vnode_if.src revision 99484
1# 2# Copyright (c) 1992, 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_if.src 8.12 (Berkeley) 5/14/95 34# $FreeBSD: head/sys/kern/vnode_if.src 99484 2002-07-06 04:41:27Z jeff $ 35# 36 37# 38# Above each of the vop descriptors is a specification of the locking 39# protocol used by each vop call. The first column is the name of 40# the variable, the remaining three columns are in, out and error 41# respectively. The "in" column defines the lock state on input, 42# the "out" column defines the state on succesful return, and the 43# "error" column defines the locking state on error exit. 44# 45# The locking value can take the following values: 46# L: locked; not converted to type of lock. 47# A: any lock type. 48# S: locked with shared lock. 49# E: locked with exclusive lock for this process. 50# O: locked with exclusive lock for other process. 51# U: unlocked. 52# -: not applicable. vnode does not yet (or no longer) exists. 53# =: the same on input and output, may be either L or U. 54# X: locked if not nil. 55# 56 57# 58#% islocked vp = = = 59# 60vop_islocked { 61 IN struct vnode *vp; 62 IN struct thread *td; 63}; 64 65# 66#% lookup dvp L ? ? 67#% lookup vpp - L - 68# 69# XXX - the lookup locking protocol defies simple description and depends 70# on the flags and operation fields in the (cnp) structure. Note 71# especially that *vpp may equal dvp and both may be locked. 72# 73vop_lookup { 74 IN struct vnode *dvp; 75 INOUT struct vnode **vpp; 76 IN struct componentname *cnp; 77}; 78 79# 80#% cachedlookup dvp L ? ? 81#% cachedlookup vpp - L - 82# 83# This must be an exact copy of lookup. See kern/vfs_cache.c for details. 84# 85vop_cachedlookup { 86 IN struct vnode *dvp; 87 INOUT struct vnode **vpp; 88 IN struct componentname *cnp; 89}; 90 91# 92#% create dvp L L L 93#% create vpp - L - 94# 95vop_create { 96 IN struct vnode *dvp; 97 OUT struct vnode **vpp; 98 IN struct componentname *cnp; 99 IN struct vattr *vap; 100}; 101 102# 103#% whiteout dvp L L L 104# 105vop_whiteout { 106 IN struct vnode *dvp; 107 IN struct componentname *cnp; 108 IN int flags; 109}; 110 111# 112#% mknod dvp L L L 113#% mknod vpp - L - 114# 115vop_mknod { 116 IN struct vnode *dvp; 117 OUT struct vnode **vpp; 118 IN struct componentname *cnp; 119 IN struct vattr *vap; 120}; 121 122# 123#% open vp L L L 124# 125vop_open { 126 IN struct vnode *vp; 127 IN int mode; 128 IN struct ucred *cred; 129 IN struct thread *td; 130}; 131 132# 133#% close vp U U U 134# 135vop_close { 136 IN struct vnode *vp; 137 IN int fflag; 138 IN struct ucred *cred; 139 IN struct thread *td; 140}; 141 142# 143#% access vp L L L 144# 145vop_access { 146 IN struct vnode *vp; 147 IN int mode; 148 IN struct ucred *cred; 149 IN struct thread *td; 150}; 151 152# 153#% getattr vp = = = 154# 155# XXX: This should be A A A 156# 157vop_getattr { 158 IN struct vnode *vp; 159 OUT struct vattr *vap; 160 IN struct ucred *cred; 161 IN struct thread *td; 162}; 163 164# 165#% setattr vp L L L 166# 167vop_setattr { 168 IN struct vnode *vp; 169 IN struct vattr *vap; 170 IN struct ucred *cred; 171 IN struct thread *td; 172}; 173 174# 175#% read vp L L L 176# 177vop_read { 178 IN struct vnode *vp; 179 INOUT struct uio *uio; 180 IN int ioflag; 181 IN struct ucred *cred; 182}; 183 184# 185#% write vp L L L 186# 187vop_write { 188 IN struct vnode *vp; 189 INOUT struct uio *uio; 190 IN int ioflag; 191 IN struct ucred *cred; 192}; 193 194# 195#% lease vp = = = 196# 197vop_lease { 198 IN struct vnode *vp; 199 IN struct thread *td; 200 IN struct ucred *cred; 201 IN int flag; 202}; 203 204# 205#% ioctl vp U U U 206# 207vop_ioctl { 208 IN struct vnode *vp; 209 IN u_long command; 210 IN caddr_t data; 211 IN int fflag; 212 IN struct ucred *cred; 213 IN struct thread *td; 214}; 215 216# 217#% poll vp U U U 218# 219vop_poll { 220 IN struct vnode *vp; 221 IN int events; 222 IN struct ucred *cred; 223 IN struct thread *td; 224}; 225 226# 227#% kqfilter vp U U U 228# 229vop_kqfilter { 230 IN struct vnode *vp; 231 IN struct knote *kn; 232}; 233 234# 235#% revoke vp U U U 236# 237vop_revoke { 238 IN struct vnode *vp; 239 IN int flags; 240}; 241 242# 243#% fsync vp L L L 244# 245vop_fsync { 246 IN struct vnode *vp; 247 IN struct ucred *cred; 248 IN int waitfor; 249 IN struct thread *td; 250}; 251 252# 253#% remove dvp L L L 254#% remove vp L L L 255# 256vop_remove { 257 IN struct vnode *dvp; 258 IN struct vnode *vp; 259 IN struct componentname *cnp; 260}; 261 262# 263#% link tdvp L L L 264#% link vp U U U 265# 266vop_link { 267 IN struct vnode *tdvp; 268 IN struct vnode *vp; 269 IN struct componentname *cnp; 270}; 271 272# 273# rename fdvp U U U 274# rename fvp U U U 275# rename tdvp L U U 276# rename tvp X U U 277#! rename pre vop_rename_pre 278# 279vop_rename { 280 IN WILLRELE struct vnode *fdvp; 281 IN WILLRELE struct vnode *fvp; 282 IN struct componentname *fcnp; 283 IN WILLRELE struct vnode *tdvp; 284 IN WILLRELE struct vnode *tvp; 285 IN struct componentname *tcnp; 286}; 287 288# 289#% mkdir dvp L L L 290#% mkdir vpp - L - 291# 292vop_mkdir { 293 IN struct vnode *dvp; 294 OUT struct vnode **vpp; 295 IN struct componentname *cnp; 296 IN struct vattr *vap; 297}; 298 299# 300#% rmdir dvp L L L 301#% rmdir vp L L L 302# 303vop_rmdir { 304 IN struct vnode *dvp; 305 IN struct vnode *vp; 306 IN struct componentname *cnp; 307}; 308 309# 310#% symlink dvp L L L 311#% symlink vpp - L - 312# 313vop_symlink { 314 IN struct vnode *dvp; 315 OUT struct vnode **vpp; 316 IN struct componentname *cnp; 317 IN struct vattr *vap; 318 IN char *target; 319}; 320 321# 322#% readdir vp L L L 323# 324vop_readdir { 325 IN struct vnode *vp; 326 INOUT struct uio *uio; 327 IN struct ucred *cred; 328 INOUT int *eofflag; 329 OUT int *ncookies; 330 INOUT u_long **cookies; 331}; 332 333# 334#% readlink vp L L L 335# 336vop_readlink { 337 IN struct vnode *vp; 338 INOUT struct uio *uio; 339 IN struct ucred *cred; 340}; 341 342# 343#% inactive vp L U U 344# 345vop_inactive { 346 IN struct vnode *vp; 347 IN struct thread *td; 348}; 349 350# 351#% reclaim vp U U U 352# 353vop_reclaim { 354 IN struct vnode *vp; 355 IN struct thread *td; 356}; 357 358# 359#% lock vp ? ? ? 360# 361vop_lock { 362 IN struct vnode *vp; 363 IN int flags; 364 IN struct thread *td; 365}; 366 367# 368#% unlock vp L U L 369# 370vop_unlock { 371 IN struct vnode *vp; 372 IN int flags; 373 IN struct thread *td; 374}; 375 376# 377#% bmap vp L L L 378#% bmap vpp - U - 379# 380vop_bmap { 381 IN struct vnode *vp; 382 IN daddr_t bn; 383 OUT struct vnode **vpp; 384 IN daddr_t *bnp; 385 OUT int *runp; 386 OUT int *runb; 387}; 388 389# 390#% strategy vp L L L 391# 392vop_strategy { 393 IN struct vnode *vp; 394 IN struct buf *bp; 395}; 396 397# 398#% getwritemount vp = = = 399# 400vop_getwritemount { 401 IN struct vnode *vp; 402 OUT struct mount **mpp; 403}; 404 405# 406#% print vp = = = 407# 408vop_print { 409 IN struct vnode *vp; 410}; 411 412# 413#% pathconf vp L L L 414# 415vop_pathconf { 416 IN struct vnode *vp; 417 IN int name; 418 OUT register_t *retval; 419}; 420 421# 422#% advlock vp U U U 423# 424vop_advlock { 425 IN struct vnode *vp; 426 IN caddr_t id; 427 IN int op; 428 IN struct flock *fl; 429 IN int flags; 430}; 431 432# 433#% reallocblks vp L L L 434# 435vop_reallocblks { 436 IN struct vnode *vp; 437 IN struct cluster_save *buflist; 438}; 439 440# 441#% getpages vp L L L 442# 443vop_getpages { 444 IN struct vnode *vp; 445 IN vm_page_t *m; 446 IN int count; 447 IN int reqpage; 448 IN vm_ooffset_t offset; 449}; 450 451# 452#% putpages vp L L L 453# 454vop_putpages { 455 IN struct vnode *vp; 456 IN vm_page_t *m; 457 IN int count; 458 IN int sync; 459 IN int *rtvals; 460 IN vm_ooffset_t offset; 461}; 462 463# 464#% freeblks vp - - - 465# 466# This call is used by the filesystem to release blocks back to 467# device-driver. This is useful if the driver has a lengthy 468# erase handling or similar. 469# 470 471vop_freeblks { 472 IN struct vnode *vp; 473 IN daddr_t addr; 474 IN daddr_t length; 475}; 476 477# 478#% getacl vp L L L 479# 480vop_getacl { 481 IN struct vnode *vp; 482 IN acl_type_t type; 483 OUT struct acl *aclp; 484 IN struct ucred *cred; 485 IN struct thread *td; 486}; 487 488# 489#% setacl vp L L L 490# 491vop_setacl { 492 IN struct vnode *vp; 493 IN acl_type_t type; 494 IN struct acl *aclp; 495 IN struct ucred *cred; 496 IN struct thread *td; 497}; 498 499# 500#% aclcheck vp = = = 501# 502vop_aclcheck { 503 IN struct vnode *vp; 504 IN acl_type_t type; 505 IN struct acl *aclp; 506 IN struct ucred *cred; 507 IN struct thread *td; 508}; 509 510# 511#% getextattr vp L L L 512# 513vop_getextattr { 514 IN struct vnode *vp; 515 IN int attrnamespace; 516 IN const char *name; 517 INOUT struct uio *uio; 518 OUT size_t *size; 519 IN struct ucred *cred; 520 IN struct thread *td; 521}; 522 523# 524#% setextattr vp L L L 525# 526vop_setextattr { 527 IN struct vnode *vp; 528 IN int attrnamespace; 529 IN const char *name; 530 INOUT struct uio *uio; 531 IN struct ucred *cred; 532 IN struct thread *td; 533}; 534 535# 536#% createvobject vp L L L 537# 538vop_createvobject { 539 IN struct vnode *vp; 540 IN struct ucred *cred; 541 IN struct thread *td; 542}; 543 544# 545#% destroyvobject vp L L L 546# 547vop_destroyvobject { 548 IN struct vnode *vp; 549}; 550 551# 552#% getvobject vp L L L 553# 554vop_getvobject { 555 IN struct vnode *vp; 556 OUT struct vm_object **objpp; 557}; 558