#include <lib9.h>#include "styxserver.h" int nq;Styxserver *server; voidmyinit(Styxserver *s){	styxaddfile(s, Qroot, 1, "fred", 0664, "inferno");	styxaddfile(s, Qroot, 2, "joe", 0664, "inferno");	styxadddir(s, Qroot, 3, "adir", 0775, "inferno");	styxaddfile(s, 3, 4, "bill", 0664, "inferno");	styxadddir(s, Qroot, 5, "new", 0775, "inferno");	styxadddir(s, 5, 6, "cdir", 0775, "inferno");	styxaddfile(s, 6, 7, "cfile", 0664, "inferno");	nq = 8;} char *mycreate(Qid *qid, char *name, int perm, int mode){	int isdir;	Styxfile *f; 	USED(mode);	isdir = perm&DMDIR;	if(isdir)		f = styxadddir(server, qid->path, nq++, name , perm, "inferno");	else		f = styxaddfile(server, qid->path, nq++, name, perm, "inferno");	if(f == nil)		return Eexist;	*qid = f->d.qid;	return nil;} char *myremove(Qid qid){	Styxfile *f; 	f = styxfindfile(server, qid.path);	if(f != nil && (f->d.qid.type&QTDIR) && f->child != nil)		return "directory not empty"; 	if(styxrmfile(server, qid.path) < 0)		return Enonexist;		return nil;} char *myread(Qid qid, char *d, ulong *n, vlong offset){	if(qid.path != 1){		*n = 0;		return nil;	}	*n = styxreadstr(offset, d, *n, "abcdefghijklmn");	return nil;} Styxops ops = {	nil,			/* newclient */	nil,			/* freeclient */ 	nil,			/* attach */	nil,			/* walk */	nil,			/* open */	mycreate,		/* create */	myread,		/* read */	nil,			/* write */	nil,			/* close */	myremove,	/* remove */	nil,			/* stat */	nil,			/* wstat */}; main(int argc, char **argv){	Styxserver s; 	USED(argc);	USED(argv);	server = &s;	styxdebug();	styxinit(&s, &ops, "6701", 0555, 0);	myinit(&s);	for(;;){		styxwait(&s);		styxprocess(&s);	}	return 0;}