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/*
* uuid.h -- private header file for uuids
*
* Copyright (C) 1996, 1997 Theodore Ts'o.
*
* %Begin-Header%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
* WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* %End-Header%
*/
#include <inttypes.h>
#include <sys/types.h>
#include "uuid.h"
#define LIBUUID_CLOCK_FILE "/var/lib/libuuid/clock.txt"
/*
* Offset between 15-Oct-1582 and 1-Jan-70
*/
#define TIME_OFFSET_HIGH 0x01B21DD2
#define TIME_OFFSET_LOW 0x13814000
/*
* Note that RFC4122 defines UUID in more details:
*
* Field Data Type Octet Note
* -------------------------------------------------
* time_low unsigned 32 0-3 The low field of the
* bit integer timestamp
*
* time_mid unsigned 16 4-5 The middle field of the
* bit integer timestamp
*
* time_hi_and_version unsigned 16 6-7 The high field of the
* bit integer timestamp multiplexed
* with the version number
*
* clock_seq_hi_and_rese unsigned 8 8 The high field of the
* rved bit integer clock sequence
* multiplexed with the
* variant
*
* clock_seq_low unsigned 8 9 The low field of the
* bit integer clock sequence
*
* node unsigned 48 10-15 The spatially unique
* bit integer node identifier
*
* We have clock_seq_hi_and_reserved (8bit) and clock_seq_low (8bit)
* merged into clock_seq (16bit).
*/
struct uuid {
uint32_t time_low;
uint16_t time_mid;
uint16_t time_hi_and_version;
uint16_t clock_seq;
uint8_t node[6];
};
/*
* prototypes
*/
void uuid_pack(const struct uuid *uu, uuid_t ptr);
void uuid_unpack(const uuid_t in, struct uuid *uu);
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