git.sesse.net Git - bcachefs-tools-debian/blob - libbcache/checksum.h

   1 #ifndef _BCACHE_CHECKSUM_H
   2 #define _BCACHE_CHECKSUM_H
   3
   4 #include "btree_types.h"
   5
   6 u64 bch_crc64_update(u64, const void *, size_t);
   7
   8 u64 bch_checksum_update(unsigned, u64, const void *, size_t);
   9 u64 bch_checksum(unsigned, const void *, size_t);
  10 u32 bch_checksum_bio(struct bio *, unsigned);
  11
  12 /*
  13  * This is used for various on disk data structures - cache_sb, prio_set, bset,
  14  * jset: The checksum is _always_ the first 8 bytes of these structs
  15  */
  16 #define __csum_set(i, u64s, type)                                       \
  17 ({                                                                      \
  18         const void *start = ((const void *) (i)) + sizeof(u64);         \
  19         const void *end = __bkey_idx(i, u64s);                          \
  20                                                                         \
  21         bch_checksum(type, start, end - start);                         \
  22 })
  23
  24 #endif /* _BCACHE_CHECKSUM_H */