forked from Minki/linux
64b12563b2
Create some helper functions that we'll use later to deal with problems we might encounter while cross referencing metadata with other metadata. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
159 lines
5.7 KiB
C
159 lines
5.7 KiB
C
/*
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* Copyright (C) 2017 Oracle. All Rights Reserved.
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*
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __XFS_SCRUB_COMMON_H__
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#define __XFS_SCRUB_COMMON_H__
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/*
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* We /could/ terminate a scrub/repair operation early. If we're not
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* in a good place to continue (fatal signal, etc.) then bail out.
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* Note that we're careful not to make any judgements about *error.
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*/
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static inline bool
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xfs_scrub_should_terminate(
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struct xfs_scrub_context *sc,
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int *error)
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{
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if (fatal_signal_pending(current)) {
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if (*error == 0)
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*error = -EAGAIN;
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return true;
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}
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return false;
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}
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/*
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* Grab an empty transaction so that we can re-grab locked buffers if
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* one of our btrees turns out to be cyclic.
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*/
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static inline int
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xfs_scrub_trans_alloc(
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struct xfs_scrub_metadata *sm,
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struct xfs_mount *mp,
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struct xfs_trans **tpp)
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{
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return xfs_trans_alloc_empty(mp, tpp);
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}
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bool xfs_scrub_process_error(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
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xfs_agblock_t bno, int *error);
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bool xfs_scrub_fblock_process_error(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset, int *error);
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bool xfs_scrub_xref_process_error(struct xfs_scrub_context *sc,
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xfs_agnumber_t agno, xfs_agblock_t bno, int *error);
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bool xfs_scrub_fblock_xref_process_error(struct xfs_scrub_context *sc,
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int whichfork, xfs_fileoff_t offset, int *error);
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void xfs_scrub_block_set_preen(struct xfs_scrub_context *sc,
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struct xfs_buf *bp);
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void xfs_scrub_ino_set_preen(struct xfs_scrub_context *sc, xfs_ino_t ino,
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struct xfs_buf *bp);
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void xfs_scrub_block_set_corrupt(struct xfs_scrub_context *sc,
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struct xfs_buf *bp);
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void xfs_scrub_ino_set_corrupt(struct xfs_scrub_context *sc, xfs_ino_t ino,
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struct xfs_buf *bp);
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void xfs_scrub_fblock_set_corrupt(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset);
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void xfs_scrub_block_xref_set_corrupt(struct xfs_scrub_context *sc,
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struct xfs_buf *bp);
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void xfs_scrub_ino_xref_set_corrupt(struct xfs_scrub_context *sc, xfs_ino_t ino,
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struct xfs_buf *bp);
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void xfs_scrub_fblock_xref_set_corrupt(struct xfs_scrub_context *sc,
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int whichfork, xfs_fileoff_t offset);
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void xfs_scrub_ino_set_warning(struct xfs_scrub_context *sc, xfs_ino_t ino,
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struct xfs_buf *bp);
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void xfs_scrub_fblock_set_warning(struct xfs_scrub_context *sc, int whichfork,
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xfs_fileoff_t offset);
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void xfs_scrub_set_incomplete(struct xfs_scrub_context *sc);
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int xfs_scrub_checkpoint_log(struct xfs_mount *mp);
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/* Are we set up for a cross-referencing check? */
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bool xfs_scrub_should_check_xref(struct xfs_scrub_context *sc, int *error,
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struct xfs_btree_cur **curpp);
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/* Setup functions */
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int xfs_scrub_setup_fs(struct xfs_scrub_context *sc, struct xfs_inode *ip);
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int xfs_scrub_setup_ag_allocbt(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_ag_iallocbt(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_ag_rmapbt(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_ag_refcountbt(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_inode(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_inode_bmap(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_inode_bmap_data(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_directory(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_xattr(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_symlink(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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int xfs_scrub_setup_parent(struct xfs_scrub_context *sc,
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struct xfs_inode *ip);
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#ifdef CONFIG_XFS_RT
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int xfs_scrub_setup_rt(struct xfs_scrub_context *sc, struct xfs_inode *ip);
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#else
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static inline int
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xfs_scrub_setup_rt(struct xfs_scrub_context *sc, struct xfs_inode *ip)
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{
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return -ENOENT;
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}
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#endif
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#ifdef CONFIG_XFS_QUOTA
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int xfs_scrub_setup_quota(struct xfs_scrub_context *sc, struct xfs_inode *ip);
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#else
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static inline int
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xfs_scrub_setup_quota(struct xfs_scrub_context *sc, struct xfs_inode *ip)
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{
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return -ENOENT;
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}
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#endif
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void xfs_scrub_ag_free(struct xfs_scrub_context *sc, struct xfs_scrub_ag *sa);
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int xfs_scrub_ag_init(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
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struct xfs_scrub_ag *sa);
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int xfs_scrub_ag_read_headers(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
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struct xfs_buf **agi, struct xfs_buf **agf,
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struct xfs_buf **agfl);
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void xfs_scrub_ag_btcur_free(struct xfs_scrub_ag *sa);
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int xfs_scrub_ag_btcur_init(struct xfs_scrub_context *sc,
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struct xfs_scrub_ag *sa);
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int xfs_scrub_walk_agfl(struct xfs_scrub_context *sc,
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int (*fn)(struct xfs_scrub_context *, xfs_agblock_t bno,
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void *),
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void *priv);
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int xfs_scrub_setup_ag_btree(struct xfs_scrub_context *sc,
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struct xfs_inode *ip, bool force_log);
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int xfs_scrub_get_inode(struct xfs_scrub_context *sc, struct xfs_inode *ip_in);
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int xfs_scrub_setup_inode_contents(struct xfs_scrub_context *sc,
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struct xfs_inode *ip, unsigned int resblks);
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#endif /* __XFS_SCRUB_COMMON_H__ */
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