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 1.72 2006/10/27 04:56:33 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 _SYS_CCMS_H_ 80 #include <sys/ccms.h> 81 #endif 82 #ifndef _MACHINE_LOCK_H_ 83 #include <machine/lock.h> 84 #endif 85 86 /* 87 * The vnode is the focus of all file activity in UNIX. There is a 88 * unique vnode allocated for each active file, each current directory, 89 * each mounted-on file, text file, and the root. 90 */ 91 92 /* 93 * Each underlying filesystem allocates its own private area and hangs 94 * it from v_data. If non-null, this area is freed in getnewvnode(). 95 */ 96 TAILQ_HEAD(buflists, buf); 97 98 /* 99 * Range locks protect offset ranges in files and directories at a high 100 * level, allowing the actual I/O to be broken down into smaller pieces. 101 * Range locks will eventually be integrated into the clustered cache 102 * coherency infrastructure. 103 * 104 * We use a simple data structure for now, but eventually this should 105 * probably be a btree or red-black tree. 106 */ 107 struct vrangelock; 108 109 TAILQ_HEAD(vrangelock_list, vrangelock); 110 111 struct vrangehead { 112 struct vrangelock_list vh_list; 113 }; 114 115 struct vrangelock { 116 TAILQ_ENTRY(vrangelock) vr_node; 117 int vr_flags; 118 off_t vr_offset; 119 off_t vr_length; 120 }; 121 122 #define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */ 123 #define RNGL_CHECK 0x0002 /* check for work on unlock */ 124 #define RNGL_SHARED 0x0004 /* shared lock, else exclusive */ 125 #define RNGL_ONLIST 0x0008 /* sanity check */ 126 127 static __inline 128 void 129 vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length) 130 { 131 vr->vr_flags = flags; 132 vr->vr_offset = offset; 133 vr->vr_length = length; 134 } 135 136 #ifdef _KERNEL 137 138 void vrange_lock(struct vnode *vp, struct vrangelock *vr); 139 void vrange_unlock(struct vnode *vp, struct vrangelock *vr); 140 141 static __inline 142 void 143 vrange_lock_shared(struct vnode *vp, struct vrangelock *vr, 144 off_t offset, off_t length) 145 { 146 vrange_init(vr, RNGL_SHARED, offset, length); 147 vrange_lock(vp, vr); 148 } 149 150 static __inline 151 void 152 vrange_lock_excl(struct vnode *vp, struct vrangelock *vr, 153 off_t offset, off_t length) 154 { 155 vrange_init(vr, 0, offset, length); 156 vrange_lock(vp, vr); 157 } 158 159 #endif 160 161 /* 162 * The vnode infrastructure is being reorgranized. Most reference-related 163 * fields are locked by the BGL, and most file I/O related operations and 164 * vnode teardown functions are locked by the vnode lock. 165 * 166 * File read operations require a shared lock, file write operations require 167 * an exclusive lock. Most directory operations (read or write) currently 168 * require an exclusive lock due to the side effects stored in the directory 169 * inode (which we intend to fix). 170 * 171 * File reads and writes are further protected by a range lock. The intention 172 * is to be able to break I/O operations down into more easily managed pieces 173 * so vm_page arrays can be passed through rather then UIOs. This work will 174 * occur in multiple stages. The range locks will also eventually be used to 175 * deal with clustered cache coherency issues and, more immediately, to 176 * protect operations associated with the kernel-managed journaling module. 177 * 178 * NOTE: The vnode operations vector, v_ops, is a double-indirect that 179 * typically points to &v_mount->mnt_vn_use_ops. We use a double 180 * pointer because mnt_vn_use_ops may change dynamically when e.g. 181 * journaling is turned on or off. 182 * 183 * NOTE: v_filesize is currently only applicable when a VM object is 184 * associated with the vnode. Otherwise it will be set to NOOFFSET. 185 */ 186 RB_HEAD(buf_rb_tree, buf); 187 RB_HEAD(buf_rb_hash, buf); 188 189 struct vnode { 190 int v_flag; /* vnode flags (see below) */ 191 int v_usecount; /* reference count of users */ 192 int v_writecount; 193 int v_holdcnt; /* page & buffer references */ 194 int v_opencount; /* number of explicit opens */ 195 struct bio_track v_track_read; /* track I/O's in progress */ 196 struct bio_track v_track_write; /* track I/O's in progress */ 197 struct mount *v_mount; /* ptr to vfs we are in */ 198 struct vop_ops **v_ops; /* vnode operations vector */ 199 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 200 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */ 201 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */ 202 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */ 203 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */ 204 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 205 enum vtype v_type; /* vnode type */ 206 union { 207 struct socket *vu_socket; /* unix ipc (VSOCK) */ 208 struct { 209 udev_t vu_udev; /* device number for attach */ 210 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */ 211 SLIST_ENTRY(vnode) vu_cdevnext; 212 } vu_cdev; 213 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 214 } v_un; 215 off_t v_filesize; /* file EOF or NOOFFSET */ 216 off_t v_lazyw; /* lazy write iterator */ 217 off_t v_lastw; /* last write (write cluster) */ 218 off_t v_cstart; /* start block of cluster */ 219 off_t v_lasta; /* last allocation */ 220 int v_clen; /* length of current cluster */ 221 struct vm_object *v_object; /* Place to store VM object */ 222 struct lock v_lock; /* file/dir ops lock */ 223 enum vtagtype v_tag; /* type of underlying data */ 224 void *v_data; /* private data for fs */ 225 struct namecache_list v_namecache; /* associated nc entries */ 226 struct { 227 struct lwkt_token vpi_token; /* lock to protect below */ 228 struct selinfo vpi_selinfo; /* identity of poller(s) */ 229 short vpi_events; /* what they are looking for */ 230 short vpi_revents; /* what has happened */ 231 } v_pollinfo; 232 struct vmresident *v_resident; /* optional vmresident */ 233 struct vrangehead v_range; /* range lock */ 234 struct ccms_dataspace v_ccms; /* cache coherency */ 235 #ifdef DEBUG_LOCKS 236 const char *filename; /* Source file doing locking */ 237 int line; /* Line number doing locking */ 238 #endif 239 void *v_xaddr; 240 }; 241 #define v_socket v_un.vu_socket 242 #define v_udev v_un.vu_cdev.vu_udev 243 #define v_rdev v_un.vu_cdev.vu_cdevinfo 244 #define v_cdevnext v_un.vu_cdev.vu_cdevnext 245 #define v_fifoinfo v_un.vu_fifoinfo 246 #define v_spinlock v_lock.lk_spinlock 247 248 #define VN_POLLEVENT(vp, events) \ 249 do { \ 250 if ((vp)->v_pollinfo.vpi_events & (events)) \ 251 vn_pollevent((vp), (events)); \ 252 } while (0) 253 254 /* 255 * Vnode flags. 256 */ 257 #define VROOT 0x00001 /* root of its file system */ 258 #define VTEXT 0x00002 /* vnode is a pure text prototype */ 259 #define VSYSTEM 0x00004 /* vnode being used by kernel */ 260 #define VISTTY 0x00008 /* vnode represents a tty */ 261 #define VCTTYISOPEN 0x00010 /* controlling terminal tty is open */ 262 #define VCKPT 0x00020 /* checkpoint-restored vnode */ 263 #define VFSMID 0x00040 /* request FSMID update */ 264 #define VMAYHAVELOCKS 0x00080 /* there may be posix or flock locks on vp */ 265 /* open for business 0x00100 */ 266 /* open for business 0x00200 */ 267 /* open for business 0x00400 */ 268 /* open for business 0x00800 */ 269 /* open for business 0x01000 */ 270 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 271 #define VINACTIVE 0x04000 /* The vnode is inactive */ 272 #define VAGE 0x08000 /* Insert vnode at head of free list */ 273 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 274 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 275 #define VRECLAIMED 0x40000 /* This vnode has been destroyed */ 276 #define VFREE 0x80000 /* This vnode is on the freelist */ 277 /* open for business 0x100000 */ 278 #define VONWORKLST 0x200000 /* On syncer work-list */ 279 #define VMOUNT 0x400000 /* Mount in progress */ 280 #define VOBJDIRTY 0x800000 /* object might be dirty */ 281 282 /* 283 * vmntvnodescan() flags 284 */ 285 #define VMSC_GETVP 1 286 #define VMSC_GETVX 2 287 #define VMSC_NOWAIT 0x10 288 289 /* 290 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 291 * help with write clustering) 292 */ 293 #define IO_UNIT 0x0001 /* do I/O as atomic unit */ 294 #define IO_APPEND 0x0002 /* append write to end */ 295 #define IO_SYNC 0x0004 /* do I/O synchronously */ 296 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 297 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 298 #define IO_VMIO 0x0020 /* data already in VMIO space */ 299 #define IO_INVAL 0x0040 /* invalidate after I/O */ 300 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 301 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 302 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */ 303 #define IO_CORE 0x0400 /* I/O is part of core dump */ 304 305 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 306 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 307 308 /* 309 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID, 310 * and SVTX flag bits. 311 * 312 * VCREATE, VDELETE, and VEXCL may only be used in naccess() calls. 313 */ 314 #define VDELETE 040000 /* delete if the file/dir exists */ 315 #define VCREATE 020000 /* create if the file/dir does not exist */ 316 #define VEXCL 010000 /* error if the file/dir already exists */ 317 318 #define VSUID 04000 /* set user id on execution */ 319 #define VSGID 02000 /* set group id on execution */ 320 #define VSVTX 01000 /* save swapped text even after use */ 321 #define VREAD 00400 /* read, write, execute permissions */ 322 #define VWRITE 00200 323 #define VEXEC 00100 324 325 /* 326 * Token indicating no attribute value yet assigned. 327 */ 328 #define VNOVAL (-1) 329 330 /* 331 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 332 */ 333 #define VLKTIMEOUT (hz / 20 + 1) 334 335 #ifdef _KERNEL 336 337 /* 338 * Convert between vnode types and inode formats (since POSIX.1 339 * defines mode word of stat structure in terms of inode formats). 340 */ 341 extern enum vtype iftovt_tab[]; 342 extern int vttoif_tab[]; 343 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 344 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 345 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 346 347 /* 348 * Flags to various vnode functions. 349 */ 350 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 351 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 352 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 353 #define DOCLOSE 0x0008 /* vclean: close active files */ 354 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 355 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 356 357 #ifdef DIAGNOSTIC 358 #define VATTR_NULL(vap) vattr_null(vap) 359 #else 360 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 361 #endif /* DIAGNOSTIC */ 362 363 #define NULLVP ((struct vnode *)NULL) 364 365 #define VNODEOP_SET(f) \ 366 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \ 367 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f); 368 369 /* 370 * Global vnode data. 371 */ 372 struct objcache; 373 374 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 375 extern struct nchandle rootnch; /* root (i.e. "/") namecache */ 376 extern int desiredvnodes; /* number of vnodes desired */ 377 extern time_t syncdelay; /* max time to delay syncing data */ 378 extern time_t filedelay; /* time to delay syncing files */ 379 extern time_t dirdelay; /* time to delay syncing directories */ 380 extern time_t metadelay; /* time to delay syncing metadata */ 381 extern struct objcache *namei_oc; 382 extern int prtactive; /* nonzero to call vprint() */ 383 extern struct vattr va_null; /* predefined null vattr structure */ 384 extern int vfs_ioopt; 385 extern int numvnodes; 386 extern int freevnodes; 387 extern int vfs_fastdev; /* fast specfs device access */ 388 389 /* 390 * Interlock for scanning list of vnodes attached to a mountpoint 391 */ 392 extern struct lwkt_token mntvnode_token; 393 394 /* 395 * This macro is very helpful in defining those offsets in the vdesc struct. 396 * 397 * This is stolen from X11R4. I ignored all the fancy stuff for 398 * Crays, so if you decide to port this to such a serious machine, 399 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 400 */ 401 #define VOPARG_OFFSET(p_type,field) \ 402 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 403 #define VOPARG_OFFSETOF(s_type,field) \ 404 VOPARG_OFFSET(s_type*,field) 405 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 406 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 407 408 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *); 409 410 /* 411 * VOCALL calls an op given an ops vector. We break it out because BSD's 412 * vclean changes the ops vector and then wants to call ops with the old 413 * vector. 414 */ 415 416 typedef int (*vocall_func_t)(struct vop_generic_args *); 417 418 /* 419 * This call executes the vops vector for the offset stored in the ap's 420 * descriptor of the passed vops rather then the one related to the 421 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of 422 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops 423 * vector function). 424 */ 425 #define VOCALL(vops, ap) \ 426 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap) 427 428 #define VDESC(OP) (& __CONCAT(OP,_desc)) 429 430 /* 431 * Public vnode manipulation functions. 432 */ 433 struct file; 434 struct mount; 435 struct nlookupdata; 436 struct proc; 437 struct thread; 438 struct stat; 439 struct ucred; 440 struct uio; 441 struct vattr; 442 struct vnode; 443 444 void addaliasu (struct vnode *vp, udev_t nvp_udev); 445 int v_associate_rdev(struct vnode *vp, cdev_t dev); 446 void v_release_rdev(struct vnode *vp); 447 int bdevvp (cdev_t dev, struct vnode **vpp); 448 struct vnode *allocvnode(int lktimeout, int lkflags); 449 int getnewvnode (enum vtagtype tag, struct mount *mp, 450 struct vnode **vpp, int timo, int lkflags); 451 int getspecialvnode (enum vtagtype tag, struct mount *mp, 452 struct vop_ops **ops, struct vnode **vpp, int timo, 453 int lkflags); 454 int spec_vnoperate (struct vop_generic_args *); 455 int speedup_syncer (void); 456 void vattr_null (struct vattr *vap); 457 int vcount (struct vnode *vp); 458 int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp); 459 void vfs_nadd_vnodeops_sysinit (void *); 460 void vfs_nrm_vnodeops_sysinit (void *); 461 void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 462 void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 463 int vflush (struct mount *mp, int rootrefs, int flags); 464 int vmntvnodescan(struct mount *mp, int flags, 465 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data), 466 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data), 467 void *data); 468 void insmntque(struct vnode *vp, struct mount *mp); 469 470 void vclean_interlocked (struct vnode *vp, int flags); 471 void vgone (struct vnode *vp); 472 void vgone_interlocked (struct vnode *vp); 473 void vupdatefsmid (struct vnode *vp); 474 int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo); 475 int vtruncbuf (struct vnode *vp, off_t length, int blksize); 476 int vfsync(struct vnode *vp, int waitfor, int passes, 477 int (*checkdef)(struct buf *), 478 int (*waitoutput)(struct vnode *, struct thread *)); 479 int vinitvmio(struct vnode *vp, off_t filesize); 480 void vprint (char *label, struct vnode *vp); 481 int vrecycle (struct vnode *vp); 482 void vn_strategy(struct vnode *vp, struct bio *bio); 483 int vn_close (struct vnode *vp, int flags); 484 int vn_isdisk (struct vnode *vp, int *errp); 485 int vn_lock (struct vnode *vp, int flags); 486 int vn_islocked (struct vnode *vp); 487 void vn_unlock (struct vnode *vp); 488 #ifdef DEBUG_LOCKS 489 int debug_vn_lock (struct vnode *vp, int flags, 490 const char *filename, int line); 491 #define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__) 492 #endif 493 494 int vn_get_namelen(struct vnode *, int *); 495 void vn_setspecops (struct file *fp); 496 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf); 497 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode); 498 void vn_pollevent (struct vnode *vp, int events); 499 void vn_pollgone (struct vnode *vp); 500 int vn_pollrecord (struct vnode *vp, int events); 501 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base, 502 int len, off_t offset, enum uio_seg segflg, int ioflg, 503 struct ucred *cred, int *aresid); 504 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base, 505 int len, off_t offset, enum uio_seg segflg, int ioflg, 506 struct ucred *cred, int *aresid); 507 int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred); 508 cdev_t vn_todev (struct vnode *vp); 509 void vfs_timestamp (struct timespec *); 510 int vn_writechk (struct vnode *vp, struct nchandle *nch); 511 int ncp_writechk(struct nchandle *nch); 512 int vop_stdopen (struct vop_open_args *ap); 513 int vop_stdclose (struct vop_close_args *ap); 514 int vop_nopoll (struct vop_poll_args *ap); 515 int vop_stdpathconf (struct vop_pathconf_args *ap); 516 int vop_stdpoll (struct vop_poll_args *ap); 517 int vop_stdrevoke (struct vop_revoke_args *ap); 518 int vop_eopnotsupp (struct vop_generic_args *ap); 519 int vop_ebadf (struct vop_generic_args *ap); 520 int vop_einval (struct vop_generic_args *ap); 521 int vop_enotty (struct vop_generic_args *ap); 522 int vop_defaultop (struct vop_generic_args *ap); 523 int vop_null (struct vop_generic_args *ap); 524 int vop_panic (struct vop_generic_args *ap); 525 int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t, 526 const char *); 527 528 int vop_compat_nresolve(struct vop_nresolve_args *ap); 529 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap); 530 int vop_compat_ncreate(struct vop_ncreate_args *ap); 531 int vop_compat_nmkdir(struct vop_nmkdir_args *ap); 532 int vop_compat_nmknod(struct vop_nmknod_args *ap); 533 int vop_compat_nlink(struct vop_nlink_args *ap); 534 int vop_compat_nsymlink(struct vop_nsymlink_args *ap); 535 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap); 536 int vop_compat_nremove(struct vop_nremove_args *ap); 537 int vop_compat_nrmdir(struct vop_nrmdir_args *ap); 538 int vop_compat_nrename(struct vop_nrename_args *ap); 539 540 void vx_lock (struct vnode *vp); 541 void vx_unlock (struct vnode *vp); 542 void vx_get (struct vnode *vp); 543 int vx_get_nonblock (struct vnode *vp); 544 void vx_put (struct vnode *vp); 545 int vget (struct vnode *vp, int lockflag); 546 void vput (struct vnode *vp); 547 void vhold (struct vnode *); 548 void vdrop (struct vnode *); 549 void vref (struct vnode *vp); 550 void vref_initial (struct vnode *vp, int reactivate); 551 void vrele (struct vnode *vp); 552 void vsetflags (struct vnode *vp, int flags); 553 void vclrflags (struct vnode *vp, int flags); 554 555 void vfs_subr_init(void); 556 void vfs_mount_init(void); 557 void vfs_lock_init(void); 558 void vfs_sync_init(void); 559 560 void vn_syncer_add_to_worklist(struct vnode *, int); 561 void vnlru_proc_wait(void); 562 563 extern struct vop_ops default_vnode_vops; 564 extern struct vop_ops spec_vnode_vops; 565 extern struct vop_ops dead_vnode_vops; 566 567 extern struct vop_ops *default_vnode_vops_p; 568 extern struct vop_ops *spec_vnode_vops_p; 569 extern struct vop_ops *dead_vnode_vops_p; 570 571 #endif /* _KERNEL */ 572 573 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 574 #endif /* !_SYS_VNODE_H_ */ 575