41 static struct cred machine_cred = {
52 const struct cred *rpc_machine_cred(void)  in rpc_machine_cred()
313 rpcauth_unhash_cred_locked(struct rpc_cred *cred)  in rpcauth_unhash_cred_locked()  argument
315 	if (!test_and_clear_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags))  in rpcauth_unhash_cred_locked()
317 	hlist_del_rcu(&cred->cr_hash);  in rpcauth_unhash_cred_locked()
322 rpcauth_unhash_cred(struct rpc_cred *cred)  in rpcauth_unhash_cred()  argument
327 	if (!test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags))  in rpcauth_unhash_cred()
329 	cache_lock = &cred->cr_auth->au_credcache->lock;  in rpcauth_unhash_cred()
331 	ret = rpcauth_unhash_cred_locked(cred);  in rpcauth_unhash_cred()
364 rpcauth_stringify_acceptor(struct rpc_cred *cred)  in rpcauth_stringify_acceptor()  argument
366 	if (!cred->cr_ops->crstringify_acceptor)  in rpcauth_stringify_acceptor()
368 	return cred->cr_ops->crstringify_acceptor(cred);  in rpcauth_stringify_acceptor()
378 	struct rpc_cred *cred;  in rpcauth_destroy_credlist()  local
381 		cred = list_entry(head->next, struct rpc_cred, cr_lru);  in rpcauth_destroy_credlist()
382 		list_del_init(&cred->cr_lru);  in rpcauth_destroy_credlist()
383 		put_rpccred(cred);  in rpcauth_destroy_credlist()
388 rpcauth_lru_add_locked(struct rpc_cred *cred)  in rpcauth_lru_add_locked()  argument
390 	if (!list_empty(&cred->cr_lru))  in rpcauth_lru_add_locked()
393 	list_add_tail(&cred->cr_lru, &cred_unused);  in rpcauth_lru_add_locked()
397 rpcauth_lru_add(struct rpc_cred *cred)  in rpcauth_lru_add()  argument
399 	if (!list_empty(&cred->cr_lru))  in rpcauth_lru_add()
402 	rpcauth_lru_add_locked(cred);  in rpcauth_lru_add()
407 rpcauth_lru_remove_locked(struct rpc_cred *cred)  in rpcauth_lru_remove_locked()  argument
409 	if (list_empty(&cred->cr_lru))  in rpcauth_lru_remove_locked()
412 	list_del_init(&cred->cr_lru);  in rpcauth_lru_remove_locked()
416 rpcauth_lru_remove(struct rpc_cred *cred)  in rpcauth_lru_remove()  argument
418 	if (list_empty(&cred->cr_lru))  in rpcauth_lru_remove()
421 	rpcauth_lru_remove_locked(cred);  in rpcauth_lru_remove()
434 	struct rpc_cred	*cred;  in rpcauth_clear_credcache()  local
443 			cred = hlist_entry(head->first, struct rpc_cred, cr_hash);  in rpcauth_clear_credcache()
444 			rpcauth_unhash_cred_locked(cred);  in rpcauth_clear_credcache()
446 			rpcauth_lru_remove_locked(cred);  in rpcauth_clear_credcache()
447 			list_add_tail(&cred->cr_lru, &free);  in rpcauth_clear_credcache()
481 	struct rpc_cred *cred, *next;  in rpcauth_prune_expired()  local
485 	list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) {  in rpcauth_prune_expired()
489 		if (refcount_read(&cred->cr_count) > 1) {  in rpcauth_prune_expired()
490 			rpcauth_lru_remove_locked(cred);  in rpcauth_prune_expired()
497 		if (!time_in_range(cred->cr_expire, expired, jiffies))  in rpcauth_prune_expired()
499 		if (!rpcauth_unhash_cred(cred))  in rpcauth_prune_expired()
502 		rpcauth_lru_remove_locked(cred);  in rpcauth_prune_expired()
504 		list_add_tail(&cred->cr_lru, free);  in rpcauth_prune_expired()
571 	struct rpc_cred	*cred = NULL,  in rpcauth_lookup_credcache()  local
581 		cred = get_rpccred(entry);  in rpcauth_lookup_credcache()
582 		if (cred)  in rpcauth_lookup_credcache()
587 	if (cred != NULL)  in rpcauth_lookup_credcache()
592 		cred = new;  in rpcauth_lookup_credcache()
600 		cred = get_rpccred(entry);  in rpcauth_lookup_credcache()
601 		if (cred)  in rpcauth_lookup_credcache()
604 	if (cred == NULL) {  in rpcauth_lookup_credcache()
605 		cred = new;  in rpcauth_lookup_credcache()
606 		set_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags);  in rpcauth_lookup_credcache()
607 		refcount_inc(&cred->cr_count);  in rpcauth_lookup_credcache()
608 		hlist_add_head_rcu(&cred->cr_hash, &cache->hashtable[nr]);  in rpcauth_lookup_credcache()
614 	if (test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags) &&  in rpcauth_lookup_credcache()
615 	    cred->cr_ops->cr_init != NULL &&  in rpcauth_lookup_credcache()
617 		int res = cred->cr_ops->cr_init(auth, cred);  in rpcauth_lookup_credcache()
619 			put_rpccred(cred);  in rpcauth_lookup_credcache()
620 			cred = ERR_PTR(res);  in rpcauth_lookup_credcache()
625 	return cred;  in rpcauth_lookup_credcache()
634 	const struct cred *cred = current_cred();  in rpcauth_lookupcred()  local
637 	acred.cred = cred;  in rpcauth_lookupcred()
644 rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,  in rpcauth_init_cred()  argument
647 	INIT_HLIST_NODE(&cred->cr_hash);  in rpcauth_init_cred()
648 	INIT_LIST_HEAD(&cred->cr_lru);  in rpcauth_init_cred()
649 	refcount_set(&cred->cr_count, 1);  in rpcauth_init_cred()
650 	cred->cr_auth = auth;  in rpcauth_init_cred()
651 	cred->cr_flags = 0;  in rpcauth_init_cred()
652 	cred->cr_ops = ops;  in rpcauth_init_cred()
653 	cred->cr_expire = jiffies;  in rpcauth_init_cred()
654 	cred->cr_cred = get_cred(acred->cred);  in rpcauth_init_cred()
663 		.cred = get_task_cred(&init_task),  in rpcauth_bind_root_cred()
668 	put_cred(acred.cred);  in rpcauth_bind_root_cred()
678 		.cred = init_task.cred,  in rpcauth_bind_machine_cred()
695 rpcauth_bindcred(struct rpc_task *task, const struct cred *cred, int flags)  in rpcauth_bindcred()  argument
702 		.cred = cred,  in rpcauth_bindcred()
710 	else if (cred != NULL && cred != &machine_cred)  in rpcauth_bindcred()
712 	else if (cred == &machine_cred)  in rpcauth_bindcred()
718 	else if (cred == &machine_cred || (flags & RPC_TASK_ROOTCREDS))  in rpcauth_bindcred()
732 put_rpccred(struct rpc_cred *cred)  in put_rpccred()  argument
734 	if (cred == NULL)  in put_rpccred()
737 	if (refcount_dec_and_test(&cred->cr_count))  in put_rpccred()
739 	if (refcount_read(&cred->cr_count) != 1 ||  in put_rpccred()
740 	    !test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags))  in put_rpccred()
742 	if (test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0) {  in put_rpccred()
743 		cred->cr_expire = jiffies;  in put_rpccred()
744 		rpcauth_lru_add(cred);  in put_rpccred()
746 		if (unlikely(!test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags)))  in put_rpccred()
747 			rpcauth_lru_remove(cred);  in put_rpccred()
748 	} else if (rpcauth_unhash_cred(cred)) {  in put_rpccred()
749 		rpcauth_lru_remove(cred);  in put_rpccred()
750 		if (refcount_dec_and_test(&cred->cr_count))  in put_rpccred()
758 	cred->cr_ops->crdestroy(cred);  in put_rpccred()
863 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;  in rpcauth_xmit_need_reencode()  local
865 	if (!cred || !cred->cr_ops->crneed_reencode)  in rpcauth_xmit_need_reencode()
867 	return cred->cr_ops->crneed_reencode(task);  in rpcauth_xmit_need_reencode()
873 	struct rpc_cred	*cred;  in rpcauth_refreshcred()  local
876 	cred = task->tk_rqstp->rq_cred;  in rpcauth_refreshcred()
877 	if (cred == NULL) {  in rpcauth_refreshcred()
881 		cred = task->tk_rqstp->rq_cred;  in rpcauth_refreshcred()
884 	err = cred->cr_ops->crrefresh(task);  in rpcauth_refreshcred()
894 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;  in rpcauth_invalcred()  local
896 	if (cred)  in rpcauth_invalcred()
897 		clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags);  in rpcauth_invalcred()
903 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;  in rpcauth_uptodatecred()  local
905 	return cred == NULL ||  in rpcauth_uptodatecred()
906 		test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0;  in rpcauth_uptodatecred()