1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. |
4 | */ |
5 | #ifndef __XFS_ITABLE_H__ |
6 | #define __XFS_ITABLE_H__ |
7 | |
8 | /* In-memory representation of a userspace request for batch inode data. */ |
9 | struct xfs_ibulk { |
10 | struct xfs_mount *mp; |
11 | struct mnt_idmap *idmap; |
12 | void __user *ubuffer; /* user output buffer */ |
13 | xfs_ino_t startino; /* start with this inode */ |
14 | unsigned int icount; /* number of elements in ubuffer */ |
15 | unsigned int ocount; /* number of records returned */ |
16 | unsigned int flags; /* see XFS_IBULK_FLAG_* */ |
17 | }; |
18 | |
19 | /* Only iterate within the same AG as startino */ |
20 | #define XFS_IBULK_SAME_AG (1U << 0) |
21 | |
22 | /* Fill out the bs_extents64 field if set. */ |
23 | #define XFS_IBULK_NREXT64 (1U << 1) |
24 | |
25 | /* |
26 | * Advance the user buffer pointer by one record of the given size. If the |
27 | * buffer is now full, return the appropriate error code. |
28 | */ |
29 | static inline int |
30 | xfs_ibulk_advance( |
31 | struct xfs_ibulk *breq, |
32 | size_t bytes) |
33 | { |
34 | char __user *b = breq->ubuffer; |
35 | |
36 | breq->ubuffer = b + bytes; |
37 | breq->ocount++; |
38 | return breq->ocount == breq->icount ? -ECANCELED : 0; |
39 | } |
40 | |
41 | /* |
42 | * Return stat information in bulk (by-inode) for the filesystem. |
43 | */ |
44 | |
45 | /* |
46 | * Return codes for the formatter function are 0 to continue iterating, and |
47 | * non-zero to stop iterating. Any non-zero value will be passed up to the |
48 | * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop |
49 | * iteration, as neither bulkstat nor inumbers will ever generate that error |
50 | * code on their own. |
51 | */ |
52 | |
53 | typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, |
54 | const struct xfs_bulkstat *bstat); |
55 | |
56 | int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); |
57 | int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); |
58 | void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, |
59 | const struct xfs_bulkstat *bstat); |
60 | |
61 | typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, |
62 | const struct xfs_inumbers *igrp); |
63 | |
64 | int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); |
65 | void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, |
66 | const struct xfs_inumbers *ig); |
67 | |
68 | #endif /* __XFS_ITABLE_H__ */ |
69 | |