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65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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#include <inttypes.h>
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#include <sys/types.h>
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struct dm_pool;
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struct id {
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int8_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' + padding
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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 + 7];
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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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int lvid_in_restricted_range(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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char *id_format_and_copy(struct dm_pool *mem, const struct id *id);
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#endif
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