/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <bio.h>#include <ndb.h>#include <ip.h> /* return list of ip addresses for a name */Ndbtuple*ndbgetipaddr(Ndb *db, char *val){	char *attr, *p;	Ndbtuple *it, *first, *last, *next;	Ndbs s; 	/* already an IP address? */	attr = ipattr(val);	if(strcmp(attr, "ip") == 0){		it = ndbnew("ip", val);		ndbsetmalloctag(it, getcallerpc(&db));		return it;	} 	/* look it up */	p = ndbgetvalue(db, &s, attr, val, "ip", &it);	if(p == nil)		return nil;	free(p); 	/* remove the non-ip entries */	first = last = nil;	for(; it; it = next){		next = it->entry;		if(strcmp(it->attr, "ip") == 0){			if(first == nil)				first = it;			else				last->entry = it;			it->entry = nil;			it->line = first;			last = it;		} else {			it->entry = nil;			ndbfree(it);		}	} 	ndbsetmalloctag(first, getcallerpc(&db));	return first;}