64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
|
||
|
|
* All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it would be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write the Free Software Foundation,
|
||
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
#include <xfs.h>
|
||
|
|
|
||
|
|
/* IRIX interpretation of an uuid_t */
|
||
|
|
typedef struct {
|
||
|
|
__be32 uu_timelow;
|
||
|
|
__be16 uu_timemid;
|
||
|
|
__be16 uu_timehi;
|
||
|
|
__be16 uu_clockseq;
|
||
|
|
__be16 uu_node[3];
|
||
|
|
} xfs_uu_t;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* uuid_getnodeuniq - obtain the node unique fields of a UUID.
|
||
|
|
*
|
||
|
|
* This is not in any way a standard or condoned UUID function;
|
||
|
|
* it just something that's needed for user-level file handles.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
uuid_getnodeuniq(uuid_t *uuid, int fsid [2])
|
||
|
|
{
|
||
|
|
xfs_uu_t *uup = (xfs_uu_t *)uuid;
|
||
|
|
|
||
|
|
fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) |
|
||
|
|
be16_to_cpu(uup->uu_timemid);
|
||
|
|
fsid[1] = be32_to_cpu(uup->uu_timelow);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
uuid_is_nil(uuid_t *uuid)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
char *cp = (char *)uuid;
|
||
|
|
|
||
|
|
if (uuid == NULL)
|
||
|
|
return 0;
|
||
|
|
/* implied check of version number here... */
|
||
|
|
for (i = 0; i < sizeof *uuid; i++)
|
||
|
|
if (*cp++) return 0; /* not nil */
|
||
|
|
return 1; /* is nil */
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
uuid_equal(uuid_t *uuid1, uuid_t *uuid2)
|
||
|
|
{
|
||
|
|
return memcmp(uuid1, uuid2, sizeof(uuid_t)) ? 0 : 1;
|
||
|
|
}
|