vnode.h revision 85287
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 85287 2001-10-21 15:52:51Z des $ 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 LIST_ENTRY(vnode) v_mntvnodes; /* 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 */ 178 179/* 180 * Vnode attributes. A field value of VNOVAL represents a field whose value 181 * is unavailable (getattr) or which is not to be changed (setattr). 182 */ 183struct vattr { 184 enum vtype va_type; /* vnode type (for create) */ 185 u_short va_mode; /* files access mode and type */ 186 short va_nlink; /* number of references to file */ 187 uid_t va_uid; /* owner user id */ 188 gid_t va_gid; /* owner group id */ 189 udev_t va_fsid; /* file system id */ 190 long va_fileid; /* file id */ 191 u_quad_t va_size; /* file size in bytes */ 192 long va_blocksize; /* blocksize preferred for i/o */ 193 struct timespec va_atime; /* time of last access */ 194 struct timespec va_mtime; /* time of last modification */ 195 struct timespec va_ctime; /* time file changed */ 196 u_long va_gen; /* generation number of file */ 197 u_long va_flags; /* flags defined for file */ 198 udev_t va_rdev; /* device the special file represents */ 199 u_quad_t va_bytes; /* bytes of disk space held by file */ 200 u_quad_t va_filerev; /* file modification number */ 201 u_int va_vaflags; /* operations flags, see below */ 202 long va_spare; /* remain quad aligned */ 203}; 204 205/* 206 * Flags for va_vaflags. 207 */ 208#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 209#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 210 211/* 212 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 213 * help with write clustering) 214 */ 215#define IO_UNIT 0x01 /* do I/O as atomic unit */ 216#define IO_APPEND 0x02 /* append write to end */ 217#define IO_SYNC 0x04 /* do I/O synchronously */ 218#define IO_NODELOCKED 0x08 /* underlying node already locked */ 219#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 220#define IO_VMIO 0x20 /* data already in VMIO space */ 221#define IO_INVAL 0x40 /* invalidate after I/O */ 222#define IO_ASYNC 0x80 /* bawrite rather then bdwrite */ 223#define IO_DIRECT 0x100 /* attempt to bypass buffer cache */ 224 225/* 226 * Modes. Some values same as Ixxx entries from inode.h for now. 227 */ 228#define VADMIN 010000 /* permission to administer vnode */ 229#define VSUID 004000 /* set user id on execution */ 230#define VSGID 002000 /* set group id on execution */ 231#define VSVTX 001000 /* save swapped text even after use */ 232#define VREAD 000400 /* read, write, execute permissions */ 233#define VWRITE 000200 234#define VEXEC 000100 235 236/* 237 * Token indicating no attribute value yet assigned. 238 */ 239#define VNOVAL (-1) 240 241#ifdef _KERNEL 242 243#ifdef MALLOC_DECLARE 244MALLOC_DECLARE(M_VNODE); 245#endif 246 247/* 248 * Convert between vnode types and inode formats (since POSIX.1 249 * defines mode word of stat structure in terms of inode formats). 250 */ 251extern enum vtype iftovt_tab[]; 252extern int vttoif_tab[]; 253#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 254#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 255#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 256 257/* 258 * Flags to various vnode functions. 259 */ 260#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 261#define FORCECLOSE 0x0002 /* vflush: force file closure */ 262#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 263#define DOCLOSE 0x0008 /* vclean: close active files */ 264#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 265#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 266#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ 267#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */ 268#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */ 269 270#define VREF(vp) vref(vp) 271 272 273#ifdef DIAGNOSTIC 274#define VATTR_NULL(vap) vattr_null(vap) 275#else 276#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 277#endif /* DIAGNOSTIC */ 278 279#define NULLVP ((struct vnode *)NULL) 280 281#define VNODEOP_SET(f) \ 282 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 283 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 284 285/* 286 * Global vnode data. 287 */ 288extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 289extern int desiredvnodes; /* number of vnodes desired */ 290extern time_t syncdelay; /* max time to delay syncing data */ 291extern time_t filedelay; /* time to delay syncing files */ 292extern time_t dirdelay; /* time to delay syncing directories */ 293extern time_t metadelay; /* time to delay syncing metadata */ 294extern struct vm_zone *namei_zone; 295extern int prtactive; /* nonzero to call vprint() */ 296extern struct vattr va_null; /* predefined null vattr structure */ 297extern int vfs_ioopt; 298 299/* 300 * Macro/function to check for client cache inconsistency w.r.t. leasing. 301 */ 302#define LEASE_READ 0x1 /* Check lease for readers */ 303#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 304 305 306extern void (*lease_updatetime) __P((int deltat)); 307 308#define VSHOULDFREE(vp) \ 309 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 310 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 311 (!(vp)->v_object || \ 312 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 313 314#define VSHOULDBUSY(vp) \ 315 (((vp)->v_flag & VFREE) && \ 316 ((vp)->v_holdcnt || (vp)->v_usecount)) 317 318#define VI_LOCK(vp) mtx_lock(&(vp)->v_interlock) 319#define VI_TRYLOCK(vp) mtx_trylock(&(vp)->v_interlock) 320#define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock) 321 322#endif /* _KERNEL */ 323 324 325/* 326 * Mods for extensibility. 327 */ 328 329/* 330 * Flags for vdesc_flags: 331 */ 332#define VDESC_MAX_VPS 16 333/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 334#define VDESC_VP0_WILLRELE 0x0001 335#define VDESC_VP1_WILLRELE 0x0002 336#define VDESC_VP2_WILLRELE 0x0004 337#define VDESC_VP3_WILLRELE 0x0008 338#define VDESC_NOMAP_VPP 0x0100 339#define VDESC_VPP_WILLRELE 0x0200 340 341/* 342 * VDESC_NO_OFFSET is used to identify the end of the offset list 343 * and in places where no such field exists. 344 */ 345#define VDESC_NO_OFFSET -1 346 347/* 348 * This structure describes the vnode operation taking place. 349 */ 350struct vnodeop_desc { 351 int vdesc_offset; /* offset in vector,first for speed */ 352 char *vdesc_name; /* a readable name for debugging */ 353 int vdesc_flags; /* VDESC_* flags */ 354 355 /* 356 * These ops are used by bypass routines to map and locate arguments. 357 * Creds and procs are not needed in bypass routines, but sometimes 358 * they are useful to (for example) transport layers. 359 * Nameidata is useful because it has a cred in it. 360 */ 361 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 362 int vdesc_vpp_offset; /* return vpp location */ 363 int vdesc_cred_offset; /* cred location, if any */ 364 int vdesc_thread_offset; /* thread location, if any */ 365 int vdesc_componentname_offset; /* if any */ 366 /* 367 * Finally, we've got a list of private data (about each operation) 368 * for each transport layer. (Support to manage this list is not 369 * yet part of BSD.) 370 */ 371 caddr_t *vdesc_transports; 372}; 373 374#ifdef _KERNEL 375/* 376 * A list of all the operation descs. 377 */ 378extern struct vnodeop_desc *vnodeop_descs[]; 379 380/* 381 * Interlock for scanning list of vnodes attached to a mountpoint 382 */ 383extern struct mtx mntvnode_mtx; 384 385/* 386 * This macro is very helpful in defining those offsets in the vdesc struct. 387 * 388 * This is stolen from X11R4. I ignored all the fancy stuff for 389 * Crays, so if you decide to port this to such a serious machine, 390 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 391 */ 392#define VOPARG_OFFSET(p_type,field) \ 393 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 394#define VOPARG_OFFSETOF(s_type,field) \ 395 VOPARG_OFFSET(s_type*,field) 396#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 397 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 398 399 400/* 401 * This structure is used to configure the new vnodeops vector. 402 */ 403struct vnodeopv_entry_desc { 404 struct vnodeop_desc *opve_op; /* which operation this is */ 405 vop_t *opve_impl; /* code implementing this operation */ 406}; 407struct vnodeopv_desc { 408 /* ptr to the ptr to the vector where op should go */ 409 vop_t ***opv_desc_vector_p; 410 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 411}; 412 413/* 414 * A generic structure. 415 * This can be used by bypass routines to identify generic arguments. 416 */ 417struct vop_generic_args { 418 struct vnodeop_desc *a_desc; 419 /* other random data follows, presumably */ 420}; 421 422 423#ifdef DEBUG_VFS_LOCKS 424/* 425 * Macros to aid in tracing VFS locking problems. Not totally 426 * reliable since if the thread sleeps between changing the lock 427 * state and checking it with the assert, some other thread could 428 * change the state. They are good enough for debugging a single 429 * filesystem using a single-threaded test. I find that 'cvs co src' 430 * is a pretty good test. 431 */ 432 433/* 434 * [dfr] Kludge until I get around to fixing all the vfs locking. 435 */ 436#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 437 || (vp)->v_tag == VT_NFS \ 438 || (vp)->v_tag == VT_LFS \ 439 || (vp)->v_tag == VT_ISOFS \ 440 || (vp)->v_tag == VT_MSDOSFS \ 441 || (vp)->v_tag == VT_DEVFS) 442 443#define ASSERT_VOP_LOCKED(vp, str) \ 444do { \ 445 struct vnode *_vp = (vp); \ 446 \ 447 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 448 panic("%s: %p is not locked but should be", str, _vp); \ 449} while (0) 450 451#define ASSERT_VOP_UNLOCKED(vp, str) \ 452do { \ 453 struct vnode *_vp = (vp); \ 454 int lockstate; \ 455 \ 456 if (_vp && IS_LOCKING_VFS(_vp)) { \ 457 lockstate = VOP_ISLOCKED(_vp, curthread); \ 458 if (lockstate == LK_EXCLUSIVE) \ 459 panic("%s: %p is locked but should not be", \ 460 str, _vp); \ 461 } \ 462} while (0) 463 464#define ASSERT_VOP_ELOCKED(vp, str) \ 465do { \ 466 struct vnode *_vp = (vp); \ 467 \ 468 if (_vp && IS_LOCKING_VFS(_vp) && \ 469 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \ 470 panic("%s: %p is not exclusive locked but should be", \ 471 str, _vp); \ 472} while (0) 473 474#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 475do { \ 476 struct vnode *_vp = (vp); \ 477 \ 478 if (_vp && IS_LOCKING_VFS(_vp) && \ 479 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \ 480 panic("%s: %p is not exclusive locked by another thread", \ 481 str, _vp); \ 482} while (0) 483 484#define ASSERT_VOP_SLOCKED(vp, str) \ 485do { \ 486 struct vnode *_vp = (vp); \ 487 \ 488 if (_vp && IS_LOCKING_VFS(_vp) && \ 489 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 490 panic("%s: %p is not locked shared but should be", \ 491 str, _vp); \ 492} while (0) 493 494#else 495 496#define ASSERT_VOP_LOCKED(vp, str) 497#define ASSERT_VOP_UNLOCKED(vp, str) 498 499#endif 500 501/* 502 * VOCALL calls an op given an ops vector. We break it out because BSD's 503 * vclean changes the ops vector and then wants to call ops with the old 504 * vector. 505 */ 506#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 507 508/* 509 * This call works for vnodes in the kernel. 510 */ 511#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 512#define VDESC(OP) (& __CONCAT(OP,_desc)) 513#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 514 515/* 516 * VMIO support inline 517 */ 518 519extern int vmiodirenable; 520 521static __inline int 522vn_canvmio(struct vnode *vp) 523{ 524 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 525 return(TRUE); 526 return(FALSE); 527} 528 529/* 530 * Finally, include the default set of vnode operations. 531 */ 532#include "vnode_if.h" 533 534/* 535 * Public vnode manipulation functions. 536 */ 537struct componentname; 538struct file; 539struct mount; 540struct nameidata; 541struct ostat; 542struct thread; 543struct proc; 544struct stat; 545struct nstat; 546struct ucred; 547struct uio; 548struct vattr; 549struct vnode; 550 551extern int (*lease_check_hook) __P((struct vop_lease_args *)); 552 553struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 554int bdevvp __P((dev_t dev, struct vnode **vpp)); 555/* cache_* may belong in namei.h. */ 556void cache_enter __P((struct vnode *dvp, struct vnode *vp, 557 struct componentname *cnp)); 558int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 559 struct componentname *cnp)); 560void cache_purge __P((struct vnode *vp)); 561void cache_purgevfs __P((struct mount *mp)); 562int cache_leaf_test __P((struct vnode *vp)); 563void cvtstat __P((struct stat *st, struct ostat *ost)); 564void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 565int getnewvnode __P((enum vtagtype tag, 566 struct mount *mp, vop_t **vops, struct vnode **vpp)); 567int lease_check __P((struct vop_lease_args *ap)); 568int spec_vnoperate __P((struct vop_generic_args *)); 569int speedup_syncer __P((void)); 570#define textvp_fullpath(p, rb, rfb) \ 571 vn_fullpath(&(p)->p_thread, (p)->p_textvp, rb, rfb) 572int vn_fullpath __P((struct thread *td, struct vnode *vn, 573 char **retbuf, char **freebuf)); 574int vaccess __P((enum vtype type, mode_t file_mode, uid_t uid, gid_t gid, 575 mode_t acc_mode, struct ucred *cred, int *privused)); 576int vaccess_acl_posix1e __P((enum vtype type, uid_t file_uid, 577 gid_t file_gid, struct acl *acl, mode_t acc_mode, 578 struct ucred *cred, int *privused)); 579void vattr_null __P((struct vattr *vap)); 580int vcount __P((struct vnode *vp)); 581void vdrop __P((struct vnode *)); 582int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 583void vfs_add_vnodeops __P((const void *)); 584void vfs_rm_vnodeops __P((const void *)); 585int vflush __P((struct mount *mp, int rootrefs, int flags)); 586int vget __P((struct vnode *vp, int lockflag, struct thread *td)); 587void vgone __P((struct vnode *vp)); 588void vgonel __P((struct vnode *vp, struct thread *td)); 589void vhold __P((struct vnode *)); 590int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 591 struct thread *td, int slpflag, int slptimeo)); 592int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct thread *td, 593 off_t length, int blksize)); 594void vprint __P((char *label, struct vnode *vp)); 595int vrecycle __P((struct vnode *vp, struct mtx *inter_lkp, 596 struct thread *td)); 597int vn_close __P((struct vnode *vp, 598 int flags, struct ucred *cred, struct thread *td)); 599void vn_finished_write __P((struct mount *mp)); 600int vn_isdisk __P((struct vnode *vp, int *errp)); 601int vn_lock __P((struct vnode *vp, int flags, struct thread *td)); 602#ifdef DEBUG_LOCKS 603int debug_vn_lock __P((struct vnode *vp, int flags, struct thread *p, 604 const char *filename, int line)); 605#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 606#endif 607int vn_mkdir __P((char *path, int mode, enum uio_seg segflg, struct thread *td)); 608int vn_open __P((struct nameidata *ndp, int *flagp, int cmode)); 609void vn_pollevent __P((struct vnode *vp, int events)); 610void vn_pollgone __P((struct vnode *vp)); 611int vn_pollrecord __P((struct vnode *vp, struct thread *p, int events)); 612int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 613 int len, off_t offset, enum uio_seg segflg, int ioflg, 614 struct ucred *cred, int *aresid, struct thread *td)); 615int vn_rdwr_inchunks __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 616 int len, off_t offset, enum uio_seg segflg, int ioflg, 617 struct ucred *cred, int *aresid, struct thread *td)); 618int vn_stat __P((struct vnode *vp, struct stat *sb, struct thread *td)); 619int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags)); 620dev_t vn_todev __P((struct vnode *vp)); 621int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp, 622 int flags)); 623int vn_writechk __P((struct vnode *vp)); 624int vn_extattr_get __P((struct vnode *vp, int ioflg, int attrnamespace, 625 const char *attrname, int *buflen, char *buf, struct thread *td)); 626int vn_extattr_set __P((struct vnode *vp, int ioflg, int attrnamespace, 627 const char *attrname, int buflen, char *buf, struct thread *td)); 628int vn_extattr_rm(struct vnode *vp, int ioflg, int attrnamespace, 629 const char *attrname, struct thread *td); 630int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 631int vfs_object_create __P((struct vnode *vp, struct thread *td, 632 struct ucred *cred)); 633void vfs_timestamp __P((struct timespec *)); 634void vfs_write_resume __P((struct mount *mp)); 635void vfs_write_suspend __P((struct mount *mp)); 636int vop_stdbmap __P((struct vop_bmap_args *)); 637int vop_stdgetwritemount __P((struct vop_getwritemount_args *)); 638int vop_stdgetpages __P((struct vop_getpages_args *)); 639int vop_stdinactive __P((struct vop_inactive_args *)); 640int vop_stdislocked __P((struct vop_islocked_args *)); 641int vop_stdlock __P((struct vop_lock_args *)); 642int vop_stdputpages __P((struct vop_putpages_args *)); 643int vop_stdunlock __P((struct vop_unlock_args *)); 644int vop_noislocked __P((struct vop_islocked_args *)); 645int vop_nolock __P((struct vop_lock_args *)); 646int vop_nopoll __P((struct vop_poll_args *)); 647int vop_nounlock __P((struct vop_unlock_args *)); 648int vop_stdpathconf __P((struct vop_pathconf_args *)); 649int vop_stdpoll __P((struct vop_poll_args *)); 650int vop_revoke __P((struct vop_revoke_args *)); 651int vop_sharedlock __P((struct vop_lock_args *)); 652int vop_eopnotsupp __P((struct vop_generic_args *ap)); 653int vop_ebadf __P((struct vop_generic_args *ap)); 654int vop_einval __P((struct vop_generic_args *ap)); 655int vop_enotty __P((struct vop_generic_args *ap)); 656int vop_defaultop __P((struct vop_generic_args *ap)); 657int vop_null __P((struct vop_generic_args *ap)); 658int vop_panic __P((struct vop_generic_args *ap)); 659int vop_stdcreatevobject __P((struct vop_createvobject_args *ap)); 660int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap)); 661int vop_stdgetvobject __P((struct vop_getvobject_args *ap)); 662 663void vfree __P((struct vnode *)); 664void vput __P((struct vnode *vp)); 665void vrele __P((struct vnode *vp)); 666void vref __P((struct vnode *vp)); 667void vbusy __P((struct vnode *vp)); 668 669extern vop_t **default_vnodeop_p; 670extern vop_t **spec_vnodeop_p; 671extern vop_t **dead_vnodeop_p; 672 673#endif /* _KERNEL */ 674 675#endif /* !_SYS_VNODE_H_ */ 676