/* 2011 JGL (yiyus) */#include <lib9.h>#include <ninep.h>#include <ninepserver.h>#include <draw.h>#include <cursor.h>#include "dat.h"#include "fns.h"#include "fsys.h" staticvoidupdateref(void){	int t;	Fcall *f;	Qid *qid;	Window *w; 	if(server->curc == nil)		return;	f = &server->fcall;	t = f->type;	if(t == Rwalk && f->nwqid > 0)		qid = &f->wqid[f->nwqid-1];	else		qid = &f->qid;	if((w = qwindow(qid)) == nil)		return;	if(t == Rattach || t == Rwalk)		w->ref++;	else if(t == Rclunk){		w->ref--;		if(QTYPE(qid->path) > Qdrawn)			drawclose(*qid);		if(w->ref == 0){			/* ignore kill file, delete now */			w->pid = 0;			deletewin(w);		}	}} char*fsloop(char *address, int xfd){	char *ns, *err;	Ninepserver s; 	server = &s;	if(address == nil){		ns = ninepnamespace();		if(ns == nil)			address = "tcp!*!564";		else			address = smprint("%s/wsys", ns);	}	if(debug&Debug9p)		ninepdebug();	eve = ninepsetowner(nil);	err = ninepinit(&s, &ops, address, 0555, 0);	if(err != nil)		return err;	fsinit(&s);	nineplisten(&s, xfd);	for(;;) {		err = ninepwait(&s);		if(err != nil && debug&Debug9p)			fprint(2, "%s\n", err);		if(ninepready(&s, xfd))			xnextevent();		if(s.fcall.type == Tauth)			nineperror(&s, "devwsys: authentication not required");		else			ninepdefault(&s);		updateref();		ninepreply(&s);	}	ninepend(&s);	if(ns != nil){		ninepfree(address);		ninepfree(ns);	}	return nil;}