vnode.h revision 68885
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 68885 2000-11-18 23:06:26Z dillon $ 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/select.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 */ 216 217/* 218 * Modes. Some values same as Ixxx entries from inode.h for now. 219 */ 220#define VADMIN 010000 /* permission to administer vnode */ 221#define VSUID 004000 /* set user id on execution */ 222#define VSGID 002000 /* set group id on execution */ 223#define VSVTX 001000 /* save swapped text even after use */ 224#define VREAD 000400 /* read, write, execute permissions */ 225#define VWRITE 000200 226#define VEXEC 000100 227 228/* 229 * Token indicating no attribute value yet assigned. 230 */ 231#define VNOVAL (-1) 232 233#ifdef _KERNEL 234 235#ifdef MALLOC_DECLARE 236MALLOC_DECLARE(M_VNODE); 237#endif 238 239/* 240 * Convert between vnode types and inode formats (since POSIX.1 241 * defines mode word of stat structure in terms of inode formats). 242 */ 243extern enum vtype iftovt_tab[]; 244extern int vttoif_tab[]; 245#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 246#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 247#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 248 249/* 250 * Flags to various vnode functions. 251 */ 252#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 253#define FORCECLOSE 0x0002 /* vflush: force file closure */ 254#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 255#define DOCLOSE 0x0008 /* vclean: close active files */ 256#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 257#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 258#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ 259#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */ 260#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */ 261 262#define VREF(vp) vref(vp) 263 264 265#ifdef DIAGNOSTIC 266#define VATTR_NULL(vap) vattr_null(vap) 267#else 268#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 269#endif /* DIAGNOSTIC */ 270 271#define NULLVP ((struct vnode *)NULL) 272 273#define VNODEOP_SET(f) \ 274 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 275 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 276 277/* 278 * Global vnode data. 279 */ 280extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 281extern int desiredvnodes; /* number of vnodes desired */ 282extern time_t syncdelay; /* max time to delay syncing data */ 283extern time_t filedelay; /* time to delay syncing files */ 284extern time_t dirdelay; /* time to delay syncing directories */ 285extern time_t metadelay; /* time to delay syncing metadata */ 286extern struct vm_zone *namei_zone; 287extern int prtactive; /* nonzero to call vprint() */ 288extern struct vattr va_null; /* predefined null vattr structure */ 289extern int vfs_ioopt; 290 291/* 292 * Macro/function to check for client cache inconsistency w.r.t. leasing. 293 */ 294#define LEASE_READ 0x1 /* Check lease for readers */ 295#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 296 297 298extern void (*lease_updatetime) __P((int deltat)); 299 300#define VSHOULDFREE(vp) \ 301 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 302 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 303 (!(vp)->v_object || \ 304 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 305 306#define VSHOULDBUSY(vp) \ 307 (((vp)->v_flag & VFREE) && \ 308 ((vp)->v_holdcnt || (vp)->v_usecount)) 309 310#endif /* _KERNEL */ 311 312 313/* 314 * Mods for extensibility. 315 */ 316 317/* 318 * Flags for vdesc_flags: 319 */ 320#define VDESC_MAX_VPS 16 321/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 322#define VDESC_VP0_WILLRELE 0x0001 323#define VDESC_VP1_WILLRELE 0x0002 324#define VDESC_VP2_WILLRELE 0x0004 325#define VDESC_VP3_WILLRELE 0x0008 326#define VDESC_NOMAP_VPP 0x0100 327#define VDESC_VPP_WILLRELE 0x0200 328 329/* 330 * VDESC_NO_OFFSET is used to identify the end of the offset list 331 * and in places where no such field exists. 332 */ 333#define VDESC_NO_OFFSET -1 334 335/* 336 * This structure describes the vnode operation taking place. 337 */ 338struct vnodeop_desc { 339 int vdesc_offset; /* offset in vector--first for speed */ 340 char *vdesc_name; /* a readable name for debugging */ 341 int vdesc_flags; /* VDESC_* flags */ 342 343 /* 344 * These ops are used by bypass routines to map and locate arguments. 345 * Creds and procs are not needed in bypass routines, but sometimes 346 * they are useful to (for example) transport layers. 347 * Nameidata is useful because it has a cred in it. 348 */ 349 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 350 int vdesc_vpp_offset; /* return vpp location */ 351 int vdesc_cred_offset; /* cred location, if any */ 352 int vdesc_proc_offset; /* proc location, if any */ 353 int vdesc_componentname_offset; /* if any */ 354 /* 355 * Finally, we've got a list of private data (about each operation) 356 * for each transport layer. (Support to manage this list is not 357 * yet part of BSD.) 358 */ 359 caddr_t *vdesc_transports; 360}; 361 362#ifdef _KERNEL 363/* 364 * A list of all the operation descs. 365 */ 366extern struct vnodeop_desc *vnodeop_descs[]; 367 368/* 369 * Interlock for scanning list of vnodes attached to a mountpoint 370 */ 371extern struct simplelock mntvnode_slock; 372 373/* 374 * This macro is very helpful in defining those offsets in the vdesc struct. 375 * 376 * This is stolen from X11R4. I ignored all the fancy stuff for 377 * Crays, so if you decide to port this to such a serious machine, 378 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 379 */ 380#define VOPARG_OFFSET(p_type,field) \ 381 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 382#define VOPARG_OFFSETOF(s_type,field) \ 383 VOPARG_OFFSET(s_type*,field) 384#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 385 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 386 387 388/* 389 * This structure is used to configure the new vnodeops vector. 390 */ 391struct vnodeopv_entry_desc { 392 struct vnodeop_desc *opve_op; /* which operation this is */ 393 vop_t *opve_impl; /* code implementing this operation */ 394}; 395struct vnodeopv_desc { 396 /* ptr to the ptr to the vector where op should go */ 397 vop_t ***opv_desc_vector_p; 398 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 399}; 400 401/* 402 * A generic structure. 403 * This can be used by bypass routines to identify generic arguments. 404 */ 405struct vop_generic_args { 406 struct vnodeop_desc *a_desc; 407 /* other random data follows, presumably */ 408}; 409 410 411#ifdef DEBUG_VFS_LOCKS 412/* 413 * Macros to aid in tracing VFS locking problems. Not totally 414 * reliable since if the process sleeps between changing the lock 415 * state and checking it with the assert, some other process could 416 * change the state. They are good enough for debugging a single 417 * filesystem using a single-threaded test. I find that 'cvs co src' 418 * is a pretty good test. 419 */ 420 421/* 422 * [dfr] Kludge until I get around to fixing all the vfs locking. 423 */ 424#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 425 || (vp)->v_tag == VT_MFS \ 426 || (vp)->v_tag == VT_NFS \ 427 || (vp)->v_tag == VT_LFS \ 428 || (vp)->v_tag == VT_ISOFS \ 429 || (vp)->v_tag == VT_MSDOSFS \ 430 || (vp)->v_tag == VT_DEVFS) 431 432#define ASSERT_VOP_LOCKED(vp, str) \ 433do { \ 434 struct vnode *_vp = (vp); \ 435 \ 436 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 437 panic("%s: %p is not locked but should be", str, _vp); \ 438} while (0) 439 440#define ASSERT_VOP_UNLOCKED(vp, str) \ 441do { \ 442 struct vnode *_vp = (vp); \ 443 int lockstate; \ 444 \ 445 if (_vp && IS_LOCKING_VFS(_vp)) { \ 446 lockstate = VOP_ISLOCKED(_vp, curproc); \ 447 if (lockstate == LK_EXCLUSIVE) \ 448 panic("%s: %p is locked but should not be", \ 449 str, _vp); \ 450 } \ 451} while (0) 452 453#define ASSERT_VOP_ELOCKED(vp, str) \ 454do { \ 455 struct vnode *_vp = (vp); \ 456 \ 457 if (_vp && IS_LOCKING_VFS(_vp) && \ 458 VOP_ISLOCKED(_vp, curproc) != LK_EXCLUSIVE) \ 459 panic("%s: %p is not exclusive locked but should be", \ 460 str, _vp); \ 461} while (0) 462 463#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 464do { \ 465 struct vnode *_vp = (vp); \ 466 \ 467 if (_vp && IS_LOCKING_VFS(_vp) && \ 468 VOP_ISLOCKED(_vp, curproc) != LK_EXCLOTHER) \ 469 panic("%s: %p is not exclusive locked by another proc", \ 470 str, _vp); \ 471} while (0) 472 473#define ASSERT_VOP_SLOCKED(vp, str) \ 474do { \ 475 struct vnode *_vp = (vp); \ 476 \ 477 if (_vp && IS_LOCKING_VFS(_vp) && \ 478 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 479 panic("%s: %p is not locked shared but should be", \ 480 str, _vp); \ 481} while (0) 482 483#else 484 485#define ASSERT_VOP_LOCKED(vp, str) 486#define ASSERT_VOP_UNLOCKED(vp, str) 487 488#endif 489 490/* 491 * VOCALL calls an op given an ops vector. We break it out because BSD's 492 * vclean changes the ops vector and then wants to call ops with the old 493 * vector. 494 */ 495#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 496 497/* 498 * This call works for vnodes in the kernel. 499 */ 500#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 501#define VDESC(OP) (& __CONCAT(OP,_desc)) 502#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 503 504/* 505 * VMIO support inline 506 */ 507 508extern int vmiodirenable; 509 510static __inline int 511vn_canvmio(struct vnode *vp) 512{ 513 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 514 return(TRUE); 515 return(FALSE); 516} 517 518/* 519 * Finally, include the default set of vnode operations. 520 */ 521#include "vnode_if.h" 522 523/* 524 * Public vnode manipulation functions. 525 */ 526struct componentname; 527struct file; 528struct mount; 529struct nameidata; 530struct ostat; 531struct proc; 532struct stat; 533struct nstat; 534struct ucred; 535struct uio; 536struct vattr; 537struct vnode; 538struct vop_bwrite_args; 539 540extern int (*lease_check_hook) __P((struct vop_lease_args *)); 541 542struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 543int bdevvp __P((dev_t dev, struct vnode **vpp)); 544/* cache_* may belong in namei.h. */ 545void cache_enter __P((struct vnode *dvp, struct vnode *vp, 546 struct componentname *cnp)); 547int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 548 struct componentname *cnp)); 549void cache_purge __P((struct vnode *vp)); 550void cache_purgevfs __P((struct mount *mp)); 551void cvtstat __P((struct stat *st, struct ostat *ost)); 552void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 553int getnewvnode __P((enum vtagtype tag, 554 struct mount *mp, vop_t **vops, struct vnode **vpp)); 555int lease_check __P((struct vop_lease_args *ap)); 556int spec_vnoperate __P((struct vop_generic_args *)); 557int speedup_syncer __P((void)); 558int textvp_fullpath __P((struct proc *p, char **retbuf, char **retfreebuf)); 559int vaccess __P((enum vtype type, mode_t file_mode, uid_t uid, gid_t gid, 560 mode_t acc_mode, struct ucred *cred, int *privused)); 561void vattr_null __P((struct vattr *vap)); 562int vcount __P((struct vnode *vp)); 563void vdrop __P((struct vnode *)); 564int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 565void vfs_add_vnodeops __P((const void *)); 566void vfs_rm_vnodeops __P((const void *)); 567int vflush __P((struct mount *mp, struct vnode *skipvp, int flags)); 568int vget __P((struct vnode *vp, int lockflag, struct proc *p)); 569void vgone __P((struct vnode *vp)); 570void vgonel __P((struct vnode *vp, struct proc *p)); 571void vhold __P((struct vnode *)); 572int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 573 574 struct proc *p, int slpflag, int slptimeo)); 575int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p, 576 off_t length, int blksize)); 577void vprint __P((char *label, struct vnode *vp)); 578int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 579 struct proc *p)); 580int vn_close __P((struct vnode *vp, 581 int flags, struct ucred *cred, struct proc *p)); 582void vn_finished_write __P((struct mount *mp)); 583int vn_isdisk __P((struct vnode *vp, int *errp)); 584int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 585#ifdef DEBUG_LOCKS 586int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p, 587 const char *filename, int line)); 588#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 589#endif 590int vn_open __P((struct nameidata *ndp, int *flagp, int cmode)); 591void vn_pollevent __P((struct vnode *vp, int events)); 592void vn_pollgone __P((struct vnode *vp)); 593int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events)); 594int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 595 int len, off_t offset, enum uio_seg segflg, int ioflg, 596 struct ucred *cred, int *aresid, struct proc *p)); 597int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 598int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags)); 599dev_t vn_todev __P((struct vnode *vp)); 600int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp, 601 int flags)); 602int vn_writechk __P((struct vnode *vp)); 603int vn_extattr_get __P((struct vnode *vp, int ioflg, const char *attrname, 604 int *buflen, char *buf, struct proc *p)); 605int vn_extattr_set __P((struct vnode *vp, int ioflg, const char *attrname, 606 int buflen, char *buf, struct proc *p)); 607int vn_extattr_rm(struct vnode *vp, int ioflg, const char *attrname, 608 struct proc *p); 609int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 610int vfs_object_create __P((struct vnode *vp, struct proc *p, 611 struct ucred *cred)); 612void vfs_timestamp __P((struct timespec *)); 613void vfs_write_resume __P((struct mount *mp)); 614void vfs_write_suspend __P((struct mount *mp)); 615int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 616int vop_stdgetwritemount __P((struct vop_getwritemount_args *)); 617int vop_stdinactive __P((struct vop_inactive_args *)); 618int vop_stdislocked __P((struct vop_islocked_args *)); 619int vop_stdlock __P((struct vop_lock_args *)); 620int vop_stdunlock __P((struct vop_unlock_args *)); 621int vop_noislocked __P((struct vop_islocked_args *)); 622int vop_nolock __P((struct vop_lock_args *)); 623int vop_nopoll __P((struct vop_poll_args *)); 624int vop_nounlock __P((struct vop_unlock_args *)); 625int vop_stdpathconf __P((struct vop_pathconf_args *)); 626int vop_stdpoll __P((struct vop_poll_args *)); 627int vop_revoke __P((struct vop_revoke_args *)); 628int vop_sharedlock __P((struct vop_lock_args *)); 629int vop_eopnotsupp __P((struct vop_generic_args *ap)); 630int vop_ebadf __P((struct vop_generic_args *ap)); 631int vop_einval __P((struct vop_generic_args *ap)); 632int vop_enotty __P((struct vop_generic_args *ap)); 633int vop_defaultop __P((struct vop_generic_args *ap)); 634int vop_null __P((struct vop_generic_args *ap)); 635int vop_panic __P((struct vop_generic_args *ap)); 636int vop_stdcreatevobject __P((struct vop_createvobject_args *ap)); 637int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap)); 638int vop_stdgetvobject __P((struct vop_getvobject_args *ap)); 639 640void vfree __P((struct vnode *)); 641void vput __P((struct vnode *vp)); 642void vrele __P((struct vnode *vp)); 643void vref __P((struct vnode *vp)); 644void vbusy __P((struct vnode *vp)); 645 646extern vop_t **default_vnodeop_p; 647extern vop_t **spec_vnodeop_p; 648extern vop_t **dead_vnodeop_p; 649 650#endif /* _KERNEL */ 651 652#endif /* !_SYS_VNODE_H_ */ 653