vnode.h revision 88318
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 88318 2001-12-20 22:42:27Z dillon $ 35 */ 36 37#ifndef _SYS_VNODE_H_ 38#define _SYS_VNODE_H_ 39 40/* 41 * XXX - compatability until lockmgr() goes away or all the #includes are 42 * updated. 43 */ 44#include <sys/lockmgr.h> 45 46#include <sys/queue.h> 47#include <sys/_lock.h> 48#include <sys/_mutex.h> 49#include <sys/selinfo.h> 50#include <sys/uio.h> 51#include <sys/acl.h> 52 53/* 54 * The vnode is the focus of all file activity in UNIX. There is a 55 * unique vnode allocated for each active file, each current directory, 56 * each mounted-on file, text file, and the root. 57 */ 58 59/* 60 * Vnode types. VNON means no type. 61 */ 62enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 63 64/* 65 * Vnode tag types. 66 * These are for the benefit of external programs only (e.g., pstat) 67 * and should NEVER be inspected by the kernel. 68 */ 69enum vtagtype { 70 VT_NON, VT_UFS, VT_NFS, VT_UNUSED, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 71 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 72 VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 73 VT_HPFS, VT_NWFS, VT_PSEUDOFS, VT_SMBFS 74}; 75 76/* 77 * Each underlying filesystem allocates its own private area and hangs 78 * it from v_data. If non-null, this area is freed in getnewvnode(). 79 */ 80TAILQ_HEAD(buflists, buf); 81 82typedef int vop_t __P((void *)); 83struct namecache; 84 85/* 86 * Reading or writing any of these items requires holding the appropriate lock. 87 * v_freelist is locked by the global vnode_free_list mutex. 88 * v_mntvnodes is locked by the global mntvnodes mutex. 89 * v_flag, v_usecount, v_holdcount and v_writecount are 90 * locked by the v_interlock mutex. 91 * v_pollinfo is locked by the lock contained inside it. 92 */ 93struct vnode { 94 u_long v_flag; /* vnode flags (see below) */ 95 int v_usecount; /* reference count of users */ 96 int v_writecount; /* reference count of writers */ 97 int v_holdcnt; /* page & buffer references */ 98 u_long v_id; /* capability identifier */ 99 struct mount *v_mount; /* ptr to vfs we are in */ 100 vop_t **v_op; /* vnode operations vector */ 101 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 102 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */ 103 struct buflists v_cleanblkhd; /* clean blocklist head */ 104 struct buflists v_dirtyblkhd; /* dirty blocklist head */ 105 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 106 long v_numoutput; /* num of writes in progress */ 107 enum vtype v_type; /* vnode type */ 108 union { 109 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 110 struct socket *vu_socket; /* unix ipc (VSOCK) */ 111 struct { 112 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 113 SLIST_ENTRY(vnode) vu_specnext; 114 } vu_spec; 115 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 116 } v_un; 117 struct nqlease *v_lease; /* Soft reference to lease */ 118 daddr_t v_lastw; /* last write (write cluster) */ 119 daddr_t v_cstart; /* start block of cluster */ 120 daddr_t v_lasta; /* last allocation */ 121 int v_clen; /* length of current cluster */ 122 struct vm_object *v_object; /* Place to store VM object */ 123 struct mtx v_interlock; /* lock on usecount and flag */ 124 struct lock v_lock; /* used if fs don't have one */ 125 struct lock *v_vnlock; /* pointer to vnode lock */ 126 enum vtagtype v_tag; /* type of underlying data */ 127 void *v_data; /* private data for fs */ 128 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 129 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 130 struct vnode *v_dd; /* .. vnode */ 131 u_long v_ddid; /* .. capability identifier */ 132 struct { 133 struct mtx vpi_lock; /* lock to protect below */ 134 struct selinfo vpi_selinfo; /* identity of poller(s) */ 135 short vpi_events; /* what they are looking for */ 136 short vpi_revents; /* what has happened */ 137 } v_pollinfo; 138 struct thread *v_vxproc; /* thread owning VXLOCK */ 139#ifdef DEBUG_LOCKS 140 const char *filename; /* Source file doing locking */ 141 int line; /* Line number doing locking */ 142#endif 143}; 144#define v_mountedhere v_un.vu_mountedhere 145#define v_socket v_un.vu_socket 146#define v_rdev v_un.vu_spec.vu_specinfo 147#define v_specnext v_un.vu_spec.vu_specnext 148#define v_fifoinfo v_un.vu_fifoinfo 149 150#define VN_POLLEVENT(vp, events) \ 151 do { \ 152 if ((vp)->v_pollinfo.vpi_events & (events)) \ 153 vn_pollevent((vp), (events)); \ 154 } while (0) 155 156/* 157 * Vnode flags. 158 */ 159#define VROOT 0x00001 /* root of its file system */ 160#define VTEXT 0x00002 /* vnode is a pure text prototype */ 161#define VSYSTEM 0x00004 /* vnode being used by kernel */ 162#define VISTTY 0x00008 /* vnode represents a tty */ 163#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 164#define VXWANT 0x00200 /* thread is waiting for vnode */ 165#define VBWAIT 0x00400 /* waiting for output to complete */ 166#define VNOSYNC 0x01000 /* unlinked, stop syncing */ 167/* open for business 0x01000 */ 168#define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 169#define VCOPYONWRITE 0x04000 /* vnode is doing copy-on-write */ 170#define VAGE 0x08000 /* Insert vnode at head of free list */ 171#define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 172#define VOWANT 0x20000 /* a thread is waiting for VOLOCK */ 173#define VDOOMED 0x40000 /* This vnode is being recycled */ 174#define VFREE 0x80000 /* This vnode is on the freelist */ 175/* open for business 0x100000 */ 176#define VONWORKLST 0x200000 /* On syncer work-list */ 177#define VMOUNT 0x400000 /* Mount in progress */ 178#define VOBJDIRTY 0x800000 /* object might be dirty */ 179 180/* 181 * Vnode attributes. A field value of VNOVAL represents a field whose value 182 * is unavailable (getattr) or which is not to be changed (setattr). 183 */ 184struct vattr { 185 enum vtype va_type; /* vnode type (for create) */ 186 u_short va_mode; /* files access mode and type */ 187 short va_nlink; /* number of references to file */ 188 uid_t va_uid; /* owner user id */ 189 gid_t va_gid; /* owner group id */ 190 udev_t va_fsid; /* file system id */ 191 long va_fileid; /* file id */ 192 u_quad_t va_size; /* file size in bytes */ 193 long va_blocksize; /* blocksize preferred for i/o */ 194 struct timespec va_atime; /* time of last access */ 195 struct timespec va_mtime; /* time of last modification */ 196 struct timespec va_ctime; /* time file changed */ 197 u_long va_gen; /* generation number of file */ 198 u_long va_flags; /* flags defined for file */ 199 udev_t va_rdev; /* device the special file represents */ 200 u_quad_t va_bytes; /* bytes of disk space held by file */ 201 u_quad_t va_filerev; /* file modification number */ 202 u_int va_vaflags; /* operations flags, see below */ 203 long va_spare; /* remain quad aligned */ 204}; 205 206/* 207 * Flags for va_vaflags. 208 */ 209#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 210#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 211 212/* 213 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 214 * help with write clustering) 215 */ 216#define IO_UNIT 0x01 /* do I/O as atomic unit */ 217#define IO_APPEND 0x02 /* append write to end */ 218#define IO_SYNC 0x04 /* do I/O synchronously */ 219#define IO_NODELOCKED 0x08 /* underlying node already locked */ 220#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 221#define IO_VMIO 0x20 /* data already in VMIO space */ 222#define IO_INVAL 0x40 /* invalidate after I/O */ 223#define IO_ASYNC 0x80 /* bawrite rather then bdwrite */ 224#define IO_DIRECT 0x100 /* attempt to bypass buffer cache */ 225#define IO_NOWDRAIN 0x200 /* do not block on wdrain */ 226 227/* 228 * Modes. Some values same as Ixxx entries from inode.h for now. 229 */ 230#define VADMIN 010000 /* permission to administer vnode */ 231#define VSUID 004000 /* set user id on execution */ 232#define VSGID 002000 /* set group id on execution */ 233#define VSVTX 001000 /* save swapped text even after use */ 234#define VREAD 000400 /* read, write, execute permissions */ 235#define VWRITE 000200 236#define VEXEC 000100 237 238/* 239 * Token indicating no attribute value yet assigned. 240 */ 241#define VNOVAL (-1) 242 243/* 244 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 245 */ 246#define VLKTIMEOUT (hz / 20 + 1) 247 248#ifdef _KERNEL 249 250#ifdef MALLOC_DECLARE 251MALLOC_DECLARE(M_VNODE); 252#endif 253 254/* 255 * Convert between vnode types and inode formats (since POSIX.1 256 * defines mode word of stat structure in terms of inode formats). 257 */ 258extern enum vtype iftovt_tab[]; 259extern int vttoif_tab[]; 260#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 261#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 262#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 263 264/* 265 * Flags to various vnode functions. 266 */ 267#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 268#define FORCECLOSE 0x0002 /* vflush: force file closure */ 269#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 270#define DOCLOSE 0x0008 /* vclean: close active files */ 271#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 272#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 273#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ 274#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */ 275#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */ 276 277#define VREF(vp) vref(vp) 278 279 280#ifdef DIAGNOSTIC 281#define VATTR_NULL(vap) vattr_null(vap) 282#else 283#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 284#endif /* DIAGNOSTIC */ 285 286#define NULLVP ((struct vnode *)NULL) 287 288#define VNODEOP_SET(f) \ 289 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 290 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 291 292/* 293 * Global vnode data. 294 */ 295extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 296extern int desiredvnodes; /* number of vnodes desired */ 297extern struct vm_zone *namei_zone; 298extern int prtactive; /* nonzero to call vprint() */ 299extern struct vattr va_null; /* predefined null vattr structure */ 300extern int vfs_ioopt; 301 302/* 303 * Macro/function to check for client cache inconsistency w.r.t. leasing. 304 */ 305#define LEASE_READ 0x1 /* Check lease for readers */ 306#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 307 308 309extern void (*lease_updatetime) __P((int deltat)); 310 311#define VSHOULDFREE(vp) \ 312 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 313 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 314 (!(vp)->v_object || \ 315 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 316 317#define VMIGHTFREE(vp) \ 318 (!((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) && \ 319 LIST_EMPTY(&(vp)->v_cache_src) && !(vp)->v_usecount) 320 321#define VSHOULDBUSY(vp) \ 322 (((vp)->v_flag & VFREE) && \ 323 ((vp)->v_holdcnt || (vp)->v_usecount)) 324 325#define VI_LOCK(vp) mtx_lock(&(vp)->v_interlock) 326#define VI_TRYLOCK(vp) mtx_trylock(&(vp)->v_interlock) 327#define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock) 328 329#endif /* _KERNEL */ 330 331 332/* 333 * Mods for extensibility. 334 */ 335 336/* 337 * Flags for vdesc_flags: 338 */ 339#define VDESC_MAX_VPS 16 340/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 341#define VDESC_VP0_WILLRELE 0x0001 342#define VDESC_VP1_WILLRELE 0x0002 343#define VDESC_VP2_WILLRELE 0x0004 344#define VDESC_VP3_WILLRELE 0x0008 345#define VDESC_NOMAP_VPP 0x0100 346#define VDESC_VPP_WILLRELE 0x0200 347 348/* 349 * VDESC_NO_OFFSET is used to identify the end of the offset list 350 * and in places where no such field exists. 351 */ 352#define VDESC_NO_OFFSET -1 353 354/* 355 * This structure describes the vnode operation taking place. 356 */ 357struct vnodeop_desc { 358 int vdesc_offset; /* offset in vector,first for speed */ 359 char *vdesc_name; /* a readable name for debugging */ 360 int vdesc_flags; /* VDESC_* flags */ 361 362 /* 363 * These ops are used by bypass routines to map and locate arguments. 364 * Creds and procs are not needed in bypass routines, but sometimes 365 * they are useful to (for example) transport layers. 366 * Nameidata is useful because it has a cred in it. 367 */ 368 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 369 int vdesc_vpp_offset; /* return vpp location */ 370 int vdesc_cred_offset; /* cred location, if any */ 371 int vdesc_thread_offset; /* thread location, if any */ 372 int vdesc_componentname_offset; /* if any */ 373 /* 374 * Finally, we've got a list of private data (about each operation) 375 * for each transport layer. (Support to manage this list is not 376 * yet part of BSD.) 377 */ 378 caddr_t *vdesc_transports; 379}; 380 381#ifdef _KERNEL 382/* 383 * A list of all the operation descs. 384 */ 385extern struct vnodeop_desc *vnodeop_descs[]; 386 387/* 388 * Interlock for scanning list of vnodes attached to a mountpoint 389 */ 390extern struct mtx mntvnode_mtx; 391 392/* 393 * This macro is very helpful in defining those offsets in the vdesc struct. 394 * 395 * This is stolen from X11R4. I ignored all the fancy stuff for 396 * Crays, so if you decide to port this to such a serious machine, 397 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 398 */ 399#define VOPARG_OFFSET(p_type,field) \ 400 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 401#define VOPARG_OFFSETOF(s_type,field) \ 402 VOPARG_OFFSET(s_type*,field) 403#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 404 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 405 406 407/* 408 * This structure is used to configure the new vnodeops vector. 409 */ 410struct vnodeopv_entry_desc { 411 struct vnodeop_desc *opve_op; /* which operation this is */ 412 vop_t *opve_impl; /* code implementing this operation */ 413}; 414struct vnodeopv_desc { 415 /* ptr to the ptr to the vector where op should go */ 416 vop_t ***opv_desc_vector_p; 417 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 418}; 419 420/* 421 * A generic structure. 422 * This can be used by bypass routines to identify generic arguments. 423 */ 424struct vop_generic_args { 425 struct vnodeop_desc *a_desc; 426 /* other random data follows, presumably */ 427}; 428 429 430#ifdef DEBUG_VFS_LOCKS 431/* 432 * Macros to aid in tracing VFS locking problems. Not totally 433 * reliable since if the thread sleeps between changing the lock 434 * state and checking it with the assert, some other thread could 435 * change the state. They are good enough for debugging a single 436 * filesystem using a single-threaded test. I find that 'cvs co src' 437 * is a pretty good test. 438 */ 439 440/* 441 * [dfr] Kludge until I get around to fixing all the vfs locking. 442 */ 443#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 444 || (vp)->v_tag == VT_NFS \ 445 || (vp)->v_tag == VT_LFS \ 446 || (vp)->v_tag == VT_ISOFS \ 447 || (vp)->v_tag == VT_MSDOSFS \ 448 || (vp)->v_tag == VT_DEVFS) 449 450#define ASSERT_VOP_LOCKED(vp, str) \ 451do { \ 452 struct vnode *_vp = (vp); \ 453 \ 454 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 455 panic("%s: %p is not locked but should be", str, _vp); \ 456} while (0) 457 458#define ASSERT_VOP_UNLOCKED(vp, str) \ 459do { \ 460 struct vnode *_vp = (vp); \ 461 int lockstate; \ 462 \ 463 if (_vp && IS_LOCKING_VFS(_vp)) { \ 464 lockstate = VOP_ISLOCKED(_vp, curthread); \ 465 if (lockstate == LK_EXCLUSIVE) \ 466 panic("%s: %p is locked but should not be", \ 467 str, _vp); \ 468 } \ 469} while (0) 470 471#define ASSERT_VOP_ELOCKED(vp, str) \ 472do { \ 473 struct vnode *_vp = (vp); \ 474 \ 475 if (_vp && IS_LOCKING_VFS(_vp) && \ 476 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \ 477 panic("%s: %p is not exclusive locked but should be", \ 478 str, _vp); \ 479} while (0) 480 481#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 482do { \ 483 struct vnode *_vp = (vp); \ 484 \ 485 if (_vp && IS_LOCKING_VFS(_vp) && \ 486 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \ 487 panic("%s: %p is not exclusive locked by another thread", \ 488 str, _vp); \ 489} while (0) 490 491#define ASSERT_VOP_SLOCKED(vp, str) \ 492do { \ 493 struct vnode *_vp = (vp); \ 494 \ 495 if (_vp && IS_LOCKING_VFS(_vp) && \ 496 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 497 panic("%s: %p is not locked shared but should be", \ 498 str, _vp); \ 499} while (0) 500 501#else 502 503#define ASSERT_VOP_LOCKED(vp, str) 504#define ASSERT_VOP_UNLOCKED(vp, str) 505 506#endif 507 508/* 509 * VOCALL calls an op given an ops vector. We break it out because BSD's 510 * vclean changes the ops vector and then wants to call ops with the old 511 * vector. 512 */ 513#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 514 515/* 516 * This call works for vnodes in the kernel. 517 */ 518#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 519#define VDESC(OP) (& __CONCAT(OP,_desc)) 520#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 521 522/* 523 * VMIO support inline 524 */ 525 526extern int vmiodirenable; 527 528static __inline int 529vn_canvmio(struct vnode *vp) 530{ 531 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 532 return(TRUE); 533 return(FALSE); 534} 535 536/* 537 * Finally, include the default set of vnode operations. 538 */ 539#include "vnode_if.h" 540 541/* 542 * Public vnode manipulation functions. 543 */ 544struct componentname; 545struct file; 546struct mount; 547struct nameidata; 548struct ostat; 549struct thread; 550struct proc; 551struct stat; 552struct nstat; 553struct ucred; 554struct uio; 555struct vattr; 556struct vnode; 557 558extern int (*lease_check_hook) __P((struct vop_lease_args *)); 559 560struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 561int bdevvp __P((dev_t dev, struct vnode **vpp)); 562/* cache_* may belong in namei.h. */ 563void cache_enter __P((struct vnode *dvp, struct vnode *vp, 564 struct componentname *cnp)); 565int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 566 struct componentname *cnp)); 567void cache_purge __P((struct vnode *vp)); 568void cache_purgevfs __P((struct mount *mp)); 569int cache_leaf_test __P((struct vnode *vp)); 570void cvtstat __P((struct stat *st, struct ostat *ost)); 571void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 572int getnewvnode __P((enum vtagtype tag, 573 struct mount *mp, vop_t **vops, struct vnode **vpp)); 574int lease_check __P((struct vop_lease_args *ap)); 575int spec_vnoperate __P((struct vop_generic_args *)); 576int speedup_syncer __P((void)); 577#define textvp_fullpath(p, rb, rfb) \ 578 vn_fullpath(&(p)->p_thread, (p)->p_textvp, rb, rfb) 579int vn_fullpath __P((struct thread *td, struct vnode *vn, 580 char **retbuf, char **freebuf)); 581int vaccess __P((enum vtype type, mode_t file_mode, uid_t uid, gid_t gid, 582 mode_t acc_mode, struct ucred *cred, int *privused)); 583int vaccess_acl_posix1e __P((enum vtype type, uid_t file_uid, 584 gid_t file_gid, struct acl *acl, mode_t acc_mode, 585 struct ucred *cred, int *privused)); 586void vattr_null __P((struct vattr *vap)); 587int vcount __P((struct vnode *vp)); 588void vdrop __P((struct vnode *)); 589int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 590void vfs_add_vnodeops __P((const void *)); 591void vfs_rm_vnodeops __P((const void *)); 592int vflush __P((struct mount *mp, int rootrefs, int flags)); 593int vget __P((struct vnode *vp, int lockflag, struct thread *td)); 594void vgone __P((struct vnode *vp)); 595void vgonel __P((struct vnode *vp, struct thread *td)); 596void vhold __P((struct vnode *)); 597int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 598 struct thread *td, int slpflag, int slptimeo)); 599int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct thread *td, 600 off_t length, int blksize)); 601void vprint __P((char *label, struct vnode *vp)); 602int vrecycle __P((struct vnode *vp, struct mtx *inter_lkp, 603 struct thread *td)); 604int vn_close __P((struct vnode *vp, 605 int flags, struct ucred *cred, struct thread *td)); 606void vn_finished_write __P((struct mount *mp)); 607int vn_isdisk __P((struct vnode *vp, int *errp)); 608int vn_lock __P((struct vnode *vp, int flags, struct thread *td)); 609#ifdef DEBUG_LOCKS 610int debug_vn_lock __P((struct vnode *vp, int flags, struct thread *p, 611 const char *filename, int line)); 612#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 613#endif 614int vn_mkdir __P((char *path, int mode, enum uio_seg segflg, struct thread *td)); 615int vn_open __P((struct nameidata *ndp, int *flagp, int cmode)); 616int vn_open_cred __P((struct nameidata *ndp, int *flagp, int cmode, 617 struct ucred *cred)); 618void vn_pollevent __P((struct vnode *vp, int events)); 619void vn_pollgone __P((struct vnode *vp)); 620int vn_pollrecord __P((struct vnode *vp, struct thread *p, int events)); 621int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 622 int len, off_t offset, enum uio_seg segflg, int ioflg, 623 struct ucred *cred, int *aresid, struct thread *td)); 624int vn_rdwr_inchunks __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 625 int len, off_t offset, enum uio_seg segflg, int ioflg, 626 struct ucred *cred, int *aresid, struct thread *td)); 627int vn_stat __P((struct vnode *vp, struct stat *sb, struct thread *td)); 628int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags)); 629dev_t vn_todev __P((struct vnode *vp)); 630int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp, 631 int flags)); 632int vn_writechk __P((struct vnode *vp)); 633int vn_extattr_get __P((struct vnode *vp, int ioflg, int attrnamespace, 634 const char *attrname, int *buflen, char *buf, struct thread *td)); 635int vn_extattr_set __P((struct vnode *vp, int ioflg, int attrnamespace, 636 const char *attrname, int buflen, char *buf, struct thread *td)); 637int vn_extattr_rm(struct vnode *vp, int ioflg, int attrnamespace, 638 const char *attrname, struct thread *td); 639int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 640int vfs_object_create __P((struct vnode *vp, struct thread *td, 641 struct ucred *cred)); 642void vfs_timestamp __P((struct timespec *)); 643void vfs_write_resume __P((struct mount *mp)); 644void vfs_write_suspend __P((struct mount *mp)); 645int vop_stdbmap __P((struct vop_bmap_args *)); 646int vop_stdgetwritemount __P((struct vop_getwritemount_args *)); 647int vop_stdgetpages __P((struct vop_getpages_args *)); 648int vop_stdinactive __P((struct vop_inactive_args *)); 649int vop_stdislocked __P((struct vop_islocked_args *)); 650int vop_stdlock __P((struct vop_lock_args *)); 651int vop_stdputpages __P((struct vop_putpages_args *)); 652int vop_stdunlock __P((struct vop_unlock_args *)); 653int vop_noislocked __P((struct vop_islocked_args *)); 654int vop_nolock __P((struct vop_lock_args *)); 655int vop_nopoll __P((struct vop_poll_args *)); 656int vop_nounlock __P((struct vop_unlock_args *)); 657int vop_stdpathconf __P((struct vop_pathconf_args *)); 658int vop_stdpoll __P((struct vop_poll_args *)); 659int vop_revoke __P((struct vop_revoke_args *)); 660int vop_sharedlock __P((struct vop_lock_args *)); 661int vop_eopnotsupp __P((struct vop_generic_args *ap)); 662int vop_ebadf __P((struct vop_generic_args *ap)); 663int vop_einval __P((struct vop_generic_args *ap)); 664int vop_enotty __P((struct vop_generic_args *ap)); 665int vop_defaultop __P((struct vop_generic_args *ap)); 666int vop_null __P((struct vop_generic_args *ap)); 667int vop_panic __P((struct vop_generic_args *ap)); 668int vop_stdcreatevobject __P((struct vop_createvobject_args *ap)); 669int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap)); 670int vop_stdgetvobject __P((struct vop_getvobject_args *ap)); 671 672void vfree __P((struct vnode *)); 673void vput __P((struct vnode *vp)); 674void vrele __P((struct vnode *vp)); 675void vref __P((struct vnode *vp)); 676void vbusy __P((struct vnode *vp)); 677 678extern vop_t **default_vnodeop_p; 679extern vop_t **spec_vnodeop_p; 680extern vop_t **dead_vnodeop_p; 681 682#endif /* _KERNEL */ 683 684#endif /* !_SYS_VNODE_H_ */ 685