vnode.h revision 31561
11541Srgrimes/* 21541Srgrimes * Copyright (c) 1989, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 3. All advertising materials mentioning features or use of this software 141541Srgrimes * must display the following acknowledgement: 151541Srgrimes * This product includes software developed by the University of 161541Srgrimes * California, Berkeley and its contributors. 171541Srgrimes * 4. Neither the name of the University nor the names of its contributors 181541Srgrimes * may be used to endorse or promote products derived from this software 191541Srgrimes * without specific prior written permission. 201541Srgrimes * 211541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2985052Sru * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3050477Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311541Srgrimes * SUCH DAMAGE. 321541Srgrimes * 332168Spaul * @(#)vnode.h 8.7 (Berkeley) 2/4/94 342168Spaul * $Id: vnode.h,v 1.57 1997/11/22 08:35:43 bde Exp $ 352168Spaul */ 361541Srgrimes 371541Srgrimes#ifndef _SYS_VNODE_H_ 388876Srgrimes#define _SYS_VNODE_H_ 391541Srgrimes 401541Srgrimes#include <sys/queue.h> 411541Srgrimes 421541Srgrimes#include <machine/lock.h> 431541Srgrimes 441541Srgrimes/* 451541Srgrimes * The vnode is the focus of all file activity in UNIX. There is a 461541Srgrimes * unique vnode allocated for each active file, each current directory, 471541Srgrimes * each mounted-on file, text file, and the root. 481541Srgrimes */ 491541Srgrimes 501541Srgrimes/* 511541Srgrimes * Vnode types. VNON means no type. 521541Srgrimes */ 531541Srgrimesenum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 541541Srgrimes 551541Srgrimes/* 561541Srgrimes * Vnode tag types. 57122922Sandre * These are for the benefit of external programs only (e.g., pstat) 58122922Sandre * and should NEVER be inspected by the kernel. 59122922Sandre */ 60122922Sandreenum vtagtype { 61122922Sandre VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 62122922Sandre VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 631541Srgrimes VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS 641541Srgrimes}; 651541Srgrimes 661541Srgrimes/* 671541Srgrimes * Each underlying filesystem allocates its own private area and hangs 6813765Smpp * it from v_data. If non-null, this area is freed in getnewvnode(). 6913765Smpp */ 701541SrgrimesLIST_HEAD(buflists, buf); 711541Srgrimes 721541Srgrimestypedef int vop_t __P((void *)); 731541Srgrimesstruct namecache; 745791Swollman 751541Srgrimes/* 761541Srgrimes * Reading or writing any of these items requires holding the appropriate lock. 771541Srgrimes * v_freelist is locked by the global vnode_free_list simple lock. 781541Srgrimes * v_mntvnodes is locked by the global mntvnodes simple lock. 791541Srgrimes * v_flag, v_usecount, v_holdcount and v_writecount are 801541Srgrimes * locked by the v_interlock simple lock. 811541Srgrimes */ 821541Srgrimesstruct vnode { 831541Srgrimes u_long v_flag; /* vnode flags (see below) */ 841541Srgrimes int v_usecount; /* reference count of users */ 851541Srgrimes int v_writecount; /* reference count of writers */ 865833Sbde int v_holdcnt; /* page & buffer references */ 875833Sbde daddr_t v_lastr; /* last read (read-ahead) */ 885833Sbde u_long v_id; /* capability identifier */ 895833Sbde struct mount *v_mount; /* ptr to vfs we are in */ 905833Sbde vop_t **v_op; /* vnode operations vector */ 911541Srgrimes TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 921541Srgrimes LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ 931541Srgrimes struct buflists v_cleanblkhd; /* clean blocklist head */ 941541Srgrimes struct buflists v_dirtyblkhd; /* dirty blocklist head */ 951541Srgrimes long v_numoutput; /* num of writes in progress */ 961541Srgrimes enum vtype v_type; /* vnode type */ 971541Srgrimes union { 981541Srgrimes struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 991541Srgrimes struct socket *vu_socket; /* unix ipc (VSOCK) */ 1001541Srgrimes struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 1011541Srgrimes struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 1021541Srgrimes } v_un; 103128454Sluigi struct nqlease *v_lease; /* Soft reference to lease */ 104128454Sluigi daddr_t v_lastw; /* last write (write cluster) */ 105128454Sluigi daddr_t v_cstart; /* start block of cluster */ 106128454Sluigi daddr_t v_lasta; /* last allocation */ 107128454Sluigi int v_clen; /* length of current cluster */ 1081541Srgrimes struct vm_object *v_object; /* Place to store VM object */ 1091541Srgrimes struct simplelock v_interlock; /* lock on usecount and flag */ 1101541Srgrimes struct lock *v_vnlock; /* used for non-locking fs's */ 1117197Swollman enum vtagtype v_tag; /* type of underlying data */ 1121541Srgrimes void *v_data; /* private data for fs */ 113122922Sandre LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 114127828Sluigi TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 115127828Sluigi struct vnode *v_dd; /* .. vnode */ 1161541Srgrimes u_long v_ddid; /* .. capability identifier */ 1171541Srgrimes}; 1181541Srgrimes#define v_mountedhere v_un.vu_mountedhere 1195791Swollman#define v_socket v_un.vu_socket 120120727Ssam#define v_specinfo v_un.vu_specinfo 121120727Ssam#define v_fifoinfo v_un.vu_fifoinfo 122120727Ssam 123120727Ssam/* 1241541Srgrimes * Vnode flags. 1251541Srgrimes */ 1261541Srgrimes#define VROOT 0x00001 /* root of its file system */ 1271541Srgrimes#define VTEXT 0x00002 /* vnode is a pure text prototype */ 1281541Srgrimes#define VSYSTEM 0x00004 /* vnode being used by kernel */ 1291541Srgrimes#define VISTTY 0x00008 /* vnode represents a tty */ 1301541Srgrimes#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 1311541Srgrimes#define VXWANT 0x00200 /* process is waiting for vnode */ 1321541Srgrimes#define VBWAIT 0x00400 /* waiting for output to complete */ 1331541Srgrimes#define VALIASED 0x00800 /* vnode has an alias */ 1341541Srgrimes#define VDIROP 0x01000 /* LFS: vnode is involved in a directory op */ 1351541Srgrimes#define VVMIO 0x02000 /* VMIO flag */ 1361541Srgrimes#define VNINACT 0x04000 /* LFS: skip ufs_inactive() in lfs_vunref */ 1371541Srgrimes#define VAGE 0x08000 /* Insert vnode at head of free list */ 1381541Srgrimes#define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 1391541Srgrimes#define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 1404104Swollman#define VDOOMED 0x40000 /* This vnode is being recycled */ 1414104Swollman#define VFREE 0x80000 /* This vnode is on the freelist */ 1421541Srgrimes 1431541Srgrimes/* 1441541Srgrimes * Vnode attributes. A field value of VNOVAL represents a field whose value 1451541Srgrimes * is unavailable (getattr) or which is not to be changed (setattr). 1461541Srgrimes */ 1471541Srgrimesstruct vattr { 1481541Srgrimes enum vtype va_type; /* vnode type (for create) */ 14986764Sjlemon u_short va_mode; /* files access mode and type */ 1501541Srgrimes short va_nlink; /* number of references to file */ 1511541Srgrimes uid_t va_uid; /* owner user id */ 15217835Sjulian gid_t va_gid; /* owner group id */ 1531541Srgrimes long va_fsid; /* file system id (dev for now) */ 1541541Srgrimes long va_fileid; /* file id */ 1551541Srgrimes u_quad_t va_size; /* file size in bytes */ 1561541Srgrimes long va_blocksize; /* blocksize preferred for i/o */ 1571541Srgrimes struct timespec va_atime; /* time of last access */ 158122921Sandre struct timespec va_mtime; /* time of last modification */ 159122921Sandre struct timespec va_ctime; /* time file changed */ 160122921Sandre u_long va_gen; /* generation number of file */ 161122921Sandre u_long va_flags; /* flags defined for file */ 162122921Sandre dev_t va_rdev; /* device the special file represents */ 1635099Swollman u_quad_t va_bytes; /* bytes of disk space held by file */ 1645099Swollman u_quad_t va_filerev; /* file modification number */ 16518839Swollman u_int va_vaflags; /* operations flags, see below */ 1666245Swollman long va_spare; /* remain quad aligned */ 16715652Swollman}; 16815652Swollman 16915652Swollman/* 17015652Swollman * Flags for va_vaflags. 1711541Srgrimes */ 1721541Srgrimes#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 1731541Srgrimes#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 1741541Srgrimes 1751541Srgrimes/* 1761541Srgrimes * Flags for ioflag. 1771541Srgrimes */ 1781541Srgrimes#define IO_UNIT 0x01 /* do I/O as atomic unit */ 1791541Srgrimes#define IO_APPEND 0x02 /* append write to end */ 1801541Srgrimes#define IO_SYNC 0x04 /* do I/O synchronously */ 1811541Srgrimes#define IO_NODELOCKED 0x08 /* underlying node already locked */ 1821541Srgrimes#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 1831541Srgrimes#define IO_VMIO 0x20 /* data already in VMIO space */ 1841541Srgrimes 1851541Srgrimes/* 1861541Srgrimes * Modes. Some values same as Ixxx entries from inode.h for now. 1871541Srgrimes */ 1881541Srgrimes#define VSUID 04000 /* set user id on execution */ 1891541Srgrimes#define VSGID 02000 /* set group id on execution */ 1901541Srgrimes#define VSVTX 01000 /* save swapped text even after use */ 1911541Srgrimes#define VREAD 00400 /* read, write, execute permissions */ 1921541Srgrimes#define VWRITE 00200 1931541Srgrimes#define VEXEC 00100 1941541Srgrimes 1951541Srgrimes/* 1961541Srgrimes * Token indicating no attribute value yet assigned. 1971541Srgrimes */ 1981541Srgrimes#define VNOVAL (-1) 1991541Srgrimes 2005791Swollman#ifdef KERNEL 2011541Srgrimes 20251252Sru#ifdef MALLOC_DECLARE 20351252SruMALLOC_DECLARE(M_VNODE); 20451252Sru#endif 2051541Srgrimes 2061541Srgrimes/* 2071541Srgrimes * Convert between vnode types and inode formats (since POSIX.1 2081541Srgrimes * defines mode word of stat structure in terms of inode formats). 2091541Srgrimes */ 2101541Srgrimesextern enum vtype iftovt_tab[]; 2111541Srgrimesextern int vttoif_tab[]; 2121541Srgrimes#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 2131541Srgrimes#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 2141541Srgrimes#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 2151541Srgrimes 2161541Srgrimes/* 2171541Srgrimes * Flags to various vnode functions. 2181541Srgrimes */ 21921666Swollman#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 22021666Swollman#define FORCECLOSE 0x0002 /* vflush: force file closure */ 22189498Sru#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 2221541Srgrimes#define DOCLOSE 0x0008 /* vclean: close active files */ 22351252Sru#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 22451252Sru#define V_SAVEMETA 0x0002 /* vinvalbuf: leave indirect blocks */ 22551252Sru#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 2261541Srgrimes 2271541Srgrimes#define VREF(vp) vref(vp) 22851252Sru 2291541Srgrimes#ifdef DIAGNOSTIC 2301541Srgrimes#define VATTR_NULL(vap) vattr_null(vap) 2311541Srgrimes#else 2321541Srgrimes#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 2331541Srgrimes#endif /* DIAGNOSTIC */ 2341541Srgrimes 2351541Srgrimes#define NULLVP ((struct vnode *)NULL) 23651252Sru 2371541Srgrimes#ifdef VFS_LKM 2381541Srgrimes#define VNODEOP_SET(f) DATA_SET(MODVNOPS,f) 2391541Srgrimes#else 2401541Srgrimes#define VNODEOP_SET(f) DATA_SET(vfs_opv_descs_,f) 2411541Srgrimes#endif 2421541Srgrimes 2431541Srgrimes/* 2441541Srgrimes * Global vnode data. 2451541Srgrimes */ 2461541Srgrimesextern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 2471541Srgrimesextern int desiredvnodes; /* number of vnodes desired */ 2481541Srgrimesextern struct vm_zone *namei_zone; 2491541Srgrimesextern int prtactive; /* nonzero to call vprint() */ 2501541Srgrimesextern struct vattr va_null; /* predefined null vattr structure */ 2511541Srgrimes 2521541Srgrimes/* 2531541Srgrimes * Macro/function to check for client cache inconsistency w.r.t. leasing. 2541541Srgrimes */ 2551541Srgrimes#define LEASE_READ 0x1 /* Check lease for readers */ 2561541Srgrimes#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 2571541Srgrimes 2581541Srgrimes 2591541Srgrimesextern void (*lease_updatetime) __P((int deltat)); 2601541Srgrimes 2611541Srgrimes#define VSHOULDFREE(vp) \ 2621541Srgrimes (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 26385074Sru !(vp)->v_holdcnt && !(vp)->v_usecount) 26485074Sru 26585074Sru#define VSHOULDBUSY(vp) \ 2661541Srgrimes (((vp)->v_flag & VFREE) && \ 2671541Srgrimes ((vp)->v_holdcnt || (vp)->v_usecount)) 268128185Sluigi 269128185Sluigi 270128185Sluigi#endif /* KERNEL */ 271128185Sluigi 272128185Sluigi 273128185Sluigi/* 274128185Sluigi * Mods for extensibility. 275128185Sluigi */ 276128185Sluigi 277128185Sluigi/* 278128185Sluigi * Flags for vdesc_flags: 279128185Sluigi */ 28055205Speter#define VDESC_MAX_VPS 16 281117752Shsu/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 282120727Ssam#define VDESC_VP0_WILLRELE 0x0001 283120727Ssam#define VDESC_VP1_WILLRELE 0x0002 284120727Ssam#define VDESC_VP2_WILLRELE 0x0004 285120727Ssam#define VDESC_VP3_WILLRELE 0x0008 286120727Ssam#define VDESC_NOMAP_VPP 0x0100 287120727Ssam#define VDESC_VPP_WILLRELE 0x0200 288117752Shsu 289122334Ssam/* 290122334Ssam * VDESC_NO_OFFSET is used to identify the end of the offset list 291122334Ssam * and in places where no such field exists. 292122334Ssam */ 293122334Ssam#define VDESC_NO_OFFSET -1 294122334Ssam 295122334Ssam/* 296122334Ssam * This structure describes the vnode operation taking place. 297122334Ssam */ 298122334Ssamstruct vnodeop_desc { 299122334Ssam int vdesc_offset; /* offset in vector--first for speed */ 300122334Ssam char *vdesc_name; /* a readable name for debugging */ 301122334Ssam int vdesc_flags; /* VDESC_* flags */ 302122334Ssam 303122334Ssam /* 304122334Ssam * These ops are used by bypass routines to map and locate arguments. 305122334Ssam * Creds and procs are not needed in bypass routines, but sometimes 306122334Ssam * they are useful to (for example) transport layers. 307122334Ssam * Nameidata is useful because it has a cred in it. 308122334Ssam */ 309122334Ssam int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 310122334Ssam int vdesc_vpp_offset; /* return vpp location */ 31146568Speter int vdesc_cred_offset; /* cred location, if any */ 312122334Ssam int vdesc_proc_offset; /* proc location, if any */ 313122334Ssam int vdesc_componentname_offset; /* if any */ 314122334Ssam /* 315120727Ssam * Finally, we've got a list of private data (about each operation) 3161541Srgrimes * for each transport layer. (Support to manage this list is not 3179759Sbde * yet part of BSD.) 3181541Srgrimes */ 31921666Swollman caddr_t *vdesc_transports; 32021666Swollman}; 32192725Salfred 32292725Salfred#ifdef KERNEL 32392725Salfred/* 32492725Salfred * A list of all the operation descs. 32592725Salfred */ 32692725Salfredextern struct vnodeop_desc *vnodeop_descs[]; 32792725Salfred 328128621Sluigi/* 329128621Sluigi * Interlock for scanning list of vnodes attached to a mountpoint 330128621Sluigi */ 331128621Sluigiextern struct simplelock mntvnode_slock; 332128621Sluigi 333128621Sluigi/* 334128621Sluigi * This macro is very helpful in defining those offsets in the vdesc struct. 335128621Sluigi * 336128621Sluigi * This is stolen from X11R4. I ignored all the fancy stuff for 337128621Sluigi * Crays, so if you decide to port this to such a serious machine, 338128621Sluigi * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 339128621Sluigi */ 340128621Sluigi#define VOPARG_OFFSET(p_type,field) \ 341128621Sluigi ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 342128621Sluigi#define VOPARG_OFFSETOF(s_type,field) \ 343120727Ssam VOPARG_OFFSET(s_type*,field) 344121770Ssam#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 34592725Salfred ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 34692725Salfred 34792725Salfred 34892725Salfred/* 349120727Ssam * This structure is used to configure the new vnodeops vector. 35092725Salfred */ 35192725Salfredstruct vnodeopv_entry_desc { 35292725Salfred struct vnodeop_desc *opve_op; /* which operation this is */ 353111767Smdodd vop_t *opve_impl; /* code implementing this operation */ 3541541Srgrimes}; 3552168Spaulstruct vnodeopv_desc { 3562168Spaul /* ptr to the ptr to the vector where op should go */ 357 vop_t ***opv_desc_vector_p; 358 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 359}; 360 361/* 362 * A generic structure. 363 * This can be used by bypass routines to identify generic arguments. 364 */ 365struct vop_generic_args { 366 struct vnodeop_desc *a_desc; 367 /* other random data follows, presumably */ 368}; 369 370 371#ifdef DEBUG_VFS_LOCKS 372/* 373 * Macros to aid in tracing VFS locking problems. Not totally 374 * reliable since if the process sleeps between changing the lock 375 * state and checking it with the assert, some other process could 376 * change the state. They are good enough for debugging a single 377 * filesystem using a single-threaded test. I find that 'cvs co src' 378 * is a pretty good test. 379 */ 380 381/* 382 * [dfr] Kludge until I get around to fixing all the vfs locking. 383 */ 384#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 385 || (vp)->v_tag == VT_MFS \ 386 || (vp)->v_tag == VT_NFS \ 387 || (vp)->v_tag == VT_LFS \ 388 || (vp)->v_tag == VT_ISOFS \ 389 || (vp)->v_tag == VT_MSDOSFS \ 390 || (vp)->v_tag == VT_DEVFS) 391 392#define ASSERT_VOP_LOCKED(vp, str) \ 393 if ((vp) && IS_LOCKING_VFS(vp) && !VOP_ISLOCKED(vp)) { \ 394 panic("%s: %x is not locked but should be", str, vp); \ 395 } 396 397#define ASSERT_VOP_UNLOCKED(vp, str) \ 398 if ((vp) && IS_LOCKING_VFS(vp) && VOP_ISLOCKED(vp)) { \ 399 panic("%s: %x is locked but shouldn't be", str, vp); \ 400 } 401 402#else 403 404#define ASSERT_VOP_LOCKED(vp, str) 405#define ASSERT_VOP_UNLOCKED(vp, str) 406 407#endif 408 409/* 410 * VOCALL calls an op given an ops vector. We break it out because BSD's 411 * vclean changes the ops vector and then wants to call ops with the old 412 * vector. 413 */ 414#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 415 416/* 417 * This call works for vnodes in the kernel. 418 */ 419#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 420#define VDESC(OP) (& __CONCAT(OP,_desc)) 421#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 422 423/* 424 * Finally, include the default set of vnode operations. 425 */ 426#include "vnode_if.h" 427 428/* 429 * Public vnode manipulation functions. 430 */ 431struct componentname; 432struct file; 433struct mount; 434struct nameidata; 435struct ostat; 436struct proc; 437struct stat; 438struct ucred; 439struct uio; 440struct vattr; 441struct vnode; 442struct vop_bwrite_args; 443 444extern int (*lease_check_hook) __P((struct vop_lease_args *)); 445 446int bdevvp __P((dev_t dev, struct vnode **vpp)); 447/* cache_* may belong in namei.h. */ 448void cache_enter __P((struct vnode *dvp, struct vnode *vp, 449 struct componentname *cnp)); 450int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 451 struct componentname *cnp)); 452void cache_purge __P((struct vnode *vp)); 453void cache_purgevfs __P((struct mount *mp)); 454void cvtstat __P((struct stat *st, struct ostat *ost)); 455int getnewvnode __P((enum vtagtype tag, 456 struct mount *mp, vop_t **vops, struct vnode **vpp)); 457int lease_check __P((struct vop_lease_args *ap)); 458void vattr_null __P((struct vattr *vap)); 459int vcount __P((struct vnode *vp)); 460void vdrop __P((struct vnode *)); 461int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 462void vfs_opv_init __P((struct vnodeopv_desc **them)); 463int vflush __P((struct mount *mp, struct vnode *skipvp, int flags)); 464int vget __P((struct vnode *vp, int lockflag, struct proc *p)); 465void vgone __P((struct vnode *vp)); 466void vhold __P((struct vnode *)); 467int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 468 struct proc *p, int slpflag, int slptimeo)); 469void vprint __P((char *label, struct vnode *vp)); 470int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 471 struct proc *p)); 472int vn_close __P((struct vnode *vp, 473 int flags, struct ucred *cred, struct proc *p)); 474int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 475int vn_open __P((struct nameidata *ndp, int fmode, int cmode)); 476int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 477 int len, off_t offset, enum uio_seg segflg, int ioflg, 478 struct ucred *cred, int *aresid, struct proc *p)); 479int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 480int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 481int vfs_object_create __P((struct vnode *vp, struct proc *p, 482 struct ucred *cred, int waslocked)); 483int vn_writechk __P((struct vnode *vp)); 484int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 485int vop_stdislocked __P((struct vop_islocked_args *)); 486int vop_stdlock __P((struct vop_lock_args *)); 487int vop_stdunlock __P((struct vop_unlock_args *)); 488int vop_noislocked __P((struct vop_islocked_args *)); 489int vop_nolock __P((struct vop_lock_args *)); 490int vop_nopoll __P((struct vop_poll_args *)); 491int vop_nounlock __P((struct vop_unlock_args *)); 492int vop_stdpathconf __P((struct vop_pathconf_args *)); 493int vop_revoke __P((struct vop_revoke_args *)); 494int vop_sharedlock __P((struct vop_lock_args *)); 495int vop_eopnotsupp __P((struct vop_generic_args *ap)); 496int vop_ebadf __P((struct vop_generic_args *ap)); 497int vop_einval __P((struct vop_generic_args *ap)); 498int vop_enotty __P((struct vop_generic_args *ap)); 499int vop_defaultop __P((struct vop_generic_args *ap)); 500int vop_null __P((struct vop_generic_args *ap)); 501 502struct vnode * 503 checkalias __P((struct vnode *vp, dev_t nvp_rdev, struct mount *mp)); 504void vput __P((struct vnode *vp)); 505void vref __P((struct vnode *vp)); 506void vrele __P((struct vnode *vp)); 507 508extern vop_t **default_vnodeop_p; 509#endif /* KERNEL */ 510 511#endif /* !_SYS_VNODE_H_ */ 512