/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _BCACHEFS_OPTS_H #define _BCACHEFS_OPTS_H #include #include #include #include #include "bcachefs_format.h" struct bch_fs; extern const char * const bch2_error_actions[]; extern const char * const bch2_fsck_fix_opts[]; extern const char * const bch2_version_upgrade_opts[]; extern const char * const bch2_sb_features[]; extern const char * const bch2_sb_compat[]; extern const char * const __bch2_btree_ids[]; extern const char * const bch2_csum_opts[]; extern const char * const bch2_compression_opts[]; extern const char * const __bch2_str_hash_types[]; extern const char * const bch2_str_hash_opts[]; extern const char * const __bch2_data_types[]; extern const char * const bch2_member_states[]; extern const char * const bch2_d_types[]; void bch2_prt_jset_entry_type(struct printbuf *, enum bch_jset_entry_type); void bch2_prt_fs_usage_type(struct printbuf *, enum bch_fs_usage_type); void bch2_prt_data_type(struct printbuf *, enum bch_data_type); void bch2_prt_csum_type(struct printbuf *, enum bch_csum_type); void bch2_prt_compression_type(struct printbuf *, enum bch_compression_type); void bch2_prt_str_hash_type(struct printbuf *, enum bch_str_hash_type); static inline const char *bch2_d_type_str(unsigned d_type) { return (d_type < BCH_DT_MAX ? bch2_d_types[d_type] : NULL) ?: "(bad d_type)"; } /* * Mount options; we also store defaults in the superblock. * * Also exposed via sysfs: if an option is writeable, and it's also stored in * the superblock, changing it via sysfs (currently? might change this) also * updates the superblock. * * We store options as signed integers, where -1 means undefined. This means we * can pass the mount options to bch2_fs_alloc() as a whole struct, and then only * apply the options from that struct that are defined. */ /* dummy option, for options that aren't stored in the superblock */ u64 BCH2_NO_SB_OPT(const struct bch_sb *); void SET_BCH2_NO_SB_OPT(struct bch_sb *, u64); /* When can be set: */ enum opt_flags { OPT_FS = BIT(0), /* Filesystem option */ OPT_DEVICE = BIT(1), /* Device option */ OPT_INODE = BIT(2), /* Inode option */ OPT_FORMAT = BIT(3), /* May be specified at format time */ OPT_MOUNT = BIT(4), /* May be specified at mount time */ OPT_RUNTIME = BIT(5), /* May be specified at runtime */ OPT_HUMAN_READABLE = BIT(6), OPT_MUST_BE_POW_2 = BIT(7), /* Must be power of 2 */ OPT_SB_FIELD_SECTORS = BIT(8), /* Superblock field is >> 9 of actual value */ OPT_SB_FIELD_ILOG2 = BIT(9), /* Superblock field is ilog2 of actual value */ OPT_SB_FIELD_ONE_BIAS = BIT(10), /* 0 means default value */ OPT_HIDDEN = BIT(11), }; enum opt_type { BCH_OPT_BOOL, BCH_OPT_UINT, BCH_OPT_STR, BCH_OPT_BITFIELD, BCH_OPT_FN, }; struct bch_opt_fn { int (*parse)(struct bch_fs *, const char *, u64 *, struct printbuf *); void (*to_text)(struct printbuf *, struct bch_fs *, struct bch_sb *, u64); int (*validate)(u64, struct printbuf *); }; /** * x(name, shortopt, type, in mem type, mode, sb_opt) * * @name - name of mount option, sysfs attribute, and struct bch_opts * member * * @mode - when opt may be set * * @sb_option - name of corresponding superblock option * * @type - one of OPT_BOOL, OPT_UINT, OPT_STR */ /* * XXX: add fields for * - default value * - helptext */ #ifdef __KERNEL__ #define RATELIMIT_ERRORS_DEFAULT true #else #define RATELIMIT_ERRORS_DEFAULT false #endif #ifdef CONFIG_BCACHEFS_DEBUG #define BCACHEFS_VERBOSE_DEFAULT true #else #define BCACHEFS_VERBOSE_DEFAULT false #endif #define BCH_FIX_ERRORS_OPTS() \ x(exit, 0) \ x(yes, 1) \ x(no, 2) \ x(ask, 3) enum fsck_err_opts { #define x(t, n) FSCK_FIX_##t, BCH_FIX_ERRORS_OPTS() #undef x }; #define BCH_OPTS() \ x(block_size, u16, \ OPT_FS|OPT_FORMAT| \ OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \ OPT_UINT(512, 1U << 16), \ BCH_SB_BLOCK_SIZE, 8, \ "size", NULL) \ x(btree_node_size, u32, \ OPT_FS|OPT_FORMAT| \ OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \ OPT_UINT(512, 1U << 20), \ BCH_SB_BTREE_NODE_SIZE, 512, \ "size", "Btree node size, default 256k") \ x(errors, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_STR(bch2_error_actions), \ BCH_SB_ERROR_ACTION, BCH_ON_ERROR_fix_safe, \ NULL, "Action to take on filesystem error") \ x(metadata_replicas, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(1, BCH_REPLICAS_MAX), \ BCH_SB_META_REPLICAS_WANT, 1, \ "#", "Number of metadata replicas") \ x(data_replicas, u8, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(1, BCH_REPLICAS_MAX), \ BCH_SB_DATA_REPLICAS_WANT, 1, \ "#", "Number of data replicas") \ x(metadata_replicas_required, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_UINT(1, BCH_REPLICAS_MAX), \ BCH_SB_META_REPLICAS_REQ, 1, \ "#", NULL) \ x(data_replicas_required, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_UINT(1, BCH_REPLICAS_MAX), \ BCH_SB_DATA_REPLICAS_REQ, 1, \ "#", NULL) \ x(encoded_extent_max, u32, \ OPT_FS|OPT_FORMAT| \ OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS|OPT_SB_FIELD_ILOG2,\ OPT_UINT(4096, 2U << 20), \ BCH_SB_ENCODED_EXTENT_MAX_BITS, 64 << 10, \ "size", "Maximum size of checksummed/compressed extents")\ x(metadata_checksum, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_STR(bch2_csum_opts), \ BCH_SB_META_CSUM_TYPE, BCH_CSUM_OPT_crc32c, \ NULL, NULL) \ x(data_checksum, u8, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_STR(bch2_csum_opts), \ BCH_SB_DATA_CSUM_TYPE, BCH_CSUM_OPT_crc32c, \ NULL, NULL) \ x(compression, u8, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_FN(bch2_opt_compression), \ BCH_SB_COMPRESSION_TYPE, BCH_COMPRESSION_OPT_none, \ NULL, NULL) \ x(background_compression, u8, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_FN(bch2_opt_compression), \ BCH_SB_BACKGROUND_COMPRESSION_TYPE,BCH_COMPRESSION_OPT_none, \ NULL, NULL) \ x(str_hash, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_STR(bch2_str_hash_opts), \ BCH_SB_STR_HASH_TYPE, BCH_STR_HASH_OPT_siphash, \ NULL, "Hash function for directory entries and xattrs")\ x(metadata_target, u16, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_FN(bch2_opt_target), \ BCH_SB_METADATA_TARGET, 0, \ "(target)", "Device or label for metadata writes") \ x(foreground_target, u16, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_FN(bch2_opt_target), \ BCH_SB_FOREGROUND_TARGET, 0, \ "(target)", "Device or label for foreground writes") \ x(background_target, u16, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_FN(bch2_opt_target), \ BCH_SB_BACKGROUND_TARGET, 0, \ "(target)", "Device or label to move data to in the background")\ x(promote_target, u16, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_FN(bch2_opt_target), \ BCH_SB_PROMOTE_TARGET, 0, \ "(target)", "Device or label to promote data to on read") \ x(erasure_code, u16, \ OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_ERASURE_CODE, false, \ NULL, "Enable erasure coding (DO NOT USE YET)") \ x(inodes_32bit, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_INODE_32BIT, true, \ NULL, "Constrain inode numbers to 32 bits") \ x(shard_inode_numbers, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_SHARD_INUMS, true, \ NULL, "Shard new inode numbers by CPU id") \ x(inodes_use_key_cache, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_BOOL(), \ BCH_SB_INODES_USE_KEY_CACHE, true, \ NULL, "Use the btree key cache for the inodes btree") \ x(btree_node_mem_ptr_optimization, u8, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, true, \ NULL, "Stash pointer to in memory btree node in btree ptr")\ x(gc_reserve_percent, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(5, 21), \ BCH_SB_GC_RESERVE, 8, \ "%", "Percentage of disk space to reserve for copygc")\ x(gc_reserve_bytes, u64, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME| \ OPT_HUMAN_READABLE|OPT_SB_FIELD_SECTORS, \ OPT_UINT(0, U64_MAX), \ BCH_SB_GC_RESERVE_BYTES, 0, \ "%", "Amount of disk space to reserve for copygc\n" \ "Takes precedence over gc_reserve_percent if set")\ x(root_reserve_percent, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_UINT(0, 100), \ BCH_SB_ROOT_RESERVE, 0, \ "%", "Percentage of disk space to reserve for superuser")\ x(wide_macs, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_128_BIT_MACS, false, \ NULL, "Store full 128 bits of cryptographic MACs, instead of 80")\ x(inline_data, u8, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, true, \ NULL, "Enable inline data extents") \ x(promote_whole_extents, u8, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_PROMOTE_WHOLE_EXTENTS, true, \ NULL, "Promote whole extents, instead of just part being read")\ x(acl, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_BOOL(), \ BCH_SB_POSIX_ACL, true, \ NULL, "Enable POSIX acls") \ x(usrquota, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_BOOL(), \ BCH_SB_USRQUOTA, false, \ NULL, "Enable user quotas") \ x(grpquota, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_BOOL(), \ BCH_SB_GRPQUOTA, false, \ NULL, "Enable group quotas") \ x(prjquota, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT, \ OPT_BOOL(), \ BCH_SB_PRJQUOTA, false, \ NULL, "Enable project quotas") \ x(degraded, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Allow mounting in degraded mode") \ x(very_degraded, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Allow mounting in when data will be missing") \ x(no_splitbrain_check, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Don't kick drives out when splitbrain detected")\ x(discard, u8, \ OPT_FS|OPT_MOUNT|OPT_DEVICE, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, true, \ NULL, "Enable discard/TRIM support") \ x(verbose, u8, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, BCACHEFS_VERBOSE_DEFAULT, \ NULL, "Extra debugging information during mount/recovery")\ x(journal_flush_delay, u32, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(1, U32_MAX), \ BCH_SB_JOURNAL_FLUSH_DELAY, 1000, \ NULL, "Delay in milliseconds before automatic journal commits")\ x(journal_flush_disabled, u8, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_JOURNAL_FLUSH_DISABLED,false, \ NULL, "Disable journal flush on sync/fsync\n" \ "If enabled, writes can be lost, but only since the\n"\ "last journal write (default 1 second)") \ x(journal_reclaim_delay, u32, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(0, U32_MAX), \ BCH_SB_JOURNAL_RECLAIM_DELAY, 100, \ NULL, "Delay in milliseconds before automatic journal reclaim")\ x(move_bytes_in_flight, u32, \ OPT_HUMAN_READABLE|OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(1024, U32_MAX), \ BCH2_NO_SB_OPT, 1U << 20, \ NULL, "Maximum Amount of IO to keep in flight by the move path")\ x(move_ios_in_flight, u32, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(1, 1024), \ BCH2_NO_SB_OPT, 32, \ NULL, "Maximum number of IOs to keep in flight by the move path")\ x(fsck, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Run fsck on mount") \ x(fsck_memory_usage_percent, u8, \ OPT_FS|OPT_MOUNT, \ OPT_UINT(20, 70), \ BCH2_NO_SB_OPT, 50, \ NULL, "Maximum percentage of system ram fsck is allowed to pin")\ x(fix_errors, u8, \ OPT_FS|OPT_MOUNT, \ OPT_FN(bch2_opt_fix_errors), \ BCH2_NO_SB_OPT, FSCK_FIX_exit, \ NULL, "Fix errors during fsck without asking") \ x(ratelimit_errors, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, RATELIMIT_ERRORS_DEFAULT, \ NULL, "Ratelimit error messages during fsck") \ x(nochanges, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Super read only mode - no writes at all will be issued,\n"\ "even if we have to replay the journal") \ x(norecovery, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Exit recovery immediately prior to journal replay")\ x(recovery_passes, u64, \ OPT_FS|OPT_MOUNT, \ OPT_BITFIELD(bch2_recovery_passes), \ BCH2_NO_SB_OPT, 0, \ NULL, "Recovery passes to run explicitly") \ x(recovery_passes_exclude, u64, \ OPT_FS|OPT_MOUNT, \ OPT_BITFIELD(bch2_recovery_passes), \ BCH2_NO_SB_OPT, 0, \ NULL, "Recovery passes to exclude") \ x(recovery_pass_last, u8, \ OPT_FS|OPT_MOUNT, \ OPT_STR_NOLIMIT(bch2_recovery_passes), \ BCH2_NO_SB_OPT, 0, \ NULL, "Exit recovery after specified pass") \ x(retain_recovery_info, u8, \ 0, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Don't free journal entries/keys, scanned btree nodes after startup")\ x(read_entire_journal, u8, \ 0, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Read all journal entries, not just dirty ones")\ x(read_journal_only, u8, \ 0, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Only read the journal, skip the rest of recovery")\ x(journal_transaction_names, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH_SB_JOURNAL_TRANSACTION_NAMES, true, \ NULL, "Log transaction function names in journal") \ x(allocator_stuck_timeout, u16, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ OPT_UINT(0, U16_MAX), \ BCH_SB_ALLOCATOR_STUCK_TIMEOUT, 30, \ NULL, "Default timeout in seconds for stuck allocator messages")\ x(noexcl, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Don't open device in exclusive mode") \ x(direct_io, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, true, \ NULL, "Use O_DIRECT (userspace only)") \ x(sb, u64, \ OPT_MOUNT, \ OPT_UINT(0, S64_MAX), \ BCH2_NO_SB_OPT, BCH_SB_SECTOR, \ "offset", "Sector offset of superblock") \ x(read_only, u8, \ OPT_FS|OPT_MOUNT|OPT_HIDDEN, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, NULL) \ x(nostart, u8, \ 0, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Don\'t start filesystem, only open devices") \ x(reconstruct_alloc, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Reconstruct alloc btree") \ x(version_upgrade, u8, \ OPT_FS|OPT_MOUNT, \ OPT_STR(bch2_version_upgrade_opts), \ BCH_SB_VERSION_UPGRADE, BCH_VERSION_UPGRADE_compatible, \ NULL, "Set superblock to latest version,\n" \ "allowing any new features to be used") \ x(stdio, u64, \ 0, \ OPT_UINT(0, S64_MAX), \ BCH2_NO_SB_OPT, false, \ NULL, "Pointer to a struct stdio_redirect") \ x(project, u8, \ OPT_INODE, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, NULL) \ x(nocow, u8, \ OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME|OPT_INODE, \ OPT_BOOL(), \ BCH_SB_NOCOW, false, \ NULL, "Nocow mode: Writes will be done in place when possible.\n"\ "Snapshots and reflink will still caused writes to be COW\n"\ "Implicitly disables data checksumming, compression and encryption")\ x(nocow_enabled, u8, \ OPT_FS|OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, true, \ NULL, "Enable nocow mode: enables runtime locking in\n"\ "data move path needed if nocow will ever be in use\n")\ x(no_data_io, u8, \ OPT_MOUNT, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Skip submit_bio() for data reads and writes, " \ "for performance testing purposes") \ x(fs_size, u64, \ OPT_DEVICE, \ OPT_UINT(0, S64_MAX), \ BCH2_NO_SB_OPT, 0, \ "size", "Size of filesystem on device") \ x(bucket, u32, \ OPT_DEVICE, \ OPT_UINT(0, S64_MAX), \ BCH2_NO_SB_OPT, 0, \ "size", "Size of filesystem on device") \ x(durability, u8, \ OPT_DEVICE|OPT_SB_FIELD_ONE_BIAS, \ OPT_UINT(0, BCH_REPLICAS_MAX), \ BCH2_NO_SB_OPT, 1, \ "n", "Data written to this device will be considered\n"\ "to have already been replicated n times") \ x(data_allowed, u8, \ OPT_DEVICE, \ OPT_BITFIELD(__bch2_data_types), \ BCH2_NO_SB_OPT, BIT(BCH_DATA_journal)|BIT(BCH_DATA_btree)|BIT(BCH_DATA_user),\ "types", "Allowed data types for this device: journal, btree, and/or user")\ x(btree_node_prefetch, u8, \ OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ OPT_BOOL(), \ BCH2_NO_SB_OPT, true, \ NULL, "BTREE_ITER_prefetch casuse btree nodes to be\n"\ " prefetched sequentially") #define BCH_DEV_OPT_SETTERS() \ x(discard, BCH_MEMBER_DISCARD) \ x(durability, BCH_MEMBER_DURABILITY) \ x(data_allowed, BCH_MEMBER_DATA_ALLOWED) struct bch_opts { #define x(_name, _bits, ...) unsigned _name##_defined:1; BCH_OPTS() #undef x #define x(_name, _bits, ...) _bits _name; BCH_OPTS() #undef x }; struct bch2_opts_parse { struct bch_opts opts; /* to save opts that can't be parsed before the FS is opened: */ struct printbuf parse_later; }; static const __maybe_unused struct bch_opts bch2_opts_default = { #define x(_name, _bits, _mode, _type, _sb_opt, _default, ...) \ ._name##_defined = true, \ ._name = _default, \ BCH_OPTS() #undef x }; #define opt_defined(_opts, _name) ((_opts)._name##_defined) #define opt_get(_opts, _name) \ (opt_defined(_opts, _name) ? (_opts)._name : bch2_opts_default._name) #define opt_set(_opts, _name, _v) \ do { \ (_opts)._name##_defined = true; \ (_opts)._name = _v; \ } while (0) static inline struct bch_opts bch2_opts_empty(void) { return (struct bch_opts) { 0 }; } void bch2_opts_apply(struct bch_opts *, struct bch_opts); enum bch_opt_id { #define x(_name, ...) Opt_##_name, BCH_OPTS() #undef x bch2_opts_nr }; struct bch_fs; struct printbuf; struct bch_option { struct attribute attr; u64 (*get_sb)(const struct bch_sb *); void (*set_sb)(struct bch_sb *, u64); enum opt_type type; enum opt_flags flags; u64 min, max; const char * const *choices; struct bch_opt_fn fn; const char *hint; const char *help; }; extern const struct bch_option bch2_opt_table[]; bool bch2_opt_defined_by_id(const struct bch_opts *, enum bch_opt_id); u64 bch2_opt_get_by_id(const struct bch_opts *, enum bch_opt_id); void bch2_opt_set_by_id(struct bch_opts *, enum bch_opt_id, u64); u64 bch2_opt_from_sb(struct bch_sb *, enum bch_opt_id); int bch2_opts_from_sb(struct bch_opts *, struct bch_sb *); void __bch2_opt_set_sb(struct bch_sb *, int, const struct bch_option *, u64); struct bch_dev; void bch2_opt_set_sb(struct bch_fs *, struct bch_dev *, const struct bch_option *, u64); int bch2_opt_lookup(const char *); int bch2_opt_validate(const struct bch_option *, u64, struct printbuf *); int bch2_opt_parse(struct bch_fs *, const struct bch_option *, const char *, u64 *, struct printbuf *); #define OPT_SHOW_FULL_LIST (1 << 0) #define OPT_SHOW_MOUNT_STYLE (1 << 1) void bch2_opt_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *, const struct bch_option *, u64, unsigned); void bch2_opts_to_text(struct printbuf *, struct bch_opts, struct bch_fs *, struct bch_sb *, unsigned, unsigned, unsigned); int bch2_opt_check_may_set(struct bch_fs *, int, u64); int bch2_opts_check_may_set(struct bch_fs *); int bch2_parse_one_mount_opt(struct bch_fs *, struct bch_opts *, struct printbuf *, const char *, const char *); int bch2_parse_mount_opts(struct bch_fs *, struct bch_opts *, struct printbuf *, char *); /* inode opts: */ struct bch_io_opts { #define x(_name, _bits) u##_bits _name; BCH_INODE_OPTS() #undef x }; static inline unsigned background_compression(struct bch_io_opts opts) { return opts.background_compression ?: opts.compression; } struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts); bool bch2_opt_is_inode_opt(enum bch_opt_id); #endif /* _BCACHEFS_OPTS_H */