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Bob Halley 1999-07-24 01:15:18 +00:00
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commit 0fac6cee7b
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bin/named/interfacemgr.h
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/*
* Copyright (C) 1999 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#ifndef NS_INTERFACEMGR_H
#define NS_INTERFACEMGR_H 1
/*****
***** Module Info
*****/
/*
* Interface manager
*
* The interface manager monitors the operating system's list
* of network interfaces, creating and destroying listeners
* as needed.
*
* Reliability:
* No impact expected.
*
* Resources:
*
* Security:
* The server will only be able to bind to the DNS port on
* newly discovered interfaces if it is running as root.
*
* Standards:
* The API for scanning varies greatly among operating systems.
* This module attempts to hide the differences.
*/
/***
*** Imports
***/
#include <isc/result.h>
#include <isc/mem.h>
#include <dns/result.h>
/***
*** Types
***/
/* XXX this declaration should be somewhere else, where? */
typedef dns_result_t
ns_dispatch_func(isc_mem_t *, isc_region_t *, unsigned int);
typedef struct ns_interfacemgr ns_interfacemgr_t;
/***
*** Functions
***/
dns_result_t
ns_interfacemgr_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
isc_socketmgr_t *socketmgr,
ns_dispatch_func *dispatch,
ns_interfacemgr_t **mgrp);
dns_result_t
ns_interfacemgr_scan(ns_interfacemgr_t *mgr);
/*
* Scan the operatings system's list of network interfaces
* and create listeners when new interfaces are discovered.
* Shut down the sockets for interfaces that go away.
*
* XXX should honor the listen-on directive in named.conf.
*
* This should be called once on server startup and then
* periodically according to the 'interface-interval' option
* in named.conf.
*/
void
ns_interfacemgr_destroy(ns_interfacemgr_t **mgrp);
/*
* Destroy the interface manager.
*/
#endif /* NS_INTERFACEMGR_H */