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

   1 #ifndef _LIBBCACHE_H
   2 #define _LIBBCACHE_H
   3
   4 #include <linux/uuid.h>
   5 #include <stdbool.h>
   6
   7 #include "bcachefs_format.h"
   8 #include "tools-util.h"
   9 #include "vstructs.h"
  10
  11 struct cache_sb;
  12
  13 enum fsck_err_opts {
  14         FSCK_ERR_ASK,
  15         FSCK_ERR_YES,
  16         FSCK_ERR_NO,
  17 };
  18
  19 extern enum fsck_err_opts fsck_err_opt;
  20
  21 struct format_opts {
  22         char            *label;
  23         uuid_le         uuid;
  24
  25         unsigned        on_error_action;
  26         unsigned        max_journal_entry_size; /* will be removed */
  27
  28         unsigned        block_size;
  29         unsigned        btree_node_size;
  30
  31         unsigned        meta_replicas;
  32         unsigned        data_replicas;
  33
  34         unsigned        meta_replicas_required;
  35         unsigned        data_replicas_required;
  36
  37         unsigned        meta_csum_type;
  38         unsigned        data_csum_type;
  39         unsigned        compression_type;
  40
  41         bool            encrypted;
  42         char            *passphrase;
  43 };
  44
  45 static inline struct format_opts format_opts_default()
  46 {
  47         return (struct format_opts) {
  48                 .on_error_action        = BCH_ON_ERROR_RO,
  49                 .meta_csum_type         = BCH_CSUM_CRC32C,
  50                 .data_csum_type         = BCH_CSUM_CRC32C,
  51                 .meta_replicas          = 1,
  52                 .data_replicas          = 1,
  53                 .meta_replicas_required = 1,
  54                 .data_replicas_required = 1,
  55         };
  56 }
  57
  58 struct dev_opts {
  59         int             fd;
  60         char            *path;
  61         u64             size; /* 512 byte sectors */
  62         unsigned        bucket_size;
  63         unsigned        tier;
  64         bool            discard;
  65
  66         u64             nbuckets;
  67
  68         u64             sb_offset;
  69         u64             sb_end;
  70 };
  71
  72 struct bch_sb *bcache_format(struct format_opts, struct dev_opts *, size_t);
  73
  74 void bcache_super_write(int, struct bch_sb *);
  75 struct bch_sb *__bcache_super_read(int, u64);
  76 struct bch_sb *bcache_super_read(const char *);
  77
  78 void bcache_super_print(struct bch_sb *, int);
  79
  80 #endif /* _LIBBCACHE_H */