Remove advertising header from lib/ and libexec/
[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 $
35 */
36
37#ifndef _SYS_VNODE_H_
38#define _SYS_VNODE_H_
39
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40#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
41
42#ifndef _SYS_QUEUE_H_
984263bc 43#include <sys/queue.h>
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44#endif
45#ifndef _SYS_LOCK_H_
984263bc 46#include <sys/lock.h>
03d6a592 47#endif
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48#ifndef _SYS_EVENT_H_
49#include <sys/event.h>
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50#endif
51#ifndef _SYS_BIOTRACK_H_
81b5c339 52#include <sys/biotrack.h>
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53#endif
54#ifndef _SYS_UIO_H_
984263bc 55#include <sys/uio.h>
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56#endif
57#ifndef _SYS_ACL_H_
984263bc 58#include <sys/acl.h>
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59#endif
60#ifndef _SYS_NAMECACHE_H_
7ea21ed1 61#include <sys/namecache.h>
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62#endif
63#ifndef _SYS_THREAD_H_
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64#include <sys/thread.h>
65#endif
03d6a592 66#ifndef _SYS_VFSOPS_H_
0961aa92 67#include <sys/vfsops.h>
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68#endif
69#ifndef _SYS_VFSCACHE_H_
0961aa92 70#include <sys/vfscache.h>
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71#endif
72#ifndef _SYS_TREE_H_
6bae6177 73#include <sys/tree.h>
03d6a592 74#endif
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75#ifndef _SYS_SYSLINK_RPC_H_
76#include <sys/syslink_rpc.h>
31bd717a 77#endif
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78#ifndef _SYS_SYSREF_H_
79#include <sys/sysref.h>
80#endif
03d6a592 81#ifndef _MACHINE_LOCK_H_
984263bc 82#include <machine/lock.h>
03d6a592 83#endif
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84
85/*
86 * The vnode is the focus of all file activity in UNIX. There is a
87 * unique vnode allocated for each active file, each current directory,
88 * each mounted-on file, text file, and the root.
89 */
90
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91/*
92 * Each underlying filesystem allocates its own private area and hangs
93 * it from v_data. If non-null, this area is freed in getnewvnode().
94 */
95TAILQ_HEAD(buflists, buf);
96
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97/*
98 * Struct for mount options to printable formats.
99 */
100struct mountctl_opt {
101 int o_opt;
102 const char *o_name;
103};
104
984263bc 105/*
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106 * The vnode infrastructure is being reorgranized. Most reference-related
107 * fields are locked by the BGL, and most file I/O related operations and
108 * vnode teardown functions are locked by the vnode lock.
109 *
110 * File read operations require a shared lock, file write operations require
111 * an exclusive lock. Most directory operations (read or write) currently
112 * require an exclusive lock due to the side effects stored in the directory
113 * inode (which we intend to fix).
114 *
115 * File reads and writes are further protected by a range lock. The intention
116 * is to be able to break I/O operations down into more easily managed pieces
117 * so vm_page arrays can be passed through rather then UIOs. This work will
118 * occur in multiple stages. The range locks will also eventually be used to
119 * deal with clustered cache coherency issues and, more immediately, to
120 * protect operations associated with the kernel-managed journaling module.
e4c9c0c8 121 *
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122 * NOTE: Certain fields within the vnode structure requires v_token to be
123 * held. The vnode's normal lock need not be held when accessing
124 * these fields as long as the vnode is deterministically referenced
125 * (i.e. can't be ripped out from under the caller). This is typical
126 * for code paths based on descriptors or file pointers, but not for
127 * backdoor code paths that come in via the buffer cache.
6de32ba2 128 *
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129 * v_rbclean_tree
130 * v_rbdirty_tree
131 * v_rbhash_tree
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132 * v_pollinfo
133 *
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134 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
135 * typically points to &v_mount->mnt_vn_use_ops. We use a double
136 * pointer because mnt_vn_use_ops may change dynamically when e.g.
137 * journaling is turned on or off.
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138 *
139 * NOTE: v_filesize is currently only applicable when a VM object is
140 * associated with the vnode. Otherwise it will be set to NOOFFSET.
f63911bf 141 *
aac0aabd 142 * NOTE: The following fields require a spin or token lock. Note that
b12defdc 143 * additional subsystems may use v_token or v_spin for other
aac0aabd 144 * purposes, e.g. vfs/fifofs/fifo_vnops.c
f63911bf 145 *
b12defdc 146 * v_namecache v_spin
f63911bf 147 * v_rb* v_token
984263bc 148 */
6bae6177 149RB_HEAD(buf_rb_tree, buf);
1f1ea522 150RB_HEAD(buf_rb_hash, buf);
6bae6177 151
984263bc 152struct vnode {
b12defdc 153 struct spinlock v_spin;
6b008938 154 int v_flag; /* vnode flags (see below) */
81b5c339 155 int v_writecount;
e4c9c0c8 156 int v_opencount; /* number of explicit opens */
3c37c940 157 int v_auxrefs; /* auxiliary references */
ee173d09 158 int v_refcnt;
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159 struct bio_track v_track_read; /* track I/O's in progress */
160 struct bio_track v_track_write; /* track I/O's in progress */
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161 struct mount *v_mount; /* ptr to vfs we are in */
162 struct vop_ops **v_ops; /* vnode operations vector */
ee173d09 163 TAILQ_ENTRY(vnode) v_list; /* vnode act/inact/cache/free */
984263bc 164 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
ee173d09 165 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
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 enum vtype v_type; /* vnode type */
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170 int16_t v_act; /* use heuristic */
171 int16_t v_state; /* active/free/cached */
984263bc 172 union {
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173 struct socket *vu_socket; /* unix ipc (VSOCK) */
174 struct {
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175 int vu_umajor; /* device number for attach */
176 int vu_uminor;
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177 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */
178 SLIST_ENTRY(vnode) vu_cdevnext;
179 } vu_cdev;
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180 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
181 } v_un;
57f7b636 182 off_t v_filesize; /* file EOF or NOOFFSET */
54078292 183 off_t v_lazyw; /* lazy write iterator */
984263bc 184 struct vm_object *v_object; /* Place to store VM object */
3446c007 185 struct lock v_lock; /* file/dir ops lock */
008b2675 186 struct lwkt_token v_token; /* (see above) */
984263bc 187 enum vtagtype v_tag; /* type of underlying data */
597aea93 188 void *v_data; /* private data for fs */
f63911bf 189 struct namecache_list v_namecache; /* (S) associated nc entries */
984263bc 190 struct {
5b22f1a7 191 struct kqinfo vpi_kqinfo; /* identity of poller(s) */
984263bc 192 } v_pollinfo;
29802dbb 193 struct vmresident *v_resident; /* optional vmresident */
5fae1203 194 struct mount *v_pfsmp; /* real mp for pfs/nullfs mt */
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195#ifdef DEBUG_LOCKS
196 const char *filename; /* Source file doing locking */
197 int line; /* Line number doing locking */
198#endif
199};
984263bc 200#define v_socket v_un.vu_socket
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201#define v_umajor v_un.vu_cdev.vu_umajor
202#define v_uminor v_un.vu_cdev.vu_uminor
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203#define v_rdev v_un.vu_cdev.vu_cdevinfo
204#define v_cdevnext v_un.vu_cdev.vu_cdevnext
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205#define v_fifoinfo v_un.vu_fifoinfo
206
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207/*
208 * Vnode flags.
209 */
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210#define VROOT 0x00000001 /* root of its file system */
211#define VTEXT 0x00000002 /* vnode is a pure text prototype */
212#define VSYSTEM 0x00000004 /* vnode being used by kernel */
213#define VISTTY 0x00000008 /* vnode represents a tty */
214#define VCTTYISOPEN 0x00000010 /* controlling terminal tty is open */
215#define VCKPT 0x00000020 /* checkpoint-restored vnode */
d98152a8 216/* open for business 0x00000040 */
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217#define VMAYHAVELOCKS 0x00000080 /* maybe posix or flock locks on vp */
218#define VPFSROOT 0x00000100 /* may be a pseudo filesystem root */
219/* open for business 0x00000200 */
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220#define VAGE0 0x00000400 /* Age count for recycling - 2 bits */
221#define VAGE1 0x00000800 /* Age count for recycling - 2 bits */
ee173d09 222/* open for business 0x00001000 */
3e35303e 223#define VOBJBUF 0x00002000 /* Allocate buffers in VM object */
ee173d09 224#define VINACTIVE 0x00004000 /* ran VOP_INACTIVE */
0e8bd897 225/* open for business 0x00008000 */
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226/* open for business 0x00010000 */
227/* open for business 0x00020000 */
3e35303e 228#define VRECLAIMED 0x00040000 /* This vnode has been destroyed */
ee173d09 229/* open for business 0x00080000 */
c0885fab 230#define VNOTSEEKABLE 0x00100000 /* rd/wr ignores file offset */
3e35303e 231#define VONWORKLST 0x00200000 /* On syncer work-list */
bf9f24c1 232#define VISDIRTY 0x00400000 /* inode dirty from VFS */
3e35303e 233#define VOBJDIRTY 0x00800000 /* object might be dirty */
e9b56058 234#define VSWAPCACHE 0x01000000 /* enable swapcache */
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235/* open for business 0x02000000 */
236/* open for business 0x04000000 */
2aff4871 237
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238/*
239 * v_state flags (v_state is interlocked by v_spin and vfs_spin)
240 */
241#define VS_CACHED 0
242#define VS_ACTIVE 1
243#define VS_INACTIVE 2
244#define VS_DYING 3
245
246/*
247 * v_refcnt uses bit 30 to flag that 1->0 transitions require finalization
248 * (actual deactivation) and bit 31 to indicate that deactivation is in
249 * progress.
250 *
251 * The VREFCNT() macro returns a negative number if the vnode is undergoing
252 * termination (value should not be interpreted beyond being negative),
253 * zero if it is cached and has no references, or a positive number
254 * indicating the number of refs.
255 */
256#define VREF_TERMINATE 0x80000000 /* termination in progress */
257#define VREF_FINALIZE 0x40000000 /* deactivate on last vrele */
258#define VREF_MASK 0xBFFFFFFF /* includes VREF_TERMINATE */
259
260#define VREFCNT(vp) ((int)((vp)->v_refcnt & VREF_MASK))
261
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262/*
263 * vmntvnodescan() flags
264 */
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265#define VMSC_GETVP 0x01
266#define VMSC_GETVX 0x02
5fd012e0 267#define VMSC_NOWAIT 0x10
19b97e01 268#define VMSC_ONEPASS 0x20
5fd012e0 269
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270/*
271 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
272 * help with write clustering)
273 */
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274#define IO_UNIT 0x0001 /* do I/O as atomic unit */
275#define IO_APPEND 0x0002 /* append write to end */
276#define IO_SYNC 0x0004 /* do I/O synchronously */
277#define IO_NODELOCKED 0x0008 /* underlying node already locked */
278#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
279#define IO_VMIO 0x0020 /* data already in VMIO space */
280#define IO_INVAL 0x0040 /* invalidate after I/O */
281#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
597aea93 282#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
cb63d1bc 283#define IO_RECURSE 0x0200 /* possibly device-recursive (vn) */
597aea93 284#define IO_CORE 0x0400 /* I/O is part of core dump */
a28fbe62 285#define IO_NRDELAY 0x0800 /* do not block on disk reads */
984263bc 286
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287#define IO_SEQMAX 0x7F /* seq heuristic max value */
288#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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289
290/*
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291 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
292 * and SVTX flag bits.
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293 */
294#define VSUID 04000 /* set user id on execution */
295#define VSGID 02000 /* set group id on execution */
296#define VSVTX 01000 /* save swapped text even after use */
297#define VREAD 00400 /* read, write, execute permissions */
298#define VWRITE 00200
299#define VEXEC 00100
300
301/*
302 * Token indicating no attribute value yet assigned.
303 */
304#define VNOVAL (-1)
305
306/*
307 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
308 */
597aea93 309#define VLKTIMEOUT (hz / 20 + 1)
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310
311#ifdef _KERNEL
312
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313/*
314 * Convert between vnode types and inode formats (since POSIX.1
315 * defines mode word of stat structure in terms of inode formats).
316 */
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317extern enum vtype iftovt_tab[];
318extern int vttoif_tab[];
319#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
320#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
321#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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322
323/*
324 * Flags to various vnode functions.
325 */
326#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
327#define FORCECLOSE 0x0002 /* vflush: force file closure */
328#define WRITECLOSE 0x0004 /* vflush: only close writable files */
329#define DOCLOSE 0x0008 /* vclean: close active files */
330#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
984263bc 331
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332#ifdef DIAGNOSTIC
333#define VATTR_NULL(vap) vattr_null(vap)
334#else
335#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
336#endif /* DIAGNOSTIC */
337
338#define NULLVP ((struct vnode *)NULL)
339
340#define VNODEOP_SET(f) \
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341 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \
342 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f);
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343
344/*
345 * Global vnode data.
346 */
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347struct objcache;
348
984263bc 349extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
28623bf9 350extern struct nchandle rootnch; /* root (i.e. "/") namecache */
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351extern int desiredvnodes; /* number of vnodes desired */
352extern time_t syncdelay; /* max time to delay syncing data */
353extern time_t filedelay; /* time to delay syncing files */
354extern time_t dirdelay; /* time to delay syncing directories */
355extern time_t metadelay; /* time to delay syncing metadata */
70aac194 356extern struct objcache *namei_oc;
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357extern int prtactive; /* nonzero to call vprint() */
358extern struct vattr va_null; /* predefined null vattr structure */
5fd012e0 359extern int numvnodes;
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360extern int inactivevnodes;
361extern int activevnodes;
362extern int cachedvnodes;
984263bc 363
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364/*
365 * This macro is very helpful in defining those offsets in the vdesc struct.
366 *
367 * This is stolen from X11R4. I ignored all the fancy stuff for
368 * Crays, so if you decide to port this to such a serious machine,
369 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
370 */
597aea93 371#define VOPARG_OFFSET(p_type,field) \
984263bc 372 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 373#define VOPARG_OFFSETOF(s_type,field) \
984263bc 374 VOPARG_OFFSET(s_type*,field)
597aea93 375#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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376 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
377
625ddaba 378typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
984263bc 379
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380/*
381 * VOCALL calls an op given an ops vector. We break it out because BSD's
382 * vclean changes the ops vector and then wants to call ops with the old
383 * vector.
384 */
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385
386typedef int (*vocall_func_t)(struct vop_generic_args *);
387
984263bc 388/*
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389 * This call executes the vops vector for the offset stored in the ap's
390 * descriptor of the passed vops rather then the one related to the
391 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
392 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
393 * vector function).
984263bc 394 */
0961aa92 395#define VOCALL(vops, ap) \
31bd717a 396 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap)
0961aa92 397
597aea93 398#define VDESC(OP) (& __CONCAT(OP,_desc))
984263bc 399
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400/*
401 * Public vnode manipulation functions.
402 */
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403struct file;
404struct mount;
fad57d0e 405struct nlookupdata;
984263bc 406struct proc;
dadab5e9 407struct thread;
984263bc 408struct stat;
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409struct ucred;
410struct uio;
411struct vattr;
412struct vnode;
50e4012a 413struct syncer_ctx;
984263bc 414
a8873631 415struct vnode *getsynthvnode(const char *devname);
0e9b9130 416void addaliasu (struct vnode *vp, int x, int y);
b13267a5 417int v_associate_rdev(struct vnode *vp, cdev_t dev);
e4c9c0c8 418void v_release_rdev(struct vnode *vp);
b13267a5 419int bdevvp (cdev_t dev, struct vnode **vpp);
5fd012e0 420struct vnode *allocvnode(int lktimeout, int lkflags);
62ae46c9 421void allocvnode_gc(void);
3c37c940 422int freesomevnodes(int count);
6ddb7618 423int getnewvnode (enum vtagtype tag, struct mount *mp,
3446c007 424 struct vnode **vpp, int timo, int lkflags);
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425int getspecialvnode (enum vtagtype tag, struct mount *mp,
426 struct vop_ops **ops, struct vnode **vpp, int timo,
427 int lkflags);
cf6a53ca 428void speedup_syncer (struct mount *mp);
3b0783db 429int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, struct ucred *);
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430void vattr_null (struct vattr *vap);
431int vcount (struct vnode *vp);
b13267a5 432int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp);
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433void vfs_nadd_vnodeops_sysinit (void *);
434void vfs_nrm_vnodeops_sysinit (void *);
435void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
436void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
b153f746 437int vflush (struct mount *mp, int rootrefs, int flags);
bf9f24c1 438
5fd012e0 439int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 440 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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441 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
442 void *data);
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443int vsyncscan(struct mount *mp, int flags,
444 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
445 void *data);
0f79f6b2 446void vclrisdirty(struct vnode *vp);
fd2da346 447void vclrobjdirty(struct vnode *vp);
0f79f6b2 448void vsetisdirty(struct vnode *vp);
fd2da346 449void vsetobjdirty(struct vnode *vp);
bf9f24c1 450
5fd012e0 451void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 452
3c37c940 453void vclean_vxlocked (struct vnode *vp, int flags);
cf683bae 454void vclean_unlocked (struct vnode *vp);
3c37c940 455void vgone_vxlocked (struct vnode *vp);
b8477cda 456int vrevoke (struct vnode *vp, struct ucred *cred);
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457int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
458int vtruncbuf (struct vnode *vp, off_t length, int blksize);
8452310f 459void vnode_pager_setsize (struct vnode *, vm_ooffset_t);
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460int nvtruncbuf (struct vnode *vp, off_t length, int blksize, int boff,
461 int trivial);
8452310f 462int nvextendbuf(struct vnode *vp, off_t olength, off_t nlength,
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463 int oblksize, int nblksize,
464 int oboff, int nboff, int trivial);
465void nvnode_pager_setsize (struct vnode *vp, off_t length,
466 int blksize, int boff);
4e0ecc94 467int vfsync(struct vnode *vp, int waitfor, int passes,
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468 int (*checkdef)(struct buf *),
469 int (*waitoutput)(struct vnode *, struct thread *));
b0d18f7d 470int vinitvmio(struct vnode *vp, off_t filesize, int blksize, int boff);
b153f746 471void vprint (char *label, struct vnode *vp);
87de5057 472int vrecycle (struct vnode *vp);
2ec4b00d 473int vmaxiosize (struct vnode *vp);
81b5c339 474void vn_strategy(struct vnode *vp, struct bio *bio);
c504e38e 475int vn_cache_strategy(struct vnode *vp, struct bio *bio);
3596743e 476int vn_close (struct vnode *vp, int flags, struct file *fp);
22a90887 477void vn_gone (struct vnode *vp);
b153f746 478int vn_isdisk (struct vnode *vp, int *errp);
a11aaa81 479int vn_islocked (struct vnode *vp);
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480int vn_islocked_unlock (struct vnode *vp);
481void vn_islocked_relock (struct vnode *vp, int vpls);
ead16d5b 482int vn_lock (struct vnode *vp, int flags);
a11aaa81 483void vn_unlock (struct vnode *vp);
ead16d5b 484
984263bc 485#ifdef DEBUG_LOCKS
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486int debug_vn_lock (struct vnode *vp, int flags,
487 const char *filename, int line);
488#define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__)
984263bc 489#endif
b310dfc4 490
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491/*#define DEBUG_VN_UNLOCK*/
492#ifdef DEBUG_VN_UNLOCK
493void debug_vn_unlock (struct vnode *vp,
494 const char *filename, int line);
495#define vn_unlock(vp) debug_vn_unlock(vp, __FILE__, __LINE__)
496#endif
497
5d72d6ed 498int vn_get_namelen(struct vnode *, int *);
fad57d0e 499void vn_setspecops (struct file *fp);
5b4cfb7e 500int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf, int guess);
fad57d0e 501int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
a8873631 502int vn_opendisk (const char *devname, int fmode, struct vnode **vpp);
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,
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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 *);
dad088a5 512size_t vfs_flagstostr(int flags, const struct mountctl_opt *optp, char *buf, size_t len, int *errorp);
349433c9 513void vn_mark_atime(struct vnode *vp, struct thread *td);
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514int vn_writechk (struct vnode *vp, struct nchandle *nch);
515int ncp_writechk(struct nchandle *nch);
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516int vop_stdopen (struct vop_open_args *ap);
517int vop_stdclose (struct vop_close_args *ap);
177403a9 518int vop_stdmountctl(struct vop_mountctl_args *ap);
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519int vop_stdgetpages(struct vop_getpages_args *ap);
520int vop_stdputpages(struct vop_putpages_args *ap);
349433c9 521int vop_stdmarkatime(struct vop_markatime_args *ap);
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522int vop_stdnoread(struct vop_read_args *ap);
523int vop_stdnowrite(struct vop_write_args *ap);
2d3e977e 524int vop_stdpathconf (struct vop_pathconf_args *ap);
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525int vop_eopnotsupp (struct vop_generic_args *ap);
526int vop_ebadf (struct vop_generic_args *ap);
527int vop_einval (struct vop_generic_args *ap);
528int vop_enotty (struct vop_generic_args *ap);
529int vop_defaultop (struct vop_generic_args *ap);
530int vop_null (struct vop_generic_args *ap);
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531int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
532 const char *);
b153f746 533
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534int vop_compat_nresolve(struct vop_nresolve_args *ap);
535int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
536int vop_compat_ncreate(struct vop_ncreate_args *ap);
537int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
538int vop_compat_nmknod(struct vop_nmknod_args *ap);
539int vop_compat_nlink(struct vop_nlink_args *ap);
540int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
541int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
542int vop_compat_nremove(struct vop_nremove_args *ap);
543int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
544int vop_compat_nrename(struct vop_nrename_args *ap);
545
e3332475 546void vx_lock (struct vnode *vp);
5fd012e0 547void vx_unlock (struct vnode *vp);
e3332475 548void vx_get (struct vnode *vp);
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549int vx_get_nonblock (struct vnode *vp);
550void vx_put (struct vnode *vp);
87de5057 551int vget (struct vnode *vp, int lockflag);
597aea93 552void vput (struct vnode *vp);
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553void vhold (struct vnode *);
554void vdrop (struct vnode *);
b153f746 555void vref (struct vnode *vp);
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556void vrele (struct vnode *vp);
557void vsetflags (struct vnode *vp, int flags);
558void vclrflags (struct vnode *vp, int flags);
559
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560/*#define DEBUG_VPUT*/
561#ifdef DEBUG_VPUT
562void debug_vput (struct vnode *vp, const char *filename, int line);
563#define vput(vp) debug_vput(vp, __FILE__, __LINE__)
564#endif
565
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566void vfs_subr_init(void);
567void vfs_mount_init(void);
568void vfs_lock_init(void);
aac0aabd 569void mount_init(struct mount *mp);
5fd012e0 570
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571void vn_syncer_add(struct vnode *, int);
572void vn_syncer_remove(struct vnode *);
50e4012a 573void vn_syncer_thr_create(struct mount *);
bf9f24c1 574void vn_syncer_thr_stop(struct mount *);
50e4012a 575
66a1ddf5 576extern struct vop_ops default_vnode_vops;
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577extern struct vop_ops dead_vnode_vops;
578
579extern struct vop_ops *default_vnode_vops_p;
66a1ddf5 580extern struct vop_ops *dead_vnode_vops_p;
984263bc 581
03d6a592 582#endif /* _KERNEL */
984263bc 583
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584#endif /* _KERNEL || _KERNEL_STRUCTURES */
585#endif /* !_SYS_VNODE_H_ */