mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-23 19:49:43 +00:00
1439f21307
The little end UUID is used in many places, so make NVDIMM_UUID_LE to a common macro to convert the UUID to a little end array. Reviewed-by: Xiang Zheng <zhengxiang9@huawei.com> Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com> Message-id: 20200512030609.19593-2-gengdongjiu@huawei.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/*
|
|
* QEMU UUID functions
|
|
*
|
|
* Copyright 2016 Red Hat, Inc.
|
|
*
|
|
* Authors:
|
|
* Fam Zheng <famz@redhat.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_UUID_H
|
|
#define QEMU_UUID_H
|
|
|
|
|
|
/* Version 4 UUID (pseudo random numbers), RFC4122 4.4. */
|
|
|
|
typedef struct {
|
|
union {
|
|
unsigned char data[16];
|
|
struct {
|
|
/* Generated in BE endian, can be swapped with qemu_uuid_bswap. */
|
|
uint32_t time_low;
|
|
uint16_t time_mid;
|
|
uint16_t time_high_and_version;
|
|
uint8_t clock_seq_and_reserved;
|
|
uint8_t clock_seq_low;
|
|
uint8_t node[6];
|
|
} fields;
|
|
};
|
|
} QemuUUID;
|
|
|
|
/**
|
|
* UUID_LE - converts the fields of UUID to little-endian array,
|
|
* each of parameters is the filed of UUID.
|
|
*
|
|
* @time_low: The low field of the timestamp
|
|
* @time_mid: The middle field of the timestamp
|
|
* @time_hi_and_version: The high field of the timestamp
|
|
* multiplexed with the version number
|
|
* @clock_seq_hi_and_reserved: The high field of the clock
|
|
* sequence multiplexed with the variant
|
|
* @clock_seq_low: The low field of the clock sequence
|
|
* @node0: The spatially unique node0 identifier
|
|
* @node1: The spatially unique node1 identifier
|
|
* @node2: The spatially unique node2 identifier
|
|
* @node3: The spatially unique node3 identifier
|
|
* @node4: The spatially unique node4 identifier
|
|
* @node5: The spatially unique node5 identifier
|
|
*/
|
|
#define UUID_LE(time_low, time_mid, time_hi_and_version, \
|
|
clock_seq_hi_and_reserved, clock_seq_low, node0, node1, node2, \
|
|
node3, node4, node5) \
|
|
{ (time_low) & 0xff, ((time_low) >> 8) & 0xff, ((time_low) >> 16) & 0xff, \
|
|
((time_low) >> 24) & 0xff, (time_mid) & 0xff, ((time_mid) >> 8) & 0xff, \
|
|
(time_hi_and_version) & 0xff, ((time_hi_and_version) >> 8) & 0xff, \
|
|
(clock_seq_hi_and_reserved), (clock_seq_low), (node0), (node1), (node2),\
|
|
(node3), (node4), (node5) }
|
|
|
|
#define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-" \
|
|
"%02hhx%02hhx-%02hhx%02hhx-" \
|
|
"%02hhx%02hhx-" \
|
|
"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
|
|
|
|
#define UUID_FMT_LEN 36
|
|
|
|
#define UUID_NONE "00000000-0000-0000-0000-000000000000"
|
|
|
|
void qemu_uuid_generate(QemuUUID *out);
|
|
|
|
int qemu_uuid_is_null(const QemuUUID *uu);
|
|
|
|
int qemu_uuid_is_equal(const QemuUUID *lhv, const QemuUUID *rhv);
|
|
|
|
void qemu_uuid_unparse(const QemuUUID *uuid, char *out);
|
|
|
|
char *qemu_uuid_unparse_strdup(const QemuUUID *uuid);
|
|
|
|
int qemu_uuid_parse(const char *str, QemuUUID *uuid);
|
|
|
|
QemuUUID qemu_uuid_bswap(QemuUUID uuid);
|
|
|
|
#endif
|