| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 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__ */ |