Merge FreeBSD rev. 1.8:
[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 $
29802dbb 35 * $DragonFly: src/sys/sys/vnode.h,v 1.9 2004/01/20 18:41:51 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 */
29802dbb 138 struct vmresident *v_resident; /* optional vmresident */
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139#ifdef DEBUG_LOCKS
140 const char *filename; /* Source file doing locking */
141 int line; /* Line number doing locking */
142#endif
143};
144#define v_mountedhere v_un.vu_mountedhere
145#define v_socket v_un.vu_socket
146#define v_rdev v_un.vu_spec.vu_specinfo
147#define v_specnext v_un.vu_spec.vu_specnext
148#define v_fifoinfo v_un.vu_fifoinfo
149
150#define VN_POLLEVENT(vp, events) \
151 do { \
152 if ((vp)->v_pollinfo.vpi_events & (events)) \
153 vn_pollevent((vp), (events)); \
154 } while (0)
155
156/*
157 * Vnode flags.
158 */
159#define VROOT 0x00001 /* root of its file system */
160#define VTEXT 0x00002 /* vnode is a pure text prototype */
161#define VSYSTEM 0x00004 /* vnode being used by kernel */
162#define VISTTY 0x00008 /* vnode represents a tty */
163#define VXLOCK 0x00100 /* vnode is locked to change underlying type */
164#define VXWANT 0x00200 /* process is waiting for vnode */
165#define VBWAIT 0x00400 /* waiting for output to complete */
166/* open for business 0x00800 */
167/* open for business 0x01000 */
168#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
169/* open for business 0x04000 */
170#define VAGE 0x08000 /* Insert vnode at head of free list */
171#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
172#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
173#define VDOOMED 0x40000 /* This vnode is being recycled */
174#define VFREE 0x80000 /* This vnode is on the freelist */
175#define VONWORKLST 0x200000 /* On syncer work-list */
176#define VMOUNT 0x400000 /* Mount in progress */
177#define VOBJDIRTY 0x800000 /* object might be dirty */
178
179/*
180 * Vnode attributes. A field value of VNOVAL represents a field whose value
181 * is unavailable (getattr) or which is not to be changed (setattr).
182 */
183struct vattr {
184 enum vtype va_type; /* vnode type (for create) */
185 u_short va_mode; /* files access mode and type */
186 short va_nlink; /* number of references to file */
187 uid_t va_uid; /* owner user id */
188 gid_t va_gid; /* owner group id */
189 udev_t va_fsid; /* file system id */
190 long va_fileid; /* file id */
191 u_quad_t va_size; /* file size in bytes */
192 long va_blocksize; /* blocksize preferred for i/o */
193 struct timespec va_atime; /* time of last access */
194 struct timespec va_mtime; /* time of last modification */
195 struct timespec va_ctime; /* time file changed */
196 u_long va_gen; /* generation number of file */
197 u_long va_flags; /* flags defined for file */
198 udev_t va_rdev; /* device the special file represents */
199 u_quad_t va_bytes; /* bytes of disk space held by file */
200 u_quad_t va_filerev; /* file modification number */
201 u_int va_vaflags; /* operations flags, see below */
202 long va_spare; /* remain quad aligned */
203};
204
205/*
206 * Flags for va_vaflags.
207 */
208#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
209#define VA_EXCLUSIVE 0x02 /* exclusive create request */
210
211/*
212 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
213 * help with write clustering)
214 */
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215#define IO_UNIT 0x0001 /* do I/O as atomic unit */
216#define IO_APPEND 0x0002 /* append write to end */
217#define IO_SYNC 0x0004 /* do I/O synchronously */
218#define IO_NODELOCKED 0x0008 /* underlying node already locked */
219#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
220#define IO_VMIO 0x0020 /* data already in VMIO space */
221#define IO_INVAL 0x0040 /* invalidate after I/O */
222#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
223#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
224#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
225#define IO_CORE 0x0400 /* I/O is part of core dump */
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226
227#define IO_SEQMAX 0x7F /* seq heuristic max value */
228#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
229
230/*
231 * Modes. Some values same as Ixxx entries from inode.h for now.
232 */
233#define VSUID 04000 /* set user id on execution */
234#define VSGID 02000 /* set group id on execution */
235#define VSVTX 01000 /* save swapped text even after use */
236#define VREAD 00400 /* read, write, execute permissions */
237#define VWRITE 00200
238#define VEXEC 00100
239
240/*
241 * Token indicating no attribute value yet assigned.
242 */
243#define VNOVAL (-1)
244
245/*
246 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
247 */
248#define VLKTIMEOUT (hz / 20 + 1)
249
250#ifdef _KERNEL
251
252#ifdef MALLOC_DECLARE
253MALLOC_DECLARE(M_VNODE);
254#endif
255
256/*
257 * Convert between vnode types and inode formats (since POSIX.1
258 * defines mode word of stat structure in terms of inode formats).
259 */
260extern enum vtype iftovt_tab[];
261extern int vttoif_tab[];
262#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
263#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
264#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
265
266/*
267 * Flags to various vnode functions.
268 */
269#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
270#define FORCECLOSE 0x0002 /* vflush: force file closure */
271#define WRITECLOSE 0x0004 /* vflush: only close writable files */
272#define DOCLOSE 0x0008 /* vclean: close active files */
273#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
274#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
275
276#define VREF(vp) vref(vp)
277
278
279#ifdef DIAGNOSTIC
280#define VATTR_NULL(vap) vattr_null(vap)
281#else
282#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
283#endif /* DIAGNOSTIC */
284
285#define NULLVP ((struct vnode *)NULL)
286
287#define VNODEOP_SET(f) \
288 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
289 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
290
291/*
292 * Global vnode data.
293 */
294extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
295extern int desiredvnodes; /* number of vnodes desired */
296extern time_t syncdelay; /* max time to delay syncing data */
297extern time_t filedelay; /* time to delay syncing files */
298extern time_t dirdelay; /* time to delay syncing directories */
299extern time_t metadelay; /* time to delay syncing metadata */
300extern struct vm_zone *namei_zone;
301extern int prtactive; /* nonzero to call vprint() */
302extern struct vattr va_null; /* predefined null vattr structure */
303extern int vfs_ioopt;
304
305/*
306 * Macro/function to check for client cache inconsistency w.r.t. leasing.
307 */
308#define LEASE_READ 0x1 /* Check lease for readers */
309#define LEASE_WRITE 0x2 /* Check lease for modifiers */
310
311
b153f746 312extern void (*lease_updatetime) (int deltat);
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313
314#define VSHOULDFREE(vp) \
315 (!((vp)->v_flag & (VFREE|VDOOMED)) && \
316 !(vp)->v_holdcnt && !(vp)->v_usecount && \
317 (!(vp)->v_object || \
318 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
319
320#define VMIGHTFREE(vp) \
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321 (((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) == 0 && \
322 cache_leaf_test(vp) == 0 && (vp)->v_usecount == 0)
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323
324#define VSHOULDBUSY(vp) \
325 (((vp)->v_flag & VFREE) && \
326 ((vp)->v_holdcnt || (vp)->v_usecount))
327
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328#define VI_LOCK(vp) lwkt_gettoken(&(vp)->v_interlock)
329#define VI_UNLOCK(vp) lwkt_reltoken(&(vp)->v_interlock)
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330
331#endif /* _KERNEL */
332
333
334/*
335 * Mods for extensibility.
336 */
337
338/*
339 * Flags for vdesc_flags:
340 */
341#define VDESC_MAX_VPS 16
342/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
343#define VDESC_VP0_WILLRELE 0x0001
344#define VDESC_VP1_WILLRELE 0x0002
345#define VDESC_VP2_WILLRELE 0x0004
346#define VDESC_VP3_WILLRELE 0x0008
347#define VDESC_NOMAP_VPP 0x0100
348#define VDESC_VPP_WILLRELE 0x0200
349
350/*
351 * VDESC_NO_OFFSET is used to identify the end of the offset list
352 * and in places where no such field exists.
353 */
354#define VDESC_NO_OFFSET -1
355
356/*
357 * This structure describes the vnode operation taking place.
358 */
359struct vnodeop_desc {
360 int vdesc_offset; /* offset in vector--first for speed */
361 char *vdesc_name; /* a readable name for debugging */
362 int vdesc_flags; /* VDESC_* flags */
363
364 /*
365 * These ops are used by bypass routines to map and locate arguments.
366 * Creds and procs are not needed in bypass routines, but sometimes
367 * they are useful to (for example) transport layers.
368 * Nameidata is useful because it has a cred in it.
369 */
370 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
371 int vdesc_vpp_offset; /* return vpp location */
372 int vdesc_cred_offset; /* cred location, if any */
373 int vdesc_proc_offset; /* proc location, if any */
374 int vdesc_componentname_offset; /* if any */
375 /*
376 * Finally, we've got a list of private data (about each operation)
377 * for each transport layer. (Support to manage this list is not
378 * yet part of BSD.)
379 */
380 caddr_t *vdesc_transports;
381};
382
383#ifdef _KERNEL
384/*
385 * A list of all the operation descs.
386 */
387extern struct vnodeop_desc *vnodeop_descs[];
388
389/*
390 * Interlock for scanning list of vnodes attached to a mountpoint
391 */
8a8d5d85 392extern struct lwkt_token mntvnode_token;
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393
394/*
395 * This macro is very helpful in defining those offsets in the vdesc struct.
396 *
397 * This is stolen from X11R4. I ignored all the fancy stuff for
398 * Crays, so if you decide to port this to such a serious machine,
399 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
400 */
401#define VOPARG_OFFSET(p_type,field) \
402 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
403#define VOPARG_OFFSETOF(s_type,field) \
404 VOPARG_OFFSET(s_type*,field)
405#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
406 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
407
408
409/*
410 * This structure is used to configure the new vnodeops vector.
411 */
412struct vnodeopv_entry_desc {
413 struct vnodeop_desc *opve_op; /* which operation this is */
414 vop_t *opve_impl; /* code implementing this operation */
415};
416struct vnodeopv_desc {
417 /* ptr to the ptr to the vector where op should go */
418 vop_t ***opv_desc_vector_p;
419 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
420};
421
422/*
423 * A generic structure.
424 * This can be used by bypass routines to identify generic arguments.
425 */
426struct vop_generic_args {
427 struct vnodeop_desc *a_desc;
428 /* other random data follows, presumably */
429};
430
431
432#ifdef DEBUG_VFS_LOCKS
433/*
434 * Macros to aid in tracing VFS locking problems. Not totally
435 * reliable since if the process sleeps between changing the lock
436 * state and checking it with the assert, some other process could
437 * change the state. They are good enough for debugging a single
438 * filesystem using a single-threaded test. I find that 'cvs co src'
439 * is a pretty good test.
440 */
441
442/*
443 * [dfr] Kludge until I get around to fixing all the vfs locking.
444 */
445#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
446 || (vp)->v_tag == VT_MFS \
447 || (vp)->v_tag == VT_NFS \
448 || (vp)->v_tag == VT_LFS \
449 || (vp)->v_tag == VT_ISOFS \
450 || (vp)->v_tag == VT_MSDOSFS)
451
452#define ASSERT_VOP_LOCKED(vp, str) \
453do { \
454 struct vnode *_vp = (vp); \
455 \
456 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \
457 panic("%s: %p is not locked but should be", str, _vp); \
458} while (0)
459
460#define ASSERT_VOP_UNLOCKED(vp, str) \
461do { \
462 struct vnode *_vp = (vp); \
463 int lockstate; \
464 \
465 if (_vp && IS_LOCKING_VFS(_vp)) { \
dadab5e9 466 lockstate = VOP_ISLOCKED(_vp, curthread); \
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467 if (lockstate == LK_EXCLUSIVE) \
468 panic("%s: %p is locked but should not be", \
469 str, _vp); \
470 } \
471} while (0)
472
473#define ASSERT_VOP_ELOCKED(vp, str) \
474do { \
475 struct vnode *_vp = (vp); \
476 \
477 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 478 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
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479 panic("%s: %p is not exclusive locked but should be", \
480 str, _vp); \
481} while (0)
482
483#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
484do { \
485 struct vnode *_vp = (vp); \
486 \
487 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 488 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
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489 panic("%s: %p is not exclusive locked by another proc", \
490 str, _vp); \
491} while (0)
492
493#define ASSERT_VOP_SLOCKED(vp, str) \
494do { \
495 struct vnode *_vp = (vp); \
496 \
497 if (_vp && IS_LOCKING_VFS(_vp) && \
498 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
499 panic("%s: %p is not locked shared but should be", \
500 str, _vp); \
501} while (0)
502
503#else
504
505#define ASSERT_VOP_LOCKED(vp, str)
506#define ASSERT_VOP_UNLOCKED(vp, str)
507
508#endif
509
510/*
511 * VOCALL calls an op given an ops vector. We break it out because BSD's
512 * vclean changes the ops vector and then wants to call ops with the old
513 * vector.
514 */
515#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
516
517/*
518 * This call works for vnodes in the kernel.
519 */
520#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
521#define VDESC(OP) (& __CONCAT(OP,_desc))
522#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
523
524/*
525 * VMIO support inline
526 */
527
528extern int vmiodirenable;
529
530static __inline int
531vn_canvmio(struct vnode *vp)
532{
533 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
534 return(TRUE);
535 return(FALSE);
536}
537
538/*
539 * Finally, include the default set of vnode operations.
540 */
541#include "vnode_if.h"
542
543/*
544 * Public vnode manipulation functions.
545 */
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546struct file;
547struct mount;
548struct nameidata;
549struct ostat;
550struct proc;
dadab5e9 551struct thread;
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552struct stat;
553struct nstat;
554struct ucred;
555struct uio;
556struct vattr;
557struct vnode;
558struct vop_bwrite_args;
559
b153f746 560extern int (*lease_check_hook) (struct vop_lease_args *);
984263bc 561
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562void addalias (struct vnode *vp, dev_t nvp_rdev);
563void addaliasu (struct vnode *vp, udev_t nvp_rdev);
564int bdevvp (dev_t dev, struct vnode **vpp);
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565void cvtstat (struct stat *st, struct ostat *ost);
566void cvtnstat (struct stat *sb, struct nstat *nsb);
567int getnewvnode (enum vtagtype tag,
568 struct mount *mp, vop_t **vops, struct vnode **vpp);
569int lease_check (struct vop_lease_args *ap);
570int spec_vnoperate (struct vop_generic_args *);
571int speedup_syncer (void);
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572void vattr_null (struct vattr *vap);
573int vcount (struct vnode *vp);
574void vdrop (struct vnode *);
575int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
576void vfs_add_vnodeops (const void *);
577void vfs_rm_vnodeops (const void *);
578int vflush (struct mount *mp, int rootrefs, int flags);
579int vget (struct vnode *vp, int lockflag, struct thread *td);
580void vgone (struct vnode *vp);
581void vgonel (struct vnode *vp, struct thread *td);
582void vhold (struct vnode *);
583int vinvalbuf (struct vnode *vp, int save,
584 struct thread *td, int slpflag, int slptimeo);
585int vtruncbuf (struct vnode *vp, struct thread *td,
586 off_t length, int blksize);
587void vprint (char *label, struct vnode *vp);
588int vrecycle (struct vnode *vp, struct lwkt_token *inter_lkp,
589 struct thread *td);
590int vn_close (struct vnode *vp, int flags, struct thread *td);
591int vn_isdisk (struct vnode *vp, int *errp);
592int vn_lock (struct vnode *vp, int flags, struct thread *td);
984263bc 593#ifdef DEBUG_LOCKS
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594int debug_vn_lock (struct vnode *vp, int flags, struct thread *td,
595 const char *filename, int line);
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596#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
597#endif
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598int vn_open (struct nameidata *ndp, int fmode, int cmode);
599void vn_pollevent (struct vnode *vp, int events);
600void vn_pollgone (struct vnode *vp);
601int vn_pollrecord (struct vnode *vp, struct thread *td, int events);
602int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 603 int len, off_t offset, enum uio_seg segflg, int ioflg,
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604 struct ucred *cred, int *aresid, struct thread *td);
605int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 606 int len, off_t offset, enum uio_seg segflg, int ioflg,
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607 struct ucred *cred, int *aresid, struct thread *td);
608int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td);
609dev_t vn_todev (struct vnode *vp);
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610int vfs_object_create (struct vnode *vp, struct thread *td);
611void vfs_timestamp (struct timespec *);
612int vn_writechk (struct vnode *vp);
613int vop_stdbwrite (struct vop_bwrite_args *ap);
614int vop_stdislocked (struct vop_islocked_args *);
615int vop_stdlock (struct vop_lock_args *);
616int vop_stdunlock (struct vop_unlock_args *);
617int vop_noislocked (struct vop_islocked_args *);
618int vop_nolock (struct vop_lock_args *);
619int vop_nopoll (struct vop_poll_args *);
620int vop_nounlock (struct vop_unlock_args *);
621int vop_stdpathconf (struct vop_pathconf_args *);
622int vop_stdpoll (struct vop_poll_args *);
623int vop_revoke (struct vop_revoke_args *);
624int vop_sharedlock (struct vop_lock_args *);
625int vop_eopnotsupp (struct vop_generic_args *ap);
626int vop_ebadf (struct vop_generic_args *ap);
627int vop_einval (struct vop_generic_args *ap);
628int vop_enotty (struct vop_generic_args *ap);
629int vop_defaultop (struct vop_generic_args *ap);
630int vop_null (struct vop_generic_args *ap);
631int vop_panic (struct vop_generic_args *ap);
632int vop_stdcreatevobject (struct vop_createvobject_args *ap);
633int vop_stddestroyvobject (struct vop_destroyvobject_args *ap);
634int vop_stdgetvobject (struct vop_getvobject_args *ap);
635
636void vfree (struct vnode *vp);
637void vput (struct vnode *vp);
638void vrele (struct vnode *vp);
639void vref (struct vnode *vp);
640void vbusy (struct vnode *vp);
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641
642extern vop_t **default_vnodeop_p;
643extern vop_t **spec_vnodeop_p;
644
645#endif /* _KERNEL */
646
647#endif /* !_SYS_VNODE_H_ */