kernel - Remove kernel-level ccms module (it will be moved into hammer2)
[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 $
67863d04 35 * $DragonFly: src/sys/sys/vnode.h,v 1.83 2008/09/17 21:44:19 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_EVENT_H_
50#include <sys/event.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
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 * Struct for mount options to printable formats.
100 */
101struct mountctl_opt {
102 int o_opt;
103 const char *o_name;
104};
105
984263bc 106/*
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107 * The vnode infrastructure is being reorgranized. Most reference-related
108 * fields are locked by the BGL, and most file I/O related operations and
109 * vnode teardown functions are locked by the vnode lock.
110 *
111 * File read operations require a shared lock, file write operations require
112 * an exclusive lock. Most directory operations (read or write) currently
113 * require an exclusive lock due to the side effects stored in the directory
114 * inode (which we intend to fix).
115 *
116 * File reads and writes are further protected by a range lock. The intention
117 * is to be able to break I/O operations down into more easily managed pieces
118 * so vm_page arrays can be passed through rather then UIOs. This work will
119 * occur in multiple stages. The range locks will also eventually be used to
120 * deal with clustered cache coherency issues and, more immediately, to
121 * protect operations associated with the kernel-managed journaling module.
e4c9c0c8 122 *
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123 * NOTE: Certain fields within the vnode structure requires v_token to be
124 * held. The vnode's normal lock need not be held when accessing
125 * these fields as long as the vnode is deterministically referenced
126 * (i.e. can't be ripped out from under the caller). This is typical
127 * for code paths based on descriptors or file pointers, but not for
128 * backdoor code paths that come in via the buffer cache.
6de32ba2 129 *
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130 * v_rbclean_tree
131 * v_rbdirty_tree
132 * v_rbhash_tree
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133 * v_pollinfo
134 *
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135 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
136 * typically points to &v_mount->mnt_vn_use_ops. We use a double
137 * pointer because mnt_vn_use_ops may change dynamically when e.g.
138 * journaling is turned on or off.
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139 *
140 * NOTE: v_filesize is currently only applicable when a VM object is
141 * associated with the vnode. Otherwise it will be set to NOOFFSET.
f63911bf 142 *
aac0aabd 143 * NOTE: The following fields require a spin or token lock. Note that
b12defdc 144 * additional subsystems may use v_token or v_spin for other
aac0aabd 145 * purposes, e.g. vfs/fifofs/fifo_vnops.c
f63911bf 146 *
b12defdc 147 * v_namecache v_spin
f63911bf 148 * v_rb* v_token
984263bc 149 */
6bae6177 150RB_HEAD(buf_rb_tree, buf);
1f1ea522 151RB_HEAD(buf_rb_hash, buf);
6bae6177 152
984263bc 153struct vnode {
b12defdc 154 struct spinlock v_spin;
6b008938 155 int v_flag; /* vnode flags (see below) */
81b5c339 156 int v_writecount;
e4c9c0c8 157 int v_opencount; /* number of explicit opens */
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158 int v_auxrefs; /* auxiliary references */
159 struct sysref v_sysref; /* normal references */
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160 struct bio_track v_track_read; /* track I/O's in progress */
161 struct bio_track v_track_write; /* track I/O's in progress */
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162 struct mount *v_mount; /* ptr to vfs we are in */
163 struct vop_ops **v_ops; /* vnode operations vector */
0e8bd897 164 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist/cachelist */
984263bc 165 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
6bae6177 166 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
54df1108 167 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
1f1ea522 168 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
984263bc 169 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
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170 enum vtype v_type; /* vnode type */
171 union {
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172 struct socket *vu_socket; /* unix ipc (VSOCK) */
173 struct {
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174 int vu_umajor; /* device number for attach */
175 int vu_uminor;
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176 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */
177 SLIST_ENTRY(vnode) vu_cdevnext;
178 } vu_cdev;
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179 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
180 } v_un;
57f7b636 181 off_t v_filesize; /* file EOF or NOOFFSET */
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182 off_t v_lazyw; /* lazy write iterator */
183 off_t v_lastw; /* last write (write cluster) */
184 off_t v_cstart; /* start block of cluster */
185 off_t v_lasta; /* last allocation */
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186 int v_clen; /* length of current cluster */
187 struct vm_object *v_object; /* Place to store VM object */
3446c007 188 struct lock v_lock; /* file/dir ops lock */
008b2675 189 struct lwkt_token v_token; /* (see above) */
984263bc 190 enum vtagtype v_tag; /* type of underlying data */
597aea93 191 void *v_data; /* private data for fs */
f63911bf 192 struct namecache_list v_namecache; /* (S) associated nc entries */
984263bc 193 struct {
5b22f1a7 194 struct kqinfo vpi_kqinfo; /* identity of poller(s) */
984263bc 195 } v_pollinfo;
29802dbb 196 struct vmresident *v_resident; /* optional vmresident */
5fae1203 197 struct mount *v_pfsmp; /* real mp for pfs/nullfs mt */
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198#ifdef DEBUG_LOCKS
199 const char *filename; /* Source file doing locking */
200 int line; /* Line number doing locking */
201#endif
202};
984263bc 203#define v_socket v_un.vu_socket
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204#define v_umajor v_un.vu_cdev.vu_umajor
205#define v_uminor v_un.vu_cdev.vu_uminor
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206#define v_rdev v_un.vu_cdev.vu_cdevinfo
207#define v_cdevnext v_un.vu_cdev.vu_cdevnext
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208#define v_fifoinfo v_un.vu_fifoinfo
209
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210/*
211 * Vnode flags.
212 */
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213#define VROOT 0x00000001 /* root of its file system */
214#define VTEXT 0x00000002 /* vnode is a pure text prototype */
215#define VSYSTEM 0x00000004 /* vnode being used by kernel */
216#define VISTTY 0x00000008 /* vnode represents a tty */
217#define VCTTYISOPEN 0x00000010 /* controlling terminal tty is open */
218#define VCKPT 0x00000020 /* checkpoint-restored vnode */
d98152a8 219/* open for business 0x00000040 */
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220#define VMAYHAVELOCKS 0x00000080 /* maybe posix or flock locks on vp */
221#define VPFSROOT 0x00000100 /* may be a pseudo filesystem root */
222/* open for business 0x00000200 */
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223#define VAGE0 0x00000400 /* Age count for recycling - 2 bits */
224#define VAGE1 0x00000800 /* Age count for recycling - 2 bits */
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225#define VCACHED 0x00001000 /* No active references but has cache value */
226#define VOBJBUF 0x00002000 /* Allocate buffers in VM object */
227#define VINACTIVE 0x00004000 /* The vnode is inactive (did VOP_INACTIVE) */
0e8bd897 228/* open for business 0x00008000 */
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229#define VOLOCK 0x00010000 /* vnode is locked waiting for an object */
230#define VOWANT 0x00020000 /* a process is waiting for VOLOCK */
231#define VRECLAIMED 0x00040000 /* This vnode has been destroyed */
232#define VFREE 0x00080000 /* This vnode is on the freelist */
c0885fab 233#define VNOTSEEKABLE 0x00100000 /* rd/wr ignores file offset */
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234#define VONWORKLST 0x00200000 /* On syncer work-list */
235#define VMOUNT 0x00400000 /* Mount in progress */
236#define VOBJDIRTY 0x00800000 /* object might be dirty */
e9b56058 237#define VSWAPCACHE 0x01000000 /* enable swapcache */
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238/* open for business 0x02000000 */
239/* open for business 0x04000000 */
2aff4871 240
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241/*
242 * vmntvnodescan() flags
243 */
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244#define VMSC_GETVP 0x01
245#define VMSC_GETVX 0x02
5fd012e0 246#define VMSC_NOWAIT 0x10
19b97e01 247#define VMSC_ONEPASS 0x20
5fd012e0 248
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249/*
250 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
251 * help with write clustering)
252 */
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253#define IO_UNIT 0x0001 /* do I/O as atomic unit */
254#define IO_APPEND 0x0002 /* append write to end */
255#define IO_SYNC 0x0004 /* do I/O synchronously */
256#define IO_NODELOCKED 0x0008 /* underlying node already locked */
257#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
258#define IO_VMIO 0x0020 /* data already in VMIO space */
259#define IO_INVAL 0x0040 /* invalidate after I/O */
260#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
597aea93 261#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
cb63d1bc 262#define IO_RECURSE 0x0200 /* possibly device-recursive (vn) */
597aea93 263#define IO_CORE 0x0400 /* I/O is part of core dump */
a28fbe62 264#define IO_NRDELAY 0x0800 /* do not block on disk reads */
984263bc 265
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266#define IO_SEQMAX 0x7F /* seq heuristic max value */
267#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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268
269/*
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270 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
271 * and SVTX flag bits.
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272 */
273#define VSUID 04000 /* set user id on execution */
274#define VSGID 02000 /* set group id on execution */
275#define VSVTX 01000 /* save swapped text even after use */
276#define VREAD 00400 /* read, write, execute permissions */
277#define VWRITE 00200
278#define VEXEC 00100
279
280/*
281 * Token indicating no attribute value yet assigned.
282 */
283#define VNOVAL (-1)
284
285/*
286 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
287 */
597aea93 288#define VLKTIMEOUT (hz / 20 + 1)
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289
290#ifdef _KERNEL
291
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292/*
293 * Convert between vnode types and inode formats (since POSIX.1
294 * defines mode word of stat structure in terms of inode formats).
295 */
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296extern enum vtype iftovt_tab[];
297extern int vttoif_tab[];
298#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
299#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
300#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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301
302/*
303 * Flags to various vnode functions.
304 */
305#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
306#define FORCECLOSE 0x0002 /* vflush: force file closure */
307#define WRITECLOSE 0x0004 /* vflush: only close writable files */
308#define DOCLOSE 0x0008 /* vclean: close active files */
309#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
984263bc 310
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311#ifdef DIAGNOSTIC
312#define VATTR_NULL(vap) vattr_null(vap)
313#else
314#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
315#endif /* DIAGNOSTIC */
316
317#define NULLVP ((struct vnode *)NULL)
318
319#define VNODEOP_SET(f) \
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320 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \
321 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f);
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322
323/*
324 * Global vnode data.
325 */
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326struct objcache;
327
984263bc 328extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
28623bf9 329extern struct nchandle rootnch; /* root (i.e. "/") namecache */
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330extern int desiredvnodes; /* number of vnodes desired */
331extern time_t syncdelay; /* max time to delay syncing data */
332extern time_t filedelay; /* time to delay syncing files */
333extern time_t dirdelay; /* time to delay syncing directories */
334extern time_t metadelay; /* time to delay syncing metadata */
70aac194 335extern struct objcache *namei_oc;
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336extern int prtactive; /* nonzero to call vprint() */
337extern struct vattr va_null; /* predefined null vattr structure */
338extern int vfs_ioopt;
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339extern int numvnodes;
340extern int freevnodes;
984263bc 341
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342/*
343 * Interlock for scanning list of vnodes attached to a mountpoint
344 */
8a8d5d85 345extern struct lwkt_token mntvnode_token;
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346
347/*
348 * This macro is very helpful in defining those offsets in the vdesc struct.
349 *
350 * This is stolen from X11R4. I ignored all the fancy stuff for
351 * Crays, so if you decide to port this to such a serious machine,
352 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
353 */
597aea93 354#define VOPARG_OFFSET(p_type,field) \
984263bc 355 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 356#define VOPARG_OFFSETOF(s_type,field) \
984263bc 357 VOPARG_OFFSET(s_type*,field)
597aea93 358#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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359 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
360
625ddaba 361typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
984263bc 362
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363/*
364 * VOCALL calls an op given an ops vector. We break it out because BSD's
365 * vclean changes the ops vector and then wants to call ops with the old
366 * vector.
367 */
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368
369typedef int (*vocall_func_t)(struct vop_generic_args *);
370
984263bc 371/*
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372 * This call executes the vops vector for the offset stored in the ap's
373 * descriptor of the passed vops rather then the one related to the
374 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
375 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
376 * vector function).
984263bc 377 */
0961aa92 378#define VOCALL(vops, ap) \
31bd717a 379 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap)
0961aa92 380
597aea93 381#define VDESC(OP) (& __CONCAT(OP,_desc))
984263bc 382
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383/*
384 * Public vnode manipulation functions.
385 */
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386struct file;
387struct mount;
fad57d0e 388struct nlookupdata;
984263bc 389struct proc;
dadab5e9 390struct thread;
984263bc 391struct stat;
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392struct ucred;
393struct uio;
394struct vattr;
395struct vnode;
50e4012a 396struct syncer_ctx;
984263bc 397
a8873631 398struct vnode *getsynthvnode(const char *devname);
0e9b9130 399void addaliasu (struct vnode *vp, int x, int y);
b13267a5 400int v_associate_rdev(struct vnode *vp, cdev_t dev);
e4c9c0c8 401void v_release_rdev(struct vnode *vp);
b13267a5 402int bdevvp (cdev_t dev, struct vnode **vpp);
5fd012e0 403struct vnode *allocvnode(int lktimeout, int lkflags);
3c37c940 404int freesomevnodes(int count);
6ddb7618 405int getnewvnode (enum vtagtype tag, struct mount *mp,
3446c007 406 struct vnode **vpp, int timo, int lkflags);
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407int getspecialvnode (enum vtagtype tag, struct mount *mp,
408 struct vop_ops **ops, struct vnode **vpp, int timo,
409 int lkflags);
b153f746 410int speedup_syncer (void);
3b0783db 411int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, struct ucred *);
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412void vattr_null (struct vattr *vap);
413int vcount (struct vnode *vp);
b13267a5 414int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp);
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415void vfs_nadd_vnodeops_sysinit (void *);
416void vfs_nrm_vnodeops_sysinit (void *);
417void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
418void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
b153f746 419int vflush (struct mount *mp, int rootrefs, int flags);
5fd012e0 420int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 421 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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422 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
423 void *data);
424void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 425
3c37c940 426void vclean_vxlocked (struct vnode *vp, int flags);
cf683bae 427void vclean_unlocked (struct vnode *vp);
3c37c940 428void vgone_vxlocked (struct vnode *vp);
b8477cda 429int vrevoke (struct vnode *vp, struct ucred *cred);
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430int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
431int vtruncbuf (struct vnode *vp, off_t length, int blksize);
8452310f 432void vnode_pager_setsize (struct vnode *, vm_ooffset_t);
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433int nvtruncbuf (struct vnode *vp, off_t length, int blksize, int boff,
434 int trivial);
8452310f 435int nvextendbuf(struct vnode *vp, off_t olength, off_t nlength,
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436 int oblksize, int nblksize,
437 int oboff, int nboff, int trivial);
438void nvnode_pager_setsize (struct vnode *vp, off_t length,
439 int blksize, int boff);
4e0ecc94 440int vfsync(struct vnode *vp, int waitfor, int passes,
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441 int (*checkdef)(struct buf *),
442 int (*waitoutput)(struct vnode *, struct thread *));
b0d18f7d 443int vinitvmio(struct vnode *vp, off_t filesize, int blksize, int boff);
b153f746 444void vprint (char *label, struct vnode *vp);
87de5057 445int vrecycle (struct vnode *vp);
2ec4b00d 446int vmaxiosize (struct vnode *vp);
81b5c339 447void vn_strategy(struct vnode *vp, struct bio *bio);
c504e38e 448int vn_cache_strategy(struct vnode *vp, struct bio *bio);
87de5057 449int vn_close (struct vnode *vp, int flags);
22a90887 450void vn_gone (struct vnode *vp);
b153f746 451int vn_isdisk (struct vnode *vp, int *errp);
a11aaa81 452int vn_islocked (struct vnode *vp);
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453int vn_islocked_unlock (struct vnode *vp);
454void vn_islocked_relock (struct vnode *vp, int vpls);
ead16d5b 455int vn_lock (struct vnode *vp, int flags);
a11aaa81 456void vn_unlock (struct vnode *vp);
ead16d5b 457
984263bc 458#ifdef DEBUG_LOCKS
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459int debug_vn_lock (struct vnode *vp, int flags,
460 const char *filename, int line);
461#define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
984263bc 462#endif
b310dfc4 463
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464/*#define DEBUG_VN_UNLOCK*/
465#ifdef DEBUG_VN_UNLOCK
466void debug_vn_unlock (struct vnode *vp,
467 const char *filename, int line);
468#define vn_unlock(vp) debug_vn_unlock(vp, __FILE__, __LINE__)
469#endif
470
5d72d6ed 471int vn_get_namelen(struct vnode *, int *);
fad57d0e 472void vn_setspecops (struct file *fp);
5b4cfb7e 473int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf, int guess);
fad57d0e 474int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
a8873631 475int vn_opendisk (const char *devname, int fmode, struct vnode **vpp);
b153f746 476int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 477 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057 478 struct ucred *cred, int *aresid);
b153f746 479int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 480 int len, off_t offset, enum uio_seg segflg, int ioflg,
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481 struct ucred *cred, int *aresid);
482int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
b13267a5 483cdev_t vn_todev (struct vnode *vp);
b153f746 484void vfs_timestamp (struct timespec *);
dad088a5 485size_t vfs_flagstostr(int flags, const struct mountctl_opt *optp, char *buf, size_t len, int *errorp);
349433c9 486void vn_mark_atime(struct vnode *vp, struct thread *td);
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487int vn_writechk (struct vnode *vp, struct nchandle *nch);
488int ncp_writechk(struct nchandle *nch);
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489int vop_stdopen (struct vop_open_args *ap);
490int vop_stdclose (struct vop_close_args *ap);
177403a9 491int vop_stdmountctl(struct vop_mountctl_args *ap);
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492int vop_stdgetpages(struct vop_getpages_args *ap);
493int vop_stdputpages(struct vop_putpages_args *ap);
349433c9 494int vop_stdmarkatime(struct vop_markatime_args *ap);
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495int vop_stdnoread(struct vop_read_args *ap);
496int vop_stdnowrite(struct vop_write_args *ap);
2d3e977e 497int vop_stdpathconf (struct vop_pathconf_args *ap);
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498int vop_eopnotsupp (struct vop_generic_args *ap);
499int vop_ebadf (struct vop_generic_args *ap);
500int vop_einval (struct vop_generic_args *ap);
501int vop_enotty (struct vop_generic_args *ap);
502int vop_defaultop (struct vop_generic_args *ap);
503int vop_null (struct vop_generic_args *ap);
504int vop_panic (struct vop_generic_args *ap);
fc46f680
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505int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
506 const char *);
b153f746 507
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508int vop_compat_nresolve(struct vop_nresolve_args *ap);
509int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
510int vop_compat_ncreate(struct vop_ncreate_args *ap);
511int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
512int vop_compat_nmknod(struct vop_nmknod_args *ap);
513int vop_compat_nlink(struct vop_nlink_args *ap);
514int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
515int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
516int vop_compat_nremove(struct vop_nremove_args *ap);
517int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
518int vop_compat_nrename(struct vop_nrename_args *ap);
519
e3332475 520void vx_lock (struct vnode *vp);
5fd012e0 521void vx_unlock (struct vnode *vp);
e3332475 522void vx_get (struct vnode *vp);
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523int vx_get_nonblock (struct vnode *vp);
524void vx_put (struct vnode *vp);
87de5057 525int vget (struct vnode *vp, int lockflag);
597aea93 526void vput (struct vnode *vp);
5fd012e0 527void vhold (struct vnode *);
cf1bb2a8 528void vhold_interlocked (struct vnode *);
5fd012e0 529void vdrop (struct vnode *);
b153f746 530void vref (struct vnode *vp);
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531void vrele (struct vnode *vp);
532void vsetflags (struct vnode *vp, int flags);
533void vclrflags (struct vnode *vp, int flags);
534
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535/*#define DEBUG_VPUT*/
536#ifdef DEBUG_VPUT
537void debug_vput (struct vnode *vp, const char *filename, int line);
538#define vput(vp) debug_vput(vp, __FILE__, __LINE__)
539#endif
540
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541void vfs_subr_init(void);
542void vfs_mount_init(void);
543void vfs_lock_init(void);
544void vfs_sync_init(void);
aac0aabd 545void mount_init(struct mount *mp);
5fd012e0 546
77912481
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547void vn_syncer_add(struct vnode *, int);
548void vn_syncer_remove(struct vnode *);
50e4012a 549void vn_syncer_thr_create(struct mount *);
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VS
550void *vn_syncer_thr_getctx(struct mount *);
551void vn_syncer_thr_stop(void *);
50e4012a 552
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MD
553void vnlru_proc_wait(void);
554
66a1ddf5 555extern struct vop_ops default_vnode_vops;
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556extern struct vop_ops dead_vnode_vops;
557
558extern struct vop_ops *default_vnode_vops_p;
66a1ddf5 559extern struct vop_ops *dead_vnode_vops_p;
984263bc 560
03d6a592 561#endif /* _KERNEL */
984263bc 562
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563#endif /* _KERNEL || _KERNEL_STRUCTURES */
564#endif /* !_SYS_VNODE_H_ */