1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _BCACHEFS_SUBVOLUME_TYPES_H
 3#define _BCACHEFS_SUBVOLUME_TYPES_H
 4
 5#include "darray.h"
 6
 7typedef DARRAY(u32) snapshot_id_list;
 8
 9#define IS_ANCESTOR_BITMAP	128
10
11struct snapshot_t {
12	u32			parent;
13	u32			skip[3];
14	u32			depth;
15	u32			children[2];
16	u32			subvol; /* Nonzero only if a subvolume points to this node: */
17	u32			tree;
18	u32			equiv;
19	unsigned long		is_ancestor[BITS_TO_LONGS(IS_ANCESTOR_BITMAP)];
20};
21
22struct snapshot_table {
23#ifndef RUST_BINDGEN
24	DECLARE_FLEX_ARRAY(struct snapshot_t, s);
25#else
26	struct snapshot_t	s[0];
27#endif
28};
29
30typedef struct {
31	u32		subvol;
32	u64		inum;
33} subvol_inum;
34
35#endif /* _BCACHEFS_SUBVOLUME_TYPES_H */