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: src/sys/sys/vnode.h,v 1.111.2.19 2002/12/29 18:19:53 dillon Exp $ 35 * $DragonFly: src/sys/sys/vnode.h,v 1.12 2004/03/07 12:09:04 eirikn Exp $ 36 */ 37 38 #ifndef _SYS_VNODE_H_ 39 #define _SYS_VNODE_H_ 40 41 #include <sys/queue.h> 42 #include <sys/lock.h> 43 #include <sys/select.h> 44 #include <sys/uio.h> 45 #include <sys/acl.h> 46 #include <sys/namecache.h> 47 48 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 49 #include <sys/thread.h> 50 #endif 51 52 #include <machine/lock.h> 53 54 /* 55 * The vnode is the focus of all file activity in UNIX. There is a 56 * unique vnode allocated for each active file, each current directory, 57 * each mounted-on file, text file, and the root. 58 */ 59 60 /* 61 * Vnode types. VNON means no type. 62 */ 63 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 64 65 /* 66 * Vnode tag types. 67 * These are for the benefit of external programs only (e.g., pstat) 68 * and should NEVER be inspected by the kernel. 69 */ 70 enum vtagtype { 71 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 72 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 73 VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 74 VT_HPFS, VT_NWFS, VT_SMBFS 75 }; 76 77 /* 78 * Each underlying filesystem allocates its own private area and hangs 79 * it from v_data. If non-null, this area is freed in getnewvnode(). 80 */ 81 TAILQ_HEAD(buflists, buf); 82 83 typedef int vop_t (void *); 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 token. 88 * v_mntvnodes is locked by the global mntvnodes token. 89 * v_flag, v_usecount, v_holdcount and v_writecount are 90 * locked by the v_interlock token. 91 * v_pollinfo is locked by the lock contained inside it. 92 */ 93 struct 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 lwkt_token_t v_interlock; /* lock on usecount and flag */ 124 struct lock *v_vnlock; /* used for non-locking fs's */ 125 enum vtagtype v_tag; /* type of underlying data */ 126 void *v_data; /* private data for fs */ 127 128 /* 129 * YYY note: v_dd, v_ddid will become obsolete once the namecache 130 * code is finished. 131 */ 132 struct namecache_list v_namecache; /* associated nc entries */ 133 struct vnode *v_dd; /* .. vnode */ 134 u_long v_ddid; /* .. capability identifier */ 135 struct { 136 struct lwkt_token vpi_token; /* lock to protect below */ 137 struct selinfo vpi_selinfo; /* identity of poller(s) */ 138 short vpi_events; /* what they are looking for */ 139 short vpi_revents; /* what has happened */ 140 } v_pollinfo; 141 struct thread *v_vxthread; /* thread owning VXLOCK */ 142 struct vmresident *v_resident; /* optional vmresident */ 143 #ifdef DEBUG_LOCKS 144 const char *filename; /* Source file doing locking */ 145 int line; /* Line number doing locking */ 146 #endif 147 }; 148 #define v_mountedhere v_un.vu_mountedhere 149 #define v_socket v_un.vu_socket 150 #define v_rdev v_un.vu_spec.vu_specinfo 151 #define v_specnext v_un.vu_spec.vu_specnext 152 #define v_fifoinfo v_un.vu_fifoinfo 153 154 #define VN_POLLEVENT(vp, events) \ 155 do { \ 156 if ((vp)->v_pollinfo.vpi_events & (events)) \ 157 vn_pollevent((vp), (events)); \ 158 } while (0) 159 160 /* 161 * Vnode flags. 162 */ 163 #define VROOT 0x00001 /* root of its file system */ 164 #define VTEXT 0x00002 /* vnode is a pure text prototype */ 165 #define VSYSTEM 0x00004 /* vnode being used by kernel */ 166 #define VISTTY 0x00008 /* vnode represents a tty */ 167 #define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 168 #define VXWANT 0x00200 /* process is waiting for vnode */ 169 #define VBWAIT 0x00400 /* waiting for output to complete */ 170 /* open for business 0x00800 */ 171 /* open for business 0x01000 */ 172 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 173 /* open for business 0x04000 */ 174 #define VAGE 0x08000 /* Insert vnode at head of free list */ 175 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 176 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 177 #define VDOOMED 0x40000 /* This vnode is being recycled */ 178 #define VFREE 0x80000 /* This vnode is on the freelist */ 179 #define VINFREE 0x100000 /* This vnode is in the midst of being freed */ 180 #define VONWORKLST 0x200000 /* On syncer work-list */ 181 #define VMOUNT 0x400000 /* Mount in progress */ 182 #define VOBJDIRTY 0x800000 /* object might be dirty */ 183 #define VPLACEMARKER 0x1000000 /* dummy vnode placemarker */ 184 185 /* 186 * Vnode attributes. A field value of VNOVAL represents a field whose value 187 * is unavailable (getattr) or which is not to be changed (setattr). 188 */ 189 struct vattr { 190 enum vtype va_type; /* vnode type (for create) */ 191 u_short va_mode; /* files access mode and type */ 192 short va_nlink; /* number of references to file */ 193 uid_t va_uid; /* owner user id */ 194 gid_t va_gid; /* owner group id */ 195 udev_t va_fsid; /* file system id */ 196 long va_fileid; /* file id */ 197 u_quad_t va_size; /* file size in bytes */ 198 long va_blocksize; /* blocksize preferred for i/o */ 199 struct timespec va_atime; /* time of last access */ 200 struct timespec va_mtime; /* time of last modification */ 201 struct timespec va_ctime; /* time file changed */ 202 u_long va_gen; /* generation number of file */ 203 u_long va_flags; /* flags defined for file */ 204 udev_t va_rdev; /* device the special file represents */ 205 u_quad_t va_bytes; /* bytes of disk space held by file */ 206 u_quad_t va_filerev; /* file modification number */ 207 u_int va_vaflags; /* operations flags, see below */ 208 long va_spare; /* remain quad aligned */ 209 }; 210 211 /* 212 * Flags for va_vaflags. 213 */ 214 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 215 #define VA_EXCLUSIVE 0x02 /* exclusive create request */ 216 217 /* 218 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 219 * help with write clustering) 220 */ 221 #define IO_UNIT 0x0001 /* do I/O as atomic unit */ 222 #define IO_APPEND 0x0002 /* append write to end */ 223 #define IO_SYNC 0x0004 /* do I/O synchronously */ 224 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 225 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 226 #define IO_VMIO 0x0020 /* data already in VMIO space */ 227 #define IO_INVAL 0x0040 /* invalidate after I/O */ 228 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 229 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 230 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */ 231 #define IO_CORE 0x0400 /* I/O is part of core dump */ 232 233 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 234 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 235 236 /* 237 * Modes. Some values same as Ixxx entries from inode.h for now. 238 */ 239 #define VSUID 04000 /* set user id on execution */ 240 #define VSGID 02000 /* set group id on execution */ 241 #define VSVTX 01000 /* save swapped text even after use */ 242 #define VREAD 00400 /* read, write, execute permissions */ 243 #define VWRITE 00200 244 #define VEXEC 00100 245 246 /* 247 * Token indicating no attribute value yet assigned. 248 */ 249 #define VNOVAL (-1) 250 251 /* 252 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 253 */ 254 #define VLKTIMEOUT (hz / 20 + 1) 255 256 #ifdef _KERNEL 257 258 #ifdef MALLOC_DECLARE 259 MALLOC_DECLARE(M_VNODE); 260 #endif 261 262 /* 263 * Convert between vnode types and inode formats (since POSIX.1 264 * defines mode word of stat structure in terms of inode formats). 265 */ 266 extern enum vtype iftovt_tab[]; 267 extern int vttoif_tab[]; 268 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 269 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 270 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 271 272 /* 273 * Flags to various vnode functions. 274 */ 275 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 276 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 277 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 278 #define DOCLOSE 0x0008 /* vclean: close active files */ 279 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 280 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 281 282 #define VREF(vp) vref(vp) 283 284 285 #ifdef DIAGNOSTIC 286 #define VATTR_NULL(vap) vattr_null(vap) 287 #else 288 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 289 #endif /* DIAGNOSTIC */ 290 291 #define NULLVP ((struct vnode *)NULL) 292 293 #define VNODEOP_SET(f) \ 294 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 295 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 296 297 /* 298 * Global vnode data. 299 */ 300 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 301 extern int desiredvnodes; /* number of vnodes desired */ 302 extern time_t syncdelay; /* max time to delay syncing data */ 303 extern time_t filedelay; /* time to delay syncing files */ 304 extern time_t dirdelay; /* time to delay syncing directories */ 305 extern time_t metadelay; /* time to delay syncing metadata */ 306 extern struct vm_zone *namei_zone; 307 extern int prtactive; /* nonzero to call vprint() */ 308 extern struct vattr va_null; /* predefined null vattr structure */ 309 extern int vfs_ioopt; 310 311 /* 312 * Macro/function to check for client cache inconsistency w.r.t. leasing. 313 */ 314 #define LEASE_READ 0x1 /* Check lease for readers */ 315 #define LEASE_WRITE 0x2 /* Check lease for modifiers */ 316 317 318 extern void (*lease_updatetime) (int deltat); 319 320 #define VI_LOCK(vlock, vp) lwkt_gettoken(vlock, (vp)->v_interlock) 321 #define VI_UNLOCK(vlock, vp) lwkt_reltoken(vlock) 322 323 #endif /* _KERNEL */ 324 325 326 /* 327 * Mods for extensibility. 328 */ 329 330 /* 331 * Flags for vdesc_flags: 332 */ 333 #define VDESC_MAX_VPS 16 334 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 335 #define VDESC_VP0_WILLRELE 0x0001 336 #define VDESC_VP1_WILLRELE 0x0002 337 #define VDESC_VP2_WILLRELE 0x0004 338 #define VDESC_VP3_WILLRELE 0x0008 339 #define VDESC_NOMAP_VPP 0x0100 340 #define VDESC_VPP_WILLRELE 0x0200 341 342 /* 343 * VDESC_NO_OFFSET is used to identify the end of the offset list 344 * and in places where no such field exists. 345 */ 346 #define VDESC_NO_OFFSET -1 347 348 /* 349 * This structure describes the vnode operation taking place. 350 */ 351 struct vnodeop_desc { 352 int vdesc_offset; /* offset in vector--first for speed */ 353 char *vdesc_name; /* a readable name for debugging */ 354 int vdesc_flags; /* VDESC_* flags */ 355 356 /* 357 * These ops are used by bypass routines to map and locate arguments. 358 * Creds and procs are not needed in bypass routines, but sometimes 359 * they are useful to (for example) transport layers. 360 * Nameidata is useful because it has a cred in it. 361 */ 362 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 363 int vdesc_vpp_offset; /* return vpp location */ 364 int vdesc_cred_offset; /* cred location, if any */ 365 int vdesc_proc_offset; /* proc location, if any */ 366 int vdesc_componentname_offset; /* if any */ 367 /* 368 * Finally, we've got a list of private data (about each operation) 369 * for each transport layer. (Support to manage this list is not 370 * yet part of BSD.) 371 */ 372 caddr_t *vdesc_transports; 373 }; 374 375 #ifdef _KERNEL 376 /* 377 * A list of all the operation descs. 378 */ 379 extern struct vnodeop_desc *vnodeop_descs[]; 380 381 /* 382 * Interlock for scanning list of vnodes attached to a mountpoint 383 */ 384 extern struct lwkt_token mntvnode_token; 385 386 /* 387 * This macro is very helpful in defining those offsets in the vdesc struct. 388 * 389 * This is stolen from X11R4. I ignored all the fancy stuff for 390 * Crays, so if you decide to port this to such a serious machine, 391 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 392 */ 393 #define VOPARG_OFFSET(p_type,field) \ 394 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 395 #define VOPARG_OFFSETOF(s_type,field) \ 396 VOPARG_OFFSET(s_type*,field) 397 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 398 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 399 400 401 /* 402 * This structure is used to configure the new vnodeops vector. 403 */ 404 struct vnodeopv_entry_desc { 405 struct vnodeop_desc *opve_op; /* which operation this is */ 406 vop_t *opve_impl; /* code implementing this operation */ 407 }; 408 struct vnodeopv_desc { 409 /* ptr to the ptr to the vector where op should go */ 410 vop_t ***opv_desc_vector_p; 411 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 412 }; 413 414 /* 415 * A generic structure. 416 * This can be used by bypass routines to identify generic arguments. 417 */ 418 struct vop_generic_args { 419 struct vnodeop_desc *a_desc; 420 /* other random data follows, presumably */ 421 }; 422 423 424 #ifdef DEBUG_VFS_LOCKS 425 /* 426 * Macros to aid in tracing VFS locking problems. Not totally 427 * reliable since if the process sleeps between changing the lock 428 * state and checking it with the assert, some other process could 429 * change the state. They are good enough for debugging a single 430 * filesystem using a single-threaded test. I find that 'cvs co src' 431 * is a pretty good test. 432 */ 433 434 /* 435 * [dfr] Kludge until I get around to fixing all the vfs locking. 436 */ 437 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 438 || (vp)->v_tag == VT_MFS \ 439 || (vp)->v_tag == VT_NFS \ 440 || (vp)->v_tag == VT_LFS \ 441 || (vp)->v_tag == VT_ISOFS \ 442 || (vp)->v_tag == VT_MSDOSFS) 443 444 #define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked(vp, str) 445 #define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked(vp, str); 446 447 #define ASSERT_VOP_ELOCKED(vp, str) \ 448 do { \ 449 struct vnode *_vp = (vp); \ 450 \ 451 if (_vp && IS_LOCKING_VFS(_vp) && \ 452 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \ 453 panic("%s: %p is not exclusive locked but should be", \ 454 str, _vp); \ 455 } while (0) 456 457 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 458 do { \ 459 struct vnode *_vp = (vp); \ 460 \ 461 if (_vp && IS_LOCKING_VFS(_vp) && \ 462 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \ 463 panic("%s: %p is not exclusive locked by another proc", \ 464 str, _vp); \ 465 } while (0) 466 467 #define ASSERT_VOP_SLOCKED(vp, str) \ 468 do { \ 469 struct vnode *_vp = (vp); \ 470 \ 471 if (_vp && IS_LOCKING_VFS(_vp) && \ 472 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 473 panic("%s: %p is not locked shared but should be", \ 474 str, _vp); \ 475 } while (0) 476 477 void assert_vop_locked(struct vnode *vp, const char *str); 478 void assert_vop_unlocked(struct vnode *vp, const char *str); 479 480 #else 481 482 #define ASSERT_VOP_LOCKED(vp, str) 483 #define ASSERT_VOP_UNLOCKED(vp, str) 484 485 #endif /* DEBUG_VFS_LOCKS */ 486 487 /* 488 * VOCALL calls an op given an ops vector. We break it out because BSD's 489 * vclean changes the ops vector and then wants to call ops with the old 490 * vector. 491 */ 492 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 493 494 /* 495 * This call works for vnodes in the kernel. 496 */ 497 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 498 #define VDESC(OP) (& __CONCAT(OP,_desc)) 499 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 500 501 /* 502 * VMIO support inline 503 */ 504 505 extern int vmiodirenable; 506 507 static __inline int 508 vn_canvmio(struct vnode *vp) 509 { 510 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 511 return(TRUE); 512 return(FALSE); 513 } 514 515 /* 516 * Finally, include the default set of vnode operations. 517 */ 518 #include "vnode_if.h" 519 520 /* 521 * Public vnode manipulation functions. 522 */ 523 struct file; 524 struct mount; 525 struct nameidata; 526 struct ostat; 527 struct proc; 528 struct thread; 529 struct stat; 530 struct nstat; 531 struct ucred; 532 struct uio; 533 struct vattr; 534 struct vnode; 535 struct vop_bwrite_args; 536 537 extern int (*lease_check_hook) (struct vop_lease_args *); 538 539 void addalias (struct vnode *vp, dev_t nvp_rdev); 540 void addaliasu (struct vnode *vp, udev_t nvp_rdev); 541 int bdevvp (dev_t dev, struct vnode **vpp); 542 void cvtstat (struct stat *st, struct ostat *ost); 543 void cvtnstat (struct stat *sb, struct nstat *nsb); 544 int getnewvnode (enum vtagtype tag, 545 struct mount *mp, vop_t **vops, struct vnode **vpp); 546 int lease_check (struct vop_lease_args *ap); 547 int spec_vnoperate (struct vop_generic_args *); 548 int speedup_syncer (void); 549 void vattr_null (struct vattr *vap); 550 int vcount (struct vnode *vp); 551 void vdrop (struct vnode *); 552 int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp); 553 void vfs_add_vnodeops (const void *); 554 void vfs_rm_vnodeops (const void *); 555 int vflush (struct mount *mp, int rootrefs, int flags); 556 int vmntvnodescan(struct mount *mp, 557 int (*fastfunc)(struct mount *mp, struct vnode *vp, void *data), 558 int (*slowfunc)(struct mount *mp, struct vnode *vp, lwkt_tokref_t vlock, void *data), 559 void *data); 560 561 int vget (struct vnode *vp, lwkt_tokref_t vlock, int lockflag, struct thread *td); 562 void vgone (struct vnode *vp); 563 void vgonel (struct vnode *vp, lwkt_tokref_t vlock, struct thread *td); 564 void vhold (struct vnode *); 565 int vinvalbuf (struct vnode *vp, int save, 566 struct thread *td, int slpflag, int slptimeo); 567 int vtruncbuf (struct vnode *vp, struct thread *td, 568 off_t length, int blksize); 569 void vprint (char *label, struct vnode *vp); 570 int vrecycle (struct vnode *vp, struct lwkt_tokref *inter_lkp, 571 struct thread *td); 572 int vn_close (struct vnode *vp, int flags, struct thread *td); 573 int vn_isdisk (struct vnode *vp, int *errp); 574 int vn_lock (struct vnode *vp, lwkt_tokref_t vlock, int flags, struct thread *td); 575 #ifdef DEBUG_LOCKS 576 int debug_vn_lock (struct vnode *vp, lwkt_tokref_t vlock, int flags, struct thread *td, 577 const char *filename, int line); 578 #define vn_lock(vp,vlock,flags,p) debug_vn_lock(vp,vlock,flags,p,__FILE__,__LINE__) 579 #endif 580 int vn_open (struct nameidata *ndp, int fmode, int cmode); 581 void vn_pollevent (struct vnode *vp, int events); 582 void vn_pollgone (struct vnode *vp); 583 int vn_pollrecord (struct vnode *vp, struct thread *td, int events); 584 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base, 585 int len, off_t offset, enum uio_seg segflg, int ioflg, 586 struct ucred *cred, int *aresid, struct thread *td); 587 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base, 588 int len, off_t offset, enum uio_seg segflg, int ioflg, 589 struct ucred *cred, int *aresid, struct thread *td); 590 int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td); 591 dev_t vn_todev (struct vnode *vp); 592 int vfs_object_create (struct vnode *vp, struct thread *td); 593 void vfs_timestamp (struct timespec *); 594 int vn_writechk (struct vnode *vp); 595 int vop_stdbwrite (struct vop_bwrite_args *ap); 596 int vop_stdislocked (struct vop_islocked_args *); 597 int vop_stdlock (struct vop_lock_args *); 598 int vop_stdunlock (struct vop_unlock_args *); 599 int vop_noislocked (struct vop_islocked_args *); 600 int vop_nolock (struct vop_lock_args *); 601 int vop_nopoll (struct vop_poll_args *); 602 int vop_nounlock (struct vop_unlock_args *); 603 int vop_stdpathconf (struct vop_pathconf_args *); 604 int vop_stdpoll (struct vop_poll_args *); 605 int vop_revoke (struct vop_revoke_args *); 606 int vop_sharedlock (struct vop_lock_args *); 607 int vop_eopnotsupp (struct vop_generic_args *ap); 608 int vop_ebadf (struct vop_generic_args *ap); 609 int vop_einval (struct vop_generic_args *ap); 610 int vop_enotty (struct vop_generic_args *ap); 611 int vop_defaultop (struct vop_generic_args *ap); 612 int vop_null (struct vop_generic_args *ap); 613 int vop_panic (struct vop_generic_args *ap); 614 int vop_stdcreatevobject (struct vop_createvobject_args *ap); 615 int vop_stddestroyvobject (struct vop_destroyvobject_args *ap); 616 int vop_stdgetvobject (struct vop_getvobject_args *ap); 617 618 void vput (struct vnode *vp); 619 void vrele (struct vnode *vp); 620 void vref (struct vnode *vp); 621 622 extern vop_t **default_vnodeop_p; 623 extern vop_t **spec_vnodeop_p; 624 625 #endif /* _KERNEL */ 626 627 #endif /* !_SYS_VNODE_H_ */ 628