ack/modules/src/object/wr_bytes.c

#define MININT		(1 << (sizeof(int) * 8 - 1))
#define MAXCHUNK	(~MININT)	/* Highest count we write(2).	*/
/* Notice that MAXCHUNK itself might be too large with some compilers.
   You have to put it in an int!
*/

int maxchunk = MAXCHUNK;

/*
 * Just write "cnt" bytes to file-descriptor "fd".
 */
wr_bytes(fd, string, cnt)
	register char	*string;
	register long	cnt;
{

	while (cnt) {
		register int n = cnt >= maxchunk ? maxchunk : cnt;

		if (write(fd, string, n) != n)
			wr_fatal();
		string += n;
		cnt -= n;
	}
}