mirror of
https://github.com/koverstreet/bcachefs-tools.git
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46 lines
879 B
C
46 lines
879 B
C
#ifndef _BCACHE_H
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#define _BCACHE_H
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static const char bcache_magic[] = {
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0xc6, 0x85, 0x73, 0xf6, 0x4e, 0x1a, 0x45, 0xca,
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0x82, 0x65, 0xf5, 0x7f, 0x48, 0xba, 0x6d, 0x81 };
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struct bkey {
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uint64_t header;
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uint64_t key;
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uint64_t ptr[];
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};
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struct cache_sb {
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uint8_t magic[16];
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uint8_t uuid[16];
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uint8_t set_uuid[16];
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uint64_t sequence;
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#define CACHE_CLEAN 1
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#define CACHE_SYNC 2
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#define CACHE_BACKING_DEV 4
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uint32_t version;
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uint16_t block_size; /* sectors */
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uint16_t bucket_size; /* sectors */
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uint32_t journal_start; /* buckets */
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uint32_t first_bucket; /* start of data */
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uint64_t nbuckets; /* device size */
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union {
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struct bkey btree_root;
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uint64_t _pad[8];
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};
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uint16_t btree_level;
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uint16_t nr_in_set;
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uint16_t nr_this_dev;
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uint16_t _pad[1];
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};
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struct bucket_disk {
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uint16_t priority;
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uint8_t generation;
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} __attribute((packed));
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#endif
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