Fix some warnings and raise WARNS to 6.
[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 $
3c37c940 35 * $DragonFly: src/sys/sys/vnode.h,v 1.74 2007/05/06 19:23:33 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_RPC_H_
77#include <sys/syslink_rpc.h>
31bd717a 78#endif
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79#ifndef _SYS_SYSREF_H_
80#include <sys/sysref.h>
81#endif
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82#ifndef _SYS_CCMS_H_
83#include <sys/ccms.h>
84#endif
03d6a592 85#ifndef _MACHINE_LOCK_H_
984263bc 86#include <machine/lock.h>
03d6a592 87#endif
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88
89/*
90 * The vnode is the focus of all file activity in UNIX. There is a
91 * unique vnode allocated for each active file, each current directory,
92 * each mounted-on file, text file, and the root.
93 */
94
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95/*
96 * Each underlying filesystem allocates its own private area and hangs
97 * it from v_data. If non-null, this area is freed in getnewvnode().
98 */
99TAILQ_HEAD(buflists, buf);
100
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101/*
102 * Range locks protect offset ranges in files and directories at a high
103 * level, allowing the actual I/O to be broken down into smaller pieces.
104 * Range locks will eventually be integrated into the clustered cache
105 * coherency infrastructure.
106 *
107 * We use a simple data structure for now, but eventually this should
108 * probably be a btree or red-black tree.
109 */
110struct vrangelock;
111
112TAILQ_HEAD(vrangelock_list, vrangelock);
113
114struct vrangehead {
115 struct vrangelock_list vh_list;
116};
117
118struct vrangelock {
119 TAILQ_ENTRY(vrangelock) vr_node;
120 int vr_flags;
121 off_t vr_offset;
122 off_t vr_length;
123};
124
125#define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */
126#define RNGL_CHECK 0x0002 /* check for work on unlock */
127#define RNGL_SHARED 0x0004 /* shared lock, else exclusive */
128#define RNGL_ONLIST 0x0008 /* sanity check */
129
130static __inline
131void
132vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length)
133{
134 vr->vr_flags = flags;
135 vr->vr_offset = offset;
136 vr->vr_length = length;
137}
138
139#ifdef _KERNEL
140
141void vrange_lock(struct vnode *vp, struct vrangelock *vr);
142void vrange_unlock(struct vnode *vp, struct vrangelock *vr);
143
144static __inline
145void
146vrange_lock_shared(struct vnode *vp, struct vrangelock *vr,
147 off_t offset, off_t length)
148{
149 vrange_init(vr, RNGL_SHARED, offset, length);
150 vrange_lock(vp, vr);
151}
152
153static __inline
154void
155vrange_lock_excl(struct vnode *vp, struct vrangelock *vr,
156 off_t offset, off_t length)
157{
158 vrange_init(vr, 0, offset, length);
159 vrange_lock(vp, vr);
160}
161
162#endif
0961aa92 163
984263bc 164/*
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165 * The vnode infrastructure is being reorgranized. Most reference-related
166 * fields are locked by the BGL, and most file I/O related operations and
167 * vnode teardown functions are locked by the vnode lock.
168 *
169 * File read operations require a shared lock, file write operations require
170 * an exclusive lock. Most directory operations (read or write) currently
171 * require an exclusive lock due to the side effects stored in the directory
172 * inode (which we intend to fix).
173 *
174 * File reads and writes are further protected by a range lock. The intention
175 * is to be able to break I/O operations down into more easily managed pieces
176 * so vm_page arrays can be passed through rather then UIOs. This work will
177 * occur in multiple stages. The range locks will also eventually be used to
178 * deal with clustered cache coherency issues and, more immediately, to
179 * protect operations associated with the kernel-managed journaling module.
e4c9c0c8 180 *
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181 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
182 * typically points to &v_mount->mnt_vn_use_ops. We use a double
183 * pointer because mnt_vn_use_ops may change dynamically when e.g.
184 * journaling is turned on or off.
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185 *
186 * NOTE: v_filesize is currently only applicable when a VM object is
187 * associated with the vnode. Otherwise it will be set to NOOFFSET.
984263bc 188 */
6bae6177 189RB_HEAD(buf_rb_tree, buf);
1f1ea522 190RB_HEAD(buf_rb_hash, buf);
6bae6177 191
984263bc 192struct vnode {
6b008938 193 int v_flag; /* vnode flags (see below) */
81b5c339 194 int v_writecount;
e4c9c0c8 195 int v_opencount; /* number of explicit opens */
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196 int v_auxrefs; /* auxiliary references */
197 struct sysref v_sysref; /* normal references */
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198 struct bio_track v_track_read; /* track I/O's in progress */
199 struct bio_track v_track_write; /* track I/O's in progress */
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200 struct mount *v_mount; /* ptr to vfs we are in */
201 struct vop_ops **v_ops; /* vnode operations vector */
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202 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
203 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
6bae6177 204 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
54df1108 205 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
1f1ea522 206 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
984263bc 207 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
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208 enum vtype v_type; /* vnode type */
209 union {
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210 struct socket *vu_socket; /* unix ipc (VSOCK) */
211 struct {
e4c9c0c8 212 udev_t vu_udev; /* device number for attach */
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213 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */
214 SLIST_ENTRY(vnode) vu_cdevnext;
215 } vu_cdev;
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216 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
217 } v_un;
57f7b636 218 off_t v_filesize; /* file EOF or NOOFFSET */
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219 off_t v_lazyw; /* lazy write iterator */
220 off_t v_lastw; /* last write (write cluster) */
221 off_t v_cstart; /* start block of cluster */
222 off_t v_lasta; /* last allocation */
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223 int v_clen; /* length of current cluster */
224 struct vm_object *v_object; /* Place to store VM object */
3446c007 225 struct lock v_lock; /* file/dir ops lock */
984263bc 226 enum vtagtype v_tag; /* type of underlying data */
597aea93 227 void *v_data; /* private data for fs */
7ea21ed1 228 struct namecache_list v_namecache; /* associated nc entries */
984263bc 229 struct {
8a8d5d85 230 struct lwkt_token vpi_token; /* lock to protect below */
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231 struct selinfo vpi_selinfo; /* identity of poller(s) */
232 short vpi_events; /* what they are looking for */
233 short vpi_revents; /* what has happened */
234 } v_pollinfo;
29802dbb 235 struct vmresident *v_resident; /* optional vmresident */
6ddb7618 236 struct vrangehead v_range; /* range lock */
9bfc4d6d 237 struct ccms_dataspace v_ccms; /* cache coherency */
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238#ifdef DEBUG_LOCKS
239 const char *filename; /* Source file doing locking */
240 int line; /* Line number doing locking */
241#endif
5fd012e0 242 void *v_xaddr;
984263bc 243};
984263bc 244#define v_socket v_un.vu_socket
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245#define v_udev v_un.vu_cdev.vu_udev
246#define v_rdev v_un.vu_cdev.vu_cdevinfo
247#define v_cdevnext v_un.vu_cdev.vu_cdevnext
984263bc 248#define v_fifoinfo v_un.vu_fifoinfo
9d265729 249#define v_spinlock v_lock.lk_spinlock
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250
251#define VN_POLLEVENT(vp, events) \
252 do { \
253 if ((vp)->v_pollinfo.vpi_events & (events)) \
254 vn_pollevent((vp), (events)); \
255 } while (0)
256
257/*
258 * Vnode flags.
259 */
260#define VROOT 0x00001 /* root of its file system */
261#define VTEXT 0x00002 /* vnode is a pure text prototype */
262#define VSYSTEM 0x00004 /* vnode being used by kernel */
263#define VISTTY 0x00008 /* vnode represents a tty */
5fd012e0 264#define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */
12693083 265#define VCKPT 0x00020 /* checkpoint-restored vnode */
6b008938 266#define VFSMID 0x00040 /* request FSMID update */
7749886d 267#define VMAYHAVELOCKS 0x00080 /* there may be posix or flock locks on vp */
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268/* open for business 0x00100 */
269/* open for business 0x00200 */
81b5c339 270/* open for business 0x00400 */
984263bc 271/* open for business 0x00800 */
3c37c940 272#define VCACHED 0x01000 /* No active references but has cache value */
984263bc 273#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
3c37c940 274#define VINACTIVE 0x04000 /* The vnode is inactive (did VOP_INACTIVE) */
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275#define VAGE 0x08000 /* Insert vnode at head of free list */
276#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
277#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
5fd012e0 278#define VRECLAIMED 0x40000 /* This vnode has been destroyed */
984263bc 279#define VFREE 0x80000 /* This vnode is on the freelist */
5fd012e0 280/* open for business 0x100000 */
984263bc 281#define VONWORKLST 0x200000 /* On syncer work-list */
1d505369 282#define VMOUNT 0x400000 /* Mount in progress */
597aea93 283#define VOBJDIRTY 0x800000 /* object might be dirty */
984263bc 284
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285/*
286 * vmntvnodescan() flags
287 */
288#define VMSC_GETVP 1
289#define VMSC_GETVX 2
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290#define VMSC_NOWAIT 0x10
291
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292/*
293 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
294 * help with write clustering)
295 */
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296#define IO_UNIT 0x0001 /* do I/O as atomic unit */
297#define IO_APPEND 0x0002 /* append write to end */
298#define IO_SYNC 0x0004 /* do I/O synchronously */
299#define IO_NODELOCKED 0x0008 /* underlying node already locked */
300#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
301#define IO_VMIO 0x0020 /* data already in VMIO space */
302#define IO_INVAL 0x0040 /* invalidate after I/O */
303#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
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304#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
305#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
306#define IO_CORE 0x0400 /* I/O is part of core dump */
984263bc 307
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308#define IO_SEQMAX 0x7F /* seq heuristic max value */
309#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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310
311/*
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312 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
313 * and SVTX flag bits.
314 *
315 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls.
984263bc 316 */
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317#define VDELETE 040000 /* delete if the file/dir exists */
318#define VCREATE 020000 /* create if the file/dir does not exist */
319#define VEXCL 010000 /* error if the file/dir already exists */
320
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321#define VSUID 04000 /* set user id on execution */
322#define VSGID 02000 /* set group id on execution */
323#define VSVTX 01000 /* save swapped text even after use */
324#define VREAD 00400 /* read, write, execute permissions */
325#define VWRITE 00200
326#define VEXEC 00100
327
328/*
329 * Token indicating no attribute value yet assigned.
330 */
331#define VNOVAL (-1)
332
333/*
334 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
335 */
597aea93 336#define VLKTIMEOUT (hz / 20 + 1)
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337
338#ifdef _KERNEL
339
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340/*
341 * Convert between vnode types and inode formats (since POSIX.1
342 * defines mode word of stat structure in terms of inode formats).
343 */
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344extern enum vtype iftovt_tab[];
345extern int vttoif_tab[];
346#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
347#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
348#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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349
350/*
351 * Flags to various vnode functions.
352 */
353#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
354#define FORCECLOSE 0x0002 /* vflush: force file closure */
355#define WRITECLOSE 0x0004 /* vflush: only close writable files */
356#define DOCLOSE 0x0008 /* vclean: close active files */
357#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
358#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
359
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360#ifdef DIAGNOSTIC
361#define VATTR_NULL(vap) vattr_null(vap)
362#else
363#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
364#endif /* DIAGNOSTIC */
365
366#define NULLVP ((struct vnode *)NULL)
367
368#define VNODEOP_SET(f) \
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369 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \
370 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f);
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371
372/*
373 * Global vnode data.
374 */
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375struct objcache;
376
984263bc 377extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
28623bf9 378extern struct nchandle rootnch; /* root (i.e. "/") namecache */
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379extern int desiredvnodes; /* number of vnodes desired */
380extern time_t syncdelay; /* max time to delay syncing data */
381extern time_t filedelay; /* time to delay syncing files */
382extern time_t dirdelay; /* time to delay syncing directories */
383extern time_t metadelay; /* time to delay syncing metadata */
70aac194 384extern struct objcache *namei_oc;
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385extern int prtactive; /* nonzero to call vprint() */
386extern struct vattr va_null; /* predefined null vattr structure */
387extern int vfs_ioopt;
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388extern int numvnodes;
389extern int freevnodes;
fad57d0e 390extern int vfs_fastdev; /* fast specfs device access */
984263bc 391
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392/*
393 * Interlock for scanning list of vnodes attached to a mountpoint
394 */
8a8d5d85 395extern struct lwkt_token mntvnode_token;
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396
397/*
398 * This macro is very helpful in defining those offsets in the vdesc struct.
399 *
400 * This is stolen from X11R4. I ignored all the fancy stuff for
401 * Crays, so if you decide to port this to such a serious machine,
402 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
403 */
597aea93 404#define VOPARG_OFFSET(p_type,field) \
984263bc 405 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 406#define VOPARG_OFFSETOF(s_type,field) \
984263bc 407 VOPARG_OFFSET(s_type*,field)
597aea93 408#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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409 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
410
625ddaba 411typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
984263bc 412
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413/*
414 * VOCALL calls an op given an ops vector. We break it out because BSD's
415 * vclean changes the ops vector and then wants to call ops with the old
416 * vector.
417 */
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418
419typedef int (*vocall_func_t)(struct vop_generic_args *);
420
984263bc 421/*
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422 * This call executes the vops vector for the offset stored in the ap's
423 * descriptor of the passed vops rather then the one related to the
424 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
425 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
426 * vector function).
984263bc 427 */
0961aa92 428#define VOCALL(vops, ap) \
31bd717a 429 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap)
0961aa92 430
597aea93 431#define VDESC(OP) (& __CONCAT(OP,_desc))
984263bc 432
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433/*
434 * Public vnode manipulation functions.
435 */
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436struct file;
437struct mount;
fad57d0e 438struct nlookupdata;
984263bc 439struct proc;
dadab5e9 440struct thread;
984263bc 441struct stat;
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442struct ucred;
443struct uio;
444struct vattr;
445struct vnode;
984263bc 446
e4c9c0c8 447void addaliasu (struct vnode *vp, udev_t nvp_udev);
b13267a5 448int v_associate_rdev(struct vnode *vp, cdev_t dev);
e4c9c0c8 449void v_release_rdev(struct vnode *vp);
b13267a5 450int bdevvp (cdev_t dev, struct vnode **vpp);
5fd012e0 451struct vnode *allocvnode(int lktimeout, int lkflags);
3c37c940 452int freesomevnodes(int count);
6ddb7618 453int getnewvnode (enum vtagtype tag, struct mount *mp,
3446c007 454 struct vnode **vpp, int timo, int lkflags);
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455int getspecialvnode (enum vtagtype tag, struct mount *mp,
456 struct vop_ops **ops, struct vnode **vpp, int timo,
457 int lkflags);
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458int spec_vnoperate (struct vop_generic_args *);
459int speedup_syncer (void);
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460void vattr_null (struct vattr *vap);
461int vcount (struct vnode *vp);
b13267a5 462int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp);
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463void vfs_nadd_vnodeops_sysinit (void *);
464void vfs_nrm_vnodeops_sysinit (void *);
465void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
466void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
b153f746 467int vflush (struct mount *mp, int rootrefs, int flags);
5fd012e0 468int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 469 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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470 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
471 void *data);
472void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 473
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474void vclean_vxlocked (struct vnode *vp, int flags);
475void vgone_vxlocked (struct vnode *vp);
6b008938 476void vupdatefsmid (struct vnode *vp);
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477int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
478int vtruncbuf (struct vnode *vp, off_t length, int blksize);
4e0ecc94 479int vfsync(struct vnode *vp, int waitfor, int passes,
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480 int (*checkdef)(struct buf *),
481 int (*waitoutput)(struct vnode *, struct thread *));
1c843a13 482int vinitvmio(struct vnode *vp, off_t filesize);
b153f746 483void vprint (char *label, struct vnode *vp);
87de5057 484int vrecycle (struct vnode *vp);
81b5c339 485void vn_strategy(struct vnode *vp, struct bio *bio);
87de5057 486int vn_close (struct vnode *vp, int flags);
b153f746 487int vn_isdisk (struct vnode *vp, int *errp);
ca466bae 488int vn_lock (struct vnode *vp, int flags);
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489int vn_islocked (struct vnode *vp);
490void vn_unlock (struct vnode *vp);
984263bc 491#ifdef DEBUG_LOCKS
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492int debug_vn_lock (struct vnode *vp, int flags,
493 const char *filename, int line);
494#define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
984263bc 495#endif
b310dfc4 496
5d72d6ed 497int vn_get_namelen(struct vnode *, int *);
fad57d0e 498void vn_setspecops (struct file *fp);
b310dfc4 499int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
fad57d0e 500int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
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501void vn_pollevent (struct vnode *vp, int events);
502void vn_pollgone (struct vnode *vp);
87de5057 503int vn_pollrecord (struct vnode *vp, int events);
b153f746 504int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 505 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057 506 struct ucred *cred, int *aresid);
b153f746 507int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 508 int len, off_t offset, enum uio_seg segflg, int ioflg,
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509 struct ucred *cred, int *aresid);
510int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
b13267a5 511cdev_t vn_todev (struct vnode *vp);
b153f746 512void vfs_timestamp (struct timespec *);
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513int vn_writechk (struct vnode *vp, struct nchandle *nch);
514int ncp_writechk(struct nchandle *nch);
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515int vop_stdopen (struct vop_open_args *ap);
516int vop_stdclose (struct vop_close_args *ap);
2d3e977e 517int vop_nopoll (struct vop_poll_args *ap);
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518int vop_stdpathconf (struct vop_pathconf_args *ap);
519int vop_stdpoll (struct vop_poll_args *ap);
520int vop_stdrevoke (struct vop_revoke_args *ap);
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521int vop_eopnotsupp (struct vop_generic_args *ap);
522int vop_ebadf (struct vop_generic_args *ap);
523int vop_einval (struct vop_generic_args *ap);
524int vop_enotty (struct vop_generic_args *ap);
525int vop_defaultop (struct vop_generic_args *ap);
526int vop_null (struct vop_generic_args *ap);
527int vop_panic (struct vop_generic_args *ap);
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528int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
529 const char *);
b153f746 530
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531int vop_compat_nresolve(struct vop_nresolve_args *ap);
532int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
533int vop_compat_ncreate(struct vop_ncreate_args *ap);
534int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
535int vop_compat_nmknod(struct vop_nmknod_args *ap);
536int vop_compat_nlink(struct vop_nlink_args *ap);
537int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
538int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
539int vop_compat_nremove(struct vop_nremove_args *ap);
540int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
541int vop_compat_nrename(struct vop_nrename_args *ap);
542
e3332475 543void vx_lock (struct vnode *vp);
5fd012e0 544void vx_unlock (struct vnode *vp);
e3332475 545void vx_get (struct vnode *vp);
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546int vx_get_nonblock (struct vnode *vp);
547void vx_put (struct vnode *vp);
87de5057 548int vget (struct vnode *vp, int lockflag);
597aea93 549void vput (struct vnode *vp);
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550void vhold (struct vnode *);
551void vdrop (struct vnode *);
b153f746 552void vref (struct vnode *vp);
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553void vrele (struct vnode *vp);
554void vsetflags (struct vnode *vp, int flags);
555void vclrflags (struct vnode *vp, int flags);
556
557void vfs_subr_init(void);
558void vfs_mount_init(void);
559void vfs_lock_init(void);
560void vfs_sync_init(void);
561
562void vn_syncer_add_to_worklist(struct vnode *, int);
563void vnlru_proc_wait(void);
564
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565extern struct vop_ops default_vnode_vops;
566extern struct vop_ops spec_vnode_vops;
567extern struct vop_ops dead_vnode_vops;
568
569extern struct vop_ops *default_vnode_vops_p;
570extern struct vop_ops *spec_vnode_vops_p;
571extern struct vop_ops *dead_vnode_vops_p;
984263bc 572
03d6a592 573#endif /* _KERNEL */
984263bc 574
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575#endif /* _KERNEL || _KERNEL_STRUCTURES */
576#endif /* !_SYS_VNODE_H_ */