41 static struct cred machine_cred = {
49 const struct cred *rpc_machine_cred(void)  in rpc_machine_cred()
261 rpcauth_unhash_cred_locked(struct rpc_cred *cred)  in rpcauth_unhash_cred_locked()  argument
263 	if (!test_and_clear_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags))  in rpcauth_unhash_cred_locked()
265 	hlist_del_rcu(&cred->cr_hash);  in rpcauth_unhash_cred_locked()
270 rpcauth_unhash_cred(struct rpc_cred *cred)  in rpcauth_unhash_cred()  argument
275 	if (!test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags))  in rpcauth_unhash_cred()
277 	cache_lock = &cred->cr_auth->au_credcache->lock;  in rpcauth_unhash_cred()
279 	ret = rpcauth_unhash_cred_locked(cred);  in rpcauth_unhash_cred()
312 rpcauth_stringify_acceptor(struct rpc_cred *cred)  in rpcauth_stringify_acceptor()  argument
314 	if (!cred->cr_ops->crstringify_acceptor)  in rpcauth_stringify_acceptor()
316 	return cred->cr_ops->crstringify_acceptor(cred);  in rpcauth_stringify_acceptor()
326 	struct rpc_cred *cred;  in rpcauth_destroy_credlist()  local
329 		cred = list_entry(head->next, struct rpc_cred, cr_lru);  in rpcauth_destroy_credlist()
330 		list_del_init(&cred->cr_lru);  in rpcauth_destroy_credlist()
331 		put_rpccred(cred);  in rpcauth_destroy_credlist()
336 rpcauth_lru_add_locked(struct rpc_cred *cred)  in rpcauth_lru_add_locked()  argument
338 	if (!list_empty(&cred->cr_lru))  in rpcauth_lru_add_locked()
341 	list_add_tail(&cred->cr_lru, &cred_unused);  in rpcauth_lru_add_locked()
345 rpcauth_lru_add(struct rpc_cred *cred)  in rpcauth_lru_add()  argument
347 	if (!list_empty(&cred->cr_lru))  in rpcauth_lru_add()
350 	rpcauth_lru_add_locked(cred);  in rpcauth_lru_add()
355 rpcauth_lru_remove_locked(struct rpc_cred *cred)  in rpcauth_lru_remove_locked()  argument
357 	if (list_empty(&cred->cr_lru))  in rpcauth_lru_remove_locked()
360 	list_del_init(&cred->cr_lru);  in rpcauth_lru_remove_locked()
364 rpcauth_lru_remove(struct rpc_cred *cred)  in rpcauth_lru_remove()  argument
366 	if (list_empty(&cred->cr_lru))  in rpcauth_lru_remove()
369 	rpcauth_lru_remove_locked(cred);  in rpcauth_lru_remove()
382 	struct rpc_cred	*cred;  in rpcauth_clear_credcache()  local
391 			cred = hlist_entry(head->first, struct rpc_cred, cr_hash);  in rpcauth_clear_credcache()
392 			rpcauth_unhash_cred_locked(cred);  in rpcauth_clear_credcache()
394 			rpcauth_lru_remove_locked(cred);  in rpcauth_clear_credcache()
395 			list_add_tail(&cred->cr_lru, &free);  in rpcauth_clear_credcache()
429 	struct rpc_cred *cred, *next;  in rpcauth_prune_expired()  local
433 	list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) {  in rpcauth_prune_expired()
437 		if (refcount_read(&cred->cr_count) > 1) {  in rpcauth_prune_expired()
438 			rpcauth_lru_remove_locked(cred);  in rpcauth_prune_expired()
445 		if (time_in_range(cred->cr_expire, expired, jiffies))  in rpcauth_prune_expired()
447 		if (!rpcauth_unhash_cred(cred))  in rpcauth_prune_expired()
450 		rpcauth_lru_remove_locked(cred);  in rpcauth_prune_expired()
452 		list_add_tail(&cred->cr_lru, free);  in rpcauth_prune_expired()
519 	struct rpc_cred	*cred = NULL,  in rpcauth_lookup_credcache()  local
529 		cred = get_rpccred(entry);  in rpcauth_lookup_credcache()
530 		if (cred)  in rpcauth_lookup_credcache()
535 	if (cred != NULL)  in rpcauth_lookup_credcache()
540 		cred = new;  in rpcauth_lookup_credcache()
548 		cred = get_rpccred(entry);  in rpcauth_lookup_credcache()
549 		if (cred)  in rpcauth_lookup_credcache()
552 	if (cred == NULL) {  in rpcauth_lookup_credcache()
553 		cred = new;  in rpcauth_lookup_credcache()
554 		set_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags);  in rpcauth_lookup_credcache()
555 		refcount_inc(&cred->cr_count);  in rpcauth_lookup_credcache()
556 		hlist_add_head_rcu(&cred->cr_hash, &cache->hashtable[nr]);  in rpcauth_lookup_credcache()
562 	if (test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags) &&  in rpcauth_lookup_credcache()
563 	    cred->cr_ops->cr_init != NULL &&  in rpcauth_lookup_credcache()
565 		int res = cred->cr_ops->cr_init(auth, cred);  in rpcauth_lookup_credcache()
567 			put_rpccred(cred);  in rpcauth_lookup_credcache()
568 			cred = ERR_PTR(res);  in rpcauth_lookup_credcache()
573 	return cred;  in rpcauth_lookup_credcache()
582 	const struct cred *cred = current_cred();  in rpcauth_lookupcred()  local
585 	acred.cred = cred;  in rpcauth_lookupcred()
592 rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,  in rpcauth_init_cred()  argument
595 	INIT_HLIST_NODE(&cred->cr_hash);  in rpcauth_init_cred()
596 	INIT_LIST_HEAD(&cred->cr_lru);  in rpcauth_init_cred()
597 	refcount_set(&cred->cr_count, 1);  in rpcauth_init_cred()
598 	cred->cr_auth = auth;  in rpcauth_init_cred()
599 	cred->cr_flags = 0;  in rpcauth_init_cred()
600 	cred->cr_ops = ops;  in rpcauth_init_cred()
601 	cred->cr_expire = jiffies;  in rpcauth_init_cred()
602 	cred->cr_cred = get_cred(acred->cred);  in rpcauth_init_cred()
611 		.cred = get_task_cred(&init_task),  in rpcauth_bind_root_cred()
618 	put_cred(acred.cred);  in rpcauth_bind_root_cred()
628 		.cred = init_task.cred,  in rpcauth_bind_machine_cred()
647 rpcauth_bindcred(struct rpc_task *task, const struct cred *cred, int flags)  in rpcauth_bindcred()  argument
654 		.cred = cred,  in rpcauth_bindcred()
662 	else if (cred != NULL && cred != &machine_cred)  in rpcauth_bindcred()
664 	else if (cred == &machine_cred)  in rpcauth_bindcred()
670 	else if (cred == &machine_cred)  in rpcauth_bindcred()
684 put_rpccred(struct rpc_cred *cred)  in put_rpccred()  argument
686 	if (cred == NULL)  in put_rpccred()
689 	if (refcount_dec_and_test(&cred->cr_count))  in put_rpccred()
691 	if (refcount_read(&cred->cr_count) != 1 ||  in put_rpccred()
692 	    !test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags))  in put_rpccred()
694 	if (test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0) {  in put_rpccred()
695 		cred->cr_expire = jiffies;  in put_rpccred()
696 		rpcauth_lru_add(cred);  in put_rpccred()
698 		if (unlikely(!test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags)))  in put_rpccred()
699 			rpcauth_lru_remove(cred);  in put_rpccred()
700 	} else if (rpcauth_unhash_cred(cred)) {  in put_rpccred()
701 		rpcauth_lru_remove(cred);  in put_rpccred()
702 		if (refcount_dec_and_test(&cred->cr_count))  in put_rpccred()
710 	cred->cr_ops->crdestroy(cred);  in put_rpccred()
820 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;  in rpcauth_xmit_need_reencode()  local
822 	if (!cred || !cred->cr_ops->crneed_reencode)  in rpcauth_xmit_need_reencode()
824 	return cred->cr_ops->crneed_reencode(task);  in rpcauth_xmit_need_reencode()
830 	struct rpc_cred	*cred;  in rpcauth_refreshcred()  local
833 	cred = task->tk_rqstp->rq_cred;  in rpcauth_refreshcred()
834 	if (cred == NULL) {  in rpcauth_refreshcred()
838 		cred = task->tk_rqstp->rq_cred;  in rpcauth_refreshcred()
841 	err = cred->cr_ops->crrefresh(task);  in rpcauth_refreshcred()
851 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;  in rpcauth_invalcred()  local
853 	if (cred)  in rpcauth_invalcred()
854 		clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags);  in rpcauth_invalcred()
860 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;  in rpcauth_uptodatecred()  local
862 	return cred == NULL ||  in rpcauth_uptodatecred()
863 		test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0;  in rpcauth_uptodatecred()