getnet.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 58 行

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date	97.09.21.19.27.59;	author dls;	state Dist;
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@/* getnet.c - getnet, getinet */

#include <conf.h>
#include <kernel.h>
#include <network.h>

/*------------------------------------------------------------------------
 *  getnet  -  obtain the network portion of this system's IP address
 *------------------------------------------------------------------------
 */
IPaddr
getnet()
{
	return getiaddr(NI_PRIMARY);
}

/*------------------------------------------------------------------------
 *  getinet  -  obtain the network portion of this interface's IP address
 *------------------------------------------------------------------------
 */
IPaddr
getinet(inum)
int	inum;
{
	struct netif	*pif;

	if (inum < 0 || inum >= Net.nif)
		return SYSERR;
	pif = &nif[inum];
	if (!pif->ni_ivalid && getiaddr(inum) == SYSERR)
		return SYSERR;
	return pif->ni_net;
}
@