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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_OPTS_H
   3 #define _BCACHEFS_OPTS_H
   4
   5 #include <linux/bug.h>
   6 #include <linux/log2.h>
   7 #include <linux/string.h>
   8 #include <linux/sysfs.h>
   9 #include "bcachefs_format.h"
  10
  11 extern const char * const bch2_error_actions[];
  12 extern const char * const bch2_sb_features[];
  13 extern const char * const bch2_sb_compat[];
  14 extern const char * const bch2_btree_ids[];
  15 extern const char * const bch2_csum_types[];
  16 extern const char * const bch2_csum_opts[];
  17 extern const char * const bch2_compression_types[];
  18 extern const char * const bch2_compression_opts[];
  19 extern const char * const bch2_str_hash_types[];
  20 extern const char * const bch2_str_hash_opts[];
  21 extern const char * const bch2_data_types[];
  22 extern const char * const bch2_member_states[];
  23 extern const char * const bch2_jset_entry_types[];
  24 extern const char * const bch2_fs_usage_types[];
  25 extern const char * const bch2_d_types[];
  26
  27 static inline const char *bch2_d_type_str(unsigned d_type)
  28 {
  29         return (d_type < BCH_DT_MAX ? bch2_d_types[d_type] : NULL) ?: "(bad d_type)";
  30 }
  31
  32 /*
  33  * Mount options; we also store defaults in the superblock.
  34  *
  35  * Also exposed via sysfs: if an option is writeable, and it's also stored in
  36  * the superblock, changing it via sysfs (currently? might change this) also
  37  * updates the superblock.
  38  *
  39  * We store options as signed integers, where -1 means undefined. This means we
  40  * can pass the mount options to bch2_fs_alloc() as a whole struct, and then only
  41  * apply the options from that struct that are defined.
  42  */
  43
  44 /* dummy option, for options that aren't stored in the superblock */
  45 LE64_BITMASK(NO_SB_OPT,         struct bch_sb, flags[0], 0, 0);
  46
  47 /* When can be set: */
  48 enum opt_flags {
  49         OPT_FS          = (1 << 0),     /* Filesystem option */
  50         OPT_DEVICE      = (1 << 1),     /* Device option */
  51         OPT_INODE       = (1 << 2),     /* Inode option */
  52         OPT_FORMAT      = (1 << 3),     /* May be specified at format time */
  53         OPT_MOUNT       = (1 << 4),     /* May be specified at mount time */
  54         OPT_RUNTIME     = (1 << 5),     /* May be specified at runtime */
  55         OPT_HUMAN_READABLE = (1 << 6),
  56         OPT_MUST_BE_POW_2 = (1 << 7),   /* Must be power of 2 */
  57         OPT_SB_FIELD_SECTORS = (1 << 8),/* Superblock field is >> 9 of actual value */
  58         OPT_SB_FIELD_ILOG2 = (1 << 9),  /* Superblock field is ilog2 of actual value */
  59 };
  60
  61 enum opt_type {
  62         BCH_OPT_BOOL,
  63         BCH_OPT_UINT,
  64         BCH_OPT_STR,
  65         BCH_OPT_FN,
  66 };
  67
  68 /**
  69  * x(name, shortopt, type, in mem type, mode, sb_opt)
  70  *
  71  * @name        - name of mount option, sysfs attribute, and struct bch_opts
  72  *                member
  73  *
  74  * @mode        - when opt may be set
  75  *
  76  * @sb_option   - name of corresponding superblock option
  77  *
  78  * @type        - one of OPT_BOOL, OPT_UINT, OPT_STR
  79  */
  80
  81 /*
  82  * XXX: add fields for
  83  *  - default value
  84  *  - helptext
  85  */
  86
  87 #ifdef __KERNEL__
  88 #define RATELIMIT_ERRORS_DEFAULT true
  89 #else
  90 #define RATELIMIT_ERRORS_DEFAULT false
  91 #endif
  92
  93 #define BCH_OPTS()                                                      \
  94         x(block_size,                   u16,                            \
  95           OPT_FS|OPT_FORMAT|                                            \
  96           OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS,    \
  97           OPT_UINT(512, 1U << 16),                                      \
  98           BCH_SB_BLOCK_SIZE,            8,                              \
  99           "size",       NULL)                                           \
 100         x(btree_node_size,              u32,                            \
 101           OPT_FS|OPT_FORMAT|                                            \
 102           OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS,    \
 103           OPT_UINT(512, 1U << 20),                                      \
 104           BCH_SB_BTREE_NODE_SIZE,       512,                            \
 105           "size",       "Btree node size, default 256k")                \
 106         x(errors,                       u8,                             \
 107           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 108           OPT_STR(bch2_error_actions),                                  \
 109           BCH_SB_ERROR_ACTION,          BCH_ON_ERROR_ro,                \
 110           NULL,         "Action to take on filesystem error")           \
 111         x(metadata_replicas,            u8,                             \
 112           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 113           OPT_UINT(1, BCH_REPLICAS_MAX),                                \
 114           BCH_SB_META_REPLICAS_WANT,    1,                              \
 115           "#",          "Number of metadata replicas")                  \
 116         x(data_replicas,                u8,                             \
 117           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 118           OPT_UINT(1, BCH_REPLICAS_MAX),                                \
 119           BCH_SB_DATA_REPLICAS_WANT,    1,                              \
 120           "#",          "Number of data replicas")                      \
 121         x(metadata_replicas_required, u8,                               \
 122           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 123           OPT_UINT(1, BCH_REPLICAS_MAX),                                \
 124           BCH_SB_META_REPLICAS_REQ,     1,                              \
 125           "#",          NULL)                                           \
 126         x(data_replicas_required,       u8,                             \
 127           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 128           OPT_UINT(1, BCH_REPLICAS_MAX),                                \
 129           BCH_SB_DATA_REPLICAS_REQ,     1,                              \
 130           "#",          NULL)                                           \
 131         x(encoded_extent_max,           u32,                            \
 132           OPT_FS|OPT_FORMAT|                                            \
 133           OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS|OPT_SB_FIELD_ILOG2,\
 134           OPT_UINT(4096, 2U << 20),                                     \
 135           BCH_SB_ENCODED_EXTENT_MAX_BITS, 64 << 10,                     \
 136           "size",       "Maximum size of checksummed/compressed extents")\
 137         x(metadata_checksum,            u8,                             \
 138           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 139           OPT_STR(bch2_csum_opts),                                      \
 140           BCH_SB_META_CSUM_TYPE,        BCH_CSUM_OPT_crc32c,            \
 141           NULL,         NULL)                                           \
 142         x(data_checksum,                u8,                             \
 143           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 144           OPT_STR(bch2_csum_opts),                                      \
 145           BCH_SB_DATA_CSUM_TYPE,        BCH_CSUM_OPT_crc32c,            \
 146           NULL,         NULL)                                           \
 147         x(compression,                  u8,                             \
 148           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 149           OPT_STR(bch2_compression_opts),                               \
 150           BCH_SB_COMPRESSION_TYPE,      BCH_COMPRESSION_OPT_none,       \
 151           NULL,         NULL)                                           \
 152         x(background_compression,       u8,                             \
 153           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 154           OPT_STR(bch2_compression_opts),                               \
 155           BCH_SB_BACKGROUND_COMPRESSION_TYPE,BCH_COMPRESSION_OPT_none,  \
 156           NULL,         NULL)                                           \
 157         x(str_hash,                     u8,                             \
 158           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 159           OPT_STR(bch2_str_hash_opts),                                  \
 160           BCH_SB_STR_HASH_TYPE,         BCH_STR_HASH_OPT_siphash,       \
 161           NULL,         "Hash function for directory entries and xattrs")\
 162         x(metadata_target,              u16,                            \
 163           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 164           OPT_FN(bch2_opt_target),                                      \
 165           BCH_SB_METADATA_TARGET,       0,                              \
 166           "(target)",   "Device or disk group for metadata writes")     \
 167         x(foreground_target,            u16,                            \
 168           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 169           OPT_FN(bch2_opt_target),                                      \
 170           BCH_SB_FOREGROUND_TARGET,     0,                              \
 171           "(target)",   "Device or disk group for foreground writes")   \
 172         x(background_target,            u16,                            \
 173           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 174           OPT_FN(bch2_opt_target),                                      \
 175           BCH_SB_BACKGROUND_TARGET,     0,                              \
 176           "(target)",   "Device or disk group to move data to in the background")\
 177         x(promote_target,               u16,                            \
 178           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 179           OPT_FN(bch2_opt_target),                                      \
 180           BCH_SB_PROMOTE_TARGET,        0,                              \
 181           "(target)",   "Device or disk group to promote data to on read")\
 182         x(erasure_code,                 u16,                            \
 183           OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,            \
 184           OPT_BOOL(),                                                   \
 185           BCH_SB_ERASURE_CODE,          false,                          \
 186           NULL,         "Enable erasure coding (DO NOT USE YET)")       \
 187         x(inodes_32bit,                 u8,                             \
 188           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 189           OPT_BOOL(),                                                   \
 190           BCH_SB_INODE_32BIT,           true,                           \
 191           NULL,         "Constrain inode numbers to 32 bits")           \
 192         x(shard_inode_numbers,          u8,                             \
 193           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 194           OPT_BOOL(),                                                   \
 195           BCH_SB_SHARD_INUMS,           true,                           \
 196           NULL,         "Shard new inode numbers by CPU id")            \
 197         x(inodes_use_key_cache, u8,                                     \
 198           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 199           OPT_BOOL(),                                                   \
 200           BCH_SB_INODES_USE_KEY_CACHE,  true,                           \
 201           NULL,         "Use the btree key cache for the inodes btree") \
 202         x(btree_node_mem_ptr_optimization, u8,                          \
 203           OPT_FS|OPT_MOUNT|OPT_RUNTIME,                                 \
 204           OPT_BOOL(),                                                   \
 205           NO_SB_OPT,                    true,                           \
 206           NULL,         "Stash pointer to in memory btree node in btree ptr")\
 207         x(gc_reserve_percent,           u8,                             \
 208           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 209           OPT_UINT(5, 21),                                              \
 210           BCH_SB_GC_RESERVE,            8,                              \
 211           "%",          "Percentage of disk space to reserve for copygc")\
 212         x(gc_reserve_bytes,             u64,                            \
 213           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME|                      \
 214           OPT_HUMAN_READABLE|OPT_SB_FIELD_SECTORS,                      \
 215           OPT_UINT(0, U64_MAX),                                         \
 216           BCH_SB_GC_RESERVE_BYTES,      0,                              \
 217           "%",          "Amount of disk space to reserve for copygc\n"  \
 218                         "Takes precedence over gc_reserve_percent if set")\
 219         x(root_reserve_percent,         u8,                             \
 220           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 221           OPT_UINT(0, 100),                                             \
 222           BCH_SB_ROOT_RESERVE,          0,                              \
 223           "%",          "Percentage of disk space to reserve for superuser")\
 224         x(wide_macs,                    u8,                             \
 225           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 226           OPT_BOOL(),                                                   \
 227           BCH_SB_128_BIT_MACS,          false,                          \
 228           NULL,         "Store full 128 bits of cryptographic MACs, instead of 80")\
 229         x(inline_data,                  u8,                             \
 230           OPT_FS|OPT_MOUNT|OPT_RUNTIME,                                 \
 231           OPT_BOOL(),                                                   \
 232           NO_SB_OPT,                    true,                           \
 233           NULL,         "Enable inline data extents")                   \
 234         x(acl,                          u8,                             \
 235           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 236           OPT_BOOL(),                                                   \
 237           BCH_SB_POSIX_ACL,             true,                           \
 238           NULL,         "Enable POSIX acls")                            \
 239         x(usrquota,                     u8,                             \
 240           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 241           OPT_BOOL(),                                                   \
 242           BCH_SB_USRQUOTA,              false,                          \
 243           NULL,         "Enable user quotas")                           \
 244         x(grpquota,                     u8,                             \
 245           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 246           OPT_BOOL(),                                                   \
 247           BCH_SB_GRPQUOTA,              false,                          \
 248           NULL,         "Enable group quotas")                          \
 249         x(prjquota,                     u8,                             \
 250           OPT_FS|OPT_FORMAT|OPT_MOUNT,                                  \
 251           OPT_BOOL(),                                                   \
 252           BCH_SB_PRJQUOTA,              false,                          \
 253           NULL,         "Enable project quotas")                        \
 254         x(degraded,                     u8,                             \
 255           OPT_FS|OPT_MOUNT,                                             \
 256           OPT_BOOL(),                                                   \
 257           NO_SB_OPT,                    false,                          \
 258           NULL,         "Allow mounting in degraded mode")              \
 259         x(very_degraded,                u8,                             \
 260           OPT_FS|OPT_MOUNT,                                             \
 261           OPT_BOOL(),                                                   \
 262           NO_SB_OPT,                    false,                          \
 263           NULL,         "Allow mounting in when data will be missing")  \
 264         x(discard,                      u8,                             \
 265           OPT_FS|OPT_MOUNT|OPT_DEVICE,                                  \
 266           OPT_BOOL(),                                                   \
 267           NO_SB_OPT,                    false,                          \
 268           NULL,         "Enable discard/TRIM support")                  \
 269         x(verbose,                      u8,                             \
 270           OPT_FS|OPT_MOUNT,                                             \
 271           OPT_BOOL(),                                                   \
 272           NO_SB_OPT,                    false,                          \
 273           NULL,         "Extra debugging information during mount/recovery")\
 274         x(journal_flush_delay,          u32,                            \
 275           OPT_FS|OPT_MOUNT|OPT_RUNTIME,                                 \
 276           OPT_UINT(0, U32_MAX),                                         \
 277           BCH_SB_JOURNAL_FLUSH_DELAY,   1000,                           \
 278           NULL,         "Delay in milliseconds before automatic journal commits")\
 279         x(journal_flush_disabled,       u8,                             \
 280           OPT_FS|OPT_MOUNT|OPT_RUNTIME,                                 \
 281           OPT_BOOL(),                                                   \
 282           BCH_SB_JOURNAL_FLUSH_DISABLED,false,                          \
 283           NULL,         "Disable journal flush on sync/fsync\n"         \
 284                         "If enabled, writes can be lost, but only since the\n"\
 285                         "last journal write (default 1 second)")        \
 286         x(journal_reclaim_delay,        u32,                            \
 287           OPT_FS|OPT_MOUNT|OPT_RUNTIME,                                 \
 288           OPT_UINT(0, U32_MAX),                                         \
 289           BCH_SB_JOURNAL_RECLAIM_DELAY, 100,                            \
 290           NULL,         "Delay in milliseconds before automatic journal reclaim")\
 291         x(fsck,                         u8,                             \
 292           OPT_FS|OPT_MOUNT,                                             \
 293           OPT_BOOL(),                                                   \
 294           NO_SB_OPT,                    false,                          \
 295           NULL,         "Run fsck on mount")                            \
 296         x(fix_errors,                   u8,                             \
 297           OPT_FS|OPT_MOUNT,                                             \
 298           OPT_BOOL(),                                                   \
 299           NO_SB_OPT,                    false,                          \
 300           NULL,         "Fix errors during fsck without asking")        \
 301         x(ratelimit_errors,             u8,                             \
 302           OPT_FS|OPT_MOUNT,                                             \
 303           OPT_BOOL(),                                                   \
 304           NO_SB_OPT,                    RATELIMIT_ERRORS_DEFAULT,       \
 305           NULL,         "Ratelimit error messages during fsck")         \
 306         x(nochanges,                    u8,                             \
 307           OPT_FS|OPT_MOUNT,                                             \
 308           OPT_BOOL(),                                                   \
 309           NO_SB_OPT,                    false,                          \
 310           NULL,         "Super read only mode - no writes at all will be issued,\n"\
 311                         "even if we have to replay the journal")        \
 312         x(norecovery,                   u8,                             \
 313           OPT_FS|OPT_MOUNT,                                             \
 314           OPT_BOOL(),                                                   \
 315           NO_SB_OPT,                    false,                          \
 316           NULL,         "Don't replay the journal")                     \
 317         x(rebuild_replicas,             u8,                             \
 318           OPT_FS|OPT_MOUNT,                                             \
 319           OPT_BOOL(),                                                   \
 320           NO_SB_OPT,                    false,                          \
 321           NULL,         "Rebuild the superblock replicas section")      \
 322         x(keep_journal,                 u8,                             \
 323           0,                                                            \
 324           OPT_BOOL(),                                                   \
 325           NO_SB_OPT,                    false,                          \
 326           NULL,         "Don't free journal entries/keys after startup")\
 327         x(read_entire_journal,          u8,                             \
 328           0,                                                            \
 329           OPT_BOOL(),                                                   \
 330           NO_SB_OPT,                    false,                          \
 331           NULL,         "Read all journal entries, not just dirty ones")\
 332         x(journal_transaction_names,    u8,                             \
 333           OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME,                      \
 334           OPT_BOOL(),                                                   \
 335           BCH_SB_JOURNAL_TRANSACTION_NAMES, false,                      \
 336           NULL,         "Log transaction function names in journal")    \
 337         x(noexcl,                       u8,                             \
 338           OPT_FS|OPT_MOUNT,                                             \
 339           OPT_BOOL(),                                                   \
 340           NO_SB_OPT,                    false,                          \
 341           NULL,         "Don't open device in exclusive mode")          \
 342         x(sb,                           u64,                            \
 343           OPT_MOUNT,                                                    \
 344           OPT_UINT(0, S64_MAX),                                         \
 345           NO_SB_OPT,                    BCH_SB_SECTOR,                  \
 346           "offset",     "Sector offset of superblock")                  \
 347         x(read_only,                    u8,                             \
 348           OPT_FS,                                                       \
 349           OPT_BOOL(),                                                   \
 350           NO_SB_OPT,                    false,                          \
 351           NULL,         NULL)                                           \
 352         x(nostart,                      u8,                             \
 353           0,                                                            \
 354           OPT_BOOL(),                                                   \
 355           NO_SB_OPT,                    false,                          \
 356           NULL,         "Don\'t start filesystem, only open devices")   \
 357         x(reconstruct_alloc,            u8,                             \
 358           OPT_FS|OPT_MOUNT,                                             \
 359           OPT_BOOL(),                                                   \
 360           NO_SB_OPT,                    false,                          \
 361           NULL,         "Reconstruct alloc btree")                      \
 362         x(version_upgrade,              u8,                             \
 363           OPT_FS|OPT_MOUNT,                                             \
 364           OPT_BOOL(),                                                   \
 365           NO_SB_OPT,                    false,                          \
 366           NULL,         "Set superblock to latest version,\n"           \
 367                         "allowing any new features to be used")         \
 368         x(project,                      u8,                             \
 369           OPT_INODE,                                                    \
 370           OPT_BOOL(),                                                   \
 371           NO_SB_OPT,                    false,                          \
 372           NULL,         NULL)                                           \
 373         x(fs_size,                      u64,                            \
 374           OPT_DEVICE,                                                   \
 375           OPT_UINT(0, S64_MAX),                                         \
 376           NO_SB_OPT,                    0,                              \
 377           "size",       "Size of filesystem on device")                 \
 378         x(bucket,                       u32,                            \
 379           OPT_DEVICE,                                                   \
 380           OPT_UINT(0, S64_MAX),                                         \
 381           NO_SB_OPT,                    0,                              \
 382           "size",       "Size of filesystem on device")                 \
 383         x(durability,                   u8,                             \
 384           OPT_DEVICE,                                                   \
 385           OPT_UINT(0, BCH_REPLICAS_MAX),                                \
 386           NO_SB_OPT,                    1,                              \
 387           "n",          "Data written to this device will be considered\n"\
 388                         "to have already been replicated n times")
 389
 390 struct bch_opts {
 391 #define x(_name, _bits, ...)    unsigned _name##_defined:1;
 392         BCH_OPTS()
 393 #undef x
 394
 395 #define x(_name, _bits, ...)    _bits   _name;
 396         BCH_OPTS()
 397 #undef x
 398 };
 399
 400 static const struct bch_opts bch2_opts_default = {
 401 #define x(_name, _bits, _mode, _type, _sb_opt, _default, ...)           \
 402         ._name##_defined = true,                                        \
 403         ._name = _default,                                              \
 404
 405         BCH_OPTS()
 406 #undef x
 407 };
 408
 409 #define opt_defined(_opts, _name)       ((_opts)._name##_defined)
 410
 411 #define opt_get(_opts, _name)                                           \
 412         (opt_defined(_opts, _name) ? (_opts)._name : bch2_opts_default._name)
 413
 414 #define opt_set(_opts, _name, _v)                                       \
 415 do {                                                                    \
 416         (_opts)._name##_defined = true;                                 \
 417         (_opts)._name = _v;                                             \
 418 } while (0)
 419
 420 static inline struct bch_opts bch2_opts_empty(void)
 421 {
 422         return (struct bch_opts) { 0 };
 423 }
 424
 425 void bch2_opts_apply(struct bch_opts *, struct bch_opts);
 426
 427 enum bch_opt_id {
 428 #define x(_name, ...)   Opt_##_name,
 429         BCH_OPTS()
 430 #undef x
 431         bch2_opts_nr
 432 };
 433
 434 struct bch_fs;
 435 struct printbuf;
 436
 437 struct bch_option {
 438         struct attribute        attr;
 439         u64                     (*get_sb)(const struct bch_sb *);
 440         void                    (*set_sb)(struct bch_sb *, u64);
 441         enum opt_type           type;
 442         enum opt_flags          flags;
 443         u64                     min, max;
 444
 445         union {
 446         struct {
 447         };
 448         struct {
 449                 const char * const *choices;
 450         };
 451         struct {
 452                 int (*parse)(struct bch_fs *, const char *, u64 *);
 453                 void (*to_text)(struct printbuf *, struct bch_fs *, u64);
 454         };
 455         };
 456
 457         const char              *hint;
 458         const char              *help;
 459
 460 };
 461
 462 extern const struct bch_option bch2_opt_table[];
 463
 464 bool bch2_opt_defined_by_id(const struct bch_opts *, enum bch_opt_id);
 465 u64 bch2_opt_get_by_id(const struct bch_opts *, enum bch_opt_id);
 466 void bch2_opt_set_by_id(struct bch_opts *, enum bch_opt_id, u64);
 467
 468 int bch2_opts_from_sb(struct bch_opts *, struct bch_sb *);
 469 void __bch2_opt_set_sb(struct bch_sb *, const struct bch_option *, u64);
 470 void bch2_opt_set_sb(struct bch_fs *, const struct bch_option *, u64);
 471
 472 int bch2_opt_lookup(const char *);
 473 int bch2_opt_parse(struct bch_fs *, const char *, const struct bch_option *,
 474                    const char *, u64 *);
 475
 476 #define OPT_SHOW_FULL_LIST      (1 << 0)
 477 #define OPT_SHOW_MOUNT_STYLE    (1 << 1)
 478
 479 void bch2_opt_to_text(struct printbuf *, struct bch_fs *,
 480                       const struct bch_option *, u64, unsigned);
 481
 482 int bch2_opt_check_may_set(struct bch_fs *, int, u64);
 483 int bch2_opts_check_may_set(struct bch_fs *);
 484 int bch2_parse_mount_opts(struct bch_fs *, struct bch_opts *, char *);
 485
 486 /* inode opts: */
 487
 488 struct bch_io_opts {
 489 #define x(_name, _bits) unsigned _name##_defined:1;
 490         BCH_INODE_OPTS()
 491 #undef x
 492
 493 #define x(_name, _bits) u##_bits _name;
 494         BCH_INODE_OPTS()
 495 #undef x
 496 };
 497
 498 struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts);
 499 struct bch_opts bch2_inode_opts_to_opts(struct bch_io_opts);
 500 void bch2_io_opts_apply(struct bch_io_opts *, struct bch_io_opts);
 501 bool bch2_opt_is_inode_opt(enum bch_opt_id);
 502
 503 #endif /* _BCACHEFS_OPTS_H */