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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BCACHEFS_DISK_GROUPS_H3#define _BCACHEFS_DISK_GROUPS_H4 5#include "disk_groups_types.h"6 7extern const struct bch_sb_field_ops bch_sb_field_ops_disk_groups;8 9static inline unsigned disk_groups_nr(struct bch_sb_field_disk_groups *groups)10{11 return groups12 ? (vstruct_end(&groups->field) -13 (void *) &groups->entries[0]) / sizeof(struct bch_disk_group)14 : 0;15}16 17struct target {18 enum {19 TARGET_NULL,20 TARGET_DEV,21 TARGET_GROUP,22 } type;23 union {24 unsigned dev;25 unsigned group;26 };27};28 29#define TARGET_DEV_START 130#define TARGET_GROUP_START (256 + TARGET_DEV_START)31 32static inline u16 dev_to_target(unsigned dev)33{34 return TARGET_DEV_START + dev;35}36 37static inline u16 group_to_target(unsigned group)38{39 return TARGET_GROUP_START + group;40}41 42static inline struct target target_decode(unsigned target)43{44 if (target >= TARGET_GROUP_START)45 return (struct target) {46 .type = TARGET_GROUP,47 .group = target - TARGET_GROUP_START48 };49 50 if (target >= TARGET_DEV_START)51 return (struct target) {52 .type = TARGET_DEV,53 .group = target - TARGET_DEV_START54 };55 56 return (struct target) { .type = TARGET_NULL };57}58 59const struct bch_devs_mask *bch2_target_to_mask(struct bch_fs *, unsigned);60 61static inline struct bch_devs_mask target_rw_devs(struct bch_fs *c,62 enum bch_data_type data_type,63 u16 target)64{65 struct bch_devs_mask devs = c->rw_devs[data_type];66 const struct bch_devs_mask *t = bch2_target_to_mask(c, target);67 68 if (t)69 bitmap_and(devs.d, devs.d, t->d, BCH_SB_MEMBERS_MAX);70 return devs;71}72 73static inline bool bch2_target_accepts_data(struct bch_fs *c,74 enum bch_data_type data_type,75 u16 target)76{77 struct bch_devs_mask rw_devs = target_rw_devs(c, data_type, target);78 return !bitmap_empty(rw_devs.d, BCH_SB_MEMBERS_MAX);79}80 81bool bch2_dev_in_target(struct bch_fs *, unsigned, unsigned);82 83int bch2_disk_path_find(struct bch_sb_handle *, const char *);84 85/* Exported for userspace bcachefs-tools: */86int bch2_disk_path_find_or_create(struct bch_sb_handle *, const char *);87 88void bch2_disk_path_to_text(struct printbuf *, struct bch_fs *, unsigned);89void bch2_disk_path_to_text_sb(struct printbuf *, struct bch_sb *, unsigned);90 91void bch2_target_to_text(struct printbuf *out, struct bch_fs *, unsigned);92 93int bch2_opt_target_parse(struct bch_fs *, const char *, u64 *, struct printbuf *);94void bch2_opt_target_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *, u64);95 96#define bch2_opt_target (struct bch_opt_fn) { \97 .parse = bch2_opt_target_parse, \98 .to_text = bch2_opt_target_to_text, \99}100 101int bch2_sb_disk_groups_to_cpu(struct bch_fs *);102 103int __bch2_dev_group_set(struct bch_fs *, struct bch_dev *, const char *);104int bch2_dev_group_set(struct bch_fs *, struct bch_dev *, const char *);105 106const char *bch2_sb_validate_disk_groups(struct bch_sb *,107 struct bch_sb_field *);108 109void bch2_disk_groups_to_text(struct printbuf *, struct bch_fs *);110 111#endif /* _BCACHEFS_DISK_GROUPS_H */112