2 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/sys/vfsops.h,v 1.32 2008/06/19 23:27:36 dillon Exp $
38 * The vop_ops structure vectors all access to a filesystem. It contains a
39 * fixed set of vectors.
41 * In DragonFly the ultimate goal is to thread the VFS, which means that
42 * the dispatch functions will eventually be called from the context of
43 * a management thread rather then directly called by a process. This
44 * requires us to divorce direct process dependancies (in particular ioctl
45 * and UIO's). In addition, it is our intention to implement kernel
46 * level cache management and coherency in the vop_*() interfacing
49 * The number of management threads will depend on the VFS. The idea is
50 * to give a high performance VFS such as UFS at least one thread per cpu,
51 * and a low performance VFS such as CD9660 perhaps just one thread period.
52 * Blocking issues within the management thread are up to the VFS itself,
53 * but DragonFly will introduce a layer above the VFS to handle cacheable
54 * requests without having to enter the VFS (e.g. by making attribute
55 * and VM object information a permanent fixture of the vnode structure
56 * and accessing them directly).
58 * THE VOPOPS VECTORS SHOULD NEVER BE CALLED DIRECTLY! Instead always use
59 * the kernel helper procedures vop_*() to call a vopop. The kernel
60 * helper procedure will be responsible for handling the DragonFly messaging
61 * conversion when it occurs.
64 #ifndef _SYS_VFSOPS_H_
65 #define _SYS_VFSOPS_H_
71 #include <sys/buf.h> /* buf_cmd_t */
88 struct vop_generic_args
{
89 struct syslink_desc
*a_desc
; /* command descriptor for the call */
90 struct vop_ops
*a_ops
; /* operations vector for the call */
94 struct vop_old_lookup_args
{
95 struct vop_generic_args a_head
;
98 struct componentname
*a_cnp
;
101 struct vop_old_create_args
{
102 struct vop_generic_args a_head
;
104 struct vnode
**a_vpp
;
105 struct componentname
*a_cnp
;
109 struct vop_old_whiteout_args
{
110 struct vop_generic_args a_head
;
112 struct componentname
*a_cnp
;
116 struct vop_old_mknod_args
{
117 struct vop_generic_args a_head
;
119 struct vnode
**a_vpp
;
120 struct componentname
*a_cnp
;
124 struct vop_open_args
{
125 struct vop_generic_args a_head
;
128 struct ucred
*a_cred
;
129 struct file
*a_fp
; /* optional fp for fileops override */
132 struct vop_close_args
{
133 struct vop_generic_args a_head
;
138 struct vop_access_args
{
139 struct vop_generic_args a_head
;
142 struct ucred
*a_cred
;
145 struct vop_getattr_args
{
146 struct vop_generic_args a_head
;
151 struct vop_setattr_args
{
152 struct vop_generic_args a_head
;
155 struct ucred
*a_cred
;
158 struct vop_read_args
{
159 struct vop_generic_args a_head
;
163 struct ucred
*a_cred
;
166 struct vop_write_args
{
167 struct vop_generic_args a_head
;
171 struct ucred
*a_cred
;
174 struct vop_ioctl_args
{
175 struct vop_generic_args a_head
;
180 struct ucred
*a_cred
;
183 struct vop_poll_args
{
184 struct vop_generic_args a_head
;
187 struct ucred
*a_cred
;
190 struct vop_kqfilter_args
{
191 struct vop_generic_args a_head
;
196 struct vop_mmap_args
{
197 struct vop_generic_args a_head
;
200 struct ucred
*a_cred
;
203 struct vop_fsync_args
{
204 struct vop_generic_args a_head
;
209 struct vop_old_remove_args
{
210 struct vop_generic_args a_head
;
213 struct componentname
*a_cnp
;
216 struct vop_old_link_args
{
217 struct vop_generic_args a_head
;
218 struct vnode
*a_tdvp
;
220 struct componentname
*a_cnp
;
223 struct vop_old_rename_args
{
224 struct vop_generic_args a_head
;
225 struct vnode
*a_fdvp
;
227 struct componentname
*a_fcnp
;
228 struct vnode
*a_tdvp
;
230 struct componentname
*a_tcnp
;
233 struct vop_old_mkdir_args
{
234 struct vop_generic_args a_head
;
236 struct vnode
**a_vpp
;
237 struct componentname
*a_cnp
;
241 struct vop_old_rmdir_args
{
242 struct vop_generic_args a_head
;
245 struct componentname
*a_cnp
;
248 struct vop_old_symlink_args
{
249 struct vop_generic_args a_head
;
251 struct vnode
**a_vpp
;
252 struct componentname
*a_cnp
;
257 struct vop_readdir_args
{
258 struct vop_generic_args a_head
;
261 struct ucred
*a_cred
;
267 struct vop_readlink_args
{
268 struct vop_generic_args a_head
;
271 struct ucred
*a_cred
;
274 struct vop_inactive_args
{
275 struct vop_generic_args a_head
;
279 struct vop_reclaim_args
{
280 struct vop_generic_args a_head
;
284 struct vop_bmap_args
{
285 struct vop_generic_args a_head
;
291 buf_cmd_t a_cmd
; /* BUF_CMD_READ, BUF_CMD_WRITE, etc */
294 struct vop_strategy_args
{
295 struct vop_generic_args a_head
;
300 struct vop_print_args
{
301 struct vop_generic_args a_head
;
305 struct vop_pathconf_args
{
306 struct vop_generic_args a_head
;
309 register_t
*a_retval
;
312 struct vop_advlock_args
{
313 struct vop_generic_args a_head
;
321 struct vop_balloc_args
{
322 struct vop_generic_args a_head
;
326 struct ucred
*a_cred
;
331 struct vop_reallocblks_args
{
332 struct vop_generic_args a_head
;
334 struct cluster_save
*a_buflist
;
337 struct vop_getpages_args
{
338 struct vop_generic_args a_head
;
340 struct vm_page
**a_m
;
343 vm_ooffset_t a_offset
;
346 struct vop_putpages_args
{
347 struct vop_generic_args a_head
;
349 struct vm_page
**a_m
;
353 vm_ooffset_t a_offset
;
356 struct vop_freeblks_args
{
357 struct vop_generic_args a_head
;
363 struct vop_getacl_args
{
364 struct vop_generic_args a_head
;
368 struct ucred
*a_cred
;
371 struct vop_setacl_args
{
372 struct vop_generic_args a_head
;
376 struct ucred
*a_cred
;
379 struct vop_aclcheck_args
{
380 struct vop_generic_args a_head
;
384 struct ucred
*a_cred
;
387 struct vop_getextattr_args
{
388 struct vop_generic_args a_head
;
392 struct ucred
*a_cred
;
395 struct vop_setextattr_args
{
396 struct vop_generic_args a_head
;
400 struct ucred
*a_cred
;
403 struct vop_mountctl_args
{
404 struct vop_generic_args a_head
;
414 struct vop_markatime_args
{
415 struct vop_generic_args a_head
;
418 struct ucred
*a_cred
;
426 * Warning: a_dvp is only held, not ref'd. The target must still vget()
429 struct vop_nresolve_args
{
430 struct vop_generic_args a_head
;
431 struct nchandle
*a_nch
;
433 struct ucred
*a_cred
;
436 struct vop_nlookupdotdot_args
{
437 struct vop_generic_args a_head
;
439 struct vnode
**a_vpp
;
440 struct ucred
*a_cred
;
445 * Warning: a_dvp is only held, not ref'd. The target must still vget()
448 struct vop_ncreate_args
{
449 struct vop_generic_args a_head
;
450 struct nchandle
*a_nch
; /* locked namespace */
451 struct vnode
*a_dvp
; /* held directory vnode */
452 struct vnode
**a_vpp
; /* returned refd & locked */
453 struct ucred
*a_cred
;
458 * Warning: a_dvp is only held, not ref'd. The target must still vget()
461 struct vop_nmkdir_args
{
462 struct vop_generic_args a_head
;
463 struct nchandle
*a_nch
; /* locked namespace */
465 struct vnode
**a_vpp
; /* returned refd & locked */
466 struct ucred
*a_cred
;
471 * Warning: a_dvp is only held, not ref'd. The target must still vget()
474 struct vop_nmknod_args
{
475 struct vop_generic_args a_head
;
476 struct nchandle
*a_nch
;
478 struct vnode
**a_vpp
;
479 struct ucred
*a_cred
;
484 * Warning: a_dvp is only held, not ref'd. The target must still vget()
487 struct vop_nlink_args
{
488 struct vop_generic_args a_head
;
489 struct nchandle
*a_nch
;
492 struct ucred
*a_cred
;
496 * Warning: a_dvp is only held, not ref'd. The target must still vget()
499 struct vop_nsymlink_args
{
500 struct vop_generic_args a_head
;
501 struct nchandle
*a_nch
;
503 struct vnode
**a_vpp
;
504 struct ucred
*a_cred
;
510 * Warning: a_dvp is only held, not ref'd. The target must still vget()
513 struct vop_nwhiteout_args
{
514 struct vop_generic_args a_head
;
515 struct nchandle
*a_nch
;
517 struct ucred
*a_cred
;
522 * Warning: a_dvp is only held, not ref'd. The target must still vget()
525 struct vop_nremove_args
{
526 struct vop_generic_args a_head
;
527 struct nchandle
*a_nch
; /* locked namespace */
529 struct ucred
*a_cred
;
533 * Warning: a_dvp is only held, not ref'd. The target must still vget()
536 struct vop_nrmdir_args
{
537 struct vop_generic_args a_head
;
538 struct nchandle
*a_nch
; /* locked namespace */
540 struct ucred
*a_cred
;
544 * Warning: a_fdvp and a_tdvp are only held, not ref'd. The target must
547 struct vop_nrename_args
{
548 struct vop_generic_args a_head
;
549 struct nchandle
*a_fnch
; /* locked namespace / from */
550 struct nchandle
*a_tnch
; /* locked namespace / to */
551 struct vnode
*a_fdvp
;
552 struct vnode
*a_tdvp
;
553 struct ucred
*a_cred
;
557 * This structure is the post-compiled VOP operations vector. vop_ops are
558 * typically per-mount entities. The first section is used by our vop_*()
559 * function wrappers to implement hooks for per-mount management functions
560 * such as journaling and cache coherency protocols. The second section is
561 * the function dispatch for the VFSs. The functions are supposed to run
562 * in the context of the VFS's thread (if it has one) and should not be
563 * directly called from random kernel code. Note that VOCALL()s are direct
564 * calls used for chaining vop_ops structures from a VFS context.
568 struct mount
*vv_mount
;
571 #define vop_ops_first_field vop_default
572 int (*vop_default
)(struct vop_generic_args
*);
573 int (*vop_unused11
)(void *);
574 int (*vop_old_lookup
)(struct vop_old_lookup_args
*);
575 int (*vop_unused03
)(void *);
576 int (*vop_old_create
)(struct vop_old_create_args
*);
577 int (*vop_old_whiteout
)(struct vop_old_whiteout_args
*);
578 int (*vop_old_mknod
)(struct vop_old_mknod_args
*);
579 int (*vop_open
)(struct vop_open_args
*);
580 int (*vop_close
)(struct vop_close_args
*);
581 int (*vop_access
)(struct vop_access_args
*);
582 int (*vop_getattr
)(struct vop_getattr_args
*);
583 int (*vop_setattr
)(struct vop_setattr_args
*);
584 int (*vop_read
)(struct vop_read_args
*);
585 int (*vop_write
)(struct vop_write_args
*);
586 int (*vop_unused04
)(void *);
587 int (*vop_ioctl
)(struct vop_ioctl_args
*);
588 int (*vop_poll
)(struct vop_poll_args
*);
589 int (*vop_kqfilter
)(struct vop_kqfilter_args
*);
590 int (*vop_unused01
)(void *); /* was vop_revoke */
591 int (*vop_mmap
)(struct vop_mmap_args
*);
592 int (*vop_fsync
)(struct vop_fsync_args
*);
593 int (*vop_old_remove
)(struct vop_old_remove_args
*);
594 int (*vop_old_link
)(struct vop_old_link_args
*);
595 int (*vop_old_rename
)(struct vop_old_rename_args
*);
596 int (*vop_old_mkdir
)(struct vop_old_mkdir_args
*);
597 int (*vop_old_rmdir
)(struct vop_old_rmdir_args
*);
598 int (*vop_old_symlink
)(struct vop_old_symlink_args
*);
599 int (*vop_readdir
)(struct vop_readdir_args
*);
600 int (*vop_readlink
)(struct vop_readlink_args
*);
601 int (*vop_inactive
)(struct vop_inactive_args
*);
602 int (*vop_reclaim
)(struct vop_reclaim_args
*);
603 int (*vop_unused09
)(void *);
604 int (*vop_unused10
)(void *);
605 int (*vop_bmap
)(struct vop_bmap_args
*);
606 int (*vop_strategy
)(struct vop_strategy_args
*);
607 int (*vop_print
)(struct vop_print_args
*);
608 int (*vop_pathconf
)(struct vop_pathconf_args
*);
609 int (*vop_advlock
)(struct vop_advlock_args
*);
610 int (*vop_balloc
)(struct vop_balloc_args
*);
611 int (*vop_reallocblks
)(struct vop_reallocblks_args
*);
612 int (*vop_getpages
)(struct vop_getpages_args
*);
613 int (*vop_putpages
)(struct vop_putpages_args
*);
614 int (*vop_freeblks
)(struct vop_freeblks_args
*);
615 int (*vop_unused05
)(void *);
616 int (*vop_getacl
)(struct vop_getacl_args
*);
617 int (*vop_setacl
)(struct vop_setacl_args
*);
618 int (*vop_aclcheck
)(struct vop_aclcheck_args
*);
619 int (*vop_getextattr
)(struct vop_getextattr_args
*);
620 int (*vop_setextattr
)(struct vop_setextattr_args
*);
621 int (*vop_unused06
)(void *);
622 int (*vop_unused07
)(void *);
623 int (*vop_unused08
)(void *);
624 int (*vop_mountctl
)(struct vop_mountctl_args
*);
625 int (*vop_markatime
)(struct vop_markatime_args
*);
627 int (*vop_nresolve
)(struct vop_nresolve_args
*);
628 int (*vop_nlookupdotdot
)(struct vop_nlookupdotdot_args
*);
629 int (*vop_ncreate
)(struct vop_ncreate_args
*);
630 int (*vop_nmkdir
)(struct vop_nmkdir_args
*);
631 int (*vop_nmknod
)(struct vop_nmknod_args
*);
632 int (*vop_nlink
)(struct vop_nlink_args
*);
633 int (*vop_nsymlink
)(struct vop_nsymlink_args
*);
634 int (*vop_nwhiteout
)(struct vop_nwhiteout_args
*);
635 int (*vop_nremove
)(struct vop_nremove_args
*);
636 int (*vop_nrmdir
)(struct vop_nrmdir_args
*);
637 int (*vop_nrename
)(struct vop_nrename_args
*);
638 #define vop_ops_last_field vop_nrename
642 * vop_mountctl() operations
644 #define VFSSET_DETACH 0
645 #define VFSSET_ATTACH 1
648 * Kernel VOP arguments union, suitable for malloc / embedding in other
649 * structures. The vop_args_union can hold any VOP call argument structure.
650 * Note that vu_head is broken out.
652 union vop_args_union
{
653 struct vop_generic_args vu_head
;
654 struct vop_generic_args vu_default
;
655 struct vop_old_lookup_args vu_lookup
;
656 struct vop_old_create_args vu_create
;
657 struct vop_old_whiteout_args vu_whiteout
;
658 struct vop_old_mknod_args vu_mknod
;
659 struct vop_open_args vu_open
;
660 struct vop_close_args vu_close
;
661 struct vop_access_args vu_access
;
662 struct vop_getattr_args vu_getattr
;
663 struct vop_setattr_args vu_setattr
;
664 struct vop_read_args vu_read
;
665 struct vop_write_args vu_write
;
666 struct vop_ioctl_args vu_ioctl
;
667 struct vop_poll_args vu_poll
;
668 struct vop_kqfilter_args vu_kqfilter
;
669 struct vop_mmap_args vu_mmap
;
670 struct vop_fsync_args vu_fsync
;
671 struct vop_old_remove_args vu_remove
;
672 struct vop_old_link_args vu_link
;
673 struct vop_old_rename_args vu_rename
;
674 struct vop_old_mkdir_args vu_mkdir
;
675 struct vop_old_rmdir_args vu_rmdir
;
676 struct vop_old_symlink_args vu_symlink
;
677 struct vop_readdir_args vu_readdir
;
678 struct vop_readlink_args vu_readlink
;
679 struct vop_inactive_args vu_inactive
;
680 struct vop_reclaim_args vu_reclaim
;
681 struct vop_bmap_args vu_bmap
;
682 struct vop_strategy_args vu_strategy
;
683 struct vop_print_args vu_print
;
684 struct vop_pathconf_args vu_pathconf
;
685 struct vop_advlock_args vu_advlock
;
686 struct vop_balloc_args vu_balloc
;
687 struct vop_reallocblks_args vu_reallocblks
;
688 struct vop_getpages_args vu_getpages
;
689 struct vop_putpages_args vu_putpages
;
690 struct vop_freeblks_args vu_freeblks
;
691 struct vop_getacl_args vu_getacl
;
692 struct vop_setacl_args vu_setacl
;
693 struct vop_aclcheck_args vu_aclcheck
;
694 struct vop_getextattr_args vu_getextattr
;
695 struct vop_setextattr_args vu_setextattr
;
696 struct vop_mountctl_args vu_mountctl
;
697 struct vop_markatime_args vu_markatime
;
699 struct vop_nresolve_args vu_nresolve
;
700 struct vop_nlookupdotdot_args vu_nlookupdotdot
;
701 struct vop_ncreate_args vu_ncreate
;
702 struct vop_nmkdir_args vu_nmkdir
;
703 struct vop_nmknod_args vu_nmknod
;
704 struct vop_nlink_args vu_nlink
;
705 struct vop_nsymlink_args vu_nsymlink
;
706 struct vop_nwhiteout_args vu_nwhiteout
;
707 struct vop_nremove_args vu_nremove
;
708 struct vop_nrmdir_args vu_nrmdir
;
709 struct vop_nrename_args vu_nrename
;
715 * Kernel VOP call wrappers. These wrappers are responsible for wrapping
716 * the arguments in the appropriate VOP arguments structure, sending the
717 * message, and waiting for a reply. All kernel and VFS code should generally
718 * call these wrappers rather then attempt to call the operations vector
719 * routine directly in order to allow DragonFly to properly wrap the operation
720 * in a message and dispatch it to the correct thread.
722 int vop_old_lookup(struct vop_ops
*ops
, struct vnode
*dvp
,
723 struct vnode
**vpp
, struct componentname
*cnp
);
724 int vop_old_create(struct vop_ops
*ops
, struct vnode
*dvp
,
725 struct vnode
**vpp
, struct componentname
*cnp
,
727 int vop_old_whiteout(struct vop_ops
*ops
, struct vnode
*dvp
,
728 struct componentname
*cnp
, int flags
);
729 int vop_old_mknod(struct vop_ops
*ops
, struct vnode
*dvp
,
730 struct vnode
**vpp
, struct componentname
*cnp
,
732 int vop_open(struct vop_ops
*ops
, struct vnode
*vp
, int mode
,
733 struct ucred
*cred
, struct file
*file
);
734 int vop_close(struct vop_ops
*ops
, struct vnode
*vp
, int fflag
);
735 int vop_access(struct vop_ops
*ops
, struct vnode
*vp
, int mode
,
737 int vop_getattr(struct vop_ops
*ops
, struct vnode
*vp
, struct vattr
*vap
);
738 int vop_setattr(struct vop_ops
*ops
, struct vnode
*vp
, struct vattr
*vap
,
740 int vop_read(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
741 int ioflag
, struct ucred
*cred
);
742 int vop_write(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
743 int ioflag
, struct ucred
*cred
);
744 int vop_ioctl(struct vop_ops
*ops
, struct vnode
*vp
, u_long command
,
745 caddr_t data
, int fflag
, struct ucred
*cred
);
746 int vop_poll(struct vop_ops
*ops
, struct vnode
*vp
, int events
,
748 int vop_kqfilter(struct vop_ops
*ops
, struct vnode
*vp
, struct knote
*kn
);
749 int vop_mmap(struct vop_ops
*ops
, struct vnode
*vp
, int fflags
,
751 int vop_fsync(struct vop_ops
*ops
, struct vnode
*vp
, int waitfor
);
752 int vop_old_remove(struct vop_ops
*ops
, struct vnode
*dvp
,
753 struct vnode
*vp
, struct componentname
*cnp
);
754 int vop_old_link(struct vop_ops
*ops
, struct vnode
*tdvp
,
755 struct vnode
*vp
, struct componentname
*cnp
);
756 int vop_old_rename(struct vop_ops
*ops
, struct vnode
*fdvp
,
757 struct vnode
*fvp
, struct componentname
*fcnp
,
758 struct vnode
*tdvp
, struct vnode
*tvp
,
759 struct componentname
*tcnp
);
760 int vop_old_mkdir(struct vop_ops
*ops
, struct vnode
*dvp
,
761 struct vnode
**vpp
, struct componentname
*cnp
,
763 int vop_old_rmdir(struct vop_ops
*ops
, struct vnode
*dvp
,
764 struct vnode
*vp
, struct componentname
*cnp
);
765 int vop_old_symlink(struct vop_ops
*ops
, struct vnode
*dvp
,
766 struct vnode
**vpp
, struct componentname
*cnp
,
767 struct vattr
*vap
, char *target
);
768 int vop_readdir(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
769 struct ucred
*cred
, int *eofflag
,
770 int *ncookies
, off_t
**cookies
);
771 int vop_readlink(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
773 int vop_inactive(struct vop_ops
*ops
, struct vnode
*vp
);
774 int vop_reclaim(struct vop_ops
*ops
, struct vnode
*vp
);
775 int vop_bmap(struct vop_ops
*ops
, struct vnode
*vp
, off_t loffset
,
776 off_t
*doffsetp
, int *runp
, int *runb
, buf_cmd_t cmd
);
777 int vop_strategy(struct vop_ops
*ops
, struct vnode
*vp
, struct bio
*bio
);
778 int vop_print(struct vop_ops
*ops
, struct vnode
*vp
);
779 int vop_pathconf(struct vop_ops
*ops
, struct vnode
*vp
, int name
,
781 int vop_advlock(struct vop_ops
*ops
, struct vnode
*vp
, caddr_t id
, int op
,
782 struct flock
*fl
, int flags
);
783 int vop_balloc(struct vop_ops
*ops
, struct vnode
*vp
, off_t startoffset
,
784 int size
, struct ucred
*cred
, int flags
,
786 int vop_reallocblks(struct vop_ops
*ops
, struct vnode
*vp
,
787 struct cluster_save
*buflist
);
788 int vop_getpages(struct vop_ops
*ops
, struct vnode
*vp
, struct vm_page
**m
,
789 int count
, int reqpage
, vm_ooffset_t offset
);
790 int vop_putpages(struct vop_ops
*ops
, struct vnode
*vp
, struct vm_page
**m
,
791 int count
, int sync
, int *rtvals
, vm_ooffset_t offset
);
792 int vop_freeblks(struct vop_ops
*ops
, struct vnode
*vp
,
793 off_t offset
, int length
);
794 int vop_getacl(struct vop_ops
*ops
, struct vnode
*vp
, acl_type_t type
,
795 struct acl
*aclp
, struct ucred
*cred
);
796 int vop_setacl(struct vop_ops
*ops
, struct vnode
*vp
, acl_type_t type
,
797 struct acl
*aclp
, struct ucred
*cred
);
798 int vop_aclcheck(struct vop_ops
*ops
, struct vnode
*vp
, acl_type_t type
,
799 struct acl
*aclp
, struct ucred
*cred
);
800 int vop_getextattr(struct vop_ops
*ops
, struct vnode
*vp
, char *name
,
801 struct uio
*uio
, struct ucred
*cred
);
802 int vop_setextattr(struct vop_ops
*ops
, struct vnode
*vp
, char *name
,
803 struct uio
*uio
, struct ucred
*cred
);
804 int vop_mountctl(struct vop_ops
*ops
, int op
, struct file
*fp
,
805 const void *ctl
, int ctllen
, void *buf
, int buflen
, int *res
);
806 int vop_markatime(struct vop_ops
*ops
, struct vnode
*vp
, struct ucred
*cred
);
807 int vop_nresolve(struct vop_ops
*ops
, struct nchandle
*nch
,
808 struct vnode
*dvp
, struct ucred
*cred
);
809 int vop_nlookupdotdot(struct vop_ops
*ops
, struct vnode
*dvp
,
810 struct vnode
**vpp
, struct ucred
*cred
, char **fakename
);
811 int vop_ncreate(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
812 struct vnode
**vpp
, struct ucred
*cred
, struct vattr
*vap
);
813 int vop_nmkdir(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
814 struct vnode
**vpp
, struct ucred
*cred
, struct vattr
*vap
);
815 int vop_nmknod(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
816 struct vnode
**vpp
, struct ucred
*cred
, struct vattr
*vap
);
817 int vop_nlink(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
818 struct vnode
*vp
, struct ucred
*cred
);
819 int vop_nsymlink(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
820 struct vnode
**vpp
, struct ucred
*cred
,
821 struct vattr
*vap
, char *target
);
822 int vop_nwhiteout(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
823 struct ucred
*cred
, int flags
);
824 int vop_nremove(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
826 int vop_nrmdir(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
828 int vop_nrename(struct vop_ops
*ops
,
829 struct nchandle
*fnch
, struct nchandle
*tnch
,
830 struct vnode
*fdvp
, struct vnode
*tdvp
,
834 * Kernel VOP forwarding wrappers. These are called when a VFS such as
835 * nullfs or unionfs needs to push down into another VFS, changing the
836 * a_ops pointer and consequentially necessitating additional
839 * Note that this is different from vop_ops chaining within the same
840 * filesystem. When a filesystem chains a vop_ops it just uses VOCALLs.
842 int vop_vnoperate_ap(struct vop_generic_args
*ap
);
843 int vop_cache_operate_ap(struct vop_generic_args
*ap
);
844 int vop_journal_operate_ap(struct vop_generic_args
*ap
);
845 int vop_old_lookup_ap(struct vop_old_lookup_args
*ap
);
846 int vop_old_create_ap(struct vop_old_create_args
*ap
);
847 int vop_old_whiteout_ap(struct vop_old_whiteout_args
*ap
);
848 int vop_old_mknod_ap(struct vop_old_mknod_args
*ap
);
849 int vop_open_ap(struct vop_open_args
*ap
);
850 int vop_close_ap(struct vop_close_args
*ap
);
851 int vop_access_ap(struct vop_access_args
*ap
);
852 int vop_getattr_ap(struct vop_getattr_args
*ap
);
853 int vop_setattr_ap(struct vop_setattr_args
*ap
);
854 int vop_read_ap(struct vop_read_args
*ap
);
855 int vop_write_ap(struct vop_write_args
*ap
);
856 int vop_ioctl_ap(struct vop_ioctl_args
*ap
);
857 int vop_poll_ap(struct vop_poll_args
*ap
);
858 int vop_kqfilter_ap(struct vop_kqfilter_args
*ap
);
859 int vop_mmap_ap(struct vop_mmap_args
*ap
);
860 int vop_fsync_ap(struct vop_fsync_args
*ap
);
861 int vop_old_remove_ap(struct vop_old_remove_args
*ap
);
862 int vop_old_link_ap(struct vop_old_link_args
*ap
);
863 int vop_old_rename_ap(struct vop_old_rename_args
*ap
);
864 int vop_old_mkdir_ap(struct vop_old_mkdir_args
*ap
);
865 int vop_old_rmdir_ap(struct vop_old_rmdir_args
*ap
);
866 int vop_old_symlink_ap(struct vop_old_symlink_args
*ap
);
867 int vop_readdir_ap(struct vop_readdir_args
*ap
);
868 int vop_readlink_ap(struct vop_readlink_args
*ap
);
869 int vop_inactive_ap(struct vop_inactive_args
*ap
);
870 int vop_reclaim_ap(struct vop_reclaim_args
*ap
);
871 int vop_bmap_ap(struct vop_bmap_args
*ap
);
872 int vop_strategy_ap(struct vop_strategy_args
*ap
);
873 int vop_print_ap(struct vop_print_args
*ap
);
874 int vop_pathconf_ap(struct vop_pathconf_args
*ap
);
875 int vop_advlock_ap(struct vop_advlock_args
*ap
);
876 int vop_balloc_ap(struct vop_balloc_args
*ap
);
877 int vop_reallocblks_ap(struct vop_reallocblks_args
*ap
);
878 int vop_getpages_ap(struct vop_getpages_args
*ap
);
879 int vop_putpages_ap(struct vop_putpages_args
*ap
);
880 int vop_freeblks_ap(struct vop_freeblks_args
*ap
);
881 int vop_getacl_ap(struct vop_getacl_args
*ap
);
882 int vop_setacl_ap(struct vop_setacl_args
*ap
);
883 int vop_aclcheck_ap(struct vop_aclcheck_args
*ap
);
884 int vop_getextattr_ap(struct vop_getextattr_args
*ap
);
885 int vop_setextattr_ap(struct vop_setextattr_args
*ap
);
886 int vop_mountctl_ap(struct vop_mountctl_args
*ap
);
887 int vop_markatime_ap(struct vop_markatime_args
*ap
);
889 int vop_nresolve_ap(struct vop_nresolve_args
*ap
);
890 int vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args
*ap
);
891 int vop_ncreate_ap(struct vop_ncreate_args
*ap
);
892 int vop_nmkdir_ap(struct vop_nmkdir_args
*ap
);
893 int vop_nmknod_ap(struct vop_nmknod_args
*ap
);
894 int vop_nlink_ap(struct vop_nlink_args
*ap
);
895 int vop_nsymlink_ap(struct vop_nsymlink_args
*ap
);
896 int vop_nwhiteout_ap(struct vop_nwhiteout_args
*ap
);
897 int vop_nremove_ap(struct vop_nremove_args
*ap
);
898 int vop_nrmdir_ap(struct vop_nrmdir_args
*ap
);
899 int vop_nrename_ap(struct vop_nrename_args
*ap
);
902 * VOP operations descriptor. This is used by the vop_ops compiler
903 * to convert VFS vector arrays (typically in vfs/blah/blah_vnops.c)
904 * into a vop_ops operations vector.
906 extern struct syslink_desc vop_default_desc
;
907 extern struct syslink_desc vop_old_lookup_desc
;
908 extern struct syslink_desc vop_old_create_desc
;
909 extern struct syslink_desc vop_old_whiteout_desc
;
910 extern struct syslink_desc vop_old_mknod_desc
;
911 extern struct syslink_desc vop_open_desc
;
912 extern struct syslink_desc vop_close_desc
;
913 extern struct syslink_desc vop_access_desc
;
914 extern struct syslink_desc vop_getattr_desc
;
915 extern struct syslink_desc vop_setattr_desc
;
916 extern struct syslink_desc vop_read_desc
;
917 extern struct syslink_desc vop_write_desc
;
918 extern struct syslink_desc vop_ioctl_desc
;
919 extern struct syslink_desc vop_poll_desc
;
920 extern struct syslink_desc vop_kqfilter_desc
;
921 extern struct syslink_desc vop_mmap_desc
;
922 extern struct syslink_desc vop_fsync_desc
;
923 extern struct syslink_desc vop_old_remove_desc
;
924 extern struct syslink_desc vop_old_link_desc
;
925 extern struct syslink_desc vop_old_rename_desc
;
926 extern struct syslink_desc vop_old_mkdir_desc
;
927 extern struct syslink_desc vop_old_rmdir_desc
;
928 extern struct syslink_desc vop_old_symlink_desc
;
929 extern struct syslink_desc vop_readdir_desc
;
930 extern struct syslink_desc vop_readlink_desc
;
931 extern struct syslink_desc vop_inactive_desc
;
932 extern struct syslink_desc vop_reclaim_desc
;
933 extern struct syslink_desc vop_bmap_desc
;
934 extern struct syslink_desc vop_strategy_desc
;
935 extern struct syslink_desc vop_print_desc
;
936 extern struct syslink_desc vop_pathconf_desc
;
937 extern struct syslink_desc vop_advlock_desc
;
938 extern struct syslink_desc vop_balloc_desc
;
939 extern struct syslink_desc vop_reallocblks_desc
;
940 extern struct syslink_desc vop_getpages_desc
;
941 extern struct syslink_desc vop_putpages_desc
;
942 extern struct syslink_desc vop_freeblks_desc
;
943 extern struct syslink_desc vop_getacl_desc
;
944 extern struct syslink_desc vop_setacl_desc
;
945 extern struct syslink_desc vop_aclcheck_desc
;
946 extern struct syslink_desc vop_getextattr_desc
;
947 extern struct syslink_desc vop_setextattr_desc
;
948 extern struct syslink_desc vop_mountctl_desc
;
949 extern struct syslink_desc vop_markatime_desc
;
951 extern struct syslink_desc vop_nresolve_desc
;
952 extern struct syslink_desc vop_nlookupdotdot_desc
;
953 extern struct syslink_desc vop_ncreate_desc
;
954 extern struct syslink_desc vop_nmkdir_desc
;
955 extern struct syslink_desc vop_nmknod_desc
;
956 extern struct syslink_desc vop_nlink_desc
;
957 extern struct syslink_desc vop_nsymlink_desc
;
958 extern struct syslink_desc vop_nwhiteout_desc
;
959 extern struct syslink_desc vop_nremove_desc
;
960 extern struct syslink_desc vop_nrmdir_desc
;
961 extern struct syslink_desc vop_nrename_desc
;
966 * VOP_*() convenience macros extract the operations vector and make the
969 #define VOP_OPEN(vp, mode, cred, fp) \
970 vop_open(*(vp)->v_ops, vp, mode, cred, fp)
971 #define VOP_CLOSE(vp, fflag) \
972 vop_close(*(vp)->v_ops, vp, fflag)
973 #define VOP_ACCESS(vp, mode, cred) \
974 vop_access(*(vp)->v_ops, vp, mode, cred)
975 #define VOP_GETATTR(vp, vap) \
976 vop_getattr(*(vp)->v_ops, vp, vap)
977 #define VOP_SETATTR(vp, vap, cred) \
978 vop_setattr(*(vp)->v_ops, vp, vap, cred)
979 #define VOP_READ(vp, uio, ioflag, cred) \
980 vop_read(*(vp)->v_ops, vp, uio, ioflag, cred)
981 #define VOP_WRITE(vp, uio, ioflag, cred) \
982 vop_write(*(vp)->v_ops, vp, uio, ioflag, cred)
983 #define VOP_IOCTL(vp, command, data, fflag, cred) \
984 vop_ioctl(*(vp)->v_ops, vp, command, data, fflag, cred)
985 #define VOP_POLL(vp, events, cred) \
986 vop_poll(*(vp)->v_ops, vp, events, cred)
987 #define VOP_KQFILTER(vp, kn) \
988 vop_kqfilter(*(vp)->v_ops, vp, kn)
989 #define VOP_MMAP(vp, fflags, cred) \
990 vop_mmap(*(vp)->v_ops, vp, fflags, cred)
991 #define VOP_FSYNC(vp, waitfor) \
992 vop_fsync(*(vp)->v_ops, vp, waitfor)
993 #define VOP_READDIR(vp, uio, cred, eofflag, ncookies, cookies) \
994 vop_readdir(*(vp)->v_ops, vp, uio, cred, eofflag, ncookies, cookies)
995 #define VOP_READLINK(vp, uio, cred) \
996 vop_readlink(*(vp)->v_ops, vp, uio, cred)
997 #define VOP_INACTIVE(vp) \
998 vop_inactive(*(vp)->v_ops, vp)
999 #define VOP_RECLAIM(vp) \
1000 vop_reclaim(*(vp)->v_ops, vp)
1001 #define VOP_BMAP(vp, loff, doffp, runp, runb, cmd) \
1002 vop_bmap(*(vp)->v_ops, vp, loff, doffp, runp, runb, cmd)
1003 #define VOP_PRINT(vp) \
1004 vop_print(*(vp)->v_ops, vp)
1005 #define VOP_PATHCONF(vp, name, retval) \
1006 vop_pathconf(*(vp)->v_ops, vp, name, retval)
1007 #define VOP_ADVLOCK(vp, id, op, fl, flags) \
1008 vop_advlock(*(vp)->v_ops, vp, id, op, fl, flags)
1009 #define VOP_BALLOC(vp, offset, size, cred, flags, bpp) \
1010 vop_balloc(*(vp)->v_ops, vp, offset, size, cred, flags, bpp)
1011 #define VOP_REALLOCBLKS(vp, buflist) \
1012 vop_reallocblks(*(vp)->v_ops, vp, buflist)
1013 #define VOP_GETPAGES(vp, m, count, reqpage, off) \
1014 vop_getpages(*(vp)->v_ops, vp, m, count, reqpage, off)
1015 #define VOP_PUTPAGES(vp, m, count, sync, rtvals, off) \
1016 vop_putpages(*(vp)->v_ops, vp, m, count, sync, rtvals, off)
1017 #define VOP_FREEBLKS(vp, offset, length) \
1018 vop_freeblks(*(vp)->v_ops, vp, offset, length)
1019 #define VOP_GETACL(vp, type, aclp, cred) \
1020 vop_getacl(*(vp)->v_ops, vp, type, aclp, cred)
1021 #define VOP_SETACL(vp, type, aclp, cred) \
1022 vop_setacl(*(vp)->v_ops, vp, type, aclp, cred)
1023 #define VOP_ACLCHECK(vp, type, aclp, cred) \
1024 vop_aclcheck(*(vp)->v_ops, vp, type, aclp, cred)
1025 #define VOP_GETEXTATTR(vp, name, uio, cred) \
1026 vop_getextattr(*(vp)->v_ops, vp, name, uio, cred)
1027 #define VOP_SETEXTATTR(vp, name, uio, cred) \
1028 vop_setextattr(*(vp)->v_ops, vp, name, uio, cred)
1029 #define VOP_MARKATIME(vp, cred) \
1030 vop_markatime(*(vp)->v_ops, vp, cred)
1031 /* no VOP_VFSSET() */
1032 /* VOP_STRATEGY - does not exist, use vn_strategy() */
1035 * 'OLD' VOP calls. These calls may only be made by the new API
1036 * compatibility functions in kern/vfs_default.c. Attempting to
1037 * call these functions directly will confuse the namecache. These
1038 * calls are deprecated and being removed from the system and from
1041 #define VOP_OLD_LOOKUP(dvp, vpp, cnp) \
1042 vop_old_lookup(*(dvp)->v_ops, dvp, vpp, cnp)
1043 #define VOP_OLD_CREATE(dvp, vpp, cnp, vap) \
1044 vop_old_create(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1045 #define VOP_OLD_MKDIR(dvp, vpp, cnp, vap) \
1046 vop_old_mkdir(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1047 #define VOP_OLD_MKNOD(dvp, vpp, cnp, vap) \
1048 vop_old_mknod(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1049 #define VOP_OLD_LINK(tdvp, vp, cnp) \
1050 vop_old_link(*(tdvp)->v_ops, tdvp, vp, cnp)
1051 #define VOP_OLD_SYMLINK(dvp, vpp, cnp, vap, target) \
1052 vop_old_symlink(*(dvp)->v_ops, dvp, vpp, cnp, vap, target)
1053 #define VOP_OLD_WHITEOUT(dvp, cnp, flags) \
1054 vop_old_whiteout(*(dvp)->v_ops, dvp, cnp, flags)
1055 #define VOP_OLD_RENAME(fdvp, fvp, fcnp, tdvp, tvp, tcnp) \
1056 vop_old_rename(*(fdvp)->v_ops, fdvp, fvp, fcnp, tdvp, tvp, tcnp)
1057 #define VOP_OLD_RMDIR(dvp, vp, cnp) \
1058 vop_old_rmdir(*(dvp)->v_ops, dvp, vp, cnp)
1059 #define VOP_OLD_REMOVE(dvp, vp, cnp) \
1060 vop_old_remove(*(dvp)->v_ops, dvp, vp, cnp)
1063 * 'NEW' VOP calls. These calls use namespaces as an operational basis
1064 * rather then vnodes and replace the OLD calls. Eventually all VFS's
1065 * will support these calls. Those that do not fall through to compatibility
1066 * code in kern/vfs_default which does the magic required to call the old
1069 #define VOP_NRESOLVE(nch, dvp, cred) \
1070 vop_nresolve((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1071 #define VOP_NLOOKUPDOTDOT(dvp, vpp, cred, fakename) \
1072 vop_nlookupdotdot(*(dvp)->v_ops, dvp, vpp, cred, fakename)
1073 #define VOP_NCREATE(nch, dvp, vpp, cred, vap) \
1074 vop_ncreate((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1075 #define VOP_NMKDIR(nch, dvp, vpp, cred, vap) \
1076 vop_nmkdir((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1077 #define VOP_NMKNOD(nch, dvp, vpp, cred, vap) \
1078 vop_nmknod((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1079 #define VOP_NLINK(nch, dvp, vp, cred) \
1080 vop_nlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vp, cred)
1081 #define VOP_NSYMLINK(nch, dvp, vpp, cred, vap, target) \
1082 vop_nsymlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap, target)
1083 #define VOP_NWHITEOUT(nch, dvp, cred, flags) \
1084 vop_nwhiteout((nch)->mount->mnt_vn_use_ops, nch, dvp, cred, flags)
1085 #define VOP_NRENAME(fnch, tnch, fdvp, tdvp, cred) \
1086 vop_nrename((fnch)->mount->mnt_vn_use_ops, fnch, tnch, fdvp, tdvp, cred)
1087 #define VOP_NRMDIR(nch, dvp, cred) \
1088 vop_nrmdir((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1089 #define VOP_NREMOVE(nch, dvp, cred) \
1090 vop_nremove((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)