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>
55 * The vnode is the focus of all file activity in UNIX. There is a
56 * unique vnode allocated for each active file, each current directory,
57 * each mounted-on file, text file, and the root.
61 * Vnode types. VNON means no type.
63 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
67 * These are for the benefit of external programs only (e.g., pstat)
68 * and should NEVER be inspected by the kernel.
71 VT_NON, VT_UFS, VT_NFS, VT_UNUSED, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
72 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
73 VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS,
74 VT_HPFS, VT_NWFS, VT_PSEUDOFS, VT_SMBFS, VT_UDF
78 * Each underlying filesystem allocates its own private area and hangs
79 * it from v_data. If non-null, this area is freed in getnewvnode().
81 TAILQ_HEAD(buflists, buf);
83 typedef int vop_t(void *);
87 struct mtx vpi_lock; /* lock to protect below */
88 struct selinfo vpi_selinfo; /* identity of poller(s) */
89 short vpi_events; /* what they are looking for */
90 short vpi_revents; /* what has happened */
94 * Reading or writing any of these items requires holding the appropriate lock.
95 * v_freelist is locked by the global vnode_free_list mutex.
96 * v_mntvnodes is locked by the global mntvnodes mutex.
97 * v_flag, v_usecount, v_holdcount and v_writecount are
98 * locked by the v_interlock mutex.
99 * v_pollinfo is locked by the lock contained inside it.
102 u_long v_flag; /* vnode flags (see below) */
103 int v_usecount; /* reference count of users */
104 int v_writecount; /* reference count of writers */
105 int v_holdcnt; /* page & buffer references */
106 u_long v_id; /* capability identifier */
107 struct mount *v_mount; /* ptr to vfs we are in */
108 vop_t **v_op; /* vnode operations vector */
109 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
110 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
111 struct buflists v_cleanblkhd; /* clean blocklist head */
112 struct buflists v_dirtyblkhd; /* dirty blocklist head */
113 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
114 long v_numoutput; /* num of writes in progress */
115 enum vtype v_type; /* vnode type */
117 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
118 struct socket *vu_socket; /* unix ipc (VSOCK) */
120 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
121 SLIST_ENTRY(vnode) vu_specnext;
123 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
125 daddr_t v_lastw; /* last write (write cluster) */
126 daddr_t v_cstart; /* start block of cluster */
127 daddr_t v_lasta; /* last allocation (cluster) */
128 int v_clen; /* length of current cluster */
129 struct vm_object *v_object; /* Place to store VM object */
130 struct mtx v_interlock; /* lock on usecount and flag */
131 struct lock v_lock; /* used if fs don't have one */
132 struct lock *v_vnlock; /* pointer to vnode lock */
133 enum vtagtype v_tag; /* type of underlying data */
134 void *v_data; /* private data for fs */
135 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */
136 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */
137 struct vnode *v_dd; /* .. vnode */
138 u_long v_ddid; /* .. capability identifier */
139 struct vpollinfo *v_pollinfo;
140 struct thread *v_vxproc; /* thread owning VXLOCK */
142 const char *filename; /* Source file doing locking */
143 int line; /* Line number doing locking */
146 #define v_mountedhere v_un.vu_mountedhere
147 #define v_socket v_un.vu_socket
148 #define v_rdev v_un.vu_spec.vu_specinfo
149 #define v_specnext v_un.vu_spec.vu_specnext
150 #define v_fifoinfo v_un.vu_fifoinfo
152 #define VN_POLLEVENT(vp, events) \
154 if ((vp)->v_pollinfo != NULL && \
155 (vp)->v_pollinfo->vpi_events & (events)) \
156 vn_pollevent((vp), (events)); \
159 #define VN_KNOTE(vp, b) \
161 if ((vp)->v_pollinfo != NULL) \
162 KNOTE(&vp->v_pollinfo->vpi_selinfo.si_note, (b)); \
168 #define VROOT 0x00001 /* root of its file system */
169 #define VTEXT 0x00002 /* vnode is a pure text prototype */
170 #define VSYSTEM 0x00004 /* vnode being used by kernel */
171 #define VISTTY 0x00008 /* vnode represents a tty */
172 #define VXLOCK 0x00100 /* vnode is locked to change underlying type */
173 #define VXWANT 0x00200 /* thread is waiting for vnode */
174 #define VBWAIT 0x00400 /* waiting for output to complete */
175 #define VNOSYNC 0x01000 /* unlinked, stop syncing */
176 /* open for business 0x01000 */
177 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */
178 #define VCOPYONWRITE 0x04000 /* vnode is doing copy-on-write */
179 #define VAGE 0x08000 /* Insert vnode at head of free list */
180 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */
181 #define VOWANT 0x20000 /* a thread is waiting for VOLOCK */
182 #define VDOOMED 0x40000 /* This vnode is being recycled */
183 #define VFREE 0x80000 /* This vnode is on the freelist */
184 /* open for business 0x100000 */
185 #define VONWORKLST 0x200000 /* On syncer work-list */
186 #define VMOUNT 0x400000 /* Mount in progress */
187 #define VOBJDIRTY 0x800000 /* object might be dirty */
190 * Vnode attributes. A field value of VNOVAL represents a field whose value
191 * is unavailable (getattr) or which is not to be changed (setattr).
194 enum vtype va_type; /* vnode type (for create) */
195 u_short va_mode; /* files access mode and type */
196 short va_nlink; /* number of references to file */
197 uid_t va_uid; /* owner user id */
198 gid_t va_gid; /* owner group id */
199 udev_t va_fsid; /* file system id */
200 long va_fileid; /* file id */
201 u_quad_t va_size; /* file size in bytes */
202 long va_blocksize; /* blocksize preferred for i/o */
203 struct timespec va_atime; /* time of last access */
204 struct timespec va_mtime; /* time of last modification */
205 struct timespec va_ctime; /* time file changed */
206 u_long va_gen; /* generation number of file */
207 u_long va_flags; /* flags defined for file */
208 udev_t va_rdev; /* device the special file represents */
209 u_quad_t va_bytes; /* bytes of disk space held by file */
210 u_quad_t va_filerev; /* file modification number */
211 u_int va_vaflags; /* operations flags, see below */
212 long va_spare; /* remain quad aligned */
216 * Flags for va_vaflags.
218 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
219 #define VA_EXCLUSIVE 0x02 /* exclusive create request */
222 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
223 * help with write clustering)
225 #define IO_UNIT 0x01 /* do I/O as atomic unit */
226 #define IO_APPEND 0x02 /* append write to end */
227 #define IO_SYNC 0x04 /* do I/O synchronously */
228 #define IO_NODELOCKED 0x08 /* underlying node already locked */
229 #define IO_NDELAY 0x10 /* FNDELAY flag set in file table */
230 #define IO_VMIO 0x20 /* data already in VMIO space */
231 #define IO_INVAL 0x40 /* invalidate after I/O */
232 #define IO_ASYNC 0x80 /* bawrite rather then bdwrite */
233 #define IO_DIRECT 0x100 /* attempt to bypass buffer cache */
234 #define IO_NOWDRAIN 0x200 /* do not block on wdrain */
237 * Modes. Some values same as Ixxx entries from inode.h for now.
239 #define VADMIN 010000 /* permission to administer vnode */
240 #define VSUID 004000 /* set user id on execution */
241 #define VSGID 002000 /* set group id on execution */
242 #define VSVTX 001000 /* save swapped text even after use */
243 #define VREAD 000400 /* read, write, execute permissions */
244 #define VWRITE 000200
248 * Token indicating no attribute value yet assigned.
253 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
255 #define VLKTIMEOUT (hz / 20 + 1)
259 #ifdef MALLOC_DECLARE
260 MALLOC_DECLARE(M_VNODE);
264 * Convert between vnode types and inode formats (since POSIX.1
265 * defines mode word of stat structure in terms of inode formats).
267 extern enum vtype iftovt_tab[];
268 extern int vttoif_tab[];
269 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
270 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
271 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
274 * Flags to various vnode functions.
276 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
277 #define FORCECLOSE 0x0002 /* vflush: force file closure */
278 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
279 #define DOCLOSE 0x0008 /* vclean: close active files */
280 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
281 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
282 #define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */
283 #define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */
284 #define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */
286 #define VREF(vp) vref(vp)
290 #define VATTR_NULL(vap) vattr_null(vap)
292 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
293 #endif /* DIAGNOSTIC */
295 #define NULLVP ((struct vnode *)NULL)
297 #define VNODEOP_SET(f) \
298 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
299 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
304 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
305 extern int desiredvnodes; /* number of vnodes desired */
306 extern uma_zone_t namei_zone;
307 extern int prtactive; /* nonzero to call vprint() */
308 extern struct vattr va_null; /* predefined null vattr structure */
309 extern int vfs_ioopt;
312 * Macro/function to check for client cache inconsistency w.r.t. leasing.
314 #define LEASE_READ 0x1 /* Check lease for readers */
315 #define LEASE_WRITE 0x2 /* Check lease for modifiers */
318 extern void (*lease_updatetime)(int deltat);
320 #define VSHOULDFREE(vp) \
321 (!((vp)->v_flag & (VFREE|VDOOMED)) && \
322 !(vp)->v_holdcnt && !(vp)->v_usecount && \
323 (!(vp)->v_object || \
324 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
326 #define VMIGHTFREE(vp) \
327 (!((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) && \
328 LIST_EMPTY(&(vp)->v_cache_src) && !(vp)->v_usecount)
330 #define VSHOULDBUSY(vp) \
331 (((vp)->v_flag & VFREE) && \
332 ((vp)->v_holdcnt || (vp)->v_usecount))
334 #define VI_LOCK(vp) mtx_lock(&(vp)->v_interlock)
335 #define VI_TRYLOCK(vp) mtx_trylock(&(vp)->v_interlock)
336 #define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock)
342 * Mods for extensibility.
346 * Flags for vdesc_flags:
348 #define VDESC_MAX_VPS 16
349 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
350 #define VDESC_VP0_WILLRELE 0x0001
351 #define VDESC_VP1_WILLRELE 0x0002
352 #define VDESC_VP2_WILLRELE 0x0004
353 #define VDESC_VP3_WILLRELE 0x0008
354 #define VDESC_NOMAP_VPP 0x0100
355 #define VDESC_VPP_WILLRELE 0x0200
358 * VDESC_NO_OFFSET is used to identify the end of the offset list
359 * and in places where no such field exists.
361 #define VDESC_NO_OFFSET -1
364 * This structure describes the vnode operation taking place.
366 struct vnodeop_desc {
367 int vdesc_offset; /* offset in vector,first for speed */
368 char *vdesc_name; /* a readable name for debugging */
369 int vdesc_flags; /* VDESC_* flags */
372 * These ops are used by bypass routines to map and locate arguments.
373 * Creds and procs are not needed in bypass routines, but sometimes
374 * they are useful to (for example) transport layers.
375 * Nameidata is useful because it has a cred in it.
377 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
378 int vdesc_vpp_offset; /* return vpp location */
379 int vdesc_cred_offset; /* cred location, if any */
380 int vdesc_thread_offset; /* thread location, if any */
381 int vdesc_componentname_offset; /* if any */
383 * Finally, we've got a list of private data (about each operation)
384 * for each transport layer. (Support to manage this list is not
387 caddr_t *vdesc_transports;
392 * A list of all the operation descs.
394 extern struct vnodeop_desc *vnodeop_descs[];
397 * Interlock for scanning list of vnodes attached to a mountpoint
399 extern struct mtx mntvnode_mtx;
402 * This macro is very helpful in defining those offsets in the vdesc struct.
404 * This is stolen from X11R4. I ignored all the fancy stuff for
405 * Crays, so if you decide to port this to such a serious machine,
406 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
408 #define VOPARG_OFFSET(p_type,field) \
409 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
410 #define VOPARG_OFFSETOF(s_type,field) \
411 VOPARG_OFFSET(s_type*,field)
412 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
413 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
417 * This structure is used to configure the new vnodeops vector.
419 struct vnodeopv_entry_desc {
420 struct vnodeop_desc *opve_op; /* which operation this is */
421 vop_t *opve_impl; /* code implementing this operation */
423 struct vnodeopv_desc {
424 /* ptr to the ptr to the vector where op should go */
425 vop_t ***opv_desc_vector_p;
426 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
430 * A generic structure.
431 * This can be used by bypass routines to identify generic arguments.
433 struct vop_generic_args {
434 struct vnodeop_desc *a_desc;
435 /* other random data follows, presumably */
439 #ifdef DEBUG_VFS_LOCKS
441 * Macros to aid in tracing VFS locking problems. Not totally
442 * reliable since if the thread sleeps between changing the lock
443 * state and checking it with the assert, some other thread could
444 * change the state. They are good enough for debugging a single
445 * filesystem using a single-threaded test. I find that 'cvs co src'
446 * is a pretty good test.
450 * [dfr] Kludge until I get around to fixing all the vfs locking.
452 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
453 || (vp)->v_tag == VT_NFS \
454 || (vp)->v_tag == VT_LFS \
455 || (vp)->v_tag == VT_ISOFS \
456 || (vp)->v_tag == VT_MSDOSFS \
457 || (vp)->v_tag == VT_DEVFS \
458 || (vp)->v_tag == VT_UDF)
460 #define ASSERT_VOP_LOCKED(vp, str) \
462 struct vnode *_vp = (vp); \
464 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \
465 panic("%s: %p is not locked but should be", str, _vp); \
468 #define ASSERT_VOP_UNLOCKED(vp, str) \
470 struct vnode *_vp = (vp); \
473 if (_vp && IS_LOCKING_VFS(_vp)) { \
474 lockstate = VOP_ISLOCKED(_vp, curthread); \
475 if (lockstate == LK_EXCLUSIVE) \
476 panic("%s: %p is locked but should not be", \
481 #define ASSERT_VOP_ELOCKED(vp, str) \
483 struct vnode *_vp = (vp); \
485 if (_vp && IS_LOCKING_VFS(_vp) && \
486 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
487 panic("%s: %p is not exclusive locked but should be", \
491 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
493 struct vnode *_vp = (vp); \
495 if (_vp && IS_LOCKING_VFS(_vp) && \
496 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
497 panic("%s: %p is not exclusive locked by another thread", \
501 #define ASSERT_VOP_SLOCKED(vp, str) \
503 struct vnode *_vp = (vp); \
505 if (_vp && IS_LOCKING_VFS(_vp) && \
506 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
507 panic("%s: %p is not locked shared but should be", \
513 #define ASSERT_VOP_LOCKED(vp, str)
514 #define ASSERT_VOP_UNLOCKED(vp, str)
519 * VOCALL calls an op given an ops vector. We break it out because BSD's
520 * vclean changes the ops vector and then wants to call ops with the old
523 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
526 * This call works for vnodes in the kernel.
528 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
529 #define VDESC(OP) (& __CONCAT(OP,_desc))
530 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
533 * VMIO support inline
536 extern int vmiodirenable;
539 vn_canvmio(struct vnode *vp)
541 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
547 * Finally, include the default set of vnode operations.
549 #include "vnode_if.h"
552 * Public vnode manipulation functions.
554 struct componentname;
568 extern int (*lease_check_hook)(struct vop_lease_args *);
570 struct vnode *addaliasu(struct vnode *vp, udev_t nvp_rdev);
571 int bdevvp(dev_t dev, struct vnode **vpp);
572 /* cache_* may belong in namei.h. */
573 void cache_enter(struct vnode *dvp, struct vnode *vp,
574 struct componentname *cnp);
575 int cache_lookup(struct vnode *dvp, struct vnode **vpp,
576 struct componentname *cnp);
577 void cache_purge(struct vnode *vp);
578 void cache_purgevfs(struct mount *mp);
579 int cache_leaf_test(struct vnode *vp);
580 void cvtstat(struct stat *st, struct ostat *ost);
581 void cvtnstat(struct stat *sb, struct nstat *nsb);
582 int getnewvnode(enum vtagtype tag,
583 struct mount *mp, vop_t **vops, struct vnode **vpp);
584 int lease_check(struct vop_lease_args *ap);
585 int spec_vnoperate(struct vop_generic_args *);
586 int speedup_syncer(void);
587 #define textvp_fullpath(p, rb, rfb) \
588 vn_fullpath(FIRST_THREAD_IN_PROC(p), (p)->p_textvp, rb, rfb)
589 int vn_fullpath(struct thread *td, struct vnode *vn,
590 char **retbuf, char **freebuf);
591 int vaccess(enum vtype type, mode_t file_mode, uid_t uid, gid_t gid,
592 mode_t acc_mode, struct ucred *cred, int *privused);
593 int vaccess_acl_posix1e(enum vtype type, uid_t file_uid,
594 gid_t file_gid, struct acl *acl, mode_t acc_mode,
595 struct ucred *cred, int *privused);
596 void vattr_null(struct vattr *vap);
597 int vcount(struct vnode *vp);
598 void vdrop(struct vnode *);
599 int vfinddev(dev_t dev, enum vtype type, struct vnode **vpp);
600 void vfs_add_vnodeops(const void *);
601 void vfs_rm_vnodeops(const void *);
602 int vflush(struct mount *mp, int rootrefs, int flags);
603 int vget(struct vnode *vp, int lockflag, struct thread *td);
604 void vgone(struct vnode *vp);
605 void vgonel(struct vnode *vp, struct thread *td);
606 void vhold(struct vnode *);
607 int vinvalbuf(struct vnode *vp, int save, struct ucred *cred,
608 struct thread *td, int slpflag, int slptimeo);
609 int vtruncbuf(struct vnode *vp, struct ucred *cred, struct thread *td,
610 off_t length, int blksize);
611 void vprint(char *label, struct vnode *vp);
612 int vrecycle(struct vnode *vp, struct mtx *inter_lkp,
614 int vn_close(struct vnode *vp,
615 int flags, struct ucred *cred, struct thread *td);
616 void vn_finished_write(struct mount *mp);
617 int vn_isdisk(struct vnode *vp, int *errp);
618 int vn_lock(struct vnode *vp, int flags, struct thread *td);
620 int debug_vn_lock(struct vnode *vp, int flags, struct thread *p,
621 const char *filename, int line);
622 #define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
624 int vn_mkdir(char *path, int mode, enum uio_seg segflg, struct thread *td);
625 int vn_open(struct nameidata *ndp, int *flagp, int cmode);
626 int vn_open_cred(struct nameidata *ndp, int *flagp, int cmode,
628 void vn_pollevent(struct vnode *vp, int events);
629 void vn_pollgone(struct vnode *vp);
630 int vn_pollrecord(struct vnode *vp, struct thread *p, int events);
631 int vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base,
632 int len, off_t offset, enum uio_seg segflg, int ioflg,
633 struct ucred *cred, int *aresid, struct thread *td);
634 int vn_rdwr_inchunks(enum uio_rw rw, struct vnode *vp, caddr_t base,
635 int len, off_t offset, enum uio_seg segflg, int ioflg,
636 struct ucred *cred, int *aresid, struct thread *td);
637 int vn_stat(struct vnode *vp, struct stat *sb, struct thread *td);
638 int vn_start_write(struct vnode *vp, struct mount **mpp, int flags);
639 dev_t vn_todev(struct vnode *vp);
640 int vn_write_suspend_wait(struct vnode *vp, struct mount *mp,
642 int vn_writechk(struct vnode *vp);
643 int vn_extattr_get(struct vnode *vp, int ioflg, int attrnamespace,
644 const char *attrname, int *buflen, char *buf, struct thread *td);
645 int vn_extattr_set(struct vnode *vp, int ioflg, int attrnamespace,
646 const char *attrname, int buflen, char *buf, struct thread *td);
647 int vn_extattr_rm(struct vnode *vp, int ioflg, int attrnamespace,
648 const char *attrname, struct thread *td);
649 int vfs_cache_lookup(struct vop_lookup_args *ap);
650 int vfs_object_create(struct vnode *vp, struct thread *td,
652 void vfs_timestamp(struct timespec *);
653 void vfs_write_resume(struct mount *mp);
654 void vfs_write_suspend(struct mount *mp);
655 int vop_stdbmap(struct vop_bmap_args *);
656 int vop_stdgetwritemount(struct vop_getwritemount_args *);
657 int vop_stdgetpages(struct vop_getpages_args *);
658 int vop_stdinactive(struct vop_inactive_args *);
659 int vop_stdislocked(struct vop_islocked_args *);
660 int vop_stdlock(struct vop_lock_args *);
661 int vop_stdputpages(struct vop_putpages_args *);
662 int vop_stdunlock(struct vop_unlock_args *);
663 int vop_noislocked(struct vop_islocked_args *);
664 int vop_nolock(struct vop_lock_args *);
665 int vop_nopoll(struct vop_poll_args *);
666 int vop_nounlock(struct vop_unlock_args *);
667 int vop_stdpathconf(struct vop_pathconf_args *);
668 int vop_stdpoll(struct vop_poll_args *);
669 int vop_revoke(struct vop_revoke_args *);
670 int vop_sharedlock(struct vop_lock_args *);
671 int vop_eopnotsupp(struct vop_generic_args *ap);
672 int vop_ebadf(struct vop_generic_args *ap);
673 int vop_einval(struct vop_generic_args *ap);
674 int vop_enotty(struct vop_generic_args *ap);
675 int vop_defaultop(struct vop_generic_args *ap);
676 int vop_null(struct vop_generic_args *ap);
677 int vop_panic(struct vop_generic_args *ap);
678 int vop_stdcreatevobject(struct vop_createvobject_args *ap);
679 int vop_stddestroyvobject(struct vop_destroyvobject_args *ap);
680 int vop_stdgetvobject(struct vop_getvobject_args *ap);
682 void vfree(struct vnode *);
683 void vput(struct vnode *vp);
684 void vrele(struct vnode *vp);
685 void vref(struct vnode *vp);
686 void vbusy(struct vnode *vp);
687 void v_addpollinfo(struct vnode *vp);
689 extern vop_t **default_vnodeop_p;
690 extern vop_t **spec_vnodeop_p;
691 extern vop_t **dead_vnodeop_p;
695 #endif /* !_SYS_VNODE_H_ */