xref: /openbmc/linux/fs/xfs/xfs_iwalk.h (revision 5b35d922)
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	(1U << 0)
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__ */
50