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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021,2023 The FreeBSD Foundation
*
* This software was developed by Björn Zeeb under sponsorship from
* the FreeBSD Foundation.
*
* 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, this list of conditions and the following disclaimer.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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 ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _LINUXKPI_LINUX_UUID_H
#define _LINUXKPI_LINUX_UUID_H
#include <linux/random.h>
#define UUID_STRING_LEN 36
#define GUID_INIT(x0_3, x4_5, x6_7, x8, x9, x10, x11, x12, x13, x14, x15) \
((guid_t) { .x = { \
[0] = (x0_3) & 0xff, \
[1] = ((x0_3) >> 8) & 0xff, \
[2] = ((x0_3) >> 16) & 0xff, \
[3] = ((x0_3) >> 24) & 0xff, \
[4] = (x4_5) & 0xff, \
[5] = ((x4_5) >> 8) & 0xff, \
[6] = (x6_7) & 0xff, \
[7] = ((x6_7) >> 8) & 0xff, \
[8] = (x8), \
[9] = (x9), \
[10] = (x10), \
[11] = (x11), \
[12] = (x12), \
[13] = (x13), \
[14] = (x14), \
[15] = (x15) \
}})
typedef struct {
char x[16];
} guid_t;
static inline void
guid_gen(guid_t *g)
{
get_random_bytes(g, 16);
g->x[7] = (g->x[7] & 0x0f) | 0x40;
g->x[8] = (g->x[8] & 0x3f) | 0x80;
}
static inline void
guid_copy(guid_t *dst, const guid_t *src)
{
memcpy(dst, src, sizeof(*dst));
}
#endif /* _LINUXKPI_LINUX_UUID_H */
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