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[XFS] getattr can return an error code, so propogate any from lower
[deliverable/linux.git] / fs / xfs / linux-2.6 / xfs_vnode.h
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1da177e4 1/*
7b718769
NS		 2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS		 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
1da177e4
LT		 7 * published by the Free Software Foundation.
8 *
7b718769
NS		 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.
1da177e4 13 *
7b718769
NS		 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
1da177e4
LT		 17 *
18 * Portions Copyright (c) 1989, 1993
19 * The Regents of the University of California. All rights reserved.
20 *
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
23 * are met:
24 * 1. Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in the
28 * documentation and/or other materials provided with the distribution.
29 * 3. Neither the name of the University nor the names of its contributors
30 * may be used to endorse or promote products derived from this software
31 * without specific prior written permission.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 */
45#ifndef __XFS_VNODE_H__
46#define __XFS_VNODE_H__
47
48struct uio;
49struct file;
50struct vattr;
51struct xfs_iomap;
52struct attrlist_cursor_kern;
53
1da177e4
LT		 54
55typedef xfs_ino_t vnumber_t;
56typedef struct dentry vname_t;
57typedef bhv_head_t vn_bhv_head_t;
58
59/*
60 * MP locking protocols:
61 * v_flag, v_vfsp VN_LOCK/VN_UNLOCK
1da177e4
LT		 62 */
63typedef struct vnode {
64 __u32 v_flag; /* vnode flags (see below) */
1da177e4
LT		 65 struct vfs *v_vfsp; /* ptr to containing VFS */
66 vnumber_t v_number; /* in-core vnode number */
67 vn_bhv_head_t v_bh; /* behavior head */
68 spinlock_t v_lock; /* VN_LOCK/VN_UNLOCK */
51c91ed5 69 atomic_t v_iocount; /* outstanding I/O count */
1da177e4
LT		 70#ifdef XFS_VNODE_TRACE
71 struct ktrace *v_trace; /* trace header structure */
72#endif
9effd8e6
ES		 73 struct inode v_inode; /* Linux inode */
74 /* inode MUST be last */
1da177e4
LT		 75} vnode_t;
76
0432dab2
CH		 77#define VN_ISLNK(vp) S_ISLNK((vp)->v_inode.i_mode)
78#define VN_ISREG(vp) S_ISREG((vp)->v_inode.i_mode)
79#define VN_ISDIR(vp) S_ISDIR((vp)->v_inode.i_mode)
80#define VN_ISCHR(vp) S_ISCHR((vp)->v_inode.i_mode)
81#define VN_ISBLK(vp) S_ISBLK((vp)->v_inode.i_mode)
82
1da177e4
LT		 83#define v_fbhv v_bh.bh_first /* first behavior */
84#define v_fops v_bh.bh_first->bd_ops /* first behavior ops */
85
86#define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
87#define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */
88#define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
89
90typedef enum {
91 VN_BHV_UNKNOWN, /* not specified */
92 VN_BHV_XFS, /* xfs */
93 VN_BHV_DM, /* data migration */
94 VN_BHV_QM, /* quota manager */
95 VN_BHV_IO, /* IO path */
96 VN_BHV_END /* housekeeping end-of-range */
97} vn_bhv_t;
98
99#define VNODE_POSITION_XFS (VNODE_POSITION_BASE)
100#define VNODE_POSITION_DM (VNODE_POSITION_BASE+10)
101#define VNODE_POSITION_QM (VNODE_POSITION_BASE+20)
102#define VNODE_POSITION_IO (VNODE_POSITION_BASE+30)
103
104/*
105 * Macros for dealing with the behavior descriptor inside of the vnode.
106 */
107#define BHV_TO_VNODE(bdp) ((vnode_t *)BHV_VOBJ(bdp))
108#define BHV_TO_VNODE_NULL(bdp) ((vnode_t *)BHV_VOBJNULL(bdp))
109
110#define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh)))
111#define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
112#define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp)
113#define vn_bhv_lookup(bhp,ops) bhv_lookup(bhp,ops)
114#define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops)
115
116/*
117 * Vnode to Linux inode mapping.
118 */
ec86dc02
NS		 119static inline struct vnode *vn_from_inode(struct inode *inode)
120{
121 return (vnode_t *)list_entry(inode, vnode_t, v_inode);
122}
123static inline struct inode *vn_to_inode(struct vnode *vnode)
124{
125 return &vnode->v_inode;
126}
1da177e4 127
1da177e4
LT		 128/*
129 * Vnode flags.
130 */
1da177e4
LT		 131#define VMODIFIED 0x8 /* XFS inode state possibly differs */
132 /* to the Linux inode state. */
133
134/*
135 * Values for the VOP_RWLOCK and VOP_RWUNLOCK flags parameter.
136 */
137typedef enum vrwlock {
138 VRWLOCK_NONE,
139 VRWLOCK_READ,
140 VRWLOCK_WRITE,
141 VRWLOCK_WRITE_DIRECT,
142 VRWLOCK_TRY_READ,
143 VRWLOCK_TRY_WRITE
144} vrwlock_t;
145
146/*
147 * Return values for VOP_INACTIVE. A return value of
148 * VN_INACTIVE_NOCACHE implies that the file system behavior
149 * has disassociated its state and bhv_desc_t from the vnode.
150 */
151#define VN_INACTIVE_CACHE 0
152#define VN_INACTIVE_NOCACHE 1
153
154/*
155 * Values for the cmd code given to VOP_VNODE_CHANGE.
156 */
157typedef enum vchange {
158 VCHANGE_FLAGS_FRLOCKS = 0,
159 VCHANGE_FLAGS_ENF_LOCKING = 1,
160 VCHANGE_FLAGS_TRUNCATED = 2,
161 VCHANGE_FLAGS_PAGE_DIRTY = 3,
162 VCHANGE_FLAGS_IOEXCL_COUNT = 4
163} vchange_t;
164
165
166typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
167typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *,
168 const struct iovec *, unsigned int,
169 loff_t *, int, struct cred *);
170typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *,
171 const struct iovec *, unsigned int,
172 loff_t *, int, struct cred *);
173typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *,
174 loff_t *, int, size_t, read_actor_t,
175 void *, struct cred *);
cbb7e577 176typedef ssize_t (*vop_splice_read_t)(bhv_desc_t *, struct file *, loff_t *,
3a326a2c 177 struct pipe_inode_info *, size_t, int, int,
1b895840 178 struct cred *);
3a326a2c 179typedef ssize_t (*vop_splice_write_t)(bhv_desc_t *, struct pipe_inode_info *,
cbb7e577 180 struct file *, loff_t *, size_t, int, int,
1b895840 181 struct cred *);
1da177e4
LT		 182typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
183 int, unsigned int, void __user *);
184typedef int (*vop_getattr_t)(bhv_desc_t *, struct vattr *, int,
185 struct cred *);
186typedef int (*vop_setattr_t)(bhv_desc_t *, struct vattr *, int,
187 struct cred *);
188typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *);
189typedef int (*vop_lookup_t)(bhv_desc_t *, vname_t *, vnode_t **,
190 int, vnode_t *, struct cred *);
191typedef int (*vop_create_t)(bhv_desc_t *, vname_t *, struct vattr *,
192 vnode_t **, struct cred *);
193typedef int (*vop_remove_t)(bhv_desc_t *, vname_t *, struct cred *);
194typedef int (*vop_link_t)(bhv_desc_t *, vnode_t *, vname_t *,
195 struct cred *);
196typedef int (*vop_rename_t)(bhv_desc_t *, vname_t *, vnode_t *, vname_t *,
197 struct cred *);
198typedef int (*vop_mkdir_t)(bhv_desc_t *, vname_t *, struct vattr *,
199 vnode_t **, struct cred *);
200typedef int (*vop_rmdir_t)(bhv_desc_t *, vname_t *, struct cred *);
201typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
202 int *);
203typedef int (*vop_symlink_t)(bhv_desc_t *, vname_t *, struct vattr *,
204 char *, vnode_t **, struct cred *);
205typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int,
206 struct cred *);
207typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *,
208 xfs_off_t, xfs_off_t);
209typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *);
210typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *);
211typedef int (*vop_release_t)(bhv_desc_t *);
212typedef int (*vop_rwlock_t)(bhv_desc_t *, vrwlock_t);
213typedef void (*vop_rwunlock_t)(bhv_desc_t *, vrwlock_t);
214typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int,
215 struct xfs_iomap *, int *);
216typedef int (*vop_reclaim_t)(bhv_desc_t *);
80cce779
NS		 217typedef int (*vop_attr_get_t)(bhv_desc_t *, const char *, char *, int *,
218 int, struct cred *);
219typedef int (*vop_attr_set_t)(bhv_desc_t *, const char *, char *, int,
220 int, struct cred *);
221typedef int (*vop_attr_remove_t)(bhv_desc_t *, const char *,
222 int, struct cred *);
1da177e4
LT		 223typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int,
224 struct attrlist_cursor_kern *, struct cred *);
225typedef void (*vop_link_removed_t)(bhv_desc_t *, vnode_t *, int);
226typedef void (*vop_vnode_change_t)(bhv_desc_t *, vchange_t, __psint_t);
227typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
228typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
229typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t,
230 uint64_t, int);
231typedef int (*vop_iflush_t)(bhv_desc_t *, int);
232
233
234typedef struct vnodeops {
235 bhv_position_t vn_position; /* position within behavior chain */
236 vop_open_t vop_open;
237 vop_read_t vop_read;
238 vop_write_t vop_write;
239 vop_sendfile_t vop_sendfile;
1b895840
NS		 240 vop_splice_read_t vop_splice_read;
241 vop_splice_write_t vop_splice_write;
1da177e4
LT		 242 vop_ioctl_t vop_ioctl;
243 vop_getattr_t vop_getattr;
244 vop_setattr_t vop_setattr;
245 vop_access_t vop_access;
246 vop_lookup_t vop_lookup;
247 vop_create_t vop_create;
248 vop_remove_t vop_remove;
249 vop_link_t vop_link;
250 vop_rename_t vop_rename;
251 vop_mkdir_t vop_mkdir;
252 vop_rmdir_t vop_rmdir;
253 vop_readdir_t vop_readdir;
254 vop_symlink_t vop_symlink;
255 vop_readlink_t vop_readlink;
256 vop_fsync_t vop_fsync;
257 vop_inactive_t vop_inactive;
258 vop_fid2_t vop_fid2;
259 vop_rwlock_t vop_rwlock;
260 vop_rwunlock_t vop_rwunlock;
261 vop_bmap_t vop_bmap;
262 vop_reclaim_t vop_reclaim;
263 vop_attr_get_t vop_attr_get;
264 vop_attr_set_t vop_attr_set;
265 vop_attr_remove_t vop_attr_remove;
266 vop_attr_list_t vop_attr_list;
267 vop_link_removed_t vop_link_removed;
268 vop_vnode_change_t vop_vnode_change;
269 vop_ptossvp_t vop_tosspages;
270 vop_pflushinvalvp_t vop_flushinval_pages;
271 vop_pflushvp_t vop_flush_pages;
272 vop_release_t vop_release;
273 vop_iflush_t vop_iflush;
274} vnodeops_t;
275
276/*
277 * VOP's.
278 */
279#define _VOP_(op, vp) (*((vnodeops_t *)(vp)->v_fops)->op)
280
281#define VOP_READ(vp,file,iov,segs,offset,ioflags,cr,rv) \
282 rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
283#define VOP_WRITE(vp,file,iov,segs,offset,ioflags,cr,rv) \
284 rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
285#define VOP_SENDFILE(vp,f,off,ioflags,cnt,act,targ,cr,rv) \
286 rv = _VOP_(vop_sendfile, vp)((vp)->v_fbhv,f,off,ioflags,cnt,act,targ,cr)
cbb7e577
JA		 287#define VOP_SPLICE_READ(vp,f,o,pipe,cnt,fl,iofl,cr,rv) \
288 rv = _VOP_(vop_splice_read, vp)((vp)->v_fbhv,f,o,pipe,cnt,fl,iofl,cr)
289#define VOP_SPLICE_WRITE(vp,f,o,pipe,cnt,fl,iofl,cr,rv) \
290 rv = _VOP_(vop_splice_write, vp)((vp)->v_fbhv,f,o,pipe,cnt,fl,iofl,cr)
1da177e4
LT		 291#define VOP_BMAP(vp,of,sz,rw,b,n,rv) \
292 rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n)
293#define VOP_OPEN(vp, cr, rv) \
294 rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr)
295#define VOP_GETATTR(vp, vap, f, cr, rv) \
296 rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr)
297#define VOP_SETATTR(vp, vap, f, cr, rv) \
298 rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr)
299#define VOP_ACCESS(vp, mode, cr, rv) \
300 rv = _VOP_(vop_access, vp)((vp)->v_fbhv, mode, cr)
301#define VOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv) \
302 rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr)
303#define VOP_CREATE(dvp,d,vap,vpp,cr,rv) \
304 rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr)
305#define VOP_REMOVE(dvp,d,cr,rv) \
306 rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr)
307#define VOP_LINK(tdvp,fvp,d,cr,rv) \
308 rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr)
309#define VOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv) \
310 rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr)
311#define VOP_MKDIR(dp,d,vap,vpp,cr,rv) \
312 rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr)
313#define VOP_RMDIR(dp,d,cr,rv) \
314 rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr)
315#define VOP_READDIR(vp,uiop,cr,eofp,rv) \
316 rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp)
317#define VOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv) \
318 rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr)
319#define VOP_READLINK(vp,uiop,fl,cr,rv) \
320 rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,fl,cr)
321#define VOP_FSYNC(vp,f,cr,b,e,rv) \
322 rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e)
323#define VOP_INACTIVE(vp, cr, rv) \
324 rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr)
325#define VOP_RELEASE(vp, rv) \
326 rv = _VOP_(vop_release, vp)((vp)->v_fbhv)
327#define VOP_FID2(vp, fidp, rv) \
328 rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp)
329#define VOP_RWLOCK(vp,i) \
330 (void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
331#define VOP_RWLOCK_TRY(vp,i) \
332 _VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
333#define VOP_RWUNLOCK(vp,i) \
334 (void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i)
335#define VOP_FRLOCK(vp,c,fl,flags,offset,fr,rv) \
336 rv = _VOP_(vop_frlock, vp)((vp)->v_fbhv,c,fl,flags,offset,fr)
337#define VOP_RECLAIM(vp, rv) \
338 rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv)
339#define VOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv) \
340 rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred)
341#define VOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv) \
342 rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred)
343#define VOP_ATTR_REMOVE(vp, name, flags, cred, rv) \
344 rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred)
345#define VOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv) \
346 rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred)
347#define VOP_LINK_REMOVED(vp, dvp, linkzero) \
348 (void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero)
349#define VOP_VNODE_CHANGE(vp, cmd, val) \
350 (void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val)
351/*
352 * These are page cache functions that now go thru VOPs.
353 * 'last' parameter is unused and left in for IRIX compatibility
354 */
355#define VOP_TOSS_PAGES(vp, first, last, fiopt) \
356 _VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt)
357/*
358 * 'last' parameter is unused and left in for IRIX compatibility
359 */
360#define VOP_FLUSHINVAL_PAGES(vp, first, last, fiopt) \
361 _VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt)
362/*
363 * 'last' parameter is unused and left in for IRIX compatibility
364 */
365#define VOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv) \
366 rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt)
367#define VOP_IOCTL(vp, inode, filp, fl, cmd, arg, rv) \
368 rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,fl,cmd,arg)
369#define VOP_IFLUSH(vp, flags, rv) \
370 rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags)
371
372/*
373 * Flags for read/write calls - same values as IRIX
374 */
375#define IO_ISAIO 0x00001 /* don't wait for completion */
376#define IO_ISDIRECT 0x00004 /* bypass page cache */
377#define IO_INVIS 0x00020 /* don't update inode timestamps */
378
379/*
380 * Flags for VOP_IFLUSH call
381 */
382#define FLUSH_SYNC 1 /* wait for flush to complete */
383#define FLUSH_INODE 2 /* flush the inode itself */
384#define FLUSH_LOG 4 /* force the last log entry for
385 * this inode out to disk */
386
387/*
388 * Flush/Invalidate options for VOP_TOSS_PAGES, VOP_FLUSHINVAL_PAGES and
389 * VOP_FLUSH_PAGES.
390 */
391#define FI_NONE 0 /* none */
392#define FI_REMAPF 1 /* Do a remapf prior to the operation */
393#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
394 Prevent VM access to the pages until
395 the operation completes. */
396
397/*
398 * Vnode attributes. va_mask indicates those attributes the caller
399 * wants to set or extract.
400 */
401typedef struct vattr {
402 int va_mask; /* bit-mask of attributes present */
1da177e4 403 mode_t va_mode; /* file access mode and type */
31b084ae 404 xfs_nlink_t va_nlink; /* number of references to file */
1da177e4
LT		 405 uid_t va_uid; /* owner user id */
406 gid_t va_gid; /* owner group id */
407 xfs_ino_t va_nodeid; /* file id */
408 xfs_off_t va_size; /* file size in bytes */
409 u_long va_blocksize; /* blocksize preferred for i/o */
410 struct timespec va_atime; /* time of last access */
411 struct timespec va_mtime; /* time of last modification */
412 struct timespec va_ctime; /* time file changed */
413 u_int va_gen; /* generation number of file */
414 xfs_dev_t va_rdev; /* device the special file represents */
415 __int64_t va_nblocks; /* number of blocks allocated */
416 u_long va_xflags; /* random extended file flags */
417 u_long va_extsize; /* file extent size */
418 u_long va_nextents; /* number of extents in file */
419 u_long va_anextents; /* number of attr extents in file */
b74e2159 420 prid_t va_projid; /* project id */
1da177e4
LT		 421} vattr_t;
422
423/*
424 * setattr or getattr attributes
425 */
426#define XFS_AT_TYPE 0x00000001
427#define XFS_AT_MODE 0x00000002
428#define XFS_AT_UID 0x00000004
429#define XFS_AT_GID 0x00000008
430#define XFS_AT_FSID 0x00000010
431#define XFS_AT_NODEID 0x00000020
432#define XFS_AT_NLINK 0x00000040
433#define XFS_AT_SIZE 0x00000080
434#define XFS_AT_ATIME 0x00000100
435#define XFS_AT_MTIME 0x00000200
436#define XFS_AT_CTIME 0x00000400
437#define XFS_AT_RDEV 0x00000800
438#define XFS_AT_BLKSIZE 0x00001000
439#define XFS_AT_NBLOCKS 0x00002000
440#define XFS_AT_VCODE 0x00004000
441#define XFS_AT_MAC 0x00008000
442#define XFS_AT_UPDATIME 0x00010000
443#define XFS_AT_UPDMTIME 0x00020000
444#define XFS_AT_UPDCTIME 0x00040000
445#define XFS_AT_ACL 0x00080000
446#define XFS_AT_CAP 0x00100000
447#define XFS_AT_INF 0x00200000
448#define XFS_AT_XFLAGS 0x00400000
449#define XFS_AT_EXTSIZE 0x00800000
450#define XFS_AT_NEXTENTS 0x01000000
451#define XFS_AT_ANEXTENTS 0x02000000
452#define XFS_AT_PROJID 0x04000000
453#define XFS_AT_SIZE_NOPERM 0x08000000
454#define XFS_AT_GENCOUNT 0x10000000
455
456#define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
457 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
458 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
459 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
460 XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
461 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
462
463#define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
464 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
465 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
466 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
467
468#define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
469
470#define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
471
472#define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
473 XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
474 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
475
476/*
477 * Modes.
478 */
479#define VSUID S_ISUID /* set user id on execution */
480#define VSGID S_ISGID /* set group id on execution */
481#define VSVTX S_ISVTX /* save swapped text even after use */
482#define VREAD S_IRUSR /* read, write, execute permissions */
483#define VWRITE S_IWUSR
484#define VEXEC S_IXUSR
485
486#define MODEMASK S_IALLUGO /* mode bits plus permission bits */
487
488/*
489 * Check whether mandatory file locking is enabled.
490 */
491#define MANDLOCK(vp, mode) \
0432dab2 492 (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
1da177e4
LT		 493
494extern void vn_init(void);
1da177e4
LT		 495extern vnode_t *vn_initialize(struct inode *);
496
1da177e4
LT		 497/*
498 * vnode_map structures _must_ match vn_epoch and vnode structure sizes.
499 */
500typedef struct vnode_map {
501 vfs_t *v_vfsp;
502 vnumber_t v_number; /* in-core vnode number */
503 xfs_ino_t v_ino; /* inode # */
504} vmap_t;
505
506#define VMAP(vp, vmap) {(vmap).v_vfsp = (vp)->v_vfsp, \
507 (vmap).v_number = (vp)->v_number, \
508 (vmap).v_ino = (vp)->v_inode.i_ino; }
509
1da177e4 510extern int vn_revalidate(struct vnode *);
220b5284 511extern int __vn_revalidate(struct vnode *, vattr_t *);
1da177e4 512extern void vn_revalidate_core(struct vnode *, vattr_t *);
1da177e4 513
51c91ed5
CH		 514extern void vn_iowait(struct vnode *vp);
515extern void vn_iowake(struct vnode *vp);
516
1da177e4
LT		 517static inline int vn_count(struct vnode *vp)
518{
ec86dc02 519 return atomic_read(&vn_to_inode(vp)->i_count);
1da177e4
LT		 520}
521
522/*
523 * Vnode reference counting functions (and macros for compatibility).
524 */
525extern vnode_t *vn_hold(struct vnode *);
1da177e4
LT		 526
527#if defined(XFS_VNODE_TRACE)
528#define VN_HOLD(vp) \
529 ((void)vn_hold(vp), \
530 vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
531#define VN_RELE(vp) \
532 (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
ec86dc02 533 iput(vn_to_inode(vp)))
1da177e4
LT		 534#else
535#define VN_HOLD(vp) ((void)vn_hold(vp))
ec86dc02 536#define VN_RELE(vp) (iput(vn_to_inode(vp)))
1da177e4
LT		 537#endif
538
cdb62687
CH		 539static inline struct vnode *vn_grab(struct vnode *vp)
540{
ec86dc02
NS		 541 struct inode *inode = igrab(vn_to_inode(vp));
542 return inode ? vn_from_inode(inode) : NULL;
cdb62687
CH		 543}
544
1da177e4
LT		 545/*
546 * Vname handling macros.
547 */
548#define VNAME(dentry) ((char *) (dentry)->d_name.name)
549#define VNAMELEN(dentry) ((dentry)->d_name.len)
ec86dc02 550#define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode))
1da177e4
LT		 551
552/*
553 * Vnode spinlock manipulation.
554 */
555#define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock)
556#define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s)
557#define VN_FLAGSET(vp,b) vn_flagset(vp,b)
558#define VN_FLAGCLR(vp,b) vn_flagclr(vp,b)
559
560static __inline__ void vn_flagset(struct vnode *vp, uint flag)
561{
562 spin_lock(&vp->v_lock);
563 vp->v_flag |= flag;
564 spin_unlock(&vp->v_lock);
565}
566
567static __inline__ void vn_flagclr(struct vnode *vp, uint flag)
568{
569 spin_lock(&vp->v_lock);
570 vp->v_flag &= ~flag;
571 spin_unlock(&vp->v_lock);
572}
573
1da177e4
LT		 574/*
575 * Dealing with bad inodes
576 */
577static inline void vn_mark_bad(struct vnode *vp)
578{
ec86dc02 579 make_bad_inode(vn_to_inode(vp));
1da177e4
LT		 580}
581
582static inline int VN_BAD(struct vnode *vp)
583{
ec86dc02 584 return is_bad_inode(vn_to_inode(vp));
1da177e4
LT		 585}
586
ca5ccbf9
NS		 587/*
588 * Extracting atime values in various formats
589 */
590static inline void vn_atime_to_bstime(struct vnode *vp, xfs_bstime_t *bs_atime)
591{
592 bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec;
593 bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec;
594}
595
596static inline void vn_atime_to_timespec(struct vnode *vp, struct timespec *ts)
597{
598 *ts = vp->v_inode.i_atime;
599}
600
601static inline void vn_atime_to_time_t(struct vnode *vp, time_t *tt)
602{
603 *tt = vp->v_inode.i_atime.tv_sec;
604}
605
1da177e4
LT		 606/*
607 * Some useful predicates.
608 */
ec86dc02
NS		 609#define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping)
610#define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages)
611#define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \
1da177e4
LT		 612 PAGECACHE_TAG_DIRTY)
613#define VMODIFY(vp) VN_FLAGSET(vp, VMODIFIED)
614#define VUNMODIFY(vp) VN_FLAGCLR(vp, VMODIFIED)
615
616/*
617 * Flags to VOP_SETATTR/VOP_GETATTR.
618 */
619#define ATTR_UTIME 0x01 /* non-default utime(2) request */
620#define ATTR_DMI 0x08 /* invocation from a DMI function */
621#define ATTR_LAZY 0x80 /* set/get attributes lazily */
622#define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
5fcbab35 623#define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
1f730e3b 624#define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */
1da177e4
LT		 625
626/*
627 * Flags to VOP_FSYNC and VOP_RECLAIM.
628 */
629#define FSYNC_NOWAIT 0 /* asynchronous flush */
630#define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
631#define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
632#define FSYNC_DATA 0x4 /* synchronous fsync of data only */
633
634/*
635 * Tracking vnode activity.
636 */
637#if defined(XFS_VNODE_TRACE)
638
639#define VNODE_TRACE_SIZE 16 /* number of trace entries */
640#define VNODE_KTRACE_ENTRY 1
641#define VNODE_KTRACE_EXIT 2
642#define VNODE_KTRACE_HOLD 3
643#define VNODE_KTRACE_REF 4
644#define VNODE_KTRACE_RELE 5
645
764433b7
ES		 646extern void vn_trace_entry(struct vnode *, const char *, inst_t *);
647extern void vn_trace_exit(struct vnode *, const char *, inst_t *);
1da177e4
LT		 648extern void vn_trace_hold(struct vnode *, char *, int, inst_t *);
649extern void vn_trace_ref(struct vnode *, char *, int, inst_t *);
650extern void vn_trace_rele(struct vnode *, char *, int, inst_t *);
651
652#define VN_TRACE(vp) \
653 vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
654#else
655#define vn_trace_entry(a,b,c)
656#define vn_trace_exit(a,b,c)
657#define vn_trace_hold(a,b,c,d)
658#define vn_trace_ref(a,b,c,d)
659#define vn_trace_rele(a,b,c,d)
660#define VN_TRACE(vp)
661#endif
662
663#endif /* __XFS_VNODE_H__ */
Linux kernel - Deliverables
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