Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
cce9e06d HX |
2 | /* |
3 | * Cryptographic API for algorithms (i.e., low-level API). | |
4 | * | |
5 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> | |
cce9e06d HX |
6 | */ |
7 | ||
13c935bb | 8 | #include <crypto/algapi.h> |
8fc5f2ad | 9 | #include <crypto/internal/simd.h> |
6bfd4809 | 10 | #include <linux/err.h> |
cce9e06d | 11 | #include <linux/errno.h> |
3133d76f | 12 | #include <linux/fips.h> |
cce9e06d HX |
13 | #include <linux/init.h> |
14 | #include <linux/kernel.h> | |
4cc7720c | 15 | #include <linux/list.h> |
cce9e06d | 16 | #include <linux/module.h> |
7fed0bf2 | 17 | #include <linux/rtnetlink.h> |
5a0e3ad6 | 18 | #include <linux/slab.h> |
cce9e06d | 19 | #include <linux/string.h> |
9ae4577b | 20 | #include <linux/workqueue.h> |
cce9e06d HX |
21 | |
22 | #include "internal.h" | |
23 | ||
4cc7720c HX |
24 | static LIST_HEAD(crypto_template_list); |
25 | ||
8fc5f2ad HX |
26 | #ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS |
27 | DEFINE_PER_CPU(bool, crypto_simd_disabled_for_test); | |
28 | EXPORT_PER_CPU_SYMBOL_GPL(crypto_simd_disabled_for_test); | |
29 | #endif | |
30 | ||
002c77a4 JW |
31 | static inline void crypto_check_module_sig(struct module *mod) |
32 | { | |
59afdc7b | 33 | if (fips_enabled && mod && !module_sig_ok(mod)) |
002c77a4 | 34 | panic("Module %s signature verification failed in FIPS mode\n", |
bd4a7c69 | 35 | module_name(mod)); |
002c77a4 JW |
36 | } |
37 | ||
4cc7720c | 38 | static int crypto_check_alg(struct crypto_alg *alg) |
cce9e06d | 39 | { |
002c77a4 JW |
40 | crypto_check_module_sig(alg->cra_module); |
41 | ||
177f87d0 EB |
42 | if (!alg->cra_name[0] || !alg->cra_driver_name[0]) |
43 | return -EINVAL; | |
44 | ||
cce9e06d HX |
45 | if (alg->cra_alignmask & (alg->cra_alignmask + 1)) |
46 | return -EINVAL; | |
47 | ||
a9f7f88a KC |
48 | /* General maximums for all algs. */ |
49 | if (alg->cra_alignmask > MAX_ALGAPI_ALIGNMASK) | |
cce9e06d HX |
50 | return -EINVAL; |
51 | ||
a9f7f88a KC |
52 | if (alg->cra_blocksize > MAX_ALGAPI_BLOCKSIZE) |
53 | return -EINVAL; | |
54 | ||
55 | /* Lower maximums for specific alg types. */ | |
13c935bb SM |
56 | if (!alg->cra_type && (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == |
57 | CRYPTO_ALG_TYPE_CIPHER) { | |
58 | if (alg->cra_alignmask > MAX_CIPHER_ALIGNMASK) | |
59 | return -EINVAL; | |
60 | ||
61 | if (alg->cra_blocksize > MAX_CIPHER_BLOCKSIZE) | |
62 | return -EINVAL; | |
63 | } | |
64 | ||
cce9e06d HX |
65 | if (alg->cra_priority < 0) |
66 | return -EINVAL; | |
cce9e06d | 67 | |
ce8614a3 | 68 | refcount_set(&alg->cra_refcnt, 1); |
e9b8e5be | 69 | |
177f87d0 | 70 | return 0; |
4cc7720c HX |
71 | } |
72 | ||
319382a6 HX |
73 | static void crypto_free_instance(struct crypto_instance *inst) |
74 | { | |
319382a6 HX |
75 | inst->alg.cra_type->free(inst); |
76 | } | |
77 | ||
9ae4577b | 78 | static void crypto_destroy_instance_workfn(struct work_struct *w) |
6bfd4809 | 79 | { |
9ae4577b HX |
80 | struct crypto_instance *inst = container_of(w, struct crypto_instance, |
81 | free_work); | |
6bfd4809 HX |
82 | struct crypto_template *tmpl = inst->tmpl; |
83 | ||
319382a6 | 84 | crypto_free_instance(inst); |
6bfd4809 HX |
85 | crypto_tmpl_put(tmpl); |
86 | } | |
87 | ||
9ae4577b HX |
88 | static void crypto_destroy_instance(struct crypto_alg *alg) |
89 | { | |
90 | struct crypto_instance *inst = container_of(alg, | |
91 | struct crypto_instance, | |
92 | alg); | |
93 | ||
94 | INIT_WORK(&inst->free_work, crypto_destroy_instance_workfn); | |
95 | schedule_work(&inst->free_work); | |
96 | } | |
97 | ||
02244ba4 HX |
98 | /* |
99 | * This function adds a spawn to the list secondary_spawns which | |
100 | * will be used at the end of crypto_remove_spawns to unregister | |
101 | * instances, unless the spawn happens to be one that is depended | |
102 | * on by the new algorithm (nalg in crypto_remove_spawns). | |
103 | * | |
104 | * This function is also responsible for resurrecting any algorithms | |
105 | * in the dependency chain of nalg by unsetting n->dead. | |
106 | */ | |
2bf29016 HX |
107 | static struct list_head *crypto_more_spawns(struct crypto_alg *alg, |
108 | struct list_head *stack, | |
109 | struct list_head *top, | |
110 | struct list_head *secondary_spawns) | |
111 | { | |
112 | struct crypto_spawn *spawn, *n; | |
113 | ||
304e4818 GT |
114 | spawn = list_first_entry_or_null(stack, struct crypto_spawn, list); |
115 | if (!spawn) | |
2bf29016 HX |
116 | return NULL; |
117 | ||
4f87ee11 HX |
118 | n = list_prev_entry(spawn, list); |
119 | list_move(&spawn->list, secondary_spawns); | |
2bf29016 | 120 | |
4f87ee11 HX |
121 | if (list_is_last(&n->list, stack)) |
122 | return top; | |
2bf29016 | 123 | |
4f87ee11 HX |
124 | n = list_next_entry(n, list); |
125 | if (!spawn->dead) | |
126 | n->dead = false; | |
2bf29016 | 127 | |
4f87ee11 | 128 | return &n->inst->alg.cra_users; |
2bf29016 HX |
129 | } |
130 | ||
1f723710 HX |
131 | static void crypto_remove_instance(struct crypto_instance *inst, |
132 | struct list_head *list) | |
6bfd4809 | 133 | { |
a73e6996 | 134 | struct crypto_template *tmpl = inst->tmpl; |
6bfd4809 | 135 | |
a73e6996 HX |
136 | if (crypto_is_dead(&inst->alg)) |
137 | return; | |
6bfd4809 | 138 | |
a73e6996 | 139 | inst->alg.cra_flags |= CRYPTO_ALG_DEAD; |
38cb2419 | 140 | |
a73e6996 HX |
141 | if (!tmpl || !crypto_tmpl_get(tmpl)) |
142 | return; | |
143 | ||
a73e6996 HX |
144 | list_move(&inst->alg.cra_list, list); |
145 | hlist_del(&inst->list); | |
146 | inst->alg.cra_destroy = crypto_destroy_instance; | |
147 | ||
2bf29016 | 148 | BUG_ON(!list_empty(&inst->alg.cra_users)); |
a73e6996 HX |
149 | } |
150 | ||
02244ba4 HX |
151 | /* |
152 | * Given an algorithm alg, remove all algorithms that depend on it | |
153 | * through spawns. If nalg is not null, then exempt any algorithms | |
154 | * that is depended on by nalg. This is useful when nalg itself | |
155 | * depends on alg. | |
156 | */ | |
89b596ba SK |
157 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
158 | struct crypto_alg *nalg) | |
a73e6996 | 159 | { |
2bf29016 | 160 | u32 new_type = (nalg ?: alg)->cra_flags; |
a73e6996 HX |
161 | struct crypto_spawn *spawn, *n; |
162 | LIST_HEAD(secondary_spawns); | |
2bf29016 HX |
163 | struct list_head *spawns; |
164 | LIST_HEAD(stack); | |
165 | LIST_HEAD(top); | |
6bfd4809 | 166 | |
2bf29016 | 167 | spawns = &alg->cra_users; |
a73e6996 HX |
168 | list_for_each_entry_safe(spawn, n, spawns, list) { |
169 | if ((spawn->alg->cra_flags ^ new_type) & spawn->mask) | |
6bfd4809 HX |
170 | continue; |
171 | ||
2bf29016 | 172 | list_move(&spawn->list, &top); |
a73e6996 | 173 | } |
6bfd4809 | 174 | |
02244ba4 HX |
175 | /* |
176 | * Perform a depth-first walk starting from alg through | |
177 | * the cra_users tree. The list stack records the path | |
178 | * from alg to the current spawn. | |
179 | */ | |
2bf29016 HX |
180 | spawns = ⊤ |
181 | do { | |
182 | while (!list_empty(spawns)) { | |
183 | struct crypto_instance *inst; | |
184 | ||
185 | spawn = list_first_entry(spawns, struct crypto_spawn, | |
186 | list); | |
187 | inst = spawn->inst; | |
188 | ||
2bf29016 | 189 | list_move(&spawn->list, &stack); |
5f567fff HX |
190 | spawn->dead = !spawn->registered || &inst->alg != nalg; |
191 | ||
192 | if (!spawn->registered) | |
193 | break; | |
194 | ||
195 | BUG_ON(&inst->alg == alg); | |
2bf29016 HX |
196 | |
197 | if (&inst->alg == nalg) | |
198 | break; | |
199 | ||
2bf29016 | 200 | spawns = &inst->alg.cra_users; |
9a006742 EB |
201 | |
202 | /* | |
5f567fff HX |
203 | * Even if spawn->registered is true, the |
204 | * instance itself may still be unregistered. | |
205 | * This is because it may have failed during | |
206 | * registration. Therefore we still need to | |
207 | * make the following test. | |
208 | * | |
9a006742 EB |
209 | * We may encounter an unregistered instance here, since |
210 | * an instance's spawns are set up prior to the instance | |
211 | * being registered. An unregistered instance will have | |
212 | * NULL ->cra_users.next, since ->cra_users isn't | |
213 | * properly initialized until registration. But an | |
214 | * unregistered instance cannot have any users, so treat | |
215 | * it the same as ->cra_users being empty. | |
216 | */ | |
217 | if (spawns->next == NULL) | |
218 | break; | |
2bf29016 HX |
219 | } |
220 | } while ((spawns = crypto_more_spawns(alg, &stack, &top, | |
221 | &secondary_spawns))); | |
222 | ||
02244ba4 HX |
223 | /* |
224 | * Remove all instances that are marked as dead. Also | |
225 | * complete the resurrection of the others by moving them | |
226 | * back to the cra_users list. | |
227 | */ | |
2bf29016 | 228 | list_for_each_entry_safe(spawn, n, &secondary_spawns, list) { |
4f87ee11 | 229 | if (!spawn->dead) |
2bf29016 | 230 | list_move(&spawn->list, &spawn->alg->cra_users); |
5f567fff | 231 | else if (spawn->registered) |
1f723710 | 232 | crypto_remove_instance(spawn->inst, list); |
6bfd4809 HX |
233 | } |
234 | } | |
89b596ba | 235 | EXPORT_SYMBOL_GPL(crypto_remove_spawns); |
6bfd4809 | 236 | |
a7008584 EB |
237 | static void crypto_alg_finish_registration(struct crypto_alg *alg, |
238 | bool fulfill_requests, | |
239 | struct list_head *algs_to_put) | |
240 | { | |
241 | struct crypto_alg *q; | |
242 | ||
243 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
244 | if (q == alg) | |
245 | continue; | |
246 | ||
247 | if (crypto_is_moribund(q)) | |
248 | continue; | |
249 | ||
250 | if (crypto_is_larval(q)) { | |
251 | struct crypto_larval *larval = (void *)q; | |
252 | ||
253 | /* | |
254 | * Check to see if either our generic name or | |
255 | * specific name can satisfy the name requested | |
256 | * by the larval entry q. | |
257 | */ | |
258 | if (strcmp(alg->cra_name, q->cra_name) && | |
259 | strcmp(alg->cra_driver_name, q->cra_name)) | |
260 | continue; | |
261 | ||
262 | if (larval->adult) | |
263 | continue; | |
264 | if ((q->cra_flags ^ alg->cra_flags) & larval->mask) | |
265 | continue; | |
266 | ||
267 | if (fulfill_requests && crypto_mod_get(alg)) | |
268 | larval->adult = alg; | |
269 | else | |
270 | larval->adult = ERR_PTR(-EAGAIN); | |
271 | ||
272 | continue; | |
273 | } | |
274 | ||
275 | if (strcmp(alg->cra_name, q->cra_name)) | |
276 | continue; | |
277 | ||
278 | if (strcmp(alg->cra_driver_name, q->cra_driver_name) && | |
279 | q->cra_priority > alg->cra_priority) | |
280 | continue; | |
281 | ||
282 | crypto_remove_spawns(q, algs_to_put, alg); | |
283 | } | |
284 | ||
285 | crypto_notify(CRYPTO_MSG_ALG_LOADED, alg); | |
286 | } | |
287 | ||
cad439fc HX |
288 | static struct crypto_larval *crypto_alloc_test_larval(struct crypto_alg *alg) |
289 | { | |
290 | struct crypto_larval *larval; | |
291 | ||
a7008584 | 292 | if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER) || |
9cadd73a EB |
293 | IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) || |
294 | (alg->cra_flags & CRYPTO_ALG_INTERNAL)) | |
a7008584 | 295 | return NULL; /* No self-test needed */ |
cad439fc HX |
296 | |
297 | larval = crypto_larval_alloc(alg->cra_name, | |
298 | alg->cra_flags | CRYPTO_ALG_TESTED, 0); | |
299 | if (IS_ERR(larval)) | |
300 | return larval; | |
301 | ||
302 | larval->adult = crypto_mod_get(alg); | |
303 | if (!larval->adult) { | |
304 | kfree(larval); | |
305 | return ERR_PTR(-ENOENT); | |
306 | } | |
307 | ||
308 | refcount_set(&larval->alg.cra_refcnt, 1); | |
309 | memcpy(larval->alg.cra_driver_name, alg->cra_driver_name, | |
310 | CRYPTO_MAX_ALG_NAME); | |
311 | larval->alg.cra_priority = alg->cra_priority; | |
312 | ||
313 | return larval; | |
314 | } | |
315 | ||
a7008584 EB |
316 | static struct crypto_larval * |
317 | __crypto_register_alg(struct crypto_alg *alg, struct list_head *algs_to_put) | |
4cc7720c HX |
318 | { |
319 | struct crypto_alg *q; | |
73d3864a | 320 | struct crypto_larval *larval; |
6bfd4809 HX |
321 | int ret = -EAGAIN; |
322 | ||
323 | if (crypto_is_dead(alg)) | |
73d3864a | 324 | goto err; |
6bfd4809 HX |
325 | |
326 | INIT_LIST_HEAD(&alg->cra_users); | |
327 | ||
328 | ret = -EEXIST; | |
4cc7720c | 329 | |
cce9e06d | 330 | list_for_each_entry(q, &crypto_alg_list, cra_list) { |
4cc7720c | 331 | if (q == alg) |
73d3864a HX |
332 | goto err; |
333 | ||
b8e15992 HX |
334 | if (crypto_is_moribund(q)) |
335 | continue; | |
336 | ||
73d3864a HX |
337 | if (crypto_is_larval(q)) { |
338 | if (!strcmp(alg->cra_driver_name, q->cra_driver_name)) | |
339 | goto err; | |
340 | continue; | |
341 | } | |
342 | ||
343 | if (!strcmp(q->cra_driver_name, alg->cra_name) || | |
27016f75 | 344 | !strcmp(q->cra_driver_name, alg->cra_driver_name) || |
73d3864a HX |
345 | !strcmp(q->cra_name, alg->cra_driver_name)) |
346 | goto err; | |
347 | } | |
348 | ||
cad439fc | 349 | larval = crypto_alloc_test_larval(alg); |
73d3864a HX |
350 | if (IS_ERR(larval)) |
351 | goto out; | |
352 | ||
73d3864a | 353 | list_add(&alg->cra_list, &crypto_alg_list); |
cad439fc | 354 | |
a7008584 EB |
355 | if (larval) { |
356 | /* No cheating! */ | |
357 | alg->cra_flags &= ~CRYPTO_ALG_TESTED; | |
358 | ||
cad439fc | 359 | list_add(&larval->alg.cra_list, &crypto_alg_list); |
a7008584 | 360 | } else { |
beaaaa37 | 361 | alg->cra_flags |= CRYPTO_ALG_TESTED; |
a7008584 EB |
362 | crypto_alg_finish_registration(alg, true, algs_to_put); |
363 | } | |
cac5818c | 364 | |
5357c6c4 | 365 | out: |
73d3864a HX |
366 | return larval; |
367 | ||
73d3864a HX |
368 | err: |
369 | larval = ERR_PTR(ret); | |
370 | goto out; | |
371 | } | |
372 | ||
373 | void crypto_alg_tested(const char *name, int err) | |
374 | { | |
375 | struct crypto_larval *test; | |
376 | struct crypto_alg *alg; | |
377 | struct crypto_alg *q; | |
378 | LIST_HEAD(list); | |
2bbb3375 | 379 | bool best; |
73d3864a HX |
380 | |
381 | down_write(&crypto_alg_sem); | |
382 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
b8e15992 | 383 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) |
73d3864a HX |
384 | continue; |
385 | ||
386 | test = (struct crypto_larval *)q; | |
387 | ||
388 | if (!strcmp(q->cra_driver_name, name)) | |
389 | goto found; | |
390 | } | |
391 | ||
c7235857 | 392 | pr_err("alg: Unexpected test result for %s: %d\n", name, err); |
73d3864a HX |
393 | goto unlock; |
394 | ||
395 | found: | |
b8e15992 | 396 | q->cra_flags |= CRYPTO_ALG_DEAD; |
73d3864a | 397 | alg = test->adult; |
d6097b8d NS |
398 | |
399 | if (list_empty(&alg->cra_list)) | |
73d3864a HX |
400 | goto complete; |
401 | ||
d6097b8d NS |
402 | if (err == -ECANCELED) |
403 | alg->cra_flags |= CRYPTO_ALG_FIPS_INTERNAL; | |
404 | else if (err) | |
73d3864a | 405 | goto complete; |
d6097b8d NS |
406 | else |
407 | alg->cra_flags &= ~CRYPTO_ALG_FIPS_INTERNAL; | |
73d3864a HX |
408 | |
409 | alg->cra_flags |= CRYPTO_ALG_TESTED; | |
410 | ||
a7008584 EB |
411 | /* |
412 | * If a higher-priority implementation of the same algorithm is | |
413 | * currently being tested, then don't fulfill request larvals. | |
414 | */ | |
2bbb3375 HX |
415 | best = true; |
416 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
417 | if (crypto_is_moribund(q) || !crypto_is_larval(q)) | |
418 | continue; | |
419 | ||
420 | if (strcmp(alg->cra_name, q->cra_name)) | |
421 | continue; | |
422 | ||
423 | if (q->cra_priority > alg->cra_priority) { | |
424 | best = false; | |
425 | break; | |
426 | } | |
427 | } | |
428 | ||
a7008584 | 429 | crypto_alg_finish_registration(alg, best, &list); |
2825982d | 430 | |
73d3864a HX |
431 | complete: |
432 | complete_all(&test->completion); | |
2825982d | 433 | |
73d3864a HX |
434 | unlock: |
435 | up_write(&crypto_alg_sem); | |
436 | ||
437 | crypto_remove_final(&list); | |
cce9e06d | 438 | } |
73d3864a | 439 | EXPORT_SYMBOL_GPL(crypto_alg_tested); |
4cc7720c | 440 | |
22e5b20b | 441 | void crypto_remove_final(struct list_head *list) |
6bfd4809 HX |
442 | { |
443 | struct crypto_alg *alg; | |
444 | struct crypto_alg *n; | |
445 | ||
446 | list_for_each_entry_safe(alg, n, list, cra_list) { | |
447 | list_del_init(&alg->cra_list); | |
448 | crypto_alg_put(alg); | |
449 | } | |
450 | } | |
22e5b20b | 451 | EXPORT_SYMBOL_GPL(crypto_remove_final); |
6bfd4809 | 452 | |
4cc7720c HX |
453 | int crypto_register_alg(struct crypto_alg *alg) |
454 | { | |
73d3864a | 455 | struct crypto_larval *larval; |
a7008584 EB |
456 | LIST_HEAD(algs_to_put); |
457 | bool test_started = false; | |
4cc7720c HX |
458 | int err; |
459 | ||
d6040764 | 460 | alg->cra_flags &= ~CRYPTO_ALG_DEAD; |
4cc7720c HX |
461 | err = crypto_check_alg(alg); |
462 | if (err) | |
463 | return err; | |
464 | ||
465 | down_write(&crypto_alg_sem); | |
a7008584 EB |
466 | larval = __crypto_register_alg(alg, &algs_to_put); |
467 | if (!IS_ERR_OR_NULL(larval)) { | |
06bd9c96 | 468 | test_started = crypto_boot_test_finished(); |
cad439fc | 469 | larval->test_started = test_started; |
a7008584 | 470 | } |
4cc7720c HX |
471 | up_write(&crypto_alg_sem); |
472 | ||
a7008584 | 473 | if (IS_ERR(larval)) |
73d3864a | 474 | return PTR_ERR(larval); |
adad556e HX |
475 | if (test_started) |
476 | crypto_wait_for_test(larval); | |
a7008584 | 477 | crypto_remove_final(&algs_to_put); |
73d3864a | 478 | return 0; |
4cc7720c | 479 | } |
cce9e06d HX |
480 | EXPORT_SYMBOL_GPL(crypto_register_alg); |
481 | ||
6bfd4809 HX |
482 | static int crypto_remove_alg(struct crypto_alg *alg, struct list_head *list) |
483 | { | |
484 | if (unlikely(list_empty(&alg->cra_list))) | |
485 | return -ENOENT; | |
486 | ||
487 | alg->cra_flags |= CRYPTO_ALG_DEAD; | |
488 | ||
6bfd4809 | 489 | list_del_init(&alg->cra_list); |
2bf29016 | 490 | crypto_remove_spawns(alg, list, NULL); |
6bfd4809 HX |
491 | |
492 | return 0; | |
493 | } | |
494 | ||
c6d633a9 | 495 | void crypto_unregister_alg(struct crypto_alg *alg) |
cce9e06d | 496 | { |
6bfd4809 HX |
497 | int ret; |
498 | LIST_HEAD(list); | |
5357c6c4 | 499 | |
cce9e06d | 500 | down_write(&crypto_alg_sem); |
6bfd4809 | 501 | ret = crypto_remove_alg(alg, &list); |
cce9e06d HX |
502 | up_write(&crypto_alg_sem); |
503 | ||
c6d633a9 EB |
504 | if (WARN(ret, "Algorithm %s is not registered", alg->cra_driver_name)) |
505 | return; | |
cce9e06d | 506 | |
a543ada7 THJ |
507 | if (WARN_ON(refcount_read(&alg->cra_refcnt) != 1)) |
508 | return; | |
509 | ||
cce9e06d HX |
510 | if (alg->cra_destroy) |
511 | alg->cra_destroy(alg); | |
512 | ||
6bfd4809 | 513 | crypto_remove_final(&list); |
cce9e06d HX |
514 | } |
515 | EXPORT_SYMBOL_GPL(crypto_unregister_alg); | |
516 | ||
4b004346 MB |
517 | int crypto_register_algs(struct crypto_alg *algs, int count) |
518 | { | |
519 | int i, ret; | |
520 | ||
521 | for (i = 0; i < count; i++) { | |
522 | ret = crypto_register_alg(&algs[i]); | |
523 | if (ret) | |
524 | goto err; | |
525 | } | |
526 | ||
527 | return 0; | |
528 | ||
529 | err: | |
530 | for (--i; i >= 0; --i) | |
531 | crypto_unregister_alg(&algs[i]); | |
532 | ||
533 | return ret; | |
534 | } | |
535 | EXPORT_SYMBOL_GPL(crypto_register_algs); | |
536 | ||
c6d633a9 | 537 | void crypto_unregister_algs(struct crypto_alg *algs, int count) |
4b004346 | 538 | { |
c6d633a9 | 539 | int i; |
4b004346 | 540 | |
c6d633a9 EB |
541 | for (i = 0; i < count; i++) |
542 | crypto_unregister_alg(&algs[i]); | |
4b004346 MB |
543 | } |
544 | EXPORT_SYMBOL_GPL(crypto_unregister_algs); | |
545 | ||
4cc7720c HX |
546 | int crypto_register_template(struct crypto_template *tmpl) |
547 | { | |
548 | struct crypto_template *q; | |
549 | int err = -EEXIST; | |
550 | ||
551 | down_write(&crypto_alg_sem); | |
552 | ||
002c77a4 JW |
553 | crypto_check_module_sig(tmpl->module); |
554 | ||
4cc7720c HX |
555 | list_for_each_entry(q, &crypto_template_list, list) { |
556 | if (q == tmpl) | |
557 | goto out; | |
558 | } | |
559 | ||
560 | list_add(&tmpl->list, &crypto_template_list); | |
561 | err = 0; | |
562 | out: | |
563 | up_write(&crypto_alg_sem); | |
564 | return err; | |
565 | } | |
566 | EXPORT_SYMBOL_GPL(crypto_register_template); | |
567 | ||
9572442d XW |
568 | int crypto_register_templates(struct crypto_template *tmpls, int count) |
569 | { | |
570 | int i, err; | |
571 | ||
572 | for (i = 0; i < count; i++) { | |
573 | err = crypto_register_template(&tmpls[i]); | |
574 | if (err) | |
575 | goto out; | |
576 | } | |
577 | return 0; | |
578 | ||
579 | out: | |
580 | for (--i; i >= 0; --i) | |
581 | crypto_unregister_template(&tmpls[i]); | |
582 | return err; | |
583 | } | |
584 | EXPORT_SYMBOL_GPL(crypto_register_templates); | |
585 | ||
4cc7720c HX |
586 | void crypto_unregister_template(struct crypto_template *tmpl) |
587 | { | |
588 | struct crypto_instance *inst; | |
b67bfe0d | 589 | struct hlist_node *n; |
4cc7720c | 590 | struct hlist_head *list; |
6bfd4809 | 591 | LIST_HEAD(users); |
4cc7720c HX |
592 | |
593 | down_write(&crypto_alg_sem); | |
594 | ||
595 | BUG_ON(list_empty(&tmpl->list)); | |
596 | list_del_init(&tmpl->list); | |
597 | ||
598 | list = &tmpl->instances; | |
b67bfe0d | 599 | hlist_for_each_entry(inst, list, list) { |
6bfd4809 | 600 | int err = crypto_remove_alg(&inst->alg, &users); |
0efcb8d5 | 601 | |
6bfd4809 | 602 | BUG_ON(err); |
4cc7720c HX |
603 | } |
604 | ||
605 | up_write(&crypto_alg_sem); | |
606 | ||
b67bfe0d | 607 | hlist_for_each_entry_safe(inst, n, list, list) { |
ce8614a3 | 608 | BUG_ON(refcount_read(&inst->alg.cra_refcnt) != 1); |
319382a6 | 609 | crypto_free_instance(inst); |
4cc7720c | 610 | } |
6bfd4809 | 611 | crypto_remove_final(&users); |
4cc7720c HX |
612 | } |
613 | EXPORT_SYMBOL_GPL(crypto_unregister_template); | |
614 | ||
9572442d XW |
615 | void crypto_unregister_templates(struct crypto_template *tmpls, int count) |
616 | { | |
617 | int i; | |
618 | ||
619 | for (i = count - 1; i >= 0; --i) | |
620 | crypto_unregister_template(&tmpls[i]); | |
621 | } | |
622 | EXPORT_SYMBOL_GPL(crypto_unregister_templates); | |
623 | ||
4cc7720c HX |
624 | static struct crypto_template *__crypto_lookup_template(const char *name) |
625 | { | |
626 | struct crypto_template *q, *tmpl = NULL; | |
627 | ||
628 | down_read(&crypto_alg_sem); | |
629 | list_for_each_entry(q, &crypto_template_list, list) { | |
630 | if (strcmp(q->name, name)) | |
631 | continue; | |
632 | if (unlikely(!crypto_tmpl_get(q))) | |
633 | continue; | |
634 | ||
635 | tmpl = q; | |
636 | break; | |
637 | } | |
638 | up_read(&crypto_alg_sem); | |
639 | ||
640 | return tmpl; | |
641 | } | |
642 | ||
643 | struct crypto_template *crypto_lookup_template(const char *name) | |
644 | { | |
4943ba16 KC |
645 | return try_then_request_module(__crypto_lookup_template(name), |
646 | "crypto-%s", name); | |
4cc7720c HX |
647 | } |
648 | EXPORT_SYMBOL_GPL(crypto_lookup_template); | |
649 | ||
650 | int crypto_register_instance(struct crypto_template *tmpl, | |
651 | struct crypto_instance *inst) | |
652 | { | |
73d3864a | 653 | struct crypto_larval *larval; |
5f567fff | 654 | struct crypto_spawn *spawn; |
d6097b8d | 655 | u32 fips_internal = 0; |
a7008584 | 656 | LIST_HEAD(algs_to_put); |
73d3864a | 657 | int err; |
4cc7720c | 658 | |
4cc7720c HX |
659 | err = crypto_check_alg(&inst->alg); |
660 | if (err) | |
9c521a20 SM |
661 | return err; |
662 | ||
4cc7720c | 663 | inst->alg.cra_module = tmpl->module; |
64a947b1 | 664 | inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE; |
4cc7720c HX |
665 | |
666 | down_write(&crypto_alg_sem); | |
667 | ||
5f567fff HX |
668 | larval = ERR_PTR(-EAGAIN); |
669 | for (spawn = inst->spawns; spawn;) { | |
670 | struct crypto_spawn *next; | |
671 | ||
672 | if (spawn->dead) | |
673 | goto unlock; | |
674 | ||
675 | next = spawn->next; | |
676 | spawn->inst = inst; | |
677 | spawn->registered = true; | |
678 | ||
d6097b8d NS |
679 | fips_internal |= spawn->alg->cra_flags; |
680 | ||
aed11cf5 | 681 | crypto_mod_put(spawn->alg); |
5f567fff HX |
682 | |
683 | spawn = next; | |
684 | } | |
685 | ||
d6097b8d NS |
686 | inst->alg.cra_flags |= (fips_internal & CRYPTO_ALG_FIPS_INTERNAL); |
687 | ||
a7008584 | 688 | larval = __crypto_register_alg(&inst->alg, &algs_to_put); |
73d3864a | 689 | if (IS_ERR(larval)) |
4cc7720c | 690 | goto unlock; |
cad439fc HX |
691 | else if (larval) |
692 | larval->test_started = true; | |
adad556e | 693 | |
4cc7720c HX |
694 | hlist_add_head(&inst->list, &tmpl->instances); |
695 | inst->tmpl = tmpl; | |
696 | ||
697 | unlock: | |
698 | up_write(&crypto_alg_sem); | |
699 | ||
a7008584 EB |
700 | if (IS_ERR(larval)) |
701 | return PTR_ERR(larval); | |
702 | if (larval) | |
703 | crypto_wait_for_test(larval); | |
704 | crypto_remove_final(&algs_to_put); | |
705 | return 0; | |
4cc7720c HX |
706 | } |
707 | EXPORT_SYMBOL_GPL(crypto_register_instance); | |
ce3fd840 | 708 | |
c6d633a9 | 709 | void crypto_unregister_instance(struct crypto_instance *inst) |
ce3fd840 | 710 | { |
1f723710 | 711 | LIST_HEAD(list); |
ce3fd840 | 712 | |
ce3fd840 SK |
713 | down_write(&crypto_alg_sem); |
714 | ||
87b16756 | 715 | crypto_remove_spawns(&inst->alg, &list, NULL); |
1f723710 | 716 | crypto_remove_instance(inst, &list); |
ce3fd840 SK |
717 | |
718 | up_write(&crypto_alg_sem); | |
719 | ||
1f723710 | 720 | crypto_remove_final(&list); |
ce3fd840 SK |
721 | } |
722 | EXPORT_SYMBOL_GPL(crypto_unregister_instance); | |
4cc7720c | 723 | |
aed11cf5 EB |
724 | int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst, |
725 | const char *name, u32 type, u32 mask) | |
6bfd4809 | 726 | { |
aed11cf5 | 727 | struct crypto_alg *alg; |
6bfd4809 HX |
728 | int err = -EAGAIN; |
729 | ||
6b476662 EB |
730 | if (WARN_ON_ONCE(inst == NULL)) |
731 | return -EINVAL; | |
732 | ||
aed11cf5 EB |
733 | /* Allow the result of crypto_attr_alg_name() to be passed directly */ |
734 | if (IS_ERR(name)) | |
735 | return PTR_ERR(name); | |
5f567fff | 736 | |
d6097b8d NS |
737 | alg = crypto_find_alg(name, spawn->frontend, |
738 | type | CRYPTO_ALG_FIPS_INTERNAL, mask); | |
aed11cf5 EB |
739 | if (IS_ERR(alg)) |
740 | return PTR_ERR(alg); | |
6bfd4809 HX |
741 | |
742 | down_write(&crypto_alg_sem); | |
743 | if (!crypto_is_moribund(alg)) { | |
744 | list_add(&spawn->list, &alg->cra_users); | |
745 | spawn->alg = alg; | |
aed11cf5 EB |
746 | spawn->mask = mask; |
747 | spawn->next = inst->spawns; | |
748 | inst->spawns = spawn; | |
7bcb2c99 EB |
749 | inst->alg.cra_flags |= |
750 | (alg->cra_flags & CRYPTO_ALG_INHERITED_FLAGS); | |
6bfd4809 HX |
751 | err = 0; |
752 | } | |
753 | up_write(&crypto_alg_sem); | |
5f567fff HX |
754 | if (err) |
755 | crypto_mod_put(alg); | |
d6ef2f19 HX |
756 | return err; |
757 | } | |
758 | EXPORT_SYMBOL_GPL(crypto_grab_spawn); | |
759 | ||
6bfd4809 HX |
760 | void crypto_drop_spawn(struct crypto_spawn *spawn) |
761 | { | |
ff670627 EB |
762 | if (!spawn->alg) /* not yet initialized? */ |
763 | return; | |
764 | ||
6bfd4809 | 765 | down_write(&crypto_alg_sem); |
4f87ee11 | 766 | if (!spawn->dead) |
7db3b61b | 767 | list_del(&spawn->list); |
6bfd4809 | 768 | up_write(&crypto_alg_sem); |
5f567fff | 769 | |
aed11cf5 | 770 | if (!spawn->registered) |
5f567fff | 771 | crypto_mod_put(spawn->alg); |
6bfd4809 HX |
772 | } |
773 | EXPORT_SYMBOL_GPL(crypto_drop_spawn); | |
774 | ||
97eedce1 | 775 | static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn) |
6bfd4809 | 776 | { |
6603523b HX |
777 | struct crypto_alg *alg = ERR_PTR(-EAGAIN); |
778 | struct crypto_alg *target; | |
779 | bool shoot = false; | |
6bfd4809 HX |
780 | |
781 | down_read(&crypto_alg_sem); | |
6603523b HX |
782 | if (!spawn->dead) { |
783 | alg = spawn->alg; | |
784 | if (!crypto_mod_get(alg)) { | |
785 | target = crypto_alg_get(alg); | |
786 | shoot = true; | |
787 | alg = ERR_PTR(-EAGAIN); | |
788 | } | |
6bfd4809 | 789 | } |
73669cc5 | 790 | up_read(&crypto_alg_sem); |
6bfd4809 | 791 | |
6603523b HX |
792 | if (shoot) { |
793 | crypto_shoot_alg(target); | |
794 | crypto_alg_put(target); | |
795 | } | |
796 | ||
797 | return alg; | |
97eedce1 HX |
798 | } |
799 | ||
800 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, | |
801 | u32 mask) | |
802 | { | |
803 | struct crypto_alg *alg; | |
804 | struct crypto_tfm *tfm; | |
805 | ||
806 | alg = crypto_spawn_alg(spawn); | |
807 | if (IS_ERR(alg)) | |
808 | return ERR_CAST(alg); | |
809 | ||
2e306ee0 HX |
810 | tfm = ERR_PTR(-EINVAL); |
811 | if (unlikely((alg->cra_flags ^ type) & mask)) | |
812 | goto out_put_alg; | |
813 | ||
27d2a330 | 814 | tfm = __crypto_alloc_tfm(alg, type, mask); |
6bfd4809 | 815 | if (IS_ERR(tfm)) |
2e306ee0 HX |
816 | goto out_put_alg; |
817 | ||
818 | return tfm; | |
6bfd4809 | 819 | |
2e306ee0 HX |
820 | out_put_alg: |
821 | crypto_mod_put(alg); | |
6bfd4809 HX |
822 | return tfm; |
823 | } | |
824 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm); | |
825 | ||
97eedce1 HX |
826 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn) |
827 | { | |
828 | struct crypto_alg *alg; | |
829 | struct crypto_tfm *tfm; | |
830 | ||
831 | alg = crypto_spawn_alg(spawn); | |
832 | if (IS_ERR(alg)) | |
833 | return ERR_CAST(alg); | |
834 | ||
835 | tfm = crypto_create_tfm(alg, spawn->frontend); | |
836 | if (IS_ERR(tfm)) | |
837 | goto out_put_alg; | |
838 | ||
839 | return tfm; | |
840 | ||
841 | out_put_alg: | |
842 | crypto_mod_put(alg); | |
843 | return tfm; | |
844 | } | |
845 | EXPORT_SYMBOL_GPL(crypto_spawn_tfm2); | |
846 | ||
2825982d HX |
847 | int crypto_register_notifier(struct notifier_block *nb) |
848 | { | |
849 | return blocking_notifier_chain_register(&crypto_chain, nb); | |
850 | } | |
851 | EXPORT_SYMBOL_GPL(crypto_register_notifier); | |
852 | ||
853 | int crypto_unregister_notifier(struct notifier_block *nb) | |
854 | { | |
855 | return blocking_notifier_chain_unregister(&crypto_chain, nb); | |
856 | } | |
857 | EXPORT_SYMBOL_GPL(crypto_unregister_notifier); | |
858 | ||
ebc610e5 | 859 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) |
7fed0bf2 | 860 | { |
39e1ee01 | 861 | struct rtattr *rta = tb[0]; |
ebc610e5 HX |
862 | struct crypto_attr_type *algt; |
863 | ||
864 | if (!rta) | |
865 | return ERR_PTR(-ENOENT); | |
866 | if (RTA_PAYLOAD(rta) < sizeof(*algt)) | |
867 | return ERR_PTR(-EINVAL); | |
39e1ee01 HX |
868 | if (rta->rta_type != CRYPTOA_TYPE) |
869 | return ERR_PTR(-EINVAL); | |
ebc610e5 HX |
870 | |
871 | algt = RTA_DATA(rta); | |
872 | ||
873 | return algt; | |
874 | } | |
875 | EXPORT_SYMBOL_GPL(crypto_get_attr_type); | |
876 | ||
7bcb2c99 EB |
877 | /** |
878 | * crypto_check_attr_type() - check algorithm type and compute inherited mask | |
879 | * @tb: the template parameters | |
880 | * @type: the algorithm type the template would be instantiated as | |
881 | * @mask_ret: (output) the mask that should be passed to crypto_grab_*() | |
882 | * to restrict the flags of any inner algorithms | |
883 | * | |
884 | * Validate that the algorithm type the user requested is compatible with the | |
885 | * one the template would actually be instantiated as. E.g., if the user is | |
886 | * doing crypto_alloc_shash("cbc(aes)", ...), this would return an error because | |
887 | * the "cbc" template creates an "skcipher" algorithm, not an "shash" algorithm. | |
888 | * | |
889 | * Also compute the mask to use to restrict the flags of any inner algorithms. | |
890 | * | |
891 | * Return: 0 on success; -errno on failure | |
892 | */ | |
893 | int crypto_check_attr_type(struct rtattr **tb, u32 type, u32 *mask_ret) | |
ebc610e5 HX |
894 | { |
895 | struct crypto_attr_type *algt; | |
896 | ||
897 | algt = crypto_get_attr_type(tb); | |
898 | if (IS_ERR(algt)) | |
899 | return PTR_ERR(algt); | |
900 | ||
901 | if ((algt->type ^ type) & algt->mask) | |
902 | return -EINVAL; | |
903 | ||
7bcb2c99 | 904 | *mask_ret = crypto_algt_inherited_mask(algt); |
ebc610e5 HX |
905 | return 0; |
906 | } | |
907 | EXPORT_SYMBOL_GPL(crypto_check_attr_type); | |
908 | ||
68b6c7d6 | 909 | const char *crypto_attr_alg_name(struct rtattr *rta) |
ebc610e5 | 910 | { |
7fed0bf2 HX |
911 | struct crypto_attr_alg *alga; |
912 | ||
ebc610e5 HX |
913 | if (!rta) |
914 | return ERR_PTR(-ENOENT); | |
915 | if (RTA_PAYLOAD(rta) < sizeof(*alga)) | |
7fed0bf2 | 916 | return ERR_PTR(-EINVAL); |
39e1ee01 HX |
917 | if (rta->rta_type != CRYPTOA_ALG) |
918 | return ERR_PTR(-EINVAL); | |
7fed0bf2 HX |
919 | |
920 | alga = RTA_DATA(rta); | |
921 | alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0; | |
922 | ||
68b6c7d6 HX |
923 | return alga->name; |
924 | } | |
925 | EXPORT_SYMBOL_GPL(crypto_attr_alg_name); | |
926 | ||
32f27c74 HX |
927 | int crypto_inst_setname(struct crypto_instance *inst, const char *name, |
928 | struct crypto_alg *alg) | |
929 | { | |
930 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name, | |
931 | alg->cra_name) >= CRYPTO_MAX_ALG_NAME) | |
932 | return -ENAMETOOLONG; | |
933 | ||
934 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", | |
935 | name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
936 | return -ENAMETOOLONG; | |
937 | ||
938 | return 0; | |
939 | } | |
940 | EXPORT_SYMBOL_GPL(crypto_inst_setname); | |
941 | ||
b5b7f088 HX |
942 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen) |
943 | { | |
944 | INIT_LIST_HEAD(&queue->list); | |
945 | queue->backlog = &queue->list; | |
946 | queue->qlen = 0; | |
947 | queue->max_qlen = max_qlen; | |
948 | } | |
949 | EXPORT_SYMBOL_GPL(crypto_init_queue); | |
950 | ||
951 | int crypto_enqueue_request(struct crypto_queue *queue, | |
952 | struct crypto_async_request *request) | |
953 | { | |
954 | int err = -EINPROGRESS; | |
955 | ||
956 | if (unlikely(queue->qlen >= queue->max_qlen)) { | |
6b80ea38 GBY |
957 | if (!(request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { |
958 | err = -ENOSPC; | |
b5b7f088 | 959 | goto out; |
6b80ea38 GBY |
960 | } |
961 | err = -EBUSY; | |
b5b7f088 HX |
962 | if (queue->backlog == &queue->list) |
963 | queue->backlog = &request->list; | |
964 | } | |
965 | ||
966 | queue->qlen++; | |
967 | list_add_tail(&request->list, &queue->list); | |
968 | ||
969 | out: | |
970 | return err; | |
971 | } | |
972 | EXPORT_SYMBOL_GPL(crypto_enqueue_request); | |
973 | ||
ec6e2bf3 IP |
974 | void crypto_enqueue_request_head(struct crypto_queue *queue, |
975 | struct crypto_async_request *request) | |
976 | { | |
4140aafc OB |
977 | if (unlikely(queue->qlen >= queue->max_qlen)) |
978 | queue->backlog = queue->backlog->prev; | |
979 | ||
ec6e2bf3 IP |
980 | queue->qlen++; |
981 | list_add(&request->list, &queue->list); | |
982 | } | |
983 | EXPORT_SYMBOL_GPL(crypto_enqueue_request_head); | |
984 | ||
31d228cc | 985 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) |
b5b7f088 HX |
986 | { |
987 | struct list_head *request; | |
988 | ||
989 | if (unlikely(!queue->qlen)) | |
990 | return NULL; | |
991 | ||
992 | queue->qlen--; | |
993 | ||
994 | if (queue->backlog != &queue->list) | |
995 | queue->backlog = queue->backlog->next; | |
996 | ||
997 | request = queue->list.next; | |
998 | list_del(request); | |
999 | ||
31d228cc | 1000 | return list_entry(request, struct crypto_async_request, list); |
b5b7f088 HX |
1001 | } |
1002 | EXPORT_SYMBOL_GPL(crypto_dequeue_request); | |
1003 | ||
7613636d HX |
1004 | static inline void crypto_inc_byte(u8 *a, unsigned int size) |
1005 | { | |
1006 | u8 *b = (a + size); | |
1007 | u8 c; | |
1008 | ||
1009 | for (; size; size--) { | |
1010 | c = *--b + 1; | |
1011 | *b = c; | |
1012 | if (c) | |
1013 | break; | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | void crypto_inc(u8 *a, unsigned int size) | |
1018 | { | |
1019 | __be32 *b = (__be32 *)(a + size); | |
1020 | u32 c; | |
1021 | ||
db91af0f | 1022 | if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) || |
27c539ae | 1023 | IS_ALIGNED((unsigned long)b, __alignof__(*b))) |
db91af0f AB |
1024 | for (; size >= 4; size -= 4) { |
1025 | c = be32_to_cpu(*--b) + 1; | |
1026 | *b = cpu_to_be32(c); | |
27c539ae | 1027 | if (likely(c)) |
db91af0f AB |
1028 | return; |
1029 | } | |
7613636d HX |
1030 | |
1031 | crypto_inc_byte(a, size); | |
1032 | } | |
1033 | EXPORT_SYMBOL_GPL(crypto_inc); | |
1034 | ||
38d21433 HX |
1035 | unsigned int crypto_alg_extsize(struct crypto_alg *alg) |
1036 | { | |
c2110f28 HX |
1037 | return alg->cra_ctxsize + |
1038 | (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1)); | |
38d21433 HX |
1039 | } |
1040 | EXPORT_SYMBOL_GPL(crypto_alg_extsize); | |
1041 | ||
f2aefdab HX |
1042 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
1043 | u32 type, u32 mask) | |
1044 | { | |
1045 | int ret = 0; | |
1046 | struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask); | |
1047 | ||
1048 | if (!IS_ERR(alg)) { | |
1049 | crypto_mod_put(alg); | |
1050 | ret = 1; | |
1051 | } | |
1052 | ||
1053 | return ret; | |
1054 | } | |
1055 | EXPORT_SYMBOL_GPL(crypto_type_has_alg); | |
1056 | ||
adad556e HX |
1057 | static void __init crypto_start_tests(void) |
1058 | { | |
06bd9c96 EB |
1059 | if (IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS)) |
1060 | return; | |
1061 | ||
adad556e HX |
1062 | for (;;) { |
1063 | struct crypto_larval *larval = NULL; | |
1064 | struct crypto_alg *q; | |
1065 | ||
1066 | down_write(&crypto_alg_sem); | |
1067 | ||
1068 | list_for_each_entry(q, &crypto_alg_list, cra_list) { | |
1069 | struct crypto_larval *l; | |
1070 | ||
1071 | if (!crypto_is_larval(q)) | |
1072 | continue; | |
1073 | ||
1074 | l = (void *)q; | |
1075 | ||
1076 | if (!crypto_is_test_larval(l)) | |
1077 | continue; | |
1078 | ||
1079 | if (l->test_started) | |
1080 | continue; | |
1081 | ||
1082 | l->test_started = true; | |
1083 | larval = l; | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | up_write(&crypto_alg_sem); | |
1088 | ||
1089 | if (!larval) | |
1090 | break; | |
1091 | ||
1092 | crypto_wait_for_test(larval); | |
1093 | } | |
1094 | ||
06bd9c96 | 1095 | set_crypto_boot_test_finished(); |
adad556e HX |
1096 | } |
1097 | ||
cce9e06d HX |
1098 | static int __init crypto_algapi_init(void) |
1099 | { | |
1100 | crypto_init_proc(); | |
adad556e | 1101 | crypto_start_tests(); |
cce9e06d HX |
1102 | return 0; |
1103 | } | |
1104 | ||
1105 | static void __exit crypto_algapi_exit(void) | |
1106 | { | |
1107 | crypto_exit_proc(); | |
1108 | } | |
1109 | ||
adad556e HX |
1110 | /* |
1111 | * We run this at late_initcall so that all the built-in algorithms | |
1112 | * have had a chance to register themselves first. | |
1113 | */ | |
1114 | late_initcall(crypto_algapi_init); | |
cce9e06d HX |
1115 | module_exit(crypto_algapi_exit); |
1116 | ||
1117 | MODULE_LICENSE("GPL"); | |
1118 | MODULE_DESCRIPTION("Cryptographic algorithms API"); | |
c6ce9c58 | 1119 | MODULE_SOFTDEP("pre: cryptomgr"); |