getname.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 68 行

head	1.1;
access;
symbols;
locks
	dls:1.1; strict;
comment	@ * @;


1.1
date	97.09.21.19.27.59;	author dls;	state Dist;
branches;
next	;


desc
@@


1.1
log
@pre-3e code
@
text
@/* getname.c - getname, getiname */

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

/*------------------------------------------------------------------------
 *  getname  -  get name of this host and place it where specified
 *------------------------------------------------------------------------
 */
SYSCALL getname(nam)
char	*nam;
{
	return getiname(NI_PRIMARY, nam);
}

/*------------------------------------------------------------------------
 *  getiname  -  get name of this host and place it where specified
 *------------------------------------------------------------------------
 */
int getiname(inum, nam)
int	inum;
char	*nam;
{
	struct	netif *intf;
	IPaddr	myaddr;
	char	*p;

	if (inum < 0 || inum >= Net.nif)
		return SYSERR;
	intf = &nif[inum];
	*nam = NULLCH;
	if (!intf->ni_nvalid) {
		myaddr = getiaddr(inum);
		if (ip2name(myaddr, intf->ni_name) == SYSERR)
			return SYSERR;
		intf->ni_nvalid = TRUE;
	}
	for (p=intf->ni_name ; p && *p != NULLCH; )
		*nam++ = *p++;
	*nam = NULLCH;
	return OK;
}
@