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/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will 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 version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/obdclass/uuid.c
*
* Public include file for the UUID library
*/
#define DEBUG_SUBSYSTEM S_CLASS
#include "../../include/linux/libcfs/libcfs.h"
#include "../include/obd_support.h"
#include "../include/obd_class.h"
static inline __u32 consume(int nob, __u8 **ptr)
{
__u32 value;
LASSERT(nob <= sizeof(value));
for (value = 0; nob > 0; --nob)
value = (value << 8) | *((*ptr)++);
return value;
}
#define CONSUME(val, ptr) (val) = consume(sizeof(val), (ptr))
static void uuid_unpack(class_uuid_t in, __u16 *uu, int nr)
{
__u8 *ptr = in;
LASSERT(nr * sizeof(*uu) == sizeof(class_uuid_t));
while (nr-- > 0)
CONSUME(uu[nr], &ptr);
}
void class_uuid_unparse(class_uuid_t uu, struct obd_uuid *out)
{
/* uu as an array of __u16's */
__u16 uuid[sizeof(class_uuid_t) / sizeof(__u16)];
CLASSERT(ARRAY_SIZE(uuid) == 8);
uuid_unpack(uu, uuid, ARRAY_SIZE(uuid));
sprintf(out->uuid, "%04x%04x-%04x-%04x-%04x-%04x%04x%04x",
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7]);
}
EXPORT_SYMBOL(class_uuid_unparse);
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