Commit | Line | Data |
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76181c13 | 1 | /* Request a key from userspace |
1da177e4 | 2 | * |
76181c13 | 3 | * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved. |
1da177e4 LT |
4 | * Written by David Howells (dhowells@redhat.com) |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
f1a9badc DH |
10 | * |
11 | * See Documentation/keys-request-key.txt | |
1da177e4 LT |
12 | */ |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/sched.h> | |
16 | #include <linux/kmod.h> | |
17 | #include <linux/err.h> | |
3e30148c | 18 | #include <linux/keyctl.h> |
fdb89bce | 19 | #include <linux/slab.h> |
1da177e4 LT |
20 | #include "internal.h" |
21 | ||
e9e349b0 DH |
22 | #define key_negative_timeout 60 /* default timeout on a negative key's existence */ |
23 | ||
76181c13 DH |
24 | /* |
25 | * wait_on_bit() sleep function for uninterruptible waiting | |
26 | */ | |
27 | static int key_wait_bit(void *flags) | |
28 | { | |
29 | schedule(); | |
30 | return 0; | |
31 | } | |
32 | ||
33 | /* | |
34 | * wait_on_bit() sleep function for interruptible waiting | |
35 | */ | |
36 | static int key_wait_bit_intr(void *flags) | |
37 | { | |
38 | schedule(); | |
39 | return signal_pending(current) ? -ERESTARTSYS : 0; | |
40 | } | |
41 | ||
42 | /* | |
43 | * call to complete the construction of a key | |
44 | */ | |
45 | void complete_request_key(struct key_construction *cons, int error) | |
46 | { | |
47 | kenter("{%d,%d},%d", cons->key->serial, cons->authkey->serial, error); | |
1da177e4 | 48 | |
76181c13 DH |
49 | if (error < 0) |
50 | key_negate_and_link(cons->key, key_negative_timeout, NULL, | |
51 | cons->authkey); | |
52 | else | |
53 | key_revoke(cons->authkey); | |
54 | ||
55 | key_put(cons->key); | |
56 | key_put(cons->authkey); | |
57 | kfree(cons); | |
58 | } | |
59 | EXPORT_SYMBOL(complete_request_key); | |
1da177e4 | 60 | |
1da177e4 LT |
61 | /* |
62 | * request userspace finish the construction of a key | |
b5f545c8 | 63 | * - execute "/sbin/request-key <op> <key> <uid> <gid> <keyring> <keyring> <keyring>" |
1da177e4 | 64 | */ |
76181c13 | 65 | static int call_sbin_request_key(struct key_construction *cons, |
4e54f085 DH |
66 | const char *op, |
67 | void *aux) | |
1da177e4 LT |
68 | { |
69 | struct task_struct *tsk = current; | |
1da177e4 | 70 | key_serial_t prkey, sskey; |
76181c13 | 71 | struct key *key = cons->key, *authkey = cons->authkey, *keyring; |
b5f545c8 | 72 | char *argv[9], *envp[3], uid_str[12], gid_str[12]; |
1da177e4 | 73 | char key_str[12], keyring_str[3][12]; |
b5f545c8 | 74 | char desc[20]; |
3e30148c DH |
75 | int ret, i; |
76 | ||
b5f545c8 | 77 | kenter("{%d},{%d},%s", key->serial, authkey->serial, op); |
3e30148c | 78 | |
8bbf4976 DH |
79 | ret = install_user_keyrings(); |
80 | if (ret < 0) | |
81 | goto error_alloc; | |
82 | ||
b5f545c8 DH |
83 | /* allocate a new session keyring */ |
84 | sprintf(desc, "_req.%u", key->serial); | |
85 | ||
47d804bf | 86 | keyring = keyring_alloc(desc, current_fsuid(), current_fsgid(), current, |
7e047ef5 | 87 | KEY_ALLOC_QUOTA_OVERRUN, NULL); |
b5f545c8 DH |
88 | if (IS_ERR(keyring)) { |
89 | ret = PTR_ERR(keyring); | |
90 | goto error_alloc; | |
3e30148c | 91 | } |
1da177e4 | 92 | |
b5f545c8 DH |
93 | /* attach the auth key to the session keyring */ |
94 | ret = __key_link(keyring, authkey); | |
95 | if (ret < 0) | |
96 | goto error_link; | |
97 | ||
1da177e4 | 98 | /* record the UID and GID */ |
47d804bf DH |
99 | sprintf(uid_str, "%d", current_fsuid()); |
100 | sprintf(gid_str, "%d", current_fsgid()); | |
1da177e4 LT |
101 | |
102 | /* we say which key is under construction */ | |
103 | sprintf(key_str, "%d", key->serial); | |
104 | ||
105 | /* we specify the process's default keyrings */ | |
106 | sprintf(keyring_str[0], "%d", | |
107 | tsk->thread_keyring ? tsk->thread_keyring->serial : 0); | |
108 | ||
109 | prkey = 0; | |
110 | if (tsk->signal->process_keyring) | |
111 | prkey = tsk->signal->process_keyring->serial; | |
112 | ||
3e30148c | 113 | sprintf(keyring_str[1], "%d", prkey); |
1da177e4 | 114 | |
3e30148c DH |
115 | if (tsk->signal->session_keyring) { |
116 | rcu_read_lock(); | |
117 | sskey = rcu_dereference(tsk->signal->session_keyring)->serial; | |
118 | rcu_read_unlock(); | |
76181c13 | 119 | } else { |
1da177e4 | 120 | sskey = tsk->user->session_keyring->serial; |
3e30148c | 121 | } |
1da177e4 | 122 | |
1da177e4 LT |
123 | sprintf(keyring_str[2], "%d", sskey); |
124 | ||
125 | /* set up a minimal environment */ | |
126 | i = 0; | |
127 | envp[i++] = "HOME=/"; | |
128 | envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; | |
129 | envp[i] = NULL; | |
130 | ||
131 | /* set up the argument list */ | |
132 | i = 0; | |
133 | argv[i++] = "/sbin/request-key"; | |
134 | argv[i++] = (char *) op; | |
135 | argv[i++] = key_str; | |
136 | argv[i++] = uid_str; | |
137 | argv[i++] = gid_str; | |
138 | argv[i++] = keyring_str[0]; | |
139 | argv[i++] = keyring_str[1]; | |
140 | argv[i++] = keyring_str[2]; | |
1da177e4 LT |
141 | argv[i] = NULL; |
142 | ||
143 | /* do it */ | |
86313c48 JF |
144 | ret = call_usermodehelper_keys(argv[0], argv, envp, keyring, |
145 | UMH_WAIT_PROC); | |
76181c13 DH |
146 | kdebug("usermode -> 0x%x", ret); |
147 | if (ret >= 0) { | |
148 | /* ret is the exit/wait code */ | |
149 | if (test_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags) || | |
150 | key_validate(key) < 0) | |
151 | ret = -ENOKEY; | |
152 | else | |
153 | /* ignore any errors from userspace if the key was | |
154 | * instantiated */ | |
155 | ret = 0; | |
156 | } | |
3e30148c | 157 | |
b5f545c8 DH |
158 | error_link: |
159 | key_put(keyring); | |
3e30148c | 160 | |
b5f545c8 | 161 | error_alloc: |
3e30148c | 162 | kleave(" = %d", ret); |
76181c13 | 163 | complete_request_key(cons, ret); |
3e30148c | 164 | return ret; |
76181c13 | 165 | } |
1da177e4 | 166 | |
1da177e4 | 167 | /* |
76181c13 | 168 | * call out to userspace for key construction |
1da177e4 LT |
169 | * - we ignore program failure and go on key status instead |
170 | */ | |
4a38e122 | 171 | static int construct_key(struct key *key, const void *callout_info, |
8bbf4976 DH |
172 | size_t callout_len, void *aux, |
173 | struct key *dest_keyring) | |
1da177e4 | 174 | { |
76181c13 | 175 | struct key_construction *cons; |
b5f545c8 | 176 | request_key_actor_t actor; |
76181c13 DH |
177 | struct key *authkey; |
178 | int ret; | |
1da177e4 | 179 | |
4a38e122 | 180 | kenter("%d,%p,%zu,%p", key->serial, callout_info, callout_len, aux); |
3e30148c | 181 | |
76181c13 DH |
182 | cons = kmalloc(sizeof(*cons), GFP_KERNEL); |
183 | if (!cons) | |
184 | return -ENOMEM; | |
1da177e4 | 185 | |
b5f545c8 | 186 | /* allocate an authorisation key */ |
8bbf4976 DH |
187 | authkey = request_key_auth_new(key, callout_info, callout_len, |
188 | dest_keyring); | |
b5f545c8 | 189 | if (IS_ERR(authkey)) { |
76181c13 | 190 | kfree(cons); |
b5f545c8 DH |
191 | ret = PTR_ERR(authkey); |
192 | authkey = NULL; | |
76181c13 DH |
193 | } else { |
194 | cons->authkey = key_get(authkey); | |
195 | cons->key = key_get(key); | |
196 | ||
197 | /* make the call */ | |
198 | actor = call_sbin_request_key; | |
199 | if (key->type->request_key) | |
200 | actor = key->type->request_key; | |
201 | ||
202 | ret = actor(cons, "create", aux); | |
203 | ||
204 | /* check that the actor called complete_request_key() prior to | |
205 | * returning an error */ | |
206 | WARN_ON(ret < 0 && | |
207 | !test_bit(KEY_FLAG_REVOKED, &authkey->flags)); | |
208 | key_put(authkey); | |
1da177e4 LT |
209 | } |
210 | ||
76181c13 DH |
211 | kleave(" = %d", ret); |
212 | return ret; | |
213 | } | |
1da177e4 | 214 | |
3e30148c | 215 | /* |
8bbf4976 DH |
216 | * get the appropriate destination keyring for the request |
217 | * - we return whatever keyring we select with an extra reference upon it which | |
218 | * the caller must release | |
3e30148c | 219 | */ |
8bbf4976 | 220 | static void construct_get_dest_keyring(struct key **_dest_keyring) |
3e30148c | 221 | { |
8bbf4976 | 222 | struct request_key_auth *rka; |
3e30148c | 223 | struct task_struct *tsk = current; |
8bbf4976 | 224 | struct key *dest_keyring = *_dest_keyring, *authkey; |
3e30148c | 225 | |
8bbf4976 | 226 | kenter("%p", dest_keyring); |
3e30148c DH |
227 | |
228 | /* find the appropriate keyring */ | |
8bbf4976 DH |
229 | if (dest_keyring) { |
230 | /* the caller supplied one */ | |
231 | key_get(dest_keyring); | |
232 | } else { | |
233 | /* use a default keyring; falling through the cases until we | |
234 | * find one that we actually have */ | |
3e30148c DH |
235 | switch (tsk->jit_keyring) { |
236 | case KEY_REQKEY_DEFL_DEFAULT: | |
8bbf4976 DH |
237 | case KEY_REQKEY_DEFL_REQUESTOR_KEYRING: |
238 | if (tsk->request_key_auth) { | |
239 | authkey = tsk->request_key_auth; | |
240 | down_read(&authkey->sem); | |
241 | rka = authkey->payload.data; | |
242 | if (!test_bit(KEY_FLAG_REVOKED, | |
243 | &authkey->flags)) | |
244 | dest_keyring = | |
245 | key_get(rka->dest_keyring); | |
246 | up_read(&authkey->sem); | |
247 | if (dest_keyring) | |
248 | break; | |
249 | } | |
250 | ||
3e30148c | 251 | case KEY_REQKEY_DEFL_THREAD_KEYRING: |
8bbf4976 | 252 | dest_keyring = key_get(tsk->thread_keyring); |
3e30148c DH |
253 | if (dest_keyring) |
254 | break; | |
255 | ||
256 | case KEY_REQKEY_DEFL_PROCESS_KEYRING: | |
8bbf4976 | 257 | dest_keyring = key_get(tsk->signal->process_keyring); |
3e30148c DH |
258 | if (dest_keyring) |
259 | break; | |
260 | ||
261 | case KEY_REQKEY_DEFL_SESSION_KEYRING: | |
262 | rcu_read_lock(); | |
263 | dest_keyring = key_get( | |
264 | rcu_dereference(tsk->signal->session_keyring)); | |
265 | rcu_read_unlock(); | |
3e30148c DH |
266 | |
267 | if (dest_keyring) | |
268 | break; | |
269 | ||
270 | case KEY_REQKEY_DEFL_USER_SESSION_KEYRING: | |
8bbf4976 | 271 | dest_keyring = key_get(tsk->user->session_keyring); |
3e30148c DH |
272 | break; |
273 | ||
274 | case KEY_REQKEY_DEFL_USER_KEYRING: | |
8bbf4976 | 275 | dest_keyring = key_get(tsk->user->uid_keyring); |
3e30148c DH |
276 | break; |
277 | ||
278 | case KEY_REQKEY_DEFL_GROUP_KEYRING: | |
279 | default: | |
280 | BUG(); | |
281 | } | |
282 | } | |
283 | ||
8bbf4976 DH |
284 | *_dest_keyring = dest_keyring; |
285 | kleave(" [dk %d]", key_serial(dest_keyring)); | |
286 | return; | |
76181c13 | 287 | } |
3e30148c | 288 | |
76181c13 DH |
289 | /* |
290 | * allocate a new key in under-construction state and attempt to link it in to | |
291 | * the requested place | |
292 | * - may return a key that's already under construction instead | |
293 | */ | |
294 | static int construct_alloc_key(struct key_type *type, | |
295 | const char *description, | |
296 | struct key *dest_keyring, | |
297 | unsigned long flags, | |
298 | struct key_user *user, | |
299 | struct key **_key) | |
300 | { | |
301 | struct key *key; | |
302 | key_ref_t key_ref; | |
303 | ||
304 | kenter("%s,%s,,,", type->name, description); | |
305 | ||
306 | mutex_lock(&user->cons_lock); | |
307 | ||
308 | key = key_alloc(type, description, | |
47d804bf | 309 | current_fsuid(), current_fsgid(), current, KEY_POS_ALL, |
76181c13 DH |
310 | flags); |
311 | if (IS_ERR(key)) | |
312 | goto alloc_failed; | |
313 | ||
314 | set_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags); | |
315 | ||
8bbf4976 | 316 | down_write(&dest_keyring->sem); |
76181c13 DH |
317 | |
318 | /* attach the key to the destination keyring under lock, but we do need | |
319 | * to do another check just in case someone beat us to it whilst we | |
320 | * waited for locks */ | |
321 | mutex_lock(&key_construction_mutex); | |
322 | ||
323 | key_ref = search_process_keyrings(type, description, type->match, | |
324 | current); | |
325 | if (!IS_ERR(key_ref)) | |
326 | goto key_already_present; | |
327 | ||
8bbf4976 | 328 | __key_link(dest_keyring, key); |
76181c13 DH |
329 | |
330 | mutex_unlock(&key_construction_mutex); | |
8bbf4976 | 331 | up_write(&dest_keyring->sem); |
76181c13 DH |
332 | mutex_unlock(&user->cons_lock); |
333 | *_key = key; | |
334 | kleave(" = 0 [%d]", key_serial(key)); | |
335 | return 0; | |
336 | ||
337 | key_already_present: | |
338 | mutex_unlock(&key_construction_mutex); | |
339 | if (dest_keyring) | |
340 | up_write(&dest_keyring->sem); | |
341 | mutex_unlock(&user->cons_lock); | |
342 | key_put(key); | |
343 | *_key = key = key_ref_to_ptr(key_ref); | |
344 | kleave(" = -EINPROGRESS [%d]", key_serial(key)); | |
345 | return -EINPROGRESS; | |
346 | ||
347 | alloc_failed: | |
348 | mutex_unlock(&user->cons_lock); | |
349 | *_key = NULL; | |
350 | kleave(" = %ld", PTR_ERR(key)); | |
351 | return PTR_ERR(key); | |
352 | } | |
353 | ||
354 | /* | |
355 | * commence key construction | |
356 | */ | |
357 | static struct key *construct_key_and_link(struct key_type *type, | |
358 | const char *description, | |
359 | const char *callout_info, | |
4a38e122 | 360 | size_t callout_len, |
76181c13 DH |
361 | void *aux, |
362 | struct key *dest_keyring, | |
363 | unsigned long flags) | |
364 | { | |
365 | struct key_user *user; | |
366 | struct key *key; | |
367 | int ret; | |
368 | ||
47d804bf | 369 | user = key_user_lookup(current_fsuid()); |
76181c13 DH |
370 | if (!user) |
371 | return ERR_PTR(-ENOMEM); | |
372 | ||
8bbf4976 DH |
373 | construct_get_dest_keyring(&dest_keyring); |
374 | ||
76181c13 DH |
375 | ret = construct_alloc_key(type, description, dest_keyring, flags, user, |
376 | &key); | |
377 | key_user_put(user); | |
378 | ||
379 | if (ret == 0) { | |
8bbf4976 DH |
380 | ret = construct_key(key, callout_info, callout_len, aux, |
381 | dest_keyring); | |
76181c13 DH |
382 | if (ret < 0) |
383 | goto construction_failed; | |
384 | } | |
385 | ||
8bbf4976 | 386 | key_put(dest_keyring); |
76181c13 DH |
387 | return key; |
388 | ||
389 | construction_failed: | |
390 | key_negate_and_link(key, key_negative_timeout, NULL, NULL); | |
391 | key_put(key); | |
8bbf4976 | 392 | key_put(dest_keyring); |
76181c13 DH |
393 | return ERR_PTR(ret); |
394 | } | |
3e30148c | 395 | |
1da177e4 LT |
396 | /* |
397 | * request a key | |
398 | * - search the process's keyrings | |
399 | * - check the list of keys being created or updated | |
3e30148c DH |
400 | * - call out to userspace for a key if supplementary info was provided |
401 | * - cache the key in an appropriate keyring | |
1da177e4 | 402 | */ |
3e30148c DH |
403 | struct key *request_key_and_link(struct key_type *type, |
404 | const char *description, | |
4a38e122 DH |
405 | const void *callout_info, |
406 | size_t callout_len, | |
4e54f085 | 407 | void *aux, |
7e047ef5 DH |
408 | struct key *dest_keyring, |
409 | unsigned long flags) | |
1da177e4 | 410 | { |
1da177e4 | 411 | struct key *key; |
664cceb0 | 412 | key_ref_t key_ref; |
1da177e4 | 413 | |
4a38e122 DH |
414 | kenter("%s,%s,%p,%zu,%p,%p,%lx", |
415 | type->name, description, callout_info, callout_len, aux, | |
4e54f085 | 416 | dest_keyring, flags); |
3e30148c | 417 | |
1da177e4 | 418 | /* search all the process keyrings for a key */ |
664cceb0 DH |
419 | key_ref = search_process_keyrings(type, description, type->match, |
420 | current); | |
1da177e4 | 421 | |
664cceb0 DH |
422 | if (!IS_ERR(key_ref)) { |
423 | key = key_ref_to_ptr(key_ref); | |
76181c13 | 424 | } else if (PTR_ERR(key_ref) != -EAGAIN) { |
e231c2ee | 425 | key = ERR_CAST(key_ref); |
76181c13 | 426 | } else { |
1da177e4 LT |
427 | /* the search failed, but the keyrings were searchable, so we |
428 | * should consult userspace if we can */ | |
429 | key = ERR_PTR(-ENOKEY); | |
430 | if (!callout_info) | |
431 | goto error; | |
432 | ||
76181c13 | 433 | key = construct_key_and_link(type, description, callout_info, |
4a38e122 DH |
434 | callout_len, aux, dest_keyring, |
435 | flags); | |
1da177e4 LT |
436 | } |
437 | ||
3e30148c DH |
438 | error: |
439 | kleave(" = %p", key); | |
1da177e4 | 440 | return key; |
76181c13 | 441 | } |
1da177e4 | 442 | |
76181c13 DH |
443 | /* |
444 | * wait for construction of a key to complete | |
445 | */ | |
446 | int wait_for_key_construction(struct key *key, bool intr) | |
447 | { | |
448 | int ret; | |
3e30148c | 449 | |
76181c13 DH |
450 | ret = wait_on_bit(&key->flags, KEY_FLAG_USER_CONSTRUCT, |
451 | intr ? key_wait_bit_intr : key_wait_bit, | |
452 | intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE); | |
453 | if (ret < 0) | |
454 | return ret; | |
455 | return key_validate(key); | |
456 | } | |
457 | EXPORT_SYMBOL(wait_for_key_construction); | |
3e30148c | 458 | |
3e30148c DH |
459 | /* |
460 | * request a key | |
461 | * - search the process's keyrings | |
462 | * - check the list of keys being created or updated | |
463 | * - call out to userspace for a key if supplementary info was provided | |
76181c13 | 464 | * - waits uninterruptible for creation to complete |
3e30148c DH |
465 | */ |
466 | struct key *request_key(struct key_type *type, | |
467 | const char *description, | |
468 | const char *callout_info) | |
469 | { | |
76181c13 | 470 | struct key *key; |
4a38e122 | 471 | size_t callout_len = 0; |
76181c13 DH |
472 | int ret; |
473 | ||
4a38e122 DH |
474 | if (callout_info) |
475 | callout_len = strlen(callout_info); | |
476 | key = request_key_and_link(type, description, callout_info, callout_len, | |
477 | NULL, NULL, KEY_ALLOC_IN_QUOTA); | |
76181c13 DH |
478 | if (!IS_ERR(key)) { |
479 | ret = wait_for_key_construction(key, false); | |
480 | if (ret < 0) { | |
481 | key_put(key); | |
482 | return ERR_PTR(ret); | |
483 | } | |
484 | } | |
485 | return key; | |
486 | } | |
1da177e4 | 487 | EXPORT_SYMBOL(request_key); |
4e54f085 | 488 | |
4e54f085 DH |
489 | /* |
490 | * request a key with auxiliary data for the upcaller | |
491 | * - search the process's keyrings | |
492 | * - check the list of keys being created or updated | |
493 | * - call out to userspace for a key if supplementary info was provided | |
76181c13 | 494 | * - waits uninterruptible for creation to complete |
4e54f085 DH |
495 | */ |
496 | struct key *request_key_with_auxdata(struct key_type *type, | |
497 | const char *description, | |
4a38e122 DH |
498 | const void *callout_info, |
499 | size_t callout_len, | |
4e54f085 DH |
500 | void *aux) |
501 | { | |
76181c13 DH |
502 | struct key *key; |
503 | int ret; | |
504 | ||
4a38e122 DH |
505 | key = request_key_and_link(type, description, callout_info, callout_len, |
506 | aux, NULL, KEY_ALLOC_IN_QUOTA); | |
76181c13 DH |
507 | if (!IS_ERR(key)) { |
508 | ret = wait_for_key_construction(key, false); | |
509 | if (ret < 0) { | |
510 | key_put(key); | |
511 | return ERR_PTR(ret); | |
512 | } | |
513 | } | |
514 | return key; | |
515 | } | |
516 | EXPORT_SYMBOL(request_key_with_auxdata); | |
4e54f085 | 517 | |
76181c13 DH |
518 | /* |
519 | * request a key (allow async construction) | |
520 | * - search the process's keyrings | |
521 | * - check the list of keys being created or updated | |
522 | * - call out to userspace for a key if supplementary info was provided | |
523 | */ | |
524 | struct key *request_key_async(struct key_type *type, | |
525 | const char *description, | |
4a38e122 DH |
526 | const void *callout_info, |
527 | size_t callout_len) | |
76181c13 | 528 | { |
4a38e122 DH |
529 | return request_key_and_link(type, description, callout_info, |
530 | callout_len, NULL, NULL, | |
531 | KEY_ALLOC_IN_QUOTA); | |
76181c13 DH |
532 | } |
533 | EXPORT_SYMBOL(request_key_async); | |
4e54f085 | 534 | |
76181c13 DH |
535 | /* |
536 | * request a key with auxiliary data for the upcaller (allow async construction) | |
537 | * - search the process's keyrings | |
538 | * - check the list of keys being created or updated | |
539 | * - call out to userspace for a key if supplementary info was provided | |
540 | */ | |
541 | struct key *request_key_async_with_auxdata(struct key_type *type, | |
542 | const char *description, | |
4a38e122 DH |
543 | const void *callout_info, |
544 | size_t callout_len, | |
76181c13 DH |
545 | void *aux) |
546 | { | |
4a38e122 DH |
547 | return request_key_and_link(type, description, callout_info, |
548 | callout_len, aux, NULL, KEY_ALLOC_IN_QUOTA); | |
76181c13 DH |
549 | } |
550 | EXPORT_SYMBOL(request_key_async_with_auxdata); |