#include	<u.h>#include	<libc.h>#include	<fcall.h> uintsizeD2Mu(Dir *d, int dotu){	char *sv[5];	int i, ns, nstr, fixlen; 	sv[0] = d->name;	sv[1] = d->uid;	sv[2] = d->gid;	sv[3] = d->muid;		fixlen = STATFIXLEN;	nstr = 4;	if(dotu){		fixlen = STATFIXLENU;		sv[4] = d->ext;		nstr = 5;	}		ns = 0;	for(i = 0; i < nstr; i++)		if(sv[i])			ns += strlen(sv[i]); 	return fixlen + ns;} uintsizeD2M(Dir *d){	return sizeD2Mu(d, 0);} uintconvD2Mu(Dir *d, uchar *buf, uint nbuf, int dotu){	uchar *p, *ebuf;	char *sv[5];	int i, ns, nsv[5], ss, nstr, fixlen; 	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; 	fixlen = STATFIXLEN;	nstr = 4;	if(dotu){		fixlen = STATFIXLENU;		sv[4] = d->ext;		nstr = 5;	}		ns = 0;	for(i = 0; i < nstr; i++){		if(sv[i])			nsv[i] = strlen(sv[i]);		else			nsv[i] = 0;		ns += nsv[i];	} 	ss = fixlen + 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 < nstr; 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(dotu){		PBIT32(p, d->uidnum);		p += BIT32SZ;		PBIT32(p, d->gidnum);		p += BIT32SZ;		PBIT32(p, d->muidnum);		p += BIT32SZ;	} 	if(ss != p - buf)		return 0; 	return p - buf;} uintconvD2M(Dir *d, uchar *buf, uint nbuf){	return convD2Mu(d, buf, nbuf, 0);}