bfab1aede0
It's going to be useful, in particular, in VMBus code massively using uuids aka GUIDs. Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> Message-Id: <20171127124355.26015-1-rkagan@virtuozzo.com> Signed-off-by: Fam Zheng <famz@redhat.com>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* QEMU UUID functions
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*
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* Copyright 2016 Red Hat, Inc.
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*
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* Authors:
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* Fam Zheng <famz@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef QEMU_UUID_H
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#define QEMU_UUID_H
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#include "qemu-common.h"
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/* Version 4 UUID (pseudo random numbers), RFC4122 4.4. */
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typedef struct {
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union {
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unsigned char data[16];
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struct {
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/* Generated in BE endian, can be swapped with qemu_uuid_bswap. */
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uint32_t time_low;
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uint16_t time_mid;
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uint16_t time_high_and_version;
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uint8_t clock_seq_and_reserved;
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uint8_t clock_seq_low;
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uint8_t node[6];
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} fields;
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};
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} QemuUUID;
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#define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-" \
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"%02hhx%02hhx-%02hhx%02hhx-" \
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"%02hhx%02hhx-" \
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"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
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#define UUID_FMT_LEN 36
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#define UUID_NONE "00000000-0000-0000-0000-000000000000"
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void qemu_uuid_generate(QemuUUID *out);
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int qemu_uuid_is_null(const QemuUUID *uu);
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int qemu_uuid_is_equal(const QemuUUID *lhv, const QemuUUID *rhv);
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void qemu_uuid_unparse(const QemuUUID *uuid, char *out);
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char *qemu_uuid_unparse_strdup(const QemuUUID *uuid);
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int qemu_uuid_parse(const char *str, QemuUUID *uuid);
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void qemu_uuid_bswap(QemuUUID *uuid);
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#endif
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