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 "libbcachefs/bcachefs_format.h"
   8 #include "tools-util.h"
   9 #include "libbcachefs/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         unsigned        encoded_extent_max;
  20
  21         unsigned        meta_replicas;
  22         unsigned        data_replicas;
  23
  24         unsigned        meta_replicas_required;
  25         unsigned        data_replicas_required;
  26
  27         unsigned        meta_csum_type;
  28         unsigned        data_csum_type;
  29         unsigned        compression_type;
  30
  31         bool            encrypted;
  32         char            *passphrase;
  33 };
  34
  35 static inline struct format_opts format_opts_default()
  36 {
  37         return (struct format_opts) {
  38                 .on_error_action        = BCH_ON_ERROR_RO,
  39                 .encoded_extent_max     = 128,
  40                 .meta_csum_type         = BCH_CSUM_CRC32C,
  41                 .data_csum_type         = BCH_CSUM_CRC32C,
  42                 .meta_replicas          = 1,
  43                 .data_replicas          = 1,
  44                 .meta_replicas_required = 1,
  45                 .data_replicas_required = 1,
  46         };
  47 }
  48
  49 struct dev_opts {
  50         int             fd;
  51         char            *path;
  52         u64             size; /* 512 byte sectors */
  53         unsigned        bucket_size;
  54         unsigned        tier;
  55         unsigned        data_allowed;
  56         bool            discard;
  57
  58         u64             nbuckets;
  59
  60         u64             sb_offset;
  61         u64             sb_end;
  62 };
  63
  64 static inline struct dev_opts dev_opts_default()
  65 {
  66         return (struct dev_opts) {
  67                 .data_allowed           = ~0U << 2,
  68         };
  69 }
  70
  71 void bch2_pick_bucket_size(struct format_opts, struct dev_opts *);
  72 struct bch_sb *bch2_format(struct format_opts, struct dev_opts *, size_t);
  73
  74 void bch2_super_write(int, struct bch_sb *);
  75 struct bch_sb *__bch2_super_read(int, u64);
  76
  77 void bch2_super_print(struct bch_sb *, int);
  78
  79 #endif /* _LIBBCACHE_H */