The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/kern/vnode_if.src

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    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 # 4. 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.
   16 #
   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
   27 # SUCH DAMAGE.
   28 #
   29 #       @(#)vnode_if.src        8.12 (Berkeley) 5/14/95
   30 # $FreeBSD$
   31 #
   32 
   33 #
   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 succesful
   39 # return, and the "error" column defines the locking state on error exit.
   40 #
   41 # The locking value can take the following values:
   42 # L: locked; not converted to type of lock.
   43 # A: any lock type.
   44 # S: locked with shared lock.
   45 # E: locked with exclusive lock for this process.
   46 # O: locked with exclusive lock for other process.
   47 # U: unlocked.
   48 # -: not applicable.  vnode does not yet (or no longer) exists.
   49 # =: the same on input and output, may be either L or U.
   50 # X: locked if not nil.
   51 #
   52 # The paramater named "vpp" is assumed to be always used with double
   53 # indirection (**vpp) and that name is hard-codeed in vnode_if.awk !
   54 #
   55 # Lines starting with %! specify a pre or post-condition function
   56 # to call before/after the vop call.
   57 #
   58 # If other such parameters are introduced, they have to be added to
   59 # the AWK script at the head of the definition of "add_debug_code()".
   60 #
   61 
   62 vop_islocked {
   63         IN struct vnode *vp;
   64         IN struct thread *td;
   65 };
   66 
   67 %% lookup       dvp     L ? ?
   68 %% lookup       vpp     - L -
   69 %! lookup       pre     vop_lookup_pre
   70 %! lookup       post    vop_lookup_post
   71 
   72 # XXX - the lookup locking protocol defies simple description and depends
   73 #       on the flags and operation fields in the (cnp) structure.  Note
   74 #       especially that *vpp may equal dvp and both may be locked.
   75 
   76 vop_lookup {
   77         IN struct vnode *dvp;
   78         INOUT struct vnode **vpp;
   79         IN struct componentname *cnp;
   80 };
   81 
   82 %% cachedlookup dvp     L ? ?
   83 %% cachedlookup vpp     - L -
   84 
   85 # This must be an exact copy of lookup.  See kern/vfs_cache.c for details.
   86 
   87 vop_cachedlookup {
   88         IN struct vnode *dvp;
   89         INOUT struct vnode **vpp;
   90         IN struct componentname *cnp;
   91 };
   92 
   93 %% create       dvp     E E E
   94 %% create       vpp     - L -
   95 %! create       post    vop_create_post
   96 
   97 vop_create {
   98         IN struct vnode *dvp;
   99         OUT struct vnode **vpp;
  100         IN struct componentname *cnp;
  101         IN struct vattr *vap;
  102 };
  103 
  104 
  105 %% whiteout     dvp     E E E
  106 
  107 vop_whiteout {
  108         IN struct vnode *dvp;
  109         IN struct componentname *cnp;
  110         IN int flags;
  111 };
  112 
  113 
  114 %% mknod        dvp     E E E
  115 %% mknod        vpp     - L -
  116 %! mknod        post    vop_mknod_post
  117 
  118 vop_mknod {
  119         IN struct vnode *dvp;
  120         OUT struct vnode **vpp;
  121         IN struct componentname *cnp;
  122         IN struct vattr *vap;
  123 };
  124 
  125 
  126 %% open         vp      L L L
  127 
  128 vop_open {
  129         IN struct vnode *vp;
  130         IN int mode;
  131         IN struct ucred *cred;
  132         IN struct thread *td;
  133         IN struct file *fp;
  134 };
  135 
  136 
  137 %% close        vp      E E E
  138 
  139 vop_close {
  140         IN struct vnode *vp;
  141         IN int fflag;
  142         IN struct ucred *cred;
  143         IN struct thread *td;
  144 };
  145 
  146 
  147 %% access       vp      L L L
  148 
  149 vop_access {
  150         IN struct vnode *vp;
  151         IN int mode;
  152         IN struct ucred *cred;
  153         IN struct thread *td;
  154 };
  155 
  156 
  157 %% getattr      vp      L L L
  158 
  159 vop_getattr {
  160         IN struct vnode *vp;
  161         OUT struct vattr *vap;
  162         IN struct ucred *cred;
  163         IN struct thread *td;
  164 };
  165 
  166 
  167 %% setattr      vp      E E E
  168 %! setattr      post    vop_setattr_post
  169 
  170 vop_setattr {
  171         IN struct vnode *vp;
  172         IN struct vattr *vap;
  173         IN struct ucred *cred;
  174         IN struct thread *td;
  175 };
  176 
  177 
  178 %% read         vp      L L L
  179 
  180 vop_read {
  181         IN struct vnode *vp;
  182         INOUT struct uio *uio;
  183         IN int ioflag;
  184         IN struct ucred *cred;
  185 };
  186 
  187 
  188 %% write        vp      E E E
  189 %! write        pre     VOP_WRITE_PRE
  190 %! write        post    VOP_WRITE_POST
  191 
  192 vop_write {
  193         IN struct vnode *vp;
  194         INOUT struct uio *uio;
  195         IN int ioflag;
  196         IN struct ucred *cred;
  197 };
  198 
  199 
  200 %% lease        vp      = = =
  201 
  202 vop_lease {
  203         IN struct vnode *vp;
  204         IN struct thread *td;
  205         IN struct ucred *cred;
  206         IN int flag;
  207 };
  208 
  209 
  210 %% ioctl        vp      U U U
  211 
  212 vop_ioctl {
  213         IN struct vnode *vp;
  214         IN u_long command;
  215         IN void *data;
  216         IN int fflag;
  217         IN struct ucred *cred;
  218         IN struct thread *td;
  219 };
  220 
  221 
  222 %% poll vp      U U U
  223 
  224 vop_poll {
  225         IN struct vnode *vp;
  226         IN int events;
  227         IN struct ucred *cred;
  228         IN struct thread *td;
  229 };
  230 
  231 
  232 %% kqfilter     vp      U U U
  233 
  234 vop_kqfilter {
  235         IN struct vnode *vp;
  236         IN struct knote *kn;
  237 };
  238 
  239 
  240 %% revoke       vp      L L L
  241 
  242 vop_revoke {
  243         IN struct vnode *vp;
  244         IN int flags;
  245 };
  246 
  247 
  248 %% fsync        vp      E E E
  249 
  250 vop_fsync {
  251         IN struct vnode *vp;
  252         IN int waitfor;
  253         IN struct thread *td;
  254 };
  255 
  256 
  257 %% remove       dvp     E E E
  258 %% remove       vp      E E E
  259 %! remove       post    vop_remove_post
  260 
  261 vop_remove {
  262         IN struct vnode *dvp;
  263         IN struct vnode *vp;
  264         IN struct componentname *cnp;
  265 };
  266 
  267 
  268 %% link         tdvp    E E E
  269 %% link         vp      E E E
  270 %! link         post    vop_link_post
  271 
  272 vop_link {
  273         IN struct vnode *tdvp;
  274         IN struct vnode *vp;
  275         IN struct componentname *cnp;
  276 };
  277 
  278 
  279 %! rename       pre     vop_rename_pre
  280 %! rename       post    vop_rename_post
  281 
  282 vop_rename {
  283         IN WILLRELE struct vnode *fdvp;
  284         IN WILLRELE struct vnode *fvp;
  285         IN struct componentname *fcnp;
  286         IN WILLRELE struct vnode *tdvp;
  287         IN WILLRELE struct vnode *tvp;
  288         IN struct componentname *tcnp;
  289 };
  290 
  291 
  292 %% mkdir        dvp     E E E
  293 %% mkdir        vpp     - E -
  294 %! mkdir        post    vop_mkdir_post
  295 
  296 vop_mkdir {
  297         IN struct vnode *dvp;
  298         OUT struct vnode **vpp;
  299         IN struct componentname *cnp;
  300         IN struct vattr *vap;
  301 };
  302 
  303 
  304 %% rmdir        dvp     E E E
  305 %% rmdir        vp      E E E
  306 %! rmdir        post    vop_rmdir_post
  307 
  308 vop_rmdir {
  309         IN struct vnode *dvp;
  310         IN struct vnode *vp;
  311         IN struct componentname *cnp;
  312 };
  313 
  314 
  315 %% symlink      dvp     E E E
  316 %% symlink      vpp     - E -
  317 %! symlink      post    vop_symlink_post
  318 
  319 vop_symlink {
  320         IN struct vnode *dvp;
  321         OUT struct vnode **vpp;
  322         IN struct componentname *cnp;
  323         IN struct vattr *vap;
  324         IN char *target;
  325 };
  326 
  327 
  328 %% readdir      vp      L L L
  329 
  330 vop_readdir {
  331         IN struct vnode *vp;
  332         INOUT struct uio *uio;
  333         IN struct ucred *cred;
  334         INOUT int *eofflag;
  335         OUT int *ncookies;
  336         INOUT u_long **cookies;
  337 };
  338 
  339 
  340 %% readlink     vp      L L L
  341 
  342 vop_readlink {
  343         IN struct vnode *vp;
  344         INOUT struct uio *uio;
  345         IN struct ucred *cred;
  346 };
  347 
  348 
  349 %% inactive     vp      E E E
  350 
  351 vop_inactive {
  352         IN struct vnode *vp;
  353         IN struct thread *td;
  354 };
  355 
  356 
  357 %% reclaim      vp      E E E
  358 
  359 vop_reclaim {
  360         IN struct vnode *vp;
  361         IN struct thread *td;
  362 };
  363 
  364 
  365 %! lock1        pre     vop_lock_pre
  366 %! lock1        post    vop_lock_post
  367 
  368 vop_lock1 {
  369         IN struct vnode *vp;
  370         IN int flags;
  371         IN struct thread *td;
  372         IN char *file;
  373         IN int line;
  374 };
  375 
  376 
  377 %! unlock       pre     vop_unlock_pre
  378 %! unlock       post    vop_unlock_post
  379 
  380 vop_unlock {
  381         IN struct vnode *vp;
  382         IN int flags;
  383         IN struct thread *td;
  384 };
  385 
  386 
  387 %% bmap         vp      L L L
  388 
  389 vop_bmap {
  390         IN struct vnode *vp;
  391         IN daddr_t bn;
  392         OUT struct bufobj **bop;
  393         IN daddr_t *bnp;
  394         OUT int *runp;
  395         OUT int *runb;
  396 };
  397 
  398 
  399 %% strategy     vp      L L L
  400 %! strategy     pre     vop_strategy_pre
  401 
  402 vop_strategy {
  403         IN struct vnode *vp;
  404         IN struct buf *bp;
  405 };
  406 
  407 
  408 %% getwritemount vp     = = =
  409 
  410 vop_getwritemount {
  411         IN struct vnode *vp;
  412         OUT struct mount **mpp;
  413 };
  414 
  415 
  416 %% print        vp      = = =
  417 
  418 vop_print {
  419         IN struct vnode *vp;
  420 };
  421 
  422 
  423 %% pathconf     vp      L L L
  424 
  425 vop_pathconf {
  426         IN struct vnode *vp;
  427         IN int name;
  428         OUT register_t *retval;
  429 };
  430 
  431 
  432 %% advlock      vp      U U U
  433 
  434 vop_advlock {
  435         IN struct vnode *vp;
  436         IN void *id;
  437         IN int op;
  438         IN struct flock *fl;
  439         IN int flags;
  440 };
  441 
  442 
  443 %% advlockasync vp      U U U
  444 
  445 vop_advlockasync {
  446         IN struct vnode *vp;
  447         IN void *id;
  448         IN int op;
  449         IN struct flock *fl;
  450         IN int flags;
  451         IN struct task *task;   
  452         INOUT void **cookiep;
  453 };
  454 
  455 
  456 %% reallocblks  vp      E E E
  457 
  458 vop_reallocblks {
  459         IN struct vnode *vp;
  460         IN struct cluster_save *buflist;
  461 };
  462 
  463 
  464 %% getpages     vp      L L L
  465 
  466 vop_getpages {
  467         IN struct vnode *vp;
  468         IN vm_page_t *m;
  469         IN int count;
  470         IN int reqpage;
  471         IN vm_ooffset_t offset;
  472 };
  473 
  474 
  475 %% putpages     vp      E E E
  476 
  477 vop_putpages {
  478         IN struct vnode *vp;
  479         IN vm_page_t *m;
  480         IN int count;
  481         IN int sync;
  482         IN int *rtvals;
  483         IN vm_ooffset_t offset;
  484 };
  485 
  486 
  487 %% getacl       vp      L L L
  488 
  489 vop_getacl {
  490         IN struct vnode *vp;
  491         IN acl_type_t type;
  492         OUT struct acl *aclp;
  493         IN struct ucred *cred;
  494         IN struct thread *td;
  495 };
  496 
  497 
  498 %% setacl       vp      E E E
  499 
  500 vop_setacl {
  501         IN struct vnode *vp;
  502         IN acl_type_t type;
  503         IN struct acl *aclp;
  504         IN struct ucred *cred;
  505         IN struct thread *td;
  506 };
  507 
  508 
  509 %% aclcheck     vp      = = =
  510 
  511 vop_aclcheck {
  512         IN struct vnode *vp;
  513         IN acl_type_t type;
  514         IN struct acl *aclp;
  515         IN struct ucred *cred;
  516         IN struct thread *td;
  517 };
  518 
  519 
  520 %% closeextattr vp      L L L
  521 
  522 vop_closeextattr {
  523         IN struct vnode *vp;
  524         IN int commit;
  525         IN struct ucred *cred;
  526         IN struct thread *td;
  527 };
  528 
  529 
  530 %% getextattr   vp      L L L
  531 
  532 vop_getextattr {
  533         IN struct vnode *vp;
  534         IN int attrnamespace;
  535         IN const char *name;
  536         INOUT struct uio *uio;
  537         OUT size_t *size;
  538         IN struct ucred *cred;
  539         IN struct thread *td;
  540 };
  541 
  542 
  543 %% listextattr  vp      L L L
  544 
  545 vop_listextattr {
  546         IN struct vnode *vp;
  547         IN int attrnamespace;
  548         INOUT struct uio *uio;
  549         OUT size_t *size;
  550         IN struct ucred *cred;
  551         IN struct thread *td;
  552 };
  553 
  554 
  555 %% openextattr  vp      L L L
  556 
  557 vop_openextattr {
  558         IN struct vnode *vp;
  559         IN struct ucred *cred;
  560         IN struct thread *td;
  561 };
  562 
  563 
  564 %% deleteextattr        vp      E E E
  565 
  566 vop_deleteextattr {
  567         IN struct vnode *vp;
  568         IN int attrnamespace;
  569         IN const char *name;
  570         IN struct ucred *cred;
  571         IN struct thread *td;
  572 };
  573 
  574 
  575 %% setextattr   vp      E E E
  576 
  577 vop_setextattr {
  578         IN struct vnode *vp;
  579         IN int attrnamespace;
  580         IN const char *name;
  581         INOUT struct uio *uio;
  582         IN struct ucred *cred;
  583         IN struct thread *td;
  584 };
  585 
  586 
  587 %% setlabel     vp      E E E
  588 
  589 vop_setlabel {
  590         IN struct vnode *vp;
  591         IN struct label *label;
  592         IN struct ucred *cred;
  593         IN struct thread *td;
  594 };
  595 
  596 
  597 %% setlabel     vp      = = =
  598 
  599 vop_vptofh {
  600         IN struct vnode *vp;
  601         IN struct fid *fhp;
  602 };

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