Last commit was completely wrong. Reverting to old revision of file.
[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 $
7ea21ed1 35 * $DragonFly: src/sys/sys/vnode.h,v 1.8 2003/09/28 03:44:09 dillon Exp $
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36 */
37
38#ifndef _SYS_VNODE_H_
39#define _SYS_VNODE_H_
40
41#include <sys/queue.h>
42#include <sys/lock.h>
43#include <sys/select.h>
44#include <sys/uio.h>
45#include <sys/acl.h>
7ea21ed1 46#include <sys/namecache.h>
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47
48#include <machine/lock.h>
49
50/*
51 * The vnode is the focus of all file activity in UNIX. There is a
52 * unique vnode allocated for each active file, each current directory,
53 * each mounted-on file, text file, and the root.
54 */
55
56/*
57 * Vnode types. VNON means no type.
58 */
59enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
60
61/*
62 * Vnode tag types.
63 * These are for the benefit of external programs only (e.g., pstat)
64 * and should NEVER be inspected by the kernel.
65 */
66enum vtagtype {
67 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
68 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
69 VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS,
70 VT_HPFS, VT_NWFS, VT_SMBFS
71};
72
73/*
74 * Each underlying filesystem allocates its own private area and hangs
75 * it from v_data. If non-null, this area is freed in getnewvnode().
76 */
77TAILQ_HEAD(buflists, buf);
78
b153f746 79typedef int vop_t (void *);
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80
81/*
82 * Reading or writing any of these items requires holding the appropriate lock.
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83 * v_freelist is locked by the global vnode_free_list token.
84 * v_mntvnodes is locked by the global mntvnodes token.
984263bc 85 * v_flag, v_usecount, v_holdcount and v_writecount are
8a8d5d85 86 * locked by the v_interlock token.
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87 * v_pollinfo is locked by the lock contained inside it.
88 */
89struct vnode {
90 u_long v_flag; /* vnode flags (see below) */
91 int v_usecount; /* reference count of users */
92 int v_writecount; /* reference count of writers */
93 int v_holdcnt; /* page & buffer references */
94 u_long v_id; /* capability identifier */
95 struct mount *v_mount; /* ptr to vfs we are in */
96 vop_t **v_op; /* vnode operations vector */
97 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
98 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
99 struct buflists v_cleanblkhd; /* clean blocklist head */
100 struct buflists v_dirtyblkhd; /* dirty blocklist head */
101 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
102 long v_numoutput; /* num of writes in progress */
103 enum vtype v_type; /* vnode type */
104 union {
105 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
106 struct socket *vu_socket; /* unix ipc (VSOCK) */
107 struct {
108 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
109 SLIST_ENTRY(vnode) vu_specnext;
110 } vu_spec;
111 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
112 } v_un;
113 struct nqlease *v_lease; /* Soft reference to lease */
114 daddr_t v_lastw; /* last write (write cluster) */
115 daddr_t v_cstart; /* start block of cluster */
116 daddr_t v_lasta; /* last allocation */
117 int v_clen; /* length of current cluster */
118 struct vm_object *v_object; /* Place to store VM object */
8a8d5d85 119 struct lwkt_token v_interlock; /* lock on usecount and flag */
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120 struct lock *v_vnlock; /* used for non-locking fs's */
121 enum vtagtype v_tag; /* type of underlying data */
122 void *v_data; /* private data for fs */
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123
124 /*
125 * YYY note: v_dd, v_ddid will become obsolete once the namecache
126 * code is finished.
127 */
128 struct namecache_list v_namecache; /* associated nc entries */
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129 struct vnode *v_dd; /* .. vnode */
130 u_long v_ddid; /* .. capability identifier */
131 struct {
8a8d5d85 132 struct lwkt_token vpi_token; /* lock to protect below */
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133 struct selinfo vpi_selinfo; /* identity of poller(s) */
134 short vpi_events; /* what they are looking for */
135 short vpi_revents; /* what has happened */
136 } v_pollinfo;
137 struct proc *v_vxproc; /* proc owning VXLOCK */
138#ifdef DEBUG_LOCKS
139 const char *filename; /* Source file doing locking */
140 int line; /* Line number doing locking */
141#endif
142};
143#define v_mountedhere v_un.vu_mountedhere
144#define v_socket v_un.vu_socket
145#define v_rdev v_un.vu_spec.vu_specinfo
146#define v_specnext v_un.vu_spec.vu_specnext
147#define v_fifoinfo v_un.vu_fifoinfo
148
149#define VN_POLLEVENT(vp, events) \
150 do { \
151 if ((vp)->v_pollinfo.vpi_events & (events)) \
152 vn_pollevent((vp), (events)); \
153 } while (0)
154
155/*
156 * Vnode flags.
157 */
158#define VROOT 0x00001 /* root of its file system */
159#define VTEXT 0x00002 /* vnode is a pure text prototype */
160#define VSYSTEM 0x00004 /* vnode being used by kernel */
161#define VISTTY 0x00008 /* vnode represents a tty */
162#define VXLOCK 0x00100 /* vnode is locked to change underlying type */
163#define VXWANT 0x00200 /* process is waiting for vnode */
164#define VBWAIT 0x00400 /* waiting for output to complete */
165/* open for business 0x00800 */
166/* open for business 0x01000 */
167#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
168/* open for business 0x04000 */
169#define VAGE 0x08000 /* Insert vnode at head of free list */
170#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
171#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
172#define VDOOMED 0x40000 /* This vnode is being recycled */
173#define VFREE 0x80000 /* This vnode is on the freelist */
174#define VONWORKLST 0x200000 /* On syncer work-list */
175#define VMOUNT 0x400000 /* Mount in progress */
176#define VOBJDIRTY 0x800000 /* object might be dirty */
177
178/*
179 * Vnode attributes. A field value of VNOVAL represents a field whose value
180 * is unavailable (getattr) or which is not to be changed (setattr).
181 */
182struct vattr {
183 enum vtype va_type; /* vnode type (for create) */
184 u_short va_mode; /* files access mode and type */
185 short va_nlink; /* number of references to file */
186 uid_t va_uid; /* owner user id */
187 gid_t va_gid; /* owner group id */
188 udev_t va_fsid; /* file system id */
189 long va_fileid; /* file id */
190 u_quad_t va_size; /* file size in bytes */
191 long va_blocksize; /* blocksize preferred for i/o */
192 struct timespec va_atime; /* time of last access */
193 struct timespec va_mtime; /* time of last modification */
194 struct timespec va_ctime; /* time file changed */
195 u_long va_gen; /* generation number of file */
196 u_long va_flags; /* flags defined for file */
197 udev_t va_rdev; /* device the special file represents */
198 u_quad_t va_bytes; /* bytes of disk space held by file */
199 u_quad_t va_filerev; /* file modification number */
200 u_int va_vaflags; /* operations flags, see below */
201 long va_spare; /* remain quad aligned */
202};
203
204/*
205 * Flags for va_vaflags.
206 */
207#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
208#define VA_EXCLUSIVE 0x02 /* exclusive create request */
209
210/*
211 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
212 * help with write clustering)
213 */
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214#define IO_UNIT 0x0001 /* do I/O as atomic unit */
215#define IO_APPEND 0x0002 /* append write to end */
216#define IO_SYNC 0x0004 /* do I/O synchronously */
217#define IO_NODELOCKED 0x0008 /* underlying node already locked */
218#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
219#define IO_VMIO 0x0020 /* data already in VMIO space */
220#define IO_INVAL 0x0040 /* invalidate after I/O */
221#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
222#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
223#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
224#define IO_CORE 0x0400 /* I/O is part of core dump */
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225
226#define IO_SEQMAX 0x7F /* seq heuristic max value */
227#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
228
229/*
230 * Modes. Some values same as Ixxx entries from inode.h for now.
231 */
232#define VSUID 04000 /* set user id on execution */
233#define VSGID 02000 /* set group id on execution */
234#define VSVTX 01000 /* save swapped text even after use */
235#define VREAD 00400 /* read, write, execute permissions */
236#define VWRITE 00200
237#define VEXEC 00100
238
239/*
240 * Token indicating no attribute value yet assigned.
241 */
242#define VNOVAL (-1)
243
244/*
245 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
246 */
247#define VLKTIMEOUT (hz / 20 + 1)
248
249#ifdef _KERNEL
250
251#ifdef MALLOC_DECLARE
252MALLOC_DECLARE(M_VNODE);
253#endif
254
255/*
256 * Convert between vnode types and inode formats (since POSIX.1
257 * defines mode word of stat structure in terms of inode formats).
258 */
259extern enum vtype iftovt_tab[];
260extern int vttoif_tab[];
261#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
262#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
263#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
264
265/*
266 * Flags to various vnode functions.
267 */
268#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
269#define FORCECLOSE 0x0002 /* vflush: force file closure */
270#define WRITECLOSE 0x0004 /* vflush: only close writable files */
271#define DOCLOSE 0x0008 /* vclean: close active files */
272#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
273#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
274
275#define VREF(vp) vref(vp)
276
277
278#ifdef DIAGNOSTIC
279#define VATTR_NULL(vap) vattr_null(vap)
280#else
281#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
282#endif /* DIAGNOSTIC */
283
284#define NULLVP ((struct vnode *)NULL)
285
286#define VNODEOP_SET(f) \
287 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
288 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
289
290/*
291 * Global vnode data.
292 */
293extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
294extern int desiredvnodes; /* number of vnodes desired */
295extern time_t syncdelay; /* max time to delay syncing data */
296extern time_t filedelay; /* time to delay syncing files */
297extern time_t dirdelay; /* time to delay syncing directories */
298extern time_t metadelay; /* time to delay syncing metadata */
299extern struct vm_zone *namei_zone;
300extern int prtactive; /* nonzero to call vprint() */
301extern struct vattr va_null; /* predefined null vattr structure */
302extern int vfs_ioopt;
303
304/*
305 * Macro/function to check for client cache inconsistency w.r.t. leasing.
306 */
307#define LEASE_READ 0x1 /* Check lease for readers */
308#define LEASE_WRITE 0x2 /* Check lease for modifiers */
309
310
b153f746 311extern void (*lease_updatetime) (int deltat);
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312
313#define VSHOULDFREE(vp) \
314 (!((vp)->v_flag & (VFREE|VDOOMED)) && \
315 !(vp)->v_holdcnt && !(vp)->v_usecount && \
316 (!(vp)->v_object || \
317 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
318
319#define VMIGHTFREE(vp) \
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320 (((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) == 0 && \
321 cache_leaf_test(vp) == 0 && (vp)->v_usecount == 0)
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322
323#define VSHOULDBUSY(vp) \
324 (((vp)->v_flag & VFREE) && \
325 ((vp)->v_holdcnt || (vp)->v_usecount))
326
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327#define VI_LOCK(vp) lwkt_gettoken(&(vp)->v_interlock)
328#define VI_UNLOCK(vp) lwkt_reltoken(&(vp)->v_interlock)
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329
330#endif /* _KERNEL */
331
332
333/*
334 * Mods for extensibility.
335 */
336
337/*
338 * Flags for vdesc_flags:
339 */
340#define VDESC_MAX_VPS 16
341/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
342#define VDESC_VP0_WILLRELE 0x0001
343#define VDESC_VP1_WILLRELE 0x0002
344#define VDESC_VP2_WILLRELE 0x0004
345#define VDESC_VP3_WILLRELE 0x0008
346#define VDESC_NOMAP_VPP 0x0100
347#define VDESC_VPP_WILLRELE 0x0200
348
349/*
350 * VDESC_NO_OFFSET is used to identify the end of the offset list
351 * and in places where no such field exists.
352 */
353#define VDESC_NO_OFFSET -1
354
355/*
356 * This structure describes the vnode operation taking place.
357 */
358struct vnodeop_desc {
359 int vdesc_offset; /* offset in vector--first for speed */
360 char *vdesc_name; /* a readable name for debugging */
361 int vdesc_flags; /* VDESC_* flags */
362
363 /*
364 * These ops are used by bypass routines to map and locate arguments.
365 * Creds and procs are not needed in bypass routines, but sometimes
366 * they are useful to (for example) transport layers.
367 * Nameidata is useful because it has a cred in it.
368 */
369 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
370 int vdesc_vpp_offset; /* return vpp location */
371 int vdesc_cred_offset; /* cred location, if any */
372 int vdesc_proc_offset; /* proc location, if any */
373 int vdesc_componentname_offset; /* if any */
374 /*
375 * Finally, we've got a list of private data (about each operation)
376 * for each transport layer. (Support to manage this list is not
377 * yet part of BSD.)
378 */
379 caddr_t *vdesc_transports;
380};
381
382#ifdef _KERNEL
383/*
384 * A list of all the operation descs.
385 */
386extern struct vnodeop_desc *vnodeop_descs[];
387
388/*
389 * Interlock for scanning list of vnodes attached to a mountpoint
390 */
8a8d5d85 391extern struct lwkt_token mntvnode_token;
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392
393/*
394 * This macro is very helpful in defining those offsets in the vdesc struct.
395 *
396 * This is stolen from X11R4. I ignored all the fancy stuff for
397 * Crays, so if you decide to port this to such a serious machine,
398 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
399 */
400#define VOPARG_OFFSET(p_type,field) \
401 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
402#define VOPARG_OFFSETOF(s_type,field) \
403 VOPARG_OFFSET(s_type*,field)
404#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
405 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
406
407
408/*
409 * This structure is used to configure the new vnodeops vector.
410 */
411struct vnodeopv_entry_desc {
412 struct vnodeop_desc *opve_op; /* which operation this is */
413 vop_t *opve_impl; /* code implementing this operation */
414};
415struct vnodeopv_desc {
416 /* ptr to the ptr to the vector where op should go */
417 vop_t ***opv_desc_vector_p;
418 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
419};
420
421/*
422 * A generic structure.
423 * This can be used by bypass routines to identify generic arguments.
424 */
425struct vop_generic_args {
426 struct vnodeop_desc *a_desc;
427 /* other random data follows, presumably */
428};
429
430
431#ifdef DEBUG_VFS_LOCKS
432/*
433 * Macros to aid in tracing VFS locking problems. Not totally
434 * reliable since if the process sleeps between changing the lock
435 * state and checking it with the assert, some other process could
436 * change the state. They are good enough for debugging a single
437 * filesystem using a single-threaded test. I find that 'cvs co src'
438 * is a pretty good test.
439 */
440
441/*
442 * [dfr] Kludge until I get around to fixing all the vfs locking.
443 */
444#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
445 || (vp)->v_tag == VT_MFS \
446 || (vp)->v_tag == VT_NFS \
447 || (vp)->v_tag == VT_LFS \
448 || (vp)->v_tag == VT_ISOFS \
449 || (vp)->v_tag == VT_MSDOSFS)
450
451#define ASSERT_VOP_LOCKED(vp, str) \
452do { \
453 struct vnode *_vp = (vp); \
454 \
455 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \
456 panic("%s: %p is not locked but should be", str, _vp); \
457} while (0)
458
459#define ASSERT_VOP_UNLOCKED(vp, str) \
460do { \
461 struct vnode *_vp = (vp); \
462 int lockstate; \
463 \
464 if (_vp && IS_LOCKING_VFS(_vp)) { \
dadab5e9 465 lockstate = VOP_ISLOCKED(_vp, curthread); \
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466 if (lockstate == LK_EXCLUSIVE) \
467 panic("%s: %p is locked but should not be", \
468 str, _vp); \
469 } \
470} while (0)
471
472#define ASSERT_VOP_ELOCKED(vp, str) \
473do { \
474 struct vnode *_vp = (vp); \
475 \
476 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 477 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
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478 panic("%s: %p is not exclusive locked but should be", \
479 str, _vp); \
480} while (0)
481
482#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
483do { \
484 struct vnode *_vp = (vp); \
485 \
486 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 487 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
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488 panic("%s: %p is not exclusive locked by another proc", \
489 str, _vp); \
490} while (0)
491
492#define ASSERT_VOP_SLOCKED(vp, str) \
493do { \
494 struct vnode *_vp = (vp); \
495 \
496 if (_vp && IS_LOCKING_VFS(_vp) && \
497 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
498 panic("%s: %p is not locked shared but should be", \
499 str, _vp); \
500} while (0)
501
502#else
503
504#define ASSERT_VOP_LOCKED(vp, str)
505#define ASSERT_VOP_UNLOCKED(vp, str)
506
507#endif
508
509/*
510 * VOCALL calls an op given an ops vector. We break it out because BSD's
511 * vclean changes the ops vector and then wants to call ops with the old
512 * vector.
513 */
514#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
515
516/*
517 * This call works for vnodes in the kernel.
518 */
519#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
520#define VDESC(OP) (& __CONCAT(OP,_desc))
521#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
522
523/*
524 * VMIO support inline
525 */
526
527extern int vmiodirenable;
528
529static __inline int
530vn_canvmio(struct vnode *vp)
531{
532 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
533 return(TRUE);
534 return(FALSE);
535}
536
537/*
538 * Finally, include the default set of vnode operations.
539 */
540#include "vnode_if.h"
541
542/*
543 * Public vnode manipulation functions.
544 */
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545struct file;
546struct mount;
547struct nameidata;
548struct ostat;
549struct proc;
dadab5e9 550struct thread;
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551struct stat;
552struct nstat;
553struct ucred;
554struct uio;
555struct vattr;
556struct vnode;
557struct vop_bwrite_args;
558
b153f746 559extern int (*lease_check_hook) (struct vop_lease_args *);
984263bc 560
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561void addalias (struct vnode *vp, dev_t nvp_rdev);
562void addaliasu (struct vnode *vp, udev_t nvp_rdev);
563int bdevvp (dev_t dev, struct vnode **vpp);
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564void cvtstat (struct stat *st, struct ostat *ost);
565void cvtnstat (struct stat *sb, struct nstat *nsb);
566int getnewvnode (enum vtagtype tag,
567 struct mount *mp, vop_t **vops, struct vnode **vpp);
568int lease_check (struct vop_lease_args *ap);
569int spec_vnoperate (struct vop_generic_args *);
570int speedup_syncer (void);
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571void vattr_null (struct vattr *vap);
572int vcount (struct vnode *vp);
573void vdrop (struct vnode *);
574int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
575void vfs_add_vnodeops (const void *);
576void vfs_rm_vnodeops (const void *);
577int vflush (struct mount *mp, int rootrefs, int flags);
578int vget (struct vnode *vp, int lockflag, struct thread *td);
579void vgone (struct vnode *vp);
580void vgonel (struct vnode *vp, struct thread *td);
581void vhold (struct vnode *);
582int vinvalbuf (struct vnode *vp, int save,
583 struct thread *td, int slpflag, int slptimeo);
584int vtruncbuf (struct vnode *vp, struct thread *td,
585 off_t length, int blksize);
586void vprint (char *label, struct vnode *vp);
587int vrecycle (struct vnode *vp, struct lwkt_token *inter_lkp,
588 struct thread *td);
589int vn_close (struct vnode *vp, int flags, struct thread *td);
590int vn_isdisk (struct vnode *vp, int *errp);
591int vn_lock (struct vnode *vp, int flags, struct thread *td);
984263bc 592#ifdef DEBUG_LOCKS
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593int debug_vn_lock (struct vnode *vp, int flags, struct thread *td,
594 const char *filename, int line);
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595#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
596#endif
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597int vn_open (struct nameidata *ndp, int fmode, int cmode);
598void vn_pollevent (struct vnode *vp, int events);
599void vn_pollgone (struct vnode *vp);
600int vn_pollrecord (struct vnode *vp, struct thread *td, int events);
601int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 602 int len, off_t offset, enum uio_seg segflg, int ioflg,
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603 struct ucred *cred, int *aresid, struct thread *td);
604int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 605 int len, off_t offset, enum uio_seg segflg, int ioflg,
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606 struct ucred *cred, int *aresid, struct thread *td);
607int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td);
608dev_t vn_todev (struct vnode *vp);
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609int vfs_object_create (struct vnode *vp, struct thread *td);
610void vfs_timestamp (struct timespec *);
611int vn_writechk (struct vnode *vp);
612int vop_stdbwrite (struct vop_bwrite_args *ap);
613int vop_stdislocked (struct vop_islocked_args *);
614int vop_stdlock (struct vop_lock_args *);
615int vop_stdunlock (struct vop_unlock_args *);
616int vop_noislocked (struct vop_islocked_args *);
617int vop_nolock (struct vop_lock_args *);
618int vop_nopoll (struct vop_poll_args *);
619int vop_nounlock (struct vop_unlock_args *);
620int vop_stdpathconf (struct vop_pathconf_args *);
621int vop_stdpoll (struct vop_poll_args *);
622int vop_revoke (struct vop_revoke_args *);
623int vop_sharedlock (struct vop_lock_args *);
624int vop_eopnotsupp (struct vop_generic_args *ap);
625int vop_ebadf (struct vop_generic_args *ap);
626int vop_einval (struct vop_generic_args *ap);
627int vop_enotty (struct vop_generic_args *ap);
628int vop_defaultop (struct vop_generic_args *ap);
629int vop_null (struct vop_generic_args *ap);
630int vop_panic (struct vop_generic_args *ap);
631int vop_stdcreatevobject (struct vop_createvobject_args *ap);
632int vop_stddestroyvobject (struct vop_destroyvobject_args *ap);
633int vop_stdgetvobject (struct vop_getvobject_args *ap);
634
635void vfree (struct vnode *vp);
636void vput (struct vnode *vp);
637void vrele (struct vnode *vp);
638void vref (struct vnode *vp);
639void vbusy (struct vnode *vp);
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640
641extern vop_t **default_vnodeop_p;
642extern vop_t **spec_vnodeop_p;
643
644#endif /* _KERNEL */
645
646#endif /* !_SYS_VNODE_H_ */