common.h (4994B)
1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (C) 2017 Oracle. All Rights Reserved. 4 * Author: Darrick J. Wong <darrick.wong@oracle.com> 5 */ 6#ifndef __XFS_SCRUB_COMMON_H__ 7#define __XFS_SCRUB_COMMON_H__ 8 9/* 10 * We /could/ terminate a scrub/repair operation early. If we're not 11 * in a good place to continue (fatal signal, etc.) then bail out. 12 * Note that we're careful not to make any judgements about *error. 13 */ 14static inline bool 15xchk_should_terminate( 16 struct xfs_scrub *sc, 17 int *error) 18{ 19 /* 20 * If preemption is disabled, we need to yield to the scheduler every 21 * few seconds so that we don't run afoul of the soft lockup watchdog 22 * or RCU stall detector. 23 */ 24 cond_resched(); 25 26 if (fatal_signal_pending(current)) { 27 if (*error == 0) 28 *error = -EAGAIN; 29 return true; 30 } 31 return false; 32} 33 34int xchk_trans_alloc(struct xfs_scrub *sc, uint resblks); 35bool xchk_process_error(struct xfs_scrub *sc, xfs_agnumber_t agno, 36 xfs_agblock_t bno, int *error); 37bool xchk_fblock_process_error(struct xfs_scrub *sc, int whichfork, 38 xfs_fileoff_t offset, int *error); 39 40bool xchk_xref_process_error(struct xfs_scrub *sc, 41 xfs_agnumber_t agno, xfs_agblock_t bno, int *error); 42bool xchk_fblock_xref_process_error(struct xfs_scrub *sc, 43 int whichfork, xfs_fileoff_t offset, int *error); 44 45void xchk_block_set_preen(struct xfs_scrub *sc, 46 struct xfs_buf *bp); 47void xchk_ino_set_preen(struct xfs_scrub *sc, xfs_ino_t ino); 48 49void xchk_set_corrupt(struct xfs_scrub *sc); 50void xchk_block_set_corrupt(struct xfs_scrub *sc, 51 struct xfs_buf *bp); 52void xchk_ino_set_corrupt(struct xfs_scrub *sc, xfs_ino_t ino); 53void xchk_fblock_set_corrupt(struct xfs_scrub *sc, int whichfork, 54 xfs_fileoff_t offset); 55 56void xchk_block_xref_set_corrupt(struct xfs_scrub *sc, 57 struct xfs_buf *bp); 58void xchk_ino_xref_set_corrupt(struct xfs_scrub *sc, 59 xfs_ino_t ino); 60void xchk_fblock_xref_set_corrupt(struct xfs_scrub *sc, 61 int whichfork, xfs_fileoff_t offset); 62 63void xchk_ino_set_warning(struct xfs_scrub *sc, xfs_ino_t ino); 64void xchk_fblock_set_warning(struct xfs_scrub *sc, int whichfork, 65 xfs_fileoff_t offset); 66 67void xchk_set_incomplete(struct xfs_scrub *sc); 68int xchk_checkpoint_log(struct xfs_mount *mp); 69 70/* Are we set up for a cross-referencing check? */ 71bool xchk_should_check_xref(struct xfs_scrub *sc, int *error, 72 struct xfs_btree_cur **curpp); 73 74/* Setup functions */ 75int xchk_setup_fs(struct xfs_scrub *sc); 76int xchk_setup_ag_allocbt(struct xfs_scrub *sc); 77int xchk_setup_ag_iallocbt(struct xfs_scrub *sc); 78int xchk_setup_ag_rmapbt(struct xfs_scrub *sc); 79int xchk_setup_ag_refcountbt(struct xfs_scrub *sc); 80int xchk_setup_inode(struct xfs_scrub *sc); 81int xchk_setup_inode_bmap(struct xfs_scrub *sc); 82int xchk_setup_inode_bmap_data(struct xfs_scrub *sc); 83int xchk_setup_directory(struct xfs_scrub *sc); 84int xchk_setup_xattr(struct xfs_scrub *sc); 85int xchk_setup_symlink(struct xfs_scrub *sc); 86int xchk_setup_parent(struct xfs_scrub *sc); 87#ifdef CONFIG_XFS_RT 88int xchk_setup_rt(struct xfs_scrub *sc); 89#else 90static inline int 91xchk_setup_rt(struct xfs_scrub *sc) 92{ 93 return -ENOENT; 94} 95#endif 96#ifdef CONFIG_XFS_QUOTA 97int xchk_setup_quota(struct xfs_scrub *sc); 98#else 99static inline int 100xchk_setup_quota(struct xfs_scrub *sc) 101{ 102 return -ENOENT; 103} 104#endif 105int xchk_setup_fscounters(struct xfs_scrub *sc); 106 107void xchk_ag_free(struct xfs_scrub *sc, struct xchk_ag *sa); 108int xchk_ag_init(struct xfs_scrub *sc, xfs_agnumber_t agno, 109 struct xchk_ag *sa); 110 111/* 112 * Grab all AG resources, treating the inability to grab the perag structure as 113 * a fs corruption. This is intended for callers checking an ondisk reference 114 * to a given AG, which means that the AG must still exist. 115 */ 116static inline int 117xchk_ag_init_existing( 118 struct xfs_scrub *sc, 119 xfs_agnumber_t agno, 120 struct xchk_ag *sa) 121{ 122 int error = xchk_ag_init(sc, agno, sa); 123 124 return error == -ENOENT ? -EFSCORRUPTED : error; 125} 126 127int xchk_ag_read_headers(struct xfs_scrub *sc, xfs_agnumber_t agno, 128 struct xchk_ag *sa); 129void xchk_ag_btcur_free(struct xchk_ag *sa); 130void xchk_ag_btcur_init(struct xfs_scrub *sc, struct xchk_ag *sa); 131int xchk_count_rmap_ownedby_ag(struct xfs_scrub *sc, struct xfs_btree_cur *cur, 132 const struct xfs_owner_info *oinfo, xfs_filblks_t *blocks); 133 134int xchk_setup_ag_btree(struct xfs_scrub *sc, bool force_log); 135int xchk_get_inode(struct xfs_scrub *sc); 136int xchk_setup_inode_contents(struct xfs_scrub *sc, unsigned int resblks); 137void xchk_buffer_recheck(struct xfs_scrub *sc, struct xfs_buf *bp); 138 139/* 140 * Don't bother cross-referencing if we already found corruption or cross 141 * referencing discrepancies. 142 */ 143static inline bool xchk_skip_xref(struct xfs_scrub_metadata *sm) 144{ 145 return sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT | 146 XFS_SCRUB_OFLAG_XCORRUPT); 147} 148 149int xchk_metadata_inode_forks(struct xfs_scrub *sc); 150int xchk_ilock_inverted(struct xfs_inode *ip, uint lock_mode); 151void xchk_stop_reaping(struct xfs_scrub *sc); 152void xchk_start_reaping(struct xfs_scrub *sc); 153 154#endif /* __XFS_SCRUB_COMMON_H__ */