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https://github.com/torvalds/linux
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63332394c7
We need to add bounds checking for snapshot table accesses - it turns out there are cases where we do need to use the snapshots table before fsck checks have completed (and indeed, fsck may not have been run). Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
38 lines
721 B
C
38 lines
721 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_SUBVOLUME_TYPES_H
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#define _BCACHEFS_SUBVOLUME_TYPES_H
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#include "darray.h"
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typedef DARRAY(u32) snapshot_id_list;
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#define IS_ANCESTOR_BITMAP 128
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struct snapshot_t {
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u32 parent;
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u32 skip[3];
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u32 depth;
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u32 children[2];
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u32 subvol; /* Nonzero only if a subvolume points to this node: */
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u32 tree;
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u32 equiv;
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unsigned long is_ancestor[BITS_TO_LONGS(IS_ANCESTOR_BITMAP)];
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};
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struct snapshot_table {
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struct rcu_head rcu;
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size_t nr;
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#ifndef RUST_BINDGEN
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DECLARE_FLEX_ARRAY(struct snapshot_t, s);
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#else
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struct snapshot_t s[0];
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#endif
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};
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typedef struct {
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u32 subvol;
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u64 inum;
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} subvol_inum;
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#endif /* _BCACHEFS_SUBVOLUME_TYPES_H */
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