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_EVENT_H_ 50 #include <sys/event.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 _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 * Struct for mount options to printable formats. 100 */ 101 struct mountctl_opt { 102 int o_opt; 103 const char *o_name; 104 }; 105 106 /* 107 * The vnode infrastructure is being reorgranized. Most reference-related 108 * fields are locked by the BGL, and most file I/O related operations and 109 * vnode teardown functions are locked by the vnode lock. 110 * 111 * File read operations require a shared lock, file write operations require 112 * an exclusive lock. Most directory operations (read or write) currently 113 * require an exclusive lock due to the side effects stored in the directory 114 * inode (which we intend to fix). 115 * 116 * File reads and writes are further protected by a range lock. The intention 117 * is to be able to break I/O operations down into more easily managed pieces 118 * so vm_page arrays can be passed through rather then UIOs. This work will 119 * occur in multiple stages. The range locks will also eventually be used to 120 * deal with clustered cache coherency issues and, more immediately, to 121 * protect operations associated with the kernel-managed journaling module. 122 * 123 * NOTE: Certain fields within the vnode structure requires v_token to be 124 * held. The vnode's normal lock need not be held when accessing 125 * these fields as long as the vnode is deterministically referenced 126 * (i.e. can't be ripped out from under the caller). This is typical 127 * for code paths based on descriptors or file pointers, but not for 128 * backdoor code paths that come in via the buffer cache. 129 * 130 * v_rbclean_tree 131 * v_rbdirty_tree 132 * v_rbhash_tree 133 * v_pollinfo 134 * 135 * NOTE: The vnode operations vector, v_ops, is a double-indirect that 136 * typically points to &v_mount->mnt_vn_use_ops. We use a double 137 * pointer because mnt_vn_use_ops may change dynamically when e.g. 138 * journaling is turned on or off. 139 * 140 * NOTE: v_filesize is currently only applicable when a VM object is 141 * associated with the vnode. Otherwise it will be set to NOOFFSET. 142 * 143 * NOTE: The following fields require a spin or token lock. Note that 144 * additional subsystems may use v_token or v_spin for other 145 * purposes, e.g. vfs/fifofs/fifo_vnops.c 146 * 147 * v_namecache v_spin 148 * v_rb* v_token 149 */ 150 RB_HEAD(buf_rb_tree, buf); 151 RB_HEAD(buf_rb_hash, buf); 152 153 struct vnode { 154 struct spinlock v_spin; 155 int v_flag; /* vnode flags (see below) */ 156 int v_writecount; 157 int v_opencount; /* number of explicit opens */ 158 int v_auxrefs; /* auxiliary references */ 159 struct sysref v_sysref; /* normal references */ 160 struct bio_track v_track_read; /* track I/O's in progress */ 161 struct bio_track v_track_write; /* track I/O's in progress */ 162 struct mount *v_mount; /* ptr to vfs we are in */ 163 struct vop_ops **v_ops; /* vnode operations vector */ 164 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist/cachelist */ 165 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */ 166 struct buf_rb_tree v_rbclean_tree; /* RB tree of clean bufs */ 167 struct buf_rb_tree v_rbdirty_tree; /* RB tree of dirty bufs */ 168 struct buf_rb_hash v_rbhash_tree; /* RB tree general lookup */ 169 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 170 enum vtype v_type; /* vnode type */ 171 union { 172 struct socket *vu_socket; /* unix ipc (VSOCK) */ 173 struct { 174 int vu_umajor; /* device number for attach */ 175 int vu_uminor; 176 struct cdev *vu_cdevinfo; /* device (VCHR, VBLK) */ 177 SLIST_ENTRY(vnode) vu_cdevnext; 178 } vu_cdev; 179 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 180 } v_un; 181 off_t v_filesize; /* file EOF or NOOFFSET */ 182 off_t v_lazyw; /* lazy write iterator */ 183 off_t v_lastw; /* last write (write cluster) */ 184 off_t v_cstart; /* start block of cluster */ 185 off_t v_lasta; /* last allocation */ 186 int v_clen; /* length of current cluster */ 187 struct vm_object *v_object; /* Place to store VM object */ 188 struct lock v_lock; /* file/dir ops lock */ 189 struct lwkt_token v_token; /* (see above) */ 190 enum vtagtype v_tag; /* type of underlying data */ 191 void *v_data; /* private data for fs */ 192 struct namecache_list v_namecache; /* (S) associated nc entries */ 193 struct { 194 struct kqinfo vpi_kqinfo; /* identity of poller(s) */ 195 } v_pollinfo; 196 struct vmresident *v_resident; /* optional vmresident */ 197 struct mount *v_pfsmp; /* real mp for pfs/nullfs mt */ 198 #ifdef DEBUG_LOCKS 199 const char *filename; /* Source file doing locking */ 200 int line; /* Line number doing locking */ 201 #endif 202 }; 203 #define v_socket v_un.vu_socket 204 #define v_umajor v_un.vu_cdev.vu_umajor 205 #define v_uminor v_un.vu_cdev.vu_uminor 206 #define v_rdev v_un.vu_cdev.vu_cdevinfo 207 #define v_cdevnext v_un.vu_cdev.vu_cdevnext 208 #define v_fifoinfo v_un.vu_fifoinfo 209 210 /* 211 * Vnode flags. 212 */ 213 #define VROOT 0x00000001 /* root of its file system */ 214 #define VTEXT 0x00000002 /* vnode is a pure text prototype */ 215 #define VSYSTEM 0x00000004 /* vnode being used by kernel */ 216 #define VISTTY 0x00000008 /* vnode represents a tty */ 217 #define VCTTYISOPEN 0x00000010 /* controlling terminal tty is open */ 218 #define VCKPT 0x00000020 /* checkpoint-restored vnode */ 219 /* open for business 0x00000040 */ 220 #define VMAYHAVELOCKS 0x00000080 /* maybe posix or flock locks on vp */ 221 #define VPFSROOT 0x00000100 /* may be a pseudo filesystem root */ 222 /* open for business 0x00000200 */ 223 #define VAGE0 0x00000400 /* Age count for recycling - 2 bits */ 224 #define VAGE1 0x00000800 /* Age count for recycling - 2 bits */ 225 #define VCACHED 0x00001000 /* No active references but has cache value */ 226 #define VOBJBUF 0x00002000 /* Allocate buffers in VM object */ 227 #define VINACTIVE 0x00004000 /* The vnode is inactive (did VOP_INACTIVE) */ 228 /* open for business 0x00008000 */ 229 #define VOLOCK 0x00010000 /* vnode is locked waiting for an object */ 230 #define VOWANT 0x00020000 /* a process is waiting for VOLOCK */ 231 #define VRECLAIMED 0x00040000 /* This vnode has been destroyed */ 232 #define VFREE 0x00080000 /* This vnode is on the freelist */ 233 #define VNOTSEEKABLE 0x00100000 /* rd/wr ignores file offset */ 234 #define VONWORKLST 0x00200000 /* On syncer work-list */ 235 /* open for business 0x00400000 */ 236 #define VOBJDIRTY 0x00800000 /* object might be dirty */ 237 #define VSWAPCACHE 0x01000000 /* enable swapcache */ 238 /* open for business 0x02000000 */ 239 /* open for business 0x04000000 */ 240 241 /* 242 * vmntvnodescan() flags 243 */ 244 #define VMSC_GETVP 0x01 245 #define VMSC_GETVX 0x02 246 #define VMSC_NOWAIT 0x10 247 #define VMSC_ONEPASS 0x20 248 249 /* 250 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 251 * help with write clustering) 252 */ 253 #define IO_UNIT 0x0001 /* do I/O as atomic unit */ 254 #define IO_APPEND 0x0002 /* append write to end */ 255 #define IO_SYNC 0x0004 /* do I/O synchronously */ 256 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 257 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 258 #define IO_VMIO 0x0020 /* data already in VMIO space */ 259 #define IO_INVAL 0x0040 /* invalidate after I/O */ 260 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 261 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 262 #define IO_RECURSE 0x0200 /* possibly device-recursive (vn) */ 263 #define IO_CORE 0x0400 /* I/O is part of core dump */ 264 #define IO_NRDELAY 0x0800 /* do not block on disk reads */ 265 266 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 267 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 268 269 /* 270 * Modes. Note that these V-modes must match file S_I*USR, SUID, SGID, 271 * and SVTX flag bits. 272 */ 273 #define VSUID 04000 /* set user id on execution */ 274 #define VSGID 02000 /* set group id on execution */ 275 #define VSVTX 01000 /* save swapped text even after use */ 276 #define VREAD 00400 /* read, write, execute permissions */ 277 #define VWRITE 00200 278 #define VEXEC 00100 279 280 /* 281 * Token indicating no attribute value yet assigned. 282 */ 283 #define VNOVAL (-1) 284 285 /* 286 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 287 */ 288 #define VLKTIMEOUT (hz / 20 + 1) 289 290 #ifdef _KERNEL 291 292 /* 293 * Convert between vnode types and inode formats (since POSIX.1 294 * defines mode word of stat structure in terms of inode formats). 295 */ 296 extern enum vtype iftovt_tab[]; 297 extern int vttoif_tab[]; 298 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 299 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 300 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 301 302 /* 303 * Flags to various vnode functions. 304 */ 305 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 306 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 307 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 308 #define DOCLOSE 0x0008 /* vclean: close active files */ 309 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 310 311 #ifdef DIAGNOSTIC 312 #define VATTR_NULL(vap) vattr_null(vap) 313 #else 314 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 315 #endif /* DIAGNOSTIC */ 316 317 #define NULLVP ((struct vnode *)NULL) 318 319 #define VNODEOP_SET(f) \ 320 SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_nadd_vnodeops_sysinit, &f); \ 321 SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND,vfs_nrm_vnodeops_sysinit, &f); 322 323 /* 324 * Global vnode data. 325 */ 326 struct objcache; 327 328 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 329 extern struct nchandle rootnch; /* root (i.e. "/") namecache */ 330 extern int desiredvnodes; /* number of vnodes desired */ 331 extern time_t syncdelay; /* max time to delay syncing data */ 332 extern time_t filedelay; /* time to delay syncing files */ 333 extern time_t dirdelay; /* time to delay syncing directories */ 334 extern time_t metadelay; /* time to delay syncing metadata */ 335 extern struct objcache *namei_oc; 336 extern int prtactive; /* nonzero to call vprint() */ 337 extern struct vattr va_null; /* predefined null vattr structure */ 338 extern int vfs_ioopt; 339 extern int numvnodes; 340 extern int freevnodes; 341 342 /* 343 * Interlock for scanning list of vnodes attached to a mountpoint 344 */ 345 extern struct lwkt_token mntvnode_token; 346 347 /* 348 * This macro is very helpful in defining those offsets in the vdesc struct. 349 * 350 * This is stolen from X11R4. I ignored all the fancy stuff for 351 * Crays, so if you decide to port this to such a serious machine, 352 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 353 */ 354 #define VOPARG_OFFSET(p_type,field) \ 355 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 356 #define VOPARG_OFFSETOF(s_type,field) \ 357 VOPARG_OFFSET(s_type*,field) 358 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 359 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 360 361 typedef int (*vnodeopv_entry_t)(struct vop_generic_args *); 362 363 /* 364 * VOCALL calls an op given an ops vector. We break it out because BSD's 365 * vclean changes the ops vector and then wants to call ops with the old 366 * vector. 367 */ 368 369 typedef int (*vocall_func_t)(struct vop_generic_args *); 370 371 /* 372 * This call executes the vops vector for the offset stored in the ap's 373 * descriptor of the passed vops rather then the one related to the 374 * ap's vop_ops structure. It is used to chain VOPS calls on behalf of 375 * filesystems from a VFS's context ONLY (that is, from a VFS's own vops 376 * vector function). 377 */ 378 #define VOCALL(vops, ap) \ 379 (*(vocall_func_t *)((char *)(vops)+((ap)->a_desc->sd_offset)))(ap) 380 381 #define VDESC(OP) (& __CONCAT(OP,_desc)) 382 383 /* 384 * Public vnode manipulation functions. 385 */ 386 struct file; 387 struct mount; 388 struct nlookupdata; 389 struct proc; 390 struct thread; 391 struct stat; 392 struct ucred; 393 struct uio; 394 struct vattr; 395 struct vnode; 396 struct syncer_ctx; 397 398 struct vnode *getsynthvnode(const char *devname); 399 void addaliasu (struct vnode *vp, int x, int y); 400 int v_associate_rdev(struct vnode *vp, cdev_t dev); 401 void v_release_rdev(struct vnode *vp); 402 int bdevvp (cdev_t dev, struct vnode **vpp); 403 struct vnode *allocvnode(int lktimeout, int lkflags); 404 void allocvnode_gc(void); 405 void vnode_free_rover_scan(int count); 406 int freesomevnodes(int count); 407 int getnewvnode (enum vtagtype tag, struct mount *mp, 408 struct vnode **vpp, int timo, int lkflags); 409 int getspecialvnode (enum vtagtype tag, struct mount *mp, 410 struct vop_ops **ops, struct vnode **vpp, int timo, 411 int lkflags); 412 int speedup_syncer (void); 413 int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, struct ucred *); 414 void vattr_null (struct vattr *vap); 415 int vcount (struct vnode *vp); 416 int vfinddev (cdev_t dev, enum vtype type, struct vnode **vpp); 417 void vfs_nadd_vnodeops_sysinit (void *); 418 void vfs_nrm_vnodeops_sysinit (void *); 419 void vfs_add_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 420 void vfs_rm_vnodeops(struct mount *, struct vop_ops *, struct vop_ops **); 421 int vflush (struct mount *mp, int rootrefs, int flags); 422 int vmntvnodescan(struct mount *mp, int flags, 423 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data), 424 int (*slowfunc)(struct mount *mp, struct vnode *vp, void *data), 425 void *data); 426 void insmntque(struct vnode *vp, struct mount *mp); 427 428 void vclean_vxlocked (struct vnode *vp, int flags); 429 void vclean_unlocked (struct vnode *vp); 430 void vgone_vxlocked (struct vnode *vp); 431 int vrevoke (struct vnode *vp, struct ucred *cred); 432 int vinvalbuf (struct vnode *vp, int save, int slpflag, int slptimeo); 433 int vtruncbuf (struct vnode *vp, off_t length, int blksize); 434 void vnode_pager_setsize (struct vnode *, vm_ooffset_t); 435 int nvtruncbuf (struct vnode *vp, off_t length, int blksize, int boff, 436 int trivial); 437 int nvextendbuf(struct vnode *vp, off_t olength, off_t nlength, 438 int oblksize, int nblksize, 439 int oboff, int nboff, int trivial); 440 void nvnode_pager_setsize (struct vnode *vp, off_t length, 441 int blksize, int boff); 442 int vfsync(struct vnode *vp, int waitfor, int passes, 443 int (*checkdef)(struct buf *), 444 int (*waitoutput)(struct vnode *, struct thread *)); 445 int vinitvmio(struct vnode *vp, off_t filesize, int blksize, int boff); 446 void vprint (char *label, struct vnode *vp); 447 int vrecycle (struct vnode *vp); 448 int vmaxiosize (struct vnode *vp); 449 void vn_strategy(struct vnode *vp, struct bio *bio); 450 int vn_cache_strategy(struct vnode *vp, struct bio *bio); 451 int vn_close (struct vnode *vp, int flags); 452 void vn_gone (struct vnode *vp); 453 int vn_isdisk (struct vnode *vp, int *errp); 454 int vn_islocked (struct vnode *vp); 455 int vn_islocked_unlock (struct vnode *vp); 456 void vn_islocked_relock (struct vnode *vp, int vpls); 457 int vn_lock (struct vnode *vp, int flags); 458 void vn_unlock (struct vnode *vp); 459 460 #ifdef DEBUG_LOCKS 461 int debug_vn_lock (struct vnode *vp, int flags, 462 const char *filename, int line); 463 #define vn_lock(vp,flags) debug_vn_lock(vp, flags, __FILE__, __LINE__) 464 #endif 465 466 /*#define DEBUG_VN_UNLOCK*/ 467 #ifdef DEBUG_VN_UNLOCK 468 void debug_vn_unlock (struct vnode *vp, 469 const char *filename, int line); 470 #define vn_unlock(vp) debug_vn_unlock(vp, __FILE__, __LINE__) 471 #endif 472 473 int vn_get_namelen(struct vnode *, int *); 474 void vn_setspecops (struct file *fp); 475 int vn_fullpath (struct proc *p, struct vnode *vn, char **retbuf, char **freebuf, int guess); 476 int vn_open (struct nlookupdata *ndp, struct file *fp, int fmode, int cmode); 477 int vn_opendisk (const char *devname, int fmode, struct vnode **vpp); 478 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base, 479 int len, off_t offset, enum uio_seg segflg, int ioflg, 480 struct ucred *cred, int *aresid); 481 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base, 482 int len, off_t offset, enum uio_seg segflg, int ioflg, 483 struct ucred *cred, int *aresid); 484 int vn_stat (struct vnode *vp, struct stat *sb, struct ucred *cred); 485 cdev_t vn_todev (struct vnode *vp); 486 void vfs_timestamp (struct timespec *); 487 size_t vfs_flagstostr(int flags, const struct mountctl_opt *optp, char *buf, size_t len, int *errorp); 488 void vn_mark_atime(struct vnode *vp, struct thread *td); 489 int vn_writechk (struct vnode *vp, struct nchandle *nch); 490 int ncp_writechk(struct nchandle *nch); 491 int vop_stdopen (struct vop_open_args *ap); 492 int vop_stdclose (struct vop_close_args *ap); 493 int vop_stdmountctl(struct vop_mountctl_args *ap); 494 int vop_stdgetpages(struct vop_getpages_args *ap); 495 int vop_stdputpages(struct vop_putpages_args *ap); 496 int vop_stdmarkatime(struct vop_markatime_args *ap); 497 int vop_stdnoread(struct vop_read_args *ap); 498 int vop_stdnowrite(struct vop_write_args *ap); 499 int vop_stdpathconf (struct vop_pathconf_args *ap); 500 int vop_eopnotsupp (struct vop_generic_args *ap); 501 int vop_ebadf (struct vop_generic_args *ap); 502 int vop_einval (struct vop_generic_args *ap); 503 int vop_enotty (struct vop_generic_args *ap); 504 int vop_defaultop (struct vop_generic_args *ap); 505 int vop_null (struct vop_generic_args *ap); 506 int vop_panic (struct vop_generic_args *ap); 507 int vop_write_dirent(int *, struct uio *, ino_t, uint8_t, uint16_t, 508 const char *); 509 510 int vop_compat_nresolve(struct vop_nresolve_args *ap); 511 int vop_compat_nlookupdotdot(struct vop_nlookupdotdot_args *ap); 512 int vop_compat_ncreate(struct vop_ncreate_args *ap); 513 int vop_compat_nmkdir(struct vop_nmkdir_args *ap); 514 int vop_compat_nmknod(struct vop_nmknod_args *ap); 515 int vop_compat_nlink(struct vop_nlink_args *ap); 516 int vop_compat_nsymlink(struct vop_nsymlink_args *ap); 517 int vop_compat_nwhiteout(struct vop_nwhiteout_args *ap); 518 int vop_compat_nremove(struct vop_nremove_args *ap); 519 int vop_compat_nrmdir(struct vop_nrmdir_args *ap); 520 int vop_compat_nrename(struct vop_nrename_args *ap); 521 522 void vx_lock (struct vnode *vp); 523 void vx_unlock (struct vnode *vp); 524 void vx_get (struct vnode *vp); 525 int vx_get_nonblock (struct vnode *vp); 526 void vx_put (struct vnode *vp); 527 int vget (struct vnode *vp, int lockflag); 528 void vput (struct vnode *vp); 529 void vhold (struct vnode *); 530 void vhold_interlocked (struct vnode *); 531 void vdrop (struct vnode *); 532 void vref (struct vnode *vp); 533 void vrele (struct vnode *vp); 534 void vsetflags (struct vnode *vp, int flags); 535 void vclrflags (struct vnode *vp, int flags); 536 537 /*#define DEBUG_VPUT*/ 538 #ifdef DEBUG_VPUT 539 void debug_vput (struct vnode *vp, const char *filename, int line); 540 #define vput(vp) debug_vput(vp, __FILE__, __LINE__) 541 #endif 542 543 void vfs_subr_init(void); 544 void vfs_mount_init(void); 545 void vfs_lock_init(void); 546 void vfs_sync_init(void); 547 void mount_init(struct mount *mp); 548 549 void vn_syncer_add(struct vnode *, int); 550 void vn_syncer_remove(struct vnode *); 551 void vn_syncer_thr_create(struct mount *); 552 void *vn_syncer_thr_getctx(struct mount *); 553 void vn_syncer_thr_stop(void *); 554 555 extern struct vop_ops default_vnode_vops; 556 extern struct vop_ops dead_vnode_vops; 557 558 extern struct vop_ops *default_vnode_vops_p; 559 extern struct vop_ops *dead_vnode_vops_p; 560 561 #endif /* _KERNEL */ 562 563 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 564 #endif /* !_SYS_VNODE_H_ */ 565