Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / sys / vnode.h
CommitLineData
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1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
32 *
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 $
b13267a5 35 * $DragonFly: src/sys/sys/vnode.h,v 1.68 2006/09/10 01:26:40 dillon Exp $
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36 */
37
38#ifndef _SYS_VNODE_H_
39#define _SYS_VNODE_H_
40
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41#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
42
43#ifndef _SYS_QUEUE_H_
984263bc 44#include <sys/queue.h>
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45#endif
46#ifndef _SYS_LOCK_H_
984263bc 47#include <sys/lock.h>
03d6a592 48#endif
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49#ifndef _SYS_SELINFO_H_
50#include <sys/selinfo.h>
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51#endif
52#ifndef _SYS_BIOTRACK_H_
81b5c339 53#include <sys/biotrack.h>
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54#endif
55#ifndef _SYS_UIO_H_
984263bc 56#include <sys/uio.h>
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57#endif
58#ifndef _SYS_ACL_H_
984263bc 59#include <sys/acl.h>
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60#endif
61#ifndef _SYS_NAMECACHE_H_
7ea21ed1 62#include <sys/namecache.h>
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63#endif
64#ifndef _SYS_THREAD_H_
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65#include <sys/thread.h>
66#endif
03d6a592 67#ifndef _SYS_VFSOPS_H_
0961aa92 68#include <sys/vfsops.h>
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69#endif
70#ifndef _SYS_VFSCACHE_H_
0961aa92 71#include <sys/vfscache.h>
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72#endif
73#ifndef _SYS_TREE_H_
6bae6177 74#include <sys/tree.h>
03d6a592 75#endif
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76#ifndef _SYS_SYSLINK_H_
77#include <sys/syslink.h>
78#endif
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79#ifndef _SYS_CCMS_H_
80#include <sys/ccms.h>
81#endif
03d6a592 82#ifndef _MACHINE_LOCK_H_
984263bc 83#include <machine/lock.h>
03d6a592 84#endif
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85
86/*
87 * The vnode is the focus of all file activity in UNIX. There is a
88 * unique vnode allocated for each active file, each current directory,
89 * each mounted-on file, text file, and the root.
90 */
91
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92/*
93 * Each underlying filesystem allocates its own private area and hangs
94 * it from v_data. If non-null, this area is freed in getnewvnode().
95 */
96TAILQ_HEAD(buflists, buf);
97
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98/*
99 * Range locks protect offset ranges in files and directories at a high
100 * level, allowing the actual I/O to be broken down into smaller pieces.
101 * Range locks will eventually be integrated into the clustered cache
102 * coherency infrastructure.
103 *
104 * We use a simple data structure for now, but eventually this should
105 * probably be a btree or red-black tree.
106 */
107struct vrangelock;
108
109TAILQ_HEAD(vrangelock_list, vrangelock);
110
111struct vrangehead {
112 struct vrangelock_list vh_list;
113};
114
115struct vrangelock {
116 TAILQ_ENTRY(vrangelock) vr_node;
117 int vr_flags;
118 off_t vr_offset;
119 off_t vr_length;
120};
121
122#define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */
123#define RNGL_CHECK 0x0002 /* check for work on unlock */
124#define RNGL_SHARED 0x0004 /* shared lock, else exclusive */
125#define RNGL_ONLIST 0x0008 /* sanity check */
126
127static __inline
128void
129vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length)
130{
131 vr->vr_flags = flags;
132 vr->vr_offset = offset;
133 vr->vr_length = length;
134}
135
136#ifdef _KERNEL
137
138void vrange_lock(struct vnode *vp, struct vrangelock *vr);
139void vrange_unlock(struct vnode *vp, struct vrangelock *vr);
140
141static __inline
142void
143vrange_lock_shared(struct vnode *vp, struct vrangelock *vr,
144 off_t offset, off_t length)
145{
146 vrange_init(vr, RNGL_SHARED, offset, length);
147 vrange_lock(vp, vr);
148}
149
150static __inline
151void
152vrange_lock_excl(struct vnode *vp, struct vrangelock *vr,
153 off_t offset, off_t length)
154{
155 vrange_init(vr, 0, offset, length);
156 vrange_lock(vp, vr);
157}
158
159#endif
0961aa92 160
984263bc 161/*
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162 * The vnode infrastructure is being reorgranized. Most reference-related
163 * fields are locked by the BGL, and most file I/O related operations and
164 * vnode teardown functions are locked by the vnode lock.
165 *
166 * File read operations require a shared lock, file write operations require
167 * an exclusive lock. Most directory operations (read or write) currently
168 * require an exclusive lock due to the side effects stored in the directory
169 * inode (which we intend to fix).
170 *
171 * File reads and writes are further protected by a range lock. The intention
172 * is to be able to break I/O operations down into more easily managed pieces
173 * so vm_page arrays can be passed through rather then UIOs. This work will
174 * occur in multiple stages. The range locks will also eventually be used to
175 * deal with clustered cache coherency issues and, more immediately, to
176 * protect operations associated with the kernel-managed journaling module.
e4c9c0c8 177 *
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178 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
179 * typically points to &v_mount->mnt_vn_use_ops. We use a double
180 * pointer because mnt_vn_use_ops may change dynamically when e.g.
181 * journaling is turned on or off.
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182 *
183 * NOTE: v_filesize is currently only applicable when a VM object is
184 * associated with the vnode. Otherwise it will be set to NOOFFSET.
984263bc 185 */
6bae6177 186RB_HEAD(buf_rb_tree, buf);
1f1ea522 187RB_HEAD(buf_rb_hash, buf);
6bae6177 188
984263bc 189struct vnode {
6b008938 190 int v_flag; /* vnode flags (see below) */
984263bc 191 int v_usecount; /* reference count of users */
81b5c339 192 int v_writecount;
984263bc 193 int v_holdcnt; /* page & buffer references */
e4c9c0c8 194 int v_opencount; /* number of explicit opens */
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195 struct bio_track v_track_read; /* track I/O's in progress */
196 struct bio_track v_track_write; /* track I/O's in progress */
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197 struct mount *v_mount; /* ptr to vfs we are in */
198 struct vop_ops **v_ops; /* vnode operations vector */
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199 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
200 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
6bae6177 201 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
54df1108 202 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
1f1ea522 203 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
984263bc 204 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
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205 enum vtype v_type; /* vnode type */
206 union {
207 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
208 struct socket *vu_socket; /* unix ipc (VSOCK) */
209 struct {
e4c9c0c8 210 udev_t vu_udev; /* device number for attach */
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211 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */
212 SLIST_ENTRY(vnode) vu_cdevnext;
213 } vu_cdev;
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214 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
215 } v_un;
57f7b636 216 off_t v_filesize; /* file EOF or NOOFFSET */
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217 off_t v_lazyw; /* lazy write iterator */
218 off_t v_lastw; /* last write (write cluster) */
219 off_t v_cstart; /* start block of cluster */
220 off_t v_lasta; /* last allocation */
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221 int v_clen; /* length of current cluster */
222 struct vm_object *v_object; /* Place to store VM object */
3446c007 223 struct lock v_lock; /* file/dir ops lock */
984263bc 224 enum vtagtype v_tag; /* type of underlying data */
597aea93 225 void *v_data; /* private data for fs */
7ea21ed1 226 struct namecache_list v_namecache; /* associated nc entries */
984263bc 227 struct {
8a8d5d85 228 struct lwkt_token vpi_token; /* lock to protect below */
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229 struct selinfo vpi_selinfo; /* identity of poller(s) */
230 short vpi_events; /* what they are looking for */
231 short vpi_revents; /* what has happened */
232 } v_pollinfo;
29802dbb 233 struct vmresident *v_resident; /* optional vmresident */
6ddb7618 234 struct vrangehead v_range; /* range lock */
9bfc4d6d 235 struct ccms_dataspace v_ccms; /* cache coherency */
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236#ifdef DEBUG_LOCKS
237 const char *filename; /* Source file doing locking */
238 int line; /* Line number doing locking */
239#endif
5fd012e0 240 void *v_xaddr;
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241};
242#define v_mountedhere v_un.vu_mountedhere
243#define v_socket v_un.vu_socket
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244#define v_udev v_un.vu_cdev.vu_udev
245#define v_rdev v_un.vu_cdev.vu_cdevinfo
246#define v_cdevnext v_un.vu_cdev.vu_cdevnext
984263bc 247#define v_fifoinfo v_un.vu_fifoinfo
9d265729 248#define v_spinlock v_lock.lk_spinlock
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249
250#define VN_POLLEVENT(vp, events) \
251 do { \
252 if ((vp)->v_pollinfo.vpi_events & (events)) \
253 vn_pollevent((vp), (events)); \
254 } while (0)
255
256/*
257 * Vnode flags.
258 */
259#define VROOT 0x00001 /* root of its file system */
260#define VTEXT 0x00002 /* vnode is a pure text prototype */
261#define VSYSTEM 0x00004 /* vnode being used by kernel */
262#define VISTTY 0x00008 /* vnode represents a tty */
5fd012e0 263#define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */
12693083 264#define VCKPT 0x00020 /* checkpoint-restored vnode */
6b008938 265#define VFSMID 0x00040 /* request FSMID update */
7749886d 266#define VMAYHAVELOCKS 0x00080 /* there may be posix or flock locks on vp */
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267/* open for business 0x00100 */
268/* open for business 0x00200 */
81b5c339 269/* open for business 0x00400 */
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270/* open for business 0x00800 */
271/* open for business 0x01000 */
272#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
5fd012e0 273#define VINACTIVE 0x04000 /* The vnode is inactive */
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274#define VAGE 0x08000 /* Insert vnode at head of free list */
275#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
276#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
5fd012e0 277#define VRECLAIMED 0x40000 /* This vnode has been destroyed */
984263bc 278#define VFREE 0x80000 /* This vnode is on the freelist */
5fd012e0 279/* open for business 0x100000 */
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280#define VONWORKLST 0x200000 /* On syncer work-list */
281#define VMOUNT 0x400000 /* Mount in progress */
597aea93 282#define VOBJDIRTY 0x800000 /* object might be dirty */
984263bc 283
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284/*
285 * vmntvnodescan() flags
286 */
287#define VMSC_GETVP 1
288#define VMSC_GETVX 2
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289#define VMSC_NOWAIT 0x10
290
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291/*
292 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
293 * help with write clustering)
294 */
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295#define IO_UNIT 0x0001 /* do I/O as atomic unit */
296#define IO_APPEND 0x0002 /* append write to end */
297#define IO_SYNC 0x0004 /* do I/O synchronously */
298#define IO_NODELOCKED 0x0008 /* underlying node already locked */
299#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
300#define IO_VMIO 0x0020 /* data already in VMIO space */
301#define IO_INVAL 0x0040 /* invalidate after I/O */
302#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
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303#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
304#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
305#define IO_CORE 0x0400 /* I/O is part of core dump */
984263bc 306
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307#define IO_SEQMAX 0x7F /* seq heuristic max value */
308#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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309
310/*
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311 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
312 * and SVTX flag bits.
313 *
314 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls.
984263bc 315 */
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316#define VDELETE 040000 /* delete if the file/dir exists */
317#define VCREATE 020000 /* create if the file/dir does not exist */
318#define VEXCL 010000 /* error if the file/dir already exists */
319
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320#define VSUID 04000 /* set user id on execution */
321#define VSGID 02000 /* set group id on execution */
322#define VSVTX 01000 /* save swapped text even after use */
323#define VREAD 00400 /* read, write, execute permissions */
324#define VWRITE 00200
325#define VEXEC 00100
326
327/*
328 * Token indicating no attribute value yet assigned.
329 */
330#define VNOVAL (-1)
331
332/*
333 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
334 */
597aea93 335#define VLKTIMEOUT (hz / 20 + 1)
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336
337#ifdef _KERNEL
338
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339/*
340 * Convert between vnode types and inode formats (since POSIX.1
341 * defines mode word of stat structure in terms of inode formats).
342 */
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343extern enum vtype iftovt_tab[];
344extern int vttoif_tab[];
345#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
346#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
347#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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348
349/*
350 * Flags to various vnode functions.
351 */
352#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
353#define FORCECLOSE 0x0002 /* vflush: force file closure */
354#define WRITECLOSE 0x0004 /* vflush: only close writable files */
355#define DOCLOSE 0x0008 /* vclean: close active files */
356#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
357#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
358
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359#ifdef DIAGNOSTIC
360#define VATTR_NULL(vap) vattr_null(vap)
361#else
362#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
363#endif /* DIAGNOSTIC */
364
365#define NULLVP ((struct vnode *)NULL)
366
367#define VNODEOP_SET(f) \
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368 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \
369 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f);
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370
371/*
372 * Global vnode data.
373 */
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374struct objcache;
375
984263bc 376extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
21739618 377extern struct namecache *rootncp; /* root (i.e. "/") namecache */
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378extern int desiredvnodes; /* number of vnodes desired */
379extern time_t syncdelay; /* max time to delay syncing data */
380extern time_t filedelay; /* time to delay syncing files */
381extern time_t dirdelay; /* time to delay syncing directories */
382extern time_t metadelay; /* time to delay syncing metadata */
70aac194 383extern struct objcache *namei_oc;
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384extern int prtactive; /* nonzero to call vprint() */
385extern struct vattr va_null; /* predefined null vattr structure */
386extern int vfs_ioopt;
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387extern int numvnodes;
388extern int freevnodes;
fad57d0e 389extern int vfs_fastdev; /* fast specfs device access */
984263bc 390
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391/*
392 * Interlock for scanning list of vnodes attached to a mountpoint
393 */
8a8d5d85 394extern struct lwkt_token mntvnode_token;
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395
396/*
397 * This macro is very helpful in defining those offsets in the vdesc struct.
398 *
399 * This is stolen from X11R4. I ignored all the fancy stuff for
400 * Crays, so if you decide to port this to such a serious machine,
401 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
402 */
597aea93 403#define VOPARG_OFFSET(p_type,field) \
984263bc 404 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 405#define VOPARG_OFFSETOF(s_type,field) \
984263bc 406 VOPARG_OFFSET(s_type*,field)
597aea93 407#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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408 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
409
625ddaba 410typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
984263bc 411
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412/*
413 * VOCALL calls an op given an ops vector. We break it out because BSD's
414 * vclean changes the ops vector and then wants to call ops with the old
415 * vector.
416 */
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417
418typedef int (*vocall_func_t)(struct vop_generic_args *);
419
984263bc 420/*
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421 * This call executes the vops vector for the offset stored in the ap's
422 * descriptor of the passed vops rather then the one related to the
423 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
424 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
425 * vector function).
984263bc 426 */
0961aa92 427#define VOCALL(vops, ap) \
31bd717a 428 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap)
0961aa92 429
597aea93 430#define VDESC(OP) (& __CONCAT(OP,_desc))
984263bc 431
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432/*
433 * Public vnode manipulation functions.
434 */
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435struct file;
436struct mount;
fad57d0e 437struct nlookupdata;
984263bc 438struct proc;
dadab5e9 439struct thread;
984263bc 440struct stat;
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441struct ucred;
442struct uio;
443struct vattr;
444struct vnode;
984263bc 445
e4c9c0c8 446void addaliasu (struct vnode *vp, udev_t nvp_udev);
b13267a5 447int v_associate_rdev(struct vnode *vp, cdev_t dev);
e4c9c0c8 448void v_release_rdev(struct vnode *vp);
b13267a5 449int bdevvp (cdev_t dev, struct vnode **vpp);
5fd012e0 450struct vnode *allocvnode(int lktimeout, int lkflags);
6ddb7618 451int getnewvnode (enum vtagtype tag, struct mount *mp,
3446c007 452 struct vnode **vpp, int timo, int lkflags);
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453int getspecialvnode (enum vtagtype tag, struct mount *mp,
454 struct vop_ops **ops, struct vnode **vpp, int timo,
455 int lkflags);
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456int spec_vnoperate (struct vop_generic_args *);
457int speedup_syncer (void);
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458void vattr_null (struct vattr *vap);
459int vcount (struct vnode *vp);
b13267a5 460int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp);
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461void vfs_nadd_vnodeops_sysinit (void *);
462void vfs_nrm_vnodeops_sysinit (void *);
463void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
464void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
b153f746 465int vflush (struct mount *mp, int rootrefs, int flags);
5fd012e0 466int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 467 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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468 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
469 void *data);
470void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 471
e3332475 472void vclean_interlocked (struct vnode *vp, int flags);
597aea93 473void vgone (struct vnode *vp);
e3332475 474void vgone_interlocked (struct vnode *vp);
6b008938 475void vupdatefsmid (struct vnode *vp);
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476int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
477int vtruncbuf (struct vnode *vp, off_t length, int blksize);
4e0ecc94 478int vfsync(struct vnode *vp, int waitfor, int passes,
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479 int (*checkdef)(struct buf *),
480 int (*waitoutput)(struct vnode *, struct thread *));
1c843a13 481int vinitvmio(struct vnode *vp, off_t filesize);
b153f746 482void vprint (char *label, struct vnode *vp);
87de5057 483int vrecycle (struct vnode *vp);
81b5c339 484void vn_strategy(struct vnode *vp, struct bio *bio);
87de5057 485int vn_close (struct vnode *vp, int flags);
b153f746 486int vn_isdisk (struct vnode *vp, int *errp);
ca466bae 487int vn_lock (struct vnode *vp, int flags);
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488int vn_islocked (struct vnode *vp);
489void vn_unlock (struct vnode *vp);
984263bc 490#ifdef DEBUG_LOCKS
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491int debug_vn_lock (struct vnode *vp, int flags,
492 const char *filename, int line);
493#define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
984263bc 494#endif
b310dfc4 495
5d72d6ed 496int vn_get_namelen(struct vnode *, int *);
fad57d0e 497void vn_setspecops (struct file *fp);
b310dfc4 498int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
fad57d0e 499int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
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500void vn_pollevent (struct vnode *vp, int events);
501void vn_pollgone (struct vnode *vp);
87de5057 502int vn_pollrecord (struct vnode *vp, int events);
b153f746 503int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 504 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057 505 struct ucred *cred, int *aresid);
b153f746 506int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 507 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057
MD
508 struct ucred *cred, int *aresid);
509int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
b13267a5 510cdev_t vn_todev (struct vnode *vp);
b153f746 511void vfs_timestamp (struct timespec *);
597aea93 512int vn_writechk (struct vnode *vp);
8ddc6004
MD
513int vop_stdopen (struct vop_open_args *ap);
514int vop_stdclose (struct vop_close_args *ap);
2d3e977e 515int vop_nopoll (struct vop_poll_args *ap);
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MD
516int vop_stdpathconf (struct vop_pathconf_args *ap);
517int vop_stdpoll (struct vop_poll_args *ap);
518int vop_stdrevoke (struct vop_revoke_args *ap);
b153f746
RG
519int vop_eopnotsupp (struct vop_generic_args *ap);
520int vop_ebadf (struct vop_generic_args *ap);
521int vop_einval (struct vop_generic_args *ap);
522int vop_enotty (struct vop_generic_args *ap);
523int vop_defaultop (struct vop_generic_args *ap);
524int vop_null (struct vop_generic_args *ap);
525int vop_panic (struct vop_generic_args *ap);
fc46f680
JS
526int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
527 const char *);
b153f746 528
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MD
529int vop_compat_nresolve(struct vop_nresolve_args *ap);
530int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
531int vop_compat_ncreate(struct vop_ncreate_args *ap);
532int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
533int vop_compat_nmknod(struct vop_nmknod_args *ap);
534int vop_compat_nlink(struct vop_nlink_args *ap);
535int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
536int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
537int vop_compat_nremove(struct vop_nremove_args *ap);
538int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
539int vop_compat_nrename(struct vop_nrename_args *ap);
540
e3332475 541void vx_lock (struct vnode *vp);
5fd012e0 542void vx_unlock (struct vnode *vp);
e3332475 543void vx_get (struct vnode *vp);
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MD
544int vx_get_nonblock (struct vnode *vp);
545void vx_put (struct vnode *vp);
87de5057 546int vget (struct vnode *vp, int lockflag);
597aea93 547void vput (struct vnode *vp);
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MD
548void vhold (struct vnode *);
549void vdrop (struct vnode *);
b153f746 550void vref (struct vnode *vp);
44b1cf3d 551void vref_initial (struct vnode *vp, int reactivate);
5fd012e0
MD
552void vrele (struct vnode *vp);
553void vsetflags (struct vnode *vp, int flags);
554void vclrflags (struct vnode *vp, int flags);
555
556void vfs_subr_init(void);
557void vfs_mount_init(void);
558void vfs_lock_init(void);
559void vfs_sync_init(void);
560
561void vn_syncer_add_to_worklist(struct vnode *, int);
562void vnlru_proc_wait(void);
563
66a1ddf5
MD
564extern struct vop_ops default_vnode_vops;
565extern struct vop_ops spec_vnode_vops;
566extern struct vop_ops dead_vnode_vops;
567
568extern struct vop_ops *default_vnode_vops_p;
569extern struct vop_ops *spec_vnode_vops_p;
570extern struct vop_ops *dead_vnode_vops_p;
984263bc 571
03d6a592 572#endif /* _KERNEL */
984263bc 573
03d6a592
MD
574#endif /* _KERNEL || _KERNEL_STRUCTURES */
575#endif /* !_SYS_VNODE_H_ */