Since ip_input() truncates the packet to ip->ip_len prior to entering the
[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 $
0961aa92 35 * $DragonFly: src/sys/sys/vnode.h,v 1.20 2004/08/17 18:57:32 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.
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75 *
76 * XXX note: v_opencount currently only used by specfs. It should be used
77 * universally.
984263bc 78 */
0961aa92 79
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80struct vnode {
81 u_long v_flag; /* vnode flags (see below) */
82 int v_usecount; /* reference count of users */
83 int v_writecount; /* reference count of writers */
84 int v_holdcnt; /* page & buffer references */
e4c9c0c8 85 int v_opencount; /* number of explicit opens */
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86 u_long v_id; /* capability identifier */
87 struct mount *v_mount; /* ptr to vfs we are in */
0961aa92 88 struct vop_ops *v_ops; /* mount, vops, other things */
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89 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
90 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
91 struct buflists v_cleanblkhd; /* clean blocklist head */
92 struct buflists v_dirtyblkhd; /* dirty blocklist head */
93 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
94 long v_numoutput; /* num of writes in progress */
95 enum vtype v_type; /* vnode type */
96 union {
97 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
98 struct socket *vu_socket; /* unix ipc (VSOCK) */
99 struct {
e4c9c0c8 100 udev_t vu_udev; /* device number for attach */
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101 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
102 SLIST_ENTRY(vnode) vu_specnext;
103 } vu_spec;
104 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
105 } v_un;
106 struct nqlease *v_lease; /* Soft reference to lease */
107 daddr_t v_lastw; /* last write (write cluster) */
108 daddr_t v_cstart; /* start block of cluster */
109 daddr_t v_lasta; /* last allocation */
110 int v_clen; /* length of current cluster */
111 struct vm_object *v_object; /* Place to store VM object */
41a01a4d 112 lwkt_token_t v_interlock; /* lock on usecount and flag */
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113 struct lock *v_vnlock; /* used for non-locking fs's */
114 enum vtagtype v_tag; /* type of underlying data */
597aea93 115 void *v_data; /* private data for fs */
7ea21ed1 116 struct namecache_list v_namecache; /* associated nc entries */
984263bc 117 struct {
8a8d5d85 118 struct lwkt_token vpi_token; /* lock to protect below */
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119 struct selinfo vpi_selinfo; /* identity of poller(s) */
120 short vpi_events; /* what they are looking for */
121 short vpi_revents; /* what has happened */
122 } v_pollinfo;
41a01a4d 123 struct thread *v_vxthread; /* thread owning VXLOCK */
29802dbb 124 struct vmresident *v_resident; /* optional vmresident */
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125#ifdef DEBUG_LOCKS
126 const char *filename; /* Source file doing locking */
127 int line; /* Line number doing locking */
128#endif
129};
130#define v_mountedhere v_un.vu_mountedhere
131#define v_socket v_un.vu_socket
e4c9c0c8 132#define v_udev v_un.vu_spec.vu_udev
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133#define v_rdev v_un.vu_spec.vu_specinfo
134#define v_specnext v_un.vu_spec.vu_specnext
135#define v_fifoinfo v_un.vu_fifoinfo
136
137#define VN_POLLEVENT(vp, events) \
138 do { \
139 if ((vp)->v_pollinfo.vpi_events & (events)) \
140 vn_pollevent((vp), (events)); \
141 } while (0)
142
143/*
144 * Vnode flags.
145 */
146#define VROOT 0x00001 /* root of its file system */
147#define VTEXT 0x00002 /* vnode is a pure text prototype */
148#define VSYSTEM 0x00004 /* vnode being used by kernel */
149#define VISTTY 0x00008 /* vnode represents a tty */
150#define VXLOCK 0x00100 /* vnode is locked to change underlying type */
151#define VXWANT 0x00200 /* process is waiting for vnode */
152#define VBWAIT 0x00400 /* waiting for output to complete */
153/* open for business 0x00800 */
154/* open for business 0x01000 */
155#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
156/* open for business 0x04000 */
157#define VAGE 0x08000 /* Insert vnode at head of free list */
158#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
159#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
160#define VDOOMED 0x40000 /* This vnode is being recycled */
161#define VFREE 0x80000 /* This vnode is on the freelist */
41a01a4d 162#define VINFREE 0x100000 /* This vnode is in the midst of being freed */
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163#define VONWORKLST 0x200000 /* On syncer work-list */
164#define VMOUNT 0x400000 /* Mount in progress */
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165#define VOBJDIRTY 0x800000 /* object might be dirty */
166#define VPLACEMARKER 0x1000000 /* dummy vnode placemarker */
984263bc 167
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168/*
169 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
170 * help with write clustering)
171 */
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172#define IO_UNIT 0x0001 /* do I/O as atomic unit */
173#define IO_APPEND 0x0002 /* append write to end */
174#define IO_SYNC 0x0004 /* do I/O synchronously */
175#define IO_NODELOCKED 0x0008 /* underlying node already locked */
176#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
177#define IO_VMIO 0x0020 /* data already in VMIO space */
178#define IO_INVAL 0x0040 /* invalidate after I/O */
179#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
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180#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
181#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
182#define IO_CORE 0x0400 /* I/O is part of core dump */
984263bc 183
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184#define IO_SEQMAX 0x7F /* seq heuristic max value */
185#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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186
187/*
188 * Modes. Some values same as Ixxx entries from inode.h for now.
189 */
190#define VSUID 04000 /* set user id on execution */
191#define VSGID 02000 /* set group id on execution */
192#define VSVTX 01000 /* save swapped text even after use */
193#define VREAD 00400 /* read, write, execute permissions */
194#define VWRITE 00200
195#define VEXEC 00100
196
197/*
198 * Token indicating no attribute value yet assigned.
199 */
200#define VNOVAL (-1)
201
202/*
203 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
204 */
597aea93 205#define VLKTIMEOUT (hz / 20 + 1)
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206
207#ifdef _KERNEL
208
209#ifdef MALLOC_DECLARE
210MALLOC_DECLARE(M_VNODE);
211#endif
212
213/*
214 * Convert between vnode types and inode formats (since POSIX.1
215 * defines mode word of stat structure in terms of inode formats).
216 */
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217extern enum vtype iftovt_tab[];
218extern int vttoif_tab[];
219#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
220#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
221#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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222
223/*
224 * Flags to various vnode functions.
225 */
226#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
227#define FORCECLOSE 0x0002 /* vflush: force file closure */
228#define WRITECLOSE 0x0004 /* vflush: only close writable files */
229#define DOCLOSE 0x0008 /* vclean: close active files */
230#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
231#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
232
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233#ifdef DIAGNOSTIC
234#define VATTR_NULL(vap) vattr_null(vap)
235#else
236#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
237#endif /* DIAGNOSTIC */
238
239#define NULLVP ((struct vnode *)NULL)
240
241#define VNODEOP_SET(f) \
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242 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops_sysinit, &f); \
243 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_rm_vnodeops_sysinit, &f);
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244
245/*
246 * Global vnode data.
247 */
248extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
249extern int desiredvnodes; /* number of vnodes desired */
250extern time_t syncdelay; /* max time to delay syncing data */
251extern time_t filedelay; /* time to delay syncing files */
252extern time_t dirdelay; /* time to delay syncing directories */
253extern time_t metadelay; /* time to delay syncing metadata */
254extern struct vm_zone *namei_zone;
255extern int prtactive; /* nonzero to call vprint() */
256extern struct vattr va_null; /* predefined null vattr structure */
257extern int vfs_ioopt;
258
259/*
260 * Macro/function to check for client cache inconsistency w.r.t. leasing.
261 */
262#define LEASE_READ 0x1 /* Check lease for readers */
263#define LEASE_WRITE 0x2 /* Check lease for modifiers */
264
265
b153f746 266extern void (*lease_updatetime) (int deltat);
984263bc 267
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268#define VI_LOCK(vlock, vp) lwkt_gettoken(vlock, (vp)->v_interlock)
269#define VI_UNLOCK(vlock, vp) lwkt_reltoken(vlock)
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270
271#endif /* _KERNEL */
272
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273/*
274 * Mods for extensibility.
275 */
276
277/*
278 * Flags for vdesc_flags:
279 */
597aea93 280#define VDESC_MAX_VPS 16
984263bc 281/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
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282#define VDESC_VP0_WILLRELE 0x0001
283#define VDESC_VP1_WILLRELE 0x0002
284#define VDESC_VP2_WILLRELE 0x0004
285#define VDESC_VP3_WILLRELE 0x0008
286#define VDESC_NOMAP_VPP 0x0100
287#define VDESC_VPP_WILLRELE 0x0200
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288
289/*
290 * VDESC_NO_OFFSET is used to identify the end of the offset list
291 * and in places where no such field exists.
292 */
293#define VDESC_NO_OFFSET -1
294
295/*
296 * This structure describes the vnode operation taking place.
297 */
298struct vnodeop_desc {
299 int vdesc_offset; /* offset in vector--first for speed */
300 char *vdesc_name; /* a readable name for debugging */
301 int vdesc_flags; /* VDESC_* flags */
302
303 /*
304 * These ops are used by bypass routines to map and locate arguments.
305 * Creds and procs are not needed in bypass routines, but sometimes
306 * they are useful to (for example) transport layers.
307 * Nameidata is useful because it has a cred in it.
308 */
309 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
310 int vdesc_vpp_offset; /* return vpp location */
311 int vdesc_cred_offset; /* cred location, if any */
312 int vdesc_proc_offset; /* proc location, if any */
313 int vdesc_componentname_offset; /* if any */
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314};
315
316#ifdef _KERNEL
317/*
318 * A list of all the operation descs.
319 */
320extern struct vnodeop_desc *vnodeop_descs[];
321
322/*
323 * Interlock for scanning list of vnodes attached to a mountpoint
324 */
8a8d5d85 325extern struct lwkt_token mntvnode_token;
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326
327/*
328 * This macro is very helpful in defining those offsets in the vdesc struct.
329 *
330 * This is stolen from X11R4. I ignored all the fancy stuff for
331 * Crays, so if you decide to port this to such a serious machine,
332 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
333 */
597aea93 334#define VOPARG_OFFSET(p_type,field) \
984263bc 335 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 336#define VOPARG_OFFSETOF(s_type,field) \
984263bc 337 VOPARG_OFFSET(s_type*,field)
597aea93 338#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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339 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
340
341
342/*
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343 * This structure is used to configure the new vnodeops vector. The entry
344 * descriptor describes a patricular VOP function while the operations
345 * vector descriptor recursively describes arrays of entry descriptors.
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346 */
347struct vnodeopv_entry_desc {
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348 struct vnodeop_desc *opve_op;
349 int (*opve_func)(struct vop_generic_args *ap);
984263bc 350};
2d3e977e 351
984263bc 352struct vnodeopv_desc {
2d3e977e 353 struct vop_ops **opv_desc_vector; /* vect to allocate/fill*/
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354 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
355};
356
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357struct vnodeopv_node {
358 TAILQ_ENTRY(vnodeopv_node) entry;
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359 struct vop_ops *ops; /* allocated vector */
360 struct vnodeopv_entry_desc *descs; /* null terminated list */
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361};
362
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363#ifdef DEBUG_VFS_LOCKS
364/*
365 * Macros to aid in tracing VFS locking problems. Not totally
366 * reliable since if the process sleeps between changing the lock
367 * state and checking it with the assert, some other process could
368 * change the state. They are good enough for debugging a single
369 * filesystem using a single-threaded test. I find that 'cvs co src'
370 * is a pretty good test.
371 */
372
373/*
374 * [dfr] Kludge until I get around to fixing all the vfs locking.
375 */
376#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
377 || (vp)->v_tag == VT_MFS \
378 || (vp)->v_tag == VT_NFS \
379 || (vp)->v_tag == VT_LFS \
380 || (vp)->v_tag == VT_ISOFS \
381 || (vp)->v_tag == VT_MSDOSFS)
382
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383#define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str)
384#define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str);
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385
386#define ASSERT_VOP_ELOCKED(vp, str) \
387do { \
388 struct vnode *_vp = (vp); \
389 \
390 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 391 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
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392 panic("%s: %p is not exclusive locked but should be", \
393 str, _vp); \
394} while (0)
395
396#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
397do { \
398 struct vnode *_vp = (vp); \
399 \
400 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 401 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
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402 panic("%s: %p is not exclusive locked by another proc", \
403 str, _vp); \
404} while (0)
405
406#define ASSERT_VOP_SLOCKED(vp, str) \
407do { \
408 struct vnode *_vp = (vp); \
409 \
410 if (_vp && IS_LOCKING_VFS(_vp) && \
411 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
412 panic("%s: %p is not locked shared but should be", \
413 str, _vp); \
414} while (0)
415
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416void assert_vop_locked(struct vnode *vp, const char *str);
417void assert_vop_unlocked(struct vnode *vp, const char *str);
418
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419#else
420
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421#define ASSERT_VOP_LOCKED(vp, str)
422#define ASSERT_VOP_UNLOCKED(vp, str)
984263bc 423
4f322a84 424#endif /* DEBUG_VFS_LOCKS */
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425
426/*
427 * VOCALL calls an op given an ops vector. We break it out because BSD's
428 * vclean changes the ops vector and then wants to call ops with the old
429 * vector.
430 */
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431
432typedef int (*vocall_func_t)(struct vop_generic_args *);
433
984263bc 434/*
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435 * This call executes the vops vector for the offset stored in the ap's
436 * descriptor of the passed vops rather then the one related to the
437 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of
438 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops
439 * vector function).
984263bc 440 */
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441#define VOCALL(vops, ap) \
442 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->vdesc_offset)))(ap)
443
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444#define VDESC(OP) (& __CONCAT(OP,_desc))
445#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
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446
447/*
448 * VMIO support inline
449 */
450
451extern int vmiodirenable;
452
453static __inline int
454vn_canvmio(struct vnode *vp)
455{
456 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
457 return(TRUE);
458 return(FALSE);
459}
460
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461/*
462 * Public vnode manipulation functions.
463 */
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464struct file;
465struct mount;
466struct nameidata;
467struct ostat;
468struct proc;
dadab5e9 469struct thread;
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470struct stat;
471struct nstat;
472struct ucred;
473struct uio;
474struct vattr;
475struct vnode;
476struct vop_bwrite_args;
477
b153f746 478extern int (*lease_check_hook) (struct vop_lease_args *);
984263bc 479
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480void addaliasu (struct vnode *vp, udev_t nvp_udev);
481int v_associate_rdev(struct vnode *vp, dev_t dev);
482void v_release_rdev(struct vnode *vp);
b153f746 483int bdevvp (dev_t dev, struct vnode **vpp);
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484void cvtstat (struct stat *st, struct ostat *ost);
485void cvtnstat (struct stat *sb, struct nstat *nsb);
597aea93 486int getnewvnode (enum vtagtype tag,
0961aa92 487 struct mount *mp, struct vop_ops *ops, struct vnode **vpp);
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488int lease_check (struct vop_lease_args *ap);
489int spec_vnoperate (struct vop_generic_args *);
490int speedup_syncer (void);
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491void vattr_null (struct vattr *vap);
492int vcount (struct vnode *vp);
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493void vdrop (struct vnode *);
494int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
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495void vfs_add_vnodeops_sysinit (const void *);
496void vfs_rm_vnodeops_sysinit (const void *);
497void vfs_add_vnodeops(struct vop_ops **, struct vnodeopv_entry_desc *);
498void vfs_rm_vnodeops(struct vop_ops **);
b153f746 499int vflush (struct mount *mp, int rootrefs, int flags);
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500int vmntvnodescan(struct mount *mp,
501 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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502 int (*slowfunc)(struct mount *mp, struct vnode *vp, lwkt_tokref_t vlock,
503 void *data), void *data);
41a01a4d 504
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505int vget (struct vnode *vp, lwkt_tokref_t vlock, int lockflag, struct thread *td);
506void vgone (struct vnode *vp);
41a01a4d 507void vgonel (struct vnode *vp, lwkt_tokref_t vlock, struct thread *td);
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508void vhold (struct vnode *);
509int vinvalbuf (struct vnode *vp, int save,
510 struct thread *td, int slpflag, int slptimeo);
511int vtruncbuf (struct vnode *vp, struct thread *td,
512 off_t length, int blksize);
513void vprint (char *label, struct vnode *vp);
41a01a4d 514int vrecycle (struct vnode *vp, struct lwkt_tokref *inter_lkp,
b153f746 515 struct thread *td);
597aea93 516int vn_close (struct vnode *vp, int flags, struct thread *td);
b153f746 517int vn_isdisk (struct vnode *vp, int *errp);
41a01a4d 518int vn_lock (struct vnode *vp, lwkt_tokref_t vlock, int flags, struct thread *td);
984263bc 519#ifdef DEBUG_LOCKS
41a01a4d 520int debug_vn_lock (struct vnode *vp, lwkt_tokref_t vlock, int flags, struct thread *td,
b153f746 521 const char *filename, int line);
41a01a4d 522#define vn_lock(vp,vlock,flags,p) debug_vn_lock(vp,vlock,flags,p,__FILE__,__LINE__)
984263bc 523#endif
b310dfc4 524
b310dfc4 525int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
597aea93 526int vn_open (struct nameidata *ndp, int fmode, int cmode);
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527void vn_pollevent (struct vnode *vp, int events);
528void vn_pollgone (struct vnode *vp);
529int vn_pollrecord (struct vnode *vp, struct thread *td, int events);
530int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 531 int len, off_t offset, enum uio_seg segflg, int ioflg,
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532 struct ucred *cred, int *aresid, struct thread *td);
533int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 534 int len, off_t offset, enum uio_seg segflg, int ioflg,
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RG
535 struct ucred *cred, int *aresid, struct thread *td);
536int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td);
537dev_t vn_todev (struct vnode *vp);
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538int vfs_object_create (struct vnode *vp, struct thread *td);
539void vfs_timestamp (struct timespec *);
597aea93 540int vn_writechk (struct vnode *vp);
b153f746 541int vop_stdbwrite (struct vop_bwrite_args *ap);
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542int vop_stdislocked (struct vop_islocked_args *ap);
543int vop_stdlock (struct vop_lock_args *ap);
544int vop_stdunlock (struct vop_unlock_args *ap);
545int vop_noislocked (struct vop_islocked_args *ap);
546int vop_nolock (struct vop_lock_args *ap);
547int vop_nopoll (struct vop_poll_args *ap);
548int vop_nounlock (struct vop_unlock_args *ap);
549int vop_stdpathconf (struct vop_pathconf_args *ap);
550int vop_stdpoll (struct vop_poll_args *ap);
551int vop_stdrevoke (struct vop_revoke_args *ap);
552int vop_sharedlock (struct vop_lock_args *ap);
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553int vop_eopnotsupp (struct vop_generic_args *ap);
554int vop_ebadf (struct vop_generic_args *ap);
555int vop_einval (struct vop_generic_args *ap);
556int vop_enotty (struct vop_generic_args *ap);
557int vop_defaultop (struct vop_generic_args *ap);
558int vop_null (struct vop_generic_args *ap);
559int vop_panic (struct vop_generic_args *ap);
560int vop_stdcreatevobject (struct vop_createvobject_args *ap);
561int vop_stddestroyvobject (struct vop_destroyvobject_args *ap);
562int vop_stdgetvobject (struct vop_getvobject_args *ap);
563
597aea93
DR
564void vput (struct vnode *vp);
565void vrele (struct vnode *vp);
b153f746 566void vref (struct vnode *vp);
984263bc 567
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568extern struct vop_ops *default_vnode_vops;
569extern struct vop_ops *spec_vnode_vops;
0961aa92 570extern struct vop_ops *dead_vnode_vops;
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571
572#endif /* _KERNEL */
573
574#endif /* !_SYS_VNODE_H_ */