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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
|
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_VNODE_H__
#define __XFS_VNODE_H__
struct file;
struct bhv_vfs;
struct bhv_vattr;
struct xfs_iomap;
struct attrlist_cursor_kern;
typedef struct dentry bhv_vname_t;
typedef __u64 bhv_vnumber_t;
typedef struct bhv_vnode {
bhv_vnumber_t v_number; /* in-core vnode number */
struct inode v_inode; /* Linux inode */
/* inode MUST be last */
} bhv_vnode_t;
#define VN_ISLNK(vp) S_ISLNK((vp)->v_inode.i_mode)
#define VN_ISREG(vp) S_ISREG((vp)->v_inode.i_mode)
#define VN_ISDIR(vp) S_ISDIR((vp)->v_inode.i_mode)
#define VN_ISCHR(vp) S_ISCHR((vp)->v_inode.i_mode)
#define VN_ISBLK(vp) S_ISBLK((vp)->v_inode.i_mode)
/*
* Vnode to Linux inode mapping.
*/
static inline struct bhv_vnode *vn_from_inode(struct inode *inode)
{
return container_of(inode, bhv_vnode_t, v_inode);
}
static inline struct inode *vn_to_inode(struct bhv_vnode *vnode)
{
return &vnode->v_inode;
}
/*
* Values for the vop_rwlock/rwunlock flags parameter.
*/
typedef enum bhv_vrwlock {
VRWLOCK_NONE,
VRWLOCK_READ,
VRWLOCK_WRITE,
VRWLOCK_WRITE_DIRECT,
VRWLOCK_TRY_READ,
VRWLOCK_TRY_WRITE
} bhv_vrwlock_t;
/*
* Return values for xfs_inactive. A return value of
* VN_INACTIVE_NOCACHE implies that the file system behavior
* has disassociated its state and bhv_desc_t from the vnode.
*/
#define VN_INACTIVE_CACHE 0
#define VN_INACTIVE_NOCACHE 1
/*
* Flags for read/write calls - same values as IRIX
*/
#define IO_ISAIO 0x00001 /* don't wait for completion */
#define IO_ISDIRECT 0x00004 /* bypass page cache */
#define IO_INVIS 0x00020 /* don't update inode timestamps */
/*
* Flags for vop_iflush call
*/
#define FLUSH_SYNC 1 /* wait for flush to complete */
#define FLUSH_INODE 2 /* flush the inode itself */
#define FLUSH_LOG 4 /* force the last log entry for
* this inode out to disk */
/*
* Flush/Invalidate options for vop_toss/flush/flushinval_pages.
*/
#define FI_NONE 0 /* none */
#define FI_REMAPF 1 /* Do a remapf prior to the operation */
#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
Prevent VM access to the pages until
the operation completes. */
/*
* Vnode attributes. va_mask indicates those attributes the caller
* wants to set or extract.
*/
typedef struct bhv_vattr {
int va_mask; /* bit-mask of attributes present */
mode_t va_mode; /* file access mode and type */
xfs_nlink_t va_nlink; /* number of references to file */
uid_t va_uid; /* owner user id */
gid_t va_gid; /* owner group id */
xfs_ino_t va_nodeid; /* file id */
xfs_off_t va_size; /* file size in bytes */
u_long va_blocksize; /* blocksize preferred for i/o */
struct timespec va_atime; /* time of last access */
struct timespec va_mtime; /* time of last modification */
struct timespec va_ctime; /* time file changed */
u_int va_gen; /* generation number of file */
xfs_dev_t va_rdev; /* device the special file represents */
__int64_t va_nblocks; /* number of blocks allocated */
u_long va_xflags; /* random extended file flags */
u_long va_extsize; /* file extent size */
u_long va_nextents; /* number of extents in file */
u_long va_anextents; /* number of attr extents in file */
prid_t va_projid; /* project id */
} bhv_vattr_t;
/*
* setattr or getattr attributes
*/
#define XFS_AT_TYPE 0x00000001
#define XFS_AT_MODE 0x00000002
#define XFS_AT_UID 0x00000004
#define XFS_AT_GID 0x00000008
#define XFS_AT_FSID 0x00000010
#define XFS_AT_NODEID 0x00000020
#define XFS_AT_NLINK 0x00000040
#define XFS_AT_SIZE 0x00000080
#define XFS_AT_ATIME 0x00000100
#define XFS_AT_MTIME 0x00000200
#define XFS_AT_CTIME 0x00000400
#define XFS_AT_RDEV 0x00000800
#define XFS_AT_BLKSIZE 0x00001000
#define XFS_AT_NBLOCKS 0x00002000
#define XFS_AT_VCODE 0x00004000
#define XFS_AT_MAC 0x00008000
#define XFS_AT_UPDATIME 0x00010000
#define XFS_AT_UPDMTIME 0x00020000
#define XFS_AT_UPDCTIME 0x00040000
#define XFS_AT_ACL 0x00080000
#define XFS_AT_CAP 0x00100000
#define XFS_AT_INF 0x00200000
#define XFS_AT_XFLAGS 0x00400000
#define XFS_AT_EXTSIZE 0x00800000
#define XFS_AT_NEXTENTS 0x01000000
#define XFS_AT_ANEXTENTS 0x02000000
#define XFS_AT_PROJID 0x04000000
#define XFS_AT_SIZE_NOPERM 0x08000000
#define XFS_AT_GENCOUNT 0x10000000
#define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
#define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
#define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
#define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
#define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
/*
* Modes.
*/
#define VSUID S_ISUID /* set user id on execution */
#define VSGID S_ISGID /* set group id on execution */
#define VSVTX S_ISVTX /* save swapped text even after use */
#define VREAD S_IRUSR /* read, write, execute permissions */
#define VWRITE S_IWUSR
#define VEXEC S_IXUSR
#define MODEMASK S_IALLUGO /* mode bits plus permission bits */
/*
* Check whether mandatory file locking is enabled.
*/
#define MANDLOCK(vp, mode) \
(VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
extern void vn_init(void);
extern bhv_vnode_t *vn_initialize(struct inode *);
extern int vn_revalidate(struct bhv_vnode *);
extern int __vn_revalidate(struct bhv_vnode *, bhv_vattr_t *);
extern void vn_revalidate_core(struct bhv_vnode *, bhv_vattr_t *);
/*
* Yeah, these don't take vnode anymore at all, all this should be
* cleaned up at some point.
*/
extern void vn_iowait(struct xfs_inode *ip);
extern void vn_iowake(struct xfs_inode *ip);
extern void vn_ioerror(struct xfs_inode *ip, int error, char *f, int l);
static inline int vn_count(struct bhv_vnode *vp)
{
return atomic_read(&vn_to_inode(vp)->i_count);
}
/*
* Vnode reference counting functions (and macros for compatibility).
*/
extern bhv_vnode_t *vn_hold(struct bhv_vnode *);
#if defined(XFS_VNODE_TRACE)
#define VN_HOLD(vp) \
((void)vn_hold(vp), \
vn_trace_hold(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address))
#define VN_RELE(vp) \
(vn_trace_rele(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address), \
iput(vn_to_inode(vp)))
#else
#define VN_HOLD(vp) ((void)vn_hold(vp))
#define VN_RELE(vp) (iput(vn_to_inode(vp)))
#endif
static inline struct bhv_vnode *vn_grab(struct bhv_vnode *vp)
{
struct inode *inode = igrab(vn_to_inode(vp));
return inode ? vn_from_inode(inode) : NULL;
}
/*
* Vname handling macros.
*/
#define VNAME(dentry) ((char *) (dentry)->d_name.name)
#define VNAMELEN(dentry) ((dentry)->d_name.len)
#define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode))
/*
* Dealing with bad inodes
*/
static inline void vn_mark_bad(struct bhv_vnode *vp)
{
make_bad_inode(vn_to_inode(vp));
}
static inline int VN_BAD(struct bhv_vnode *vp)
{
return is_bad_inode(vn_to_inode(vp));
}
/*
* Extracting atime values in various formats
*/
static inline void vn_atime_to_bstime(bhv_vnode_t *vp, xfs_bstime_t *bs_atime)
{
bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec;
bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec;
}
static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts)
{
*ts = vp->v_inode.i_atime;
}
static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt)
{
*tt = vp->v_inode.i_atime.tv_sec;
}
/*
* Some useful predicates.
*/
#define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping)
#define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages)
#define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \
PAGECACHE_TAG_DIRTY)
/*
* Flags to vop_setattr/getattr.
*/
#define ATTR_UTIME 0x01 /* non-default utime(2) request */
#define ATTR_DMI 0x08 /* invocation from a DMI function */
#define ATTR_LAZY 0x80 /* set/get attributes lazily */
#define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
#define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
#define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */
/*
* Flags to vop_fsync/reclaim.
*/
#define FSYNC_NOWAIT 0 /* asynchronous flush */
#define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
#define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
#define FSYNC_DATA 0x4 /* synchronous fsync of data only */
/*
* Tracking vnode activity.
*/
#if defined(XFS_VNODE_TRACE)
#define VNODE_TRACE_SIZE 16 /* number of trace entries */
#define VNODE_KTRACE_ENTRY 1
#define VNODE_KTRACE_EXIT 2
#define VNODE_KTRACE_HOLD 3
#define VNODE_KTRACE_REF 4
#define VNODE_KTRACE_RELE 5
extern void vn_trace_entry(struct xfs_inode *, const char *, inst_t *);
extern void vn_trace_exit(struct xfs_inode *, const char *, inst_t *);
extern void vn_trace_hold(struct xfs_inode *, char *, int, inst_t *);
extern void vn_trace_ref(struct xfs_inode *, char *, int, inst_t *);
extern void vn_trace_rele(struct xfs_inode *, char *, int, inst_t *);
#else
#define vn_trace_entry(a,b,c)
#define vn_trace_exit(a,b,c)
#define vn_trace_hold(a,b,c,d)
#define vn_trace_ref(a,b,c,d)
#define vn_trace_rele(a,b,c,d)
#endif
#endif /* __XFS_VNODE_H__ */
|
