIT); |
| 1024 | if (cse == NULL) |
| 1025 | return NULL; |
| 1026 | cse->key = key; |
| 1027 | cse->keylen = keylen/8; |
| 1028 | cse->mackey = mackey; |
| 1029 | cse->mackeylen = mackeylen/8; |
| 1030 | cse->sid = sid; |
| 1031 | cse->cipher = cipher; |
| 1032 | cse->mac = mac; |
| 1033 | cse->comp_alg = comp_alg; |
| 1034 | cse->txform = txform; |
| 1035 | cse->thash = thash; |
| 1036 | cse->tcomp = tcomp; |
| 1037 | cse->error = 0; |
| 1038 | if (cseadd(fcr, cse)) |
| 1039 | return cse; |
| 1040 | else { |
| 1041 | pool_put(&csepl, cse); |
| 1042 | return NULL; |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | /* csefree: call with crypto_mtx held. */ |
| 1047 | static int |
| 1048 | csefree(struct csession *cse) |
| 1049 | { |
| 1050 | int error; |
| 1051 | |
| 1052 | error = crypto_freesession(cse->sid); |
| 1053 | if (cse->key) |
| 1054 | free(cse->key, M_XDATA); |
| 1055 | if (cse->mackey) |
| 1056 | free(cse->mackey, M_XDATA); |
| 1057 | pool_put(&csepl, cse); |
| 1058 | return error; |
| 1059 | } |
| 1060 | |
| 1061 | static int |
| 1062 | cryptoopen(dev_t dev, int flag, int mode, |
| 1063 | struct lwp *l) |
| 1064 | { |
| 1065 | file_t *fp; |
| 1066 | struct fcrypt *fcr; |
| 1067 | int fd, error; |
| 1068 | |
| 1069 | if (crypto_usercrypto == 0) |
| 1070 | return ENXIO; |
| 1071 | |
| 1072 | if ((error = fd_allocfile(&fp, &fd)) != 0) |
| 1073 | return error; |
| 1074 | |
| 1075 | fcr = pool_get(&fcrpl, PR_WAITOK); |
| 1076 | getnanotime(&fcr->btime); |
| 1077 | fcr->atime = fcr->mtime = fcr->btime; |
| 1078 | mutex_enter(&crypto_mtx); |
| 1079 | TAILQ_INIT(&fcr->csessions); |
| 1080 | TAILQ_INIT(&fcr->crp_ret_mq); |
| 1081 | TAILQ_INIT(&fcr->crp_ret_mkq); |
| 1082 | selinit(&fcr->sinfo); |
| 1083 | /* |
| 1084 | * Don't ever return session 0, to allow detection of |
| 1085 | * failed creation attempts with multi-create ioctl. |
| 1086 | */ |
| 1087 | fcr->sesn = 1; |
| 1088 | fcr->requestid = 1; |
| 1089 | crypto_refcount++; |
| 1090 | mutex_exit(&crypto_mtx); |
| 1091 | return fd_clone(fp, fd, flag, &cryptofops, fcr); |
| 1092 | } |
| 1093 | |
| 1094 | static int |
| 1095 | cryptoread(dev_t dev, struct uio *uio, int ioflag) |
| 1096 | { |
| 1097 | return EIO; |
| 1098 | } |
| 1099 | |
| 1100 | static int |
| 1101 | cryptowrite(dev_t dev, struct uio *uio, int ioflag) |
| 1102 | { |
| 1103 | return EIO; |
| 1104 | } |
| 1105 | |
| 1106 | int |
| 1107 | cryptoselect(dev_t dev, int rw, struct lwp *l) |
| 1108 | { |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | /*static*/ |
| 1113 | struct cdevsw crypto_cdevsw = { |
| 1114 | .d_open = cryptoopen, |
| 1115 | .d_close = noclose, |
| 1116 | .d_read = cryptoread, |
| 1117 | .d_write = cryptowrite, |
| 1118 | .d_ioctl = noioctl, |
| 1119 | .d_stop = nostop, |
| 1120 | .d_tty = notty, |
| 1121 | .d_poll = cryptoselect /*nopoll*/, |
| 1122 | .d_mmap = nommap, |
| 1123 | .d_kqfilter = nokqfilter, |
| 1124 | .d_discard = nodiscard, |
| 1125 | .d_flag = D_OTHER |
| 1126 | }; |
| 1127 | |
| 1128 | int |
| 1129 | cryptodev_mop(struct fcrypt *fcr, |
| 1130 | struct crypt_n_op * cnop, |
| 1131 | int count, struct lwp *l) |
| 1132 | { |
| 1133 | struct cryptop *crp = NULL; |
| 1134 | struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; |
| 1135 | int req, error=0; |
| 1136 | struct csession *cse; |
| 1137 | int flags=0; |
| 1138 | int iov_len; |
| 1139 | |
| 1140 | for (req = 0; req < count; req++) { |
| 1141 | mutex_enter(&crypto_mtx); |
| 1142 | cse = csefind(fcr, cnop[req].ses); |
| 1143 | if (cse == NULL) { |
| 1144 | DPRINTF(("csefind failed\n" )); |
| 1145 | cnop[req].status = EINVAL; |
| 1146 | mutex_exit(&crypto_mtx); |
| 1147 | continue; |
| 1148 | } |
| 1149 | mutex_exit(&crypto_mtx); |
| 1150 | |
| 1151 | if (cnop[req].len > 256*1024-4) { |
| 1152 | DPRINTF(("length failed\n" )); |
| 1153 | cnop[req].status = EINVAL; |
| 1154 | continue; |
| 1155 | } |
| 1156 | if (cse->txform) { |
| 1157 | if (cnop[req].len < cse->txform->blocksize - |
| 1158 | (cnop[req].iv ? 0 : cse->txform->ivsize) || |
| 1159 | (cnop[req].len - |
| 1160 | (cnop[req].iv ? 0 : cse->txform->ivsize)) |
| 1161 | % cse->txform->blocksize) { |
| 1162 | cnop[req].status = EINVAL; |
| 1163 | continue; |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | crp = crypto_getreq((cse->txform != NULL) + |
| 1168 | (cse->thash != NULL) + |
| 1169 | (cse->tcomp != NULL)); |
| 1170 | if (crp == NULL) { |
| 1171 | cnop[req].status = ENOMEM; |
| 1172 | goto bail; |
| 1173 | } |
| 1174 | |
| 1175 | iov_len = cnop[req].len; |
| 1176 | /* got a compression/decompression max size? */ |
| 1177 | if ((cse->tcomp) && cnop[req].dst_len) { |
| 1178 | if (iov_len < cnop[req].dst_len) { |
| 1179 | /* Need larger iov to deal with decompress */ |
| 1180 | iov_len = cnop[req].dst_len; |
| 1181 | } |
| 1182 | DPRINTF(("cryptodev_mop: iov_len -> %d for decompress\n" , iov_len)); |
| 1183 | } |
| 1184 | |
| 1185 | (void)memset(&crp->uio, 0, sizeof(crp->uio)); |
| 1186 | crp->uio.uio_iovcnt = 1; |
| 1187 | crp->uio.uio_resid = 0; |
| 1188 | crp->uio.uio_rw = UIO_WRITE; |
| 1189 | crp->uio.uio_iov = crp->iovec; |
| 1190 | UIO_SETUP_SYSSPACE(&crp->uio); |
| 1191 | memset(&crp->iovec, 0, sizeof(crp->iovec)); |
| 1192 | crp->uio.uio_iov[0].iov_len = iov_len; |
| 1193 | DPRINTF(("cryptodev_mop: kmem_alloc(%d) for iov \n" , iov_len)); |
| 1194 | crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); |
| 1195 | crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; |
| 1196 | |
| 1197 | if (cse->tcomp) { |
| 1198 | crdc = crp->crp_desc; |
| 1199 | } |
| 1200 | |
| 1201 | if (cse->thash) { |
| 1202 | crda = crdc ? crdc->crd_next : crp->crp_desc; |
| 1203 | if (cse->txform && crda) |
| 1204 | crde = crda->crd_next; |
| 1205 | } else { |
| 1206 | if (cse->txform) { |
| 1207 | crde = crdc ? crdc->crd_next : crp->crp_desc; |
| 1208 | } else if (!cse->tcomp) { |
| 1209 | error = EINVAL; |
| 1210 | goto bail; |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | if ((copyin(cnop[req].src, |
| 1215 | crp->uio.uio_iov[0].iov_base, cnop[req].len))) { |
| 1216 | cnop[req].status = EINVAL; |
| 1217 | goto bail; |
| 1218 | } |
| 1219 | |
| 1220 | if (crdc) { |
| 1221 | switch (cnop[req].op) { |
| 1222 | case COP_COMP: |
| 1223 | crdc->crd_flags |= CRD_F_COMP; |
| 1224 | break; |
| 1225 | case COP_DECOMP: |
| 1226 | crdc->crd_flags &= ~CRD_F_COMP; |
| 1227 | break; |
| 1228 | default: |
| 1229 | break; |
| 1230 | } |
| 1231 | /* more data to follow? */ |
| 1232 | if (cnop[req].flags & COP_F_MORE) { |
| 1233 | flags |= CRYPTO_F_MORE; |
| 1234 | } |
| 1235 | crdc->crd_len = cnop[req].len; |
| 1236 | crdc->crd_inject = 0; |
| 1237 | |
| 1238 | crdc->crd_alg = cse->comp_alg; |
| 1239 | crdc->crd_key = NULL; |
| 1240 | crdc->crd_klen = 0; |
| 1241 | DPRINTF(("cryptodev_mop[%d]: crdc setup for comp_alg %d" |
| 1242 | " len %d.\n" , |
| 1243 | (uint32_t)cse->sid, crdc->crd_alg, |
| 1244 | crdc->crd_len)); |
| 1245 | } |
| 1246 | |
| 1247 | if (crda) { |
| 1248 | crda->crd_skip = 0; |
| 1249 | crda->crd_len = cnop[req].len; |
| 1250 | crda->crd_inject = 0; /* ??? */ |
| 1251 | |
| 1252 | crda->crd_alg = cse->mac; |
| 1253 | crda->crd_key = cse->mackey; |
| 1254 | crda->crd_klen = cse->mackeylen * 8; |
| 1255 | } |
| 1256 | |
| 1257 | if (crde) { |
| 1258 | if (cnop[req].op == COP_ENCRYPT) |
| 1259 | crde->crd_flags |= CRD_F_ENCRYPT; |
| 1260 | else |
| 1261 | crde->crd_flags &= ~CRD_F_ENCRYPT; |
| 1262 | crde->crd_len = cnop[req].len; |
| 1263 | crde->crd_inject = 0; |
| 1264 | |
| 1265 | crde->crd_alg = cse->cipher; |
| 1266 | #ifdef notyet /* XXX must notify h/w driver new key, drain */ |
| 1267 | if(cnop[req].key && cnop[req].keylen) { |
| 1268 | crde->crd_key = malloc(cnop[req].keylen, |
| 1269 | M_XDATA, M_WAITOK); |
| 1270 | if((error = copyin(cnop[req].key, |
| 1271 | crde->crd_key, cnop[req].keylen))) { |
| 1272 | cnop[req].status = EINVAL; |
| 1273 | goto bail; |
| 1274 | } |
| 1275 | crde->crd_klen = cnop[req].keylen * 8; |
| 1276 | } else { ... } |
| 1277 | #endif |
| 1278 | crde->crd_key = cse->key; |
| 1279 | crde->crd_klen = cse->keylen * 8; |
| 1280 | } |
| 1281 | |
| 1282 | crp->crp_ilen = cnop[req].len; |
| 1283 | crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | |
| 1284 | (cnop[req].flags & COP_F_BATCH) | flags; |
| 1285 | crp->crp_buf = (void *)&crp->uio; |
| 1286 | crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; |
| 1287 | crp->crp_sid = cse->sid; |
| 1288 | crp->crp_opaque = (void *)cse; |
| 1289 | crp->fcrp = fcr; |
| 1290 | crp->dst = cnop[req].dst; |
| 1291 | crp->len = cnop[req].len; /* input len, iov may be larger */ |
| 1292 | crp->mac = cnop[req].mac; |
| 1293 | DPRINTF(("cryptodev_mop: iov_base %p dst %p len %d mac %p\n" , |
| 1294 | crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, |
| 1295 | crp->mac)); |
| 1296 | |
| 1297 | if (cnop[req].iv) { |
| 1298 | if (crde == NULL) { |
| 1299 | cnop[req].status = EINVAL; |
| 1300 | goto bail; |
| 1301 | } |
| 1302 | if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ |
| 1303 | cnop[req].status = EINVAL; |
| 1304 | goto bail; |
| 1305 | } |
| 1306 | if ((error = copyin(cnop[req].iv, crp->tmp_iv, |
| 1307 | cse->txform->ivsize))) { |
| 1308 | cnop[req].status = EINVAL; |
| 1309 | goto bail; |
| 1310 | } |
| 1311 | (void)memcpy(crde->crd_iv, crp->tmp_iv, |
| 1312 | cse->txform->ivsize); |
| 1313 | crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; |
| 1314 | crde->crd_skip = 0; |
| 1315 | } else if (crde) { |
| 1316 | if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ |
| 1317 | crde->crd_skip = 0; |
| 1318 | } else { |
| 1319 | if (!(crde->crd_flags & CRD_F_ENCRYPT)) |
| 1320 | crde->crd_flags |= CRD_F_IV_PRESENT; |
| 1321 | crde->crd_skip = cse->txform->ivsize; |
| 1322 | crde->crd_len -= cse->txform->ivsize; |
| 1323 | } |
| 1324 | } |
| 1325 | |
| 1326 | if (cnop[req].mac) { |
| 1327 | if (crda == NULL) { |
| 1328 | cnop[req].status = EINVAL; |
| 1329 | goto bail; |
| 1330 | } |
| 1331 | crp->crp_mac=cse->tmp_mac; |
| 1332 | } |
| 1333 | cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); |
| 1334 | crp->crp_reqid = cnop[req].reqid; |
| 1335 | crp->crp_usropaque = cnop[req].opaque; |
| 1336 | cv_init(&crp->crp_cv, "crydev" ); |
| 1337 | #ifdef notyet |
| 1338 | eagain: |
| 1339 | #endif |
| 1340 | cnop[req].status = crypto_dispatch(crp); |
| 1341 | mutex_enter(&crypto_mtx); /* XXX why mutex? */ |
| 1342 | |
| 1343 | switch (cnop[req].status) { |
| 1344 | #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ |
| 1345 | case EAGAIN: |
| 1346 | mutex_exit(&crypto_mtx); |
| 1347 | goto eagain; |
| 1348 | break; |
| 1349 | #endif |
| 1350 | case 0: |
| 1351 | break; |
| 1352 | default: |
| 1353 | DPRINTF(("cryptodev_op: not waiting, error.\n" )); |
| 1354 | mutex_exit(&crypto_mtx); |
| 1355 | cv_destroy(&crp->crp_cv); |
| 1356 | goto bail; |
| 1357 | } |
| 1358 | |
| 1359 | mutex_exit(&crypto_mtx); |
| 1360 | cv_destroy(&crp->crp_cv); |
| 1361 | bail: |
| 1362 | if (cnop[req].status) { |
| 1363 | if (crp) { |
| 1364 | if (crp->uio.uio_iov[0].iov_base) { |
| 1365 | kmem_free(crp->uio.uio_iov[0].iov_base, |
| 1366 | crp->uio.uio_iov[0].iov_len); |
| 1367 | } |
| 1368 | crypto_freereq(crp); |
| 1369 | } |
| 1370 | error = 0; |
| 1371 | } |
| 1372 | } |
| 1373 | return error; |
| 1374 | } |
| 1375 | |
| 1376 | static int |
| 1377 | cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) |
| 1378 | { |
| 1379 | struct cryptkop *krp = NULL; |
| 1380 | int error = EINVAL; |
| 1381 | int in, out, size, i, req; |
| 1382 | |
| 1383 | for (req = 0; req < count; req++) { |
| 1384 | if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) |
| 1385 | return EFBIG; |
| 1386 | |
| 1387 | in = kop[req].crk_iparams; |
| 1388 | out = kop[req].crk_oparams; |
| 1389 | switch (kop[req].crk_op) { |
| 1390 | case CRK_MOD_EXP: |
| 1391 | if (in == 3 && out == 1) |
| 1392 | break; |
| 1393 | kop[req].crk_status = EINVAL; |
| 1394 | continue; |
| 1395 | case CRK_MOD_EXP_CRT: |
| 1396 | if (in == 6 && out == 1) |
| 1397 | break; |
| 1398 | kop[req].crk_status = EINVAL; |
| 1399 | continue; |
| 1400 | case CRK_DSA_SIGN: |
| 1401 | if (in == 5 && out == 2) |
| 1402 | break; |
| 1403 | kop[req].crk_status = EINVAL; |
| 1404 | continue; |
| 1405 | case CRK_DSA_VERIFY: |
| 1406 | if (in == 7 && out == 0) |
| 1407 | break; |
| 1408 | kop[req].crk_status = EINVAL; |
| 1409 | continue; |
| 1410 | case CRK_DH_COMPUTE_KEY: |
| 1411 | if (in == 3 && out == 1) |
| 1412 | break; |
| 1413 | kop[req].crk_status = EINVAL; |
| 1414 | continue; |
| 1415 | case CRK_MOD_ADD: |
| 1416 | if (in == 3 && out == 1) |
| 1417 | break; |
| 1418 | kop[req].crk_status = EINVAL; |
| 1419 | continue; |
| 1420 | case CRK_MOD_ADDINV: |
| 1421 | if (in == 2 && out == 1) |
| 1422 | break; |
| 1423 | kop[req].crk_status = EINVAL; |
| 1424 | continue; |
| 1425 | case CRK_MOD_SUB: |
| 1426 | if (in == 3 && out == 1) |
| 1427 | break; |
| 1428 | kop[req].crk_status = EINVAL; |
| 1429 | continue; |
| 1430 | case CRK_MOD_MULT: |
| 1431 | if (in == 3 && out == 1) |
| 1432 | break; |
| 1433 | kop[req].crk_status = EINVAL; |
| 1434 | continue; |
| 1435 | case CRK_MOD_MULTINV: |
| 1436 | if (in == 2 && out == 1) |
| 1437 | break; |
| 1438 | kop[req].crk_status = EINVAL; |
| 1439 | continue; |
| 1440 | case CRK_MOD: |
| 1441 | if (in == 2 && out == 1) |
| 1442 | break; |
| 1443 | kop[req].crk_status = EINVAL; |
| 1444 | continue; |
| 1445 | default: |
| 1446 | kop[req].crk_status = EINVAL; |
| 1447 | continue; |
| 1448 | } |
| 1449 | |
| 1450 | krp = pool_get(&cryptkop_pool, PR_WAITOK); |
| 1451 | (void)memset(krp, 0, sizeof *krp); |
| 1452 | cv_init(&krp->krp_cv, "crykdev" ); |
| 1453 | krp->krp_op = kop[req].crk_op; |
| 1454 | krp->krp_status = kop[req].crk_status; |
| 1455 | krp->krp_iparams = kop[req].crk_iparams; |
| 1456 | krp->krp_oparams = kop[req].crk_oparams; |
| 1457 | krp->krp_status = 0; |
| 1458 | krp->krp_callback = |
| 1459 | (int (*) (struct cryptkop *)) cryptodevkey_mcb; |
| 1460 | (void)memcpy(krp->crk_param, kop[req].crk_param, |
| 1461 | sizeof(kop[req].crk_param)); |
| 1462 | |
| 1463 | krp->krp_flags = CRYPTO_F_CBIMM; |
| 1464 | |
| 1465 | for (i = 0; i < CRK_MAXPARAM; i++) |
| 1466 | krp->krp_param[i].crp_nbits = |
| 1467 | kop[req].crk_param[i].crp_nbits; |
| 1468 | for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { |
| 1469 | size = (krp->krp_param[i].crp_nbits + 7) / 8; |
| 1470 | if (size == 0) |
| 1471 | continue; |
| 1472 | krp->krp_param[i].crp_p = |
| 1473 | kmem_alloc(size, KM_SLEEP); |
| 1474 | if (i >= krp->krp_iparams) |
| 1475 | continue; |
| 1476 | kop[req].crk_status = |
| 1477 | copyin(kop[req].crk_param[i].crp_p, |
| 1478 | krp->krp_param[i].crp_p, size); |
| 1479 | if (kop[req].crk_status) |
| 1480 | goto fail; |
| 1481 | } |
| 1482 | krp->fcrp = fcr; |
| 1483 | |
| 1484 | kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); |
| 1485 | krp->krp_reqid = kop[req].crk_reqid; |
| 1486 | krp->krp_usropaque = kop[req].crk_opaque; |
| 1487 | |
| 1488 | kop[req].crk_status = crypto_kdispatch(krp); |
| 1489 | if (kop[req].crk_status != 0) { |
| 1490 | goto fail; |
| 1491 | } |
| 1492 | |
| 1493 | fail: |
| 1494 | if(kop[req].crk_status) { |
| 1495 | if (krp) { |
| 1496 | kop[req].crk_status = krp->krp_status; |
| 1497 | for (i = 0; i < CRK_MAXPARAM; i++) { |
| 1498 | struct crparam *kp = |
| 1499 | &(krp->krp_param[i]); |
| 1500 | if (kp->crp_p) { |
| 1501 | size = (kp->crp_nbits + 7) / 8; |
| 1502 | KASSERT(size > 0); |
| 1503 | memset(kp->crp_p, 0, size); |
| 1504 | kmem_free(kp->crp_p, size); |
| 1505 | } |
| 1506 | } |
| 1507 | cv_destroy(&krp->krp_cv); |
| 1508 | pool_put(&cryptkop_pool, krp); |
| 1509 | } |
| 1510 | } |
| 1511 | error = 0; |
| 1512 | } |
| 1513 | DPRINTF(("cryptodev_key: error=0x%08x\n" , error)); |
| 1514 | return error; |
| 1515 | } |
| 1516 | |
| 1517 | int |
| 1518 | cryptodev_session(struct fcrypt *fcr, struct session_op *sop) |
| 1519 | { |
| 1520 | struct cryptoini cria, crie; |
| 1521 | struct cryptoini cric; /* compressor */ |
| 1522 | struct cryptoini *crihead = NULL; |
| 1523 | const struct enc_xform *txform = NULL; |
| 1524 | const struct auth_hash *thash = NULL; |
| 1525 | const struct comp_algo *tcomp = NULL; |
| 1526 | struct csession *cse; |
| 1527 | u_int64_t sid; |
| 1528 | int error = 0; |
| 1529 | |
| 1530 | DPRINTF(("cryptodev_session() cipher=%d, mac=%d\n" , sop->cipher, sop->mac)); |
| 1531 | |
| 1532 | /* XXX there must be a way to not embed the list of xforms here */ |
| 1533 | switch (sop->cipher) { |
| 1534 | case 0: |
| 1535 | break; |
| 1536 | case CRYPTO_DES_CBC: |
| 1537 | txform = &enc_xform_des; |
| 1538 | break; |
| 1539 | case CRYPTO_3DES_CBC: |
| 1540 | txform = &enc_xform_3des; |
| 1541 | break; |
| 1542 | case CRYPTO_BLF_CBC: |
| 1543 | txform = &enc_xform_blf; |
| 1544 | break; |
| 1545 | case CRYPTO_CAST_CBC: |
| 1546 | txform = &enc_xform_cast5; |
| 1547 | break; |
| 1548 | case CRYPTO_SKIPJACK_CBC: |
| 1549 | txform = &enc_xform_skipjack; |
| 1550 | break; |
| 1551 | case CRYPTO_AES_CBC: |
| 1552 | txform = &enc_xform_rijndael128; |
| 1553 | break; |
| 1554 | case CRYPTO_CAMELLIA_CBC: |
| 1555 | txform = &enc_xform_camellia; |
| 1556 | break; |
| 1557 | case CRYPTO_AES_CTR: |
| 1558 | txform = &enc_xform_aes_ctr; |
| 1559 | break; |
| 1560 | case CRYPTO_AES_GCM_16: |
| 1561 | txform = &enc_xform_aes_gcm; |
| 1562 | break; |
| 1563 | case CRYPTO_AES_GMAC: |
| 1564 | txform = &enc_xform_aes_gmac; |
| 1565 | break; |
| 1566 | case CRYPTO_NULL_CBC: |
| 1567 | txform = &enc_xform_null; |
| 1568 | break; |
| 1569 | case CRYPTO_ARC4: |
| 1570 | txform = &enc_xform_arc4; |
| 1571 | break; |
| 1572 | default: |
| 1573 | DPRINTF(("Invalid cipher %d\n" , sop->cipher)); |
| 1574 | return EINVAL; |
| 1575 | } |
| 1576 | |
| 1577 | switch (sop->comp_alg) { |
| 1578 | case 0: |
| 1579 | break; |
| 1580 | case CRYPTO_DEFLATE_COMP: |
| 1581 | tcomp = &comp_algo_deflate; |
| 1582 | break; |
| 1583 | case CRYPTO_GZIP_COMP: |
| 1584 | tcomp = &comp_algo_gzip; |
| 1585 | DPRINTF(("cryptodev_session() tcomp for GZIP\n" )); |
| 1586 | break; |
| 1587 | default: |
| 1588 | DPRINTF(("Invalid compression alg %d\n" , sop->comp_alg)); |
| 1589 | return EINVAL; |
| 1590 | } |
| 1591 | |
| 1592 | switch (sop->mac) { |
| 1593 | case 0: |
| 1594 | break; |
| 1595 | case CRYPTO_MD5_HMAC: |
| 1596 | thash = &auth_hash_hmac_md5; |
| 1597 | break; |
| 1598 | case CRYPTO_SHA1_HMAC: |
| 1599 | thash = &auth_hash_hmac_sha1; |
| 1600 | break; |
| 1601 | case CRYPTO_MD5_HMAC_96: |
| 1602 | thash = &auth_hash_hmac_md5_96; |
| 1603 | break; |
| 1604 | case CRYPTO_SHA1_HMAC_96: |
| 1605 | thash = &auth_hash_hmac_sha1_96; |
| 1606 | break; |
| 1607 | case CRYPTO_SHA2_HMAC: |
| 1608 | /* XXX switching on key length seems questionable */ |
| 1609 | if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { |
| 1610 | thash = &auth_hash_hmac_sha2_256; |
| 1611 | } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { |
| 1612 | thash = &auth_hash_hmac_sha2_384; |
| 1613 | } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { |
| 1614 | thash = &auth_hash_hmac_sha2_512; |
| 1615 | } else { |
| 1616 | DPRINTF(("Invalid mackeylen %d\n" , sop->mackeylen)); |
| 1617 | return EINVAL; |
| 1618 | } |
| 1619 | break; |
| 1620 | case CRYPTO_RIPEMD160_HMAC: |
| 1621 | thash = &auth_hash_hmac_ripemd_160; |
| 1622 | break; |
| 1623 | case CRYPTO_RIPEMD160_HMAC_96: |
| 1624 | thash = &auth_hash_hmac_ripemd_160_96; |
| 1625 | break; |
| 1626 | case CRYPTO_MD5: |
| 1627 | thash = &auth_hash_md5; |
| 1628 | break; |
| 1629 | case CRYPTO_SHA1: |
| 1630 | thash = &auth_hash_sha1; |
| 1631 | break; |
| 1632 | case CRYPTO_AES_XCBC_MAC_96: |
| 1633 | thash = &auth_hash_aes_xcbc_mac_96; |
| 1634 | break; |
| 1635 | case CRYPTO_AES_128_GMAC: |
| 1636 | thash = &auth_hash_gmac_aes_128; |
| 1637 | break; |
| 1638 | case CRYPTO_AES_192_GMAC: |
| 1639 | thash = &auth_hash_gmac_aes_192; |
| 1640 | break; |
| 1641 | case CRYPTO_AES_256_GMAC: |
| 1642 | thash = &auth_hash_gmac_aes_256; |
| 1643 | break; |
| 1644 | case CRYPTO_NULL_HMAC: |
| 1645 | thash = &auth_hash_null; |
| 1646 | break; |
| 1647 | default: |
| 1648 | DPRINTF(("Invalid mac %d\n" , sop->mac)); |
| 1649 | return EINVAL; |
| 1650 | } |
| 1651 | |
| 1652 | memset(&crie, 0, sizeof(crie)); |
| 1653 | memset(&cria, 0, sizeof(cria)); |
| 1654 | memset(&cric, 0, sizeof(cric)); |
| 1655 | |
| 1656 | if (tcomp) { |
| 1657 | cric.cri_alg = tcomp->type; |
| 1658 | cric.cri_klen = 0; |
| 1659 | DPRINTF(("tcomp->type = %d\n" , tcomp->type)); |
| 1660 | |
| 1661 | crihead = &cric; |
| 1662 | if (txform) { |
| 1663 | cric.cri_next = &crie; |
| 1664 | } else if (thash) { |
| 1665 | cric.cri_next = &cria; |
| 1666 | } |
| 1667 | } |
| 1668 | |
| 1669 | if (txform) { |
| 1670 | crie.cri_alg = txform->type; |
| 1671 | crie.cri_klen = sop->keylen * 8; |
| 1672 | if (sop->keylen > txform->maxkey || |
| 1673 | sop->keylen < txform->minkey) { |
| 1674 | DPRINTF(("keylen %d not in [%d,%d]\n" , |
| 1675 | sop->keylen, txform->minkey, txform->maxkey)); |
| 1676 | error = EINVAL; |
| 1677 | goto bail; |
| 1678 | } |
| 1679 | |
| 1680 | crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); |
| 1681 | if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) |
| 1682 | goto bail; |
| 1683 | if (!crihead) { |
| 1684 | crihead = &crie; |
| 1685 | } |
| 1686 | if (thash) |
| 1687 | crie.cri_next = &cria; |
| 1688 | } |
| 1689 | |
| 1690 | if (thash) { |
| 1691 | cria.cri_alg = thash->type; |
| 1692 | cria.cri_klen = sop->mackeylen * 8; |
| 1693 | if (sop->mackeylen != thash->keysize) { |
| 1694 | DPRINTF(("mackeylen %d != keysize %d\n" , |
| 1695 | sop->mackeylen, thash->keysize)); |
| 1696 | error = EINVAL; |
| 1697 | goto bail; |
| 1698 | } |
| 1699 | if (cria.cri_klen) { |
| 1700 | cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, |
| 1701 | M_WAITOK); |
| 1702 | if ((error = copyin(sop->mackey, cria.cri_key, |
| 1703 | cria.cri_klen / 8))) { |
| 1704 | goto bail; |
| 1705 | } |
| 1706 | } |
| 1707 | if (!crihead) { |
| 1708 | crihead = &cria; |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | error = crypto_newsession(&sid, crihead, crypto_devallowsoft); |
| 1713 | if (!error) { |
| 1714 | DPRINTF(("cryptodev_session: got session %d\n" , (uint32_t)sid)); |
| 1715 | cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, |
| 1716 | cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, |
| 1717 | (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); |
| 1718 | if (cse != NULL) { |
| 1719 | sop->ses = cse->ses; |
| 1720 | } else { |
| 1721 | DPRINTF(("csecreate failed\n" )); |
| 1722 | crypto_freesession(sid); |
| 1723 | error = EINVAL; |
| 1724 | } |
| 1725 | } else { |
| 1726 | DPRINTF(("SIOCSESSION violates kernel parameters %d\n" , |
| 1727 | error)); |
| 1728 | } |
| 1729 | bail: |
| 1730 | if (error) { |
| 1731 | if (crie.cri_key) { |
| 1732 | memset(crie.cri_key, 0, crie.cri_klen / 8); |
| 1733 | free(crie.cri_key, M_XDATA); |
| 1734 | } |
| 1735 | if (cria.cri_key) { |
| 1736 | memset(cria.cri_key, 0, cria.cri_klen / 8); |
| 1737 | free(cria.cri_key, M_XDATA); |
| 1738 | } |
| 1739 | } |
| 1740 | return error; |
| 1741 | } |
| 1742 | |
| 1743 | int |
| 1744 | cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, |
| 1745 | int count) |
| 1746 | { |
| 1747 | int i; |
| 1748 | |
| 1749 | for (i = 0; i < count; i++, sn_ops++) { |
| 1750 | struct session_op s_op; |
| 1751 | s_op.cipher = sn_ops->cipher; |
| 1752 | s_op.mac = sn_ops->mac; |
| 1753 | s_op.keylen = sn_ops->keylen; |
| 1754 | s_op.key = sn_ops->key; |
| 1755 | s_op.mackeylen = sn_ops->mackeylen; |
| 1756 | s_op.mackey = sn_ops->mackey; |
| 1757 | |
| 1758 | sn_ops->status = cryptodev_session(fcr, &s_op); |
| 1759 | sn_ops->ses = s_op.ses; |
| 1760 | } |
| 1761 | |
| 1762 | return 0; |
| 1763 | } |
| 1764 | |
| 1765 | static int |
| 1766 | cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) |
| 1767 | { |
| 1768 | struct csession *cse; |
| 1769 | int req, error = 0; |
| 1770 | |
| 1771 | mutex_enter(&crypto_mtx); |
| 1772 | for(req = 0; req < count; req++) { |
| 1773 | cse = csefind(fcr, sesid[req]); |
| 1774 | if (cse == NULL) |
| 1775 | continue; |
| 1776 | csedelete(fcr, cse); |
| 1777 | mutex_exit(&crypto_mtx); |
| 1778 | error = csefree(cse); |
| 1779 | mutex_enter(&crypto_mtx); |
| 1780 | } |
| 1781 | mutex_exit(&crypto_mtx); |
| 1782 | return error; |
| 1783 | } |
| 1784 | |
| 1785 | /* |
| 1786 | * collect as many completed requests as are availble, or count completed |
| 1787 | * requests whichever is less. |
| 1788 | * return the number of requests. |
| 1789 | */ |
| 1790 | static int |
| 1791 | cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, |
| 1792 | int count) |
| 1793 | { |
| 1794 | struct cryptop *crp = NULL; |
| 1795 | struct cryptkop *krp = NULL; |
| 1796 | struct csession *cse; |
| 1797 | int i, size, req = 0; |
| 1798 | int completed=0; |
| 1799 | |
| 1800 | /* On queue so nobody else can grab them |
| 1801 | * and copyout can be delayed-- no locking */ |
| 1802 | TAILQ_HEAD(, cryptop) crp_delfree_q = |
| 1803 | TAILQ_HEAD_INITIALIZER(crp_delfree_q); |
| 1804 | TAILQ_HEAD(, cryptkop) krp_delfree_q = |
| 1805 | TAILQ_HEAD_INITIALIZER(krp_delfree_q); |
| 1806 | |
| 1807 | /* at this point we do not know which response user is requesting for |
| 1808 | * (symmetric or asymmetric) so we copyout one from each i.e if the |
| 1809 | * count is 2 then 1 from symmetric and 1 from asymmetric queue and |
| 1810 | * if 3 then 2 symmetric and 1 asymmetric and so on */ |
| 1811 | |
| 1812 | /* pull off a list of requests while protected from changes */ |
| 1813 | mutex_enter(&crypto_mtx); |
| 1814 | while (req < count) { |
| 1815 | crp = TAILQ_FIRST(&fcr->crp_ret_mq); |
| 1816 | if (crp) { |
| 1817 | TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); |
| 1818 | TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); |
| 1819 | cse = (struct csession *)crp->crp_opaque; |
| 1820 | |
| 1821 | /* see if the session is still valid */ |
| 1822 | cse = csefind(fcr, cse->ses); |
| 1823 | if (cse != NULL) { |
| 1824 | crypt_res[req].status = 0; |
| 1825 | } else { |
| 1826 | DPRINTF(("csefind failed\n" )); |
| 1827 | crypt_res[req].status = EINVAL; |
| 1828 | } |
| 1829 | req++; |
| 1830 | } |
| 1831 | if(req < count) { |
| 1832 | crypt_res[req].status = 0; |
| 1833 | krp = TAILQ_FIRST(&fcr->crp_ret_mkq); |
| 1834 | if (krp) { |
| 1835 | TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); |
| 1836 | TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); |
| 1837 | req++; |
| 1838 | } |
| 1839 | } |
| 1840 | } |
| 1841 | mutex_exit(&crypto_mtx); |
| 1842 | |
| 1843 | /* now do all the work outside the mutex */ |
| 1844 | for(req=0; req < count ;) { |
| 1845 | crp = TAILQ_FIRST(&crp_delfree_q); |
| 1846 | if (crp) { |
| 1847 | if (crypt_res[req].status != 0) { |
| 1848 | /* csefind failed during collection */ |
| 1849 | goto bail; |
| 1850 | } |
| 1851 | cse = (struct csession *)crp->crp_opaque; |
| 1852 | crypt_res[req].reqid = crp->crp_reqid; |
| 1853 | crypt_res[req].opaque = crp->crp_usropaque; |
| 1854 | completed++; |
| 1855 | |
| 1856 | if (crp->crp_etype != 0) { |
| 1857 | crypt_res[req].status = crp->crp_etype; |
| 1858 | goto bail; |
| 1859 | } |
| 1860 | |
| 1861 | if (cse->error) { |
| 1862 | crypt_res[req].status = cse->error; |
| 1863 | goto bail; |
| 1864 | } |
| 1865 | |
| 1866 | if (crp->dst && (crypt_res[req].status = |
| 1867 | copyout(crp->uio.uio_iov[0].iov_base, crp->dst, |
| 1868 | crp->len))) |
| 1869 | goto bail; |
| 1870 | |
| 1871 | if (crp->mac && (crypt_res[req].status = |
| 1872 | copyout(crp->crp_mac, crp->mac, |
| 1873 | cse->thash->authsize))) |
| 1874 | goto bail; |
| 1875 | |
| 1876 | bail: |
| 1877 | TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); |
| 1878 | kmem_free(crp->uio.uio_iov[0].iov_base, |
| 1879 | crp->uio.uio_iov[0].iov_len); |
| 1880 | crypto_freereq(crp); |
| 1881 | req++; |
| 1882 | } |
| 1883 | |
| 1884 | if (req < count) { |
| 1885 | krp = TAILQ_FIRST(&krp_delfree_q); |
| 1886 | if (krp) { |
| 1887 | crypt_res[req].reqid = krp->krp_reqid; |
| 1888 | crypt_res[req].opaque = krp->krp_usropaque; |
| 1889 | completed++; |
| 1890 | if (krp->krp_status != 0) { |
| 1891 | DPRINTF(("cryptodev_key: " |
| 1892 | "krp->krp_status 0x%08x\n" , |
| 1893 | krp->krp_status)); |
| 1894 | crypt_res[req].status = krp->krp_status; |
| 1895 | goto fail; |
| 1896 | } |
| 1897 | |
| 1898 | for (i = krp->krp_iparams; i < krp->krp_iparams |
| 1899 | + krp->krp_oparams; i++) { |
| 1900 | size = (krp->krp_param[i].crp_nbits |
| 1901 | + 7) / 8; |
| 1902 | if (size == 0) |
| 1903 | continue; |
| 1904 | crypt_res[req].status = copyout |
| 1905 | (krp->krp_param[i].crp_p, |
| 1906 | krp->crk_param[i].crp_p, size); |
| 1907 | if (crypt_res[req].status) { |
| 1908 | DPRINTF(("cryptodev_key: " |
| 1909 | "copyout oparam %d failed, " |
| 1910 | "error=%d\n" , |
| 1911 | i - krp->krp_iparams, |
| 1912 | crypt_res[req].status)); |
| 1913 | goto fail; |
| 1914 | } |
| 1915 | } |
| 1916 | fail: |
| 1917 | TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); |
| 1918 | /* not sure what to do for this */ |
| 1919 | /* kop[req].crk_status = krp->krp_status; */ |
| 1920 | for (i = 0; i < CRK_MAXPARAM; i++) { |
| 1921 | struct crparam *kp = &(krp->krp_param[i]); |
| 1922 | if (kp->crp_p) { |
| 1923 | size = (kp->crp_nbits + 7) / 8; |
| 1924 | KASSERT(size > 0); |
| 1925 | (void)memset(kp->crp_p, 0, size); |
| 1926 | kmem_free(kp->crp_p, size); |
| 1927 | } |
| 1928 | } |
| 1929 | cv_destroy(&krp->krp_cv); |
| 1930 | pool_put(&cryptkop_pool, krp); |
| 1931 | req++; |
| 1932 | } |
| 1933 | } |
| 1934 | } |
| 1935 | |
| 1936 | return completed; |
| 1937 | } |
| 1938 | |
| 1939 | static int |
| 1940 | cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) |
| 1941 | { |
| 1942 | struct cryptop *crp = NULL, *cnext; |
| 1943 | struct cryptkop *krp = NULL, *knext; |
| 1944 | struct csession *cse; |
| 1945 | int i, size, req = 0; |
| 1946 | |
| 1947 | mutex_enter(&crypto_mtx); |
| 1948 | /* Here we dont know for which request the user is requesting the |
| 1949 | * response so checking in both the queues */ |
| 1950 | TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { |
| 1951 | if(crp && (crp->crp_reqid == crypt_res->reqid)) { |
| 1952 | cse = (struct csession *)crp->crp_opaque; |
| 1953 | crypt_res->opaque = crp->crp_usropaque; |
| 1954 | cse = csefind(fcr, cse->ses); |
| 1955 | if (cse == NULL) { |
| 1956 | DPRINTF(("csefind failed\n" )); |
| 1957 | crypt_res->status = EINVAL; |
| 1958 | goto bail; |
| 1959 | } |
| 1960 | |
| 1961 | if (crp->crp_etype != 0) { |
| 1962 | crypt_res->status = crp->crp_etype; |
| 1963 | goto bail; |
| 1964 | } |
| 1965 | |
| 1966 | if (cse->error) { |
| 1967 | crypt_res->status = cse->error; |
| 1968 | goto bail; |
| 1969 | } |
| 1970 | |
| 1971 | if (crp->dst && (crypt_res->status = |
| 1972 | copyout(crp->uio.uio_iov[0].iov_base, |
| 1973 | crp->dst, crp->len))) |
| 1974 | goto bail; |
| 1975 | |
| 1976 | if (crp->mac && (crypt_res->status = |
| 1977 | copyout(crp->crp_mac, crp->mac, |
| 1978 | cse->thash->authsize))) |
| 1979 | goto bail; |
| 1980 | bail: |
| 1981 | TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); |
| 1982 | |
| 1983 | mutex_exit(&crypto_mtx); |
| 1984 | crypto_freereq(crp); |
| 1985 | return 0; |
| 1986 | } |
| 1987 | } |
| 1988 | |
| 1989 | TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { |
| 1990 | if(krp && (krp->krp_reqid == crypt_res->reqid)) { |
| 1991 | crypt_res[req].opaque = krp->krp_usropaque; |
| 1992 | if (krp->krp_status != 0) { |
| 1993 | DPRINTF(("cryptodev_key: " |
| 1994 | "krp->krp_status 0x%08x\n" , |
| 1995 | krp->krp_status)); |
| 1996 | crypt_res[req].status = krp->krp_status; |
| 1997 | goto fail; |
| 1998 | } |
| 1999 | |
| 2000 | for (i = krp->krp_iparams; i < krp->krp_iparams + |
| 2001 | krp->krp_oparams; i++) { |
| 2002 | size = (krp->krp_param[i].crp_nbits + 7) / 8; |
| 2003 | if (size == 0) |
| 2004 | continue; |
| 2005 | crypt_res[req].status = copyout( |
| 2006 | krp->krp_param[i].crp_p, |
| 2007 | krp->crk_param[i].crp_p, size); |
| 2008 | if (crypt_res[req].status) { |
| 2009 | DPRINTF(("cryptodev_key: copyout oparam" |
| 2010 | "%d failed, error=%d\n" , |
| 2011 | i - krp->krp_iparams, |
| 2012 | crypt_res[req].status)); |
| 2013 | goto fail; |
| 2014 | } |
| 2015 | } |
| 2016 | fail: |
| 2017 | TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); |
| 2018 | mutex_exit(&crypto_mtx); |
| 2019 | /* not sure what to do for this */ |
| 2020 | /* kop[req].crk_status = krp->krp_status; */ |
| 2021 | for (i = 0; i < CRK_MAXPARAM; i++) { |
| 2022 | struct crparam *kp = &(krp->krp_param[i]); |
| 2023 | if (kp->crp_p) { |
| 2024 | size = (kp->crp_nbits + 7) / 8; |
| 2025 | KASSERT(size > 0); |
| 2026 | memset(kp->crp_p, 0, size); |
| 2027 | kmem_free(kp->crp_p, size); |
| 2028 | } |
| 2029 | } |
| 2030 | cv_destroy(&krp->krp_cv); |
| 2031 | pool_put(&cryptkop_pool, krp); |
| 2032 | return 0; |
| 2033 | } |
| 2034 | } |
| 2035 | mutex_exit(&crypto_mtx); |
| 2036 | return EINPROGRESS; |
| 2037 | } |
| 2038 | |
| 2039 | static int |
| 2040 | cryptof_stat(struct file *fp, struct stat *st) |
| 2041 | { |
| 2042 | struct fcrypt *fcr = fp->f_fcrypt; |
| 2043 | |
| 2044 | (void)memset(st, 0, sizeof(*st)); |
| 2045 | |
| 2046 | mutex_enter(&crypto_mtx); |
| 2047 | st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); |
| 2048 | st->st_atimespec = fcr->atime; |
| 2049 | st->st_mtimespec = fcr->mtime; |
| 2050 | st->st_ctimespec = st->st_birthtimespec = fcr->btime; |
| 2051 | st->st_uid = kauth_cred_geteuid(fp->f_cred); |
| 2052 | st->st_gid = kauth_cred_getegid(fp->f_cred); |
| 2053 | mutex_exit(&crypto_mtx); |
| 2054 | |
| 2055 | return 0; |
| 2056 | } |
| 2057 | |
| 2058 | static int |
| 2059 | cryptof_poll(struct file *fp, int events) |
| 2060 | { |
| 2061 | struct fcrypt *fcr = fp->f_fcrypt; |
| 2062 | int revents = 0; |
| 2063 | |
| 2064 | if (!(events & (POLLIN | POLLRDNORM))) { |
| 2065 | /* only support read and POLLIN */ |
| 2066 | return 0; |
| 2067 | } |
| 2068 | |
| 2069 | mutex_enter(&crypto_mtx); |
| 2070 | if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { |
| 2071 | /* no completed requests pending, save the poll for later */ |
| 2072 | selrecord(curlwp, &fcr->sinfo); |
| 2073 | } else { |
| 2074 | /* let the app(s) know that there are completed requests */ |
| 2075 | revents = events & (POLLIN | POLLRDNORM); |
| 2076 | } |
| 2077 | mutex_exit(&crypto_mtx); |
| 2078 | |
| 2079 | return revents; |
| 2080 | } |
| 2081 | |
| 2082 | /* |
| 2083 | * Pseudo-device initialization routine for /dev/crypto |
| 2084 | */ |
| 2085 | void |
| 2086 | cryptoattach(int num) |
| 2087 | { |
| 2088 | crypto_init(); |
| 2089 | |
| 2090 | pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl" , |
| 2091 | NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ |
| 2092 | pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl" , |
| 2093 | NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ |
| 2094 | |
| 2095 | /* |
| 2096 | * Preallocate space for 64 users, with 5 sessions each. |
| 2097 | * (consider that a TLS protocol session requires at least |
| 2098 | * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for |
| 2099 | * the negotiation, plus HMAC_SHA1 for the actual SSL records, |
| 2100 | * consuming one session here for each algorithm. |
| 2101 | */ |
| 2102 | pool_prime(&fcrpl, 64); |
| 2103 | pool_prime(&csepl, 64 * 5); |
| 2104 | } |
| 2105 | |
| 2106 | void crypto_attach(device_t, device_t, void *); |
| 2107 | |
| 2108 | void |
| 2109 | crypto_attach(device_t parent, device_t self, void * opaque) |
| 2110 | { |
| 2111 | |
| 2112 | cryptoattach(0); |
| 2113 | } |
| 2114 | |
| 2115 | int crypto_detach(device_t, int); |
| 2116 | |
| 2117 | int |
| 2118 | crypto_detach(device_t self, int num) |
| 2119 | { |
| 2120 | |
| 2121 | pool_destroy(&fcrpl); |
| 2122 | pool_destroy(&csepl); |
| 2123 | |
| 2124 | return 0; |
| 2125 | } |
| 2126 | |
| 2127 | int crypto_match(device_t, cfdata_t, void *); |
| 2128 | |
| 2129 | int |
| 2130 | crypto_match(device_t parent, cfdata_t data, void *opaque) |
| 2131 | { |
| 2132 | |
| 2133 | return 1; |
| 2134 | } |
| 2135 | |
| 2136 | MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto" ); |
| 2137 | |
| 2138 | CFDRIVER_DECL(crypto, DV_DULL, NULL); |
| 2139 | |
| 2140 | CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, |
| 2141 | NULL, NULL, NULL); |
| 2142 | |
| 2143 | #ifdef _MODULE |
| 2144 | static int cryptoloc[] = { -1, -1 }; |
| 2145 | |
| 2146 | static struct cfdata crypto_cfdata[] = { |
| 2147 | { |
| 2148 | .cf_name = "crypto" , |
| 2149 | .cf_atname = "crypto" , |
| 2150 | .cf_unit = 0, |
| 2151 | .cf_fstate = 0, |
| 2152 | .cf_loc = cryptoloc, |
| 2153 | .cf_flags = 0, |
| 2154 | .cf_pspec = NULL, |
| 2155 | }, |
| 2156 | { NULL, NULL, 0, 0, NULL, 0, NULL } |
| 2157 | }; |
| 2158 | #endif |
| 2159 | |
| 2160 | static int |
| 2161 | crypto_modcmd(modcmd_t cmd, void *arg) |
| 2162 | { |
| 2163 | int error = 0; |
| 2164 | #ifdef _MODULE |
| 2165 | devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; |
| 2166 | #endif |
| 2167 | |
| 2168 | switch (cmd) { |
| 2169 | case MODULE_CMD_INIT: |
| 2170 | #ifdef _MODULE |
| 2171 | |
| 2172 | error = config_cfdriver_attach(&crypto_cd); |
| 2173 | if (error) { |
| 2174 | return error; |
| 2175 | } |
| 2176 | |
| 2177 | error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); |
| 2178 | if (error) { |
| 2179 | config_cfdriver_detach(&crypto_cd); |
| 2180 | aprint_error("%s: unable to register cfattach\n" , |
| 2181 | crypto_cd.cd_name); |
| 2182 | |
| 2183 | return error; |
| 2184 | } |
| 2185 | |
| 2186 | error = config_cfdata_attach(crypto_cfdata, 1); |
| 2187 | if (error) { |
| 2188 | config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); |
| 2189 | config_cfdriver_detach(&crypto_cd); |
| 2190 | aprint_error("%s: unable to register cfdata\n" , |
| 2191 | crypto_cd.cd_name); |
| 2192 | |
| 2193 | return error; |
| 2194 | } |
| 2195 | |
| 2196 | error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, |
| 2197 | &crypto_cdevsw, &cmajor); |
| 2198 | if (error) { |
| 2199 | error = config_cfdata_detach(crypto_cfdata); |
| 2200 | if (error) { |
| 2201 | return error; |
| 2202 | } |
| 2203 | config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); |
| 2204 | config_cfdriver_detach(&crypto_cd); |
| 2205 | aprint_error("%s: unable to register devsw\n" , |
| 2206 | crypto_cd.cd_name); |
| 2207 | |
| 2208 | return error; |
| 2209 | } |
| 2210 | |
| 2211 | (void)config_attach_pseudo(crypto_cfdata); |
| 2212 | #endif |
| 2213 | |
| 2214 | return error; |
| 2215 | case MODULE_CMD_FINI: |
| 2216 | #ifdef _MODULE |
| 2217 | error = config_cfdata_detach(crypto_cfdata); |
| 2218 | if (error) { |
| 2219 | return error; |
| 2220 | } |
| 2221 | |
| 2222 | config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); |
| 2223 | config_cfdriver_detach(&crypto_cd); |
| 2224 | devsw_detach(NULL, &crypto_cdevsw); |
| 2225 | #endif |
| 2226 | |
| 2227 | return error; |
| 2228 | #ifdef _MODULE |
| 2229 | case MODULE_CMD_AUTOUNLOAD: |
| 2230 | #if 0 /* |
| 2231 | * XXX Completely disable auto-unload for now, since there is still |
| 2232 | * XXX a (small) window where in-module ref-counting doesn't help |
| 2233 | */ |
| 2234 | if (crypto_refcount != 0) |
| 2235 | #endif |
| 2236 | return EBUSY; |
| 2237 | /* FALLTHROUGH */ |
| 2238 | #endif |
| 2239 | default: |
| 2240 | return ENOTTY; |
| 2241 | } |
| 2242 | } |
| 2243 | |