1 /*
2 * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19 FILE_LICENCE ( GPL2_OR_LATER );
20
21 #include <stdint.h>
22 #include <stdio.h>
23 #include <byteswap.h>
24 #include <gpxe/uuid.h>
25
26 /** @file
27 *
28 * Universally unique IDs
29 *
30 */
31
32 /**
33 * Convert UUID to printable string
34 *
35 * @v uuid UUID
36 * @ret string UUID in canonical form
37 */
uuid_ntoa(union uuid * uuid)38 char * uuid_ntoa ( union uuid *uuid ) {
39 static char buf[37]; /* "00000000-0000-0000-0000-000000000000" */
40
41 sprintf ( buf, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
42 be32_to_cpu ( uuid->canonical.a ),
43 be16_to_cpu ( uuid->canonical.b ),
44 be16_to_cpu ( uuid->canonical.c ),
45 be16_to_cpu ( uuid->canonical.d ),
46 uuid->canonical.e[0], uuid->canonical.e[1],
47 uuid->canonical.e[2], uuid->canonical.e[3],
48 uuid->canonical.e[4], uuid->canonical.e[5] );
49 return buf;
50 }
51