Add required range checks prior to kmalloc()ing socket option buffer space.
[dragonfly.git] / sys / sys / vfsops.h
blob1e5bd3b0024bf4839d97e9f39a3f00c7e1bf0c19
1 /*
2 * Copyright (c) 2004 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:
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.
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.
34 * $DragonFly: src/sys/sys/vfsops.h,v 1.32 2008/06/19 23:27:36 dillon Exp $
38 * The vop_ops structure vectors all access to a filesystem. It contains a
39 * fixed set of vectors.
41 * In DragonFly the ultimate goal is to thread the VFS, which means that
42 * the dispatch functions will eventually be called from the context of
43 * a management thread rather then directly called by a process. This
44 * requires us to divorce direct process dependancies (in particular ioctl
45 * and UIO's). In addition, it is our intention to implement kernel
46 * level cache management and coherency in the vop_*() interfacing
47 * layer.
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_
67 #ifndef _SYS_ACL_H_
68 #include <sys/acl.h>
69 #endif
70 #ifndef _SYS_BUF_H_
71 #include <sys/buf.h> /* buf_cmd_t */
72 #endif
74 struct syslink_desc;
75 struct vnode;
76 struct thread;
77 struct nchandle;
78 struct componentname;
79 struct vattr;
80 struct ucred;
81 struct uio;
82 struct file;
83 struct knote;
84 struct vm_object;
85 struct vm_page;
86 struct vfscache;
88 struct vop_generic_args {
89 struct syslink_desc *a_desc; /* command descriptor for the call */
90 struct vop_ops *a_ops; /* operations vector for the call */
91 int a_reserved[4];
94 struct vop_old_lookup_args {
95 struct vop_generic_args a_head;
96 struct vnode *a_dvp;
97 struct vnode **a_vpp;
98 struct componentname *a_cnp;
101 struct vop_old_create_args {
102 struct vop_generic_args a_head;
103 struct vnode *a_dvp;
104 struct vnode **a_vpp;
105 struct componentname *a_cnp;
106 struct vattr *a_vap;
109 struct vop_old_whiteout_args {
110 struct vop_generic_args a_head;
111 struct vnode *a_dvp;
112 struct componentname *a_cnp;
113 int a_flags;
116 struct vop_old_mknod_args {
117 struct vop_generic_args a_head;
118 struct vnode *a_dvp;
119 struct vnode **a_vpp;
120 struct componentname *a_cnp;
121 struct vattr *a_vap;
124 struct vop_open_args {
125 struct vop_generic_args a_head;
126 struct vnode *a_vp;
127 int a_mode;
128 struct ucred *a_cred;
129 struct file *a_fp; /* optional fp for fileops override */
132 struct vop_close_args {
133 struct vop_generic_args a_head;
134 struct vnode *a_vp;
135 int a_fflag;
138 struct vop_access_args {
139 struct vop_generic_args a_head;
140 struct vnode *a_vp;
141 int a_mode;
142 struct ucred *a_cred;
145 struct vop_getattr_args {
146 struct vop_generic_args a_head;
147 struct vnode *a_vp;
148 struct vattr *a_vap;
151 struct vop_setattr_args {
152 struct vop_generic_args a_head;
153 struct vnode *a_vp;
154 struct vattr *a_vap;
155 struct ucred *a_cred;
158 struct vop_read_args {
159 struct vop_generic_args a_head;
160 struct vnode *a_vp;
161 struct uio *a_uio;
162 int a_ioflag;
163 struct ucred *a_cred;
166 struct vop_write_args {
167 struct vop_generic_args a_head;
168 struct vnode *a_vp;
169 struct uio *a_uio;
170 int a_ioflag;
171 struct ucred *a_cred;
174 struct vop_ioctl_args {
175 struct vop_generic_args a_head;
176 struct vnode *a_vp;
177 u_long a_command;
178 caddr_t a_data;
179 int a_fflag;
180 struct ucred *a_cred;
183 struct vop_poll_args {
184 struct vop_generic_args a_head;
185 struct vnode *a_vp;
186 int a_events;
187 struct ucred *a_cred;
190 struct vop_kqfilter_args {
191 struct vop_generic_args a_head;
192 struct vnode *a_vp;
193 struct knote *a_kn;
196 struct vop_revoke_args {
197 struct vop_generic_args a_head;
198 struct vnode *a_vp;
199 int a_flags;
202 struct vop_mmap_args {
203 struct vop_generic_args a_head;
204 struct vnode *a_vp;
205 int a_fflags;
206 struct ucred *a_cred;
209 struct vop_fsync_args {
210 struct vop_generic_args a_head;
211 struct vnode *a_vp;
212 int a_waitfor;
215 struct vop_old_remove_args {
216 struct vop_generic_args a_head;
217 struct vnode *a_dvp;
218 struct vnode *a_vp;
219 struct componentname *a_cnp;
222 struct vop_old_link_args {
223 struct vop_generic_args a_head;
224 struct vnode *a_tdvp;
225 struct vnode *a_vp;
226 struct componentname *a_cnp;
229 struct vop_old_rename_args {
230 struct vop_generic_args a_head;
231 struct vnode *a_fdvp;
232 struct vnode *a_fvp;
233 struct componentname *a_fcnp;
234 struct vnode *a_tdvp;
235 struct vnode *a_tvp;
236 struct componentname *a_tcnp;
239 struct vop_old_mkdir_args {
240 struct vop_generic_args a_head;
241 struct vnode *a_dvp;
242 struct vnode **a_vpp;
243 struct componentname *a_cnp;
244 struct vattr *a_vap;
247 struct vop_old_rmdir_args {
248 struct vop_generic_args a_head;
249 struct vnode *a_dvp;
250 struct vnode *a_vp;
251 struct componentname *a_cnp;
254 struct vop_old_symlink_args {
255 struct vop_generic_args a_head;
256 struct vnode *a_dvp;
257 struct vnode **a_vpp;
258 struct componentname *a_cnp;
259 struct vattr *a_vap;
260 char *a_target;
263 struct vop_readdir_args {
264 struct vop_generic_args a_head;
265 struct vnode *a_vp;
266 struct uio *a_uio;
267 struct ucred *a_cred;
268 int *a_eofflag;
269 int *a_ncookies;
270 off_t **a_cookies;
273 struct vop_readlink_args {
274 struct vop_generic_args a_head;
275 struct vnode *a_vp;
276 struct uio *a_uio;
277 struct ucred *a_cred;
280 struct vop_inactive_args {
281 struct vop_generic_args a_head;
282 struct vnode *a_vp;
285 struct vop_reclaim_args {
286 struct vop_generic_args a_head;
287 struct vnode *a_vp;
290 struct vop_bmap_args {
291 struct vop_generic_args a_head;
292 struct vnode *a_vp;
293 off_t a_loffset;
294 off_t *a_doffsetp;
295 int *a_runp;
296 int *a_runb;
297 buf_cmd_t a_cmd; /* BUF_CMD_READ, BUF_CMD_WRITE, etc */
300 struct vop_strategy_args {
301 struct vop_generic_args a_head;
302 struct vnode *a_vp;
303 struct bio *a_bio;
306 struct vop_print_args {
307 struct vop_generic_args a_head;
308 struct vnode *a_vp;
311 struct vop_pathconf_args {
312 struct vop_generic_args a_head;
313 struct vnode *a_vp;
314 int a_name;
315 register_t *a_retval;
318 struct vop_advlock_args {
319 struct vop_generic_args a_head;
320 struct vnode *a_vp;
321 caddr_t a_id;
322 int a_op;
323 struct flock *a_fl;
324 int a_flags;
327 struct vop_balloc_args {
328 struct vop_generic_args a_head;
329 struct vnode *a_vp;
330 off_t a_startoffset;
331 int a_size;
332 struct ucred *a_cred;
333 int a_flags;
334 struct buf **a_bpp;
337 struct vop_reallocblks_args {
338 struct vop_generic_args a_head;
339 struct vnode *a_vp;
340 struct cluster_save *a_buflist;
343 struct vop_getpages_args {
344 struct vop_generic_args a_head;
345 struct vnode *a_vp;
346 struct vm_page **a_m;
347 int a_count;
348 int a_reqpage;
349 vm_ooffset_t a_offset;
352 struct vop_putpages_args {
353 struct vop_generic_args a_head;
354 struct vnode *a_vp;
355 struct vm_page **a_m;
356 int a_count;
357 int a_sync;
358 int *a_rtvals;
359 vm_ooffset_t a_offset;
362 struct vop_freeblks_args {
363 struct vop_generic_args a_head;
364 struct vnode *a_vp;
365 off_t a_offset;
366 int a_length;
369 struct vop_getacl_args {
370 struct vop_generic_args a_head;
371 struct vnode *a_vp;
372 acl_type_t a_type;
373 struct acl *a_aclp;
374 struct ucred *a_cred;
377 struct vop_setacl_args {
378 struct vop_generic_args a_head;
379 struct vnode *a_vp;
380 acl_type_t a_type;
381 struct acl *a_aclp;
382 struct ucred *a_cred;
385 struct vop_aclcheck_args {
386 struct vop_generic_args a_head;
387 struct vnode *a_vp;
388 acl_type_t a_type;
389 struct acl *a_aclp;
390 struct ucred *a_cred;
393 struct vop_getextattr_args {
394 struct vop_generic_args a_head;
395 struct vnode *a_vp;
396 char *a_name;
397 struct uio *a_uio;
398 struct ucred *a_cred;
401 struct vop_setextattr_args {
402 struct vop_generic_args a_head;
403 struct vnode *a_vp;
404 char *a_name;
405 struct uio *a_uio;
406 struct ucred *a_cred;
409 struct vop_mountctl_args {
410 struct vop_generic_args a_head;
411 int a_op;
412 struct file *a_fp;
413 const void *a_ctl;
414 int a_ctllen;
415 void *a_buf;
416 int a_buflen;
417 int *a_res;
421 * NEW API
425 * Warning: a_dvp is only held, not ref'd. The target must still vget()
426 * it.
428 struct vop_nresolve_args {
429 struct vop_generic_args a_head;
430 struct nchandle *a_nch;
431 struct vnode *a_dvp;
432 struct ucred *a_cred;
435 struct vop_nlookupdotdot_args {
436 struct vop_generic_args a_head;
437 struct vnode *a_dvp;
438 struct vnode **a_vpp;
439 struct ucred *a_cred;
440 char **a_fakename;
444 * Warning: a_dvp is only held, not ref'd. The target must still vget()
445 * it.
447 struct vop_ncreate_args {
448 struct vop_generic_args a_head;
449 struct nchandle *a_nch; /* locked namespace */
450 struct vnode *a_dvp; /* held directory vnode */
451 struct vnode **a_vpp; /* returned refd & locked */
452 struct ucred *a_cred;
453 struct vattr *a_vap;
457 * Warning: a_dvp is only held, not ref'd. The target must still vget()
458 * it.
460 struct vop_nmkdir_args {
461 struct vop_generic_args a_head;
462 struct nchandle *a_nch; /* locked namespace */
463 struct vnode *a_dvp;
464 struct vnode **a_vpp; /* returned refd & locked */
465 struct ucred *a_cred;
466 struct vattr *a_vap;
470 * Warning: a_dvp is only held, not ref'd. The target must still vget()
471 * it.
473 struct vop_nmknod_args {
474 struct vop_generic_args a_head;
475 struct nchandle *a_nch;
476 struct vnode *a_dvp;
477 struct vnode **a_vpp;
478 struct ucred *a_cred;
479 struct vattr *a_vap;
483 * Warning: a_dvp is only held, not ref'd. The target must still vget()
484 * it.
486 struct vop_nlink_args {
487 struct vop_generic_args a_head;
488 struct nchandle *a_nch;
489 struct vnode *a_dvp;
490 struct vnode *a_vp;
491 struct ucred *a_cred;
495 * Warning: a_dvp is only held, not ref'd. The target must still vget()
496 * it.
498 struct vop_nsymlink_args {
499 struct vop_generic_args a_head;
500 struct nchandle *a_nch;
501 struct vnode *a_dvp;
502 struct vnode **a_vpp;
503 struct ucred *a_cred;
504 struct vattr *a_vap;
505 char *a_target;
509 * Warning: a_dvp is only held, not ref'd. The target must still vget()
510 * it.
512 struct vop_nwhiteout_args {
513 struct vop_generic_args a_head;
514 struct nchandle *a_nch;
515 struct vnode *a_dvp;
516 struct ucred *a_cred;
517 int a_flags;
521 * Warning: a_dvp is only held, not ref'd. The target must still vget()
522 * it.
524 struct vop_nremove_args {
525 struct vop_generic_args a_head;
526 struct nchandle *a_nch; /* locked namespace */
527 struct vnode *a_dvp;
528 struct ucred *a_cred;
532 * Warning: a_dvp is only held, not ref'd. The target must still vget()
533 * it.
535 struct vop_nrmdir_args {
536 struct vop_generic_args a_head;
537 struct nchandle *a_nch; /* locked namespace */
538 struct vnode *a_dvp;
539 struct ucred *a_cred;
543 * Warning: a_fdvp and a_tdvp are only held, not ref'd. The target must
544 * still vget() it.
546 struct vop_nrename_args {
547 struct vop_generic_args a_head;
548 struct nchandle *a_fnch; /* locked namespace / from */
549 struct nchandle *a_tnch; /* locked namespace / to */
550 struct vnode *a_fdvp;
551 struct vnode *a_tdvp;
552 struct ucred *a_cred;
556 * This structure is the post-compiled VOP operations vector. vop_ops are
557 * typically per-mount entities. The first section is used by our vop_*()
558 * function wrappers to implement hooks for per-mount management functions
559 * such as journaling and cache coherency protocols. The second section is
560 * the function dispatch for the VFSs. The functions are supposed to run
561 * in the context of the VFS's thread (if it has one) and should not be
562 * directly called from random kernel code. Note that VOCALL()s are direct
563 * calls used for chaining vop_ops structures from a VFS context.
565 struct vop_ops {
566 struct {
567 struct mount *vv_mount;
568 } head;
570 #define vop_ops_first_field vop_default
571 int (*vop_default)(struct vop_generic_args *);
572 int (*vop_unused11)(void *);
573 int (*vop_old_lookup)(struct vop_old_lookup_args *);
574 int (*vop_unused03)(void *);
575 int (*vop_old_create)(struct vop_old_create_args *);
576 int (*vop_old_whiteout)(struct vop_old_whiteout_args *);
577 int (*vop_old_mknod)(struct vop_old_mknod_args *);
578 int (*vop_open)(struct vop_open_args *);
579 int (*vop_close)(struct vop_close_args *);
580 int (*vop_access)(struct vop_access_args *);
581 int (*vop_getattr)(struct vop_getattr_args *);
582 int (*vop_setattr)(struct vop_setattr_args *);
583 int (*vop_read)(struct vop_read_args *);
584 int (*vop_write)(struct vop_write_args *);
585 int (*vop_unused04)(void *);
586 int (*vop_ioctl)(struct vop_ioctl_args *);
587 int (*vop_poll)(struct vop_poll_args *);
588 int (*vop_kqfilter)(struct vop_kqfilter_args *);
589 int (*vop_revoke)(struct vop_revoke_args *);
590 int (*vop_mmap)(struct vop_mmap_args *);
591 int (*vop_fsync)(struct vop_fsync_args *);
592 int (*vop_old_remove)(struct vop_old_remove_args *);
593 int (*vop_old_link)(struct vop_old_link_args *);
594 int (*vop_old_rename)(struct vop_old_rename_args *);
595 int (*vop_old_mkdir)(struct vop_old_mkdir_args *);
596 int (*vop_old_rmdir)(struct vop_old_rmdir_args *);
597 int (*vop_old_symlink)(struct vop_old_symlink_args *);
598 int (*vop_readdir)(struct vop_readdir_args *);
599 int (*vop_readlink)(struct vop_readlink_args *);
600 int (*vop_inactive)(struct vop_inactive_args *);
601 int (*vop_reclaim)(struct vop_reclaim_args *);
602 int (*vop_unused09)(void *);
603 int (*vop_unused10)(void *);
604 int (*vop_bmap)(struct vop_bmap_args *);
605 int (*vop_strategy)(struct vop_strategy_args *);
606 int (*vop_print)(struct vop_print_args *);
607 int (*vop_pathconf)(struct vop_pathconf_args *);
608 int (*vop_advlock)(struct vop_advlock_args *);
609 int (*vop_balloc)(struct vop_balloc_args *);
610 int (*vop_reallocblks)(struct vop_reallocblks_args *);
611 int (*vop_getpages)(struct vop_getpages_args *);
612 int (*vop_putpages)(struct vop_putpages_args *);
613 int (*vop_freeblks)(struct vop_freeblks_args *);
614 int (*vop_unused05)(void *);
615 int (*vop_getacl)(struct vop_getacl_args *);
616 int (*vop_setacl)(struct vop_setacl_args *);
617 int (*vop_aclcheck)(struct vop_aclcheck_args *);
618 int (*vop_getextattr)(struct vop_getextattr_args *);
619 int (*vop_setextattr)(struct vop_setextattr_args *);
620 int (*vop_unused06)(void *);
621 int (*vop_unused07)(void *);
622 int (*vop_unused08)(void *);
623 int (*vop_mountctl)(struct vop_mountctl_args *);
625 int (*vop_nresolve)(struct vop_nresolve_args *);
626 int (*vop_nlookupdotdot)(struct vop_nlookupdotdot_args *);
627 int (*vop_ncreate)(struct vop_ncreate_args *);
628 int (*vop_nmkdir)(struct vop_nmkdir_args *);
629 int (*vop_nmknod)(struct vop_nmknod_args *);
630 int (*vop_nlink)(struct vop_nlink_args *);
631 int (*vop_nsymlink)(struct vop_nsymlink_args *);
632 int (*vop_nwhiteout)(struct vop_nwhiteout_args *);
633 int (*vop_nremove)(struct vop_nremove_args *);
634 int (*vop_nrmdir)(struct vop_nrmdir_args *);
635 int (*vop_nrename)(struct vop_nrename_args *);
636 #define vop_ops_last_field vop_nrename
640 * vop_mountctl() operations
642 #define VFSSET_DETACH 0
643 #define VFSSET_ATTACH 1
646 * Kernel VOP arguments union, suitable for malloc / embedding in other
647 * structures. The vop_args_union can hold any VOP call argument structure.
648 * Note that vu_head is broken out.
650 union vop_args_union {
651 struct vop_generic_args vu_head;
652 struct vop_generic_args vu_default;
653 struct vop_old_lookup_args vu_lookup;
654 struct vop_old_create_args vu_create;
655 struct vop_old_whiteout_args vu_whiteout;
656 struct vop_old_mknod_args vu_mknod;
657 struct vop_open_args vu_open;
658 struct vop_close_args vu_close;
659 struct vop_access_args vu_access;
660 struct vop_getattr_args vu_getattr;
661 struct vop_setattr_args vu_setattr;
662 struct vop_read_args vu_read;
663 struct vop_write_args vu_write;
664 struct vop_ioctl_args vu_ioctl;
665 struct vop_poll_args vu_poll;
666 struct vop_kqfilter_args vu_kqfilter;
667 struct vop_revoke_args vu_revoke;
668 struct vop_mmap_args vu_mmap;
669 struct vop_fsync_args vu_fsync;
670 struct vop_old_remove_args vu_remove;
671 struct vop_old_link_args vu_link;
672 struct vop_old_rename_args vu_rename;
673 struct vop_old_mkdir_args vu_mkdir;
674 struct vop_old_rmdir_args vu_rmdir;
675 struct vop_old_symlink_args vu_symlink;
676 struct vop_readdir_args vu_readdir;
677 struct vop_readlink_args vu_readlink;
678 struct vop_inactive_args vu_inactive;
679 struct vop_reclaim_args vu_reclaim;
680 struct vop_bmap_args vu_bmap;
681 struct vop_strategy_args vu_strategy;
682 struct vop_print_args vu_print;
683 struct vop_pathconf_args vu_pathconf;
684 struct vop_advlock_args vu_advlock;
685 struct vop_balloc_args vu_balloc;
686 struct vop_reallocblks_args vu_reallocblks;
687 struct vop_getpages_args vu_getpages;
688 struct vop_putpages_args vu_putpages;
689 struct vop_freeblks_args vu_freeblks;
690 struct vop_getacl_args vu_getacl;
691 struct vop_setacl_args vu_setacl;
692 struct vop_aclcheck_args vu_aclcheck;
693 struct vop_getextattr_args vu_getextattr;
694 struct vop_setextattr_args vu_setextattr;
695 struct vop_mountctl_args vu_mountctl;
697 struct vop_nresolve_args vu_nresolve;
698 struct vop_nlookupdotdot_args vu_nlookupdotdot;
699 struct vop_ncreate_args vu_ncreate;
700 struct vop_nmkdir_args vu_nmkdir;
701 struct vop_nmknod_args vu_nmknod;
702 struct vop_nlink_args vu_nlink;
703 struct vop_nsymlink_args vu_nsymlink;
704 struct vop_nwhiteout_args vu_nwhiteout;
705 struct vop_nremove_args vu_nremove;
706 struct vop_nrmdir_args vu_nrmdir;
707 struct vop_nrename_args vu_nrename;
710 #ifdef _KERNEL
713 * Kernel VOP call wrappers. These wrappers are responsible for wrapping
714 * the arguments in the appropriate VOP arguments structure, sending the
715 * message, and waiting for a reply. All kernel and VFS code should generally
716 * call these wrappers rather then attempt to call the operations vector
717 * routine directly in order to allow DragonFly to properly wrap the operation
718 * in a message and dispatch it to the correct thread.
720 int vop_old_lookup(struct vop_ops *ops, struct vnode *dvp,
721 struct vnode **vpp, struct componentname *cnp);
722 int vop_old_create(struct vop_ops *ops, struct vnode *dvp,
723 struct vnode **vpp, struct componentname *cnp,
724 struct vattr *vap);
725 int vop_old_whiteout(struct vop_ops *ops, struct vnode *dvp,
726 struct componentname *cnp, int flags);
727 int vop_old_mknod(struct vop_ops *ops, struct vnode *dvp,
728 struct vnode **vpp, struct componentname *cnp,
729 struct vattr *vap);
730 int vop_open(struct vop_ops *ops, struct vnode *vp, int mode,
731 struct ucred *cred, struct file *file);
732 int vop_close(struct vop_ops *ops, struct vnode *vp, int fflag);
733 int vop_access(struct vop_ops *ops, struct vnode *vp, int mode,
734 struct ucred *cred);
735 int vop_getattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap);
736 int vop_setattr(struct vop_ops *ops, struct vnode *vp, struct vattr *vap,
737 struct ucred *cred);
738 int vop_read(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
739 int ioflag, struct ucred *cred);
740 int vop_write(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
741 int ioflag, struct ucred *cred);
742 int vop_ioctl(struct vop_ops *ops, struct vnode *vp, u_long command,
743 caddr_t data, int fflag, struct ucred *cred);
744 int vop_poll(struct vop_ops *ops, struct vnode *vp, int events,
745 struct ucred *cred);
746 int vop_kqfilter(struct vop_ops *ops, struct vnode *vp, struct knote *kn);
747 int vop_revoke(struct vop_ops *ops, struct vnode *vp, int flags);
748 int vop_mmap(struct vop_ops *ops, struct vnode *vp, int fflags,
749 struct ucred *cred);
750 int vop_fsync(struct vop_ops *ops, struct vnode *vp, int waitfor);
751 int vop_old_remove(struct vop_ops *ops, struct vnode *dvp,
752 struct vnode *vp, struct componentname *cnp);
753 int vop_old_link(struct vop_ops *ops, struct vnode *tdvp,
754 struct vnode *vp, struct componentname *cnp);
755 int vop_old_rename(struct vop_ops *ops, struct vnode *fdvp,
756 struct vnode *fvp, struct componentname *fcnp,
757 struct vnode *tdvp, struct vnode *tvp,
758 struct componentname *tcnp);
759 int vop_old_mkdir(struct vop_ops *ops, struct vnode *dvp,
760 struct vnode **vpp, struct componentname *cnp,
761 struct vattr *vap);
762 int vop_old_rmdir(struct vop_ops *ops, struct vnode *dvp,
763 struct vnode *vp, struct componentname *cnp);
764 int vop_old_symlink(struct vop_ops *ops, struct vnode *dvp,
765 struct vnode **vpp, struct componentname *cnp,
766 struct vattr *vap, char *target);
767 int vop_readdir(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
768 struct ucred *cred, int *eofflag,
769 int *ncookies, off_t **cookies);
770 int vop_readlink(struct vop_ops *ops, struct vnode *vp, struct uio *uio,
771 struct ucred *cred);
772 int vop_inactive(struct vop_ops *ops, struct vnode *vp);
773 int vop_reclaim(struct vop_ops *ops, struct vnode *vp);
774 int vop_bmap(struct vop_ops *ops, struct vnode *vp, off_t loffset,
775 off_t *doffsetp, int *runp, int *runb, buf_cmd_t cmd);
776 int vop_strategy(struct vop_ops *ops, struct vnode *vp, struct bio *bio);
777 int vop_print(struct vop_ops *ops, struct vnode *vp);
778 int vop_pathconf(struct vop_ops *ops, struct vnode *vp, int name,
779 register_t *retval);
780 int vop_advlock(struct vop_ops *ops, struct vnode *vp, caddr_t id, int op,
781 struct flock *fl, int flags);
782 int vop_balloc(struct vop_ops *ops, struct vnode *vp, off_t startoffset,
783 int size, struct ucred *cred, int flags,
784 struct buf **bpp);
785 int vop_reallocblks(struct vop_ops *ops, struct vnode *vp,
786 struct cluster_save *buflist);
787 int vop_getpages(struct vop_ops *ops, struct vnode *vp, struct vm_page **m,
788 int count, int reqpage, vm_ooffset_t offset);
789 int vop_putpages(struct vop_ops *ops, struct vnode *vp, struct vm_page **m,
790 int count, int sync, int *rtvals, vm_ooffset_t offset);
791 int vop_freeblks(struct vop_ops *ops, struct vnode *vp,
792 off_t offset, int length);
793 int vop_getacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
794 struct acl *aclp, struct ucred *cred);
795 int vop_setacl(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
796 struct acl *aclp, struct ucred *cred);
797 int vop_aclcheck(struct vop_ops *ops, struct vnode *vp, acl_type_t type,
798 struct acl *aclp, struct ucred *cred);
799 int vop_getextattr(struct vop_ops *ops, struct vnode *vp, char *name,
800 struct uio *uio, struct ucred *cred);
801 int vop_setextattr(struct vop_ops *ops, struct vnode *vp, char *name,
802 struct uio *uio, struct ucred *cred);
803 int vop_mountctl(struct vop_ops *ops, int op, struct file *fp,
804 const void *ctl, int ctllen, void *buf, int buflen, int *res);
805 int vop_nresolve(struct vop_ops *ops, struct nchandle *nch,
806 struct vnode *dvp, struct ucred *cred);
807 int vop_nlookupdotdot(struct vop_ops *ops, struct vnode *dvp,
808 struct vnode **vpp, struct ucred *cred, char **fakename);
809 int vop_ncreate(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
810 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
811 int vop_nmkdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
812 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
813 int vop_nmknod(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
814 struct vnode **vpp, struct ucred *cred, struct vattr *vap);
815 int vop_nlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
816 struct vnode *vp, struct ucred *cred);
817 int vop_nsymlink(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
818 struct vnode **vpp, struct ucred *cred,
819 struct vattr *vap, char *target);
820 int vop_nwhiteout(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
821 struct ucred *cred, int flags);
822 int vop_nremove(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
823 struct ucred *cred);
824 int vop_nrmdir(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
825 struct ucred *cred);
826 int vop_nrename(struct vop_ops *ops,
827 struct nchandle *fnch, struct nchandle *tnch,
828 struct vnode *fdvp, struct vnode *tdvp,
829 struct ucred *cred);
832 * Kernel VOP forwarding wrappers. These are called when a VFS such as
833 * nullfs or unionfs needs to push down into another VFS, changing the
834 * a_ops pointer and consequentially necessitating additional
835 * cache management.
837 * Note that this is different from vop_ops chaining within the same
838 * filesystem. When a filesystem chains a vop_ops it just uses VOCALLs.
840 int vop_vnoperate_ap(struct vop_generic_args *ap);
841 int vop_cache_operate_ap(struct vop_generic_args *ap);
842 int vop_journal_operate_ap(struct vop_generic_args *ap);
843 int vop_old_lookup_ap(struct vop_old_lookup_args *ap);
844 int vop_old_create_ap(struct vop_old_create_args *ap);
845 int vop_old_whiteout_ap(struct vop_old_whiteout_args *ap);
846 int vop_old_mknod_ap(struct vop_old_mknod_args *ap);
847 int vop_open_ap(struct vop_open_args *ap);
848 int vop_close_ap(struct vop_close_args *ap);
849 int vop_access_ap(struct vop_access_args *ap);
850 int vop_getattr_ap(struct vop_getattr_args *ap);
851 int vop_setattr_ap(struct vop_setattr_args *ap);
852 int vop_read_ap(struct vop_read_args *ap);
853 int vop_write_ap(struct vop_write_args *ap);
854 int vop_ioctl_ap(struct vop_ioctl_args *ap);
855 int vop_poll_ap(struct vop_poll_args *ap);
856 int vop_kqfilter_ap(struct vop_kqfilter_args *ap);
857 int vop_revoke_ap(struct vop_revoke_args *ap);
858 int vop_mmap_ap(struct vop_mmap_args *ap);
859 int vop_fsync_ap(struct vop_fsync_args *ap);
860 int vop_old_remove_ap(struct vop_old_remove_args *ap);
861 int vop_old_link_ap(struct vop_old_link_args *ap);
862 int vop_old_rename_ap(struct vop_old_rename_args *ap);
863 int vop_old_mkdir_ap(struct vop_old_mkdir_args *ap);
864 int vop_old_rmdir_ap(struct vop_old_rmdir_args *ap);
865 int vop_old_symlink_ap(struct vop_old_symlink_args *ap);
866 int vop_readdir_ap(struct vop_readdir_args *ap);
867 int vop_readlink_ap(struct vop_readlink_args *ap);
868 int vop_inactive_ap(struct vop_inactive_args *ap);
869 int vop_reclaim_ap(struct vop_reclaim_args *ap);
870 int vop_bmap_ap(struct vop_bmap_args *ap);
871 int vop_strategy_ap(struct vop_strategy_args *ap);
872 int vop_print_ap(struct vop_print_args *ap);
873 int vop_pathconf_ap(struct vop_pathconf_args *ap);
874 int vop_advlock_ap(struct vop_advlock_args *ap);
875 int vop_balloc_ap(struct vop_balloc_args *ap);
876 int vop_reallocblks_ap(struct vop_reallocblks_args *ap);
877 int vop_getpages_ap(struct vop_getpages_args *ap);
878 int vop_putpages_ap(struct vop_putpages_args *ap);
879 int vop_freeblks_ap(struct vop_freeblks_args *ap);
880 int vop_getacl_ap(struct vop_getacl_args *ap);
881 int vop_setacl_ap(struct vop_setacl_args *ap);
882 int vop_aclcheck_ap(struct vop_aclcheck_args *ap);
883 int vop_getextattr_ap(struct vop_getextattr_args *ap);
884 int vop_setextattr_ap(struct vop_setextattr_args *ap);
885 int vop_mountctl_ap(struct vop_mountctl_args *ap);
887 int vop_nresolve_ap(struct vop_nresolve_args *ap);
888 int vop_nlookupdotdot_ap(struct vop_nlookupdotdot_args *ap);
889 int vop_ncreate_ap(struct vop_ncreate_args *ap);
890 int vop_nmkdir_ap(struct vop_nmkdir_args *ap);
891 int vop_nmknod_ap(struct vop_nmknod_args *ap);
892 int vop_nlink_ap(struct vop_nlink_args *ap);
893 int vop_nsymlink_ap(struct vop_nsymlink_args *ap);
894 int vop_nwhiteout_ap(struct vop_nwhiteout_args *ap);
895 int vop_nremove_ap(struct vop_nremove_args *ap);
896 int vop_nrmdir_ap(struct vop_nrmdir_args *ap);
897 int vop_nrename_ap(struct vop_nrename_args *ap);
900 * VOP operations descriptor. This is used by the vop_ops compiler
901 * to convert VFS vector arrays (typically in vfs/blah/blah_vnops.c)
902 * into a vop_ops operations vector.
904 extern struct syslink_desc vop_default_desc;
905 extern struct syslink_desc vop_old_lookup_desc;
906 extern struct syslink_desc vop_old_create_desc;
907 extern struct syslink_desc vop_old_whiteout_desc;
908 extern struct syslink_desc vop_old_mknod_desc;
909 extern struct syslink_desc vop_open_desc;
910 extern struct syslink_desc vop_close_desc;
911 extern struct syslink_desc vop_access_desc;
912 extern struct syslink_desc vop_getattr_desc;
913 extern struct syslink_desc vop_setattr_desc;
914 extern struct syslink_desc vop_read_desc;
915 extern struct syslink_desc vop_write_desc;
916 extern struct syslink_desc vop_ioctl_desc;
917 extern struct syslink_desc vop_poll_desc;
918 extern struct syslink_desc vop_kqfilter_desc;
919 extern struct syslink_desc vop_revoke_desc;
920 extern struct syslink_desc vop_mmap_desc;
921 extern struct syslink_desc vop_fsync_desc;
922 extern struct syslink_desc vop_old_remove_desc;
923 extern struct syslink_desc vop_old_link_desc;
924 extern struct syslink_desc vop_old_rename_desc;
925 extern struct syslink_desc vop_old_mkdir_desc;
926 extern struct syslink_desc vop_old_rmdir_desc;
927 extern struct syslink_desc vop_old_symlink_desc;
928 extern struct syslink_desc vop_readdir_desc;
929 extern struct syslink_desc vop_readlink_desc;
930 extern struct syslink_desc vop_inactive_desc;
931 extern struct syslink_desc vop_reclaim_desc;
932 extern struct syslink_desc vop_bmap_desc;
933 extern struct syslink_desc vop_strategy_desc;
934 extern struct syslink_desc vop_print_desc;
935 extern struct syslink_desc vop_pathconf_desc;
936 extern struct syslink_desc vop_advlock_desc;
937 extern struct syslink_desc vop_balloc_desc;
938 extern struct syslink_desc vop_reallocblks_desc;
939 extern struct syslink_desc vop_getpages_desc;
940 extern struct syslink_desc vop_putpages_desc;
941 extern struct syslink_desc vop_freeblks_desc;
942 extern struct syslink_desc vop_getacl_desc;
943 extern struct syslink_desc vop_setacl_desc;
944 extern struct syslink_desc vop_aclcheck_desc;
945 extern struct syslink_desc vop_getextattr_desc;
946 extern struct syslink_desc vop_setextattr_desc;
947 extern struct syslink_desc vop_mountctl_desc;
949 extern struct syslink_desc vop_nresolve_desc;
950 extern struct syslink_desc vop_nlookupdotdot_desc;
951 extern struct syslink_desc vop_ncreate_desc;
952 extern struct syslink_desc vop_nmkdir_desc;
953 extern struct syslink_desc vop_nmknod_desc;
954 extern struct syslink_desc vop_nlink_desc;
955 extern struct syslink_desc vop_nsymlink_desc;
956 extern struct syslink_desc vop_nwhiteout_desc;
957 extern struct syslink_desc vop_nremove_desc;
958 extern struct syslink_desc vop_nrmdir_desc;
959 extern struct syslink_desc vop_nrename_desc;
961 #endif
964 * VOP_*() convenience macros extract the operations vector and make the
965 * vop_*() call.
967 #define VOP_OPEN(vp, mode, cred, fp) \
968 vop_open(*(vp)->v_ops, vp, mode, cred, fp)
969 #define VOP_CLOSE(vp, fflag) \
970 vop_close(*(vp)->v_ops, vp, fflag)
971 #define VOP_ACCESS(vp, mode, cred) \
972 vop_access(*(vp)->v_ops, vp, mode, cred)
973 #define VOP_GETATTR(vp, vap) \
974 vop_getattr(*(vp)->v_ops, vp, vap)
975 #define VOP_SETATTR(vp, vap, cred) \
976 vop_setattr(*(vp)->v_ops, vp, vap, cred)
977 #define VOP_READ(vp, uio, ioflag, cred) \
978 vop_read(*(vp)->v_ops, vp, uio, ioflag, cred)
979 #define VOP_WRITE(vp, uio, ioflag, cred) \
980 vop_write(*(vp)->v_ops, vp, uio, ioflag, cred)
981 #define VOP_IOCTL(vp, command, data, fflag, cred) \
982 vop_ioctl(*(vp)->v_ops, vp, command, data, fflag, cred)
983 #define VOP_POLL(vp, events, cred) \
984 vop_poll(*(vp)->v_ops, vp, events, cred)
985 #define VOP_KQFILTER(vp, kn) \
986 vop_kqfilter(*(vp)->v_ops, vp, kn)
987 #define VOP_REVOKE(vp, flags) \
988 vop_revoke(*(vp)->v_ops, vp, flags)
989 #define VOP_MMAP(vp, fflags, cred) \
990 vop_mmap(*(vp)->v_ops, vp, fflags, cred)
991 #define VOP_FSYNC(vp, waitfor) \
992 vop_fsync(*(vp)->v_ops, vp, waitfor)
993 #define VOP_READDIR(vp, uio, cred, eofflag, ncookies, cookies) \
994 vop_readdir(*(vp)->v_ops, vp, uio, cred, eofflag, ncookies, cookies)
995 #define VOP_READLINK(vp, uio, cred) \
996 vop_readlink(*(vp)->v_ops, vp, uio, cred)
997 #define VOP_INACTIVE(vp) \
998 vop_inactive(*(vp)->v_ops, vp)
999 #define VOP_RECLAIM(vp) \
1000 vop_reclaim(*(vp)->v_ops, vp)
1001 #define VOP_BMAP(vp, loff, doffp, runp, runb, cmd) \
1002 vop_bmap(*(vp)->v_ops, vp, loff, doffp, runp, runb, cmd)
1003 #define VOP_PRINT(vp) \
1004 vop_print(*(vp)->v_ops, vp)
1005 #define VOP_PATHCONF(vp, name, retval) \
1006 vop_pathconf(*(vp)->v_ops, vp, name, retval)
1007 #define VOP_ADVLOCK(vp, id, op, fl, flags) \
1008 vop_advlock(*(vp)->v_ops, vp, id, op, fl, flags)
1009 #define VOP_BALLOC(vp, offset, size, cred, flags, bpp) \
1010 vop_balloc(*(vp)->v_ops, vp, offset, size, cred, flags, bpp)
1011 #define VOP_REALLOCBLKS(vp, buflist) \
1012 vop_reallocblks(*(vp)->v_ops, vp, buflist)
1013 #define VOP_GETPAGES(vp, m, count, reqpage, off) \
1014 vop_getpages(*(vp)->v_ops, vp, m, count, reqpage, off)
1015 #define VOP_PUTPAGES(vp, m, count, sync, rtvals, off) \
1016 vop_putpages(*(vp)->v_ops, vp, m, count, sync, rtvals, off)
1017 #define VOP_FREEBLKS(vp, offset, length) \
1018 vop_freeblks(*(vp)->v_ops, vp, offset, length)
1019 #define VOP_GETACL(vp, type, aclp, cred) \
1020 vop_getacl(*(vp)->v_ops, vp, type, aclp, cred)
1021 #define VOP_SETACL(vp, type, aclp, cred) \
1022 vop_setacl(*(vp)->v_ops, vp, type, aclp, cred)
1023 #define VOP_ACLCHECK(vp, type, aclp, cred) \
1024 vop_aclcheck(*(vp)->v_ops, vp, type, aclp, cred)
1025 #define VOP_GETEXTATTR(vp, name, uio, cred) \
1026 vop_getextattr(*(vp)->v_ops, vp, name, uio, cred)
1027 #define VOP_SETEXTATTR(vp, name, uio, cred) \
1028 vop_setextattr(*(vp)->v_ops, vp, name, uio, cred)
1029 /* no VOP_VFSSET() */
1030 /* VOP_STRATEGY - does not exist, use vn_strategy() */
1033 * 'OLD' VOP calls. These calls may only be made by the new API
1034 * compatibility functions in kern/vfs_default.c. Attempting to
1035 * call these functions directly will confuse the namecache. These
1036 * calls are deprecated and being removed from the system and from
1037 * the VFS's.
1039 #define VOP_OLD_LOOKUP(dvp, vpp, cnp) \
1040 vop_old_lookup(*(dvp)->v_ops, dvp, vpp, cnp)
1041 #define VOP_OLD_CREATE(dvp, vpp, cnp, vap) \
1042 vop_old_create(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1043 #define VOP_OLD_MKDIR(dvp, vpp, cnp, vap) \
1044 vop_old_mkdir(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1045 #define VOP_OLD_MKNOD(dvp, vpp, cnp, vap) \
1046 vop_old_mknod(*(dvp)->v_ops, dvp, vpp, cnp, vap)
1047 #define VOP_OLD_LINK(tdvp, vp, cnp) \
1048 vop_old_link(*(tdvp)->v_ops, tdvp, vp, cnp)
1049 #define VOP_OLD_SYMLINK(dvp, vpp, cnp, vap, target) \
1050 vop_old_symlink(*(dvp)->v_ops, dvp, vpp, cnp, vap, target)
1051 #define VOP_OLD_WHITEOUT(dvp, cnp, flags) \
1052 vop_old_whiteout(*(dvp)->v_ops, dvp, cnp, flags)
1053 #define VOP_OLD_RENAME(fdvp, fvp, fcnp, tdvp, tvp, tcnp) \
1054 vop_old_rename(*(fdvp)->v_ops, fdvp, fvp, fcnp, tdvp, tvp, tcnp)
1055 #define VOP_OLD_RMDIR(dvp, vp, cnp) \
1056 vop_old_rmdir(*(dvp)->v_ops, dvp, vp, cnp)
1057 #define VOP_OLD_REMOVE(dvp, vp, cnp) \
1058 vop_old_remove(*(dvp)->v_ops, dvp, vp, cnp)
1061 * 'NEW' VOP calls. These calls use namespaces as an operational basis
1062 * rather then vnodes and replace the OLD calls. Eventually all VFS's
1063 * will support these calls. Those that do not fall through to compatibility
1064 * code in kern/vfs_default which does the magic required to call the old
1065 * routines.
1067 #define VOP_NRESOLVE(nch, dvp, cred) \
1068 vop_nresolve((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1069 #define VOP_NLOOKUPDOTDOT(dvp, vpp, cred, fakename) \
1070 vop_nlookupdotdot(*(dvp)->v_ops, dvp, vpp, cred, fakename)
1071 #define VOP_NCREATE(nch, dvp, vpp, cred, vap) \
1072 vop_ncreate((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1073 #define VOP_NMKDIR(nch, dvp, vpp, cred, vap) \
1074 vop_nmkdir((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1075 #define VOP_NMKNOD(nch, dvp, vpp, cred, vap) \
1076 vop_nmknod((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap)
1077 #define VOP_NLINK(nch, dvp, vp, cred) \
1078 vop_nlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vp, cred)
1079 #define VOP_NSYMLINK(nch, dvp, vpp, cred, vap, target) \
1080 vop_nsymlink((nch)->mount->mnt_vn_use_ops, nch, dvp, vpp, cred, vap, target)
1081 #define VOP_NWHITEOUT(nch, dvp, cred, flags) \
1082 vop_nwhiteout((nch)->mount->mnt_vn_use_ops, nch, dvp, cred, flags)
1083 #define VOP_NRENAME(fnch, tnch, fdvp, tdvp, cred) \
1084 vop_nrename((fnch)->mount->mnt_vn_use_ops, fnch, tnch, fdvp, tdvp, cred)
1085 #define VOP_NRMDIR(nch, dvp, cred) \
1086 vop_nrmdir((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1087 #define VOP_NREMOVE(nch, dvp, cred) \
1088 vop_nremove((nch)->mount->mnt_vn_use_ops, nch, dvp, cred)
1090 #endif