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 1.83 2008/09/17 21:44:19 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_RPC_H_ 77 #include <sys/syslink_rpc.h> 78 #endif 79 #ifndef _SYS_SYSREF_H_ 80 #include <sys/sysref.h> 81 #endif 82 #ifndef _SYS_CCMS_H_ 83 #include <sys/ccms.h> 84 #endif 85 #ifndef _MACHINE_LOCK_H_ 86 #include <machine/lock.h> 87 #endif 88 89 /* 90 * The vnode is the focus of all file activity in UNIX. There is a 91 * unique vnode allocated for each active file, each current directory, 92 * each mounted-on file, text file, and the root. 93 */ 94 95 /* 96 * Each underlying filesystem allocates its own private area and hangs 97 * it from v_data. If non-null, this area is freed in getnewvnode(). 98 */ 99 TAILQ_HEAD(buflists, buf); 100 101 /* 102 * Range locks protect offset ranges in files and directories at a high 103 * level, allowing the actual I/O to be broken down into smaller pieces. 104 * Range locks will eventually be integrated into the clustered cache 105 * coherency infrastructure. 106 * 107 * We use a simple data structure for now, but eventually this should 108 * probably be a btree or red-black tree. 109 */ 110 struct vrangelock; 111 112 TAILQ_HEAD(vrangelock_list, vrangelock); 113 114 struct vrangehead { 115 struct vrangelock_list vh_list; 116 }; 117 118 struct vrangelock { 119 TAILQ_ENTRY(vrangelock) vr_node; 120 int vr_flags; 121 off_t vr_offset; 122 off_t vr_length; 123 }; 124 125 #define RNGL_WAITING 0x0001 /* waiting for lock, else has lock */ 126 #define RNGL_CHECK 0x0002 /* check for work on unlock */ 127 #define RNGL_SHARED 0x0004 /* shared lock, else exclusive */ 128 #define RNGL_ONLIST 0x0008 /* sanity check */ 129 130 static __inline 131 void 132 vrange_init(struct vrangelock *vr, int flags, off_t offset, off_t length) 133 { 134 vr->vr_flags = flags; 135 vr->vr_offset = offset; 136 vr->vr_length = length; 137 } 138 139 #ifdef _KERNEL 140 141 void vrange_lock(struct vnode *vp, struct vrangelock *vr); 142 void vrange_unlock(struct vnode *vp, struct vrangelock *vr); 143 144 static __inline 145 void 146 vrange_lock_shared(struct vnode *vp, struct vrangelock *vr, 147 off_t offset, off_t length) 148 { 149 vrange_init(vr, RNGL_SHARED, offset, length); 150 vrange_lock(vp, vr); 151 } 152 153 static __inline 154 void 155 vrange_lock_excl(struct vnode *vp, struct vrangelock *vr, 156 off_t offset, off_t length) 157 { 158 vrange_init(vr, 0, offset, length); 159 vrange_lock(vp, vr); 160 } 161 162 #endif 163 164 /* 165 * The vnode infrastructure is being reorgranized. Most reference-related 166 * fields are locked by the BGL, and most file I/O related operations and 167 * vnode teardown functions are locked by the vnode lock. 168 * 169 * File read operations require a shared lock, file write operations require 170 * an exclusive lock. Most directory operations (read or write) currently 171 * require an exclusive lock due to the side effects stored in the directory 172 * inode (which we intend to fix). 173 * 174 * File reads and writes are further protected by a range lock. The intention 175 * is to be able to break I/O operations down into more easily managed pieces 176 * so vm_page arrays can be passed through rather then UIOs. This work will 177 * occur in multiple stages. The range locks will also eventually be used to 178 * deal with clustered cache coherency issues and, more immediately, to 179 * protect operations associated with the kernel-managed journaling module. 180 * 181 * Certain fields within the vnode structure requires v_token to be held. 182 * 183 * v_rbclean_tree 184 * v_rbdirty_tree 185 * v_rbhash_tree 186 * v_pollinfo 187 * 188 * NOTE: The vnode operations vector, v_ops, is a double-indirect that 189 * typically points to &v_mount->mnt_vn_use_ops. We use a double 190 * pointer because mnt_vn_use_ops may change dynamically when e.g. 191 * journaling is turned on or off. 192 * 193 * NOTE: v_filesize is currently only applicable when a VM object is 194 * associated with the vnode. Otherwise it will be set to NOOFFSET. 195 */ 196 RB_HEAD(buf_rb_tree, buf); 197 RB_HEAD(buf_rb_hash, buf); 198 199 struct vnode { 200 int v_flag; /* vnode flags (see below) */ 201 int v_writecount; 202 int v_opencount; /* number of explicit opens */ 203 int v_auxrefs; /* auxiliary references */ 204 struct sysref v_sysref; /* normal references */ 205 struct bio_track v_track_read; /* track I/O's in progress */ 206 struct bio_track v_track_write; /* track I/O's in progress */ 207 struct mount *v_mount; /* ptr to vfs we are in */ 208 struct vop_ops **v_ops; /* vnode operations vector */ 209 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 210 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */ 211 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */ 212 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */ 213 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */ 214 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 215 enum vtype v_type; /* vnode type */ 216 union { 217 struct socket *vu_socket; /* unix ipc (VSOCK) */ 218 struct { 219 int vu_umajor; /* device number for attach */ 220 int vu_uminor; 221 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */ 222 SLIST_ENTRY(vnode) vu_cdevnext; 223 } vu_cdev; 224 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 225 } v_un; 226 off_t v_filesize; /* file EOF or NOOFFSET */ 227 off_t v_lazyw; /* lazy write iterator */ 228 off_t v_lastw; /* last write (write cluster) */ 229 off_t v_cstart; /* start block of cluster */ 230 off_t v_lasta; /* last allocation */ 231 int v_clen; /* length of current cluster */ 232 struct vm_object *v_object; /* Place to store VM object */ 233 struct lock v_lock; /* file/dir ops lock */ 234 struct lwkt_token v_token; /* structural access */ 235 enum vtagtype v_tag; /* type of underlying data */ 236 void *v_data; /* private data for fs */ 237 struct namecache_list v_namecache; /* associated nc entries */ 238 struct { 239 struct selinfo vpi_selinfo; /* identity of poller(s) */ 240 short vpi_events; /* what they are looking for */ 241 short vpi_revents; /* what has happened */ 242 } v_pollinfo; 243 struct vmresident *v_resident; /* optional vmresident */ 244 struct vrangehead v_range; /* range lock */ 245 struct ccms_dataspace v_ccms; /* cache coherency */ 246 #ifdef DEBUG_LOCKS 247 const char *filename; /* Source file doing locking */ 248 int line; /* Line number doing locking */ 249 #endif 250 void *v_xaddr; 251 }; 252 #define v_socket v_un.vu_socket 253 #define v_umajor v_un.vu_cdev.vu_umajor 254 #define v_uminor v_un.vu_cdev.vu_uminor 255 #define v_rdev v_un.vu_cdev.vu_cdevinfo 256 #define v_cdevnext v_un.vu_cdev.vu_cdevnext 257 #define v_fifoinfo v_un.vu_fifoinfo 258 #define v_spinlock v_lock.lk_spinlock 259 260 #define VN_POLLEVENT(vp, events) \ 261 do { \ 262 if ((vp)->v_pollinfo.vpi_events & (events)) \ 263 vn_pollevent((vp), (events)); \ 264 } while (0) 265 266 /* 267 * Vnode flags. 268 */ 269 #define VROOT 0x00000001 /* root of its file system */ 270 #define VTEXT 0x00000002 /* vnode is a pure text prototype */ 271 #define VSYSTEM 0x00000004 /* vnode being used by kernel */ 272 #define VISTTY 0x00000008 /* vnode represents a tty */ 273 #define VCTTYISOPEN 0x00000010 /* controlling terminal tty is open */ 274 #define VCKPT 0x00000020 /* checkpoint-restored vnode */ 275 #define VFSMID 0x00000040 /* request FSMID update */ 276 #define VMAYHAVELOCKS 0x00000080 /* maybe posix or flock locks on vp */ 277 #define VPFSROOT 0x00000100 /* may be a pseudo filesystem root */ 278 /* open for business 0x00000200 */ 279 /* open for business 0x00000400 */ 280 /* open for business 0x00000800 */ 281 #define VCACHED 0x00001000 /* No active references but has cache value */ 282 #define VOBJBUF 0x00002000 /* Allocate buffers in VM object */ 283 #define VINACTIVE 0x00004000 /* The vnode is inactive (did VOP_INACTIVE) */ 284 #define VAGE 0x00008000 /* Insert vnode at head of free list */ 285 #define VOLOCK 0x00010000 /* vnode is locked waiting for an object */ 286 #define VOWANT 0x00020000 /* a process is waiting for VOLOCK */ 287 #define VRECLAIMED 0x00040000 /* This vnode has been destroyed */ 288 #define VFREE 0x00080000 /* This vnode is on the freelist */ 289 #define VNOTSEEKABLE 0x00100000 /* rd/wr ignores file offset */ 290 #define VONWORKLST 0x00200000 /* On syncer work-list */ 291 #define VMOUNT 0x00400000 /* Mount in progress */ 292 #define VOBJDIRTY 0x00800000 /* object might be dirty */ 293 294 #define VMP_READ 0x01000000 /* supports MPSAFE read */ 295 #define VMP_WRITE 0x02000000 /* supports MPSAFE write */ 296 #define VMP_GETATTR 0x04000000 /* supports MPSAFE getattr */ 297 298 /* 299 * vmntvnodescan() flags 300 */ 301 #define VMSC_GETVP 0x01 302 #define VMSC_GETVX 0x02 303 #define VMSC_NOWAIT 0x10 304 #define VMSC_ONEPASS 0x20 305 306 /* 307 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 308 * help with write clustering) 309 */ 310 #define IO_UNIT 0x0001 /* do I/O as atomic unit */ 311 #define IO_APPEND 0x0002 /* append write to end */ 312 #define IO_SYNC 0x0004 /* do I/O synchronously */ 313 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 314 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 315 #define IO_VMIO 0x0020 /* data already in VMIO space */ 316 #define IO_INVAL 0x0040 /* invalidate after I/O */ 317 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 318 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 319 #define IO_RECURSE 0x0200 /* possibly device-recursive (vn) */ 320 #define IO_CORE 0x0400 /* I/O is part of core dump */ 321 322 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 323 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 324 325 /* 326 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID, 327 * and SVTX flag bits. 328 */ 329 #define VSUID 04000 /* set user id on execution */ 330 #define VSGID 02000 /* set group id on execution */ 331 #define VSVTX 01000 /* save swapped text even after use */ 332 #define VREAD 00400 /* read, write, execute permissions */ 333 #define VWRITE 00200 334 #define VEXEC 00100 335 336 /* 337 * Token indicating no attribute value yet assigned. 338 */ 339 #define VNOVAL (-1) 340 341 /* 342 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 343 */ 344 #define VLKTIMEOUT (hz / 20 + 1) 345 346 #ifdef _KERNEL 347 348 /* 349 * Convert between vnode types and inode formats (since POSIX.1 350 * defines mode word of stat structure in terms of inode formats). 351 */ 352 extern enum vtype iftovt_tab[]; 353 extern int vttoif_tab[]; 354 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 355 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 356 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 357 358 /* 359 * Flags to various vnode functions. 360 */ 361 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 362 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 363 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 364 #define DOCLOSE 0x0008 /* vclean: close active files */ 365 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 366 367 #ifdef DIAGNOSTIC 368 #define VATTR_NULL(vap) vattr_null(vap) 369 #else 370 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 371 #endif /* DIAGNOSTIC */ 372 373 #define NULLVP ((struct vnode *)NULL) 374 375 #define VNODEOP_SET(f) \ 376 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \ 377 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f); 378 379 /* 380 * Global vnode data. 381 */ 382 struct objcache; 383 384 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 385 extern struct nchandle rootnch; /* root (i.e. "/") namecache */ 386 extern int desiredvnodes; /* number of vnodes desired */ 387 extern time_t syncdelay; /* max time to delay syncing data */ 388 extern time_t filedelay; /* time to delay syncing files */ 389 extern time_t dirdelay; /* time to delay syncing directories */ 390 extern time_t metadelay; /* time to delay syncing metadata */ 391 extern struct objcache *namei_oc; 392 extern int prtactive; /* nonzero to call vprint() */ 393 extern struct vattr va_null; /* predefined null vattr structure */ 394 extern int vfs_ioopt; 395 extern int numvnodes; 396 extern int freevnodes; 397 extern int vfs_fastdev; /* fast specfs device access */ 398 399 /* 400 * Interlock for scanning list of vnodes attached to a mountpoint 401 */ 402 extern struct lwkt_token mntvnode_token; 403 404 /* 405 * This macro is very helpful in defining those offsets in the vdesc struct. 406 * 407 * This is stolen from X11R4. I ignored all the fancy stuff for 408 * Crays, so if you decide to port this to such a serious machine, 409 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 410 */ 411 #define VOPARG_OFFSET(p_type,field) \ 412 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 413 #define VOPARG_OFFSETOF(s_type,field) \ 414 VOPARG_OFFSET(s_type*,field) 415 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 416 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 417 418 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *); 419 420 /* 421 * VOCALL calls an op given an ops vector. We break it out because BSD's 422 * vclean changes the ops vector and then wants to call ops with the old 423 * vector. 424 */ 425 426 typedef int (*vocall_func_t)(struct vop_generic_args *); 427 428 /* 429 * This call executes the vops vector for the offset stored in the ap's 430 * descriptor of the passed vops rather then the one related to the 431 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of 432 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops 433 * vector function). 434 */ 435 #define VOCALL(vops, ap) \ 436 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap) 437 438 #define VDESC(OP) (& __CONCAT(OP,_desc)) 439 440 /* 441 * Public vnode manipulation functions. 442 */ 443 struct file; 444 struct mount; 445 struct nlookupdata; 446 struct proc; 447 struct thread; 448 struct stat; 449 struct ucred; 450 struct uio; 451 struct vattr; 452 struct vnode; 453 454 struct vnode *getsynthvnode(const char *devname); 455 void addaliasu (struct vnode *vp, int x, int y); 456 int v_associate_rdev(struct vnode *vp, cdev_t dev); 457 void v_release_rdev(struct vnode *vp); 458 int bdevvp (cdev_t dev, struct vnode **vpp); 459 struct vnode *allocvnode(int lktimeout, int lkflags); 460 int freesomevnodes(int count); 461 int getnewvnode (enum vtagtype tag, struct mount *mp, 462 struct vnode **vpp, int timo, int lkflags); 463 int getspecialvnode (enum vtagtype tag, struct mount *mp, 464 struct vop_ops **ops, struct vnode **vpp, int timo, 465 int lkflags); 466 int spec_vnoperate (struct vop_generic_args *); 467 int speedup_syncer (void); 468 void vattr_null (struct vattr *vap); 469 int vcount (struct vnode *vp); 470 int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp); 471 void vfs_nadd_vnodeops_sysinit (void *); 472 void vfs_nrm_vnodeops_sysinit (void *); 473 void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 474 void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 475 int vflush (struct mount *mp, int rootrefs, int flags); 476 int vmntvnodescan(struct mount *mp, int flags, 477 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data), 478 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data), 479 void *data); 480 void insmntque(struct vnode *vp, struct mount *mp); 481 482 void vclean_vxlocked (struct vnode *vp, int flags); 483 void vclean_unlocked (struct vnode *vp); 484 void vgone_vxlocked (struct vnode *vp); 485 void vupdatefsmid (struct vnode *vp); 486 int vrevoke (struct vnode *vp, struct ucred *cred); 487 int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo); 488 int vtruncbuf (struct vnode *vp, off_t length, int blksize); 489 int vfsync(struct vnode *vp, int waitfor, int passes, 490 int (*checkdef)(struct buf *), 491 int (*waitoutput)(struct vnode *, struct thread *)); 492 int vinitvmio(struct vnode *vp, off_t filesize); 493 void vprint (char *label, struct vnode *vp); 494 int vrecycle (struct vnode *vp); 495 int vmaxiosize (struct vnode *vp); 496 void vn_strategy(struct vnode *vp, struct bio *bio); 497 int vn_close (struct vnode *vp, int flags); 498 int vn_isdisk (struct vnode *vp, int *errp); 499 int vn_lock (struct vnode *vp, int flags); 500 int vn_islocked (struct vnode *vp); 501 void vn_unlock (struct vnode *vp); 502 #ifdef DEBUG_LOCKS 503 int debug_vn_lock (struct vnode *vp, int flags, 504 const char *filename, int line); 505 #define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__) 506 #endif 507 508 int vn_get_namelen(struct vnode *, int *); 509 void vn_setspecops (struct file *fp); 510 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf); 511 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode); 512 int vn_opendisk (const char *devname, int fmode, struct vnode **vpp); 513 void vn_pollevent (struct vnode *vp, int events); 514 void vn_pollgone (struct vnode *vp); 515 int vn_pollrecord (struct vnode *vp, int events); 516 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base, 517 int len, off_t offset, enum uio_seg segflg, int ioflg, 518 struct ucred *cred, int *aresid); 519 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base, 520 int len, off_t offset, enum uio_seg segflg, int ioflg, 521 struct ucred *cred, int *aresid); 522 int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred); 523 cdev_t vn_todev (struct vnode *vp); 524 void vfs_timestamp (struct timespec *); 525 void vn_mark_atime(struct vnode *vp, struct thread *td); 526 int vn_writechk (struct vnode *vp, struct nchandle *nch); 527 int ncp_writechk(struct nchandle *nch); 528 int vop_stdopen (struct vop_open_args *ap); 529 int vop_stdclose (struct vop_close_args *ap); 530 int vop_stdgetpages(struct vop_getpages_args *ap); 531 int vop_stdputpages(struct vop_putpages_args *ap); 532 int vop_stdmarkatime(struct vop_markatime_args *ap); 533 int vop_nopoll (struct vop_poll_args *ap); 534 int vop_stdpathconf (struct vop_pathconf_args *ap); 535 int vop_stdpoll (struct vop_poll_args *ap); 536 int vop_eopnotsupp (struct vop_generic_args *ap); 537 int vop_ebadf (struct vop_generic_args *ap); 538 int vop_einval (struct vop_generic_args *ap); 539 int vop_enotty (struct vop_generic_args *ap); 540 int vop_defaultop (struct vop_generic_args *ap); 541 int vop_null (struct vop_generic_args *ap); 542 int vop_panic (struct vop_generic_args *ap); 543 int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t, 544 const char *); 545 546 int vop_compat_nresolve(struct vop_nresolve_args *ap); 547 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap); 548 int vop_compat_ncreate(struct vop_ncreate_args *ap); 549 int vop_compat_nmkdir(struct vop_nmkdir_args *ap); 550 int vop_compat_nmknod(struct vop_nmknod_args *ap); 551 int vop_compat_nlink(struct vop_nlink_args *ap); 552 int vop_compat_nsymlink(struct vop_nsymlink_args *ap); 553 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap); 554 int vop_compat_nremove(struct vop_nremove_args *ap); 555 int vop_compat_nrmdir(struct vop_nrmdir_args *ap); 556 int vop_compat_nrename(struct vop_nrename_args *ap); 557 558 void vx_lock (struct vnode *vp); 559 void vx_unlock (struct vnode *vp); 560 void vx_get (struct vnode *vp); 561 int vx_get_nonblock (struct vnode *vp); 562 void vx_put (struct vnode *vp); 563 int vget (struct vnode *vp, int lockflag); 564 void vput (struct vnode *vp); 565 void vhold (struct vnode *); 566 void vdrop (struct vnode *); 567 void vref (struct vnode *vp); 568 void vrele (struct vnode *vp); 569 void vsetflags (struct vnode *vp, int flags); 570 void vclrflags (struct vnode *vp, int flags); 571 572 void vfs_subr_init(void); 573 void vfs_mount_init(void); 574 void vfs_lock_init(void); 575 void vfs_sync_init(void); 576 577 void vn_syncer_add_to_worklist(struct vnode *, int); 578 void vnlru_proc_wait(void); 579 580 extern struct vop_ops default_vnode_vops; 581 extern struct vop_ops spec_vnode_vops; 582 extern struct vop_ops dead_vnode_vops; 583 584 extern struct vop_ops *default_vnode_vops_p; 585 extern struct vop_ops *spec_vnode_vops_p; 586 extern struct vop_ops *dead_vnode_vops_p; 587 588 #endif /* _KERNEL */ 589 590 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 591 #endif /* !_SYS_VNODE_H_ */ 592