1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * Copyright (C) 2018-2023 Oracle.  All Rights Reserved.
  4 * Author: Darrick J. Wong <djwong@kernel.org>
  5 */
  6#ifndef __XFS_SCRUB_REPAIR_H__
  7#define __XFS_SCRUB_REPAIR_H__
  8
  9#include "xfs_quota_defs.h"
 10
 11struct xchk_stats_run;
 12
 13static inline int xrep_notsupported(struct xfs_scrub *sc)
 14{
 15	return -EOPNOTSUPP;
 16}
 17
 18#ifdef CONFIG_XFS_ONLINE_REPAIR
 19
 20/*
 21 * This is the maximum number of deferred extent freeing item extents (EFIs)
 22 * that we'll attach to a transaction without rolling the transaction to avoid
 23 * overrunning a tr_itruncate reservation.
 24 */
 25#define XREP_MAX_ITRUNCATE_EFIS	(128)
 26
 27
 28/* Repair helpers */
 29
 30int xrep_attempt(struct xfs_scrub *sc, struct xchk_stats_run *run);
 31bool xrep_will_attempt(struct xfs_scrub *sc);
 32void xrep_failure(struct xfs_mount *mp);
 33int xrep_roll_ag_trans(struct xfs_scrub *sc);
 34int xrep_roll_trans(struct xfs_scrub *sc);
 35int xrep_defer_finish(struct xfs_scrub *sc);
 36bool xrep_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks,
 37		enum xfs_ag_resv_type type);
 38xfs_extlen_t xrep_calc_ag_resblks(struct xfs_scrub *sc);
 39
 40static inline int
 41xrep_trans_commit(
 42	struct xfs_scrub	*sc)
 43{
 44	int error = xfs_trans_commit(sc->tp);
 45
 46	sc->tp = NULL;
 47	return error;
 48}
 49
 50struct xbitmap;
 51struct xagb_bitmap;
 52struct xfsb_bitmap;
 53
 54int xrep_fix_freelist(struct xfs_scrub *sc, bool can_shrink);
 55
 56struct xrep_find_ag_btree {
 57	/* in: rmap owner of the btree we're looking for */
 58	uint64_t			rmap_owner;
 59
 60	/* in: buffer ops */
 61	const struct xfs_buf_ops	*buf_ops;
 62
 63	/* in: maximum btree height */
 64	unsigned int			maxlevels;
 65
 66	/* out: the highest btree block found and the tree height */
 67	xfs_agblock_t			root;
 68	unsigned int			height;
 69};
 70
 71int xrep_find_ag_btree_roots(struct xfs_scrub *sc, struct xfs_buf *agf_bp,
 72		struct xrep_find_ag_btree *btree_info, struct xfs_buf *agfl_bp);
 73
 74#ifdef CONFIG_XFS_QUOTA
 75void xrep_force_quotacheck(struct xfs_scrub *sc, xfs_dqtype_t type);
 76int xrep_ino_dqattach(struct xfs_scrub *sc);
 77#else
 78# define xrep_force_quotacheck(sc, type)	((void)0)
 79# define xrep_ino_dqattach(sc)			(0)
 80#endif /* CONFIG_XFS_QUOTA */
 81
 82int xrep_ino_ensure_extent_count(struct xfs_scrub *sc, int whichfork,
 83		xfs_extnum_t nextents);
 84int xrep_reset_perag_resv(struct xfs_scrub *sc);
 85int xrep_bmap(struct xfs_scrub *sc, int whichfork, bool allow_unwritten);
 86int xrep_metadata_inode_forks(struct xfs_scrub *sc);
 87
 88/* Repair setup functions */
 89int xrep_setup_ag_allocbt(struct xfs_scrub *sc);
 90
 91struct xfs_imap;
 92int xrep_setup_inode(struct xfs_scrub *sc, const struct xfs_imap *imap);
 93
 94void xrep_ag_btcur_init(struct xfs_scrub *sc, struct xchk_ag *sa);
 95int xrep_ag_init(struct xfs_scrub *sc, struct xfs_perag *pag,
 96		struct xchk_ag *sa);
 97
 98/* Metadata revalidators */
 99
100int xrep_revalidate_allocbt(struct xfs_scrub *sc);
101int xrep_revalidate_iallocbt(struct xfs_scrub *sc);
102
103/* Metadata repairers */
104
105int xrep_probe(struct xfs_scrub *sc);
106int xrep_superblock(struct xfs_scrub *sc);
107int xrep_agf(struct xfs_scrub *sc);
108int xrep_agfl(struct xfs_scrub *sc);
109int xrep_agi(struct xfs_scrub *sc);
110int xrep_allocbt(struct xfs_scrub *sc);
111int xrep_iallocbt(struct xfs_scrub *sc);
112int xrep_refcountbt(struct xfs_scrub *sc);
113int xrep_inode(struct xfs_scrub *sc);
114int xrep_bmap_data(struct xfs_scrub *sc);
115int xrep_bmap_attr(struct xfs_scrub *sc);
116int xrep_bmap_cow(struct xfs_scrub *sc);
117
118#ifdef CONFIG_XFS_RT
119int xrep_rtbitmap(struct xfs_scrub *sc);
120#else
121# define xrep_rtbitmap			xrep_notsupported
122#endif /* CONFIG_XFS_RT */
123
124#ifdef CONFIG_XFS_QUOTA
125int xrep_quota(struct xfs_scrub *sc);
126#else
127# define xrep_quota			xrep_notsupported
128#endif /* CONFIG_XFS_QUOTA */
129
130int xrep_reinit_pagf(struct xfs_scrub *sc);
131int xrep_reinit_pagi(struct xfs_scrub *sc);
132
133#else
134
135#define xrep_ino_dqattach(sc)	(0)
136#define xrep_will_attempt(sc)	(false)
137
138static inline int
139xrep_attempt(
140	struct xfs_scrub	*sc,
141	struct xchk_stats_run	*run)
142{
143	return -EOPNOTSUPP;
144}
145
146static inline void xrep_failure(struct xfs_mount *mp) {}
147
148static inline xfs_extlen_t
149xrep_calc_ag_resblks(
150	struct xfs_scrub	*sc)
151{
152	return 0;
153}
154
155static inline int
156xrep_reset_perag_resv(
157	struct xfs_scrub	*sc)
158{
159	if (!(sc->flags & XREP_RESET_PERAG_RESV))
160		return 0;
161
162	ASSERT(0);
163	return -EOPNOTSUPP;
164}
165
166/* repair setup functions for no-repair */
167static inline int
168xrep_setup_nothing(
169	struct xfs_scrub	*sc)
170{
171	return 0;
172}
173#define xrep_setup_ag_allocbt		xrep_setup_nothing
174
175#define xrep_setup_inode(sc, imap)	((void)0)
176
177#define xrep_revalidate_allocbt		(NULL)
178#define xrep_revalidate_iallocbt	(NULL)
179
180#define xrep_probe			xrep_notsupported
181#define xrep_superblock			xrep_notsupported
182#define xrep_agf			xrep_notsupported
183#define xrep_agfl			xrep_notsupported
184#define xrep_agi			xrep_notsupported
185#define xrep_allocbt			xrep_notsupported
186#define xrep_iallocbt			xrep_notsupported
187#define xrep_refcountbt			xrep_notsupported
188#define xrep_inode			xrep_notsupported
189#define xrep_bmap_data			xrep_notsupported
190#define xrep_bmap_attr			xrep_notsupported
191#define xrep_bmap_cow			xrep_notsupported
192#define xrep_rtbitmap			xrep_notsupported
193#define xrep_quota			xrep_notsupported
194
195#endif /* CONFIG_XFS_ONLINE_REPAIR */
196
197#endif	/* __XFS_SCRUB_REPAIR_H__ */