1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)vnode.h 8.7 (Berkeley) 2/4/94 34 * $FreeBSD: src/sys/sys/vnode.h,v 1.111.2.19 2002/12/29 18:19:53 dillon Exp $ 35 * $DragonFly: src/sys/sys/vnode.h,v 1.62 2006/07/19 06:08:07 dillon Exp $ 36 */ 37 38 #ifndef _SYS_VNODE_H_ 39 #define _SYS_VNODE_H_ 40 41 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 42 43 #ifndef _SYS_QUEUE_H_ 44 #include <sys/queue.h> 45 #endif 46 #ifndef _SYS_LOCK_H_ 47 #include <sys/lock.h> 48 #endif 49 #ifndef _SYS_SELINFO_H_ 50 #include <sys/selinfo.h> 51 #endif 52 #ifndef _SYS_BIOTRACK_H_ 53 #include <sys/biotrack.h> 54 #endif 55 #ifndef _SYS_UIO_H_ 56 #include <sys/uio.h> 57 #endif 58 #ifndef _SYS_ACL_H_ 59 #include <sys/acl.h> 60 #endif 61 #ifndef _SYS_NAMECACHE_H_ 62 #include <sys/namecache.h> 63 #endif 64 #ifndef _SYS_THREAD_H_ 65 #include <sys/thread.h> 66 #endif 67 #ifndef _SYS_VFSOPS_H_ 68 #include <sys/vfsops.h> 69 #endif 70 #ifndef _SYS_VFSCACHE_H_ 71 #include <sys/vfscache.h> 72 #endif 73 #ifndef _SYS_TREE_H_ 74 #include <sys/tree.h> 75 #endif 76 #ifndef _SYS_SYSLINK_H_ 77 #include <sys/syslink.h> 78 #endif 79 #ifndef _MACHINE_LOCK_H_ 80 #include <machine/lock.h> 81 #endif 82 83 /* 84 * The vnode is the focus of all file activity in UNIX. There is a 85 * unique vnode allocated for each active file, each current directory, 86 * each mounted-on file, text file, and the root. 87 */ 88 89 /* 90 * Each underlying filesystem allocates its own private area and hangs 91 * it from v_data. If non-null, this area is freed in getnewvnode(). 92 */ 93 TAILQ_HEAD(buflists, buf); 94 95 /* 96 * Range locks protect offset ranges in files and directories at a high 97 * level, allowing the actual I/O to be broken down into smaller pieces. 98 * Range locks will eventually be integrated into the clustered cache 99 * coherency infrastructure. 100 * 101 * We use a simple data structure for now, but eventually this should 102 * probably be a btree or red-black tree. 103 */ 104 struct vrangelock; 105 106 TAILQ_HEAD(vrangelock_list, vrangelock); 107 108 struct vrangehead { 109 struct vrangelock_list vh_list; 110 }; 111 112 struct vrangelock { 113 TAILQ_ENTRY(vrangelock) vr_node; 114 int vr_flags; 115 off_t vr_offset; 116 off_t vr_length; 117 }; 118 119 #define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */ 120 #define RNGL_CHECK 0x0002 /* check for work on unlock */ 121 #define RNGL_SHARED 0x0004 /* shared lock, else exclusive */ 122 #define RNGL_ONLIST 0x0008 /* sanity check */ 123 124 static __inline 125 void 126 vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length) 127 { 128 vr->vr_flags = flags; 129 vr->vr_offset = offset; 130 vr->vr_length = length; 131 } 132 133 #ifdef _KERNEL 134 135 void vrange_lock(struct vnode *vp, struct vrangelock *vr); 136 void vrange_unlock(struct vnode *vp, struct vrangelock *vr); 137 138 static __inline 139 void 140 vrange_lock_shared(struct vnode *vp, struct vrangelock *vr, 141 off_t offset, off_t length) 142 { 143 vrange_init(vr, RNGL_SHARED, offset, length); 144 vrange_lock(vp, vr); 145 } 146 147 static __inline 148 void 149 vrange_lock_excl(struct vnode *vp, struct vrangelock *vr, 150 off_t offset, off_t length) 151 { 152 vrange_init(vr, 0, offset, length); 153 vrange_lock(vp, vr); 154 } 155 156 #endif 157 158 /* 159 * The vnode infrastructure is being reorgranized. Most reference-related 160 * fields are locked by the BGL, and most file I/O related operations and 161 * vnode teardown functions are locked by the vnode lock. 162 * 163 * File read operations require a shared lock, file write operations require 164 * an exclusive lock. Most directory operations (read or write) currently 165 * require an exclusive lock due to the side effects stored in the directory 166 * inode (which we intend to fix). 167 * 168 * File reads and writes are further protected by a range lock. The intention 169 * is to be able to break I/O operations down into more easily managed pieces 170 * so vm_page arrays can be passed through rather then UIOs. This work will 171 * occur in multiple stages. The range locks will also eventually be used to 172 * deal with clustered cache coherency issues and, more immediately, to 173 * protect operations associated with the kernel-managed journaling module. 174 * 175 * NOTE: The vnode operations vector, v_ops, is a double-indirect that 176 * typically points to &v_mount->mnt_vn_use_ops. We use a double 177 * pointer because mnt_vn_use_ops may change dynamically when e.g. 178 * journaling is turned on or off. 179 * 180 * NOTE: v_filesize is currently only applicable when a VM object is 181 * associated with the vnode. Otherwise it will be set to NOOFFSET. 182 */ 183 RB_HEAD(buf_rb_tree, buf); 184 RB_HEAD(buf_rb_hash, buf); 185 186 struct vnode { 187 int v_flag; /* vnode flags (see below) */ 188 int v_usecount; /* reference count of users */ 189 int v_writecount; 190 int v_holdcnt; /* page & buffer references */ 191 int v_opencount; /* number of explicit opens */ 192 struct bio_track v_track_read; /* track I/O's in progress */ 193 struct bio_track v_track_write; /* track I/O's in progress */ 194 struct mount *v_mount; /* ptr to vfs we are in */ 195 struct vop_ops **v_ops; /* vnode operations vector */ 196 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 197 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */ 198 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */ 199 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */ 200 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */ 201 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 202 enum vtype v_type; /* vnode type */ 203 union { 204 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 205 struct socket *vu_socket; /* unix ipc (VSOCK) */ 206 struct { 207 udev_t vu_udev; /* device number for attach */ 208 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 209 SLIST_ENTRY(vnode) vu_specnext; 210 } vu_spec; 211 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 212 } v_un; 213 off_t v_filesize; /* file EOF or NOOFFSET */ 214 off_t v_lazyw; /* lazy write iterator */ 215 off_t v_lastw; /* last write (write cluster) */ 216 off_t v_cstart; /* start block of cluster */ 217 off_t v_lasta; /* last allocation */ 218 int v_clen; /* length of current cluster */ 219 struct vm_object *v_object; /* Place to store VM object */ 220 struct lock v_lock; /* file/dir ops lock */ 221 enum vtagtype v_tag; /* type of underlying data */ 222 void *v_data; /* private data for fs */ 223 struct namecache_list v_namecache; /* associated nc entries */ 224 struct { 225 struct lwkt_token vpi_token; /* lock to protect below */ 226 struct selinfo vpi_selinfo; /* identity of poller(s) */ 227 short vpi_events; /* what they are looking for */ 228 short vpi_revents; /* what has happened */ 229 } v_pollinfo; 230 struct vmresident *v_resident; /* optional vmresident */ 231 struct vrangehead v_range; /* range lock */ 232 #ifdef DEBUG_LOCKS 233 const char *filename; /* Source file doing locking */ 234 int line; /* Line number doing locking */ 235 #endif 236 void *v_xaddr; 237 }; 238 #define v_mountedhere v_un.vu_mountedhere 239 #define v_socket v_un.vu_socket 240 #define v_udev v_un.vu_spec.vu_udev 241 #define v_rdev v_un.vu_spec.vu_specinfo 242 #define v_specnext v_un.vu_spec.vu_specnext 243 #define v_fifoinfo v_un.vu_fifoinfo 244 #define v_spinlock v_lock.lk_spinlock 245 246 #define VN_POLLEVENT(vp, events) \ 247 do { \ 248 if ((vp)->v_pollinfo.vpi_events & (events)) \ 249 vn_pollevent((vp), (events)); \ 250 } while (0) 251 252 /* 253 * Vnode flags. 254 */ 255 #define VROOT 0x00001 /* root of its file system */ 256 #define VTEXT 0x00002 /* vnode is a pure text prototype */ 257 #define VSYSTEM 0x00004 /* vnode being used by kernel */ 258 #define VISTTY 0x00008 /* vnode represents a tty */ 259 #define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */ 260 #define VCKPT 0x00020 /* checkpoint-restored vnode */ 261 #define VFSMID 0x00040 /* request FSMID update */ 262 #define VMAYHAVELOCKS 0x00080 /* there may be posix or flock locks on vp */ 263 /* open for business 0x00100 */ 264 /* open for business 0x00200 */ 265 /* open for business 0x00400 */ 266 /* open for business 0x00800 */ 267 /* open for business 0x01000 */ 268 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 269 #define VINACTIVE 0x04000 /* The vnode is inactive */ 270 #define VAGE 0x08000 /* Insert vnode at head of free list */ 271 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 272 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 273 #define VRECLAIMED 0x40000 /* This vnode has been destroyed */ 274 #define VFREE 0x80000 /* This vnode is on the freelist */ 275 /* open for business 0x100000 */ 276 #define VONWORKLST 0x200000 /* On syncer work-list */ 277 #define VMOUNT 0x400000 /* Mount in progress */ 278 #define VOBJDIRTY 0x800000 /* object might be dirty */ 279 280 /* 281 * vmntvnodescan() flags 282 */ 283 #define VMSC_GETVP 1 284 #define VMSC_GETVX 2 285 #define VMSC_REFVP 3 286 #define VMSC_NOWAIT 0x10 287 288 /* 289 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 290 * help with write clustering) 291 */ 292 #define IO_UNIT 0x0001 /* do I/O as atomic unit */ 293 #define IO_APPEND 0x0002 /* append write to end */ 294 #define IO_SYNC 0x0004 /* do I/O synchronously */ 295 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 296 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 297 #define IO_VMIO 0x0020 /* data already in VMIO space */ 298 #define IO_INVAL 0x0040 /* invalidate after I/O */ 299 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 300 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 301 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */ 302 #define IO_CORE 0x0400 /* I/O is part of core dump */ 303 304 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 305 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 306 307 /* 308 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID, 309 * and SVTX flag bits. 310 * 311 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls. 312 */ 313 #define VDELETE 040000 /* delete if the file/dir exists */ 314 #define VCREATE 020000 /* create if the file/dir does not exist */ 315 #define VEXCL 010000 /* error if the file/dir already exists */ 316 317 #define VSUID 04000 /* set user id on execution */ 318 #define VSGID 02000 /* set group id on execution */ 319 #define VSVTX 01000 /* save swapped text even after use */ 320 #define VREAD 00400 /* read, write, execute permissions */ 321 #define VWRITE 00200 322 #define VEXEC 00100 323 324 /* 325 * Token indicating no attribute value yet assigned. 326 */ 327 #define VNOVAL (-1) 328 329 /* 330 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 331 */ 332 #define VLKTIMEOUT (hz / 20 + 1) 333 334 #ifdef _KERNEL 335 336 /* 337 * Convert between vnode types and inode formats (since POSIX.1 338 * defines mode word of stat structure in terms of inode formats). 339 */ 340 extern enum vtype iftovt_tab[]; 341 extern int vttoif_tab[]; 342 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 343 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 344 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 345 346 /* 347 * Flags to various vnode functions. 348 */ 349 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 350 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 351 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 352 #define DOCLOSE 0x0008 /* vclean: close active files */ 353 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 354 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 355 356 #ifdef DIAGNOSTIC 357 #define VATTR_NULL(vap) vattr_null(vap) 358 #else 359 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 360 #endif /* DIAGNOSTIC */ 361 362 #define NULLVP ((struct vnode *)NULL) 363 364 #define VNODEOP_SET(f) \ 365 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \ 366 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f); 367 368 /* 369 * Global vnode data. 370 */ 371 struct objcache; 372 373 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 374 extern struct namecache *rootncp; /* root (i.e. "/") namecache */ 375 extern int desiredvnodes; /* number of vnodes desired */ 376 extern time_t syncdelay; /* max time to delay syncing data */ 377 extern time_t filedelay; /* time to delay syncing files */ 378 extern time_t dirdelay; /* time to delay syncing directories */ 379 extern time_t metadelay; /* time to delay syncing metadata */ 380 extern struct objcache *namei_oc; 381 extern int prtactive; /* nonzero to call vprint() */ 382 extern struct vattr va_null; /* predefined null vattr structure */ 383 extern int vfs_ioopt; 384 extern int numvnodes; 385 extern int freevnodes; 386 extern int vfs_fastdev; /* fast specfs device access */ 387 388 /* 389 * Interlock for scanning list of vnodes attached to a mountpoint 390 */ 391 extern struct lwkt_token mntvnode_token; 392 393 /* 394 * This macro is very helpful in defining those offsets in the vdesc struct. 395 * 396 * This is stolen from X11R4. I ignored all the fancy stuff for 397 * Crays, so if you decide to port this to such a serious machine, 398 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 399 */ 400 #define VOPARG_OFFSET(p_type,field) \ 401 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 402 #define VOPARG_OFFSETOF(s_type,field) \ 403 VOPARG_OFFSET(s_type*,field) 404 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 405 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 406 407 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *); 408 409 #ifdef DEBUG_VFS_LOCKS 410 /* 411 * Macros to aid in tracing VFS locking problems. Not totally 412 * reliable since if the process sleeps between changing the lock 413 * state and checking it with the assert, some other process could 414 * change the state. They are good enough for debugging a single 415 * filesystem using a single-threaded test. I find that 'cvs co src' 416 * is a pretty good test. 417 */ 418 419 #define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str) 420 #define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str); 421 422 void assert_vop_locked(struct vnode *vp, const char *str); 423 void assert_vop_unlocked(struct vnode *vp, const char *str); 424 425 #else 426 427 #define ASSERT_VOP_LOCKED(vp, str) 428 #define ASSERT_VOP_UNLOCKED(vp, str) 429 430 #endif /* DEBUG_VFS_LOCKS */ 431 432 /* 433 * VOCALL calls an op given an ops vector. We break it out because BSD's 434 * vclean changes the ops vector and then wants to call ops with the old 435 * vector. 436 */ 437 438 typedef int (*vocall_func_t)(struct vop_generic_args *); 439 440 /* 441 * This call executes the vops vector for the offset stored in the ap's 442 * descriptor of the passed vops rather then the one related to the 443 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of 444 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops 445 * vector function). 446 */ 447 #define VOCALL(vops, ap) \ 448 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap) 449 450 #define VDESC(OP) (& __CONCAT(OP,_desc)) 451 452 /* 453 * Public vnode manipulation functions. 454 */ 455 struct file; 456 struct mount; 457 struct nlookupdata; 458 struct proc; 459 struct thread; 460 struct stat; 461 struct ucred; 462 struct uio; 463 struct vattr; 464 struct vnode; 465 466 void addaliasu (struct vnode *vp, udev_t nvp_udev); 467 int v_associate_rdev(struct vnode *vp, dev_t dev); 468 void v_release_rdev(struct vnode *vp); 469 int bdevvp (dev_t dev, struct vnode **vpp); 470 struct vnode *allocvnode(int lktimeout, int lkflags); 471 int getnewvnode (enum vtagtype tag, struct mount *mp, 472 struct vnode **vpp, int timo, int lkflags); 473 int getspecialvnode (enum vtagtype tag, struct mount *mp, 474 struct vop_ops **ops, struct vnode **vpp, int timo, 475 int lkflags); 476 int spec_vnoperate (struct vop_generic_args *); 477 int speedup_syncer (void); 478 void vattr_null (struct vattr *vap); 479 int vcount (struct vnode *vp); 480 int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp); 481 void vfs_nadd_vnodeops_sysinit (void *); 482 void vfs_nrm_vnodeops_sysinit (void *); 483 void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 484 void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 485 int vflush (struct mount *mp, int rootrefs, int flags); 486 int vmntvnodescan(struct mount *mp, int flags, 487 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data), 488 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data), 489 void *data); 490 void insmntque(struct vnode *vp, struct mount *mp); 491 492 void vclean (struct vnode *vp, int flags); 493 void vgone (struct vnode *vp); 494 void vupdatefsmid (struct vnode *vp); 495 int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo); 496 int vtruncbuf (struct vnode *vp, off_t length, int blksize); 497 int vfsync(struct vnode *vp, int waitfor, int passes, 498 int (*checkdef)(struct buf *), 499 int (*waitoutput)(struct vnode *, struct thread *)); 500 int vinitvmio(struct vnode *vp, off_t filesize); 501 void vprint (char *label, struct vnode *vp); 502 int vrecycle (struct vnode *vp); 503 void vn_strategy(struct vnode *vp, struct bio *bio); 504 int vn_close (struct vnode *vp, int flags); 505 int vn_isdisk (struct vnode *vp, int *errp); 506 int vn_lock (struct vnode *vp, int flags); 507 #ifdef DEBUG_LOCKS 508 int debug_vn_lock (struct vnode *vp, int flags, 509 const char *filename, int line); 510 #define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__) 511 #endif 512 513 int vn_get_namelen(struct vnode *, int *); 514 void vn_setspecops (struct file *fp); 515 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf); 516 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode); 517 void vn_pollevent (struct vnode *vp, int events); 518 void vn_pollgone (struct vnode *vp); 519 int vn_pollrecord (struct vnode *vp, int events); 520 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base, 521 int len, off_t offset, enum uio_seg segflg, int ioflg, 522 struct ucred *cred, int *aresid); 523 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base, 524 int len, off_t offset, enum uio_seg segflg, int ioflg, 525 struct ucred *cred, int *aresid); 526 int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred); 527 dev_t vn_todev (struct vnode *vp); 528 void vfs_timestamp (struct timespec *); 529 int vn_writechk (struct vnode *vp); 530 int vop_stdopen (struct vop_open_args *ap); 531 int vop_stdclose (struct vop_close_args *ap); 532 int vop_stdislocked (struct vop_islocked_args *ap); 533 int vop_stdlock (struct vop_lock_args *ap); 534 int vop_stdrlock (struct vop_lock_args *ap); 535 int vop_stdunlock (struct vop_unlock_args *ap); 536 int vop_nopoll (struct vop_poll_args *ap); 537 int vop_stdpathconf (struct vop_pathconf_args *ap); 538 int vop_stdpoll (struct vop_poll_args *ap); 539 int vop_stdrevoke (struct vop_revoke_args *ap); 540 int vop_eopnotsupp (struct vop_generic_args *ap); 541 int vop_ebadf (struct vop_generic_args *ap); 542 int vop_einval (struct vop_generic_args *ap); 543 int vop_enotty (struct vop_generic_args *ap); 544 int vop_defaultop (struct vop_generic_args *ap); 545 int vop_null (struct vop_generic_args *ap); 546 int vop_panic (struct vop_generic_args *ap); 547 int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t, 548 const char *); 549 550 int vop_compat_nresolve(struct vop_nresolve_args *ap); 551 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap); 552 int vop_compat_ncreate(struct vop_ncreate_args *ap); 553 int vop_compat_nmkdir(struct vop_nmkdir_args *ap); 554 int vop_compat_nmknod(struct vop_nmknod_args *ap); 555 int vop_compat_nlink(struct vop_nlink_args *ap); 556 int vop_compat_nsymlink(struct vop_nsymlink_args *ap); 557 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap); 558 int vop_compat_nremove(struct vop_nremove_args *ap); 559 int vop_compat_nrmdir(struct vop_nrmdir_args *ap); 560 int vop_compat_nrename(struct vop_nrename_args *ap); 561 562 int vx_lock (struct vnode *vp); 563 void vx_unlock (struct vnode *vp); 564 int vx_get (struct vnode *vp); 565 int vx_get_nonblock (struct vnode *vp); 566 void vx_put (struct vnode *vp); 567 int vget (struct vnode *vp, int lockflag); 568 void vput (struct vnode *vp); 569 void vhold (struct vnode *); 570 void vdrop (struct vnode *); 571 void vref (struct vnode *vp); 572 void vrele (struct vnode *vp); 573 void vsetflags (struct vnode *vp, int flags); 574 void vclrflags (struct vnode *vp, int flags); 575 576 void vfs_subr_init(void); 577 void vfs_mount_init(void); 578 void vfs_lock_init(void); 579 void vfs_sync_init(void); 580 581 void vn_syncer_add_to_worklist(struct vnode *, int); 582 void vnlru_proc_wait(void); 583 584 extern struct vop_ops default_vnode_vops; 585 extern struct vop_ops spec_vnode_vops; 586 extern struct vop_ops dead_vnode_vops; 587 588 extern struct vop_ops *default_vnode_vops_p; 589 extern struct vop_ops *spec_vnode_vops_p; 590 extern struct vop_ops *dead_vnode_vops_p; 591 592 #endif /* _KERNEL */ 593 594 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 595 #endif /* !_SYS_VNODE_H_ */ 596