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1 | /* |
2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
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. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
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. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | * | |
32 | * Portions Copyright (c) 1989, 1993 | |
33 | * The Regents of the University of California. All rights reserved. | |
34 | * | |
35 | * Redistribution and use in source and binary forms, with or without | |
36 | * modification, are permitted provided that the following conditions | |
37 | * are met: | |
38 | * 1. Redistributions of source code must retain the above copyright | |
39 | * notice, this list of conditions and the following disclaimer. | |
40 | * 2. Redistributions in binary form must reproduce the above copyright | |
41 | * notice, this list of conditions and the following disclaimer in the | |
42 | * documentation and/or other materials provided with the distribution. | |
43 | * 3. Neither the name of the University nor the names of its contributors | |
44 | * may be used to endorse or promote products derived from this software | |
45 | * without specific prior written permission. | |
46 | * | |
47 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
48 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
49 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
50 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
51 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
52 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
53 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
54 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
55 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
56 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
57 | * SUCH DAMAGE. | |
58 | */ | |
59 | #ifndef __XFS_VNODE_H__ | |
60 | #define __XFS_VNODE_H__ | |
61 | ||
62 | struct uio; | |
63 | struct file; | |
64 | struct vattr; | |
65 | struct xfs_iomap; | |
66 | struct attrlist_cursor_kern; | |
67 | ||
68 | /* | |
69 | * Vnode types. VNON means no type. | |
70 | */ | |
71 | enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VFIFO, VBAD, VSOCK }; | |
72 | ||
73 | typedef xfs_ino_t vnumber_t; | |
74 | typedef struct dentry vname_t; | |
75 | typedef bhv_head_t vn_bhv_head_t; | |
76 | ||
77 | /* | |
78 | * MP locking protocols: | |
79 | * v_flag, v_vfsp VN_LOCK/VN_UNLOCK | |
80 | * v_type read-only or fs-dependent | |
81 | */ | |
82 | typedef struct vnode { | |
83 | __u32 v_flag; /* vnode flags (see below) */ | |
84 | enum vtype v_type; /* vnode type */ | |
85 | struct vfs *v_vfsp; /* ptr to containing VFS */ | |
86 | vnumber_t v_number; /* in-core vnode number */ | |
87 | vn_bhv_head_t v_bh; /* behavior head */ | |
88 | spinlock_t v_lock; /* VN_LOCK/VN_UNLOCK */ | |
89 | struct inode v_inode; /* Linux inode */ | |
90 | #ifdef XFS_VNODE_TRACE | |
91 | struct ktrace *v_trace; /* trace header structure */ | |
92 | #endif | |
93 | } vnode_t; | |
94 | ||
95 | #define v_fbhv v_bh.bh_first /* first behavior */ | |
96 | #define v_fops v_bh.bh_first->bd_ops /* first behavior ops */ | |
97 | ||
98 | #define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */ | |
99 | #define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */ | |
100 | #define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */ | |
101 | ||
102 | typedef enum { | |
103 | VN_BHV_UNKNOWN, /* not specified */ | |
104 | VN_BHV_XFS, /* xfs */ | |
105 | VN_BHV_DM, /* data migration */ | |
106 | VN_BHV_QM, /* quota manager */ | |
107 | VN_BHV_IO, /* IO path */ | |
108 | VN_BHV_END /* housekeeping end-of-range */ | |
109 | } vn_bhv_t; | |
110 | ||
111 | #define VNODE_POSITION_XFS (VNODE_POSITION_BASE) | |
112 | #define VNODE_POSITION_DM (VNODE_POSITION_BASE+10) | |
113 | #define VNODE_POSITION_QM (VNODE_POSITION_BASE+20) | |
114 | #define VNODE_POSITION_IO (VNODE_POSITION_BASE+30) | |
115 | ||
116 | /* | |
117 | * Macros for dealing with the behavior descriptor inside of the vnode. | |
118 | */ | |
119 | #define BHV_TO_VNODE(bdp) ((vnode_t *)BHV_VOBJ(bdp)) | |
120 | #define BHV_TO_VNODE_NULL(bdp) ((vnode_t *)BHV_VOBJNULL(bdp)) | |
121 | ||
122 | #define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh))) | |
123 | #define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name) | |
124 | #define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp) | |
125 | #define vn_bhv_lookup(bhp,ops) bhv_lookup(bhp,ops) | |
126 | #define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops) | |
127 | ||
128 | /* | |
129 | * Vnode to Linux inode mapping. | |
130 | */ | |
131 | #define LINVFS_GET_VP(inode) ((vnode_t *)list_entry(inode, vnode_t, v_inode)) | |
132 | #define LINVFS_GET_IP(vp) (&(vp)->v_inode) | |
133 | ||
134 | /* | |
135 | * Convert between vnode types and inode formats (since POSIX.1 | |
136 | * defines mode word of stat structure in terms of inode formats). | |
137 | */ | |
138 | extern enum vtype iftovt_tab[]; | |
139 | extern u_short vttoif_tab[]; | |
140 | #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) | |
141 | #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) | |
142 | #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) | |
143 | ||
144 | ||
145 | /* | |
146 | * Vnode flags. | |
147 | */ | |
148 | #define VINACT 0x1 /* vnode is being inactivated */ | |
149 | #define VRECLM 0x2 /* vnode is being reclaimed */ | |
150 | #define VWAIT 0x4 /* waiting for VINACT/VRECLM to end */ | |
151 | #define VMODIFIED 0x8 /* XFS inode state possibly differs */ | |
152 | /* to the Linux inode state. */ | |
153 | ||
154 | /* | |
155 | * Values for the VOP_RWLOCK and VOP_RWUNLOCK flags parameter. | |
156 | */ | |
157 | typedef enum vrwlock { | |
158 | VRWLOCK_NONE, | |
159 | VRWLOCK_READ, | |
160 | VRWLOCK_WRITE, | |
161 | VRWLOCK_WRITE_DIRECT, | |
162 | VRWLOCK_TRY_READ, | |
163 | VRWLOCK_TRY_WRITE | |
164 | } vrwlock_t; | |
165 | ||
166 | /* | |
167 | * Return values for VOP_INACTIVE. A return value of | |
168 | * VN_INACTIVE_NOCACHE implies that the file system behavior | |
169 | * has disassociated its state and bhv_desc_t from the vnode. | |
170 | */ | |
171 | #define VN_INACTIVE_CACHE 0 | |
172 | #define VN_INACTIVE_NOCACHE 1 | |
173 | ||
174 | /* | |
175 | * Values for the cmd code given to VOP_VNODE_CHANGE. | |
176 | */ | |
177 | typedef enum vchange { | |
178 | VCHANGE_FLAGS_FRLOCKS = 0, | |
179 | VCHANGE_FLAGS_ENF_LOCKING = 1, | |
180 | VCHANGE_FLAGS_TRUNCATED = 2, | |
181 | VCHANGE_FLAGS_PAGE_DIRTY = 3, | |
182 | VCHANGE_FLAGS_IOEXCL_COUNT = 4 | |
183 | } vchange_t; | |
184 | ||
185 | ||
186 | typedef int (*vop_open_t)(bhv_desc_t *, struct cred *); | |
187 | typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *, | |
188 | const struct iovec *, unsigned int, | |
189 | loff_t *, int, struct cred *); | |
190 | typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *, | |
191 | const struct iovec *, unsigned int, | |
192 | loff_t *, int, struct cred *); | |
193 | typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *, | |
194 | loff_t *, int, size_t, read_actor_t, | |
195 | void *, struct cred *); | |
196 | typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *, | |
197 | int, unsigned int, void __user *); | |
198 | typedef int (*vop_getattr_t)(bhv_desc_t *, struct vattr *, int, | |
199 | struct cred *); | |
200 | typedef int (*vop_setattr_t)(bhv_desc_t *, struct vattr *, int, | |
201 | struct cred *); | |
202 | typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *); | |
203 | typedef int (*vop_lookup_t)(bhv_desc_t *, vname_t *, vnode_t **, | |
204 | int, vnode_t *, struct cred *); | |
205 | typedef int (*vop_create_t)(bhv_desc_t *, vname_t *, struct vattr *, | |
206 | vnode_t **, struct cred *); | |
207 | typedef int (*vop_remove_t)(bhv_desc_t *, vname_t *, struct cred *); | |
208 | typedef int (*vop_link_t)(bhv_desc_t *, vnode_t *, vname_t *, | |
209 | struct cred *); | |
210 | typedef int (*vop_rename_t)(bhv_desc_t *, vname_t *, vnode_t *, vname_t *, | |
211 | struct cred *); | |
212 | typedef int (*vop_mkdir_t)(bhv_desc_t *, vname_t *, struct vattr *, | |
213 | vnode_t **, struct cred *); | |
214 | typedef int (*vop_rmdir_t)(bhv_desc_t *, vname_t *, struct cred *); | |
215 | typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *, | |
216 | int *); | |
217 | typedef int (*vop_symlink_t)(bhv_desc_t *, vname_t *, struct vattr *, | |
218 | char *, vnode_t **, struct cred *); | |
219 | typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int, | |
220 | struct cred *); | |
221 | typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *, | |
222 | xfs_off_t, xfs_off_t); | |
223 | typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *); | |
224 | typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *); | |
225 | typedef int (*vop_release_t)(bhv_desc_t *); | |
226 | typedef int (*vop_rwlock_t)(bhv_desc_t *, vrwlock_t); | |
227 | typedef void (*vop_rwunlock_t)(bhv_desc_t *, vrwlock_t); | |
228 | typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int, | |
229 | struct xfs_iomap *, int *); | |
230 | typedef int (*vop_reclaim_t)(bhv_desc_t *); | |
231 | typedef int (*vop_attr_get_t)(bhv_desc_t *, char *, char *, int *, int, | |
232 | struct cred *); | |
233 | typedef int (*vop_attr_set_t)(bhv_desc_t *, char *, char *, int, int, | |
234 | struct cred *); | |
235 | typedef int (*vop_attr_remove_t)(bhv_desc_t *, char *, int, struct cred *); | |
236 | typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int, | |
237 | struct attrlist_cursor_kern *, struct cred *); | |
238 | typedef void (*vop_link_removed_t)(bhv_desc_t *, vnode_t *, int); | |
239 | typedef void (*vop_vnode_change_t)(bhv_desc_t *, vchange_t, __psint_t); | |
240 | typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int); | |
241 | typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int); | |
242 | typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, | |
243 | uint64_t, int); | |
244 | typedef int (*vop_iflush_t)(bhv_desc_t *, int); | |
245 | ||
246 | ||
247 | typedef struct vnodeops { | |
248 | bhv_position_t vn_position; /* position within behavior chain */ | |
249 | vop_open_t vop_open; | |
250 | vop_read_t vop_read; | |
251 | vop_write_t vop_write; | |
252 | vop_sendfile_t vop_sendfile; | |
253 | vop_ioctl_t vop_ioctl; | |
254 | vop_getattr_t vop_getattr; | |
255 | vop_setattr_t vop_setattr; | |
256 | vop_access_t vop_access; | |
257 | vop_lookup_t vop_lookup; | |
258 | vop_create_t vop_create; | |
259 | vop_remove_t vop_remove; | |
260 | vop_link_t vop_link; | |
261 | vop_rename_t vop_rename; | |
262 | vop_mkdir_t vop_mkdir; | |
263 | vop_rmdir_t vop_rmdir; | |
264 | vop_readdir_t vop_readdir; | |
265 | vop_symlink_t vop_symlink; | |
266 | vop_readlink_t vop_readlink; | |
267 | vop_fsync_t vop_fsync; | |
268 | vop_inactive_t vop_inactive; | |
269 | vop_fid2_t vop_fid2; | |
270 | vop_rwlock_t vop_rwlock; | |
271 | vop_rwunlock_t vop_rwunlock; | |
272 | vop_bmap_t vop_bmap; | |
273 | vop_reclaim_t vop_reclaim; | |
274 | vop_attr_get_t vop_attr_get; | |
275 | vop_attr_set_t vop_attr_set; | |
276 | vop_attr_remove_t vop_attr_remove; | |
277 | vop_attr_list_t vop_attr_list; | |
278 | vop_link_removed_t vop_link_removed; | |
279 | vop_vnode_change_t vop_vnode_change; | |
280 | vop_ptossvp_t vop_tosspages; | |
281 | vop_pflushinvalvp_t vop_flushinval_pages; | |
282 | vop_pflushvp_t vop_flush_pages; | |
283 | vop_release_t vop_release; | |
284 | vop_iflush_t vop_iflush; | |
285 | } vnodeops_t; | |
286 | ||
287 | /* | |
288 | * VOP's. | |
289 | */ | |
290 | #define _VOP_(op, vp) (*((vnodeops_t *)(vp)->v_fops)->op) | |
291 | ||
292 | #define VOP_READ(vp,file,iov,segs,offset,ioflags,cr,rv) \ | |
293 | rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr) | |
294 | #define VOP_WRITE(vp,file,iov,segs,offset,ioflags,cr,rv) \ | |
295 | rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr) | |
296 | #define VOP_SENDFILE(vp,f,off,ioflags,cnt,act,targ,cr,rv) \ | |
297 | rv = _VOP_(vop_sendfile, vp)((vp)->v_fbhv,f,off,ioflags,cnt,act,targ,cr) | |
298 | #define VOP_BMAP(vp,of,sz,rw,b,n,rv) \ | |
299 | rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n) | |
300 | #define VOP_OPEN(vp, cr, rv) \ | |
301 | rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr) | |
302 | #define VOP_GETATTR(vp, vap, f, cr, rv) \ | |
303 | rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr) | |
304 | #define VOP_SETATTR(vp, vap, f, cr, rv) \ | |
305 | rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr) | |
306 | #define VOP_ACCESS(vp, mode, cr, rv) \ | |
307 | rv = _VOP_(vop_access, vp)((vp)->v_fbhv, mode, cr) | |
308 | #define VOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv) \ | |
309 | rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr) | |
310 | #define VOP_CREATE(dvp,d,vap,vpp,cr,rv) \ | |
311 | rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr) | |
312 | #define VOP_REMOVE(dvp,d,cr,rv) \ | |
313 | rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr) | |
314 | #define VOP_LINK(tdvp,fvp,d,cr,rv) \ | |
315 | rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr) | |
316 | #define VOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv) \ | |
317 | rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr) | |
318 | #define VOP_MKDIR(dp,d,vap,vpp,cr,rv) \ | |
319 | rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr) | |
320 | #define VOP_RMDIR(dp,d,cr,rv) \ | |
321 | rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr) | |
322 | #define VOP_READDIR(vp,uiop,cr,eofp,rv) \ | |
323 | rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp) | |
324 | #define VOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv) \ | |
325 | rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr) | |
326 | #define VOP_READLINK(vp,uiop,fl,cr,rv) \ | |
327 | rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,fl,cr) | |
328 | #define VOP_FSYNC(vp,f,cr,b,e,rv) \ | |
329 | rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e) | |
330 | #define VOP_INACTIVE(vp, cr, rv) \ | |
331 | rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr) | |
332 | #define VOP_RELEASE(vp, rv) \ | |
333 | rv = _VOP_(vop_release, vp)((vp)->v_fbhv) | |
334 | #define VOP_FID2(vp, fidp, rv) \ | |
335 | rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp) | |
336 | #define VOP_RWLOCK(vp,i) \ | |
337 | (void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i) | |
338 | #define VOP_RWLOCK_TRY(vp,i) \ | |
339 | _VOP_(vop_rwlock, vp)((vp)->v_fbhv, i) | |
340 | #define VOP_RWUNLOCK(vp,i) \ | |
341 | (void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i) | |
342 | #define VOP_FRLOCK(vp,c,fl,flags,offset,fr,rv) \ | |
343 | rv = _VOP_(vop_frlock, vp)((vp)->v_fbhv,c,fl,flags,offset,fr) | |
344 | #define VOP_RECLAIM(vp, rv) \ | |
345 | rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv) | |
346 | #define VOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv) \ | |
347 | rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred) | |
348 | #define VOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv) \ | |
349 | rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred) | |
350 | #define VOP_ATTR_REMOVE(vp, name, flags, cred, rv) \ | |
351 | rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred) | |
352 | #define VOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv) \ | |
353 | rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred) | |
354 | #define VOP_LINK_REMOVED(vp, dvp, linkzero) \ | |
355 | (void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero) | |
356 | #define VOP_VNODE_CHANGE(vp, cmd, val) \ | |
357 | (void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val) | |
358 | /* | |
359 | * These are page cache functions that now go thru VOPs. | |
360 | * 'last' parameter is unused and left in for IRIX compatibility | |
361 | */ | |
362 | #define VOP_TOSS_PAGES(vp, first, last, fiopt) \ | |
363 | _VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt) | |
364 | /* | |
365 | * 'last' parameter is unused and left in for IRIX compatibility | |
366 | */ | |
367 | #define VOP_FLUSHINVAL_PAGES(vp, first, last, fiopt) \ | |
368 | _VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt) | |
369 | /* | |
370 | * 'last' parameter is unused and left in for IRIX compatibility | |
371 | */ | |
372 | #define VOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv) \ | |
373 | rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt) | |
374 | #define VOP_IOCTL(vp, inode, filp, fl, cmd, arg, rv) \ | |
375 | rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,fl,cmd,arg) | |
376 | #define VOP_IFLUSH(vp, flags, rv) \ | |
377 | rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags) | |
378 | ||
379 | /* | |
380 | * Flags for read/write calls - same values as IRIX | |
381 | */ | |
382 | #define IO_ISAIO 0x00001 /* don't wait for completion */ | |
383 | #define IO_ISDIRECT 0x00004 /* bypass page cache */ | |
384 | #define IO_INVIS 0x00020 /* don't update inode timestamps */ | |
385 | ||
386 | /* | |
387 | * Flags for VOP_IFLUSH call | |
388 | */ | |
389 | #define FLUSH_SYNC 1 /* wait for flush to complete */ | |
390 | #define FLUSH_INODE 2 /* flush the inode itself */ | |
391 | #define FLUSH_LOG 4 /* force the last log entry for | |
392 | * this inode out to disk */ | |
393 | ||
394 | /* | |
395 | * Flush/Invalidate options for VOP_TOSS_PAGES, VOP_FLUSHINVAL_PAGES and | |
396 | * VOP_FLUSH_PAGES. | |
397 | */ | |
398 | #define FI_NONE 0 /* none */ | |
399 | #define FI_REMAPF 1 /* Do a remapf prior to the operation */ | |
400 | #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. | |
401 | Prevent VM access to the pages until | |
402 | the operation completes. */ | |
403 | ||
404 | /* | |
405 | * Vnode attributes. va_mask indicates those attributes the caller | |
406 | * wants to set or extract. | |
407 | */ | |
408 | typedef struct vattr { | |
409 | int va_mask; /* bit-mask of attributes present */ | |
410 | enum vtype va_type; /* vnode type (for create) */ | |
411 | mode_t va_mode; /* file access mode and type */ | |
412 | nlink_t va_nlink; /* number of references to file */ | |
413 | uid_t va_uid; /* owner user id */ | |
414 | gid_t va_gid; /* owner group id */ | |
415 | xfs_ino_t va_nodeid; /* file id */ | |
416 | xfs_off_t va_size; /* file size in bytes */ | |
417 | u_long va_blocksize; /* blocksize preferred for i/o */ | |
418 | struct timespec va_atime; /* time of last access */ | |
419 | struct timespec va_mtime; /* time of last modification */ | |
420 | struct timespec va_ctime; /* time file changed */ | |
421 | u_int va_gen; /* generation number of file */ | |
422 | xfs_dev_t va_rdev; /* device the special file represents */ | |
423 | __int64_t va_nblocks; /* number of blocks allocated */ | |
424 | u_long va_xflags; /* random extended file flags */ | |
425 | u_long va_extsize; /* file extent size */ | |
426 | u_long va_nextents; /* number of extents in file */ | |
427 | u_long va_anextents; /* number of attr extents in file */ | |
428 | int va_projid; /* project id */ | |
429 | } vattr_t; | |
430 | ||
431 | /* | |
432 | * setattr or getattr attributes | |
433 | */ | |
434 | #define XFS_AT_TYPE 0x00000001 | |
435 | #define XFS_AT_MODE 0x00000002 | |
436 | #define XFS_AT_UID 0x00000004 | |
437 | #define XFS_AT_GID 0x00000008 | |
438 | #define XFS_AT_FSID 0x00000010 | |
439 | #define XFS_AT_NODEID 0x00000020 | |
440 | #define XFS_AT_NLINK 0x00000040 | |
441 | #define XFS_AT_SIZE 0x00000080 | |
442 | #define XFS_AT_ATIME 0x00000100 | |
443 | #define XFS_AT_MTIME 0x00000200 | |
444 | #define XFS_AT_CTIME 0x00000400 | |
445 | #define XFS_AT_RDEV 0x00000800 | |
446 | #define XFS_AT_BLKSIZE 0x00001000 | |
447 | #define XFS_AT_NBLOCKS 0x00002000 | |
448 | #define XFS_AT_VCODE 0x00004000 | |
449 | #define XFS_AT_MAC 0x00008000 | |
450 | #define XFS_AT_UPDATIME 0x00010000 | |
451 | #define XFS_AT_UPDMTIME 0x00020000 | |
452 | #define XFS_AT_UPDCTIME 0x00040000 | |
453 | #define XFS_AT_ACL 0x00080000 | |
454 | #define XFS_AT_CAP 0x00100000 | |
455 | #define XFS_AT_INF 0x00200000 | |
456 | #define XFS_AT_XFLAGS 0x00400000 | |
457 | #define XFS_AT_EXTSIZE 0x00800000 | |
458 | #define XFS_AT_NEXTENTS 0x01000000 | |
459 | #define XFS_AT_ANEXTENTS 0x02000000 | |
460 | #define XFS_AT_PROJID 0x04000000 | |
461 | #define XFS_AT_SIZE_NOPERM 0x08000000 | |
462 | #define XFS_AT_GENCOUNT 0x10000000 | |
463 | ||
464 | #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\ | |
465 | XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\ | |
466 | XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\ | |
467 | XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\ | |
468 | XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\ | |
469 | XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT) | |
470 | ||
471 | #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\ | |
472 | XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\ | |
473 | XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\ | |
474 | XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID) | |
475 | ||
476 | #define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME) | |
477 | ||
478 | #define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME) | |
479 | ||
480 | #define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\ | |
481 | XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\ | |
482 | XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT) | |
483 | ||
484 | /* | |
485 | * Modes. | |
486 | */ | |
487 | #define VSUID S_ISUID /* set user id on execution */ | |
488 | #define VSGID S_ISGID /* set group id on execution */ | |
489 | #define VSVTX S_ISVTX /* save swapped text even after use */ | |
490 | #define VREAD S_IRUSR /* read, write, execute permissions */ | |
491 | #define VWRITE S_IWUSR | |
492 | #define VEXEC S_IXUSR | |
493 | ||
494 | #define MODEMASK S_IALLUGO /* mode bits plus permission bits */ | |
495 | ||
496 | /* | |
497 | * Check whether mandatory file locking is enabled. | |
498 | */ | |
499 | #define MANDLOCK(vp, mode) \ | |
500 | ((vp)->v_type == VREG && ((mode) & (VSGID|(VEXEC>>3))) == VSGID) | |
501 | ||
502 | extern void vn_init(void); | |
503 | extern int vn_wait(struct vnode *); | |
504 | extern vnode_t *vn_initialize(struct inode *); | |
505 | ||
506 | /* | |
507 | * Acquiring and invalidating vnodes: | |
508 | * | |
509 | * if (vn_get(vp, version, 0)) | |
510 | * ...; | |
511 | * vn_purge(vp, version); | |
512 | * | |
513 | * vn_get and vn_purge must be called with vmap_t arguments, sampled | |
514 | * while a lock that the vnode's VOP_RECLAIM function acquires is | |
515 | * held, to ensure that the vnode sampled with the lock held isn't | |
516 | * recycled (VOP_RECLAIMed) or deallocated between the release of the lock | |
517 | * and the subsequent vn_get or vn_purge. | |
518 | */ | |
519 | ||
520 | /* | |
521 | * vnode_map structures _must_ match vn_epoch and vnode structure sizes. | |
522 | */ | |
523 | typedef struct vnode_map { | |
524 | vfs_t *v_vfsp; | |
525 | vnumber_t v_number; /* in-core vnode number */ | |
526 | xfs_ino_t v_ino; /* inode # */ | |
527 | } vmap_t; | |
528 | ||
529 | #define VMAP(vp, vmap) {(vmap).v_vfsp = (vp)->v_vfsp, \ | |
530 | (vmap).v_number = (vp)->v_number, \ | |
531 | (vmap).v_ino = (vp)->v_inode.i_ino; } | |
532 | ||
533 | extern void vn_purge(struct vnode *, vmap_t *); | |
534 | extern vnode_t *vn_get(struct vnode *, vmap_t *); | |
535 | extern int vn_revalidate(struct vnode *); | |
536 | extern void vn_revalidate_core(struct vnode *, vattr_t *); | |
537 | extern void vn_remove(struct vnode *); | |
538 | ||
539 | static inline int vn_count(struct vnode *vp) | |
540 | { | |
541 | return atomic_read(&LINVFS_GET_IP(vp)->i_count); | |
542 | } | |
543 | ||
544 | /* | |
545 | * Vnode reference counting functions (and macros for compatibility). | |
546 | */ | |
547 | extern vnode_t *vn_hold(struct vnode *); | |
548 | extern void vn_rele(struct vnode *); | |
549 | ||
550 | #if defined(XFS_VNODE_TRACE) | |
551 | #define VN_HOLD(vp) \ | |
552 | ((void)vn_hold(vp), \ | |
553 | vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address)) | |
554 | #define VN_RELE(vp) \ | |
555 | (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \ | |
556 | iput(LINVFS_GET_IP(vp))) | |
557 | #else | |
558 | #define VN_HOLD(vp) ((void)vn_hold(vp)) | |
559 | #define VN_RELE(vp) (iput(LINVFS_GET_IP(vp))) | |
560 | #endif | |
561 | ||
562 | /* | |
563 | * Vname handling macros. | |
564 | */ | |
565 | #define VNAME(dentry) ((char *) (dentry)->d_name.name) | |
566 | #define VNAMELEN(dentry) ((dentry)->d_name.len) | |
567 | #define VNAME_TO_VNODE(dentry) (LINVFS_GET_VP((dentry)->d_inode)) | |
568 | ||
569 | /* | |
570 | * Vnode spinlock manipulation. | |
571 | */ | |
572 | #define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock) | |
573 | #define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s) | |
574 | #define VN_FLAGSET(vp,b) vn_flagset(vp,b) | |
575 | #define VN_FLAGCLR(vp,b) vn_flagclr(vp,b) | |
576 | ||
577 | static __inline__ void vn_flagset(struct vnode *vp, uint flag) | |
578 | { | |
579 | spin_lock(&vp->v_lock); | |
580 | vp->v_flag |= flag; | |
581 | spin_unlock(&vp->v_lock); | |
582 | } | |
583 | ||
584 | static __inline__ void vn_flagclr(struct vnode *vp, uint flag) | |
585 | { | |
586 | spin_lock(&vp->v_lock); | |
587 | vp->v_flag &= ~flag; | |
588 | spin_unlock(&vp->v_lock); | |
589 | } | |
590 | ||
591 | /* | |
592 | * Update modify/access/change times on the vnode | |
593 | */ | |
594 | #define VN_MTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_mtime = *(tvp)) | |
595 | #define VN_ATIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_atime = *(tvp)) | |
596 | #define VN_CTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_ctime = *(tvp)) | |
597 | ||
598 | /* | |
599 | * Dealing with bad inodes | |
600 | */ | |
601 | static inline void vn_mark_bad(struct vnode *vp) | |
602 | { | |
603 | make_bad_inode(LINVFS_GET_IP(vp)); | |
604 | } | |
605 | ||
606 | static inline int VN_BAD(struct vnode *vp) | |
607 | { | |
608 | return is_bad_inode(LINVFS_GET_IP(vp)); | |
609 | } | |
610 | ||
611 | /* | |
612 | * Some useful predicates. | |
613 | */ | |
614 | #define VN_MAPPED(vp) mapping_mapped(LINVFS_GET_IP(vp)->i_mapping) | |
615 | #define VN_CACHED(vp) (LINVFS_GET_IP(vp)->i_mapping->nrpages) | |
616 | #define VN_DIRTY(vp) mapping_tagged(LINVFS_GET_IP(vp)->i_mapping, \ | |
617 | PAGECACHE_TAG_DIRTY) | |
618 | #define VMODIFY(vp) VN_FLAGSET(vp, VMODIFIED) | |
619 | #define VUNMODIFY(vp) VN_FLAGCLR(vp, VMODIFIED) | |
620 | ||
621 | /* | |
622 | * Flags to VOP_SETATTR/VOP_GETATTR. | |
623 | */ | |
624 | #define ATTR_UTIME 0x01 /* non-default utime(2) request */ | |
625 | #define ATTR_DMI 0x08 /* invocation from a DMI function */ | |
626 | #define ATTR_LAZY 0x80 /* set/get attributes lazily */ | |
627 | #define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */ | |
628 | ||
629 | /* | |
630 | * Flags to VOP_FSYNC and VOP_RECLAIM. | |
631 | */ | |
632 | #define FSYNC_NOWAIT 0 /* asynchronous flush */ | |
633 | #define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */ | |
634 | #define FSYNC_INVAL 0x2 /* flush and invalidate cached data */ | |
635 | #define FSYNC_DATA 0x4 /* synchronous fsync of data only */ | |
636 | ||
637 | /* | |
638 | * Tracking vnode activity. | |
639 | */ | |
640 | #if defined(XFS_VNODE_TRACE) | |
641 | ||
642 | #define VNODE_TRACE_SIZE 16 /* number of trace entries */ | |
643 | #define VNODE_KTRACE_ENTRY 1 | |
644 | #define VNODE_KTRACE_EXIT 2 | |
645 | #define VNODE_KTRACE_HOLD 3 | |
646 | #define VNODE_KTRACE_REF 4 | |
647 | #define VNODE_KTRACE_RELE 5 | |
648 | ||
649 | extern void vn_trace_entry(struct vnode *, char *, inst_t *); | |
650 | extern void vn_trace_exit(struct vnode *, char *, inst_t *); | |
651 | extern void vn_trace_hold(struct vnode *, char *, int, inst_t *); | |
652 | extern void vn_trace_ref(struct vnode *, char *, int, inst_t *); | |
653 | extern void vn_trace_rele(struct vnode *, char *, int, inst_t *); | |
654 | ||
655 | #define VN_TRACE(vp) \ | |
656 | vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address) | |
657 | #else | |
658 | #define vn_trace_entry(a,b,c) | |
659 | #define vn_trace_exit(a,b,c) | |
660 | #define vn_trace_hold(a,b,c,d) | |
661 | #define vn_trace_ref(a,b,c,d) | |
662 | #define vn_trace_rele(a,b,c,d) | |
663 | #define VN_TRACE(vp) | |
664 | #endif | |
665 | ||
666 | #endif /* __XFS_VNODE_H__ */ |