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 1.9 2004/01/20 18:41:51 dillon 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 #include <machine/lock.h> 49 50 /* 51 * The vnode is the focus of all file activity in UNIX. There is a 52 * unique vnode allocated for each active file, each current directory, 53 * each mounted-on file, text file, and the root. 54 */ 55 56 /* 57 * Vnode types. VNON means no type. 58 */ 59 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 60 61 /* 62 * Vnode tag types. 63 * These are for the benefit of external programs only (e.g., pstat) 64 * and should NEVER be inspected by the kernel. 65 */ 66 enum vtagtype { 67 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 68 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 69 VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 70 VT_HPFS, VT_NWFS, VT_SMBFS 71 }; 72 73 /* 74 * Each underlying filesystem allocates its own private area and hangs 75 * it from v_data. If non-null, this area is freed in getnewvnode(). 76 */ 77 TAILQ_HEAD(buflists, buf); 78 79 typedef int vop_t (void *); 80 81 /* 82 * Reading or writing any of these items requires holding the appropriate lock. 83 * v_freelist is locked by the global vnode_free_list token. 84 * v_mntvnodes is locked by the global mntvnodes token. 85 * v_flag, v_usecount, v_holdcount and v_writecount are 86 * locked by the v_interlock token. 87 * v_pollinfo is locked by the lock contained inside it. 88 */ 89 struct vnode { 90 u_long v_flag; /* vnode flags (see below) */ 91 int v_usecount; /* reference count of users */ 92 int v_writecount; /* reference count of writers */ 93 int v_holdcnt; /* page & buffer references */ 94 u_long v_id; /* capability identifier */ 95 struct mount *v_mount; /* ptr to vfs we are in */ 96 vop_t **v_op; /* vnode operations vector */ 97 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 98 TAILQ_ENTRY(vnode) v_nmntvnodes; /* vnodes for mount point */ 99 struct buflists v_cleanblkhd; /* clean blocklist head */ 100 struct buflists v_dirtyblkhd; /* dirty blocklist head */ 101 LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */ 102 long v_numoutput; /* num of writes in progress */ 103 enum vtype v_type; /* vnode type */ 104 union { 105 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 106 struct socket *vu_socket; /* unix ipc (VSOCK) */ 107 struct { 108 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 109 SLIST_ENTRY(vnode) vu_specnext; 110 } vu_spec; 111 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 112 } v_un; 113 struct nqlease *v_lease; /* Soft reference to lease */ 114 daddr_t v_lastw; /* last write (write cluster) */ 115 daddr_t v_cstart; /* start block of cluster */ 116 daddr_t v_lasta; /* last allocation */ 117 int v_clen; /* length of current cluster */ 118 struct vm_object *v_object; /* Place to store VM object */ 119 struct lwkt_token v_interlock; /* lock on usecount and flag */ 120 struct lock *v_vnlock; /* used for non-locking fs's */ 121 enum vtagtype v_tag; /* type of underlying data */ 122 void *v_data; /* private data for fs */ 123 124 /* 125 * YYY note: v_dd, v_ddid will become obsolete once the namecache 126 * code is finished. 127 */ 128 struct namecache_list v_namecache; /* associated nc entries */ 129 struct vnode *v_dd; /* .. vnode */ 130 u_long v_ddid; /* .. capability identifier */ 131 struct { 132 struct lwkt_token vpi_token; /* lock to protect below */ 133 struct selinfo vpi_selinfo; /* identity of poller(s) */ 134 short vpi_events; /* what they are looking for */ 135 short vpi_revents; /* what has happened */ 136 } v_pollinfo; 137 struct proc *v_vxproc; /* proc owning VXLOCK */ 138 struct vmresident *v_resident; /* optional vmresident */ 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 /* process is waiting for vnode */ 165 #define VBWAIT 0x00400 /* waiting for output to complete */ 166 /* open for business 0x00800 */ 167 /* open for business 0x01000 */ 168 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 169 /* open for business 0x04000 */ 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 process is waiting for VOLOCK */ 173 #define VDOOMED 0x40000 /* This vnode is being recycled */ 174 #define VFREE 0x80000 /* This vnode is on the freelist */ 175 #define VONWORKLST 0x200000 /* On syncer work-list */ 176 #define VMOUNT 0x400000 /* Mount in progress */ 177 #define VOBJDIRTY 0x800000 /* object might be dirty */ 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 */ 183 struct 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 0x0001 /* do I/O as atomic unit */ 216 #define IO_APPEND 0x0002 /* append write to end */ 217 #define IO_SYNC 0x0004 /* do I/O synchronously */ 218 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 219 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 220 #define IO_VMIO 0x0020 /* data already in VMIO space */ 221 #define IO_INVAL 0x0040 /* invalidate after I/O */ 222 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 223 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 224 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */ 225 #define IO_CORE 0x0400 /* I/O is part of core dump */ 226 227 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 228 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 229 230 /* 231 * Modes. Some values same as Ixxx entries from inode.h for now. 232 */ 233 #define VSUID 04000 /* set user id on execution */ 234 #define VSGID 02000 /* set group id on execution */ 235 #define VSVTX 01000 /* save swapped text even after use */ 236 #define VREAD 00400 /* read, write, execute permissions */ 237 #define VWRITE 00200 238 #define VEXEC 00100 239 240 /* 241 * Token indicating no attribute value yet assigned. 242 */ 243 #define VNOVAL (-1) 244 245 /* 246 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 247 */ 248 #define VLKTIMEOUT (hz / 20 + 1) 249 250 #ifdef _KERNEL 251 252 #ifdef MALLOC_DECLARE 253 MALLOC_DECLARE(M_VNODE); 254 #endif 255 256 /* 257 * Convert between vnode types and inode formats (since POSIX.1 258 * defines mode word of stat structure in terms of inode formats). 259 */ 260 extern enum vtype iftovt_tab[]; 261 extern int vttoif_tab[]; 262 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 263 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 264 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 265 266 /* 267 * Flags to various vnode functions. 268 */ 269 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 270 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 271 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 272 #define DOCLOSE 0x0008 /* vclean: close active files */ 273 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 274 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 275 276 #define VREF(vp) vref(vp) 277 278 279 #ifdef DIAGNOSTIC 280 #define VATTR_NULL(vap) vattr_null(vap) 281 #else 282 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 283 #endif /* DIAGNOSTIC */ 284 285 #define NULLVP ((struct vnode *)NULL) 286 287 #define VNODEOP_SET(f) \ 288 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 289 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 290 291 /* 292 * Global vnode data. 293 */ 294 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 295 extern int desiredvnodes; /* number of vnodes desired */ 296 extern time_t syncdelay; /* max time to delay syncing data */ 297 extern time_t filedelay; /* time to delay syncing files */ 298 extern time_t dirdelay; /* time to delay syncing directories */ 299 extern time_t metadelay; /* time to delay syncing metadata */ 300 extern struct vm_zone *namei_zone; 301 extern int prtactive; /* nonzero to call vprint() */ 302 extern struct vattr va_null; /* predefined null vattr structure */ 303 extern int vfs_ioopt; 304 305 /* 306 * Macro/function to check for client cache inconsistency w.r.t. leasing. 307 */ 308 #define LEASE_READ 0x1 /* Check lease for readers */ 309 #define LEASE_WRITE 0x2 /* Check lease for modifiers */ 310 311 312 extern void (*lease_updatetime) (int deltat); 313 314 #define VSHOULDFREE(vp) \ 315 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 316 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 317 (!(vp)->v_object || \ 318 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 319 320 #define VMIGHTFREE(vp) \ 321 (((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) == 0 && \ 322 cache_leaf_test(vp) == 0 && (vp)->v_usecount == 0) 323 324 #define VSHOULDBUSY(vp) \ 325 (((vp)->v_flag & VFREE) && \ 326 ((vp)->v_holdcnt || (vp)->v_usecount)) 327 328 #define VI_LOCK(vp) lwkt_gettoken(&(vp)->v_interlock) 329 #define VI_UNLOCK(vp) lwkt_reltoken(&(vp)->v_interlock) 330 331 #endif /* _KERNEL */ 332 333 334 /* 335 * Mods for extensibility. 336 */ 337 338 /* 339 * Flags for vdesc_flags: 340 */ 341 #define VDESC_MAX_VPS 16 342 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 343 #define VDESC_VP0_WILLRELE 0x0001 344 #define VDESC_VP1_WILLRELE 0x0002 345 #define VDESC_VP2_WILLRELE 0x0004 346 #define VDESC_VP3_WILLRELE 0x0008 347 #define VDESC_NOMAP_VPP 0x0100 348 #define VDESC_VPP_WILLRELE 0x0200 349 350 /* 351 * VDESC_NO_OFFSET is used to identify the end of the offset list 352 * and in places where no such field exists. 353 */ 354 #define VDESC_NO_OFFSET -1 355 356 /* 357 * This structure describes the vnode operation taking place. 358 */ 359 struct vnodeop_desc { 360 int vdesc_offset; /* offset in vector--first for speed */ 361 char *vdesc_name; /* a readable name for debugging */ 362 int vdesc_flags; /* VDESC_* flags */ 363 364 /* 365 * These ops are used by bypass routines to map and locate arguments. 366 * Creds and procs are not needed in bypass routines, but sometimes 367 * they are useful to (for example) transport layers. 368 * Nameidata is useful because it has a cred in it. 369 */ 370 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 371 int vdesc_vpp_offset; /* return vpp location */ 372 int vdesc_cred_offset; /* cred location, if any */ 373 int vdesc_proc_offset; /* proc location, if any */ 374 int vdesc_componentname_offset; /* if any */ 375 /* 376 * Finally, we've got a list of private data (about each operation) 377 * for each transport layer. (Support to manage this list is not 378 * yet part of BSD.) 379 */ 380 caddr_t *vdesc_transports; 381 }; 382 383 #ifdef _KERNEL 384 /* 385 * A list of all the operation descs. 386 */ 387 extern struct vnodeop_desc *vnodeop_descs[]; 388 389 /* 390 * Interlock for scanning list of vnodes attached to a mountpoint 391 */ 392 extern struct lwkt_token mntvnode_token; 393 394 /* 395 * This macro is very helpful in defining those offsets in the vdesc struct. 396 * 397 * This is stolen from X11R4. I ignored all the fancy stuff for 398 * Crays, so if you decide to port this to such a serious machine, 399 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 400 */ 401 #define VOPARG_OFFSET(p_type,field) \ 402 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 403 #define VOPARG_OFFSETOF(s_type,field) \ 404 VOPARG_OFFSET(s_type*,field) 405 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 406 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 407 408 409 /* 410 * This structure is used to configure the new vnodeops vector. 411 */ 412 struct vnodeopv_entry_desc { 413 struct vnodeop_desc *opve_op; /* which operation this is */ 414 vop_t *opve_impl; /* code implementing this operation */ 415 }; 416 struct vnodeopv_desc { 417 /* ptr to the ptr to the vector where op should go */ 418 vop_t ***opv_desc_vector_p; 419 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 420 }; 421 422 /* 423 * A generic structure. 424 * This can be used by bypass routines to identify generic arguments. 425 */ 426 struct vop_generic_args { 427 struct vnodeop_desc *a_desc; 428 /* other random data follows, presumably */ 429 }; 430 431 432 #ifdef DEBUG_VFS_LOCKS 433 /* 434 * Macros to aid in tracing VFS locking problems. Not totally 435 * reliable since if the process sleeps between changing the lock 436 * state and checking it with the assert, some other process could 437 * change the state. They are good enough for debugging a single 438 * filesystem using a single-threaded test. I find that 'cvs co src' 439 * is a pretty good test. 440 */ 441 442 /* 443 * [dfr] Kludge until I get around to fixing all the vfs locking. 444 */ 445 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 446 || (vp)->v_tag == VT_MFS \ 447 || (vp)->v_tag == VT_NFS \ 448 || (vp)->v_tag == VT_LFS \ 449 || (vp)->v_tag == VT_ISOFS \ 450 || (vp)->v_tag == VT_MSDOSFS) 451 452 #define ASSERT_VOP_LOCKED(vp, str) \ 453 do { \ 454 struct vnode *_vp = (vp); \ 455 \ 456 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 457 panic("%s: %p is not locked but should be", str, _vp); \ 458 } while (0) 459 460 #define ASSERT_VOP_UNLOCKED(vp, str) \ 461 do { \ 462 struct vnode *_vp = (vp); \ 463 int lockstate; \ 464 \ 465 if (_vp && IS_LOCKING_VFS(_vp)) { \ 466 lockstate = VOP_ISLOCKED(_vp, curthread); \ 467 if (lockstate == LK_EXCLUSIVE) \ 468 panic("%s: %p is locked but should not be", \ 469 str, _vp); \ 470 } \ 471 } while (0) 472 473 #define ASSERT_VOP_ELOCKED(vp, str) \ 474 do { \ 475 struct vnode *_vp = (vp); \ 476 \ 477 if (_vp && IS_LOCKING_VFS(_vp) && \ 478 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \ 479 panic("%s: %p is not exclusive locked but should be", \ 480 str, _vp); \ 481 } while (0) 482 483 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 484 do { \ 485 struct vnode *_vp = (vp); \ 486 \ 487 if (_vp && IS_LOCKING_VFS(_vp) && \ 488 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \ 489 panic("%s: %p is not exclusive locked by another proc", \ 490 str, _vp); \ 491 } while (0) 492 493 #define ASSERT_VOP_SLOCKED(vp, str) \ 494 do { \ 495 struct vnode *_vp = (vp); \ 496 \ 497 if (_vp && IS_LOCKING_VFS(_vp) && \ 498 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 499 panic("%s: %p is not locked shared but should be", \ 500 str, _vp); \ 501 } while (0) 502 503 #else 504 505 #define ASSERT_VOP_LOCKED(vp, str) 506 #define ASSERT_VOP_UNLOCKED(vp, str) 507 508 #endif 509 510 /* 511 * VOCALL calls an op given an ops vector. We break it out because BSD's 512 * vclean changes the ops vector and then wants to call ops with the old 513 * vector. 514 */ 515 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 516 517 /* 518 * This call works for vnodes in the kernel. 519 */ 520 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 521 #define VDESC(OP) (& __CONCAT(OP,_desc)) 522 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 523 524 /* 525 * VMIO support inline 526 */ 527 528 extern int vmiodirenable; 529 530 static __inline int 531 vn_canvmio(struct vnode *vp) 532 { 533 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 534 return(TRUE); 535 return(FALSE); 536 } 537 538 /* 539 * Finally, include the default set of vnode operations. 540 */ 541 #include "vnode_if.h" 542 543 /* 544 * Public vnode manipulation functions. 545 */ 546 struct file; 547 struct mount; 548 struct nameidata; 549 struct ostat; 550 struct proc; 551 struct thread; 552 struct stat; 553 struct nstat; 554 struct ucred; 555 struct uio; 556 struct vattr; 557 struct vnode; 558 struct vop_bwrite_args; 559 560 extern int (*lease_check_hook) (struct vop_lease_args *); 561 562 void addalias (struct vnode *vp, dev_t nvp_rdev); 563 void addaliasu (struct vnode *vp, udev_t nvp_rdev); 564 int bdevvp (dev_t dev, struct vnode **vpp); 565 void cvtstat (struct stat *st, struct ostat *ost); 566 void cvtnstat (struct stat *sb, struct nstat *nsb); 567 int getnewvnode (enum vtagtype tag, 568 struct mount *mp, vop_t **vops, struct vnode **vpp); 569 int lease_check (struct vop_lease_args *ap); 570 int spec_vnoperate (struct vop_generic_args *); 571 int speedup_syncer (void); 572 void vattr_null (struct vattr *vap); 573 int vcount (struct vnode *vp); 574 void vdrop (struct vnode *); 575 int vfinddev (dev_t dev, enum vtype type, struct vnode **vpp); 576 void vfs_add_vnodeops (const void *); 577 void vfs_rm_vnodeops (const void *); 578 int vflush (struct mount *mp, int rootrefs, int flags); 579 int vget (struct vnode *vp, int lockflag, struct thread *td); 580 void vgone (struct vnode *vp); 581 void vgonel (struct vnode *vp, struct thread *td); 582 void vhold (struct vnode *); 583 int vinvalbuf (struct vnode *vp, int save, 584 struct thread *td, int slpflag, int slptimeo); 585 int vtruncbuf (struct vnode *vp, struct thread *td, 586 off_t length, int blksize); 587 void vprint (char *label, struct vnode *vp); 588 int vrecycle (struct vnode *vp, struct lwkt_token *inter_lkp, 589 struct thread *td); 590 int vn_close (struct vnode *vp, int flags, struct thread *td); 591 int vn_isdisk (struct vnode *vp, int *errp); 592 int vn_lock (struct vnode *vp, int flags, struct thread *td); 593 #ifdef DEBUG_LOCKS 594 int debug_vn_lock (struct vnode *vp, int flags, struct thread *td, 595 const char *filename, int line); 596 #define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 597 #endif 598 int vn_open (struct nameidata *ndp, int fmode, int cmode); 599 void vn_pollevent (struct vnode *vp, int events); 600 void vn_pollgone (struct vnode *vp); 601 int vn_pollrecord (struct vnode *vp, struct thread *td, int events); 602 int vn_rdwr (enum uio_rw rw, struct vnode *vp, caddr_t base, 603 int len, off_t offset, enum uio_seg segflg, int ioflg, 604 struct ucred *cred, int *aresid, struct thread *td); 605 int vn_rdwr_inchunks (enum uio_rw rw, struct vnode *vp, caddr_t base, 606 int len, off_t offset, enum uio_seg segflg, int ioflg, 607 struct ucred *cred, int *aresid, struct thread *td); 608 int vn_stat (struct vnode *vp, struct stat *sb, struct thread *td); 609 dev_t vn_todev (struct vnode *vp); 610 int vfs_object_create (struct vnode *vp, struct thread *td); 611 void vfs_timestamp (struct timespec *); 612 int vn_writechk (struct vnode *vp); 613 int vop_stdbwrite (struct vop_bwrite_args *ap); 614 int vop_stdislocked (struct vop_islocked_args *); 615 int vop_stdlock (struct vop_lock_args *); 616 int vop_stdunlock (struct vop_unlock_args *); 617 int vop_noislocked (struct vop_islocked_args *); 618 int vop_nolock (struct vop_lock_args *); 619 int vop_nopoll (struct vop_poll_args *); 620 int vop_nounlock (struct vop_unlock_args *); 621 int vop_stdpathconf (struct vop_pathconf_args *); 622 int vop_stdpoll (struct vop_poll_args *); 623 int vop_revoke (struct vop_revoke_args *); 624 int vop_sharedlock (struct vop_lock_args *); 625 int vop_eopnotsupp (struct vop_generic_args *ap); 626 int vop_ebadf (struct vop_generic_args *ap); 627 int vop_einval (struct vop_generic_args *ap); 628 int vop_enotty (struct vop_generic_args *ap); 629 int vop_defaultop (struct vop_generic_args *ap); 630 int vop_null (struct vop_generic_args *ap); 631 int vop_panic (struct vop_generic_args *ap); 632 int vop_stdcreatevobject (struct vop_createvobject_args *ap); 633 int vop_stddestroyvobject (struct vop_destroyvobject_args *ap); 634 int vop_stdgetvobject (struct vop_getvobject_args *ap); 635 636 void vfree (struct vnode *vp); 637 void vput (struct vnode *vp); 638 void vrele (struct vnode *vp); 639 void vref (struct vnode *vp); 640 void vbusy (struct vnode *vp); 641 642 extern vop_t **default_vnodeop_p; 643 extern vop_t **spec_vnodeop_p; 644 645 #endif /* _KERNEL */ 646 647 #endif /* !_SYS_VNODE_H_ */ 648