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
36 * The vop_ops structure vectors all access to a filesystem. It contains a
37 * fixed set of vectors.
39 * In DragonFly the ultimate goal is to thread the VFS, which means that
40 * the dispatch functions will eventually be called from the context of
41 * a management thread rather then directly called by a process. This
42 * requires us to divorce direct process dependancies (in particular ioctl
43 * and UIO's). In addition, it is our intention to implement kernel
44 * level cache management and coherency in the vop_*() interfacing
47 * The number of management threads will depend on the VFS. The idea is
48 * to give a high performance VFS such as UFS at least one thread per cpu,
49 * and a low performance VFS such as CD9660 perhaps just one thread period.
50 * Blocking issues within the management thread are up to the VFS itself,
51 * but DragonFly will introduce a layer above the VFS to handle cacheable
52 * requests without having to enter the VFS (e.g. by making attribute
53 * and VM object information a permanent fixture of the vnode structure
54 * and accessing them directly).
56 * THE VOPOPS VECTORS SHOULD NEVER BE CALLED DIRECTLY! Instead always use
57 * the kernel helper procedures vop_*() to call a vopop. The kernel
58 * helper procedure will be responsible for handling the DragonFly messaging
59 * conversion when it occurs.
62 #ifndef _SYS_VFSOPS_H_
63 #define _SYS_VFSOPS_H_
69 #include <sys/buf.h> /* buf_cmd_t */
72 #include <sys/fcntl.h> /* AT_EACCESS */
89 struct vop_generic_args
{
90 struct syslink_desc
*a_desc
; /* command descriptor for the call */
91 struct vop_ops
*a_ops
; /* operations vector for the call */
95 struct vop_old_lookup_args
{
96 struct vop_generic_args a_head
;
99 struct componentname
*a_cnp
;
102 struct vop_old_create_args
{
103 struct vop_generic_args a_head
;
105 struct vnode
**a_vpp
;
106 struct componentname
*a_cnp
;
110 struct vop_old_whiteout_args
{
111 struct vop_generic_args a_head
;
113 struct componentname
*a_cnp
;
117 struct vop_old_mknod_args
{
118 struct vop_generic_args a_head
;
120 struct vnode
**a_vpp
;
121 struct componentname
*a_cnp
;
125 struct vop_open_args
{
126 struct vop_generic_args a_head
;
129 struct ucred
*a_cred
;
130 struct file
*a_fp
; /* optional fp for fileops override */
133 struct vop_close_args
{
134 struct vop_generic_args a_head
;
137 struct file
*a_fp
; /* optional fp for fileops override */
140 struct vop_access_args
{
141 struct vop_generic_args a_head
;
143 int a_mode
; /* V* bitmask */
144 int a_flags
; /* AT_* bitmask */
145 struct ucred
*a_cred
;
148 struct vop_getattr_args
{
149 struct vop_generic_args a_head
;
154 struct vop_setattr_args
{
155 struct vop_generic_args a_head
;
158 struct ucred
*a_cred
;
161 struct vop_read_args
{
162 struct vop_generic_args a_head
;
166 struct ucred
*a_cred
;
169 struct vop_write_args
{
170 struct vop_generic_args a_head
;
174 struct ucred
*a_cred
;
177 struct vop_ioctl_args
{
178 struct vop_generic_args a_head
;
183 struct ucred
*a_cred
;
184 struct sysmsg
*a_sysmsg
;
187 struct vop_poll_args
{
188 struct vop_generic_args a_head
;
191 struct ucred
*a_cred
;
194 struct vop_kqfilter_args
{
195 struct vop_generic_args a_head
;
200 struct vop_mmap_args
{
201 struct vop_generic_args a_head
;
204 struct ucred
*a_cred
;
207 struct vop_fsync_args
{
208 struct vop_generic_args a_head
;
214 struct vop_old_remove_args
{
215 struct vop_generic_args a_head
;
218 struct componentname
*a_cnp
;
221 struct vop_old_link_args
{
222 struct vop_generic_args a_head
;
223 struct vnode
*a_tdvp
;
225 struct componentname
*a_cnp
;
228 struct vop_old_rename_args
{
229 struct vop_generic_args a_head
;
230 struct vnode
*a_fdvp
;
232 struct componentname
*a_fcnp
;
233 struct vnode
*a_tdvp
;
235 struct componentname
*a_tcnp
;
238 struct vop_old_mkdir_args
{
239 struct vop_generic_args a_head
;
241 struct vnode
**a_vpp
;
242 struct componentname
*a_cnp
;
246 struct vop_old_rmdir_args
{
247 struct vop_generic_args a_head
;
250 struct componentname
*a_cnp
;
253 struct vop_old_symlink_args
{
254 struct vop_generic_args a_head
;
256 struct vnode
**a_vpp
;
257 struct componentname
*a_cnp
;
262 struct vop_readdir_args
{
263 struct vop_generic_args a_head
;
266 struct ucred
*a_cred
;
272 struct vop_readlink_args
{
273 struct vop_generic_args a_head
;
276 struct ucred
*a_cred
;
279 struct vop_inactive_args
{
280 struct vop_generic_args a_head
;
284 struct vop_reclaim_args
{
285 struct vop_generic_args a_head
;
289 struct vop_bmap_args
{
290 struct vop_generic_args a_head
;
296 buf_cmd_t a_cmd
; /* BUF_CMD_READ, BUF_CMD_WRITE, etc */
299 struct vop_strategy_args
{
300 struct vop_generic_args a_head
;
305 struct vop_print_args
{
306 struct vop_generic_args a_head
;
310 struct vop_pathconf_args
{
311 struct vop_generic_args a_head
;
314 register_t
*a_retval
;
317 struct vop_advlock_args
{
318 struct vop_generic_args a_head
;
326 struct vop_balloc_args
{
327 struct vop_generic_args a_head
;
331 struct ucred
*a_cred
;
336 struct vop_reallocblks_args
{
337 struct vop_generic_args a_head
;
339 struct cluster_save
*a_buflist
;
342 struct vop_getpages_args
{
343 struct vop_generic_args a_head
;
345 struct vm_page
**a_m
;
348 vm_ooffset_t a_offset
;
352 struct vop_putpages_args
{
353 struct vop_generic_args a_head
;
355 struct vm_page
**a_m
;
359 vm_ooffset_t a_offset
;
362 struct vop_freeblks_args
{
363 struct vop_generic_args a_head
;
369 struct vop_getacl_args
{
370 struct vop_generic_args a_head
;
374 struct ucred
*a_cred
;
377 struct vop_setacl_args
{
378 struct vop_generic_args a_head
;
382 struct ucred
*a_cred
;
385 struct vop_aclcheck_args
{
386 struct vop_generic_args a_head
;
390 struct ucred
*a_cred
;
393 struct vop_getextattr_args
{
394 struct vop_generic_args a_head
;
399 struct ucred
*a_cred
;
402 struct vop_setextattr_args
{
403 struct vop_generic_args a_head
;
408 struct ucred
*a_cred
;
411 struct vop_mountctl_args
{
412 struct vop_generic_args a_head
;
423 struct vop_markatime_args
{
424 struct vop_generic_args a_head
;
427 struct ucred
*a_cred
;
435 * Warning: a_dvp is only held, not ref'd. The target must still vget()
438 struct vop_nresolve_args
{
439 struct vop_generic_args a_head
;
440 struct nchandle
*a_nch
;
442 struct ucred
*a_cred
;
445 struct vop_nlookupdotdot_args
{
446 struct vop_generic_args a_head
;
448 struct vnode
**a_vpp
;
449 struct ucred
*a_cred
;
454 * Warning: a_dvp is only held, not ref'd. The target must still vget()
457 struct vop_ncreate_args
{
458 struct vop_generic_args a_head
;
459 struct nchandle
*a_nch
; /* locked namespace */
460 struct vnode
*a_dvp
; /* held directory vnode */
461 struct vnode
**a_vpp
; /* returned refd & locked */
462 struct ucred
*a_cred
;
467 * Warning: a_dvp is only held, not ref'd. The target must still vget()
470 struct vop_nmkdir_args
{
471 struct vop_generic_args a_head
;
472 struct nchandle
*a_nch
; /* locked namespace */
474 struct vnode
**a_vpp
; /* returned refd & locked */
475 struct ucred
*a_cred
;
480 * Warning: a_dvp is only held, not ref'd. The target must still vget()
483 struct vop_nmknod_args
{
484 struct vop_generic_args a_head
;
485 struct nchandle
*a_nch
;
487 struct vnode
**a_vpp
;
488 struct ucred
*a_cred
;
493 * Warning: a_dvp is only held, not ref'd. The target must still vget()
496 struct vop_nlink_args
{
497 struct vop_generic_args a_head
;
498 struct nchandle
*a_nch
;
501 struct ucred
*a_cred
;
505 * Warning: a_dvp is only held, not ref'd. The target must still vget()
508 struct vop_nsymlink_args
{
509 struct vop_generic_args a_head
;
510 struct nchandle
*a_nch
;
512 struct vnode
**a_vpp
;
513 struct ucred
*a_cred
;
519 * Warning: a_dvp is only held, not ref'd. The target must still vget()
522 struct vop_nwhiteout_args
{
523 struct vop_generic_args a_head
;
524 struct nchandle
*a_nch
;
526 struct ucred
*a_cred
;
531 * Warning: a_dvp is only held, not ref'd. The target must still vget()
534 struct vop_nremove_args
{
535 struct vop_generic_args a_head
;
536 struct nchandle
*a_nch
; /* locked namespace */
538 struct ucred
*a_cred
;
542 * Warning: a_dvp is only held, not ref'd. The target must still vget()
545 struct vop_nrmdir_args
{
546 struct vop_generic_args a_head
;
547 struct nchandle
*a_nch
; /* locked namespace */
549 struct ucred
*a_cred
;
553 * Warning: a_fdvp and a_tdvp are only held, not ref'd. The target must
556 struct vop_nrename_args
{
557 struct vop_generic_args a_head
;
558 struct nchandle
*a_fnch
; /* locked namespace / from */
559 struct nchandle
*a_tnch
; /* locked namespace / to */
560 struct vnode
*a_fdvp
;
561 struct vnode
*a_tdvp
;
562 struct ucred
*a_cred
;
566 * This structure is the post-compiled VOP operations vector. vop_ops are
567 * typically per-mount entities. The first section is used by our vop_*()
568 * function wrappers to implement hooks for per-mount management functions
569 * such as journaling and cache coherency protocols. The second section is
570 * the function dispatch for the VFSs. The functions are supposed to run
571 * in the context of the VFS's thread (if it has one) and should not be
572 * directly called from random kernel code. Note that VOCALL()s are direct
573 * calls used for chaining vop_ops structures from a VFS context.
577 struct mount
*vv_mount
;
580 #define vop_ops_first_field vop_default
581 int (*vop_default
)(struct vop_generic_args
*);
582 int (*vop_unused11
)(void *);
583 int (*vop_old_lookup
)(struct vop_old_lookup_args
*);
584 int (*vop_unused03
)(void *);
585 int (*vop_old_create
)(struct vop_old_create_args
*);
586 int (*vop_old_whiteout
)(struct vop_old_whiteout_args
*);
587 int (*vop_old_mknod
)(struct vop_old_mknod_args
*);
588 int (*vop_open
)(struct vop_open_args
*);
589 int (*vop_close
)(struct vop_close_args
*);
590 int (*vop_access
)(struct vop_access_args
*);
591 int (*vop_getattr
)(struct vop_getattr_args
*);
592 int (*vop_setattr
)(struct vop_setattr_args
*);
593 int (*vop_read
)(struct vop_read_args
*);
594 int (*vop_write
)(struct vop_write_args
*);
595 int (*vop_unused04
)(void *);
596 int (*vop_ioctl
)(struct vop_ioctl_args
*);
597 int (*vop_poll
)(struct vop_poll_args
*);
598 int (*vop_kqfilter
)(struct vop_kqfilter_args
*);
599 int (*vop_unused01
)(void *); /* was vop_revoke */
600 int (*vop_mmap
)(struct vop_mmap_args
*);
601 int (*vop_fsync
)(struct vop_fsync_args
*);
602 int (*vop_old_remove
)(struct vop_old_remove_args
*);
603 int (*vop_old_link
)(struct vop_old_link_args
*);
604 int (*vop_old_rename
)(struct vop_old_rename_args
*);
605 int (*vop_old_mkdir
)(struct vop_old_mkdir_args
*);
606 int (*vop_old_rmdir
)(struct vop_old_rmdir_args
*);
607 int (*vop_old_symlink
)(struct vop_old_symlink_args
*);
608 int (*vop_readdir
)(struct vop_readdir_args
*);
609 int (*vop_readlink
)(struct vop_readlink_args
*);
610 int (*vop_inactive
)(struct vop_inactive_args
*);
611 int (*vop_reclaim
)(struct vop_reclaim_args
*);
612 int (*vop_unused09
)(void *);
613 int (*vop_unused10
)(void *);
614 int (*vop_bmap
)(struct vop_bmap_args
*);
615 int (*vop_strategy
)(struct vop_strategy_args
*);
616 int (*vop_print
)(struct vop_print_args
*);
617 int (*vop_pathconf
)(struct vop_pathconf_args
*);
618 int (*vop_advlock
)(struct vop_advlock_args
*);
619 int (*vop_balloc
)(struct vop_balloc_args
*);
620 int (*vop_reallocblks
)(struct vop_reallocblks_args
*);
621 int (*vop_getpages
)(struct vop_getpages_args
*);
622 int (*vop_putpages
)(struct vop_putpages_args
*);
623 int (*vop_freeblks
)(struct vop_freeblks_args
*);
624 int (*vop_unused05
)(void *);
625 int (*vop_getacl
)(struct vop_getacl_args
*);
626 int (*vop_setacl
)(struct vop_setacl_args
*);
627 int (*vop_aclcheck
)(struct vop_aclcheck_args
*);
628 int (*vop_getextattr
)(struct vop_getextattr_args
*);
629 int (*vop_setextattr
)(struct vop_setextattr_args
*);
630 int (*vop_unused06
)(void *);
631 int (*vop_unused07
)(void *);
632 int (*vop_unused08
)(void *);
633 int (*vop_mountctl
)(struct vop_mountctl_args
*);
634 int (*vop_markatime
)(struct vop_markatime_args
*);
636 int (*vop_nresolve
)(struct vop_nresolve_args
*);
637 int (*vop_nlookupdotdot
)(struct vop_nlookupdotdot_args
*);
638 int (*vop_ncreate
)(struct vop_ncreate_args
*);
639 int (*vop_nmkdir
)(struct vop_nmkdir_args
*);
640 int (*vop_nmknod
)(struct vop_nmknod_args
*);
641 int (*vop_nlink
)(struct vop_nlink_args
*);
642 int (*vop_nsymlink
)(struct vop_nsymlink_args
*);
643 int (*vop_nwhiteout
)(struct vop_nwhiteout_args
*);
644 int (*vop_nremove
)(struct vop_nremove_args
*);
645 int (*vop_nrmdir
)(struct vop_nrmdir_args
*);
646 int (*vop_nrename
)(struct vop_nrename_args
*);
647 #define vop_ops_last_field vop_nrename
651 * vop_mountctl() operations
653 #define VFSSET_DETACH 0
654 #define VFSSET_ATTACH 1
657 * Kernel VOP arguments union, suitable for malloc / embedding in other
658 * structures. The vop_args_union can hold any VOP call argument structure.
659 * Note that vu_head is broken out.
661 union vop_args_union
{
662 struct vop_generic_args vu_head
;
663 struct vop_generic_args vu_default
;
664 struct vop_old_lookup_args vu_lookup
;
665 struct vop_old_create_args vu_create
;
666 struct vop_old_whiteout_args vu_whiteout
;
667 struct vop_old_mknod_args vu_mknod
;
668 struct vop_open_args vu_open
;
669 struct vop_close_args vu_close
;
670 struct vop_access_args vu_access
;
671 struct vop_getattr_args vu_getattr
;
672 struct vop_setattr_args vu_setattr
;
673 struct vop_read_args vu_read
;
674 struct vop_write_args vu_write
;
675 struct vop_ioctl_args vu_ioctl
;
676 struct vop_poll_args vu_poll
;
677 struct vop_kqfilter_args vu_kqfilter
;
678 struct vop_mmap_args vu_mmap
;
679 struct vop_fsync_args vu_fsync
;
680 struct vop_old_remove_args vu_remove
;
681 struct vop_old_link_args vu_link
;
682 struct vop_old_rename_args vu_rename
;
683 struct vop_old_mkdir_args vu_mkdir
;
684 struct vop_old_rmdir_args vu_rmdir
;
685 struct vop_old_symlink_args vu_symlink
;
686 struct vop_readdir_args vu_readdir
;
687 struct vop_readlink_args vu_readlink
;
688 struct vop_inactive_args vu_inactive
;
689 struct vop_reclaim_args vu_reclaim
;
690 struct vop_bmap_args vu_bmap
;
691 struct vop_strategy_args vu_strategy
;
692 struct vop_print_args vu_print
;
693 struct vop_pathconf_args vu_pathconf
;
694 struct vop_advlock_args vu_advlock
;
695 struct vop_balloc_args vu_balloc
;
696 struct vop_reallocblks_args vu_reallocblks
;
697 struct vop_getpages_args vu_getpages
;
698 struct vop_putpages_args vu_putpages
;
699 struct vop_freeblks_args vu_freeblks
;
700 struct vop_getacl_args vu_getacl
;
701 struct vop_setacl_args vu_setacl
;
702 struct vop_aclcheck_args vu_aclcheck
;
703 struct vop_getextattr_args vu_getextattr
;
704 struct vop_setextattr_args vu_setextattr
;
705 struct vop_mountctl_args vu_mountctl
;
706 struct vop_markatime_args vu_markatime
;
708 struct vop_nresolve_args vu_nresolve
;
709 struct vop_nlookupdotdot_args vu_nlookupdotdot
;
710 struct vop_ncreate_args vu_ncreate
;
711 struct vop_nmkdir_args vu_nmkdir
;
712 struct vop_nmknod_args vu_nmknod
;
713 struct vop_nlink_args vu_nlink
;
714 struct vop_nsymlink_args vu_nsymlink
;
715 struct vop_nwhiteout_args vu_nwhiteout
;
716 struct vop_nremove_args vu_nremove
;
717 struct vop_nrmdir_args vu_nrmdir
;
718 struct vop_nrename_args vu_nrename
;
724 * Kernel VOP call wrappers. These wrappers are responsible for wrapping
725 * the arguments in the appropriate VOP arguments structure, sending the
726 * message, and waiting for a reply. All kernel and VFS code should generally
727 * call these wrappers rather then attempt to call the operations vector
728 * routine directly in order to allow DragonFly to properly wrap the operation
729 * in a message and dispatch it to the correct thread.
731 int vop_old_lookup(struct vop_ops
*ops
, struct vnode
*dvp
,
732 struct vnode
**vpp
, struct componentname
*cnp
);
733 int vop_old_create(struct vop_ops
*ops
, struct vnode
*dvp
,
734 struct vnode
**vpp
, struct componentname
*cnp
,
736 int vop_old_whiteout(struct vop_ops
*ops
, struct vnode
*dvp
,
737 struct componentname
*cnp
, int flags
);
738 int vop_old_mknod(struct vop_ops
*ops
, struct vnode
*dvp
,
739 struct vnode
**vpp
, struct componentname
*cnp
,
741 int vop_open(struct vop_ops
*ops
, struct vnode
*vp
, int mode
,
742 struct ucred
*cred
, struct file
*file
);
743 int vop_close(struct vop_ops
*ops
, struct vnode
*vp
, int fflag
,
745 int vop_access(struct vop_ops
*ops
, struct vnode
*vp
, int mode
, int flags
,
747 int vop_getattr(struct vop_ops
*ops
, struct vnode
*vp
, struct vattr
*vap
);
748 int vop_setattr(struct vop_ops
*ops
, struct vnode
*vp
, struct vattr
*vap
,
750 int vop_read(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
751 int ioflag
, struct ucred
*cred
);
752 int vop_write(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
753 int ioflag
, struct ucred
*cred
);
754 int vop_ioctl(struct vop_ops
*ops
, struct vnode
*vp
, u_long command
,
755 caddr_t data
, int fflag
, struct ucred
*cred
,
757 int vop_poll(struct vop_ops
*ops
, struct vnode
*vp
, int events
,
759 int vop_kqfilter(struct vop_ops
*ops
, struct vnode
*vp
, struct knote
*kn
);
760 int vop_mmap(struct vop_ops
*ops
, struct vnode
*vp
, int fflags
,
762 int vop_fsync(struct vop_ops
*ops
, struct vnode
*vp
, int waitfor
, int flags
);
763 int vop_old_remove(struct vop_ops
*ops
, struct vnode
*dvp
,
764 struct vnode
*vp
, struct componentname
*cnp
);
765 int vop_old_link(struct vop_ops
*ops
, struct vnode
*tdvp
,
766 struct vnode
*vp
, struct componentname
*cnp
);
767 int vop_old_rename(struct vop_ops
*ops
, struct vnode
*fdvp
,
768 struct vnode
*fvp
, struct componentname
*fcnp
,
769 struct vnode
*tdvp
, struct vnode
*tvp
,
770 struct componentname
*tcnp
);
771 int vop_old_mkdir(struct vop_ops
*ops
, struct vnode
*dvp
,
772 struct vnode
**vpp
, struct componentname
*cnp
,
774 int vop_old_rmdir(struct vop_ops
*ops
, struct vnode
*dvp
,
775 struct vnode
*vp
, struct componentname
*cnp
);
776 int vop_old_symlink(struct vop_ops
*ops
, struct vnode
*dvp
,
777 struct vnode
**vpp
, struct componentname
*cnp
,
778 struct vattr
*vap
, char *target
);
779 int vop_readdir(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
780 struct ucred
*cred
, int *eofflag
,
781 int *ncookies
, off_t
**cookies
);
782 int vop_readlink(struct vop_ops
*ops
, struct vnode
*vp
, struct uio
*uio
,
784 int vop_inactive(struct vop_ops
*ops
, struct vnode
*vp
);
785 int vop_reclaim(struct vop_ops
*ops
, struct vnode
*vp
);
786 int vop_bmap(struct vop_ops
*ops
, struct vnode
*vp
, off_t loffset
,
787 off_t
*doffsetp
, int *runp
, int *runb
, buf_cmd_t cmd
);
788 int vop_strategy(struct vop_ops
*ops
, struct vnode
*vp
, struct bio
*bio
);
789 int vop_print(struct vop_ops
*ops
, struct vnode
*vp
);
790 int vop_pathconf(struct vop_ops
*ops
, struct vnode
*vp
, int name
,
792 int vop_advlock(struct vop_ops
*ops
, struct vnode
*vp
, caddr_t id
, int op
,
793 struct flock
*fl
, int flags
);
794 int vop_balloc(struct vop_ops
*ops
, struct vnode
*vp
, off_t startoffset
,
795 int size
, struct ucred
*cred
, int flags
,
797 int vop_reallocblks(struct vop_ops
*ops
, struct vnode
*vp
,
798 struct cluster_save
*buflist
);
799 int vop_getpages(struct vop_ops
*ops
, struct vnode
*vp
, struct vm_page
**m
,
800 int count
, int reqpage
, vm_ooffset_t offset
, int seqaccess
);
801 int vop_putpages(struct vop_ops
*ops
, struct vnode
*vp
, struct vm_page
**m
,
802 int count
, int sync
, int *rtvals
, vm_ooffset_t offset
);
803 int vop_freeblks(struct vop_ops
*ops
, struct vnode
*vp
,
804 off_t offset
, int length
);
805 int vop_getacl(struct vop_ops
*ops
, struct vnode
*vp
, acl_type_t type
,
806 struct acl
*aclp
, struct ucred
*cred
);
807 int vop_setacl(struct vop_ops
*ops
, struct vnode
*vp
, acl_type_t type
,
808 struct acl
*aclp
, struct ucred
*cred
);
809 int vop_aclcheck(struct vop_ops
*ops
, struct vnode
*vp
, acl_type_t type
,
810 struct acl
*aclp
, struct ucred
*cred
);
812 int vop_getextattr(struct vop_ops
*ops
, struct vnode
*vp
, int attrnamespace
,
813 char *attrname
, struct uio
*uio
, struct ucred
*cred
);
814 int vop_setextattr(struct vop_ops
*ops
, struct vnode
*vp
, int attrnamespace
,
815 char *attrname
, struct uio
*uio
, struct ucred
*cred
);
816 int vop_mountctl(struct vop_ops
*ops
, struct vnode
*vp
, int op
,
817 struct file
*fp
, const void *ctl
, int ctllen
,
818 void *buf
, int buflen
, int *res
);
819 int vop_markatime(struct vop_ops
*ops
, struct vnode
*vp
, struct ucred
*cred
);
820 int vop_nresolve(struct vop_ops
*ops
, struct nchandle
*nch
,
821 struct vnode
*dvp
, struct ucred
*cred
);
822 int vop_nlookupdotdot(struct vop_ops
*ops
, struct vnode
*dvp
,
823 struct vnode
**vpp
, struct ucred
*cred
, char **fakename
);
824 int vop_ncreate(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
825 struct vnode
**vpp
, struct ucred
*cred
, struct vattr
*vap
);
826 int vop_nmkdir(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
827 struct vnode
**vpp
, struct ucred
*cred
, struct vattr
*vap
);
828 int vop_nmknod(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
829 struct vnode
**vpp
, struct ucred
*cred
, struct vattr
*vap
);
830 int vop_nlink(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
831 struct vnode
*vp
, struct ucred
*cred
);
832 int vop_nsymlink(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
833 struct vnode
**vpp
, struct ucred
*cred
,
834 struct vattr
*vap
, char *target
);
835 int vop_nwhiteout(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
836 struct ucred
*cred
, int flags
);
837 int vop_nremove(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
839 int vop_nrmdir(struct vop_ops
*ops
, struct nchandle
*nch
, struct vnode
*dvp
,
841 int vop_nrename(struct vop_ops
*ops
,
842 struct nchandle
*fnch
, struct nchandle
*tnch
,
843 struct vnode
*fdvp
, struct vnode
*tdvp
,
847 * Kernel VOP forwarding wrappers. These are called when a VFS such as
848 * nullfs needs to push down into another VFS, changing the
849 * a_ops pointer and consequentially necessitating additional
852 * Note that this is different from vop_ops chaining within the same
853 * filesystem. When a filesystem chains a vop_ops it just uses VOCALLs.
855 int vop_vnoperate_ap(struct vop_generic_args
*ap
);
856 int vop_cache_operate_ap(struct vop_generic_args
*ap
);
857 int vop_journal_operate_ap(struct vop_generic_args
*ap
);
858 int vop_old_lookup_ap(struct vop_old_lookup_args
*ap
);
859 int vop_old_create_ap(struct vop_old_create_args
*ap
);
860 int vop_old_whiteout_ap(struct vop_old_whiteout_args
*ap
);
861 int vop_old_mknod_ap(struct vop_old_mknod_args
*ap
);
862 int vop_open_ap(struct vop_open_args
*ap
);
863 int vop_close_ap(struct vop_close_args
*ap
);
864 int vop_access_ap(struct vop_access_args
*ap
);
865 int vop_getattr_ap(struct vop_getattr_args
*ap
);
866 int vop_setattr_ap(struct vop_setattr_args
*ap
);
867 int vop_read_ap(struct vop_read_args
*ap
);
868 int vop_write_ap(struct vop_write_args
*ap
);
869 int vop_ioctl_ap(struct vop_ioctl_args
*ap
);
870 int vop_poll_ap(struct vop_poll_args
*ap
);
871 int vop_kqfilter_ap(struct vop_kqfilter_args
*ap
);
872 int vop_mmap_ap(struct vop_mmap_args
*ap
);
873 int vop_fsync_ap(struct vop_fsync_args
*ap
);
874 int vop_old_remove_ap(struct vop_old_remove_args
*ap
);
875 int vop_old_link_ap(struct vop_old_link_args
*ap
);
876 int vop_old_rename_ap(struct vop_old_rename_args
*ap
);
877 int vop_old_mkdir_ap(struct vop_old_mkdir_args
*ap
);
878 int vop_old_rmdir_ap(struct vop_old_rmdir_args
*ap
);
879 int vop_old_symlink_ap(struct vop_old_symlink_args
*ap
);
880 int vop_readdir_ap(struct vop_readdir_args
*ap
);
881 int vop_readlink_ap(struct vop_readlink_args
*ap
);
882 int vop_inactive_ap(struct vop_inactive_args
*ap
);
883 int vop_reclaim_ap(struct vop_reclaim_args
*ap
);
884 int vop_bmap_ap(struct vop_bmap_args
*ap
);
885 int vop_strategy_ap(struct vop_strategy_args
*ap
);
886 int vop_print_ap(struct vop_print_args
*ap
);
887 int vop_pathconf_ap(struct vop_pathconf_args
*ap
);
888 int vop_advlock_ap(struct vop_advlock_args
*ap
);
889 int vop_balloc_ap(struct vop_balloc_args
*ap
);
890 int vop_reallocblks_ap(struct vop_reallocblks_args
*ap
);
891 int vop_getpages_ap(struct vop_getpages_args
*ap
);
892 int vop_putpages_ap(struct vop_putpages_args
*ap
);
893 int vop_freeblks_ap(struct vop_freeblks_args
*ap
);
894 int vop_getacl_ap(struct vop_getacl_args
*ap
);
895 int vop_setacl_ap(struct vop_setacl_args
*ap
);
896 int vop_aclcheck_ap(struct vop_aclcheck_args
*ap
);
897 int vop_getextattr_ap(struct vop_getextattr_args
*ap
);
898 int vop_setextattr_ap(struct vop_setextattr_args
*ap
);
899 int vop_mountctl_ap(struct vop_mountctl_args
*ap
);
900 int vop_markatime_ap(struct vop_markatime_args
*ap
);
902 int vop_nresolve_ap(struct vop_nresolve_args
*ap
);
903 int vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args
*ap
);
904 int vop_ncreate_ap(struct vop_ncreate_args
*ap
);
905 int vop_nmkdir_ap(struct vop_nmkdir_args
*ap
);
906 int vop_nmknod_ap(struct vop_nmknod_args
*ap
);
907 int vop_nlink_ap(struct vop_nlink_args
*ap
);
908 int vop_nsymlink_ap(struct vop_nsymlink_args
*ap
);
909 int vop_nwhiteout_ap(struct vop_nwhiteout_args
*ap
);
910 int vop_nremove_ap(struct vop_nremove_args
*ap
);
911 int vop_nrmdir_ap(struct vop_nrmdir_args
*ap
);
912 int vop_nrename_ap(struct vop_nrename_args
*ap
);
915 * VOP operations descriptor. This is used by the vop_ops compiler
916 * to convert VFS vector arrays (typically in vfs/blah/blah_vnops.c)
917 * into a vop_ops operations vector.
919 extern struct syslink_desc vop_default_desc
;
920 extern struct syslink_desc vop_old_lookup_desc
;
921 extern struct syslink_desc vop_old_create_desc
;
922 extern struct syslink_desc vop_old_whiteout_desc
;
923 extern struct syslink_desc vop_old_mknod_desc
;
924 extern struct syslink_desc vop_open_desc
;
925 extern struct syslink_desc vop_close_desc
;
926 extern struct syslink_desc vop_access_desc
;
927 extern struct syslink_desc vop_getattr_desc
;
928 extern struct syslink_desc vop_setattr_desc
;
929 extern struct syslink_desc vop_read_desc
;
930 extern struct syslink_desc vop_write_desc
;
931 extern struct syslink_desc vop_ioctl_desc
;
932 extern struct syslink_desc vop_poll_desc
;
933 extern struct syslink_desc vop_kqfilter_desc
;
934 extern struct syslink_desc vop_mmap_desc
;
935 extern struct syslink_desc vop_fsync_desc
;
936 extern struct syslink_desc vop_old_remove_desc
;
937 extern struct syslink_desc vop_old_link_desc
;
938 extern struct syslink_desc vop_old_rename_desc
;
939 extern struct syslink_desc vop_old_mkdir_desc
;
940 extern struct syslink_desc vop_old_rmdir_desc
;
941 extern struct syslink_desc vop_old_symlink_desc
;
942 extern struct syslink_desc vop_readdir_desc
;
943 extern struct syslink_desc vop_readlink_desc
;
944 extern struct syslink_desc vop_inactive_desc
;
945 extern struct syslink_desc vop_reclaim_desc
;
946 extern struct syslink_desc vop_bmap_desc
;
947 extern struct syslink_desc vop_strategy_desc
;
948 extern struct syslink_desc vop_print_desc
;
949 extern struct syslink_desc vop_pathconf_desc
;
950 extern struct syslink_desc vop_advlock_desc
;
951 extern struct syslink_desc vop_balloc_desc
;
952 extern struct syslink_desc vop_reallocblks_desc
;
953 extern struct syslink_desc vop_getpages_desc
;
954 extern struct syslink_desc vop_putpages_desc
;
955 extern struct syslink_desc vop_freeblks_desc
;
956 extern struct syslink_desc vop_getacl_desc
;
957 extern struct syslink_desc vop_setacl_desc
;
958 extern struct syslink_desc vop_aclcheck_desc
;
959 extern struct syslink_desc vop_getextattr_desc
;
960 extern struct syslink_desc vop_setextattr_desc
;
961 extern struct syslink_desc vop_mountctl_desc
;
962 extern struct syslink_desc vop_markatime_desc
;
964 extern struct syslink_desc vop_nresolve_desc
;
965 extern struct syslink_desc vop_nlookupdotdot_desc
;
966 extern struct syslink_desc vop_ncreate_desc
;
967 extern struct syslink_desc vop_nmkdir_desc
;
968 extern struct syslink_desc vop_nmknod_desc
;
969 extern struct syslink_desc vop_nlink_desc
;
970 extern struct syslink_desc vop_nsymlink_desc
;
971 extern struct syslink_desc vop_nwhiteout_desc
;
972 extern struct syslink_desc vop_nremove_desc
;
973 extern struct syslink_desc vop_nrmdir_desc
;
974 extern struct syslink_desc vop_nrename_desc
;
979 * VOP_*() convenience macros extract the operations vector and make the
982 #define VOP_OPEN(vp, mode, cred, fp) \
983 vop_open(*(vp)->v_ops, vp, mode, cred, fp)
984 #define VOP_CLOSE(vp, fflag, fp) \
985 vop_close(*(vp)->v_ops, vp, fflag, fp)
986 #define VOP_ACCESS(vp, mode, cred) \
987 vop_access(*(vp)->v_ops, vp, mode, 0, cred)
988 #define VOP_EACCESS(vp, mode, cred) \
989 vop_access(*(vp)->v_ops, vp, mode, AT_EACCESS, cred)
990 #define VOP_ACCESS_FLAGS(vp, mode, flags, cred) \
991 vop_access(*(vp)->v_ops, vp, mode, flags, cred)
992 #define VOP_GETATTR(vp, vap) \
993 vop_getattr(*(vp)->v_ops, vp, vap)
994 #define VOP_SETATTR(vp, vap, cred) \
995 vop_setattr(*(vp)->v_ops, vp, vap, cred)
996 #define VOP_READ(vp, uio, ioflag, cred) \
997 vop_read(*(vp)->v_ops, vp, uio, ioflag, cred)
998 #define VOP_WRITE(vp, uio, ioflag, cred) \
999 vop_write(*(vp)->v_ops, vp, uio, ioflag, cred)
1000 #define VOP_IOCTL(vp, command, data, fflag, cred, msg) \
1001 vop_ioctl(*(vp)->v_ops, vp, command, data, fflag, cred, msg)
1002 #define VOP_POLL(vp, events, cred) \
1003 vop_poll(*(vp)->v_ops, vp, events, cred)
1004 #define VOP_KQFILTER(vp, kn) \
1005 vop_kqfilter(*(vp)->v_ops, vp, kn)
1006 #define VOP_MMAP(vp, fflags, cred) \
1007 vop_mmap(*(vp)->v_ops, vp, fflags, cred)
1008 #define VOP_FSYNC(vp, waitfor, flags) \
1009 vop_fsync(*(vp)->v_ops, vp, waitfor, flags)
1010 #define VOP_READDIR(vp, uio, cred, eofflag, ncookies, cookies) \
1011 vop_readdir(*(vp)->v_ops, vp, uio, cred, eofflag, ncookies, cookies)
1012 #define VOP_READLINK(vp, uio, cred) \
1013 vop_readlink(*(vp)->v_ops, vp, uio, cred)
1014 #define VOP_INACTIVE(vp) \
1015 vop_inactive(*(vp)->v_ops, vp)
1016 #define VOP_RECLAIM(vp) \
1017 vop_reclaim(*(vp)->v_ops, vp)
1018 #define VOP_BMAP(vp, loff, doffp, runp, runb, cmd) \
1019 vop_bmap(*(vp)->v_ops, vp, loff, doffp, runp, runb, cmd)
1020 #define VOP_PRINT(vp) \
1021 vop_print(*(vp)->v_ops, vp)
1022 #define VOP_PATHCONF(vp, name, retval) \
1023 vop_pathconf(*(vp)->v_ops, vp, name, retval)
1024 #define VOP_ADVLOCK(vp, id, op, fl, flags) \
1025 vop_advlock(*(vp)->v_ops, vp, id, op, fl, flags)
1026 #define VOP_BALLOC(vp, offset, size, cred, flags, bpp) \
1027 vop_balloc(*(vp)->v_ops, vp, offset, size, cred, flags, bpp)
1028 #define VOP_REALLOCBLKS(vp, buflist) \
1029 vop_reallocblks(*(vp)->v_ops, vp, buflist)
1030 #define VOP_GETPAGES(vp, m, count, reqpage, off, seqaccess) \
1031 vop_getpages(*(vp)->v_ops, vp, m, count, reqpage, off, seqaccess)
1032 #define VOP_PUTPAGES(vp, m, count, sync, rtvals, off) \
1033 vop_putpages(*(vp)->v_ops, vp, m, count, sync, rtvals, off)
1034 #define VOP_FREEBLKS(vp, offset, length) \
1035 vop_freeblks(*(vp)->v_ops, vp, offset, length)
1036 #define VOP_GETACL(vp, type, aclp, cred) \
1037 vop_getacl(*(vp)->v_ops, vp, type, aclp, cred)
1038 #define VOP_SETACL(vp, type, aclp, cred) \
1039 vop_setacl(*(vp)->v_ops, vp, type, aclp, cred)
1040 #define VOP_ACLCHECK(vp, type, aclp, cred) \
1041 vop_aclcheck(*(vp)->v_ops, vp, type, aclp, cred)
1042 #define VOP_GETEXTATTR(vp, attrnamespace, attrname, uio, cred) \
1043 vop_getextattr(*(vp)->v_ops, vp, attrnamespace, attrname, uio, cred)
1044 #define VOP_SETEXTATTR(vp, attrnamespace, attrname, uio, cred) \
1045 vop_setextattr(*(vp)->v_ops, vp, attrnamespace, attrname, uio, cred)
1046 #define VOP_MARKATIME(vp, cred) \
1047 vop_markatime(*(vp)->v_ops, vp, cred)
1048 /* no VOP_VFSSET() */
1049 /* VOP_STRATEGY - does not exist, use vn_strategy() */
1052 * 'OLD' VOP calls. These calls may only be made by the new API
1053 * compatibility functions in kern/vfs_default.c. Attempting to
1054 * call these functions directly will confuse the namecache. These
1055 * calls are deprecated and being removed from the system and from
1058 #define VOP_OLD_LOOKUP(dvp, vpp, cnp) \
1059 vop_old_lookup(*(dvp)->v_ops, dvp, vpp, cnp)
1060 #define VOP_OLD_CREATE(dvp, vpp, cnp, vap) \
1061 vop_old_create(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1062 #define VOP_OLD_MKDIR(dvp, vpp, cnp, vap) \
1063 vop_old_mkdir(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1064 #define VOP_OLD_MKNOD(dvp, vpp, cnp, vap) \
1065 vop_old_mknod(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1066 #define VOP_OLD_LINK(tdvp, vp, cnp) \
1067 vop_old_link(*(tdvp)->v_ops, tdvp, vp, cnp)
1068 #define VOP_OLD_SYMLINK(dvp, vpp, cnp, vap, target) \
1069 vop_old_symlink(*(dvp)->v_ops, dvp, vpp, cnp, vap, target)
1070 #define VOP_OLD_WHITEOUT(dvp, cnp, flags) \
1071 vop_old_whiteout(*(dvp)->v_ops, dvp, cnp, flags)
1072 #define VOP_OLD_RENAME(fdvp, fvp, fcnp, tdvp, tvp, tcnp) \
1073 vop_old_rename(*(fdvp)->v_ops, fdvp, fvp, fcnp, tdvp, tvp, tcnp)
1074 #define VOP_OLD_RMDIR(dvp, vp, cnp) \
1075 vop_old_rmdir(*(dvp)->v_ops, dvp, vp, cnp)
1076 #define VOP_OLD_REMOVE(dvp, vp, cnp) \
1077 vop_old_remove(*(dvp)->v_ops, dvp, vp, cnp)
1080 * 'NEW' VOP calls. These calls use namespaces as an operational basis
1081 * rather then vnodes and replace the OLD calls. Eventually all VFS's
1082 * will support these calls. Those that do not fall through to compatibility
1083 * code in kern/vfs_default which does the magic required to call the old
1086 #define VOP_NRESOLVE(nch, dvp, cred) \
1087 vop_nresolve((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1088 #define VOP_NLOOKUPDOTDOT(dvp, vpp, cred, fakename) \
1089 vop_nlookupdotdot(*(dvp)->v_ops, dvp, vpp, cred, fakename)
1090 #define VOP_NCREATE(nch, dvp, vpp, cred, vap) \
1091 vop_ncreate((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1092 #define VOP_NMKDIR(nch, dvp, vpp, cred, vap) \
1093 vop_nmkdir((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1094 #define VOP_NMKNOD(nch, dvp, vpp, cred, vap) \
1095 vop_nmknod((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1096 #define VOP_NLINK(nch, dvp, vp, cred) \
1097 vop_nlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vp, cred)
1098 #define VOP_NSYMLINK(nch, dvp, vpp, cred, vap, target) \
1099 vop_nsymlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap, target)
1100 #define VOP_NWHITEOUT(nch, dvp, cred, flags) \
1101 vop_nwhiteout((nch)->mount->mnt_vn_use_ops, nch, dvp, cred, flags)
1102 #define VOP_NRENAME(fnch, tnch, fdvp, tdvp, cred) \
1103 vop_nrename((fnch)->mount->mnt_vn_use_ops, fnch, tnch, fdvp, tdvp, cred)
1104 #define VOP_NRMDIR(nch, dvp, cred) \
1105 vop_nrmdir((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1106 #define VOP_NREMOVE(nch, dvp, cred) \
1107 vop_nremove((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)