xref: /openbmc/linux/fs/xfs/xfs_itable.h (revision e9246c87)
1 /*
2  * Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it would be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write the Free Software Foundation,
15  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
16  */
17 #ifndef __XFS_ITABLE_H__
18 #define	__XFS_ITABLE_H__
19 
20 /*
21  * xfs_bulkstat() is used to fill in xfs_bstat structures as well as dm_stat
22  * structures (by the dmi library). This is a pointer to a formatter function
23  * that will iget the inode and fill in the appropriate structure.
24  * see xfs_bulkstat_one() and xfs_dm_bulkstat_one() in dmapi_xfs.c
25  */
26 typedef int (*bulkstat_one_pf)(struct xfs_mount	*mp,
27 			       xfs_ino_t	ino,
28 			       void		__user *buffer,
29 			       int		ubsize,
30 			       int		*ubused,
31 			       int		*stat);
32 
33 struct xfs_bulkstat_agichunk {
34 	xfs_ino_t	ac_lastino;	/* last inode returned */
35 	char		__user **ac_ubuffer;/* pointer into user's buffer */
36 	int		ac_ubleft;	/* bytes left in user's buffer */
37 	int		ac_ubelem;	/* spaces used in user's buffer */
38 };
39 
40 int
41 xfs_bulkstat_ag_ichunk(
42 	struct xfs_mount		*mp,
43 	xfs_agnumber_t			agno,
44 	struct xfs_inobt_rec_incore	*irbp,
45 	bulkstat_one_pf			formatter,
46 	size_t				statstruct_size,
47 	struct xfs_bulkstat_agichunk	*acp);
48 
49 /*
50  * Values for stat return value.
51  */
52 #define BULKSTAT_RV_NOTHING	0
53 #define BULKSTAT_RV_DIDONE	1
54 #define BULKSTAT_RV_GIVEUP	2
55 
56 /*
57  * Return stat information in bulk (by-inode) for the filesystem.
58  */
59 int					/* error status */
60 xfs_bulkstat(
61 	xfs_mount_t	*mp,		/* mount point for filesystem */
62 	xfs_ino_t	*lastino,	/* last inode returned */
63 	int		*count,		/* size of buffer/count returned */
64 	bulkstat_one_pf formatter,	/* func that'd fill a single buf */
65 	size_t		statstruct_size,/* sizeof struct that we're filling */
66 	char		__user *ubuffer,/* buffer with inode stats */
67 	int		*done);		/* 1 if there are more stats to get */
68 
69 typedef int (*bulkstat_one_fmt_pf)(  /* used size in bytes or negative error */
70 	void			__user *ubuffer, /* buffer to write to */
71 	int			ubsize,		 /* remaining user buffer sz */
72 	int			*ubused,	 /* bytes used by formatter */
73 	const xfs_bstat_t	*buffer);        /* buffer to read from */
74 
75 int
76 xfs_bulkstat_one_int(
77 	xfs_mount_t		*mp,
78 	xfs_ino_t		ino,
79 	void			__user *buffer,
80 	int			ubsize,
81 	bulkstat_one_fmt_pf	formatter,
82 	int			*ubused,
83 	int			*stat);
84 
85 int
86 xfs_bulkstat_one(
87 	xfs_mount_t		*mp,
88 	xfs_ino_t		ino,
89 	void			__user *buffer,
90 	int			ubsize,
91 	int			*ubused,
92 	int			*stat);
93 
94 typedef int (*inumbers_fmt_pf)(
95 	void			__user *ubuffer, /* buffer to write to */
96 	const xfs_inogrp_t	*buffer,	/* buffer to read from */
97 	long			count,		/* # of elements to read */
98 	long			*written);	/* # of bytes written */
99 
100 int
101 xfs_inumbers_fmt(
102 	void			__user *ubuffer, /* buffer to write to */
103 	const xfs_inogrp_t	*buffer,	/* buffer to read from */
104 	long			count,		/* # of elements to read */
105 	long			*written);	/* # of bytes written */
106 
107 int					/* error status */
108 xfs_inumbers(
109 	xfs_mount_t		*mp,	/* mount point for filesystem */
110 	xfs_ino_t		*last,	/* last inode returned */
111 	int			*count,	/* size of buffer/count returned */
112 	void			__user *buffer, /* buffer with inode info */
113 	inumbers_fmt_pf		formatter);
114 
115 #endif	/* __XFS_ITABLE_H__ */
116