kernel -- Per-mount syncer thread infrastructure.
[dragonfly.git] / sys / sys / vnode.h
CommitLineData
984263bc
MD
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 $
984263bc
MD
36 */
37
38#ifndef _SYS_VNODE_H_
39#define _SYS_VNODE_H_
40
03d6a592
MD
41#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
42
43#ifndef _SYS_QUEUE_H_
984263bc 44#include <sys/queue.h>
03d6a592
MD
45#endif
46#ifndef _SYS_LOCK_H_
984263bc 47#include <sys/lock.h>
03d6a592 48#endif
5b22f1a7
SG
49#ifndef _SYS_EVENT_H_
50#include <sys/event.h>
03d6a592
MD
51#endif
52#ifndef _SYS_BIOTRACK_H_
81b5c339 53#include <sys/biotrack.h>
03d6a592
MD
54#endif
55#ifndef _SYS_UIO_H_
984263bc 56#include <sys/uio.h>
03d6a592
MD
57#endif
58#ifndef _SYS_ACL_H_
984263bc 59#include <sys/acl.h>
03d6a592
MD
60#endif
61#ifndef _SYS_NAMECACHE_H_
7ea21ed1 62#include <sys/namecache.h>
03d6a592
MD
63#endif
64#ifndef _SYS_THREAD_H_
77a8676e
HP
65#include <sys/thread.h>
66#endif
03d6a592 67#ifndef _SYS_VFSOPS_H_
0961aa92 68#include <sys/vfsops.h>
03d6a592
MD
69#endif
70#ifndef _SYS_VFSCACHE_H_
0961aa92 71#include <sys/vfscache.h>
03d6a592
MD
72#endif
73#ifndef _SYS_TREE_H_
6bae6177 74#include <sys/tree.h>
03d6a592 75#endif
a3d02589
MD
76#ifndef _SYS_SYSLINK_RPC_H_
77#include <sys/syslink_rpc.h>
31bd717a 78#endif
3c37c940
MD
79#ifndef _SYS_SYSREF_H_
80#include <sys/sysref.h>
81#endif
9bfc4d6d
MD
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
984263bc
MD
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
95/*
984263bc
MD
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
6ddb7618 101/*
dad088a5
MD
102 * Struct for mount options to printable formats.
103 */
104struct mountctl_opt {
105 int o_opt;
106 const char *o_name;
107};
108
109/*
6ddb7618
MD
110 * The vnode infrastructure is being reorgranized. Most reference-related
111 * fields are locked by the BGL, and most file I/O related operations and
112 * vnode teardown functions are locked by the vnode lock.
113 *
114 * File read operations require a shared lock, file write operations require
115 * an exclusive lock. Most directory operations (read or write) currently
116 * require an exclusive lock due to the side effects stored in the directory
117 * inode (which we intend to fix).
118 *
119 * File reads and writes are further protected by a range lock. The intention
120 * is to be able to break I/O operations down into more easily managed pieces
121 * so vm_page arrays can be passed through rather then UIOs. This work will
122 * occur in multiple stages. The range locks will also eventually be used to
123 * deal with clustered cache coherency issues and, more immediately, to
124 * protect operations associated with the kernel-managed journaling module.
e4c9c0c8 125 *
008b2675
MD
126 * NOTE: Certain fields within the vnode structure requires v_token to be
127 * held. The vnode's normal lock need not be held when accessing
128 * these fields as long as the vnode is deterministically referenced
129 * (i.e. can't be ripped out from under the caller). This is typical
130 * for code paths based on descriptors or file pointers, but not for
131 * backdoor code paths that come in via the buffer cache.
6de32ba2 132 *
0202303b
MD
133 * v_rbclean_tree
134 * v_rbdirty_tree
135 * v_rbhash_tree
6de32ba2
MD
136 * v_pollinfo
137 *
6ddb7618
MD
138 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
139 * typically points to &v_mount->mnt_vn_use_ops. We use a double
140 * pointer because mnt_vn_use_ops may change dynamically when e.g.
141 * journaling is turned on or off.
57f7b636
MD
142 *
143 * NOTE: v_filesize is currently only applicable when a VM object is
144 * associated with the vnode. Otherwise it will be set to NOOFFSET.
f63911bf 145 *
aac0aabd 146 * NOTE: The following fields require a spin or token lock. Note that
b12defdc 147 * additional subsystems may use v_token or v_spin for other
aac0aabd 148 * purposes, e.g. vfs/fifofs/fifo_vnops.c
f63911bf 149 *
b12defdc 150 * v_namecache v_spin
f63911bf 151 * v_rb* v_token
984263bc 152 */
6bae6177 153RB_HEAD(buf_rb_tree, buf);
1f1ea522 154RB_HEAD(buf_rb_hash, buf);
6bae6177 155
984263bc 156struct vnode {
b12defdc 157 struct spinlock v_spin;
6b008938 158 int v_flag; /* vnode flags (see below) */
81b5c339 159 int v_writecount;
e4c9c0c8 160 int v_opencount; /* number of explicit opens */
3c37c940
MD
161 int v_auxrefs; /* auxiliary references */
162 struct sysref v_sysref; /* normal references */
81b5c339
MD
163 struct bio_track v_track_read; /* track I/O's in progress */
164 struct bio_track v_track_write; /* track I/O's in progress */
66a1ddf5
MD
165 struct mount *v_mount; /* ptr to vfs we are in */
166 struct vop_ops **v_ops; /* vnode operations vector */
0e8bd897 167 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist/cachelist */
984263bc 168 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
6bae6177 169 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
54df1108 170 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
1f1ea522 171 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
984263bc 172 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
984263bc
MD
173 enum vtype v_type; /* vnode type */
174 union {
984263bc
MD
175 struct socket *vu_socket; /* unix ipc (VSOCK) */
176 struct {
0e9b9130
MD
177 int vu_umajor; /* device number for attach */
178 int vu_uminor;
0de08e6d
MD
179 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */
180 SLIST_ENTRY(vnode) vu_cdevnext;
181 } vu_cdev;
984263bc
MD
182 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
183 } v_un;
57f7b636 184 off_t v_filesize; /* file EOF or NOOFFSET */
54078292
MD
185 off_t v_lazyw; /* lazy write iterator */
186 off_t v_lastw; /* last write (write cluster) */
187 off_t v_cstart; /* start block of cluster */
188 off_t v_lasta; /* last allocation */
984263bc
MD
189 int v_clen; /* length of current cluster */
190 struct vm_object *v_object; /* Place to store VM object */
3446c007 191 struct lock v_lock; /* file/dir ops lock */
008b2675 192 struct lwkt_token v_token; /* (see above) */
984263bc 193 enum vtagtype v_tag; /* type of underlying data */
597aea93 194 void *v_data; /* private data for fs */
f63911bf 195 struct namecache_list v_namecache; /* (S) associated nc entries */
984263bc 196 struct {
5b22f1a7 197 struct kqinfo vpi_kqinfo; /* identity of poller(s) */
984263bc 198 } v_pollinfo;
29802dbb 199 struct vmresident *v_resident; /* optional vmresident */
9bfc4d6d 200 struct ccms_dataspace v_ccms; /* cache coherency */
f423d507 201 struct mount *v_pfsmp; /* XXX: hack for PFS accounting */
984263bc
MD
202#ifdef DEBUG_LOCKS
203 const char *filename; /* Source file doing locking */
204 int line; /* Line number doing locking */
205#endif
206};
984263bc 207#define v_socket v_un.vu_socket
0e9b9130
MD
208#define v_umajor v_un.vu_cdev.vu_umajor
209#define v_uminor v_un.vu_cdev.vu_uminor
0de08e6d
MD
210#define v_rdev v_un.vu_cdev.vu_cdevinfo
211#define v_cdevnext v_un.vu_cdev.vu_cdevnext
984263bc
MD
212#define v_fifoinfo v_un.vu_fifoinfo
213
984263bc
MD
214/*
215 * Vnode flags.
216 */
3e35303e
MD
217#define VROOT 0x00000001 /* root of its file system */
218#define VTEXT 0x00000002 /* vnode is a pure text prototype */
219#define VSYSTEM 0x00000004 /* vnode being used by kernel */
220#define VISTTY 0x00000008 /* vnode represents a tty */
221#define VCTTYISOPEN 0x00000010 /* controlling terminal tty is open */
222#define VCKPT 0x00000020 /* checkpoint-restored vnode */
d98152a8 223/* open for business 0x00000040 */
3e35303e
MD
224#define VMAYHAVELOCKS 0x00000080 /* maybe posix or flock locks on vp */
225#define VPFSROOT 0x00000100 /* may be a pseudo filesystem root */
226/* open for business 0x00000200 */
0e8bd897
MD
227#define VAGE0 0x00000400 /* Age count for recycling - 2 bits */
228#define VAGE1 0x00000800 /* Age count for recycling - 2 bits */
3e35303e
MD
229#define VCACHED 0x00001000 /* No active references but has cache value */
230#define VOBJBUF 0x00002000 /* Allocate buffers in VM object */
231#define VINACTIVE 0x00004000 /* The vnode is inactive (did VOP_INACTIVE) */
0e8bd897 232/* open for business 0x00008000 */
3e35303e
MD
233#define VOLOCK 0x00010000 /* vnode is locked waiting for an object */
234#define VOWANT 0x00020000 /* a process is waiting for VOLOCK */
235#define VRECLAIMED 0x00040000 /* This vnode has been destroyed */
236#define VFREE 0x00080000 /* This vnode is on the freelist */
c0885fab 237#define VNOTSEEKABLE 0x00100000 /* rd/wr ignores file offset */
3e35303e
MD
238#define VONWORKLST 0x00200000 /* On syncer work-list */
239#define VMOUNT 0x00400000 /* Mount in progress */
240#define VOBJDIRTY 0x00800000 /* object might be dirty */
e9b56058 241#define VSWAPCACHE 0x01000000 /* enable swapcache */
aac0aabd
MD
242/* open for business 0x02000000 */
243/* open for business 0x04000000 */
2aff4871 244
984263bc 245/*
5fd012e0
MD
246 * vmntvnodescan() flags
247 */
19b97e01
MD
248#define VMSC_GETVP 0x01
249#define VMSC_GETVX 0x02
5fd012e0 250#define VMSC_NOWAIT 0x10
19b97e01 251#define VMSC_ONEPASS 0x20
5fd012e0
MD
252
253/*
984263bc
MD
254 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
255 * help with write clustering)
256 */
908b5ff6
MD
257#define IO_UNIT 0x0001 /* do I/O as atomic unit */
258#define IO_APPEND 0x0002 /* append write to end */
259#define IO_SYNC 0x0004 /* do I/O synchronously */
260#define IO_NODELOCKED 0x0008 /* underlying node already locked */
261#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
262#define IO_VMIO 0x0020 /* data already in VMIO space */
263#define IO_INVAL 0x0040 /* invalidate after I/O */
264#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
597aea93 265#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
cb63d1bc 266#define IO_RECURSE 0x0200 /* possibly device-recursive (vn) */
597aea93 267#define IO_CORE 0x0400 /* I/O is part of core dump */
a28fbe62 268#define IO_NRDELAY 0x0800 /* do not block on disk reads */
984263bc 269
597aea93
DR
270#define IO_SEQMAX 0x7F /* seq heuristic max value */
271#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
984263bc
MD
272
273/*
21739618
MD
274 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
275 * and SVTX flag bits.
984263bc
MD
276 */
277#define VSUID 04000 /* set user id on execution */
278#define VSGID 02000 /* set group id on execution */
279#define VSVTX 01000 /* save swapped text even after use */
280#define VREAD 00400 /* read, write, execute permissions */
281#define VWRITE 00200
282#define VEXEC 00100
283
284/*
285 * Token indicating no attribute value yet assigned.
286 */
287#define VNOVAL (-1)
288
289/*
290 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
291 */
597aea93 292#define VLKTIMEOUT (hz / 20 + 1)
984263bc
MD
293
294#ifdef _KERNEL
295
984263bc
MD
296/*
297 * Convert between vnode types and inode formats (since POSIX.1
298 * defines mode word of stat structure in terms of inode formats).
299 */
597aea93
DR
300extern enum vtype iftovt_tab[];
301extern int vttoif_tab[];
302#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
303#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
304#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
984263bc
MD
305
306/*
307 * Flags to various vnode functions.
308 */
309#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
310#define FORCECLOSE 0x0002 /* vflush: force file closure */
311#define WRITECLOSE 0x0004 /* vflush: only close writable files */
312#define DOCLOSE 0x0008 /* vclean: close active files */
313#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
984263bc 314
984263bc
MD
315#ifdef DIAGNOSTIC
316#define VATTR_NULL(vap) vattr_null(vap)
317#else
318#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
319#endif /* DIAGNOSTIC */
320
321#define NULLVP ((struct vnode *)NULL)
322
323#define VNODEOP_SET(f) \
66a1ddf5
MD
324 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \
325 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f);
984263bc
MD
326
327/*
328 * Global vnode data.
329 */
70aac194
MD
330struct objcache;
331
984263bc 332extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
28623bf9 333extern struct nchandle rootnch; /* root (i.e. "/") namecache */
984263bc
MD
334extern int desiredvnodes; /* number of vnodes desired */
335extern time_t syncdelay; /* max time to delay syncing data */
336extern time_t filedelay; /* time to delay syncing files */
337extern time_t dirdelay; /* time to delay syncing directories */
338extern time_t metadelay; /* time to delay syncing metadata */
70aac194 339extern struct objcache *namei_oc;
984263bc
MD
340extern int prtactive; /* nonzero to call vprint() */
341extern struct vattr va_null; /* predefined null vattr structure */
342extern int vfs_ioopt;
5fd012e0
MD
343extern int numvnodes;
344extern int freevnodes;
984263bc 345
984263bc
MD
346/*
347 * Interlock for scanning list of vnodes attached to a mountpoint
348 */
8a8d5d85 349extern struct lwkt_token mntvnode_token;
984263bc
MD
350
351/*
352 * This macro is very helpful in defining those offsets in the vdesc struct.
353 *
354 * This is stolen from X11R4. I ignored all the fancy stuff for
355 * Crays, so if you decide to port this to such a serious machine,
356 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
357 */
597aea93 358#define VOPARG_OFFSET(p_type,field) \
984263bc 359 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 360#define VOPARG_OFFSETOF(s_type,field) \
984263bc 361 VOPARG_OFFSET(s_type*,field)
597aea93 362#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
984263bc
MD
363 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
364
625ddaba 365typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
984263bc 366
984263bc
MD
367/*
368 * VOCALL calls an op given an ops vector. We break it out because BSD's
369 * vclean changes the ops vector and then wants to call ops with the old
370 * vector.
371 */
2d3e977e
MD
372
373typedef int (*vocall_func_t)(struct vop_generic_args *);
374
984263bc 375/*
0961aa92
MD
376 * This call executes the vops vector for the offset stored in the ap's
377 * descriptor of the passed vops rather then the one related to the
378 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
379 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
380 * vector function).
984263bc 381 */
0961aa92 382#define VOCALL(vops, ap) \
31bd717a 383 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap)
0961aa92 384
597aea93 385#define VDESC(OP) (& __CONCAT(OP,_desc))
984263bc
MD
386
387/*
984263bc
MD
388 * Public vnode manipulation functions.
389 */
984263bc
MD
390struct file;
391struct mount;
fad57d0e 392struct nlookupdata;
984263bc 393struct proc;
dadab5e9 394struct thread;
984263bc 395struct stat;
984263bc
MD
396struct ucred;
397struct uio;
398struct vattr;
399struct vnode;
50e4012a 400struct syncer_ctx;
984263bc 401
a8873631 402struct vnode *getsynthvnode(const char *devname);
0e9b9130 403void addaliasu (struct vnode *vp, int x, int y);
b13267a5 404int v_associate_rdev(struct vnode *vp, cdev_t dev);
e4c9c0c8 405void v_release_rdev(struct vnode *vp);
b13267a5 406int bdevvp (cdev_t dev, struct vnode **vpp);
5fd012e0 407struct vnode *allocvnode(int lktimeout, int lkflags);
3c37c940 408int freesomevnodes(int count);
6ddb7618 409int getnewvnode (enum vtagtype tag, struct mount *mp,
3446c007 410 struct vnode **vpp, int timo, int lkflags);
6ddb7618
MD
411int getspecialvnode (enum vtagtype tag, struct mount *mp,
412 struct vop_ops **ops, struct vnode **vpp, int timo,
413 int lkflags);
b153f746 414int speedup_syncer (void);
3b0783db 415int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, struct ucred *);
597aea93
DR
416void vattr_null (struct vattr *vap);
417int vcount (struct vnode *vp);
b13267a5 418int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp);
66a1ddf5
MD
419void vfs_nadd_vnodeops_sysinit (void *);
420void vfs_nrm_vnodeops_sysinit (void *);
421void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
422void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
b153f746 423int vflush (struct mount *mp, int rootrefs, int flags);
5fd012e0 424int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 425 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
5fd012e0
MD
426 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
427 void *data);
428void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 429
3c37c940 430void vclean_vxlocked (struct vnode *vp, int flags);
cf683bae 431void vclean_unlocked (struct vnode *vp);
3c37c940 432void vgone_vxlocked (struct vnode *vp);
b8477cda 433int vrevoke (struct vnode *vp, struct ucred *cred);
87de5057
MD
434int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
435int vtruncbuf (struct vnode *vp, off_t length, int blksize);
8452310f 436void vnode_pager_setsize (struct vnode *, vm_ooffset_t);
3bb7eedb 437int nvtruncbuf (struct vnode *vp, off_t length, int blksize, int boff);
8452310f 438int nvextendbuf(struct vnode *vp, off_t olength, off_t nlength,
3bb7eedb
MD
439 int oblksize, int nblksize,
440 int oboff, int nboff, int trivial);
441void nvnode_pager_setsize (struct vnode *vp, off_t length,
442 int blksize, int boff);
4e0ecc94 443int vfsync(struct vnode *vp, int waitfor, int passes,
6bae6177
MD
444 int (*checkdef)(struct buf *),
445 int (*waitoutput)(struct vnode *, struct thread *));
b0d18f7d 446int vinitvmio(struct vnode *vp, off_t filesize, int blksize, int boff);
b153f746 447void vprint (char *label, struct vnode *vp);
87de5057 448int vrecycle (struct vnode *vp);
2ec4b00d 449int vmaxiosize (struct vnode *vp);
81b5c339 450void vn_strategy(struct vnode *vp, struct bio *bio);
c504e38e 451int vn_cache_strategy(struct vnode *vp, struct bio *bio);
87de5057 452int vn_close (struct vnode *vp, int flags);
22a90887 453void vn_gone (struct vnode *vp);
b153f746 454int vn_isdisk (struct vnode *vp, int *errp);
a11aaa81 455int vn_islocked (struct vnode *vp);
94f2e6f2
MD
456int vn_islocked_unlock (struct vnode *vp);
457void vn_islocked_relock (struct vnode *vp, int vpls);
ead16d5b 458int vn_lock (struct vnode *vp, int flags);
a11aaa81 459void vn_unlock (struct vnode *vp);
ead16d5b 460
984263bc 461#ifdef DEBUG_LOCKS
ca466bae
MD
462int debug_vn_lock (struct vnode *vp, int flags,
463 const char *filename, int line);
464#define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
984263bc 465#endif
b310dfc4 466
ead16d5b
MD
467/*#define DEBUG_VN_UNLOCK*/
468#ifdef DEBUG_VN_UNLOCK
469void debug_vn_unlock (struct vnode *vp,
470 const char *filename, int line);
471#define vn_unlock(vp) debug_vn_unlock(vp, __FILE__, __LINE__)
472#endif
473
5d72d6ed 474int vn_get_namelen(struct vnode *, int *);
fad57d0e 475void vn_setspecops (struct file *fp);
5b4cfb7e 476int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf, int guess);
fad57d0e 477int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
a8873631 478int vn_opendisk (const char *devname, int fmode, struct vnode **vpp);
b153f746 479int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 480 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057 481 struct ucred *cred, int *aresid);
b153f746 482int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 483 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057
MD
484 struct ucred *cred, int *aresid);
485int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
b13267a5 486cdev_t vn_todev (struct vnode *vp);
b153f746 487void vfs_timestamp (struct timespec *);
dad088a5 488size_t vfs_flagstostr(int flags, const struct mountctl_opt *optp, char *buf, size_t len, int *errorp);
349433c9 489void vn_mark_atime(struct vnode *vp, struct thread *td);
28623bf9
MD
490int vn_writechk (struct vnode *vp, struct nchandle *nch);
491int ncp_writechk(struct nchandle *nch);
8ddc6004
MD
492int vop_stdopen (struct vop_open_args *ap);
493int vop_stdclose (struct vop_close_args *ap);
177403a9 494int vop_stdmountctl(struct vop_mountctl_args *ap);
1787385d
MD
495int vop_stdgetpages(struct vop_getpages_args *ap);
496int vop_stdputpages(struct vop_putpages_args *ap);
349433c9 497int vop_stdmarkatime(struct vop_markatime_args *ap);
aec8eea4
MD
498int vop_stdnoread(struct vop_read_args *ap);
499int vop_stdnowrite(struct vop_write_args *ap);
2d3e977e 500int vop_stdpathconf (struct vop_pathconf_args *ap);
b153f746
RG
501int vop_eopnotsupp (struct vop_generic_args *ap);
502int vop_ebadf (struct vop_generic_args *ap);
503int vop_einval (struct vop_generic_args *ap);
504int vop_enotty (struct vop_generic_args *ap);
505int vop_defaultop (struct vop_generic_args *ap);
506int vop_null (struct vop_generic_args *ap);
507int vop_panic (struct vop_generic_args *ap);
fc46f680
JS
508int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
509 const char *);
b153f746 510
fad57d0e
MD
511int vop_compat_nresolve(struct vop_nresolve_args *ap);
512int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
513int vop_compat_ncreate(struct vop_ncreate_args *ap);
514int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
515int vop_compat_nmknod(struct vop_nmknod_args *ap);
516int vop_compat_nlink(struct vop_nlink_args *ap);
517int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
518int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
519int vop_compat_nremove(struct vop_nremove_args *ap);
520int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
521int vop_compat_nrename(struct vop_nrename_args *ap);
522
e3332475 523void vx_lock (struct vnode *vp);
5fd012e0 524void vx_unlock (struct vnode *vp);
e3332475 525void vx_get (struct vnode *vp);
5fd012e0
MD
526int vx_get_nonblock (struct vnode *vp);
527void vx_put (struct vnode *vp);
87de5057 528int vget (struct vnode *vp, int lockflag);
597aea93 529void vput (struct vnode *vp);
5fd012e0 530void vhold (struct vnode *);
cf1bb2a8 531void vhold_interlocked (struct vnode *);
5fd012e0 532void vdrop (struct vnode *);
b153f746 533void vref (struct vnode *vp);
5fd012e0
MD
534void vrele (struct vnode *vp);
535void vsetflags (struct vnode *vp, int flags);
536void vclrflags (struct vnode *vp, int flags);
537
ead16d5b
MD
538/*#define DEBUG_VPUT*/
539#ifdef DEBUG_VPUT
540void debug_vput (struct vnode *vp, const char *filename, int line);
541#define vput(vp) debug_vput(vp, __FILE__, __LINE__)
542#endif
543
5fd012e0
MD
544void vfs_subr_init(void);
545void vfs_mount_init(void);
546void vfs_lock_init(void);
547void vfs_sync_init(void);
aac0aabd 548void mount_init(struct mount *mp);
5fd012e0 549
77912481
MD
550void vn_syncer_add(struct vnode *, int);
551void vn_syncer_remove(struct vnode *);
50e4012a
VS
552void vn_syncer_thr_create(struct mount *);
553void vn_syncer_thr_stop(struct mount *);
554
5fd012e0
MD
555void vnlru_proc_wait(void);
556
66a1ddf5 557extern struct vop_ops default_vnode_vops;
66a1ddf5
MD
558extern struct vop_ops dead_vnode_vops;
559
560extern struct vop_ops *default_vnode_vops_p;
66a1ddf5 561extern struct vop_ops *dead_vnode_vops_p;
984263bc 562
03d6a592 563#endif /* _KERNEL */
984263bc 564
03d6a592
MD
565#endif /* _KERNEL || _KERNEL_STRUCTURES */
566#endif /* !_SYS_VNODE_H_ */