getnetbyad.c

来自「Axis 221 camera embedded programing inte」· C语言 代码 · 共 36 行

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#define __FORCE_GLIBC
#include <features.h>
#include <netdb.h>

extern int _net_stayopen;

struct netent *getnetbyaddr (uint32_t net, int type)
{
	register struct netent *p;

	setnetent(_net_stayopen);
	while ((p = getnetent()))
		if (p->n_addrtype == type && p->n_net == net)
			break;
	if (!_net_stayopen)
		endnetent();
	return (p);
}