fs/xfs/scrub/common.h

   1 /*
   2  * Copyright (C) 2017 Oracle.  All Rights Reserved.
   3  *
   4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it would be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write the Free Software Foundation,
  18  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.
  19  */
  20 #ifndef __XFS_SCRUB_COMMON_H__
  21 #define __XFS_SCRUB_COMMON_H__
  22
  23 /*
  24  * We /could/ terminate a scrub/repair operation early.  If we're not
  25  * in a good place to continue (fatal signal, etc.) then bail out.
  26  * Note that we're careful not to make any judgements about *error.
  27  */
  28 static inline bool
  29 xfs_scrub_should_terminate(
  30         struct xfs_scrub_context        *sc,
  31         int                             *error)
  32 {
  33         if (fatal_signal_pending(current)) {
  34                 if (*error == 0)
  35                         *error = -EAGAIN;
  36                 return true;
  37         }
  38         return false;
  39 }
  40
  41 /*
  42  * Grab an empty transaction so that we can re-grab locked buffers if
  43  * one of our btrees turns out to be cyclic.
  44  */
  45 static inline int
  46 xfs_scrub_trans_alloc(
  47         struct xfs_scrub_metadata       *sm,
  48         struct xfs_mount                *mp,
  49         struct xfs_trans                **tpp)
  50 {
  51         return xfs_trans_alloc_empty(mp, tpp);
  52 }
  53
  54 bool xfs_scrub_process_error(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
  55                 xfs_agblock_t bno, int *error);
  56 bool xfs_scrub_fblock_process_error(struct xfs_scrub_context *sc, int whichfork,
  57                 xfs_fileoff_t offset, int *error);
  58
  59 bool xfs_scrub_xref_process_error(struct xfs_scrub_context *sc,
  60                 xfs_agnumber_t agno, xfs_agblock_t bno, int *error);
  61 bool xfs_scrub_fblock_xref_process_error(struct xfs_scrub_context *sc,
  62                 int whichfork, xfs_fileoff_t offset, int *error);
  63
  64 void xfs_scrub_block_set_preen(struct xfs_scrub_context *sc,
  65                 struct xfs_buf *bp);
  66 void xfs_scrub_ino_set_preen(struct xfs_scrub_context *sc, xfs_ino_t ino,
  67                 struct xfs_buf *bp);
  68
  69 void xfs_scrub_block_set_corrupt(struct xfs_scrub_context *sc,
  70                 struct xfs_buf *bp);
  71 void xfs_scrub_ino_set_corrupt(struct xfs_scrub_context *sc, xfs_ino_t ino,
  72                 struct xfs_buf *bp);
  73 void xfs_scrub_fblock_set_corrupt(struct xfs_scrub_context *sc, int whichfork,
  74                 xfs_fileoff_t offset);
  75
  76 void xfs_scrub_block_xref_set_corrupt(struct xfs_scrub_context *sc,
  77                 struct xfs_buf *bp);
  78 void xfs_scrub_ino_xref_set_corrupt(struct xfs_scrub_context *sc, xfs_ino_t ino,
  79                 struct xfs_buf *bp);
  80 void xfs_scrub_fblock_xref_set_corrupt(struct xfs_scrub_context *sc,
  81                 int whichfork, xfs_fileoff_t offset);
  82
  83 void xfs_scrub_ino_set_warning(struct xfs_scrub_context *sc, xfs_ino_t ino,
  84                 struct xfs_buf *bp);
  85 void xfs_scrub_fblock_set_warning(struct xfs_scrub_context *sc, int whichfork,
  86                 xfs_fileoff_t offset);
  87
  88 void xfs_scrub_set_incomplete(struct xfs_scrub_context *sc);
  89 int xfs_scrub_checkpoint_log(struct xfs_mount *mp);
  90
  91 /* Are we set up for a cross-referencing check? */
  92 bool xfs_scrub_should_check_xref(struct xfs_scrub_context *sc, int *error,
  93                            struct xfs_btree_cur **curpp);
  94
  95 /* Setup functions */
  96 int xfs_scrub_setup_fs(struct xfs_scrub_context *sc, struct xfs_inode *ip);
  97 int xfs_scrub_setup_ag_allocbt(struct xfs_scrub_context *sc,
  98                                struct xfs_inode *ip);
  99 int xfs_scrub_setup_ag_iallocbt(struct xfs_scrub_context *sc,
 100                                 struct xfs_inode *ip);
 101 int xfs_scrub_setup_ag_rmapbt(struct xfs_scrub_context *sc,
 102                               struct xfs_inode *ip);
 103 int xfs_scrub_setup_ag_refcountbt(struct xfs_scrub_context *sc,
 104                                   struct xfs_inode *ip);
 105 int xfs_scrub_setup_inode(struct xfs_scrub_context *sc,
 106                           struct xfs_inode *ip);
 107 int xfs_scrub_setup_inode_bmap(struct xfs_scrub_context *sc,
 108                                struct xfs_inode *ip);
 109 int xfs_scrub_setup_inode_bmap_data(struct xfs_scrub_context *sc,
 110                                     struct xfs_inode *ip);
 111 int xfs_scrub_setup_directory(struct xfs_scrub_context *sc,
 112                               struct xfs_inode *ip);
 113 int xfs_scrub_setup_xattr(struct xfs_scrub_context *sc,
 114                           struct xfs_inode *ip);
 115 int xfs_scrub_setup_symlink(struct xfs_scrub_context *sc,
 116                             struct xfs_inode *ip);
 117 int xfs_scrub_setup_parent(struct xfs_scrub_context *sc,
 118                            struct xfs_inode *ip);
 119 #ifdef CONFIG_XFS_RT
 120 int xfs_scrub_setup_rt(struct xfs_scrub_context *sc, struct xfs_inode *ip);
 121 #else
 122 static inline int
 123 xfs_scrub_setup_rt(struct xfs_scrub_context *sc, struct xfs_inode *ip)
 124 {
 125         return -ENOENT;
 126 }
 127 #endif
 128 #ifdef CONFIG_XFS_QUOTA
 129 int xfs_scrub_setup_quota(struct xfs_scrub_context *sc, struct xfs_inode *ip);
 130 #else
 131 static inline int
 132 xfs_scrub_setup_quota(struct xfs_scrub_context *sc, struct xfs_inode *ip)
 133 {
 134         return -ENOENT;
 135 }
 136 #endif
 137
 138 void xfs_scrub_ag_free(struct xfs_scrub_context *sc, struct xfs_scrub_ag *sa);
 139 int xfs_scrub_ag_init(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
 140                       struct xfs_scrub_ag *sa);
 141 int xfs_scrub_ag_read_headers(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
 142                               struct xfs_buf **agi, struct xfs_buf **agf,
 143                               struct xfs_buf **agfl);
 144 void xfs_scrub_ag_btcur_free(struct xfs_scrub_ag *sa);
 145 int xfs_scrub_ag_btcur_init(struct xfs_scrub_context *sc,
 146                             struct xfs_scrub_ag *sa);
 147 int xfs_scrub_walk_agfl(struct xfs_scrub_context *sc,
 148                         int (*fn)(struct xfs_scrub_context *, xfs_agblock_t bno,
 149                                   void *),
 150                         void *priv);
 151 int xfs_scrub_count_rmap_ownedby_ag(struct xfs_scrub_context *sc,
 152                                     struct xfs_btree_cur *cur,
 153                                     struct xfs_owner_info *oinfo,
 154                                     xfs_filblks_t *blocks);
 155
 156 int xfs_scrub_setup_ag_btree(struct xfs_scrub_context *sc,
 157                              struct xfs_inode *ip, bool force_log);
 158 int xfs_scrub_get_inode(struct xfs_scrub_context *sc, struct xfs_inode *ip_in);
 159 int xfs_scrub_setup_inode_contents(struct xfs_scrub_context *sc,
 160                                    struct xfs_inode *ip, unsigned int resblks);
 161 void xfs_scrub_buffer_recheck(struct xfs_scrub_context *sc, struct xfs_buf *bp);
 162
 163 #endif  /* __XFS_SCRUB_COMMON_H__ */