[1765] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * compare.c --- compare whether or not two UUID's are the same
|
---|
| 4 | *
|
---|
| 5 | * Returns 0 if the two UUID's are different, and 1 if they are the same.
|
---|
| 6 | *
|
---|
| 7 | * Copyright (C) 1996, 1997 Theodore Ts'o.
|
---|
| 8 | *
|
---|
| 9 | * %Begin-Header%
|
---|
| 10 | * Redistribution and use in source and binary forms, with or without
|
---|
| 11 | * modification, are permitted provided that the following conditions
|
---|
| 12 | * are met:
|
---|
| 13 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 14 | * notice, and the entire permission notice in its entirety,
|
---|
| 15 | * including the disclaimer of warranties.
|
---|
| 16 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
| 17 | * notice, this list of conditions and the following disclaimer in the
|
---|
| 18 | * documentation and/or other materials provided with the distribution.
|
---|
| 19 | * 3. The name of the author may not be used to endorse or promote
|
---|
| 20 | * products derived from this software without specific prior
|
---|
| 21 | * written permission.
|
---|
| 22 | *
|
---|
| 23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
---|
| 24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
---|
| 25 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
|
---|
| 26 | * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
|
---|
| 27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
---|
| 28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
---|
| 29 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
---|
| 30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
---|
| 31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
---|
| 32 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
---|
| 33 | * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
|
---|
| 34 | * DAMAGE.
|
---|
| 35 | * %End-Header%
|
---|
| 36 | */
|
---|
| 37 |
|
---|
| 38 | #include "uuidP.h"
|
---|
| 39 | #include <string.h>
|
---|
| 40 |
|
---|
| 41 | #define UUCMP(u1,u2) if (u1 != u2) return (u1 < u2) ? -1 : 1;
|
---|
| 42 |
|
---|
| 43 | int uuid_compare(const uuid_t uu1, const uuid_t uu2)
|
---|
| 44 | {
|
---|
| 45 | struct uuid uuid1, uuid2;
|
---|
| 46 |
|
---|
| 47 | uuid_unpack(uu1, &uuid1);
|
---|
| 48 | uuid_unpack(uu2, &uuid2);
|
---|
| 49 |
|
---|
| 50 | UUCMP(uuid1.time_low, uuid2.time_low);
|
---|
| 51 | UUCMP(uuid1.time_mid, uuid2.time_mid);
|
---|
| 52 | UUCMP(uuid1.time_hi_and_version, uuid2.time_hi_and_version);
|
---|
| 53 | UUCMP(uuid1.clock_seq, uuid2.clock_seq);
|
---|
| 54 | return memcmp(uuid1.node, uuid2.node, 6);
|
---|
| 55 | }
|
---|