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git.ipfire.org Git - thirdparty/xfsprogs-dev.git/blob - include/xfs_inode.h
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
19 #ifndef __XFS_INODE_H__
20 #define __XFS_INODE_H__
22 /* These match kernel side includes */
23 #include "xfs_inode_buf.h"
24 #include "xfs_inode_fork.h"
28 struct xfs_inode_log_item
;
32 * Inode interface. This fakes up a "VFS inode" to make the xfs_inode appear
33 * similar to the kernel which now is used tohold certain parts of the on-disk
39 xfs_dev_t i_rdev
; /* This actually holds xfs_dev_t */
40 uint32_t i_generation
;
42 struct timespec i_atime
;
43 struct timespec i_mtime
;
44 struct timespec i_ctime
;
47 typedef struct xfs_inode
{
48 struct cache_node i_node
;
49 struct xfs_mount
*i_mount
; /* fs mount struct ptr */
50 xfs_ino_t i_ino
; /* inode number (agno/agino) */
51 struct xfs_imap i_imap
; /* location for xfs_imap() */
52 struct xfs_buftarg i_dev
; /* dev for this inode */
53 struct xfs_ifork
*i_afp
; /* attribute fork pointer */
54 struct xfs_ifork
*i_cowfp
; /* copy on write extents */
55 struct xfs_ifork i_df
; /* data fork */
56 struct xfs_trans
*i_transp
; /* ptr to owning transaction */
57 struct xfs_inode_log_item
*i_itemp
; /* logging information */
58 unsigned int i_delayed_blks
; /* count of delay alloc blks */
59 struct xfs_icdinode i_d
; /* most of ondisk inode */
61 xfs_extnum_t i_cnextents
; /* # of extents in cow fork */
62 unsigned int i_cformat
; /* format of cow fork */
64 xfs_fsize_t i_size
; /* in-memory size */
65 const struct xfs_dir_ops
*d_ops
; /* directory ops vector */
69 /* Convert from vfs inode to xfs inode */
70 static inline struct xfs_inode
*XFS_I(struct inode
*inode
)
72 return container_of(inode
, struct xfs_inode
, i_vnode
);
75 /* convert from xfs inode to vfs inode */
76 static inline struct inode
*VFS_I(struct xfs_inode
*ip
)
81 /* We only have i_size in the xfs inode in userspace */
82 static inline loff_t
i_size_read(struct inode
*inode
)
84 return XFS_I(inode
)->i_size
;
88 * wrappers around the mode checks to simplify code
90 static inline bool XFS_ISREG(struct xfs_inode
*ip
)
92 return S_ISREG(VFS_I(ip
)->i_mode
);
95 static inline bool XFS_ISDIR(struct xfs_inode
*ip
)
97 return S_ISDIR(VFS_I(ip
)->i_mode
);
101 * For regular files we only update the on-disk filesize when actually
102 * writing data back to disk. Until then only the copy in the VFS inode
105 static inline xfs_fsize_t
XFS_ISIZE(struct xfs_inode
*ip
)
109 return ip
->i_d
.di_size
;
111 #define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)
113 /* inode link counts */
114 static inline void set_nlink(struct inode
*inode
, uint32_t nlink
)
116 inode
->i_nlink
= nlink
;
118 static inline void inc_nlink(struct inode
*inode
)
124 * Project quota id helpers (previously projid was 16bit only and using two
125 * 16bit values to hold new 32bit projid was chosen to retain compatibility with
126 * "old" filesystems).
128 * Copied here from xfs_inode.h because it has to be defined after the struct
132 xfs_get_projid(struct xfs_icdinode
*id
)
134 return (prid_t
)id
->di_projid_hi
<< 16 | id
->di_projid_lo
;
138 xfs_set_projid(struct xfs_icdinode
*id
, prid_t projid
)
140 id
->di_projid_hi
= (uint16_t) (projid
>> 16);
141 id
->di_projid_lo
= (uint16_t) (projid
& 0xffff);
144 static inline bool xfs_is_reflink_inode(struct xfs_inode
*ip
)
146 return ip
->i_d
.di_flags2
& XFS_DIFLAG2_REFLINK
;
149 typedef struct cred
{
154 extern int libxfs_inode_alloc (struct xfs_trans
**, struct xfs_inode
*,
155 mode_t
, nlink_t
, xfs_dev_t
, struct cred
*,
156 struct fsxattr
*, struct xfs_inode
**);
157 extern void libxfs_trans_inode_alloc_buf (struct xfs_trans
*,
160 extern void libxfs_trans_ichgtime(struct xfs_trans
*,
161 struct xfs_inode
*, int);
162 extern int libxfs_iflush_int (struct xfs_inode
*, struct xfs_buf
*);
164 /* Inode Cache Interfaces */
165 extern bool libxfs_inode_verify_forks(struct xfs_inode
*ip
,
166 struct xfs_ifork_ops
*);
167 extern int libxfs_iget(struct xfs_mount
*, struct xfs_trans
*, xfs_ino_t
,
168 uint
, struct xfs_inode
**,
169 struct xfs_ifork_ops
*);
170 extern void libxfs_iput(struct xfs_inode
*);
172 #define IRELE(ip) libxfs_iput(ip)
174 #endif /* __XFS_INODE_H__ */