1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Copyright (c) 2020-2024 Oracle.  All Rights Reserved.
 4 * Author: Darrick J. Wong <djwong@kernel.org>
 5 */
 6#ifndef __XFS_SCRUB_FINDPARENT_H__
 7#define __XFS_SCRUB_FINDPARENT_H__
 8
 9struct xrep_parent_scan_info {
10	struct xfs_scrub	*sc;
11
12	/* Inode scan cursor. */
13	struct xchk_iscan	iscan;
14
15	/* Hook to capture directory entry updates. */
16	struct xfs_dir_hook	dhook;
17
18	/* Lock protecting parent_ino. */
19	struct mutex		lock;
20
21	/* Parent inode that we've found. */
22	xfs_ino_t		parent_ino;
23
24	bool			lookup_parent;
25};
26
27int __xrep_findparent_scan_start(struct xfs_scrub *sc,
28		struct xrep_parent_scan_info *pscan,
29		notifier_fn_t custom_fn);
30static inline int xrep_findparent_scan_start(struct xfs_scrub *sc,
31		struct xrep_parent_scan_info *pscan)
32{
33	return __xrep_findparent_scan_start(sc, pscan, NULL);
34}
35int xrep_findparent_scan(struct xrep_parent_scan_info *pscan);
36void xrep_findparent_scan_teardown(struct xrep_parent_scan_info *pscan);
37
38static inline void
39xrep_findparent_scan_found(
40	struct xrep_parent_scan_info	*pscan,
41	xfs_ino_t			ino)
42{
43	mutex_lock(&pscan->lock);
44	pscan->parent_ino = ino;
45	mutex_unlock(&pscan->lock);
46}
47
48void xrep_findparent_scan_finish_early(struct xrep_parent_scan_info *pscan,
49		xfs_ino_t ino);
50
51int xrep_findparent_confirm(struct xfs_scrub *sc, xfs_ino_t *parent_ino);
52
53xfs_ino_t xrep_findparent_self_reference(struct xfs_scrub *sc);
54xfs_ino_t xrep_findparent_from_dcache(struct xfs_scrub *sc);
55
56#endif /* __XFS_SCRUB_FINDPARENT_H__ */