iPXE
uuid.c
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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., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301, USA.
18  *
19  * You can also choose to distribute this program under the terms of
20  * the Unmodified Binary Distribution Licence (as given in the file
21  * COPYING.UBDL), provided that you have satisfied its requirements.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 #include <stdint.h>
27 #include <stdio.h>
28 #include <byteswap.h>
29 #include <ipxe/uuid.h>
30 
31 /** @file
32  *
33  * Universally unique IDs
34  *
35  */
36 
37 /**
38  * Convert UUID to printable string
39  *
40  * @v uuid UUID
41  * @ret string UUID in canonical form
42  */
43 const char * uuid_ntoa ( const union uuid *uuid ) {
44  static char buf[37]; /* "00000000-0000-0000-0000-000000000000" */
45 
46  sprintf ( buf, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
51  uuid->canonical.e[0], uuid->canonical.e[1],
52  uuid->canonical.e[2], uuid->canonical.e[3],
53  uuid->canonical.e[4], uuid->canonical.e[5] );
54  return buf;
55 }
uint32_t a
8 hex digits, big-endian
Definition: uuid.h:19
uint16_t c
2 hex digits, big-endian
Definition: uuid.h:23
A universally unique ID.
Definition: uuid.h:15
#define sprintf(buf, fmt,...)
Write a formatted string to a buffer.
Definition: stdio.h:36
Universally unique IDs.
uint16_t d
2 hex digits, big-endian
Definition: uuid.h:25
#define be32_to_cpu(value)
Definition: byteswap.h:116
#define be16_to_cpu(value)
Definition: byteswap.h:115
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
struct uuid::@562 canonical
Canonical form (00000000-0000-0000-0000-000000000000)
uint16_t b
2 hex digits, big-endian
Definition: uuid.h:21
uint8_t e[6]
12 hex digits, big-endian
Definition: uuid.h:27
const char * uuid_ntoa(const union uuid *uuid)
Convert UUID to printable string.
Definition: uuid.c:43