--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_OPTS_H
+#define _BCACHEFS_OPTS_H
+
+#include <linux/bug.h>
+#include <linux/log2.h>
+#include <linux/string.h>
+#include <linux/sysfs.h>
+#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_types[];
+extern const char * const bch2_csum_opts[];
+extern const char * const bch2_compression_types[];
+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_jset_entry_types[];
+extern const char * const bch2_fs_usage_types[];
+extern const char * const bch2_d_types[];
+
+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 = (1 << 0), /* Filesystem option */
+ OPT_DEVICE = (1 << 1), /* Device option */
+ OPT_INODE = (1 << 2), /* Inode option */
+ OPT_FORMAT = (1 << 3), /* May be specified at format time */
+ OPT_MOUNT = (1 << 4), /* May be specified at mount time */
+ OPT_RUNTIME = (1 << 5), /* May be specified at runtime */
+ OPT_HUMAN_READABLE = (1 << 6),
+ OPT_MUST_BE_POW_2 = (1 << 7), /* Must be power of 2 */
+ OPT_SB_FIELD_SECTORS = (1 << 8),/* Superblock field is >> 9 of actual value */
+ OPT_SB_FIELD_ILOG2 = (1 << 9), /* Superblock field is ilog2 of actual value */
+};
+
+enum opt_type {
+ BCH_OPT_BOOL,
+ BCH_OPT_UINT,
+ BCH_OPT_STR,
+ 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_ro, \
+ 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(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(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(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, "Don't replay the journal") \
+ x(keep_journal, u8, \
+ 0, \
+ OPT_BOOL(), \
+ BCH2_NO_SB_OPT, false, \
+ NULL, "Don't free journal entries/keys 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(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_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(buckets_nouse, u8, \
+ 0, \
+ OPT_BOOL(), \
+ BCH2_NO_SB_OPT, false, \
+ NULL, "Allocate the buckets_nouse bitmap") \
+ 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_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(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")
+
+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
+};
+
+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 *, const struct bch_option *, u64);
+void bch2_opt_set_sb(struct bch_fs *, 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);
+
+int bch2_opt_check_may_set(struct bch_fs *, int, u64);
+int bch2_opts_check_may_set(struct bch_fs *);
+int bch2_parse_mount_opts(struct bch_fs *, struct bch_opts *, char *);
+
+/* inode opts: */
+
+struct bch_io_opts {
+#define x(_name, _bits) u##_bits _name;
+ BCH_INODE_OPTS()
+#undef x
+};
+
+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 */
projects / bcachefs-tools-debian / blobdiff