#include	"lib9.h"#include	"sys.h"#include	"error.h" enum{	Qdir=	0,	Qbin,	Qdev,	Qenv,	Qproc,	Qnet,	Qmnt}; extern ulong	bootlen;extern uchar	bootcode[]; static Dirtab rootdir[]={	"bin",		{Qbin|CHDIR},	0,	0777,	"dev",		{Qdev|CHDIR},	0,	0777,	"env",		{Qenv|CHDIR},	0,	0777,	"proc",		{Qproc|CHDIR},	0,	0777,	"net",		{Qnet|CHDIR},	0,	0777,	"mnt",		{Qmnt|CHDIR},	0,	0777,}; #define Nrootdir	(sizeof(rootdir)/sizeof(rootdir[0])) voidrootreset(void){} voidrootinit(void){} Chan*rootattach(void *spec){	return devattach('/', spec);} Chan*rootclone(Chan *c, Chan *nc){	return devclone(c, nc);} int	 rootwalk(Chan *c, char *name){	return devwalk(c, name, rootdir, Nrootdir, devgen);} void	 rootstat(Chan *c, char *dp){	devstat(c, dp, rootdir, Nrootdir, devgen);} Chan*rootopen(Chan *c, int omode){	return devopen(c, omode, rootdir, Nrootdir, devgen);} void	 rootcreate(Chan *c, char *name, int n, ulong offset){	error(Eperm);} /* * ns_remove() knows this is a nop */void	 rootclose(Chan *c){}  long	 rootread(Chan *c, void *buf, long n, ulong offset){	ulong t; 	t = c->qid.path & ~CHDIR;	switch(t){	case Qdir:		return devdirread(c, buf, n, rootdir, Nrootdir, devgen);	default:		return 0;	}} long	 rootwrite(Chan *c, void *buf, long n, ulong offset){	USED(c);	USED(buf);	USED(n);	USED(offset); 	error(Eperm);	return 0;} void	 rootremove(Chan *c){	USED(c); 	error(Eperm);} void	 rootwstat(Chan *c, char *buf){	USED(c);	USED(buf); 	error(Eperm);}