| 1 | /*
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| 2 | * Copyright (c) 2025 Miroslav Cimerman
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup hr
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | */
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| 35 |
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| 36 | #ifndef _HR_SUPERBLOCK_H
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| 37 | #define _HR_SUPERBLOCK_H
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| 38 |
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| 39 | #include "var.h"
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| 40 |
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| 41 | typedef struct hr_volume hr_volume_t;
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| 42 |
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| 43 | typedef enum {
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| 44 | HR_METADATA_NATIVE = 0,
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| 45 | HR_METADATA_GEOM_MIRROR = 1,
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| 46 | HR_METADATA_LAST_DUMMY = 2
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| 47 | } metadata_type_t;
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| 48 |
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| 49 | #define HR_METADATA_HOTSPARE_SUPPORT 0x01
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| 50 |
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| 51 | typedef struct hr_superblock_ops {
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| 52 | void *(*alloc_struct)(void);
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| 53 | errno_t (*init_vol2meta)(const hr_volume_t *, void *);
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| 54 | errno_t (*init_meta2vol)(const list_t *, hr_volume_t *);
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| 55 | void (*encode)(void *, void *);
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| 56 | errno_t (*decode)(const void *, void *);
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| 57 | errno_t (*get_block)(service_id_t, void **);
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| 58 | errno_t (*write_block)(service_id_t, const void *);
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| 59 | bool (*has_valid_magic)(const void *);
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| 60 | bool (*compare_uuids)(const void *, const void *);
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| 61 | void (*inc_counter)(void *);
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| 62 | errno_t (*save)(hr_volume_t *, bool);
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| 63 | const char *(*get_devname)(const void *);
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| 64 | hr_level_t (*get_level)(const void *);
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| 65 | uint64_t (*get_data_offset)(void);
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| 66 | size_t (*get_size)(void);
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| 67 | uint8_t (*get_flags)(void);
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| 68 | metadata_type_t (*get_type)(void);
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| 69 | void (*dump)(const void *);
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| 70 | } hr_superblock_ops_t;
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| 71 |
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| 72 | hr_superblock_ops_t *get_type_ops(metadata_type_t);
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| 73 | extern errno_t find_metadata(service_id_t, void **, metadata_type_t *);
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| 74 |
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| 75 | #endif
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| 76 |
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| 77 | /** @}
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| 78 | */
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