summaryrefslogtreecommitdiffstats
path: root/fs/xfs/scrub/scrub.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--fs/xfs/scrub/scrub.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/fs/xfs/scrub/scrub.h b/fs/xfs/scrub/scrub.h
new file mode 100644
index 000000000..af323b229
--- /dev/null
+++ b/fs/xfs/scrub/scrub.h
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <darrick.wong@oracle.com>
+ */
+#ifndef __XFS_SCRUB_SCRUB_H__
+#define __XFS_SCRUB_SCRUB_H__
+
+struct xfs_scrub;
+
+/* Type info and names for the scrub types. */
+enum xchk_type {
+ ST_NONE = 1, /* disabled */
+ ST_PERAG, /* per-AG metadata */
+ ST_FS, /* per-FS metadata */
+ ST_INODE, /* per-inode metadata */
+};
+
+struct xchk_meta_ops {
+ /* Acquire whatever resources are needed for the operation. */
+ int (*setup)(struct xfs_scrub *,
+ struct xfs_inode *);
+
+ /* Examine metadata for errors. */
+ int (*scrub)(struct xfs_scrub *);
+
+ /* Repair or optimize the metadata. */
+ int (*repair)(struct xfs_scrub *);
+
+ /* Decide if we even have this piece of metadata. */
+ bool (*has)(struct xfs_sb *);
+
+ /* type describing required/allowed inputs */
+ enum xchk_type type;
+};
+
+/* Buffer pointers and btree cursors for an entire AG. */
+struct xchk_ag {
+ xfs_agnumber_t agno;
+ struct xfs_perag *pag;
+
+ /* AG btree roots */
+ struct xfs_buf *agf_bp;
+ struct xfs_buf *agfl_bp;
+ struct xfs_buf *agi_bp;
+
+ /* AG btrees */
+ struct xfs_btree_cur *bno_cur;
+ struct xfs_btree_cur *cnt_cur;
+ struct xfs_btree_cur *ino_cur;
+ struct xfs_btree_cur *fino_cur;
+ struct xfs_btree_cur *rmap_cur;
+ struct xfs_btree_cur *refc_cur;
+};
+
+struct xfs_scrub {
+ /* General scrub state. */
+ struct xfs_mount *mp;
+ struct xfs_scrub_metadata *sm;
+ const struct xchk_meta_ops *ops;
+ struct xfs_trans *tp;
+ struct xfs_inode *ip;
+ void *buf;
+ uint ilock_flags;
+ bool try_harder;
+ bool has_quotaofflock;
+
+ /* State tracking for single-AG operations. */
+ struct xchk_ag sa;
+};
+
+/* Metadata scrubbers */
+int xchk_tester(struct xfs_scrub *sc);
+int xchk_superblock(struct xfs_scrub *sc);
+int xchk_agf(struct xfs_scrub *sc);
+int xchk_agfl(struct xfs_scrub *sc);
+int xchk_agi(struct xfs_scrub *sc);
+int xchk_bnobt(struct xfs_scrub *sc);
+int xchk_cntbt(struct xfs_scrub *sc);
+int xchk_inobt(struct xfs_scrub *sc);
+int xchk_finobt(struct xfs_scrub *sc);
+int xchk_rmapbt(struct xfs_scrub *sc);
+int xchk_refcountbt(struct xfs_scrub *sc);
+int xchk_inode(struct xfs_scrub *sc);
+int xchk_bmap_data(struct xfs_scrub *sc);
+int xchk_bmap_attr(struct xfs_scrub *sc);
+int xchk_bmap_cow(struct xfs_scrub *sc);
+int xchk_directory(struct xfs_scrub *sc);
+int xchk_xattr(struct xfs_scrub *sc);
+int xchk_symlink(struct xfs_scrub *sc);
+int xchk_parent(struct xfs_scrub *sc);
+#ifdef CONFIG_XFS_RT
+int xchk_rtbitmap(struct xfs_scrub *sc);
+int xchk_rtsummary(struct xfs_scrub *sc);
+#else
+static inline int
+xchk_rtbitmap(struct xfs_scrub *sc)
+{
+ return -ENOENT;
+}
+static inline int
+xchk_rtsummary(struct xfs_scrub *sc)
+{
+ return -ENOENT;
+}
+#endif
+#ifdef CONFIG_XFS_QUOTA
+int xchk_quota(struct xfs_scrub *sc);
+#else
+static inline int
+xchk_quota(struct xfs_scrub *sc)
+{
+ return -ENOENT;
+}
+#endif
+
+/* cross-referencing helpers */
+void xchk_xref_is_used_space(struct xfs_scrub *sc, xfs_agblock_t agbno,
+ xfs_extlen_t len);
+void xchk_xref_is_not_inode_chunk(struct xfs_scrub *sc, xfs_agblock_t agbno,
+ xfs_extlen_t len);
+void xchk_xref_is_inode_chunk(struct xfs_scrub *sc, xfs_agblock_t agbno,
+ xfs_extlen_t len);
+void xchk_xref_is_owned_by(struct xfs_scrub *sc, xfs_agblock_t agbno,
+ xfs_extlen_t len, struct xfs_owner_info *oinfo);
+void xchk_xref_is_not_owned_by(struct xfs_scrub *sc, xfs_agblock_t agbno,
+ xfs_extlen_t len, struct xfs_owner_info *oinfo);
+void xchk_xref_has_no_owner(struct xfs_scrub *sc, xfs_agblock_t agbno,
+ xfs_extlen_t len);
+void xchk_xref_is_cow_staging(struct xfs_scrub *sc, xfs_agblock_t bno,
+ xfs_extlen_t len);
+void xchk_xref_is_not_shared(struct xfs_scrub *sc, xfs_agblock_t bno,
+ xfs_extlen_t len);
+#ifdef CONFIG_XFS_RT
+void xchk_xref_is_used_rt_space(struct xfs_scrub *sc, xfs_rtblock_t rtbno,
+ xfs_extlen_t len);
+#else
+# define xchk_xref_is_used_rt_space(sc, rtbno, len) do { } while (0)
+#endif
+
+#endif /* __XFS_SCRUB_SCRUB_H__ */