move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / c_src / libbcachefs / disk_groups.h

diff --git a/c_src/libbcachefs/disk_groups.h b/c_src/libbcachefs/disk_groups.h
new file mode 100644 (file)
index 0000000..441826f
--- /dev/null
+++ b/c_src/libbcachefs/disk_groups.h
@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_DISK_GROUPS_H
+#define _BCACHEFS_DISK_GROUPS_H
+
+#include "disk_groups_types.h"
+
+extern const struct bch_sb_field_ops bch_sb_field_ops_disk_groups;
+
+static inline unsigned disk_groups_nr(struct bch_sb_field_disk_groups *groups)
+{
+       return groups
+               ? (vstruct_end(&groups->field) -
+                  (void *) &groups->entries[0]) / sizeof(struct bch_disk_group)
+               : 0;
+}
+
+struct target {
+       enum {
+               TARGET_NULL,
+               TARGET_DEV,
+               TARGET_GROUP,
+       }                       type;
+       union {
+               unsigned        dev;
+               unsigned        group;
+       };
+};
+
+#define TARGET_DEV_START       1
+#define TARGET_GROUP_START     (256 + TARGET_DEV_START)
+
+static inline u16 dev_to_target(unsigned dev)
+{
+       return TARGET_DEV_START + dev;
+}
+
+static inline u16 group_to_target(unsigned group)
+{
+       return TARGET_GROUP_START + group;
+}
+
+static inline struct target target_decode(unsigned target)
+{
+       if (target >= TARGET_GROUP_START)
+               return (struct target) {
+                       .type   = TARGET_GROUP,
+                       .group  = target - TARGET_GROUP_START
+               };
+
+       if (target >= TARGET_DEV_START)
+               return (struct target) {
+                       .type   = TARGET_DEV,
+                       .group  = target - TARGET_DEV_START
+               };
+
+       return (struct target) { .type = TARGET_NULL };
+}
+
+const struct bch_devs_mask *bch2_target_to_mask(struct bch_fs *, unsigned);
+
+static inline struct bch_devs_mask target_rw_devs(struct bch_fs *c,
+                                                 enum bch_data_type data_type,
+                                                 u16 target)
+{
+       struct bch_devs_mask devs = c->rw_devs[data_type];
+       const struct bch_devs_mask *t = bch2_target_to_mask(c, target);
+
+       if (t)
+               bitmap_and(devs.d, devs.d, t->d, BCH_SB_MEMBERS_MAX);
+       return devs;
+}
+
+static inline bool bch2_target_accepts_data(struct bch_fs *c,
+                                           enum bch_data_type data_type,
+                                           u16 target)
+{
+       struct bch_devs_mask rw_devs = target_rw_devs(c, data_type, target);
+       return !bitmap_empty(rw_devs.d, BCH_SB_MEMBERS_MAX);
+}
+
+bool bch2_dev_in_target(struct bch_fs *, unsigned, unsigned);
+
+int bch2_disk_path_find(struct bch_sb_handle *, const char *);
+
+/* Exported for userspace bcachefs-tools: */
+int bch2_disk_path_find_or_create(struct bch_sb_handle *, const char *);
+
+void bch2_disk_path_to_text(struct printbuf *, struct bch_fs *, unsigned);
+void bch2_disk_path_to_text_sb(struct printbuf *, struct bch_sb *, unsigned);
+
+void bch2_target_to_text(struct printbuf *out, struct bch_fs *, unsigned);
+
+int bch2_opt_target_parse(struct bch_fs *, const char *, u64 *, struct printbuf *);
+void bch2_opt_target_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *, u64);
+
+#define bch2_opt_target (struct bch_opt_fn) {          \
+       .parse          = bch2_opt_target_parse,        \
+       .to_text        = bch2_opt_target_to_text,      \
+}
+
+int bch2_sb_disk_groups_to_cpu(struct bch_fs *);
+
+int __bch2_dev_group_set(struct bch_fs *, struct bch_dev *, const char *);
+int bch2_dev_group_set(struct bch_fs *, struct bch_dev *, const char *);
+
+const char *bch2_sb_validate_disk_groups(struct bch_sb *,
+                                        struct bch_sb_field *);
+
+void bch2_disk_groups_to_text(struct printbuf *, struct bch_fs *);
+
+#endif /* _BCACHEFS_DISK_GROUPS_H */