#include	"lib9.h"#include	"fcall.h" uintsizeD2M(Dir *d){	char *sv[4];	int i, ns; 	sv[0] = d->name;	sv[1] = d->uid;	sv[2] = d->gid;	sv[3] = d->muid; 	ns = 0;	for(i = 0; i < 4; i++)		if(sv[i])			ns += strlen(sv[i]); 	return STATFIXLEN + ns;} uintconvD2M(Dir *d, uchar *buf, uint nbuf){	uchar *p, *ebuf;	char *sv[4];	int i, ns, nsv[4], ss; 	if(nbuf < BIT16SZ)		return 0; 	p = buf;	ebuf = buf + nbuf; 	sv[0] = d->name;	sv[1] = d->uid;	sv[2] = d->gid;	sv[3] = d->muid; 	ns = 0;	for(i = 0; i < 4; i++){		if(sv[i])			nsv[i] = strlen(sv[i]);		else			nsv[i] = 0;		ns += nsv[i];	} 	ss = STATFIXLEN + ns; 	/* set size befor erroring, so user can know how much is needed */	/* note that length excludes count field itself */	PBIT16(p, ss-BIT16SZ);	p += BIT16SZ; 	if(ss > nbuf)		return BIT16SZ; 	PBIT16(p, d->type);	p += BIT16SZ;	PBIT32(p, d->dev);	p += BIT32SZ;	PBIT8(p, d->qid.type);	p += BIT8SZ;	PBIT32(p, d->qid.vers);	p += BIT32SZ;	PBIT64(p, d->qid.path);	p += BIT64SZ;	PBIT32(p, d->mode);	p += BIT32SZ;	PBIT32(p, d->atime);	p += BIT32SZ;	PBIT32(p, d->mtime);	p += BIT32SZ;	PBIT64(p, d->length);	p += BIT64SZ; 	for(i = 0; i < 4; i++){		ns = nsv[i];		if(p + ns + BIT16SZ > ebuf)			return 0;		PBIT16(p, ns);		p += BIT16SZ;		if(ns)			memmove(p, sv[i], ns);		p += ns;	} 	if(ss != p - buf)		return 0; 	return p - buf;}