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[dragonfly.git] / sys / sys / vnode.h
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1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)vnode.h 8.7 (Berkeley) 2/4/94
34 * $FreeBSD: src/sys/sys/vnode.h,v 1.111.2.19 2002/12/29 18:19:53 dillon Exp $
35 */
36
37#ifndef _SYS_VNODE_H_
38#define _SYS_VNODE_H_
39
40#include <sys/queue.h>
41#include <sys/lock.h>
42#include <sys/select.h>
43#include <sys/uio.h>
44#include <sys/acl.h>
45
46#include <machine/lock.h>
47
48/*
49 * The vnode is the focus of all file activity in UNIX. There is a
50 * unique vnode allocated for each active file, each current directory,
51 * each mounted-on file, text file, and the root.
52 */
53
54/*
55 * Vnode types. VNON means no type.
56 */
57enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
58
59/*
60 * Vnode tag types.
61 * These are for the benefit of external programs only (e.g., pstat)
62 * and should NEVER be inspected by the kernel.
63 */
64enum vtagtype {
65 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
66 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
67 VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS,
68 VT_HPFS, VT_NWFS, VT_SMBFS
69};
70
71/*
72 * Each underlying filesystem allocates its own private area and hangs
73 * it from v_data. If non-null, this area is freed in getnewvnode().
74 */
75TAILQ_HEAD(buflists, buf);
76
77typedef int vop_t __P((void *));
78struct namecache;
79
80/*
81 * Reading or writing any of these items requires holding the appropriate lock.
82 * v_freelist is locked by the global vnode_free_list simple lock.
83 * v_mntvnodes is locked by the global mntvnodes simple lock.
84 * v_flag, v_usecount, v_holdcount and v_writecount are
85 * locked by the v_interlock simple lock.
86 * v_pollinfo is locked by the lock contained inside it.
87 */
88struct vnode {
89 u_long v_flag; /* vnode flags (see below) */
90 int v_usecount; /* reference count of users */
91 int v_writecount; /* reference count of writers */
92 int v_holdcnt; /* page & buffer references */
93 u_long v_id; /* capability identifier */
94 struct mount *v_mount; /* ptr to vfs we are in */
95 vop_t **v_op; /* vnode operations vector */
96 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
97 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
98 struct buflists v_cleanblkhd; /* clean blocklist head */
99 struct buflists v_dirtyblkhd; /* dirty blocklist head */
100 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
101 long v_numoutput; /* num of writes in progress */
102 enum vtype v_type; /* vnode type */
103 union {
104 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
105 struct socket *vu_socket; /* unix ipc (VSOCK) */
106 struct {
107 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
108 SLIST_ENTRY(vnode) vu_specnext;
109 } vu_spec;
110 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
111 } v_un;
112 struct nqlease *v_lease; /* Soft reference to lease */
113 daddr_t v_lastw; /* last write (write cluster) */
114 daddr_t v_cstart; /* start block of cluster */
115 daddr_t v_lasta; /* last allocation */
116 int v_clen; /* length of current cluster */
117 struct vm_object *v_object; /* Place to store VM object */
118 struct simplelock v_interlock; /* lock on usecount and flag */
119 struct lock *v_vnlock; /* used for non-locking fs's */
120 enum vtagtype v_tag; /* type of underlying data */
121 void *v_data; /* private data for fs */
122 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */
123 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */
124 struct vnode *v_dd; /* .. vnode */
125 u_long v_ddid; /* .. capability identifier */
126 struct {
127 struct simplelock vpi_lock; /* lock to protect below */
128 struct selinfo vpi_selinfo; /* identity of poller(s) */
129 short vpi_events; /* what they are looking for */
130 short vpi_revents; /* what has happened */
131 } v_pollinfo;
132 struct proc *v_vxproc; /* proc owning VXLOCK */
133#ifdef DEBUG_LOCKS
134 const char *filename; /* Source file doing locking */
135 int line; /* Line number doing locking */
136#endif
137};
138#define v_mountedhere v_un.vu_mountedhere
139#define v_socket v_un.vu_socket
140#define v_rdev v_un.vu_spec.vu_specinfo
141#define v_specnext v_un.vu_spec.vu_specnext
142#define v_fifoinfo v_un.vu_fifoinfo
143
144#define VN_POLLEVENT(vp, events) \
145 do { \
146 if ((vp)->v_pollinfo.vpi_events & (events)) \
147 vn_pollevent((vp), (events)); \
148 } while (0)
149
150/*
151 * Vnode flags.
152 */
153#define VROOT 0x00001 /* root of its file system */
154#define VTEXT 0x00002 /* vnode is a pure text prototype */
155#define VSYSTEM 0x00004 /* vnode being used by kernel */
156#define VISTTY 0x00008 /* vnode represents a tty */
157#define VXLOCK 0x00100 /* vnode is locked to change underlying type */
158#define VXWANT 0x00200 /* process is waiting for vnode */
159#define VBWAIT 0x00400 /* waiting for output to complete */
160/* open for business 0x00800 */
161/* open for business 0x01000 */
162#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
163/* open for business 0x04000 */
164#define VAGE 0x08000 /* Insert vnode at head of free list */
165#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
166#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
167#define VDOOMED 0x40000 /* This vnode is being recycled */
168#define VFREE 0x80000 /* This vnode is on the freelist */
169#define VONWORKLST 0x200000 /* On syncer work-list */
170#define VMOUNT 0x400000 /* Mount in progress */
171#define VOBJDIRTY 0x800000 /* object might be dirty */
172
173/*
174 * Vnode attributes. A field value of VNOVAL represents a field whose value
175 * is unavailable (getattr) or which is not to be changed (setattr).
176 */
177struct vattr {
178 enum vtype va_type; /* vnode type (for create) */
179 u_short va_mode; /* files access mode and type */
180 short va_nlink; /* number of references to file */
181 uid_t va_uid; /* owner user id */
182 gid_t va_gid; /* owner group id */
183 udev_t va_fsid; /* file system id */
184 long va_fileid; /* file id */
185 u_quad_t va_size; /* file size in bytes */
186 long va_blocksize; /* blocksize preferred for i/o */
187 struct timespec va_atime; /* time of last access */
188 struct timespec va_mtime; /* time of last modification */
189 struct timespec va_ctime; /* time file changed */
190 u_long va_gen; /* generation number of file */
191 u_long va_flags; /* flags defined for file */
192 udev_t va_rdev; /* device the special file represents */
193 u_quad_t va_bytes; /* bytes of disk space held by file */
194 u_quad_t va_filerev; /* file modification number */
195 u_int va_vaflags; /* operations flags, see below */
196 long va_spare; /* remain quad aligned */
197};
198
199/*
200 * Flags for va_vaflags.
201 */
202#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
203#define VA_EXCLUSIVE 0x02 /* exclusive create request */
204
205/*
206 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
207 * help with write clustering)
208 */
209#define IO_UNIT 0x01 /* do I/O as atomic unit */
210#define IO_APPEND 0x02 /* append write to end */
211#define IO_SYNC 0x04 /* do I/O synchronously */
212#define IO_NODELOCKED 0x08 /* underlying node already locked */
213#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */
214#define IO_VMIO 0x20 /* data already in VMIO space */
215#define IO_INVAL 0x40 /* invalidate after I/O */
216#define IO_ASYNC 0x80 /* bawrite rather then bdwrite */
217#define IO_DIRECT 0x100 /* attempt to bypass buffer cache */
218#define IO_NOWDRAIN 0x200 /* do not block on wdrain */
219
220#define IO_SEQMAX 0x7F /* seq heuristic max value */
221#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
222
223/*
224 * Modes. Some values same as Ixxx entries from inode.h for now.
225 */
226#define VSUID 04000 /* set user id on execution */
227#define VSGID 02000 /* set group id on execution */
228#define VSVTX 01000 /* save swapped text even after use */
229#define VREAD 00400 /* read, write, execute permissions */
230#define VWRITE 00200
231#define VEXEC 00100
232
233/*
234 * Token indicating no attribute value yet assigned.
235 */
236#define VNOVAL (-1)
237
238/*
239 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
240 */
241#define VLKTIMEOUT (hz / 20 + 1)
242
243#ifdef _KERNEL
244
245#ifdef MALLOC_DECLARE
246MALLOC_DECLARE(M_VNODE);
247#endif
248
249/*
250 * Convert between vnode types and inode formats (since POSIX.1
251 * defines mode word of stat structure in terms of inode formats).
252 */
253extern enum vtype iftovt_tab[];
254extern int vttoif_tab[];
255#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
256#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
257#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
258
259/*
260 * Flags to various vnode functions.
261 */
262#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
263#define FORCECLOSE 0x0002 /* vflush: force file closure */
264#define WRITECLOSE 0x0004 /* vflush: only close writable files */
265#define DOCLOSE 0x0008 /* vclean: close active files */
266#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
267#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
268
269#define VREF(vp) vref(vp)
270
271
272#ifdef DIAGNOSTIC
273#define VATTR_NULL(vap) vattr_null(vap)
274#else
275#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
276#endif /* DIAGNOSTIC */
277
278#define NULLVP ((struct vnode *)NULL)
279
280#define VNODEOP_SET(f) \
281 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
282 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
283
284/*
285 * Global vnode data.
286 */
287extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
288extern int desiredvnodes; /* number of vnodes desired */
289extern time_t syncdelay; /* max time to delay syncing data */
290extern time_t filedelay; /* time to delay syncing files */
291extern time_t dirdelay; /* time to delay syncing directories */
292extern time_t metadelay; /* time to delay syncing metadata */
293extern struct vm_zone *namei_zone;
294extern int prtactive; /* nonzero to call vprint() */
295extern struct vattr va_null; /* predefined null vattr structure */
296extern int vfs_ioopt;
297
298/*
299 * Macro/function to check for client cache inconsistency w.r.t. leasing.
300 */
301#define LEASE_READ 0x1 /* Check lease for readers */
302#define LEASE_WRITE 0x2 /* Check lease for modifiers */
303
304
305extern void (*lease_updatetime) __P((int deltat));
306
307#define VSHOULDFREE(vp) \
308 (!((vp)->v_flag & (VFREE|VDOOMED)) && \
309 !(vp)->v_holdcnt && !(vp)->v_usecount && \
310 (!(vp)->v_object || \
311 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
312
313#define VMIGHTFREE(vp) \
314 (!((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) && \
315 LIST_EMPTY(&(vp)->v_cache_src) && !(vp)->v_usecount)
316
317#define VSHOULDBUSY(vp) \
318 (((vp)->v_flag & VFREE) && \
319 ((vp)->v_holdcnt || (vp)->v_usecount))
320
321#define VI_LOCK(vp) simple_lock(&(vp)->v_interlock)
322#define VI_TRYLOCK(vp) simple_lock_try(&(vp)->v_interlock)
323#define VI_UNLOCK(vp) simple_unlock(&(vp)->v_interlock)
324
325#endif /* _KERNEL */
326
327
328/*
329 * Mods for extensibility.
330 */
331
332/*
333 * Flags for vdesc_flags:
334 */
335#define VDESC_MAX_VPS 16
336/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
337#define VDESC_VP0_WILLRELE 0x0001
338#define VDESC_VP1_WILLRELE 0x0002
339#define VDESC_VP2_WILLRELE 0x0004
340#define VDESC_VP3_WILLRELE 0x0008
341#define VDESC_NOMAP_VPP 0x0100
342#define VDESC_VPP_WILLRELE 0x0200
343
344/*
345 * VDESC_NO_OFFSET is used to identify the end of the offset list
346 * and in places where no such field exists.
347 */
348#define VDESC_NO_OFFSET -1
349
350/*
351 * This structure describes the vnode operation taking place.
352 */
353struct vnodeop_desc {
354 int vdesc_offset; /* offset in vector--first for speed */
355 char *vdesc_name; /* a readable name for debugging */
356 int vdesc_flags; /* VDESC_* flags */
357
358 /*
359 * These ops are used by bypass routines to map and locate arguments.
360 * Creds and procs are not needed in bypass routines, but sometimes
361 * they are useful to (for example) transport layers.
362 * Nameidata is useful because it has a cred in it.
363 */
364 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
365 int vdesc_vpp_offset; /* return vpp location */
366 int vdesc_cred_offset; /* cred location, if any */
367 int vdesc_proc_offset; /* proc location, if any */
368 int vdesc_componentname_offset; /* if any */
369 /*
370 * Finally, we've got a list of private data (about each operation)
371 * for each transport layer. (Support to manage this list is not
372 * yet part of BSD.)
373 */
374 caddr_t *vdesc_transports;
375};
376
377#ifdef _KERNEL
378/*
379 * A list of all the operation descs.
380 */
381extern struct vnodeop_desc *vnodeop_descs[];
382
383/*
384 * Interlock for scanning list of vnodes attached to a mountpoint
385 */
386extern struct simplelock mntvnode_slock;
387
388/*
389 * This macro is very helpful in defining those offsets in the vdesc struct.
390 *
391 * This is stolen from X11R4. I ignored all the fancy stuff for
392 * Crays, so if you decide to port this to such a serious machine,
393 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
394 */
395#define VOPARG_OFFSET(p_type,field) \
396 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
397#define VOPARG_OFFSETOF(s_type,field) \
398 VOPARG_OFFSET(s_type*,field)
399#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
400 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
401
402
403/*
404 * This structure is used to configure the new vnodeops vector.
405 */
406struct vnodeopv_entry_desc {
407 struct vnodeop_desc *opve_op; /* which operation this is */
408 vop_t *opve_impl; /* code implementing this operation */
409};
410struct vnodeopv_desc {
411 /* ptr to the ptr to the vector where op should go */
412 vop_t ***opv_desc_vector_p;
413 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
414};
415
416/*
417 * A generic structure.
418 * This can be used by bypass routines to identify generic arguments.
419 */
420struct vop_generic_args {
421 struct vnodeop_desc *a_desc;
422 /* other random data follows, presumably */
423};
424
425
426#ifdef DEBUG_VFS_LOCKS
427/*
428 * Macros to aid in tracing VFS locking problems. Not totally
429 * reliable since if the process sleeps between changing the lock
430 * state and checking it with the assert, some other process could
431 * change the state. They are good enough for debugging a single
432 * filesystem using a single-threaded test. I find that 'cvs co src'
433 * is a pretty good test.
434 */
435
436/*
437 * [dfr] Kludge until I get around to fixing all the vfs locking.
438 */
439#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
440 || (vp)->v_tag == VT_MFS \
441 || (vp)->v_tag == VT_NFS \
442 || (vp)->v_tag == VT_LFS \
443 || (vp)->v_tag == VT_ISOFS \
444 || (vp)->v_tag == VT_MSDOSFS)
445
446#define ASSERT_VOP_LOCKED(vp, str) \
447do { \
448 struct vnode *_vp = (vp); \
449 \
450 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \
451 panic("%s: %p is not locked but should be", str, _vp); \
452} while (0)
453
454#define ASSERT_VOP_UNLOCKED(vp, str) \
455do { \
456 struct vnode *_vp = (vp); \
457 int lockstate; \
458 \
459 if (_vp && IS_LOCKING_VFS(_vp)) { \
460 lockstate = VOP_ISLOCKED(_vp, curproc); \
461 if (lockstate == LK_EXCLUSIVE) \
462 panic("%s: %p is locked but should not be", \
463 str, _vp); \
464 } \
465} while (0)
466
467#define ASSERT_VOP_ELOCKED(vp, str) \
468do { \
469 struct vnode *_vp = (vp); \
470 \
471 if (_vp && IS_LOCKING_VFS(_vp) && \
472 VOP_ISLOCKED(_vp, curproc) != LK_EXCLUSIVE) \
473 panic("%s: %p is not exclusive locked but should be", \
474 str, _vp); \
475} while (0)
476
477#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
478do { \
479 struct vnode *_vp = (vp); \
480 \
481 if (_vp && IS_LOCKING_VFS(_vp) && \
482 VOP_ISLOCKED(_vp, curproc) != LK_EXCLOTHER) \
483 panic("%s: %p is not exclusive locked by another proc", \
484 str, _vp); \
485} while (0)
486
487#define ASSERT_VOP_SLOCKED(vp, str) \
488do { \
489 struct vnode *_vp = (vp); \
490 \
491 if (_vp && IS_LOCKING_VFS(_vp) && \
492 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
493 panic("%s: %p is not locked shared but should be", \
494 str, _vp); \
495} while (0)
496
497#else
498
499#define ASSERT_VOP_LOCKED(vp, str)
500#define ASSERT_VOP_UNLOCKED(vp, str)
501
502#endif
503
504/*
505 * VOCALL calls an op given an ops vector. We break it out because BSD's
506 * vclean changes the ops vector and then wants to call ops with the old
507 * vector.
508 */
509#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
510
511/*
512 * This call works for vnodes in the kernel.
513 */
514#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
515#define VDESC(OP) (& __CONCAT(OP,_desc))
516#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
517
518/*
519 * VMIO support inline
520 */
521
522extern int vmiodirenable;
523
524static __inline int
525vn_canvmio(struct vnode *vp)
526{
527 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
528 return(TRUE);
529 return(FALSE);
530}
531
532/*
533 * Finally, include the default set of vnode operations.
534 */
535#include "vnode_if.h"
536
537/*
538 * Public vnode manipulation functions.
539 */
540struct componentname;
541struct file;
542struct mount;
543struct nameidata;
544struct ostat;
545struct proc;
546struct stat;
547struct nstat;
548struct ucred;
549struct uio;
550struct vattr;
551struct vnode;
552struct vop_bwrite_args;
553
554extern int (*lease_check_hook) __P((struct vop_lease_args *));
555
556void addalias __P((struct vnode *vp, dev_t nvp_rdev));
557void addaliasu __P((struct vnode *vp, udev_t nvp_rdev));
558int bdevvp __P((dev_t dev, struct vnode **vpp));
559/* cache_* may belong in namei.h. */
560void cache_enter __P((struct vnode *dvp, struct vnode *vp,
561 struct componentname *cnp));
562int cache_lookup __P((struct vnode *dvp, struct vnode **vpp,
563 struct componentname *cnp));
564void cache_purge __P((struct vnode *vp));
565void cache_purgevfs __P((struct mount *mp));
566int cache_leaf_test __P((struct vnode *vp));
567void cvtstat __P((struct stat *st, struct ostat *ost));
568void cvtnstat __P((struct stat *sb, struct nstat *nsb));
569int getnewvnode __P((enum vtagtype tag,
570 struct mount *mp, vop_t **vops, struct vnode **vpp));
571int lease_check __P((struct vop_lease_args *ap));
572int spec_vnoperate __P((struct vop_generic_args *));
573int speedup_syncer __P((void));
574int textvp_fullpath __P((struct proc *p, char **retbuf, char **retfreebuf));
575void vattr_null __P((struct vattr *vap));
576int vcount __P((struct vnode *vp));
577void vdrop __P((struct vnode *));
578int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp));
579void vfs_add_vnodeops __P((const void *));
580void vfs_rm_vnodeops __P((const void *));
581int vflush __P((struct mount *mp, int rootrefs, int flags));
582int vget __P((struct vnode *vp, int lockflag, struct proc *p));
583void vgone __P((struct vnode *vp));
584void vgonel __P((struct vnode *vp, struct proc *p));
585void vhold __P((struct vnode *));
586int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred,
587
588 struct proc *p, int slpflag, int slptimeo));
589int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p,
590 off_t length, int blksize));
591void vprint __P((char *label, struct vnode *vp));
592int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp,
593 struct proc *p));
594int vn_close __P((struct vnode *vp,
595 int flags, struct ucred *cred, struct proc *p));
596int vn_isdisk __P((struct vnode *vp, int *errp));
597int vn_lock __P((struct vnode *vp, int flags, struct proc *p));
598#ifdef DEBUG_LOCKS
599int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p,
600 const char *filename, int line));
601#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
602#endif
603int vn_open __P((struct nameidata *ndp, int fmode, int cmode));
604void vn_pollevent __P((struct vnode *vp, int events));
605void vn_pollgone __P((struct vnode *vp));
606int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events));
607int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base,
608 int len, off_t offset, enum uio_seg segflg, int ioflg,
609 struct ucred *cred, int *aresid, struct proc *p));
610int vn_rdwr_inchunks __P((enum uio_rw rw, struct vnode *vp, caddr_t base,
611 int len, off_t offset, enum uio_seg segflg, int ioflg,
612 struct ucred *cred, int *aresid, struct proc *p));
613int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p));
614dev_t vn_todev __P((struct vnode *vp));
615int vfs_cache_lookup __P((struct vop_lookup_args *ap));
616int vfs_object_create __P((struct vnode *vp, struct proc *p,
617 struct ucred *cred));
618void vfs_timestamp __P((struct timespec *));
619int vn_writechk __P((struct vnode *vp));
620int vop_stdbwrite __P((struct vop_bwrite_args *ap));
621int vop_stdislocked __P((struct vop_islocked_args *));
622int vop_stdlock __P((struct vop_lock_args *));
623int vop_stdunlock __P((struct vop_unlock_args *));
624int vop_noislocked __P((struct vop_islocked_args *));
625int vop_nolock __P((struct vop_lock_args *));
626int vop_nopoll __P((struct vop_poll_args *));
627int vop_nounlock __P((struct vop_unlock_args *));
628int vop_stdpathconf __P((struct vop_pathconf_args *));
629int vop_stdpoll __P((struct vop_poll_args *));
630int vop_revoke __P((struct vop_revoke_args *));
631int vop_sharedlock __P((struct vop_lock_args *));
632int vop_eopnotsupp __P((struct vop_generic_args *ap));
633int vop_ebadf __P((struct vop_generic_args *ap));
634int vop_einval __P((struct vop_generic_args *ap));
635int vop_enotty __P((struct vop_generic_args *ap));
636int vop_defaultop __P((struct vop_generic_args *ap));
637int vop_null __P((struct vop_generic_args *ap));
638int vop_panic __P((struct vop_generic_args *ap));
639int vop_stdcreatevobject __P((struct vop_createvobject_args *ap));
640int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap));
641int vop_stdgetvobject __P((struct vop_getvobject_args *ap));
642
643void vfree __P((struct vnode *vp));
644void vput __P((struct vnode *vp));
645void vrele __P((struct vnode *vp));
646void vref __P((struct vnode *vp));
647void vbusy __P((struct vnode *vp));
648
649extern vop_t **default_vnodeop_p;
650extern vop_t **spec_vnodeop_p;
651
652#endif /* _KERNEL */
653
654#endif /* !_SYS_VNODE_H_ */