1 /* $NetBSD: vnode.h,v 1.263 2016/06/03 15:15:49 dholland 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 #include <sys/time.h>
69
70 /* XXX: clean up includes later */
71 #include <uvm/uvm_param.h> /* XXX */
72 #if defined(_KERNEL) || defined(_KMEMUSER)
73 #include <uvm/uvm_pglist.h> /* XXX */
74 #include <uvm/uvm_object.h> /* XXX */
75 #include <uvm/uvm_extern.h> /* XXX */
76
77 struct namecache;
78 struct uvm_ractx;
79 #endif
80
81 /*
82 * The vnode is the focus of all file activity in UNIX. There is a
83 * unique vnode allocated for each active file, each current directory,
84 * each mounted-on file, text file, and the root.
85 */
86
87 /*
88 * Vnode types. VNON means no type.
89 */
90 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
91
92 #define VNODE_TYPES \
93 "VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD"
94
95 /*
96 * Vnode tag types.
97 * These are for the benefit of external programs only (e.g., pstat)
98 * and should NEVER be inspected by the kernel.
99 */
100 enum vtagtype {
101 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS,
102 VT_FDESC, VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS,
103 VT_AFS, VT_ISOFS, VT_UNION, VT_ADOSFS, VT_EXT2FS, VT_CODA,
104 VT_FILECORE, VT_NTFS, VT_VFS, VT_OVERLAY, VT_SMBFS, VT_PTYFS,
105 VT_TMPFS, VT_UDF, VT_SYSVBFS, VT_PUFFS, VT_HFS, VT_EFS, VT_ZFS,
106 VT_RUMP, VT_NILFS, VT_V7FS, VT_CHFS
107 };
108
109 #define VNODE_TAGS \
110 "VT_NON", "VT_UFS", "VT_NFS", "VT_MFS", "VT_MSDOSFS", "VT_LFS", "VT_LOFS", \
111 "VT_FDESC", "VT_PORTAL", "VT_NULL", "VT_UMAP", "VT_KERNFS", "VT_PROCFS", \
112 "VT_AFS", "VT_ISOFS", "VT_UNION", "VT_ADOSFS", "VT_EXT2FS", "VT_CODA", \
113 "VT_FILECORE", "VT_NTFS", "VT_VFS", "VT_OVERLAY", "VT_SMBFS", "VT_PTYFS", \
114 "VT_TMPFS", "VT_UDF", "VT_SYSVBFS", "VT_PUFFS", "VT_HFS", "VT_EFS", \
115 "VT_ZFS", "VT_RUMP", "VT_NILFS", "VT_V7FS", "VT_CHFS"
116
117 #if defined(_KERNEL) || defined(_KMEMUSER)
118 struct vnode;
119 struct buf;
120
121 LIST_HEAD(buflists, buf);
122 TAILQ_HEAD(vnodelst, vnode);
123
124 /*
125 * Reading or writing any of these items requires holding the appropriate
126 * lock. Field markings and the corresponding locks:
127 *
128 * : stable, reference to the vnode is required
129 * f vnode_free_list_lock, or vrele_lock for vrele_list
130 * i v_interlock
131 * m mntvnode_lock
132 * n namecache_lock
133 * s syncer_data_lock
134 * u locked by underlying filesystem
135 * v vnode lock
136 * x v_interlock + bufcache_lock to modify, either to inspect
137 *
138 * Each underlying filesystem allocates its own private area and hangs
139 * it from v_data.
140 */
141 struct vnode {
142 struct uvm_object v_uobj; /* i: the VM object */
143 kcondvar_t v_cv; /* i: synchronization */
144 voff_t v_size; /* i: size of file */
145 voff_t v_writesize; /* i: new size after write */
146 int v_iflag; /* i: VI_* flags */
147 int v_vflag; /* v: VV_* flags */
148 int v_uflag; /* u: VU_* flags */
149 int v_numoutput; /* i: # of pending writes */
150 int v_writecount; /* i: ref count of writers */
151 int v_holdcnt; /* i: page & buffer refs */
152 int v_synclist_slot; /* s: synclist slot index */
153 struct mount *v_mount; /* v: ptr to vfs we are in */
154 int (**v_op)(void *); /* :: vnode operations vector */
155 TAILQ_ENTRY(vnode) v_freelist; /* f: vnode freelist */
156 struct vnodelst *v_freelisthd; /* f: which freelist? */
157 TAILQ_ENTRY(vnode) v_mntvnodes; /* m: vnodes for mount point */
158 struct buflists v_cleanblkhd; /* x: clean blocklist head */
159 struct buflists v_dirtyblkhd; /* x: dirty blocklist head */
160 TAILQ_ENTRY(vnode) v_synclist; /* s: vnodes with dirty bufs */
161 LIST_HEAD(, namecache) v_dnclist; /* n: namecaches (children) */
162 LIST_HEAD(, namecache) v_nclist; /* n: namecaches (parent) */
163 union {
164 struct mount *vu_mountedhere;/* v: ptr to vfs (VDIR) */
165 struct socket *vu_socket; /* v: unix ipc (VSOCK) */
166 struct specnode *vu_specnode; /* v: device (VCHR, VBLK) */
167 struct fifoinfo *vu_fifoinfo; /* v: fifo (VFIFO) */
168 struct uvm_ractx *vu_ractx; /* i: read-ahead ctx (VREG) */
169 } v_un;
170 enum vtype v_type; /* :: vnode type */
171 enum vtagtype v_tag; /* :: type of underlying data */
172 krwlock_t v_lock; /* v: lock for this vnode */
173 void *v_data; /* :: private data for fs */
174 struct klist v_klist; /* i: notes attached to vnode */
175 };
176 #define v_usecount v_uobj.uo_refs
177 #define v_interlock v_uobj.vmobjlock
178 #define v_mountedhere v_un.vu_mountedhere
179 #define v_socket v_un.vu_socket
180 #define v_specnode v_un.vu_specnode
181 #define v_fifoinfo v_un.vu_fifoinfo
182 #define v_ractx v_un.vu_ractx
183
184 typedef struct vnodelst vnodelst_t;
185 typedef struct vnode vnode_t;
186 #endif
187
188 /*
189 * Vnode flags. The first set are locked by vnode lock or are stable.
190 * VSYSTEM is only used to skip vflush()ing quota files. VISTTY is used
191 * when reading dead vnodes.
192 */
193 #define VV_ROOT 0x00000001 /* root of its file system */
194 #define VV_SYSTEM 0x00000002 /* vnode being used by kernel */
195 #define VV_ISTTY 0x00000004 /* vnode represents a tty */
196 #define VV_MAPPED 0x00000008 /* vnode might have user mappings */
197 #define VV_MPSAFE 0x00000010 /* file system code is MP safe */
198 #define VV_LOCKSWORK 0x00000020 /* FS supports locking discipline */
199
200 /*
201 * The second set are locked by vp->v_interlock.
202 */
203 #define VI_TEXT 0x00000100 /* vnode is a pure text prototype */
204 #define VI_EXECMAP 0x00000200 /* might have PROT_EXEC mappings */
205 #define VI_WRMAP 0x00000400 /* might have PROT_WRITE u. mappings */
206 #define VI_WRMAPDIRTY 0x00000800 /* might have dirty pages */
207 #define VI_ONWORKLST 0x00004000 /* On syncer work-list */
208
209 /*
210 * The third set are locked by the underlying file system.
211 */
212 #define VU_DIROP 0x01000000 /* LFS: involved in a directory op */
213
214 #define VNODE_FLAGBITS \
215 "\20\1ROOT\2SYSTEM\3ISTTY\4MAPPED\5MPSAFE\6LOCKSWORK\11TEXT\12EXECMAP" \
216 "\13WRMAP\14WRMAPDIRTY\17ONWORKLST\31DIROP"
217
218 #define VSIZENOTSET ((voff_t)-1)
219
220 /*
221 * vnode lock flags
222 */
223 #define LK_SHARED 0x00000001 /* shared lock */
224 #define LK_EXCLUSIVE 0x00000002 /* exclusive lock */
225 #define LK_NOWAIT 0x00000010 /* do not sleep to await lock */
226 #define LK_RETRY 0x00020000 /* vn_lock: retry until locked */
227
228 /*
229 * Vnode attributes. A field value of VNOVAL represents a field whose value
230 * is unavailable (getattr) or which is not to be changed (setattr).
231 */
232 struct vattr {
233 enum vtype va_type; /* vnode type (for create) */
234 mode_t va_mode; /* files access mode and type */
235 nlink_t va_nlink; /* number of references to file */
236 uid_t va_uid; /* owner user id */
237 gid_t va_gid; /* owner group id */
238 dev_t va_fsid; /* file system id (dev for now) */
239 ino_t va_fileid; /* file id */
240 u_quad_t va_size; /* file size in bytes */
241 long va_blocksize; /* blocksize preferred for i/o */
242 struct timespec va_atime; /* time of last access */
243 struct timespec va_mtime; /* time of last modification */
244 struct timespec va_ctime; /* time file changed */
245 struct timespec va_birthtime; /* time file created */
246 u_long va_gen; /* generation number of file */
247 u_long va_flags; /* flags defined for file */
248 dev_t va_rdev; /* device the special file represents */
249 u_quad_t va_bytes; /* bytes of disk space held by file */
250 u_quad_t va_filerev; /* file modification number */
251 unsigned int va_vaflags; /* operations flags, see below */
252 long va_spare; /* remain quad aligned */
253 };
254
255 /*
256 * Flags for va_vaflags.
257 */
258 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
259 #define VA_EXCLUSIVE 0x02 /* exclusive create request */
260
261 #ifdef _KERNEL
262
263 /*
264 * Flags for ioflag.
265 */
266 #define IO_UNIT 0x00010 /* do I/O as atomic unit */
267 #define IO_APPEND 0x00020 /* append write to end */
268 #define IO_SYNC (0x40|IO_DSYNC) /* sync I/O file integrity completion */
269 #define IO_NODELOCKED 0x00080 /* underlying node already locked */
270 #define IO_NDELAY 0x00100 /* FNDELAY flag set in file table */
271 #define IO_DSYNC 0x00200 /* sync I/O data integrity completion */
272 #define IO_ALTSEMANTICS 0x00400 /* use alternate i/o semantics */
273 #define IO_NORMAL 0x00800 /* operate on regular data */
274 #define IO_EXT 0x01000 /* operate on extended attributes */
275 #define IO_DIRECT 0x02000 /* direct I/O hint */
276 #define IO_JOURNALLOCKED 0x04000 /* journal is already locked */
277 #define IO_ADV_MASK 0x00003 /* access pattern hint */
278
279 #define IO_ADV_SHIFT 0
280 #define IO_ADV_ENCODE(adv) (((adv) << IO_ADV_SHIFT) & IO_ADV_MASK)
281 #define IO_ADV_DECODE(ioflag) (((ioflag) & IO_ADV_MASK) >> IO_ADV_SHIFT)
282
283 /*
284 * Modes.
285 */
286 #define VREAD 00004 /* read, write, execute permissions */
287 #define VWRITE 00002
288 #define VEXEC 00001
289
290 /*
291 * Token indicating no attribute value yet assigned.
292 */
293 #define VNOVAL (-1)
294
295 /*
296 * Convert between vnode types and inode formats (since POSIX.1
297 * defines mode word of stat structure in terms of inode formats).
298 */
299 extern const enum vtype iftovt_tab[];
300 extern const int vttoif_tab[];
301 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
302 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
303 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
304
305 /*
306 * Flags to various vnode functions.
307 */
308 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
309 #define FORCECLOSE 0x0002 /* vflush: force file closeure */
310 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
311 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
312
313 /*
314 * Flags to various vnode operations.
315 */
316 #define REVOKEALL 0x0001 /* revoke: revoke all aliases */
317
318 #define FSYNC_WAIT 0x0001 /* fsync: wait for completion */
319 #define FSYNC_DATAONLY 0x0002 /* fsync: hint: sync file data only */
320 #define FSYNC_RECLAIM 0x0004 /* fsync: hint: vnode is being reclaimed */
321 #define FSYNC_LAZY 0x0008 /* fsync: lazy sync (trickle) */
322 #define FSYNC_NOLOG 0x0010 /* fsync: do not flush the log */
323 #define FSYNC_CACHE 0x0100 /* fsync: flush disk caches too */
324
325 #define UPDATE_WAIT 0x0001 /* update: wait for completion */
326 #define UPDATE_DIROP 0x0002 /* update: hint to fs to wait or not */
327 #define UPDATE_CLOSE 0x0004 /* update: clean up on close */
328
329 #define VDEAD_NOWAIT 0x0001 /* vdead_check: do not sleep */
330
331 void holdrelel(struct vnode *);
332 void vholdl(struct vnode *);
333 void vref(struct vnode *);
334
335 static __inline void holdrele(struct vnode *) __unused;
336 static __inline void vhold(struct vnode *) __unused;
337
338 /*
339 * decrease buf or page ref
340 */
341 static __inline void
holdrele(struct vnode * vp)342 holdrele(struct vnode *vp)
343 {
344
345 mutex_enter(vp->v_interlock);
346 holdrelel(vp);
347 mutex_exit(vp->v_interlock);
348 }
349
350 /*
351 * increase buf or page ref
352 */
353 static __inline void
vhold(struct vnode * vp)354 vhold(struct vnode *vp)
355 {
356
357 mutex_enter(vp->v_interlock);
358 vholdl(vp);
359 mutex_exit(vp->v_interlock);
360 }
361
362 #define NULLVP ((struct vnode *)NULL)
363
364 static __inline void
VN_KNOTE(struct vnode * vp,long hint)365 VN_KNOTE(struct vnode *vp, long hint)
366 {
367
368 mutex_enter(vp->v_interlock);
369 KNOTE(&vp->v_klist, hint);
370 mutex_exit(vp->v_interlock);
371 }
372
373 /*
374 * Global vnode data.
375 */
376 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
377 extern int desiredvnodes; /* number of vnodes desired */
378 extern unsigned int numvnodes; /* current number of vnodes */
379
380 #endif /* _KERNEL */
381
382
383 /*
384 * Mods for exensibility.
385 */
386
387 /*
388 * Flags for vdesc_flags:
389 */
390 #define VDESC_MAX_VPS 8
391 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
392 #define VDESC_VP0_WILLRELE 0x00000001
393 #define VDESC_VP1_WILLRELE 0x00000002
394 #define VDESC_VP2_WILLRELE 0x00000004
395 #define VDESC_VP3_WILLRELE 0x00000008
396 #define VDESC_VP0_WILLUNLOCK 0x00000100
397 #define VDESC_VP1_WILLUNLOCK 0x00000200
398 #define VDESC_VP2_WILLUNLOCK 0x00000400
399 #define VDESC_VP3_WILLUNLOCK 0x00000800
400 #define VDESC_VP0_WILLPUT 0x00000101
401 #define VDESC_VP1_WILLPUT 0x00000202
402 #define VDESC_VP2_WILLPUT 0x00000404
403 #define VDESC_VP3_WILLPUT 0x00000808
404
405 /*
406 * VDESC_NO_OFFSET is used to identify the end of the offset list
407 * and in places where no such field exists.
408 */
409 #define VDESC_NO_OFFSET -1
410
411 /*
412 * This structure describes the vnode operation taking place.
413 */
414 struct vnodeop_desc {
415 int vdesc_offset; /* offset in vector--first for speed */
416 const char *vdesc_name; /* a readable name for debugging */
417 int vdesc_flags; /* VDESC_* flags */
418
419 /*
420 * These ops are used by bypass routines to map and locate arguments.
421 * Creds and procs are not needed in bypass routines, but sometimes
422 * they are useful to (for example) transport layers.
423 * Nameidata is useful because it has a cred in it.
424 */
425 const int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
426 int vdesc_vpp_offset; /* return vpp location */
427 int vdesc_cred_offset; /* cred location, if any */
428 int vdesc_componentname_offset; /* if any */
429 };
430
431 #ifdef _KERNEL
432
433 /*
434 * Interlock for scanning list of vnodes attached to a mountpoint
435 */
436 extern kmutex_t mntvnode_lock;
437
438 /*
439 * Union filesystem hook for vn_readdir().
440 */
441 extern int (*vn_union_readdir_hook) (struct vnode **, struct file *, struct lwp *);
442
443 /*
444 * Macros for offsets in the vdesc struct.
445 */
446 #define VOPARG_OFFSETOF(type, member) offsetof(type, member)
447 #define VOPARG_OFFSETTO(type,offset,sp) ((type)(((char *)(sp)) + (offset)))
448
449 /*
450 * This structure is used to configure the new vnodeops vector.
451 */
452 struct vnodeopv_entry_desc {
453 const struct vnodeop_desc *opve_op; /* which operation this is */
454 int (*opve_impl)(void *); /* code implementing this operation */
455 };
456
457 struct vnodeopv_desc {
458 /* ptr to the ptr to the vector where op should go */
459 int (***opv_desc_vector_p)(void *);
460 const struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
461 };
462
463 /*
464 * A default routine which just returns an error.
465 */
466 int vn_default_error(void *);
467
468 /*
469 * A generic structure.
470 * This can be used by bypass routines to identify generic arguments.
471 */
472 struct vop_generic_args {
473 struct vnodeop_desc *a_desc;
474 /* other random data follows, presumably */
475 };
476
477 /*
478 * VOCALL calls an op given an ops vector. We break it out because BSD's
479 * vclean changes the ops vector and then wants to call ops with the old
480 * vector.
481 */
482 /*
483 * actually, vclean doesn't use it anymore, but nfs does,
484 * for device specials and fifos.
485 */
486 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
487
488 /*
489 * This call works for vnodes in the kernel.
490 */
491 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
492 #define VDESC(OP) (& __CONCAT(OP,_desc))
493 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
494
495 /* XXX This include should go away */
496 #include <sys/mount.h>
497
498 /*
499 * Finally, include the default set of vnode operations.
500 */
501 #include <sys/vnode_if.h>
502
503 /*
504 * Public vnode manipulation functions.
505 */
506 struct file;
507 struct filedesc;
508 struct nameidata;
509 struct proc;
510 struct stat;
511 struct uio;
512 struct vattr;
513 struct vnode;
514
515 /* see vnode(9) */
516 void vfs_vnode_sysinit(void);
517 int bdevvp(dev_t, struct vnode **);
518 int cdevvp(dev_t, struct vnode **);
519 int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, kauth_cred_t);
520 void vattr_null(struct vattr *);
521 void vdevgone(int, int, int, enum vtype);
522 int vfinddev(dev_t, enum vtype, struct vnode **);
523 int vflush(struct mount *, struct vnode *, int);
524 int vflushbuf(struct vnode *, int);
525 int vget(struct vnode *, int, bool);
526 void vgone(struct vnode *);
527 int vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, bool, int);
528 void vprint(const char *, struct vnode *);
529 void vput(struct vnode *);
530 bool vrecycle(struct vnode *);
531 void vrele(struct vnode *);
532 void vrele_async(struct vnode *);
533 void vrele_flush(void);
534 int vtruncbuf(struct vnode *, daddr_t, bool, int);
535 void vwakeup(struct buf *);
536 int vdead_check(struct vnode *, int);
537 void vrevoke(struct vnode *);
538 void vremfree(struct vnode *);
539 int vcache_get(struct mount *, const void *, size_t, struct vnode **);
540 int vcache_new(struct mount *, struct vnode *,
541 struct vattr *, kauth_cred_t, struct vnode **);
542 int vcache_rekey_enter(struct mount *, struct vnode *,
543 const void *, size_t, const void *, size_t);
544 void vcache_rekey_exit(struct mount *, struct vnode *,
545 const void *, size_t, const void *, size_t);
546 void vcache_remove(struct mount *, const void *, size_t);
547
548 /* see vnsubr(9) */
549 int vn_bwrite(void *);
550 int vn_close(struct vnode *, int, kauth_cred_t);
551 int vn_isunder(struct vnode *, struct vnode *, struct lwp *);
552 int vn_lock(struct vnode *, int);
553 void vn_markexec(struct vnode *);
554 int vn_marktext(struct vnode *);
555 int vn_open(struct nameidata *, int, int);
556 int vn_rdwr(enum uio_rw, struct vnode *, void *, int, off_t, enum uio_seg,
557 int, kauth_cred_t, size_t *, struct lwp *);
558 int vn_readdir(struct file *, char *, int, unsigned int, int *,
559 struct lwp *, off_t **, int *);
560 int vn_stat(struct vnode *, struct stat *);
561 int vn_kqfilter(struct file *, struct knote *);
562 int vn_writechk(struct vnode *);
563 int vn_openchk(struct vnode *, kauth_cred_t, int);
564 int vn_extattr_get(struct vnode *, int, int, const char *, size_t *,
565 void *, struct lwp *);
566 int vn_extattr_set(struct vnode *, int, int, const char *, size_t,
567 const void *, struct lwp *);
568 int vn_extattr_rm(struct vnode *, int, int, const char *, struct lwp *);
569 void vn_ra_allocctx(struct vnode *);
570 int vn_fifo_bypass(void *);
571
572 /* initialise global vnode management */
573 void vntblinit(void);
574
575 /* misc stuff */
576 void sched_sync(void *);
577 void vn_syncer_add_to_worklist(struct vnode *, int);
578 void vn_syncer_remove_from_worklist(struct vnode *);
579 int dorevoke(struct vnode *, kauth_cred_t);
580 int rawdev_mounted(struct vnode *, struct vnode **);
581 uint8_t vtype2dt(enum vtype);
582
583 /* see vfssubr(9) */
584 void vfs_getnewfsid(struct mount *);
585 int vfs_drainvnodes(long);
586 void vfs_timestamp(struct timespec *);
587 #if defined(DDB) || defined(DEBUGPRINT)
588 void vfs_vnode_print(struct vnode *, int, void (*)(const char *, ...)
589 __printflike(1, 2));
590 void vfs_mount_print(struct mount *, int, void (*)(const char *, ...)
591 __printflike(1, 2));
592 #endif /* DDB */
593
594 #ifdef _VFS_VNODE_PRIVATE
595 /*
596 * Private vnode manipulation functions.
597 */
598 struct vnode *
599 vnalloc_marker(struct mount *);
600 void vnfree_marker(vnode_t *);
601 bool vnis_marker(vnode_t *);
602 void vcache_print(vnode_t *, const char *,
603 void (*)(const char *, ...) __printflike(1, 2));
604 #endif /* _VFS_VNODE_PRIVATE */
605
606 #endif /* _KERNEL */
607
608 #endif /* !_SYS_VNODE_H_ */
609