1 /*
2  * Internal routine for unpacking UUID
3  *
4  * Copyright (C) 1996, 1997 Theodore Ts'o.
5  *
6  * %Begin-Header%
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, and the entire permission notice in its entirety,
12  *    including the disclaimer of warranties.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. The name of the author may not be used to endorse or promote
17  *    products derived from this software without specific prior
18  *    written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
23  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
30  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
31  * DAMAGE.
32  * %End-Header%
33  */
34 
35 #include "config.h"
36 #include <string.h>
37 #include "uuidP.h"
38 
uuid_unpack(const uuid_t in,struct uuid * uu)39 void uuid_unpack(const uuid_t in, struct uuid *uu)
40 {
41 	const uint8_t	*ptr = in;
42 	uint32_t		tmp;
43 
44 	tmp = *ptr++;
45 	tmp = (tmp << 8) | *ptr++;
46 	tmp = (tmp << 8) | *ptr++;
47 	tmp = (tmp << 8) | *ptr++;
48 	uu->time_low = tmp;
49 
50 	tmp = *ptr++;
51 	tmp = (tmp << 8) | *ptr++;
52 	uu->time_mid = tmp;
53 
54 	tmp = *ptr++;
55 	tmp = (tmp << 8) | *ptr++;
56 	uu->time_hi_and_version = tmp;
57 
58 	tmp = *ptr++;
59 	tmp = (tmp << 8) | *ptr++;
60 	uu->clock_seq = tmp;
61 
62 	memcpy(uu->node, ptr, 6);
63 }
64 
65