FreeBSD/Linux Kernel Cross Reference
sys/kern/vfs_vopops.c
1 /*
2 * Copyright (c) 2004,2009 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
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
16 * distribution.
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.
20 *
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
32 * SUCH DAMAGE.
33 */
34 /*
35 * Implement vnode ops wrappers. All vnode ops are wrapped through
36 * these functions.
37 *
38 * These wrappers are responsible for hanlding all MPSAFE issues related
39 * to a vnode operation.
40 */
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/buf.h>
45 #include <sys/conf.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>
53 #include <sys/mbuf.h>
54 #include <sys/mount.h>
55 #include <sys/proc.h>
56 #include <sys/namei.h>
57 #include <sys/reboot.h>
58 #include <sys/socket.h>
59 #include <sys/stat.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>
66 #include <sys/vfs_quota.h>
67
68 #include <machine/limits.h>
69
70 #include <vm/vm.h>
71 #include <vm/vm_object.h>
72 #include <vm/vm_extern.h>
73 #include <vm/vm_kern.h>
74 #include <vm/pmap.h>
75 #include <vm/vm_map.h>
76 #include <vm/vm_page.h>
77 #include <vm/vm_pager.h>
78 #include <vm/vnode_pager.h>
79 #include <vm/vm_zone.h>
80
81 #include <sys/buf2.h>
82 #include <sys/thread2.h>
83 #include <sys/mplock2.h>
84
85 #define VDESCNAME(name) __CONCAT(__CONCAT(vop_,name),_desc)
86
87 #define VNODEOP_DESC_INIT(name) \
88 struct syslink_desc VDESCNAME(name) = { \
89 __offsetof(struct vop_ops, __CONCAT(vop_, name)), \
90 #name }
91
92 VNODEOP_DESC_INIT(default);
93 VNODEOP_DESC_INIT(old_lookup);
94 VNODEOP_DESC_INIT(old_create);
95 VNODEOP_DESC_INIT(old_whiteout);
96 VNODEOP_DESC_INIT(old_mknod);
97 VNODEOP_DESC_INIT(open);
98 VNODEOP_DESC_INIT(close);
99 VNODEOP_DESC_INIT(access);
100 VNODEOP_DESC_INIT(getattr);
101 VNODEOP_DESC_INIT(setattr);
102 VNODEOP_DESC_INIT(read);
103 VNODEOP_DESC_INIT(write);
104 VNODEOP_DESC_INIT(ioctl);
105 VNODEOP_DESC_INIT(poll);
106 VNODEOP_DESC_INIT(kqfilter);
107 VNODEOP_DESC_INIT(mmap);
108 VNODEOP_DESC_INIT(fsync);
109 VNODEOP_DESC_INIT(old_remove);
110 VNODEOP_DESC_INIT(old_link);
111 VNODEOP_DESC_INIT(old_rename);
112
113 VNODEOP_DESC_INIT(old_mkdir);
114 VNODEOP_DESC_INIT(old_rmdir);
115 VNODEOP_DESC_INIT(old_symlink);
116 VNODEOP_DESC_INIT(readdir);
117 VNODEOP_DESC_INIT(readlink);
118 VNODEOP_DESC_INIT(inactive);
119 VNODEOP_DESC_INIT(reclaim);
120 VNODEOP_DESC_INIT(bmap);
121 VNODEOP_DESC_INIT(strategy);
122 VNODEOP_DESC_INIT(print);
123 VNODEOP_DESC_INIT(pathconf);
124 VNODEOP_DESC_INIT(advlock);
125 VNODEOP_DESC_INIT(balloc);
126 VNODEOP_DESC_INIT(reallocblks);
127 VNODEOP_DESC_INIT(getpages);
128 VNODEOP_DESC_INIT(putpages);
129 VNODEOP_DESC_INIT(freeblks);
130 VNODEOP_DESC_INIT(getacl);
131 VNODEOP_DESC_INIT(setacl);
132 VNODEOP_DESC_INIT(aclcheck);
133 VNODEOP_DESC_INIT(getextattr);
134 VNODEOP_DESC_INIT(setextattr);
135 VNODEOP_DESC_INIT(mountctl);
136 VNODEOP_DESC_INIT(markatime);
137
138 VNODEOP_DESC_INIT(nresolve);
139 VNODEOP_DESC_INIT(nlookupdotdot);
140 VNODEOP_DESC_INIT(ncreate);
141 VNODEOP_DESC_INIT(nmkdir);
142 VNODEOP_DESC_INIT(nmknod);
143 VNODEOP_DESC_INIT(nlink);
144 VNODEOP_DESC_INIT(nsymlink);
145 VNODEOP_DESC_INIT(nwhiteout);
146 VNODEOP_DESC_INIT(nremove);
147 VNODEOP_DESC_INIT(nrmdir);
148 VNODEOP_DESC_INIT(nrename);
149
150 #define DO_OPS(ops, error, ap, vop_field) \
151 error = ops->vop_field(ap);
152
153 /************************************************************************
154 * PRIMARY HIGH LEVEL VNODE OPERATIONS CALLS *
155 ************************************************************************
156 *
157 * These procedures are called directly from the kernel and/or fileops
158 * code to perform file/device operations on the system.
159 *
160 * NOTE: The old namespace api functions such as vop_rename() are no
161 * longer available for general use and have been renamed to
162 * vop_old_*(). Only the code in vfs_default.c is allowed to call
163 * those ops.
164 *
165 * NOTE: The VFS_MPLOCK*() macros handle mounts which do not set
166 * MNTK_MPSAFE or MNTK_xx_MPSAFE.
167 *
168 * MPSAFE
169 */
170
171 int
172 vop_old_lookup(struct vop_ops *ops, struct vnode *dvp,
173 struct vnode **vpp, struct componentname *cnp)
174 {
175 struct vop_old_lookup_args ap;
176 VFS_MPLOCK_DECLARE;
177 int error;
178
179 ap.a_head.a_desc = &vop_old_lookup_desc;
180 ap.a_head.a_ops = ops;
181 ap.a_dvp = dvp;
182 ap.a_vpp = vpp;
183 ap.a_cnp = cnp;
184 VFS_MPLOCK1(dvp->v_mount);
185 DO_OPS(ops, error, &ap, vop_old_lookup);
186 VFS_MPUNLOCK(dvp->v_mount);
187 return(error);
188 }
189
190 /*
191 * MPSAFE
192 */
193 int
194 vop_old_create(struct vop_ops *ops, struct vnode *dvp,
195 struct vnode **vpp, struct componentname *cnp, struct vattr *vap)
196 {
197 struct vop_old_create_args ap;
198 VFS_MPLOCK_DECLARE;
199 int error;
200
201 ap.a_head.a_desc = &vop_old_create_desc;
202 ap.a_head.a_ops = ops;
203 ap.a_dvp = dvp;
204 ap.a_vpp = vpp;
205 ap.a_cnp = cnp;
206 ap.a_vap = vap;
207
208 VFS_MPLOCK1(dvp->v_mount);
209 DO_OPS(ops, error, &ap, vop_old_create);
210 VFS_MPUNLOCK(dvp->v_mount);
211 return(error);
212 }
213
214 /*
215 * MPSAFE
216 */
217 int
218 vop_old_whiteout(struct vop_ops *ops, struct vnode *dvp,
219 struct componentname *cnp, int flags)
220 {
221 struct vop_old_whiteout_args ap;
222 VFS_MPLOCK_DECLARE;
223 int error;
224
225 ap.a_head.a_desc = &vop_old_whiteout_desc;
226 ap.a_head.a_ops = ops;
227 ap.a_dvp = dvp;
228 ap.a_cnp = cnp;
229 ap.a_flags = flags;
230
231 VFS_MPLOCK1(dvp->v_mount);
232 DO_OPS(ops, error, &ap, vop_old_whiteout);
233 VFS_MPUNLOCK(dvp->v_mount);
234 return(error);
235 }
236
237 /*
238 * MPSAFE
239 */
240 int
241 vop_old_mknod(struct vop_ops *ops, struct vnode *dvp,
242 struct vnode **vpp, struct componentname *cnp, struct vattr *vap)
243 {
244 struct vop_old_mknod_args ap;
245 VFS_MPLOCK_DECLARE;
246 int error;
247
248 ap.a_head.a_desc = &vop_old_mknod_desc;
249 ap.a_head.a_ops = ops;
250 ap.a_dvp = dvp;
251 ap.a_vpp = vpp;
252 ap.a_cnp = cnp;
253 ap.a_vap = vap;
254
255 VFS_MPLOCK1(dvp->v_mount);
256 DO_OPS(ops, error, &ap, vop_old_mknod);
257 VFS_MPUNLOCK(dvp->v_mount);
258 return(error);
259 }
260
261 /*
262 * NOTE: VAGE is always cleared when calling VOP_OPEN().
263 */
264 int
265 vop_open(struct vop_ops *ops, struct vnode *vp, int mode, struct ucred *cred,
266 struct file *fp)
267 {
268 struct vop_open_args ap;
269 VFS_MPLOCK_DECLARE;
270 int error;
271
272 /*
273 * Decrement 3-2-1-0. Does not decrement beyond 0
274 */
275 if (vp->v_flag & VAGE0) {
276 vclrflags(vp, VAGE0);
277 } else if (vp->v_flag & VAGE1) {
278 vclrflags(vp, VAGE1);
279 vsetflags(vp, VAGE0);
280 }
281
282 ap.a_head.a_desc = &vop_open_desc;
283 ap.a_head.a_ops = ops;
284 ap.a_vp = vp;
285 ap.a_fp = fp;
286 ap.a_mode = mode;
287 ap.a_cred = cred;
288
289 VFS_MPLOCK1(vp->v_mount);
290 DO_OPS(ops, error, &ap, vop_open);
291 VFS_MPUNLOCK(vp->v_mount);
292 return(error);
293 }
294
295 /*
296 * MPSAFE
297 */
298 int
299 vop_close(struct vop_ops *ops, struct vnode *vp, int fflag)
300 {
301 struct vop_close_args ap;
302 VFS_MPLOCK_DECLARE;
303 int error;
304
305 ap.a_head.a_desc = &vop_close_desc;
306 ap.a_head.a_ops = ops;
307 ap.a_vp = vp;
308 ap.a_fflag = fflag;
309
310 VFS_MPLOCK1(vp->v_mount);
311 DO_OPS(ops, error, &ap, vop_close);
312 VFS_MPUNLOCK(vp->v_mount);
313 return(error);
314 }
315
316 /*
317 * MPSAFE
318 */
319 int
320 vop_access(struct vop_ops *ops, struct vnode *vp, int mode, int flags,
321 struct ucred *cred)
322 {
323 struct vop_access_args ap;
324 VFS_MPLOCK_DECLARE;
325 int error;
326
327 ap.a_head.a_desc = &vop_access_desc;
328 ap.a_head.a_ops = ops;
329 ap.a_vp = vp;
330 ap.a_mode = mode;
331 ap.a_flags = flags;
332 ap.a_cred = cred;
333
334 VFS_MPLOCK1(vp->v_mount);
335 DO_OPS(ops, error, &ap, vop_access);
336 VFS_MPUNLOCK(vp->v_mount);
337 return(error);
338 }
339
340 /*
341 * MPSAFE
342 */
343 int
344 vop_getattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap)
345 {
346 struct vop_getattr_args ap;
347 VFS_MPLOCK_DECLARE;
348 int error;
349
350 ap.a_head.a_desc = &vop_getattr_desc;
351 ap.a_head.a_ops = ops;
352 ap.a_vp = vp;
353 ap.a_vap = vap;
354
355 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_GA_MPSAFE);
356 DO_OPS(ops, error, &ap, vop_getattr);
357 VFS_MPUNLOCK(vp->v_mount);
358
359 return(error);
360 }
361
362 /*
363 * MPSAFE
364 */
365 int
366 vop_setattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap,
367 struct ucred *cred)
368 {
369 struct vop_setattr_args ap;
370 VFS_MPLOCK_DECLARE;
371 int error;
372
373 ap.a_head.a_desc = &vop_setattr_desc;
374 ap.a_head.a_ops = ops;
375 ap.a_vp = vp;
376 ap.a_vap = vap;
377 ap.a_cred = cred;
378
379 VFS_MPLOCK1(vp->v_mount);
380 DO_OPS(ops, error, &ap, vop_setattr);
381 VFS_MPUNLOCK(vp->v_mount);
382 return(error);
383 }
384
385 /*
386 * MPSAFE
387 */
388 int
389 vop_read(struct vop_ops *ops, struct vnode *vp, struct uio *uio, int ioflag,
390 struct ucred *cred)
391 {
392 struct vop_read_args ap;
393 VFS_MPLOCK_DECLARE;
394 int error;
395
396 ap.a_head.a_desc = &vop_read_desc;
397 ap.a_head.a_ops = ops;
398 ap.a_vp = vp;
399 ap.a_uio = uio;
400 ap.a_ioflag = ioflag;
401 ap.a_cred = cred;
402
403 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_RD_MPSAFE);
404 DO_OPS(ops, error, &ap, vop_read);
405 VFS_MPUNLOCK(vp->v_mount);
406 return(error);
407 }
408
409 /*
410 * MPSAFE
411 */
412 int
413 vop_write(struct vop_ops *ops, struct vnode *vp, struct uio *uio, int ioflag,
414 struct ucred *cred)
415 {
416 struct vop_write_args ap;
417 VFS_MPLOCK_DECLARE;
418 int error, do_accounting = 0;
419 struct vattr va;
420 uint64_t size_before=0, size_after=0;
421 struct mount *mp;
422 uint64_t offset, delta;
423
424 ap.a_head.a_desc = &vop_write_desc;
425 ap.a_head.a_ops = ops;
426 ap.a_vp = vp;
427 ap.a_uio = uio;
428 ap.a_ioflag = ioflag;
429 ap.a_cred = cred;
430
431 /* is this a regular vnode ? */
432 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_WR_MPSAFE);
433 if (vfs_quota_enabled && (vp->v_type == VREG)) {
434 if ((error = VOP_GETATTR(vp, &va)) != 0)
435 goto done;
436 size_before = va.va_size;
437 /* this file may already have been removed */
438 if (va.va_nlink > 0)
439 do_accounting = 1;
440
441 offset = uio->uio_offset;
442 if (ioflag & IO_APPEND)
443 offset = size_before;
444 size_after = offset + uio->uio_resid;
445 if (size_after < size_before)
446 size_after = size_before;
447 delta = size_after - size_before;
448 mp = vq_vptomp(vp);
449 /* QUOTA CHECK */
450 if (!vq_write_ok(mp, va.va_uid, va.va_gid, delta)) {
451 error = EDQUOT;
452 goto done;
453 }
454 }
455 DO_OPS(ops, error, &ap, vop_write);
456 if ((error == 0) && do_accounting) {
457 VFS_ACCOUNT(mp, va.va_uid, va.va_gid, size_after - size_before);
458 }
459 done:
460 VFS_MPUNLOCK(vp->v_mount);
461 return(error);
462 }
463
464 /*
465 * MPSAFE
466 */
467 int
468 vop_ioctl(struct vop_ops *ops, struct vnode *vp, u_long command, caddr_t data,
469 int fflag, struct ucred *cred, struct sysmsg *msg)
470 {
471 struct vop_ioctl_args ap;
472 VFS_MPLOCK_DECLARE;
473 int error;
474
475 ap.a_head.a_desc = &vop_ioctl_desc;
476 ap.a_head.a_ops = ops;
477 ap.a_vp = vp;
478 ap.a_command = command;
479 ap.a_data = data;
480 ap.a_fflag = fflag;
481 ap.a_cred = cred;
482 ap.a_sysmsg = msg;
483
484 VFS_MPLOCK1(vp->v_mount);
485 DO_OPS(ops, error, &ap, vop_ioctl);
486 VFS_MPUNLOCK(vp->v_mount);
487 return(error);
488 }
489
490 /*
491 * MPSAFE
492 */
493 int
494 vop_poll(struct vop_ops *ops, struct vnode *vp, int events, struct ucred *cred)
495 {
496 struct vop_poll_args ap;
497 VFS_MPLOCK_DECLARE;
498 int error;
499
500 ap.a_head.a_desc = &vop_poll_desc;
501 ap.a_head.a_ops = ops;
502 ap.a_vp = vp;
503 ap.a_events = events;
504 ap.a_cred = cred;
505
506 VFS_MPLOCK1(vp->v_mount);
507 DO_OPS(ops, error, &ap, vop_poll);
508 VFS_MPUNLOCK(vp->v_mount);
509 return(error);
510 }
511
512 /*
513 * MPSAFE
514 */
515 int
516 vop_kqfilter(struct vop_ops *ops, struct vnode *vp, struct knote *kn)
517 {
518 struct vop_kqfilter_args ap;
519 VFS_MPLOCK_DECLARE;
520 int error;
521
522 ap.a_head.a_desc = &vop_kqfilter_desc;
523 ap.a_head.a_ops = ops;
524 ap.a_vp = vp;
525 ap.a_kn = kn;
526
527 VFS_MPLOCK1(vp->v_mount);
528 DO_OPS(ops, error, &ap, vop_kqfilter);
529 VFS_MPUNLOCK(vp->v_mount);
530 return(error);
531 }
532
533 /*
534 * MPSAFE
535 */
536 int
537 vop_mmap(struct vop_ops *ops, struct vnode *vp, int fflags, struct ucred *cred)
538 {
539 struct vop_mmap_args ap;
540 VFS_MPLOCK_DECLARE;
541 int error;
542
543 ap.a_head.a_desc = &vop_mmap_desc;
544 ap.a_head.a_ops = ops;
545 ap.a_vp = vp;
546 ap.a_fflags = fflags;
547 ap.a_cred = cred;
548
549 VFS_MPLOCK1(vp->v_mount);
550 DO_OPS(ops, error, &ap, vop_mmap);
551 VFS_MPUNLOCK(vp->v_mount);
552 return(error);
553 }
554
555 /*
556 * MPSAFE
557 */
558 int
559 vop_fsync(struct vop_ops *ops, struct vnode *vp, int waitfor, int flags)
560 {
561 struct vop_fsync_args ap;
562 VFS_MPLOCK_DECLARE;
563 int error;
564
565 ap.a_head.a_desc = &vop_fsync_desc;
566 ap.a_head.a_ops = ops;
567 ap.a_vp = vp;
568 ap.a_waitfor = waitfor;
569 ap.a_flags = flags;
570
571 VFS_MPLOCK1(vp->v_mount);
572 DO_OPS(ops, error, &ap, vop_fsync);
573 VFS_MPUNLOCK(vp->v_mount);
574 return(error);
575 }
576
577 /*
578 * MPSAFE
579 */
580 int
581 vop_old_remove(struct vop_ops *ops, struct vnode *dvp,
582 struct vnode *vp, struct componentname *cnp)
583 {
584 struct vop_old_remove_args ap;
585 VFS_MPLOCK_DECLARE;
586 int error;
587
588 ap.a_head.a_desc = &vop_old_remove_desc;
589 ap.a_head.a_ops = ops;
590 ap.a_dvp = dvp;
591 ap.a_vp = vp;
592 ap.a_cnp = cnp;
593
594 VFS_MPLOCK1(dvp->v_mount);
595 DO_OPS(ops, error, &ap, vop_old_remove);
596 VFS_MPUNLOCK(dvp->v_mount);
597 return(error);
598 }
599
600 /*
601 * MPSAFE
602 */
603 int
604 vop_old_link(struct vop_ops *ops, struct vnode *tdvp,
605 struct vnode *vp, struct componentname *cnp)
606 {
607 struct vop_old_link_args ap;
608 VFS_MPLOCK_DECLARE;
609 int error;
610
611 ap.a_head.a_desc = &vop_old_link_desc;
612 ap.a_head.a_ops = ops;
613 ap.a_tdvp = tdvp;
614 ap.a_vp = vp;
615 ap.a_cnp = cnp;
616
617 VFS_MPLOCK1(tdvp->v_mount);
618 DO_OPS(ops, error, &ap, vop_old_link);
619 VFS_MPUNLOCK(tdvp->v_mount);
620 return(error);
621 }
622
623 /*
624 * MPSAFE
625 */
626 int
627 vop_old_rename(struct vop_ops *ops,
628 struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
629 struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp)
630 {
631 struct vop_old_rename_args ap;
632 VFS_MPLOCK_DECLARE;
633 int error;
634
635 ap.a_head.a_desc = &vop_old_rename_desc;
636 ap.a_head.a_ops = ops;
637 ap.a_fdvp = fdvp;
638 ap.a_fvp = fvp;
639 ap.a_fcnp = fcnp;
640 ap.a_tdvp = tdvp;
641 ap.a_tvp = tvp;
642 ap.a_tcnp = tcnp;
643
644 VFS_MPLOCK1(tdvp->v_mount);
645 DO_OPS(ops, error, &ap, vop_old_rename);
646 VFS_MPUNLOCK(tdvp->v_mount);
647 return(error);
648 }
649
650 /*
651 * MPSAFE
652 */
653 int
654 vop_old_mkdir(struct vop_ops *ops, struct vnode *dvp,
655 struct vnode **vpp, struct componentname *cnp, struct vattr *vap)
656 {
657 struct vop_old_mkdir_args ap;
658 VFS_MPLOCK_DECLARE;
659 int error;
660
661 ap.a_head.a_desc = &vop_old_mkdir_desc;
662 ap.a_head.a_ops = ops;
663 ap.a_dvp = dvp;
664 ap.a_vpp = vpp;
665 ap.a_cnp = cnp;
666 ap.a_vap = vap;
667
668 VFS_MPLOCK1(dvp->v_mount);
669 DO_OPS(ops, error, &ap, vop_old_mkdir);
670 VFS_MPUNLOCK(dvp->v_mount);
671 return(error);
672 }
673
674 /*
675 * MPSAFE
676 */
677 int
678 vop_old_rmdir(struct vop_ops *ops, struct vnode *dvp,
679 struct vnode *vp, struct componentname *cnp)
680 {
681 struct vop_old_rmdir_args ap;
682 VFS_MPLOCK_DECLARE;
683 int error;
684
685 ap.a_head.a_desc = &vop_old_rmdir_desc;
686 ap.a_head.a_ops = ops;
687 ap.a_dvp = dvp;
688 ap.a_vp = vp;
689 ap.a_cnp = cnp;
690
691 VFS_MPLOCK1(dvp->v_mount);
692 DO_OPS(ops, error, &ap, vop_old_rmdir);
693 VFS_MPUNLOCK(dvp->v_mount);
694 return(error);
695 }
696
697 /*
698 * MPSAFE
699 */
700 int
701 vop_old_symlink(struct vop_ops *ops, struct vnode *dvp,
702 struct vnode **vpp, struct componentname *cnp,
703 struct vattr *vap, char *target)
704 {
705 struct vop_old_symlink_args ap;
706 VFS_MPLOCK_DECLARE;
707 int error;
708
709 ap.a_head.a_desc = &vop_old_symlink_desc;
710 ap.a_head.a_ops = ops;
711 ap.a_dvp = dvp;
712 ap.a_vpp = vpp;
713 ap.a_cnp = cnp;
714 ap.a_vap = vap;
715 ap.a_target = target;
716
717 VFS_MPLOCK1(dvp->v_mount);
718 DO_OPS(ops, error, &ap, vop_old_symlink);
719 VFS_MPUNLOCK(dvp->v_mount);
720 return(error);
721 }
722
723 /*
724 * MPSAFE
725 */
726 int
727 vop_readdir(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
728 struct ucred *cred, int *eofflag, int *ncookies, off_t **cookies)
729 {
730 struct vop_readdir_args ap;
731 VFS_MPLOCK_DECLARE;
732 int error;
733
734 ap.a_head.a_desc = &vop_readdir_desc;
735 ap.a_head.a_ops = ops;
736 ap.a_vp = vp;
737 ap.a_uio = uio;
738 ap.a_cred = cred;
739 ap.a_eofflag = eofflag;
740 ap.a_ncookies = ncookies;
741 ap.a_cookies = cookies;
742
743 VFS_MPLOCK1(vp->v_mount);
744 DO_OPS(ops, error, &ap, vop_readdir);
745 VFS_MPUNLOCK(vp->v_mount);
746 return(error);
747 }
748
749 /*
750 * MPSAFE
751 */
752 int
753 vop_readlink(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
754 struct ucred *cred)
755 {
756 struct vop_readlink_args ap;
757 VFS_MPLOCK_DECLARE;
758 int error;
759
760 ap.a_head.a_desc = &vop_readlink_desc;
761 ap.a_head.a_ops = ops;
762 ap.a_vp = vp;
763 ap.a_uio = uio;
764 ap.a_cred = cred;
765
766 VFS_MPLOCK1(vp->v_mount);
767 DO_OPS(ops, error, &ap, vop_readlink);
768 VFS_MPUNLOCK(vp->v_mount);
769 return(error);
770 }
771
772 /*
773 * MPSAFE
774 */
775 int
776 vop_inactive(struct vop_ops *ops, struct vnode *vp)
777 {
778 struct vop_inactive_args ap;
779 struct mount *mp;
780 VFS_MPLOCK_DECLARE;
781 int error;
782
783 ap.a_head.a_desc = &vop_inactive_desc;
784 ap.a_head.a_ops = ops;
785 ap.a_vp = vp;
786
787 /*
788 * WARNING! Deactivation of the vnode can cause it to be recycled,
789 * clearing vp->v_mount.
790 */
791 mp = vp->v_mount;
792 VFS_MPLOCK_FLAG(mp, MNTK_IN_MPSAFE);
793 DO_OPS(ops, error, &ap, vop_inactive);
794 VFS_MPUNLOCK(mp);
795 return(error);
796 }
797
798 /*
799 * MPSAFE
800 */
801 int
802 vop_reclaim(struct vop_ops *ops, struct vnode *vp)
803 {
804 struct vop_reclaim_args ap;
805 struct mount *mp;
806 VFS_MPLOCK_DECLARE;
807 int error;
808
809 ap.a_head.a_desc = &vop_reclaim_desc;
810 ap.a_head.a_ops = ops;
811 ap.a_vp = vp;
812
813 /*
814 * WARNING! Reclamation of the vnode will clear vp->v_mount.
815 */
816 mp = vp->v_mount;
817 VFS_MPLOCK1(mp);
818 DO_OPS(ops, error, &ap, vop_reclaim);
819 VFS_MPUNLOCK(mp);
820 return(error);
821 }
822
823 /*
824 * MPSAFE
825 */
826 int
827 vop_bmap(struct vop_ops *ops, struct vnode *vp, off_t loffset,
828 off_t *doffsetp, int *runp, int *runb, buf_cmd_t cmd)
829 {
830 struct vop_bmap_args ap;
831 VFS_MPLOCK_DECLARE;
832 int error;
833
834 ap.a_head.a_desc = &vop_bmap_desc;
835 ap.a_head.a_ops = ops;
836 ap.a_vp = vp;
837 ap.a_loffset = loffset;
838 ap.a_doffsetp = doffsetp;
839 ap.a_runp = runp;
840 ap.a_runb = runb;
841 ap.a_cmd = cmd;
842
843 VFS_MPLOCK1(vp->v_mount);
844 DO_OPS(ops, error, &ap, vop_bmap);
845 VFS_MPUNLOCK(vp->v_mount);
846 return(error);
847 }
848
849 /*
850 * MPSAFE
851 */
852 int
853 vop_strategy(struct vop_ops *ops, struct vnode *vp, struct bio *bio)
854 {
855 struct vop_strategy_args ap;
856 VFS_MPLOCK_DECLARE;
857 int error;
858
859 ap.a_head.a_desc = &vop_strategy_desc;
860 ap.a_head.a_ops = ops;
861 ap.a_vp = vp;
862 ap.a_bio = bio;
863
864 if (vp->v_mount) {
865 VFS_MPLOCK_FLAG(vp->v_mount, MNTK_SG_MPSAFE);
866 DO_OPS(ops, error, &ap, vop_strategy);
867 VFS_MPUNLOCK(vp->v_mount);
868 } else {
869 /* ugly hack for swap */
870 get_mplock();
871 DO_OPS(ops, error, &ap, vop_strategy);
872 rel_mplock();
873 }
874 return(error);
875 }
876
877 /*
878 * MPSAFE
879 */
880 int
881 vop_print(struct vop_ops *ops, struct vnode *vp)
882 {
883 struct vop_print_args ap;
884 VFS_MPLOCK_DECLARE;
885 int error;
886
887 ap.a_head.a_desc = &vop_print_desc;
888 ap.a_head.a_ops = ops;
889 ap.a_vp = vp;
890
891 VFS_MPLOCK1(vp->v_mount);
892 DO_OPS(ops, error, &ap, vop_print);
893 VFS_MPUNLOCK(vp->v_mount);
894 return(error);
895 }
896
897 /*
898 * MPSAFE
899 */
900 int
901 vop_pathconf(struct vop_ops *ops, struct vnode *vp, int name,
902 register_t *retval)
903 {
904 struct vop_pathconf_args ap;
905 VFS_MPLOCK_DECLARE;
906 int error;
907
908 ap.a_head.a_desc = &vop_pathconf_desc;
909 ap.a_head.a_ops = ops;
910 ap.a_vp = vp;
911 ap.a_name = name;
912 ap.a_retval = retval;
913
914 VFS_MPLOCK1(vp->v_mount);
915 DO_OPS(ops, error, &ap, vop_pathconf);
916 VFS_MPUNLOCK(vp->v_mount);
917 return(error);
918 }
919
920 /*
921 * MPSAFE
922 */
923 int
924 vop_advlock(struct vop_ops *ops, struct vnode *vp, caddr_t id, int op,
925 struct flock *fl, int flags)
926 {
927 struct vop_advlock_args ap;
928 VFS_MPLOCK_DECLARE;
929 int error;
930
931 ap.a_head.a_desc = &vop_advlock_desc;
932 ap.a_head.a_ops = ops;
933 ap.a_vp = vp;
934 ap.a_id = id;
935 ap.a_op = op;
936 ap.a_fl = fl;
937 ap.a_flags = flags;
938
939 VFS_MPLOCK1(vp->v_mount);
940 DO_OPS(ops, error, &ap, vop_advlock);
941 VFS_MPUNLOCK(vp->v_mount);
942 return(error);
943 }
944
945 /*
946 * MPSAFE
947 */
948 int
949 vop_balloc(struct vop_ops *ops, struct vnode *vp, off_t startoffset,
950 int size, struct ucred *cred, int flags,
951 struct buf **bpp)
952 {
953 struct vop_balloc_args ap;
954 VFS_MPLOCK_DECLARE;
955 int error;
956
957 ap.a_head.a_desc = &vop_balloc_desc;
958 ap.a_head.a_ops = ops;
959 ap.a_vp = vp;
960 ap.a_startoffset = startoffset;
961 ap.a_size = size;
962 ap.a_cred = cred;
963 ap.a_flags = flags;
964 ap.a_bpp = bpp;
965
966 VFS_MPLOCK1(vp->v_mount);
967 DO_OPS(ops, error, &ap, vop_balloc);
968 VFS_MPUNLOCK(vp->v_mount);
969 return(error);
970 }
971
972 /*
973 * MPSAFE
974 */
975 int
976 vop_reallocblks(struct vop_ops *ops, struct vnode *vp,
977 struct cluster_save *buflist)
978 {
979 struct vop_reallocblks_args ap;
980 VFS_MPLOCK_DECLARE;
981 int error;
982
983 ap.a_head.a_desc = &vop_reallocblks_desc;
984 ap.a_head.a_ops = ops;
985 ap.a_vp = vp;
986 ap.a_buflist = buflist;
987
988 VFS_MPLOCK1(vp->v_mount);
989 DO_OPS(ops, error, &ap, vop_reallocblks);
990 VFS_MPUNLOCK(vp->v_mount);
991 return(error);
992 }
993
994 /*
995 * MPSAFE
996 */
997 int
998 vop_getpages(struct vop_ops *ops, struct vnode *vp, vm_page_t *m, int count,
999 int reqpage, vm_ooffset_t offset, int seqaccess)
1000 {
1001 struct vop_getpages_args ap;
1002 VFS_MPLOCK_DECLARE;
1003 int error;
1004
1005 ap.a_head.a_desc = &vop_getpages_desc;
1006 ap.a_head.a_ops = ops;
1007 ap.a_vp = vp;
1008 ap.a_m = m;
1009 ap.a_count = count;
1010 ap.a_reqpage = reqpage;
1011 ap.a_offset = offset;
1012 ap.a_seqaccess = seqaccess;
1013
1014 VFS_MPLOCK1(vp->v_mount);
1015 DO_OPS(ops, error, &ap, vop_getpages);
1016 VFS_MPUNLOCK(vp->v_mount);
1017 return(error);
1018 }
1019
1020 /*
1021 * MPSAFE
1022 */
1023 int
1024 vop_putpages(struct vop_ops *ops, struct vnode *vp, vm_page_t *m, int count,
1025 int sync, int *rtvals, vm_ooffset_t offset)
1026 {
1027 struct vop_putpages_args ap;
1028 VFS_MPLOCK_DECLARE;
1029 int error;
1030
1031 ap.a_head.a_desc = &vop_putpages_desc;
1032 ap.a_head.a_ops = ops;
1033 ap.a_vp = vp;
1034 ap.a_m = m;
1035 ap.a_count = count;
1036 ap.a_sync = sync;
1037 ap.a_rtvals = rtvals;
1038 ap.a_offset = offset;
1039
1040 VFS_MPLOCK1(vp->v_mount);
1041 DO_OPS(ops, error, &ap, vop_putpages);
1042 VFS_MPUNLOCK(vp->v_mount);
1043 return(error);
1044 }
1045
1046 /*
1047 * MPSAFE
1048 */
1049 int
1050 vop_freeblks(struct vop_ops *ops, struct vnode *vp, off_t offset, int length)
1051 {
1052 struct vop_freeblks_args ap;
1053 VFS_MPLOCK_DECLARE;
1054 int error;
1055
1056 ap.a_head.a_desc = &vop_freeblks_desc;
1057 ap.a_head.a_ops = ops;
1058 ap.a_vp = vp;
1059 ap.a_offset = offset;
1060 ap.a_length = length;
1061
1062 VFS_MPLOCK1(vp->v_mount);
1063 DO_OPS(ops, error, &ap, vop_freeblks);
1064 VFS_MPUNLOCK(vp->v_mount);
1065 return(error);
1066 }
1067
1068 /*
1069 * MPSAFE
1070 */
1071 int
1072 vop_getacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
1073 struct acl *aclp, struct ucred *cred)
1074 {
1075 struct vop_getacl_args ap;
1076 VFS_MPLOCK_DECLARE;
1077 int error;
1078
1079 ap.a_head.a_desc = &vop_getacl_desc;
1080 ap.a_head.a_ops = ops;
1081 ap.a_vp = vp;
1082 ap.a_type = type;
1083 ap.a_aclp = aclp;
1084 ap.a_cred = cred;
1085
1086 VFS_MPLOCK1(vp->v_mount);
1087 DO_OPS(ops, error, &ap, vop_getacl);
1088 VFS_MPUNLOCK(vp->v_mount);
1089 return(error);
1090 }
1091
1092 /*
1093 * MPSAFE
1094 */
1095 int
1096 vop_setacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
1097 struct acl *aclp, struct ucred *cred)
1098 {
1099 struct vop_setacl_args ap;
1100 VFS_MPLOCK_DECLARE;
1101 int error;
1102
1103 ap.a_head.a_desc = &vop_setacl_desc;
1104 ap.a_head.a_ops = ops;
1105 ap.a_vp = vp;
1106 ap.a_type = type;
1107 ap.a_aclp = aclp;
1108 ap.a_cred = cred;
1109
1110 VFS_MPLOCK1(vp->v_mount);
1111 DO_OPS(ops, error, &ap, vop_setacl);
1112 VFS_MPUNLOCK(vp->v_mount);
1113 return(error);
1114 }
1115
1116 /*
1117 * MPSAFE
1118 */
1119 int
1120 vop_aclcheck(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
1121 struct acl *aclp, struct ucred *cred)
1122 {
1123 struct vop_aclcheck_args ap;
1124 VFS_MPLOCK_DECLARE;
1125 int error;
1126
1127 ap.a_head.a_desc = &vop_aclcheck_desc;
1128 ap.a_head.a_ops = ops;
1129 ap.a_vp = vp;
1130 ap.a_type = type;
1131 ap.a_aclp = aclp;
1132 ap.a_cred = cred;
1133
1134 VFS_MPLOCK1(vp->v_mount);
1135 DO_OPS(ops, error, &ap, vop_aclcheck);
1136 VFS_MPUNLOCK(vp->v_mount);
1137 return(error);
1138 }
1139
1140 /*
1141 * MPSAFE
1142 */
1143 int
1144 vop_getextattr(struct vop_ops *ops, struct vnode *vp, int attrnamespace,
1145 char *attrname, struct uio *uio, struct ucred *cred)
1146 {
1147 struct vop_getextattr_args ap;
1148 VFS_MPLOCK_DECLARE;
1149 int error;
1150
1151 ap.a_head.a_desc = &vop_getextattr_desc;
1152 ap.a_head.a_ops = ops;
1153 ap.a_vp = vp;
1154 ap.a_attrnamespace = attrnamespace;
1155 ap.a_attrname = attrname;
1156 ap.a_uio = uio;
1157 ap.a_cred = cred;
1158
1159 VFS_MPLOCK1(vp->v_mount);
1160 DO_OPS(ops, error, &ap, vop_getextattr);
1161 VFS_MPUNLOCK(vp->v_mount);
1162 return(error);
1163 }
1164
1165 /*
1166 * MPSAFE
1167 */
1168 int
1169 vop_setextattr(struct vop_ops *ops, struct vnode *vp, int attrnamespace,
1170 char *attrname, struct uio *uio, struct ucred *cred)
1171 {
1172 struct vop_setextattr_args ap;
1173 VFS_MPLOCK_DECLARE;
1174 int error;
1175
1176 ap.a_head.a_desc = &vop_setextattr_desc;
1177 ap.a_head.a_ops = ops;
1178 ap.a_vp = vp;
1179 ap.a_attrnamespace = attrnamespace;
1180 ap.a_attrname = attrname;
1181 ap.a_uio = uio;
1182 ap.a_cred = cred;
1183
1184 VFS_MPLOCK1(vp->v_mount);
1185 DO_OPS(ops, error, &ap, vop_setextattr);
1186 VFS_MPUNLOCK(vp->v_mount);
1187 return(error);
1188 }
1189
1190 /*
1191 * MPSAFE
1192 */
1193 int
1194 vop_mountctl(struct vop_ops *ops, struct vnode *vp, int op, struct file *fp,
1195 const void *ctl, int ctllen, void *buf, int buflen, int *res)
1196 {
1197 struct vop_mountctl_args ap;
1198 VFS_MPLOCK_DECLARE;
1199 int error;
1200
1201 ap.a_head.a_desc = &vop_mountctl_desc;
1202 ap.a_head.a_ops = ops;
1203 ap.a_op = op;
1204 ap.a_ctl = ctl;
1205 ap.a_fp = fp;
1206 ap.a_ctllen = ctllen;
1207 ap.a_buf = buf;
1208 ap.a_buflen = buflen;
1209 ap.a_res = res;
1210
1211 VFS_MPLOCK1(vp->v_mount);
1212 DO_OPS(ops, error, &ap, vop_mountctl);
1213 VFS_MPUNLOCK(vp->v_mount);
1214 return(error);
1215 }
1216
1217 /*
1218 * MPSAFE
1219 */
1220 int
1221 vop_markatime(struct vop_ops *ops, struct vnode *vp, struct ucred *cred)
1222 {
1223 struct vop_markatime_args ap;
1224 VFS_MPLOCK_DECLARE;
1225 int error;
1226
1227 ap.a_head.a_desc = &vop_markatime_desc;
1228 ap.a_head.a_ops = ops;
1229 ap.a_vp = vp;
1230 ap.a_cred = cred;
1231
1232 VFS_MPLOCK1(vp->v_mount);
1233 DO_OPS(ops, error, &ap, vop_markatime);
1234 VFS_MPUNLOCK(vp->v_mount);
1235 return(error);
1236 }
1237
1238 /*
1239 * NEW API FUNCTIONS
1240 *
1241 * nresolve takes a locked ncp, a referenced but unlocked dvp, and a cred,
1242 * and resolves the ncp into a positive or negative hit.
1243 *
1244 * The namecache is automatically adjusted by this function. The ncp
1245 * is left locked on return.
1246 *
1247 * MPSAFE
1248 */
1249 int
1250 vop_nresolve(struct vop_ops *ops, struct nchandle *nch,
1251 struct vnode *dvp, struct ucred *cred)
1252 {
1253 struct vop_nresolve_args ap;
1254 VFS_MPLOCK_DECLARE;
1255 int error;
1256
1257 ap.a_head.a_desc = &vop_nresolve_desc;
1258 ap.a_head.a_ops = ops;
1259 ap.a_nch = nch;
1260 ap.a_dvp = dvp;
1261 ap.a_cred = cred;
1262
1263 VFS_MPLOCK1(dvp->v_mount);
1264 DO_OPS(ops, error, &ap, vop_nresolve);
1265 VFS_MPUNLOCK(dvp->v_mount);
1266 return(error);
1267 }
1268
1269 /*
1270 * nlookupdotdot takes an unlocked directory, referenced dvp, and looks
1271 * up "..", returning a locked parent directory in *vpp. If an error
1272 * occurs *vpp will be NULL.
1273 *
1274 * MPSAFE
1275 */
1276 int
1277 vop_nlookupdotdot(struct vop_ops *ops, struct vnode *dvp,
1278 struct vnode **vpp, struct ucred *cred, char **fakename)
1279 {
1280 struct vop_nlookupdotdot_args ap;
1281 VFS_MPLOCK_DECLARE;
1282 int error;
1283
1284 ap.a_head.a_desc = &vop_nlookupdotdot_desc;
1285 ap.a_head.a_ops = ops;
1286 ap.a_dvp = dvp;
1287 ap.a_vpp = vpp;
1288 ap.a_cred = cred;
1289 ap.a_fakename = fakename;
1290
1291 VFS_MPLOCK1(dvp->v_mount);
1292 DO_OPS(ops, error, &ap, vop_nlookupdotdot);
1293 VFS_MPUNLOCK(dvp->v_mount);
1294 return(error);
1295 }
1296
1297 /*
1298 * ncreate takes a locked, resolved ncp that typically represents a negative
1299 * cache hit and creates the file or node specified by the ncp, cred, and
1300 * vattr. If no error occurs a locked vnode is returned in *vpp.
1301 *
1302 * The dvp passed in is referenced but unlocked.
1303 *
1304 * The namecache is automatically adjusted by this function. The ncp
1305 * is left locked on return.
1306 *
1307 * MPSAFE
1308 */
1309 int
1310 vop_ncreate(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1311 struct vnode **vpp, struct ucred *cred, struct vattr *vap)
1312 {
1313 struct vop_ncreate_args ap;
1314 VFS_MPLOCK_DECLARE;
1315 int error;
1316
1317 ap.a_head.a_desc = &vop_ncreate_desc;
1318 ap.a_head.a_ops = ops;
1319 ap.a_nch = nch;
1320 ap.a_dvp = dvp;
1321 ap.a_vpp = vpp;
1322 ap.a_cred = cred;
1323 ap.a_vap = vap;
1324
1325 VFS_MPLOCK1(dvp->v_mount);
1326 DO_OPS(ops, error, &ap, vop_ncreate);
1327 VFS_MPUNLOCK(dvp->v_mount);
1328 return(error);
1329 }
1330
1331 /*
1332 * nmkdir takes a locked, resolved ncp that typically represents a negative
1333 * cache hit and creates the directory specified by the ncp, cred, and
1334 * vattr. If no error occurs a locked vnode is returned in *vpp.
1335 *
1336 * The dvp passed in is referenced but unlocked.
1337 *
1338 * The namecache is automatically adjusted by this function. The ncp
1339 * is left locked on return.
1340 *
1341 * MPSAFE
1342 */
1343 int
1344 vop_nmkdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1345 struct vnode **vpp, struct ucred *cred, struct vattr *vap)
1346 {
1347 struct vop_nmkdir_args ap;
1348 VFS_MPLOCK_DECLARE;
1349 int error;
1350
1351 ap.a_head.a_desc = &vop_nmkdir_desc;
1352 ap.a_head.a_ops = ops;
1353 ap.a_nch = nch;
1354 ap.a_dvp = dvp;
1355 ap.a_vpp = vpp;
1356 ap.a_cred = cred;
1357 ap.a_vap = vap;
1358
1359 VFS_MPLOCK1(dvp->v_mount);
1360 DO_OPS(ops, error, &ap, vop_nmkdir);
1361 VFS_MPUNLOCK(dvp->v_mount);
1362 return(error);
1363 }
1364
1365 /*
1366 * nmknod takes a locked, resolved ncp that typically represents a negative
1367 * cache hit and creates the node specified by the ncp, cred, and
1368 * vattr. If no error occurs a locked vnode is returned in *vpp.
1369 *
1370 * The dvp passed in is referenced but unlocked.
1371 *
1372 * The namecache is automatically adjusted by this function. The ncp
1373 * is left locked on return.
1374 *
1375 * MPSAFE
1376 */
1377 int
1378 vop_nmknod(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1379 struct vnode **vpp, struct ucred *cred, struct vattr *vap)
1380 {
1381 struct vop_nmknod_args ap;
1382 VFS_MPLOCK_DECLARE;
1383 int error;
1384
1385 ap.a_head.a_desc = &vop_nmknod_desc;
1386 ap.a_head.a_ops = ops;
1387 ap.a_nch = nch;
1388 ap.a_dvp = dvp;
1389 ap.a_vpp = vpp;
1390 ap.a_cred = cred;
1391 ap.a_vap = vap;
1392
1393 VFS_MPLOCK1(dvp->v_mount);
1394 DO_OPS(ops, error, &ap, vop_nmknod);
1395 VFS_MPUNLOCK(dvp->v_mount);
1396 return(error);
1397 }
1398
1399 /*
1400 * nlink takes a locked, resolved ncp that typically represents a negative
1401 * cache hit and creates the node specified by the ncp, cred, and
1402 * existing vnode. The passed vp must be locked and will remain locked
1403 * on return, as does the ncp, whether an error occurs or not.
1404 *
1405 * The dvp passed in is referenced but unlocked.
1406 *
1407 * The namecache is automatically adjusted by this function. The ncp
1408 * is left locked on return.
1409 *
1410 * MPSAFE
1411 */
1412 int
1413 vop_nlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1414 struct vnode *vp, struct ucred *cred)
1415 {
1416 struct vop_nlink_args ap;
1417 VFS_MPLOCK_DECLARE;
1418 int error;
1419
1420 ap.a_head.a_desc = &vop_nlink_desc;
1421 ap.a_head.a_ops = ops;
1422 ap.a_nch = nch;
1423 ap.a_dvp = dvp;
1424 ap.a_vp = vp;
1425 ap.a_cred = cred;
1426
1427 VFS_MPLOCK1(dvp->v_mount);
1428 DO_OPS(ops, error, &ap, vop_nlink);
1429 VFS_MPUNLOCK(dvp->v_mount);
1430 return(error);
1431 }
1432
1433 /*
1434 * nsymlink takes a locked, resolved ncp that typically represents a negative
1435 * cache hit and creates a symbolic link based on cred, vap, and target (the
1436 * contents of the link). If no error occurs a locked vnode is returned in
1437 * *vpp.
1438 *
1439 * The dvp passed in is referenced but unlocked.
1440 *
1441 * The namecache is automatically adjusted by this function. The ncp
1442 * is left locked on return.
1443 *
1444 * MPSAFE
1445 */
1446 int
1447 vop_nsymlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1448 struct vnode **vpp, struct ucred *cred,
1449 struct vattr *vap, char *target)
1450 {
1451 struct vop_nsymlink_args ap;
1452 VFS_MPLOCK_DECLARE;
1453 int error;
1454
1455 ap.a_head.a_desc = &vop_nsymlink_desc;
1456 ap.a_head.a_ops = ops;
1457 ap.a_nch = nch;
1458 ap.a_dvp = dvp;
1459 ap.a_vpp = vpp;
1460 ap.a_cred = cred;
1461 ap.a_vap = vap;
1462 ap.a_target = target;
1463
1464 VFS_MPLOCK1(dvp->v_mount);
1465 DO_OPS(ops, error, &ap, vop_nsymlink);
1466 VFS_MPUNLOCK(dvp->v_mount);
1467 return(error);
1468 }
1469
1470 /*
1471 * nwhiteout takes a locked, resolved ncp that can represent a positive or
1472 * negative hit and executes the whiteout function specified in flags.
1473 *
1474 * The dvp passed in is referenced but unlocked.
1475 *
1476 * The namecache is automatically adjusted by this function. The ncp
1477 * is left locked on return.
1478 *
1479 * MPSAFE
1480 */
1481 int
1482 vop_nwhiteout(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1483 struct ucred *cred, int flags)
1484 {
1485 struct vop_nwhiteout_args ap;
1486 VFS_MPLOCK_DECLARE;
1487 int error;
1488
1489 ap.a_head.a_desc = &vop_nwhiteout_desc;
1490 ap.a_head.a_ops = ops;
1491 ap.a_nch = nch;
1492 ap.a_dvp = dvp;
1493 ap.a_cred = cred;
1494 ap.a_flags = flags;
1495
1496 VFS_MPLOCK1(dvp->v_mount);
1497 DO_OPS(ops, error, &ap, vop_nwhiteout);
1498 VFS_MPUNLOCK(dvp->v_mount);
1499 return(error);
1500 }
1501
1502 /*
1503 * nremove takes a locked, resolved ncp that generally represents a
1504 * positive hit and removes the file.
1505 *
1506 * The dvp passed in is referenced but unlocked.
1507 *
1508 * The namecache is automatically adjusted by this function. The ncp
1509 * is left locked on return.
1510 *
1511 * MPSAFE
1512 */
1513 int
1514 vop_nremove(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1515 struct ucred *cred)
1516 {
1517 struct vop_nremove_args ap;
1518 VFS_MPLOCK_DECLARE;
1519 int error;
1520 struct vattr va;
1521
1522 ap.a_head.a_desc = &vop_nremove_desc;
1523 ap.a_head.a_ops = ops;
1524 ap.a_nch = nch;
1525 ap.a_dvp = dvp;
1526 ap.a_cred = cred;
1527
1528 if ((error = VOP_GETATTR(nch->ncp->nc_vp, &va)) != 0)
1529 return (error);
1530
1531 VFS_MPLOCK1(dvp->v_mount);
1532 DO_OPS(ops, error, &ap, vop_nremove);
1533 /* Only update space counters if this is the last hard link */
1534 if ((error == 0) && (va.va_nlink == 1)) {
1535 VFS_ACCOUNT(nch->mount, va.va_uid, va.va_gid, -va.va_size);
1536 }
1537 VFS_MPUNLOCK(dvp->v_mount);
1538 return(error);
1539 }
1540
1541 /*
1542 * nrmdir takes a locked, resolved ncp that generally represents a
1543 * directory and removes the directory.
1544 *
1545 * The dvp passed in is referenced but unlocked.
1546 *
1547 * The namecache is automatically adjusted by this function. The ncp
1548 * is left locked on return.
1549 *
1550 * MPSAFE
1551 */
1552 int
1553 vop_nrmdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
1554 struct ucred *cred)
1555 {
1556 struct vop_nrmdir_args ap;
1557 VFS_MPLOCK_DECLARE;
1558 int error;
1559
1560 ap.a_head.a_desc = &vop_nrmdir_desc;
1561 ap.a_head.a_ops = ops;
1562 ap.a_nch = nch;
1563 ap.a_dvp = dvp;
1564 ap.a_cred = cred;
1565
1566 VFS_MPLOCK1(dvp->v_mount);
1567 DO_OPS(ops, error, &ap, vop_nrmdir);
1568 VFS_MPUNLOCK(dvp->v_mount);
1569 return(error);
1570 }
1571
1572 /*
1573 * nrename takes TWO locked, resolved ncp's and the cred of the caller
1574 * and renames the source ncp to the target ncp. The target ncp may
1575 * represent a positive or negative hit.
1576 *
1577 * The fdvp and tdvp passed in are referenced but unlocked.
1578 *
1579 * The namecache is automatically adjusted by this function. The ncp
1580 * is left locked on return. The source ncp is typically changed to
1581 * a negative cache hit and the target ncp typically takes on the
1582 * source ncp's underlying file.
1583 *
1584 * MPSAFE
1585 */
1586 int
1587 vop_nrename(struct vop_ops *ops,
1588 struct nchandle *fnch, struct nchandle *tnch,
1589 struct vnode *fdvp, struct vnode *tdvp,
1590 struct ucred *cred)
1591 {
1592 struct vop_nrename_args ap;
1593 VFS_MPLOCK_DECLARE;
1594 int error;
1595
1596 ap.a_head.a_desc = &vop_nrename_desc;
1597 ap.a_head.a_ops = ops;
1598 ap.a_fnch = fnch;
1599 ap.a_tnch = tnch;
1600 ap.a_fdvp = fdvp;
1601 ap.a_tdvp = tdvp;
1602 ap.a_cred = cred;
1603
1604 VFS_MPLOCK1(fdvp->v_mount);
1605 DO_OPS(ops, error, &ap, vop_nrename);
1606 VFS_MPUNLOCK(fdvp->v_mount);
1607 return(error);
1608 }
1609
1610 /************************************************************************
1611 * PRIMARY VNODE OPERATIONS FORWARDING CALLS *
1612 ************************************************************************
1613 *
1614 * These procedures are called from VFSs such as unionfs and nullfs
1615 * when they wish to forward an operation on one VFS to another. The
1616 * argument structure/message is modified and then directly passed to the
1617 * appropriate routine. This routines may also be called by initiators
1618 * who have an argument structure in hand rather then discreet arguments.
1619 *
1620 * MPSAFE - Caller expected to already hold the appropriate vfs lock.
1621 */
1622 int
1623 vop_vnoperate_ap(struct vop_generic_args *ap)
1624 {
1625 struct vop_ops *ops;
1626 int error;
1627
1628 ops = ap->a_ops;
1629 error = VOCALL(ops, ap);
1630
1631 return (error);
1632 }
1633
1634 /*
1635 * This routine is called by the cache coherency layer to execute the actual
1636 * VFS operation. If a journaling layer is present we call though it, else
1637 * we call the native VOP functions.
1638 */
1639 int
1640 vop_cache_operate_ap(struct vop_generic_args *ap)
1641 {
1642 struct vop_ops *ops;
1643 int error;
1644
1645 ops = ap->a_ops;
1646 if (ops->head.vv_mount->mnt_vn_journal_ops)
1647 error = VOCALL(ops->head.vv_mount->mnt_vn_journal_ops, ap);
1648 else
1649 error = VOCALL(ops->head.vv_mount->mnt_vn_norm_ops, ap);
1650 return (error);
1651 }
1652
1653
1654 /*
1655 * This routine is called by the journaling layer to execute the actual
1656 * VFS operation.
1657 */
1658 int
1659 vop_journal_operate_ap(struct vop_generic_args *ap)
1660 {
1661 struct vop_ops *ops;
1662 int error;
1663
1664 ops = ap->a_ops;
1665 error = VOCALL(ops->head.vv_mount->mnt_vn_norm_ops, ap);
1666
1667 return (error);
1668 }
1669
1670 int
1671 vop_open_ap(struct vop_open_args *ap)
1672 {
1673 int error;
1674
1675 DO_OPS(ap->a_head.a_ops, error, ap, vop_open);
1676 return(error);
1677 }
1678
1679 int
1680 vop_close_ap(struct vop_close_args *ap)
1681 {
1682 int error;
1683
1684 DO_OPS(ap->a_head.a_ops, error, ap, vop_close);
1685 return(error);
1686 }
1687
1688 int
1689 vop_access_ap(struct vop_access_args *ap)
1690 {
1691 int error;
1692
1693 DO_OPS(ap->a_head.a_ops, error, ap, vop_access);
1694 return(error);
1695 }
1696
1697 int
1698 vop_getattr_ap(struct vop_getattr_args *ap)
1699 {
1700 int error;
1701
1702 DO_OPS(ap->a_head.a_ops, error, ap, vop_getattr);
1703 return(error);
1704 }
1705
1706 int
1707 vop_setattr_ap(struct vop_setattr_args *ap)
1708 {
1709 int error;
1710
1711 DO_OPS(ap->a_head.a_ops, error, ap, vop_setattr);
1712 return(error);
1713 }
1714
1715 int
1716 vop_read_ap(struct vop_read_args *ap)
1717 {
1718 int error;
1719
1720 DO_OPS(ap->a_head.a_ops, error, ap, vop_read);
1721 return(error);
1722 }
1723
1724 int
1725 vop_write_ap(struct vop_write_args *ap)
1726 {
1727 int error;
1728
1729 DO_OPS(ap->a_head.a_ops, error, ap, vop_write);
1730 return(error);
1731 }
1732
1733 int
1734 vop_ioctl_ap(struct vop_ioctl_args *ap)
1735 {
1736 int error;
1737
1738 DO_OPS(ap->a_head.a_ops, error, ap, vop_ioctl);
1739 return(error);
1740 }
1741
1742 int
1743 vop_poll_ap(struct vop_poll_args *ap)
1744 {
1745 int error;
1746
1747 DO_OPS(ap->a_head.a_ops, error, ap, vop_poll);
1748 return(error);
1749 }
1750
1751 int
1752 vop_kqfilter_ap(struct vop_kqfilter_args *ap)
1753 {
1754 int error;
1755
1756 DO_OPS(ap->a_head.a_ops, error, ap, vop_kqfilter);
1757 return(error);
1758 }
1759
1760 int
1761 vop_mmap_ap(struct vop_mmap_args *ap)
1762 {
1763 int error;
1764
1765 DO_OPS(ap->a_head.a_ops, error, ap, vop_mmap);
1766 return(error);
1767 }
1768
1769 int
1770 vop_fsync_ap(struct vop_fsync_args *ap)
1771 {
1772 int error;
1773
1774 DO_OPS(ap->a_head.a_ops, error, ap, vop_fsync);
1775 return(error);
1776 }
1777
1778 int
1779 vop_readdir_ap(struct vop_readdir_args *ap)
1780 {
1781 int error;
1782
1783 DO_OPS(ap->a_head.a_ops, error, ap, vop_readdir);
1784 return(error);
1785 }
1786
1787 int
1788 vop_readlink_ap(struct vop_readlink_args *ap)
1789 {
1790 int error;
1791
1792 DO_OPS(ap->a_head.a_ops, error, ap, vop_readlink);
1793 return(error);
1794 }
1795
1796 int
1797 vop_inactive_ap(struct vop_inactive_args *ap)
1798 {
1799 int error;
1800
1801 DO_OPS(ap->a_head.a_ops, error, ap, vop_inactive);
1802 return(error);
1803 }
1804
1805 int
1806 vop_reclaim_ap(struct vop_reclaim_args *ap)
1807 {
1808 int error;
1809
1810 DO_OPS(ap->a_head.a_ops, error, ap, vop_reclaim);
1811 return(error);
1812 }
1813
1814 int
1815 vop_bmap_ap(struct vop_bmap_args *ap)
1816 {
1817 int error;
1818
1819 DO_OPS(ap->a_head.a_ops, error, ap, vop_bmap);
1820 return(error);
1821 }
1822
1823 int
1824 vop_strategy_ap(struct vop_strategy_args *ap)
1825 {
1826 int error;
1827
1828 DO_OPS(ap->a_head.a_ops, error, ap, vop_strategy);
1829 return(error);
1830 }
1831
1832 int
1833 vop_print_ap(struct vop_print_args *ap)
1834 {
1835 int error;
1836
1837 DO_OPS(ap->a_head.a_ops, error, ap, vop_print);
1838 return(error);
1839 }
1840
1841 int
1842 vop_pathconf_ap(struct vop_pathconf_args *ap)
1843 {
1844 int error;
1845
1846 DO_OPS(ap->a_head.a_ops, error, ap, vop_pathconf);
1847 return(error);
1848 }
1849
1850 int
1851 vop_advlock_ap(struct vop_advlock_args *ap)
1852 {
1853 int error;
1854
1855 DO_OPS(ap->a_head.a_ops, error, ap, vop_advlock);
1856 return(error);
1857 }
1858
1859 int
1860 vop_balloc_ap(struct vop_balloc_args *ap)
1861 {
1862 int error;
1863
1864 DO_OPS(ap->a_head.a_ops, error, ap, vop_balloc);
1865 return(error);
1866 }
1867
1868 int
1869 vop_reallocblks_ap(struct vop_reallocblks_args *ap)
1870 {
1871 int error;
1872
1873 DO_OPS(ap->a_head.a_ops, error, ap, vop_reallocblks);
1874 return(error);
1875 }
1876
1877 int
1878 vop_getpages_ap(struct vop_getpages_args *ap)
1879 {
1880 int error;
1881
1882 DO_OPS(ap->a_head.a_ops, error, ap, vop_getpages);
1883 return(error);
1884 }
1885
1886 int
1887 vop_putpages_ap(struct vop_putpages_args *ap)
1888 {
1889 int error;
1890
1891 DO_OPS(ap->a_head.a_ops, error, ap, vop_putpages);
1892 return(error);
1893 }
1894
1895 int
1896 vop_freeblks_ap(struct vop_freeblks_args *ap)
1897 {
1898 int error;
1899
1900 DO_OPS(ap->a_head.a_ops, error, ap, vop_freeblks);
1901 return(error);
1902 }
1903
1904 int
1905 vop_getacl_ap(struct vop_getacl_args *ap)
1906 {
1907 int error;
1908
1909 DO_OPS(ap->a_head.a_ops, error, ap, vop_getacl);
1910 return(error);
1911 }
1912
1913 int
1914 vop_setacl_ap(struct vop_setacl_args *ap)
1915 {
1916 int error;
1917
1918 DO_OPS(ap->a_head.a_ops, error, ap, vop_setacl);
1919 return(error);
1920 }
1921
1922 int
1923 vop_aclcheck_ap(struct vop_aclcheck_args *ap)
1924 {
1925 int error;
1926
1927 DO_OPS(ap->a_head.a_ops, error, ap, vop_aclcheck);
1928 return(error);
1929 }
1930
1931 int
1932 vop_getextattr_ap(struct vop_getextattr_args *ap)
1933 {
1934 int error;
1935
1936 DO_OPS(ap->a_head.a_ops, error, ap, vop_getextattr);
1937 return(error);
1938 }
1939
1940 int
1941 vop_setextattr_ap(struct vop_setextattr_args *ap)
1942 {
1943 int error;
1944
1945 DO_OPS(ap->a_head.a_ops, error, ap, vop_setextattr);
1946 return(error);
1947 }
1948
1949 int
1950 vop_mountctl_ap(struct vop_mountctl_args *ap)
1951 {
1952 int error;
1953
1954 DO_OPS(ap->a_head.a_ops, error, ap, vop_mountctl);
1955 return(error);
1956 }
1957
1958 int
1959 vop_markatime_ap(struct vop_markatime_args *ap)
1960 {
1961 int error;
1962
1963 DO_OPS(ap->a_head.a_ops, error, ap, vop_markatime);
1964 return(error);
1965 }
1966
1967 int
1968 vop_nresolve_ap(struct vop_nresolve_args *ap)
1969 {
1970 int error;
1971
1972 DO_OPS(ap->a_head.a_ops, error, ap, vop_nresolve);
1973 return(error);
1974 }
1975
1976 int
1977 vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args *ap)
1978 {
1979 int error;
1980
1981 DO_OPS(ap->a_head.a_ops, error, ap, vop_nlookupdotdot);
1982 return(error);
1983 }
1984
1985 int
1986 vop_ncreate_ap(struct vop_ncreate_args *ap)
1987 {
1988 int error;
1989
1990 DO_OPS(ap->a_head.a_ops, error, ap, vop_ncreate);
1991 return(error);
1992 }
1993
1994 int
1995 vop_nmkdir_ap(struct vop_nmkdir_args *ap)
1996 {
1997 int error;
1998
1999 DO_OPS(ap->a_head.a_ops, error, ap, vop_nmkdir);
2000 return(error);
2001 }
2002
2003 int
2004 vop_nmknod_ap(struct vop_nmknod_args *ap)
2005 {
2006 int error;
2007
2008 DO_OPS(ap->a_head.a_ops, error, ap, vop_nmknod);
2009 return(error);
2010 }
2011
2012 int
2013 vop_nlink_ap(struct vop_nlink_args *ap)
2014 {
2015 int error;
2016
2017 DO_OPS(ap->a_head.a_ops, error, ap, vop_nlink);
2018 return(error);
2019 }
2020
2021 int
2022 vop_nsymlink_ap(struct vop_nsymlink_args *ap)
2023 {
2024 int error;
2025
2026 DO_OPS(ap->a_head.a_ops, error, ap, vop_nsymlink);
2027 return(error);
2028 }
2029
2030 int
2031 vop_nwhiteout_ap(struct vop_nwhiteout_args *ap)
2032 {
2033 int error;
2034
2035 DO_OPS(ap->a_head.a_ops, error, ap, vop_nwhiteout);
2036 return(error);
2037 }
2038
2039 int
2040 vop_nremove_ap(struct vop_nremove_args *ap)
2041 {
2042 int error;
2043
2044 DO_OPS(ap->a_head.a_ops, error, ap, vop_nremove);
2045 return(error);
2046 }
2047
2048 int
2049 vop_nrmdir_ap(struct vop_nrmdir_args *ap)
2050 {
2051 int error;
2052
2053 DO_OPS(ap->a_head.a_ops, error, ap, vop_nrmdir);
2054 return(error);
2055 }
2056
2057 int
2058 vop_nrename_ap(struct vop_nrename_args *ap)
2059 {
2060 int error;
2061
2062 DO_OPS(ap->a_head.a_ops, error, ap, vop_nrename);
2063 return(error);
2064 }
2065
Cache object: 5716e337333958dd09737001d142d4a0
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