fs/xfs/xfs_iwalk.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2019 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
   5  */
   6 #ifndef __XFS_IWALK_H__
   7 #define __XFS_IWALK_H__
   8
   9 /*
  10  * Return codes for the inode/inobt walk function are 0 to continue iterating,
  11  * and non-zero to stop iterating.  Any non-zero value will be passed up to the
  12  * iwalk or inobt_walk caller.  The special value -ECANCELED can be used to
  13  * stop iteration, as neither iwalk nor inobt_walk will ever generate that
  14  * error code on their own.
  15  */
  16
  17 /* Walk all inodes in the filesystem starting from @startino. */
  18 typedef int (*xfs_iwalk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
  19                             xfs_ino_t ino, void *data);
  20
  21 int xfs_iwalk(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t startino,
  22                 unsigned int flags, xfs_iwalk_fn iwalk_fn,
  23                 unsigned int inode_records, void *data);
  24 int xfs_iwalk_threaded(struct xfs_mount *mp, xfs_ino_t startino,
  25                 unsigned int flags, xfs_iwalk_fn iwalk_fn,
  26                 unsigned int inode_records, bool poll, void *data);
  27
  28 /* Only iterate inodes within the same AG as @startino. */
  29 #define XFS_IWALK_SAME_AG       (0x1)
  30
  31 #define XFS_IWALK_FLAGS_ALL     (XFS_IWALK_SAME_AG)
  32
  33 /* Walk all inode btree records in the filesystem starting from @startino. */
  34 typedef int (*xfs_inobt_walk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
  35                                  xfs_agnumber_t agno,
  36                                  const struct xfs_inobt_rec_incore *irec,
  37                                  void *data);
  38
  39 int xfs_inobt_walk(struct xfs_mount *mp, struct xfs_trans *tp,
  40                 xfs_ino_t startino, unsigned int flags,
  41                 xfs_inobt_walk_fn inobt_walk_fn, unsigned int inobt_records,
  42                 void *data);
  43
  44 /* Only iterate inobt records within the same AG as @startino. */
  45 #define XFS_INOBT_WALK_SAME_AG  (XFS_IWALK_SAME_AG)
  46
  47 #define XFS_INOBT_WALK_FLAGS_ALL (XFS_INOBT_WALK_SAME_AG)
  48
  49 #endif /* __XFS_IWALK_H__ */