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;
141 int a_mode; /* V* bitmask */
142 int a_flags; /* AT_* bitmask */
143 struct ucred *a_cred;
146 struct vop_getattr_args {
147 struct vop_generic_args a_head;
152 struct vop_setattr_args {
153 struct vop_generic_args a_head;
156 struct ucred *a_cred;
159 struct vop_read_args {
160 struct vop_generic_args a_head;
164 struct ucred *a_cred;
167 struct vop_write_args {
168 struct vop_generic_args a_head;
172 struct ucred *a_cred;
175 struct vop_ioctl_args {
176 struct vop_generic_args a_head;
181 struct ucred *a_cred;
184 struct vop_poll_args {
185 struct vop_generic_args a_head;
188 struct ucred *a_cred;
191 struct vop_kqfilter_args {
192 struct vop_generic_args a_head;
197 struct vop_mmap_args {
198 struct vop_generic_args a_head;
201 struct ucred *a_cred;
204 struct vop_fsync_args {
205 struct vop_generic_args a_head;
210 struct vop_old_remove_args {
211 struct vop_generic_args a_head;
214 struct componentname *a_cnp;
217 struct vop_old_link_args {
218 struct vop_generic_args a_head;
219 struct vnode *a_tdvp;
221 struct componentname *a_cnp;
224 struct vop_old_rename_args {
225 struct vop_generic_args a_head;
226 struct vnode *a_fdvp;
228 struct componentname *a_fcnp;
229 struct vnode *a_tdvp;
231 struct componentname *a_tcnp;
234 struct vop_old_mkdir_args {
235 struct vop_generic_args a_head;
237 struct vnode **a_vpp;
238 struct componentname *a_cnp;
242 struct vop_old_rmdir_args {
243 struct vop_generic_args a_head;
246 struct componentname *a_cnp;
249 struct vop_old_symlink_args {
250 struct vop_generic_args a_head;
252 struct vnode **a_vpp;
253 struct componentname *a_cnp;
258 struct vop_readdir_args {
259 struct vop_generic_args a_head;
262 struct ucred *a_cred;
268 struct vop_readlink_args {
269 struct vop_generic_args a_head;
272 struct ucred *a_cred;
275 struct vop_inactive_args {
276 struct vop_generic_args a_head;
280 struct vop_reclaim_args {
281 struct vop_generic_args a_head;
285 struct vop_bmap_args {
286 struct vop_generic_args a_head;
292 buf_cmd_t a_cmd; /* BUF_CMD_READ, BUF_CMD_WRITE, etc */
295 struct vop_strategy_args {
296 struct vop_generic_args a_head;
301 struct vop_print_args {
302 struct vop_generic_args a_head;
306 struct vop_pathconf_args {
307 struct vop_generic_args a_head;
310 register_t *a_retval;
313 struct vop_advlock_args {
314 struct vop_generic_args a_head;
322 struct vop_balloc_args {
323 struct vop_generic_args a_head;
327 struct ucred *a_cred;
332 struct vop_reallocblks_args {
333 struct vop_generic_args a_head;
335 struct cluster_save *a_buflist;
338 struct vop_getpages_args {
339 struct vop_generic_args a_head;
341 struct vm_page **a_m;
344 vm_ooffset_t a_offset;
347 struct vop_putpages_args {
348 struct vop_generic_args a_head;
350 struct vm_page **a_m;
354 vm_ooffset_t a_offset;
357 struct vop_freeblks_args {
358 struct vop_generic_args a_head;
364 struct vop_getacl_args {
365 struct vop_generic_args a_head;
369 struct ucred *a_cred;
372 struct vop_setacl_args {
373 struct vop_generic_args a_head;
377 struct ucred *a_cred;
380 struct vop_aclcheck_args {
381 struct vop_generic_args a_head;
385 struct ucred *a_cred;
388 struct vop_getextattr_args {
389 struct vop_generic_args a_head;
393 struct ucred *a_cred;
396 struct vop_setextattr_args {
397 struct vop_generic_args a_head;
401 struct ucred *a_cred;
404 struct vop_mountctl_args {
405 struct vop_generic_args a_head;
415 struct vop_markatime_args {
416 struct vop_generic_args a_head;
419 struct ucred *a_cred;
427 * Warning: a_dvp is only held, not ref'd. The target must still vget()
430 struct vop_nresolve_args {
431 struct vop_generic_args a_head;
432 struct nchandle *a_nch;
434 struct ucred *a_cred;
437 struct vop_nlookupdotdot_args {
438 struct vop_generic_args a_head;
440 struct vnode **a_vpp;
441 struct ucred *a_cred;
446 * Warning: a_dvp is only held, not ref'd. The target must still vget()
449 struct vop_ncreate_args {
450 struct vop_generic_args a_head;
451 struct nchandle *a_nch; /* locked namespace */
452 struct vnode *a_dvp; /* held directory vnode */
453 struct vnode **a_vpp; /* returned refd & locked */
454 struct ucred *a_cred;
459 * Warning: a_dvp is only held, not ref'd. The target must still vget()
462 struct vop_nmkdir_args {
463 struct vop_generic_args a_head;
464 struct nchandle *a_nch; /* locked namespace */
466 struct vnode **a_vpp; /* returned refd & locked */
467 struct ucred *a_cred;
472 * Warning: a_dvp is only held, not ref'd. The target must still vget()
475 struct vop_nmknod_args {
476 struct vop_generic_args a_head;
477 struct nchandle *a_nch;
479 struct vnode **a_vpp;
480 struct ucred *a_cred;
485 * Warning: a_dvp is only held, not ref'd. The target must still vget()
488 struct vop_nlink_args {
489 struct vop_generic_args a_head;
490 struct nchandle *a_nch;
493 struct ucred *a_cred;
497 * Warning: a_dvp is only held, not ref'd. The target must still vget()
500 struct vop_nsymlink_args {
501 struct vop_generic_args a_head;
502 struct nchandle *a_nch;
504 struct vnode **a_vpp;
505 struct ucred *a_cred;
511 * Warning: a_dvp is only held, not ref'd. The target must still vget()
514 struct vop_nwhiteout_args {
515 struct vop_generic_args a_head;
516 struct nchandle *a_nch;
518 struct ucred *a_cred;
523 * Warning: a_dvp is only held, not ref'd. The target must still vget()
526 struct vop_nremove_args {
527 struct vop_generic_args a_head;
528 struct nchandle *a_nch; /* locked namespace */
530 struct ucred *a_cred;
534 * Warning: a_dvp is only held, not ref'd. The target must still vget()
537 struct vop_nrmdir_args {
538 struct vop_generic_args a_head;
539 struct nchandle *a_nch; /* locked namespace */
541 struct ucred *a_cred;
545 * Warning: a_fdvp and a_tdvp are only held, not ref'd. The target must
548 struct vop_nrename_args {
549 struct vop_generic_args a_head;
550 struct nchandle *a_fnch; /* locked namespace / from */
551 struct nchandle *a_tnch; /* locked namespace / to */
552 struct vnode *a_fdvp;
553 struct vnode *a_tdvp;
554 struct ucred *a_cred;
558 * This structure is the post-compiled VOP operations vector. vop_ops are
559 * typically per-mount entities. The first section is used by our vop_*()
560 * function wrappers to implement hooks for per-mount management functions
561 * such as journaling and cache coherency protocols. The second section is
562 * the function dispatch for the VFSs. The functions are supposed to run
563 * in the context of the VFS's thread (if it has one) and should not be
564 * directly called from random kernel code. Note that VOCALL()s are direct
565 * calls used for chaining vop_ops structures from a VFS context.
569 struct mount *vv_mount;
572 #define vop_ops_first_field vop_default
573 int (*vop_default)(struct vop_generic_args *);
574 int (*vop_unused11)(void *);
575 int (*vop_old_lookup)(struct vop_old_lookup_args *);
576 int (*vop_unused03)(void *);
577 int (*vop_old_create)(struct vop_old_create_args *);
578 int (*vop_old_whiteout)(struct vop_old_whiteout_args *);
579 int (*vop_old_mknod)(struct vop_old_mknod_args *);
580 int (*vop_open)(struct vop_open_args *);
581 int (*vop_close)(struct vop_close_args *);
582 int (*vop_access)(struct vop_access_args *);
583 int (*vop_getattr)(struct vop_getattr_args *);
584 int (*vop_setattr)(struct vop_setattr_args *);
585 int (*vop_read)(struct vop_read_args *);
586 int (*vop_write)(struct vop_write_args *);
587 int (*vop_unused04)(void *);
588 int (*vop_ioctl)(struct vop_ioctl_args *);
589 int (*vop_poll)(struct vop_poll_args *);
590 int (*vop_kqfilter)(struct vop_kqfilter_args *);
591 int (*vop_unused01)(void *); /* was vop_revoke */
592 int (*vop_mmap)(struct vop_mmap_args *);
593 int (*vop_fsync)(struct vop_fsync_args *);
594 int (*vop_old_remove)(struct vop_old_remove_args *);
595 int (*vop_old_link)(struct vop_old_link_args *);
596 int (*vop_old_rename)(struct vop_old_rename_args *);
597 int (*vop_old_mkdir)(struct vop_old_mkdir_args *);
598 int (*vop_old_rmdir)(struct vop_old_rmdir_args *);
599 int (*vop_old_symlink)(struct vop_old_symlink_args *);
600 int (*vop_readdir)(struct vop_readdir_args *);
601 int (*vop_readlink)(struct vop_readlink_args *);
602 int (*vop_inactive)(struct vop_inactive_args *);
603 int (*vop_reclaim)(struct vop_reclaim_args *);
604 int (*vop_unused09)(void *);
605 int (*vop_unused10)(void *);
606 int (*vop_bmap)(struct vop_bmap_args *);
607 int (*vop_strategy)(struct vop_strategy_args *);
608 int (*vop_print)(struct vop_print_args *);
609 int (*vop_pathconf)(struct vop_pathconf_args *);
610 int (*vop_advlock)(struct vop_advlock_args *);
611 int (*vop_balloc)(struct vop_balloc_args *);
612 int (*vop_reallocblks)(struct vop_reallocblks_args *);
613 int (*vop_getpages)(struct vop_getpages_args *);
614 int (*vop_putpages)(struct vop_putpages_args *);
615 int (*vop_freeblks)(struct vop_freeblks_args *);
616 int (*vop_unused05)(void *);
617 int (*vop_getacl)(struct vop_getacl_args *);
618 int (*vop_setacl)(struct vop_setacl_args *);
619 int (*vop_aclcheck)(struct vop_aclcheck_args *);
620 int (*vop_getextattr)(struct vop_getextattr_args *);
621 int (*vop_setextattr)(struct vop_setextattr_args *);
622 int (*vop_unused06)(void *);
623 int (*vop_unused07)(void *);
624 int (*vop_unused08)(void *);
625 int (*vop_mountctl)(struct vop_mountctl_args *);
626 int (*vop_markatime)(struct vop_markatime_args *);
628 int (*vop_nresolve)(struct vop_nresolve_args *);
629 int (*vop_nlookupdotdot)(struct vop_nlookupdotdot_args *);
630 int (*vop_ncreate)(struct vop_ncreate_args *);
631 int (*vop_nmkdir)(struct vop_nmkdir_args *);
632 int (*vop_nmknod)(struct vop_nmknod_args *);
633 int (*vop_nlink)(struct vop_nlink_args *);
634 int (*vop_nsymlink)(struct vop_nsymlink_args *);
635 int (*vop_nwhiteout)(struct vop_nwhiteout_args *);
636 int (*vop_nremove)(struct vop_nremove_args *);
637 int (*vop_nrmdir)(struct vop_nrmdir_args *);
638 int (*vop_nrename)(struct vop_nrename_args *);
639 #define vop_ops_last_field vop_nrename
643 * vop_mountctl() operations
645 #define VFSSET_DETACH 0
646 #define VFSSET_ATTACH 1
649 * Kernel VOP arguments union, suitable for malloc / embedding in other
650 * structures. The vop_args_union can hold any VOP call argument structure.
651 * Note that vu_head is broken out.
653 union vop_args_union {
654 struct vop_generic_args vu_head;
655 struct vop_generic_args vu_default;
656 struct vop_old_lookup_args vu_lookup;
657 struct vop_old_create_args vu_create;
658 struct vop_old_whiteout_args vu_whiteout;
659 struct vop_old_mknod_args vu_mknod;
660 struct vop_open_args vu_open;
661 struct vop_close_args vu_close;
662 struct vop_access_args vu_access;
663 struct vop_getattr_args vu_getattr;
664 struct vop_setattr_args vu_setattr;
665 struct vop_read_args vu_read;
666 struct vop_write_args vu_write;
667 struct vop_ioctl_args vu_ioctl;
668 struct vop_poll_args vu_poll;
669 struct vop_kqfilter_args vu_kqfilter;
670 struct vop_mmap_args vu_mmap;
671 struct vop_fsync_args vu_fsync;
672 struct vop_old_remove_args vu_remove;
673 struct vop_old_link_args vu_link;
674 struct vop_old_rename_args vu_rename;
675 struct vop_old_mkdir_args vu_mkdir;
676 struct vop_old_rmdir_args vu_rmdir;
677 struct vop_old_symlink_args vu_symlink;
678 struct vop_readdir_args vu_readdir;
679 struct vop_readlink_args vu_readlink;
680 struct vop_inactive_args vu_inactive;
681 struct vop_reclaim_args vu_reclaim;
682 struct vop_bmap_args vu_bmap;
683 struct vop_strategy_args vu_strategy;
684 struct vop_print_args vu_print;
685 struct vop_pathconf_args vu_pathconf;
686 struct vop_advlock_args vu_advlock;
687 struct vop_balloc_args vu_balloc;
688 struct vop_reallocblks_args vu_reallocblks;
689 struct vop_getpages_args vu_getpages;
690 struct vop_putpages_args vu_putpages;
691 struct vop_freeblks_args vu_freeblks;
692 struct vop_getacl_args vu_getacl;
693 struct vop_setacl_args vu_setacl;
694 struct vop_aclcheck_args vu_aclcheck;
695 struct vop_getextattr_args vu_getextattr;
696 struct vop_setextattr_args vu_setextattr;
697 struct vop_mountctl_args vu_mountctl;
698 struct vop_markatime_args vu_markatime;
700 struct vop_nresolve_args vu_nresolve;
701 struct vop_nlookupdotdot_args vu_nlookupdotdot;
702 struct vop_ncreate_args vu_ncreate;
703 struct vop_nmkdir_args vu_nmkdir;
704 struct vop_nmknod_args vu_nmknod;
705 struct vop_nlink_args vu_nlink;
706 struct vop_nsymlink_args vu_nsymlink;
707 struct vop_nwhiteout_args vu_nwhiteout;
708 struct vop_nremove_args vu_nremove;
709 struct vop_nrmdir_args vu_nrmdir;
710 struct vop_nrename_args vu_nrename;
716 * Kernel VOP call wrappers. These wrappers are responsible for wrapping
717 * the arguments in the appropriate VOP arguments structure, sending the
718 * message, and waiting for a reply. All kernel and VFS code should generally
719 * call these wrappers rather then attempt to call the operations vector
720 * routine directly in order to allow DragonFly to properly wrap the operation
721 * in a message and dispatch it to the correct thread.
723 int vop_old_lookup(struct vop_ops *ops, struct vnode *dvp,
724 struct vnode **vpp, struct componentname *cnp);
725 int vop_old_create(struct vop_ops *ops, struct vnode *dvp,
726 struct vnode **vpp, struct componentname *cnp,
728 int vop_old_whiteout(struct vop_ops *ops, struct vnode *dvp,
729 struct componentname *cnp, int flags);
730 int vop_old_mknod(struct vop_ops *ops, struct vnode *dvp,
731 struct vnode **vpp, struct componentname *cnp,
733 int vop_open(struct vop_ops *ops, struct vnode *vp, int mode,
734 struct ucred *cred, struct file *file);
735 int vop_close(struct vop_ops *ops, struct vnode *vp, int fflag);
736 int vop_access(struct vop_ops *ops, struct vnode *vp, int mode, int flags,
738 int vop_getattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap);
739 int vop_setattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap,
741 int vop_read(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
742 int ioflag, struct ucred *cred);
743 int vop_write(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
744 int ioflag, struct ucred *cred);
745 int vop_ioctl(struct vop_ops *ops, struct vnode *vp, u_long command,
746 caddr_t data, int fflag, struct ucred *cred);
747 int vop_poll(struct vop_ops *ops, struct vnode *vp, int events,
749 int vop_kqfilter(struct vop_ops *ops, struct vnode *vp, struct knote *kn);
750 int vop_mmap(struct vop_ops *ops, struct vnode *vp, int fflags,
752 int vop_fsync(struct vop_ops *ops, struct vnode *vp, int waitfor);
753 int vop_old_remove(struct vop_ops *ops, struct vnode *dvp,
754 struct vnode *vp, struct componentname *cnp);
755 int vop_old_link(struct vop_ops *ops, struct vnode *tdvp,
756 struct vnode *vp, struct componentname *cnp);
757 int vop_old_rename(struct vop_ops *ops, struct vnode *fdvp,
758 struct vnode *fvp, struct componentname *fcnp,
759 struct vnode *tdvp, struct vnode *tvp,
760 struct componentname *tcnp);
761 int vop_old_mkdir(struct vop_ops *ops, struct vnode *dvp,
762 struct vnode **vpp, struct componentname *cnp,
764 int vop_old_rmdir(struct vop_ops *ops, struct vnode *dvp,
765 struct vnode *vp, struct componentname *cnp);
766 int vop_old_symlink(struct vop_ops *ops, struct vnode *dvp,
767 struct vnode **vpp, struct componentname *cnp,
768 struct vattr *vap, char *target);
769 int vop_readdir(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
770 struct ucred *cred, int *eofflag,
771 int *ncookies, off_t **cookies);
772 int vop_readlink(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
774 int vop_inactive(struct vop_ops *ops, struct vnode *vp);
775 int vop_reclaim(struct vop_ops *ops, struct vnode *vp);
776 int vop_bmap(struct vop_ops *ops, struct vnode *vp, off_t loffset,
777 off_t *doffsetp, int *runp, int *runb, buf_cmd_t cmd);
778 int vop_strategy(struct vop_ops *ops, struct vnode *vp, struct bio *bio);
779 int vop_print(struct vop_ops *ops, struct vnode *vp);
780 int vop_pathconf(struct vop_ops *ops, struct vnode *vp, int name,
782 int vop_advlock(struct vop_ops *ops, struct vnode *vp, caddr_t id, int op,
783 struct flock *fl, int flags);
784 int vop_balloc(struct vop_ops *ops, struct vnode *vp, off_t startoffset,
785 int size, struct ucred *cred, int flags,
787 int vop_reallocblks(struct vop_ops *ops, struct vnode *vp,
788 struct cluster_save *buflist);
789 int vop_getpages(struct vop_ops *ops, struct vnode *vp, struct vm_page **m,
790 int count, int reqpage, vm_ooffset_t offset);
791 int vop_putpages(struct vop_ops *ops, struct vnode *vp, struct vm_page **m,
792 int count, int sync, int *rtvals, vm_ooffset_t offset);
793 int vop_freeblks(struct vop_ops *ops, struct vnode *vp,
794 off_t offset, int length);
795 int vop_getacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
796 struct acl *aclp, struct ucred *cred);
797 int vop_setacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
798 struct acl *aclp, struct ucred *cred);
799 int vop_aclcheck(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
800 struct acl *aclp, struct ucred *cred);
801 int vop_getextattr(struct vop_ops *ops, struct vnode *vp, char *name,
802 struct uio *uio, struct ucred *cred);
803 int vop_setextattr(struct vop_ops *ops, struct vnode *vp, char *name,
804 struct uio *uio, struct ucred *cred);
805 int vop_mountctl(struct vop_ops *ops, int op, struct file *fp,
806 const void *ctl, int ctllen, void *buf, int buflen, int *res);
807 int vop_markatime(struct vop_ops *ops, struct vnode *vp, struct ucred *cred);
808 int vop_nresolve(struct vop_ops *ops, struct nchandle *nch,
809 struct vnode *dvp, struct ucred *cred);
810 int vop_nlookupdotdot(struct vop_ops *ops, struct vnode *dvp,
811 struct vnode **vpp, struct ucred *cred, char **fakename);
812 int vop_ncreate(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
813 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
814 int vop_nmkdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
815 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
816 int vop_nmknod(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
817 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
818 int vop_nlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
819 struct vnode *vp, struct ucred *cred);
820 int vop_nsymlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
821 struct vnode **vpp, struct ucred *cred,
822 struct vattr *vap, char *target);
823 int vop_nwhiteout(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
824 struct ucred *cred, int flags);
825 int vop_nremove(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
827 int vop_nrmdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
829 int vop_nrename(struct vop_ops *ops,
830 struct nchandle *fnch, struct nchandle *tnch,
831 struct vnode *fdvp, struct vnode *tdvp,
835 * Kernel VOP forwarding wrappers. These are called when a VFS such as
836 * nullfs or unionfs needs to push down into another VFS, changing the
837 * a_ops pointer and consequentially necessitating additional
840 * Note that this is different from vop_ops chaining within the same
841 * filesystem. When a filesystem chains a vop_ops it just uses VOCALLs.
843 int vop_vnoperate_ap(struct vop_generic_args *ap);
844 int vop_cache_operate_ap(struct vop_generic_args *ap);
845 int vop_journal_operate_ap(struct vop_generic_args *ap);
846 int vop_old_lookup_ap(struct vop_old_lookup_args *ap);
847 int vop_old_create_ap(struct vop_old_create_args *ap);
848 int vop_old_whiteout_ap(struct vop_old_whiteout_args *ap);
849 int vop_old_mknod_ap(struct vop_old_mknod_args *ap);
850 int vop_open_ap(struct vop_open_args *ap);
851 int vop_close_ap(struct vop_close_args *ap);
852 int vop_access_ap(struct vop_access_args *ap);
853 int vop_getattr_ap(struct vop_getattr_args *ap);
854 int vop_setattr_ap(struct vop_setattr_args *ap);
855 int vop_read_ap(struct vop_read_args *ap);
856 int vop_write_ap(struct vop_write_args *ap);
857 int vop_ioctl_ap(struct vop_ioctl_args *ap);
858 int vop_poll_ap(struct vop_poll_args *ap);
859 int vop_kqfilter_ap(struct vop_kqfilter_args *ap);
860 int vop_mmap_ap(struct vop_mmap_args *ap);
861 int vop_fsync_ap(struct vop_fsync_args *ap);
862 int vop_old_remove_ap(struct vop_old_remove_args *ap);
863 int vop_old_link_ap(struct vop_old_link_args *ap);
864 int vop_old_rename_ap(struct vop_old_rename_args *ap);
865 int vop_old_mkdir_ap(struct vop_old_mkdir_args *ap);
866 int vop_old_rmdir_ap(struct vop_old_rmdir_args *ap);
867 int vop_old_symlink_ap(struct vop_old_symlink_args *ap);
868 int vop_readdir_ap(struct vop_readdir_args *ap);
869 int vop_readlink_ap(struct vop_readlink_args *ap);
870 int vop_inactive_ap(struct vop_inactive_args *ap);
871 int vop_reclaim_ap(struct vop_reclaim_args *ap);
872 int vop_bmap_ap(struct vop_bmap_args *ap);
873 int vop_strategy_ap(struct vop_strategy_args *ap);
874 int vop_print_ap(struct vop_print_args *ap);
875 int vop_pathconf_ap(struct vop_pathconf_args *ap);
876 int vop_advlock_ap(struct vop_advlock_args *ap);
877 int vop_balloc_ap(struct vop_balloc_args *ap);
878 int vop_reallocblks_ap(struct vop_reallocblks_args *ap);
879 int vop_getpages_ap(struct vop_getpages_args *ap);
880 int vop_putpages_ap(struct vop_putpages_args *ap);
881 int vop_freeblks_ap(struct vop_freeblks_args *ap);
882 int vop_getacl_ap(struct vop_getacl_args *ap);
883 int vop_setacl_ap(struct vop_setacl_args *ap);
884 int vop_aclcheck_ap(struct vop_aclcheck_args *ap);
885 int vop_getextattr_ap(struct vop_getextattr_args *ap);
886 int vop_setextattr_ap(struct vop_setextattr_args *ap);
887 int vop_mountctl_ap(struct vop_mountctl_args *ap);
888 int vop_markatime_ap(struct vop_markatime_args *ap);
890 int vop_nresolve_ap(struct vop_nresolve_args *ap);
891 int vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args *ap);
892 int vop_ncreate_ap(struct vop_ncreate_args *ap);
893 int vop_nmkdir_ap(struct vop_nmkdir_args *ap);
894 int vop_nmknod_ap(struct vop_nmknod_args *ap);
895 int vop_nlink_ap(struct vop_nlink_args *ap);
896 int vop_nsymlink_ap(struct vop_nsymlink_args *ap);
897 int vop_nwhiteout_ap(struct vop_nwhiteout_args *ap);
898 int vop_nremove_ap(struct vop_nremove_args *ap);
899 int vop_nrmdir_ap(struct vop_nrmdir_args *ap);
900 int vop_nrename_ap(struct vop_nrename_args *ap);
903 * VOP operations descriptor. This is used by the vop_ops compiler
904 * to convert VFS vector arrays (typically in vfs/blah/blah_vnops.c)
905 * into a vop_ops operations vector.
907 extern struct syslink_desc vop_default_desc;
908 extern struct syslink_desc vop_old_lookup_desc;
909 extern struct syslink_desc vop_old_create_desc;
910 extern struct syslink_desc vop_old_whiteout_desc;
911 extern struct syslink_desc vop_old_mknod_desc;
912 extern struct syslink_desc vop_open_desc;
913 extern struct syslink_desc vop_close_desc;
914 extern struct syslink_desc vop_access_desc;
915 extern struct syslink_desc vop_getattr_desc;
916 extern struct syslink_desc vop_setattr_desc;
917 extern struct syslink_desc vop_read_desc;
918 extern struct syslink_desc vop_write_desc;
919 extern struct syslink_desc vop_ioctl_desc;
920 extern struct syslink_desc vop_poll_desc;
921 extern struct syslink_desc vop_kqfilter_desc;
922 extern struct syslink_desc vop_mmap_desc;
923 extern struct syslink_desc vop_fsync_desc;
924 extern struct syslink_desc vop_old_remove_desc;
925 extern struct syslink_desc vop_old_link_desc;
926 extern struct syslink_desc vop_old_rename_desc;
927 extern struct syslink_desc vop_old_mkdir_desc;
928 extern struct syslink_desc vop_old_rmdir_desc;
929 extern struct syslink_desc vop_old_symlink_desc;
930 extern struct syslink_desc vop_readdir_desc;
931 extern struct syslink_desc vop_readlink_desc;
932 extern struct syslink_desc vop_inactive_desc;
933 extern struct syslink_desc vop_reclaim_desc;
934 extern struct syslink_desc vop_bmap_desc;
935 extern struct syslink_desc vop_strategy_desc;
936 extern struct syslink_desc vop_print_desc;
937 extern struct syslink_desc vop_pathconf_desc;
938 extern struct syslink_desc vop_advlock_desc;
939 extern struct syslink_desc vop_balloc_desc;
940 extern struct syslink_desc vop_reallocblks_desc;
941 extern struct syslink_desc vop_getpages_desc;
942 extern struct syslink_desc vop_putpages_desc;
943 extern struct syslink_desc vop_freeblks_desc;
944 extern struct syslink_desc vop_getacl_desc;
945 extern struct syslink_desc vop_setacl_desc;
946 extern struct syslink_desc vop_aclcheck_desc;
947 extern struct syslink_desc vop_getextattr_desc;
948 extern struct syslink_desc vop_setextattr_desc;
949 extern struct syslink_desc vop_mountctl_desc;
950 extern struct syslink_desc vop_markatime_desc;
952 extern struct syslink_desc vop_nresolve_desc;
953 extern struct syslink_desc vop_nlookupdotdot_desc;
954 extern struct syslink_desc vop_ncreate_desc;
955 extern struct syslink_desc vop_nmkdir_desc;
956 extern struct syslink_desc vop_nmknod_desc;
957 extern struct syslink_desc vop_nlink_desc;
958 extern struct syslink_desc vop_nsymlink_desc;
959 extern struct syslink_desc vop_nwhiteout_desc;
960 extern struct syslink_desc vop_nremove_desc;
961 extern struct syslink_desc vop_nrmdir_desc;
962 extern struct syslink_desc vop_nrename_desc;
967 * VOP_*() convenience macros extract the operations vector and make the
970 #define VOP_OPEN(vp, mode, cred, fp) \
971 vop_open(*(vp)->v_ops, vp, mode, cred, fp)
972 #define VOP_CLOSE(vp, fflag) \
973 vop_close(*(vp)->v_ops, vp, fflag)
974 #define VOP_ACCESS(vp, mode, cred) \
975 vop_access(*(vp)->v_ops, vp, mode, 0, cred)
976 #define VOP_ACCESS_FLAGS(vp, mode, flags, cred) \
977 vop_access(*(vp)->v_ops, vp, mode, flags, cred)
978 #define VOP_GETATTR(vp, vap) \
979 vop_getattr(*(vp)->v_ops, vp, vap)
980 #define VOP_SETATTR(vp, vap, cred) \
981 vop_setattr(*(vp)->v_ops, vp, vap, cred)
982 #define VOP_READ(vp, uio, ioflag, cred) \
983 vop_read(*(vp)->v_ops, vp, uio, ioflag, cred)
984 #define VOP_WRITE(vp, uio, ioflag, cred) \
985 vop_write(*(vp)->v_ops, vp, uio, ioflag, cred)
986 #define VOP_IOCTL(vp, command, data, fflag, cred) \
987 vop_ioctl(*(vp)->v_ops, vp, command, data, fflag, cred)
988 #define VOP_POLL(vp, events, cred) \
989 vop_poll(*(vp)->v_ops, vp, events, cred)
990 #define VOP_KQFILTER(vp, kn) \
991 vop_kqfilter(*(vp)->v_ops, vp, kn)
992 #define VOP_MMAP(vp, fflags, cred) \
993 vop_mmap(*(vp)->v_ops, vp, fflags, cred)
994 #define VOP_FSYNC(vp, waitfor) \
995 vop_fsync(*(vp)->v_ops, vp, waitfor)
996 #define VOP_READDIR(vp, uio, cred, eofflag, ncookies, cookies) \
997 vop_readdir(*(vp)->v_ops, vp, uio, cred, eofflag, ncookies, cookies)
998 #define VOP_READLINK(vp, uio, cred) \
999 vop_readlink(*(vp)->v_ops, vp, uio, cred)
1000 #define VOP_INACTIVE(vp) \
1001 vop_inactive(*(vp)->v_ops, vp)
1002 #define VOP_RECLAIM(vp) \
1003 vop_reclaim(*(vp)->v_ops, vp)
1004 #define VOP_BMAP(vp, loff, doffp, runp, runb, cmd) \
1005 vop_bmap(*(vp)->v_ops, vp, loff, doffp, runp, runb, cmd)
1006 #define VOP_PRINT(vp) \
1007 vop_print(*(vp)->v_ops, vp)
1008 #define VOP_PATHCONF(vp, name, retval) \
1009 vop_pathconf(*(vp)->v_ops, vp, name, retval)
1010 #define VOP_ADVLOCK(vp, id, op, fl, flags) \
1011 vop_advlock(*(vp)->v_ops, vp, id, op, fl, flags)
1012 #define VOP_BALLOC(vp, offset, size, cred, flags, bpp) \
1013 vop_balloc(*(vp)->v_ops, vp, offset, size, cred, flags, bpp)
1014 #define VOP_REALLOCBLKS(vp, buflist) \
1015 vop_reallocblks(*(vp)->v_ops, vp, buflist)
1016 #define VOP_GETPAGES(vp, m, count, reqpage, off) \
1017 vop_getpages(*(vp)->v_ops, vp, m, count, reqpage, off)
1018 #define VOP_PUTPAGES(vp, m, count, sync, rtvals, off) \
1019 vop_putpages(*(vp)->v_ops, vp, m, count, sync, rtvals, off)
1020 #define VOP_FREEBLKS(vp, offset, length) \
1021 vop_freeblks(*(vp)->v_ops, vp, offset, length)
1022 #define VOP_GETACL(vp, type, aclp, cred) \
1023 vop_getacl(*(vp)->v_ops, vp, type, aclp, cred)
1024 #define VOP_SETACL(vp, type, aclp, cred) \
1025 vop_setacl(*(vp)->v_ops, vp, type, aclp, cred)
1026 #define VOP_ACLCHECK(vp, type, aclp, cred) \
1027 vop_aclcheck(*(vp)->v_ops, vp, type, aclp, cred)
1028 #define VOP_GETEXTATTR(vp, name, uio, cred) \
1029 vop_getextattr(*(vp)->v_ops, vp, name, uio, cred)
1030 #define VOP_SETEXTATTR(vp, name, uio, cred) \
1031 vop_setextattr(*(vp)->v_ops, vp, name, uio, cred)
1032 #define VOP_MARKATIME(vp, cred) \
1033 vop_markatime(*(vp)->v_ops, vp, cred)
1034 /* no VOP_VFSSET() */
1035 /* VOP_STRATEGY - does not exist, use vn_strategy() */
1038 * 'OLD' VOP calls. These calls may only be made by the new API
1039 * compatibility functions in kern/vfs_default.c. Attempting to
1040 * call these functions directly will confuse the namecache. These
1041 * calls are deprecated and being removed from the system and from
1044 #define VOP_OLD_LOOKUP(dvp, vpp, cnp) \
1045 vop_old_lookup(*(dvp)->v_ops, dvp, vpp, cnp)
1046 #define VOP_OLD_CREATE(dvp, vpp, cnp, vap) \
1047 vop_old_create(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1048 #define VOP_OLD_MKDIR(dvp, vpp, cnp, vap) \
1049 vop_old_mkdir(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1050 #define VOP_OLD_MKNOD(dvp, vpp, cnp, vap) \
1051 vop_old_mknod(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1052 #define VOP_OLD_LINK(tdvp, vp, cnp) \
1053 vop_old_link(*(tdvp)->v_ops, tdvp, vp, cnp)
1054 #define VOP_OLD_SYMLINK(dvp, vpp, cnp, vap, target) \
1055 vop_old_symlink(*(dvp)->v_ops, dvp, vpp, cnp, vap, target)
1056 #define VOP_OLD_WHITEOUT(dvp, cnp, flags) \
1057 vop_old_whiteout(*(dvp)->v_ops, dvp, cnp, flags)
1058 #define VOP_OLD_RENAME(fdvp, fvp, fcnp, tdvp, tvp, tcnp) \
1059 vop_old_rename(*(fdvp)->v_ops, fdvp, fvp, fcnp, tdvp, tvp, tcnp)
1060 #define VOP_OLD_RMDIR(dvp, vp, cnp) \
1061 vop_old_rmdir(*(dvp)->v_ops, dvp, vp, cnp)
1062 #define VOP_OLD_REMOVE(dvp, vp, cnp) \
1063 vop_old_remove(*(dvp)->v_ops, dvp, vp, cnp)
1066 * 'NEW' VOP calls. These calls use namespaces as an operational basis
1067 * rather then vnodes and replace the OLD calls. Eventually all VFS's
1068 * will support these calls. Those that do not fall through to compatibility
1069 * code in kern/vfs_default which does the magic required to call the old
1072 #define VOP_NRESOLVE(nch, dvp, cred) \
1073 vop_nresolve((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1074 #define VOP_NLOOKUPDOTDOT(dvp, vpp, cred, fakename) \
1075 vop_nlookupdotdot(*(dvp)->v_ops, dvp, vpp, cred, fakename)
1076 #define VOP_NCREATE(nch, dvp, vpp, cred, vap) \
1077 vop_ncreate((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1078 #define VOP_NMKDIR(nch, dvp, vpp, cred, vap) \
1079 vop_nmkdir((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1080 #define VOP_NMKNOD(nch, dvp, vpp, cred, vap) \
1081 vop_nmknod((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1082 #define VOP_NLINK(nch, dvp, vp, cred) \
1083 vop_nlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vp, cred)
1084 #define VOP_NSYMLINK(nch, dvp, vpp, cred, vap, target) \
1085 vop_nsymlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap, target)
1086 #define VOP_NWHITEOUT(nch, dvp, cred, flags) \
1087 vop_nwhiteout((nch)->mount->mnt_vn_use_ops, nch, dvp, cred, flags)
1088 #define VOP_NRENAME(fnch, tnch, fdvp, tdvp, cred) \
1089 vop_nrename((fnch)->mount->mnt_vn_use_ops, fnch, tnch, fdvp, tdvp, cred)
1090 #define VOP_NRMDIR(nch, dvp, cred) \
1091 vop_nrmdir((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1092 #define VOP_NREMOVE(nch, dvp, cred) \
1093 vop_nremove((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)