2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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 * $DragonFly: src/sys/sys/vnode.h,v 1.60 2006/06/10 20:00:17 dillon Exp $
41 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
44 #include <sys/queue.h>
49 #ifndef _SYS_SELINFO_H_
50 #include <sys/selinfo.h>
52 #ifndef _SYS_BIOTRACK_H_
53 #include <sys/biotrack.h>
61 #ifndef _SYS_NAMECACHE_H_
62 #include <sys/namecache.h>
64 #ifndef _SYS_THREAD_H_
65 #include <sys/thread.h>
67 #ifndef _SYS_VFSOPS_H_
68 #include <sys/vfsops.h>
70 #ifndef _SYS_VFSCACHE_H_
71 #include <sys/vfscache.h>
76 #ifndef _MACHINE_LOCK_H_
77 #include <machine/lock.h>
81 * The vnode is the focus of all file activity in UNIX. There is a
82 * unique vnode allocated for each active file, each current directory,
83 * each mounted-on file, text file, and the root.
87 * Each underlying filesystem allocates its own private area and hangs
88 * it from v_data. If non-null, this area is freed in getnewvnode().
90 TAILQ_HEAD(buflists, buf);
93 * Range locks protect offset ranges in files and directories at a high
94 * level, allowing the actual I/O to be broken down into smaller pieces.
95 * Range locks will eventually be integrated into the clustered cache
96 * coherency infrastructure.
98 * We use a simple data structure for now, but eventually this should
99 * probably be a btree or red-black tree.
103 TAILQ_HEAD(vrangelock_list, vrangelock);
106 struct vrangelock_list vh_list;
110 TAILQ_ENTRY(vrangelock) vr_node;
116 #define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */
117 #define RNGL_CHECK 0x0002 /* check for work on unlock */
118 #define RNGL_SHARED 0x0004 /* shared lock, else exclusive */
119 #define RNGL_ONLIST 0x0008 /* sanity check */
123 vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length)
125 vr->vr_flags = flags;
126 vr->vr_offset = offset;
127 vr->vr_length = length;
132 void vrange_lock(struct vnode *vp, struct vrangelock *vr);
133 void vrange_unlock(struct vnode *vp, struct vrangelock *vr);
137 vrange_lock_shared(struct vnode *vp, struct vrangelock *vr,
138 off_t offset, off_t length)
140 vrange_init(vr, RNGL_SHARED, offset, length);
146 vrange_lock_excl(struct vnode *vp, struct vrangelock *vr,
147 off_t offset, off_t length)
149 vrange_init(vr, 0, offset, length);
156 * The vnode infrastructure is being reorgranized. Most reference-related
157 * fields are locked by the BGL, and most file I/O related operations and
158 * vnode teardown functions are locked by the vnode lock.
160 * File read operations require a shared lock, file write operations require
161 * an exclusive lock. Most directory operations (read or write) currently
162 * require an exclusive lock due to the side effects stored in the directory
163 * inode (which we intend to fix).
165 * File reads and writes are further protected by a range lock. The intention
166 * is to be able to break I/O operations down into more easily managed pieces
167 * so vm_page arrays can be passed through rather then UIOs. This work will
168 * occur in multiple stages. The range locks will also eventually be used to
169 * deal with clustered cache coherency issues and, more immediately, to
170 * protect operations associated with the kernel-managed journaling module.
172 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
173 * typically points to &v_mount->mnt_vn_use_ops. We use a double
174 * pointer because mnt_vn_use_ops may change dynamically when e.g.
175 * journaling is turned on or off.
177 * NOTE: v_filesize is currently only applicable when a VM object is
178 * associated with the vnode. Otherwise it will be set to NOOFFSET.
180 RB_HEAD(buf_rb_tree, buf);
181 RB_HEAD(buf_rb_hash, buf);
184 int v_flag; /* vnode flags (see below) */
185 int v_usecount; /* reference count of users */
187 int v_holdcnt; /* page & buffer references */
188 int v_opencount; /* number of explicit opens */
189 struct bio_track v_track_read; /* track I/O's in progress */
190 struct bio_track v_track_write; /* track I/O's in progress */
191 struct mount *v_mount; /* ptr to vfs we are in */
192 struct vop_ops **v_ops; /* vnode operations vector */
193 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
194 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
195 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
196 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
197 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
198 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
199 enum vtype v_type; /* vnode type */
201 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
202 struct socket *vu_socket; /* unix ipc (VSOCK) */
204 udev_t vu_udev; /* device number for attach */
205 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
206 SLIST_ENTRY(vnode) vu_specnext;
208 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
210 off_t v_filesize; /* file EOF or NOOFFSET */
211 off_t v_lazyw; /* lazy write iterator */
212 off_t v_lastw; /* last write (write cluster) */
213 off_t v_cstart; /* start block of cluster */
214 off_t v_lasta; /* last allocation */
215 int v_clen; /* length of current cluster */
216 struct vm_object *v_object; /* Place to store VM object */
217 struct lock v_lock; /* file/dir ops lock */
218 enum vtagtype v_tag; /* type of underlying data */
219 void *v_data; /* private data for fs */
220 struct namecache_list v_namecache; /* associated nc entries */
222 struct lwkt_token vpi_token; /* lock to protect below */
223 struct selinfo vpi_selinfo; /* identity of poller(s) */
224 short vpi_events; /* what they are looking for */
225 short vpi_revents; /* what has happened */
227 struct vmresident *v_resident; /* optional vmresident */
228 struct vrangehead v_range; /* range lock */
230 const char *filename; /* Source file doing locking */
231 int line; /* Line number doing locking */
235 #define v_mountedhere v_un.vu_mountedhere
236 #define v_socket v_un.vu_socket
237 #define v_udev v_un.vu_spec.vu_udev
238 #define v_rdev v_un.vu_spec.vu_specinfo
239 #define v_specnext v_un.vu_spec.vu_specnext
240 #define v_fifoinfo v_un.vu_fifoinfo
241 #define v_spinlock v_lock.lk_spinlock
243 #define VN_POLLEVENT(vp, events) \
245 if ((vp)->v_pollinfo.vpi_events & (events)) \
246 vn_pollevent((vp), (events)); \
252 #define VROOT 0x00001 /* root of its file system */
253 #define VTEXT 0x00002 /* vnode is a pure text prototype */
254 #define VSYSTEM 0x00004 /* vnode being used by kernel */
255 #define VISTTY 0x00008 /* vnode represents a tty */
256 #define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */
257 #define VCKPT 0x00020 /* checkpoint-restored vnode */
258 #define VFSMID 0x00040 /* request FSMID update */
259 #define VMAYHAVELOCKS 0x00080 /* there may be posix or flock locks on vp */
260 /* open for business 0x00100 */
261 /* open for business 0x00200 */
262 /* open for business 0x00400 */
263 /* open for business 0x00800 */
264 /* open for business 0x01000 */
265 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */
266 #define VINACTIVE 0x04000 /* The vnode is inactive */
267 #define VAGE 0x08000 /* Insert vnode at head of free list */
268 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */
269 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */
270 #define VRECLAIMED 0x40000 /* This vnode has been destroyed */
271 #define VFREE 0x80000 /* This vnode is on the freelist */
272 /* open for business 0x100000 */
273 #define VONWORKLST 0x200000 /* On syncer work-list */
274 #define VMOUNT 0x400000 /* Mount in progress */
275 #define VOBJDIRTY 0x800000 /* object might be dirty */
278 * vmntvnodescan() flags
283 #define VMSC_NOWAIT 0x10
286 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
287 * help with write clustering)
289 #define IO_UNIT 0x0001 /* do I/O as atomic unit */
290 #define IO_APPEND 0x0002 /* append write to end */
291 #define IO_SYNC 0x0004 /* do I/O synchronously */
292 #define IO_NODELOCKED 0x0008 /* underlying node already locked */
293 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
294 #define IO_VMIO 0x0020 /* data already in VMIO space */
295 #define IO_INVAL 0x0040 /* invalidate after I/O */
296 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
297 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
298 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
299 #define IO_CORE 0x0400 /* I/O is part of core dump */
301 #define IO_SEQMAX 0x7F /* seq heuristic max value */
302 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
305 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
306 * and SVTX flag bits.
308 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls.
310 #define VDELETE 040000 /* delete if the file/dir exists */
311 #define VCREATE 020000 /* create if the file/dir does not exist */
312 #define VEXCL 010000 /* error if the file/dir already exists */
314 #define VSUID 04000 /* set user id on execution */
315 #define VSGID 02000 /* set group id on execution */
316 #define VSVTX 01000 /* save swapped text even after use */
317 #define VREAD 00400 /* read, write, execute permissions */
322 * Token indicating no attribute value yet assigned.
327 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
329 #define VLKTIMEOUT (hz / 20 + 1)
334 * Convert between vnode types and inode formats (since POSIX.1
335 * defines mode word of stat structure in terms of inode formats).
337 extern enum vtype iftovt_tab[];
338 extern int vttoif_tab[];
339 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
340 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
341 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
344 * Flags to various vnode functions.
346 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
347 #define FORCECLOSE 0x0002 /* vflush: force file closure */
348 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
349 #define DOCLOSE 0x0008 /* vclean: close active files */
350 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
351 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
354 #define VATTR_NULL(vap) vattr_null(vap)
356 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
357 #endif /* DIAGNOSTIC */
359 #define NULLVP ((struct vnode *)NULL)
361 #define VNODEOP_SET(f) \
362 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops_sysinit, &f); \
363 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_rm_vnodeops_sysinit, &f);
370 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
371 extern struct namecache *rootncp; /* root (i.e. "/") namecache */
372 extern int desiredvnodes; /* number of vnodes desired */
373 extern time_t syncdelay; /* max time to delay syncing data */
374 extern time_t filedelay; /* time to delay syncing files */
375 extern time_t dirdelay; /* time to delay syncing directories */
376 extern time_t metadelay; /* time to delay syncing metadata */
377 extern struct objcache *namei_oc;
378 extern int prtactive; /* nonzero to call vprint() */
379 extern struct vattr va_null; /* predefined null vattr structure */
380 extern int vfs_ioopt;
381 extern int numvnodes;
382 extern int freevnodes;
383 extern int vfs_fastdev; /* fast specfs device access */
388 * Mods for extensibility.
392 * Flags for vdesc_flags:
394 #define VDESC_MAX_VPS 8
395 /* Low order 8 flag bits are reserved for willrele flags for vp arguments. */
396 #define VDESC_VP0_WILLRELE 0x00000001
397 #define VDESC_VP1_WILLRELE 0x00000002
398 #define VDESC_VP2_WILLRELE 0x00000004
399 #define VDESC_VP3_WILLRELE 0x00000008
400 #define VDESC_VP4_WILLRELE 0x00000010
401 #define VDESC_VP5_WILLRELE 0x00000020
402 #define VDESC_VP6_WILLRELE 0x00000040
403 #define VDESC_VP7_WILLRELE 0x00000080
404 #define VDESC_NOMAP_VPP 0x00000100
405 #define VDESC_VPP_WILLRELE 0x00000200
406 #define VDESC_VP0_WILLUNLOCK 0x00010000
407 #define VDESC_VP1_WILLUNLOCK 0x00020000
408 #define VDESC_VP2_WILLUNLOCK 0x00040000
409 #define VDESC_VP3_WILLUNLOCK 0x00080000
410 #define VDESC_VP4_WILLUNLOCK 0x00100000
411 #define VDESC_VP5_WILLUNLOCK 0x00200000
412 #define VDESC_VP6_WILLUNLOCK 0x00400000
413 #define VDESC_VP7_WILLUNLOCK 0x00800000
416 * VDESC_NO_OFFSET is used to identify the end of the offset list
417 * and in places where no such field exists.
419 #define VDESC_NO_OFFSET -1
422 * This structure describes the vnode operation taking place.
424 struct vnodeop_desc {
425 int vdesc_offset; /* offset in vector--first for speed */
426 char *vdesc_name; /* a readable name for debugging */
437 * A list of all the operation descs.
439 extern struct vnodeop_desc *vnodeop_descs[];
442 * Interlock for scanning list of vnodes attached to a mountpoint
444 extern struct lwkt_token mntvnode_token;
447 * This macro is very helpful in defining those offsets in the vdesc struct.
449 * This is stolen from X11R4. I ignored all the fancy stuff for
450 * Crays, so if you decide to port this to such a serious machine,
451 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
453 #define VOPARG_OFFSET(p_type,field) \
454 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
455 #define VOPARG_OFFSETOF(s_type,field) \
456 VOPARG_OFFSET(s_type*,field)
457 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
458 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
460 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
463 * This structure is used to configure the new vnodeops vector. The entry
464 * descriptor describes a patricular VOP function while the operations
465 * vector descriptor recursively describes arrays of entry descriptors.
467 struct vnodeopv_entry_desc {
468 struct vnodeop_desc *opve_op;
469 vnodeopv_entry_t opve_func;
472 struct vnodeopv_desc {
473 struct vop_ops **opv_desc_vector; /* vect to allocate/fill*/
474 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
478 struct vnodeopv_node {
479 TAILQ_ENTRY(vnodeopv_node) entry;
480 struct vop_ops *ops; /* allocated vector */
481 struct vnodeopv_entry_desc *descs; /* null terminated list */
484 #ifdef DEBUG_VFS_LOCKS
486 * Macros to aid in tracing VFS locking problems. Not totally
487 * reliable since if the process sleeps between changing the lock
488 * state and checking it with the assert, some other process could
489 * change the state. They are good enough for debugging a single
490 * filesystem using a single-threaded test. I find that 'cvs co src'
491 * is a pretty good test.
494 #define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str)
495 #define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str);
497 void assert_vop_locked(struct vnode *vp, const char *str);
498 void assert_vop_unlocked(struct vnode *vp, const char *str);
502 #define ASSERT_VOP_LOCKED(vp, str)
503 #define ASSERT_VOP_UNLOCKED(vp, str)
505 #endif /* DEBUG_VFS_LOCKS */
508 * VOCALL calls an op given an ops vector. We break it out because BSD's
509 * vclean changes the ops vector and then wants to call ops with the old
513 typedef int (*vocall_func_t)(struct vop_generic_args *);
516 * This call executes the vops vector for the offset stored in the ap's
517 * descriptor of the passed vops rather then the one related to the
518 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
519 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
522 #define VOCALL(vops, ap) \
523 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->vdesc_offset)))(ap)
525 #define VDESC(OP) (& __CONCAT(OP,_desc))
528 * Public vnode manipulation functions.
541 void addaliasu (struct vnode *vp, udev_t nvp_udev);
542 int v_associate_rdev(struct vnode *vp, dev_t dev);
543 void v_release_rdev(struct vnode *vp);
544 int bdevvp (dev_t dev, struct vnode **vpp);
545 struct vnode *allocvnode(int lktimeout, int lkflags);
546 int getnewvnode (enum vtagtype tag, struct mount *mp,
547 struct vnode **vpp, int timo, int lkflags);
548 int getspecialvnode (enum vtagtype tag, struct mount *mp,
549 struct vop_ops **ops, struct vnode **vpp, int timo,
551 int spec_vnoperate (struct vop_generic_args *);
552 int speedup_syncer (void);
553 void vattr_null (struct vattr *vap);
554 int vcount (struct vnode *vp);
555 int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
556 void vfs_add_vnodeops_sysinit (const void *);
557 void vfs_rm_vnodeops_sysinit (const void *);
558 void vfs_add_vnodeops(struct mount *, struct vop_ops **,
559 struct vnodeopv_entry_desc *, int);
560 void vfs_rm_vnodeops(struct vop_ops **);
561 int vflush (struct mount *mp, int rootrefs, int flags);
562 int vmntvnodescan(struct mount *mp, int flags,
563 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
564 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
566 void insmntque(struct vnode *vp, struct mount *mp);
568 void vclean (struct vnode *vp, int flags);
569 void vgone (struct vnode *vp);
570 void vupdatefsmid (struct vnode *vp);
571 int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
572 int vtruncbuf (struct vnode *vp, off_t length, int blksize);
573 int vfsync(struct vnode *vp, int waitfor, int passes,
574 int (*checkdef)(struct buf *),
575 int (*waitoutput)(struct vnode *, struct thread *));
576 int vinitvmio(struct vnode *vp, off_t filesize);
577 void vprint (char *label, struct vnode *vp);
578 int vrecycle (struct vnode *vp);
579 void vn_strategy(struct vnode *vp, struct bio *bio);
580 int vn_close (struct vnode *vp, int flags);
581 int vn_isdisk (struct vnode *vp, int *errp);
582 int vn_lock (struct vnode *vp, int flags);
584 int debug_vn_lock (struct vnode *vp, int flags,
585 const char *filename, int line);
586 #define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
589 int vn_get_namelen(struct vnode *, int *);
590 void vn_setspecops (struct file *fp);
591 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
592 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
593 void vn_pollevent (struct vnode *vp, int events);
594 void vn_pollgone (struct vnode *vp);
595 int vn_pollrecord (struct vnode *vp, int events);
596 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
597 int len, off_t offset, enum uio_seg segflg, int ioflg,
598 struct ucred *cred, int *aresid);
599 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
600 int len, off_t offset, enum uio_seg segflg, int ioflg,
601 struct ucred *cred, int *aresid);
602 int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
603 dev_t vn_todev (struct vnode *vp);
604 void vfs_timestamp (struct timespec *);
605 int vn_writechk (struct vnode *vp);
606 int vop_stdopen (struct vop_open_args *ap);
607 int vop_stdclose (struct vop_close_args *ap);
608 int vop_stdislocked (struct vop_islocked_args *ap);
609 int vop_stdlock (struct vop_lock_args *ap);
610 int vop_stdrlock (struct vop_lock_args *ap);
611 int vop_stdunlock (struct vop_unlock_args *ap);
612 int vop_nopoll (struct vop_poll_args *ap);
613 int vop_stdpathconf (struct vop_pathconf_args *ap);
614 int vop_stdpoll (struct vop_poll_args *ap);
615 int vop_stdrevoke (struct vop_revoke_args *ap);
616 int vop_eopnotsupp (struct vop_generic_args *ap);
617 int vop_ebadf (struct vop_generic_args *ap);
618 int vop_einval (struct vop_generic_args *ap);
619 int vop_enotty (struct vop_generic_args *ap);
620 int vop_defaultop (struct vop_generic_args *ap);
621 int vop_null (struct vop_generic_args *ap);
622 int vop_panic (struct vop_generic_args *ap);
623 int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
626 int vop_compat_nresolve(struct vop_nresolve_args *ap);
627 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
628 int vop_compat_ncreate(struct vop_ncreate_args *ap);
629 int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
630 int vop_compat_nmknod(struct vop_nmknod_args *ap);
631 int vop_compat_nlink(struct vop_nlink_args *ap);
632 int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
633 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
634 int vop_compat_nremove(struct vop_nremove_args *ap);
635 int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
636 int vop_compat_nrename(struct vop_nrename_args *ap);
638 int vx_lock (struct vnode *vp);
639 void vx_unlock (struct vnode *vp);
640 int vx_get (struct vnode *vp);
641 int vx_get_nonblock (struct vnode *vp);
642 void vx_put (struct vnode *vp);
643 int vget (struct vnode *vp, int lockflag);
644 void vput (struct vnode *vp);
645 void vhold (struct vnode *);
646 void vdrop (struct vnode *);
647 void vref (struct vnode *vp);
648 void vrele (struct vnode *vp);
649 void vsetflags (struct vnode *vp, int flags);
650 void vclrflags (struct vnode *vp, int flags);
652 void vfs_subr_init(void);
653 void vfs_mount_init(void);
654 void vfs_lock_init(void);
655 void vfs_sync_init(void);
657 void vn_syncer_add_to_worklist(struct vnode *, int);
658 void vnlru_proc_wait(void);
660 extern struct vop_ops *default_vnode_vops;
661 extern struct vop_ops *spec_vnode_vops;
662 extern struct vop_ops *dead_vnode_vops;
666 #endif /* _KERNEL || _KERNEL_STRUCTURES */
667 #endif /* !_SYS_VNODE_H_ */