d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

LinuxKPI: uuid: add guid_gen() and guid_copy()

Browse Source 
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
This commit is contained in:
Bjoern A. Zeeb 2023-05-23 23:15:12 +00:00
parent 80764cdb73
commit c1b6e9121e
1 changed files with 18 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
sys/compat/linuxkpi/common/include/linux/uuid.h
View File

@ -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 */