2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
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15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
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20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
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32 * Portions Copyright (c) 1989, 1993
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36 * modification, are permitted provided that the following conditions
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59 #ifndef __XFS_VNODE_H__
60 #define __XFS_VNODE_H__
66 struct attrlist_cursor_kern;
69 typedef xfs_ino_t vnumber_t;
70 typedef struct dentry vname_t;
71 typedef bhv_head_t vn_bhv_head_t;
74 * MP locking protocols:
75 * v_flag, v_vfsp VN_LOCK/VN_UNLOCK
77 typedef struct vnode {
78 __u32 v_flag; /* vnode flags (see below) */
79 struct vfs *v_vfsp; /* ptr to containing VFS */
80 vnumber_t v_number; /* in-core vnode number */
81 vn_bhv_head_t v_bh; /* behavior head */
82 spinlock_t v_lock; /* VN_LOCK/VN_UNLOCK */
83 #ifdef XFS_VNODE_TRACE
84 struct ktrace *v_trace; /* trace header structure */
86 struct inode v_inode; /* Linux inode */
87 /* inode MUST be last */
90 #define VN_ISLNK(vp) S_ISLNK((vp)->v_inode.i_mode)
91 #define VN_ISREG(vp) S_ISREG((vp)->v_inode.i_mode)
92 #define VN_ISDIR(vp) S_ISDIR((vp)->v_inode.i_mode)
93 #define VN_ISCHR(vp) S_ISCHR((vp)->v_inode.i_mode)
94 #define VN_ISBLK(vp) S_ISBLK((vp)->v_inode.i_mode)
96 #define v_fbhv v_bh.bh_first /* first behavior */
97 #define v_fops v_bh.bh_first->bd_ops /* first behavior ops */
99 #define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
100 #define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */
101 #define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
104 VN_BHV_UNKNOWN, /* not specified */
105 VN_BHV_XFS, /* xfs */
106 VN_BHV_DM, /* data migration */
107 VN_BHV_QM, /* quota manager */
108 VN_BHV_IO, /* IO path */
109 VN_BHV_END /* housekeeping end-of-range */
112 #define VNODE_POSITION_XFS (VNODE_POSITION_BASE)
113 #define VNODE_POSITION_DM (VNODE_POSITION_BASE+10)
114 #define VNODE_POSITION_QM (VNODE_POSITION_BASE+20)
115 #define VNODE_POSITION_IO (VNODE_POSITION_BASE+30)
118 * Macros for dealing with the behavior descriptor inside of the vnode.
120 #define BHV_TO_VNODE(bdp) ((vnode_t *)BHV_VOBJ(bdp))
121 #define BHV_TO_VNODE_NULL(bdp) ((vnode_t *)BHV_VOBJNULL(bdp))
123 #define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh)))
124 #define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
125 #define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp)
126 #define vn_bhv_lookup(bhp,ops) bhv_lookup(bhp,ops)
127 #define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops)
130 * Vnode to Linux inode mapping.
132 #define LINVFS_GET_VP(inode) ((vnode_t *)list_entry(inode, vnode_t, v_inode))
133 #define LINVFS_GET_IP(vp) (&(vp)->v_inode)
138 #define VINACT 0x1 /* vnode is being inactivated */
139 #define VRECLM 0x2 /* vnode is being reclaimed */
140 #define VWAIT 0x4 /* waiting for VINACT/VRECLM to end */
141 #define VMODIFIED 0x8 /* XFS inode state possibly differs */
142 /* to the Linux inode state. */
145 * Values for the VOP_RWLOCK and VOP_RWUNLOCK flags parameter.
147 typedef enum vrwlock {
151 VRWLOCK_WRITE_DIRECT,
157 * Return values for VOP_INACTIVE. A return value of
158 * VN_INACTIVE_NOCACHE implies that the file system behavior
159 * has disassociated its state and bhv_desc_t from the vnode.
161 #define VN_INACTIVE_CACHE 0
162 #define VN_INACTIVE_NOCACHE 1
165 * Values for the cmd code given to VOP_VNODE_CHANGE.
167 typedef enum vchange {
168 VCHANGE_FLAGS_FRLOCKS = 0,
169 VCHANGE_FLAGS_ENF_LOCKING = 1,
170 VCHANGE_FLAGS_TRUNCATED = 2,
171 VCHANGE_FLAGS_PAGE_DIRTY = 3,
172 VCHANGE_FLAGS_IOEXCL_COUNT = 4
176 typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
177 typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *,
178 const struct iovec *, unsigned int,
179 loff_t *, int, struct cred *);
180 typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *,
181 const struct iovec *, unsigned int,
182 loff_t *, int, struct cred *);
183 typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *,
184 loff_t *, int, size_t, read_actor_t,
185 void *, struct cred *);
186 typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
187 int, unsigned int, void __user *);
188 typedef int (*vop_getattr_t)(bhv_desc_t *, struct vattr *, int,
190 typedef int (*vop_setattr_t)(bhv_desc_t *, struct vattr *, int,
192 typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *);
193 typedef int (*vop_lookup_t)(bhv_desc_t *, vname_t *, vnode_t **,
194 int, vnode_t *, struct cred *);
195 typedef int (*vop_create_t)(bhv_desc_t *, vname_t *, struct vattr *,
196 vnode_t **, struct cred *);
197 typedef int (*vop_remove_t)(bhv_desc_t *, vname_t *, struct cred *);
198 typedef int (*vop_link_t)(bhv_desc_t *, vnode_t *, vname_t *,
200 typedef int (*vop_rename_t)(bhv_desc_t *, vname_t *, vnode_t *, vname_t *,
202 typedef int (*vop_mkdir_t)(bhv_desc_t *, vname_t *, struct vattr *,
203 vnode_t **, struct cred *);
204 typedef int (*vop_rmdir_t)(bhv_desc_t *, vname_t *, struct cred *);
205 typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
207 typedef int (*vop_symlink_t)(bhv_desc_t *, vname_t *, struct vattr *,
208 char *, vnode_t **, struct cred *);
209 typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int,
211 typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *,
212 xfs_off_t, xfs_off_t);
213 typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *);
214 typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *);
215 typedef int (*vop_release_t)(bhv_desc_t *);
216 typedef int (*vop_rwlock_t)(bhv_desc_t *, vrwlock_t);
217 typedef void (*vop_rwunlock_t)(bhv_desc_t *, vrwlock_t);
218 typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int,
219 struct xfs_iomap *, int *);
220 typedef int (*vop_reclaim_t)(bhv_desc_t *);
221 typedef int (*vop_attr_get_t)(bhv_desc_t *, char *, char *, int *, int,
223 typedef int (*vop_attr_set_t)(bhv_desc_t *, char *, char *, int, int,
225 typedef int (*vop_attr_remove_t)(bhv_desc_t *, char *, int, struct cred *);
226 typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int,
227 struct attrlist_cursor_kern *, struct cred *);
228 typedef void (*vop_link_removed_t)(bhv_desc_t *, vnode_t *, int);
229 typedef void (*vop_vnode_change_t)(bhv_desc_t *, vchange_t, __psint_t);
230 typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
231 typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
232 typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t,
234 typedef int (*vop_iflush_t)(bhv_desc_t *, int);
237 typedef struct vnodeops {
238 bhv_position_t vn_position; /* position within behavior chain */
241 vop_write_t vop_write;
242 vop_sendfile_t vop_sendfile;
243 vop_ioctl_t vop_ioctl;
244 vop_getattr_t vop_getattr;
245 vop_setattr_t vop_setattr;
246 vop_access_t vop_access;
247 vop_lookup_t vop_lookup;
248 vop_create_t vop_create;
249 vop_remove_t vop_remove;
251 vop_rename_t vop_rename;
252 vop_mkdir_t vop_mkdir;
253 vop_rmdir_t vop_rmdir;
254 vop_readdir_t vop_readdir;
255 vop_symlink_t vop_symlink;
256 vop_readlink_t vop_readlink;
257 vop_fsync_t vop_fsync;
258 vop_inactive_t vop_inactive;
260 vop_rwlock_t vop_rwlock;
261 vop_rwunlock_t vop_rwunlock;
263 vop_reclaim_t vop_reclaim;
264 vop_attr_get_t vop_attr_get;
265 vop_attr_set_t vop_attr_set;
266 vop_attr_remove_t vop_attr_remove;
267 vop_attr_list_t vop_attr_list;
268 vop_link_removed_t vop_link_removed;
269 vop_vnode_change_t vop_vnode_change;
270 vop_ptossvp_t vop_tosspages;
271 vop_pflushinvalvp_t vop_flushinval_pages;
272 vop_pflushvp_t vop_flush_pages;
273 vop_release_t vop_release;
274 vop_iflush_t vop_iflush;
280 #define _VOP_(op, vp) (*((vnodeops_t *)(vp)->v_fops)->op)
282 #define VOP_READ(vp,file,iov,segs,offset,ioflags,cr,rv) \
283 rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
284 #define VOP_WRITE(vp,file,iov,segs,offset,ioflags,cr,rv) \
285 rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
286 #define VOP_SENDFILE(vp,f,off,ioflags,cnt,act,targ,cr,rv) \
287 rv = _VOP_(vop_sendfile, vp)((vp)->v_fbhv,f,off,ioflags,cnt,act,targ,cr)
288 #define VOP_BMAP(vp,of,sz,rw,b,n,rv) \
289 rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n)
290 #define VOP_OPEN(vp, cr, rv) \
291 rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr)
292 #define VOP_GETATTR(vp, vap, f, cr, rv) \
293 rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr)
294 #define VOP_SETATTR(vp, vap, f, cr, rv) \
295 rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr)
296 #define VOP_ACCESS(vp, mode, cr, rv) \
297 rv = _VOP_(vop_access, vp)((vp)->v_fbhv, mode, cr)
298 #define VOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv) \
299 rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr)
300 #define VOP_CREATE(dvp,d,vap,vpp,cr,rv) \
301 rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr)
302 #define VOP_REMOVE(dvp,d,cr,rv) \
303 rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr)
304 #define VOP_LINK(tdvp,fvp,d,cr,rv) \
305 rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr)
306 #define VOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv) \
307 rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr)
308 #define VOP_MKDIR(dp,d,vap,vpp,cr,rv) \
309 rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr)
310 #define VOP_RMDIR(dp,d,cr,rv) \
311 rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr)
312 #define VOP_READDIR(vp,uiop,cr,eofp,rv) \
313 rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp)
314 #define VOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv) \
315 rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr)
316 #define VOP_READLINK(vp,uiop,fl,cr,rv) \
317 rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,fl,cr)
318 #define VOP_FSYNC(vp,f,cr,b,e,rv) \
319 rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e)
320 #define VOP_INACTIVE(vp, cr, rv) \
321 rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr)
322 #define VOP_RELEASE(vp, rv) \
323 rv = _VOP_(vop_release, vp)((vp)->v_fbhv)
324 #define VOP_FID2(vp, fidp, rv) \
325 rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp)
326 #define VOP_RWLOCK(vp,i) \
327 (void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
328 #define VOP_RWLOCK_TRY(vp,i) \
329 _VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
330 #define VOP_RWUNLOCK(vp,i) \
331 (void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i)
332 #define VOP_FRLOCK(vp,c,fl,flags,offset,fr,rv) \
333 rv = _VOP_(vop_frlock, vp)((vp)->v_fbhv,c,fl,flags,offset,fr)
334 #define VOP_RECLAIM(vp, rv) \
335 rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv)
336 #define VOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv) \
337 rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred)
338 #define VOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv) \
339 rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred)
340 #define VOP_ATTR_REMOVE(vp, name, flags, cred, rv) \
341 rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred)
342 #define VOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv) \
343 rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred)
344 #define VOP_LINK_REMOVED(vp, dvp, linkzero) \
345 (void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero)
346 #define VOP_VNODE_CHANGE(vp, cmd, val) \
347 (void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val)
349 * These are page cache functions that now go thru VOPs.
350 * 'last' parameter is unused and left in for IRIX compatibility
352 #define VOP_TOSS_PAGES(vp, first, last, fiopt) \
353 _VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt)
355 * 'last' parameter is unused and left in for IRIX compatibility
357 #define VOP_FLUSHINVAL_PAGES(vp, first, last, fiopt) \
358 _VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt)
360 * 'last' parameter is unused and left in for IRIX compatibility
362 #define VOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv) \
363 rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt)
364 #define VOP_IOCTL(vp, inode, filp, fl, cmd, arg, rv) \
365 rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,fl,cmd,arg)
366 #define VOP_IFLUSH(vp, flags, rv) \
367 rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags)
370 * Flags for read/write calls - same values as IRIX
372 #define IO_ISAIO 0x00001 /* don't wait for completion */
373 #define IO_ISDIRECT 0x00004 /* bypass page cache */
374 #define IO_INVIS 0x00020 /* don't update inode timestamps */
377 * Flags for VOP_IFLUSH call
379 #define FLUSH_SYNC 1 /* wait for flush to complete */
380 #define FLUSH_INODE 2 /* flush the inode itself */
381 #define FLUSH_LOG 4 /* force the last log entry for
382 * this inode out to disk */
385 * Flush/Invalidate options for VOP_TOSS_PAGES, VOP_FLUSHINVAL_PAGES and
388 #define FI_NONE 0 /* none */
389 #define FI_REMAPF 1 /* Do a remapf prior to the operation */
390 #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
391 Prevent VM access to the pages until
392 the operation completes. */
395 * Vnode attributes. va_mask indicates those attributes the caller
396 * wants to set or extract.
398 typedef struct vattr {
399 int va_mask; /* bit-mask of attributes present */
400 mode_t va_mode; /* file access mode and type */
401 xfs_nlink_t va_nlink; /* number of references to file */
402 uid_t va_uid; /* owner user id */
403 gid_t va_gid; /* owner group id */
404 xfs_ino_t va_nodeid; /* file id */
405 xfs_off_t va_size; /* file size in bytes */
406 u_long va_blocksize; /* blocksize preferred for i/o */
407 struct timespec va_atime; /* time of last access */
408 struct timespec va_mtime; /* time of last modification */
409 struct timespec va_ctime; /* time file changed */
410 u_int va_gen; /* generation number of file */
411 xfs_dev_t va_rdev; /* device the special file represents */
412 __int64_t va_nblocks; /* number of blocks allocated */
413 u_long va_xflags; /* random extended file flags */
414 u_long va_extsize; /* file extent size */
415 u_long va_nextents; /* number of extents in file */
416 u_long va_anextents; /* number of attr extents in file */
417 prid_t va_projid; /* project id */
421 * setattr or getattr attributes
423 #define XFS_AT_TYPE 0x00000001
424 #define XFS_AT_MODE 0x00000002
425 #define XFS_AT_UID 0x00000004
426 #define XFS_AT_GID 0x00000008
427 #define XFS_AT_FSID 0x00000010
428 #define XFS_AT_NODEID 0x00000020
429 #define XFS_AT_NLINK 0x00000040
430 #define XFS_AT_SIZE 0x00000080
431 #define XFS_AT_ATIME 0x00000100
432 #define XFS_AT_MTIME 0x00000200
433 #define XFS_AT_CTIME 0x00000400
434 #define XFS_AT_RDEV 0x00000800
435 #define XFS_AT_BLKSIZE 0x00001000
436 #define XFS_AT_NBLOCKS 0x00002000
437 #define XFS_AT_VCODE 0x00004000
438 #define XFS_AT_MAC 0x00008000
439 #define XFS_AT_UPDATIME 0x00010000
440 #define XFS_AT_UPDMTIME 0x00020000
441 #define XFS_AT_UPDCTIME 0x00040000
442 #define XFS_AT_ACL 0x00080000
443 #define XFS_AT_CAP 0x00100000
444 #define XFS_AT_INF 0x00200000
445 #define XFS_AT_XFLAGS 0x00400000
446 #define XFS_AT_EXTSIZE 0x00800000
447 #define XFS_AT_NEXTENTS 0x01000000
448 #define XFS_AT_ANEXTENTS 0x02000000
449 #define XFS_AT_PROJID 0x04000000
450 #define XFS_AT_SIZE_NOPERM 0x08000000
451 #define XFS_AT_GENCOUNT 0x10000000
453 #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
454 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
455 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
456 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
457 XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
458 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
460 #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
461 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
462 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
463 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
465 #define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
467 #define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
469 #define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
470 XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
471 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
476 #define VSUID S_ISUID /* set user id on execution */
477 #define VSGID S_ISGID /* set group id on execution */
478 #define VSVTX S_ISVTX /* save swapped text even after use */
479 #define VREAD S_IRUSR /* read, write, execute permissions */
480 #define VWRITE S_IWUSR
481 #define VEXEC S_IXUSR
483 #define MODEMASK S_IALLUGO /* mode bits plus permission bits */
486 * Check whether mandatory file locking is enabled.
488 #define MANDLOCK(vp, mode) \
489 (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
491 extern void vn_init(void);
492 extern int vn_wait(struct vnode *);
493 extern vnode_t *vn_initialize(struct inode *);
496 * vnode_map structures _must_ match vn_epoch and vnode structure sizes.
498 typedef struct vnode_map {
500 vnumber_t v_number; /* in-core vnode number */
501 xfs_ino_t v_ino; /* inode # */
504 #define VMAP(vp, vmap) {(vmap).v_vfsp = (vp)->v_vfsp, \
505 (vmap).v_number = (vp)->v_number, \
506 (vmap).v_ino = (vp)->v_inode.i_ino; }
508 extern void vn_purge(struct vnode *, vmap_t *);
509 extern int vn_revalidate(struct vnode *);
510 extern void vn_revalidate_core(struct vnode *, vattr_t *);
511 extern void vn_remove(struct vnode *);
513 static inline int vn_count(struct vnode *vp)
515 return atomic_read(&LINVFS_GET_IP(vp)->i_count);
519 * Vnode reference counting functions (and macros for compatibility).
521 extern vnode_t *vn_hold(struct vnode *);
522 extern void vn_rele(struct vnode *);
524 #if defined(XFS_VNODE_TRACE)
525 #define VN_HOLD(vp) \
526 ((void)vn_hold(vp), \
527 vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
528 #define VN_RELE(vp) \
529 (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
530 iput(LINVFS_GET_IP(vp)))
532 #define VN_HOLD(vp) ((void)vn_hold(vp))
533 #define VN_RELE(vp) (iput(LINVFS_GET_IP(vp)))
536 static inline struct vnode *vn_grab(struct vnode *vp)
538 struct inode *inode = igrab(LINVFS_GET_IP(vp));
539 return inode ? LINVFS_GET_VP(inode) : NULL;
543 * Vname handling macros.
545 #define VNAME(dentry) ((char *) (dentry)->d_name.name)
546 #define VNAMELEN(dentry) ((dentry)->d_name.len)
547 #define VNAME_TO_VNODE(dentry) (LINVFS_GET_VP((dentry)->d_inode))
550 * Vnode spinlock manipulation.
552 #define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock)
553 #define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s)
554 #define VN_FLAGSET(vp,b) vn_flagset(vp,b)
555 #define VN_FLAGCLR(vp,b) vn_flagclr(vp,b)
557 static __inline__ void vn_flagset(struct vnode *vp, uint flag)
559 spin_lock(&vp->v_lock);
561 spin_unlock(&vp->v_lock);
564 static __inline__ void vn_flagclr(struct vnode *vp, uint flag)
566 spin_lock(&vp->v_lock);
568 spin_unlock(&vp->v_lock);
572 * Update modify/access/change times on the vnode
574 #define VN_MTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_mtime = *(tvp))
575 #define VN_ATIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_atime = *(tvp))
576 #define VN_CTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_ctime = *(tvp))
579 * Dealing with bad inodes
581 static inline void vn_mark_bad(struct vnode *vp)
583 make_bad_inode(LINVFS_GET_IP(vp));
586 static inline int VN_BAD(struct vnode *vp)
588 return is_bad_inode(LINVFS_GET_IP(vp));
592 * Some useful predicates.
594 #define VN_MAPPED(vp) mapping_mapped(LINVFS_GET_IP(vp)->i_mapping)
595 #define VN_CACHED(vp) (LINVFS_GET_IP(vp)->i_mapping->nrpages)
596 #define VN_DIRTY(vp) mapping_tagged(LINVFS_GET_IP(vp)->i_mapping, \
598 #define VMODIFY(vp) VN_FLAGSET(vp, VMODIFIED)
599 #define VUNMODIFY(vp) VN_FLAGCLR(vp, VMODIFIED)
602 * Flags to VOP_SETATTR/VOP_GETATTR.
604 #define ATTR_UTIME 0x01 /* non-default utime(2) request */
605 #define ATTR_DMI 0x08 /* invocation from a DMI function */
606 #define ATTR_LAZY 0x80 /* set/get attributes lazily */
607 #define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
608 #define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
611 * Flags to VOP_FSYNC and VOP_RECLAIM.
613 #define FSYNC_NOWAIT 0 /* asynchronous flush */
614 #define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
615 #define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
616 #define FSYNC_DATA 0x4 /* synchronous fsync of data only */
619 * Tracking vnode activity.
621 #if defined(XFS_VNODE_TRACE)
623 #define VNODE_TRACE_SIZE 16 /* number of trace entries */
624 #define VNODE_KTRACE_ENTRY 1
625 #define VNODE_KTRACE_EXIT 2
626 #define VNODE_KTRACE_HOLD 3
627 #define VNODE_KTRACE_REF 4
628 #define VNODE_KTRACE_RELE 5
630 extern void vn_trace_entry(struct vnode *, const char *, inst_t *);
631 extern void vn_trace_exit(struct vnode *, const char *, inst_t *);
632 extern void vn_trace_hold(struct vnode *, char *, int, inst_t *);
633 extern void vn_trace_ref(struct vnode *, char *, int, inst_t *);
634 extern void vn_trace_rele(struct vnode *, char *, int, inst_t *);
636 #define VN_TRACE(vp) \
637 vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
639 #define vn_trace_entry(a,b,c)
640 #define vn_trace_exit(a,b,c)
641 #define vn_trace_hold(a,b,c,d)
642 #define vn_trace_ref(a,b,c,d)
643 #define vn_trace_rele(a,b,c,d)
647 #endif /* __XFS_VNODE_H__ */