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 1.6 2003/07/06 21:23:54 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 47 #include <machine/lock.h> 48 49 /* 50 * The vnode is the focus of all file activity in UNIX. There is a 51 * unique vnode allocated for each active file, each current directory, 52 * each mounted-on file, text file, and the root. 53 */ 54 55 /* 56 * Vnode types. VNON means no type. 57 */ 58 enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD }; 59 60 /* 61 * Vnode tag types. 62 * These are for the benefit of external programs only (e.g., pstat) 63 * and should NEVER be inspected by the kernel. 64 */ 65 enum vtagtype { 66 VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC, 67 VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS, 68 VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS, 69 VT_HPFS, VT_NWFS, VT_SMBFS 70 }; 71 72 /* 73 * Each underlying filesystem allocates its own private area and hangs 74 * it from v_data. If non-null, this area is freed in getnewvnode(). 75 */ 76 TAILQ_HEAD(buflists, buf); 77 78 typedef int vop_t __P((void *)); 79 struct namecache; 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 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 124 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 125 struct vnode *v_dd; /* .. vnode */ 126 u_long v_ddid; /* .. capability identifier */ 127 struct { 128 struct lwkt_token vpi_token; /* lock to protect below */ 129 struct selinfo vpi_selinfo; /* identity of poller(s) */ 130 short vpi_events; /* what they are looking for */ 131 short vpi_revents; /* what has happened */ 132 } v_pollinfo; 133 struct proc *v_vxproc; /* proc owning VXLOCK */ 134 #ifdef DEBUG_LOCKS 135 const char *filename; /* Source file doing locking */ 136 int line; /* Line number doing locking */ 137 #endif 138 }; 139 #define v_mountedhere v_un.vu_mountedhere 140 #define v_socket v_un.vu_socket 141 #define v_rdev v_un.vu_spec.vu_specinfo 142 #define v_specnext v_un.vu_spec.vu_specnext 143 #define v_fifoinfo v_un.vu_fifoinfo 144 145 #define VN_POLLEVENT(vp, events) \ 146 do { \ 147 if ((vp)->v_pollinfo.vpi_events & (events)) \ 148 vn_pollevent((vp), (events)); \ 149 } while (0) 150 151 /* 152 * Vnode flags. 153 */ 154 #define VROOT 0x00001 /* root of its file system */ 155 #define VTEXT 0x00002 /* vnode is a pure text prototype */ 156 #define VSYSTEM 0x00004 /* vnode being used by kernel */ 157 #define VISTTY 0x00008 /* vnode represents a tty */ 158 #define VXLOCK 0x00100 /* vnode is locked to change underlying type */ 159 #define VXWANT 0x00200 /* process is waiting for vnode */ 160 #define VBWAIT 0x00400 /* waiting for output to complete */ 161 /* open for business 0x00800 */ 162 /* open for business 0x01000 */ 163 #define VOBJBUF 0x02000 /* Allocate buffers in VM object */ 164 /* open for business 0x04000 */ 165 #define VAGE 0x08000 /* Insert vnode at head of free list */ 166 #define VOLOCK 0x10000 /* vnode is locked waiting for an object */ 167 #define VOWANT 0x20000 /* a process is waiting for VOLOCK */ 168 #define VDOOMED 0x40000 /* This vnode is being recycled */ 169 #define VFREE 0x80000 /* This vnode is on the freelist */ 170 #define VONWORKLST 0x200000 /* On syncer work-list */ 171 #define VMOUNT 0x400000 /* Mount in progress */ 172 #define VOBJDIRTY 0x800000 /* object might be dirty */ 173 174 /* 175 * Vnode attributes. A field value of VNOVAL represents a field whose value 176 * is unavailable (getattr) or which is not to be changed (setattr). 177 */ 178 struct vattr { 179 enum vtype va_type; /* vnode type (for create) */ 180 u_short va_mode; /* files access mode and type */ 181 short va_nlink; /* number of references to file */ 182 uid_t va_uid; /* owner user id */ 183 gid_t va_gid; /* owner group id */ 184 udev_t va_fsid; /* file system id */ 185 long va_fileid; /* file id */ 186 u_quad_t va_size; /* file size in bytes */ 187 long va_blocksize; /* blocksize preferred for i/o */ 188 struct timespec va_atime; /* time of last access */ 189 struct timespec va_mtime; /* time of last modification */ 190 struct timespec va_ctime; /* time file changed */ 191 u_long va_gen; /* generation number of file */ 192 u_long va_flags; /* flags defined for file */ 193 udev_t va_rdev; /* device the special file represents */ 194 u_quad_t va_bytes; /* bytes of disk space held by file */ 195 u_quad_t va_filerev; /* file modification number */ 196 u_int va_vaflags; /* operations flags, see below */ 197 long va_spare; /* remain quad aligned */ 198 }; 199 200 /* 201 * Flags for va_vaflags. 202 */ 203 #define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */ 204 #define VA_EXCLUSIVE 0x02 /* exclusive create request */ 205 206 /* 207 * Flags for ioflag. (high 16 bits used to ask for read-ahead and 208 * help with write clustering) 209 */ 210 #define IO_UNIT 0x0001 /* do I/O as atomic unit */ 211 #define IO_APPEND 0x0002 /* append write to end */ 212 #define IO_SYNC 0x0004 /* do I/O synchronously */ 213 #define IO_NODELOCKED 0x0008 /* underlying node already locked */ 214 #define IO_NDELAY 0x0010 /* FNDELAY flag set in file table */ 215 #define IO_VMIO 0x0020 /* data already in VMIO space */ 216 #define IO_INVAL 0x0040 /* invalidate after I/O */ 217 #define IO_ASYNC 0x0080 /* bawrite rather then bdwrite */ 218 #define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */ 219 #define IO_NOWDRAIN 0x0200 /* do not block on wdrain */ 220 #define IO_CORE 0x0400 /* I/O is part of core dump */ 221 222 #define IO_SEQMAX 0x7F /* seq heuristic max value */ 223 #define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */ 224 225 /* 226 * Modes. Some values same as Ixxx entries from inode.h for now. 227 */ 228 #define VSUID 04000 /* set user id on execution */ 229 #define VSGID 02000 /* set group id on execution */ 230 #define VSVTX 01000 /* save swapped text even after use */ 231 #define VREAD 00400 /* read, write, execute permissions */ 232 #define VWRITE 00200 233 #define VEXEC 00100 234 235 /* 236 * Token indicating no attribute value yet assigned. 237 */ 238 #define VNOVAL (-1) 239 240 /* 241 * LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon) 242 */ 243 #define VLKTIMEOUT (hz / 20 + 1) 244 245 #ifdef _KERNEL 246 247 #ifdef MALLOC_DECLARE 248 MALLOC_DECLARE(M_VNODE); 249 #endif 250 251 /* 252 * Convert between vnode types and inode formats (since POSIX.1 253 * defines mode word of stat structure in terms of inode formats). 254 */ 255 extern enum vtype iftovt_tab[]; 256 extern int vttoif_tab[]; 257 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 258 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 259 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 260 261 /* 262 * Flags to various vnode functions. 263 */ 264 #define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */ 265 #define FORCECLOSE 0x0002 /* vflush: force file closure */ 266 #define WRITECLOSE 0x0004 /* vflush: only close writable files */ 267 #define DOCLOSE 0x0008 /* vclean: close active files */ 268 #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ 269 #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ 270 271 #define VREF(vp) vref(vp) 272 273 274 #ifdef DIAGNOSTIC 275 #define VATTR_NULL(vap) vattr_null(vap) 276 #else 277 #define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */ 278 #endif /* DIAGNOSTIC */ 279 280 #define NULLVP ((struct vnode *)NULL) 281 282 #define VNODEOP_SET(f) \ 283 C_SYSINIT(f##init, SI_SUB_VFS, SI_ORDER_SECOND, vfs_add_vnodeops, &f); \ 284 C_SYSUNINIT(f##uninit, SI_SUB_VFS, SI_ORDER_SECOND, vfs_rm_vnodeops, &f); 285 286 /* 287 * Global vnode data. 288 */ 289 extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 290 extern int desiredvnodes; /* number of vnodes desired */ 291 extern time_t syncdelay; /* max time to delay syncing data */ 292 extern time_t filedelay; /* time to delay syncing files */ 293 extern time_t dirdelay; /* time to delay syncing directories */ 294 extern time_t metadelay; /* time to delay syncing metadata */ 295 extern struct vm_zone *namei_zone; 296 extern int prtactive; /* nonzero to call vprint() */ 297 extern struct vattr va_null; /* predefined null vattr structure */ 298 extern int vfs_ioopt; 299 300 /* 301 * Macro/function to check for client cache inconsistency w.r.t. leasing. 302 */ 303 #define LEASE_READ 0x1 /* Check lease for readers */ 304 #define LEASE_WRITE 0x2 /* Check lease for modifiers */ 305 306 307 extern void (*lease_updatetime) __P((int deltat)); 308 309 #define VSHOULDFREE(vp) \ 310 (!((vp)->v_flag & (VFREE|VDOOMED)) && \ 311 !(vp)->v_holdcnt && !(vp)->v_usecount && \ 312 (!(vp)->v_object || \ 313 !((vp)->v_object->ref_count || (vp)->v_object->resident_page_count))) 314 315 #define VMIGHTFREE(vp) \ 316 (!((vp)->v_flag & (VFREE|VDOOMED|VXLOCK)) && \ 317 LIST_EMPTY(&(vp)->v_cache_src) && !(vp)->v_usecount) 318 319 #define VSHOULDBUSY(vp) \ 320 (((vp)->v_flag & VFREE) && \ 321 ((vp)->v_holdcnt || (vp)->v_usecount)) 322 323 #define VI_LOCK(vp) lwkt_gettoken(&(vp)->v_interlock) 324 #define VI_UNLOCK(vp) lwkt_reltoken(&(vp)->v_interlock) 325 326 #endif /* _KERNEL */ 327 328 329 /* 330 * Mods for extensibility. 331 */ 332 333 /* 334 * Flags for vdesc_flags: 335 */ 336 #define VDESC_MAX_VPS 16 337 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 338 #define VDESC_VP0_WILLRELE 0x0001 339 #define VDESC_VP1_WILLRELE 0x0002 340 #define VDESC_VP2_WILLRELE 0x0004 341 #define VDESC_VP3_WILLRELE 0x0008 342 #define VDESC_NOMAP_VPP 0x0100 343 #define VDESC_VPP_WILLRELE 0x0200 344 345 /* 346 * VDESC_NO_OFFSET is used to identify the end of the offset list 347 * and in places where no such field exists. 348 */ 349 #define VDESC_NO_OFFSET -1 350 351 /* 352 * This structure describes the vnode operation taking place. 353 */ 354 struct vnodeop_desc { 355 int vdesc_offset; /* offset in vector--first for speed */ 356 char *vdesc_name; /* a readable name for debugging */ 357 int vdesc_flags; /* VDESC_* flags */ 358 359 /* 360 * These ops are used by bypass routines to map and locate arguments. 361 * Creds and procs are not needed in bypass routines, but sometimes 362 * they are useful to (for example) transport layers. 363 * Nameidata is useful because it has a cred in it. 364 */ 365 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 366 int vdesc_vpp_offset; /* return vpp location */ 367 int vdesc_cred_offset; /* cred location, if any */ 368 int vdesc_proc_offset; /* proc location, if any */ 369 int vdesc_componentname_offset; /* if any */ 370 /* 371 * Finally, we've got a list of private data (about each operation) 372 * for each transport layer. (Support to manage this list is not 373 * yet part of BSD.) 374 */ 375 caddr_t *vdesc_transports; 376 }; 377 378 #ifdef _KERNEL 379 /* 380 * A list of all the operation descs. 381 */ 382 extern struct vnodeop_desc *vnodeop_descs[]; 383 384 /* 385 * Interlock for scanning list of vnodes attached to a mountpoint 386 */ 387 extern struct lwkt_token mntvnode_token; 388 389 /* 390 * This macro is very helpful in defining those offsets in the vdesc struct. 391 * 392 * This is stolen from X11R4. I ignored all the fancy stuff for 393 * Crays, so if you decide to port this to such a serious machine, 394 * you might want to consult Intrinsic.h's XtOffset{,Of,To}. 395 */ 396 #define VOPARG_OFFSET(p_type,field) \ 397 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 398 #define VOPARG_OFFSETOF(s_type,field) \ 399 VOPARG_OFFSET(s_type*,field) 400 #define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 401 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 402 403 404 /* 405 * This structure is used to configure the new vnodeops vector. 406 */ 407 struct vnodeopv_entry_desc { 408 struct vnodeop_desc *opve_op; /* which operation this is */ 409 vop_t *opve_impl; /* code implementing this operation */ 410 }; 411 struct vnodeopv_desc { 412 /* ptr to the ptr to the vector where op should go */ 413 vop_t ***opv_desc_vector_p; 414 struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */ 415 }; 416 417 /* 418 * A generic structure. 419 * This can be used by bypass routines to identify generic arguments. 420 */ 421 struct vop_generic_args { 422 struct vnodeop_desc *a_desc; 423 /* other random data follows, presumably */ 424 }; 425 426 427 #ifdef DEBUG_VFS_LOCKS 428 /* 429 * Macros to aid in tracing VFS locking problems. Not totally 430 * reliable since if the process sleeps between changing the lock 431 * state and checking it with the assert, some other process could 432 * change the state. They are good enough for debugging a single 433 * filesystem using a single-threaded test. I find that 'cvs co src' 434 * is a pretty good test. 435 */ 436 437 /* 438 * [dfr] Kludge until I get around to fixing all the vfs locking. 439 */ 440 #define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \ 441 || (vp)->v_tag == VT_MFS \ 442 || (vp)->v_tag == VT_NFS \ 443 || (vp)->v_tag == VT_LFS \ 444 || (vp)->v_tag == VT_ISOFS \ 445 || (vp)->v_tag == VT_MSDOSFS) 446 447 #define ASSERT_VOP_LOCKED(vp, str) \ 448 do { \ 449 struct vnode *_vp = (vp); \ 450 \ 451 if (_vp && IS_LOCKING_VFS(_vp) && !VOP_ISLOCKED(_vp, NULL)) \ 452 panic("%s: %p is not locked but should be", str, _vp); \ 453 } while (0) 454 455 #define ASSERT_VOP_UNLOCKED(vp, str) \ 456 do { \ 457 struct vnode *_vp = (vp); \ 458 int lockstate; \ 459 \ 460 if (_vp && IS_LOCKING_VFS(_vp)) { \ 461 lockstate = VOP_ISLOCKED(_vp, curthread); \ 462 if (lockstate == LK_EXCLUSIVE) \ 463 panic("%s: %p is locked but should not be", \ 464 str, _vp); \ 465 } \ 466 } while (0) 467 468 #define ASSERT_VOP_ELOCKED(vp, str) \ 469 do { \ 470 struct vnode *_vp = (vp); \ 471 \ 472 if (_vp && IS_LOCKING_VFS(_vp) && \ 473 VOP_ISLOCKED(_vp, curthread) != LK_EXCLUSIVE) \ 474 panic("%s: %p is not exclusive locked but should be", \ 475 str, _vp); \ 476 } while (0) 477 478 #define ASSERT_VOP_ELOCKED_OTHER(vp, str) \ 479 do { \ 480 struct vnode *_vp = (vp); \ 481 \ 482 if (_vp && IS_LOCKING_VFS(_vp) && \ 483 VOP_ISLOCKED(_vp, curthread) != LK_EXCLOTHER) \ 484 panic("%s: %p is not exclusive locked by another proc", \ 485 str, _vp); \ 486 } while (0) 487 488 #define ASSERT_VOP_SLOCKED(vp, str) \ 489 do { \ 490 struct vnode *_vp = (vp); \ 491 \ 492 if (_vp && IS_LOCKING_VFS(_vp) && \ 493 VOP_ISLOCKED(_vp, NULL) != LK_SHARED) \ 494 panic("%s: %p is not locked shared but should be", \ 495 str, _vp); \ 496 } while (0) 497 498 #else 499 500 #define ASSERT_VOP_LOCKED(vp, str) 501 #define ASSERT_VOP_UNLOCKED(vp, str) 502 503 #endif 504 505 /* 506 * VOCALL calls an op given an ops vector. We break it out because BSD's 507 * vclean changes the ops vector and then wants to call ops with the old 508 * vector. 509 */ 510 #define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 511 512 /* 513 * This call works for vnodes in the kernel. 514 */ 515 #define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 516 #define VDESC(OP) (& __CONCAT(OP,_desc)) 517 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 518 519 /* 520 * VMIO support inline 521 */ 522 523 extern int vmiodirenable; 524 525 static __inline int 526 vn_canvmio(struct vnode *vp) 527 { 528 if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR))) 529 return(TRUE); 530 return(FALSE); 531 } 532 533 /* 534 * Finally, include the default set of vnode operations. 535 */ 536 #include "vnode_if.h" 537 538 /* 539 * Public vnode manipulation functions. 540 */ 541 struct componentname; 542 struct file; 543 struct mount; 544 struct nameidata; 545 struct ostat; 546 struct proc; 547 struct thread; 548 struct stat; 549 struct nstat; 550 struct ucred; 551 struct uio; 552 struct vattr; 553 struct vnode; 554 struct vop_bwrite_args; 555 556 extern int (*lease_check_hook) __P((struct vop_lease_args *)); 557 558 void addalias __P((struct vnode *vp, dev_t nvp_rdev)); 559 void addaliasu __P((struct vnode *vp, udev_t nvp_rdev)); 560 int bdevvp __P((dev_t dev, struct vnode **vpp)); 561 /* cache_* may belong in namei.h. */ 562 void cache_enter __P((struct vnode *dvp, struct vnode *vp, 563 struct componentname *cnp)); 564 int cache_lookup __P((struct vnode *dvp, struct vnode **vpp, 565 struct componentname *cnp)); 566 void cache_purge __P((struct vnode *vp)); 567 void cache_purgevfs __P((struct mount *mp)); 568 int cache_leaf_test __P((struct vnode *vp)); 569 void cvtstat __P((struct stat *st, struct ostat *ost)); 570 void cvtnstat __P((struct stat *sb, struct nstat *nsb)); 571 int getnewvnode __P((enum vtagtype tag, 572 struct mount *mp, vop_t **vops, struct vnode **vpp)); 573 int lease_check __P((struct vop_lease_args *ap)); 574 int spec_vnoperate __P((struct vop_generic_args *)); 575 int speedup_syncer __P((void)); 576 int textvp_fullpath __P((struct proc *p, char **retbuf, char **retfreebuf)); 577 void vattr_null __P((struct vattr *vap)); 578 int vcount __P((struct vnode *vp)); 579 void vdrop __P((struct vnode *)); 580 int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp)); 581 void vfs_add_vnodeops __P((const void *)); 582 void vfs_rm_vnodeops __P((const void *)); 583 int vflush __P((struct mount *mp, int rootrefs, int flags)); 584 int vget __P((struct vnode *vp, int lockflag, struct thread *td)); 585 void vgone __P((struct vnode *vp)); 586 void vgonel __P((struct vnode *vp, struct thread *td)); 587 void vhold __P((struct vnode *)); 588 int vinvalbuf __P((struct vnode *vp, int save, 589 struct thread *td, int slpflag, int slptimeo)); 590 int vtruncbuf __P((struct vnode *vp, struct thread *td, 591 off_t length, int blksize)); 592 void vprint __P((char *label, struct vnode *vp)); 593 int vrecycle __P((struct vnode *vp, struct lwkt_token *inter_lkp, 594 struct thread *td)); 595 int vn_close __P((struct vnode *vp, int flags, struct thread *td)); 596 int vn_isdisk __P((struct vnode *vp, int *errp)); 597 int vn_lock __P((struct vnode *vp, int flags, struct thread *td)); 598 #ifdef DEBUG_LOCKS 599 int debug_vn_lock __P((struct vnode *vp, int flags, struct thread *td, 600 const char *filename, int line)); 601 #define vn_lock(vp,flags,p) debug_vn_lock(vp,flags,p,__FILE__,__LINE__) 602 #endif 603 int vn_open __P((struct nameidata *ndp, int fmode, int cmode)); 604 void vn_pollevent __P((struct vnode *vp, int events)); 605 void vn_pollgone __P((struct vnode *vp)); 606 int vn_pollrecord __P((struct vnode *vp, struct thread *td, int events)); 607 int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 608 int len, off_t offset, enum uio_seg segflg, int ioflg, 609 struct ucred *cred, int *aresid, struct thread *td)); 610 int vn_rdwr_inchunks __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 611 int len, off_t offset, enum uio_seg segflg, int ioflg, 612 struct ucred *cred, int *aresid, struct thread *td)); 613 int vn_stat __P((struct vnode *vp, struct stat *sb, struct thread *td)); 614 dev_t vn_todev __P((struct vnode *vp)); 615 int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 616 int vfs_object_create __P((struct vnode *vp, struct thread *td)); 617 void vfs_timestamp __P((struct timespec *)); 618 int vn_writechk __P((struct vnode *vp)); 619 int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 620 int vop_stdislocked __P((struct vop_islocked_args *)); 621 int vop_stdlock __P((struct vop_lock_args *)); 622 int vop_stdunlock __P((struct vop_unlock_args *)); 623 int vop_noislocked __P((struct vop_islocked_args *)); 624 int vop_nolock __P((struct vop_lock_args *)); 625 int vop_nopoll __P((struct vop_poll_args *)); 626 int vop_nounlock __P((struct vop_unlock_args *)); 627 int vop_stdpathconf __P((struct vop_pathconf_args *)); 628 int vop_stdpoll __P((struct vop_poll_args *)); 629 int vop_revoke __P((struct vop_revoke_args *)); 630 int vop_sharedlock __P((struct vop_lock_args *)); 631 int vop_eopnotsupp __P((struct vop_generic_args *ap)); 632 int vop_ebadf __P((struct vop_generic_args *ap)); 633 int vop_einval __P((struct vop_generic_args *ap)); 634 int vop_enotty __P((struct vop_generic_args *ap)); 635 int vop_defaultop __P((struct vop_generic_args *ap)); 636 int vop_null __P((struct vop_generic_args *ap)); 637 int vop_panic __P((struct vop_generic_args *ap)); 638 int vop_stdcreatevobject __P((struct vop_createvobject_args *ap)); 639 int vop_stddestroyvobject __P((struct vop_destroyvobject_args *ap)); 640 int vop_stdgetvobject __P((struct vop_getvobject_args *ap)); 641 642 void vfree __P((struct vnode *vp)); 643 void vput __P((struct vnode *vp)); 644 void vrele __P((struct vnode *vp)); 645 void vref __P((struct vnode *vp)); 646 void vbusy __P((struct vnode *vp)); 647 648 extern vop_t **default_vnodeop_p; 649 extern vop_t **spec_vnodeop_p; 650 651 #endif /* _KERNEL */ 652 653 #endif /* !_SYS_VNODE_H_ */ 654