mirror of
https://github.com/koverstreet/bcachefs-tools.git
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139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
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* Author: Kent Overstreet <kmo@daterainc.com>
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*
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* GPLv2
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*/
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#ifndef _BCACHE_H
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#define _BCACHE_H
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#include <linux/bcache.h>
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#include <dirent.h>
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typedef __u8 u8;
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typedef __u16 u16;
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typedef __u32 u32;
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typedef __u64 u64;
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typedef __s8 s8;
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typedef __s16 s16;
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typedef __s32 s32;
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typedef __s64 s64;
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#define SB_START (SB_SECTOR * 512)
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#define MAX_PATH 256
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#define MAX_DEVS MAX_CACHES_PER_SET
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#define max(x, y) ({ \
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typeof(x) _max1 = (x); \
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typeof(y) _max2 = (y); \
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(void) (&_max1 == &_max2); \
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_max1 > _max2 ? _max1 : _max2; })
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#define __bkey_idx(_set, _offset) \
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((_set)->_data + (_offset))
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#define bkey_idx(_set, _offset) \
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((typeof(&(_set)->start[0])) __bkey_idx((_set), (_offset)))
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#define bkey_next(_k) \
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((typeof(_k)) __bkey_idx(_k, (_k)->u64s))
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#define __bset_bkey_last(_set) \
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__bkey_idx((_set), (_set)->keys)
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#define bset_bkey_last(_set) \
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bkey_idx((_set), (_set)->keys)
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extern const char * const cache_state[];
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extern const char * const replacement_policies[];
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extern const char * const csum_types[];
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extern const char * const bdev_cache_mode[];
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extern const char * const bdev_state[];
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ssize_t read_string_list(const char *, const char * const[]);
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ssize_t read_string_list_or_die(const char *, const char * const[],
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const char *);
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void print_string_list(const char * const[], size_t);
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uint64_t bch_checksum(unsigned, const void *, size_t);
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uint64_t getblocks(int);
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uint64_t hatoi(const char *);
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unsigned hatoi_validate(const char *, const char *);
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void write_backingdev_sb(int, unsigned, unsigned *, bool, uint64_t,
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const char *, uuid_le);
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int dev_open(const char *, bool);
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void write_cache_sbs(int *, struct cache_sb *, unsigned, unsigned *, int);
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void next_cache_device(struct cache_sb *, unsigned, int, unsigned, bool);
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unsigned get_blocksize(const char *);
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long strtoul_or_die(const char *, size_t, const char *);
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void show_super_backingdev(struct cache_sb *, bool);
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void show_super_cache(struct cache_sb *, bool);
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enum sysfs_attr {SET_ATTR, CACHE_ATTR, INTERNAL_ATTR};
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static const char *set_attrs[] = {
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"btree_flush_delay",
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"btree_scan_ratelimit",
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"bucket_reserve_percent",
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"cache_reserve_percent",
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"checksum_type",
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"congested_read_threshold_us",
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"congested_write_threshold_us",
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"data_replicas",
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"errors",
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"foreground_target_percent",
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"gc_sector_percent",
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"journal_delay_ms",
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"meta_replicas",
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"sector_reserve_percent",
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"tiering_percent",
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NULL
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};
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static const char *cache_attrs[] = {
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"cache_replacement_policy",
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"discard",
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"state",
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"tier",
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NULL
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};
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static const char *internal_attrs[] = {
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"btree_shrinker_disabled",
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"copy_gc_enabled",
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"foreground_write_rate",
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"tiering_enabled",
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"tiering_rate",
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NULL
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};
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enum sysfs_attr sysfs_attr_type(char *attr);
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void sysfs_attr_list();
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struct cache_sb *query_dev(char *, bool, bool, bool, char *dev_uuid);
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char *list_cachesets(char *, bool);
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char *parse_array_to_list(char *const *);
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char *register_bcache(char *const *);
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char *unregister_bcache(char *const *);
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char *probe(char *, int);
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char *read_stat_dir(DIR *, char *, char *, char *);
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char *find_matching_uuid(char *, char *, const char*);
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char *add_devices(char *const *);
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char *remove_device(const char *, bool);
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char *bcache_get_capacity(const char *, const char *, bool);
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char *dev_name(const char *);
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char *device_set_failed(const char *dev_uuid);
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#define csum_set(i, type) \
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({ \
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void *start = ((void *) (i)) + sizeof(uint64_t); \
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void *end = __bset_bkey_last(i); \
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\
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bch_checksum(type, start, end - start); \
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})
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#endif
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