fs/xfs/scrub/common.h

   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 void xchk_perag_get(struct xfs_mount *mp, struct xchk_ag *sa);
 111 int xchk_ag_read_headers(struct xfs_scrub *sc, xfs_agnumber_t agno,
 112                 struct xchk_ag *sa);
 113 void xchk_ag_btcur_free(struct xchk_ag *sa);
 114 void xchk_ag_btcur_init(struct xfs_scrub *sc, struct xchk_ag *sa);
 115 int xchk_count_rmap_ownedby_ag(struct xfs_scrub *sc, struct xfs_btree_cur *cur,
 116                 const struct xfs_owner_info *oinfo, xfs_filblks_t *blocks);
 117
 118 int xchk_setup_ag_btree(struct xfs_scrub *sc, bool force_log);
 119 int xchk_get_inode(struct xfs_scrub *sc);
 120 int xchk_setup_inode_contents(struct xfs_scrub *sc, unsigned int resblks);
 121 void xchk_buffer_recheck(struct xfs_scrub *sc, struct xfs_buf *bp);
 122
 123 /*
 124  * Don't bother cross-referencing if we already found corruption or cross
 125  * referencing discrepancies.
 126  */
 127 static inline bool xchk_skip_xref(struct xfs_scrub_metadata *sm)
 128 {
 129         return sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT |
 130                                XFS_SCRUB_OFLAG_XCORRUPT);
 131 }
 132
 133 int xchk_metadata_inode_forks(struct xfs_scrub *sc);
 134 int xchk_ilock_inverted(struct xfs_inode *ip, uint lock_mode);
 135 void xchk_stop_reaping(struct xfs_scrub *sc);
 136 void xchk_start_reaping(struct xfs_scrub *sc);
 137
 138 #endif  /* __XFS_SCRUB_COMMON_H__ */