1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
25 * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
26 */
27
28/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
29/*	  All Rights Reserved	*/
30
31/*
32 * University Copyright- Copyright (c) 1982, 1986, 1988
33 * The Regents of the University of California
34 * All Rights Reserved
35 *
36 * University Acknowledgment- Portions of this document are derived from
37 * software developed by the University of California, Berkeley, and its
38 * contributors.
39 */
40
41#ifndef _SYS_VNODE_H
42#define	_SYS_VNODE_H
43
44#include <sys/types.h>
45#include <sys/t_lock.h>
46#include <sys/time_impl.h>
47#include <sys/cred.h>
48#include <sys/uio.h>
49#include <sys/resource.h>
50#include <vm/seg_enum.h>
51#include <sys/kstat.h>
52#include <sys/kmem.h>
53#include <sys/list.h>
54#include <sys/avl.h>
55#ifdef	_KERNEL
56#include <sys/rwstlock.h>
57#include <sys/buf.h>
58#endif	/* _KERNEL */
59
60#ifdef	__cplusplus
61extern "C" {
62#endif
63
64#if defined(_KERNEL) || defined(_FAKE_KERNEL)
65
66/*
67 * Statistics for all vnode operations.
68 * All operations record number of ops (since boot/mount/zero'ed).
69 * Certain I/O operations (read, write, readdir) also record number
70 * of bytes transferred.
71 * This appears in two places in the system: one is embedded in each
72 * vfs_t.  There is also an array of vopstats_t structures allocated
73 * on a per-fstype basis.
74 */
75
76#define	VOPSTATS_STR	"vopstats_"	/* Initial string for vopstat kstats */
77
78typedef struct vopstats {
79	kstat_named_t	nopen;		/* VOP_OPEN */
80	kstat_named_t	nclose;		/* VOP_CLOSE */
81	kstat_named_t	nread;		/* VOP_READ */
82	kstat_named_t	read_bytes;
83	kstat_named_t	nwrite;		/* VOP_WRITE */
84	kstat_named_t	write_bytes;
85	kstat_named_t	nioctl;		/* VOP_IOCTL */
86	kstat_named_t	nsetfl;		/* VOP_SETFL */
87	kstat_named_t	ngetattr;	/* VOP_GETATTR */
88	kstat_named_t	nsetattr;	/* VOP_SETATTR */
89	kstat_named_t	naccess;	/* VOP_ACCESS */
90	kstat_named_t	nlookup;	/* VOP_LOOKUP */
91	kstat_named_t	ncreate;	/* VOP_CREATE */
92	kstat_named_t	nremove;	/* VOP_REMOVE */
93	kstat_named_t	nlink;		/* VOP_LINK */
94	kstat_named_t	nrename;	/* VOP_RENAME */
95	kstat_named_t	nmkdir;		/* VOP_MKDIR */
96	kstat_named_t	nrmdir;		/* VOP_RMDIR */
97	kstat_named_t	nreaddir;	/* VOP_READDIR */
98	kstat_named_t	readdir_bytes;
99	kstat_named_t	nsymlink;	/* VOP_SYMLINK */
100	kstat_named_t	nreadlink;	/* VOP_READLINK */
101	kstat_named_t	nfsync;		/* VOP_FSYNC */
102	kstat_named_t	ninactive;	/* VOP_INACTIVE */
103	kstat_named_t	nfid;		/* VOP_FID */
104	kstat_named_t	nrwlock;	/* VOP_RWLOCK */
105	kstat_named_t	nrwunlock;	/* VOP_RWUNLOCK */
106	kstat_named_t	nseek;		/* VOP_SEEK */
107	kstat_named_t	ncmp;		/* VOP_CMP */
108	kstat_named_t	nfrlock;	/* VOP_FRLOCK */
109	kstat_named_t	nspace;		/* VOP_SPACE */
110	kstat_named_t	nrealvp;	/* VOP_REALVP */
111	kstat_named_t	ngetpage;	/* VOP_GETPAGE */
112	kstat_named_t	nputpage;	/* VOP_PUTPAGE */
113	kstat_named_t	nmap;		/* VOP_MAP */
114	kstat_named_t	naddmap;	/* VOP_ADDMAP */
115	kstat_named_t	ndelmap;	/* VOP_DELMAP */
116	kstat_named_t	npoll;		/* VOP_POLL */
117	kstat_named_t	ndump;		/* VOP_DUMP */
118	kstat_named_t	npathconf;	/* VOP_PATHCONF */
119	kstat_named_t	npageio;	/* VOP_PAGEIO */
120	kstat_named_t	ndumpctl;	/* VOP_DUMPCTL */
121	kstat_named_t	ndispose;	/* VOP_DISPOSE */
122	kstat_named_t	nsetsecattr;	/* VOP_SETSECATTR */
123	kstat_named_t	ngetsecattr;	/* VOP_GETSECATTR */
124	kstat_named_t	nshrlock;	/* VOP_SHRLOCK */
125	kstat_named_t	nvnevent;	/* VOP_VNEVENT */
126	kstat_named_t	nreqzcbuf;	/* VOP_REQZCBUF */
127	kstat_named_t	nretzcbuf;	/* VOP_RETZCBUF */
128} vopstats_t;
129#endif // defined(_KERNEL) || defined(_FAKE_KERNEL)
130
131/*
132 * The vnode is the focus of all file activity in UNIX.
133 * A vnode is allocated for each active file, each current
134 * directory, each mounted-on file, and the root.
135 *
136 * Each vnode is usually associated with a file-system-specific node (for
137 * UFS, this is the in-memory inode).  Generally, a vnode and an fs-node
138 * should be created and destroyed together as a pair.
139 *
140 * If a vnode is reused for a new file, it should be reinitialized by calling
141 * either vn_reinit() or vn_recycle().
142 *
143 * vn_reinit() resets the entire vnode as if it was returned by vn_alloc().
144 * The caller is responsible for setting up the entire vnode after calling
145 * vn_reinit().  This is important when using kmem caching where the vnode is
146 * allocated by a constructor, for instance.
147 *
148 * vn_recycle() is used when the file system keeps some state around in both
149 * the vnode and the associated FS-node.  In UFS, for example, the inode of
150 * a deleted file can be reused immediately.  The v_data, v_vfsp, v_op, etc.
151 * remains the same but certain fields related to the previous instance need
152 * to be reset.  In particular:
153 *	v_femhead
154 *	v_path
155 *	v_rdcnt, v_wrcnt
156 *	v_mmap_read, v_mmap_write
157 */
158
159/*
160 * vnode types.  VNON means no type.  These values are unrelated to
161 * values in on-disk inodes.
162 */
163typedef enum vtype {
164	VNON	= 0,
165	VREG	= 1,
166	VDIR	= 2,
167	VBLK	= 3,
168	VCHR	= 4,
169	VLNK	= 5,
170	VFIFO	= 6,
171	VDOOR	= 7,
172	VPROC	= 8,
173	VSOCK	= 9,
174	VPORT	= 10,
175	VBAD	= 11
176} vtype_t;
177
178#if defined(_KERNEL) || defined(_FAKE_KERNEL)
179
180/*
181 * VSD - Vnode Specific Data
182 * Used to associate additional private data with a vnode.
183 */
184struct vsd_node {
185	list_node_t vs_nodes;		/* list of all VSD nodes */
186	uint_t vs_nkeys;		/* entries in value array */
187	void **vs_value;		/* array of value/key */
188};
189
190/*
191 * Many of the fields in the vnode are read-only once they are initialized
192 * at vnode creation time.  Other fields are protected by locks.
193 *
194 * IMPORTANT: vnodes should be created ONLY by calls to vn_alloc().  They
195 * may not be embedded into the file-system specific node (inode).  The
196 * size of vnodes may change.
197 *
198 * The v_lock protects:
199 *   v_flag
200 *   v_stream
201 *   v_count
202 *   v_shrlocks
203 *   v_path
204 *   v_vsd
205 *   v_xattrdir
206 *
207 * A special lock (implemented by vn_vfswlock in vnode.c) protects:
208 *   v_vfsmountedhere
209 *
210 * The global flock_lock mutex (in flock.c) protects:
211 *   v_filocks
212 *
213 * IMPORTANT NOTE:
214 *
215 *   The following vnode fields are considered public and may safely be
216 *   accessed by file systems or other consumers:
217 *
218 *     v_lock
219 *     v_flag
220 *     v_count
221 *     v_data
222 *     v_vfsp
223 *     v_stream
224 *     v_type
225 *     v_rdev
226 *
227 * ALL OTHER FIELDS SHOULD BE ACCESSED ONLY BY THE OWNER OF THAT FIELD.
228 * In particular, file systems should not access other fields; they may
229 * change or even be removed.  The functionality which was once provided
230 * by these fields is available through vn_* functions.
231 */
232
233struct fem_head;	/* from fem.h */
234
235typedef struct vnode {
236	kmutex_t	v_lock;		/* protects vnode fields */
237	uint_t		v_flag;		/* vnode flags (see below) */
238	uint_t		v_count;	/* reference count */
239	void		*v_data;	/* private data for fs */
240	struct vfs	*v_vfsp;	/* ptr to containing VFS */
241	struct stdata	*v_stream;	/* associated stream */
242	enum vtype	v_type;		/* vnode type */
243	dev_t		v_rdev;		/* device (VCHR, VBLK) */
244
245	/* PRIVATE FIELDS BELOW - DO NOT USE */
246
247	struct vfs	*v_vfsmountedhere; /* ptr to vfs mounted here */
248	struct vnodeops	*v_op;		/* vnode operations */
249	krwlock_t	v_nbllock;	/* sync for NBMAND locks */
250	char		*v_path;	/* cached path */
251	uint_t		v_rdcnt;	/* open for read count  (VREG only) */
252	uint_t		v_wrcnt;	/* open for write count (VREG only) */
253	struct vnode	*v_xattrdir;	/* unnamed extended attr dir (GFS) */
254
255	/* Private to the fake vnode impl. */
256
257	int		v_fd;
258	dev_t		v_st_dev;
259	ino_t		v_st_ino;
260	avl_node_t	v_avl_node;
261	int		v_vfsrlocks;
262} vnode_t;
263
264#define	IS_DEVVP(vp)	\
265	((vp)->v_type == VCHR || (vp)->v_type == VBLK || (vp)->v_type == VFIFO)
266
267#define	VNODE_ALIGN	16
268
269/*
270 * vnode flags.
271 */
272#define	VROOT		0x01	/* root of its file system */
273#define	VNOCACHE	0x02	/* don't keep cache pages on vnode */
274#define	VNOMAP		0x04	/* file cannot be mapped/faulted */
275#define	VDUP		0x08	/* file should be dup'ed rather then opened */
276#define	VNOSWAP		0x10	/* file cannot be used as virtual swap device */
277#define	VNOMOUNT	0x20	/* file cannot be covered by mount */
278#define	VISSWAP		0x40	/* vnode is being used for swap */
279#define	VSWAPLIKE	0x80	/* vnode acts like swap (but may not be) */
280
281#define	IS_SWAPVP(vp)	(((vp)->v_flag & (VISSWAP | VSWAPLIKE)) != 0)
282
283#else // defined(_KERNEL) || defined(_FAKE_KERNEL)
284typedef struct vnode vnode_t;
285#endif // defined(_KERNEL) || defined(_FAKE_KERNEL)
286
287#if defined(_KERNEL)
288typedef struct vn_vfslocks_entry {
289	rwstlock_t ve_lock;
290	void *ve_vpvfs;
291	struct vn_vfslocks_entry *ve_next;
292	uint32_t ve_refcnt;
293	char pad[64 - sizeof (rwstlock_t) - 2 * sizeof (void *) - \
294	    sizeof (uint32_t)];
295} vn_vfslocks_entry_t;
296#endif	/* _KERNEL */
297
298/*
299 * The following two flags are used to lock the v_vfsmountedhere field
300 */
301#define	VVFSLOCK	0x100
302#define	VVFSWAIT	0x200
303
304/*
305 * Used to serialize VM operations on a vnode
306 */
307#define	VVMLOCK		0x400
308
309/*
310 * Tell vn_open() not to fail a directory open for writing but
311 * to go ahead and call VOP_OPEN() to let the filesystem check.
312 */
313#define	VDIROPEN	0x800
314
315/*
316 * Flag to let the VM system know that this file is most likely a binary
317 * or shared library since it has been mmap()ed EXEC at some time.
318 */
319#define	VVMEXEC		0x1000
320
321#define	VPXFS		0x2000  /* clustering: global fs proxy vnode */
322
323#define	IS_PXFSVP(vp)	((vp)->v_flag & VPXFS)
324
325#define	V_XATTRDIR	0x4000	/* attribute unnamed directory */
326
327#define	IS_XATTRDIR(vp)	((vp)->v_flag & V_XATTRDIR)
328
329#define	V_LOCALITY	0x8000	/* whether locality aware */
330
331/*
332 * Flag that indicates the VM should maintain the v_pages list with all modified
333 * pages on one end and unmodified pages at the other. This makes finding dirty
334 * pages to write back to disk much faster at the expense of taking a minor
335 * fault on the first store instruction which touches a writable page.
336 */
337#define	VMODSORT	(0x10000)
338#define	IS_VMODSORT(vp) \
339	(pvn_vmodsort_supported != 0 && ((vp)->v_flag  & VMODSORT) != 0)
340
341#define	VISSWAPFS	0x20000	/* vnode is being used for swapfs */
342
343/*
344 * The mdb memstat command assumes that IS_SWAPFSVP only uses the
345 * vnode's v_flag field.  If this changes, cache the additional
346 * fields in mdb; see vn_get in mdb/common/modules/genunix/memory.c
347 */
348#define	IS_SWAPFSVP(vp)	(((vp)->v_flag & VISSWAPFS) != 0)
349
350#define	V_SYSATTR	0x40000	/* vnode is a GFS system attribute */
351
352/*
353 * Vnode attributes.  A bit-mask is supplied as part of the
354 * structure to indicate the attributes the caller wants to
355 * set (setattr) or extract (getattr).
356 */
357
358/*
359 * Note that va_nodeid and va_nblocks are 64bit data type.
360 * We support large files over NFSV3. With Solaris client and
361 * Server that generates 64bit ino's and sizes these fields
362 * will overflow if they are 32 bit sizes.
363 */
364
365typedef struct vattr {
366	uint_t		va_mask;	/* bit-mask of attributes */
367	vtype_t		va_type;	/* vnode type (for create) */
368	mode_t		va_mode;	/* file access mode */
369	uid_t		va_uid;		/* owner user id */
370	gid_t		va_gid;		/* owner group id */
371	dev_t		va_fsid;	/* file system id (dev for now) */
372	u_longlong_t	va_nodeid;	/* node id */
373	nlink_t		va_nlink;	/* number of references to file */
374	u_offset_t	va_size;	/* file size in bytes */
375	timestruc_t	va_atime;	/* time of last access */
376	timestruc_t	va_mtime;	/* time of last modification */
377	timestruc_t	va_ctime;	/* time of last status change */
378	dev_t		va_rdev;	/* device the file represents */
379	uint_t		va_blksize;	/* fundamental block size */
380	u_longlong_t	va_nblocks;	/* # of blocks allocated */
381	uint_t		va_seq;		/* sequence number */
382} vattr_t;
383
384#define	AV_SCANSTAMP_SZ	32		/* length of anti-virus scanstamp */
385
386/*
387 * Structure of all optional attributes.
388 */
389typedef struct xoptattr {
390	timestruc_t	xoa_createtime;	/* Create time of file */
391	uint8_t		xoa_archive;
392	uint8_t		xoa_system;
393	uint8_t		xoa_readonly;
394	uint8_t		xoa_hidden;
395	uint8_t		xoa_nounlink;
396	uint8_t		xoa_immutable;
397	uint8_t		xoa_appendonly;
398	uint8_t		xoa_nodump;
399	uint8_t		xoa_opaque;
400	uint8_t		xoa_av_quarantined;
401	uint8_t		xoa_av_modified;
402	uint8_t		xoa_av_scanstamp[AV_SCANSTAMP_SZ];
403	uint8_t		xoa_reparse;
404	uint64_t	xoa_generation;
405	uint8_t		xoa_offline;
406	uint8_t		xoa_sparse;
407} xoptattr_t;
408
409/*
410 * The xvattr structure is really a variable length structure that
411 * is made up of:
412 * - The classic vattr_t (xva_vattr)
413 * - a 32 bit quantity (xva_mapsize) that specifies the size of the
414 *   attribute bitmaps in 32 bit words.
415 * - A pointer to the returned attribute bitmap (needed because the
416 *   previous element, the requested attribute bitmap) is variable lenth.
417 * - The requested attribute bitmap, which is an array of 32 bit words.
418 *   Callers use the XVA_SET_REQ() macro to set the bits corresponding to
419 *   the attributes that are being requested.
420 * - The returned attribute bitmap, which is an array of 32 bit words.
421 *   File systems that support optional attributes use the XVA_SET_RTN()
422 *   macro to set the bits corresponding to the attributes that are being
423 *   returned.
424 * - The xoptattr_t structure which contains the attribute values
425 *
426 * xva_mapsize determines how many words in the attribute bitmaps.
427 * Immediately following the attribute bitmaps is the xoptattr_t.
428 * xva_getxoptattr() is used to get the pointer to the xoptattr_t
429 * section.
430 */
431
432#define	XVA_MAPSIZE	3		/* Size of attr bitmaps */
433#define	XVA_MAGIC	0x78766174	/* Magic # for verification */
434
435/*
436 * The xvattr structure is an extensible structure which permits optional
437 * attributes to be requested/returned.  File systems may or may not support
438 * optional attributes.  They do so at their own discretion but if they do
439 * support optional attributes, they must register the VFSFT_XVATTR feature
440 * so that the optional attributes can be set/retrived.
441 *
442 * The fields of the xvattr structure are:
443 *
444 * xva_vattr - The first element of an xvattr is a legacy vattr structure
445 * which includes the common attributes.  If AT_XVATTR is set in the va_mask
446 * then the entire structure is treated as an xvattr.  If AT_XVATTR is not
447 * set, then only the xva_vattr structure can be used.
448 *
449 * xva_magic - 0x78766174 (hex for "xvat"). Magic number for verification.
450 *
451 * xva_mapsize - Size of requested and returned attribute bitmaps.
452 *
453 * xva_rtnattrmapp - Pointer to xva_rtnattrmap[].  We need this since the
454 * size of the array before it, xva_reqattrmap[], could change which means
455 * the location of xva_rtnattrmap[] could change.  This will allow unbundled
456 * file systems to find the location of xva_rtnattrmap[] when the sizes change.
457 *
458 * xva_reqattrmap[] - Array of requested attributes.  Attributes are
459 * represented by a specific bit in a specific element of the attribute
460 * map array.  Callers set the bits corresponding to the attributes
461 * that the caller wants to get/set.
462 *
463 * xva_rtnattrmap[] - Array of attributes that the file system was able to
464 * process.  Not all file systems support all optional attributes.  This map
465 * informs the caller which attributes the underlying file system was able
466 * to set/get.  (Same structure as the requested attributes array in terms
467 * of each attribute  corresponding to specific bits and array elements.)
468 *
469 * xva_xoptattrs - Structure containing values of optional attributes.
470 * These values are only valid if the corresponding bits in xva_reqattrmap
471 * are set and the underlying file system supports those attributes.
472 */
473typedef struct xvattr {
474	vattr_t		xva_vattr;	/* Embedded vattr structure */
475	uint32_t	xva_magic;	/* Magic Number */
476	uint32_t	xva_mapsize;	/* Size of attr bitmap (32-bit words) */
477	uint32_t	*xva_rtnattrmapp;	/* Ptr to xva_rtnattrmap[] */
478	uint32_t	xva_reqattrmap[XVA_MAPSIZE];	/* Requested attrs */
479	uint32_t	xva_rtnattrmap[XVA_MAPSIZE];	/* Returned attrs */
480	xoptattr_t	xva_xoptattrs;	/* Optional attributes */
481} xvattr_t;
482
483#ifdef _SYSCALL32
484/*
485 * For bigtypes time_t changed to 64 bit on the 64-bit kernel.
486 * Define an old version for user/kernel interface
487 */
488
489#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
490#pragma pack(4)
491#endif
492
493typedef struct vattr32 {
494	uint32_t	va_mask;	/* bit-mask of attributes */
495	vtype_t		va_type;	/* vnode type (for create) */
496	mode32_t	va_mode;	/* file access mode */
497	uid32_t		va_uid;		/* owner user id */
498	gid32_t		va_gid;		/* owner group id */
499	dev32_t		va_fsid;	/* file system id (dev for now) */
500	u_longlong_t	va_nodeid;	/* node id */
501	nlink_t		va_nlink;	/* number of references to file */
502	u_offset_t	va_size;	/* file size in bytes */
503	timestruc32_t	va_atime;	/* time of last access */
504	timestruc32_t	va_mtime;	/* time of last modification */
505	timestruc32_t	va_ctime;	/* time of last status change */
506	dev32_t		va_rdev;	/* device the file represents */
507	uint32_t	va_blksize;	/* fundamental block size */
508	u_longlong_t	va_nblocks;	/* # of blocks allocated */
509	uint32_t	va_seq;		/* sequence number */
510} vattr32_t;
511
512#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
513#pragma pack()
514#endif
515
516#else  /* not _SYSCALL32 */
517#define	vattr32		vattr
518typedef vattr_t		vattr32_t;
519#endif /* _SYSCALL32 */
520
521/*
522 * Attributes of interest to the caller of setattr or getattr.
523 */
524#define	AT_TYPE		0x00001
525#define	AT_MODE		0x00002
526#define	AT_UID		0x00004
527#define	AT_GID		0x00008
528#define	AT_FSID		0x00010
529#define	AT_NODEID	0x00020
530#define	AT_NLINK	0x00040
531#define	AT_SIZE		0x00080
532#define	AT_ATIME	0x00100
533#define	AT_MTIME	0x00200
534#define	AT_CTIME	0x00400
535#define	AT_RDEV		0x00800
536#define	AT_BLKSIZE	0x01000
537#define	AT_NBLOCKS	0x02000
538/*			0x04000 */	/* unused */
539#define	AT_SEQ		0x08000
540/*
541 * If AT_XVATTR is set then there are additional bits to process in
542 * the xvattr_t's attribute bitmap.  If this is not set then the bitmap
543 * MUST be ignored.  Note that this bit must be set/cleared explicitly.
544 * That is, setting AT_ALL will NOT set AT_XVATTR.
545 */
546#define	AT_XVATTR	0x10000
547
548#define	AT_ALL		(AT_TYPE|AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|\
549			AT_NLINK|AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|\
550			AT_RDEV|AT_BLKSIZE|AT_NBLOCKS|AT_SEQ)
551
552#define	AT_STAT		(AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|AT_NLINK|\
553			AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|AT_RDEV|AT_TYPE)
554
555#define	AT_TIMES	(AT_ATIME|AT_MTIME|AT_CTIME)
556
557#define	AT_NOSET	(AT_NLINK|AT_RDEV|AT_FSID|AT_NODEID|AT_TYPE|\
558			AT_BLKSIZE|AT_NBLOCKS|AT_SEQ)
559
560/*
561 * Attribute bits used in the extensible attribute's (xva's) attribute
562 * bitmaps.  Note that the bitmaps are made up of a variable length number
563 * of 32-bit words.  The convention is to use XAT{n}_{attrname} where "n"
564 * is the element in the bitmap (starting at 1).  This convention is for
565 * the convenience of the maintainer to keep track of which element each
566 * attribute belongs to.
567 *
568 * NOTE THAT CONSUMERS MUST *NOT* USE THE XATn_* DEFINES DIRECTLY.  CONSUMERS
569 * MUST USE THE XAT_* DEFINES.
570 */
571#define	XAT0_INDEX	0LL		/* Index into bitmap for XAT0 attrs */
572#define	XAT0_CREATETIME	0x00000001	/* Create time of file */
573#define	XAT0_ARCHIVE	0x00000002	/* Archive */
574#define	XAT0_SYSTEM	0x00000004	/* System */
575#define	XAT0_READONLY	0x00000008	/* Readonly */
576#define	XAT0_HIDDEN	0x00000010	/* Hidden */
577#define	XAT0_NOUNLINK	0x00000020	/* Nounlink */
578#define	XAT0_IMMUTABLE	0x00000040	/* immutable */
579#define	XAT0_APPENDONLY	0x00000080	/* appendonly */
580#define	XAT0_NODUMP	0x00000100	/* nodump */
581#define	XAT0_OPAQUE	0x00000200	/* opaque */
582#define	XAT0_AV_QUARANTINED	0x00000400	/* anti-virus quarantine */
583#define	XAT0_AV_MODIFIED	0x00000800	/* anti-virus modified */
584#define	XAT0_AV_SCANSTAMP	0x00001000	/* anti-virus scanstamp */
585#define	XAT0_REPARSE	0x00002000	/* FS reparse point */
586#define	XAT0_GEN	0x00004000	/* object generation number */
587#define	XAT0_OFFLINE	0x00008000	/* offline */
588#define	XAT0_SPARSE	0x00010000	/* sparse */
589
590#define	XAT0_ALL_ATTRS	(XAT0_CREATETIME|XAT0_ARCHIVE|XAT0_SYSTEM| \
591    XAT0_READONLY|XAT0_HIDDEN|XAT0_NOUNLINK|XAT0_IMMUTABLE|XAT0_APPENDONLY| \
592    XAT0_NODUMP|XAT0_OPAQUE|XAT0_AV_QUARANTINED|  XAT0_AV_MODIFIED| \
593    XAT0_AV_SCANSTAMP|XAT0_REPARSE|XATO_GEN|XAT0_OFFLINE|XAT0_SPARSE)
594
595/* Support for XAT_* optional attributes */
596#define	XVA_MASK		0xffffffff	/* Used to mask off 32 bits */
597#define	XVA_SHFT		32		/* Used to shift index */
598
599/*
600 * Used to pry out the index and attribute bits from the XAT_* attributes
601 * defined below.  Note that we're masking things down to 32 bits then
602 * casting to uint32_t.
603 */
604#define	XVA_INDEX(attr)		((uint32_t)(((attr) >> XVA_SHFT) & XVA_MASK))
605#define	XVA_ATTRBIT(attr)	((uint32_t)((attr) & XVA_MASK))
606
607/*
608 * The following defines present a "flat namespace" so that consumers don't
609 * need to keep track of which element belongs to which bitmap entry.
610 *
611 * NOTE THAT THESE MUST NEVER BE OR-ed TOGETHER
612 */
613#define	XAT_CREATETIME		((XAT0_INDEX << XVA_SHFT) | XAT0_CREATETIME)
614#define	XAT_ARCHIVE		((XAT0_INDEX << XVA_SHFT) | XAT0_ARCHIVE)
615#define	XAT_SYSTEM		((XAT0_INDEX << XVA_SHFT) | XAT0_SYSTEM)
616#define	XAT_READONLY		((XAT0_INDEX << XVA_SHFT) | XAT0_READONLY)
617#define	XAT_HIDDEN		((XAT0_INDEX << XVA_SHFT) | XAT0_HIDDEN)
618#define	XAT_NOUNLINK		((XAT0_INDEX << XVA_SHFT) | XAT0_NOUNLINK)
619#define	XAT_IMMUTABLE		((XAT0_INDEX << XVA_SHFT) | XAT0_IMMUTABLE)
620#define	XAT_APPENDONLY		((XAT0_INDEX << XVA_SHFT) | XAT0_APPENDONLY)
621#define	XAT_NODUMP		((XAT0_INDEX << XVA_SHFT) | XAT0_NODUMP)
622#define	XAT_OPAQUE		((XAT0_INDEX << XVA_SHFT) | XAT0_OPAQUE)
623#define	XAT_AV_QUARANTINED	((XAT0_INDEX << XVA_SHFT) | XAT0_AV_QUARANTINED)
624#define	XAT_AV_MODIFIED		((XAT0_INDEX << XVA_SHFT) | XAT0_AV_MODIFIED)
625#define	XAT_AV_SCANSTAMP	((XAT0_INDEX << XVA_SHFT) | XAT0_AV_SCANSTAMP)
626#define	XAT_REPARSE		((XAT0_INDEX << XVA_SHFT) | XAT0_REPARSE)
627#define	XAT_GEN			((XAT0_INDEX << XVA_SHFT) | XAT0_GEN)
628#define	XAT_OFFLINE		((XAT0_INDEX << XVA_SHFT) | XAT0_OFFLINE)
629#define	XAT_SPARSE		((XAT0_INDEX << XVA_SHFT) | XAT0_SPARSE)
630
631/*
632 * The returned attribute map array (xva_rtnattrmap[]) is located past the
633 * requested attribute map array (xva_reqattrmap[]).  Its location changes
634 * when the array sizes change.  We use a separate pointer in a known location
635 * (xva_rtnattrmapp) to hold the location of xva_rtnattrmap[].  This is
636 * set in xva_init()
637 */
638#define	XVA_RTNATTRMAP(xvap)	((xvap)->xva_rtnattrmapp)
639
640/*
641 * XVA_SET_REQ() sets an attribute bit in the proper element in the bitmap
642 * of requested attributes (xva_reqattrmap[]).
643 */
644#define	XVA_SET_REQ(xvap, attr)					\
645	ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR);		\
646	ASSERT((xvap)->xva_magic == XVA_MAGIC);			\
647	(xvap)->xva_reqattrmap[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr)
648/*
649 * XVA_CLR_REQ() clears an attribute bit in the proper element in the bitmap
650 * of requested attributes (xva_reqattrmap[]).
651 */
652#define	XVA_CLR_REQ(xvap, attr)					\
653	ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR);		\
654	ASSERT((xvap)->xva_magic == XVA_MAGIC);			\
655	(xvap)->xva_reqattrmap[XVA_INDEX(attr)] &= ~XVA_ATTRBIT(attr)
656
657/*
658 * XVA_SET_RTN() sets an attribute bit in the proper element in the bitmap
659 * of returned attributes (xva_rtnattrmap[]).
660 */
661#define	XVA_SET_RTN(xvap, attr)					\
662	ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR);		\
663	ASSERT((xvap)->xva_magic == XVA_MAGIC);			\
664	(XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr)
665
666/*
667 * XVA_ISSET_REQ() checks the requested attribute bitmap (xva_reqattrmap[])
668 * to see of the corresponding attribute bit is set.  If so, returns non-zero.
669 */
670#define	XVA_ISSET_REQ(xvap, attr)					\
671	((((xvap)->xva_vattr.va_mask | AT_XVATTR) &&			\
672		((xvap)->xva_magic == XVA_MAGIC) &&			\
673		((xvap)->xva_mapsize > XVA_INDEX(attr))) ?		\
674	((xvap)->xva_reqattrmap[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) :	0)
675
676/*
677 * XVA_ISSET_RTN() checks the returned attribute bitmap (xva_rtnattrmap[])
678 * to see of the corresponding attribute bit is set.  If so, returns non-zero.
679 */
680#define	XVA_ISSET_RTN(xvap, attr)					\
681	((((xvap)->xva_vattr.va_mask | AT_XVATTR) &&			\
682		((xvap)->xva_magic == XVA_MAGIC) &&			\
683		((xvap)->xva_mapsize > XVA_INDEX(attr))) ?		\
684	((XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0)
685
686/*
687 *  Modes.  Some values same as S_xxx entries from stat.h for convenience.
688 */
689#define	VSUID		04000		/* set user id on execution */
690#define	VSGID		02000		/* set group id on execution */
691#define	VSVTX		01000		/* save swapped text even after use */
692
693/*
694 * Permissions.
695 */
696#define	VREAD		00400
697#define	VWRITE		00200
698#define	VEXEC		00100
699
700#define	MODEMASK	07777		/* mode bits plus permission bits */
701#define	PERMMASK	00777		/* permission bits */
702
703/*
704 * VOP_ACCESS flags
705 */
706#define	V_ACE_MASK	0x1	/* mask represents  NFSv4 ACE permissions */
707#define	V_APPEND	0x2	/* want to do append only check */
708
709/*
710 * Check whether mandatory file locking is enabled.
711 */
712
713#define	MANDMODE(mode)		(((mode) & (VSGID|(VEXEC>>3))) == VSGID)
714#define	MANDLOCK(vp, mode)	((vp)->v_type == VREG && MANDMODE(mode))
715
716/*
717 * Flags for vnode operations.
718 */
719enum rm		{ RMFILE, RMDIRECTORY };	/* rm or rmdir (remove) */
720enum symfollow	{ NO_FOLLOW, FOLLOW };		/* follow symlinks (or not) */
721enum vcexcl	{ NONEXCL, EXCL };		/* (non)excl create */
722enum create	{ CRCREAT, CRMKNOD, CRMKDIR };	/* reason for create */
723
724typedef enum rm		rm_t;
725typedef enum symfollow	symfollow_t;
726typedef enum vcexcl	vcexcl_t;
727typedef enum create	create_t;
728
729/* Vnode Events - Used by VOP_VNEVENT */
730typedef enum vnevent	{
731	VE_SUPPORT	= 0,	/* Query */
732	VE_RENAME_SRC	= 1,	/* Rename, with vnode as source */
733	VE_RENAME_DEST	= 2,	/* Rename, with vnode as target/destination */
734	VE_REMOVE	= 3,	/* Remove of vnode's name */
735	VE_RMDIR	= 4,	/* Remove of directory vnode's name */
736	VE_CREATE	= 5,	/* Create with vnode's name which exists */
737	VE_LINK		= 6,	/* Link with vnode's name as source */
738	VE_RENAME_DEST_DIR	= 7,	/* Rename with vnode as target dir */
739	VE_MOUNTEDOVER	= 8,	/* File or Filesystem got mounted over vnode */
740	VE_TRUNCATE = 9		/* Truncate */
741} vnevent_t;
742
743/*
744 * Values for checking vnode open and map counts
745 */
746enum v_mode { V_READ, V_WRITE, V_RDORWR, V_RDANDWR };
747
748typedef enum v_mode v_mode_t;
749
750#define	V_TRUE	1
751#define	V_FALSE	0
752
753/*
754 * Structure used on VOP_GETSECATTR and VOP_SETSECATTR operations
755 */
756
757typedef struct vsecattr {
758	uint_t		vsa_mask;	/* See below */
759	int		vsa_aclcnt;	/* ACL entry count */
760	void		*vsa_aclentp;	/* pointer to ACL entries */
761	int		vsa_dfaclcnt;	/* default ACL entry count */
762	void		*vsa_dfaclentp;	/* pointer to default ACL entries */
763	size_t		vsa_aclentsz;	/* ACE size in bytes of vsa_aclentp */
764	uint_t		vsa_aclflags;	/* ACE ACL flags */
765} vsecattr_t;
766
767/* vsa_mask values */
768#define	VSA_ACL			0x0001
769#define	VSA_ACLCNT		0x0002
770#define	VSA_DFACL		0x0004
771#define	VSA_DFACLCNT		0x0008
772#define	VSA_ACE			0x0010
773#define	VSA_ACECNT		0x0020
774#define	VSA_ACE_ALLTYPES	0x0040
775#define	VSA_ACE_ACLFLAGS	0x0080	/* get/set ACE ACL flags */
776
777/*
778 * Structure used by various vnode operations to determine
779 * the context (pid, host, identity) of a caller.
780 *
781 * The cc_caller_id is used to identify one or more callers who invoke
782 * operations, possibly on behalf of others.  For example, the NFS
783 * server could have it's own cc_caller_id which can be detected by
784 * vnode/vfs operations or (FEM) monitors on those operations.  New
785 * caller IDs are generated by fs_new_caller_id().
786 */
787typedef struct caller_context {
788	pid_t		cc_pid;		/* Process ID of the caller */
789	int		cc_sysid;	/* System ID, used for remote calls */
790	u_longlong_t	cc_caller_id;	/* Identifier for (set of) caller(s) */
791	ulong_t		cc_flags;
792} caller_context_t;
793
794/*
795 * Flags for caller context.  The caller sets CC_DONTBLOCK if it does not
796 * want to block inside of a FEM monitor.  The monitor will set CC_WOULDBLOCK
797 * and return EAGAIN if the operation would have blocked.
798 */
799#define	CC_WOULDBLOCK	0x01
800#define	CC_DONTBLOCK	0x02
801
802/*
803 * Structure tags for function prototypes, defined elsewhere.
804 */
805struct pathname;
806struct fid;
807struct flock64;
808struct flk_callback;
809struct shrlock;
810struct page;
811struct seg;
812struct as;
813struct pollhead;
814struct taskq;
815
816#if defined(_KERNEL) || defined(_FAKE_KERNEL)
817
818/*
819 * VNODE_OPS defines all the vnode operations.  It is used to define
820 * the vnodeops structure (below) and the fs_func_p union (vfs_opreg.h).
821 */
822#define	VNODE_OPS							\
823	int	(*vop_open)(vnode_t **, int, cred_t *,			\
824				caller_context_t *);			\
825	int	(*vop_close)(vnode_t *, int, int, offset_t, cred_t *,	\
826				caller_context_t *);			\
827	int	(*vop_read)(vnode_t *, uio_t *, int, cred_t *,		\
828				caller_context_t *);			\
829	int	(*vop_write)(vnode_t *, uio_t *, int, cred_t *,		\
830				caller_context_t *);			\
831	int	(*vop_ioctl)(vnode_t *, int, intptr_t, int, cred_t *,	\
832				int *, caller_context_t *);		\
833	int	(*vop_setfl)(vnode_t *, int, int, cred_t *,		\
834				caller_context_t *);			\
835	int	(*vop_getattr)(vnode_t *, vattr_t *, int, cred_t *,	\
836				caller_context_t *);			\
837	int	(*vop_setattr)(vnode_t *, vattr_t *, int, cred_t *,	\
838				caller_context_t *);			\
839	int	(*vop_access)(vnode_t *, int, int, cred_t *,		\
840				caller_context_t *);			\
841	int	(*vop_lookup)(vnode_t *, char *, vnode_t **,		\
842				struct pathname *,			\
843				int, vnode_t *, cred_t *,		\
844				caller_context_t *, int *,		\
845				struct pathname *);			\
846	int	(*vop_create)(vnode_t *, char *, vattr_t *, vcexcl_t,	\
847				int, vnode_t **, cred_t *, int,		\
848				caller_context_t *, vsecattr_t *);	\
849	int	(*vop_remove)(vnode_t *, char *, cred_t *,		\
850				caller_context_t *, int);		\
851	int	(*vop_link)(vnode_t *, vnode_t *, char *, cred_t *,	\
852				caller_context_t *, int);		\
853	int	(*vop_rename)(vnode_t *, char *, vnode_t *, char *,	\
854				cred_t *, caller_context_t *, int);	\
855	int	(*vop_mkdir)(vnode_t *, char *, vattr_t *, vnode_t **,	\
856				cred_t *, caller_context_t *, int,	\
857				vsecattr_t *);				\
858	int	(*vop_rmdir)(vnode_t *, char *, vnode_t *, cred_t *,	\
859				caller_context_t *, int);		\
860	int	(*vop_readdir)(vnode_t *, uio_t *, cred_t *, int *,	\
861				caller_context_t *, int);		\
862	int	(*vop_symlink)(vnode_t *, char *, vattr_t *, char *,	\
863				cred_t *, caller_context_t *, int);	\
864	int	(*vop_readlink)(vnode_t *, uio_t *, cred_t *,		\
865				caller_context_t *);			\
866	int	(*vop_fsync)(vnode_t *, int, cred_t *,			\
867				caller_context_t *);			\
868	void	(*vop_inactive)(vnode_t *, cred_t *,			\
869				caller_context_t *);			\
870	int	(*vop_fid)(vnode_t *, struct fid *,			\
871				caller_context_t *);			\
872	int	(*vop_rwlock)(vnode_t *, int, caller_context_t *);	\
873	void	(*vop_rwunlock)(vnode_t *, int, caller_context_t *);	\
874	int	(*vop_seek)(vnode_t *, offset_t, offset_t *,		\
875				caller_context_t *);			\
876	int	(*vop_cmp)(vnode_t *, vnode_t *, caller_context_t *);	\
877	int	(*vop_frlock)(vnode_t *, int, struct flock64 *,		\
878				int, offset_t,				\
879				struct flk_callback *, cred_t *,	\
880				caller_context_t *);			\
881	int	(*vop_space)(vnode_t *, int, struct flock64 *,		\
882				int, offset_t,				\
883				cred_t *, caller_context_t *);		\
884	int	(*vop_realvp)(vnode_t *, vnode_t **,			\
885				caller_context_t *);			\
886	int	(*vop_getpage)(vnode_t *, offset_t, size_t, uint_t *,	\
887				struct page **, size_t, struct seg *,	\
888				caddr_t, enum seg_rw, cred_t *,		\
889				caller_context_t *);			\
890	int	(*vop_putpage)(vnode_t *, offset_t, size_t,		\
891				int, cred_t *, caller_context_t *);	\
892	int	(*vop_map)(vnode_t *, offset_t, struct as *,		\
893				caddr_t *, size_t,			\
894				uchar_t, uchar_t, uint_t, cred_t *,	\
895				caller_context_t *);			\
896	int	(*vop_addmap)(vnode_t *, offset_t, struct as *,		\
897				caddr_t, size_t,			\
898				uchar_t, uchar_t, uint_t, cred_t *,	\
899				caller_context_t *);			\
900	int	(*vop_delmap)(vnode_t *, offset_t, struct as *,		\
901				caddr_t, size_t,			\
902				uint_t, uint_t, uint_t, cred_t *,	\
903				caller_context_t *);			\
904	int	(*vop_poll)(vnode_t *, short, int, short *,		\
905				struct pollhead **,			\
906				caller_context_t *);			\
907	int	(*vop_dump)(vnode_t *, caddr_t, offset_t, offset_t,	\
908				caller_context_t *);			\
909	int	(*vop_pathconf)(vnode_t *, int, ulong_t *, cred_t *,	\
910				caller_context_t *);			\
911	int	(*vop_pageio)(vnode_t *, struct page *,			\
912				u_offset_t, size_t, int, cred_t *,	\
913				caller_context_t *);			\
914	int	(*vop_dumpctl)(vnode_t *, int, offset_t *,		\
915				caller_context_t *);			\
916	void	(*vop_dispose)(vnode_t *, struct page *,		\
917				int, int, cred_t *,			\
918				caller_context_t *);			\
919	int	(*vop_setsecattr)(vnode_t *, vsecattr_t *,		\
920				int, cred_t *, caller_context_t *);	\
921	int	(*vop_getsecattr)(vnode_t *, vsecattr_t *,		\
922				int, cred_t *, caller_context_t *);	\
923	int	(*vop_shrlock)(vnode_t *, int, struct shrlock *,	\
924				int, cred_t *, caller_context_t *);	\
925	int	(*vop_vnevent)(vnode_t *, vnevent_t, vnode_t *,		\
926				char *, caller_context_t *);		\
927	int	(*vop_reqzcbuf)(vnode_t *, enum uio_rw, xuio_t *,	\
928				cred_t *, caller_context_t *);		\
929	int	(*vop_retzcbuf)(vnode_t *, xuio_t *, cred_t *,		\
930				caller_context_t *)
931	/* NB: No ";" */
932
933/*
934 * Operations on vnodes.  Note: File systems must never operate directly
935 * on a 'vnodeops' structure -- it WILL change in future releases!  They
936 * must use vn_make_ops() to create the structure.
937 */
938typedef struct vnodeops {
939	const char *vnop_name;
940	VNODE_OPS;	/* Signatures of all vnode operations (vops) */
941} vnodeops_t;
942
943typedef int (*fs_generic_func_p) ();	/* Generic vop/vfsop/femop/fsemop ptr */
944
945extern int	fop_open(vnode_t **, int, cred_t *, caller_context_t *);
946extern int	fop_close(vnode_t *, int, int, offset_t, cred_t *,
947				caller_context_t *);
948extern int	fop_read(vnode_t *, uio_t *, int, cred_t *, caller_context_t *);
949extern int	fop_write(vnode_t *, uio_t *, int, cred_t *,
950				caller_context_t *);
951extern int	fop_ioctl(vnode_t *, int, intptr_t, int, cred_t *, int *,
952				caller_context_t *);
953extern int	fop_setfl(vnode_t *, int, int, cred_t *, caller_context_t *);
954extern int	fop_getattr(vnode_t *, vattr_t *, int, cred_t *,
955				caller_context_t *);
956extern int	fop_setattr(vnode_t *, vattr_t *, int, cred_t *,
957				caller_context_t *);
958extern int	fop_access(vnode_t *, int, int, cred_t *, caller_context_t *);
959extern int	fop_lookup(vnode_t *, char *, vnode_t **, struct pathname *,
960				int, vnode_t *, cred_t *, caller_context_t *,
961				int *, struct pathname *);
962extern int	fop_create(vnode_t *, char *, vattr_t *, vcexcl_t, int,
963				vnode_t **, cred_t *, int, caller_context_t *,
964				vsecattr_t *);
965extern int	fop_remove(vnode_t *vp, char *, cred_t *, caller_context_t *,
966				int);
967extern int	fop_link(vnode_t *, vnode_t *, char *, cred_t *,
968				caller_context_t *, int);
969extern int	fop_rename(vnode_t *, char *, vnode_t *, char *, cred_t *,
970				caller_context_t *, int);
971extern int	fop_mkdir(vnode_t *, char *, vattr_t *, vnode_t **, cred_t *,
972				caller_context_t *, int, vsecattr_t *);
973extern int	fop_rmdir(vnode_t *, char *, vnode_t *, cred_t *,
974				caller_context_t *, int);
975extern int	fop_readdir(vnode_t *, uio_t *, cred_t *, int *,
976				caller_context_t *, int);
977extern int	fop_symlink(vnode_t *, char *, vattr_t *, char *, cred_t *,
978				caller_context_t *, int);
979extern int	fop_readlink(vnode_t *, uio_t *, cred_t *, caller_context_t *);
980extern int	fop_fsync(vnode_t *, int, cred_t *, caller_context_t *);
981extern void	fop_inactive(vnode_t *, cred_t *, caller_context_t *);
982extern int	fop_fid(vnode_t *, struct fid *, caller_context_t *);
983extern int	fop_rwlock(vnode_t *, int, caller_context_t *);
984extern void	fop_rwunlock(vnode_t *, int, caller_context_t *);
985extern int	fop_seek(vnode_t *, offset_t, offset_t *, caller_context_t *);
986extern int	fop_cmp(vnode_t *, vnode_t *, caller_context_t *);
987extern int	fop_frlock(vnode_t *, int, struct flock64 *, int, offset_t,
988				struct flk_callback *, cred_t *,
989				caller_context_t *);
990extern int	fop_space(vnode_t *, int, struct flock64 *, int, offset_t,
991				cred_t *, caller_context_t *);
992extern int	fop_realvp(vnode_t *, vnode_t **, caller_context_t *);
993extern int	fop_getpage(vnode_t *, offset_t, size_t, uint_t *,
994				struct page **, size_t, struct seg *,
995				caddr_t, enum seg_rw, cred_t *,
996				caller_context_t *);
997extern int	fop_putpage(vnode_t *, offset_t, size_t, int, cred_t *,
998				caller_context_t *);
999extern int	fop_map(vnode_t *, offset_t, struct as *, caddr_t *, size_t,
1000				uchar_t, uchar_t, uint_t, cred_t *cr,
1001				caller_context_t *);
1002extern int	fop_addmap(vnode_t *, offset_t, struct as *, caddr_t, size_t,
1003				uchar_t, uchar_t, uint_t, cred_t *,
1004				caller_context_t *);
1005extern int	fop_delmap(vnode_t *, offset_t, struct as *, caddr_t, size_t,
1006				uint_t, uint_t, uint_t, cred_t *,
1007				caller_context_t *);
1008extern int	fop_poll(vnode_t *, short, int, short *, struct pollhead **,
1009				caller_context_t *);
1010extern int	fop_dump(vnode_t *, caddr_t, offset_t, offset_t,
1011    caller_context_t *);
1012extern int	fop_pathconf(vnode_t *, int, ulong_t *, cred_t *,
1013				caller_context_t *);
1014extern int	fop_pageio(vnode_t *, struct page *, u_offset_t, size_t, int,
1015				cred_t *, caller_context_t *);
1016extern int	fop_dumpctl(vnode_t *, int, offset_t *, caller_context_t *);
1017extern void	fop_dispose(vnode_t *, struct page *, int, int, cred_t *,
1018				caller_context_t *);
1019extern int	fop_setsecattr(vnode_t *, vsecattr_t *, int, cred_t *,
1020				caller_context_t *);
1021extern int	fop_getsecattr(vnode_t *, vsecattr_t *, int, cred_t *,
1022				caller_context_t *);
1023extern int	fop_shrlock(vnode_t *, int, struct shrlock *, int, cred_t *,
1024				caller_context_t *);
1025extern int	fop_vnevent(vnode_t *, vnevent_t, vnode_t *, char *,
1026				caller_context_t *);
1027extern int	fop_reqzcbuf(vnode_t *, enum uio_rw, xuio_t *, cred_t *,
1028				caller_context_t *);
1029extern int	fop_retzcbuf(vnode_t *, xuio_t *, cred_t *, caller_context_t *);
1030
1031#endif	/* _KERNEL */
1032
1033#define	VOP_OPEN(vpp, mode, cr, ct) \
1034	fop_open(vpp, mode, cr, ct)
1035#define	VOP_CLOSE(vp, f, c, o, cr, ct) \
1036	fop_close(vp, f, c, o, cr, ct)
1037#define	VOP_READ(vp, uiop, iof, cr, ct) \
1038	fop_read(vp, uiop, iof, cr, ct)
1039#define	VOP_WRITE(vp, uiop, iof, cr, ct) \
1040	fop_write(vp, uiop, iof, cr, ct)
1041#define	VOP_IOCTL(vp, cmd, a, f, cr, rvp, ct) \
1042	fop_ioctl(vp, cmd, a, f, cr, rvp, ct)
1043#define	VOP_SETFL(vp, f, a, cr, ct) \
1044	fop_setfl(vp, f, a, cr, ct)
1045#define	VOP_GETATTR(vp, vap, f, cr, ct) \
1046	fop_getattr(vp, vap, f, cr, ct)
1047#define	VOP_SETATTR(vp, vap, f, cr, ct) \
1048	fop_setattr(vp, vap, f, cr, ct)
1049#define	VOP_ACCESS(vp, mode, f, cr, ct) \
1050	fop_access(vp, mode, f, cr, ct)
1051#define	VOP_LOOKUP(vp, cp, vpp, pnp, f, rdir, cr, ct, defp, rpnp) \
1052	fop_lookup(vp, cp, vpp, pnp, f, rdir, cr, ct, defp, rpnp)
1053#define	VOP_CREATE(dvp, p, vap, ex, mode, vpp, cr, flag, ct, vsap) \
1054	fop_create(dvp, p, vap, ex, mode, vpp, cr, flag, ct, vsap)
1055#define	VOP_REMOVE(dvp, p, cr, ct, f) \
1056	fop_remove(dvp, p, cr, ct, f)
1057#define	VOP_LINK(tdvp, fvp, p, cr, ct, f) \
1058	fop_link(tdvp, fvp, p, cr, ct, f)
1059#define	VOP_RENAME(fvp, fnm, tdvp, tnm, cr, ct, f) \
1060	fop_rename(fvp, fnm, tdvp, tnm, cr, ct, f)
1061#define	VOP_MKDIR(dp, p, vap, vpp, cr, ct, f, vsap) \
1062	fop_mkdir(dp, p, vap, vpp, cr, ct, f, vsap)
1063#define	VOP_RMDIR(dp, p, cdir, cr, ct, f) \
1064	fop_rmdir(dp, p, cdir, cr, ct, f)
1065#define	VOP_READDIR(vp, uiop, cr, eofp, ct, f) \
1066	fop_readdir(vp, uiop, cr, eofp, ct, f)
1067#define	VOP_SYMLINK(dvp, lnm, vap, tnm, cr, ct, f) \
1068	fop_symlink(dvp, lnm, vap, tnm, cr, ct, f)
1069#define	VOP_READLINK(vp, uiop, cr, ct) \
1070	fop_readlink(vp, uiop, cr, ct)
1071#define	VOP_FSYNC(vp, syncflag, cr, ct) \
1072	fop_fsync(vp, syncflag, cr, ct)
1073#define	VOP_INACTIVE(vp, cr, ct) \
1074	fop_inactive(vp, cr, ct)
1075#define	VOP_FID(vp, fidp, ct) \
1076	fop_fid(vp, fidp, ct)
1077#define	VOP_RWLOCK(vp, w, ct) \
1078	fop_rwlock(vp, w, ct)
1079#define	VOP_RWUNLOCK(vp, w, ct) \
1080	fop_rwunlock(vp, w, ct)
1081#define	VOP_SEEK(vp, ooff, noffp, ct) \
1082	fop_seek(vp, ooff, noffp, ct)
1083#define	VOP_CMP(vp1, vp2, ct) \
1084	fop_cmp(vp1, vp2, ct)
1085#define	VOP_FRLOCK(vp, cmd, a, f, o, cb, cr, ct) \
1086	fop_frlock(vp, cmd, a, f, o, cb, cr, ct)
1087#define	VOP_SPACE(vp, cmd, a, f, o, cr, ct) \
1088	fop_space(vp, cmd, a, f, o, cr, ct)
1089#define	VOP_REALVP(vp1, vp2, ct) \
1090	fop_realvp(vp1, vp2, ct)
1091#define	VOP_GETPAGE(vp, of, sz, pr, pl, ps, sg, a, rw, cr, ct) \
1092	fop_getpage(vp, of, sz, pr, pl, ps, sg, a, rw, cr, ct)
1093#define	VOP_PUTPAGE(vp, of, sz, fl, cr, ct) \
1094	fop_putpage(vp, of, sz, fl, cr, ct)
1095#define	VOP_MAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \
1096	fop_map(vp, of, as, a, sz, p, mp, fl, cr, ct)
1097#define	VOP_ADDMAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \
1098	fop_addmap(vp, of, as, a, sz, p, mp, fl, cr, ct)
1099#define	VOP_DELMAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \
1100	fop_delmap(vp, of, as, a, sz, p, mp, fl, cr, ct)
1101#define	VOP_POLL(vp, events, anyyet, reventsp, phpp, ct) \
1102	fop_poll(vp, events, anyyet, reventsp, phpp, ct)
1103#define	VOP_DUMP(vp, addr, bn, count, ct) \
1104	fop_dump(vp, addr, bn, count, ct)
1105#define	VOP_PATHCONF(vp, cmd, valp, cr, ct) \
1106	fop_pathconf(vp, cmd, valp, cr, ct)
1107#define	VOP_PAGEIO(vp, pp, io_off, io_len, flags, cr, ct) \
1108	fop_pageio(vp, pp, io_off, io_len, flags, cr, ct)
1109#define	VOP_DUMPCTL(vp, action, blkp, ct) \
1110	fop_dumpctl(vp, action, blkp, ct)
1111#define	VOP_DISPOSE(vp, pp, flag, dn, cr, ct) \
1112	fop_dispose(vp, pp, flag, dn, cr, ct)
1113#define	VOP_GETSECATTR(vp, vsap, f, cr, ct) \
1114	fop_getsecattr(vp, vsap, f, cr, ct)
1115#define	VOP_SETSECATTR(vp, vsap, f, cr, ct) \
1116	fop_setsecattr(vp, vsap, f, cr, ct)
1117#define	VOP_SHRLOCK(vp, cmd, shr, f, cr, ct) \
1118	fop_shrlock(vp, cmd, shr, f, cr, ct)
1119#define	VOP_VNEVENT(vp, vnevent, dvp, fnm, ct) \
1120	fop_vnevent(vp, vnevent, dvp, fnm, ct)
1121#define	VOP_REQZCBUF(vp, rwflag, xuiop, cr, ct) \
1122	fop_reqzcbuf(vp, rwflag, xuiop, cr, ct)
1123#define	VOP_RETZCBUF(vp, xuiop, cr, ct) \
1124	fop_retzcbuf(vp, xuiop, cr, ct)
1125
1126#define	VOPNAME_OPEN		"open"
1127#define	VOPNAME_CLOSE		"close"
1128#define	VOPNAME_READ		"read"
1129#define	VOPNAME_WRITE		"write"
1130#define	VOPNAME_IOCTL		"ioctl"
1131#define	VOPNAME_SETFL		"setfl"
1132#define	VOPNAME_GETATTR		"getattr"
1133#define	VOPNAME_SETATTR		"setattr"
1134#define	VOPNAME_ACCESS		"access"
1135#define	VOPNAME_LOOKUP		"lookup"
1136#define	VOPNAME_CREATE		"create"
1137#define	VOPNAME_REMOVE		"remove"
1138#define	VOPNAME_LINK		"link"
1139#define	VOPNAME_RENAME		"rename"
1140#define	VOPNAME_MKDIR		"mkdir"
1141#define	VOPNAME_RMDIR		"rmdir"
1142#define	VOPNAME_READDIR		"readdir"
1143#define	VOPNAME_SYMLINK		"symlink"
1144#define	VOPNAME_READLINK	"readlink"
1145#define	VOPNAME_FSYNC		"fsync"
1146#define	VOPNAME_INACTIVE	"inactive"
1147#define	VOPNAME_FID		"fid"
1148#define	VOPNAME_RWLOCK		"rwlock"
1149#define	VOPNAME_RWUNLOCK	"rwunlock"
1150#define	VOPNAME_SEEK		"seek"
1151#define	VOPNAME_CMP		"cmp"
1152#define	VOPNAME_FRLOCK		"frlock"
1153#define	VOPNAME_SPACE		"space"
1154#define	VOPNAME_REALVP		"realvp"
1155#define	VOPNAME_GETPAGE		"getpage"
1156#define	VOPNAME_PUTPAGE		"putpage"
1157#define	VOPNAME_MAP		"map"
1158#define	VOPNAME_ADDMAP		"addmap"
1159#define	VOPNAME_DELMAP		"delmap"
1160#define	VOPNAME_POLL		"poll"
1161#define	VOPNAME_DUMP		"dump"
1162#define	VOPNAME_PATHCONF	"pathconf"
1163#define	VOPNAME_PAGEIO		"pageio"
1164#define	VOPNAME_DUMPCTL		"dumpctl"
1165#define	VOPNAME_DISPOSE		"dispose"
1166#define	VOPNAME_GETSECATTR	"getsecattr"
1167#define	VOPNAME_SETSECATTR	"setsecattr"
1168#define	VOPNAME_SHRLOCK		"shrlock"
1169#define	VOPNAME_VNEVENT		"vnevent"
1170#define	VOPNAME_REQZCBUF	"reqzcbuf"
1171#define	VOPNAME_RETZCBUF	"retzcbuf"
1172
1173/*
1174 * Flags for VOP_LOOKUP
1175 *
1176 * Defined in file.h, but also possible, FIGNORECASE and FSEARCH
1177 *
1178 */
1179#define	LOOKUP_DIR		0x01	/* want parent dir vp */
1180#define	LOOKUP_XATTR		0x02	/* lookup up extended attr dir */
1181#define	CREATE_XATTR_DIR	0x04	/* Create extended attr dir */
1182#define	LOOKUP_HAVE_SYSATTR_DIR	0x08	/* Already created virtual GFS dir */
1183
1184/*
1185 * Flags for VOP_READDIR
1186 */
1187#define	V_RDDIR_ENTFLAGS	0x01	/* request dirent flags */
1188#define	V_RDDIR_ACCFILTER	0x02	/* filter out inaccessible dirents */
1189
1190/*
1191 * Flags for VOP_RWLOCK/VOP_RWUNLOCK
1192 * VOP_RWLOCK will return the flag that was actually set, or -1 if none.
1193 */
1194#define	V_WRITELOCK_TRUE	(1)	/* Request write-lock on the vnode */
1195#define	V_WRITELOCK_FALSE	(0)	/* Request read-lock on the vnode */
1196
1197/*
1198 * Flags for VOP_DUMPCTL
1199 */
1200#define	DUMP_ALLOC	0
1201#define	DUMP_FREE	1
1202#define	DUMP_SCAN	2
1203
1204/*
1205 * Public vnode manipulation functions.
1206 */
1207#if defined(_KERNEL) || defined(_FAKE_KERNEL)
1208
1209vnode_t *vn_alloc(int);
1210void	vn_reinit(vnode_t *);
1211void	vn_recycle(vnode_t *);
1212void	vn_free(vnode_t *);
1213
1214int	vn_is_readonly(vnode_t *);
1215int	vn_is_opened(vnode_t *, v_mode_t);
1216int	vn_is_mapped(vnode_t *, v_mode_t);
1217int	vn_has_other_opens(vnode_t *, v_mode_t);
1218void	vn_open_upgrade(vnode_t *, int);
1219void	vn_open_downgrade(vnode_t *, int);
1220
1221int	vn_can_change_zones(vnode_t *vp);
1222
1223int	vn_has_flocks(vnode_t *);
1224int	vn_has_mandatory_locks(vnode_t *, int);
1225int	vn_has_cached_data(vnode_t *);
1226
1227void	vn_setops(vnode_t *, vnodeops_t *);
1228vnodeops_t *vn_getops(vnode_t *);
1229int	vn_matchops(vnode_t *, vnodeops_t *);
1230int	vn_matchopval(vnode_t *, char *, fs_generic_func_p);
1231int	vn_ismntpt(vnode_t *);
1232
1233struct vfs *vn_mountedvfs(vnode_t *);
1234
1235int	vn_in_dnlc(vnode_t *);
1236
1237void	vn_create_cache(void);
1238void	vn_destroy_cache(void);
1239
1240void	vn_freevnodeops(vnodeops_t *);
1241
1242int	vn_open(char *pnamep, enum uio_seg seg, int filemode, int createmode,
1243		struct vnode **vpp, enum create crwhy, mode_t umask);
1244int	vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode,
1245		struct vnode **vpp, enum create crwhy,
1246		mode_t umask, struct vnode *startvp, int fd);
1247int	vn_create(char *pnamep, enum uio_seg seg, struct vattr *vap,
1248		enum vcexcl excl, int mode, struct vnode **vpp,
1249		enum create why, int flag, mode_t umask);
1250int	vn_createat(char *pnamep, enum uio_seg seg, struct vattr *vap,
1251		enum vcexcl excl, int mode, struct vnode **vpp,
1252		enum create why, int flag, mode_t umask, struct vnode *startvp);
1253int	vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base, ssize_t len,
1254		offset_t offset, enum uio_seg seg, int ioflag, rlim64_t ulimit,
1255		cred_t *cr, ssize_t *residp);
1256
1257void	vn_hold(struct vnode *vp);
1258void	vn_rele(struct vnode *vp);
1259void	vn_rele_async(struct vnode *vp, struct taskq *taskq);
1260void	vn_rele_dnlc(struct vnode *vp);
1261void	vn_rele_stream(struct vnode *vp);
1262int	vn_link(char *from, char *to, enum uio_seg seg);
1263int	vn_linkat(vnode_t *fstartvp, char *from, enum symfollow follow,
1264		vnode_t *tstartvp, char *to, enum uio_seg seg);
1265int	vn_rename(char *from, char *to, enum uio_seg seg);
1266int	vn_renameat(vnode_t *fdvp, char *fname, vnode_t *tdvp, char *tname,
1267		enum uio_seg seg);
1268int	vn_remove(char *fnamep, enum uio_seg seg, enum rm dirflag);
1269int	vn_removeat(vnode_t *startvp, char *fnamep, enum uio_seg seg,
1270		enum rm dirflag);
1271int	vn_compare(vnode_t *vp1, vnode_t *vp2);
1272int	vn_vfswlock(struct vnode *vp);
1273int	vn_vfswlock_wait(struct vnode *vp);
1274int	vn_vfsrlock(struct vnode *vp);
1275int	vn_vfsrlock_wait(struct vnode *vp);
1276void	vn_vfsunlock(struct vnode *vp);
1277int	vn_vfswlock_held(struct vnode *vp);
1278vnode_t *specvp(struct vnode *vp, dev_t dev, vtype_t type, struct cred *cr);
1279vnode_t *makespecvp(dev_t dev, vtype_t type);
1280
1281#if defined(_KERNEL)
1282vn_vfslocks_entry_t *vn_vfslocks_getlock(void *);
1283void	vn_vfslocks_rele(vn_vfslocks_entry_t *);
1284#endif
1285
1286boolean_t vn_is_reparse(vnode_t *, cred_t *, caller_context_t *);
1287
1288void vn_copypath(struct vnode *src, struct vnode *dst);
1289void vn_setpath_str(struct vnode *vp, const char *str, size_t len);
1290void vn_setpath(vnode_t *rootvp, struct vnode *startvp, struct vnode *vp,
1291    const char *path, size_t plen);
1292void vn_renamepath(vnode_t *dvp, vnode_t *vp, const char *nm, size_t len);
1293
1294/* Vnode event notification */
1295void	vnevent_rename_src(vnode_t *, vnode_t *, char *, caller_context_t *);
1296void	vnevent_rename_dest(vnode_t *, vnode_t *, char *, caller_context_t *);
1297void	vnevent_remove(vnode_t *, vnode_t *, char *, caller_context_t *);
1298void	vnevent_rmdir(vnode_t *, vnode_t *, char *, caller_context_t *);
1299void	vnevent_create(vnode_t *, caller_context_t *);
1300void	vnevent_link(vnode_t *, caller_context_t *);
1301void	vnevent_rename_dest_dir(vnode_t *, caller_context_t *ct);
1302void	vnevent_mountedover(vnode_t *, caller_context_t *);
1303void	vnevent_truncate(vnode_t *, caller_context_t *);
1304int	vnevent_support(vnode_t *, caller_context_t *);
1305
1306/* Vnode specific data */
1307void vsd_create(uint_t *, void (*)(void *));
1308void vsd_destroy(uint_t *);
1309void *vsd_get(vnode_t *, uint_t);
1310int vsd_set(vnode_t *, uint_t, void *);
1311void vsd_free(vnode_t *);
1312
1313/*
1314 * Extensible vnode attribute (xva) routines:
1315 * xva_init() initializes an xvattr_t (zero struct, init mapsize, set AT_XATTR)
1316 * xva_getxoptattr() returns a ponter to the xoptattr_t section of xvattr_t
1317 */
1318void		xva_init(xvattr_t *);
1319xoptattr_t	*xva_getxoptattr(xvattr_t *);	/* Get ptr to xoptattr_t */
1320
1321void xattr_init(void);		/* Initialize vnodeops for xattrs */
1322
1323/* GFS tunnel for xattrs */
1324int xattr_dir_lookup(vnode_t *, vnode_t **, int, cred_t *);
1325
1326/* Reparse Point */
1327void reparse_point_init(void);
1328
1329/* Context identification */
1330u_longlong_t	fs_new_caller_id();
1331
1332int	vn_vmpss_usepageio(vnode_t *);
1333
1334/* Empty v_path placeholder */
1335extern char *vn_vpath_empty;
1336
1337/*
1338 * Needed for use of IS_VMODSORT() in kernel.
1339 */
1340extern uint_t pvn_vmodsort_supported;
1341
1342#define	VN_HOLD(vp)	{ \
1343	vn_hold(vp); \
1344}
1345
1346#define	VN_RELE(vp)	{ \
1347	vn_rele(vp); \
1348}
1349
1350#define	VN_RELE_ASYNC(vp, taskq)	{ \
1351	vn_rele_async(vp, taskq); \
1352}
1353
1354#define	VN_RELE_LOCKED(vp) {			\
1355	(vp)->v_count--;			\
1356}
1357
1358#define	VN_SET_VFS_TYPE_DEV(vp, vfsp, type, dev)	{ \
1359	(vp)->v_vfsp = (vfsp); \
1360	(vp)->v_type = (type); \
1361	(vp)->v_rdev = (dev); \
1362}
1363
1364/*
1365 * Compare two vnodes for equality.  In general this macro should be used
1366 * in preference to calling VOP_CMP directly.
1367 */
1368#if defined(_FAKE_KERNEL)
1369#define	VN_CMP(VP1, VP2) \
1370	(((VP1) == (VP2)) ? 1 : VOP_CMP(VP1, VP2, NULL))
1371#else
1372#define	VN_CMP(VP1, VP2)	((VP1) == (VP2) ? 1 :	\
1373	((VP1) && (VP2) && (vn_getops(VP1) == vn_getops(VP2)) ? \
1374	VOP_CMP(VP1, VP2, NULL) : 0))
1375#endif
1376
1377/*
1378 * Some well-known global vnodes used by the VM system to name pages.
1379 */
1380extern struct vnode kvps[];
1381
1382typedef enum {
1383	KV_KVP,		/* vnode for all segkmem pages */
1384	KV_ZVP,		/* vnode for all ZFS pages */
1385#if defined(__sparc)
1386	KV_MPVP,	/* vnode for all page_t meta-pages */
1387	KV_PROMVP,	/* vnode for all PROM pages */
1388#endif	/* __sparc */
1389	KV_MAX		/* total number of vnodes in kvps[] */
1390} kvps_index_t;
1391
1392#define	VN_ISKAS(vp)	((vp) >= &kvps[0] && (vp) < &kvps[KV_MAX])
1393
1394#endif	/* _KERNEL */
1395
1396/*
1397 * Flags to VOP_SETATTR/VOP_GETATTR.
1398 */
1399#define	ATTR_UTIME	0x01	/* non-default utime(2) request */
1400#define	ATTR_EXEC	0x02	/* invocation from exec(2) */
1401#define	ATTR_COMM	0x04	/* yield common vp attributes */
1402#define	ATTR_HINT	0x08	/* information returned will be `hint' */
1403#define	ATTR_REAL	0x10	/* yield attributes of the real vp */
1404#define	ATTR_NOACLCHECK	0x20	/* Don't check ACL when checking permissions */
1405#define	ATTR_TRIGGER	0x40	/* Mount first if vnode is a trigger mount */
1406/*
1407 * Generally useful macros.
1408 */
1409#define	VBSIZE(vp)	((vp)->v_vfsp->vfs_bsize)
1410
1411#define	VTOZONE(vp)	((vp)->v_vfsp->vfs_zone)
1412
1413#define	NULLVP		((struct vnode *)0)
1414#define	NULLVPP		((struct vnode **)0)
1415
1416#ifdef	_KERNEL
1417
1418/*
1419 * Structure used while handling asynchronous VOP_PUTPAGE operations.
1420 */
1421struct async_reqs {
1422	struct async_reqs *a_next;	/* pointer to next arg struct */
1423	struct vnode *a_vp;		/* vnode pointer */
1424	u_offset_t a_off;			/* offset in file */
1425	uint_t a_len;			/* size of i/o request */
1426	int a_flags;			/* flags to indicate operation type */
1427	struct cred *a_cred;		/* cred pointer	*/
1428	ushort_t a_prealloced;		/* set if struct is pre-allocated */
1429};
1430
1431/*
1432 * VN_DISPOSE() -- given a page pointer, safely invoke VOP_DISPOSE().
1433 * Note that there is no guarantee that the page passed in will be
1434 * freed.  If that is required, then a check after calling VN_DISPOSE would
1435 * be necessary to ensure the page was freed.
1436 */
1437#define	VN_DISPOSE(pp, flag, dn, cr)	{ \
1438	if ((pp)->p_vnode != NULL && !VN_ISKAS((pp)->p_vnode)) \
1439		VOP_DISPOSE((pp)->p_vnode, (pp), (flag), (dn), (cr), NULL); \
1440	else if ((flag) == B_FREE) \
1441		page_free((pp), (dn)); \
1442	else \
1443		page_destroy((pp), (dn)); \
1444	}
1445
1446#endif	/* _KERNEL */
1447
1448#ifdef	__cplusplus
1449}
1450#endif
1451
1452#endif	/* _SYS_VNODE_H */
1453