#include	"defs.h"

/*
 *
 * S. R. Bourne
 * Bell Telephone Laboratories
 *
 */

#define SIZ 512

filecopy(from, to)
	UFD	from, to;
{
	CHAR	b[SIZ];
	INT	n;

	WHILE (n=read(from, b, SIZ)) > 0
	DO IF write(to, b, n)!=n
	   THEN return(-1);
	   FI
	OD
	return(n);
}