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https://github.com/koverstreet/bcachefs-tools.git
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45 lines
884 B
C
45 lines
884 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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#define SB_SECTOR 8
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#define SB_LABEL_SIZE 32
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struct cache_sb {
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uint64_t csum;
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uint64_t offset; /* sector where this sb was written */
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uint64_t version;
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#define CACHE_BACKING_DEV 1
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uint8_t magic[16];
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uint8_t uuid[16];
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union {
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uint8_t set_uuid[16];
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uint64_t set_magic;
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};
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uint8_t label[SB_LABEL_SIZE];
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uint64_t flags;
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uint64_t seq;
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uint64_t pad[8];
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uint64_t nbuckets; /* device size */
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uint16_t block_size; /* sectors */
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uint16_t bucket_size; /* sectors */
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uint16_t nr_in_set;
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uint16_t nr_this_dev;
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uint32_t last_mount; /* time_t */
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uint16_t first_bucket;
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uint16_t keys; /* number of journal buckets */
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uint64_t d[512]; /* journal buckets */
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};
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#endif
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