vnode.h revision 70834
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: head/sys/sys/vnode.h 70834 2001-01-09 04:33:49Z wollman $ 35 */ 36 37#ifndef _SYS_VNODE_H_ 38#define _SYS_VNODE_H_ 39 40#include <sys/lock.h> 41#include <sys/mutex.h> 42#include <sys/queue.h> 43#include <sys/selinfo.h> 44#include <sys/uio.h> 45#include <sys/acl.h> 46 47/* 48 * The vnode is the focus of all file activity in UNIX. There is a 49 * unique vnode allocated for each active file, each current directory, 50 * each mounted-on file, text file, and the root. 51 */ 52 53/* 54 * Vnode types. VNON means no type. 55 */ 56enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 57 58/* 59 * Vnode tag types. 60 * These are for the benefit of external programs only (e.g., pstat) 61 * and should NEVER be inspected by the kernel. 62 */ 63enum vtagtype { 64 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 65 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 66 VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 67 VT_HPFS, VT_NWFS 68}; 69 70/* 71 * Each underlying filesystem allocates its own private area and hangs 72 * it from v_data. If non-null, this area is freed in getnewvnode(). 73 */ 74TAILQ_HEAD(buflists, buf); 75 76typedef int vop_t __P((void *)); 77struct namecache; 78 79/* 80 * Reading or writing any of these items requires holding the appropriate lock. 81 * v_freelist is locked by the global vnode_free_list simple lock. 82 * v_mntvnodes is locked by the global mntvnodes simple lock. 83 * v_flag, v_usecount, v_holdcount and v_writecount are 84 * locked by the v_interlock mutex. 85 * v_pollinfo is locked by the lock contained inside it. 86 */ 87struct vnode { 88 u_long v_flag; /* vnode flags (see below) */ 89 int v_usecount; /* reference count of users */ 90 int v_writecount; /* reference count of writers */ 91 int v_holdcnt; /* page & buffer references */ 92 u_long v_id; /* capability identifier */ 93 struct mount *v_mount; /* ptr to vfs we are in */ 94 vop_t **v_op; /* vnode operations vector */ 95 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 96 LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ 97 struct buflists v_cleanblkhd; /* clean blocklist head */ 98 struct buflists v_dirtyblkhd; /* dirty blocklist head */ 99 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 100 long v_numoutput; /* num of writes in progress */ 101 enum vtype v_type; /* vnode type */ 102 union { 103 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 104 struct socket *vu_socket; /* unix ipc (VSOCK) */ 105 struct { 106 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 107 SLIST_ENTRY(vnode) vu_specnext; 108 } vu_spec; 109 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 110 } v_un; 111 struct nqlease *v_lease; /* Soft reference to lease */ 112 daddr_t v_lastw; /* last write (write cluster) */ 113 daddr_t v_cstart; /* start block of cluster */ 114 daddr_t v_lasta; /* last allocation */ 115 int v_clen; /* length of current cluster */ 116 struct vm_object *v_object; /* Place to store VM object */ 117 struct mtx v_interlock; /* lock on usecount and flag */ 118 struct lock v_lock; /* used if fs don't have one */ 119 struct lock *v_vnlock; /* pointer to vnode lock */ 120 enum vtagtype v_tag; /* type of underlying data */ 121 void *v_data; /* private data for fs */ 122 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 123 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 124 struct vnode *v_dd; /* .. vnode */ 125 u_long v_ddid; /* .. capability identifier */ 126 struct { 127 struct simplelock vpi_lock; /* lock to protect below */ 128 struct selinfo vpi_selinfo; /* identity of poller(s) */ 129 short vpi_events; /* what they are looking for */ 130 short vpi_revents; /* what has happened */ 131 } v_pollinfo; 132 struct proc *v_vxproc; /* proc owning VXLOCK */ 133#ifdef DEBUG_LOCKS 134 const char *filename; /* Source file doing locking */ 135 int line; /* Line number doing locking */ 136#endif 137}; 138#define v_mountedhere v_un.vu_mountedhere 139#define v_socket v_un.vu_socket 140#define v_rdev v_un.vu_spec.vu_specinfo 141#define v_specnext v_un.vu_spec.vu_specnext 142#define v_fifoinfo v_un.vu_fifoinfo 143 144#define VN_POLLEVENT(vp, events) \ 145 do { \ 146 if ((vp)->v_pollinfo.vpi_events & (events)) \ 147 vn_pollevent((vp), (events)); \ 148 } while (0) 149 150/* 151 * Vnode flags. 152 */ 153#define VROOT 0x00001 /* root of its file system */ 154#define VTEXT 0x00002 /* vnode is a pure text prototype */ 155#define VSYSTEM 0x00004 /* vnode being used by kernel */ 156#define VISTTY 0x00008 /* vnode represents a tty */ 157#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 158#define VXWANT 0x00200 /* process is waiting for vnode */ 159#define VBWAIT 0x00400 /* waiting for output to complete */ 160/* open for business 0x00800 */ 161/* open for business 0x01000 */ 162#define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 163#define VCOPYONWRITE 0x04000 /* vnode is doing copy-on-write */ 164#define VAGE 0x08000 /* Insert vnode at head of free list */ 165#define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 166#define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 167#define VDOOMED 0x40000 /* This vnode is being recycled */ 168#define VFREE 0x80000 /* This vnode is on the freelist */ 169/* open for business 0x100000 */ 170#define VONWORKLST 0x200000 /* On syncer work-list */ 171#define VMOUNT 0x400000 /* Mount in progress */ 172 173/* 174 * Vnode attributes. A field value of VNOVAL represents a field whose value 175 * is unavailable (getattr) or which is not to be changed (setattr). 176 */ 177struct vattr { 178 enum vtype va_type; /* vnode type (for create) */ 179 u_short va_mode; /* files access mode and type */ 180 short va_nlink; /* number of references to file */ 181 uid_t va_uid; /* owner user id */ 182 gid_t va_gid; /* owner group id */ 183 udev_t va_fsid; /* file system id */ 184 long va_fileid; /* file id */ 185 u_quad_t va_size; /* file size in bytes */ 186 long va_blocksize; /* blocksize preferred for i/o */ 187 struct timespec va_atime; /* time of last access */ 188 struct timespec va_mtime; /* time of last modification */ 189 struct timespec va_ctime; /* time file changed */ 190 u_long va_gen; /* generation number of file */ 191 u_long va_flags; /* flags defined for file */ 192 udev_t va_rdev; /* device the special file represents */ 193 u_quad_t va_bytes; /* bytes of disk space held by file */ 194 u_quad_t va_filerev; /* file modification number */ 195 u_int va_vaflags; /* operations flags, see below */ 196 long va_spare; /* remain quad aligned */ 197}; 198 199/* 200 * Flags for va_vaflags. 201 */ 202#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 203#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 204 205/* 206 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 207 * help with write clustering) 208 */ 209#define IO_UNIT 0x01 /* do I/O as atomic unit */ 210#define IO_APPEND 0x02 /* append write to end */ 211#define IO_SYNC 0x04 /* do I/O synchronously */ 212#define IO_NODELOCKED 0x08 /* underlying node already locked */ 213#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 214#define IO_VMIO 0x20 /* data already in VMIO space */ 215#define IO_INVAL 0x40 /* invalidate after I/O */ 216#define IO_ASYNC 0x80 /* bawrite rather then bdwrite */ 217 218/* 219 * Modes. Some values same as Ixxx entries from inode.h for now. 220 */ 221#define VADMIN 010000 /* permission to administer vnode */ 222#define VSUID 004000 /* set user id on execution */ 223#define VSGID 002000 /* set group id on execution */ 224#define VSVTX 001000 /* save swapped text even after use */ 225#define VREAD 000400 /* read, write, execute permissions */ 226#define VWRITE 000200 227#define VEXEC 000100 228 229/* 230 * Token indicating no attribute value yet assigned. 231 */ 232#define VNOVAL (-1) 233 234#ifdef _KERNEL 235 236#ifdef MALLOC_DECLARE 237MALLOC_DECLARE(M_VNODE); 238#endif 239 240/* 241 * Convert between vnode types and inode formats (since POSIX.1 242 * defines mode word of stat structure in terms of inode formats). 243 */ 244extern enum vtype iftovt_tab[]; 245extern int vttoif_tab[]; 246#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 247#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 248#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 249 250/* 251 * Flags to various vnode functions. 252 */ 253#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 254#define FORCECLOSE 0x0002 /* vflush: force file closure */ 255#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 256#define DOCLOSE 0x0008 /* vclean: close active files */ 257#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 258#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 259#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ 260#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */ 261#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */ 262 263#define VREF(vp) vref(vp) 264 265 266#ifdef DIAGNOSTIC 267#define VATTR_NULL(vap) vattr_null(vap) 268#else 269#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 270#endif /* DIAGNOSTIC */ 271 272#define NULLVP ((struct vnode *)NULL) 273 274#define VNODEOP_SET(f) \ 275 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 276 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 277 278/* 279 * Global vnode data. 280 */ 281extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 282extern int desiredvnodes; /* number of vnodes desired */ 283extern time_t syncdelay; /* max time to delay syncing data */ 284extern time_t filedelay; /* time to delay syncing files */ 285extern time_t dirdelay; /* time to delay syncing directories */ 286extern time_t metadelay; /* time to delay syncing metadata */ 287extern struct vm_zone *namei_zone; 288extern int prtactive; /* nonzero to call vprint() */ 289extern struct vattr va_null; /* predefined null vattr structure */ 290extern int vfs_ioopt; 291 292/* 293 * Macro/function to check for client cache inconsistency w.r.t. leasing. 294 */ 295#define LEASE_READ 0x1 /* Check lease for readers */ 296#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 297 298 299extern void (*lease_updatetime) __P((int deltat)); 300 301#define VSHOULDFREE(vp) \ 302 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 303 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 304 (!(vp)->v_object || \ 305 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 306 307#define VSHOULDBUSY(vp) \ 308 (((vp)->v_flag & VFREE) && \ 309 ((vp)->v_holdcnt || (vp)->v_usecount)) 310 311#endif /* _KERNEL */ 312 313 314/* 315 * Mods for extensibility. 316 */ 317 318/* 319 * Flags for vdesc_flags: 320 */ 321#define VDESC_MAX_VPS 16 322/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 323#define VDESC_VP0_WILLRELE 0x0001 324#define VDESC_VP1_WILLRELE 0x0002 325#define VDESC_VP2_WILLRELE 0x0004 326#define VDESC_VP3_WILLRELE 0x0008 327#define VDESC_NOMAP_VPP 0x0100 328#define VDESC_VPP_WILLRELE 0x0200 329 330/* 331 * VDESC_NO_OFFSET is used to identify the end of the offset list 332 * and in places where no such field exists. 333 */ 334#define VDESC_NO_OFFSET -1 335 336/* 337 * This structure describes the vnode operation taking place. 338 */ 339struct vnodeop_desc { 340 int vdesc_offset; /* offset in vector--first for speed */ 341 char *vdesc_name; /* a readable name for debugging */ 342 int vdesc_flags; /* VDESC_* flags */ 343 344 /* 345 * These ops are used by bypass routines to map and locate arguments. 346 * Creds and procs are not needed in bypass routines, but sometimes 347 * they are useful to (for example) transport layers. 348 * Nameidata is useful because it has a cred in it. 349 */ 350 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 351 int vdesc_vpp_offset; /* return vpp location */ 352 int vdesc_cred_offset; /* cred location, if any */ 353 int vdesc_proc_offset; /* proc location, if any */ 354 int vdesc_componentname_offset; /* if any */ 355 /* 356 * Finally, we've got a list of private data (about each operation) 357 * for each transport layer. (Support to manage this list is not 358 * yet part of BSD.) 359 */ 360 caddr_t *vdesc_transports; 361}; 362 363#ifdef _KERNEL 364/* 365 * A list of all the operation descs. 366 */ 367extern struct vnodeop_desc *vnodeop_descs[]; 368 369/* 370 * Interlock for scanning list of vnodes attached to a mountpoint 371 */ 372extern struct simplelock mntvnode_slock; 373 374/* 375 * This macro is very helpful in defining those offsets in the vdesc struct. 376 * 377 * This is stolen from X11R4. I ignored all the fancy stuff for 378 * Crays, so if you decide to port this to such a serious machine, 379 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 380 */ 381#define VOPARG_OFFSET(p_type,field) \ 382 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 383#define VOPARG_OFFSETOF(s_type,field) \ 384 VOPARG_OFFSET(s_type*,field) 385#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 386 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 387 388 389/* 390 * This structure is used to configure the new vnodeops vector. 391 */ 392struct vnodeopv_entry_desc { 393 struct vnodeop_desc *opve_op; /* which operation this is */ 394 vop_t *opve_impl; /* code implementing this operation */ 395}; 396struct vnodeopv_desc { 397 /* ptr to the ptr to the vector where op should go */ 398 vop_t ***opv_desc_vector_p; 399 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 400}; 401 402/* 403 * A generic structure. 404 * This can be used by bypass routines to identify generic arguments. 405 */ 406struct vop_generic_args { 407 struct vnodeop_desc *a_desc; 408 /* other random data follows, presumably */ 409}; 410 411 412#ifdef DEBUG_VFS_LOCKS 413/* 414 * Macros to aid in tracing VFS locking problems. Not totally 415 * reliable since if the process sleeps between changing the lock 416 * state and checking it with the assert, some other process could 417 * change the state. They are good enough for debugging a single 418 * filesystem using a single-threaded test. I find that 'cvs co src' 419 * is a pretty good test. 420 */ 421 422/* 423 * [dfr] Kludge until I get around to fixing all the vfs locking. 424 */ 425#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 426 || (vp)->v_tag == VT_MFS \ 427 || (vp)->v_tag == VT_NFS \ 428 || (vp)->v_tag == VT_LFS \ 429 || (vp)->v_tag == VT_ISOFS \ 430 || (vp)->v_tag == VT_MSDOSFS \ 431 || (vp)->v_tag == VT_DEVFS) 432 433#define ASSERT_VOP_LOCKED(vp, str) \ 434do { \ 435 struct vnode *_vp = (vp); \ 436 \ 437 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 438 panic("%s: %p is not locked but should be", str, _vp); \ 439} while (0) 440 441#define ASSERT_VOP_UNLOCKED(vp, str) \ 442do { \ 443 struct vnode *_vp = (vp); \ 444 int lockstate; \ 445 \ 446 if (_vp && IS_LOCKING_VFS(_vp)) { \ 447 lockstate = VOP_ISLOCKED(_vp, curproc); \ 448 if (lockstate == LK_EXCLUSIVE) \ 449 panic("%s: %p is locked but should not be", \ 450 str, _vp); \ 451 } \ 452} while (0) 453 454#define ASSERT_VOP_ELOCKED(vp, str) \ 455do { \ 456 struct vnode *_vp = (vp); \ 457 \ 458 if (_vp && IS_LOCKING_VFS(_vp) && \ 459 VOP_ISLOCKED(_vp, curproc) != LK_EXCLUSIVE) \ 460 panic("%s: %p is not exclusive locked but should be", \ 461 str, _vp); \ 462} while (0) 463 464#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 465do { \ 466 struct vnode *_vp = (vp); \ 467 \ 468 if (_vp && IS_LOCKING_VFS(_vp) && \ 469 VOP_ISLOCKED(_vp, curproc) != LK_EXCLOTHER) \ 470 panic("%s: %p is not exclusive locked by another proc", \ 471 str, _vp); \ 472} while (0) 473 474#define ASSERT_VOP_SLOCKED(vp, str) \ 475do { \ 476 struct vnode *_vp = (vp); \ 477 \ 478 if (_vp && IS_LOCKING_VFS(_vp) && \ 479 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 480 panic("%s: %p is not locked shared but should be", \ 481 str, _vp); \ 482} while (0) 483 484#else 485 486#define ASSERT_VOP_LOCKED(vp, str) 487#define ASSERT_VOP_UNLOCKED(vp, str) 488 489#endif 490 491/* 492 * VOCALL calls an op given an ops vector. We break it out because BSD's 493 * vclean changes the ops vector and then wants to call ops with the old 494 * vector. 495 */ 496#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 497 498/* 499 * This call works for vnodes in the kernel. 500 */ 501#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 502#define VDESC(OP) (& __CONCAT(OP,_desc)) 503#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 504 505/* 506 * VMIO support inline 507 */ 508 509extern int vmiodirenable; 510 511static __inline int 512vn_canvmio(struct vnode *vp) 513{ 514 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 515 return(TRUE); 516 return(FALSE); 517} 518 519/* 520 * Finally, include the default set of vnode operations. 521 */ 522#include "vnode_if.h" 523 524/* 525 * Public vnode manipulation functions. 526 */ 527struct componentname; 528struct file; 529struct mount; 530struct nameidata; 531struct ostat; 532struct proc; 533struct stat; 534struct nstat; 535struct ucred; 536struct uio; 537struct vattr; 538struct vnode; 539struct vop_bwrite_args; 540 541extern int (*lease_check_hook) __P((struct vop_lease_args *)); 542 543struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 544int bdevvp __P((dev_t dev, struct vnode **vpp)); 545/* cache_* may belong in namei.h. */ 546void cache_enter __P((struct vnode *dvp, struct vnode *vp, 547 struct componentname *cnp)); 548int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 549 struct componentname *cnp)); 550void cache_purge __P((struct vnode *vp)); 551void cache_purgevfs __P((struct mount *mp)); 552void cvtstat __P((struct stat *st, struct ostat *ost)); 553void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 554int getnewvnode __P((enum vtagtype tag, 555 struct mount *mp, vop_t **vops, struct vnode **vpp)); 556int lease_check __P((struct vop_lease_args *ap)); 557int spec_vnoperate __P((struct vop_generic_args *)); 558int speedup_syncer __P((void)); 559int textvp_fullpath __P((struct proc *p, char **retbuf, char **retfreebuf)); 560int vaccess __P((enum vtype type, mode_t file_mode, uid_t uid, gid_t gid, 561 mode_t acc_mode, struct ucred *cred, int *privused)); 562void vattr_null __P((struct vattr *vap)); 563int vcount __P((struct vnode *vp)); 564void vdrop __P((struct vnode *)); 565int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 566void vfs_add_vnodeops __P((const void *)); 567void vfs_rm_vnodeops __P((const void *)); 568int vflush __P((struct mount *mp, struct vnode *skipvp, int flags)); 569int vget __P((struct vnode *vp, int lockflag, struct proc *p)); 570void vgone __P((struct vnode *vp)); 571void vgonel __P((struct vnode *vp, struct proc *p)); 572void vhold __P((struct vnode *)); 573int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 574 575 struct proc *p, int slpflag, int slptimeo)); 576int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p, 577 off_t length, int blksize)); 578void vprint __P((char *label, struct vnode *vp)); 579int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 580 struct proc *p)); 581int vn_close __P((struct vnode *vp, 582 int flags, struct ucred *cred, struct proc *p)); 583void vn_finished_write __P((struct mount *mp)); 584int vn_isdisk __P((struct vnode *vp, int *errp)); 585int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 586#ifdef DEBUG_LOCKS 587int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p, 588 const char *filename, int line)); 589#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 590#endif 591int vn_open __P((struct nameidata *ndp, int *flagp, int cmode)); 592void vn_pollevent __P((struct vnode *vp, int events)); 593void vn_pollgone __P((struct vnode *vp)); 594int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events)); 595int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 596 int len, off_t offset, enum uio_seg segflg, int ioflg, 597 struct ucred *cred, int *aresid, struct proc *p)); 598int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 599int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags)); 600dev_t vn_todev __P((struct vnode *vp)); 601int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp, 602 int flags)); 603int vn_writechk __P((struct vnode *vp)); 604int vn_extattr_get __P((struct vnode *vp, int ioflg, const char *attrname, 605 int *buflen, char *buf, struct proc *p)); 606int vn_extattr_set __P((struct vnode *vp, int ioflg, const char *attrname, 607 int buflen, char *buf, struct proc *p)); 608int vn_extattr_rm(struct vnode *vp, int ioflg, const char *attrname, 609 struct proc *p); 610int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 611int vfs_object_create __P((struct vnode *vp, struct proc *p, 612 struct ucred *cred)); 613void vfs_timestamp __P((struct timespec *)); 614void vfs_write_resume __P((struct mount *mp)); 615void vfs_write_suspend __P((struct mount *mp)); 616int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 617int vop_stdgetwritemount __P((struct vop_getwritemount_args *)); 618int vop_stdinactive __P((struct vop_inactive_args *)); 619int vop_stdislocked __P((struct vop_islocked_args *)); 620int vop_stdlock __P((struct vop_lock_args *)); 621int vop_stdunlock __P((struct vop_unlock_args *)); 622int vop_noislocked __P((struct vop_islocked_args *)); 623int vop_nolock __P((struct vop_lock_args *)); 624int vop_nopoll __P((struct vop_poll_args *)); 625int vop_nounlock __P((struct vop_unlock_args *)); 626int vop_stdpathconf __P((struct vop_pathconf_args *)); 627int vop_stdpoll __P((struct vop_poll_args *)); 628int vop_revoke __P((struct vop_revoke_args *)); 629int vop_sharedlock __P((struct vop_lock_args *)); 630int vop_eopnotsupp __P((struct vop_generic_args *ap)); 631int vop_ebadf __P((struct vop_generic_args *ap)); 632int vop_einval __P((struct vop_generic_args *ap)); 633int vop_enotty __P((struct vop_generic_args *ap)); 634int vop_defaultop __P((struct vop_generic_args *ap)); 635int vop_null __P((struct vop_generic_args *ap)); 636int vop_panic __P((struct vop_generic_args *ap)); 637int vop_stdcreatevobject __P((struct vop_createvobject_args *ap)); 638int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap)); 639int vop_stdgetvobject __P((struct vop_getvobject_args *ap)); 640 641void vfree __P((struct vnode *)); 642void vput __P((struct vnode *vp)); 643void vrele __P((struct vnode *vp)); 644void vref __P((struct vnode *vp)); 645void vbusy __P((struct vnode *vp)); 646 647extern vop_t **default_vnodeop_p; 648extern vop_t **spec_vnodeop_p; 649extern vop_t **dead_vnodeop_p; 650 651#endif /* _KERNEL */ 652 653#endif /* !_SYS_VNODE_H_ */ 654