LinuxKPI: uuid: add guid_gen() and guid_copy()
Add function used by a wireless driver. Sponsored by: The FreeBSD Foundation MFC after: 10 days Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D40249
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@ -1,7 +1,7 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 The FreeBSD Foundation
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* Copyright (c) 2021,2023 The FreeBSD Foundation
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*
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* This software was developed by Björn Zeeb under sponsorship from
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* the FreeBSD Foundation.
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@ -33,6 +33,8 @@
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#ifndef _LINUXKPI_LINUX_UUID_H
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#define _LINUXKPI_LINUX_UUID_H
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#include <linux/random.h>
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#define UUID_STRING_LEN 36
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#define GUID_INIT(x0_3, x4_5, x6_7, x8, x9, x10, x11, x12, x13, x14, x15) \
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@ -59,4 +61,19 @@ typedef struct {
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char x[16];
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} guid_t;
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static inline void
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guid_gen(guid_t *g)
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{
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get_random_bytes(g, 16);
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g->x[7] = (g->x[7] & 0x0f) | 0x40;
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g->x[8] = (g->x[8] & 0x3f) | 0x80;
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}
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static inline void
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guid_copy(guid_t *dst, const guid_t *src)
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{
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memcpy(dst, src, sizeof(*dst));
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}
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#endif /* _LINUXKPI_LINUX_UUID_H */
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