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
18 #ifndef __XFS_VNODE_H__
19 #define __XFS_VNODE_H__
26 struct attrlist_cursor_kern
;
28 typedef struct dentry bhv_vname_t
;
29 typedef __u64 bhv_vnumber_t
;
31 typedef enum bhv_vflags
{
32 VMODIFIED
= 0x08, /* XFS inode state possibly differs */
33 /* to the Linux inode state. */
34 VTRUNCATED
= 0x40, /* truncated down so flush-on-close */
38 * MP locking protocols:
39 * v_flag, v_vfsp VN_LOCK/VN_UNLOCK
41 typedef struct bhv_vnode
{
42 bhv_vflags_t v_flag
; /* vnode flags (see above) */
43 bhv_vfs_t
*v_vfsp
; /* ptr to containing VFS */
44 bhv_vnumber_t v_number
; /* in-core vnode number */
45 bhv_head_t v_bh
; /* behavior head */
46 spinlock_t v_lock
; /* VN_LOCK/VN_UNLOCK */
47 atomic_t v_iocount
; /* outstanding I/O count */
48 #ifdef XFS_VNODE_TRACE
49 struct ktrace
*v_trace
; /* trace header structure */
51 struct inode v_inode
; /* Linux inode */
52 /* inode MUST be last */
55 #define VN_ISLNK(vp) S_ISLNK((vp)->v_inode.i_mode)
56 #define VN_ISREG(vp) S_ISREG((vp)->v_inode.i_mode)
57 #define VN_ISDIR(vp) S_ISDIR((vp)->v_inode.i_mode)
58 #define VN_ISCHR(vp) S_ISCHR((vp)->v_inode.i_mode)
59 #define VN_ISBLK(vp) S_ISBLK((vp)->v_inode.i_mode)
61 #define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
62 #define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */
63 #define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
66 VN_BHV_UNKNOWN
, /* not specified */
68 VN_BHV_DM
, /* data migration */
69 VN_BHV_QM
, /* quota manager */
70 VN_BHV_IO
, /* IO path */
71 VN_BHV_END
/* housekeeping end-of-range */
74 #define VNODE_POSITION_XFS (VNODE_POSITION_BASE)
75 #define VNODE_POSITION_DM (VNODE_POSITION_BASE+10)
76 #define VNODE_POSITION_QM (VNODE_POSITION_BASE+20)
77 #define VNODE_POSITION_IO (VNODE_POSITION_BASE+30)
80 * Macros for dealing with the behavior descriptor inside of the vnode.
82 #define BHV_TO_VNODE(bdp) ((bhv_vnode_t *)BHV_VOBJ(bdp))
83 #define BHV_TO_VNODE_NULL(bdp) ((bhv_vnode_t *)BHV_VOBJNULL(bdp))
85 #define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh)))
86 #define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
87 #define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp)
88 #define vn_bhv_lookup(bhp,ops) bhv_lookup(bhp,ops)
89 #define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops)
92 * Vnode to Linux inode mapping.
94 static inline struct bhv_vnode
*vn_from_inode(struct inode
*inode
)
96 return container_of(inode
, bhv_vnode_t
, v_inode
);
98 static inline struct inode
*vn_to_inode(struct bhv_vnode
*vnode
)
100 return &vnode
->v_inode
;
104 * Values for the vop_rwlock/rwunlock flags parameter.
106 typedef enum bhv_vrwlock
{
110 VRWLOCK_WRITE_DIRECT
,
116 * Return values for bhv_vop_inactive. A return value of
117 * VN_INACTIVE_NOCACHE implies that the file system behavior
118 * has disassociated its state and bhv_desc_t from the vnode.
120 #define VN_INACTIVE_CACHE 0
121 #define VN_INACTIVE_NOCACHE 1
124 * Values for the cmd code given to vop_vnode_change.
126 typedef enum bhv_vchange
{
127 VCHANGE_FLAGS_FRLOCKS
= 0,
128 VCHANGE_FLAGS_ENF_LOCKING
= 1,
129 VCHANGE_FLAGS_TRUNCATED
= 2,
130 VCHANGE_FLAGS_PAGE_DIRTY
= 3,
131 VCHANGE_FLAGS_IOEXCL_COUNT
= 4
134 typedef enum { L_FALSE
, L_TRUE
} lastclose_t
;
136 typedef int (*vop_open_t
)(bhv_desc_t
*, struct cred
*);
137 typedef int (*vop_close_t
)(bhv_desc_t
*, int, lastclose_t
, struct cred
*);
138 typedef ssize_t (*vop_read_t
)(bhv_desc_t
*, struct kiocb
*,
139 const struct iovec
*, unsigned int,
140 loff_t
*, int, struct cred
*);
141 typedef ssize_t (*vop_write_t
)(bhv_desc_t
*, struct kiocb
*,
142 const struct iovec
*, unsigned int,
143 loff_t
*, int, struct cred
*);
144 typedef ssize_t (*vop_sendfile_t
)(bhv_desc_t
*, struct file
*,
145 loff_t
*, int, size_t, read_actor_t
,
146 void *, struct cred
*);
147 typedef ssize_t (*vop_splice_read_t
)(bhv_desc_t
*, struct file
*, loff_t
*,
148 struct pipe_inode_info
*, size_t, int, int,
150 typedef ssize_t (*vop_splice_write_t
)(bhv_desc_t
*, struct pipe_inode_info
*,
151 struct file
*, loff_t
*, size_t, int, int,
153 typedef int (*vop_ioctl_t
)(bhv_desc_t
*, struct inode
*, struct file
*,
154 int, unsigned int, void __user
*);
155 typedef int (*vop_getattr_t
)(bhv_desc_t
*, struct bhv_vattr
*, int,
157 typedef int (*vop_setattr_t
)(bhv_desc_t
*, struct bhv_vattr
*, int,
159 typedef int (*vop_access_t
)(bhv_desc_t
*, int, struct cred
*);
160 typedef int (*vop_lookup_t
)(bhv_desc_t
*, bhv_vname_t
*, bhv_vnode_t
**,
161 int, bhv_vnode_t
*, struct cred
*);
162 typedef int (*vop_create_t
)(bhv_desc_t
*, bhv_vname_t
*, struct bhv_vattr
*,
163 bhv_vnode_t
**, struct cred
*);
164 typedef int (*vop_remove_t
)(bhv_desc_t
*, bhv_vname_t
*, struct cred
*);
165 typedef int (*vop_link_t
)(bhv_desc_t
*, bhv_vnode_t
*, bhv_vname_t
*,
167 typedef int (*vop_rename_t
)(bhv_desc_t
*, bhv_vname_t
*, bhv_vnode_t
*,
168 bhv_vname_t
*, struct cred
*);
169 typedef int (*vop_mkdir_t
)(bhv_desc_t
*, bhv_vname_t
*, struct bhv_vattr
*,
170 bhv_vnode_t
**, struct cred
*);
171 typedef int (*vop_rmdir_t
)(bhv_desc_t
*, bhv_vname_t
*, struct cred
*);
172 typedef int (*vop_readdir_t
)(bhv_desc_t
*, struct uio
*, struct cred
*,
174 typedef int (*vop_symlink_t
)(bhv_desc_t
*, bhv_vname_t
*, struct bhv_vattr
*,
175 char *, bhv_vnode_t
**, struct cred
*);
176 typedef int (*vop_readlink_t
)(bhv_desc_t
*, struct uio
*, int,
178 typedef int (*vop_fsync_t
)(bhv_desc_t
*, int, struct cred
*,
179 xfs_off_t
, xfs_off_t
);
180 typedef int (*vop_inactive_t
)(bhv_desc_t
*, struct cred
*);
181 typedef int (*vop_fid2_t
)(bhv_desc_t
*, struct fid
*);
182 typedef int (*vop_release_t
)(bhv_desc_t
*);
183 typedef int (*vop_rwlock_t
)(bhv_desc_t
*, bhv_vrwlock_t
);
184 typedef void (*vop_rwunlock_t
)(bhv_desc_t
*, bhv_vrwlock_t
);
185 typedef int (*vop_bmap_t
)(bhv_desc_t
*, xfs_off_t
, ssize_t
, int,
186 struct xfs_iomap
*, int *);
187 typedef int (*vop_reclaim_t
)(bhv_desc_t
*);
188 typedef int (*vop_attr_get_t
)(bhv_desc_t
*, const char *, char *, int *,
190 typedef int (*vop_attr_set_t
)(bhv_desc_t
*, const char *, char *, int,
192 typedef int (*vop_attr_remove_t
)(bhv_desc_t
*, const char *,
194 typedef int (*vop_attr_list_t
)(bhv_desc_t
*, char *, int, int,
195 struct attrlist_cursor_kern
*, struct cred
*);
196 typedef void (*vop_link_removed_t
)(bhv_desc_t
*, bhv_vnode_t
*, int);
197 typedef void (*vop_vnode_change_t
)(bhv_desc_t
*, bhv_vchange_t
, __psint_t
);
198 typedef void (*vop_ptossvp_t
)(bhv_desc_t
*, xfs_off_t
, xfs_off_t
, int);
199 typedef void (*vop_pflushinvalvp_t
)(bhv_desc_t
*, xfs_off_t
, xfs_off_t
, int);
200 typedef int (*vop_pflushvp_t
)(bhv_desc_t
*, xfs_off_t
, xfs_off_t
,
202 typedef int (*vop_iflush_t
)(bhv_desc_t
*, int);
205 typedef struct bhv_vnodeops
{
206 bhv_position_t vn_position
; /* position within behavior chain */
208 vop_close_t vop_close
;
210 vop_write_t vop_write
;
211 vop_sendfile_t vop_sendfile
;
212 vop_splice_read_t vop_splice_read
;
213 vop_splice_write_t vop_splice_write
;
214 vop_ioctl_t vop_ioctl
;
215 vop_getattr_t vop_getattr
;
216 vop_setattr_t vop_setattr
;
217 vop_access_t vop_access
;
218 vop_lookup_t vop_lookup
;
219 vop_create_t vop_create
;
220 vop_remove_t vop_remove
;
222 vop_rename_t vop_rename
;
223 vop_mkdir_t vop_mkdir
;
224 vop_rmdir_t vop_rmdir
;
225 vop_readdir_t vop_readdir
;
226 vop_symlink_t vop_symlink
;
227 vop_readlink_t vop_readlink
;
228 vop_fsync_t vop_fsync
;
229 vop_inactive_t vop_inactive
;
231 vop_rwlock_t vop_rwlock
;
232 vop_rwunlock_t vop_rwunlock
;
234 vop_reclaim_t vop_reclaim
;
235 vop_attr_get_t vop_attr_get
;
236 vop_attr_set_t vop_attr_set
;
237 vop_attr_remove_t vop_attr_remove
;
238 vop_attr_list_t vop_attr_list
;
239 vop_link_removed_t vop_link_removed
;
240 vop_vnode_change_t vop_vnode_change
;
241 vop_ptossvp_t vop_tosspages
;
242 vop_pflushinvalvp_t vop_flushinval_pages
;
243 vop_pflushvp_t vop_flush_pages
;
244 vop_release_t vop_release
;
245 vop_iflush_t vop_iflush
;
249 * Virtual node operations, operating from head bhv.
251 #define VNHEAD(vp) ((vp)->v_bh.bh_first)
252 #define VOP(op, vp) (*((bhv_vnodeops_t *)VNHEAD(vp)->bd_ops)->op)
253 #define bhv_vop_open(vp, cr) VOP(vop_open, vp)(VNHEAD(vp),cr)
254 #define bhv_vop_close(vp, f,last,cr) VOP(vop_close, vp)(VNHEAD(vp),f,last,cr)
255 #define bhv_vop_read(vp,file,iov,segs,offset,ioflags,cr) \
256 VOP(vop_read, vp)(VNHEAD(vp),file,iov,segs,offset,ioflags,cr)
257 #define bhv_vop_write(vp,file,iov,segs,offset,ioflags,cr) \
258 VOP(vop_write, vp)(VNHEAD(vp),file,iov,segs,offset,ioflags,cr)
259 #define bhv_vop_sendfile(vp,f,off,ioflags,cnt,act,targ,cr) \
260 VOP(vop_sendfile, vp)(VNHEAD(vp),f,off,ioflags,cnt,act,targ,cr)
261 #define bhv_vop_splice_read(vp,f,o,pipe,cnt,fl,iofl,cr) \
262 VOP(vop_splice_read, vp)(VNHEAD(vp),f,o,pipe,cnt,fl,iofl,cr)
263 #define bhv_vop_splice_write(vp,f,o,pipe,cnt,fl,iofl,cr) \
264 VOP(vop_splice_write, vp)(VNHEAD(vp),f,o,pipe,cnt,fl,iofl,cr)
265 #define bhv_vop_bmap(vp,of,sz,rw,b,n) \
266 VOP(vop_bmap, vp)(VNHEAD(vp),of,sz,rw,b,n)
267 #define bhv_vop_getattr(vp, vap,f,cr) \
268 VOP(vop_getattr, vp)(VNHEAD(vp), vap,f,cr)
269 #define bhv_vop_setattr(vp, vap,f,cr) \
270 VOP(vop_setattr, vp)(VNHEAD(vp), vap,f,cr)
271 #define bhv_vop_access(vp, mode,cr) VOP(vop_access, vp)(VNHEAD(vp), mode,cr)
272 #define bhv_vop_lookup(vp,d,vpp,f,rdir,cr) \
273 VOP(vop_lookup, vp)(VNHEAD(vp),d,vpp,f,rdir,cr)
274 #define bhv_vop_create(dvp,d,vap,vpp,cr) \
275 VOP(vop_create, dvp)(VNHEAD(dvp),d,vap,vpp,cr)
276 #define bhv_vop_remove(dvp,d,cr) VOP(vop_remove, dvp)(VNHEAD(dvp),d,cr)
277 #define bhv_vop_link(dvp,fvp,d,cr) VOP(vop_link, dvp)(VNHEAD(dvp),fvp,d,cr)
278 #define bhv_vop_rename(fvp,fnm,tdvp,tnm,cr) \
279 VOP(vop_rename, fvp)(VNHEAD(fvp),fnm,tdvp,tnm,cr)
280 #define bhv_vop_mkdir(dp,d,vap,vpp,cr) \
281 VOP(vop_mkdir, dp)(VNHEAD(dp),d,vap,vpp,cr)
282 #define bhv_vop_rmdir(dp,d,cr) VOP(vop_rmdir, dp)(VNHEAD(dp),d,cr)
283 #define bhv_vop_readdir(vp,uiop,cr,eofp) \
284 VOP(vop_readdir, vp)(VNHEAD(vp),uiop,cr,eofp)
285 #define bhv_vop_symlink(dvp,d,vap,tnm,vpp,cr) \
286 VOP(vop_symlink, dvp)(VNHEAD(dvp),d,vap,tnm,vpp,cr)
287 #define bhv_vop_readlink(vp,uiop,fl,cr) \
288 VOP(vop_readlink, vp)(VNHEAD(vp),uiop,fl,cr)
289 #define bhv_vop_fsync(vp,f,cr,b,e) VOP(vop_fsync, vp)(VNHEAD(vp),f,cr,b,e)
290 #define bhv_vop_inactive(vp,cr) VOP(vop_inactive, vp)(VNHEAD(vp),cr)
291 #define bhv_vop_release(vp) VOP(vop_release, vp)(VNHEAD(vp))
292 #define bhv_vop_fid2(vp,fidp) VOP(vop_fid2, vp)(VNHEAD(vp),fidp)
293 #define bhv_vop_rwlock(vp,i) VOP(vop_rwlock, vp)(VNHEAD(vp),i)
294 #define bhv_vop_rwlock_try(vp,i) VOP(vop_rwlock, vp)(VNHEAD(vp),i)
295 #define bhv_vop_rwunlock(vp,i) VOP(vop_rwunlock, vp)(VNHEAD(vp),i)
296 #define bhv_vop_frlock(vp,c,fl,flags,offset,fr) \
297 VOP(vop_frlock, vp)(VNHEAD(vp),c,fl,flags,offset,fr)
298 #define bhv_vop_reclaim(vp) VOP(vop_reclaim, vp)(VNHEAD(vp))
299 #define bhv_vop_attr_get(vp, name, val, vallenp, fl, cred) \
300 VOP(vop_attr_get, vp)(VNHEAD(vp),name,val,vallenp,fl,cred)
301 #define bhv_vop_attr_set(vp, name, val, vallen, fl, cred) \
302 VOP(vop_attr_set, vp)(VNHEAD(vp),name,val,vallen,fl,cred)
303 #define bhv_vop_attr_remove(vp, name, flags, cred) \
304 VOP(vop_attr_remove, vp)(VNHEAD(vp),name,flags,cred)
305 #define bhv_vop_attr_list(vp, buf, buflen, fl, cursor, cred) \
306 VOP(vop_attr_list, vp)(VNHEAD(vp),buf,buflen,fl,cursor,cred)
307 #define bhv_vop_link_removed(vp, dvp, linkzero) \
308 VOP(vop_link_removed, vp)(VNHEAD(vp), dvp, linkzero)
309 #define bhv_vop_vnode_change(vp, cmd, val) \
310 VOP(vop_vnode_change, vp)(VNHEAD(vp), cmd, val)
311 #define bhv_vop_toss_pages(vp, first, last, fiopt) \
312 VOP(vop_tosspages, vp)(VNHEAD(vp), first, last, fiopt)
313 #define bhv_vop_flushinval_pages(vp, first, last, fiopt) \
314 VOP(vop_flushinval_pages, vp)(VNHEAD(vp),first,last,fiopt)
315 #define bhv_vop_flush_pages(vp, first, last, flags, fiopt) \
316 VOP(vop_flush_pages, vp)(VNHEAD(vp),first,last,flags,fiopt)
317 #define bhv_vop_ioctl(vp, inode, filp, fl, cmd, arg) \
318 VOP(vop_ioctl, vp)(VNHEAD(vp),inode,filp,fl,cmd,arg)
319 #define bhv_vop_iflush(vp, flags) VOP(vop_iflush, vp)(VNHEAD(vp), flags)
322 * Flags for read/write calls - same values as IRIX
324 #define IO_ISAIO 0x00001 /* don't wait for completion */
325 #define IO_ISDIRECT 0x00004 /* bypass page cache */
326 #define IO_INVIS 0x00020 /* don't update inode timestamps */
329 * Flags for vop_iflush call
331 #define FLUSH_SYNC 1 /* wait for flush to complete */
332 #define FLUSH_INODE 2 /* flush the inode itself */
333 #define FLUSH_LOG 4 /* force the last log entry for
334 * this inode out to disk */
337 * Flush/Invalidate options for vop_toss/flush/flushinval_pages.
339 #define FI_NONE 0 /* none */
340 #define FI_REMAPF 1 /* Do a remapf prior to the operation */
341 #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
342 Prevent VM access to the pages until
343 the operation completes. */
346 * Vnode attributes. va_mask indicates those attributes the caller
347 * wants to set or extract.
349 typedef struct bhv_vattr
{
350 int va_mask
; /* bit-mask of attributes present */
351 mode_t va_mode
; /* file access mode and type */
352 xfs_nlink_t va_nlink
; /* number of references to file */
353 uid_t va_uid
; /* owner user id */
354 gid_t va_gid
; /* owner group id */
355 xfs_ino_t va_nodeid
; /* file id */
356 xfs_off_t va_size
; /* file size in bytes */
357 u_long va_blocksize
; /* blocksize preferred for i/o */
358 struct timespec va_atime
; /* time of last access */
359 struct timespec va_mtime
; /* time of last modification */
360 struct timespec va_ctime
; /* time file changed */
361 u_int va_gen
; /* generation number of file */
362 xfs_dev_t va_rdev
; /* device the special file represents */
363 __int64_t va_nblocks
; /* number of blocks allocated */
364 u_long va_xflags
; /* random extended file flags */
365 u_long va_extsize
; /* file extent size */
366 u_long va_nextents
; /* number of extents in file */
367 u_long va_anextents
; /* number of attr extents in file */
368 prid_t va_projid
; /* project id */
372 * setattr or getattr attributes
374 #define XFS_AT_TYPE 0x00000001
375 #define XFS_AT_MODE 0x00000002
376 #define XFS_AT_UID 0x00000004
377 #define XFS_AT_GID 0x00000008
378 #define XFS_AT_FSID 0x00000010
379 #define XFS_AT_NODEID 0x00000020
380 #define XFS_AT_NLINK 0x00000040
381 #define XFS_AT_SIZE 0x00000080
382 #define XFS_AT_ATIME 0x00000100
383 #define XFS_AT_MTIME 0x00000200
384 #define XFS_AT_CTIME 0x00000400
385 #define XFS_AT_RDEV 0x00000800
386 #define XFS_AT_BLKSIZE 0x00001000
387 #define XFS_AT_NBLOCKS 0x00002000
388 #define XFS_AT_VCODE 0x00004000
389 #define XFS_AT_MAC 0x00008000
390 #define XFS_AT_UPDATIME 0x00010000
391 #define XFS_AT_UPDMTIME 0x00020000
392 #define XFS_AT_UPDCTIME 0x00040000
393 #define XFS_AT_ACL 0x00080000
394 #define XFS_AT_CAP 0x00100000
395 #define XFS_AT_INF 0x00200000
396 #define XFS_AT_XFLAGS 0x00400000
397 #define XFS_AT_EXTSIZE 0x00800000
398 #define XFS_AT_NEXTENTS 0x01000000
399 #define XFS_AT_ANEXTENTS 0x02000000
400 #define XFS_AT_PROJID 0x04000000
401 #define XFS_AT_SIZE_NOPERM 0x08000000
402 #define XFS_AT_GENCOUNT 0x10000000
404 #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
405 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
406 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
407 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
408 XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
409 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
411 #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
412 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
413 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
414 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
416 #define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
418 #define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
420 #define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
421 XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
422 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
427 #define VSUID S_ISUID /* set user id on execution */
428 #define VSGID S_ISGID /* set group id on execution */
429 #define VSVTX S_ISVTX /* save swapped text even after use */
430 #define VREAD S_IRUSR /* read, write, execute permissions */
431 #define VWRITE S_IWUSR
432 #define VEXEC S_IXUSR
434 #define MODEMASK S_IALLUGO /* mode bits plus permission bits */
437 * Check whether mandatory file locking is enabled.
439 #define MANDLOCK(vp, mode) \
440 (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
442 extern void vn_init(void);
443 extern bhv_vnode_t
*vn_initialize(struct inode
*);
444 extern int vn_revalidate(struct bhv_vnode
*);
445 extern int __vn_revalidate(struct bhv_vnode
*, bhv_vattr_t
*);
446 extern void vn_revalidate_core(struct bhv_vnode
*, bhv_vattr_t
*);
448 extern void vn_iowait(struct bhv_vnode
*vp
);
449 extern void vn_iowake(struct bhv_vnode
*vp
);
451 extern void vn_ioerror(struct bhv_vnode
*vp
, int error
, char *f
, int l
);
453 static inline int vn_count(struct bhv_vnode
*vp
)
455 return atomic_read(&vn_to_inode(vp
)->i_count
);
459 * Vnode reference counting functions (and macros for compatibility).
461 extern bhv_vnode_t
*vn_hold(struct bhv_vnode
*);
463 #if defined(XFS_VNODE_TRACE)
464 #define VN_HOLD(vp) \
465 ((void)vn_hold(vp), \
466 vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
467 #define VN_RELE(vp) \
468 (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
469 iput(vn_to_inode(vp)))
471 #define VN_HOLD(vp) ((void)vn_hold(vp))
472 #define VN_RELE(vp) (iput(vn_to_inode(vp)))
475 static inline struct bhv_vnode
*vn_grab(struct bhv_vnode
*vp
)
477 struct inode
*inode
= igrab(vn_to_inode(vp
));
478 return inode
? vn_from_inode(inode
) : NULL
;
482 * Vname handling macros.
484 #define VNAME(dentry) ((char *) (dentry)->d_name.name)
485 #define VNAMELEN(dentry) ((dentry)->d_name.len)
486 #define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode))
489 * Vnode spinlock manipulation.
491 #define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock)
492 #define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s)
494 static __inline__
void vn_flagset(struct bhv_vnode
*vp
, uint flag
)
496 spin_lock(&vp
->v_lock
);
498 spin_unlock(&vp
->v_lock
);
501 static __inline__ uint
vn_flagclr(struct bhv_vnode
*vp
, uint flag
)
505 spin_lock(&vp
->v_lock
);
506 cleared
= (vp
->v_flag
& flag
);
508 spin_unlock(&vp
->v_lock
);
512 #define VMODIFY(vp) vn_flagset(vp, VMODIFIED)
513 #define VUNMODIFY(vp) vn_flagclr(vp, VMODIFIED)
514 #define VTRUNCATE(vp) vn_flagset(vp, VTRUNCATED)
515 #define VUNTRUNCATE(vp) vn_flagclr(vp, VTRUNCATED)
518 * Dealing with bad inodes
520 static inline void vn_mark_bad(struct bhv_vnode
*vp
)
522 make_bad_inode(vn_to_inode(vp
));
525 static inline int VN_BAD(struct bhv_vnode
*vp
)
527 return is_bad_inode(vn_to_inode(vp
));
531 * Extracting atime values in various formats
533 static inline void vn_atime_to_bstime(bhv_vnode_t
*vp
, xfs_bstime_t
*bs_atime
)
535 bs_atime
->tv_sec
= vp
->v_inode
.i_atime
.tv_sec
;
536 bs_atime
->tv_nsec
= vp
->v_inode
.i_atime
.tv_nsec
;
539 static inline void vn_atime_to_timespec(bhv_vnode_t
*vp
, struct timespec
*ts
)
541 *ts
= vp
->v_inode
.i_atime
;
544 static inline void vn_atime_to_time_t(bhv_vnode_t
*vp
, time_t *tt
)
546 *tt
= vp
->v_inode
.i_atime
.tv_sec
;
550 * Some useful predicates.
552 #define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping)
553 #define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages)
554 #define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \
556 #define VN_TRUNC(vp) ((vp)->v_flag & VTRUNCATED)
559 * Flags to vop_setattr/getattr.
561 #define ATTR_UTIME 0x01 /* non-default utime(2) request */
562 #define ATTR_DMI 0x08 /* invocation from a DMI function */
563 #define ATTR_LAZY 0x80 /* set/get attributes lazily */
564 #define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
565 #define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
566 #define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */
569 * Flags to vop_fsync/reclaim.
571 #define FSYNC_NOWAIT 0 /* asynchronous flush */
572 #define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
573 #define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
574 #define FSYNC_DATA 0x4 /* synchronous fsync of data only */
577 * Tracking vnode activity.
579 #if defined(XFS_VNODE_TRACE)
581 #define VNODE_TRACE_SIZE 16 /* number of trace entries */
582 #define VNODE_KTRACE_ENTRY 1
583 #define VNODE_KTRACE_EXIT 2
584 #define VNODE_KTRACE_HOLD 3
585 #define VNODE_KTRACE_REF 4
586 #define VNODE_KTRACE_RELE 5
588 extern void vn_trace_entry(struct bhv_vnode
*, const char *, inst_t
*);
589 extern void vn_trace_exit(struct bhv_vnode
*, const char *, inst_t
*);
590 extern void vn_trace_hold(struct bhv_vnode
*, char *, int, inst_t
*);
591 extern void vn_trace_ref(struct bhv_vnode
*, char *, int, inst_t
*);
592 extern void vn_trace_rele(struct bhv_vnode
*, char *, int, inst_t
*);
594 #define VN_TRACE(vp) \
595 vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
597 #define vn_trace_entry(a,b,c)
598 #define vn_trace_exit(a,b,c)
599 #define vn_trace_hold(a,b,c,d)
600 #define vn_trace_ref(a,b,c,d)
601 #define vn_trace_rele(a,b,c,d)
605 #endif /* __XFS_VNODE_H__ */