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
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14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
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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 1.31 2005/02/15 08:32:18 joerg Exp $
41 #include <sys/queue.h>
43 #include <sys/select.h>
46 #include <sys/namecache.h>
47 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
48 #include <sys/thread.h>
50 #include <sys/vfsops.h>
51 #include <sys/vfscache.h>
53 #include <machine/lock.h>
56 * The vnode is the focus of all file activity in UNIX. There is a
57 * unique vnode allocated for each active file, each current directory,
58 * each mounted-on file, text file, and the root.
62 * Each underlying filesystem allocates its own private area and hangs
63 * it from v_data. If non-null, this area is freed in getnewvnode().
65 TAILQ_HEAD(buflists, buf);
68 * Range locks protect offset ranges in files and directories at a high
69 * level, allowing the actual I/O to be broken down into smaller pieces.
70 * Range locks will eventually be integrated into the clustered cache
71 * coherency infrastructure.
73 * We use a simple data structure for now, but eventually this should
74 * probably be a btree or red-black tree.
78 TAILQ_HEAD(vrangelock_list, vrangelock);
81 struct vrangelock_list vh_list;
85 TAILQ_ENTRY(vrangelock) vr_node;
91 #define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */
92 #define RNGL_CHECK 0x0002 /* check for work on unlock */
93 #define RNGL_SHARED 0x0004 /* shared lock, else exclusive */
94 #define RNGL_ONLIST 0x0008 /* sanity check */
98 vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length)
100 vr->vr_flags = flags;
101 vr->vr_offset = offset;
102 vr->vr_length = length;
107 void vrange_lock(struct vnode *vp, struct vrangelock *vr);
108 void vrange_unlock(struct vnode *vp, struct vrangelock *vr);
112 vrange_lock_shared(struct vnode *vp, struct vrangelock *vr,
113 off_t offset, off_t length)
115 vrange_init(vr, RNGL_SHARED, offset, length);
121 vrange_lock_excl(struct vnode *vp, struct vrangelock *vr,
122 off_t offset, off_t length)
124 vrange_init(vr, 0, offset, length);
131 * The vnode infrastructure is being reorgranized. Most reference-related
132 * fields are locked by the BGL, and most file I/O related operations and
133 * vnode teardown functions are locked by the vnode lock.
135 * File read operations require a shared lock, file write operations require
136 * an exclusive lock. Most directory operations (read or write) currently
137 * require an exclusive lock due to the side effects stored in the directory
138 * inode (which we intend to fix).
140 * File reads and writes are further protected by a range lock. The intention
141 * is to be able to break I/O operations down into more easily managed pieces
142 * so vm_page arrays can be passed through rather then UIOs. This work will
143 * occur in multiple stages. The range locks will also eventually be used to
144 * deal with clustered cache coherency issues and, more immediately, to
145 * protect operations associated with the kernel-managed journaling module.
147 * NOTE: XXX v_opencount currently only used by specfs. It should be used
150 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
151 * typically points to &v_mount->mnt_vn_use_ops. We use a double
152 * pointer because mnt_vn_use_ops may change dynamically when e.g.
153 * journaling is turned on or off.
156 u_long v_flag; /* vnode flags (see below) */
157 int v_usecount; /* reference count of users */
158 int v_writecount; /* reference count of writers */
159 int v_holdcnt; /* page & buffer references */
160 int v_opencount; /* number of explicit opens */
161 u_long v_id; /* capability identifier */
162 struct mount *v_mount; /* ptr to vfs we are in */
163 struct vop_ops **v_ops; /* vnode operations vector */
164 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
165 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
166 struct buflists v_cleanblkhd; /* clean blocklist head */
167 struct buflists v_dirtyblkhd; /* dirty blocklist head */
168 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
169 long v_numoutput; /* num of writes in progress */
170 enum vtype v_type; /* vnode type */
172 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
173 struct socket *vu_socket; /* unix ipc (VSOCK) */
175 udev_t vu_udev; /* device number for attach */
176 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
177 SLIST_ENTRY(vnode) vu_specnext;
179 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
181 struct nqlease *v_lease; /* Soft reference to lease */
182 daddr_t v_lastw; /* last write (write cluster) */
183 daddr_t v_cstart; /* start block of cluster */
184 daddr_t v_lasta; /* last allocation */
185 int v_clen; /* length of current cluster */
186 struct vm_object *v_object; /* Place to store VM object */
187 struct lock v_lock; /* file/dir ops lock */
188 enum vtagtype v_tag; /* type of underlying data */
189 void *v_data; /* private data for fs */
190 struct namecache_list v_namecache; /* associated nc entries */
192 struct lwkt_token vpi_token; /* lock to protect below */
193 struct selinfo vpi_selinfo; /* identity of poller(s) */
194 short vpi_events; /* what they are looking for */
195 short vpi_revents; /* what has happened */
197 struct vmresident *v_resident; /* optional vmresident */
198 struct vrangehead v_range; /* range lock */
200 const char *filename; /* Source file doing locking */
201 int line; /* Line number doing locking */
205 #define v_mountedhere v_un.vu_mountedhere
206 #define v_socket v_un.vu_socket
207 #define v_udev v_un.vu_spec.vu_udev
208 #define v_rdev v_un.vu_spec.vu_specinfo
209 #define v_specnext v_un.vu_spec.vu_specnext
210 #define v_fifoinfo v_un.vu_fifoinfo
212 #define VN_POLLEVENT(vp, events) \
214 if ((vp)->v_pollinfo.vpi_events & (events)) \
215 vn_pollevent((vp), (events)); \
221 #define VROOT 0x00001 /* root of its file system */
222 #define VTEXT 0x00002 /* vnode is a pure text prototype */
223 #define VSYSTEM 0x00004 /* vnode being used by kernel */
224 #define VISTTY 0x00008 /* vnode represents a tty */
225 #define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */
226 #define VCKPT 0x00020 /* checkpoint-restored vnode */
227 /* open for business 0x00040 */
228 /* open for business 0x00080 */
229 /* open for business 0x00100 */
230 /* open for business 0x00200 */
231 #define VBWAIT 0x00400 /* waiting for output to complete */
232 /* open for business 0x00800 */
233 /* open for business 0x01000 */
234 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */
235 #define VINACTIVE 0x04000 /* The vnode is inactive */
236 #define VAGE 0x08000 /* Insert vnode at head of free list */
237 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */
238 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */
239 #define VRECLAIMED 0x40000 /* This vnode has been destroyed */
240 #define VFREE 0x80000 /* This vnode is on the freelist */
241 /* open for business 0x100000 */
242 #define VONWORKLST 0x200000 /* On syncer work-list */
243 #define VMOUNT 0x400000 /* Mount in progress */
244 #define VOBJDIRTY 0x800000 /* object might be dirty */
245 #define VPLACEMARKER 0x1000000 /* dummy vnode placemarker */
248 * vmntvnodescan() flags
253 #define VMSC_NOWAIT 0x10
256 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
257 * help with write clustering)
259 #define IO_UNIT 0x0001 /* do I/O as atomic unit */
260 #define IO_APPEND 0x0002 /* append write to end */
261 #define IO_SYNC 0x0004 /* do I/O synchronously */
262 #define IO_NODELOCKED 0x0008 /* underlying node already locked */
263 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
264 #define IO_VMIO 0x0020 /* data already in VMIO space */
265 #define IO_INVAL 0x0040 /* invalidate after I/O */
266 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
267 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
268 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
269 #define IO_CORE 0x0400 /* I/O is part of core dump */
271 #define IO_SEQMAX 0x7F /* seq heuristic max value */
272 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
275 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
276 * and SVTX flag bits.
278 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls.
280 #define VDELETE 040000 /* delete if the file/dir exists */
281 #define VCREATE 020000 /* create if the file/dir does not exist */
282 #define VEXCL 010000 /* error if the file/dir already exists */
284 #define VSUID 04000 /* set user id on execution */
285 #define VSGID 02000 /* set group id on execution */
286 #define VSVTX 01000 /* save swapped text even after use */
287 #define VREAD 00400 /* read, write, execute permissions */
292 * Token indicating no attribute value yet assigned.
297 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
299 #define VLKTIMEOUT (hz / 20 + 1)
304 * Convert between vnode types and inode formats (since POSIX.1
305 * defines mode word of stat structure in terms of inode formats).
307 extern enum vtype iftovt_tab[];
308 extern int vttoif_tab[];
309 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
310 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
311 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
314 * Flags to various vnode functions.
316 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
317 #define FORCECLOSE 0x0002 /* vflush: force file closure */
318 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
319 #define DOCLOSE 0x0008 /* vclean: close active files */
320 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
321 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
324 #define VATTR_NULL(vap) vattr_null(vap)
326 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
327 #endif /* DIAGNOSTIC */
329 #define NULLVP ((struct vnode *)NULL)
331 #define VNODEOP_SET(f) \
332 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops_sysinit, &f); \
333 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_rm_vnodeops_sysinit, &f);
338 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
339 extern struct namecache *rootncp; /* root (i.e. "/") namecache */
340 extern int desiredvnodes; /* number of vnodes desired */
341 extern time_t syncdelay; /* max time to delay syncing data */
342 extern time_t filedelay; /* time to delay syncing files */
343 extern time_t dirdelay; /* time to delay syncing directories */
344 extern time_t metadelay; /* time to delay syncing metadata */
345 extern struct vm_zone *namei_zone;
346 extern int prtactive; /* nonzero to call vprint() */
347 extern struct vattr va_null; /* predefined null vattr structure */
348 extern int vfs_ioopt;
349 extern int numvnodes;
350 extern int freevnodes;
351 extern int vfs_fastdev; /* fast specfs device access */
354 * Macro/function to check for client cache inconsistency w.r.t. leasing.
356 #define LEASE_READ 0x1 /* Check lease for readers */
357 #define LEASE_WRITE 0x2 /* Check lease for modifiers */
360 extern void (*lease_updatetime) (int deltat);
365 * Mods for extensibility.
369 * Flags for vdesc_flags:
371 #define VDESC_MAX_VPS 8
372 /* Low order 8 flag bits are reserved for willrele flags for vp arguments. */
373 #define VDESC_VP0_WILLRELE 0x00000001
374 #define VDESC_VP1_WILLRELE 0x00000002
375 #define VDESC_VP2_WILLRELE 0x00000004
376 #define VDESC_VP3_WILLRELE 0x00000008
377 #define VDESC_VP4_WILLRELE 0x00000010
378 #define VDESC_VP5_WILLRELE 0x00000020
379 #define VDESC_VP6_WILLRELE 0x00000040
380 #define VDESC_VP7_WILLRELE 0x00000080
381 #define VDESC_NOMAP_VPP 0x00000100
382 #define VDESC_VPP_WILLRELE 0x00000200
383 #define VDESC_VP0_WILLUNLOCK 0x00010000
384 #define VDESC_VP1_WILLUNLOCK 0x00020000
385 #define VDESC_VP2_WILLUNLOCK 0x00040000
386 #define VDESC_VP3_WILLUNLOCK 0x00080000
387 #define VDESC_VP4_WILLUNLOCK 0x00100000
388 #define VDESC_VP5_WILLUNLOCK 0x00200000
389 #define VDESC_VP6_WILLUNLOCK 0x00400000
390 #define VDESC_VP7_WILLUNLOCK 0x00800000
393 * VDESC_NO_OFFSET is used to identify the end of the offset list
394 * and in places where no such field exists.
396 #define VDESC_NO_OFFSET -1
399 * This structure describes the vnode operation taking place.
401 struct vnodeop_desc {
402 int vdesc_offset; /* offset in vector--first for speed */
403 char *vdesc_name; /* a readable name for debugging */
404 int vdesc_flags; /* VDESC_* flags */
407 * These ops are used by bypass routines to map and locate arguments.
408 * Creds and procs are not needed in bypass routines, but sometimes
409 * they are useful to (for example) transport layers.
410 * Nameidata is useful because it has a cred in it.
412 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
413 int vdesc_vpp_offset; /* return vpp location */
414 int vdesc_cred_offset; /* cred location, if any */
415 int vdesc_proc_offset; /* proc location, if any */
416 int vdesc_componentname_offset; /* if any */
421 * A list of all the operation descs.
423 extern struct vnodeop_desc *vnodeop_descs[];
426 * Interlock for scanning list of vnodes attached to a mountpoint
428 extern struct lwkt_token mntvnode_token;
431 * This macro is very helpful in defining those offsets in the vdesc struct.
433 * This is stolen from X11R4. I ignored all the fancy stuff for
434 * Crays, so if you decide to port this to such a serious machine,
435 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
437 #define VOPARG_OFFSET(p_type,field) \
438 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
439 #define VOPARG_OFFSETOF(s_type,field) \
440 VOPARG_OFFSET(s_type*,field)
441 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
442 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
444 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
447 * This structure is used to configure the new vnodeops vector. The entry
448 * descriptor describes a patricular VOP function while the operations
449 * vector descriptor recursively describes arrays of entry descriptors.
451 struct vnodeopv_entry_desc {
452 struct vnodeop_desc *opve_op;
453 vnodeopv_entry_t opve_func;
456 struct vnodeopv_desc {
457 struct vop_ops **opv_desc_vector; /* vect to allocate/fill*/
458 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
461 struct vnodeopv_node {
462 TAILQ_ENTRY(vnodeopv_node) entry;
463 struct vop_ops *ops; /* allocated vector */
464 struct vnodeopv_entry_desc *descs; /* null terminated list */
467 #ifdef DEBUG_VFS_LOCKS
469 * Macros to aid in tracing VFS locking problems. Not totally
470 * reliable since if the process sleeps between changing the lock
471 * state and checking it with the assert, some other process could
472 * change the state. They are good enough for debugging a single
473 * filesystem using a single-threaded test. I find that 'cvs co src'
474 * is a pretty good test.
478 * [dfr] Kludge until I get around to fixing all the vfs locking.
480 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
481 || (vp)->v_tag == VT_MFS \
482 || (vp)->v_tag == VT_NFS \
483 || (vp)->v_tag == VT_LFS \
484 || (vp)->v_tag == VT_ISOFS \
485 || (vp)->v_tag == VT_MSDOSFS)
487 #define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str)
488 #define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str);
490 #define ASSERT_VOP_ELOCKED(vp, str) \
492 struct vnode *_vp = (vp); \
494 if (_vp && IS_LOCKING_VFS(_vp) && \
495 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
496 panic("%s: %p is not exclusive locked but should be", \
500 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
502 struct vnode *_vp = (vp); \
504 if (_vp && IS_LOCKING_VFS(_vp) && \
505 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
506 panic("%s: %p is not exclusive locked by another proc", \
510 #define ASSERT_VOP_SLOCKED(vp, str) \
512 struct vnode *_vp = (vp); \
514 if (_vp && IS_LOCKING_VFS(_vp) && \
515 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
516 panic("%s: %p is not locked shared but should be", \
520 void assert_vop_locked(struct vnode *vp, const char *str);
521 void assert_vop_unlocked(struct vnode *vp, const char *str);
525 #define ASSERT_VOP_LOCKED(vp, str)
526 #define ASSERT_VOP_UNLOCKED(vp, str)
528 #endif /* DEBUG_VFS_LOCKS */
531 * VOCALL calls an op given an ops vector. We break it out because BSD's
532 * vclean changes the ops vector and then wants to call ops with the old
536 typedef int (*vocall_func_t)(struct vop_generic_args *);
539 * This call executes the vops vector for the offset stored in the ap's
540 * descriptor of the passed vops rather then the one related to the
541 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
542 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
545 #define VOCALL(vops, ap) \
546 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->vdesc_offset)))(ap)
548 #define VDESC(OP) (& __CONCAT(OP,_desc))
549 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
552 * VMIO support inline
555 extern int vmiodirenable;
558 vn_canvmio(struct vnode *vp)
560 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
566 * Public vnode manipulation functions.
580 struct vop_bwrite_args;
582 extern int (*lease_check_hook) (struct vop_lease_args *);
584 void addaliasu (struct vnode *vp, udev_t nvp_udev);
585 int v_associate_rdev(struct vnode *vp, dev_t dev);
586 void v_release_rdev(struct vnode *vp);
587 int bdevvp (dev_t dev, struct vnode **vpp);
588 void cvtstat (struct stat *st, struct ostat *ost);
589 void cvtnstat (struct stat *sb, struct nstat *nsb);
590 struct vnode *allocvnode(int lktimeout, int lkflags);
591 struct vnode *allocvnode_placemarker(void);
592 void freevnode_placemarker(struct vnode *);
593 int getnewvnode (enum vtagtype tag, struct mount *mp,
594 struct vnode **vpp, int timo, int lkflags);
595 int getspecialvnode (enum vtagtype tag, struct mount *mp,
596 struct vop_ops **ops, struct vnode **vpp, int timo,
598 int lease_check (struct vop_lease_args *ap);
599 int spec_vnoperate (struct vop_generic_args *);
600 int speedup_syncer (void);
601 void vattr_null (struct vattr *vap);
602 int vcount (struct vnode *vp);
603 int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
604 void vfs_add_vnodeops_sysinit (const void *);
605 void vfs_rm_vnodeops_sysinit (const void *);
606 void vfs_add_vnodeops(struct mount *, struct vop_ops **,
607 struct vnodeopv_entry_desc *);
608 void vfs_rm_vnodeops(struct vop_ops **);
609 int vflush (struct mount *mp, int rootrefs, int flags);
610 int vmntvnodescan(struct mount *mp, int flags,
611 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
612 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
614 void insmntque(struct vnode *vp, struct mount *mp);
616 void vclean (struct vnode *vp, int flags, struct thread *td);
617 void vgone (struct vnode *vp);
618 int vinvalbuf (struct vnode *vp, int save,
619 struct thread *td, int slpflag, int slptimeo);
620 int vtruncbuf (struct vnode *vp, struct thread *td,
621 off_t length, int blksize);
622 void vprint (char *label, struct vnode *vp);
623 int vrecycle (struct vnode *vp, struct thread *td);
624 int vn_close (struct vnode *vp, int flags, struct thread *td);
625 int vn_isdisk (struct vnode *vp, int *errp);
626 int vn_lock (struct vnode *vp, int flags, struct thread *td);
628 int debug_vn_lock (struct vnode *vp, int flags, struct thread *td,
629 const char *filename, int line);
630 #define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
633 void vn_setspecops (struct file *fp);
634 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
635 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
636 void vn_pollevent (struct vnode *vp, int events);
637 void vn_pollgone (struct vnode *vp);
638 int vn_pollrecord (struct vnode *vp, struct thread *td, int events);
639 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
640 int len, off_t offset, enum uio_seg segflg, int ioflg,
641 struct ucred *cred, int *aresid, struct thread *td);
642 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
643 int len, off_t offset, enum uio_seg segflg, int ioflg,
644 struct ucred *cred, int *aresid, struct thread *td);
645 int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td);
646 dev_t vn_todev (struct vnode *vp);
647 int vfs_object_create (struct vnode *vp, struct thread *td);
648 void vfs_timestamp (struct timespec *);
649 int vn_writechk (struct vnode *vp);
650 int vop_stdbwrite (struct vop_bwrite_args *ap);
651 int vop_stdislocked (struct vop_islocked_args *ap);
652 int vop_stdlock (struct vop_lock_args *ap);
653 int vop_stdrlock (struct vop_lock_args *ap);
654 int vop_stdunlock (struct vop_unlock_args *ap);
655 int vop_nopoll (struct vop_poll_args *ap);
656 int vop_stdpathconf (struct vop_pathconf_args *ap);
657 int vop_stdpoll (struct vop_poll_args *ap);
658 int vop_stdrevoke (struct vop_revoke_args *ap);
659 int vop_eopnotsupp (struct vop_generic_args *ap);
660 int vop_ebadf (struct vop_generic_args *ap);
661 int vop_einval (struct vop_generic_args *ap);
662 int vop_enotty (struct vop_generic_args *ap);
663 int vop_defaultop (struct vop_generic_args *ap);
664 int vop_null (struct vop_generic_args *ap);
665 int vop_panic (struct vop_generic_args *ap);
666 int vop_stdcreatevobject (struct vop_createvobject_args *ap);
667 int vop_stddestroyvobject (struct vop_destroyvobject_args *ap);
668 int vop_stdgetvobject (struct vop_getvobject_args *ap);
670 int vop_compat_nresolve(struct vop_nresolve_args *ap);
671 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
672 int vop_compat_ncreate(struct vop_ncreate_args *ap);
673 int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
674 int vop_compat_nmknod(struct vop_nmknod_args *ap);
675 int vop_compat_nlink(struct vop_nlink_args *ap);
676 int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
677 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
678 int vop_compat_nremove(struct vop_nremove_args *ap);
679 int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
680 int vop_compat_nrename(struct vop_nrename_args *ap);
682 int vx_lock (struct vnode *vp);
683 void vx_unlock (struct vnode *vp);
684 int vx_get (struct vnode *vp);
685 int vx_get_nonblock (struct vnode *vp);
686 void vx_put (struct vnode *vp);
687 int vget (struct vnode *vp, int lockflag, struct thread *td);
688 void vput (struct vnode *vp);
689 void vhold (struct vnode *);
690 void vdrop (struct vnode *);
691 void vref (struct vnode *vp);
692 void vrele (struct vnode *vp);
693 void vsetflags (struct vnode *vp, int flags);
694 void vclrflags (struct vnode *vp, int flags);
696 void vfs_subr_init(void);
697 void vfs_mount_init(void);
698 void vfs_lock_init(void);
699 void vfs_sync_init(void);
701 void vn_syncer_add_to_worklist(struct vnode *, int);
702 void vnlru_proc_wait(void);
704 extern struct vop_ops *default_vnode_vops;
705 extern struct vop_ops *spec_vnode_vops;
706 extern struct vop_ops *dead_vnode_vops;
710 #endif /* !_SYS_VNODE_H_ */