Lines Matching refs:key
38 void __key_check(const struct key *key) in __key_check() argument
41 key, key->magic, KEY_DEBUG_MAGIC); in __key_check()
133 static inline void key_alloc_serial(struct key *key) in key_alloc_serial() argument
136 struct key *xkey; in key_alloc_serial()
141 get_random_bytes(&key->serial, sizeof(key->serial)); in key_alloc_serial()
143 key->serial >>= 1; /* negative numbers are not permitted */ in key_alloc_serial()
144 } while (key->serial < 3); in key_alloc_serial()
154 xkey = rb_entry(parent, struct key, serial_node); in key_alloc_serial()
156 if (key->serial < xkey->serial) in key_alloc_serial()
158 else if (key->serial > xkey->serial) in key_alloc_serial()
165 rb_link_node(&key->serial_node, parent, p); in key_alloc_serial()
166 rb_insert_color(&key->serial_node, &key_serial_tree); in key_alloc_serial()
175 key->serial++; in key_alloc_serial()
176 if (key->serial < 3) { in key_alloc_serial()
177 key->serial = 3; in key_alloc_serial()
185 xkey = rb_entry(parent, struct key, serial_node); in key_alloc_serial()
186 if (key->serial < xkey->serial) in key_alloc_serial()
224 struct key *key_alloc(struct key_type *type, const char *desc, in key_alloc()
230 struct key *key; in key_alloc() local
235 key = ERR_PTR(-EINVAL); in key_alloc()
242 key = ERR_PTR(ret); in key_alloc()
277 key = kmem_cache_zalloc(key_jar, GFP_KERNEL); in key_alloc()
278 if (!key) in key_alloc()
281 key->index_key.desc_len = desclen; in key_alloc()
282 key->index_key.description = kmemdup(desc, desclen + 1, GFP_KERNEL); in key_alloc()
283 if (!key->index_key.description) in key_alloc()
285 key->index_key.type = type; in key_alloc()
286 key_set_index_key(&key->index_key); in key_alloc()
288 refcount_set(&key->usage, 1); in key_alloc()
289 init_rwsem(&key->sem); in key_alloc()
290 lockdep_set_class(&key->sem, &type->lock_class); in key_alloc()
291 key->user = user; in key_alloc()
292 key->quotalen = quotalen; in key_alloc()
293 key->datalen = type->def_datalen; in key_alloc()
294 key->uid = uid; in key_alloc()
295 key->gid = gid; in key_alloc()
296 key->perm = perm; in key_alloc()
297 key->expiry = TIME64_MAX; in key_alloc()
298 key->restrict_link = restrict_link; in key_alloc()
299 key->last_used_at = ktime_get_real_seconds(); in key_alloc()
301 key->flags |= 1 << KEY_FLAG_USER_ALIVE; in key_alloc()
303 key->flags |= 1 << KEY_FLAG_IN_QUOTA; in key_alloc()
305 key->flags |= 1 << KEY_FLAG_BUILTIN; in key_alloc()
307 key->flags |= 1 << KEY_FLAG_UID_KEYRING; in key_alloc()
309 key->flags |= 1 << KEY_FLAG_KEEP; in key_alloc()
312 key->magic = KEY_DEBUG_MAGIC; in key_alloc()
316 ret = security_key_alloc(key, cred, flags); in key_alloc()
321 refcount_inc(&key->domain_tag->usage); in key_alloc()
323 key_alloc_serial(key); in key_alloc()
326 return key; in key_alloc()
329 kfree(key->description); in key_alloc()
330 kmem_cache_free(key_jar, key); in key_alloc()
338 key = ERR_PTR(ret); in key_alloc()
342 kmem_cache_free(key_jar, key); in key_alloc()
352 key = ERR_PTR(-ENOMEM); in key_alloc()
358 key = ERR_PTR(-EDQUOT); in key_alloc()
374 int key_payload_reserve(struct key *key, size_t datalen) in key_payload_reserve() argument
376 int delta = (int)datalen - key->datalen; in key_payload_reserve()
379 key_check(key); in key_payload_reserve()
382 if (delta != 0 && test_bit(KEY_FLAG_IN_QUOTA, &key->flags)) { in key_payload_reserve()
383 unsigned maxbytes = uid_eq(key->user->uid, GLOBAL_ROOT_UID) ? in key_payload_reserve()
387 spin_lock_irqsave(&key->user->lock, flags); in key_payload_reserve()
390 (key->user->qnbytes + delta > maxbytes || in key_payload_reserve()
391 key->user->qnbytes + delta < key->user->qnbytes)) { in key_payload_reserve()
395 key->user->qnbytes += delta; in key_payload_reserve()
396 key->quotalen += delta; in key_payload_reserve()
398 spin_unlock_irqrestore(&key->user->lock, flags); in key_payload_reserve()
403 key->datalen = datalen; in key_payload_reserve()
412 static void mark_key_instantiated(struct key *key, int reject_error) in mark_key_instantiated() argument
417 smp_store_release(&key->state, in mark_key_instantiated()
427 static int __key_instantiate_and_link(struct key *key, in __key_instantiate_and_link() argument
429 struct key *keyring, in __key_instantiate_and_link()
430 struct key *authkey, in __key_instantiate_and_link()
435 key_check(key); in __key_instantiate_and_link()
444 if (key->state == KEY_IS_UNINSTANTIATED) { in __key_instantiate_and_link()
446 ret = key->type->instantiate(key, prep); in __key_instantiate_and_link()
450 atomic_inc(&key->user->nikeys); in __key_instantiate_and_link()
451 mark_key_instantiated(key, 0); in __key_instantiate_and_link()
452 notify_key(key, NOTIFY_KEY_INSTANTIATED, 0); in __key_instantiate_and_link()
454 if (test_and_clear_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags)) in __key_instantiate_and_link()
460 set_bit(KEY_FLAG_KEEP, &key->flags); in __key_instantiate_and_link()
462 __key_link(keyring, key, _edit); in __key_instantiate_and_link()
470 key_set_expiry(key, prep->expiry); in __key_instantiate_and_link()
478 wake_up_bit(&key->flags, KEY_FLAG_USER_CONSTRUCT); in __key_instantiate_and_link()
499 int key_instantiate_and_link(struct key *key, in key_instantiate_and_link() argument
502 struct key *keyring, in key_instantiate_and_link()
503 struct key *authkey) in key_instantiate_and_link()
510 prep.orig_description = key->description; in key_instantiate_and_link()
513 prep.quotalen = key->type->def_datalen; in key_instantiate_and_link()
515 if (key->type->preparse) { in key_instantiate_and_link()
516 ret = key->type->preparse(&prep); in key_instantiate_and_link()
522 ret = __key_link_lock(keyring, &key->index_key); in key_instantiate_and_link()
526 ret = __key_link_begin(keyring, &key->index_key, &edit); in key_instantiate_and_link()
533 ret = keyres->check(keyring, key->type, &prep.payload, in key_instantiate_and_link()
534 keyres->key); in key_instantiate_and_link()
540 ret = __key_instantiate_and_link(key, &prep, keyring, authkey, &edit); in key_instantiate_and_link()
544 __key_link_end(keyring, &key->index_key, edit); in key_instantiate_and_link()
547 if (key->type->preparse) in key_instantiate_and_link()
548 key->type->free_preparse(&prep); in key_instantiate_and_link()
575 int key_reject_and_link(struct key *key, in key_reject_and_link() argument
578 struct key *keyring, in key_reject_and_link()
579 struct key *authkey) in key_reject_and_link()
584 key_check(key); in key_reject_and_link()
594 link_ret = __key_link_lock(keyring, &key->index_key); in key_reject_and_link()
596 link_ret = __key_link_begin(keyring, &key->index_key, &edit); in key_reject_and_link()
598 __key_link_end(keyring, &key->index_key, edit); in key_reject_and_link()
605 if (key->state == KEY_IS_UNINSTANTIATED) { in key_reject_and_link()
607 atomic_inc(&key->user->nikeys); in key_reject_and_link()
608 mark_key_instantiated(key, -error); in key_reject_and_link()
609 notify_key(key, NOTIFY_KEY_INSTANTIATED, -error); in key_reject_and_link()
610 key_set_expiry(key, ktime_get_real_seconds() + timeout); in key_reject_and_link()
612 if (test_and_clear_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags)) in key_reject_and_link()
619 __key_link(keyring, key, &edit); in key_reject_and_link()
629 __key_link_end(keyring, &key->index_key, edit); in key_reject_and_link()
633 wake_up_bit(&key->flags, KEY_FLAG_USER_CONSTRUCT); in key_reject_and_link()
647 void key_put(struct key *key) in key_put() argument
649 if (key) { in key_put()
650 key_check(key); in key_put()
652 if (refcount_dec_and_test(&key->usage)) { in key_put()
656 if (test_bit(KEY_FLAG_IN_QUOTA, &key->flags)) { in key_put()
657 spin_lock_irqsave(&key->user->lock, flags); in key_put()
658 key->user->qnkeys--; in key_put()
659 key->user->qnbytes -= key->quotalen; in key_put()
660 spin_unlock_irqrestore(&key->user->lock, flags); in key_put()
663 clear_bit_unlock(KEY_FLAG_USER_ALIVE, &key->flags); in key_put()
673 struct key *key_lookup(key_serial_t id) in key_lookup()
676 struct key *key; in key_lookup() local
683 key = rb_entry(n, struct key, serial_node); in key_lookup()
685 if (id < key->serial) in key_lookup()
687 else if (id > key->serial) in key_lookup()
694 key = ERR_PTR(-ENOKEY); in key_lookup()
701 if (!refcount_inc_not_zero(&key->usage)) in key_lookup()
706 return key; in key_lookup()
736 void key_set_timeout(struct key *key, unsigned timeout) in key_set_timeout() argument
741 down_write(&key->sem); in key_set_timeout()
745 key_set_expiry(key, expiry); in key_set_timeout()
747 up_write(&key->sem); in key_set_timeout()
768 struct key *key = key_ref_to_ptr(key_ref); in __key_update() local
777 if (!key->type->update) in __key_update()
780 down_write(&key->sem); in __key_update()
782 ret = key->type->update(key, prep); in __key_update()
785 mark_key_instantiated(key, 0); in __key_update()
786 notify_key(key, NOTIFY_KEY_UPDATED, 0); in __key_update()
789 up_write(&key->sem); in __key_update()
797 key_put(key); in __key_update()
821 struct key *keyring, *key = NULL; in __key_create_or_update() local
885 &prep.payload, restrict_link->key); in __key_create_or_update()
933 key = key_alloc(index_key.type, index_key.description, in __key_create_or_update()
935 if (IS_ERR(key)) { in __key_create_or_update()
936 key_ref = ERR_CAST(key); in __key_create_or_update()
941 ret = __key_instantiate_and_link(key, &prep, keyring, NULL, &edit); in __key_create_or_update()
943 key_put(key); in __key_create_or_update()
948 security_key_post_create_or_update(keyring, key, payload, plen, flags, in __key_create_or_update()
951 key_ref = make_key_ref(key, is_key_possessed(keyring_ref)); in __key_create_or_update()
969 key = key_ref_to_ptr(key_ref); in __key_create_or_update()
970 if (test_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags)) { in __key_create_or_update()
971 ret = wait_for_key_construction(key, true); in __key_create_or_update()
982 security_key_post_create_or_update(keyring, key, payload, plen, in __key_create_or_update()
1079 struct key *key = key_ref_to_ptr(key_ref); in key_update() local
1082 key_check(key); in key_update()
1090 if (!key->type->update) in key_update()
1096 prep.quotalen = key->type->def_datalen; in key_update()
1098 if (key->type->preparse) { in key_update()
1099 ret = key->type->preparse(&prep); in key_update()
1104 down_write(&key->sem); in key_update()
1106 ret = key->type->update(key, &prep); in key_update()
1109 mark_key_instantiated(key, 0); in key_update()
1110 notify_key(key, NOTIFY_KEY_UPDATED, 0); in key_update()
1113 up_write(&key->sem); in key_update()
1116 if (key->type->preparse) in key_update()
1117 key->type->free_preparse(&prep); in key_update()
1131 void key_revoke(struct key *key) in key_revoke() argument
1135 key_check(key); in key_revoke()
1142 down_write_nested(&key->sem, 1); in key_revoke()
1143 if (!test_and_set_bit(KEY_FLAG_REVOKED, &key->flags)) { in key_revoke()
1144 notify_key(key, NOTIFY_KEY_REVOKED, 0); in key_revoke()
1145 if (key->type->revoke) in key_revoke()
1146 key->type->revoke(key); in key_revoke()
1150 if (key->revoked_at == 0 || key->revoked_at > time) { in key_revoke()
1151 key->revoked_at = time; in key_revoke()
1152 key_schedule_gc(key->revoked_at + key_gc_delay); in key_revoke()
1156 up_write(&key->sem); in key_revoke()
1167 void key_invalidate(struct key *key) in key_invalidate() argument
1169 kenter("%d", key_serial(key)); in key_invalidate()
1171 key_check(key); in key_invalidate()
1173 if (!test_bit(KEY_FLAG_INVALIDATED, &key->flags)) { in key_invalidate()
1174 down_write_nested(&key->sem, 1); in key_invalidate()
1175 if (!test_and_set_bit(KEY_FLAG_INVALIDATED, &key->flags)) { in key_invalidate()
1176 notify_key(key, NOTIFY_KEY_INVALIDATED, 0); in key_invalidate()
1179 up_write(&key->sem); in key_invalidate()
1194 int generic_key_instantiate(struct key *key, struct key_preparsed_payload *prep) in generic_key_instantiate() argument
1200 ret = key_payload_reserve(key, prep->quotalen); in generic_key_instantiate()
1202 rcu_assign_keypointer(key, prep->payload.data[0]); in generic_key_instantiate()
1203 key->payload.data[1] = prep->payload.data[1]; in generic_key_instantiate()
1204 key->payload.data[2] = prep->payload.data[2]; in generic_key_instantiate()
1205 key->payload.data[3] = prep->payload.data[3]; in generic_key_instantiate()
1277 key_jar = kmem_cache_create("key_jar", sizeof(struct key), in key_init()