summaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_inode_item.h
blob: d8775e0d62914ead1a6a7966f1c370635061fdff (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
/*
 * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#ifndef	__XFS_INODE_ITEM_H__
#define	__XFS_INODE_ITEM_H__

/*
 * This is the structure used to lay out an inode log item in the
 * log.  The size of the inline data/extents/b-tree root to be logged
 * (if any) is indicated in the ilf_dsize field.  Changes to this structure
 * must be added on to the end.
 *
 * Convention for naming inode log item versions :  The current version
 * is always named XFS_LI_INODE.  When an inode log item gets superseded,
 * add the latest version of IRIX that will generate logs with that item
 * to the version name.
 *
 * -Version 1 of this structure (XFS_LI_5_3_INODE) included up to the first
 *	union (ilf_u) field.  This was released with IRIX 5.3-XFS.
 * -Version 2 of this structure (XFS_LI_6_1_INODE) is currently the entire
 *	structure.  This was released with IRIX 6.0.1-XFS and IRIX 6.1.
 * -Version 3 of this structure (XFS_LI_INODE) is the same as version 2
 *	so a new structure definition wasn't necessary.  However, we had
 *	to add a new type because the inode cluster size changed from 4K
 *	to 8K and the version number had to be rev'ved to keep older kernels
 *	from trying to recover logs with the 8K buffers in them.  The logging
 *	code can handle recovery on different-sized clusters now so hopefully
 *	this'll be the last time we need to change the inode log item just
 *	for a change in the inode cluster size.  This new version was
 *	released with IRIX 6.2.
 */
typedef struct xfs_inode_log_format {
	unsigned short		ilf_type;	/* inode log item type */
	unsigned short		ilf_size;	/* size of this item */
	uint			ilf_fields;	/* flags for fields logged */
	ushort			ilf_asize;	/* size of attr d/ext/root */
	ushort			ilf_dsize;	/* size of data/ext/root */
	xfs_ino_t		ilf_ino;	/* inode number */
	union {
		xfs_dev_t	ilfu_rdev;	/* rdev value for dev inode*/
		uuid_t		ilfu_uuid;	/* mount point value */
	} ilf_u;
	__int64_t		ilf_blkno;	/* blkno of inode buffer */
	int			ilf_len;	/* len of inode buffer */
	int			ilf_boffset;	/* off of inode in buffer */
} xfs_inode_log_format_t;

/* Initial version shipped with IRIX 5.3-XFS */
typedef struct xfs_inode_log_format_v1 {
	unsigned short		ilf_type;	/* inode log item type */
	unsigned short		ilf_size;	/* size of this item */
	uint			ilf_fields;	/* flags for fields logged */
	uint			ilf_dsize;	/* size of data/ext/root */
	xfs_ino_t		ilf_ino;	/* inode number */
	union {
		xfs_dev_t	ilfu_rdev;	/* rdev value for dev inode*/
		uuid_t		ilfu_uuid;	/* mount point value */
	} ilf_u;
} xfs_inode_log_format_t_v1;

/*
 * Flags for xfs_trans_log_inode flags field.
 */
#define	XFS_ILOG_CORE	0x001	/* log standard inode fields */
#define	XFS_ILOG_DDATA	0x002	/* log i_df.if_data */
#define	XFS_ILOG_DEXT	0x004	/* log i_df.if_extents */
#define	XFS_ILOG_DBROOT	0x008	/* log i_df.i_broot */
#define	XFS_ILOG_DEV	0x010	/* log the dev field */
#define	XFS_ILOG_UUID	0x020	/* log the uuid field */
#define	XFS_ILOG_ADATA	0x040	/* log i_af.if_data */
#define	XFS_ILOG_AEXT	0x080	/* log i_af.if_extents */
#define	XFS_ILOG_ABROOT	0x100	/* log i_af.i_broot */

#define	XFS_ILOG_NONCORE	(XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
				 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
				 XFS_ILOG_UUID | XFS_ILOG_ADATA | \
				 XFS_ILOG_AEXT | XFS_ILOG_ABROOT)

#define	XFS_ILOG_DFORK		(XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
				 XFS_ILOG_DBROOT)

#define	XFS_ILOG_AFORK		(XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
				 XFS_ILOG_ABROOT)

#define	XFS_ILOG_ALL		(XFS_ILOG_CORE | XFS_ILOG_DDATA | \
				 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
				 XFS_ILOG_DEV | XFS_ILOG_UUID | \
				 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
				 XFS_ILOG_ABROOT)

#define	XFS_ILI_HOLD		0x1
#define	XFS_ILI_IOLOCKED_EXCL	0x2
#define	XFS_ILI_IOLOCKED_SHARED	0x4

#define	XFS_ILI_IOLOCKED_ANY   (XFS_ILI_IOLOCKED_EXCL | XFS_ILI_IOLOCKED_SHARED)


#ifdef __KERNEL__

struct xfs_buf;
struct xfs_bmbt_rec_64;
struct xfs_inode;
struct xfs_mount;


typedef struct xfs_inode_log_item {
	xfs_log_item_t		ili_item;	   /* common portion */
	struct xfs_inode	*ili_inode;	   /* inode ptr */
	xfs_lsn_t		ili_flush_lsn;	   /* lsn at last flush */
	xfs_lsn_t		ili_last_lsn;	   /* lsn at last transaction */
	unsigned short		ili_ilock_recur;   /* lock recursion count */
	unsigned short		ili_iolock_recur;  /* lock recursion count */
	unsigned short		ili_flags;	   /* misc flags */
	unsigned short		ili_logged;	   /* flushed logged data */
	unsigned int		ili_last_fields;   /* fields when flushed */
	struct xfs_bmbt_rec_64	*ili_extents_buf;  /* array of logged
						      data exts */
	struct xfs_bmbt_rec_64	*ili_aextents_buf; /* array of logged
						      attr exts */
	unsigned int            ili_pushbuf_flag;  /* one bit used in push_ail */

#ifdef DEBUG
	uint64_t                ili_push_owner;    /* one who sets pushbuf_flag
						      above gets to push the buf */
#endif
#ifdef XFS_TRANS_DEBUG
	int			ili_root_size;
	char			*ili_orig_root;
#endif
	xfs_inode_log_format_t	ili_format;	   /* logged structure */
} xfs_inode_log_item_t;


#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ILOG_FDATA)
int xfs_ilog_fdata(int w);
#define	XFS_ILOG_FDATA(w)	xfs_ilog_fdata(w)
#else
#define	XFS_ILOG_FDATA(w)	\
	((w) == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA)
#endif

#endif	/* __KERNEL__ */

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ILOG_FBROOT)
int xfs_ilog_fbroot(int w);
#define	XFS_ILOG_FBROOT(w)	xfs_ilog_fbroot(w)
#else
#define	XFS_ILOG_FBROOT(w)	\
	((w) == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ILOG_FEXT)
int xfs_ilog_fext(int w);
#define	XFS_ILOG_FEXT(w)	xfs_ilog_fext(w)
#else
#define	XFS_ILOG_FEXT(w)	\
	((w) == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT)
#endif

#ifdef __KERNEL__

void	xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
void	xfs_inode_item_destroy(struct xfs_inode *);
void	xfs_iflush_done(struct xfs_buf *, xfs_inode_log_item_t *);
void	xfs_istale_done(struct xfs_buf *, xfs_inode_log_item_t *);
void	xfs_iflush_abort(struct xfs_inode *);

#endif	/* __KERNEL__ */

#endif	/* __XFS_INODE_ITEM_H__ */