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cc8f6e3dbc
[This situation could occur if the uuids were oritinally created by LVM1 on a system without /dev/urandom.]
48 lines
958 B
C
48 lines
958 B
C
/*
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* Copyright (C) 2001 Sistina Software (UK) Limited.
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*
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* This file is released under the GPL.
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*/
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#ifndef _LVM_UUID_H
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#define _LVM_UUID_H
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#define ID_LEN 32
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#define ID_LEN_S "32"
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struct id {
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uint8_t uuid[ID_LEN];
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};
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/*
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* Unique logical volume identifier
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* With format1 this is VG uuid + LV uuid + '\0'
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*/
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union lvid {
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struct id id[2];
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char s[2 * sizeof(struct id) + 1];
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};
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int lvid_from_lvnum(union lvid *lvid, struct id *vgid, uint32_t lv_num);
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int lvnum_from_lvid(union lvid *lvid);
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void uuid_from_num(char *uuid, uint32_t num);
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int lvid_create(union lvid *lvid, struct id *vgid);
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int id_create(struct id *id);
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int id_valid(struct id *id);
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int id_equal(const struct id *lhs, const struct id *rhs);
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/*
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* Fills 'buffer' with a more human readable form
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* of the uuid.
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*/
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int id_write_format(const struct id *id, char *buffer, size_t size);
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/*
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* Reads a formatted uuid.
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*/
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int id_read_format(struct id *id, const char *buffer);
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#endif
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