2 * A large chunk of this file appears to be copied directly from
3 * sys/nfsclient/nfs_bio.c, which has the following license:
6 * Copyright (c) 1989, 1993
7 * The Regents of the University of California. All rights reserved.
9 * This code is derived from software contributed to Berkeley by
10 * Rick Macklem at The University of Guelph.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * @(#)nfs_bio.c 8.9 (Berkeley) 3/30/95
43 * Pursuant to a statement of U.C. Berkeley dated 1999-07-22, this license
44 * is amended to drop clause (3) above.
47 #include <afsconfig.h>
48 #include <afs/param.h>
53 #include <afs/sysincludes.h> /* Standard vendor system headers */
54 #include <afsincludes.h> /* Afs-based standard headers */
55 #include <afs/afs_stats.h> /* statistics */
56 #include <sys/malloc.h>
57 #include <sys/namei.h>
58 #include <sys/unistd.h>
59 #ifndef AFS_FBSD50_ENV
60 #include <vm/vm_zone.h>
62 #include <vm/vm_page.h>
63 #include <vm/vm_object.h>
64 #include <vm/vm_pager.h>
65 #include <vm/vnode_pager.h>
66 extern int afs_pbuf_freecnt;
69 static vop_access_t afs_vop_access;
70 static vop_advlock_t afs_vop_advlock;
71 static vop_close_t afs_vop_close;
72 static vop_create_t afs_vop_create;
73 static vop_fsync_t afs_vop_fsync;
74 static vop_getattr_t afs_vop_getattr;
75 static vop_getpages_t afs_vop_getpages;
76 static vop_inactive_t afs_vop_inactive;
77 static vop_ioctl_t afs_vop_ioctl;
78 static vop_link_t afs_vop_link;
79 static vop_lookup_t afs_vop_lookup;
80 static vop_mkdir_t afs_vop_mkdir;
81 static vop_mknod_t afs_vop_mknod;
82 static vop_open_t afs_vop_open;
83 static vop_pathconf_t afs_vop_pathconf;
84 static vop_poll_t afs_vop_poll;
85 static vop_print_t afs_vop_print;
86 static vop_putpages_t afs_vop_putpages;
87 static vop_read_t afs_vop_read;
88 static vop_readdir_t afs_vop_readdir;
89 static vop_readlink_t afs_vop_readlink;
90 static vop_reclaim_t afs_vop_reclaim;
91 static vop_remove_t afs_vop_remove;
92 static vop_rename_t afs_vop_rename;
93 static vop_rmdir_t afs_vop_rmdir;
94 static vop_setattr_t afs_vop_setattr;
95 static vop_strategy_t afs_vop_strategy;
96 static vop_symlink_t afs_vop_symlink;
97 static vop_write_t afs_vop_write;
98 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD90_ENV)
99 static vop_lock1_t afs_vop_lock;
100 static vop_unlock_t afs_vop_unlock;
101 static vop_islocked_t afs_vop_islocked;
104 struct vop_vector afs_vnodeops = {
105 .vop_default = &default_vnodeops,
106 .vop_access = afs_vop_access,
107 .vop_advlock = afs_vop_advlock,
108 .vop_close = afs_vop_close,
109 .vop_create = afs_vop_create,
110 .vop_fsync = afs_vop_fsync,
111 .vop_getattr = afs_vop_getattr,
112 .vop_getpages = afs_vop_getpages,
113 .vop_inactive = afs_vop_inactive,
114 .vop_ioctl = afs_vop_ioctl,
115 .vop_lease = VOP_NULL,
116 .vop_link = afs_vop_link,
117 .vop_lookup = afs_vop_lookup,
118 .vop_mkdir = afs_vop_mkdir,
119 .vop_mknod = afs_vop_mknod,
120 .vop_open = afs_vop_open,
121 .vop_pathconf = afs_vop_pathconf,
122 .vop_poll = afs_vop_poll,
123 .vop_print = afs_vop_print,
124 .vop_putpages = afs_vop_putpages,
125 .vop_read = afs_vop_read,
126 .vop_readdir = afs_vop_readdir,
127 .vop_readlink = afs_vop_readlink,
128 .vop_reclaim = afs_vop_reclaim,
129 .vop_remove = afs_vop_remove,
130 .vop_rename = afs_vop_rename,
131 .vop_rmdir = afs_vop_rmdir,
132 .vop_setattr = afs_vop_setattr,
133 .vop_strategy = afs_vop_strategy,
134 .vop_symlink = afs_vop_symlink,
135 .vop_write = afs_vop_write,
136 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD90_ENV)
137 .vop_lock1 = afs_vop_lock,
138 .vop_unlock = afs_vop_unlock,
139 .vop_islocked = afs_vop_islocked,
143 #else /* AFS_FBSD60_ENV */
145 int afs_vop_lookup(struct vop_lookup_args *);
146 int afs_vop_create(struct vop_create_args *);
147 int afs_vop_mknod(struct vop_mknod_args *);
148 int afs_vop_open(struct vop_open_args *);
149 int afs_vop_close(struct vop_close_args *);
150 int afs_vop_access(struct vop_access_args *);
151 int afs_vop_getattr(struct vop_getattr_args *);
152 int afs_vop_setattr(struct vop_setattr_args *);
153 int afs_vop_read(struct vop_read_args *);
154 int afs_vop_write(struct vop_write_args *);
155 int afs_vop_getpages(struct vop_getpages_args *);
156 int afs_vop_putpages(struct vop_putpages_args *);
157 int afs_vop_ioctl(struct vop_ioctl_args *);
158 static int afs_vop_pathconf(struct vop_pathconf_args *);
159 int afs_vop_poll(struct vop_poll_args *);
160 #ifndef AFS_FBSD50_ENV
161 int afs_vop_mmap(struct vop_mmap_args *);
163 int afs_vop_fsync(struct vop_fsync_args *);
164 int afs_vop_remove(struct vop_remove_args *);
165 int afs_vop_link(struct vop_link_args *);
166 int afs_vop_rename(struct vop_rename_args *);
167 int afs_vop_mkdir(struct vop_mkdir_args *);
168 int afs_vop_rmdir(struct vop_rmdir_args *);
169 int afs_vop_symlink(struct vop_symlink_args *);
170 int afs_vop_readdir(struct vop_readdir_args *);
171 int afs_vop_readlink(struct vop_readlink_args *);
172 int afs_vop_inactive(struct vop_inactive_args *);
173 int afs_vop_reclaim(struct vop_reclaim_args *);
174 int afs_vop_bmap(struct vop_bmap_args *);
175 int afs_vop_strategy(struct vop_strategy_args *);
176 int afs_vop_print(struct vop_print_args *);
177 int afs_vop_advlock(struct vop_advlock_args *);
181 /* Global vfs data structures for AFS. */
182 vop_t **afs_vnodeop_p;
183 struct vnodeopv_entry_desc afs_vnodeop_entries[] = {
184 {&vop_default_desc, (vop_t *) vop_defaultop},
185 {&vop_access_desc, (vop_t *) afs_vop_access}, /* access */
186 {&vop_advlock_desc, (vop_t *) afs_vop_advlock}, /* advlock */
187 {&vop_bmap_desc, (vop_t *) afs_vop_bmap}, /* bmap */
188 #ifndef AFS_FBSD50_ENV
189 {&vop_bwrite_desc, (vop_t *) vop_stdbwrite},
191 {&vop_close_desc, (vop_t *) afs_vop_close}, /* close */
192 {&vop_createvobject_desc, (vop_t *) vop_stdcreatevobject},
193 {&vop_destroyvobject_desc, (vop_t *) vop_stddestroyvobject},
194 {&vop_create_desc, (vop_t *) afs_vop_create}, /* create */
195 {&vop_fsync_desc, (vop_t *) afs_vop_fsync}, /* fsync */
196 {&vop_getattr_desc, (vop_t *) afs_vop_getattr}, /* getattr */
197 {&vop_getpages_desc, (vop_t *) afs_vop_getpages}, /* read */
198 {&vop_getvobject_desc, (vop_t *) vop_stdgetvobject},
199 {&vop_putpages_desc, (vop_t *) afs_vop_putpages}, /* write */
200 {&vop_inactive_desc, (vop_t *) afs_vop_inactive}, /* inactive */
201 {&vop_lease_desc, (vop_t *) vop_null},
202 {&vop_link_desc, (vop_t *) afs_vop_link}, /* link */
203 {&vop_lookup_desc, (vop_t *) afs_vop_lookup}, /* lookup */
204 {&vop_mkdir_desc, (vop_t *) afs_vop_mkdir}, /* mkdir */
205 {&vop_mknod_desc, (vop_t *) afs_vop_mknod}, /* mknod */
206 #ifndef AFS_FBSD50_ENV
207 {&vop_mmap_desc, (vop_t *) afs_vop_mmap}, /* mmap */
209 {&vop_open_desc, (vop_t *) afs_vop_open}, /* open */
210 {&vop_pathconf_desc, (vop_t *) afs_vop_pathconf}, /* pathconf */
211 {&vop_poll_desc, (vop_t *) afs_vop_poll}, /* select */
212 {&vop_print_desc, (vop_t *) afs_vop_print}, /* print */
213 {&vop_read_desc, (vop_t *) afs_vop_read}, /* read */
214 {&vop_readdir_desc, (vop_t *) afs_vop_readdir}, /* readdir */
215 {&vop_readlink_desc, (vop_t *) afs_vop_readlink}, /* readlink */
216 {&vop_reclaim_desc, (vop_t *) afs_vop_reclaim}, /* reclaim */
217 {&vop_remove_desc, (vop_t *) afs_vop_remove}, /* remove */
218 {&vop_rename_desc, (vop_t *) afs_vop_rename}, /* rename */
219 {&vop_rmdir_desc, (vop_t *) afs_vop_rmdir}, /* rmdir */
220 {&vop_setattr_desc, (vop_t *) afs_vop_setattr}, /* setattr */
221 {&vop_strategy_desc, (vop_t *) afs_vop_strategy}, /* strategy */
222 {&vop_symlink_desc, (vop_t *) afs_vop_symlink}, /* symlink */
223 {&vop_write_desc, (vop_t *) afs_vop_write}, /* write */
224 {&vop_ioctl_desc, (vop_t *) afs_vop_ioctl}, /* XXX ioctl */
225 /*{ &vop_seek_desc, afs_vop_seek }, *//* seek */
226 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD90_ENV)
227 {&vop_lock1_desc, (vop_t *) afs_vop_lock}, /* lock */
228 {&vop_unlock_desc, (vop_t *) afs_vop_unlock}, /* unlock */
229 {&vop_islocked_desc, (vop_t *) afs_vop_islocked}, /* islocked */
233 struct vnodeopv_desc afs_vnodeop_opv_desc =
234 { &afs_vnodeop_p, afs_vnodeop_entries };
235 #endif /* AFS_FBSD60_ENV */
238 struct componentname *cnp = ap->a_cnp; \
240 MALLOC(name, char *, cnp->cn_namelen+1, M_TEMP, M_WAITOK); \
241 memcpy(name, cnp->cn_nameptr, cnp->cn_namelen); \
242 name[cnp->cn_namelen] = '\0'
244 #define DROPNAME() FREE(name, M_TEMP)
246 /* This is a bit of a cheat... */
247 #ifdef AFS_FBSD50_ENV
251 #if defined(AFS_FBSD80_ENV)
252 #define ma_vn_lock(vp, flags, p) (vn_lock(vp, flags))
253 #define MA_VOP_LOCK(vp, flags, p) (VOP_LOCK(vp, flags))
254 #define MA_VOP_UNLOCK(vp, flags, p) (VOP_UNLOCK(vp, flags))
256 #define ma_vn_lock(vp, flags, p) (vn_lock(vp, flags, p))
257 #define MA_VOP_LOCK(vp, flags, p) (VOP_LOCK(vp, flags, p))
258 #define MA_VOP_UNLOCK(vp, flags, p) (VOP_UNLOCK(vp, flags, p))
261 #ifdef AFS_FBSD70_ENV
262 #ifndef AFS_FBSD80_ENV
263 /* From kern_lock.c */
264 #define COUNT(td, x) if ((td)) (td)->td_locks += (x)
265 #define LK_ALL (LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE | \
266 LK_SHARE_NONZERO | LK_WAIT_NONZERO)
269 sharelock(struct thread *td, struct lock *lkp, int incr) {
270 lkp->lk_flags |= LK_SHARE_NONZERO;
271 lkp->lk_sharecount += incr;
277 * Standard lock, unlock and islocked functions.
281 struct vop_lock1_args /* {
289 struct vnode *vp = ap->a_vp;
290 struct lock *lkp = vp->v_vnlock;
292 #if 0 && defined(AFS_FBSD80_ENV) && !defined(UKERNEL)
293 afs_warn("afs_vop_lock: tid %d pid %d \"%s\"\n", curthread->td_tid,
294 curthread->td_proc->p_pid, curthread->td_name);
298 #ifdef AFS_FBSD80_ENV
299 return (_lockmgr_args(lkp, ap->a_flags, VI_MTX(vp),
300 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT,
301 ap->a_file, ap->a_line));
303 return (_lockmgr(lkp, ap->a_flags, VI_MTX(vp), ap->a_td, ap->a_file, ap->a_line));
310 struct vop_unlock_args /* {
316 struct vnode *vp = ap->a_vp;
317 struct lock *lkp = vp->v_vnlock;
319 #ifdef AFS_FBSD80_ENV
322 op = ((ap->a_flags) | LK_RELEASE) & LK_TYPE_MASK;
323 int glocked = ISAFS_GLOCK();
326 if ((op & (op - 1)) != 0) {
327 afs_warn("afs_vop_unlock: Shit.\n");
330 code = lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp));
336 /* possibly in current code path where this
337 * forces trace, we should have had a (shared? not
338 * necessarily, see _lockmgr in kern_lock.c) lock
339 * and that's the real bug. but.
342 if ((lkp->lk_exclusivecount == 0) &&
343 (!(lkp->lk_flags & LK_SHARE_NONZERO))) {
344 sharelock(ap->a_td, lkp, 1);
347 return (lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp),
355 struct vop_islocked_args /* {
357 struct thread *a_td; (not in 80)
360 #ifdef AFS_FBSD80_ENV
361 return (lockstatus(ap->a_vp->v_vnlock));
363 return (lockstatus(ap->a_vp->v_vnlock, ap->a_td));
369 * Mosty copied from sys/ufs/ufs/ufs_vnops.c:ufs_pathconf().
370 * We should know the correct answers to these questions with
371 * respect to the AFS protocol (which may differ from the UFS
372 * values) but for the moment this will do.
375 afs_vop_pathconf(struct vop_pathconf_args *ap)
380 switch (ap->a_name) {
382 *ap->a_retval = LINK_MAX;
385 *ap->a_retval = NAME_MAX;
388 *ap->a_retval = PATH_MAX;
391 *ap->a_retval = PIPE_BUF;
393 case _PC_CHOWN_RESTRICTED:
399 #ifdef _PC_ACL_EXTENDED
400 case _PC_ACL_EXTENDED:
403 case _PC_ACL_PATH_MAX:
407 #ifdef _PC_MAC_PRESENT
408 case _PC_MAC_PRESENT:
414 /* _PC_ASYNC_IO should have been handled by upper layers. */
415 KASSERT(0, ("_PC_ASYNC_IO should not get here"));
425 #ifdef _PC_ALLOC_SIZE_MIN
426 case _PC_ALLOC_SIZE_MIN:
427 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
430 #ifdef _PC_FILESIZEBITS
431 case _PC_FILESIZEBITS:
432 *ap->a_retval = 32; /* XXX */
435 #ifdef _PC_REC_INCR_XFER_SIZE
436 case _PC_REC_INCR_XFER_SIZE:
437 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
439 case _PC_REC_MAX_XFER_SIZE:
440 *ap->a_retval = -1; /* means ``unlimited'' */
442 case _PC_REC_MIN_XFER_SIZE:
443 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
445 case _PC_REC_XFER_ALIGN:
446 *ap->a_retval = PAGE_SIZE;
449 #ifdef _PC_SYMLINK_MAX
450 case _PC_SYMLINK_MAX:
451 *ap->a_retval = MAXPATHLEN;
463 struct vop_lookup_args /* {
464 * struct vnodeop_desc * a_desc;
465 * struct vnode *a_dvp;
466 * struct vnode **a_vpp;
467 * struct componentname *a_cnp;
472 struct vnode *vp, *dvp;
473 register int flags = ap->a_cnp->cn_flags;
474 int lockparent; /* 1 => lockparent flag is set */
475 int wantparent; /* 1 => wantparent or lockparent flag */
476 #ifdef AFS_FBSD50_ENV
477 struct thread *p = ap->a_cnp->cn_thread;
479 struct proc *p = ap->a_cnp->cn_proc;
483 if (dvp->v_type != VDIR) {
484 #ifndef AFS_FBSD70_ENV
490 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT))
495 lockparent = flags & LOCKPARENT;
496 wantparent = flags & (LOCKPARENT | WANTPARENT);
498 #ifdef AFS_FBSD80_ENV
499 cnp->cn_flags |= MPSAFE; /* steel */
502 #ifndef AFS_FBSD70_ENV
503 if (flags & ISDOTDOT)
504 VOP_UNLOCK(dvp, 0, p);
508 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
512 if (flags & ISDOTDOT)
513 MA_VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p);
514 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME)
515 && (flags & ISLASTCN) && error == ENOENT)
517 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
518 cnp->cn_flags |= SAVENAME;
523 vp = AFSTOV(vcp); /* always get a node if no error */
525 /* The parent directory comes in locked. We unlock it on return
526 * unless the caller wants it left locked.
527 * we also always return the vnode locked. */
529 if (flags & ISDOTDOT) {
530 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
531 /* always return the child locked */
532 if (lockparent && (flags & ISLASTCN)
533 && (error = ma_vn_lock(dvp, LK_EXCLUSIVE, p))) {
538 } else if (vp == dvp) {
539 /* they're the same; afs_lookup() already ref'ed the leaf.
540 * It came in locked, so we don't need to ref OR lock it */
542 if (!lockparent || !(flags & ISLASTCN)) {
543 #ifndef AFS_FBSD70_ENV /* 6 too? */
544 MA_VOP_UNLOCK(dvp, 0, p); /* done with parent. */
547 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
548 /* always return the child locked */
552 if ((cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN))
553 || (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)))
554 cnp->cn_flags |= SAVENAME;
562 struct vop_create_args /* {
563 * struct vnode *a_dvp;
564 * struct vnode **a_vpp;
565 * struct componentname *a_cnp;
566 * struct vattr *a_vap;
571 register struct vnode *dvp = ap->a_dvp;
572 #ifdef AFS_FBSD50_ENV
573 struct thread *p = ap->a_cnp->cn_thread;
575 struct proc *p = ap->a_cnp->cn_proc;
581 afs_create(VTOAFS(dvp), name, ap->a_vap,
582 ap->a_vap->va_vaflags & VA_EXCLUSIVE ? EXCL : NONEXCL,
583 ap->a_vap->va_mode, &vcp, cnp->cn_cred);
591 *ap->a_vpp = AFSTOV(vcp);
592 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
602 struct vop_mknod_args /* {
603 * struct vnode *a_dvp;
604 * struct vnode **a_vpp;
605 * struct componentname *a_cnp;
606 * struct vattr *a_vap;
614 validate_vops(struct vnode *vp, int after)
617 struct vnodeopv_entry_desc *this;
618 for (this = afs_vnodeop_entries; this->opve_op; this++) {
619 if (vp->v_op[this->opve_op->vdesc_offset] != this->opve_impl) {
621 printf("v_op %d ", after);
625 printf("For oper %d (%s), func is %p, not %p",
626 this->opve_op->vdesc_offset, this->opve_op->vdesc_name,
627 vp->v_op[this->opve_op->vdesc_offset], this->opve_impl);
635 struct vop_open_args /* {
636 * struct vnode *a_vp;
638 * struct ucred *a_cred;
643 struct vcache *vc = VTOAFS(ap->a_vp);
646 error = afs_open(&vc, ap->a_mode, ap->a_cred);
648 if (AFSTOV(vc) != ap->a_vp)
649 panic("AFS open changed vnode!");
652 #ifdef AFS_FBSD60_ENV
653 vnode_create_vobject(ap->a_vp, vc->f.m.Length, ap->a_td);
655 osi_FlushPages(vc, ap->a_cred);
661 struct vop_close_args /* {
662 * struct vnode *a_vp;
664 * struct ucred *a_cred;
669 struct vcache *avc = VTOAFS(ap->a_vp);
672 code = afs_close(avc, ap->a_fflag, ap->a_cred);
674 code = afs_close(avc, ap->a_fflag, afs_osi_credp);
675 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
682 struct vop_access_args /* {
683 * struct vnode *a_vp;
685 * struct ucred *a_cred;
691 code = afs_access(VTOAFS(ap->a_vp), ap->a_mode, ap->a_cred);
698 struct vop_getattr_args /* {
699 * struct vnode *a_vp;
700 * struct vattr *a_vap;
701 * struct ucred *a_cred;
707 code = afs_getattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
714 struct vop_setattr_args /* {
715 * struct vnode *a_vp;
716 * struct vattr *a_vap;
717 * struct ucred *a_cred;
723 code = afs_setattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
730 struct vop_read_args /* {
731 * struct vnode *a_vp;
734 * struct ucred *a_cred;
739 struct vcache *avc = VTOAFS(ap->a_vp);
741 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
742 code = afs_read(avc, ap->a_uio, ap->a_cred, 0, 0, 0);
747 /* struct vop_getpages_args {
748 * struct vnode *a_vp;
752 * vm_oofset_t a_offset;
756 afs_vop_getpages(struct vop_getpages_args *ap)
759 int i, nextoff, size, toff, npages;
768 #ifdef AFS_FBSD50_ENV
773 if ((object = vp->v_object) == NULL) {
774 printf("afs_getpages: called with non-merged cache vnode??\n");
775 return VM_PAGER_ERROR;
777 npages = btoc(ap->a_count);
779 * If the requested page is partially valid, just return it and
780 * allow the pager to zero-out the blanks. Partially valid pages
781 * can only occur at the file EOF.
785 vm_page_t m = ap->a_m[ap->a_reqpage];
787 #ifdef AFS_FBSD50_ENV
788 VM_OBJECT_LOCK(object);
789 vm_page_lock_queues();
792 /* handled by vm_fault now */
793 /* vm_page_zero_invalid(m, TRUE); */
794 for (i = 0; i < npages; ++i) {
795 if (i != ap->a_reqpage)
796 vm_page_free(ap->a_m[i]);
798 #ifdef AFS_FBSD50_ENV
799 vm_page_unlock_queues();
800 VM_OBJECT_UNLOCK(object);
804 #ifdef AFS_FBSD50_ENV
805 vm_page_unlock_queues();
806 VM_OBJECT_UNLOCK(object);
809 bp = getpbuf(&afs_pbuf_freecnt);
811 kva = (vm_offset_t) bp->b_data;
812 pmap_qenter(kva, ap->a_m, npages);
813 #ifdef AFS_FBSD50_ENV
815 cnt.v_vnodepgsin += npages;
818 iov.iov_base = (caddr_t) kva;
819 iov.iov_len = ap->a_count;
822 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
823 uio.uio_resid = ap->a_count;
824 uio.uio_segflg = UIO_SYSSPACE;
825 uio.uio_rw = UIO_READ;
826 #ifdef AFS_FBSD50_ENV
827 uio.uio_td = curthread;
829 uio.uio_procp = curproc;
833 osi_FlushPages(avc, osi_curcred()); /* hold bozon lock, but not basic vnode lock */
834 code = afs_read(avc, &uio, osi_curcred(), 0, 0, 0);
836 pmap_qremove(kva, npages);
838 relpbuf(bp, &afs_pbuf_freecnt);
840 if (code && (uio.uio_resid == ap->a_count)) {
841 #ifdef AFS_FBSD50_ENV
842 VM_OBJECT_LOCK(object);
843 vm_page_lock_queues();
845 for (i = 0; i < npages; ++i) {
846 if (i != ap->a_reqpage)
847 vm_page_free(ap->a_m[i]);
849 #ifdef AFS_FBSD50_ENV
850 vm_page_unlock_queues();
851 VM_OBJECT_UNLOCK(object);
853 return VM_PAGER_ERROR;
856 size = ap->a_count - uio.uio_resid;
857 #ifdef AFS_FBSD50_ENV
858 VM_OBJECT_LOCK(object);
859 vm_page_lock_queues();
861 for (i = 0, toff = 0; i < npages; i++, toff = nextoff) {
863 nextoff = toff + PAGE_SIZE;
866 m->flags &= ~PG_ZERO;
868 if (nextoff <= size) {
870 * Read operation filled an entire page
872 m->valid = VM_PAGE_BITS_ALL;
874 } else if (size > toff) {
876 * Read operation filled a partial page.
879 vm_page_set_validclean(m, 0, size - toff);
880 /* handled by vm_fault now */
881 /* vm_page_zero_invalid(m, TRUE); */
884 if (i != ap->a_reqpage) {
886 * Whether or not to leave the page activated is up in
887 * the air, but we should put the page on a page queue
888 * somewhere (it already is in the object). Result:
889 * It appears that emperical results show that
890 * deactivating pages is best.
894 * Just in case someone was asking for this page we
895 * now tell them that it is ok to use.
898 #if defined(AFS_FBSD70_ENV)
899 if (m->oflags & VPO_WANTED)
901 if (m->flags & PG_WANTED)
905 vm_page_deactivate(m);
912 #ifdef AFS_FBSD50_ENV
913 vm_page_unlock_queues();
914 VM_OBJECT_UNLOCK(object);
921 struct vop_write_args /* {
922 * struct vnode *a_vp;
925 * struct ucred *a_cred;
929 struct vcache *avc = VTOAFS(ap->a_vp);
931 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
933 afs_write(VTOAFS(ap->a_vp), ap->a_uio, ap->a_ioflag, ap->a_cred, 0);
939 * struct vop_putpages_args {
940 * struct vnode *a_vp;
945 * vm_oofset_t a_offset;
949 * All of the pages passed to us in ap->a_m[] are already marked as busy,
950 * so there is no additional locking required to set their flags. -GAW
953 afs_vop_putpages(struct vop_putpages_args *ap)
956 int i, size, npages, sync;
964 #ifdef AFS_FBSD50_ENV
970 /* Perhaps these two checks should just be KASSERTs instead... */
971 if (vp->v_object == NULL) {
972 printf("afs_putpages: called with non-merged cache vnode??\n");
973 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
975 if (vType(avc) != VREG) {
976 printf("afs_putpages: not VREG");
977 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
979 npages = btoc(ap->a_count);
980 for (i = 0; i < npages; i++)
981 ap->a_rtvals[i] = VM_PAGER_AGAIN;
982 bp = getpbuf(&afs_pbuf_freecnt);
984 kva = (vm_offset_t) bp->b_data;
985 pmap_qenter(kva, ap->a_m, npages);
986 #ifdef AFS_FBSD50_ENV
988 cnt.v_vnodepgsout += ap->a_count;
991 iov.iov_base = (caddr_t) kva;
992 iov.iov_len = ap->a_count;
995 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
996 uio.uio_resid = ap->a_count;
997 uio.uio_segflg = UIO_SYSSPACE;
998 uio.uio_rw = UIO_WRITE;
999 #ifdef AFS_FBSD50_ENV
1000 uio.uio_td = curthread;
1002 uio.uio_procp = curproc;
1005 if (ap->a_sync & VM_PAGER_PUT_SYNC)
1007 /*if (ap->a_sync & VM_PAGER_PUT_INVAL)
1008 * sync |= IO_INVAL; */
1011 code = afs_write(avc, &uio, sync, osi_curcred(), 0);
1014 pmap_qremove(kva, npages);
1015 relpbuf(bp, &afs_pbuf_freecnt);
1018 size = ap->a_count - uio.uio_resid;
1019 for (i = 0; i < round_page(size) / PAGE_SIZE; i++) {
1020 ap->a_rtvals[i] = VM_PAGER_OK;
1021 vm_page_undirty(ap->a_m[i]);
1024 return ap->a_rtvals[0];
1029 struct vop_ioctl_args /* {
1030 * struct vnode *a_vp;
1034 * struct ucred *a_cred;
1038 struct vcache *tvc = VTOAFS(ap->a_vp);
1041 /* in case we ever get in here... */
1043 AFS_STATCNT(afs_ioctl);
1044 if (((ap->a_command >> 8) & 0xff) == 'V') {
1045 /* This is a VICEIOCTL call */
1047 error = HandleIoctl(tvc, ap->a_command, ap->a_data);
1051 /* No-op call; just return. */
1059 struct vop_poll_args /* {
1060 * struct vnode *a_vp;
1062 * struct ucred *a_cred;
1067 * We should really check to see if I/O is possible.
1075 * NB Currently unsupported.
1080 struct vop_mmap_args /* {
1081 * struct vnode *a_vp;
1083 * struct ucred *a_cred;
1092 struct vop_fsync_args /* {
1093 * struct vnode *a_vp;
1094 * struct ucred *a_cred;
1100 register struct vnode *vp = ap->a_vp;
1103 /*vflushbuf(vp, wait); */
1104 #ifdef AFS_FBSD60_ENV
1105 error = afs_fsync(VTOAFS(vp), ap->a_td->td_ucred);
1108 error = afs_fsync(VTOAFS(vp), ap->a_cred);
1110 error = afs_fsync(VTOAFS(vp), afs_osi_credp);
1118 struct vop_remove_args /* {
1119 * struct vnode *a_dvp;
1120 * struct vnode *a_vp;
1121 * struct componentname *a_cnp;
1125 register struct vnode *vp = ap->a_vp;
1126 register struct vnode *dvp = ap->a_dvp;
1130 error = afs_remove(VTOAFS(dvp), name, cnp->cn_cred);
1139 struct vop_link_args /* {
1140 * struct vnode *a_vp;
1141 * struct vnode *a_tdvp;
1142 * struct componentname *a_cnp;
1146 register struct vnode *dvp = ap->a_tdvp;
1147 register struct vnode *vp = ap->a_vp;
1148 #ifdef AFS_FBSD50_ENV
1149 struct thread *p = ap->a_cnp->cn_thread;
1151 struct proc *p = ap->a_cnp->cn_proc;
1155 if (dvp->v_mount != vp->v_mount) {
1159 if (vp->v_type == VDIR) {
1163 if ((error = ma_vn_lock(vp, LK_EXCLUSIVE, p)) != 0) {
1167 error = afs_link(VTOAFS(vp), VTOAFS(dvp), name, cnp->cn_cred);
1170 MA_VOP_UNLOCK(vp, 0, p);
1178 struct vop_rename_args /* {
1179 * struct vnode *a_fdvp;
1180 * struct vnode *a_fvp;
1181 * struct componentname *a_fcnp;
1182 * struct vnode *a_tdvp;
1183 * struct vnode *a_tvp;
1184 * struct componentname *a_tcnp;
1188 struct componentname *fcnp = ap->a_fcnp;
1190 struct componentname *tcnp = ap->a_tcnp;
1192 struct vnode *tvp = ap->a_tvp;
1193 register struct vnode *tdvp = ap->a_tdvp;
1194 struct vnode *fvp = ap->a_fvp;
1195 register struct vnode *fdvp = ap->a_fdvp;
1196 #ifdef AFS_FBSD50_ENV
1197 struct thread *p = fcnp->cn_thread;
1199 struct proc *p = fcnp->cn_proc;
1203 * Check for cross-device rename.
1205 if ((fvp->v_mount != tdvp->v_mount)
1206 || (tvp && (fvp->v_mount != tvp->v_mount))) {
1220 * if fvp == tvp, we're just removing one name of a pair of
1221 * directory entries for the same element. convert call into rename.
1222 ( (pinched from FreeBSD 4.4's ufs_rename())
1226 if (fvp->v_type == VDIR) {
1231 /* Release destination completely. */
1235 /* Delete source. */
1238 fcnp->cn_flags &= ~MODMASK;
1239 fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
1240 if ((fcnp->cn_flags & SAVESTART) == 0)
1241 panic("afs_rename: lost from startdir");
1242 fcnp->cn_nameiop = DELETE;
1244 error = relookup(fdvp, &fvp, fcnp);
1251 error = VOP_REMOVE(fdvp, fvp, fcnp);
1259 if ((error = ma_vn_lock(fvp, LK_EXCLUSIVE, p)) != 0)
1262 MALLOC(fname, char *, fcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1263 memcpy(fname, fcnp->cn_nameptr, fcnp->cn_namelen);
1264 fname[fcnp->cn_namelen] = '\0';
1265 MALLOC(tname, char *, tcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1266 memcpy(tname, tcnp->cn_nameptr, tcnp->cn_namelen);
1267 tname[tcnp->cn_namelen] = '\0';
1271 /* XXX use "from" or "to" creds? NFS uses "to" creds */
1273 afs_rename(VTOAFS(fdvp), fname, VTOAFS(tdvp), tname, tcnp->cn_cred);
1276 FREE(fname, M_TEMP);
1277 FREE(tname, M_TEMP);
1291 struct vop_mkdir_args /* {
1292 * struct vnode *a_dvp;
1293 * struct vnode **a_vpp;
1294 * struct componentname *a_cnp;
1295 * struct vattr *a_vap;
1298 register struct vnode *dvp = ap->a_dvp;
1299 register struct vattr *vap = ap->a_vap;
1302 #ifdef AFS_FBSD50_ENV
1303 struct thread *p = ap->a_cnp->cn_thread;
1305 struct proc *p = ap->a_cnp->cn_proc;
1310 if ((cnp->cn_flags & HASBUF) == 0)
1311 panic("afs_vop_mkdir: no name");
1314 error = afs_mkdir(VTOAFS(dvp), name, vap, &vcp, cnp->cn_cred);
1321 *ap->a_vpp = AFSTOV(vcp);
1322 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
1331 struct vop_rmdir_args /* {
1332 * struct vnode *a_dvp;
1333 * struct vnode *a_vp;
1334 * struct componentname *a_cnp;
1338 register struct vnode *dvp = ap->a_dvp;
1342 error = afs_rmdir(VTOAFS(dvp), name, cnp->cn_cred);
1348 /* struct vop_symlink_args {
1349 * struct vnode *a_dvp;
1350 * struct vnode **a_vpp;
1351 * struct componentname *a_cnp;
1352 * struct vattr *a_vap;
1357 afs_vop_symlink(struct vop_symlink_args *ap)
1360 struct vnode *newvp;
1371 afs_symlink(VTOAFS(dvp), name, ap->a_vap, ap->a_target, cnp->cn_cred);
1373 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
1375 newvp = AFSTOV(vcp);
1376 #ifdef AFS_FBSD50_ENV
1377 ma_vn_lock(newvp, LK_EXCLUSIVE | LK_RETRY, cnp->cn_thread);
1379 ma_vn_lock(newvp, LK_EXCLUSIVE | LK_RETRY, cnp->cn_proc);
1385 *(ap->a_vpp) = newvp;
1391 struct vop_readdir_args /* {
1392 * struct vnode *a_vp;
1393 * struct uio *a_uio;
1394 * struct ucred *a_cred;
1396 * u_long *a_cookies;
1402 /* printf("readdir %x cookies %x ncookies %d\n", ap->a_vp, ap->a_cookies,
1404 off = ap->a_uio->uio_offset;
1407 afs_readdir(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred, ap->a_eofflag);
1409 if (!error && ap->a_ncookies != NULL) {
1410 struct uio *uio = ap->a_uio;
1411 const struct dirent *dp, *dp_start, *dp_end;
1413 u_long *cookies, *cookiep;
1415 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
1416 panic("afs_readdir: burned cookies");
1417 dp = (const struct dirent *)
1418 ((const char *)uio->uio_iov->iov_base - (uio->uio_offset - off));
1420 dp_end = (const struct dirent *)uio->uio_iov->iov_base;
1421 for (dp_start = dp, ncookies = 0; dp < dp_end;
1422 dp = (const struct dirent *)((const char *)dp + dp->d_reclen))
1425 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP,
1427 for (dp = dp_start, cookiep = cookies; dp < dp_end;
1428 dp = (const struct dirent *)((const char *)dp + dp->d_reclen)) {
1429 off += dp->d_reclen;
1432 *ap->a_cookies = cookies;
1433 *ap->a_ncookies = ncookies;
1440 afs_vop_readlink(ap)
1441 struct vop_readlink_args /* {
1442 * struct vnode *a_vp;
1443 * struct uio *a_uio;
1444 * struct ucred *a_cred;
1448 /* printf("readlink %x\n", ap->a_vp);*/
1450 error = afs_readlink(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred);
1455 extern int prtactive;
1458 afs_vop_inactive(ap)
1459 struct vop_inactive_args /* {
1460 * struct vnode *a_vp;
1464 register struct vnode *vp = ap->a_vp;
1466 if (prtactive && vp->v_usecount != 0)
1467 vprint("afs_vop_inactive(): pushing active", vp);
1470 afs_InactiveVCache(VTOAFS(vp), 0); /* decrs ref counts */
1472 #ifndef AFS_FBSD80_ENV
1473 MA_VOP_UNLOCK(vp, 0, ap->a_p);
1479 * struct vop_reclaim_args {
1480 * struct vnode *a_vp;
1484 afs_vop_reclaim(struct vop_reclaim_args *ap)
1486 /* copied from ../OBSD/osi_vnodeops.c:afs_nbsd_reclaim() */
1488 struct vnode *vp = ap->a_vp;
1489 struct vcache *avc = VTOAFS(vp);
1490 int haveGlock = ISAFS_GLOCK();
1491 int haveVlock = CheckLock(&afs_xvcache);
1496 ObtainWriteLock(&afs_xvcache, 901);
1497 #ifndef AFS_DISCON_ENV
1498 code = afs_FlushVCache(avc, &slept); /* tosses our stuff from vnode */
1500 /* reclaim the vnode and the in-memory vcache, but keep the on-disk vcache */
1501 code = afs_FlushVS(avc);
1504 ReleaseWriteLock(&afs_xvcache);
1509 * XXX Pretend it worked, to prevent panic on shutdown
1510 * Garrett, please fix - Jim Rees
1513 printf("afs_vop_reclaim: afs_FlushVCache failed code %d\n", code);
1514 #ifdef AFS_FBSD60_ENV
1516 vnode_destroy_vobject(vp);
1517 #ifndef AFS_FBSD70_ENV
1518 vfs_hash_remove(vp);
1526 #ifndef AFS_FBSD60_ENV
1529 struct vop_bmap_args /* {
1530 * struct vnode *a_vp;
1532 * struct vnode **a_vpp;
1539 *ap->a_bnp = ap->a_bn * (PAGE_SIZE / DEV_BSIZE);
1542 *ap->a_vpp = ap->a_vp;
1544 if (ap->a_runp != NULL)
1546 if (ap->a_runb != NULL)
1554 afs_vop_strategy(ap)
1555 struct vop_strategy_args /* {
1561 error = afs_ustrategy(ap->a_bp, osi_cred());
1568 struct vop_print_args /* {
1569 * struct vnode *a_vp;
1572 register struct vnode *vp = ap->a_vp;
1573 register struct vcache *vc = VTOAFS(ap->a_vp);
1574 int s = vc->f.states;
1576 #ifdef AFS_FBSD50_ENV
1577 printf("tag %s, fid: %d.%x.%x.%x, opens %d, writers %d", vp->v_tag,
1578 (int)vc->f.fid.Cell, (u_int) vc->f.fid.Fid.Volume,
1579 (u_int) vc->f.fid.Fid.Vnode, (u_int) vc->f.fid.Fid.Unique, vc->opens,
1580 vc->execsOrWriters);
1582 printf("tag %d, fid: %ld.%x.%x.%x, opens %d, writers %d", vp->v_tag,
1583 vc->f.fid.Cell, (u_int) vc->f.fid.Fid.Volume,
1584 (u_int) vc->f.fid.Fid.Vnode, (u_int) vc->f.fid.Fid.Unique, vc->opens,
1585 vc->execsOrWriters);
1587 printf("\n states%s%s%s%s%s", (s & CStatd) ? " statd" : "",
1588 (s & CRO) ? " readonly" : "", (s & CDirty) ? " dirty" : "",
1589 (s & CMAPPED) ? " mapped" : "",
1590 (s & CVFlushed) ? " flush in progress" : "");
1596 * Advisory record locking support (fcntl() POSIX style)
1600 struct vop_advlock_args /* {
1601 * struct vnode *a_vp;
1604 * struct flock *a_fl;
1609 struct ucred cr = *osi_curcred();
1613 afs_lockctl(VTOAFS(ap->a_vp), ap->a_fl, ap->a_op, &cr, (int)ap->a_id);