Blame view
crypto/algapi.c
20.1 KB
cce9e06d1 [CRYPTO] api: Spl... |
1 2 3 4 5 6 7 8 9 10 11 |
/* * Cryptographic API for algorithms (i.e., low-level API). * * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ |
6bfd48096 [CRYPTO] api: Add... |
12 |
#include <linux/err.h> |
cce9e06d1 [CRYPTO] api: Spl... |
13 14 15 |
#include <linux/errno.h> #include <linux/init.h> #include <linux/kernel.h> |
4cc7720cd [CRYPTO] api: Add... |
16 |
#include <linux/list.h> |
cce9e06d1 [CRYPTO] api: Spl... |
17 |
#include <linux/module.h> |
7fed0bf27 [CRYPTO] api: Add... |
18 |
#include <linux/rtnetlink.h> |
5a0e3ad6a include cleanup: ... |
19 |
#include <linux/slab.h> |
cce9e06d1 [CRYPTO] api: Spl... |
20 21 22 |
#include <linux/string.h> #include "internal.h" |
4cc7720cd [CRYPTO] api: Add... |
23 |
static LIST_HEAD(crypto_template_list); |
cce9e06d1 [CRYPTO] api: Spl... |
24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 |
static inline int crypto_set_driver_name(struct crypto_alg *alg) { static const char suffix[] = "-generic"; char *driver_name = alg->cra_driver_name; int len; if (*driver_name) return 0; len = strlcpy(driver_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); if (len + sizeof(suffix) > CRYPTO_MAX_ALG_NAME) return -ENAMETOOLONG; memcpy(driver_name + len, suffix, sizeof(suffix)); return 0; } |
002c77a48 crypto: fips - on... |
40 41 42 43 44 45 46 47 48 49 |
static inline void crypto_check_module_sig(struct module *mod) { #ifdef CONFIG_CRYPTO_FIPS if (fips_enabled && mod && !mod->sig_ok) panic("Module %s signature verification failed in FIPS mode ", mod->name); #endif return; } |
4cc7720cd [CRYPTO] api: Add... |
50 |
static int crypto_check_alg(struct crypto_alg *alg) |
cce9e06d1 [CRYPTO] api: Spl... |
51 |
{ |
002c77a48 crypto: fips - on... |
52 |
crypto_check_module_sig(alg->cra_module); |
cce9e06d1 [CRYPTO] api: Spl... |
53 54 |
if (alg->cra_alignmask & (alg->cra_alignmask + 1)) return -EINVAL; |
cce9e06d1 [CRYPTO] api: Spl... |
55 56 57 58 59 |
if (alg->cra_blocksize > PAGE_SIZE / 8) return -EINVAL; if (alg->cra_priority < 0) return -EINVAL; |
cce9e06d1 [CRYPTO] api: Spl... |
60 |
|
e9b8e5beb crypto: api - Mov... |
61 |
atomic_set(&alg->cra_refcnt, 1); |
4cc7720cd [CRYPTO] api: Add... |
62 63 |
return crypto_set_driver_name(alg); } |
6bfd48096 [CRYPTO] api: Add... |
64 65 66 67 68 69 70 71 |
static void crypto_destroy_instance(struct crypto_alg *alg) { struct crypto_instance *inst = (void *)alg; struct crypto_template *tmpl = inst->tmpl; tmpl->free(inst); crypto_tmpl_put(tmpl); } |
2bf290166 crypto: api - Do ... |
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 |
static struct list_head *crypto_more_spawns(struct crypto_alg *alg, struct list_head *stack, struct list_head *top, struct list_head *secondary_spawns) { struct crypto_spawn *spawn, *n; if (list_empty(stack)) return NULL; spawn = list_first_entry(stack, struct crypto_spawn, list); n = list_entry(spawn->list.next, struct crypto_spawn, list); if (spawn->alg && &n->list != stack && !n->alg) n->alg = (n->list.next == stack) ? alg : &list_entry(n->list.next, struct crypto_spawn, list)->inst->alg; list_move(&spawn->list, secondary_spawns); return &n->list == stack ? top : &n->inst->alg.cra_users; } |
1f7237109 crypto: api - Fix... |
94 95 |
static void crypto_remove_instance(struct crypto_instance *inst, struct list_head *list) |
6bfd48096 [CRYPTO] api: Add... |
96 |
{ |
a73e69965 [CRYPTO] api: Do ... |
97 |
struct crypto_template *tmpl = inst->tmpl; |
6bfd48096 [CRYPTO] api: Add... |
98 |
|
a73e69965 [CRYPTO] api: Do ... |
99 100 |
if (crypto_is_dead(&inst->alg)) return; |
6bfd48096 [CRYPTO] api: Add... |
101 |
|
a73e69965 [CRYPTO] api: Do ... |
102 |
inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419f [CRYPTO] api: Fix... |
103 104 |
if (hlist_unhashed(&inst->list)) return; |
a73e69965 [CRYPTO] api: Do ... |
105 106 107 108 109 110 111 |
if (!tmpl || !crypto_tmpl_get(tmpl)) return; crypto_notify(CRYPTO_MSG_ALG_UNREGISTER, &inst->alg); list_move(&inst->alg.cra_list, list); hlist_del(&inst->list); inst->alg.cra_destroy = crypto_destroy_instance; |
2bf290166 crypto: api - Do ... |
112 |
BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e69965 [CRYPTO] api: Do ... |
113 |
} |
89b596ba2 crypto: Export cr... |
114 115 |
void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, struct crypto_alg *nalg) |
a73e69965 [CRYPTO] api: Do ... |
116 |
{ |
2bf290166 crypto: api - Do ... |
117 |
u32 new_type = (nalg ?: alg)->cra_flags; |
a73e69965 [CRYPTO] api: Do ... |
118 119 |
struct crypto_spawn *spawn, *n; LIST_HEAD(secondary_spawns); |
2bf290166 crypto: api - Do ... |
120 121 122 |
struct list_head *spawns; LIST_HEAD(stack); LIST_HEAD(top); |
6bfd48096 [CRYPTO] api: Add... |
123 |
|
2bf290166 crypto: api - Do ... |
124 |
spawns = &alg->cra_users; |
a73e69965 [CRYPTO] api: Do ... |
125 126 |
list_for_each_entry_safe(spawn, n, spawns, list) { if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) |
6bfd48096 [CRYPTO] api: Add... |
127 |
continue; |
2bf290166 crypto: api - Do ... |
128 |
list_move(&spawn->list, &top); |
a73e69965 [CRYPTO] api: Do ... |
129 |
} |
6bfd48096 [CRYPTO] api: Add... |
130 |
|
2bf290166 crypto: api - Do ... |
131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 |
spawns = ⊤ do { while (!list_empty(spawns)) { struct crypto_instance *inst; spawn = list_first_entry(spawns, struct crypto_spawn, list); inst = spawn->inst; BUG_ON(&inst->alg == alg); list_move(&spawn->list, &stack); if (&inst->alg == nalg) break; spawn->alg = NULL; spawns = &inst->alg.cra_users; } } while ((spawns = crypto_more_spawns(alg, &stack, &top, &secondary_spawns))); list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { if (spawn->alg) list_move(&spawn->list, &spawn->alg->cra_users); else |
1f7237109 crypto: api - Fix... |
157 |
crypto_remove_instance(spawn->inst, list); |
6bfd48096 [CRYPTO] api: Add... |
158 159 |
} } |
89b596ba2 crypto: Export cr... |
160 |
EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd48096 [CRYPTO] api: Add... |
161 |
|
73d3864a4 crypto: api - Use... |
162 |
static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) |
4cc7720cd [CRYPTO] api: Add... |
163 164 |
{ struct crypto_alg *q; |
73d3864a4 crypto: api - Use... |
165 |
struct crypto_larval *larval; |
6bfd48096 [CRYPTO] api: Add... |
166 167 168 |
int ret = -EAGAIN; if (crypto_is_dead(alg)) |
73d3864a4 crypto: api - Use... |
169 |
goto err; |
6bfd48096 [CRYPTO] api: Add... |
170 171 |
INIT_LIST_HEAD(&alg->cra_users); |
73d3864a4 crypto: api - Use... |
172 173 |
/* No cheating! */ alg->cra_flags &= ~CRYPTO_ALG_TESTED; |
6bfd48096 [CRYPTO] api: Add... |
174 |
ret = -EEXIST; |
4cc7720cd [CRYPTO] api: Add... |
175 |
|
cce9e06d1 [CRYPTO] api: Spl... |
176 |
list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720cd [CRYPTO] api: Add... |
177 |
if (q == alg) |
73d3864a4 crypto: api - Use... |
178 |
goto err; |
b8e15992b crypto: api - Fix... |
179 180 |
if (crypto_is_moribund(q)) continue; |
73d3864a4 crypto: api - Use... |
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 |
if (crypto_is_larval(q)) { if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) goto err; continue; } if (!strcmp(q->cra_driver_name, alg->cra_name) || !strcmp(q->cra_name, alg->cra_driver_name)) goto err; } larval = crypto_larval_alloc(alg->cra_name, alg->cra_flags | CRYPTO_ALG_TESTED, 0); if (IS_ERR(larval)) goto out; ret = -ENOENT; larval->adult = crypto_mod_get(alg); if (!larval->adult) goto free_larval; atomic_set(&larval->alg.cra_refcnt, 1); memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, CRYPTO_MAX_ALG_NAME); larval->alg.cra_priority = alg->cra_priority; list_add(&alg->cra_list, &crypto_alg_list); list_add(&larval->alg.cra_list, &crypto_alg_list); |
5357c6c43 crypto: algapi - ... |
209 |
out: |
73d3864a4 crypto: api - Use... |
210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 |
return larval; free_larval: kfree(larval); err: larval = ERR_PTR(ret); goto out; } void crypto_alg_tested(const char *name, int err) { struct crypto_larval *test; struct crypto_alg *alg; struct crypto_alg *q; LIST_HEAD(list); down_write(&crypto_alg_sem); list_for_each_entry(q, &crypto_alg_list, cra_list) { |
b8e15992b crypto: api - Fix... |
228 |
if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a4 crypto: api - Use... |
229 230 231 232 233 234 235 236 237 238 239 240 241 |
continue; test = (struct crypto_larval *)q; if (!strcmp(q->cra_driver_name, name)) goto found; } printk(KERN_ERR "alg: Unexpected test result for %s: %d ", name, err); goto unlock; found: |
b8e15992b crypto: api - Fix... |
242 |
q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a4 crypto: api - Use... |
243 244 245 246 247 248 249 250 251 |
alg = test->adult; if (err || list_empty(&alg->cra_list)) goto complete; alg->cra_flags |= CRYPTO_ALG_TESTED; list_for_each_entry(q, &crypto_alg_list, cra_list) { if (q == alg) continue; |
6bfd48096 [CRYPTO] api: Add... |
252 253 254 255 256 |
if (crypto_is_moribund(q)) continue; if (crypto_is_larval(q)) { |
2825982d9 [CRYPTO] api: Add... |
257 |
struct crypto_larval *larval = (void *)q; |
d8058480b [CRYPTO] api: Exp... |
258 259 260 261 262 |
/* * Check to see if either our generic name or * specific name can satisfy the name requested * by the larval entry q. */ |
6bfd48096 [CRYPTO] api: Add... |
263 264 265 266 267 268 |
if (strcmp(alg->cra_name, q->cra_name) && strcmp(alg->cra_driver_name, q->cra_name)) continue; if (larval->adult) continue; |
492e2b63e [CRYPTO] api: All... |
269 270 |
if ((q->cra_flags ^ alg->cra_flags) & larval->mask) continue; |
2825982d9 [CRYPTO] api: Add... |
271 272 |
if (!crypto_mod_get(alg)) continue; |
6bfd48096 [CRYPTO] api: Add... |
273 |
|
2825982d9 [CRYPTO] api: Add... |
274 |
larval->adult = alg; |
6bfd48096 [CRYPTO] api: Add... |
275 |
continue; |
2825982d9 [CRYPTO] api: Add... |
276 |
} |
6bfd48096 [CRYPTO] api: Add... |
277 278 279 280 281 282 283 |
if (strcmp(alg->cra_name, q->cra_name)) continue; if (strcmp(alg->cra_driver_name, q->cra_driver_name) && q->cra_priority > alg->cra_priority) continue; |
2bf290166 crypto: api - Do ... |
284 |
crypto_remove_spawns(q, &list, alg); |
cce9e06d1 [CRYPTO] api: Spl... |
285 |
} |
2825982d9 [CRYPTO] api: Add... |
286 |
|
73d3864a4 crypto: api - Use... |
287 288 |
complete: complete_all(&test->completion); |
2825982d9 [CRYPTO] api: Add... |
289 |
|
73d3864a4 crypto: api - Use... |
290 291 292 293 |
unlock: up_write(&crypto_alg_sem); crypto_remove_final(&list); |
cce9e06d1 [CRYPTO] api: Spl... |
294 |
} |
73d3864a4 crypto: api - Use... |
295 |
EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720cd [CRYPTO] api: Add... |
296 |
|
22e5b20be crypto: Export cr... |
297 |
void crypto_remove_final(struct list_head *list) |
6bfd48096 [CRYPTO] api: Add... |
298 299 300 301 302 303 304 305 306 |
{ struct crypto_alg *alg; struct crypto_alg *n; list_for_each_entry_safe(alg, n, list, cra_list) { list_del_init(&alg->cra_list); crypto_alg_put(alg); } } |
22e5b20be crypto: Export cr... |
307 |
EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd48096 [CRYPTO] api: Add... |
308 |
|
73d3864a4 crypto: api - Use... |
309 310 311 312 313 314 315 316 317 318 |
static void crypto_wait_for_test(struct crypto_larval *larval) { int err; err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult); if (err != NOTIFY_STOP) { if (WARN_ON(err != NOTIFY_DONE)) goto out; crypto_alg_tested(larval->alg.cra_driver_name, 0); } |
4f277ccd2 crypto: api - Onl... |
319 |
err = wait_for_completion_killable(&larval->completion); |
73d3864a4 crypto: api - Use... |
320 321 322 323 324 |
WARN_ON(err); out: crypto_larval_kill(&larval->alg); } |
4cc7720cd [CRYPTO] api: Add... |
325 326 |
int crypto_register_alg(struct crypto_alg *alg) { |
73d3864a4 crypto: api - Use... |
327 |
struct crypto_larval *larval; |
4cc7720cd [CRYPTO] api: Add... |
328 329 330 331 332 333 334 |
int err; err = crypto_check_alg(alg); if (err) return err; down_write(&crypto_alg_sem); |
73d3864a4 crypto: api - Use... |
335 |
larval = __crypto_register_alg(alg); |
4cc7720cd [CRYPTO] api: Add... |
336 |
up_write(&crypto_alg_sem); |
73d3864a4 crypto: api - Use... |
337 338 339 340 341 |
if (IS_ERR(larval)) return PTR_ERR(larval); crypto_wait_for_test(larval); return 0; |
4cc7720cd [CRYPTO] api: Add... |
342 |
} |
cce9e06d1 [CRYPTO] api: Spl... |
343 |
EXPORT_SYMBOL_GPL(crypto_register_alg); |
6bfd48096 [CRYPTO] api: Add... |
344 345 346 347 348 349 350 351 352 |
static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) { if (unlikely(list_empty(&alg->cra_list))) return -ENOENT; alg->cra_flags |= CRYPTO_ALG_DEAD; crypto_notify(CRYPTO_MSG_ALG_UNREGISTER, alg); list_del_init(&alg->cra_list); |
2bf290166 crypto: api - Do ... |
353 |
crypto_remove_spawns(alg, list, NULL); |
6bfd48096 [CRYPTO] api: Add... |
354 355 356 |
return 0; } |
cce9e06d1 [CRYPTO] api: Spl... |
357 358 |
int crypto_unregister_alg(struct crypto_alg *alg) { |
6bfd48096 [CRYPTO] api: Add... |
359 360 |
int ret; LIST_HEAD(list); |
5357c6c43 crypto: algapi - ... |
361 |
|
cce9e06d1 [CRYPTO] api: Spl... |
362 |
down_write(&crypto_alg_sem); |
6bfd48096 [CRYPTO] api: Add... |
363 |
ret = crypto_remove_alg(alg, &list); |
cce9e06d1 [CRYPTO] api: Spl... |
364 365 366 367 368 369 370 371 |
up_write(&crypto_alg_sem); if (ret) return ret; BUG_ON(atomic_read(&alg->cra_refcnt) != 1); if (alg->cra_destroy) alg->cra_destroy(alg); |
6bfd48096 [CRYPTO] api: Add... |
372 |
crypto_remove_final(&list); |
cce9e06d1 [CRYPTO] api: Spl... |
373 374 375 |
return 0; } EXPORT_SYMBOL_GPL(crypto_unregister_alg); |
4b004346f crypto: Add bulk ... |
376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 |
int crypto_register_algs(struct crypto_alg *algs, int count) { int i, ret; for (i = 0; i < count; i++) { ret = crypto_register_alg(&algs[i]); if (ret) goto err; } return 0; err: for (--i; i >= 0; --i) crypto_unregister_alg(&algs[i]); return ret; } EXPORT_SYMBOL_GPL(crypto_register_algs); int crypto_unregister_algs(struct crypto_alg *algs, int count) { int i, ret; for (i = 0; i < count; i++) { ret = crypto_unregister_alg(&algs[i]); if (ret) pr_err("Failed to unregister %s %s: %d ", algs[i].cra_driver_name, algs[i].cra_name, ret); } return 0; } EXPORT_SYMBOL_GPL(crypto_unregister_algs); |
4cc7720cd [CRYPTO] api: Add... |
411 412 413 414 415 416 |
int crypto_register_template(struct crypto_template *tmpl) { struct crypto_template *q; int err = -EEXIST; down_write(&crypto_alg_sem); |
002c77a48 crypto: fips - on... |
417 |
crypto_check_module_sig(tmpl->module); |
4cc7720cd [CRYPTO] api: Add... |
418 419 420 421 422 423 |
list_for_each_entry(q, &crypto_template_list, list) { if (q == tmpl) goto out; } list_add(&tmpl->list, &crypto_template_list); |
2825982d9 [CRYPTO] api: Add... |
424 |
crypto_notify(CRYPTO_MSG_TMPL_REGISTER, tmpl); |
4cc7720cd [CRYPTO] api: Add... |
425 426 427 428 429 430 431 432 433 434 |
err = 0; out: up_write(&crypto_alg_sem); return err; } EXPORT_SYMBOL_GPL(crypto_register_template); void crypto_unregister_template(struct crypto_template *tmpl) { struct crypto_instance *inst; |
b67bfe0d4 hlist: drop the n... |
435 |
struct hlist_node *n; |
4cc7720cd [CRYPTO] api: Add... |
436 |
struct hlist_head *list; |
6bfd48096 [CRYPTO] api: Add... |
437 |
LIST_HEAD(users); |
4cc7720cd [CRYPTO] api: Add... |
438 439 440 441 442 443 444 |
down_write(&crypto_alg_sem); BUG_ON(list_empty(&tmpl->list)); list_del_init(&tmpl->list); list = &tmpl->instances; |
b67bfe0d4 hlist: drop the n... |
445 |
hlist_for_each_entry(inst, list, list) { |
6bfd48096 [CRYPTO] api: Add... |
446 |
int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5b crypto: api - fix... |
447 |
|
6bfd48096 [CRYPTO] api: Add... |
448 |
BUG_ON(err); |
4cc7720cd [CRYPTO] api: Add... |
449 |
} |
2825982d9 [CRYPTO] api: Add... |
450 |
crypto_notify(CRYPTO_MSG_TMPL_UNREGISTER, tmpl); |
4cc7720cd [CRYPTO] api: Add... |
451 |
up_write(&crypto_alg_sem); |
b67bfe0d4 hlist: drop the n... |
452 |
hlist_for_each_entry_safe(inst, n, list, list) { |
4cc7720cd [CRYPTO] api: Add... |
453 454 455 |
BUG_ON(atomic_read(&inst->alg.cra_refcnt) != 1); tmpl->free(inst); } |
6bfd48096 [CRYPTO] api: Add... |
456 |
crypto_remove_final(&users); |
4cc7720cd [CRYPTO] api: Add... |
457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 |
} EXPORT_SYMBOL_GPL(crypto_unregister_template); static struct crypto_template *__crypto_lookup_template(const char *name) { struct crypto_template *q, *tmpl = NULL; down_read(&crypto_alg_sem); list_for_each_entry(q, &crypto_template_list, list) { if (strcmp(q->name, name)) continue; if (unlikely(!crypto_tmpl_get(q))) continue; tmpl = q; break; } up_read(&crypto_alg_sem); return tmpl; } struct crypto_template *crypto_lookup_template(const char *name) { |
4943ba16b crypto: include c... |
481 482 |
return try_then_request_module(__crypto_lookup_template(name), "crypto-%s", name); |
4cc7720cd [CRYPTO] api: Add... |
483 484 485 486 487 488 |
} EXPORT_SYMBOL_GPL(crypto_lookup_template); int crypto_register_instance(struct crypto_template *tmpl, struct crypto_instance *inst) { |
73d3864a4 crypto: api - Use... |
489 490 |
struct crypto_larval *larval; int err; |
4cc7720cd [CRYPTO] api: Add... |
491 |
|
4cc7720cd [CRYPTO] api: Add... |
492 493 |
err = crypto_check_alg(&inst->alg); if (err) |
9c521a200 crypto: api - rem... |
494 |
return err; |
4cc7720cd [CRYPTO] api: Add... |
495 |
inst->alg.cra_module = tmpl->module; |
64a947b13 crypto: Add a fla... |
496 |
inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720cd [CRYPTO] api: Add... |
497 |
|
34c9a0ffc crypto: fix broke... |
498 499 |
if (unlikely(!crypto_mod_get(&inst->alg))) return -EAGAIN; |
4cc7720cd [CRYPTO] api: Add... |
500 |
down_write(&crypto_alg_sem); |
73d3864a4 crypto: api - Use... |
501 502 |
larval = __crypto_register_alg(&inst->alg); if (IS_ERR(larval)) |
4cc7720cd [CRYPTO] api: Add... |
503 504 505 506 507 508 509 |
goto unlock; hlist_add_head(&inst->list, &tmpl->instances); inst->tmpl = tmpl; unlock: up_write(&crypto_alg_sem); |
73d3864a4 crypto: api - Use... |
510 511 512 513 514 |
err = PTR_ERR(larval); if (IS_ERR(larval)) goto err; crypto_wait_for_test(larval); |
9c521a200 crypto: api - rem... |
515 516 517 518 |
/* Remove instance if test failed */ if (!(inst->alg.cra_flags & CRYPTO_ALG_TESTED)) crypto_unregister_instance(inst); |
73d3864a4 crypto: api - Use... |
519 |
err = 0; |
6bfd48096 [CRYPTO] api: Add... |
520 |
|
4cc7720cd [CRYPTO] api: Add... |
521 |
err: |
9c521a200 crypto: api - rem... |
522 |
crypto_mod_put(&inst->alg); |
4cc7720cd [CRYPTO] api: Add... |
523 524 525 |
return err; } EXPORT_SYMBOL_GPL(crypto_register_instance); |
ce3fd840f crypto: Unlink an... |
526 |
|
87b167563 crypto: api - Cha... |
527 |
int crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840f crypto: Unlink an... |
528 |
{ |
1f7237109 crypto: api - Fix... |
529 |
LIST_HEAD(list); |
ce3fd840f crypto: Unlink an... |
530 |
|
ce3fd840f crypto: Unlink an... |
531 |
down_write(&crypto_alg_sem); |
87b167563 crypto: api - Cha... |
532 |
crypto_remove_spawns(&inst->alg, &list, NULL); |
1f7237109 crypto: api - Fix... |
533 |
crypto_remove_instance(inst, &list); |
ce3fd840f crypto: Unlink an... |
534 535 |
up_write(&crypto_alg_sem); |
1f7237109 crypto: api - Fix... |
536 |
crypto_remove_final(&list); |
ce3fd840f crypto: Unlink an... |
537 538 539 540 |
return 0; } EXPORT_SYMBOL_GPL(crypto_unregister_instance); |
4cc7720cd [CRYPTO] api: Add... |
541 |
|
6bfd48096 [CRYPTO] api: Add... |
542 |
int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, |
a73e69965 [CRYPTO] api: Do ... |
543 |
struct crypto_instance *inst, u32 mask) |
6bfd48096 [CRYPTO] api: Add... |
544 545 546 547 |
{ int err = -EAGAIN; spawn->inst = inst; |
a73e69965 [CRYPTO] api: Do ... |
548 |
spawn->mask = mask; |
6bfd48096 [CRYPTO] api: Add... |
549 550 551 552 553 554 555 556 557 558 559 560 |
down_write(&crypto_alg_sem); if (!crypto_is_moribund(alg)) { list_add(&spawn->list, &alg->cra_users); spawn->alg = alg; err = 0; } up_write(&crypto_alg_sem); return err; } EXPORT_SYMBOL_GPL(crypto_init_spawn); |
97eedce1a crypto: api - Add... |
561 562 563 564 565 |
int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg, struct crypto_instance *inst, const struct crypto_type *frontend) { int err = -EINVAL; |
c614e109c crypto: algapi - ... |
566 |
if ((alg->cra_flags ^ frontend->type) & frontend->maskset) |
97eedce1a crypto: api - Add... |
567 568 569 570 571 572 573 574 575 |
goto out; spawn->frontend = frontend; err = crypto_init_spawn(spawn, alg, inst, frontend->maskset); out: return err; } EXPORT_SYMBOL_GPL(crypto_init_spawn2); |
6bfd48096 [CRYPTO] api: Add... |
576 577 |
void crypto_drop_spawn(struct crypto_spawn *spawn) { |
7ede5a5ba crypto: api - Fix... |
578 579 |
if (!spawn->alg) return; |
6bfd48096 [CRYPTO] api: Add... |
580 581 582 583 584 |
down_write(&crypto_alg_sem); list_del(&spawn->list); up_write(&crypto_alg_sem); } EXPORT_SYMBOL_GPL(crypto_drop_spawn); |
97eedce1a crypto: api - Add... |
585 |
static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd48096 [CRYPTO] api: Add... |
586 587 588 |
{ struct crypto_alg *alg; struct crypto_alg *alg2; |
6bfd48096 [CRYPTO] api: Add... |
589 590 591 592 593 594 595 596 597 598 599 600 601 |
down_read(&crypto_alg_sem); alg = spawn->alg; alg2 = alg; if (alg2) alg2 = crypto_mod_get(alg2); up_read(&crypto_alg_sem); if (!alg2) { if (alg) crypto_shoot_alg(alg); return ERR_PTR(-EAGAIN); } |
97eedce1a crypto: api - Add... |
602 603 604 605 606 607 608 609 610 611 612 613 |
return alg; } struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, u32 mask) { struct crypto_alg *alg; struct crypto_tfm *tfm; alg = crypto_spawn_alg(spawn); if (IS_ERR(alg)) return ERR_CAST(alg); |
2e306ee01 [CRYPTO] api: Add... |
614 615 616 |
tfm = ERR_PTR(-EINVAL); if (unlikely((alg->cra_flags ^ type) & mask)) goto out_put_alg; |
27d2a3300 [CRYPTO] api: All... |
617 |
tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd48096 [CRYPTO] api: Add... |
618 |
if (IS_ERR(tfm)) |
2e306ee01 [CRYPTO] api: Add... |
619 620 621 |
goto out_put_alg; return tfm; |
6bfd48096 [CRYPTO] api: Add... |
622 |
|
2e306ee01 [CRYPTO] api: Add... |
623 624 |
out_put_alg: crypto_mod_put(alg); |
6bfd48096 [CRYPTO] api: Add... |
625 626 627 |
return tfm; } EXPORT_SYMBOL_GPL(crypto_spawn_tfm); |
97eedce1a crypto: api - Add... |
628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 |
void *crypto_spawn_tfm2(struct crypto_spawn *spawn) { struct crypto_alg *alg; struct crypto_tfm *tfm; alg = crypto_spawn_alg(spawn); if (IS_ERR(alg)) return ERR_CAST(alg); tfm = crypto_create_tfm(alg, spawn->frontend); if (IS_ERR(tfm)) goto out_put_alg; return tfm; out_put_alg: crypto_mod_put(alg); return tfm; } EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); |
2825982d9 [CRYPTO] api: Add... |
648 649 650 651 652 653 654 655 656 657 658 |
int crypto_register_notifier(struct notifier_block *nb) { return blocking_notifier_chain_register(&crypto_chain, nb); } EXPORT_SYMBOL_GPL(crypto_register_notifier); int crypto_unregister_notifier(struct notifier_block *nb) { return blocking_notifier_chain_unregister(&crypto_chain, nb); } EXPORT_SYMBOL_GPL(crypto_unregister_notifier); |
ebc610e5b [CRYPTO] template... |
659 |
struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf27 [CRYPTO] api: Add... |
660 |
{ |
39e1ee011 [CRYPTO] api: Add... |
661 |
struct rtattr *rta = tb[0]; |
ebc610e5b [CRYPTO] template... |
662 663 664 665 666 667 |
struct crypto_attr_type *algt; if (!rta) return ERR_PTR(-ENOENT); if (RTA_PAYLOAD(rta) < sizeof(*algt)) return ERR_PTR(-EINVAL); |
39e1ee011 [CRYPTO] api: Add... |
668 669 |
if (rta->rta_type != CRYPTOA_TYPE) return ERR_PTR(-EINVAL); |
ebc610e5b [CRYPTO] template... |
670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 |
algt = RTA_DATA(rta); return algt; } EXPORT_SYMBOL_GPL(crypto_get_attr_type); int crypto_check_attr_type(struct rtattr **tb, u32 type) { struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) return PTR_ERR(algt); if ((algt->type ^ type) & algt->mask) return -EINVAL; return 0; } EXPORT_SYMBOL_GPL(crypto_check_attr_type); |
68b6c7d69 [CRYPTO] api: Add... |
691 |
const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5b [CRYPTO] template... |
692 |
{ |
7fed0bf27 [CRYPTO] api: Add... |
693 |
struct crypto_attr_alg *alga; |
ebc610e5b [CRYPTO] template... |
694 695 696 |
if (!rta) return ERR_PTR(-ENOENT); if (RTA_PAYLOAD(rta) < sizeof(*alga)) |
7fed0bf27 [CRYPTO] api: Add... |
697 |
return ERR_PTR(-EINVAL); |
39e1ee011 [CRYPTO] api: Add... |
698 699 |
if (rta->rta_type != CRYPTOA_ALG) return ERR_PTR(-EINVAL); |
7fed0bf27 [CRYPTO] api: Add... |
700 701 702 |
alga = RTA_DATA(rta); alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; |
68b6c7d69 [CRYPTO] api: Add... |
703 704 705 |
return alga->name; } EXPORT_SYMBOL_GPL(crypto_attr_alg_name); |
d06854f02 crypto: api - Add... |
706 707 708 |
struct crypto_alg *crypto_attr_alg2(struct rtattr *rta, const struct crypto_type *frontend, u32 type, u32 mask) |
68b6c7d69 [CRYPTO] api: Add... |
709 710 |
{ const char *name; |
68b6c7d69 [CRYPTO] api: Add... |
711 712 |
name = crypto_attr_alg_name(rta); |
68b6c7d69 [CRYPTO] api: Add... |
713 |
if (IS_ERR(name)) |
3e8afe35c crypto: use ERR_CAST |
714 |
return ERR_CAST(name); |
68b6c7d69 [CRYPTO] api: Add... |
715 |
|
d06854f02 crypto: api - Add... |
716 |
return crypto_find_alg(name, frontend, type, mask); |
7fed0bf27 [CRYPTO] api: Add... |
717 |
} |
d06854f02 crypto: api - Add... |
718 |
EXPORT_SYMBOL_GPL(crypto_attr_alg2); |
3c09f17c3 [CRYPTO] aead: Ad... |
719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 |
int crypto_attr_u32(struct rtattr *rta, u32 *num) { struct crypto_attr_u32 *nu32; if (!rta) return -ENOENT; if (RTA_PAYLOAD(rta) < sizeof(*nu32)) return -EINVAL; if (rta->rta_type != CRYPTOA_U32) return -EINVAL; nu32 = RTA_DATA(rta); *num = nu32->num; return 0; } EXPORT_SYMBOL_GPL(crypto_attr_u32); |
7fed0bf27 [CRYPTO] api: Add... |
737 |
|
70ec7bb91 crypto: api - Add... |
738 739 |
void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg, unsigned int head) |
7fed0bf27 [CRYPTO] api: Add... |
740 741 |
{ struct crypto_instance *inst; |
70ec7bb91 crypto: api - Add... |
742 |
char *p; |
7fed0bf27 [CRYPTO] api: Add... |
743 |
int err; |
70ec7bb91 crypto: api - Add... |
744 745 746 |
p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn), GFP_KERNEL); if (!p) |
7fed0bf27 [CRYPTO] api: Add... |
747 |
return ERR_PTR(-ENOMEM); |
70ec7bb91 crypto: api - Add... |
748 |
inst = (void *)(p + head); |
7fed0bf27 [CRYPTO] api: Add... |
749 750 751 752 753 754 755 756 |
err = -ENAMETOOLONG; if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, alg->cra_name) >= CRYPTO_MAX_ALG_NAME) goto err_free_inst; if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto err_free_inst; |
70ec7bb91 crypto: api - Add... |
757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 |
return p; err_free_inst: kfree(p); return ERR_PTR(err); } EXPORT_SYMBOL_GPL(crypto_alloc_instance2); struct crypto_instance *crypto_alloc_instance(const char *name, struct crypto_alg *alg) { struct crypto_instance *inst; struct crypto_spawn *spawn; int err; inst = crypto_alloc_instance2(name, alg, 0); if (IS_ERR(inst)) goto out; |
7fed0bf27 [CRYPTO] api: Add... |
775 |
spawn = crypto_instance_ctx(inst); |
a73e69965 [CRYPTO] api: Do ... |
776 777 |
err = crypto_init_spawn(spawn, alg, inst, CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); |
7fed0bf27 [CRYPTO] api: Add... |
778 779 780 781 782 783 784 785 |
if (err) goto err_free_inst; return inst; err_free_inst: kfree(inst); |
70ec7bb91 crypto: api - Add... |
786 787 788 789 |
inst = ERR_PTR(err); out: return inst; |
7fed0bf27 [CRYPTO] api: Add... |
790 791 |
} EXPORT_SYMBOL_GPL(crypto_alloc_instance); |
b5b7f0886 [CRYPTO] api: Add... |
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 |
void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) { INIT_LIST_HEAD(&queue->list); queue->backlog = &queue->list; queue->qlen = 0; queue->max_qlen = max_qlen; } EXPORT_SYMBOL_GPL(crypto_init_queue); int crypto_enqueue_request(struct crypto_queue *queue, struct crypto_async_request *request) { int err = -EINPROGRESS; if (unlikely(queue->qlen >= queue->max_qlen)) { err = -EBUSY; if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) goto out; if (queue->backlog == &queue->list) queue->backlog = &request->list; } queue->qlen++; list_add_tail(&request->list, &queue->list); out: return err; } EXPORT_SYMBOL_GPL(crypto_enqueue_request); |
0c7d400fa crypto: skcipher ... |
821 |
void *__crypto_dequeue_request(struct crypto_queue *queue, unsigned int offset) |
b5b7f0886 [CRYPTO] api: Add... |
822 823 824 825 826 827 828 829 830 831 832 833 834 |
{ struct list_head *request; if (unlikely(!queue->qlen)) return NULL; queue->qlen--; if (queue->backlog != &queue->list) queue->backlog = queue->backlog->next; request = queue->list.next; list_del(request); |
0c7d400fa crypto: skcipher ... |
835 836 837 838 839 840 841 842 |
return (char *)list_entry(request, struct crypto_async_request, list) - offset; } EXPORT_SYMBOL_GPL(__crypto_dequeue_request); struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) { return __crypto_dequeue_request(queue, 0); |
b5b7f0886 [CRYPTO] api: Add... |
843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 |
} EXPORT_SYMBOL_GPL(crypto_dequeue_request); int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm) { struct crypto_async_request *req; list_for_each_entry(req, &queue->list, list) { if (req->tfm == tfm) return 1; } return 0; } EXPORT_SYMBOL_GPL(crypto_tfm_in_queue); |
7613636de [CRYPTO] api: Add... |
858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 |
static inline void crypto_inc_byte(u8 *a, unsigned int size) { u8 *b = (a + size); u8 c; for (; size; size--) { c = *--b + 1; *b = c; if (c) break; } } void crypto_inc(u8 *a, unsigned int size) { __be32 *b = (__be32 *)(a + size); u32 c; for (; size >= 4; size -= 4) { c = be32_to_cpu(*--b) + 1; *b = cpu_to_be32(c); if (c) return; } crypto_inc_byte(a, size); } EXPORT_SYMBOL_GPL(crypto_inc); static inline void crypto_xor_byte(u8 *a, const u8 *b, unsigned int size) { for (; size; size--) *a++ ^= *b++; } void crypto_xor(u8 *dst, const u8 *src, unsigned int size) { u32 *a = (u32 *)dst; u32 *b = (u32 *)src; for (; size >= 4; size -= 4) *a++ ^= *b++; crypto_xor_byte((u8 *)a, (u8 *)b, size); } EXPORT_SYMBOL_GPL(crypto_xor); |
cce9e06d1 [CRYPTO] api: Spl... |
904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 |
static int __init crypto_algapi_init(void) { crypto_init_proc(); return 0; } static void __exit crypto_algapi_exit(void) { crypto_exit_proc(); } module_init(crypto_algapi_init); module_exit(crypto_algapi_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Cryptographic algorithms API"); |