e2fsprogs/lib/uuid/pack.c

/*
 * Internal routine for packing UUID's
 * 
 * Copyright (C) 1996, 1997 Theodore Ts'o.
 *
 * %Begin-Header%
 * This file may be redistributed under the terms of the GNU Public
 * License.
 * %End-Header%
 */

#include <string.h>
#include "uuidP.h"

void uuid_pack(struct uuid *uu, uuid_t ptr)
{
	__u32	tmp;
	unsigned char	*out = ptr;

	tmp = uu->time_low;
	out[3] = (unsigned char) tmp;
	tmp >>= 8;
	out[2] = (unsigned char) tmp;
	tmp >>= 8;
	out[1] = (unsigned char) tmp;
	tmp >>= 8;
	out[0] = (unsigned char) tmp;
	
	tmp = uu->time_mid;
	out[5] = (unsigned char) tmp;
	tmp >>= 8;
	out[4] = (unsigned char) tmp;

	tmp = uu->time_hi_and_version;
	out[7] = (unsigned char) tmp;
	tmp >>= 8;
	out[6] = (unsigned char) tmp;

	tmp = uu->clock_seq;
	out[9] = (unsigned char) tmp;
	tmp >>= 8;
	out[8] = (unsigned char) tmp;

	memcpy(out+10, uu->node, 6);
}