vnode.h revision 75580
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 75580 2001-04-17 08:56:39Z phk $ 35 */ 36 37#ifndef _SYS_VNODE_H_ 38#define _SYS_VNODE_H_ 39 40#include <sys/lock.h> 41#include <sys/mutex.h> 42#include <sys/queue.h> 43#include <sys/selinfo.h> 44#include <sys/uio.h> 45#include <sys/acl.h> 46 47/* 48 * The vnode is the focus of all file activity in UNIX. There is a 49 * unique vnode allocated for each active file, each current directory, 50 * each mounted-on file, text file, and the root. 51 */ 52 53/* 54 * Vnode types. VNON means no type. 55 */ 56enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 57 58/* 59 * Vnode tag types. 60 * These are for the benefit of external programs only (e.g., pstat) 61 * and should NEVER be inspected by the kernel. 62 */ 63enum vtagtype { 64 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 65 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 66 VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 67 VT_HPFS, VT_NWFS, VT_PSEUDOFS, VT_SMBFS 68}; 69 70/* 71 * Each underlying filesystem allocates its own private area and hangs 72 * it from v_data. If non-null, this area is freed in getnewvnode(). 73 */ 74TAILQ_HEAD(buflists, buf); 75 76typedef int vop_t __P((void *)); 77struct namecache; 78 79/* 80 * Reading or writing any of these items requires holding the appropriate lock. 81 * v_freelist is locked by the global vnode_free_list mutex. 82 * v_mntvnodes is locked by the global mntvnodes mutex. 83 * v_flag, v_usecount, v_holdcount and v_writecount are 84 * locked by the v_interlock mutex. 85 * v_pollinfo is locked by the lock contained inside it. 86 */ 87struct vnode { 88 u_long v_flag; /* vnode flags (see below) */ 89 int v_usecount; /* reference count of users */ 90 int v_writecount; /* reference count of writers */ 91 int v_holdcnt; /* page & buffer references */ 92 u_long v_id; /* capability identifier */ 93 struct mount *v_mount; /* ptr to vfs we are in */ 94 vop_t **v_op; /* vnode operations vector */ 95 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 96 LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ 97 struct buflists v_cleanblkhd; /* clean blocklist head */ 98 struct buflists v_dirtyblkhd; /* dirty blocklist head */ 99 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 100 long v_numoutput; /* num of writes in progress */ 101 enum vtype v_type; /* vnode type */ 102 union { 103 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 104 struct socket *vu_socket; /* unix ipc (VSOCK) */ 105 struct { 106 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 107 SLIST_ENTRY(vnode) vu_specnext; 108 } vu_spec; 109 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 110 } v_un; 111 struct nqlease *v_lease; /* Soft reference to lease */ 112 daddr_t v_lastw; /* last write (write cluster) */ 113 daddr_t v_cstart; /* start block of cluster */ 114 daddr_t v_lasta; /* last allocation */ 115 int v_clen; /* length of current cluster */ 116 struct vm_object *v_object; /* Place to store VM object */ 117 struct mtx v_interlock; /* lock on usecount and flag */ 118 struct lock v_lock; /* used if fs don't have one */ 119 struct lock *v_vnlock; /* pointer to vnode lock */ 120 enum vtagtype v_tag; /* type of underlying data */ 121 void *v_data; /* private data for fs */ 122 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 123 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 124 struct vnode *v_dd; /* .. vnode */ 125 u_long v_ddid; /* .. capability identifier */ 126 struct { 127 struct mtx vpi_lock; /* lock to protect below */ 128 struct selinfo vpi_selinfo; /* identity of poller(s) */ 129 short vpi_events; /* what they are looking for */ 130 short vpi_revents; /* what has happened */ 131 } v_pollinfo; 132 struct proc *v_vxproc; /* proc owning VXLOCK */ 133#ifdef DEBUG_LOCKS 134 const char *filename; /* Source file doing locking */ 135 int line; /* Line number doing locking */ 136#endif 137}; 138#define v_mountedhere v_un.vu_mountedhere 139#define v_socket v_un.vu_socket 140#define v_rdev v_un.vu_spec.vu_specinfo 141#define v_specnext v_un.vu_spec.vu_specnext 142#define v_fifoinfo v_un.vu_fifoinfo 143 144#define VN_POLLEVENT(vp, events) \ 145 do { \ 146 if ((vp)->v_pollinfo.vpi_events & (events)) \ 147 vn_pollevent((vp), (events)); \ 148 } while (0) 149 150/* 151 * Vnode flags. 152 */ 153#define VROOT 0x00001 /* root of its file system */ 154#define VTEXT 0x00002 /* vnode is a pure text prototype */ 155#define VSYSTEM 0x00004 /* vnode being used by kernel */ 156#define VISTTY 0x00008 /* vnode represents a tty */ 157#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 158#define VXWANT 0x00200 /* process is waiting for vnode */ 159#define VBWAIT 0x00400 /* waiting for output to complete */ 160/* open for business 0x00800 */ 161/* open for business 0x01000 */ 162#define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 163#define VCOPYONWRITE 0x04000 /* vnode is doing copy-on-write */ 164#define VAGE 0x08000 /* Insert vnode at head of free list */ 165#define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 166#define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 167#define VDOOMED 0x40000 /* This vnode is being recycled */ 168#define VFREE 0x80000 /* This vnode is on the freelist */ 169/* open for business 0x100000 */ 170#define VONWORKLST 0x200000 /* On syncer work-list */ 171#define VMOUNT 0x400000 /* Mount in progress */ 172 173/* 174 * Vnode attributes. A field value of VNOVAL represents a field whose value 175 * is unavailable (getattr) or which is not to be changed (setattr). 176 */ 177struct vattr { 178 enum vtype va_type; /* vnode type (for create) */ 179 u_short va_mode; /* files access mode and type */ 180 short va_nlink; /* number of references to file */ 181 uid_t va_uid; /* owner user id */ 182 gid_t va_gid; /* owner group id */ 183 udev_t va_fsid; /* file system id */ 184 long va_fileid; /* file id */ 185 u_quad_t va_size; /* file size in bytes */ 186 long va_blocksize; /* blocksize preferred for i/o */ 187 struct timespec va_atime; /* time of last access */ 188 struct timespec va_mtime; /* time of last modification */ 189 struct timespec va_ctime; /* time file changed */ 190 u_long va_gen; /* generation number of file */ 191 u_long va_flags; /* flags defined for file */ 192 udev_t va_rdev; /* device the special file represents */ 193 u_quad_t va_bytes; /* bytes of disk space held by file */ 194 u_quad_t va_filerev; /* file modification number */ 195 u_int va_vaflags; /* operations flags, see below */ 196 long va_spare; /* remain quad aligned */ 197}; 198 199/* 200 * Flags for va_vaflags. 201 */ 202#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 203#define VA_EXCLUSIVE 0x02 /* exclusive create request */ 204 205/* 206 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 207 * help with write clustering) 208 */ 209#define IO_UNIT 0x01 /* do I/O as atomic unit */ 210#define IO_APPEND 0x02 /* append write to end */ 211#define IO_SYNC 0x04 /* do I/O synchronously */ 212#define IO_NODELOCKED 0x08 /* underlying node already locked */ 213#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */ 214#define IO_VMIO 0x20 /* data already in VMIO space */ 215#define IO_INVAL 0x40 /* invalidate after I/O */ 216#define IO_ASYNC 0x80 /* bawrite rather then bdwrite */ 217 218/* 219 * Modes. Some values same as Ixxx entries from inode.h for now. 220 */ 221#define VADMIN 010000 /* permission to administer vnode */ 222#define VSUID 004000 /* set user id on execution */ 223#define VSGID 002000 /* set group id on execution */ 224#define VSVTX 001000 /* save swapped text even after use */ 225#define VREAD 000400 /* read, write, execute permissions */ 226#define VWRITE 000200 227#define VEXEC 000100 228 229/* 230 * Token indicating no attribute value yet assigned. 231 */ 232#define VNOVAL (-1) 233 234#ifdef _KERNEL 235 236#ifdef MALLOC_DECLARE 237MALLOC_DECLARE(M_VNODE); 238#endif 239 240/* 241 * Convert between vnode types and inode formats (since POSIX.1 242 * defines mode word of stat structure in terms of inode formats). 243 */ 244extern enum vtype iftovt_tab[]; 245extern int vttoif_tab[]; 246#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 247#define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 248#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 249 250/* 251 * Flags to various vnode functions. 252 */ 253#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 254#define FORCECLOSE 0x0002 /* vflush: force file closure */ 255#define WRITECLOSE 0x0004 /* vflush: only close writable files */ 256#define DOCLOSE 0x0008 /* vclean: close active files */ 257#define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 258#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 259#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ 260#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */ 261#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */ 262 263#define VREF(vp) vref(vp) 264 265 266#ifdef DIAGNOSTIC 267#define VATTR_NULL(vap) vattr_null(vap) 268#else 269#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 270#endif /* DIAGNOSTIC */ 271 272#define NULLVP ((struct vnode *)NULL) 273 274#define VNODEOP_SET(f) \ 275 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 276 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 277 278/* 279 * Global vnode data. 280 */ 281extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 282extern int desiredvnodes; /* number of vnodes desired */ 283extern time_t syncdelay; /* max time to delay syncing data */ 284extern time_t filedelay; /* time to delay syncing files */ 285extern time_t dirdelay; /* time to delay syncing directories */ 286extern time_t metadelay; /* time to delay syncing metadata */ 287extern struct vm_zone *namei_zone; 288extern int prtactive; /* nonzero to call vprint() */ 289extern struct vattr va_null; /* predefined null vattr structure */ 290extern int vfs_ioopt; 291 292/* 293 * Macro/function to check for client cache inconsistency w.r.t. leasing. 294 */ 295#define LEASE_READ 0x1 /* Check lease for readers */ 296#define LEASE_WRITE 0x2 /* Check lease for modifiers */ 297 298 299extern void (*lease_updatetime) __P((int deltat)); 300 301#define VSHOULDFREE(vp) \ 302 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 303 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 304 (!(vp)->v_object || \ 305 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 306 307#define VSHOULDBUSY(vp) \ 308 (((vp)->v_flag & VFREE) && \ 309 ((vp)->v_holdcnt || (vp)->v_usecount)) 310 311#define VI_LOCK(vp) mtx_lock(&(vp)->v_interlock) 312#define VI_TRYLOCK(vp) mtx_trylock(&(vp)->v_interlock) 313#define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock) 314 315#endif /* _KERNEL */ 316 317 318/* 319 * Mods for extensibility. 320 */ 321 322/* 323 * Flags for vdesc_flags: 324 */ 325#define VDESC_MAX_VPS 16 326/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 327#define VDESC_VP0_WILLRELE 0x0001 328#define VDESC_VP1_WILLRELE 0x0002 329#define VDESC_VP2_WILLRELE 0x0004 330#define VDESC_VP3_WILLRELE 0x0008 331#define VDESC_NOMAP_VPP 0x0100 332#define VDESC_VPP_WILLRELE 0x0200 333 334/* 335 * VDESC_NO_OFFSET is used to identify the end of the offset list 336 * and in places where no such field exists. 337 */ 338#define VDESC_NO_OFFSET -1 339 340/* 341 * This structure describes the vnode operation taking place. 342 */ 343struct vnodeop_desc { 344 int vdesc_offset; /* offset in vector--first for speed */ 345 char *vdesc_name; /* a readable name for debugging */ 346 int vdesc_flags; /* VDESC_* flags */ 347 348 /* 349 * These ops are used by bypass routines to map and locate arguments. 350 * Creds and procs are not needed in bypass routines, but sometimes 351 * they are useful to (for example) transport layers. 352 * Nameidata is useful because it has a cred in it. 353 */ 354 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 355 int vdesc_vpp_offset; /* return vpp location */ 356 int vdesc_cred_offset; /* cred location, if any */ 357 int vdesc_proc_offset; /* proc location, if any */ 358 int vdesc_componentname_offset; /* if any */ 359 /* 360 * Finally, we've got a list of private data (about each operation) 361 * for each transport layer. (Support to manage this list is not 362 * yet part of BSD.) 363 */ 364 caddr_t *vdesc_transports; 365}; 366 367#ifdef _KERNEL 368/* 369 * A list of all the operation descs. 370 */ 371extern struct vnodeop_desc *vnodeop_descs[]; 372 373/* 374 * Interlock for scanning list of vnodes attached to a mountpoint 375 */ 376extern struct mtx mntvnode_mtx; 377 378/* 379 * This macro is very helpful in defining those offsets in the vdesc struct. 380 * 381 * This is stolen from X11R4. I ignored all the fancy stuff for 382 * Crays, so if you decide to port this to such a serious machine, 383 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 384 */ 385#define VOPARG_OFFSET(p_type,field) \ 386 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 387#define VOPARG_OFFSETOF(s_type,field) \ 388 VOPARG_OFFSET(s_type*,field) 389#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 390 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 391 392 393/* 394 * This structure is used to configure the new vnodeops vector. 395 */ 396struct vnodeopv_entry_desc { 397 struct vnodeop_desc *opve_op; /* which operation this is */ 398 vop_t *opve_impl; /* code implementing this operation */ 399}; 400struct vnodeopv_desc { 401 /* ptr to the ptr to the vector where op should go */ 402 vop_t ***opv_desc_vector_p; 403 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 404}; 405 406/* 407 * A generic structure. 408 * This can be used by bypass routines to identify generic arguments. 409 */ 410struct vop_generic_args { 411 struct vnodeop_desc *a_desc; 412 /* other random data follows, presumably */ 413}; 414 415 416#ifdef DEBUG_VFS_LOCKS 417/* 418 * Macros to aid in tracing VFS locking problems. Not totally 419 * reliable since if the process sleeps between changing the lock 420 * state and checking it with the assert, some other process could 421 * change the state. They are good enough for debugging a single 422 * filesystem using a single-threaded test. I find that 'cvs co src' 423 * is a pretty good test. 424 */ 425 426/* 427 * [dfr] Kludge until I get around to fixing all the vfs locking. 428 */ 429#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 430 || (vp)->v_tag == VT_MFS \ 431 || (vp)->v_tag == VT_NFS \ 432 || (vp)->v_tag == VT_LFS \ 433 || (vp)->v_tag == VT_ISOFS \ 434 || (vp)->v_tag == VT_MSDOSFS \ 435 || (vp)->v_tag == VT_DEVFS) 436 437#define ASSERT_VOP_LOCKED(vp, str) \ 438do { \ 439 struct vnode *_vp = (vp); \ 440 \ 441 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 442 panic("%s: %p is not locked but should be", str, _vp); \ 443} while (0) 444 445#define ASSERT_VOP_UNLOCKED(vp, str) \ 446do { \ 447 struct vnode *_vp = (vp); \ 448 int lockstate; \ 449 \ 450 if (_vp && IS_LOCKING_VFS(_vp)) { \ 451 lockstate = VOP_ISLOCKED(_vp, curproc); \ 452 if (lockstate == LK_EXCLUSIVE) \ 453 panic("%s: %p is locked but should not be", \ 454 str, _vp); \ 455 } \ 456} while (0) 457 458#define ASSERT_VOP_ELOCKED(vp, str) \ 459do { \ 460 struct vnode *_vp = (vp); \ 461 \ 462 if (_vp && IS_LOCKING_VFS(_vp) && \ 463 VOP_ISLOCKED(_vp, curproc) != LK_EXCLUSIVE) \ 464 panic("%s: %p is not exclusive locked but should be", \ 465 str, _vp); \ 466} while (0) 467 468#define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 469do { \ 470 struct vnode *_vp = (vp); \ 471 \ 472 if (_vp && IS_LOCKING_VFS(_vp) && \ 473 VOP_ISLOCKED(_vp, curproc) != LK_EXCLOTHER) \ 474 panic("%s: %p is not exclusive locked by another proc", \ 475 str, _vp); \ 476} while (0) 477 478#define ASSERT_VOP_SLOCKED(vp, str) \ 479do { \ 480 struct vnode *_vp = (vp); \ 481 \ 482 if (_vp && IS_LOCKING_VFS(_vp) && \ 483 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 484 panic("%s: %p is not locked shared but should be", \ 485 str, _vp); \ 486} while (0) 487 488#else 489 490#define ASSERT_VOP_LOCKED(vp, str) 491#define ASSERT_VOP_UNLOCKED(vp, str) 492 493#endif 494 495/* 496 * VOCALL calls an op given an ops vector. We break it out because BSD's 497 * vclean changes the ops vector and then wants to call ops with the old 498 * vector. 499 */ 500#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 501 502/* 503 * This call works for vnodes in the kernel. 504 */ 505#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 506#define VDESC(OP) (& __CONCAT(OP,_desc)) 507#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 508 509/* 510 * VMIO support inline 511 */ 512 513extern int vmiodirenable; 514 515static __inline int 516vn_canvmio(struct vnode *vp) 517{ 518 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 519 return(TRUE); 520 return(FALSE); 521} 522 523/* 524 * Finally, include the default set of vnode operations. 525 */ 526#include "vnode_if.h" 527 528/* 529 * Public vnode manipulation functions. 530 */ 531struct componentname; 532struct file; 533struct mount; 534struct nameidata; 535struct ostat; 536struct proc; 537struct stat; 538struct nstat; 539struct ucred; 540struct uio; 541struct vattr; 542struct vnode; 543 544extern int (*lease_check_hook) __P((struct vop_lease_args *)); 545 546struct vnode *addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 547int bdevvp __P((dev_t dev, struct vnode **vpp)); 548/* cache_* may belong in namei.h. */ 549void cache_enter __P((struct vnode *dvp, struct vnode *vp, 550 struct componentname *cnp)); 551int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 552 struct componentname *cnp)); 553void cache_purge __P((struct vnode *vp)); 554void cache_purgevfs __P((struct mount *mp)); 555void cvtstat __P((struct stat *st, struct ostat *ost)); 556void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 557int getnewvnode __P((enum vtagtype tag, 558 struct mount *mp, vop_t **vops, struct vnode **vpp)); 559int lease_check __P((struct vop_lease_args *ap)); 560int spec_vnoperate __P((struct vop_generic_args *)); 561int speedup_syncer __P((void)); 562int textvp_fullpath __P((struct proc *p, char **retbuf, char **retfreebuf)); 563int vaccess __P((enum vtype type, mode_t file_mode, uid_t uid, gid_t gid, 564 mode_t acc_mode, struct ucred *cred, int *privused)); 565int vaccess_acl_posix1e __P((enum vtype type, uid_t file_uid, 566 gid_t file_gid, struct acl *acl, mode_t acc_mode, 567 struct ucred *cred, int *privused)); 568void vattr_null __P((struct vattr *vap)); 569int vcount __P((struct vnode *vp)); 570void vdrop __P((struct vnode *)); 571int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 572void vfs_add_vnodeops __P((const void *)); 573void vfs_rm_vnodeops __P((const void *)); 574int vflush __P((struct mount *mp, struct vnode *skipvp, int flags)); 575int vget __P((struct vnode *vp, int lockflag, struct proc *p)); 576void vgone __P((struct vnode *vp)); 577void vgonel __P((struct vnode *vp, struct proc *p)); 578void vhold __P((struct vnode *)); 579int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred, 580 581 struct proc *p, int slpflag, int slptimeo)); 582int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p, 583 off_t length, int blksize)); 584void vprint __P((char *label, struct vnode *vp)); 585int vrecycle __P((struct vnode *vp, struct mtx *inter_lkp, 586 struct proc *p)); 587int vn_close __P((struct vnode *vp, 588 int flags, struct ucred *cred, struct proc *p)); 589void vn_finished_write __P((struct mount *mp)); 590int vn_isdisk __P((struct vnode *vp, int *errp)); 591int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 592#ifdef DEBUG_LOCKS 593int debug_vn_lock __P((struct vnode *vp, int flags, struct proc *p, 594 const char *filename, int line)); 595#define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 596#endif 597int vn_open __P((struct nameidata *ndp, int *flagp, int cmode)); 598void vn_pollevent __P((struct vnode *vp, int events)); 599void vn_pollgone __P((struct vnode *vp)); 600int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events)); 601int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 602 int len, off_t offset, enum uio_seg segflg, int ioflg, 603 struct ucred *cred, int *aresid, struct proc *p)); 604int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 605int vn_start_write __P((struct vnode *vp, struct mount **mpp, int flags)); 606dev_t vn_todev __P((struct vnode *vp)); 607int vn_write_suspend_wait __P((struct vnode *vp, struct mount *mp, 608 int flags)); 609int vn_writechk __P((struct vnode *vp)); 610int vn_extattr_get __P((struct vnode *vp, int ioflg, int attrnamespace, 611 const char *attrname, int *buflen, char *buf, struct proc *p)); 612int vn_extattr_set __P((struct vnode *vp, int ioflg, int attrnamespace, 613 const char *attrname, int buflen, char *buf, struct proc *p)); 614int vn_extattr_rm(struct vnode *vp, int ioflg, int attrnamespace, 615 const char *attrname, struct proc *p); 616int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 617int vfs_object_create __P((struct vnode *vp, struct proc *p, 618 struct ucred *cred)); 619void vfs_timestamp __P((struct timespec *)); 620void vfs_write_resume __P((struct mount *mp)); 621void vfs_write_suspend __P((struct mount *mp)); 622int vop_stdgetwritemount __P((struct vop_getwritemount_args *)); 623int vop_stdinactive __P((struct vop_inactive_args *)); 624int vop_stdislocked __P((struct vop_islocked_args *)); 625int vop_stdlock __P((struct vop_lock_args *)); 626int vop_stdunlock __P((struct vop_unlock_args *)); 627int vop_noislocked __P((struct vop_islocked_args *)); 628int vop_nolock __P((struct vop_lock_args *)); 629int vop_nopoll __P((struct vop_poll_args *)); 630int vop_nounlock __P((struct vop_unlock_args *)); 631int vop_stdpathconf __P((struct vop_pathconf_args *)); 632int vop_stdpoll __P((struct vop_poll_args *)); 633int vop_revoke __P((struct vop_revoke_args *)); 634int vop_sharedlock __P((struct vop_lock_args *)); 635int vop_eopnotsupp __P((struct vop_generic_args *ap)); 636int vop_ebadf __P((struct vop_generic_args *ap)); 637int vop_einval __P((struct vop_generic_args *ap)); 638int vop_enotty __P((struct vop_generic_args *ap)); 639int vop_defaultop __P((struct vop_generic_args *ap)); 640int vop_null __P((struct vop_generic_args *ap)); 641int vop_panic __P((struct vop_generic_args *ap)); 642int vop_stdcreatevobject __P((struct vop_createvobject_args *ap)); 643int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap)); 644int vop_stdgetvobject __P((struct vop_getvobject_args *ap)); 645 646void vfree __P((struct vnode *)); 647void vput __P((struct vnode *vp)); 648void vrele __P((struct vnode *vp)); 649void vref __P((struct vnode *vp)); 650void vbusy __P((struct vnode *vp)); 651 652extern vop_t **default_vnodeop_p; 653extern vop_t **spec_vnodeop_p; 654extern vop_t **dead_vnodeop_p; 655 656#endif /* _KERNEL */ 657 658#endif /* !_SYS_VNODE_H_ */ 659