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 format_opts {
  12         char            *label;
  13         uuid_le         uuid;
  14
  15         unsigned        on_error_action;
  16
  17         unsigned        block_size;
  18         unsigned        btree_node_size;
  19
  20         unsigned        meta_replicas;
  21         unsigned        data_replicas;
  22
  23         unsigned        meta_replicas_required;
  24         unsigned        data_replicas_required;
  25
  26         unsigned        meta_csum_type;
  27         unsigned        data_csum_type;
  28         unsigned        compression_type;
  29
  30         bool            encrypted;
  31         char            *passphrase;
  32 };
  33
  34 static inline struct format_opts format_opts_default()
  35 {
  36         return (struct format_opts) {
  37                 .on_error_action        = BCH_ON_ERROR_RO,
  38                 .meta_csum_type         = BCH_CSUM_CRC32C,
  39                 .data_csum_type         = BCH_CSUM_CRC32C,
  40                 .meta_replicas          = 1,
  41                 .data_replicas          = 1,
  42                 .meta_replicas_required = 1,
  43                 .data_replicas_required = 1,
  44         };
  45 }
  46
  47 struct dev_opts {
  48         int             fd;
  49         char            *path;
  50         u64             size; /* 512 byte sectors */
  51         unsigned        bucket_size;
  52         unsigned        tier;
  53         bool            discard;
  54
  55         u64             nbuckets;
  56
  57         u64             sb_offset;
  58         u64             sb_end;
  59 };
  60
  61 void bch2_pick_bucket_size(struct format_opts, struct dev_opts *);
  62 struct bch_sb *bch2_format(struct format_opts, struct dev_opts *, size_t);
  63
  64 void bch2_super_write(int, struct bch_sb *);
  65 struct bch_sb *__bch2_super_read(int, u64);
  66 struct bch_sb *bch2_super_read(const char *);
  67
  68 void bch2_super_print(struct bch_sb *, int);
  69
  70 #endif /* _LIBBCACHE_H */