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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (C) 1996, 1997, 1998 Theodore Ts'o.
*
* 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.
*/
/**
* @file
*
* UUID related functions originally from libuuid
*/
#ifndef _RTE_UUID_H_
#define _RTE_UUID_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
/**
* Struct describing a Universal Unique Identifier
*/
typedef unsigned char rte_uuid_t[16];
/**
* Helper for defining UUID values for id tables.
*/
#define RTE_UUID_INIT(a, b, c, d, e) { \
((a) >> 24) & 0xff, ((a) >> 16) & 0xff, \
((a) >> 8) & 0xff, (a) & 0xff, \
((b) >> 8) & 0xff, (b) & 0xff, \
((c) >> 8) & 0xff, (c) & 0xff, \
((d) >> 8) & 0xff, (d) & 0xff, \
((e) >> 40) & 0xff, ((e) >> 32) & 0xff, \
((e) >> 24) & 0xff, ((e) >> 16) & 0xff, \
((e) >> 8) & 0xff, (e) & 0xff \
}
/**
* Test if UUID is all zeros.
*
* @param uu
* The uuid to check.
* @return
* true if uuid is NULL value, false otherwise
*/
bool rte_uuid_is_null(const rte_uuid_t uu);
/**
* Copy uuid.
*
* @param dst
* Destination uuid
* @param src
* Source uuid
*/
static inline void rte_uuid_copy(rte_uuid_t dst, const rte_uuid_t src)
{
memcpy(dst, src, sizeof(rte_uuid_t));
}
/**
* Compare two UUID's
*
* @param a
* A UUID to compare
* @param b
* A UUID to compare
* @return
* returns an integer less than, equal to, or greater than zero if UUID a is
* is less than, equal, or greater than UUID b.
*/
int rte_uuid_compare(const rte_uuid_t a, const rte_uuid_t b);
/**
* Extract UUID from string
*
* @param in
* Pointer to string of characters to convert
* @param uu
* Destination UUID
* @return
* Returns 0 on success, and -1 if string is not a valid UUID.
*/
int rte_uuid_parse(const char *in, rte_uuid_t uu);
/**
* Convert UUID to string
*
* @param uu
* UUID to format
* @param out
* Resulting string buffer
* @param len
* Sizeof the available string buffer
*/
#define RTE_UUID_STRLEN (36 + 1)
void rte_uuid_unparse(const rte_uuid_t uu, char *out, size_t len);
#ifdef __cplusplus
}
#endif
#endif /* RTE_UUID_H */
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