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
41 * XXX - compatability until lockmgr() goes away or all the #includes are
44 #include <sys/lockmgr.h>
46 #include <sys/queue.h>
47 #include <sys/_lock.h>
48 #include <sys/_mutex.h>
49 #include <sys/selinfo.h>
54 * The vnode is the focus of all file activity in UNIX. There is a
55 * unique vnode allocated for each active file, each current directory,
56 * each mounted-on file, text file, and the root.
60 * Vnode types. VNON means no type.
62 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
66 * These are for the benefit of external programs only (e.g., pstat)
67 * and should NEVER be inspected by the kernel.
70 VT_NON, VT_UFS, VT_NFS, VT_UNUSED, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
71 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
72 VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS,
73 VT_HPFS, VT_NWFS, VT_PSEUDOFS, VT_SMBFS
77 * Each underlying filesystem allocates its own private area and hangs
78 * it from v_data. If non-null, this area is freed in getnewvnode().
80 TAILQ_HEAD(buflists, buf);
82 typedef int vop_t __P((void *));
86 * Reading or writing any of these items requires holding the appropriate lock.
87 * v_freelist is locked by the global vnode_free_list mutex.
88 * v_mntvnodes is locked by the global mntvnodes mutex.
89 * v_flag, v_usecount, v_holdcount and v_writecount are
90 * locked by the v_interlock mutex.
91 * v_pollinfo is locked by the lock contained inside it.
94 u_long v_flag; /* vnode flags (see below) */
95 int v_usecount; /* reference count of users */
96 int v_writecount; /* reference count of writers */
97 int v_holdcnt; /* page & buffer references */
98 u_long v_id; /* capability identifier */
99 struct mount *v_mount; /* ptr to vfs we are in */
100 vop_t **v_op; /* vnode operations vector */
101 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
102 LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */
103 struct buflists v_cleanblkhd; /* clean blocklist head */
104 struct buflists v_dirtyblkhd; /* dirty blocklist head */
105 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
106 long v_numoutput; /* num of writes in progress */
107 enum vtype v_type; /* vnode type */
109 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
110 struct socket *vu_socket; /* unix ipc (VSOCK) */
112 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
113 SLIST_ENTRY(vnode) vu_specnext;
115 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
117 struct nqlease *v_lease; /* Soft reference to lease */
118 daddr_t v_lastw; /* last write (write cluster) */
119 daddr_t v_cstart; /* start block of cluster */
120 daddr_t v_lasta; /* last allocation */
121 int v_clen; /* length of current cluster */
122 struct vm_object *v_object; /* Place to store VM object */
123 struct mtx v_interlock; /* lock on usecount and flag */
124 struct lock v_lock; /* used if fs don't have one */
125 struct lock *v_vnlock; /* pointer to vnode lock */
126 enum vtagtype v_tag; /* type of underlying data */
127 void *v_data; /* private data for fs */
128 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */
129 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */
130 struct vnode *v_dd; /* .. vnode */
131 u_long v_ddid; /* .. capability identifier */
133 struct mtx vpi_lock; /* lock to protect below */
134 struct selinfo vpi_selinfo; /* identity of poller(s) */
135 short vpi_events; /* what they are looking for */
136 short vpi_revents; /* what has happened */
138 struct proc *v_vxproc; /* proc owning VXLOCK */
140 const char *filename; /* Source file doing locking */
141 int line; /* Line number doing locking */
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
150 #define VN_POLLEVENT(vp, events) \
152 if ((vp)->v_pollinfo.vpi_events & (events)) \
153 vn_pollevent((vp), (events)); \
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 #define VCOPYONWRITE 0x04000 /* vnode is doing copy-on-write */
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 /* open for business 0x100000 */
176 #define VONWORKLST 0x200000 /* On syncer work-list */
177 #define VMOUNT 0x400000 /* Mount in progress */
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).
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 */
206 * Flags for va_vaflags.
208 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
209 #define VA_EXCLUSIVE 0x02 /* exclusive create request */
212 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
213 * help with write clustering)
215 #define IO_UNIT 0x01 /* do I/O as atomic unit */
216 #define IO_APPEND 0x02 /* append write to end */
217 #define IO_SYNC 0x04 /* do I/O synchronously */
218 #define IO_NODELOCKED 0x08 /* underlying node already locked */
219 #define IO_NDELAY 0x10 /* FNDELAY flag set in file table */
220 #define IO_VMIO 0x20 /* data already in VMIO space */
221 #define IO_INVAL 0x40 /* invalidate after I/O */
222 #define IO_ASYNC 0x80 /* bawrite rather then bdwrite */
223 #define IO_DIRECT 0x100 /* attempt to bypass buffer cache */
226 * Modes. Some values same as Ixxx entries from inode.h for now.
228 #define VADMIN 010000 /* permission to administer vnode */
229 #define VSUID 004000 /* set user id on execution */
230 #define VSGID 002000 /* set group id on execution */
231 #define VSVTX 001000 /* save swapped text even after use */
232 #define VREAD 000400 /* read, write, execute permissions */
233 #define VWRITE 000200
237 * Token indicating no attribute value yet assigned.
243 #ifdef MALLOC_DECLARE
244 MALLOC_DECLARE(M_VNODE);
248 * Convert between vnode types and inode formats (since POSIX.1
249 * defines mode word of stat structure in terms of inode formats).
251 extern enum vtype iftovt_tab[];
252 extern int vttoif_tab[];
253 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
254 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
255 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
258 * Flags to various vnode functions.
260 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
261 #define FORCECLOSE 0x0002 /* vflush: force file closure */
262 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
263 #define DOCLOSE 0x0008 /* vclean: close active files */
264 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
265 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
266 #define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */
267 #define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */
268 #define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */
270 #define VREF(vp) vref(vp)
274 #define VATTR_NULL(vap) vattr_null(vap)
276 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
277 #endif /* DIAGNOSTIC */
279 #define NULLVP ((struct vnode *)NULL)
281 #define VNODEOP_SET(f) \
282 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
283 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
288 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
289 extern int desiredvnodes; /* number of vnodes desired */
290 extern time_t syncdelay; /* max time to delay syncing data */
291 extern time_t filedelay; /* time to delay syncing files */
292 extern time_t dirdelay; /* time to delay syncing directories */
293 extern time_t metadelay; /* time to delay syncing metadata */
294 extern struct vm_zone *namei_zone;
295 extern int prtactive; /* nonzero to call vprint() */
296 extern struct vattr va_null; /* predefined null vattr structure */
297 extern int vfs_ioopt;
300 * Macro/function to check for client cache inconsistency w.r.t. leasing.
302 #define LEASE_READ 0x1 /* Check lease for readers */
303 #define LEASE_WRITE 0x2 /* Check lease for modifiers */
306 extern void (*lease_updatetime) __P((int deltat));
308 #define VSHOULDFREE(vp) \
309 (!((vp)->v_flag & (VFREE|VDOOMED)) && \
310 !(vp)->v_holdcnt && !(vp)->v_usecount && \
311 (!(vp)->v_object || \
312 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
314 #define VSHOULDBUSY(vp) \
315 (((vp)->v_flag & VFREE) && \
316 ((vp)->v_holdcnt || (vp)->v_usecount))
318 #define VI_LOCK(vp) mtx_lock(&(vp)->v_interlock)
319 #define VI_TRYLOCK(vp) mtx_trylock(&(vp)->v_interlock)
320 #define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock)
326 * Mods for extensibility.
330 * Flags for vdesc_flags:
332 #define VDESC_MAX_VPS 16
333 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
334 #define VDESC_VP0_WILLRELE 0x0001
335 #define VDESC_VP1_WILLRELE 0x0002
336 #define VDESC_VP2_WILLRELE 0x0004
337 #define VDESC_VP3_WILLRELE 0x0008
338 #define VDESC_NOMAP_VPP 0x0100
339 #define VDESC_VPP_WILLRELE 0x0200
342 * VDESC_NO_OFFSET is used to identify the end of the offset list
343 * and in places where no such field exists.
345 #define VDESC_NO_OFFSET -1
348 * This structure describes the vnode operation taking place.
350 struct vnodeop_desc {
351 int vdesc_offset; /* offset in vector,first for speed */
352 char *vdesc_name; /* a readable name for debugging */
353 int vdesc_flags; /* VDESC_* flags */
356 * These ops are used by bypass routines to map and locate arguments.
357 * Creds and procs are not needed in bypass routines, but sometimes
358 * they are useful to (for example) transport layers.
359 * Nameidata is useful because it has a cred in it.
361 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
362 int vdesc_vpp_offset; /* return vpp location */
363 int vdesc_cred_offset; /* cred location, if any */
364 int vdesc_proc_offset; /* proc location, if any */
365 int vdesc_componentname_offset; /* if any */
367 * Finally, we've got a list of private data (about each operation)
368 * for each transport layer. (Support to manage this list is not
371 caddr_t *vdesc_transports;
376 * A list of all the operation descs.
378 extern struct vnodeop_desc *vnodeop_descs[];
381 * Interlock for scanning list of vnodes attached to a mountpoint
383 extern struct mtx mntvnode_mtx;
386 * This macro is very helpful in defining those offsets in the vdesc struct.
388 * This is stolen from X11R4. I ignored all the fancy stuff for
389 * Crays, so if you decide to port this to such a serious machine,
390 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
392 #define VOPARG_OFFSET(p_type,field) \
393 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
394 #define VOPARG_OFFSETOF(s_type,field) \
395 VOPARG_OFFSET(s_type*,field)
396 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
397 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
401 * This structure is used to configure the new vnodeops vector.
403 struct vnodeopv_entry_desc {
404 struct vnodeop_desc *opve_op; /* which operation this is */
405 vop_t *opve_impl; /* code implementing this operation */
407 struct vnodeopv_desc {
408 /* ptr to the ptr to the vector where op should go */
409 vop_t ***opv_desc_vector_p;
410 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
414 * A generic structure.
415 * This can be used by bypass routines to identify generic arguments.
417 struct vop_generic_args {
418 struct vnodeop_desc *a_desc;
419 /* other random data follows, presumably */
423 #ifdef DEBUG_VFS_LOCKS
425 * Macros to aid in tracing VFS locking problems. Not totally
426 * reliable since if the process sleeps between changing the lock
427 * state and checking it with the assert, some other process could
428 * change the state. They are good enough for debugging a single
429 * filesystem using a single-threaded test. I find that 'cvs co src'
430 * is a pretty good test.
434 * [dfr] Kludge until I get around to fixing all the vfs locking.
436 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
437 || (vp)->v_tag == VT_NFS \
438 || (vp)->v_tag == VT_LFS \
439 || (vp)->v_tag == VT_ISOFS \
440 || (vp)->v_tag == VT_MSDOSFS \
441 || (vp)->v_tag == VT_DEVFS)
443 #define ASSERT_VOP_LOCKED(vp, str) \
445 struct vnode *_vp = (vp); \
447 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \
448 panic("%s: %p is not locked but should be", str, _vp); \
451 #define ASSERT_VOP_UNLOCKED(vp, str) \
453 struct vnode *_vp = (vp); \
456 if (_vp && IS_LOCKING_VFS(_vp)) { \
457 lockstate = VOP_ISLOCKED(_vp, curproc); \
458 if (lockstate == LK_EXCLUSIVE) \
459 panic("%s: %p is locked but should not be", \
464 #define ASSERT_VOP_ELOCKED(vp, str) \
466 struct vnode *_vp = (vp); \
468 if (_vp && IS_LOCKING_VFS(_vp) && \
469 VOP_ISLOCKED(_vp, curproc) != LK_EXCLUSIVE) \
470 panic("%s: %p is not exclusive locked but should be", \
474 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
476 struct vnode *_vp = (vp); \
478 if (_vp && IS_LOCKING_VFS(_vp) && \
479 VOP_ISLOCKED(_vp, curproc) != LK_EXCLOTHER) \
480 panic("%s: %p is not exclusive locked by another proc", \
484 #define ASSERT_VOP_SLOCKED(vp, str) \
486 struct vnode *_vp = (vp); \
488 if (_vp && IS_LOCKING_VFS(_vp) && \
489 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
490 panic("%s: %p is not locked shared but should be", \
496 #define ASSERT_VOP_LOCKED(vp, str)
497 #define ASSERT_VOP_UNLOCKED(vp, str)
502 * VOCALL calls an op given an ops vector. We break it out because BSD's
503 * vclean changes the ops vector and then wants to call ops with the old
506 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
509 * This call works for vnodes in the kernel.
511 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
512 #define VDESC(OP) (& __CONCAT(OP,_desc))
513 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
516 * VMIO support inline
519 extern int vmiodirenable;
522 vn_canvmio(struct vnode *vp)
524 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
530 * Finally, include the default set of vnode operations.
532 #include "vnode_if.h"
535 * Public vnode manipulation functions.
537 struct componentname;
550 extern int (*lease_check_hook) __P((struct vop_lease_args *));
552 struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev));
553 int bdevvp __P((dev_t dev, struct vnode **vpp));
554 /* cache_* may belong in namei.h. */
555 void cache_enter __P((struct vnode *dvp, struct vnode *vp,
556 struct componentname *cnp));
557 int cache_lookup __P((struct vnode *dvp, struct vnode **vpp,
558 struct componentname *cnp));
559 void cache_purge __P((struct vnode *vp));
560 void cache_purgevfs __P((struct mount *mp));
561 void cache_purgeleafdirs __P((int ndir));
562 void cvtstat __P((struct stat *st, struct ostat *ost));
563 void cvtnstat __P((struct stat *sb, struct nstat *nsb));
564 int getnewvnode __P((enum vtagtype tag,
565 struct mount *mp, vop_t **vops, struct vnode **vpp));
566 int lease_check __P((struct vop_lease_args *ap));
567 int spec_vnoperate __P((struct vop_generic_args *));
568 int speedup_syncer __P((void));
569 int textvp_fullpath __P((struct proc *p, char **retbuf,
571 int vaccess __P((enum vtype type, mode_t file_mode, uid_t uid, gid_t gid,
572 mode_t acc_mode, struct ucred *cred, int *privused));
573 int vaccess_acl_posix1e __P((enum vtype type, uid_t file_uid,
574 gid_t file_gid, struct acl *acl, mode_t acc_mode,
575 struct ucred *cred, int *privused));
576 void vattr_null __P((struct vattr *vap));
577 int vcount __P((struct vnode *vp));
578 void vdrop __P((struct vnode *));
579 int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp));
580 void vfs_add_vnodeops __P((const void *));
581 void vfs_rm_vnodeops __P((const void *));
582 int vflush __P((struct mount *mp, int rootrefs, int flags));
583 int vget __P((struct vnode *vp, int lockflag, struct proc *p));
584 void vgone __P((struct vnode *vp));
585 void vgonel __P((struct vnode *vp, struct proc *p));
586 void vhold __P((struct vnode *));
587 int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred,
588 struct proc *p, int slpflag, int slptimeo));
589 int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p,
590 off_t length, int blksize));
591 void vprint __P((char *label, struct vnode *vp));
592 int vrecycle __P((struct vnode *vp, struct mtx *inter_lkp,
594 int vn_close __P((struct vnode *vp,
595 int flags, struct ucred *cred, struct proc *p));
596 void vn_finished_write __P((struct mount *mp));
597 int vn_isdisk __P((struct vnode *vp, int *errp));
598 int vn_lock __P((struct vnode *vp, int flags, struct proc *p));
600 int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p,
601 const char *filename, int line));
602 #define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
604 int vn_open __P((struct nameidata *ndp, int *flagp, int cmode));
605 void vn_pollevent __P((struct vnode *vp, int events));
606 void vn_pollgone __P((struct vnode *vp));
607 int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events));
608 int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base,
609 int len, off_t offset, enum uio_seg segflg, int ioflg,
610 struct ucred *cred, int *aresid, struct proc *p));
611 int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p));
612 int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags));
613 dev_t vn_todev __P((struct vnode *vp));
614 int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp,
616 int vn_writechk __P((struct vnode *vp));
617 int vn_extattr_get __P((struct vnode *vp, int ioflg, int attrnamespace,
618 const char *attrname, int *buflen, char *buf, struct proc *p));
619 int vn_extattr_set __P((struct vnode *vp, int ioflg, int attrnamespace,
620 const char *attrname, int buflen, char *buf, struct proc *p));
621 int vn_extattr_rm(struct vnode *vp, int ioflg, int attrnamespace,
622 const char *attrname, struct proc *p);
623 int vfs_cache_lookup __P((struct vop_lookup_args *ap));
624 int vfs_object_create __P((struct vnode *vp, struct proc *p,
625 struct ucred *cred));
626 void vfs_timestamp __P((struct timespec *));
627 void vfs_write_resume __P((struct mount *mp));
628 void vfs_write_suspend __P((struct mount *mp));
629 int vop_stdbmap __P((struct vop_bmap_args *));
630 int vop_stdgetwritemount __P((struct vop_getwritemount_args *));
631 int vop_stdgetpages __P((struct vop_getpages_args *));
632 int vop_stdinactive __P((struct vop_inactive_args *));
633 int vop_stdislocked __P((struct vop_islocked_args *));
634 int vop_stdlock __P((struct vop_lock_args *));
635 int vop_stdputpages __P((struct vop_putpages_args *));
636 int vop_stdunlock __P((struct vop_unlock_args *));
637 int vop_noislocked __P((struct vop_islocked_args *));
638 int vop_nolock __P((struct vop_lock_args *));
639 int vop_nopoll __P((struct vop_poll_args *));
640 int vop_nounlock __P((struct vop_unlock_args *));
641 int vop_stdpathconf __P((struct vop_pathconf_args *));
642 int vop_stdpoll __P((struct vop_poll_args *));
643 int vop_revoke __P((struct vop_revoke_args *));
644 int vop_sharedlock __P((struct vop_lock_args *));
645 int vop_eopnotsupp __P((struct vop_generic_args *ap));
646 int vop_ebadf __P((struct vop_generic_args *ap));
647 int vop_einval __P((struct vop_generic_args *ap));
648 int vop_enotty __P((struct vop_generic_args *ap));
649 int vop_defaultop __P((struct vop_generic_args *ap));
650 int vop_null __P((struct vop_generic_args *ap));
651 int vop_panic __P((struct vop_generic_args *ap));
652 int vop_stdcreatevobject __P((struct vop_createvobject_args *ap));
653 int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap));
654 int vop_stdgetvobject __P((struct vop_getvobject_args *ap));
656 void vfree __P((struct vnode *));
657 void vput __P((struct vnode *vp));
658 void vrele __P((struct vnode *vp));
659 void vref __P((struct vnode *vp));
660 void vbusy __P((struct vnode *vp));
662 extern vop_t **default_vnodeop_p;
663 extern vop_t **spec_vnodeop_p;
664 extern vop_t **dead_vnodeop_p;
668 #endif /* !_SYS_VNODE_H_ */