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
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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
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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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 1.53 2006/05/12 22:26:47 dillon Exp $
41 #include <sys/queue.h>
43 #include <sys/select.h>
44 #include <sys/biotrack.h>
47 #include <sys/namecache.h>
48 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
49 #include <sys/thread.h>
51 #include <sys/vfsops.h>
52 #include <sys/vfscache.h>
55 #include <machine/lock.h>
58 * The vnode is the focus of all file activity in UNIX. There is a
59 * unique vnode allocated for each active file, each current directory,
60 * each mounted-on file, text file, and the root.
64 * Each underlying filesystem allocates its own private area and hangs
65 * it from v_data. If non-null, this area is freed in getnewvnode().
67 TAILQ_HEAD(buflists, buf);
70 * Range locks protect offset ranges in files and directories at a high
71 * level, allowing the actual I/O to be broken down into smaller pieces.
72 * Range locks will eventually be integrated into the clustered cache
73 * coherency infrastructure.
75 * We use a simple data structure for now, but eventually this should
76 * probably be a btree or red-black tree.
80 TAILQ_HEAD(vrangelock_list, vrangelock);
83 struct vrangelock_list vh_list;
87 TAILQ_ENTRY(vrangelock) vr_node;
93 #define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */
94 #define RNGL_CHECK 0x0002 /* check for work on unlock */
95 #define RNGL_SHARED 0x0004 /* shared lock, else exclusive */
96 #define RNGL_ONLIST 0x0008 /* sanity check */
100 vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length)
102 vr->vr_flags = flags;
103 vr->vr_offset = offset;
104 vr->vr_length = length;
109 void vrange_lock(struct vnode *vp, struct vrangelock *vr);
110 void vrange_unlock(struct vnode *vp, struct vrangelock *vr);
114 vrange_lock_shared(struct vnode *vp, struct vrangelock *vr,
115 off_t offset, off_t length)
117 vrange_init(vr, RNGL_SHARED, offset, length);
123 vrange_lock_excl(struct vnode *vp, struct vrangelock *vr,
124 off_t offset, off_t length)
126 vrange_init(vr, 0, offset, length);
133 * The vnode infrastructure is being reorgranized. Most reference-related
134 * fields are locked by the BGL, and most file I/O related operations and
135 * vnode teardown functions are locked by the vnode lock.
137 * File read operations require a shared lock, file write operations require
138 * an exclusive lock. Most directory operations (read or write) currently
139 * require an exclusive lock due to the side effects stored in the directory
140 * inode (which we intend to fix).
142 * File reads and writes are further protected by a range lock. The intention
143 * is to be able to break I/O operations down into more easily managed pieces
144 * so vm_page arrays can be passed through rather then UIOs. This work will
145 * occur in multiple stages. The range locks will also eventually be used to
146 * deal with clustered cache coherency issues and, more immediately, to
147 * protect operations associated with the kernel-managed journaling module.
149 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
150 * typically points to &v_mount->mnt_vn_use_ops. We use a double
151 * pointer because mnt_vn_use_ops may change dynamically when e.g.
152 * journaling is turned on or off.
154 * NOTE: v_filesize is currently only applicable when a VM object is
155 * associated with the vnode. Otherwise it will be set to NOOFFSET.
157 RB_HEAD(buf_rb_tree, buf);
158 RB_HEAD(buf_rb_hash, buf);
161 int v_flag; /* vnode flags (see below) */
162 int v_usecount; /* reference count of users */
164 int v_holdcnt; /* page & buffer references */
165 int v_opencount; /* number of explicit opens */
166 struct bio_track v_track_read; /* track I/O's in progress */
167 struct bio_track v_track_write; /* track I/O's in progress */
168 u_long v_id; /* capability identifier */
169 struct mount *v_mount; /* ptr to vfs we are in */
170 struct vop_ops **v_ops; /* vnode operations vector */
171 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
172 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
173 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
174 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
175 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
176 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
177 enum vtype v_type; /* vnode type */
179 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
180 struct socket *vu_socket; /* unix ipc (VSOCK) */
182 udev_t vu_udev; /* device number for attach */
183 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
184 SLIST_ENTRY(vnode) vu_specnext;
186 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
188 off_t v_filesize; /* file EOF or NOOFFSET */
189 off_t v_lazyw; /* lazy write iterator */
190 off_t v_lastw; /* last write (write cluster) */
191 off_t v_cstart; /* start block of cluster */
192 off_t v_lasta; /* last allocation */
193 int v_clen; /* length of current cluster */
194 struct vm_object *v_object; /* Place to store VM object */
195 struct lock v_lock; /* file/dir ops lock */
196 enum vtagtype v_tag; /* type of underlying data */
197 void *v_data; /* private data for fs */
198 struct namecache_list v_namecache; /* associated nc entries */
200 struct lwkt_token vpi_token; /* lock to protect below */
201 struct selinfo vpi_selinfo; /* identity of poller(s) */
202 short vpi_events; /* what they are looking for */
203 short vpi_revents; /* what has happened */
205 struct vmresident *v_resident; /* optional vmresident */
206 struct vrangehead v_range; /* range lock */
208 const char *filename; /* Source file doing locking */
209 int line; /* Line number doing locking */
213 #define v_mountedhere v_un.vu_mountedhere
214 #define v_socket v_un.vu_socket
215 #define v_udev v_un.vu_spec.vu_udev
216 #define v_rdev v_un.vu_spec.vu_specinfo
217 #define v_specnext v_un.vu_spec.vu_specnext
218 #define v_fifoinfo v_un.vu_fifoinfo
220 #define VN_POLLEVENT(vp, events) \
222 if ((vp)->v_pollinfo.vpi_events & (events)) \
223 vn_pollevent((vp), (events)); \
229 #define VROOT 0x00001 /* root of its file system */
230 #define VTEXT 0x00002 /* vnode is a pure text prototype */
231 #define VSYSTEM 0x00004 /* vnode being used by kernel */
232 #define VISTTY 0x00008 /* vnode represents a tty */
233 #define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */
234 #define VCKPT 0x00020 /* checkpoint-restored vnode */
235 #define VFSMID 0x00040 /* request FSMID update */
236 /* open for business 0x00080 */
237 /* open for business 0x00100 */
238 /* open for business 0x00200 */
239 /* open for business 0x00400 */
240 /* open for business 0x00800 */
241 /* open for business 0x01000 */
242 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */
243 #define VINACTIVE 0x04000 /* The vnode is inactive */
244 #define VAGE 0x08000 /* Insert vnode at head of free list */
245 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */
246 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */
247 #define VRECLAIMED 0x40000 /* This vnode has been destroyed */
248 #define VFREE 0x80000 /* This vnode is on the freelist */
249 /* open for business 0x100000 */
250 #define VONWORKLST 0x200000 /* On syncer work-list */
251 #define VMOUNT 0x400000 /* Mount in progress */
252 #define VOBJDIRTY 0x800000 /* object might be dirty */
255 * vmntvnodescan() flags
260 #define VMSC_NOWAIT 0x10
263 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
264 * help with write clustering)
266 #define IO_UNIT 0x0001 /* do I/O as atomic unit */
267 #define IO_APPEND 0x0002 /* append write to end */
268 #define IO_SYNC 0x0004 /* do I/O synchronously */
269 #define IO_NODELOCKED 0x0008 /* underlying node already locked */
270 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
271 #define IO_VMIO 0x0020 /* data already in VMIO space */
272 #define IO_INVAL 0x0040 /* invalidate after I/O */
273 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
274 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
275 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
276 #define IO_CORE 0x0400 /* I/O is part of core dump */
278 #define IO_SEQMAX 0x7F /* seq heuristic max value */
279 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
282 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
283 * and SVTX flag bits.
285 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls.
287 #define VDELETE 040000 /* delete if the file/dir exists */
288 #define VCREATE 020000 /* create if the file/dir does not exist */
289 #define VEXCL 010000 /* error if the file/dir already exists */
291 #define VSUID 04000 /* set user id on execution */
292 #define VSGID 02000 /* set group id on execution */
293 #define VSVTX 01000 /* save swapped text even after use */
294 #define VREAD 00400 /* read, write, execute permissions */
299 * Token indicating no attribute value yet assigned.
304 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
306 #define VLKTIMEOUT (hz / 20 + 1)
311 * Convert between vnode types and inode formats (since POSIX.1
312 * defines mode word of stat structure in terms of inode formats).
314 extern enum vtype iftovt_tab[];
315 extern int vttoif_tab[];
316 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
317 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
318 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
321 * Flags to various vnode functions.
323 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
324 #define FORCECLOSE 0x0002 /* vflush: force file closure */
325 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
326 #define DOCLOSE 0x0008 /* vclean: close active files */
327 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
328 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
331 #define VATTR_NULL(vap) vattr_null(vap)
333 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
334 #endif /* DIAGNOSTIC */
336 #define NULLVP ((struct vnode *)NULL)
338 #define VNODEOP_SET(f) \
339 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops_sysinit, &f); \
340 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_rm_vnodeops_sysinit, &f);
345 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
346 extern struct namecache *rootncp; /* root (i.e. "/") namecache */
347 extern int desiredvnodes; /* number of vnodes desired */
348 extern time_t syncdelay; /* max time to delay syncing data */
349 extern time_t filedelay; /* time to delay syncing files */
350 extern time_t dirdelay; /* time to delay syncing directories */
351 extern time_t metadelay; /* time to delay syncing metadata */
352 extern struct vm_zone *namei_zone;
353 extern int prtactive; /* nonzero to call vprint() */
354 extern struct vattr va_null; /* predefined null vattr structure */
355 extern int vfs_ioopt;
356 extern int numvnodes;
357 extern int freevnodes;
358 extern int vfs_fastdev; /* fast specfs device access */
363 * Mods for extensibility.
367 * Flags for vdesc_flags:
369 #define VDESC_MAX_VPS 8
370 /* Low order 8 flag bits are reserved for willrele flags for vp arguments. */
371 #define VDESC_VP0_WILLRELE 0x00000001
372 #define VDESC_VP1_WILLRELE 0x00000002
373 #define VDESC_VP2_WILLRELE 0x00000004
374 #define VDESC_VP3_WILLRELE 0x00000008
375 #define VDESC_VP4_WILLRELE 0x00000010
376 #define VDESC_VP5_WILLRELE 0x00000020
377 #define VDESC_VP6_WILLRELE 0x00000040
378 #define VDESC_VP7_WILLRELE 0x00000080
379 #define VDESC_NOMAP_VPP 0x00000100
380 #define VDESC_VPP_WILLRELE 0x00000200
381 #define VDESC_VP0_WILLUNLOCK 0x00010000
382 #define VDESC_VP1_WILLUNLOCK 0x00020000
383 #define VDESC_VP2_WILLUNLOCK 0x00040000
384 #define VDESC_VP3_WILLUNLOCK 0x00080000
385 #define VDESC_VP4_WILLUNLOCK 0x00100000
386 #define VDESC_VP5_WILLUNLOCK 0x00200000
387 #define VDESC_VP6_WILLUNLOCK 0x00400000
388 #define VDESC_VP7_WILLUNLOCK 0x00800000
391 * VDESC_NO_OFFSET is used to identify the end of the offset list
392 * and in places where no such field exists.
394 #define VDESC_NO_OFFSET -1
397 * This structure describes the vnode operation taking place.
399 struct vnodeop_desc {
400 int vdesc_offset; /* offset in vector--first for speed */
401 char *vdesc_name; /* a readable name for debugging */
412 * A list of all the operation descs.
414 extern struct vnodeop_desc *vnodeop_descs[];
417 * Interlock for scanning list of vnodes attached to a mountpoint
419 extern struct lwkt_token mntvnode_token;
422 * This macro is very helpful in defining those offsets in the vdesc struct.
424 * This is stolen from X11R4. I ignored all the fancy stuff for
425 * Crays, so if you decide to port this to such a serious machine,
426 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
428 #define VOPARG_OFFSET(p_type,field) \
429 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
430 #define VOPARG_OFFSETOF(s_type,field) \
431 VOPARG_OFFSET(s_type*,field)
432 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
433 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
435 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
438 * This structure is used to configure the new vnodeops vector. The entry
439 * descriptor describes a patricular VOP function while the operations
440 * vector descriptor recursively describes arrays of entry descriptors.
442 struct vnodeopv_entry_desc {
443 struct vnodeop_desc *opve_op;
444 vnodeopv_entry_t opve_func;
447 struct vnodeopv_desc {
448 struct vop_ops **opv_desc_vector; /* vect to allocate/fill*/
449 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
453 struct vnodeopv_node {
454 TAILQ_ENTRY(vnodeopv_node) entry;
455 struct vop_ops *ops; /* allocated vector */
456 struct vnodeopv_entry_desc *descs; /* null terminated list */
459 #ifdef DEBUG_VFS_LOCKS
461 * Macros to aid in tracing VFS locking problems. Not totally
462 * reliable since if the process sleeps between changing the lock
463 * state and checking it with the assert, some other process could
464 * change the state. They are good enough for debugging a single
465 * filesystem using a single-threaded test. I find that 'cvs co src'
466 * is a pretty good test.
470 * [dfr] Kludge until I get around to fixing all the vfs locking.
472 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
473 || (vp)->v_tag == VT_MFS \
474 || (vp)->v_tag == VT_NFS \
475 || (vp)->v_tag == VT_LFS \
476 || (vp)->v_tag == VT_ISOFS \
477 || (vp)->v_tag == VT_MSDOSFS)
479 #define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str)
480 #define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str);
482 #define ASSERT_VOP_ELOCKED(vp, str) \
484 struct vnode *_vp = (vp); \
486 if (_vp && IS_LOCKING_VFS(_vp) && \
487 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
488 panic("%s: %p is not exclusive locked but should be", \
492 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
494 struct vnode *_vp = (vp); \
496 if (_vp && IS_LOCKING_VFS(_vp) && \
497 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
498 panic("%s: %p is not exclusive locked by another proc", \
502 #define ASSERT_VOP_SLOCKED(vp, str) \
504 struct vnode *_vp = (vp); \
506 if (_vp && IS_LOCKING_VFS(_vp) && \
507 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
508 panic("%s: %p is not locked shared but should be", \
512 void assert_vop_locked(struct vnode *vp, const char *str);
513 void assert_vop_unlocked(struct vnode *vp, const char *str);
517 #define ASSERT_VOP_LOCKED(vp, str)
518 #define ASSERT_VOP_UNLOCKED(vp, str)
520 #endif /* DEBUG_VFS_LOCKS */
523 * VOCALL calls an op given an ops vector. We break it out because BSD's
524 * vclean changes the ops vector and then wants to call ops with the old
528 typedef int (*vocall_func_t)(struct vop_generic_args *);
531 * This call executes the vops vector for the offset stored in the ap's
532 * descriptor of the passed vops rather then the one related to the
533 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
534 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
537 #define VOCALL(vops, ap) \
538 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->vdesc_offset)))(ap)
540 #define VDESC(OP) (& __CONCAT(OP,_desc))
543 * Public vnode manipulation functions.
556 void addaliasu (struct vnode *vp, udev_t nvp_udev);
557 int v_associate_rdev(struct vnode *vp, dev_t dev);
558 void v_release_rdev(struct vnode *vp);
559 int bdevvp (dev_t dev, struct vnode **vpp);
560 struct vnode *allocvnode(int lktimeout, int lkflags);
561 int getnewvnode (enum vtagtype tag, struct mount *mp,
562 struct vnode **vpp, int timo, int lkflags);
563 int getspecialvnode (enum vtagtype tag, struct mount *mp,
564 struct vop_ops **ops, struct vnode **vpp, int timo,
566 int spec_vnoperate (struct vop_generic_args *);
567 int speedup_syncer (void);
568 void vattr_null (struct vattr *vap);
569 int vcount (struct vnode *vp);
570 int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
571 void vfs_add_vnodeops_sysinit (const void *);
572 void vfs_rm_vnodeops_sysinit (const void *);
573 void vfs_add_vnodeops(struct mount *, struct vop_ops **,
574 struct vnodeopv_entry_desc *, int);
575 void vfs_rm_vnodeops(struct vop_ops **);
576 int vflush (struct mount *mp, int rootrefs, int flags);
577 int vmntvnodescan(struct mount *mp, int flags,
578 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
579 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
581 void insmntque(struct vnode *vp, struct mount *mp);
583 void vclean (struct vnode *vp, int flags);
584 void vgone (struct vnode *vp);
585 void vupdatefsmid (struct vnode *vp);
586 int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
587 int vtruncbuf (struct vnode *vp, off_t length, int blksize);
588 int vfsync(struct vnode *vp, int waitfor, int passes,
589 int (*checkdef)(struct buf *),
590 int (*waitoutput)(struct vnode *, struct thread *));
591 int vinitvmio(struct vnode *vp, off_t filesize);
592 void vprint (char *label, struct vnode *vp);
593 int vrecycle (struct vnode *vp);
594 void vn_strategy(struct vnode *vp, struct bio *bio);
595 int vn_close (struct vnode *vp, int flags);
596 int vn_isdisk (struct vnode *vp, int *errp);
597 int vn_lock (struct vnode *vp, int flags);
599 int debug_vn_lock (struct vnode *vp, int flags,
600 const char *filename, int line);
601 #define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
604 int vn_get_namelen(struct vnode *, int *);
605 void vn_setspecops (struct file *fp);
606 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
607 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
608 void vn_pollevent (struct vnode *vp, int events);
609 void vn_pollgone (struct vnode *vp);
610 int vn_pollrecord (struct vnode *vp, int events);
611 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
612 int len, off_t offset, enum uio_seg segflg, int ioflg,
613 struct ucred *cred, int *aresid);
614 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
615 int len, off_t offset, enum uio_seg segflg, int ioflg,
616 struct ucred *cred, int *aresid);
617 int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
618 dev_t vn_todev (struct vnode *vp);
619 void vfs_timestamp (struct timespec *);
620 int vn_writechk (struct vnode *vp);
621 int vop_stdopen (struct vop_open_args *ap);
622 int vop_stdclose (struct vop_close_args *ap);
623 int vop_stdislocked (struct vop_islocked_args *ap);
624 int vop_stdlock (struct vop_lock_args *ap);
625 int vop_stdrlock (struct vop_lock_args *ap);
626 int vop_stdunlock (struct vop_unlock_args *ap);
627 int vop_nopoll (struct vop_poll_args *ap);
628 int vop_stdpathconf (struct vop_pathconf_args *ap);
629 int vop_stdpoll (struct vop_poll_args *ap);
630 int vop_stdrevoke (struct vop_revoke_args *ap);
631 int vop_eopnotsupp (struct vop_generic_args *ap);
632 int vop_ebadf (struct vop_generic_args *ap);
633 int vop_einval (struct vop_generic_args *ap);
634 int vop_enotty (struct vop_generic_args *ap);
635 int vop_defaultop (struct vop_generic_args *ap);
636 int vop_null (struct vop_generic_args *ap);
637 int vop_panic (struct vop_generic_args *ap);
638 int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
641 int vop_compat_nresolve(struct vop_nresolve_args *ap);
642 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
643 int vop_compat_ncreate(struct vop_ncreate_args *ap);
644 int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
645 int vop_compat_nmknod(struct vop_nmknod_args *ap);
646 int vop_compat_nlink(struct vop_nlink_args *ap);
647 int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
648 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
649 int vop_compat_nremove(struct vop_nremove_args *ap);
650 int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
651 int vop_compat_nrename(struct vop_nrename_args *ap);
653 int vx_lock (struct vnode *vp);
654 void vx_unlock (struct vnode *vp);
655 int vx_get (struct vnode *vp);
656 int vx_get_nonblock (struct vnode *vp);
657 void vx_put (struct vnode *vp);
658 int vget (struct vnode *vp, int lockflag);
659 void vput (struct vnode *vp);
660 void vhold (struct vnode *);
661 void vdrop (struct vnode *);
662 void vref (struct vnode *vp);
663 void vrele (struct vnode *vp);
664 void vsetflags (struct vnode *vp, int flags);
665 void vclrflags (struct vnode *vp, int flags);
667 void vfs_subr_init(void);
668 void vfs_mount_init(void);
669 void vfs_lock_init(void);
670 void vfs_sync_init(void);
672 void vn_syncer_add_to_worklist(struct vnode *, int);
673 void vnlru_proc_wait(void);
675 extern struct vop_ops *default_vnode_vops;
676 extern struct vop_ops *spec_vnode_vops;
677 extern struct vop_ops *dead_vnode_vops;
681 #endif /* !_SYS_VNODE_H_ */