2 * Copyright (c) 2004,2009 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
35 * Implement vnode ops wrappers. All vnode ops are wrapped through
38 * These wrappers are responsible for hanlding all MPSAFE issues related
39 * to a vnode operation.
42 #include <sys/param.h>
43 #include <sys/systm.h>
46 #include <sys/dirent.h>
47 #include <sys/domain.h>
48 #include <sys/eventhandler.h>
49 #include <sys/fcntl.h>
50 #include <sys/kernel.h>
51 #include <sys/kthread.h>
52 #include <sys/malloc.h>
54 #include <sys/mount.h>
56 #include <sys/namei.h>
57 #include <sys/reboot.h>
58 #include <sys/socket.h>
60 #include <sys/sysctl.h>
61 #include <sys/syslog.h>
62 #include <sys/vmmeter.h>
63 #include <sys/vnode.h>
64 #include <sys/vfsops.h>
65 #include <sys/sysmsg.h>
67 #include <machine/limits.h>
70 #include <vm/vm_object.h>
71 #include <vm/vm_extern.h>
72 #include <vm/vm_kern.h>
74 #include <vm/vm_map.h>
75 #include <vm/vm_page.h>
76 #include <vm/vm_pager.h>
77 #include <vm/vnode_pager.h>
78 #include <vm/vm_zone.h>
81 #include <sys/thread2.h>
82 #include <sys/mplock2.h>
84 #define VDESCNAME(name) __CONCAT(__CONCAT(vop_,name),_desc)
86 #define VNODEOP_DESC_INIT(name) \
87 struct syslink_desc VDESCNAME(name) = { \
88 __offsetof(struct vop_ops, __CONCAT(vop_, name)), \
91 VNODEOP_DESC_INIT(default);
92 VNODEOP_DESC_INIT(old_lookup);
93 VNODEOP_DESC_INIT(old_create);
94 VNODEOP_DESC_INIT(old_whiteout);
95 VNODEOP_DESC_INIT(old_mknod);
96 VNODEOP_DESC_INIT(open);
97 VNODEOP_DESC_INIT(close);
98 VNODEOP_DESC_INIT(access);
99 VNODEOP_DESC_INIT(getattr);
100 VNODEOP_DESC_INIT(setattr);
101 VNODEOP_DESC_INIT(read);
102 VNODEOP_DESC_INIT(write);
103 VNODEOP_DESC_INIT(ioctl);
104 VNODEOP_DESC_INIT(poll);
105 VNODEOP_DESC_INIT(kqfilter);
106 VNODEOP_DESC_INIT(mmap);
107 VNODEOP_DESC_INIT(fsync);
108 VNODEOP_DESC_INIT(old_remove);
109 VNODEOP_DESC_INIT(old_link);
110 VNODEOP_DESC_INIT(old_rename);
112 VNODEOP_DESC_INIT(old_mkdir);
113 VNODEOP_DESC_INIT(old_rmdir);
114 VNODEOP_DESC_INIT(old_symlink);
115 VNODEOP_DESC_INIT(readdir);
116 VNODEOP_DESC_INIT(readlink);
117 VNODEOP_DESC_INIT(inactive);
118 VNODEOP_DESC_INIT(reclaim);
119 VNODEOP_DESC_INIT(bmap);
120 VNODEOP_DESC_INIT(strategy);
121 VNODEOP_DESC_INIT(print);
122 VNODEOP_DESC_INIT(pathconf);
123 VNODEOP_DESC_INIT(advlock);
124 VNODEOP_DESC_INIT(balloc);
125 VNODEOP_DESC_INIT(reallocblks);
126 VNODEOP_DESC_INIT(getpages);
127 VNODEOP_DESC_INIT(putpages);
128 VNODEOP_DESC_INIT(freeblks);
129 VNODEOP_DESC_INIT(getacl);
130 VNODEOP_DESC_INIT(setacl);
131 VNODEOP_DESC_INIT(aclcheck);
132 VNODEOP_DESC_INIT(getextattr);
133 VNODEOP_DESC_INIT(setextattr);
134 VNODEOP_DESC_INIT(mountctl);
135 VNODEOP_DESC_INIT(markatime);
137 VNODEOP_DESC_INIT(nresolve);
138 VNODEOP_DESC_INIT(nlookupdotdot);
139 VNODEOP_DESC_INIT(ncreate);
140 VNODEOP_DESC_INIT(nmkdir);
141 VNODEOP_DESC_INIT(nmknod);
142 VNODEOP_DESC_INIT(nlink);
143 VNODEOP_DESC_INIT(nsymlink);
144 VNODEOP_DESC_INIT(nwhiteout);
145 VNODEOP_DESC_INIT(nremove);
146 VNODEOP_DESC_INIT(nrmdir);
147 VNODEOP_DESC_INIT(nrename);
149 #define DO_OPS(ops, error, ap, vop_field) \
150 error = ops->vop_field(ap);
152 /************************************************************************
153 * PRIMARY HIGH LEVEL VNODE OPERATIONS CALLS *
154 ************************************************************************
156 * These procedures are called directly from the kernel and/or fileops
157 * code to perform file/device operations on the system.
159 * NOTE: The old namespace api functions such as vop_rename() are no
160 * longer available for general use and have been renamed to
161 * vop_old_*(). Only the code in vfs_default.c is allowed to call
164 * NOTE: The VFS_MPLOCK*() macros handle mounts which do not set
165 * MNTK_MPSAFE or MNTK_xx_MPSAFE.
171 vop_old_lookup(struct vop_ops *ops, struct vnode *dvp,
172 struct vnode **vpp, struct componentname *cnp)
174 struct vop_old_lookup_args ap;
178 ap.a_head.a_desc = &vop_old_lookup_desc;
179 ap.a_head.a_ops = ops;
183 VFS_MPLOCK1(dvp->v_mount);
184 DO_OPS(ops, error, &ap, vop_old_lookup);
185 VFS_MPUNLOCK(dvp->v_mount);
193 vop_old_create(struct vop_ops *ops, struct vnode *dvp,
194 struct vnode **vpp, struct componentname *cnp, struct vattr *vap)
196 struct vop_old_create_args ap;
200 ap.a_head.a_desc = &vop_old_create_desc;
201 ap.a_head.a_ops = ops;
207 VFS_MPLOCK1(dvp->v_mount);
208 DO_OPS(ops, error, &ap, vop_old_create);
209 VFS_MPUNLOCK(dvp->v_mount);
217 vop_old_whiteout(struct vop_ops *ops, struct vnode *dvp,
218 struct componentname *cnp, int flags)
220 struct vop_old_whiteout_args ap;
224 ap.a_head.a_desc = &vop_old_whiteout_desc;
225 ap.a_head.a_ops = ops;
230 VFS_MPLOCK1(dvp->v_mount);
231 DO_OPS(ops, error, &ap, vop_old_whiteout);
232 VFS_MPUNLOCK(dvp->v_mount);
240 vop_old_mknod(struct vop_ops *ops, struct vnode *dvp,
241 struct vnode **vpp, struct componentname *cnp, struct vattr *vap)
243 struct vop_old_mknod_args ap;
247 ap.a_head.a_desc = &vop_old_mknod_desc;
248 ap.a_head.a_ops = ops;
254 VFS_MPLOCK1(dvp->v_mount);
255 DO_OPS(ops, error, &ap, vop_old_mknod);
256 VFS_MPUNLOCK(dvp->v_mount);
261 * NOTE: VAGE is always cleared when calling VOP_OPEN().
264 vop_open(struct vop_ops *ops, struct vnode *vp, int mode, struct ucred *cred,
267 struct vop_open_args ap;
272 * Decrement 3-2-1-0. Does not decrement beyond 0
274 if (vp->v_flag & VAGE0) {
275 vclrflags(vp, VAGE0);
276 } else if (vp->v_flag & VAGE1) {
277 vclrflags(vp, VAGE1);
278 vsetflags(vp, VAGE0);
281 ap.a_head.a_desc = &vop_open_desc;
282 ap.a_head.a_ops = ops;
288 VFS_MPLOCK1(vp->v_mount);
289 DO_OPS(ops, error, &ap, vop_open);
290 VFS_MPUNLOCK(vp->v_mount);
298 vop_close(struct vop_ops *ops, struct vnode *vp, int fflag)
300 struct vop_close_args ap;
304 ap.a_head.a_desc = &vop_close_desc;
305 ap.a_head.a_ops = ops;
309 VFS_MPLOCK1(vp->v_mount);
310 DO_OPS(ops, error, &ap, vop_close);
311 VFS_MPUNLOCK(vp->v_mount);
319 vop_access(struct vop_ops *ops, struct vnode *vp, int mode, int flags,
322 struct vop_access_args ap;
326 ap.a_head.a_desc = &vop_access_desc;
327 ap.a_head.a_ops = ops;
333 VFS_MPLOCK1(vp->v_mount);
334 DO_OPS(ops, error, &ap, vop_access);
335 VFS_MPUNLOCK(vp->v_mount);
343 vop_getattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap)
345 struct vop_getattr_args ap;
349 ap.a_head.a_desc = &vop_getattr_desc;
350 ap.a_head.a_ops = ops;
354 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_GA_MPSAFE);
355 DO_OPS(ops, error, &ap, vop_getattr);
356 VFS_MPUNLOCK(vp->v_mount);
365 vop_setattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap,
368 struct vop_setattr_args ap;
372 ap.a_head.a_desc = &vop_setattr_desc;
373 ap.a_head.a_ops = ops;
378 VFS_MPLOCK1(vp->v_mount);
379 DO_OPS(ops, error, &ap, vop_setattr);
380 VFS_MPUNLOCK(vp->v_mount);
388 vop_read(struct vop_ops *ops, struct vnode *vp, struct uio *uio, int ioflag,
391 struct vop_read_args ap;
395 ap.a_head.a_desc = &vop_read_desc;
396 ap.a_head.a_ops = ops;
399 ap.a_ioflag = ioflag;
402 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_RD_MPSAFE);
403 DO_OPS(ops, error, &ap, vop_read);
404 VFS_MPUNLOCK(vp->v_mount);
412 vop_write(struct vop_ops *ops, struct vnode *vp, struct uio *uio, int ioflag,
415 struct vop_write_args ap;
419 ap.a_head.a_desc = &vop_write_desc;
420 ap.a_head.a_ops = ops;
423 ap.a_ioflag = ioflag;
426 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_WR_MPSAFE);
427 DO_OPS(ops, error, &ap, vop_write);
428 VFS_MPUNLOCK(vp->v_mount);
436 vop_ioctl(struct vop_ops *ops, struct vnode *vp, u_long command, caddr_t data,
437 int fflag, struct ucred *cred, struct sysmsg *msg)
439 struct vop_ioctl_args ap;
443 ap.a_head.a_desc = &vop_ioctl_desc;
444 ap.a_head.a_ops = ops;
446 ap.a_command = command;
452 VFS_MPLOCK1(vp->v_mount);
453 DO_OPS(ops, error, &ap, vop_ioctl);
454 VFS_MPUNLOCK(vp->v_mount);
462 vop_poll(struct vop_ops *ops, struct vnode *vp, int events, struct ucred *cred)
464 struct vop_poll_args ap;
468 ap.a_head.a_desc = &vop_poll_desc;
469 ap.a_head.a_ops = ops;
471 ap.a_events = events;
474 VFS_MPLOCK1(vp->v_mount);
475 DO_OPS(ops, error, &ap, vop_poll);
476 VFS_MPUNLOCK(vp->v_mount);
484 vop_kqfilter(struct vop_ops *ops, struct vnode *vp, struct knote *kn)
486 struct vop_kqfilter_args ap;
490 ap.a_head.a_desc = &vop_kqfilter_desc;
491 ap.a_head.a_ops = ops;
495 VFS_MPLOCK1(vp->v_mount);
496 DO_OPS(ops, error, &ap, vop_kqfilter);
497 VFS_MPUNLOCK(vp->v_mount);
505 vop_mmap(struct vop_ops *ops, struct vnode *vp, int fflags, struct ucred *cred)
507 struct vop_mmap_args ap;
511 ap.a_head.a_desc = &vop_mmap_desc;
512 ap.a_head.a_ops = ops;
514 ap.a_fflags = fflags;
517 VFS_MPLOCK1(vp->v_mount);
518 DO_OPS(ops, error, &ap, vop_mmap);
519 VFS_MPUNLOCK(vp->v_mount);
527 vop_fsync(struct vop_ops *ops, struct vnode *vp, int waitfor, int flags)
529 struct vop_fsync_args ap;
533 ap.a_head.a_desc = &vop_fsync_desc;
534 ap.a_head.a_ops = ops;
536 ap.a_waitfor = waitfor;
539 VFS_MPLOCK1(vp->v_mount);
540 DO_OPS(ops, error, &ap, vop_fsync);
541 VFS_MPUNLOCK(vp->v_mount);
549 vop_old_remove(struct vop_ops *ops, struct vnode *dvp,
550 struct vnode *vp, struct componentname *cnp)
552 struct vop_old_remove_args ap;
556 ap.a_head.a_desc = &vop_old_remove_desc;
557 ap.a_head.a_ops = ops;
562 VFS_MPLOCK1(dvp->v_mount);
563 DO_OPS(ops, error, &ap, vop_old_remove);
564 VFS_MPUNLOCK(dvp->v_mount);
572 vop_old_link(struct vop_ops *ops, struct vnode *tdvp,
573 struct vnode *vp, struct componentname *cnp)
575 struct vop_old_link_args ap;
579 ap.a_head.a_desc = &vop_old_link_desc;
580 ap.a_head.a_ops = ops;
585 VFS_MPLOCK1(tdvp->v_mount);
586 DO_OPS(ops, error, &ap, vop_old_link);
587 VFS_MPUNLOCK(tdvp->v_mount);
595 vop_old_rename(struct vop_ops *ops,
596 struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
597 struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp)
599 struct vop_old_rename_args ap;
603 ap.a_head.a_desc = &vop_old_rename_desc;
604 ap.a_head.a_ops = ops;
612 VFS_MPLOCK1(tdvp->v_mount);
613 DO_OPS(ops, error, &ap, vop_old_rename);
614 VFS_MPUNLOCK(tdvp->v_mount);
622 vop_old_mkdir(struct vop_ops *ops, struct vnode *dvp,
623 struct vnode **vpp, struct componentname *cnp, struct vattr *vap)
625 struct vop_old_mkdir_args ap;
629 ap.a_head.a_desc = &vop_old_mkdir_desc;
630 ap.a_head.a_ops = ops;
636 VFS_MPLOCK1(dvp->v_mount);
637 DO_OPS(ops, error, &ap, vop_old_mkdir);
638 VFS_MPUNLOCK(dvp->v_mount);
646 vop_old_rmdir(struct vop_ops *ops, struct vnode *dvp,
647 struct vnode *vp, struct componentname *cnp)
649 struct vop_old_rmdir_args ap;
653 ap.a_head.a_desc = &vop_old_rmdir_desc;
654 ap.a_head.a_ops = ops;
659 VFS_MPLOCK1(dvp->v_mount);
660 DO_OPS(ops, error, &ap, vop_old_rmdir);
661 VFS_MPUNLOCK(dvp->v_mount);
669 vop_old_symlink(struct vop_ops *ops, struct vnode *dvp,
670 struct vnode **vpp, struct componentname *cnp,
671 struct vattr *vap, char *target)
673 struct vop_old_symlink_args ap;
677 ap.a_head.a_desc = &vop_old_symlink_desc;
678 ap.a_head.a_ops = ops;
683 ap.a_target = target;
685 VFS_MPLOCK1(dvp->v_mount);
686 DO_OPS(ops, error, &ap, vop_old_symlink);
687 VFS_MPUNLOCK(dvp->v_mount);
695 vop_readdir(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
696 struct ucred *cred, int *eofflag, int *ncookies, off_t **cookies)
698 struct vop_readdir_args ap;
702 ap.a_head.a_desc = &vop_readdir_desc;
703 ap.a_head.a_ops = ops;
707 ap.a_eofflag = eofflag;
708 ap.a_ncookies = ncookies;
709 ap.a_cookies = cookies;
711 VFS_MPLOCK1(vp->v_mount);
712 DO_OPS(ops, error, &ap, vop_readdir);
713 VFS_MPUNLOCK(vp->v_mount);
721 vop_readlink(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
724 struct vop_readlink_args ap;
728 ap.a_head.a_desc = &vop_readlink_desc;
729 ap.a_head.a_ops = ops;
734 VFS_MPLOCK1(vp->v_mount);
735 DO_OPS(ops, error, &ap, vop_readlink);
736 VFS_MPUNLOCK(vp->v_mount);
744 vop_inactive(struct vop_ops *ops, struct vnode *vp)
746 struct vop_inactive_args ap;
750 ap.a_head.a_desc = &vop_inactive_desc;
751 ap.a_head.a_ops = ops;
754 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_IN_MPSAFE);
755 DO_OPS(ops, error, &ap, vop_inactive);
756 VFS_MPUNLOCK(vp->v_mount);
764 vop_reclaim(struct vop_ops *ops, struct vnode *vp)
766 struct vop_reclaim_args ap;
770 ap.a_head.a_desc = &vop_reclaim_desc;
771 ap.a_head.a_ops = ops;
774 VFS_MPLOCK1(vp->v_mount);
775 DO_OPS(ops, error, &ap, vop_reclaim);
776 VFS_MPUNLOCK(vp->v_mount);
784 vop_bmap(struct vop_ops *ops, struct vnode *vp, off_t loffset,
785 off_t *doffsetp, int *runp, int *runb, buf_cmd_t cmd)
787 struct vop_bmap_args ap;
791 ap.a_head.a_desc = &vop_bmap_desc;
792 ap.a_head.a_ops = ops;
794 ap.a_loffset = loffset;
795 ap.a_doffsetp = doffsetp;
800 VFS_MPLOCK1(vp->v_mount);
801 DO_OPS(ops, error, &ap, vop_bmap);
802 VFS_MPUNLOCK(vp->v_mount);
810 vop_strategy(struct vop_ops *ops, struct vnode *vp, struct bio *bio)
812 struct vop_strategy_args ap;
816 ap.a_head.a_desc = &vop_strategy_desc;
817 ap.a_head.a_ops = ops;
822 VFS_MPLOCK1(vp->v_mount);
823 DO_OPS(ops, error, &ap, vop_strategy);
824 VFS_MPUNLOCK(vp->v_mount);
826 /* ugly hack for swap */
828 DO_OPS(ops, error, &ap, vop_strategy);
838 vop_print(struct vop_ops *ops, struct vnode *vp)
840 struct vop_print_args ap;
844 ap.a_head.a_desc = &vop_print_desc;
845 ap.a_head.a_ops = ops;
848 VFS_MPLOCK1(vp->v_mount);
849 DO_OPS(ops, error, &ap, vop_print);
850 VFS_MPUNLOCK(vp->v_mount);
858 vop_pathconf(struct vop_ops *ops, struct vnode *vp, int name,
861 struct vop_pathconf_args ap;
865 ap.a_head.a_desc = &vop_pathconf_desc;
866 ap.a_head.a_ops = ops;
869 ap.a_retval = retval;
871 VFS_MPLOCK1(vp->v_mount);
872 DO_OPS(ops, error, &ap, vop_pathconf);
873 VFS_MPUNLOCK(vp->v_mount);
881 vop_advlock(struct vop_ops *ops, struct vnode *vp, caddr_t id, int op,
882 struct flock *fl, int flags)
884 struct vop_advlock_args ap;
888 ap.a_head.a_desc = &vop_advlock_desc;
889 ap.a_head.a_ops = ops;
896 VFS_MPLOCK1(vp->v_mount);
897 DO_OPS(ops, error, &ap, vop_advlock);
898 VFS_MPUNLOCK(vp->v_mount);
906 vop_balloc(struct vop_ops *ops, struct vnode *vp, off_t startoffset,
907 int size, struct ucred *cred, int flags,
910 struct vop_balloc_args ap;
914 ap.a_head.a_desc = &vop_balloc_desc;
915 ap.a_head.a_ops = ops;
917 ap.a_startoffset = startoffset;
923 VFS_MPLOCK1(vp->v_mount);
924 DO_OPS(ops, error, &ap, vop_balloc);
925 VFS_MPUNLOCK(vp->v_mount);
933 vop_reallocblks(struct vop_ops *ops, struct vnode *vp,
934 struct cluster_save *buflist)
936 struct vop_reallocblks_args ap;
940 ap.a_head.a_desc = &vop_reallocblks_desc;
941 ap.a_head.a_ops = ops;
943 ap.a_buflist = buflist;
945 VFS_MPLOCK1(vp->v_mount);
946 DO_OPS(ops, error, &ap, vop_reallocblks);
947 VFS_MPUNLOCK(vp->v_mount);
955 vop_getpages(struct vop_ops *ops, struct vnode *vp, vm_page_t *m, int count,
956 int reqpage, vm_ooffset_t offset, int seqaccess)
958 struct vop_getpages_args ap;
962 ap.a_head.a_desc = &vop_getpages_desc;
963 ap.a_head.a_ops = ops;
967 ap.a_reqpage = reqpage;
968 ap.a_offset = offset;
969 ap.a_seqaccess = seqaccess;
971 VFS_MPLOCK1(vp->v_mount);
972 DO_OPS(ops, error, &ap, vop_getpages);
973 VFS_MPUNLOCK(vp->v_mount);
981 vop_putpages(struct vop_ops *ops, struct vnode *vp, vm_page_t *m, int count,
982 int sync, int *rtvals, vm_ooffset_t offset)
984 struct vop_putpages_args ap;
988 ap.a_head.a_desc = &vop_putpages_desc;
989 ap.a_head.a_ops = ops;
994 ap.a_rtvals = rtvals;
995 ap.a_offset = offset;
997 VFS_MPLOCK1(vp->v_mount);
998 DO_OPS(ops, error, &ap, vop_putpages);
999 VFS_MPUNLOCK(vp->v_mount);
1007 vop_freeblks(struct vop_ops *ops, struct vnode *vp, off_t offset, int length)
1009 struct vop_freeblks_args ap;
1013 ap.a_head.a_desc = &vop_freeblks_desc;
1014 ap.a_head.a_ops = ops;
1016 ap.a_offset = offset;
1017 ap.a_length = length;
1019 VFS_MPLOCK1(vp->v_mount);
1020 DO_OPS(ops, error, &ap, vop_freeblks);
1021 VFS_MPUNLOCK(vp->v_mount);
1029 vop_getacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
1030 struct acl *aclp, struct ucred *cred)
1032 struct vop_getacl_args ap;
1036 ap.a_head.a_desc = &vop_getacl_desc;
1037 ap.a_head.a_ops = ops;
1043 VFS_MPLOCK1(vp->v_mount);
1044 DO_OPS(ops, error, &ap, vop_getacl);
1045 VFS_MPUNLOCK(vp->v_mount);
1053 vop_setacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
1054 struct acl *aclp, struct ucred *cred)
1056 struct vop_setacl_args ap;
1060 ap.a_head.a_desc = &vop_setacl_desc;
1061 ap.a_head.a_ops = ops;
1067 VFS_MPLOCK1(vp->v_mount);
1068 DO_OPS(ops, error, &ap, vop_setacl);
1069 VFS_MPUNLOCK(vp->v_mount);
1077 vop_aclcheck(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
1078 struct acl *aclp, struct ucred *cred)
1080 struct vop_aclcheck_args ap;
1084 ap.a_head.a_desc = &vop_aclcheck_desc;
1085 ap.a_head.a_ops = ops;
1091 VFS_MPLOCK1(vp->v_mount);
1092 DO_OPS(ops, error, &ap, vop_aclcheck);
1093 VFS_MPUNLOCK(vp->v_mount);
1101 vop_getextattr(struct vop_ops *ops, struct vnode *vp, char *name,
1102 struct uio *uio, struct ucred *cred)
1104 struct vop_getextattr_args ap;
1108 ap.a_head.a_desc = &vop_getextattr_desc;
1109 ap.a_head.a_ops = ops;
1115 VFS_MPLOCK1(vp->v_mount);
1116 DO_OPS(ops, error, &ap, vop_getextattr);
1117 VFS_MPUNLOCK(vp->v_mount);
1125 vop_setextattr(struct vop_ops *ops, struct vnode *vp, char *name,
1126 struct uio *uio, struct ucred *cred)
1128 struct vop_setextattr_args ap;
1132 ap.a_head.a_desc = &vop_setextattr_desc;
1133 ap.a_head.a_ops = ops;
1139 VFS_MPLOCK1(vp->v_mount);
1140 DO_OPS(ops, error, &ap, vop_setextattr);
1141 VFS_MPUNLOCK(vp->v_mount);
1149 vop_mountctl(struct vop_ops *ops, struct vnode *vp, int op, struct file *fp,
1150 const void *ctl, int ctllen, void *buf, int buflen, int *res)
1152 struct vop_mountctl_args ap;
1156 ap.a_head.a_desc = &vop_mountctl_desc;
1157 ap.a_head.a_ops = ops;
1161 ap.a_ctllen = ctllen;
1163 ap.a_buflen = buflen;
1166 VFS_MPLOCK1(vp->v_mount);
1167 DO_OPS(ops, error, &ap, vop_mountctl);
1168 VFS_MPUNLOCK(vp->v_mount);
1176 vop_markatime(struct vop_ops *ops, struct vnode *vp, struct ucred *cred)
1178 struct vop_markatime_args ap;
1182 ap.a_head.a_desc = &vop_markatime_desc;
1183 ap.a_head.a_ops = ops;
1187 VFS_MPLOCK1(vp->v_mount);
1188 DO_OPS(ops, error, &ap, vop_markatime);
1189 VFS_MPUNLOCK(vp->v_mount);
1196 * nresolve takes a locked ncp, a referenced but unlocked dvp, and a cred,
1197 * and resolves the ncp into a positive or negative hit.
1199 * The namecache is automatically adjusted by this function. The ncp
1200 * is left locked on return.
1205 vop_nresolve(struct vop_ops *ops, struct nchandle *nch,
1206 struct vnode *dvp, struct ucred *cred)
1208 struct vop_nresolve_args ap;
1212 ap.a_head.a_desc = &vop_nresolve_desc;
1213 ap.a_head.a_ops = ops;
1218 VFS_MPLOCK1(dvp->v_mount);
1219 DO_OPS(ops, error, &ap, vop_nresolve);
1220 VFS_MPUNLOCK(dvp->v_mount);
1225 * nlookupdotdot takes an unlocked directory, referenced dvp, and looks
1226 * up "..", returning a locked parent directory in *vpp. If an error
1227 * occurs *vpp will be NULL.
1232 vop_nlookupdotdot(struct vop_ops *ops, struct vnode *dvp,
1233 struct vnode **vpp, struct ucred *cred, char **fakename)
1235 struct vop_nlookupdotdot_args ap;
1239 ap.a_head.a_desc = &vop_nlookupdotdot_desc;
1240 ap.a_head.a_ops = ops;
1244 ap.a_fakename = fakename;
1246 VFS_MPLOCK1(dvp->v_mount);
1247 DO_OPS(ops, error, &ap, vop_nlookupdotdot);
1248 VFS_MPUNLOCK(dvp->v_mount);
1253 * ncreate takes a locked, resolved ncp that typically represents a negative
1254 * cache hit and creates the file or node specified by the ncp, cred, and
1255 * vattr. If no error occurs a locked vnode is returned in *vpp.
1257 * The dvp passed in is referenced but unlocked.
1259 * The namecache is automatically adjusted by this function. The ncp
1260 * is left locked on return.
1265 vop_ncreate(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1266 struct vnode **vpp, struct ucred *cred, struct vattr *vap)
1268 struct vop_ncreate_args ap;
1272 ap.a_head.a_desc = &vop_ncreate_desc;
1273 ap.a_head.a_ops = ops;
1280 VFS_MPLOCK1(dvp->v_mount);
1281 DO_OPS(ops, error, &ap, vop_ncreate);
1282 VFS_MPUNLOCK(dvp->v_mount);
1287 * nmkdir takes a locked, resolved ncp that typically represents a negative
1288 * cache hit and creates the directory specified by the ncp, cred, and
1289 * vattr. If no error occurs a locked vnode is returned in *vpp.
1291 * The dvp passed in is referenced but unlocked.
1293 * The namecache is automatically adjusted by this function. The ncp
1294 * is left locked on return.
1299 vop_nmkdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1300 struct vnode **vpp, struct ucred *cred, struct vattr *vap)
1302 struct vop_nmkdir_args ap;
1306 ap.a_head.a_desc = &vop_nmkdir_desc;
1307 ap.a_head.a_ops = ops;
1314 VFS_MPLOCK1(dvp->v_mount);
1315 DO_OPS(ops, error, &ap, vop_nmkdir);
1316 VFS_MPUNLOCK(dvp->v_mount);
1321 * nmknod takes a locked, resolved ncp that typically represents a negative
1322 * cache hit and creates the node specified by the ncp, cred, and
1323 * vattr. If no error occurs a locked vnode is returned in *vpp.
1325 * The dvp passed in is referenced but unlocked.
1327 * The namecache is automatically adjusted by this function. The ncp
1328 * is left locked on return.
1333 vop_nmknod(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1334 struct vnode **vpp, struct ucred *cred, struct vattr *vap)
1336 struct vop_nmknod_args ap;
1340 ap.a_head.a_desc = &vop_nmknod_desc;
1341 ap.a_head.a_ops = ops;
1348 VFS_MPLOCK1(dvp->v_mount);
1349 DO_OPS(ops, error, &ap, vop_nmknod);
1350 VFS_MPUNLOCK(dvp->v_mount);
1355 * nlink takes a locked, resolved ncp that typically represents a negative
1356 * cache hit and creates the node specified by the ncp, cred, and
1357 * existing vnode. The passed vp must be locked and will remain locked
1358 * on return, as does the ncp, whether an error occurs or not.
1360 * The dvp passed in is referenced but unlocked.
1362 * The namecache is automatically adjusted by this function. The ncp
1363 * is left locked on return.
1368 vop_nlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1369 struct vnode *vp, struct ucred *cred)
1371 struct vop_nlink_args ap;
1375 ap.a_head.a_desc = &vop_nlink_desc;
1376 ap.a_head.a_ops = ops;
1382 VFS_MPLOCK1(dvp->v_mount);
1383 DO_OPS(ops, error, &ap, vop_nlink);
1384 VFS_MPUNLOCK(dvp->v_mount);
1389 * nsymlink takes a locked, resolved ncp that typically represents a negative
1390 * cache hit and creates a symbolic link based on cred, vap, and target (the
1391 * contents of the link). If no error occurs a locked vnode is returned in
1394 * The dvp passed in is referenced but unlocked.
1396 * The namecache is automatically adjusted by this function. The ncp
1397 * is left locked on return.
1402 vop_nsymlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1403 struct vnode **vpp, struct ucred *cred,
1404 struct vattr *vap, char *target)
1406 struct vop_nsymlink_args ap;
1410 ap.a_head.a_desc = &vop_nsymlink_desc;
1411 ap.a_head.a_ops = ops;
1417 ap.a_target = target;
1419 VFS_MPLOCK1(dvp->v_mount);
1420 DO_OPS(ops, error, &ap, vop_nsymlink);
1421 VFS_MPUNLOCK(dvp->v_mount);
1426 * nwhiteout takes a locked, resolved ncp that can represent a positive or
1427 * negative hit and executes the whiteout function specified in flags.
1429 * The dvp passed in is referenced but unlocked.
1431 * The namecache is automatically adjusted by this function. The ncp
1432 * is left locked on return.
1437 vop_nwhiteout(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1438 struct ucred *cred, int flags)
1440 struct vop_nwhiteout_args ap;
1444 ap.a_head.a_desc = &vop_nwhiteout_desc;
1445 ap.a_head.a_ops = ops;
1451 VFS_MPLOCK1(dvp->v_mount);
1452 DO_OPS(ops, error, &ap, vop_nwhiteout);
1453 VFS_MPUNLOCK(dvp->v_mount);
1458 * nremove takes a locked, resolved ncp that generally represents a
1459 * positive hit and removes the file.
1461 * The dvp passed in is referenced but unlocked.
1463 * The namecache is automatically adjusted by this function. The ncp
1464 * is left locked on return.
1469 vop_nremove(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1472 struct vop_nremove_args ap;
1476 ap.a_head.a_desc = &vop_nremove_desc;
1477 ap.a_head.a_ops = ops;
1482 VFS_MPLOCK1(dvp->v_mount);
1483 DO_OPS(ops, error, &ap, vop_nremove);
1484 VFS_MPUNLOCK(dvp->v_mount);
1489 * nrmdir takes a locked, resolved ncp that generally represents a
1490 * directory and removes the directory.
1492 * The dvp passed in is referenced but unlocked.
1494 * The namecache is automatically adjusted by this function. The ncp
1495 * is left locked on return.
1500 vop_nrmdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1503 struct vop_nrmdir_args ap;
1507 ap.a_head.a_desc = &vop_nrmdir_desc;
1508 ap.a_head.a_ops = ops;
1513 VFS_MPLOCK1(dvp->v_mount);
1514 DO_OPS(ops, error, &ap, vop_nrmdir);
1515 VFS_MPUNLOCK(dvp->v_mount);
1520 * nrename takes TWO locked, resolved ncp's and the cred of the caller
1521 * and renames the source ncp to the target ncp. The target ncp may
1522 * represent a positive or negative hit.
1524 * The fdvp and tdvp passed in are referenced but unlocked.
1526 * The namecache is automatically adjusted by this function. The ncp
1527 * is left locked on return. The source ncp is typically changed to
1528 * a negative cache hit and the target ncp typically takes on the
1529 * source ncp's underlying file.
1534 vop_nrename(struct vop_ops *ops,
1535 struct nchandle *fnch, struct nchandle *tnch,
1536 struct vnode *fdvp, struct vnode *tdvp,
1539 struct vop_nrename_args ap;
1543 ap.a_head.a_desc = &vop_nrename_desc;
1544 ap.a_head.a_ops = ops;
1551 VFS_MPLOCK1(fdvp->v_mount);
1552 DO_OPS(ops, error, &ap, vop_nrename);
1553 VFS_MPUNLOCK(fdvp->v_mount);
1557 /************************************************************************
1558 * PRIMARY VNODE OPERATIONS FORWARDING CALLS *
1559 ************************************************************************
1561 * These procedures are called from VFSs such as unionfs and nullfs
1562 * when they wish to forward an operation on one VFS to another. The
1563 * argument structure/message is modified and then directly passed to the
1564 * appropriate routine. This routines may also be called by initiators
1565 * who have an argument structure in hand rather then discreet arguments.
1567 * MPSAFE - Caller expected to already hold the appropriate vfs lock.
1570 vop_vnoperate_ap(struct vop_generic_args *ap)
1572 struct vop_ops *ops;
1576 error = VOCALL(ops, ap);
1582 * This routine is called by the cache coherency layer to execute the actual
1583 * VFS operation. If a journaling layer is present we call though it, else
1584 * we call the native VOP functions.
1587 vop_cache_operate_ap(struct vop_generic_args *ap)
1589 struct vop_ops *ops;
1593 if (ops->head.vv_mount->mnt_vn_journal_ops)
1594 error = VOCALL(ops->head.vv_mount->mnt_vn_journal_ops, ap);
1596 error = VOCALL(ops->head.vv_mount->mnt_vn_norm_ops, ap);
1602 * This routine is called by the journaling layer to execute the actual
1606 vop_journal_operate_ap(struct vop_generic_args *ap)
1608 struct vop_ops *ops;
1612 error = VOCALL(ops->head.vv_mount->mnt_vn_norm_ops, ap);
1618 vop_open_ap(struct vop_open_args *ap)
1622 DO_OPS(ap->a_head.a_ops, error, ap, vop_open);
1627 vop_close_ap(struct vop_close_args *ap)
1631 DO_OPS(ap->a_head.a_ops, error, ap, vop_close);
1636 vop_access_ap(struct vop_access_args *ap)
1640 DO_OPS(ap->a_head.a_ops, error, ap, vop_access);
1645 vop_getattr_ap(struct vop_getattr_args *ap)
1649 DO_OPS(ap->a_head.a_ops, error, ap, vop_getattr);
1654 vop_setattr_ap(struct vop_setattr_args *ap)
1658 DO_OPS(ap->a_head.a_ops, error, ap, vop_setattr);
1663 vop_read_ap(struct vop_read_args *ap)
1667 DO_OPS(ap->a_head.a_ops, error, ap, vop_read);
1672 vop_write_ap(struct vop_write_args *ap)
1676 DO_OPS(ap->a_head.a_ops, error, ap, vop_write);
1681 vop_ioctl_ap(struct vop_ioctl_args *ap)
1685 DO_OPS(ap->a_head.a_ops, error, ap, vop_ioctl);
1690 vop_poll_ap(struct vop_poll_args *ap)
1694 DO_OPS(ap->a_head.a_ops, error, ap, vop_poll);
1699 vop_kqfilter_ap(struct vop_kqfilter_args *ap)
1703 DO_OPS(ap->a_head.a_ops, error, ap, vop_kqfilter);
1708 vop_mmap_ap(struct vop_mmap_args *ap)
1712 DO_OPS(ap->a_head.a_ops, error, ap, vop_mmap);
1717 vop_fsync_ap(struct vop_fsync_args *ap)
1721 DO_OPS(ap->a_head.a_ops, error, ap, vop_fsync);
1726 vop_readdir_ap(struct vop_readdir_args *ap)
1730 DO_OPS(ap->a_head.a_ops, error, ap, vop_readdir);
1735 vop_readlink_ap(struct vop_readlink_args *ap)
1739 DO_OPS(ap->a_head.a_ops, error, ap, vop_readlink);
1744 vop_inactive_ap(struct vop_inactive_args *ap)
1748 DO_OPS(ap->a_head.a_ops, error, ap, vop_inactive);
1753 vop_reclaim_ap(struct vop_reclaim_args *ap)
1757 DO_OPS(ap->a_head.a_ops, error, ap, vop_reclaim);
1762 vop_bmap_ap(struct vop_bmap_args *ap)
1766 DO_OPS(ap->a_head.a_ops, error, ap, vop_bmap);
1771 vop_strategy_ap(struct vop_strategy_args *ap)
1775 DO_OPS(ap->a_head.a_ops, error, ap, vop_strategy);
1780 vop_print_ap(struct vop_print_args *ap)
1784 DO_OPS(ap->a_head.a_ops, error, ap, vop_print);
1789 vop_pathconf_ap(struct vop_pathconf_args *ap)
1793 DO_OPS(ap->a_head.a_ops, error, ap, vop_pathconf);
1798 vop_advlock_ap(struct vop_advlock_args *ap)
1802 DO_OPS(ap->a_head.a_ops, error, ap, vop_advlock);
1807 vop_balloc_ap(struct vop_balloc_args *ap)
1811 DO_OPS(ap->a_head.a_ops, error, ap, vop_balloc);
1816 vop_reallocblks_ap(struct vop_reallocblks_args *ap)
1820 DO_OPS(ap->a_head.a_ops, error, ap, vop_reallocblks);
1825 vop_getpages_ap(struct vop_getpages_args *ap)
1829 DO_OPS(ap->a_head.a_ops, error, ap, vop_getpages);
1834 vop_putpages_ap(struct vop_putpages_args *ap)
1838 DO_OPS(ap->a_head.a_ops, error, ap, vop_putpages);
1843 vop_freeblks_ap(struct vop_freeblks_args *ap)
1847 DO_OPS(ap->a_head.a_ops, error, ap, vop_freeblks);
1852 vop_getacl_ap(struct vop_getacl_args *ap)
1856 DO_OPS(ap->a_head.a_ops, error, ap, vop_getacl);
1861 vop_setacl_ap(struct vop_setacl_args *ap)
1865 DO_OPS(ap->a_head.a_ops, error, ap, vop_setacl);
1870 vop_aclcheck_ap(struct vop_aclcheck_args *ap)
1874 DO_OPS(ap->a_head.a_ops, error, ap, vop_aclcheck);
1879 vop_getextattr_ap(struct vop_getextattr_args *ap)
1883 DO_OPS(ap->a_head.a_ops, error, ap, vop_getextattr);
1888 vop_setextattr_ap(struct vop_setextattr_args *ap)
1892 DO_OPS(ap->a_head.a_ops, error, ap, vop_setextattr);
1897 vop_mountctl_ap(struct vop_mountctl_args *ap)
1901 DO_OPS(ap->a_head.a_ops, error, ap, vop_mountctl);
1906 vop_markatime_ap(struct vop_markatime_args *ap)
1910 DO_OPS(ap->a_head.a_ops, error, ap, vop_markatime);
1915 vop_nresolve_ap(struct vop_nresolve_args *ap)
1919 DO_OPS(ap->a_head.a_ops, error, ap, vop_nresolve);
1924 vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args *ap)
1928 DO_OPS(ap->a_head.a_ops, error, ap, vop_nlookupdotdot);
1933 vop_ncreate_ap(struct vop_ncreate_args *ap)
1937 DO_OPS(ap->a_head.a_ops, error, ap, vop_ncreate);
1942 vop_nmkdir_ap(struct vop_nmkdir_args *ap)
1946 DO_OPS(ap->a_head.a_ops, error, ap, vop_nmkdir);
1951 vop_nmknod_ap(struct vop_nmknod_args *ap)
1955 DO_OPS(ap->a_head.a_ops, error, ap, vop_nmknod);
1960 vop_nlink_ap(struct vop_nlink_args *ap)
1964 DO_OPS(ap->a_head.a_ops, error, ap, vop_nlink);
1969 vop_nsymlink_ap(struct vop_nsymlink_args *ap)
1973 DO_OPS(ap->a_head.a_ops, error, ap, vop_nsymlink);
1978 vop_nwhiteout_ap(struct vop_nwhiteout_args *ap)
1982 DO_OPS(ap->a_head.a_ops, error, ap, vop_nwhiteout);
1987 vop_nremove_ap(struct vop_nremove_args *ap)
1991 DO_OPS(ap->a_head.a_ops, error, ap, vop_nremove);
1996 vop_nrmdir_ap(struct vop_nrmdir_args *ap)
2000 DO_OPS(ap->a_head.a_ops, error, ap, vop_nrmdir);
2005 vop_nrename_ap(struct vop_nrename_args *ap)
2009 DO_OPS(ap->a_head.a_ops, error, ap, vop_nrename);