1 /*
2  * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3  * All Rights Reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it would be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write the Free Software Foundation,
16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17  */
18 #ifndef	__XFS_INODE_ITEM_H__
19 #define	__XFS_INODE_ITEM_H__
20 
21 /*
22  * This is the structure used to lay out an inode log item in the
23  * log.  The size of the inline data/extents/b-tree root to be logged
24  * (if any) is indicated in the ilf_dsize field.  Changes to this structure
25  * must be added on to the end.
26  */
27 typedef struct xfs_inode_log_format {
28 	__uint16_t		ilf_type;	/* inode log item type */
29 	__uint16_t		ilf_size;	/* size of this item */
30 	__uint32_t		ilf_fields;	/* flags for fields logged */
31 	__uint16_t		ilf_asize;	/* size of attr d/ext/root */
32 	__uint16_t		ilf_dsize;	/* size of data/ext/root */
33 	__uint64_t		ilf_ino;	/* inode number */
34 	union {
35 		__uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
36 		uuid_t		ilfu_uuid;	/* mount point value */
37 	} ilf_u;
38 	__int64_t		ilf_blkno;	/* blkno of inode buffer */
39 	__int32_t		ilf_len;	/* len of inode buffer */
40 	__int32_t		ilf_boffset;	/* off of inode in buffer */
41 } xfs_inode_log_format_t;
42 
43 typedef struct xfs_inode_log_format_32 {
44 	__uint16_t		ilf_type;	/* inode log item type */
45 	__uint16_t		ilf_size;	/* size of this item */
46 	__uint32_t		ilf_fields;	/* flags for fields logged */
47 	__uint16_t		ilf_asize;	/* size of attr d/ext/root */
48 	__uint16_t		ilf_dsize;	/* size of data/ext/root */
49 	__uint64_t		ilf_ino;	/* inode number */
50 	union {
51 		__uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
52 		uuid_t		ilfu_uuid;	/* mount point value */
53 	} ilf_u;
54 	__int64_t		ilf_blkno;	/* blkno of inode buffer */
55 	__int32_t		ilf_len;	/* len of inode buffer */
56 	__int32_t		ilf_boffset;	/* off of inode in buffer */
57 } __attribute__((packed)) xfs_inode_log_format_32_t;
58 
59 typedef struct xfs_inode_log_format_64 {
60 	__uint16_t		ilf_type;	/* inode log item type */
61 	__uint16_t		ilf_size;	/* size of this item */
62 	__uint32_t		ilf_fields;	/* flags for fields logged */
63 	__uint16_t		ilf_asize;	/* size of attr d/ext/root */
64 	__uint16_t		ilf_dsize;	/* size of data/ext/root */
65 	__uint32_t		ilf_pad;	/* pad for 64 bit boundary */
66 	__uint64_t		ilf_ino;	/* inode number */
67 	union {
68 		__uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
69 		uuid_t		ilfu_uuid;	/* mount point value */
70 	} ilf_u;
71 	__int64_t		ilf_blkno;	/* blkno of inode buffer */
72 	__int32_t		ilf_len;	/* len of inode buffer */
73 	__int32_t		ilf_boffset;	/* off of inode in buffer */
74 } xfs_inode_log_format_64_t;
75 
76 /*
77  * Flags for xfs_trans_log_inode flags field.
78  */
79 #define	XFS_ILOG_CORE	0x001	/* log standard inode fields */
80 #define	XFS_ILOG_DDATA	0x002	/* log i_df.if_data */
81 #define	XFS_ILOG_DEXT	0x004	/* log i_df.if_extents */
82 #define	XFS_ILOG_DBROOT	0x008	/* log i_df.i_broot */
83 #define	XFS_ILOG_DEV	0x010	/* log the dev field */
84 #define	XFS_ILOG_UUID	0x020	/* log the uuid field */
85 #define	XFS_ILOG_ADATA	0x040	/* log i_af.if_data */
86 #define	XFS_ILOG_AEXT	0x080	/* log i_af.if_extents */
87 #define	XFS_ILOG_ABROOT	0x100	/* log i_af.i_broot */
88 
89 
90 /*
91  * The timestamps are dirty, but not necessarily anything else in the inode
92  * core.  Unlike the other fields above this one must never make it to disk
93  * in the ilf_fields of the inode_log_format, but is purely store in-memory in
94  * ili_fields in the inode_log_item.
95  */
96 #define XFS_ILOG_TIMESTAMP	0x4000
97 
98 #define	XFS_ILOG_NONCORE	(XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
99 				 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
100 				 XFS_ILOG_UUID | XFS_ILOG_ADATA | \
101 				 XFS_ILOG_AEXT | XFS_ILOG_ABROOT)
102 
103 #define	XFS_ILOG_DFORK		(XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
104 				 XFS_ILOG_DBROOT)
105 
106 #define	XFS_ILOG_AFORK		(XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
107 				 XFS_ILOG_ABROOT)
108 
109 #define	XFS_ILOG_ALL		(XFS_ILOG_CORE | XFS_ILOG_DDATA | \
110 				 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
111 				 XFS_ILOG_DEV | XFS_ILOG_UUID | \
112 				 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
113 				 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP)
114 
xfs_ilog_fbroot(int w)115 static inline int xfs_ilog_fbroot(int w)
116 {
117 	return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
118 }
119 
xfs_ilog_fext(int w)120 static inline int xfs_ilog_fext(int w)
121 {
122 	return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
123 }
124 
xfs_ilog_fdata(int w)125 static inline int xfs_ilog_fdata(int w)
126 {
127 	return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
128 }
129 
130 #ifdef __KERNEL__
131 
132 struct xfs_buf;
133 struct xfs_bmbt_rec;
134 struct xfs_inode;
135 struct xfs_mount;
136 
137 
138 typedef struct xfs_inode_log_item {
139 	xfs_log_item_t		ili_item;	   /* common portion */
140 	struct xfs_inode	*ili_inode;	   /* inode ptr */
141 	xfs_lsn_t		ili_flush_lsn;	   /* lsn at last flush */
142 	xfs_lsn_t		ili_last_lsn;	   /* lsn at last transaction */
143 	unsigned short		ili_lock_flags;	   /* lock flags */
144 	unsigned short		ili_logged;	   /* flushed logged data */
145 	unsigned int		ili_last_fields;   /* fields when flushed */
146 	unsigned int		ili_fields;	   /* fields to be logged */
147 	struct xfs_bmbt_rec	*ili_extents_buf;  /* array of logged
148 						      data exts */
149 	struct xfs_bmbt_rec	*ili_aextents_buf; /* array of logged
150 						      attr exts */
151 #ifdef XFS_TRANS_DEBUG
152 	int			ili_root_size;
153 	char			*ili_orig_root;
154 #endif
155 	xfs_inode_log_format_t	ili_format;	   /* logged structure */
156 } xfs_inode_log_item_t;
157 
158 
xfs_inode_clean(xfs_inode_t * ip)159 static inline int xfs_inode_clean(xfs_inode_t *ip)
160 {
161 	return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
162 }
163 
164 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
165 extern void xfs_inode_item_destroy(struct xfs_inode *);
166 extern void xfs_iflush_done(struct xfs_buf *, struct xfs_log_item *);
167 extern void xfs_istale_done(struct xfs_buf *, struct xfs_log_item *);
168 extern void xfs_iflush_abort(struct xfs_inode *);
169 extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
170 					 xfs_inode_log_format_t *);
171 
172 #endif	/* __KERNEL__ */
173 
174 #endif	/* __XFS_INODE_ITEM_H__ */
175