vnode.h revision 54372
1204552Salfred/* 2204552Salfred * Copyright (c) 1989, 1993 3204552Salfred * The Regents of the University of California. All rights reserved. 4204552Salfred * 5204552Salfred * Redistribution and use in source and binary forms, with or without 6204552Salfred * modification, are permitted provided that the following conditions 7204552Salfred * are met: 8204552Salfred * 1. Redistributions of source code must retain the above copyright 9204552Salfred * notice, this list of conditions and the following disclaimer. 10204552Salfred * 2. Redistributions in binary form must reproduce the above copyright 11204552Salfred * notice, this list of conditions and the following disclaimer in the 12204552Salfred * documentation and/or other materials provided with the distribution. 13204552Salfred * 3. All advertising materials mentioning features or use of this software 14204552Salfred * must display the following acknowledgement: 15204552Salfred * This product includes software developed by the University of 16204552Salfred * California, Berkeley and its contributors. 17204552Salfred * 4. Neither the name of the University nor the names of its contributors 18204552Salfred * may be used to endorse or promote products derived from this software 19204552Salfred * without specific prior written permission. 20204552Salfred * 21204552Salfred * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22204552Salfred * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23204552Salfred * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24204552Salfred * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25204552Salfred * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26204552Salfred * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27204552Salfred * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28204552Salfred * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29204552Salfred * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30204552Salfred * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31204552Salfred * SUCH DAMAGE. 32204552Salfred * 33204552Salfred * @(#)vnode.h 8.7 (Berkeley) 2/4/94 34204552Salfred * $FreeBSD: head/sys/sys/vnode.h 54372 1999-12-09 19:10:36Z semenu $ 35204552Salfred */ 36204552Salfred 37204552Salfred#ifndef _SYS_VNODE_H_ 38204552Salfred#define _SYS_VNODE_H_ 39204552Salfred 40204552Salfred#include <sys/queue.h> 41204552Salfred#include <sys/select.h> 42204552Salfred#include <sys/uio.h> 43204552Salfred 44204552Salfred#include <machine/lock.h> 45204552Salfred 46204552Salfred/* 47204552Salfred * The vnode is the focus of all file activity in UNIX. There is a 48204552Salfred * unique vnode allocated for each active file, each current directory, 49204552Salfred * each mounted-on file, text file, and the root. 50204552Salfred */ 51204552Salfred 52204552Salfred/* 53204552Salfred * Vnode types. VNON means no type. 54204552Salfred */ 55204552Salfredenum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 56204552Salfred 57204552Salfred/* 58204552Salfred * Vnode tag types. 59204552Salfred * These are for the benefit of external programs only (e.g., pstat) 60204552Salfred * and should NEVER be inspected by the kernel. 61204552Salfred */ 62204552Salfredenum vtagtype { 63204552Salfred VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 64204552Salfred VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 65204552Salfred VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 66204552Salfred VT_HPFS 67204552Salfred}; 68204552Salfred 69204552Salfred/* 70204552Salfred * Each underlying filesystem allocates its own private area and hangs 71204552Salfred * it from v_data. If non-null, this area is freed in getnewvnode(). 72204552Salfred */ 73204552SalfredTAILQ_HEAD(buflists, buf); 74204552Salfred 75204552Salfredtypedef int vop_t __P((void *)); 76204552Salfredstruct namecache; 77204552Salfred 78204552Salfred/* 79204552Salfred * Reading or writing any of these items requires holding the appropriate lock. 80204552Salfred * v_freelist is locked by the global vnode_free_list simple lock. 81204552Salfred * v_mntvnodes is locked by the global mntvnodes simple lock. 82204552Salfred * v_flag, v_usecount, v_holdcount and v_writecount are 83204552Salfred * locked by the v_interlock simple lock. 84204552Salfred * v_pollinfo is locked by the lock contained inside it. 85204552Salfred */ 86204552Salfredstruct vnode { 87204552Salfred u_long v_flag; /* vnode flags (see below) */ 88204552Salfred int v_usecount; /* reference count of users */ 89204552Salfred int v_writecount; /* reference count of writers */ 90204552Salfred int v_holdcnt; /* page & buffer references */ 91204552Salfred u_long v_id; /* capability identifier */ 92204552Salfred struct mount *v_mount; /* ptr to vfs we are in */ 93204552Salfred vop_t **v_op; /* vnode operations vector */ 94204552Salfred TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 95204552Salfred LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ 96204552Salfred struct buflists v_cleanblkhd; /* clean blocklist head */ 97204552Salfred struct buflists v_dirtyblkhd; /* dirty blocklist head */ 98204552Salfred LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 99204552Salfred long v_numoutput; /* num of writes in progress */ 100204552Salfred enum vtype v_type; /* vnode type */ 101204552Salfred union { 102204552Salfred struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 103204552Salfred struct socket *vu_socket; /* unix ipc (VSOCK) */ 104204552Salfred struct { 105204552Salfred struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 106204552Salfred SLIST_ENTRY(vnode) vu_specnext; 107204552Salfred } vu_spec; 108204552Salfred struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 109204552Salfred } v_un; 110204552Salfred struct nqlease *v_lease; /* Soft reference to lease */ 111204552Salfred daddr_t v_lastw; /* last write (write cluster) */ 112204552Salfred daddr_t v_cstart; /* start block of cluster */ 113204552Salfred daddr_t v_lasta; /* last allocation */ 114204552Salfred int v_clen; /* length of current cluster */ 115204552Salfred struct vm_object *v_object; /* Place to store VM object */ 116204552Salfred struct simplelock v_interlock; /* lock on usecount and flag */ 117204552Salfred struct lock *v_vnlock; /* used for non-locking fs's */ 118204552Salfred enum vtagtype v_tag; /* type of underlying data */ 119204552Salfred void *v_data; /* private data for fs */ 120204552Salfred LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 121204552Salfred TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 122204552Salfred struct vnode *v_dd; /* .. vnode */ 123204552Salfred u_long v_ddid; /* .. capability identifier */ 124204552Salfred struct { 125204552Salfred struct simplelock vpi_lock; /* lock to protect below */ 126204552Salfred struct selinfo vpi_selinfo; /* identity of poller(s) */ 127204552Salfred short vpi_events; /* what they are looking for */ 128204552Salfred short vpi_revents; /* what has happened */ 129204552Salfred } v_pollinfo; 130204552Salfred#ifdef DEBUG_LOCKS 131204552Salfred const char *filename; /* Source file doing locking */ 132204552Salfred int line; /* Line number doing locking */ 133204552Salfred#endif 134204552Salfred}; 135204552Salfred#define v_mountedhere v_un.vu_mountedhere 136204552Salfred#define v_socket v_un.vu_socket 137204552Salfred#define v_rdev v_un.vu_spec.vu_specinfo 138204552Salfred#define v_specnext v_un.vu_spec.vu_specnext 139204552Salfred#define v_fifoinfo v_un.vu_fifoinfo 140204552Salfred 141204552Salfred#define VN_POLLEVENT(vp, events) \ 142204552Salfred do { \ 143204552Salfred if ((vp)->v_pollinfo.vpi_events & (events)) \ 144204552Salfred vn_pollevent((vp), (events)); \ 145204552Salfred } while (0) 146204552Salfred 147204552Salfred/* 148204552Salfred * Vnode flags. 149204552Salfred */ 150204552Salfred#define VROOT 0x00001 /* root of its file system */ 151204552Salfred#define VTEXT 0x00002 /* vnode is a pure text prototype */ 152204552Salfred#define VSYSTEM 0x00004 /* vnode being used by kernel */ 153204552Salfred#define VISTTY 0x00008 /* vnode represents a tty */ 154204552Salfred#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 155204552Salfred#define VXWANT 0x00200 /* process is waiting for vnode */ 156204552Salfred#define VBWAIT 0x00400 /* waiting for output to complete */ 157204552Salfred/* open for business 0x00800 */ 158204552Salfred/* open for business 0x01000 */ 159204552Salfred#define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 160204552Salfred/* open for business 0x04000 */ 161204552Salfred#define VAGE 0x08000 /* Insert vnode at head of free list */ 162204552Salfred#define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 163204552Salfred#define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 164204552Salfred#define VDOOMED 0x40000 /* This vnode is being recycled */ 165204552Salfred#define VFREE 0x80000 /* This vnode is on the freelist */ 166204552Salfred#define VTBFREE 0x100000 /* This vnode is on the to-be-freelist */ 167204552Salfred#define VONWORKLST 0x200000 /* On syncer work-list */ 168204552Salfred#define VMOUNT 0x400000 /* Mount in progress */ 169204552Salfred 170204552Salfred/* 171204552Salfred * Vnode attributes. A field value of VNOVAL represents a field whose value 172204552Salfred * is unavailable (getattr) or which is not to be changed (setattr). 173204552Salfred */ 174204552Salfredstruct vattr { 175204552Salfred enum vtype va_type; /* vnode type (for create) */ 176204552Salfred u_short va_mode; /* files access mode and type */ 177204552Salfred short va_nlink; /* number of references to file */ 178204552Salfred uid_t va_uid; /* owner user id */ 179204552Salfred gid_t va_gid; /* owner group id */ 180204552Salfred udev_t va_fsid; /* file system id */ 181204552Salfred long va_fileid; /* file id */ 182204552Salfred u_quad_t va_size; /* file size in bytes */ 183204552Salfred long va_blocksize; /* blocksize preferred for i/o */ 184204552Salfred struct timespec va_atime; /* time of last access */ 185204552Salfred struct timespec va_mtime; /* time of last modification */ 186204552Salfred struct timespec va_ctime; /* time file changed */ 187204552Salfred u_long va_gen; /* generation number of file */ 188204552Salfred u_long va_flags; /* flags defined for file */ 189204552Salfred udev_t va_rdev; /* device the special file represents */ 190204552Salfred u_quad_t va_bytes; /* bytes of disk space held by file */ 191204552Salfred u_quad_t va_filerev; /* file modification number */ 192204552Salfred u_int va_vaflags; /* operations flags, see below */ 193204552Salfred long va_spare; /* remain quad aligned */ 194204552Salfred}; 195204552Salfred 196204552Salfred/* 197204552Salfred * Flags for va_vaflags. 198204552Salfred */ 199204552Salfred#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 200204552Salfred#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 201204552Salfred 202204552Salfred/* 203204552Salfred * Flags for ioflag. 204204552Salfred */ 205204552Salfred#define IO_UNIT 0x01 /* do I/O as atomic unit */ 206204552Salfred#define IO_APPEND 0x02 /* append write to end */ 207204552Salfred#define IO_SYNC 0x04 /* do I/O synchronously */ 208204552Salfred#define IO_NODELOCKED 0x08 /* underlying node already locked */ 209204552Salfred#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 210204552Salfred#define IO_VMIO 0x20 /* data already in VMIO space */ 211204552Salfred#define IO_INVAL 0x40 /* invalidate after I/O */ 212204552Salfred 213204552Salfred/* 214204552Salfred * Modes. Some values same as Ixxx entries from inode.h for now. 215204552Salfred */ 216204552Salfred#define VSUID 04000 /* set user id on execution */ 217204552Salfred#define VSGID 02000 /* set group id on execution */ 218204552Salfred#define VSVTX 01000 /* save swapped text even after use */ 219204552Salfred#define VREAD 00400 /* read, write, execute permissions */ 220204552Salfred#define VWRITE 00200 221204552Salfred#define VEXEC 00100 222204552Salfred 223204552Salfred/* 224204552Salfred * Token indicating no attribute value yet assigned. 225204552Salfred */ 226204552Salfred#define VNOVAL (-1) 227204552Salfred 228204552Salfred#ifdef KERNEL 229204552Salfred 230204552Salfred#ifdef MALLOC_DECLARE 231204552SalfredMALLOC_DECLARE(M_VNODE); 232#endif 233 234/* 235 * Convert between vnode types and inode formats (since POSIX.1 236 * defines mode word of stat structure in terms of inode formats). 237 */ 238extern enum vtype iftovt_tab[]; 239extern int vttoif_tab[]; 240#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 241#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 242#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 243 244/* 245 * Flags to various vnode functions. 246 */ 247#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 248#define FORCECLOSE 0x0002 /* vflush: force file closure */ 249#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 250#define DOCLOSE 0x0008 /* vclean: close active files */ 251#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 252#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 253 254#define VREF(vp) vref(vp) 255 256 257#ifdef DIAGNOSTIC 258#define VATTR_NULL(vap) vattr_null(vap) 259#else 260#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 261#endif /* DIAGNOSTIC */ 262 263#define NULLVP ((struct vnode *)NULL) 264 265#define VNODEOP_SET(f) \ 266 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 267 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 268 269/* 270 * Global vnode data. 271 */ 272extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 273extern int desiredvnodes; /* number of vnodes desired */ 274extern time_t syncdelay; /* max time to delay syncing data */ 275extern time_t filedelay; /* time to delay syncing files */ 276extern time_t dirdelay; /* time to delay syncing directories */ 277extern time_t metadelay; /* time to delay syncing metadata */ 278extern struct vm_zone *namei_zone; 279extern int prtactive; /* nonzero to call vprint() */ 280extern struct vattr va_null; /* predefined null vattr structure */ 281extern int vfs_ioopt; 282 283/* 284 * Macro/function to check for client cache inconsistency w.r.t. leasing. 285 */ 286#define LEASE_READ 0x1 /* Check lease for readers */ 287#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 288 289 290extern void (*lease_updatetime) __P((int deltat)); 291 292#define VSHOULDFREE(vp) \ 293 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 294 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 295 (!(vp)->v_object || \ 296 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 297 298#define VSHOULDBUSY(vp) \ 299 (((vp)->v_flag & (VFREE|VTBFREE)) && \ 300 ((vp)->v_holdcnt || (vp)->v_usecount)) 301 302#endif /* KERNEL */ 303 304 305/* 306 * Mods for extensibility. 307 */ 308 309/* 310 * Flags for vdesc_flags: 311 */ 312#define VDESC_MAX_VPS 16 313/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 314#define VDESC_VP0_WILLRELE 0x0001 315#define VDESC_VP1_WILLRELE 0x0002 316#define VDESC_VP2_WILLRELE 0x0004 317#define VDESC_VP3_WILLRELE 0x0008 318#define VDESC_NOMAP_VPP 0x0100 319#define VDESC_VPP_WILLRELE 0x0200 320 321/* 322 * VDESC_NO_OFFSET is used to identify the end of the offset list 323 * and in places where no such field exists. 324 */ 325#define VDESC_NO_OFFSET -1 326 327/* 328 * This structure describes the vnode operation taking place. 329 */ 330struct vnodeop_desc { 331 int vdesc_offset; /* offset in vector--first for speed */ 332 char *vdesc_name; /* a readable name for debugging */ 333 int vdesc_flags; /* VDESC_* flags */ 334 335 /* 336 * These ops are used by bypass routines to map and locate arguments. 337 * Creds and procs are not needed in bypass routines, but sometimes 338 * they are useful to (for example) transport layers. 339 * Nameidata is useful because it has a cred in it. 340 */ 341 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 342 int vdesc_vpp_offset; /* return vpp location */ 343 int vdesc_cred_offset; /* cred location, if any */ 344 int vdesc_proc_offset; /* proc location, if any */ 345 int vdesc_componentname_offset; /* if any */ 346 /* 347 * Finally, we've got a list of private data (about each operation) 348 * for each transport layer. (Support to manage this list is not 349 * yet part of BSD.) 350 */ 351 caddr_t *vdesc_transports; 352}; 353 354#ifdef KERNEL 355/* 356 * A list of all the operation descs. 357 */ 358extern struct vnodeop_desc *vnodeop_descs[]; 359 360/* 361 * Interlock for scanning list of vnodes attached to a mountpoint 362 */ 363extern struct simplelock mntvnode_slock; 364 365/* 366 * This macro is very helpful in defining those offsets in the vdesc struct. 367 * 368 * This is stolen from X11R4. I ignored all the fancy stuff for 369 * Crays, so if you decide to port this to such a serious machine, 370 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 371 */ 372#define VOPARG_OFFSET(p_type,field) \ 373 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 374#define VOPARG_OFFSETOF(s_type,field) \ 375 VOPARG_OFFSET(s_type*,field) 376#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 377 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 378 379 380/* 381 * This structure is used to configure the new vnodeops vector. 382 */ 383struct vnodeopv_entry_desc { 384 struct vnodeop_desc *opve_op; /* which operation this is */ 385 vop_t *opve_impl; /* code implementing this operation */ 386}; 387struct vnodeopv_desc { 388 /* ptr to the ptr to the vector where op should go */ 389 vop_t ***opv_desc_vector_p; 390 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 391}; 392 393/* 394 * A generic structure. 395 * This can be used by bypass routines to identify generic arguments. 396 */ 397struct vop_generic_args { 398 struct vnodeop_desc *a_desc; 399 /* other random data follows, presumably */ 400}; 401 402 403#ifdef DEBUG_VFS_LOCKS 404/* 405 * Macros to aid in tracing VFS locking problems. Not totally 406 * reliable since if the process sleeps between changing the lock 407 * state and checking it with the assert, some other process could 408 * change the state. They are good enough for debugging a single 409 * filesystem using a single-threaded test. I find that 'cvs co src' 410 * is a pretty good test. 411 */ 412 413/* 414 * [dfr] Kludge until I get around to fixing all the vfs locking. 415 */ 416#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 417 || (vp)->v_tag == VT_MFS \ 418 || (vp)->v_tag == VT_NFS \ 419 || (vp)->v_tag == VT_LFS \ 420 || (vp)->v_tag == VT_ISOFS \ 421 || (vp)->v_tag == VT_MSDOSFS \ 422 || (vp)->v_tag == VT_DEVFS) 423 424#define ASSERT_VOP_LOCKED(vp, str) \ 425 if ((vp) && IS_LOCKING_VFS(vp) && !VOP_ISLOCKED(vp)) { \ 426 panic("%s: %p is not locked but should be", str, vp); \ 427 } 428 429#define ASSERT_VOP_UNLOCKED(vp, str) \ 430 if ((vp) && IS_LOCKING_VFS(vp) && VOP_ISLOCKED(vp)) { \ 431 panic("%s: %p is locked but shouldn't be", str, vp); \ 432 } 433 434#else 435 436#define ASSERT_VOP_LOCKED(vp, str) 437#define ASSERT_VOP_UNLOCKED(vp, str) 438 439#endif 440 441/* 442 * VOCALL calls an op given an ops vector. We break it out because BSD's 443 * vclean changes the ops vector and then wants to call ops with the old 444 * vector. 445 */ 446#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 447 448/* 449 * This call works for vnodes in the kernel. 450 */ 451#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 452#define VDESC(OP) (& __CONCAT(OP,_desc)) 453#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 454 455/* 456 * VMIO support inline 457 */ 458 459extern int vmiodirenable; 460 461static __inline int 462vn_canvmio(struct vnode *vp) 463{ 464 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 465 return(TRUE); 466 return(FALSE); 467} 468 469/* 470 * Finally, include the default set of vnode operations. 471 */ 472#include "vnode_if.h" 473 474/* 475 * Public vnode manipulation functions. 476 */ 477struct componentname; 478struct file; 479struct mount; 480struct nameidata; 481struct ostat; 482struct proc; 483struct stat; 484struct nstat; 485struct ucred; 486struct uio; 487struct vattr; 488struct vnode; 489struct vop_bwrite_args; 490 491extern int (*lease_check_hook) __P((struct vop_lease_args *)); 492 493void addalias __P((struct vnode *vp, dev_t nvp_rdev)); 494void addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 495int bdevvp __P((dev_t dev, struct vnode **vpp)); 496/* cache_* may belong in namei.h. */ 497void cache_enter __P((struct vnode *dvp, struct vnode *vp, 498 struct componentname *cnp)); 499int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 500 struct componentname *cnp)); 501void cache_purge __P((struct vnode *vp)); 502void cache_purgevfs __P((struct mount *mp)); 503void cvtstat __P((struct stat *st, struct ostat *ost)); 504void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 505int getnewvnode __P((enum vtagtype tag, 506 struct mount *mp, vop_t **vops, struct vnode **vpp)); 507int lease_check __P((struct vop_lease_args *ap)); 508int spec_vnoperate __P((struct vop_generic_args *)); 509int speedup_syncer __P((void)); 510void vattr_null __P((struct vattr *vap)); 511int vcount __P((struct vnode *vp)); 512void vdrop __P((struct vnode *)); 513int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 514void vfs_add_vnodeops __P((const void *)); 515void vfs_rm_vnodeops __P((const void *)); 516int vflush __P((struct mount *mp, struct vnode *skipvp, int flags)); 517int vget __P((struct vnode *vp, int lockflag, struct proc *p)); 518void vgone __P((struct vnode *vp)); 519void vhold __P((struct vnode *)); 520int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 521 522 struct proc *p, int slpflag, int slptimeo)); 523int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p, 524 off_t length, int blksize)); 525void vprint __P((char *label, struct vnode *vp)); 526int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 527 struct proc *p)); 528int vn_close __P((struct vnode *vp, 529 int flags, struct ucred *cred, struct proc *p)); 530int vn_isdisk __P((struct vnode *vp)); 531int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 532#ifdef DEBUG_LOCKS 533int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p, 534 const char *filename, int line)); 535#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 536#endif 537int vn_open __P((struct nameidata *ndp, int fmode, int cmode)); 538void vn_pollevent __P((struct vnode *vp, int events)); 539void vn_pollgone __P((struct vnode *vp)); 540int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events)); 541int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 542 int len, off_t offset, enum uio_seg segflg, int ioflg, 543 struct ucred *cred, int *aresid, struct proc *p)); 544int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 545dev_t vn_todev __P((struct vnode *vp)); 546int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 547int vfs_object_create __P((struct vnode *vp, struct proc *p, 548 struct ucred *cred)); 549void vfs_timestamp __P((struct timespec *)); 550int vn_writechk __P((struct vnode *vp)); 551int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 552int vop_stdislocked __P((struct vop_islocked_args *)); 553int vop_stdlock __P((struct vop_lock_args *)); 554int vop_stdunlock __P((struct vop_unlock_args *)); 555int vop_noislocked __P((struct vop_islocked_args *)); 556int vop_nolock __P((struct vop_lock_args *)); 557int vop_nopoll __P((struct vop_poll_args *)); 558int vop_nounlock __P((struct vop_unlock_args *)); 559int vop_stdpathconf __P((struct vop_pathconf_args *)); 560int vop_stdpoll __P((struct vop_poll_args *)); 561int vop_revoke __P((struct vop_revoke_args *)); 562int vop_sharedlock __P((struct vop_lock_args *)); 563int vop_eopnotsupp __P((struct vop_generic_args *ap)); 564int vop_ebadf __P((struct vop_generic_args *ap)); 565int vop_einval __P((struct vop_generic_args *ap)); 566int vop_enotty __P((struct vop_generic_args *ap)); 567int vop_defaultop __P((struct vop_generic_args *ap)); 568int vop_null __P((struct vop_generic_args *ap)); 569int vop_panic __P((struct vop_generic_args *ap)); 570 571void vput __P((struct vnode *vp)); 572void vrele __P((struct vnode *vp)); 573void vref __P((struct vnode *vp)); 574void vbusy __P((struct vnode *vp)); 575 576extern vop_t **default_vnodeop_p; 577extern vop_t **spec_vnodeop_p; 578 579extern TAILQ_HEAD(tobefreelist, vnode) 580 vnode_tobefree_list; /* vnode free list */ 581 582#endif /* KERNEL */ 583 584#endif /* !_SYS_VNODE_H_ */ 585