vnode.h revision 64819
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 64819 2000-08-18 10:01:02Z phk $ 35 */ 36 37#ifndef _SYS_VNODE_H_ 38#define _SYS_VNODE_H_ 39 40#include <sys/queue.h> 41#include <sys/select.h> 42#include <sys/uio.h> 43#include <sys/acl.h> 44 45#include <machine/lock.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 simple lock. 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 simplelock v_interlock; /* lock on usecount and flag */ 118 struct lock *v_vnlock; /* used for non-locking fs's */ 119 enum vtagtype v_tag; /* type of underlying data */ 120 void *v_data; /* private data for fs */ 121 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 122 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 123 struct vnode *v_dd; /* .. vnode */ 124 u_long v_ddid; /* .. capability identifier */ 125 struct { 126 struct simplelock vpi_lock; /* lock to protect below */ 127 struct selinfo vpi_selinfo; /* identity of poller(s) */ 128 short vpi_events; /* what they are looking for */ 129 short vpi_revents; /* what has happened */ 130 } v_pollinfo; 131#ifdef DEBUG_LOCKS 132 const char *filename; /* Source file doing locking */ 133 int line; /* Line number doing locking */ 134#endif 135}; 136#define v_mountedhere v_un.vu_mountedhere 137#define v_socket v_un.vu_socket 138#define v_rdev v_un.vu_spec.vu_specinfo 139#define v_specnext v_un.vu_spec.vu_specnext 140#define v_fifoinfo v_un.vu_fifoinfo 141 142#define VN_POLLEVENT(vp, events) \ 143 do { \ 144 if ((vp)->v_pollinfo.vpi_events & (events)) \ 145 vn_pollevent((vp), (events)); \ 146 } while (0) 147 148/* 149 * Vnode flags. 150 */ 151#define VROOT 0x00001 /* root of its file system */ 152#define VTEXT 0x00002 /* vnode is a pure text prototype */ 153#define VSYSTEM 0x00004 /* vnode being used by kernel */ 154#define VISTTY 0x00008 /* vnode represents a tty */ 155#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 156#define VXWANT 0x00200 /* process is waiting for vnode */ 157#define VBWAIT 0x00400 /* waiting for output to complete */ 158/* open for business 0x00800 */ 159/* open for business 0x01000 */ 160#define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 161#define VCOPYONWRITE 0x04000 /* vnode is doing copy-on-write */ 162#define VAGE 0x08000 /* Insert vnode at head of free list */ 163#define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 164#define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 165#define VDOOMED 0x40000 /* This vnode is being recycled */ 166#define VFREE 0x80000 /* This vnode is on the freelist */ 167/* open for business 0x100000 */ 168#define VONWORKLST 0x200000 /* On syncer work-list */ 169#define VMOUNT 0x400000 /* Mount in progress */ 170 171/* 172 * Vnode attributes. A field value of VNOVAL represents a field whose value 173 * is unavailable (getattr) or which is not to be changed (setattr). 174 */ 175struct vattr { 176 enum vtype va_type; /* vnode type (for create) */ 177 u_short va_mode; /* files access mode and type */ 178 short va_nlink; /* number of references to file */ 179 uid_t va_uid; /* owner user id */ 180 gid_t va_gid; /* owner group id */ 181 udev_t va_fsid; /* file system id */ 182 long va_fileid; /* file id */ 183 u_quad_t va_size; /* file size in bytes */ 184 long va_blocksize; /* blocksize preferred for i/o */ 185 struct timespec va_atime; /* time of last access */ 186 struct timespec va_mtime; /* time of last modification */ 187 struct timespec va_ctime; /* time file changed */ 188 u_long va_gen; /* generation number of file */ 189 u_long va_flags; /* flags defined for file */ 190 udev_t va_rdev; /* device the special file represents */ 191 u_quad_t va_bytes; /* bytes of disk space held by file */ 192 u_quad_t va_filerev; /* file modification number */ 193 u_int va_vaflags; /* operations flags, see below */ 194 long va_spare; /* remain quad aligned */ 195}; 196 197/* 198 * Flags for va_vaflags. 199 */ 200#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 201#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 202 203/* 204 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 205 * help with write clustering) 206 */ 207#define IO_UNIT 0x01 /* do I/O as atomic unit */ 208#define IO_APPEND 0x02 /* append write to end */ 209#define IO_SYNC 0x04 /* do I/O synchronously */ 210#define IO_NODELOCKED 0x08 /* underlying node already locked */ 211#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 212#define IO_VMIO 0x20 /* data already in VMIO space */ 213#define IO_INVAL 0x40 /* invalidate after I/O */ 214 215/* 216 * Modes. Some values same as Ixxx entries from inode.h for now. 217 */ 218#define VSUID 04000 /* set user id on execution */ 219#define VSGID 02000 /* set group id on execution */ 220#define VSVTX 01000 /* save swapped text even after use */ 221#define VREAD 00400 /* read, write, execute permissions */ 222#define VWRITE 00200 223#define VEXEC 00100 224 225/* 226 * Token indicating no attribute value yet assigned. 227 */ 228#define VNOVAL (-1) 229 230#ifdef _KERNEL 231 232#ifdef MALLOC_DECLARE 233MALLOC_DECLARE(M_VNODE); 234#endif 235 236/* 237 * Convert between vnode types and inode formats (since POSIX.1 238 * defines mode word of stat structure in terms of inode formats). 239 */ 240extern enum vtype iftovt_tab[]; 241extern int vttoif_tab[]; 242#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 243#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 244#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 245 246/* 247 * Flags to various vnode functions. 248 */ 249#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 250#define FORCECLOSE 0x0002 /* vflush: force file closure */ 251#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 252#define DOCLOSE 0x0008 /* vclean: close active files */ 253#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 254#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 255#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ 256#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */ 257#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */ 258 259#define VREF(vp) vref(vp) 260 261 262#ifdef DIAGNOSTIC 263#define VATTR_NULL(vap) vattr_null(vap) 264#else 265#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 266#endif /* DIAGNOSTIC */ 267 268#define NULLVP ((struct vnode *)NULL) 269 270#define VNODEOP_SET(f) \ 271 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 272 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 273 274/* 275 * Global vnode data. 276 */ 277extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 278extern int desiredvnodes; /* number of vnodes desired */ 279extern time_t syncdelay; /* max time to delay syncing data */ 280extern time_t filedelay; /* time to delay syncing files */ 281extern time_t dirdelay; /* time to delay syncing directories */ 282extern time_t metadelay; /* time to delay syncing metadata */ 283extern struct vm_zone *namei_zone; 284extern int prtactive; /* nonzero to call vprint() */ 285extern struct vattr va_null; /* predefined null vattr structure */ 286extern int vfs_ioopt; 287 288/* 289 * Macro/function to check for client cache inconsistency w.r.t. leasing. 290 */ 291#define LEASE_READ 0x1 /* Check lease for readers */ 292#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 293 294 295extern void (*lease_updatetime) __P((int deltat)); 296 297#define VSHOULDFREE(vp) \ 298 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 299 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 300 (!(vp)->v_object || \ 301 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 302 303#define VSHOULDBUSY(vp) \ 304 (((vp)->v_flag & VFREE) && \ 305 ((vp)->v_holdcnt || (vp)->v_usecount)) 306 307#endif /* _KERNEL */ 308 309 310/* 311 * Mods for extensibility. 312 */ 313 314/* 315 * Flags for vdesc_flags: 316 */ 317#define VDESC_MAX_VPS 16 318/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 319#define VDESC_VP0_WILLRELE 0x0001 320#define VDESC_VP1_WILLRELE 0x0002 321#define VDESC_VP2_WILLRELE 0x0004 322#define VDESC_VP3_WILLRELE 0x0008 323#define VDESC_NOMAP_VPP 0x0100 324#define VDESC_VPP_WILLRELE 0x0200 325 326/* 327 * VDESC_NO_OFFSET is used to identify the end of the offset list 328 * and in places where no such field exists. 329 */ 330#define VDESC_NO_OFFSET -1 331 332/* 333 * This structure describes the vnode operation taking place. 334 */ 335struct vnodeop_desc { 336 int vdesc_offset; /* offset in vector--first for speed */ 337 char *vdesc_name; /* a readable name for debugging */ 338 int vdesc_flags; /* VDESC_* flags */ 339 340 /* 341 * These ops are used by bypass routines to map and locate arguments. 342 * Creds and procs are not needed in bypass routines, but sometimes 343 * they are useful to (for example) transport layers. 344 * Nameidata is useful because it has a cred in it. 345 */ 346 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 347 int vdesc_vpp_offset; /* return vpp location */ 348 int vdesc_cred_offset; /* cred location, if any */ 349 int vdesc_proc_offset; /* proc location, if any */ 350 int vdesc_componentname_offset; /* if any */ 351 /* 352 * Finally, we've got a list of private data (about each operation) 353 * for each transport layer. (Support to manage this list is not 354 * yet part of BSD.) 355 */ 356 caddr_t *vdesc_transports; 357}; 358 359#ifdef _KERNEL 360/* 361 * A list of all the operation descs. 362 */ 363extern struct vnodeop_desc *vnodeop_descs[]; 364 365/* 366 * Interlock for scanning list of vnodes attached to a mountpoint 367 */ 368extern struct simplelock mntvnode_slock; 369 370/* 371 * This macro is very helpful in defining those offsets in the vdesc struct. 372 * 373 * This is stolen from X11R4. I ignored all the fancy stuff for 374 * Crays, so if you decide to port this to such a serious machine, 375 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 376 */ 377#define VOPARG_OFFSET(p_type,field) \ 378 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 379#define VOPARG_OFFSETOF(s_type,field) \ 380 VOPARG_OFFSET(s_type*,field) 381#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 382 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 383 384 385/* 386 * This structure is used to configure the new vnodeops vector. 387 */ 388struct vnodeopv_entry_desc { 389 struct vnodeop_desc *opve_op; /* which operation this is */ 390 vop_t *opve_impl; /* code implementing this operation */ 391}; 392struct vnodeopv_desc { 393 /* ptr to the ptr to the vector where op should go */ 394 vop_t ***opv_desc_vector_p; 395 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 396}; 397 398/* 399 * A generic structure. 400 * This can be used by bypass routines to identify generic arguments. 401 */ 402struct vop_generic_args { 403 struct vnodeop_desc *a_desc; 404 /* other random data follows, presumably */ 405}; 406 407 408#ifdef DEBUG_VFS_LOCKS 409/* 410 * Macros to aid in tracing VFS locking problems. Not totally 411 * reliable since if the process sleeps between changing the lock 412 * state and checking it with the assert, some other process could 413 * change the state. They are good enough for debugging a single 414 * filesystem using a single-threaded test. I find that 'cvs co src' 415 * is a pretty good test. 416 */ 417 418/* 419 * [dfr] Kludge until I get around to fixing all the vfs locking. 420 */ 421#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 422 || (vp)->v_tag == VT_MFS \ 423 || (vp)->v_tag == VT_NFS \ 424 || (vp)->v_tag == VT_LFS \ 425 || (vp)->v_tag == VT_ISOFS \ 426 || (vp)->v_tag == VT_MSDOSFS \ 427 || (vp)->v_tag == VT_DEVFS) 428 429#define ASSERT_VOP_LOCKED(vp, str) \ 430do { \ 431 struct vnode *_vp = (vp); \ 432 \ 433 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 434 panic("%s: %p is not locked but should be", str, _vp); \ 435} while (0) 436 437#define ASSERT_VOP_UNLOCKED(vp, str) \ 438do { \ 439 struct vnode *_vp = (vp); \ 440 int lockstate; \ 441 \ 442 if (_vp && IS_LOCKING_VFS(_vp)) { \ 443 lockstate = VOP_ISLOCKED(_vp, curproc); \ 444 if (lockstate == LK_EXCLUSIVE) \ 445 panic("%s: %p is locked but should not be", \ 446 str, _vp); \ 447 } \ 448} while (0) 449 450#define ASSERT_VOP_ELOCKED(vp, str) \ 451do { \ 452 struct vnode *_vp = (vp); \ 453 \ 454 if (_vp && IS_LOCKING_VFS(_vp) && \ 455 VOP_ISLOCKED(_vp, curproc) != LK_EXCLUSIVE) \ 456 panic("%s: %p is not exclusive locked but should be", \ 457 str, _vp); \ 458} while (0) 459 460#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 461do { \ 462 struct vnode *_vp = (vp); \ 463 \ 464 if (_vp && IS_LOCKING_VFS(_vp) && \ 465 VOP_ISLOCKED(_vp, curproc) != LK_EXCLOTHER) \ 466 panic("%s: %p is not exclusive locked by another proc", \ 467 str, _vp); \ 468} while (0) 469 470#define ASSERT_VOP_SLOCKED(vp, str) \ 471do { \ 472 struct vnode *_vp = (vp); \ 473 \ 474 if (_vp && IS_LOCKING_VFS(_vp) && \ 475 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 476 panic("%s: %p is not locked shared but should be", \ 477 str, _vp); \ 478} while (0) 479 480#else 481 482#define ASSERT_VOP_LOCKED(vp, str) 483#define ASSERT_VOP_UNLOCKED(vp, str) 484 485#endif 486 487/* 488 * VOCALL calls an op given an ops vector. We break it out because BSD's 489 * vclean changes the ops vector and then wants to call ops with the old 490 * vector. 491 */ 492#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 493 494/* 495 * This call works for vnodes in the kernel. 496 */ 497#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 498#define VDESC(OP) (& __CONCAT(OP,_desc)) 499#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 500 501/* 502 * VMIO support inline 503 */ 504 505extern int vmiodirenable; 506 507static __inline int 508vn_canvmio(struct vnode *vp) 509{ 510 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 511 return(TRUE); 512 return(FALSE); 513} 514 515/* 516 * Finally, include the default set of vnode operations. 517 */ 518#include "vnode_if.h" 519 520/* 521 * Public vnode manipulation functions. 522 */ 523struct componentname; 524struct file; 525struct mount; 526struct nameidata; 527struct ostat; 528struct proc; 529struct stat; 530struct nstat; 531struct ucred; 532struct uio; 533struct vattr; 534struct vnode; 535struct vop_bwrite_args; 536 537extern int (*lease_check_hook) __P((struct vop_lease_args *)); 538 539void addalias __P((struct vnode *vp, dev_t nvp_rdev)); 540struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 541int bdevvp __P((dev_t dev, struct vnode **vpp)); 542/* cache_* may belong in namei.h. */ 543void cache_enter __P((struct vnode *dvp, struct vnode *vp, 544 struct componentname *cnp)); 545int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 546 struct componentname *cnp)); 547void cache_purge __P((struct vnode *vp)); 548void cache_purgevfs __P((struct mount *mp)); 549void cvtstat __P((struct stat *st, struct ostat *ost)); 550void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 551int getnewvnode __P((enum vtagtype tag, 552 struct mount *mp, vop_t **vops, struct vnode **vpp)); 553int lease_check __P((struct vop_lease_args *ap)); 554int spec_vnoperate __P((struct vop_generic_args *)); 555int speedup_syncer __P((void)); 556int textvp_fullpath __P((struct proc *p, char **retbuf, char **retfreebuf)); 557void vattr_null __P((struct vattr *vap)); 558int vcount __P((struct vnode *vp)); 559void vdrop __P((struct vnode *)); 560int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 561void vfs_add_vnodeops __P((const void *)); 562void vfs_rm_vnodeops __P((const void *)); 563int vflush __P((struct mount *mp, struct vnode *skipvp, int flags)); 564int vget __P((struct vnode *vp, int lockflag, struct proc *p)); 565void vgone __P((struct vnode *vp)); 566void vgonel __P((struct vnode *vp, struct proc *p)); 567void vhold __P((struct vnode *)); 568int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 569 570 struct proc *p, int slpflag, int slptimeo)); 571int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p, 572 off_t length, int blksize)); 573void vprint __P((char *label, struct vnode *vp)); 574int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 575 struct proc *p)); 576int vn_close __P((struct vnode *vp, 577 int flags, struct ucred *cred, struct proc *p)); 578void vn_finished_write __P((struct mount *mp)); 579int vn_isdisk __P((struct vnode *vp, int *errp)); 580int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 581#ifdef DEBUG_LOCKS 582int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p, 583 const char *filename, int line)); 584#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 585#endif 586int vn_open __P((struct nameidata *ndp, int *flagp, int cmode)); 587void vn_pollevent __P((struct vnode *vp, int events)); 588void vn_pollgone __P((struct vnode *vp)); 589int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events)); 590int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 591 int len, off_t offset, enum uio_seg segflg, int ioflg, 592 struct ucred *cred, int *aresid, struct proc *p)); 593int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 594int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags)); 595dev_t vn_todev __P((struct vnode *vp)); 596int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp, 597 int flags)); 598int vn_writechk __P((struct vnode *vp)); 599int vn_extattr_get __P((struct vnode *vp, int ioflg, const char *attrname, 600 int *buflen, char *buf, struct proc *p)); 601int vn_extattr_set __P((struct vnode *vp, int ioflg, const char *attrname, 602 int buflen, char *buf, struct proc *p)); 603int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 604int vfs_object_create __P((struct vnode *vp, struct proc *p, 605 struct ucred *cred)); 606void vfs_timestamp __P((struct timespec *)); 607void vfs_write_resume __P((struct mount *mp)); 608void vfs_write_suspend __P((struct mount *mp)); 609int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 610int vop_stdgetwritemount __P((struct vop_getwritemount_args *)); 611int vop_stdinactive __P((struct vop_inactive_args *)); 612int vop_stdislocked __P((struct vop_islocked_args *)); 613int vop_stdlock __P((struct vop_lock_args *)); 614int vop_stdunlock __P((struct vop_unlock_args *)); 615int vop_noislocked __P((struct vop_islocked_args *)); 616int vop_nolock __P((struct vop_lock_args *)); 617int vop_nopoll __P((struct vop_poll_args *)); 618int vop_nounlock __P((struct vop_unlock_args *)); 619int vop_stdpathconf __P((struct vop_pathconf_args *)); 620int vop_stdpoll __P((struct vop_poll_args *)); 621int vop_revoke __P((struct vop_revoke_args *)); 622int vop_sharedlock __P((struct vop_lock_args *)); 623int vop_eopnotsupp __P((struct vop_generic_args *ap)); 624int vop_ebadf __P((struct vop_generic_args *ap)); 625int vop_einval __P((struct vop_generic_args *ap)); 626int vop_enotty __P((struct vop_generic_args *ap)); 627int vop_defaultop __P((struct vop_generic_args *ap)); 628int vop_null __P((struct vop_generic_args *ap)); 629int vop_panic __P((struct vop_generic_args *ap)); 630 631void vfree __P((struct vnode *)); 632void vput __P((struct vnode *vp)); 633void vrele __P((struct vnode *vp)); 634void vref __P((struct vnode *vp)); 635void vbusy __P((struct vnode *vp)); 636 637extern vop_t **default_vnodeop_p; 638extern vop_t **spec_vnodeop_p; 639 640#endif /* _KERNEL */ 641 642#endif /* !_SYS_VNODE_H_ */ 643