2 # Copyright (c) 1992, 1993
3 # The Regents of the University of California. All rights reserved.
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
14 # may be used to endorse or promote products derived from this software
15 # without specific prior written permission.
17 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 # @(#)vnode_if.src 8.12 (Berkeley) 5/14/95
34 # Above each of the vop descriptors in lines starting with %%
35 # is a specification of the locking protocol used by each vop call.
36 # The first column is the name of the variable, the remaining three
37 # columns are in, out and error respectively. The "in" column defines
38 # the lock state on input, the "out" column defines the state on successful
39 # return, and the "error" column defines the locking state on error exit.
41 # The locking value can take the following values:
42 # L: locked; not converted to type of lock.
43 # E: locked with exclusive lock for this process.
45 # -: not applicable. vnode does not yet (or no longer) exists.
46 # =: the same on input and output, may be either L or U.
48 # The paramater named "vpp" is assumed to be always used with double
49 # indirection (**vpp) and that name is hard-coded in vnode_if.awk !
51 # Lines starting with %! specify a pre or post-condition function
52 # to call before/after the vop call.
54 # If other such parameters are introduced, they have to be added to
55 # the AWK script at the head of the definition of "add_debug_code()".
66 # XXX - the lookup locking protocol defies simple description and depends
67 # on the flags and operation fields in the (cnp) structure. Note
68 # especially that *vpp may equal dvp and both may be locked.
72 INOUT struct vnode **vpp;
73 IN struct componentname *cnp;
77 %% cachedlookup dvp L L L
78 %% cachedlookup vpp - L -
80 # This must be an exact copy of lookup. See kern/vfs_cache.c for details.
84 INOUT struct vnode **vpp;
85 IN struct componentname *cnp;
91 %! create post vop_create_post
95 OUT struct vnode **vpp;
96 IN struct componentname *cnp;
101 %% whiteout dvp E E E
104 IN struct vnode *dvp;
105 IN struct componentname *cnp;
112 %! mknod post vop_mknod_post
115 IN struct vnode *dvp;
116 OUT struct vnode **vpp;
117 IN struct componentname *cnp;
118 IN struct vattr *vap;
123 %! open post vop_open_post
128 IN struct ucred *cred;
129 IN struct thread *td;
135 %! close post vop_close_post
140 IN struct ucred *cred;
141 IN struct thread *td;
149 IN accmode_t accmode;
150 IN struct ucred *cred;
151 IN struct thread *td;
159 IN accmode_t accmode;
160 IN struct ucred *cred;
161 IN struct thread *td;
169 OUT struct vattr *vap;
170 IN struct ucred *cred;
175 %! setattr post vop_setattr_post
179 IN struct vattr *vap;
180 IN struct ucred *cred;
184 %% markatime vp L L L
192 %! read post vop_read_post
196 INOUT struct uio *uio;
198 IN struct ucred *cred;
203 %! write pre VOP_WRITE_PRE
204 %! write post VOP_WRITE_POST
208 INOUT struct uio *uio;
210 IN struct ucred *cred;
221 IN struct ucred *cred;
222 IN struct thread *td;
231 IN struct ucred *cred;
232 IN struct thread *td;
257 IN struct thread *td;
263 %! remove post vop_remove_post
266 IN struct vnode *dvp;
268 IN struct componentname *cnp;
274 %! link post vop_link_post
277 IN struct vnode *tdvp;
279 IN struct componentname *cnp;
283 %! rename pre vop_rename_pre
284 %! rename post vop_rename_post
287 IN WILLRELE struct vnode *fdvp;
288 IN WILLRELE struct vnode *fvp;
289 IN struct componentname *fcnp;
290 IN WILLRELE struct vnode *tdvp;
291 IN WILLRELE struct vnode *tvp;
292 IN struct componentname *tcnp;
298 %! mkdir post vop_mkdir_post
301 IN struct vnode *dvp;
302 OUT struct vnode **vpp;
303 IN struct componentname *cnp;
304 IN struct vattr *vap;
310 %! rmdir post vop_rmdir_post
313 IN struct vnode *dvp;
315 IN struct componentname *cnp;
321 %! symlink post vop_symlink_post
324 IN struct vnode *dvp;
325 OUT struct vnode **vpp;
326 IN struct componentname *cnp;
327 IN struct vattr *vap;
328 IN const char *target;
333 %! readdir post vop_readdir_post
337 INOUT struct uio *uio;
338 IN struct ucred *cred;
341 INOUT u_long **cookies;
349 INOUT struct uio *uio;
350 IN struct ucred *cred;
358 IN struct thread *td;
363 %! reclaim post vop_reclaim_post
367 IN struct thread *td;
371 %! lock1 pre vop_lock_pre
372 %! lock1 post vop_lock_post
382 %! unlock pre vop_unlock_pre
383 %! unlock post vop_unlock_post
396 OUT struct bufobj **bop;
404 %! strategy pre vop_strategy_pre
412 %% getwritemount vp = = =
416 OUT struct mount **mpp;
447 %% advlockasync vp U U U
455 IN struct task *task;
456 INOUT void **cookiep;
460 %% advlockpurge vp E E E
467 %% reallocblks vp E E E
471 IN struct cluster_save *buflist;
486 %% getpages_async vp L L L
494 IN vop_getpages_iodone_t *iodone;
515 OUT struct acl *aclp;
516 IN struct ucred *cred;
517 IN struct thread *td;
527 IN struct ucred *cred;
528 IN struct thread *td;
538 IN struct ucred *cred;
539 IN struct thread *td;
543 %% closeextattr vp L L L
548 IN struct ucred *cred;
549 IN struct thread *td;
553 %% getextattr vp L L L
557 IN int attrnamespace;
559 INOUT struct uio *uio;
561 IN struct ucred *cred;
562 IN struct thread *td;
566 %% listextattr vp L L L
570 IN int attrnamespace;
571 INOUT struct uio *uio;
573 IN struct ucred *cred;
574 IN struct thread *td;
578 %% openextattr vp L L L
582 IN struct ucred *cred;
583 IN struct thread *td;
587 %% deleteextattr vp E E E
588 %! deleteextattr post vop_deleteextattr_post
592 IN int attrnamespace;
594 IN struct ucred *cred;
595 IN struct thread *td;
599 %% setextattr vp E E E
600 %! setextattr post vop_setextattr_post
604 IN int attrnamespace;
606 INOUT struct uio *uio;
607 IN struct ucred *cred;
608 IN struct thread *td;
616 IN struct label *label;
617 IN struct ucred *cred;
618 IN struct thread *td;
635 OUT struct vnode **vpp;
636 IN struct ucred *cred;
665 IN struct unpcb *unpcb;
669 %% unp_connect vp L L L
673 OUT struct unpcb **unpcb;
677 %% unp_detach vp = = =
698 %% vop_unset_text vp = = =
705 %% add_writecount vp L L L
713 %% fdatasync vp L L L
717 IN struct thread *td;
721 # The VOPs below are spares at the end of the table to allow new VOPs to be
722 # added in stable branches without breaking the KBI. New VOPs in HEAD should
723 # be added above these spares. When merging a new VOP to a stable branch,
724 # the new VOP should replace one of the spares.