| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _BCACHEFS_SUBVOLUME_TYPES_H |
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| 3 | #define _BCACHEFS_SUBVOLUME_TYPES_H |
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| 4 | |
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| 5 | #include "darray.h" |
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| 6 | |
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| 7 | typedef DARRAY(u32) snapshot_id_list; |
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| 8 | |
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| 9 | #define IS_ANCESTOR_BITMAP 128 |
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| 10 | |
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| 11 | struct snapshot_t { |
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| 12 | u32 parent; |
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| 13 | u32 skip[3]; |
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| 14 | u32 depth; |
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| 15 | u32 children[2]; |
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| 16 | u32 subvol; /* Nonzero only if a subvolume points to this node: */ |
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| 17 | u32 tree; |
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| 18 | u32 equiv; |
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| 19 | unsigned long is_ancestor[BITS_TO_LONGS(IS_ANCESTOR_BITMAP)]; |
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| 20 | }; |
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| 21 | |
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| 22 | struct snapshot_table { |
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| 23 | struct rcu_head rcu; |
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| 24 | size_t nr; |
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| 25 | #ifndef RUST_BINDGEN |
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| 26 | DECLARE_FLEX_ARRAY(struct snapshot_t, s); |
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| 27 | #else |
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| 28 | struct snapshot_t s[0]; |
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| 29 | #endif |
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| 30 | }; |
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| 31 | |
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| 32 | typedef struct { |
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| 33 | u32 subvol; |
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| 34 | u64 inum; |
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| 35 | } subvol_inum; |
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| 36 | |
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| 37 | #endif /* _BCACHEFS_SUBVOLUME_TYPES_H */ |
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| 38 | |
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