FreeBSD/Linux Kernel Cross Reference
sys/sys/vnode.h
1 /*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)vnode.h 8.7 (Berkeley) 2/4/94
34 * $FreeBSD$
35 */
36
37 #ifndef _SYS_VNODE_H_
38 #define _SYS_VNODE_H_
39
40 #include <sys/queue.h>
41 #include <sys/select.h>
42 #include <sys/uio.h>
43
44 #include <machine/lock.h>
45
46 /*
47 * The vnode is the focus of all file activity in UNIX. There is a
48 * unique vnode allocated for each active file, each current directory,
49 * each mounted-on file, text file, and the root.
50 */
51
52 /*
53 * Vnode types. VNON means no type.
54 */
55 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
56
57 /*
58 * Vnode tag types.
59 * These are for the benefit of external programs only (e.g., pstat)
60 * and should NEVER be inspected by the kernel.
61 */
62 enum vtagtype {
63 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
64 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
65 VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS
66 };
67
68 /*
69 * Each underlying filesystem allocates its own private area and hangs
70 * it from v_data. If non-null, this area is freed in getnewvnode().
71 */
72 TAILQ_HEAD(buflists, buf);
73
74 typedef int vop_t __P((void *));
75 struct namecache;
76
77 /*
78 * Reading or writing any of these items requires holding the appropriate lock.
79 * v_freelist is locked by the global vnode_free_list simple lock.
80 * v_mntvnodes is locked by the global mntvnodes simple lock.
81 * v_flag, v_usecount, v_holdcount and v_writecount are
82 * locked by the v_interlock simple lock.
83 * v_pollinfo is locked by the lock contained inside it.
84 */
85 struct vnode {
86 u_long v_flag; /* vnode flags (see below) */
87 int v_usecount; /* reference count of users */
88 int v_writecount; /* reference count of writers */
89 int v_holdcnt; /* page & buffer references */
90 daddr_t v_lastr; /* last read (read-ahead) */
91 u_long v_id; /* capability identifier */
92 struct mount *v_mount; /* ptr to vfs we are in */
93 vop_t **v_op; /* vnode operations vector */
94 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
95 LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */
96 struct buflists v_cleanblkhd; /* clean blocklist head */
97 struct buflists v_dirtyblkhd; /* dirty blocklist head */
98 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
99 long v_numoutput; /* num of writes in progress */
100 enum vtype v_type; /* vnode type */
101 union {
102 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
103 struct socket *vu_socket; /* unix ipc (VSOCK) */
104 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
105 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
106 } v_un;
107 struct nqlease *v_lease; /* Soft reference to lease */
108 daddr_t v_lastw; /* last write (write cluster) */
109 daddr_t v_cstart; /* start block of cluster */
110 daddr_t v_lasta; /* last allocation */
111 int v_clen; /* length of current cluster */
112 int v_maxio; /* maximum I/O cluster size */
113 struct vm_object *v_object; /* Place to store VM object */
114 struct simplelock v_interlock; /* lock on usecount and flag */
115 struct lock *v_vnlock; /* used for non-locking fs's */
116 enum vtagtype v_tag; /* type of underlying data */
117 void *v_data; /* private data for fs */
118 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */
119 TAILQ_HEAD(cdst, namecache) v_cache_dst; /* Cache entries to us */
120 int v_cache_dst_count; /* number of cache entries pointing to us */
121 struct vnode *v_dd; /* .. vnode */
122 u_long v_ddid; /* .. capability identifier */
123 struct {
124 struct simplelock vpi_lock; /* lock to protect below */
125 struct selinfo vpi_selinfo; /* identity of poller(s) */
126 short vpi_events; /* what they are looking for */
127 short vpi_revents; /* what has happened */
128 } v_pollinfo;
129 #ifdef DEBUG_LOCKS
130 const char *filename; /* Source file doing locking */
131 int line; /* Line number doing locking */
132 #endif
133 };
134 #define v_mountedhere v_un.vu_mountedhere
135 #define v_socket v_un.vu_socket
136 #define v_specinfo v_un.vu_specinfo
137 #define v_fifoinfo v_un.vu_fifoinfo
138
139 #define VN_POLLEVENT(vp, events) \
140 do { \
141 if ((vp)->v_pollinfo.vpi_events & (events)) \
142 vn_pollevent((vp), (events)); \
143 } while (0)
144
145 /*
146 * Vnode flags.
147 */
148 #define VROOT 0x00001 /* root of its file system */
149 #define VTEXT 0x00002 /* vnode is a pure text prototype */
150 #define VSYSTEM 0x00004 /* vnode being used by kernel */
151 #define VISTTY 0x00008 /* vnode represents a tty */
152 #define VXLOCK 0x00100 /* vnode is locked to change underlying type */
153 #define VXWANT 0x00200 /* process is waiting for vnode */
154 #define VBWAIT 0x00400 /* waiting for output to complete */
155 #define VALIASED 0x00800 /* vnode has an alias */
156 #define VDIROP 0x01000 /* LFS: vnode is involved in a directory op */
157 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */
158 #define VNINACT 0x04000 /* LFS: skip ufs_inactive() in lfs_vunref */
159 #define VAGE 0x08000 /* Insert vnode at head of free list */
160 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */
161 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */
162 #define VDOOMED 0x40000 /* This vnode is being recycled */
163 #define VFREE 0x80000 /* This vnode is on the freelist */
164 #define VTBFREE 0x100000 /* This vnode is on the to-be-freelist */
165 #define VONWORKLST 0x200000 /* On syncer work-list */
166 #define VMOUNT 0x400000 /* Mount in progress */
167
168 /*
169 * Vnode attributes. A field value of VNOVAL represents a field whose value
170 * is unavailable (getattr) or which is not to be changed (setattr).
171 */
172 struct vattr {
173 enum vtype va_type; /* vnode type (for create) */
174 u_short va_mode; /* files access mode and type */
175 short va_nlink; /* number of references to file */
176 uid_t va_uid; /* owner user id */
177 gid_t va_gid; /* owner group id */
178 long va_fsid; /* file system id (dev for now) */
179 long va_fileid; /* file id */
180 u_quad_t va_size; /* file size in bytes */
181 long va_blocksize; /* blocksize preferred for i/o */
182 struct timespec va_atime; /* time of last access */
183 struct timespec va_mtime; /* time of last modification */
184 struct timespec va_ctime; /* time file changed */
185 u_long va_gen; /* generation number of file */
186 u_long va_flags; /* flags defined for file */
187 dev_t va_rdev; /* device the special file represents */
188 u_quad_t va_bytes; /* bytes of disk space held by file */
189 u_quad_t va_filerev; /* file modification number */
190 u_int va_vaflags; /* operations flags, see below */
191 long va_spare; /* remain quad aligned */
192 };
193
194 /*
195 * Flags for va_vaflags.
196 */
197 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
198 #define VA_EXCLUSIVE 0x02 /* exclusive create request */
199
200 /*
201 * Flags for ioflag.
202 */
203 #define IO_UNIT 0x01 /* do I/O as atomic unit */
204 #define IO_APPEND 0x02 /* append write to end */
205 #define IO_SYNC 0x04 /* do I/O synchronously */
206 #define IO_NODELOCKED 0x08 /* underlying node already locked */
207 #define IO_NDELAY 0x10 /* FNDELAY flag set in file table */
208 #define IO_VMIO 0x20 /* data already in VMIO space */
209 #define IO_INVAL 0x40 /* invalidate after I/O */
210
211 /*
212 * Modes. Some values same as Ixxx entries from inode.h for now.
213 */
214 #define VSUID 04000 /* set user id on execution */
215 #define VSGID 02000 /* set group id on execution */
216 #define VSVTX 01000 /* save swapped text even after use */
217 #define VREAD 00400 /* read, write, execute permissions */
218 #define VWRITE 00200
219 #define VEXEC 00100
220
221 /*
222 * Token indicating no attribute value yet assigned.
223 */
224 #define VNOVAL (-1)
225
226 #ifdef KERNEL
227
228 #ifdef MALLOC_DECLARE
229 MALLOC_DECLARE(M_VNODE);
230 #endif
231
232 /*
233 * Convert between vnode types and inode formats (since POSIX.1
234 * defines mode word of stat structure in terms of inode formats).
235 */
236 extern enum vtype iftovt_tab[];
237 extern int vttoif_tab[];
238 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
239 #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
240 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
241
242 /*
243 * Flags to various vnode functions.
244 */
245 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
246 #define FORCECLOSE 0x0002 /* vflush: force file closure */
247 #define WRITECLOSE 0x0004 /* vflush: only close writable files */
248 #define DOCLOSE 0x0008 /* vclean: close active files */
249 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */
250 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
251
252 #define VREF(vp) vref(vp)
253
254
255 #ifdef DIAGNOSTIC
256 #define VATTR_NULL(vap) vattr_null(vap)
257 #else
258 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
259 #endif /* DIAGNOSTIC */
260
261 #define NULLVP ((struct vnode *)NULL)
262
263 #if defined(VFS_LKM) && !defined(KLD_MODULE)
264 #define VNODEOP_SET(f) DATA_SET(MODVNOPS,f)
265 #else
266 #define VNODEOP_SET(f) \
267 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \
268 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f);
269 #endif
270
271 /*
272 * Global vnode data.
273 */
274 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
275 extern int desiredvnodes; /* number of vnodes desired */
276 extern time_t syncdelay; /* time to delay syncing vnodes */
277 extern int rushjob; /* # of slots filesys_syncer should run ASAP */
278 extern struct vm_zone *namei_zone;
279 extern int prtactive; /* nonzero to call vprint() */
280 extern struct vattr va_null; /* predefined null vattr structure */
281 extern int vfs_ioopt;
282
283 /*
284 * Macro/function to check for client cache inconsistency w.r.t. leasing.
285 */
286 #define LEASE_READ 0x1 /* Check lease for readers */
287 #define LEASE_WRITE 0x2 /* Check lease for modifiers */
288
289
290 extern void (*lease_updatetime) __P((int deltat));
291
292 #define VSHOULDFREE(vp) \
293 (!((vp)->v_flag & (VFREE|VDOOMED)) && \
294 !(vp)->v_holdcnt && !(vp)->v_usecount && \
295 (!(vp)->v_object || \
296 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
297
298 #define VSHOULDBUSY(vp) \
299 (((vp)->v_flag & (VFREE|VTBFREE)) && \
300 ((vp)->v_holdcnt || (vp)->v_usecount))
301
302 #endif /* KERNEL */
303
304
305 /*
306 * Mods for extensibility.
307 */
308
309 /*
310 * Flags for vdesc_flags:
311 */
312 #define VDESC_MAX_VPS 16
313 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
314 #define VDESC_VP0_WILLRELE 0x0001
315 #define VDESC_VP1_WILLRELE 0x0002
316 #define VDESC_VP2_WILLRELE 0x0004
317 #define VDESC_VP3_WILLRELE 0x0008
318 #define VDESC_NOMAP_VPP 0x0100
319 #define VDESC_VPP_WILLRELE 0x0200
320
321 /*
322 * VDESC_NO_OFFSET is used to identify the end of the offset list
323 * and in places where no such field exists.
324 */
325 #define VDESC_NO_OFFSET -1
326
327 /*
328 * This structure describes the vnode operation taking place.
329 */
330 struct vnodeop_desc {
331 int vdesc_offset; /* offset in vector--first for speed */
332 char *vdesc_name; /* a readable name for debugging */
333 int vdesc_flags; /* VDESC_* flags */
334
335 /*
336 * These ops are used by bypass routines to map and locate arguments.
337 * Creds and procs are not needed in bypass routines, but sometimes
338 * they are useful to (for example) transport layers.
339 * Nameidata is useful because it has a cred in it.
340 */
341 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
342 int vdesc_vpp_offset; /* return vpp location */
343 int vdesc_cred_offset; /* cred location, if any */
344 int vdesc_proc_offset; /* proc location, if any */
345 int vdesc_componentname_offset; /* if any */
346 /*
347 * Finally, we've got a list of private data (about each operation)
348 * for each transport layer. (Support to manage this list is not
349 * yet part of BSD.)
350 */
351 caddr_t *vdesc_transports;
352 };
353
354 #ifdef KERNEL
355 /*
356 * A list of all the operation descs.
357 */
358 extern struct vnodeop_desc *vnodeop_descs[];
359
360 /*
361 * Interlock for scanning list of vnodes attached to a mountpoint
362 */
363 extern struct simplelock mntvnode_slock;
364
365 /*
366 * This macro is very helpful in defining those offsets in the vdesc struct.
367 *
368 * This is stolen from X11R4. I ignored all the fancy stuff for
369 * Crays, so if you decide to port this to such a serious machine,
370 * you might want to consult Intrinsic.h's XtOffset{,Of,To}.
371 */
372 #define VOPARG_OFFSET(p_type,field) \
373 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
374 #define VOPARG_OFFSETOF(s_type,field) \
375 VOPARG_OFFSET(s_type*,field)
376 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
377 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
378
379
380 /*
381 * This structure is used to configure the new vnodeops vector.
382 */
383 struct vnodeopv_entry_desc {
384 struct vnodeop_desc *opve_op; /* which operation this is */
385 vop_t *opve_impl; /* code implementing this operation */
386 };
387 struct vnodeopv_desc {
388 /* ptr to the ptr to the vector where op should go */
389 vop_t ***opv_desc_vector_p;
390 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
391 };
392
393 /*
394 * A generic structure.
395 * This can be used by bypass routines to identify generic arguments.
396 */
397 struct vop_generic_args {
398 struct vnodeop_desc *a_desc;
399 /* other random data follows, presumably */
400 };
401
402
403 #ifdef DEBUG_VFS_LOCKS
404 /*
405 * Macros to aid in tracing VFS locking problems. Not totally
406 * reliable since if the process sleeps between changing the lock
407 * state and checking it with the assert, some other process could
408 * change the state. They are good enough for debugging a single
409 * filesystem using a single-threaded test. I find that 'cvs co src'
410 * is a pretty good test.
411 */
412
413 /*
414 * [dfr] Kludge until I get around to fixing all the vfs locking.
415 */
416 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
417 || (vp)->v_tag == VT_MFS \
418 || (vp)->v_tag == VT_NFS \
419 || (vp)->v_tag == VT_LFS \
420 || (vp)->v_tag == VT_ISOFS \
421 || (vp)->v_tag == VT_MSDOSFS \
422 || (vp)->v_tag == VT_DEVFS)
423
424 #define ASSERT_VOP_LOCKED(vp, str) \
425 if ((vp) && IS_LOCKING_VFS(vp) && !VOP_ISLOCKED(vp)) { \
426 panic("%s: %x is not locked but should be", str, vp); \
427 }
428
429 #define ASSERT_VOP_UNLOCKED(vp, str) \
430 if ((vp) && IS_LOCKING_VFS(vp) && VOP_ISLOCKED(vp)) { \
431 panic("%s: %x is locked but shouldn't be", str, vp); \
432 }
433
434 #else
435
436 #define ASSERT_VOP_LOCKED(vp, str)
437 #define ASSERT_VOP_UNLOCKED(vp, str)
438
439 #endif
440
441 /*
442 * VOCALL calls an op given an ops vector. We break it out because BSD's
443 * vclean changes the ops vector and then wants to call ops with the old
444 * vector.
445 */
446 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
447
448 /*
449 * This call works for vnodes in the kernel.
450 */
451 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
452 #define VDESC(OP) (& __CONCAT(OP,_desc))
453 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
454
455 /*
456 * Finally, include the default set of vnode operations.
457 */
458 #include "vnode_if.h"
459
460 /*
461 * Public vnode manipulation functions.
462 */
463 struct componentname;
464 struct file;
465 struct mount;
466 struct nameidata;
467 struct ostat;
468 struct proc;
469 struct stat;
470 struct nstat;
471 struct ucred;
472 struct uio;
473 struct vattr;
474 struct vnode;
475 struct vop_bwrite_args;
476
477 extern int (*lease_check_hook) __P((struct vop_lease_args *));
478
479 int bdevvp __P((dev_t dev, struct vnode **vpp));
480 /* cache_* may belong in namei.h. */
481 void cache_enter __P((struct vnode *dvp, struct vnode *vp,
482 struct componentname *cnp));
483 int cache_lookup __P((struct vnode *dvp, struct vnode **vpp,
484 struct componentname *cnp));
485 void cache_purge __P((struct vnode *vp));
486 void cache_purgevfs __P((struct mount *mp));
487 void cvtstat __P((struct stat *st, struct ostat *ost));
488 void cvtnstat __P((struct stat *sb, struct nstat *nsb));
489 int getnewvnode __P((enum vtagtype tag,
490 struct mount *mp, vop_t **vops, struct vnode **vpp));
491 int lease_check __P((struct vop_lease_args *ap));
492 void vattr_null __P((struct vattr *vap));
493 int vcount __P((struct vnode *vp));
494 void vdrop __P((struct vnode *));
495 int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp));
496 void vfs_add_vnodeops __P((void *));
497 void vfs_rm_vnodeops __P((void *));
498 int vflush __P((struct mount *mp, struct vnode *skipvp, int flags));
499 int vget __P((struct vnode *vp, int lockflag, struct proc *p));
500 void vgone __P((struct vnode *vp));
501 void vhold __P((struct vnode *));
502 int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred,
503
504 struct proc *p, int slpflag, int slptimeo));
505 int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p,
506 off_t length, int blksize));
507 void vprint __P((char *label, struct vnode *vp));
508 int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp,
509 struct proc *p));
510 int vn_close __P((struct vnode *vp,
511 int flags, struct ucred *cred, struct proc *p));
512 int vn_lock __P((struct vnode *vp, int flags, struct proc *p));
513 #ifdef DEBUG_LOCKS
514 int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p,
515 const char *filename, int line));
516 #define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__)
517 #endif
518 int vn_open __P((struct nameidata *ndp, int fmode, int cmode));
519 void vn_pollevent __P((struct vnode *vp, int events));
520 void vn_pollgone __P((struct vnode *vp));
521 int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events));
522 int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base,
523 int len, off_t offset, enum uio_seg segflg, int ioflg,
524 struct ucred *cred, int *aresid, struct proc *p));
525 int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p));
526 void vn_syncer_add_to_worklist __P((struct vnode *vp, int delay));
527 int vfs_cache_lookup __P((struct vop_lookup_args *ap));
528 int vfs_object_create __P((struct vnode *vp, struct proc *p,
529 struct ucred *cred));
530 int vn_writechk __P((struct vnode *vp));
531 int vop_stdbwrite __P((struct vop_bwrite_args *ap));
532 int vop_stdislocked __P((struct vop_islocked_args *));
533 int vop_stdlock __P((struct vop_lock_args *));
534 int vop_stdunlock __P((struct vop_unlock_args *));
535 int vop_noislocked __P((struct vop_islocked_args *));
536 int vop_nolock __P((struct vop_lock_args *));
537 int vop_nopoll __P((struct vop_poll_args *));
538 int vop_nounlock __P((struct vop_unlock_args *));
539 int vop_stdpathconf __P((struct vop_pathconf_args *));
540 int vop_stdpoll __P((struct vop_poll_args *));
541 int vop_revoke __P((struct vop_revoke_args *));
542 int vop_sharedlock __P((struct vop_lock_args *));
543 int vop_eopnotsupp __P((struct vop_generic_args *ap));
544 int vop_ebadf __P((struct vop_generic_args *ap));
545 int vop_einval __P((struct vop_generic_args *ap));
546 int vop_enotty __P((struct vop_generic_args *ap));
547 int vop_defaultop __P((struct vop_generic_args *ap));
548 int vop_null __P((struct vop_generic_args *ap));
549 int vop_panic __P((struct vop_generic_args *ap));
550
551 struct vnode *
552 checkalias __P((struct vnode *vp, dev_t nvp_rdev, struct mount *mp));
553 void vput __P((struct vnode *vp));
554 void vrele __P((struct vnode *vp));
555 void vref __P((struct vnode *vp));
556 void vbusy __P((struct vnode *vp));
557
558 extern vop_t **default_vnodeop_p;
559
560 extern TAILQ_HEAD(tobefreelist, vnode)
561 vnode_tobefree_list; /* vnode free list */
562
563 #endif /* KERNEL */
564
565 #endif /* !_SYS_VNODE_H_ */
Cache object: 0327a2bbe5e59646c18b0e7c7e4dfde0
|