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 1.31 2008/02/06 00:27:26 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_
85 struct vop_generic_args {
86 struct syslink_desc *a_desc; /* command descriptor for the call */
87 struct vop_ops *a_ops; /* operations vector for the call */
91 struct vop_old_lookup_args {
92 struct vop_generic_args a_head;
95 struct componentname *a_cnp;
98 struct vop_old_create_args {
99 struct vop_generic_args a_head;
101 struct vnode **a_vpp;
102 struct componentname *a_cnp;
106 struct vop_old_whiteout_args {
107 struct vop_generic_args a_head;
109 struct componentname *a_cnp;
113 struct vop_old_mknod_args {
114 struct vop_generic_args a_head;
116 struct vnode **a_vpp;
117 struct componentname *a_cnp;
121 struct vop_open_args {
122 struct vop_generic_args a_head;
125 struct ucred *a_cred;
126 struct file *a_fp; /* optional fp for fileops override */
129 struct vop_close_args {
130 struct vop_generic_args a_head;
135 struct vop_access_args {
136 struct vop_generic_args a_head;
139 struct ucred *a_cred;
142 struct vop_getattr_args {
143 struct vop_generic_args a_head;
148 struct vop_setattr_args {
149 struct vop_generic_args a_head;
152 struct ucred *a_cred;
155 struct vop_read_args {
156 struct vop_generic_args a_head;
160 struct ucred *a_cred;
163 struct vop_write_args {
164 struct vop_generic_args a_head;
168 struct ucred *a_cred;
171 struct vop_ioctl_args {
172 struct vop_generic_args a_head;
177 struct ucred *a_cred;
180 struct vop_poll_args {
181 struct vop_generic_args a_head;
184 struct ucred *a_cred;
187 struct vop_kqfilter_args {
188 struct vop_generic_args a_head;
193 struct vop_revoke_args {
194 struct vop_generic_args a_head;
199 struct vop_mmap_args {
200 struct vop_generic_args a_head;
203 struct ucred *a_cred;
206 struct vop_fsync_args {
207 struct vop_generic_args a_head;
212 struct vop_old_remove_args {
213 struct vop_generic_args a_head;
216 struct componentname *a_cnp;
219 struct vop_old_link_args {
220 struct vop_generic_args a_head;
221 struct vnode *a_tdvp;
223 struct componentname *a_cnp;
226 struct vop_old_rename_args {
227 struct vop_generic_args a_head;
228 struct vnode *a_fdvp;
230 struct componentname *a_fcnp;
231 struct vnode *a_tdvp;
233 struct componentname *a_tcnp;
236 struct vop_old_mkdir_args {
237 struct vop_generic_args a_head;
239 struct vnode **a_vpp;
240 struct componentname *a_cnp;
244 struct vop_old_rmdir_args {
245 struct vop_generic_args a_head;
248 struct componentname *a_cnp;
251 struct vop_old_symlink_args {
252 struct vop_generic_args a_head;
254 struct vnode **a_vpp;
255 struct componentname *a_cnp;
260 struct vop_readdir_args {
261 struct vop_generic_args a_head;
264 struct ucred *a_cred;
270 struct vop_readlink_args {
271 struct vop_generic_args a_head;
274 struct ucred *a_cred;
277 struct vop_inactive_args {
278 struct vop_generic_args a_head;
282 struct vop_reclaim_args {
283 struct vop_generic_args a_head;
287 struct vop_bmap_args {
288 struct vop_generic_args a_head;
296 struct vop_strategy_args {
297 struct vop_generic_args a_head;
302 struct vop_print_args {
303 struct vop_generic_args a_head;
307 struct vop_pathconf_args {
308 struct vop_generic_args a_head;
311 register_t *a_retval;
314 struct vop_advlock_args {
315 struct vop_generic_args a_head;
323 struct vop_balloc_args {
324 struct vop_generic_args a_head;
328 struct ucred *a_cred;
333 struct vop_reallocblks_args {
334 struct vop_generic_args a_head;
336 struct cluster_save *a_buflist;
339 struct vop_getpages_args {
340 struct vop_generic_args a_head;
342 struct vm_page **a_m;
345 vm_ooffset_t a_offset;
348 struct vop_putpages_args {
349 struct vop_generic_args a_head;
351 struct vm_page **a_m;
355 vm_ooffset_t a_offset;
358 struct vop_freeblks_args {
359 struct vop_generic_args a_head;
365 struct vop_getacl_args {
366 struct vop_generic_args a_head;
370 struct ucred *a_cred;
373 struct vop_setacl_args {
374 struct vop_generic_args a_head;
378 struct ucred *a_cred;
381 struct vop_aclcheck_args {
382 struct vop_generic_args a_head;
386 struct ucred *a_cred;
389 struct vop_getextattr_args {
390 struct vop_generic_args a_head;
394 struct ucred *a_cred;
397 struct vop_setextattr_args {
398 struct vop_generic_args a_head;
402 struct ucred *a_cred;
405 struct vop_mountctl_args {
406 struct vop_generic_args a_head;
421 * Warning: a_dvp is only held, not ref'd. The target must still vget()
424 struct vop_nresolve_args {
425 struct vop_generic_args a_head;
426 struct nchandle *a_nch;
428 struct ucred *a_cred;
431 struct vop_nlookupdotdot_args {
432 struct vop_generic_args a_head;
434 struct vnode **a_vpp;
435 struct ucred *a_cred;
440 * Warning: a_dvp is only held, not ref'd. The target must still vget()
443 struct vop_ncreate_args {
444 struct vop_generic_args a_head;
445 struct nchandle *a_nch; /* locked namespace */
446 struct vnode *a_dvp; /* held directory vnode */
447 struct vnode **a_vpp; /* returned refd & locked */
448 struct ucred *a_cred;
453 * Warning: a_dvp is only held, not ref'd. The target must still vget()
456 struct vop_nmkdir_args {
457 struct vop_generic_args a_head;
458 struct nchandle *a_nch; /* locked namespace */
460 struct vnode **a_vpp; /* returned refd & locked */
461 struct ucred *a_cred;
466 * Warning: a_dvp is only held, not ref'd. The target must still vget()
469 struct vop_nmknod_args {
470 struct vop_generic_args a_head;
471 struct nchandle *a_nch;
473 struct vnode **a_vpp;
474 struct ucred *a_cred;
479 * Warning: a_dvp is only held, not ref'd. The target must still vget()
482 struct vop_nlink_args {
483 struct vop_generic_args a_head;
484 struct nchandle *a_nch;
487 struct ucred *a_cred;
491 * Warning: a_dvp is only held, not ref'd. The target must still vget()
494 struct vop_nsymlink_args {
495 struct vop_generic_args a_head;
496 struct nchandle *a_nch;
498 struct vnode **a_vpp;
499 struct ucred *a_cred;
505 * Warning: a_dvp is only held, not ref'd. The target must still vget()
508 struct vop_nwhiteout_args {
509 struct vop_generic_args a_head;
510 struct nchandle *a_nch;
512 struct ucred *a_cred;
517 * Warning: a_dvp is only held, not ref'd. The target must still vget()
520 struct vop_nremove_args {
521 struct vop_generic_args a_head;
522 struct nchandle *a_nch; /* locked namespace */
524 struct ucred *a_cred;
528 * Warning: a_dvp is only held, not ref'd. The target must still vget()
531 struct vop_nrmdir_args {
532 struct vop_generic_args a_head;
533 struct nchandle *a_nch; /* locked namespace */
535 struct ucred *a_cred;
539 * Warning: a_fdvp and a_tdvp are only held, not ref'd. The target must
542 struct vop_nrename_args {
543 struct vop_generic_args a_head;
544 struct nchandle *a_fnch; /* locked namespace / from */
545 struct nchandle *a_tnch; /* locked namespace / to */
546 struct vnode *a_fdvp;
547 struct vnode *a_tdvp;
548 struct ucred *a_cred;
552 * This structure is the post-compiled VOP operations vector. vop_ops are
553 * typically per-mount entities. The first section is used by our vop_*()
554 * function wrappers to implement hooks for per-mount management functions
555 * such as journaling and cache coherency protocols. The second section is
556 * the function dispatch for the VFSs. The functions are supposed to run
557 * in the context of the VFS's thread (if it has one) and should not be
558 * directly called from random kernel code. Note that VOCALL()s are direct
559 * calls used for chaining vop_ops structures from a VFS context.
563 struct mount *vv_mount;
566 #define vop_ops_first_field vop_default
567 int (*vop_default)(struct vop_generic_args *);
568 int (*vop_unused11)(void *);
569 int (*vop_old_lookup)(struct vop_old_lookup_args *);
570 int (*vop_unused03)(void *);
571 int (*vop_old_create)(struct vop_old_create_args *);
572 int (*vop_old_whiteout)(struct vop_old_whiteout_args *);
573 int (*vop_old_mknod)(struct vop_old_mknod_args *);
574 int (*vop_open)(struct vop_open_args *);
575 int (*vop_close)(struct vop_close_args *);
576 int (*vop_access)(struct vop_access_args *);
577 int (*vop_getattr)(struct vop_getattr_args *);
578 int (*vop_setattr)(struct vop_setattr_args *);
579 int (*vop_read)(struct vop_read_args *);
580 int (*vop_write)(struct vop_write_args *);
581 int (*vop_unused04)(void *);
582 int (*vop_ioctl)(struct vop_ioctl_args *);
583 int (*vop_poll)(struct vop_poll_args *);
584 int (*vop_kqfilter)(struct vop_kqfilter_args *);
585 int (*vop_revoke)(struct vop_revoke_args *);
586 int (*vop_mmap)(struct vop_mmap_args *);
587 int (*vop_fsync)(struct vop_fsync_args *);
588 int (*vop_old_remove)(struct vop_old_remove_args *);
589 int (*vop_old_link)(struct vop_old_link_args *);
590 int (*vop_old_rename)(struct vop_old_rename_args *);
591 int (*vop_old_mkdir)(struct vop_old_mkdir_args *);
592 int (*vop_old_rmdir)(struct vop_old_rmdir_args *);
593 int (*vop_old_symlink)(struct vop_old_symlink_args *);
594 int (*vop_readdir)(struct vop_readdir_args *);
595 int (*vop_readlink)(struct vop_readlink_args *);
596 int (*vop_inactive)(struct vop_inactive_args *);
597 int (*vop_reclaim)(struct vop_reclaim_args *);
598 int (*vop_unused09)(void *);
599 int (*vop_unused10)(void *);
600 int (*vop_bmap)(struct vop_bmap_args *);
601 int (*vop_strategy)(struct vop_strategy_args *);
602 int (*vop_print)(struct vop_print_args *);
603 int (*vop_pathconf)(struct vop_pathconf_args *);
604 int (*vop_advlock)(struct vop_advlock_args *);
605 int (*vop_balloc)(struct vop_balloc_args *);
606 int (*vop_reallocblks)(struct vop_reallocblks_args *);
607 int (*vop_getpages)(struct vop_getpages_args *);
608 int (*vop_putpages)(struct vop_putpages_args *);
609 int (*vop_freeblks)(struct vop_freeblks_args *);
610 int (*vop_unused05)(void *);
611 int (*vop_getacl)(struct vop_getacl_args *);
612 int (*vop_setacl)(struct vop_setacl_args *);
613 int (*vop_aclcheck)(struct vop_aclcheck_args *);
614 int (*vop_getextattr)(struct vop_getextattr_args *);
615 int (*vop_setextattr)(struct vop_setextattr_args *);
616 int (*vop_unused06)(void *);
617 int (*vop_unused07)(void *);
618 int (*vop_unused08)(void *);
619 int (*vop_mountctl)(struct vop_mountctl_args *);
621 int (*vop_nresolve)(struct vop_nresolve_args *);
622 int (*vop_nlookupdotdot)(struct vop_nlookupdotdot_args *);
623 int (*vop_ncreate)(struct vop_ncreate_args *);
624 int (*vop_nmkdir)(struct vop_nmkdir_args *);
625 int (*vop_nmknod)(struct vop_nmknod_args *);
626 int (*vop_nlink)(struct vop_nlink_args *);
627 int (*vop_nsymlink)(struct vop_nsymlink_args *);
628 int (*vop_nwhiteout)(struct vop_nwhiteout_args *);
629 int (*vop_nremove)(struct vop_nremove_args *);
630 int (*vop_nrmdir)(struct vop_nrmdir_args *);
631 int (*vop_nrename)(struct vop_nrename_args *);
632 #define vop_ops_last_field vop_nrename
636 * vop_mountctl() operations
638 #define VFSSET_DETACH 0
639 #define VFSSET_ATTACH 1
642 * Kernel VOP arguments union, suitable for malloc / embedding in other
643 * structures. The vop_args_union can hold any VOP call argument structure.
644 * Note that vu_head is broken out.
646 union vop_args_union {
647 struct vop_generic_args vu_head;
648 struct vop_generic_args vu_default;
649 struct vop_old_lookup_args vu_lookup;
650 struct vop_old_create_args vu_create;
651 struct vop_old_whiteout_args vu_whiteout;
652 struct vop_old_mknod_args vu_mknod;
653 struct vop_open_args vu_open;
654 struct vop_close_args vu_close;
655 struct vop_access_args vu_access;
656 struct vop_getattr_args vu_getattr;
657 struct vop_setattr_args vu_setattr;
658 struct vop_read_args vu_read;
659 struct vop_write_args vu_write;
660 struct vop_ioctl_args vu_ioctl;
661 struct vop_poll_args vu_poll;
662 struct vop_kqfilter_args vu_kqfilter;
663 struct vop_revoke_args vu_revoke;
664 struct vop_mmap_args vu_mmap;
665 struct vop_fsync_args vu_fsync;
666 struct vop_old_remove_args vu_remove;
667 struct vop_old_link_args vu_link;
668 struct vop_old_rename_args vu_rename;
669 struct vop_old_mkdir_args vu_mkdir;
670 struct vop_old_rmdir_args vu_rmdir;
671 struct vop_old_symlink_args vu_symlink;
672 struct vop_readdir_args vu_readdir;
673 struct vop_readlink_args vu_readlink;
674 struct vop_inactive_args vu_inactive;
675 struct vop_reclaim_args vu_reclaim;
676 struct vop_bmap_args vu_bmap;
677 struct vop_strategy_args vu_strategy;
678 struct vop_print_args vu_print;
679 struct vop_pathconf_args vu_pathconf;
680 struct vop_advlock_args vu_advlock;
681 struct vop_balloc_args vu_balloc;
682 struct vop_reallocblks_args vu_reallocblks;
683 struct vop_getpages_args vu_getpages;
684 struct vop_putpages_args vu_putpages;
685 struct vop_freeblks_args vu_freeblks;
686 struct vop_getacl_args vu_getacl;
687 struct vop_setacl_args vu_setacl;
688 struct vop_aclcheck_args vu_aclcheck;
689 struct vop_getextattr_args vu_getextattr;
690 struct vop_setextattr_args vu_setextattr;
691 struct vop_mountctl_args vu_mountctl;
693 struct vop_nresolve_args vu_nresolve;
694 struct vop_nlookupdotdot_args vu_nlookupdotdot;
695 struct vop_ncreate_args vu_ncreate;
696 struct vop_nmkdir_args vu_nmkdir;
697 struct vop_nmknod_args vu_nmknod;
698 struct vop_nlink_args vu_nlink;
699 struct vop_nsymlink_args vu_nsymlink;
700 struct vop_nwhiteout_args vu_nwhiteout;
701 struct vop_nremove_args vu_nremove;
702 struct vop_nrmdir_args vu_nrmdir;
703 struct vop_nrename_args vu_nrename;
709 * Kernel VOP call wrappers. These wrappers are responsible for wrapping
710 * the arguments in the appropriate VOP arguments structure, sending the
711 * message, and waiting for a reply. All kernel and VFS code should generally
712 * call these wrappers rather then attempt to call the operations vector
713 * routine directly in order to allow DragonFly to properly wrap the operation
714 * in a message and dispatch it to the correct thread.
716 int vop_old_lookup(struct vop_ops *ops, struct vnode *dvp,
717 struct vnode **vpp, struct componentname *cnp);
718 int vop_old_create(struct vop_ops *ops, struct vnode *dvp,
719 struct vnode **vpp, struct componentname *cnp,
721 int vop_old_whiteout(struct vop_ops *ops, struct vnode *dvp,
722 struct componentname *cnp, int flags);
723 int vop_old_mknod(struct vop_ops *ops, struct vnode *dvp,
724 struct vnode **vpp, struct componentname *cnp,
726 int vop_open(struct vop_ops *ops, struct vnode *vp, int mode,
727 struct ucred *cred, struct file *file);
728 int vop_close(struct vop_ops *ops, struct vnode *vp, int fflag);
729 int vop_access(struct vop_ops *ops, struct vnode *vp, int mode,
731 int vop_getattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap);
732 int vop_setattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap,
734 int vop_read(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
735 int ioflag, struct ucred *cred);
736 int vop_write(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
737 int ioflag, struct ucred *cred);
738 int vop_ioctl(struct vop_ops *ops, struct vnode *vp, u_long command,
739 caddr_t data, int fflag, struct ucred *cred);
740 int vop_poll(struct vop_ops *ops, struct vnode *vp, int events,
742 int vop_kqfilter(struct vop_ops *ops, struct vnode *vp, struct knote *kn);
743 int vop_revoke(struct vop_ops *ops, struct vnode *vp, int flags);
744 int vop_mmap(struct vop_ops *ops, struct vnode *vp, int fflags,
746 int vop_fsync(struct vop_ops *ops, struct vnode *vp, int waitfor);
747 int vop_old_remove(struct vop_ops *ops, struct vnode *dvp,
748 struct vnode *vp, struct componentname *cnp);
749 int vop_old_link(struct vop_ops *ops, struct vnode *tdvp,
750 struct vnode *vp, struct componentname *cnp);
751 int vop_old_rename(struct vop_ops *ops, struct vnode *fdvp,
752 struct vnode *fvp, struct componentname *fcnp,
753 struct vnode *tdvp, struct vnode *tvp,
754 struct componentname *tcnp);
755 int vop_old_mkdir(struct vop_ops *ops, struct vnode *dvp,
756 struct vnode **vpp, struct componentname *cnp,
758 int vop_old_rmdir(struct vop_ops *ops, struct vnode *dvp,
759 struct vnode *vp, struct componentname *cnp);
760 int vop_old_symlink(struct vop_ops *ops, struct vnode *dvp,
761 struct vnode **vpp, struct componentname *cnp,
762 struct vattr *vap, char *target);
763 int vop_readdir(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
764 struct ucred *cred, int *eofflag,
765 int *ncookies, off_t **cookies);
766 int vop_readlink(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
768 int vop_inactive(struct vop_ops *ops, struct vnode *vp);
769 int vop_reclaim(struct vop_ops *ops, struct vnode *vp);
770 int vop_bmap(struct vop_ops *ops, struct vnode *vp, off_t loffset,
771 off_t *doffsetp, int *runp, int *runb);
772 int vop_strategy(struct vop_ops *ops, struct vnode *vp, struct bio *bio);
773 int vop_print(struct vop_ops *ops, struct vnode *vp);
774 int vop_pathconf(struct vop_ops *ops, struct vnode *vp, int name,
776 int vop_advlock(struct vop_ops *ops, struct vnode *vp, caddr_t id, int op,
777 struct flock *fl, int flags);
778 int vop_balloc(struct vop_ops *ops, struct vnode *vp, off_t startoffset,
779 int size, struct ucred *cred, int flags,
781 int vop_reallocblks(struct vop_ops *ops, struct vnode *vp,
782 struct cluster_save *buflist);
783 int vop_getpages(struct vop_ops *ops, struct vnode *vp, struct vm_page **m,
784 int count, int reqpage, vm_ooffset_t offset);
785 int vop_putpages(struct vop_ops *ops, struct vnode *vp, struct vm_page **m,
786 int count, int sync, int *rtvals, vm_ooffset_t offset);
787 int vop_freeblks(struct vop_ops *ops, struct vnode *vp,
788 off_t offset, int length);
789 int vop_getacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
790 struct acl *aclp, struct ucred *cred);
791 int vop_setacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
792 struct acl *aclp, struct ucred *cred);
793 int vop_aclcheck(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
794 struct acl *aclp, struct ucred *cred);
795 int vop_getextattr(struct vop_ops *ops, struct vnode *vp, char *name,
796 struct uio *uio, struct ucred *cred);
797 int vop_setextattr(struct vop_ops *ops, struct vnode *vp, char *name,
798 struct uio *uio, struct ucred *cred);
799 int vop_mountctl(struct vop_ops *ops, int op, struct file *fp,
800 const void *ctl, int ctllen, void *buf, int buflen, int *res);
801 int vop_nresolve(struct vop_ops *ops, struct nchandle *nch,
802 struct vnode *dvp, struct ucred *cred);
803 int vop_nlookupdotdot(struct vop_ops *ops, struct vnode *dvp,
804 struct vnode **vpp, struct ucred *cred, char **fakename);
805 int vop_ncreate(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
806 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
807 int vop_nmkdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
808 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
809 int vop_nmknod(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
810 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
811 int vop_nlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
812 struct vnode *vp, struct ucred *cred);
813 int vop_nsymlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
814 struct vnode **vpp, struct ucred *cred,
815 struct vattr *vap, char *target);
816 int vop_nwhiteout(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
817 struct ucred *cred, int flags);
818 int vop_nremove(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
820 int vop_nrmdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
822 int vop_nrename(struct vop_ops *ops,
823 struct nchandle *fnch, struct nchandle *tnch,
824 struct vnode *fdvp, struct vnode *tdvp,
828 * Kernel VOP forwarding wrappers. These are called when a VFS such as
829 * nullfs or unionfs needs to push down into another VFS, changing the
830 * a_ops pointer and consequentially necessitating additional
833 * Note that this is different from vop_ops chaining within the same
834 * filesystem. When a filesystem chains a vop_ops it just uses VOCALLs.
836 int vop_vnoperate_ap(struct vop_generic_args *ap);
837 int vop_cache_operate_ap(struct vop_generic_args *ap);
838 int vop_journal_operate_ap(struct vop_generic_args *ap);
839 int vop_old_lookup_ap(struct vop_old_lookup_args *ap);
840 int vop_old_create_ap(struct vop_old_create_args *ap);
841 int vop_old_whiteout_ap(struct vop_old_whiteout_args *ap);
842 int vop_old_mknod_ap(struct vop_old_mknod_args *ap);
843 int vop_open_ap(struct vop_open_args *ap);
844 int vop_close_ap(struct vop_close_args *ap);
845 int vop_access_ap(struct vop_access_args *ap);
846 int vop_getattr_ap(struct vop_getattr_args *ap);
847 int vop_setattr_ap(struct vop_setattr_args *ap);
848 int vop_read_ap(struct vop_read_args *ap);
849 int vop_write_ap(struct vop_write_args *ap);
850 int vop_ioctl_ap(struct vop_ioctl_args *ap);
851 int vop_poll_ap(struct vop_poll_args *ap);
852 int vop_kqfilter_ap(struct vop_kqfilter_args *ap);
853 int vop_revoke_ap(struct vop_revoke_args *ap);
854 int vop_mmap_ap(struct vop_mmap_args *ap);
855 int vop_fsync_ap(struct vop_fsync_args *ap);
856 int vop_old_remove_ap(struct vop_old_remove_args *ap);
857 int vop_old_link_ap(struct vop_old_link_args *ap);
858 int vop_old_rename_ap(struct vop_old_rename_args *ap);
859 int vop_old_mkdir_ap(struct vop_old_mkdir_args *ap);
860 int vop_old_rmdir_ap(struct vop_old_rmdir_args *ap);
861 int vop_old_symlink_ap(struct vop_old_symlink_args *ap);
862 int vop_readdir_ap(struct vop_readdir_args *ap);
863 int vop_readlink_ap(struct vop_readlink_args *ap);
864 int vop_inactive_ap(struct vop_inactive_args *ap);
865 int vop_reclaim_ap(struct vop_reclaim_args *ap);
866 int vop_bmap_ap(struct vop_bmap_args *ap);
867 int vop_strategy_ap(struct vop_strategy_args *ap);
868 int vop_print_ap(struct vop_print_args *ap);
869 int vop_pathconf_ap(struct vop_pathconf_args *ap);
870 int vop_advlock_ap(struct vop_advlock_args *ap);
871 int vop_balloc_ap(struct vop_balloc_args *ap);
872 int vop_reallocblks_ap(struct vop_reallocblks_args *ap);
873 int vop_getpages_ap(struct vop_getpages_args *ap);
874 int vop_putpages_ap(struct vop_putpages_args *ap);
875 int vop_freeblks_ap(struct vop_freeblks_args *ap);
876 int vop_getacl_ap(struct vop_getacl_args *ap);
877 int vop_setacl_ap(struct vop_setacl_args *ap);
878 int vop_aclcheck_ap(struct vop_aclcheck_args *ap);
879 int vop_getextattr_ap(struct vop_getextattr_args *ap);
880 int vop_setextattr_ap(struct vop_setextattr_args *ap);
881 int vop_mountctl_ap(struct vop_mountctl_args *ap);
883 int vop_nresolve_ap(struct vop_nresolve_args *ap);
884 int vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args *ap);
885 int vop_ncreate_ap(struct vop_ncreate_args *ap);
886 int vop_nmkdir_ap(struct vop_nmkdir_args *ap);
887 int vop_nmknod_ap(struct vop_nmknod_args *ap);
888 int vop_nlink_ap(struct vop_nlink_args *ap);
889 int vop_nsymlink_ap(struct vop_nsymlink_args *ap);
890 int vop_nwhiteout_ap(struct vop_nwhiteout_args *ap);
891 int vop_nremove_ap(struct vop_nremove_args *ap);
892 int vop_nrmdir_ap(struct vop_nrmdir_args *ap);
893 int vop_nrename_ap(struct vop_nrename_args *ap);
896 * VOP operations descriptor. This is used by the vop_ops compiler
897 * to convert VFS vector arrays (typically in vfs/blah/blah_vnops.c)
898 * into a vop_ops operations vector.
900 extern struct syslink_desc vop_default_desc;
901 extern struct syslink_desc vop_old_lookup_desc;
902 extern struct syslink_desc vop_old_create_desc;
903 extern struct syslink_desc vop_old_whiteout_desc;
904 extern struct syslink_desc vop_old_mknod_desc;
905 extern struct syslink_desc vop_open_desc;
906 extern struct syslink_desc vop_close_desc;
907 extern struct syslink_desc vop_access_desc;
908 extern struct syslink_desc vop_getattr_desc;
909 extern struct syslink_desc vop_setattr_desc;
910 extern struct syslink_desc vop_read_desc;
911 extern struct syslink_desc vop_write_desc;
912 extern struct syslink_desc vop_ioctl_desc;
913 extern struct syslink_desc vop_poll_desc;
914 extern struct syslink_desc vop_kqfilter_desc;
915 extern struct syslink_desc vop_revoke_desc;
916 extern struct syslink_desc vop_mmap_desc;
917 extern struct syslink_desc vop_fsync_desc;
918 extern struct syslink_desc vop_old_remove_desc;
919 extern struct syslink_desc vop_old_link_desc;
920 extern struct syslink_desc vop_old_rename_desc;
921 extern struct syslink_desc vop_old_mkdir_desc;
922 extern struct syslink_desc vop_old_rmdir_desc;
923 extern struct syslink_desc vop_old_symlink_desc;
924 extern struct syslink_desc vop_readdir_desc;
925 extern struct syslink_desc vop_readlink_desc;
926 extern struct syslink_desc vop_inactive_desc;
927 extern struct syslink_desc vop_reclaim_desc;
928 extern struct syslink_desc vop_bmap_desc;
929 extern struct syslink_desc vop_strategy_desc;
930 extern struct syslink_desc vop_print_desc;
931 extern struct syslink_desc vop_pathconf_desc;
932 extern struct syslink_desc vop_advlock_desc;
933 extern struct syslink_desc vop_balloc_desc;
934 extern struct syslink_desc vop_reallocblks_desc;
935 extern struct syslink_desc vop_getpages_desc;
936 extern struct syslink_desc vop_putpages_desc;
937 extern struct syslink_desc vop_freeblks_desc;
938 extern struct syslink_desc vop_getacl_desc;
939 extern struct syslink_desc vop_setacl_desc;
940 extern struct syslink_desc vop_aclcheck_desc;
941 extern struct syslink_desc vop_getextattr_desc;
942 extern struct syslink_desc vop_setextattr_desc;
943 extern struct syslink_desc vop_mountctl_desc;
945 extern struct syslink_desc vop_nresolve_desc;
946 extern struct syslink_desc vop_nlookupdotdot_desc;
947 extern struct syslink_desc vop_ncreate_desc;
948 extern struct syslink_desc vop_nmkdir_desc;
949 extern struct syslink_desc vop_nmknod_desc;
950 extern struct syslink_desc vop_nlink_desc;
951 extern struct syslink_desc vop_nsymlink_desc;
952 extern struct syslink_desc vop_nwhiteout_desc;
953 extern struct syslink_desc vop_nremove_desc;
954 extern struct syslink_desc vop_nrmdir_desc;
955 extern struct syslink_desc vop_nrename_desc;
960 * VOP_*() convenience macros extract the operations vector and make the
963 #define VOP_OPEN(vp, mode, cred, fp) \
964 vop_open(*(vp)->v_ops, vp, mode, cred, fp)
965 #define VOP_CLOSE(vp, fflag) \
966 vop_close(*(vp)->v_ops, vp, fflag)
967 #define VOP_ACCESS(vp, mode, cred) \
968 vop_access(*(vp)->v_ops, vp, mode, cred)
969 #define VOP_GETATTR(vp, vap) \
970 vop_getattr(*(vp)->v_ops, vp, vap)
971 #define VOP_SETATTR(vp, vap, cred) \
972 vop_setattr(*(vp)->v_ops, vp, vap, cred)
973 #define VOP_READ(vp, uio, ioflag, cred) \
974 vop_read(*(vp)->v_ops, vp, uio, ioflag, cred)
975 #define VOP_WRITE(vp, uio, ioflag, cred) \
976 vop_write(*(vp)->v_ops, vp, uio, ioflag, cred)
977 #define VOP_IOCTL(vp, command, data, fflag, cred) \
978 vop_ioctl(*(vp)->v_ops, vp, command, data, fflag, cred)
979 #define VOP_POLL(vp, events, cred) \
980 vop_poll(*(vp)->v_ops, vp, events, cred)
981 #define VOP_KQFILTER(vp, kn) \
982 vop_kqfilter(*(vp)->v_ops, vp, kn)
983 #define VOP_REVOKE(vp, flags) \
984 vop_revoke(*(vp)->v_ops, vp, flags)
985 #define VOP_MMAP(vp, fflags, cred) \
986 vop_mmap(*(vp)->v_ops, vp, fflags, cred)
987 #define VOP_FSYNC(vp, waitfor) \
988 vop_fsync(*(vp)->v_ops, vp, waitfor)
989 #define VOP_READDIR(vp, uio, cred, eofflag, ncookies, cookies) \
990 vop_readdir(*(vp)->v_ops, vp, uio, cred, eofflag, ncookies, cookies)
991 #define VOP_READLINK(vp, uio, cred) \
992 vop_readlink(*(vp)->v_ops, vp, uio, cred)
993 #define VOP_INACTIVE(vp) \
994 vop_inactive(*(vp)->v_ops, vp)
995 #define VOP_RECLAIM(vp) \
996 vop_reclaim(*(vp)->v_ops, vp)
997 #define VOP_BMAP(vp, loff, doffp, runp, runb) \
998 vop_bmap(*(vp)->v_ops, vp, loff, doffp, runp, runb)
999 #define VOP_PRINT(vp) \
1000 vop_print(*(vp)->v_ops, vp)
1001 #define VOP_PATHCONF(vp, name, retval) \
1002 vop_pathconf(*(vp)->v_ops, vp, name, retval)
1003 #define VOP_ADVLOCK(vp, id, op, fl, flags) \
1004 vop_advlock(*(vp)->v_ops, vp, id, op, fl, flags)
1005 #define VOP_BALLOC(vp, offset, size, cred, flags, bpp) \
1006 vop_balloc(*(vp)->v_ops, vp, offset, size, cred, flags, bpp)
1007 #define VOP_REALLOCBLKS(vp, buflist) \
1008 vop_reallocblks(*(vp)->v_ops, vp, buflist)
1009 #define VOP_GETPAGES(vp, m, count, reqpage, off) \
1010 vop_getpages(*(vp)->v_ops, vp, m, count, reqpage, off)
1011 #define VOP_PUTPAGES(vp, m, count, sync, rtvals, off) \
1012 vop_putpages(*(vp)->v_ops, vp, m, count, sync, rtvals, off)
1013 #define VOP_FREEBLKS(vp, offset, length) \
1014 vop_freeblks(*(vp)->v_ops, vp, offset, length)
1015 #define VOP_GETACL(vp, type, aclp, cred) \
1016 vop_getacl(*(vp)->v_ops, vp, type, aclp, cred)
1017 #define VOP_SETACL(vp, type, aclp, cred) \
1018 vop_setacl(*(vp)->v_ops, vp, type, aclp, cred)
1019 #define VOP_ACLCHECK(vp, type, aclp, cred) \
1020 vop_aclcheck(*(vp)->v_ops, vp, type, aclp, cred)
1021 #define VOP_GETEXTATTR(vp, name, uio, cred) \
1022 vop_getextattr(*(vp)->v_ops, vp, name, uio, cred)
1023 #define VOP_SETEXTATTR(vp, name, uio, cred) \
1024 vop_setextattr(*(vp)->v_ops, vp, name, uio, cred)
1025 /* no VOP_VFSSET() */
1026 /* VOP_STRATEGY - does not exist, use vn_strategy() */
1029 * 'OLD' VOP calls. These calls may only be made by the new API
1030 * compatibility functions in kern/vfs_default.c. Attempting to
1031 * call these functions directly will confuse the namecache. These
1032 * calls are deprecated and being removed from the system and from
1035 #define VOP_OLD_LOOKUP(dvp, vpp, cnp) \
1036 vop_old_lookup(*(dvp)->v_ops, dvp, vpp, cnp)
1037 #define VOP_OLD_CREATE(dvp, vpp, cnp, vap) \
1038 vop_old_create(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1039 #define VOP_OLD_MKDIR(dvp, vpp, cnp, vap) \
1040 vop_old_mkdir(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1041 #define VOP_OLD_MKNOD(dvp, vpp, cnp, vap) \
1042 vop_old_mknod(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1043 #define VOP_OLD_LINK(tdvp, vp, cnp) \
1044 vop_old_link(*(tdvp)->v_ops, tdvp, vp, cnp)
1045 #define VOP_OLD_SYMLINK(dvp, vpp, cnp, vap, target) \
1046 vop_old_symlink(*(dvp)->v_ops, dvp, vpp, cnp, vap, target)
1047 #define VOP_OLD_WHITEOUT(dvp, cnp, flags) \
1048 vop_old_whiteout(*(dvp)->v_ops, dvp, cnp, flags)
1049 #define VOP_OLD_RENAME(fdvp, fvp, fcnp, tdvp, tvp, tcnp) \
1050 vop_old_rename(*(fdvp)->v_ops, fdvp, fvp, fcnp, tdvp, tvp, tcnp)
1051 #define VOP_OLD_RMDIR(dvp, vp, cnp) \
1052 vop_old_rmdir(*(dvp)->v_ops, dvp, vp, cnp)
1053 #define VOP_OLD_REMOVE(dvp, vp, cnp) \
1054 vop_old_remove(*(dvp)->v_ops, dvp, vp, cnp)
1057 * 'NEW' VOP calls. These calls use namespaces as an operational basis
1058 * rather then vnodes and replace the OLD calls. Eventually all VFS's
1059 * will support these calls. Those that do not fall through to compatibility
1060 * code in kern/vfs_default which does the magic required to call the old
1063 #define VOP_NRESOLVE(nch, dvp, cred) \
1064 vop_nresolve((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1065 #define VOP_NLOOKUPDOTDOT(dvp, vpp, cred, fakename) \
1066 vop_nlookupdotdot(*(dvp)->v_ops, dvp, vpp, cred, fakename)
1067 #define VOP_NCREATE(nch, dvp, vpp, cred, vap) \
1068 vop_ncreate((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1069 #define VOP_NMKDIR(nch, dvp, vpp, cred, vap) \
1070 vop_nmkdir((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1071 #define VOP_NMKNOD(nch, dvp, vpp, cred, vap) \
1072 vop_nmknod((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1073 #define VOP_NLINK(nch, dvp, vp, cred) \
1074 vop_nlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vp, cred)
1075 #define VOP_NSYMLINK(nch, dvp, vpp, cred, vap, target) \
1076 vop_nsymlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap, target)
1077 #define VOP_NWHITEOUT(nch, dvp, cred, flags) \
1078 vop_nwhiteout((nch)->mount->mnt_vn_use_ops, nch, dvp, cred, flags)
1079 #define VOP_NRENAME(fnch, tnch, fdvp, tdvp, cred) \
1080 vop_nrename((fnch)->mount->mnt_vn_use_ops, fnch, tnch, fdvp, tdvp, cred)
1081 #define VOP_NRMDIR(nch, dvp, cred) \
1082 vop_nrmdir((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1083 #define VOP_NREMOVE(nch, dvp, cred) \
1084 vop_nremove((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)