28397cae41
glusterfs relies on Linux uuid implementation, which API is incompatible with most other systems's uuid. As a result, libglusterfs has to embed contrib/uuid, which is the Linux implementation, on non Linux systems. This implementation is incompatible with systtem's built in, but the symbols have the same names. Usually this is not a problem because when we link with -lglusterfs, libc's symbols are trumped. However there is a problem when a program not linked with -lglusterfs will dlopen() glusterfs component. In such a case, libc's uuid implementation is already loaded in the calling program, and it will be used instead of libglusterfs's implementation, causing crashes. A possible workaround is to use pre-load libglusterfs in the calling program (using LD_PRELOAD on NetBSD for instance), but such a mechanism is not portable, nor is it flexible. A much better approach is to rename libglusterfs's uuid_* functions to gf_uuid_* to avoid any possible conflict. This is what this change attempts. BUG: 1206587 Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.org/10017 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
/*
|
|
* compare.c --- compare whether or not two UUID's are the same
|
|
*
|
|
* Returns 0 if the two UUID's are different, and 1 if they are the same.
|
|
*
|
|
* 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 "uuidP.h"
|
|
#include <string.h>
|
|
|
|
#define UUCMP(u1,u2) if (u1 != u2) return((u1 < u2) ? -1 : 1);
|
|
|
|
int gf_uuid_compare(const uuid_t uu1, const uuid_t uu2)
|
|
{
|
|
struct uuid uuid1, uuid2;
|
|
|
|
uuid_unpack(uu1, &uuid1);
|
|
uuid_unpack(uu2, &uuid2);
|
|
|
|
UUCMP(uuid1.time_low, uuid2.time_low);
|
|
UUCMP(uuid1.time_mid, uuid2.time_mid);
|
|
UUCMP(uuid1.time_hi_and_version, uuid2.time_hi_and_version);
|
|
UUCMP(uuid1.clock_seq, uuid2.clock_seq);
|
|
return memcmp(uuid1.node, uuid2.node, 6);
|
|
}
|
|
|