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[dragonfly.git] / sys / sys / vnode.h
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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 $
5fd012e0 35 * $DragonFly: src/sys/sys/vnode.h,v 1.25 2004/10/12 19:20:48 dillon Exp $
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36 */
37
38#ifndef _SYS_VNODE_H_
39#define _SYS_VNODE_H_
40
41#include <sys/queue.h>
42#include <sys/lock.h>
43#include <sys/select.h>
44#include <sys/uio.h>
45#include <sys/acl.h>
7ea21ed1 46#include <sys/namecache.h>
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47#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
48#include <sys/thread.h>
49#endif
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50#include <sys/vfsops.h>
51#include <sys/vfscache.h>
77a8676e 52
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53#include <machine/lock.h>
54
55/*
56 * The vnode is the focus of all file activity in UNIX. There is a
57 * unique vnode allocated for each active file, each current directory,
58 * each mounted-on file, text file, and the root.
59 */
60
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61/*
62 * Each underlying filesystem allocates its own private area and hangs
63 * it from v_data. If non-null, this area is freed in getnewvnode().
64 */
65TAILQ_HEAD(buflists, buf);
66
0961aa92 67
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68/*
69 * Reading or writing any of these items requires holding the appropriate lock.
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70 * v_freelist is locked by the global vnode_free_list token.
71 * v_mntvnodes is locked by the global mntvnodes token.
984263bc 72 * v_flag, v_usecount, v_holdcount and v_writecount are
8a8d5d85 73 * locked by the v_interlock token.
984263bc 74 * v_pollinfo is locked by the lock contained inside it.
e4c9c0c8 75 *
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76 * NOTE: XXX v_opencount currently only used by specfs. It should be used
77 * universally.
78 *
79 * NOTE: The v_vnlock pointer is now an embedded lock structure, v_lock.
80 * v_lock is currently locked exclusively for writes but when a
81 * range lock is added later on it will be locked shared for writes
82 * and a range will be exclusively reserved in the rangelock space.
83 * v_lock is currently locked exclusively for directory modifying
84 * operations but when we start locking namespaces it will no longer
85 * be used for that function, only for the actual I/O on the directory.
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86 */
87struct vnode {
88 u_long v_flag; /* vnode flags (see below) */
89 int v_usecount; /* reference count of users */
90 int v_writecount; /* reference count of writers */
91 int v_holdcnt; /* page & buffer references */
e4c9c0c8 92 int v_opencount; /* number of explicit opens */
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93 u_long v_id; /* capability identifier */
94 struct mount *v_mount; /* ptr to vfs we are in */
0961aa92 95 struct vop_ops *v_ops; /* mount, vops, other things */
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96 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
97 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
98 struct buflists v_cleanblkhd; /* clean blocklist head */
99 struct buflists v_dirtyblkhd; /* dirty blocklist head */
100 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
101 long v_numoutput; /* num of writes in progress */
102 enum vtype v_type; /* vnode type */
103 union {
104 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
105 struct socket *vu_socket; /* unix ipc (VSOCK) */
106 struct {
e4c9c0c8 107 udev_t vu_udev; /* device number for attach */
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108 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
109 SLIST_ENTRY(vnode) vu_specnext;
110 } vu_spec;
111 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
112 } v_un;
113 struct nqlease *v_lease; /* Soft reference to lease */
114 daddr_t v_lastw; /* last write (write cluster) */
115 daddr_t v_cstart; /* start block of cluster */
116 daddr_t v_lasta; /* last allocation */
117 int v_clen; /* length of current cluster */
118 struct vm_object *v_object; /* Place to store VM object */
3446c007 119 struct lock v_lock; /* file/dir ops lock */
984263bc 120 enum vtagtype v_tag; /* type of underlying data */
597aea93 121 void *v_data; /* private data for fs */
7ea21ed1 122 struct namecache_list v_namecache; /* associated nc entries */
984263bc 123 struct {
8a8d5d85 124 struct lwkt_token vpi_token; /* lock to protect below */
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125 struct selinfo vpi_selinfo; /* identity of poller(s) */
126 short vpi_events; /* what they are looking for */
127 short vpi_revents; /* what has happened */
128 } v_pollinfo;
29802dbb 129 struct vmresident *v_resident; /* optional vmresident */
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130#ifdef DEBUG_LOCKS
131 const char *filename; /* Source file doing locking */
132 int line; /* Line number doing locking */
133#endif
5fd012e0 134 void *v_xaddr;
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135};
136#define v_mountedhere v_un.vu_mountedhere
137#define v_socket v_un.vu_socket
e4c9c0c8 138#define v_udev v_un.vu_spec.vu_udev
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139#define v_rdev v_un.vu_spec.vu_specinfo
140#define v_specnext v_un.vu_spec.vu_specnext
141#define v_fifoinfo v_un.vu_fifoinfo
142
143#define VN_POLLEVENT(vp, events) \
144 do { \
145 if ((vp)->v_pollinfo.vpi_events & (events)) \
146 vn_pollevent((vp), (events)); \
147 } while (0)
148
149/*
150 * Vnode flags.
151 */
152#define VROOT 0x00001 /* root of its file system */
153#define VTEXT 0x00002 /* vnode is a pure text prototype */
154#define VSYSTEM 0x00004 /* vnode being used by kernel */
155#define VISTTY 0x00008 /* vnode represents a tty */
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156#define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */
157/* open for business 0x00020 */
158/* open for business 0x00040 */
159/* open for business 0x00080 */
160/* open for business 0x00100 */
161/* open for business 0x00200 */
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162#define VBWAIT 0x00400 /* waiting for output to complete */
163/* open for business 0x00800 */
164/* open for business 0x01000 */
165#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
5fd012e0 166#define VINACTIVE 0x04000 /* The vnode is inactive */
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167#define VAGE 0x08000 /* Insert vnode at head of free list */
168#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
169#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
5fd012e0 170#define VRECLAIMED 0x40000 /* This vnode has been destroyed */
984263bc 171#define VFREE 0x80000 /* This vnode is on the freelist */
5fd012e0 172/* open for business 0x100000 */
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173#define VONWORKLST 0x200000 /* On syncer work-list */
174#define VMOUNT 0x400000 /* Mount in progress */
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175#define VOBJDIRTY 0x800000 /* object might be dirty */
176#define VPLACEMARKER 0x1000000 /* dummy vnode placemarker */
984263bc 177
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178/*
179 * vmntvnodescan() flags
180 */
181#define VMSC_GETVP 1
182#define VMSC_GETVX 2
183#define VMSC_REFVP 3
184#define VMSC_NOWAIT 0x10
185
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186/*
187 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
188 * help with write clustering)
189 */
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190#define IO_UNIT 0x0001 /* do I/O as atomic unit */
191#define IO_APPEND 0x0002 /* append write to end */
192#define IO_SYNC 0x0004 /* do I/O synchronously */
193#define IO_NODELOCKED 0x0008 /* underlying node already locked */
194#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
195#define IO_VMIO 0x0020 /* data already in VMIO space */
196#define IO_INVAL 0x0040 /* invalidate after I/O */
197#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
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198#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
199#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
200#define IO_CORE 0x0400 /* I/O is part of core dump */
984263bc 201
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202#define IO_SEQMAX 0x7F /* seq heuristic max value */
203#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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204
205/*
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206 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID,
207 * and SVTX flag bits.
208 *
209 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls.
984263bc 210 */
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211#define VDELETE 040000 /* delete if the file/dir exists */
212#define VCREATE 020000 /* create if the file/dir does not exist */
213#define VEXCL 010000 /* error if the file/dir already exists */
214
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215#define VSUID 04000 /* set user id on execution */
216#define VSGID 02000 /* set group id on execution */
217#define VSVTX 01000 /* save swapped text even after use */
218#define VREAD 00400 /* read, write, execute permissions */
219#define VWRITE 00200
220#define VEXEC 00100
221
222/*
223 * Token indicating no attribute value yet assigned.
224 */
225#define VNOVAL (-1)
226
227/*
228 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
229 */
597aea93 230#define VLKTIMEOUT (hz / 20 + 1)
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231
232#ifdef _KERNEL
233
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234/*
235 * Convert between vnode types and inode formats (since POSIX.1
236 * defines mode word of stat structure in terms of inode formats).
237 */
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238extern enum vtype iftovt_tab[];
239extern int vttoif_tab[];
240#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
241#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
242#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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243
244/*
245 * Flags to various vnode functions.
246 */
247#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
248#define FORCECLOSE 0x0002 /* vflush: force file closure */
249#define WRITECLOSE 0x0004 /* vflush: only close writable files */
250#define DOCLOSE 0x0008 /* vclean: close active files */
251#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
252#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
253
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254#ifdef DIAGNOSTIC
255#define VATTR_NULL(vap) vattr_null(vap)
256#else
257#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
258#endif /* DIAGNOSTIC */
259
260#define NULLVP ((struct vnode *)NULL)
261
262#define VNODEOP_SET(f) \
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263 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops_sysinit, &f); \
264 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_rm_vnodeops_sysinit, &f);
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265
266/*
267 * Global vnode data.
268 */
269extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
21739618 270extern struct namecache *rootncp; /* root (i.e. "/") namecache */
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271extern int desiredvnodes; /* number of vnodes desired */
272extern time_t syncdelay; /* max time to delay syncing data */
273extern time_t filedelay; /* time to delay syncing files */
274extern time_t dirdelay; /* time to delay syncing directories */
275extern time_t metadelay; /* time to delay syncing metadata */
276extern struct vm_zone *namei_zone;
277extern int prtactive; /* nonzero to call vprint() */
278extern struct vattr va_null; /* predefined null vattr structure */
279extern int vfs_ioopt;
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280extern int numvnodes;
281extern int freevnodes;
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282
283/*
284 * Macro/function to check for client cache inconsistency w.r.t. leasing.
285 */
286#define LEASE_READ 0x1 /* Check lease for readers */
287#define LEASE_WRITE 0x2 /* Check lease for modifiers */
288
289
b153f746 290extern void (*lease_updatetime) (int deltat);
984263bc 291
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292#endif /* _KERNEL */
293
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294/*
295 * Mods for extensibility.
296 */
297
298/*
299 * Flags for vdesc_flags:
300 */
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301#define VDESC_MAX_VPS 8
302/* Low order 8 flag bits are reserved for willrele flags for vp arguments. */
303#define VDESC_VP0_WILLRELE 0x00000001
304#define VDESC_VP1_WILLRELE 0x00000002
305#define VDESC_VP2_WILLRELE 0x00000004
306#define VDESC_VP3_WILLRELE 0x00000008
307#define VDESC_VP4_WILLRELE 0x00000010
308#define VDESC_VP5_WILLRELE 0x00000020
309#define VDESC_VP6_WILLRELE 0x00000040
310#define VDESC_VP7_WILLRELE 0x00000080
311#define VDESC_NOMAP_VPP 0x00000100
312#define VDESC_VPP_WILLRELE 0x00000200
313#define VDESC_VP0_WILLUNLOCK 0x00010000
314#define VDESC_VP1_WILLUNLOCK 0x00020000
315#define VDESC_VP2_WILLUNLOCK 0x00040000
316#define VDESC_VP3_WILLUNLOCK 0x00080000
317#define VDESC_VP4_WILLUNLOCK 0x00100000
318#define VDESC_VP5_WILLUNLOCK 0x00200000
319#define VDESC_VP6_WILLUNLOCK 0x00400000
320#define VDESC_VP7_WILLUNLOCK 0x00800000
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321
322/*
323 * VDESC_NO_OFFSET is used to identify the end of the offset list
324 * and in places where no such field exists.
325 */
326#define VDESC_NO_OFFSET -1
327
328/*
329 * This structure describes the vnode operation taking place.
330 */
331struct vnodeop_desc {
332 int vdesc_offset; /* offset in vector--first for speed */
333 char *vdesc_name; /* a readable name for debugging */
334 int vdesc_flags; /* VDESC_* flags */
335
336 /*
337 * These ops are used by bypass routines to map and locate arguments.
338 * Creds and procs are not needed in bypass routines, but sometimes
339 * they are useful to (for example) transport layers.
340 * Nameidata is useful because it has a cred in it.
341 */
342 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
343 int vdesc_vpp_offset; /* return vpp location */
344 int vdesc_cred_offset; /* cred location, if any */
345 int vdesc_proc_offset; /* proc location, if any */
346 int vdesc_componentname_offset; /* if any */
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347};
348
349#ifdef _KERNEL
350/*
351 * A list of all the operation descs.
352 */
353extern struct vnodeop_desc *vnodeop_descs[];
354
355/*
356 * Interlock for scanning list of vnodes attached to a mountpoint
357 */
8a8d5d85 358extern struct lwkt_token mntvnode_token;
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359
360/*
361 * This macro is very helpful in defining those offsets in the vdesc struct.
362 *
363 * This is stolen from X11R4. I ignored all the fancy stuff for
364 * Crays, so if you decide to port this to such a serious machine,
365 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
366 */
597aea93 367#define VOPARG_OFFSET(p_type,field) \
984263bc 368 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 369#define VOPARG_OFFSETOF(s_type,field) \
984263bc 370 VOPARG_OFFSET(s_type*,field)
597aea93 371#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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372 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
373
374
375/*
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376 * This structure is used to configure the new vnodeops vector. The entry
377 * descriptor describes a patricular VOP function while the operations
378 * vector descriptor recursively describes arrays of entry descriptors.
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379 */
380struct vnodeopv_entry_desc {
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381 struct vnodeop_desc *opve_op;
382 int (*opve_func)(struct vop_generic_args *ap);
984263bc 383};
2d3e977e 384
984263bc 385struct vnodeopv_desc {
2d3e977e 386 struct vop_ops **opv_desc_vector; /* vect to allocate/fill*/
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387 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
388};
389
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390struct vnodeopv_node {
391 TAILQ_ENTRY(vnodeopv_node) entry;
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392 struct vop_ops *ops; /* allocated vector */
393 struct vnodeopv_entry_desc *descs; /* null terminated list */
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394};
395
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396#ifdef DEBUG_VFS_LOCKS
397/*
398 * Macros to aid in tracing VFS locking problems. Not totally
399 * reliable since if the process sleeps between changing the lock
400 * state and checking it with the assert, some other process could
401 * change the state. They are good enough for debugging a single
402 * filesystem using a single-threaded test. I find that 'cvs co src'
403 * is a pretty good test.
404 */
405
406/*
407 * [dfr] Kludge until I get around to fixing all the vfs locking.
408 */
409#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
410 || (vp)->v_tag == VT_MFS \
411 || (vp)->v_tag == VT_NFS \
412 || (vp)->v_tag == VT_LFS \
413 || (vp)->v_tag == VT_ISOFS \
414 || (vp)->v_tag == VT_MSDOSFS)
415
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416#define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str)
417#define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str);
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418
419#define ASSERT_VOP_ELOCKED(vp, str) \
420do { \
421 struct vnode *_vp = (vp); \
422 \
423 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 424 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
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425 panic("%s: %p is not exclusive locked but should be", \
426 str, _vp); \
427} while (0)
428
429#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
430do { \
431 struct vnode *_vp = (vp); \
432 \
433 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 434 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
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435 panic("%s: %p is not exclusive locked by another proc", \
436 str, _vp); \
437} while (0)
438
439#define ASSERT_VOP_SLOCKED(vp, str) \
440do { \
441 struct vnode *_vp = (vp); \
442 \
443 if (_vp && IS_LOCKING_VFS(_vp) && \
444 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
445 panic("%s: %p is not locked shared but should be", \
446 str, _vp); \
447} while (0)
448
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449void assert_vop_locked(struct vnode *vp, const char *str);
450void assert_vop_unlocked(struct vnode *vp, const char *str);
451
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452#else
453
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454#define ASSERT_VOP_LOCKED(vp, str)
455#define ASSERT_VOP_UNLOCKED(vp, str)
984263bc 456
4f322a84 457#endif /* DEBUG_VFS_LOCKS */
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458
459/*
460 * VOCALL calls an op given an ops vector. We break it out because BSD's
461 * vclean changes the ops vector and then wants to call ops with the old
462 * vector.
463 */
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464
465typedef int (*vocall_func_t)(struct vop_generic_args *);
466
984263bc 467/*
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468 * This call executes the vops vector for the offset stored in the ap's
469 * descriptor of the passed vops rather then the one related to the
470 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
471 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
472 * vector function).
984263bc 473 */
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474#define VOCALL(vops, ap) \
475 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->vdesc_offset)))(ap)
476
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477#define VDESC(OP) (& __CONCAT(OP,_desc))
478#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
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479
480/*
481 * VMIO support inline
482 */
483
484extern int vmiodirenable;
485
486static __inline int
487vn_canvmio(struct vnode *vp)
488{
489 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
490 return(TRUE);
491 return(FALSE);
492}
493
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494/*
495 * Public vnode manipulation functions.
496 */
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497struct file;
498struct mount;
499struct nameidata;
500struct ostat;
501struct proc;
dadab5e9 502struct thread;
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503struct stat;
504struct nstat;
505struct ucred;
506struct uio;
507struct vattr;
508struct vnode;
509struct vop_bwrite_args;
510
b153f746 511extern int (*lease_check_hook) (struct vop_lease_args *);
984263bc 512
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513void addaliasu (struct vnode *vp, udev_t nvp_udev);
514int v_associate_rdev(struct vnode *vp, dev_t dev);
515void v_release_rdev(struct vnode *vp);
b153f746 516int bdevvp (dev_t dev, struct vnode **vpp);
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517void cvtstat (struct stat *st, struct ostat *ost);
518void cvtnstat (struct stat *sb, struct nstat *nsb);
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519struct vnode *allocvnode(int lktimeout, int lkflags);
520struct vnode *allocvnode_placemarker(void);
521void freevnode_placemarker(struct vnode *);
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522int getnewvnode (enum vtagtype tag, struct mount *mp, struct vop_ops *ops,
523 struct vnode **vpp, int timo, int lkflags);
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524int lease_check (struct vop_lease_args *ap);
525int spec_vnoperate (struct vop_generic_args *);
526int speedup_syncer (void);
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527void vattr_null (struct vattr *vap);
528int vcount (struct vnode *vp);
b153f746 529int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
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530void vfs_add_vnodeops_sysinit (const void *);
531void vfs_rm_vnodeops_sysinit (const void *);
532void vfs_add_vnodeops(struct vop_ops **, struct vnodeopv_entry_desc *);
533void vfs_rm_vnodeops(struct vop_ops **);
b153f746 534int vflush (struct mount *mp, int rootrefs, int flags);
5fd012e0 535int vmntvnodescan(struct mount *mp, int flags,
41a01a4d 536 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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537 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data),
538 void *data);
539void insmntque(struct vnode *vp, struct mount *mp);
41a01a4d 540
5fd012e0 541void vclean (struct vnode *vp, int flags, struct thread *td);
597aea93 542void vgone (struct vnode *vp);
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543int vinvalbuf (struct vnode *vp, int save,
544 struct thread *td, int slpflag, int slptimeo);
545int vtruncbuf (struct vnode *vp, struct thread *td,
546 off_t length, int blksize);
547void vprint (char *label, struct vnode *vp);
5fd012e0 548int vrecycle (struct vnode *vp, struct thread *td);
597aea93 549int vn_close (struct vnode *vp, int flags, struct thread *td);
b153f746 550int vn_isdisk (struct vnode *vp, int *errp);
5fd012e0 551int vn_lock (struct vnode *vp, int flags, struct thread *td);
984263bc 552#ifdef DEBUG_LOCKS
5fd012e0 553int debug_vn_lock (struct vnode *vp, int flags, struct thread *td,
b153f746 554 const char *filename, int line);
5fd012e0 555#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
984263bc 556#endif
b310dfc4 557
b310dfc4 558int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
597aea93 559int vn_open (struct nameidata *ndp, int fmode, int cmode);
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560void vn_pollevent (struct vnode *vp, int events);
561void vn_pollgone (struct vnode *vp);
562int vn_pollrecord (struct vnode *vp, struct thread *td, int events);
563int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 564 int len, off_t offset, enum uio_seg segflg, int ioflg,
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565 struct ucred *cred, int *aresid, struct thread *td);
566int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 567 int len, off_t offset, enum uio_seg segflg, int ioflg,
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568 struct ucred *cred, int *aresid, struct thread *td);
569int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td);
570dev_t vn_todev (struct vnode *vp);
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571int vfs_object_create (struct vnode *vp, struct thread *td);
572void vfs_timestamp (struct timespec *);
597aea93 573int vn_writechk (struct vnode *vp);
b153f746 574int vop_stdbwrite (struct vop_bwrite_args *ap);
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575int vop_stdislocked (struct vop_islocked_args *ap);
576int vop_stdlock (struct vop_lock_args *ap);
3446c007 577int vop_stdrlock (struct vop_lock_args *ap);
2d3e977e 578int vop_stdunlock (struct vop_unlock_args *ap);
417215fe 579int vop_noresolve(struct vop_resolve_args *ap);
2d3e977e 580int vop_nopoll (struct vop_poll_args *ap);
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581int vop_stdpathconf (struct vop_pathconf_args *ap);
582int vop_stdpoll (struct vop_poll_args *ap);
583int vop_stdrevoke (struct vop_revoke_args *ap);
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584int vop_eopnotsupp (struct vop_generic_args *ap);
585int vop_ebadf (struct vop_generic_args *ap);
586int vop_einval (struct vop_generic_args *ap);
587int vop_enotty (struct vop_generic_args *ap);
588int vop_defaultop (struct vop_generic_args *ap);
589int vop_null (struct vop_generic_args *ap);
590int vop_panic (struct vop_generic_args *ap);
591int vop_stdcreatevobject (struct vop_createvobject_args *ap);
592int vop_stddestroyvobject (struct vop_destroyvobject_args *ap);
593int vop_stdgetvobject (struct vop_getvobject_args *ap);
594
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595int vx_lock (struct vnode *vp);
596void vx_unlock (struct vnode *vp);
597int vx_get (struct vnode *vp);
598int vx_get_nonblock (struct vnode *vp);
599void vx_put (struct vnode *vp);
600int vget (struct vnode *vp, int lockflag, struct thread *td);
597aea93 601void vput (struct vnode *vp);
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602void vhold (struct vnode *);
603void vdrop (struct vnode *);
b153f746 604void vref (struct vnode *vp);
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605void vrele (struct vnode *vp);
606void vsetflags (struct vnode *vp, int flags);
607void vclrflags (struct vnode *vp, int flags);
608
609void vfs_subr_init(void);
610void vfs_mount_init(void);
611void vfs_lock_init(void);
612void vfs_sync_init(void);
613
614void vn_syncer_add_to_worklist(struct vnode *, int);
615void vnlru_proc_wait(void);
616
984263bc 617
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618extern struct vop_ops *default_vnode_vops;
619extern struct vop_ops *spec_vnode_vops;
0961aa92 620extern struct vop_ops *dead_vnode_vops;
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621
622#endif /* _KERNEL */
623
624#endif /* !_SYS_VNODE_H_ */