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 */ 14 static inline bool 15 xchk_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 34 int xchk_trans_alloc(struct xfs_scrub *sc, uint resblks); 35 bool xchk_process_error(struct xfs_scrub *sc, xfs_agnumber_t agno, 36 xfs_agblock_t bno, int *error); 37 bool xchk_fblock_process_error(struct xfs_scrub *sc, int whichfork, 38 xfs_fileoff_t offset, int *error); 39 40 bool xchk_xref_process_error(struct xfs_scrub *sc, 41 xfs_agnumber_t agno, xfs_agblock_t bno, int *error); 42 bool xchk_fblock_xref_process_error(struct xfs_scrub *sc, 43 int whichfork, xfs_fileoff_t offset, int *error); 44 45 void xchk_block_set_preen(struct xfs_scrub *sc, 46 struct xfs_buf *bp); 47 void xchk_ino_set_preen(struct xfs_scrub *sc, xfs_ino_t ino); 48 49 void xchk_set_corrupt(struct xfs_scrub *sc); 50 void xchk_block_set_corrupt(struct xfs_scrub *sc, 51 struct xfs_buf *bp); 52 void xchk_ino_set_corrupt(struct xfs_scrub *sc, xfs_ino_t ino); 53 void xchk_fblock_set_corrupt(struct xfs_scrub *sc, int whichfork, 54 xfs_fileoff_t offset); 55 56 void xchk_block_xref_set_corrupt(struct xfs_scrub *sc, 57 struct xfs_buf *bp); 58 void xchk_ino_xref_set_corrupt(struct xfs_scrub *sc, 59 xfs_ino_t ino); 60 void xchk_fblock_xref_set_corrupt(struct xfs_scrub *sc, 61 int whichfork, xfs_fileoff_t offset); 62 63 void xchk_ino_set_warning(struct xfs_scrub *sc, xfs_ino_t ino); 64 void xchk_fblock_set_warning(struct xfs_scrub *sc, int whichfork, 65 xfs_fileoff_t offset); 66 67 void xchk_set_incomplete(struct xfs_scrub *sc); 68 int xchk_checkpoint_log(struct xfs_mount *mp); 69 70 /* Are we set up for a cross-referencing check? */ 71 bool xchk_should_check_xref(struct xfs_scrub *sc, int *error, 72 struct xfs_btree_cur **curpp); 73 74 /* Setup functions */ 75 int xchk_setup_fs(struct xfs_scrub *sc); 76 int xchk_setup_ag_allocbt(struct xfs_scrub *sc); 77 int xchk_setup_ag_iallocbt(struct xfs_scrub *sc); 78 int xchk_setup_ag_rmapbt(struct xfs_scrub *sc); 79 int xchk_setup_ag_refcountbt(struct xfs_scrub *sc); 80 int xchk_setup_inode(struct xfs_scrub *sc); 81 int xchk_setup_inode_bmap(struct xfs_scrub *sc); 82 int xchk_setup_inode_bmap_data(struct xfs_scrub *sc); 83 int xchk_setup_directory(struct xfs_scrub *sc); 84 int xchk_setup_xattr(struct xfs_scrub *sc); 85 int xchk_setup_symlink(struct xfs_scrub *sc); 86 int xchk_setup_parent(struct xfs_scrub *sc); 87 #ifdef CONFIG_XFS_RT 88 int xchk_setup_rt(struct xfs_scrub *sc); 89 #else 90 static inline int 91 xchk_setup_rt(struct xfs_scrub *sc) 92 { 93 return -ENOENT; 94 } 95 #endif 96 #ifdef CONFIG_XFS_QUOTA 97 int xchk_setup_quota(struct xfs_scrub *sc); 98 #else 99 static inline int 100 xchk_setup_quota(struct xfs_scrub *sc) 101 { 102 return -ENOENT; 103 } 104 #endif 105 int xchk_setup_fscounters(struct xfs_scrub *sc); 106 107 void xchk_ag_free(struct xfs_scrub *sc, struct xchk_ag *sa); 108 int 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 */ 116 static inline int 117 xchk_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 } 126 127 int xchk_ag_read_headers(struct xfs_scrub *sc, xfs_agnumber_t agno, 128 struct xchk_ag *sa); 129 void xchk_ag_btcur_free(struct xchk_ag *sa); 130 void xchk_ag_btcur_init(struct xfs_scrub *sc, struct xchk_ag *sa); 131 int 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); 133 134 int xchk_setup_ag_btree(struct xfs_scrub *sc, bool force_log); 135 int xchk_get_inode(struct xfs_scrub *sc); 136 int xchk_setup_inode_contents(struct xfs_scrub *sc, unsigned int resblks); 137 void 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 */ 143 static 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 } 148 149 int xchk_metadata_inode_forks(struct xfs_scrub *sc); 150 int xchk_ilock_inverted(struct xfs_inode *ip, uint lock_mode); 151 void xchk_stop_reaping(struct xfs_scrub *sc); 152 void xchk_start_reaping(struct xfs_scrub *sc); 153 154 #endif /* __XFS_SCRUB_COMMON_H__ */ 155