Remove unused variable.
[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 $
541044dc 35 * $DragonFly: src/sys/sys/vnode.h,v 1.18 2004/06/03 18:09:33 hmp 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>
984263bc 47
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48#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
49#include <sys/thread.h>
50#endif
51
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52#include <machine/lock.h>
53
54/*
55 * The vnode is the focus of all file activity in UNIX. There is a
56 * unique vnode allocated for each active file, each current directory,
57 * each mounted-on file, text file, and the root.
58 */
59
60/*
61 * Vnode types. VNON means no type.
62 */
63enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
64
65/*
66 * Vnode tag types.
67 * These are for the benefit of external programs only (e.g., pstat)
68 * and should NEVER be inspected by the kernel.
69 */
70enum vtagtype {
71 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
72 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
73 VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS,
03998195 74 VT_HPFS, VT_NWFS, VT_SMBFS, VT_UDF
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75};
76
77/*
78 * Each underlying filesystem allocates its own private area and hangs
79 * it from v_data. If non-null, this area is freed in getnewvnode().
80 */
81TAILQ_HEAD(buflists, buf);
82
b153f746 83typedef int vop_t (void *);
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84
85/*
86 * Reading or writing any of these items requires holding the appropriate lock.
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87 * v_freelist is locked by the global vnode_free_list token.
88 * v_mntvnodes is locked by the global mntvnodes token.
984263bc 89 * v_flag, v_usecount, v_holdcount and v_writecount are
8a8d5d85 90 * locked by the v_interlock token.
984263bc 91 * v_pollinfo is locked by the lock contained inside it.
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92 *
93 * XXX note: v_opencount currently only used by specfs. It should be used
94 * universally.
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95 */
96struct vnode {
97 u_long v_flag; /* vnode flags (see below) */
98 int v_usecount; /* reference count of users */
99 int v_writecount; /* reference count of writers */
100 int v_holdcnt; /* page & buffer references */
e4c9c0c8 101 int v_opencount; /* number of explicit opens */
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102 u_long v_id; /* capability identifier */
103 struct mount *v_mount; /* ptr to vfs we are in */
104 vop_t **v_op; /* vnode operations vector */
105 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
106 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */
107 struct buflists v_cleanblkhd; /* clean blocklist head */
108 struct buflists v_dirtyblkhd; /* dirty blocklist head */
109 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
110 long v_numoutput; /* num of writes in progress */
111 enum vtype v_type; /* vnode type */
112 union {
113 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
114 struct socket *vu_socket; /* unix ipc (VSOCK) */
115 struct {
e4c9c0c8 116 udev_t vu_udev; /* device number for attach */
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117 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
118 SLIST_ENTRY(vnode) vu_specnext;
119 } vu_spec;
120 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
121 } v_un;
122 struct nqlease *v_lease; /* Soft reference to lease */
123 daddr_t v_lastw; /* last write (write cluster) */
124 daddr_t v_cstart; /* start block of cluster */
125 daddr_t v_lasta; /* last allocation */
126 int v_clen; /* length of current cluster */
127 struct vm_object *v_object; /* Place to store VM object */
41a01a4d 128 lwkt_token_t v_interlock; /* lock on usecount and flag */
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129 struct lock *v_vnlock; /* used for non-locking fs's */
130 enum vtagtype v_tag; /* type of underlying data */
597aea93 131 void *v_data; /* private data for fs */
7ea21ed1 132 struct namecache_list v_namecache; /* associated nc entries */
984263bc 133 struct {
8a8d5d85 134 struct lwkt_token vpi_token; /* lock to protect below */
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135 struct selinfo vpi_selinfo; /* identity of poller(s) */
136 short vpi_events; /* what they are looking for */
137 short vpi_revents; /* what has happened */
138 } v_pollinfo;
41a01a4d 139 struct thread *v_vxthread; /* thread owning VXLOCK */
29802dbb 140 struct vmresident *v_resident; /* optional vmresident */
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141#ifdef DEBUG_LOCKS
142 const char *filename; /* Source file doing locking */
143 int line; /* Line number doing locking */
144#endif
145};
146#define v_mountedhere v_un.vu_mountedhere
147#define v_socket v_un.vu_socket
e4c9c0c8 148#define v_udev v_un.vu_spec.vu_udev
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149#define v_rdev v_un.vu_spec.vu_specinfo
150#define v_specnext v_un.vu_spec.vu_specnext
151#define v_fifoinfo v_un.vu_fifoinfo
152
153#define VN_POLLEVENT(vp, events) \
154 do { \
155 if ((vp)->v_pollinfo.vpi_events & (events)) \
156 vn_pollevent((vp), (events)); \
157 } while (0)
158
159/*
160 * Vnode flags.
161 */
162#define VROOT 0x00001 /* root of its file system */
163#define VTEXT 0x00002 /* vnode is a pure text prototype */
164#define VSYSTEM 0x00004 /* vnode being used by kernel */
165#define VISTTY 0x00008 /* vnode represents a tty */
166#define VXLOCK 0x00100 /* vnode is locked to change underlying type */
167#define VXWANT 0x00200 /* process is waiting for vnode */
168#define VBWAIT 0x00400 /* waiting for output to complete */
169/* open for business 0x00800 */
170/* open for business 0x01000 */
171#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
172/* open for business 0x04000 */
173#define VAGE 0x08000 /* Insert vnode at head of free list */
174#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
175#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
176#define VDOOMED 0x40000 /* This vnode is being recycled */
177#define VFREE 0x80000 /* This vnode is on the freelist */
41a01a4d 178#define VINFREE 0x100000 /* This vnode is in the midst of being freed */
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179#define VONWORKLST 0x200000 /* On syncer work-list */
180#define VMOUNT 0x400000 /* Mount in progress */
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181#define VOBJDIRTY 0x800000 /* object might be dirty */
182#define VPLACEMARKER 0x1000000 /* dummy vnode placemarker */
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183
184/*
185 * Vnode attributes. A field value of VNOVAL represents a field whose value
186 * is unavailable (getattr) or which is not to be changed (setattr).
187 */
188struct vattr {
189 enum vtype va_type; /* vnode type (for create) */
190 u_short va_mode; /* files access mode and type */
191 short va_nlink; /* number of references to file */
192 uid_t va_uid; /* owner user id */
193 gid_t va_gid; /* owner group id */
194 udev_t va_fsid; /* file system id */
195 long va_fileid; /* file id */
196 u_quad_t va_size; /* file size in bytes */
197 long va_blocksize; /* blocksize preferred for i/o */
198 struct timespec va_atime; /* time of last access */
199 struct timespec va_mtime; /* time of last modification */
200 struct timespec va_ctime; /* time file changed */
201 u_long va_gen; /* generation number of file */
202 u_long va_flags; /* flags defined for file */
203 udev_t va_rdev; /* device the special file represents */
204 u_quad_t va_bytes; /* bytes of disk space held by file */
205 u_quad_t va_filerev; /* file modification number */
206 u_int va_vaflags; /* operations flags, see below */
207 long va_spare; /* remain quad aligned */
208};
209
210/*
211 * Flags for va_vaflags.
212 */
213#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
214#define VA_EXCLUSIVE 0x02 /* exclusive create request */
215
216/*
217 * Flags for ioflag. (high 16 bits used to ask for read-ahead and
218 * help with write clustering)
219 */
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220#define IO_UNIT 0x0001 /* do I/O as atomic unit */
221#define IO_APPEND 0x0002 /* append write to end */
222#define IO_SYNC 0x0004 /* do I/O synchronously */
223#define IO_NODELOCKED 0x0008 /* underlying node already locked */
224#define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */
225#define IO_VMIO 0x0020 /* data already in VMIO space */
226#define IO_INVAL 0x0040 /* invalidate after I/O */
227#define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */
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228#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
229#define IO_NOWDRAIN 0x0200 /* do not block on wdrain */
230#define IO_CORE 0x0400 /* I/O is part of core dump */
984263bc 231
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232#define IO_SEQMAX 0x7F /* seq heuristic max value */
233#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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234
235/*
236 * Modes. Some values same as Ixxx entries from inode.h for now.
237 */
238#define VSUID 04000 /* set user id on execution */
239#define VSGID 02000 /* set group id on execution */
240#define VSVTX 01000 /* save swapped text even after use */
241#define VREAD 00400 /* read, write, execute permissions */
242#define VWRITE 00200
243#define VEXEC 00100
244
245/*
246 * Token indicating no attribute value yet assigned.
247 */
248#define VNOVAL (-1)
249
250/*
251 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
252 */
597aea93 253#define VLKTIMEOUT (hz / 20 + 1)
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254
255#ifdef _KERNEL
256
257#ifdef MALLOC_DECLARE
258MALLOC_DECLARE(M_VNODE);
259#endif
260
261/*
262 * Convert between vnode types and inode formats (since POSIX.1
263 * defines mode word of stat structure in terms of inode formats).
264 */
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265extern enum vtype iftovt_tab[];
266extern int vttoif_tab[];
267#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
268#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
269#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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270
271/*
272 * Flags to various vnode functions.
273 */
274#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
275#define FORCECLOSE 0x0002 /* vflush: force file closure */
276#define WRITECLOSE 0x0004 /* vflush: only close writable files */
277#define DOCLOSE 0x0008 /* vclean: close active files */
278#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
279#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
280
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281#ifdef DIAGNOSTIC
282#define VATTR_NULL(vap) vattr_null(vap)
283#else
284#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
285#endif /* DIAGNOSTIC */
286
287#define NULLVP ((struct vnode *)NULL)
288
289#define VNODEOP_SET(f) \
290 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
291 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
292
293/*
294 * Global vnode data.
295 */
296extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
297extern int desiredvnodes; /* number of vnodes desired */
298extern time_t syncdelay; /* max time to delay syncing data */
299extern time_t filedelay; /* time to delay syncing files */
300extern time_t dirdelay; /* time to delay syncing directories */
301extern time_t metadelay; /* time to delay syncing metadata */
302extern struct vm_zone *namei_zone;
303extern int prtactive; /* nonzero to call vprint() */
304extern struct vattr va_null; /* predefined null vattr structure */
305extern int vfs_ioopt;
306
307/*
308 * Macro/function to check for client cache inconsistency w.r.t. leasing.
309 */
310#define LEASE_READ 0x1 /* Check lease for readers */
311#define LEASE_WRITE 0x2 /* Check lease for modifiers */
312
313
b153f746 314extern void (*lease_updatetime) (int deltat);
984263bc 315
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316#define VI_LOCK(vlock, vp) lwkt_gettoken(vlock, (vp)->v_interlock)
317#define VI_UNLOCK(vlock, vp) lwkt_reltoken(vlock)
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318
319#endif /* _KERNEL */
320
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321/*
322 * Mods for extensibility.
323 */
324
325/*
326 * Flags for vdesc_flags:
327 */
597aea93 328#define VDESC_MAX_VPS 16
984263bc 329/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
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330#define VDESC_VP0_WILLRELE 0x0001
331#define VDESC_VP1_WILLRELE 0x0002
332#define VDESC_VP2_WILLRELE 0x0004
333#define VDESC_VP3_WILLRELE 0x0008
334#define VDESC_NOMAP_VPP 0x0100
335#define VDESC_VPP_WILLRELE 0x0200
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336
337/*
338 * VDESC_NO_OFFSET is used to identify the end of the offset list
339 * and in places where no such field exists.
340 */
341#define VDESC_NO_OFFSET -1
342
343/*
344 * This structure describes the vnode operation taking place.
345 */
346struct vnodeop_desc {
347 int vdesc_offset; /* offset in vector--first for speed */
348 char *vdesc_name; /* a readable name for debugging */
349 int vdesc_flags; /* VDESC_* flags */
350
351 /*
352 * These ops are used by bypass routines to map and locate arguments.
353 * Creds and procs are not needed in bypass routines, but sometimes
354 * they are useful to (for example) transport layers.
355 * Nameidata is useful because it has a cred in it.
356 */
357 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
358 int vdesc_vpp_offset; /* return vpp location */
359 int vdesc_cred_offset; /* cred location, if any */
360 int vdesc_proc_offset; /* proc location, if any */
361 int vdesc_componentname_offset; /* if any */
362 /*
363 * Finally, we've got a list of private data (about each operation)
364 * for each transport layer. (Support to manage this list is not
365 * yet part of BSD.)
366 */
367 caddr_t *vdesc_transports;
368};
369
370#ifdef _KERNEL
371/*
372 * A list of all the operation descs.
373 */
374extern struct vnodeop_desc *vnodeop_descs[];
375
376/*
377 * Interlock for scanning list of vnodes attached to a mountpoint
378 */
8a8d5d85 379extern struct lwkt_token mntvnode_token;
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380
381/*
382 * This macro is very helpful in defining those offsets in the vdesc struct.
383 *
384 * This is stolen from X11R4. I ignored all the fancy stuff for
385 * Crays, so if you decide to port this to such a serious machine,
386 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
387 */
597aea93 388#define VOPARG_OFFSET(p_type,field) \
984263bc 389 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
597aea93 390#define VOPARG_OFFSETOF(s_type,field) \
984263bc 391 VOPARG_OFFSET(s_type*,field)
597aea93 392#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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393 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
394
395
396/*
397 * This structure is used to configure the new vnodeops vector.
398 */
399struct vnodeopv_entry_desc {
400 struct vnodeop_desc *opve_op; /* which operation this is */
401 vop_t *opve_impl; /* code implementing this operation */
402};
403struct vnodeopv_desc {
404 /* ptr to the ptr to the vector where op should go */
405 vop_t ***opv_desc_vector_p;
406 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
407};
408
409/*
410 * A generic structure.
411 * This can be used by bypass routines to identify generic arguments.
412 */
413struct vop_generic_args {
414 struct vnodeop_desc *a_desc;
415 /* other random data follows, presumably */
416};
417
418
419#ifdef DEBUG_VFS_LOCKS
420/*
421 * Macros to aid in tracing VFS locking problems. Not totally
422 * reliable since if the process sleeps between changing the lock
423 * state and checking it with the assert, some other process could
424 * change the state. They are good enough for debugging a single
425 * filesystem using a single-threaded test. I find that 'cvs co src'
426 * is a pretty good test.
427 */
428
429/*
430 * [dfr] Kludge until I get around to fixing all the vfs locking.
431 */
432#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
433 || (vp)->v_tag == VT_MFS \
434 || (vp)->v_tag == VT_NFS \
435 || (vp)->v_tag == VT_LFS \
436 || (vp)->v_tag == VT_ISOFS \
437 || (vp)->v_tag == VT_MSDOSFS)
438
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439#define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str)
440#define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str);
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441
442#define ASSERT_VOP_ELOCKED(vp, str) \
443do { \
444 struct vnode *_vp = (vp); \
445 \
446 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 447 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \
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448 panic("%s: %p is not exclusive locked but should be", \
449 str, _vp); \
450} while (0)
451
452#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \
453do { \
454 struct vnode *_vp = (vp); \
455 \
456 if (_vp && IS_LOCKING_VFS(_vp) && \
dadab5e9 457 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \
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458 panic("%s: %p is not exclusive locked by another proc", \
459 str, _vp); \
460} while (0)
461
462#define ASSERT_VOP_SLOCKED(vp, str) \
463do { \
464 struct vnode *_vp = (vp); \
465 \
466 if (_vp && IS_LOCKING_VFS(_vp) && \
467 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \
468 panic("%s: %p is not locked shared but should be", \
469 str, _vp); \
470} while (0)
471
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472void assert_vop_locked(struct vnode *vp, const char *str);
473void assert_vop_unlocked(struct vnode *vp, const char *str);
474
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475#else
476
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477#define ASSERT_VOP_LOCKED(vp, str)
478#define ASSERT_VOP_UNLOCKED(vp, str)
984263bc 479
4f322a84 480#endif /* DEBUG_VFS_LOCKS */
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481
482/*
483 * VOCALL calls an op given an ops vector. We break it out because BSD's
484 * vclean changes the ops vector and then wants to call ops with the old
485 * vector.
486 */
597aea93 487#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
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488
489/*
490 * This call works for vnodes in the kernel.
491 */
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492#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
493#define VDESC(OP) (& __CONCAT(OP,_desc))
494#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
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495
496/*
497 * VMIO support inline
498 */
499
500extern int vmiodirenable;
501
502static __inline int
503vn_canvmio(struct vnode *vp)
504{
505 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
506 return(TRUE);
507 return(FALSE);
508}
509
510/*
511 * Finally, include the default set of vnode operations.
512 */
513#include "vnode_if.h"
514
515/*
516 * Public vnode manipulation functions.
517 */
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518struct file;
519struct mount;
520struct nameidata;
521struct ostat;
522struct proc;
dadab5e9 523struct thread;
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524struct stat;
525struct nstat;
526struct ucred;
527struct uio;
528struct vattr;
529struct vnode;
530struct vop_bwrite_args;
531
b153f746 532extern int (*lease_check_hook) (struct vop_lease_args *);
984263bc 533
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534void addaliasu (struct vnode *vp, udev_t nvp_udev);
535int v_associate_rdev(struct vnode *vp, dev_t dev);
536void v_release_rdev(struct vnode *vp);
b153f746 537int bdevvp (dev_t dev, struct vnode **vpp);
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538void cvtstat (struct stat *st, struct ostat *ost);
539void cvtnstat (struct stat *sb, struct nstat *nsb);
597aea93 540int getnewvnode (enum vtagtype tag,
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541 struct mount *mp, vop_t **vops, struct vnode **vpp);
542int lease_check (struct vop_lease_args *ap);
543int spec_vnoperate (struct vop_generic_args *);
544int speedup_syncer (void);
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545void vattr_null (struct vattr *vap);
546int vcount (struct vnode *vp);
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547void vdrop (struct vnode *);
548int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp);
549void vfs_add_vnodeops (const void *);
550void vfs_rm_vnodeops (const void *);
551int vflush (struct mount *mp, int rootrefs, int flags);
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552int vmntvnodescan(struct mount *mp,
553 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data),
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554 int (*slowfunc)(struct mount *mp, struct vnode *vp, lwkt_tokref_t vlock,
555 void *data), void *data);
41a01a4d 556
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557int vget (struct vnode *vp, lwkt_tokref_t vlock, int lockflag, struct thread *td);
558void vgone (struct vnode *vp);
41a01a4d 559void vgonel (struct vnode *vp, lwkt_tokref_t vlock, struct thread *td);
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560void vhold (struct vnode *);
561int vinvalbuf (struct vnode *vp, int save,
562 struct thread *td, int slpflag, int slptimeo);
563int vtruncbuf (struct vnode *vp, struct thread *td,
564 off_t length, int blksize);
565void vprint (char *label, struct vnode *vp);
41a01a4d 566int vrecycle (struct vnode *vp, struct lwkt_tokref *inter_lkp,
b153f746 567 struct thread *td);
597aea93 568int vn_close (struct vnode *vp, int flags, struct thread *td);
b153f746 569int vn_isdisk (struct vnode *vp, int *errp);
41a01a4d 570int vn_lock (struct vnode *vp, lwkt_tokref_t vlock, int flags, struct thread *td);
984263bc 571#ifdef DEBUG_LOCKS
41a01a4d 572int debug_vn_lock (struct vnode *vp, lwkt_tokref_t vlock, int flags, struct thread *td,
b153f746 573 const char *filename, int line);
41a01a4d 574#define vn_lock(vp,vlock,flags,p) debug_vn_lock(vp,vlock,flags,p,__FILE__,__LINE__)
984263bc 575#endif
b310dfc4 576
b310dfc4 577int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf);
597aea93 578int vn_open (struct nameidata *ndp, int fmode, int cmode);
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579void vn_pollevent (struct vnode *vp, int events);
580void vn_pollgone (struct vnode *vp);
581int vn_pollrecord (struct vnode *vp, struct thread *td, int events);
582int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 583 int len, off_t offset, enum uio_seg segflg, int ioflg,
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584 struct ucred *cred, int *aresid, struct thread *td);
585int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base,
984263bc 586 int len, off_t offset, enum uio_seg segflg, int ioflg,
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587 struct ucred *cred, int *aresid, struct thread *td);
588int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td);
589dev_t vn_todev (struct vnode *vp);
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590int vfs_object_create (struct vnode *vp, struct thread *td);
591void vfs_timestamp (struct timespec *);
597aea93 592int vn_writechk (struct vnode *vp);
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593int vop_stdbwrite (struct vop_bwrite_args *ap);
594int vop_stdislocked (struct vop_islocked_args *);
595int vop_stdlock (struct vop_lock_args *);
596int vop_stdunlock (struct vop_unlock_args *);
597int vop_noislocked (struct vop_islocked_args *);
598int vop_nolock (struct vop_lock_args *);
599int vop_nopoll (struct vop_poll_args *);
600int vop_nounlock (struct vop_unlock_args *);
601int vop_stdpathconf (struct vop_pathconf_args *);
602int vop_stdpoll (struct vop_poll_args *);
603int vop_revoke (struct vop_revoke_args *);
604int vop_sharedlock (struct vop_lock_args *);
605int vop_eopnotsupp (struct vop_generic_args *ap);
606int vop_ebadf (struct vop_generic_args *ap);
607int vop_einval (struct vop_generic_args *ap);
608int vop_enotty (struct vop_generic_args *ap);
609int vop_defaultop (struct vop_generic_args *ap);
610int vop_null (struct vop_generic_args *ap);
611int vop_panic (struct vop_generic_args *ap);
612int vop_stdcreatevobject (struct vop_createvobject_args *ap);
613int vop_stddestroyvobject (struct vop_destroyvobject_args *ap);
614int vop_stdgetvobject (struct vop_getvobject_args *ap);
615
597aea93
DR
616void vput (struct vnode *vp);
617void vrele (struct vnode *vp);
b153f746 618void vref (struct vnode *vp);
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619
620extern vop_t **default_vnodeop_p;
621extern vop_t **spec_vnodeop_p;
622
623#endif /* _KERNEL */
624
625#endif /* !_SYS_VNODE_H_ */