diff options
| author | Bjoern A. Zeeb <bz@FreeBSD.org> | 2023-05-23 23:15:12 +0000 |
|---|---|---|
| committer | Bjoern A. Zeeb <bz@FreeBSD.org> | 2023-06-26 09:20:27 +0000 |
| commit | bd0b4de28d6b1fb598b0e2bd5f3713ac427cbda7 (patch) | |
| tree | 357daeca6662f9da7abf4646424a79bc78e4f911 | |
| parent | 523d17b262905c8dab686025edc337d91c0f3a86 (diff) | |
| download | src-bd0b4de28d6b1fb598b0e2bd5f3713ac427cbda7.tar.gz src-bd0b4de28d6b1fb598b0e2bd5f3713ac427cbda7.zip | |
LinuxKPI: uuid: add guid_gen() and guid_copy()
Add function used by a wireless driver.
Sponsored by: The FreeBSD Foundation
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D40249
(cherry picked from commit c1b6e9121e889608b86530d1a37047797dfeb460)
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/uuid.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/uuid.h b/sys/compat/linuxkpi/common/include/linux/uuid.h index 31a018497f78..63b77dd7d0bc 100644 --- a/sys/compat/linuxkpi/common/include/linux/uuid.h +++ b/sys/compat/linuxkpi/common/include/linux/uuid.h @@ -1,7 +1,7 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * - * Copyright (c) 2021 The FreeBSD Foundation + * Copyright (c) 2021,2023 The FreeBSD Foundation * * This software was developed by Björn Zeeb under sponsorship from * the FreeBSD Foundation. @@ -33,6 +33,8 @@ #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) \ @@ -59,4 +61,19 @@ 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 */ |