kernel - Refactor inum stat data for sockets
[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.
2c64e990 13 * 3. Neither the name of the University nor the names of its contributors
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)vnode.h 8.7 (Berkeley) 2/4/94
30 * $FreeBSD: src/sys/sys/vnode.h,v 1.111.2.19 2002/12/29 18:19:53 dillon Exp $
31 */
32
33#ifndef _SYS_VNODE_H_
34#define _SYS_VNODE_H_
35
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36#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
37
38#ifndef _SYS_QUEUE_H_
984263bc 39#include <sys/queue.h>
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40#endif
41#ifndef _SYS_LOCK_H_
984263bc 42#include <sys/lock.h>
03d6a592 43#endif
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44#ifndef _SYS_EVENT_H_
45#include <sys/event.h>
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46#endif
47#ifndef _SYS_BIOTRACK_H_
81b5c339 48#include <sys/biotrack.h>
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49#endif
50#ifndef _SYS_UIO_H_
984263bc 51#include <sys/uio.h>
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52#endif
53#ifndef _SYS_ACL_H_
984263bc 54#include <sys/acl.h>
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55#endif
56#ifndef _SYS_NAMECACHE_H_
7ea21ed1 57#include <sys/namecache.h>
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58#endif
59#ifndef _SYS_THREAD_H_
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60#include <sys/thread.h>
61#endif
03d6a592 62#ifndef _SYS_VFSOPS_H_
0961aa92 63#include <sys/vfsops.h>
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64#endif
65#ifndef _SYS_VFSCACHE_H_
0961aa92 66#include <sys/vfscache.h>
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67#endif
68#ifndef _SYS_TREE_H_
6bae6177 69#include <sys/tree.h>
03d6a592 70#endif
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71#ifndef _SYS_SYSLINK_RPC_H_
72#include <sys/syslink_rpc.h>
31bd717a 73#endif
03d6a592 74#ifndef _MACHINE_LOCK_H_
984263bc 75#include <machine/lock.h>
03d6a592 76#endif
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77
78/*
79 * The vnode is the focus of all file activity in UNIX. There is a
80 * unique vnode allocated for each active file, each current directory,
81 * each mounted-on file, text file, and the root.
82 */
83
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84/*
85 * Each underlying filesystem allocates its own private area and hangs
86 * it from v_data. If non-null, this area is freed in getnewvnode().
87 */
88TAILQ_HEAD(buflists, buf);
89
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90/*
91 * Struct for mount options to printable formats.
92 */
93struct mountctl_opt {
94 int o_opt;
95 const char *o_name;
96};
97
984263bc 98/*
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99 * The vnode infrastructure is being reorgranized. Most reference-related
100 * fields are locked by the BGL, and most file I/O related operations and
101 * vnode teardown functions are locked by the vnode lock.
102 *
103 * File read operations require a shared lock, file write operations require
104 * an exclusive lock. Most directory operations (read or write) currently
105 * require an exclusive lock due to the side effects stored in the directory
106 * inode (which we intend to fix).
107 *
108 * File reads and writes are further protected by a range lock. The intention
109 * is to be able to break I/O operations down into more easily managed pieces
110 * so vm_page arrays can be passed through rather then UIOs. This work will
111 * occur in multiple stages. The range locks will also eventually be used to
112 * deal with clustered cache coherency issues and, more immediately, to
113 * protect operations associated with the kernel-managed journaling module.
e4c9c0c8 114 *
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115 * v_lastwrite_ts is set along with VLASTWRITETS when a file is mmap()'d
116 * SHARED+RW. VM page flushes, which can be delayed substantially from when
117 * the page was actually modified, will use the v_lastwrite_ts if available.
723be147 118 *
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119 * NOTE: Certain fields within the vnode structure requires v_token to be
120 * held. The vnode's normal lock need not be held when accessing
121 * these fields as long as the vnode is deterministically referenced
122 * (i.e. can't be ripped out from under the caller). This is typical
123 * for code paths based on descriptors or file pointers, but not for
124 * backdoor code paths that come in via the buffer cache.
6de32ba2 125 *
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126 * v_rbclean_tree
127 * v_rbdirty_tree
128 * v_rbhash_tree
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129 * v_pollinfo
130 *
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131 * NOTE: The vnode operations vector, v_ops, is a double-indirect that
132 * typically points to &v_mount->mnt_vn_use_ops. We use a double
133 * pointer because mnt_vn_use_ops may change dynamically when e.g.
134 * journaling is turned on or off.
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135 *
136 * NOTE: v_filesize is currently only applicable when a VM object is
137 * associated with the vnode. Otherwise it will be set to NOOFFSET.
f63911bf 138 *
aac0aabd 139 * NOTE: The following fields require a spin or token lock. Note that
b12defdc 140 * additional subsystems may use v_token or v_spin for other
aac0aabd 141 * purposes, e.g. vfs/fifofs/fifo_vnops.c
f63911bf 142 *
b12defdc 143 * v_namecache v_spin
f63911bf 144 * v_rb* v_token
984263bc 145 */
6bae6177 146RB_HEAD(buf_rb_tree, buf);
1f1ea522 147RB_HEAD(buf_rb_hash, buf);
6bae6177 148
984263bc 149struct vnode {
b12defdc 150 struct spinlock v_spin;
6b008938 151 int v_flag; /* vnode flags (see below) */
81b5c339 152 int v_writecount;
e4c9c0c8 153 int v_opencount; /* number of explicit opens */
3c37c940 154 int v_auxrefs; /* auxiliary references */
ee173d09 155 int v_refcnt;
d84f6fa1 156 int v_pbuf_count; /* (device nodes only) */
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157 struct bio_track v_track_read; /* track I/O's in progress */
158 struct bio_track v_track_write; /* track I/O's in progress */
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159 struct mount *v_mount; /* ptr to vfs we are in */
160 struct vop_ops **v_ops; /* vnode operations vector */
ee173d09 161 TAILQ_ENTRY(vnode) v_list; /* vnode act/inact/cache/free */
984263bc 162 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
ee173d09 163 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
6bae6177 164 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */
54df1108 165 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */
1f1ea522 166 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */
984263bc 167 enum vtype v_type; /* vnode type */
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168 int16_t v_act; /* use heuristic */
169 int16_t v_state; /* active/free/cached */
984263bc 170 union {
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171 struct socket *vu_socket; /* unix ipc (VSOCK) */
172 struct {
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173 int vu_umajor; /* device number for attach */
174 int vu_uminor;
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175 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */
176 SLIST_ENTRY(vnode) vu_cdevnext;
177 } vu_cdev;
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178 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
179 } v_un;
57f7b636 180 off_t v_filesize; /* file EOF or NOOFFSET */
54078292 181 off_t v_lazyw; /* lazy write iterator */
984263bc 182 struct vm_object *v_object; /* Place to store VM object */
3446c007 183 struct lock v_lock; /* file/dir ops lock */
008b2675 184 struct lwkt_token v_token; /* (see above) */
984263bc 185 enum vtagtype v_tag; /* type of underlying data */
597aea93 186 void *v_data; /* private data for fs */
f63911bf 187 struct namecache_list v_namecache; /* (S) associated nc entries */
984263bc 188 struct {
5b22f1a7 189 struct kqinfo vpi_kqinfo; /* identity of poller(s) */
984263bc 190 } v_pollinfo;
29802dbb 191 struct vmresident *v_resident; /* optional vmresident */
5fae1203 192 struct mount *v_pfsmp; /* real mp for pfs/nullfs mt */
723be147 193 struct timespec v_lastwrite_ts; /* async mmap flush ts */
984263bc 194};
984263bc 195#define v_socket v_un.vu_socket
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196#define v_umajor v_un.vu_cdev.vu_umajor
197#define v_uminor v_un.vu_cdev.vu_uminor
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198#define v_rdev v_un.vu_cdev.vu_cdevinfo
199#define v_cdevnext v_un.vu_cdev.vu_cdevnext
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200#define v_fifoinfo v_un.vu_fifoinfo
201
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202/*
203 * Vnode flags.
204 */
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205#define VROOT 0x00000001 /* root of its file system */
206#define VTEXT 0x00000002 /* vnode is a pure text prototype */
207#define VSYSTEM 0x00000004 /* vnode being used by kernel */
208#define VISTTY 0x00000008 /* vnode represents a tty */
209#define VCTTYISOPEN 0x00000010 /* controlling terminal tty is open */
210#define VCKPT 0x00000020 /* checkpoint-restored vnode */
d32579c3 211#define VKVABIO 0x00000040 /* strategy func support KVABIO API */
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212#define VMAYHAVELOCKS 0x00000080 /* maybe posix or flock locks on vp */
213#define VPFSROOT 0x00000100 /* may be a pseudo filesystem root */
214/* open for business 0x00000200 */
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215#define VAGE0 0x00000400 /* Age count for recycling - 2 bits */
216#define VAGE1 0x00000800 /* Age count for recycling - 2 bits */
ee173d09 217/* open for business 0x00001000 */
3e35303e 218#define VOBJBUF 0x00002000 /* Allocate buffers in VM object */
ee173d09 219#define VINACTIVE 0x00004000 /* ran VOP_INACTIVE */
0e8bd897 220/* open for business 0x00008000 */
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221/* open for business 0x00010000 */
222/* open for business 0x00020000 */
3e35303e 223#define VRECLAIMED 0x00040000 /* This vnode has been destroyed */
fa4a12c4 224#define VLASTWRITETS 0x00080000 /* VLASTWRITETS updated */
c0885fab 225#define VNOTSEEKABLE 0x00100000 /* rd/wr ignores file offset */
3e35303e 226#define VONWORKLST 0x00200000 /* On syncer work-list */
bf9f24c1 227#define VISDIRTY 0x00400000 /* inode dirty from VFS */
3e35303e 228#define VOBJDIRTY 0x00800000 /* object might be dirty */
e9b56058 229#define VSWAPCACHE 0x01000000 /* enable swapcache */
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230/* open for business 0x02000000 */
231/* open for business 0x04000000 */
2aff4871 232
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233/*
234 * v_state flags (v_state is interlocked by v_spin and vfs_spin)
235 */
236#define VS_CACHED 0
237#define VS_ACTIVE 1
238#define VS_INACTIVE 2
239#define VS_DYING 3
240
241/*
242 * v_refcnt uses bit 30 to flag that 1->0 transitions require finalization
243 * (actual deactivation) and bit 31 to indicate that deactivation is in
244 * progress.
245 *
246 * The VREFCNT() macro returns a negative number if the vnode is undergoing
247 * termination (value should not be interpreted beyond being negative),
248 * zero if it is cached and has no references, or a positive number
249 * indicating the number of refs.
250 */
251#define VREF_TERMINATE 0x80000000 /* termination in progress */
252#define VREF_FINALIZE 0x40000000 /* deactivate on last vrele */
253#define VREF_MASK 0xBFFFFFFF /* includes VREF_TERMINATE */
254
255#define VREFCNT(vp) ((int)((vp)->v_refcnt & VREF_MASK))
256
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257/*
258 * vmntvnodescan() flags
259 */
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260#define VMSC_GETVP 0x01
261#define VMSC_GETVX 0x02
5fd012e0 262#define VMSC_NOWAIT 0x10
19b97e01 263#define VMSC_ONEPASS 0x20
5fd012e0 264
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265/*
266 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
267 * help with write clustering)
268 */
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269#define IO_UNIT 0x0001 /* do I/O as atomic unit */
270#define IO_APPEND 0x0002 /* append write to end */
271#define IO_SYNC 0x0004 /* do I/O synchronously */
272#define IO_NODELOCKED 0x0008 /* underlying node already locked */
273#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
274#define IO_VMIO 0x0020 /* data already in VMIO space */
275#define IO_INVAL 0x0040 /* invalidate after I/O */
276#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
597aea93 277#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
cb63d1bc 278#define IO_RECURSE 0x0200 /* possibly device-recursive (vn) */
597aea93 279#define IO_CORE 0x0400 /* I/O is part of core dump */
a28fbe62 280#define IO_NRDELAY 0x0800 /* do not block on disk reads */
984263bc 281
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282#define IO_SEQMAX 0x7F /* seq heuristic max value */
283#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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284
285/*
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286 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
287 * and SVTX flag bits.
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288 */
289#define VSUID 04000 /* set user id on execution */
290#define VSGID 02000 /* set group id on execution */
291#define VSVTX 01000 /* save swapped text even after use */
292#define VREAD 00400 /* read, write, execute permissions */
293#define VWRITE 00200
294#define VEXEC 00100
295
296/*
297 * Token indicating no attribute value yet assigned.
298 */
299#define VNOVAL (-1)
300
301/*
302 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
303 */
597aea93 304#define VLKTIMEOUT (hz / 20 + 1)
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305
306#ifdef _KERNEL
307
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308/*
309 * Convert between vnode types and inode formats (since POSIX.1
310 * defines mode word of stat structure in terms of inode formats).
311 */
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312extern enum vtype iftovt_tab[];
313extern int vttoif_tab[];
314#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
315#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
316#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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317
318/*
319 * Flags to various vnode functions.
320 */
321#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
322#define FORCECLOSE 0x0002 /* vflush: force file closure */
323#define WRITECLOSE 0x0004 /* vflush: only close writable files */
324#define DOCLOSE 0x0008 /* vclean: close active files */
325#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
984263bc 326
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327#ifdef DIAGNOSTIC
328#define VATTR_NULL(vap) vattr_null(vap)
329#else
330#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
331#endif /* DIAGNOSTIC */
332
333#define NULLVP ((struct vnode *)NULL)
334
335#define VNODEOP_SET(f) \
66a1ddf5 336 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \
e8b301fb 337 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f)
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338
339/*
340 * Global vnode data.
341 */
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342struct objcache;
343
984263bc 344extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
28623bf9 345extern struct nchandle rootnch; /* root (i.e. "/") namecache */
9629eb35 346extern int maxvnodes; /* nominal maximum number of vnodes */
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347extern time_t syncdelay; /* max time to delay syncing data */
348extern time_t filedelay; /* time to delay syncing files */
349extern time_t dirdelay; /* time to delay syncing directories */
350extern time_t metadelay; /* time to delay syncing metadata */
70aac194 351extern struct objcache *namei_oc;
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352extern int prtactive; /* nonzero to call vprint() */
353extern struct vattr va_null; /* predefined null vattr structure */
5fd012e0 354extern int numvnodes;
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355extern int inactivevnodes;
356extern int activevnodes;
984263bc 357
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358/*
359 * This macro is very helpful in defining those offsets in the vdesc struct.
360 *
361 * This is stolen from X11R4. I ignored all the fancy stuff for
362 * Crays, so if you decide to port this to such a serious machine,
363 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
364 */
597aea93 365#define VOPARG_OFFSET(p_type,field) \
984263bc 366 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 367#define VOPARG_OFFSETOF(s_type,field) \
984263bc 368 VOPARG_OFFSET(s_type*,field)
597aea93 369#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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370 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
371
625ddaba 372typedef int (*vnodeopv_entry_t)(struct vop_generic_args *);
984263bc 373
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374/*
375 * VOCALL calls an op given an ops vector. We break it out because BSD's
376 * vclean changes the ops vector and then wants to call ops with the old
377 * vector.
378 */
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379
380typedef int (*vocall_func_t)(struct vop_generic_args *);
381
984263bc 382/*
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383 * This call executes the vops vector for the offset stored in the ap's
384 * descriptor of the passed vops rather then the one related to the
385 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
386 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
387 * vector function).
984263bc 388 */
0961aa92 389#define VOCALL(vops, ap) \
31bd717a 390 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap)
0961aa92 391
597aea93 392#define VDESC(OP) (& __CONCAT(OP,_desc))
984263bc 393
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394/*
395 * Public vnode manipulation functions.
396 */
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397struct file;
398struct mount;
fad57d0e 399struct nlookupdata;
984263bc 400struct proc;
dadab5e9 401struct thread;
984263bc 402struct stat;
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403struct ucred;
404struct uio;
405struct vattr;
406struct vnode;
50e4012a 407struct syncer_ctx;
984263bc 408
a8873631 409struct vnode *getsynthvnode(const char *devname);
0e9b9130 410void addaliasu (struct vnode *vp, int x, int y);
b13267a5 411int v_associate_rdev(struct vnode *vp, cdev_t dev);
e4c9c0c8 412void v_release_rdev(struct vnode *vp);
b13267a5 413int bdevvp (cdev_t dev, struct vnode **vpp);
5fd012e0 414struct vnode *allocvnode(int lktimeout, int lkflags);
62ae46c9 415void allocvnode_gc(void);
3c37c940 416int freesomevnodes(int count);
6ddb7618 417int getnewvnode (enum vtagtype tag, struct mount *mp,
3446c007 418 struct vnode **vpp, int timo, int lkflags);
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419int getspecialvnode (enum vtagtype tag, struct mount *mp,
420 struct vop_ops **ops, struct vnode **vpp, int timo,
421 int lkflags);
cf6a53ca 422void speedup_syncer (struct mount *mp);
3b0783db 423int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, struct ucred *);
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424void vattr_null (struct vattr *vap);
425int vcount (struct vnode *vp);
b13267a5 426int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp);
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427void vfs_nadd_vnodeops_sysinit (void *);
428void vfs_nrm_vnodeops_sysinit (void *);
429void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
430void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **);
b153f746 431int vflush (struct mount *mp, int rootrefs, int flags);
bf9f24c1 432
5fd012e0 433int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 434 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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435 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
436 void *data);
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437int vsyncscan(struct mount *mp, int flags,
438 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
439 void *data);
0f79f6b2 440void vclrisdirty(struct vnode *vp);
fd2da346 441void vclrobjdirty(struct vnode *vp);
0f79f6b2 442void vsetisdirty(struct vnode *vp);
fd2da346 443void vsetobjdirty(struct vnode *vp);
bf9f24c1 444
5fd012e0 445void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 446
3c37c940 447void vclean_vxlocked (struct vnode *vp, int flags);
cf683bae 448void vclean_unlocked (struct vnode *vp);
3c37c940 449void vgone_vxlocked (struct vnode *vp);
b8477cda 450int vrevoke (struct vnode *vp, struct ucred *cred);
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451int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo);
452int vtruncbuf (struct vnode *vp, off_t length, int blksize);
8452310f 453void vnode_pager_setsize (struct vnode *, vm_ooffset_t);
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454int nvtruncbuf (struct vnode *vp, off_t length, int blksize, int boff,
455 int trivial);
8452310f 456int nvextendbuf(struct vnode *vp, off_t olength, off_t nlength,
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457 int oblksize, int nblksize,
458 int oboff, int nboff, int trivial);
459void nvnode_pager_setsize (struct vnode *vp, off_t length,
460 int blksize, int boff);
4e0ecc94 461int vfsync(struct vnode *vp, int waitfor, int passes,
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462 int (*checkdef)(struct buf *),
463 int (*waitoutput)(struct vnode *, struct thread *));
b0d18f7d 464int vinitvmio(struct vnode *vp, off_t filesize, int blksize, int boff);
b153f746 465void vprint (char *label, struct vnode *vp);
87de5057 466int vrecycle (struct vnode *vp);
2ec4b00d 467int vmaxiosize (struct vnode *vp);
81b5c339 468void vn_strategy(struct vnode *vp, struct bio *bio);
c504e38e 469int vn_cache_strategy(struct vnode *vp, struct bio *bio);
3596743e 470int vn_close (struct vnode *vp, int flags, struct file *fp);
22a90887 471void vn_gone (struct vnode *vp);
b153f746 472int vn_isdisk (struct vnode *vp, int *errp);
a11aaa81 473int vn_islocked (struct vnode *vp);
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474int vn_islocked_unlock (struct vnode *vp);
475void vn_islocked_relock (struct vnode *vp, int vpls);
ead16d5b 476int vn_lock (struct vnode *vp, int flags);
a11aaa81 477void vn_unlock (struct vnode *vp);
ead16d5b 478
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479/*#define DEBUG_VN_UNLOCK*/
480#ifdef DEBUG_VN_UNLOCK
481void debug_vn_unlock (struct vnode *vp,
482 const char *filename, int line);
483#define vn_unlock(vp) debug_vn_unlock(vp, __FILE__, __LINE__)
484#endif
485
5d72d6ed 486int vn_get_namelen(struct vnode *, int *);
fad57d0e 487void vn_setspecops (struct file *fp);
5b4cfb7e 488int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf, int guess);
fad57d0e 489int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode);
a8873631 490int vn_opendisk (const char *devname, int fmode, struct vnode **vpp);
b153f746 491int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 492 int len, off_t offset, enum uio_seg segflg, int ioflg,
87de5057 493 struct ucred *cred, int *aresid);
b153f746 494int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 495 int len, off_t offset, enum uio_seg segflg, int ioflg,
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496 struct ucred *cred, int *aresid);
497int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred);
b13267a5 498cdev_t vn_todev (struct vnode *vp);
b153f746 499void vfs_timestamp (struct timespec *);
dad088a5 500size_t vfs_flagstostr(int flags, const struct mountctl_opt *optp, char *buf, size_t len, int *errorp);
349433c9 501void vn_mark_atime(struct vnode *vp, struct thread *td);
fd74079f 502int vfs_inodehashsize(void);
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503int vn_writechk (struct vnode *vp, struct nchandle *nch);
504int ncp_writechk(struct nchandle *nch);
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505int vop_stdopen (struct vop_open_args *ap);
506int vop_stdclose (struct vop_close_args *ap);
177403a9 507int vop_stdmountctl(struct vop_mountctl_args *ap);
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508int vop_stdgetpages(struct vop_getpages_args *ap);
509int vop_stdputpages(struct vop_putpages_args *ap);
349433c9 510int vop_stdmarkatime(struct vop_markatime_args *ap);
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511int vop_stdnoread(struct vop_read_args *ap);
512int vop_stdnowrite(struct vop_write_args *ap);
2d3e977e 513int vop_stdpathconf (struct vop_pathconf_args *ap);
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514int vop_eopnotsupp (struct vop_generic_args *ap);
515int vop_ebadf (struct vop_generic_args *ap);
516int vop_einval (struct vop_generic_args *ap);
517int vop_enotty (struct vop_generic_args *ap);
518int vop_defaultop (struct vop_generic_args *ap);
519int vop_null (struct vop_generic_args *ap);
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520int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t,
521 const char *);
b153f746 522
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523int vop_compat_nresolve(struct vop_nresolve_args *ap);
524int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap);
525int vop_compat_ncreate(struct vop_ncreate_args *ap);
526int vop_compat_nmkdir(struct vop_nmkdir_args *ap);
527int vop_compat_nmknod(struct vop_nmknod_args *ap);
528int vop_compat_nlink(struct vop_nlink_args *ap);
529int vop_compat_nsymlink(struct vop_nsymlink_args *ap);
530int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap);
531int vop_compat_nremove(struct vop_nremove_args *ap);
532int vop_compat_nrmdir(struct vop_nrmdir_args *ap);
533int vop_compat_nrename(struct vop_nrename_args *ap);
534
e3332475 535void vx_lock (struct vnode *vp);
5fd012e0 536void vx_unlock (struct vnode *vp);
e3332475 537void vx_get (struct vnode *vp);
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538int vx_get_nonblock (struct vnode *vp);
539void vx_put (struct vnode *vp);
87de5057 540int vget (struct vnode *vp, int lockflag);
597aea93 541void vput (struct vnode *vp);
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542void vhold (struct vnode *);
543void vdrop (struct vnode *);
b153f746 544void vref (struct vnode *vp);
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545void vrele (struct vnode *vp);
546void vsetflags (struct vnode *vp, int flags);
547void vclrflags (struct vnode *vp, int flags);
548
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549/*#define DEBUG_VPUT*/
550#ifdef DEBUG_VPUT
551void debug_vput (struct vnode *vp, const char *filename, int line);
552#define vput(vp) debug_vput(vp, __FILE__, __LINE__)
553#endif
554
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555void vfs_subr_init(void);
556void vfs_mount_init(void);
557void vfs_lock_init(void);
aac0aabd 558void mount_init(struct mount *mp);
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559void synchronizevnodecount(void);
560int countcachedvnodes(void);
561int countcachedandinactivevnodes(void);
5fd012e0 562
77912481 563void vn_syncer_add(struct vnode *, int);
f4428f2f 564void vn_syncer_remove(struct vnode *, int);
50e4012a 565void vn_syncer_thr_create(struct mount *);
bf9f24c1 566void vn_syncer_thr_stop(struct mount *);
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567void vn_syncer_one(struct mount *);
568long vn_syncer_count(struct mount *);
50e4012a 569
66a1ddf5 570extern struct vop_ops default_vnode_vops;
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571extern struct vop_ops dead_vnode_vops;
572
573extern struct vop_ops *default_vnode_vops_p;
66a1ddf5 574extern struct vop_ops *dead_vnode_vops_p;
984263bc 575
03d6a592 576#endif /* _KERNEL */
984263bc 577
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578#endif /* _KERNEL || _KERNEL_STRUCTURES */
579#endif /* !_SYS_VNODE_H_ */