1 /* $NetBSD: vnode.h,v 1.256 2015/07/12 08:11:28 hannken Exp $ */
2
3 /*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /*
30 * Copyright (c) 1989, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. Neither the name of the University nor the names of its contributors
42 * may be used to endorse or promote products derived from this software
43 * without specific prior written permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 *
57 * @(#)vnode.h 8.17 (Berkeley) 5/20/95
58 */
59
60 #ifndef _SYS_VNODE_H_
61 #define _SYS_VNODE_H_
62
63 #include <sys/event.h>
64 #include <sys/queue.h>
65 #include <sys/condvar.h>
66 #include <sys/rwlock.h>
67 #include <sys/mutex.h>
68
69 /* XXX: clean up includes later */
70 #include <uvm/uvm_param.h> /* XXX */
71 #include <uvm/uvm_pglist.h> /* XXX */
72 #include <uvm/uvm_object.h> /* XXX */
73 #include <uvm/uvm_extern.h> /* XXX */
74
75 struct namecache;
76 struct uvm_ractx;
77
78 /*
79 * The vnode is the focus of all file activity in UNIX. There is a
80 * unique vnode allocated for each active file, each current directory,
81 * each mounted-on file, text file, and the root.
82 */
83
84 /*
85 * Vnode types. VNON means no type.
86 */
87 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
88
89 #define VNODE_TYPES \
90 "VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD"
91
92 /*
93 * Vnode tag types.
94 * These are for the benefit of external programs only (e.g., pstat)
95 * and should NEVER be inspected by the kernel.
96 */
97 enum vtagtype {
98 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS,
99 VT_FDESC, VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS,
100 VT_AFS, VT_ISOFS, VT_UNION, VT_ADOSFS, VT_EXT2FS, VT_CODA,
101 VT_FILECORE, VT_NTFS, VT_VFS, VT_OVERLAY, VT_SMBFS, VT_PTYFS,
102 VT_TMPFS, VT_UDF, VT_SYSVBFS, VT_PUFFS, VT_HFS, VT_EFS, VT_ZFS,
103 VT_RUMP, VT_NILFS, VT_V7FS, VT_CHFS
104 };
105
106 #define VNODE_TAGS \
107 "VT_NON", "VT_UFS", "VT_NFS", "VT_MFS", "VT_MSDOSFS", "VT_LFS", "VT_LOFS", \
108 "VT_FDESC", "VT_PORTAL", "VT_NULL", "VT_UMAP", "VT_KERNFS", "VT_PROCFS", \
109 "VT_AFS", "VT_ISOFS", "VT_UNION", "VT_ADOSFS", "VT_EXT2FS", "VT_CODA", \
110 "VT_FILECORE", "VT_NTFS", "VT_VFS", "VT_OVERLAY", "VT_SMBFS", "VT_PTYFS", \
111 "VT_TMPFS", "VT_UDF", "VT_SYSVBFS", "VT_PUFFS", "VT_HFS", "VT_EFS", \
112 "VT_ZFS", "VT_RUMP", "VT_NILFS", "VT_V7FS", "VT_CHFS"
113
114 struct vnode;
115 struct buf;
116
117 LIST_HEAD(buflists, buf);
118 TAILQ_HEAD(vnodelst, vnode);
119
120 /*
121 * Reading or writing any of these items requires holding the appropriate
122 * lock. Field markings and the corresponding locks:
123 *
124 * : stable, reference to the vnode is required
125 * f vnode_free_list_lock, or vrele_lock for vrele_list
126 * i v_interlock
127 * m mntvnode_lock
128 * n namecache_lock
129 * s syncer_data_lock
130 * u locked by underlying filesystem
131 * v vnode lock
132 * x v_interlock + bufcache_lock to modify, either to inspect
133 *
134 * Each underlying filesystem allocates its own private area and hangs
135 * it from v_data.
136 */
137 struct vnode {
138 struct uvm_object v_uobj; /* i: the VM object */
139 kcondvar_t v_cv; /* i: synchronization */
140 voff_t v_size; /* i: size of file */
141 voff_t v_writesize; /* i: new size after write */
142 int v_iflag; /* i: VI_* flags */
143 int v_vflag; /* v: VV_* flags */
144 int v_uflag; /* u: VU_* flags */
145 int v_numoutput; /* i: # of pending writes */
146 int v_writecount; /* i: ref count of writers */
147 int v_holdcnt; /* i: page & buffer refs */
148 int v_synclist_slot; /* s: synclist slot index */
149 struct mount *v_mount; /* v: ptr to vfs we are in */
150 int (**v_op)(void *); /* :: vnode operations vector */
151 TAILQ_ENTRY(vnode) v_freelist; /* f: vnode freelist */
152 struct vnodelst *v_freelisthd; /* f: which freelist? */
153 TAILQ_ENTRY(vnode) v_mntvnodes; /* m: vnodes for mount point */
154 struct buflists v_cleanblkhd; /* x: clean blocklist head */
155 struct buflists v_dirtyblkhd; /* x: dirty blocklist head */
156 TAILQ_ENTRY(vnode) v_synclist; /* s: vnodes with dirty bufs */
157 LIST_HEAD(, namecache) v_dnclist; /* n: namecaches (children) */
158 LIST_HEAD(, namecache) v_nclist; /* n: namecaches (parent) */
159 union {
160 struct mount *vu_mountedhere;/* v: ptr to vfs (VDIR) */
161 struct socket *vu_socket; /* v: unix ipc (VSOCK) */
162 struct specnode *vu_specnode; /* v: device (VCHR, VBLK) */
163 struct fifoinfo *vu_fifoinfo; /* v: fifo (VFIFO) */
164 struct uvm_ractx *vu_ractx; /* i: read-ahead ctx (VREG) */
165 } v_un;
166 enum vtype v_type; /* :: vnode type */
167 enum vtagtype v_tag; /* :: type of underlying data */
168 krwlock_t v_lock; /* v: lock for this vnode */
169 void *v_data; /* :: private data for fs */
170 struct klist v_klist; /* i: notes attached to vnode */
171 };
172 #define v_usecount v_uobj.uo_refs
173 #define v_interlock v_uobj.vmobjlock
174 #define v_mountedhere v_un.vu_mountedhere
175 #define v_socket v_un.vu_socket
176 #define v_specnode v_un.vu_specnode
177 #define v_fifoinfo v_un.vu_fifoinfo
178 #define v_ractx v_un.vu_ractx
179
180 typedef struct vnodelst vnodelst_t;
181 typedef struct vnode vnode_t;
182
183 /*
184 * Vnode flags. The first set are locked by vnode lock or are stable.
185 * VSYSTEM is only used to skip vflush()ing quota files. VISTTY is used
186 * when reading dead vnodes.
187 */
188 #define VV_ROOT 0x00000001 /* root of its file system */
189 #define VV_SYSTEM 0x00000002 /* vnode being used by kernel */
190 #define VV_ISTTY 0x00000004 /* vnode represents a tty */
191 #define VV_MAPPED 0x00000008 /* vnode might have user mappings */
192 #define VV_MPSAFE 0x00000010 /* file system code is MP safe */
193 #define VV_LOCKSWORK 0x00000020 /* FS supports locking discipline */
194
195 /*
196 * The second set are locked by vp->v_interlock.
197 */
198 #define VI_TEXT 0x00000100 /* vnode is a pure text prototype */
199 #define VI_EXECMAP 0x00000200 /* might have PROT_EXEC mappings */
200 #define VI_WRMAP 0x00000400 /* might have PROT_WRITE u. mappings */
201 #define VI_WRMAPDIRTY 0x00000800 /* might have dirty pages */
202 #ifdef _VFS_VNODE_PRIVATE
203 #define VI_XLOCK 0x00001000 /* vnode is locked to change type */
204 #endif /* _VFS_VNODE_PRIVATE */
205 #define VI_ONWORKLST 0x00004000 /* On syncer work-list */
206 #ifdef _VFS_VNODE_PRIVATE
207 #define VI_MARKER 0x00008000 /* Dummy marker vnode */
208 #endif /* _VFS_VNODE_PRIVATE */
209 #ifdef _VFS_VNODE_PRIVATE
210 #define VI_CLEAN 0x00080000 /* has been reclaimed */
211 #define VI_CHANGING 0x00100000 /* vnode changes state */
212 #endif /* _VFS_VNODE_PRIVATE */
213
214 /*
215 * The third set are locked by the underlying file system.
216 */
217 #define VU_DIROP 0x01000000 /* LFS: involved in a directory op */
218
219 #define VNODE_FLAGBITS \
220 "\20\1ROOT\2SYSTEM\3ISTTY\4MAPPED\5MPSAFE\6LOCKSWORK\11TEXT\12EXECMAP" \
221 "\13WRMAP\14WRMAPDIRTY\15XLOCK\17ONWORKLST\20MARKER" \
222 "\24CLEAN\25CHANGING\31DIROP"
223
224 #define VSIZENOTSET ((voff_t)-1)
225
226 /*
227 * vnode lock flags
228 */
229 #define LK_SHARED 0x00000001 /* shared lock */
230 #define LK_EXCLUSIVE 0x00000002 /* exclusive lock */
231 #define LK_NOWAIT 0x00000010 /* do not sleep to await lock */
232 #define LK_RETRY 0x00020000 /* vn_lock: retry until locked */
233
234 /*
235 * Vnode attributes. A field value of VNOVAL represents a field whose value
236 * is unavailable (getattr) or which is not to be changed (setattr).
237 */
238 struct vattr {
239 enum vtype va_type; /* vnode type (for create) */
240 mode_t va_mode; /* files access mode and type */
241 nlink_t va_nlink; /* number of references to file */
242 uid_t va_uid; /* owner user id */
243 gid_t va_gid; /* owner group id */
244 dev_t va_fsid; /* file system id (dev for now) */
245 ino_t va_fileid; /* file id */
246 u_quad_t va_size; /* file size in bytes */
247 long va_blocksize; /* blocksize preferred for i/o */
248 struct timespec va_atime; /* time of last access */
249 struct timespec va_mtime; /* time of last modification */
250 struct timespec va_ctime; /* time file changed */
251 struct timespec va_birthtime; /* time file created */
252 u_long va_gen; /* generation number of file */
253 u_long va_flags; /* flags defined for file */
254 dev_t va_rdev; /* device the special file represents */
255 u_quad_t va_bytes; /* bytes of disk space held by file */
256 u_quad_t va_filerev; /* file modification number */
257 u_int va_vaflags; /* operations flags, see below */
258 long va_spare; /* remain quad aligned */
259 };
260
261 /*
262 * Flags for va_vaflags.
263 */
264 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
265 #define VA_EXCLUSIVE 0x02 /* exclusive create request */
266
267 #ifdef _KERNEL
268
269 /*
270 * Flags for ioflag.
271 */
272 #define IO_UNIT 0x00010 /* do I/O as atomic unit */
273 #define IO_APPEND 0x00020 /* append write to end */
274 #define IO_SYNC (0x40|IO_DSYNC) /* sync I/O file integrity completion */
275 #define IO_NODELOCKED 0x00080 /* underlying node already locked */
276 #define IO_NDELAY 0x00100 /* FNDELAY flag set in file table */
277 #define IO_DSYNC 0x00200 /* sync I/O data integrity completion */
278 #define IO_ALTSEMANTICS 0x00400 /* use alternate i/o semantics */
279 #define IO_NORMAL 0x00800 /* operate on regular data */
280 #define IO_EXT 0x01000 /* operate on extended attributes */
281 #define IO_DIRECT 0x02000 /* direct I/O hint */
282 #define IO_JOURNALLOCKED 0x04000 /* journal is already locked */
283 #define IO_ADV_MASK 0x00003 /* access pattern hint */
284
285 #define IO_ADV_SHIFT 0
286 #define IO_ADV_ENCODE(adv) (((adv) << IO_ADV_SHIFT) & IO_ADV_MASK)
287 #define IO_ADV_DECODE(ioflag) (((ioflag) & IO_ADV_MASK) >> IO_ADV_SHIFT)
288
289 /*
290 * Modes.
291 */
292 #define VREAD 00004 /* read, write, execute permissions */
293 #define VWRITE 00002
294 #define VEXEC 00001
295
296 /*
297 * Token indicating no attribute value yet assigned.
298 */
299 #define VNOVAL (-1)
300
301 /*
302 * Convert between vnode types and inode formats (since POSIX.1
303 * defines mode word of stat structure in terms of inode formats).
304 */
305 extern const enum vtype iftovt_tab[];
306 extern const int vttoif_tab[];
307 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
308 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
309 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
310
311 /*
312 * Flags to various vnode functions.
313 */
314 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
315 #define FORCECLOSE 0x0002 /* vflush: force file closeure */
316 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
317 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
318
319 /*
320 * Flags to various vnode operations.
321 */
322 #define REVOKEALL 0x0001 /* revoke: revoke all aliases */
323
324 #define FSYNC_WAIT 0x0001 /* fsync: wait for completion */
325 #define FSYNC_DATAONLY 0x0002 /* fsync: hint: sync file data only */
326 #define FSYNC_RECLAIM 0x0004 /* fsync: hint: vnode is being reclaimed */
327 #define FSYNC_LAZY 0x0008 /* fsync: lazy sync (trickle) */
328 #define FSYNC_NOLOG 0x0010 /* fsync: do not flush the log */
329 #define FSYNC_CACHE 0x0100 /* fsync: flush disk caches too */
330
331 #define UPDATE_WAIT 0x0001 /* update: wait for completion */
332 #define UPDATE_DIROP 0x0002 /* update: hint to fs to wait or not */
333 #define UPDATE_CLOSE 0x0004 /* update: clean up on close */
334
335 #define VDEAD_NOWAIT 0x0001 /* vdead_check: do not sleep */
336
337 void holdrelel(struct vnode *);
338 void vholdl(struct vnode *);
339 void vref(struct vnode *);
340
341 static __inline void holdrele(struct vnode *) __unused;
342 static __inline void vhold(struct vnode *) __unused;
343
344 /*
345 * decrease buf or page ref
346 */
347 static __inline void
holdrele(struct vnode * vp)348 holdrele(struct vnode *vp)
349 {
350
351 mutex_enter(vp->v_interlock);
352 holdrelel(vp);
353 mutex_exit(vp->v_interlock);
354 }
355
356 /*
357 * increase buf or page ref
358 */
359 static __inline void
vhold(struct vnode * vp)360 vhold(struct vnode *vp)
361 {
362
363 mutex_enter(vp->v_interlock);
364 vholdl(vp);
365 mutex_exit(vp->v_interlock);
366 }
367
368 #define NULLVP ((struct vnode *)NULL)
369
370 static __inline void
VN_KNOTE(struct vnode * vp,long hint)371 VN_KNOTE(struct vnode *vp, long hint)
372 {
373
374 mutex_enter(vp->v_interlock);
375 KNOTE(&vp->v_klist, hint);
376 mutex_exit(vp->v_interlock);
377 }
378
379 /*
380 * Global vnode data.
381 */
382 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
383 extern int desiredvnodes; /* number of vnodes desired */
384 extern u_int numvnodes; /* current number of vnodes */
385
386 #endif /* _KERNEL */
387
388
389 /*
390 * Mods for exensibility.
391 */
392
393 /*
394 * Flags for vdesc_flags:
395 */
396 #define VDESC_MAX_VPS 8
397 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
398 #define VDESC_VP0_WILLRELE 0x00000001
399 #define VDESC_VP1_WILLRELE 0x00000002
400 #define VDESC_VP2_WILLRELE 0x00000004
401 #define VDESC_VP3_WILLRELE 0x00000008
402 #define VDESC_VP0_WILLUNLOCK 0x00000100
403 #define VDESC_VP1_WILLUNLOCK 0x00000200
404 #define VDESC_VP2_WILLUNLOCK 0x00000400
405 #define VDESC_VP3_WILLUNLOCK 0x00000800
406 #define VDESC_VP0_WILLPUT 0x00000101
407 #define VDESC_VP1_WILLPUT 0x00000202
408 #define VDESC_VP2_WILLPUT 0x00000404
409 #define VDESC_VP3_WILLPUT 0x00000808
410
411 /*
412 * VDESC_NO_OFFSET is used to identify the end of the offset list
413 * and in places where no such field exists.
414 */
415 #define VDESC_NO_OFFSET -1
416
417 /*
418 * This structure describes the vnode operation taking place.
419 */
420 struct vnodeop_desc {
421 int vdesc_offset; /* offset in vector--first for speed */
422 const char *vdesc_name; /* a readable name for debugging */
423 int vdesc_flags; /* VDESC_* flags */
424
425 /*
426 * These ops are used by bypass routines to map and locate arguments.
427 * Creds and procs are not needed in bypass routines, but sometimes
428 * they are useful to (for example) transport layers.
429 * Nameidata is useful because it has a cred in it.
430 */
431 const int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
432 int vdesc_vpp_offset; /* return vpp location */
433 int vdesc_cred_offset; /* cred location, if any */
434 int vdesc_componentname_offset; /* if any */
435 };
436
437 #ifdef _KERNEL
438
439 /*
440 * Interlock for scanning list of vnodes attached to a mountpoint
441 */
442 extern kmutex_t mntvnode_lock;
443
444 /*
445 * Union filesystem hook for vn_readdir().
446 */
447 extern int (*vn_union_readdir_hook) (struct vnode **, struct file *, struct lwp *);
448
449 /*
450 * Macros for offsets in the vdesc struct.
451 */
452 #define VOPARG_OFFSETOF(type, member) offsetof(type, member)
453 #define VOPARG_OFFSETTO(type,offset,sp) ((type)(((char *)(sp)) + (offset)))
454
455 /*
456 * This structure is used to configure the new vnodeops vector.
457 */
458 struct vnodeopv_entry_desc {
459 const struct vnodeop_desc *opve_op; /* which operation this is */
460 int (*opve_impl)(void *); /* code implementing this operation */
461 };
462
463 struct vnodeopv_desc {
464 /* ptr to the ptr to the vector where op should go */
465 int (***opv_desc_vector_p)(void *);
466 const struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
467 };
468
469 /*
470 * A default routine which just returns an error.
471 */
472 int vn_default_error(void *);
473
474 /*
475 * A generic structure.
476 * This can be used by bypass routines to identify generic arguments.
477 */
478 struct vop_generic_args {
479 struct vnodeop_desc *a_desc;
480 /* other random data follows, presumably */
481 };
482
483 /*
484 * VOCALL calls an op given an ops vector. We break it out because BSD's
485 * vclean changes the ops vector and then wants to call ops with the old
486 * vector.
487 */
488 /*
489 * actually, vclean doesn't use it anymore, but nfs does,
490 * for device specials and fifos.
491 */
492 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
493
494 /*
495 * This call works for vnodes in the kernel.
496 */
497 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
498 #define VDESC(OP) (& __CONCAT(OP,_desc))
499 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
500
501 /* XXX This include should go away */
502 #include <sys/mount.h>
503
504 /*
505 * Finally, include the default set of vnode operations.
506 */
507 #include <sys/vnode_if.h>
508
509 /*
510 * Public vnode manipulation functions.
511 */
512 struct file;
513 struct filedesc;
514 struct nameidata;
515 struct proc;
516 struct stat;
517 struct uio;
518 struct vattr;
519 struct vnode;
520
521 /* see vnode(9) */
522 void vfs_vnode_sysinit(void);
523 int bdevvp(dev_t, struct vnode **);
524 int cdevvp(dev_t, struct vnode **);
525 int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, kauth_cred_t);
526 void vattr_null(struct vattr *);
527 void vdevgone(int, int, int, enum vtype);
528 int vfinddev(dev_t, enum vtype, struct vnode **);
529 int vflush(struct mount *, struct vnode *, int);
530 int vflushbuf(struct vnode *, int);
531 int vget(struct vnode *, int, bool);
532 void vgone(struct vnode *);
533 int vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, bool, int);
534 void vprint(const char *, struct vnode *);
535 void vput(struct vnode *);
536 bool vrecycle(struct vnode *);
537 void vrele(struct vnode *);
538 void vrele_async(struct vnode *);
539 void vrele_flush(void);
540 int vtruncbuf(struct vnode *, daddr_t, bool, int);
541 void vwakeup(struct buf *);
542 int vdead_check(struct vnode *, int);
543 void vrevoke(struct vnode *);
544 struct vnode *
545 vnalloc(struct mount *);
546 void vnfree(struct vnode *);
547 void vremfree(struct vnode *);
548 int vcache_get(struct mount *, const void *, size_t, struct vnode **);
549 int vcache_new(struct mount *, struct vnode *,
550 struct vattr *, kauth_cred_t, struct vnode **);
551 int vcache_rekey_enter(struct mount *, struct vnode *,
552 const void *, size_t, const void *, size_t);
553 void vcache_rekey_exit(struct mount *, struct vnode *,
554 const void *, size_t, const void *, size_t);
555 void vcache_remove(struct mount *, const void *, size_t);
556
557 /* see vnsubr(9) */
558 int vn_bwrite(void *);
559 int vn_close(struct vnode *, int, kauth_cred_t);
560 int vn_isunder(struct vnode *, struct vnode *, struct lwp *);
561 int vn_lock(struct vnode *, int);
562 void vn_markexec(struct vnode *);
563 int vn_marktext(struct vnode *);
564 int vn_open(struct nameidata *, int, int);
565 int vn_rdwr(enum uio_rw, struct vnode *, void *, int, off_t, enum uio_seg,
566 int, kauth_cred_t, size_t *, struct lwp *);
567 int vn_readdir(struct file *, char *, int, u_int, int *, struct lwp *,
568 off_t **, int *);
569 int vn_stat(struct vnode *, struct stat *);
570 int vn_kqfilter(struct file *, struct knote *);
571 int vn_writechk(struct vnode *);
572 int vn_openchk(struct vnode *, kauth_cred_t, int);
573 int vn_extattr_get(struct vnode *, int, int, const char *, size_t *,
574 void *, struct lwp *);
575 int vn_extattr_set(struct vnode *, int, int, const char *, size_t,
576 const void *, struct lwp *);
577 int vn_extattr_rm(struct vnode *, int, int, const char *, struct lwp *);
578 void vn_ra_allocctx(struct vnode *);
579 int vn_fifo_bypass(void *);
580
581 /* initialise global vnode management */
582 void vntblinit(void);
583
584 /* misc stuff */
585 void sched_sync(void *);
586 void vn_syncer_add_to_worklist(struct vnode *, int);
587 void vn_syncer_remove_from_worklist(struct vnode *);
588 int dorevoke(struct vnode *, kauth_cred_t);
589 int rawdev_mounted(struct vnode *, struct vnode **);
590 uint8_t vtype2dt(enum vtype);
591
592 /* see vfssubr(9) */
593 void vfs_getnewfsid(struct mount *);
594 int vfs_drainvnodes(long);
595 void vfs_timestamp(struct timespec *);
596 #if defined(DDB) || defined(DEBUGPRINT)
597 void vfs_vnode_print(struct vnode *, int, void (*)(const char *, ...)
598 __printflike(1, 2));
599 void vfs_mount_print(struct mount *, int, void (*)(const char *, ...)
600 __printflike(1, 2));
601 #endif /* DDB */
602
603 #endif /* _KERNEL */
604
605 #endif /* !_SYS_VNODE_H_ */
606