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>
51 #include <afs/sysincludes.h> /* Standard vendor system headers */
52 #include <afsincludes.h> /* Afs-based standard headers */
53 #include <afs/afs_stats.h> /* statistics */
54 #include <sys/malloc.h>
55 #include <sys/namei.h>
56 #include <sys/unistd.h>
57 #include <vm/vm_page.h>
58 #include <vm/vm_object.h>
59 #include <vm/vm_pager.h>
60 #include <vm/vnode_pager.h>
61 extern int afs_pbuf_freecnt;
64 static vop_access_t afs_vop_access;
65 static vop_advlock_t afs_vop_advlock;
66 static vop_close_t afs_vop_close;
67 static vop_create_t afs_vop_create;
68 static vop_fsync_t afs_vop_fsync;
69 static vop_getattr_t afs_vop_getattr;
70 static vop_getpages_t afs_vop_getpages;
71 static vop_inactive_t afs_vop_inactive;
72 static vop_ioctl_t afs_vop_ioctl;
73 static vop_link_t afs_vop_link;
74 static vop_lookup_t afs_vop_lookup;
75 static vop_mkdir_t afs_vop_mkdir;
76 static vop_mknod_t afs_vop_mknod;
77 static vop_open_t afs_vop_open;
78 static vop_pathconf_t afs_vop_pathconf;
79 static vop_poll_t afs_vop_poll;
80 static vop_print_t afs_vop_print;
81 static vop_putpages_t afs_vop_putpages;
82 static vop_read_t afs_vop_read;
83 static vop_readdir_t afs_vop_readdir;
84 static vop_readlink_t afs_vop_readlink;
85 static vop_reclaim_t afs_vop_reclaim;
86 static vop_remove_t afs_vop_remove;
87 static vop_rename_t afs_vop_rename;
88 static vop_rmdir_t afs_vop_rmdir;
89 static vop_setattr_t afs_vop_setattr;
90 static vop_strategy_t afs_vop_strategy;
91 static vop_symlink_t afs_vop_symlink;
92 static vop_write_t afs_vop_write;
93 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD80_ENV)
94 static vop_lock1_t afs_vop_lock;
95 static vop_unlock_t afs_vop_unlock;
96 static vop_islocked_t afs_vop_islocked;
99 struct vop_vector afs_vnodeops = {
100 .vop_default = &default_vnodeops,
101 .vop_access = afs_vop_access,
102 .vop_advlock = afs_vop_advlock,
103 .vop_close = afs_vop_close,
104 .vop_create = afs_vop_create,
105 .vop_fsync = afs_vop_fsync,
106 .vop_getattr = afs_vop_getattr,
107 .vop_getpages = afs_vop_getpages,
108 .vop_inactive = afs_vop_inactive,
109 .vop_ioctl = afs_vop_ioctl,
110 #if !defined(AFS_FBSD80_ENV)
111 /* removed at least temporarily (NFSv4 flux) */
112 .vop_lease = VOP_NULL,
114 .vop_link = afs_vop_link,
115 .vop_lookup = afs_vop_lookup,
116 .vop_mkdir = afs_vop_mkdir,
117 .vop_mknod = afs_vop_mknod,
118 .vop_open = afs_vop_open,
119 .vop_pathconf = afs_vop_pathconf,
120 .vop_poll = afs_vop_poll,
121 .vop_print = afs_vop_print,
122 .vop_putpages = afs_vop_putpages,
123 .vop_read = afs_vop_read,
124 .vop_readdir = afs_vop_readdir,
125 .vop_readlink = afs_vop_readlink,
126 .vop_reclaim = afs_vop_reclaim,
127 .vop_remove = afs_vop_remove,
128 .vop_rename = afs_vop_rename,
129 .vop_rmdir = afs_vop_rmdir,
130 .vop_setattr = afs_vop_setattr,
131 .vop_strategy = afs_vop_strategy,
132 .vop_symlink = afs_vop_symlink,
133 .vop_write = afs_vop_write,
134 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD80_ENV)
135 .vop_lock1 = afs_vop_lock,
136 .vop_unlock = afs_vop_unlock,
137 .vop_islocked = afs_vop_islocked,
141 #else /* AFS_FBSD60_ENV */
143 int afs_vop_lookup(struct vop_lookup_args *);
144 int afs_vop_create(struct vop_create_args *);
145 int afs_vop_mknod(struct vop_mknod_args *);
146 int afs_vop_open(struct vop_open_args *);
147 int afs_vop_close(struct vop_close_args *);
148 int afs_vop_access(struct vop_access_args *);
149 int afs_vop_getattr(struct vop_getattr_args *);
150 int afs_vop_setattr(struct vop_setattr_args *);
151 int afs_vop_read(struct vop_read_args *);
152 int afs_vop_write(struct vop_write_args *);
153 int afs_vop_getpages(struct vop_getpages_args *);
154 int afs_vop_putpages(struct vop_putpages_args *);
155 int afs_vop_ioctl(struct vop_ioctl_args *);
156 static int afs_vop_pathconf(struct vop_pathconf_args *);
157 int afs_vop_poll(struct vop_poll_args *);
158 int afs_vop_fsync(struct vop_fsync_args *);
159 int afs_vop_remove(struct vop_remove_args *);
160 int afs_vop_link(struct vop_link_args *);
161 int afs_vop_rename(struct vop_rename_args *);
162 int afs_vop_mkdir(struct vop_mkdir_args *);
163 int afs_vop_rmdir(struct vop_rmdir_args *);
164 int afs_vop_symlink(struct vop_symlink_args *);
165 int afs_vop_readdir(struct vop_readdir_args *);
166 int afs_vop_readlink(struct vop_readlink_args *);
167 int afs_vop_inactive(struct vop_inactive_args *);
168 int afs_vop_reclaim(struct vop_reclaim_args *);
169 int afs_vop_bmap(struct vop_bmap_args *);
170 int afs_vop_strategy(struct vop_strategy_args *);
171 int afs_vop_print(struct vop_print_args *);
172 int afs_vop_advlock(struct vop_advlock_args *);
176 /* Global vfs data structures for AFS. */
177 vop_t **afs_vnodeop_p;
178 struct vnodeopv_entry_desc afs_vnodeop_entries[] = {
179 {&vop_default_desc, (vop_t *) vop_defaultop},
180 {&vop_access_desc, (vop_t *) afs_vop_access}, /* access */
181 {&vop_advlock_desc, (vop_t *) afs_vop_advlock}, /* advlock */
182 {&vop_bmap_desc, (vop_t *) afs_vop_bmap}, /* bmap */
183 {&vop_close_desc, (vop_t *) afs_vop_close}, /* close */
184 {&vop_createvobject_desc, (vop_t *) vop_stdcreatevobject},
185 {&vop_destroyvobject_desc, (vop_t *) vop_stddestroyvobject},
186 {&vop_create_desc, (vop_t *) afs_vop_create}, /* create */
187 {&vop_fsync_desc, (vop_t *) afs_vop_fsync}, /* fsync */
188 {&vop_getattr_desc, (vop_t *) afs_vop_getattr}, /* getattr */
189 {&vop_getpages_desc, (vop_t *) afs_vop_getpages}, /* read */
190 {&vop_getvobject_desc, (vop_t *) vop_stdgetvobject},
191 {&vop_putpages_desc, (vop_t *) afs_vop_putpages}, /* write */
192 {&vop_inactive_desc, (vop_t *) afs_vop_inactive}, /* inactive */
193 {&vop_lease_desc, (vop_t *) vop_null},
194 {&vop_link_desc, (vop_t *) afs_vop_link}, /* link */
195 {&vop_lookup_desc, (vop_t *) afs_vop_lookup}, /* lookup */
196 {&vop_mkdir_desc, (vop_t *) afs_vop_mkdir}, /* mkdir */
197 {&vop_mknod_desc, (vop_t *) afs_vop_mknod}, /* mknod */
198 {&vop_open_desc, (vop_t *) afs_vop_open}, /* open */
199 {&vop_pathconf_desc, (vop_t *) afs_vop_pathconf}, /* pathconf */
200 {&vop_poll_desc, (vop_t *) afs_vop_poll}, /* select */
201 {&vop_print_desc, (vop_t *) afs_vop_print}, /* print */
202 {&vop_read_desc, (vop_t *) afs_vop_read}, /* read */
203 {&vop_readdir_desc, (vop_t *) afs_vop_readdir}, /* readdir */
204 {&vop_readlink_desc, (vop_t *) afs_vop_readlink}, /* readlink */
205 {&vop_reclaim_desc, (vop_t *) afs_vop_reclaim}, /* reclaim */
206 {&vop_remove_desc, (vop_t *) afs_vop_remove}, /* remove */
207 {&vop_rename_desc, (vop_t *) afs_vop_rename}, /* rename */
208 {&vop_rmdir_desc, (vop_t *) afs_vop_rmdir}, /* rmdir */
209 {&vop_setattr_desc, (vop_t *) afs_vop_setattr}, /* setattr */
210 {&vop_strategy_desc, (vop_t *) afs_vop_strategy}, /* strategy */
211 {&vop_symlink_desc, (vop_t *) afs_vop_symlink}, /* symlink */
212 {&vop_write_desc, (vop_t *) afs_vop_write}, /* write */
213 {&vop_ioctl_desc, (vop_t *) afs_vop_ioctl}, /* XXX ioctl */
214 /*{ &vop_seek_desc, afs_vop_seek }, *//* seek */
215 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD90_ENV)
216 {&vop_lock1_desc, (vop_t *) afs_vop_lock}, /* lock */
217 {&vop_unlock_desc, (vop_t *) afs_vop_unlock}, /* unlock */
218 {&vop_islocked_desc, (vop_t *) afs_vop_islocked}, /* islocked */
222 struct vnodeopv_desc afs_vnodeop_opv_desc =
223 { &afs_vnodeop_p, afs_vnodeop_entries };
224 #endif /* AFS_FBSD60_ENV */
227 struct componentname *cnp = ap->a_cnp; \
229 MALLOC(name, char *, cnp->cn_namelen+1, M_TEMP, M_WAITOK); \
230 memcpy(name, cnp->cn_nameptr, cnp->cn_namelen); \
231 name[cnp->cn_namelen] = '\0'
233 #define DROPNAME() FREE(name, M_TEMP)
235 #if defined(AFS_FBSD80_ENV)
236 #define ma_vn_lock(vp, flags, p) (vn_lock(vp, flags))
237 #define MA_VOP_LOCK(vp, flags, p) (VOP_LOCK(vp, flags))
238 #define MA_VOP_UNLOCK(vp, flags, p) (VOP_UNLOCK(vp, flags))
240 #define ma_vn_lock(vp, flags, p) (vn_lock(vp, flags, p))
241 #define MA_VOP_LOCK(vp, flags, p) (VOP_LOCK(vp, flags, p))
242 #define MA_VOP_UNLOCK(vp, flags, p) (VOP_UNLOCK(vp, flags, p))
245 #ifdef AFS_FBSD70_ENV
246 #ifndef AFS_FBSD80_ENV
247 /* From kern_lock.c */
248 #define COUNT(td, x) if ((td)) (td)->td_locks += (x)
249 #define LK_ALL (LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE | \
250 LK_SHARE_NONZERO | LK_WAIT_NONZERO)
253 sharelock(struct thread *td, struct lock *lkp, int incr) {
254 lkp->lk_flags |= LK_SHARE_NONZERO;
255 lkp->lk_sharecount += incr;
261 * Standard lock, unlock and islocked functions.
265 struct vop_lock1_args /* {
273 struct vnode *vp = ap->a_vp;
274 struct lock *lkp = vp->v_vnlock;
276 #if 0 && defined(AFS_FBSD80_ENV) && !defined(UKERNEL)
277 afs_warn("afs_vop_lock: tid %d pid %d \"%s\"\n", curthread->td_tid,
278 curthread->td_proc->p_pid, curthread->td_name);
282 #ifdef AFS_FBSD80_ENV
283 return (_lockmgr_args(lkp, ap->a_flags, VI_MTX(vp),
284 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT,
285 ap->a_file, ap->a_line));
287 return (_lockmgr(lkp, ap->a_flags, VI_MTX(vp), ap->a_td, ap->a_file, ap->a_line));
294 struct vop_unlock_args /* {
300 struct vnode *vp = ap->a_vp;
301 struct lock *lkp = vp->v_vnlock;
303 #ifdef AFS_FBSD80_ENV
306 op = ((ap->a_flags) | LK_RELEASE) & LK_TYPE_MASK;
307 int glocked = ISAFS_GLOCK();
310 if ((op & (op - 1)) != 0) {
311 afs_warn("afs_vop_unlock: Shit.\n");
314 code = lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp));
320 /* possibly in current code path where this
321 * forces trace, we should have had a (shared? not
322 * necessarily, see _lockmgr in kern_lock.c) lock
323 * and that's the real bug. but.
326 if ((lkp->lk_exclusivecount == 0) &&
327 (!(lkp->lk_flags & LK_SHARE_NONZERO))) {
328 sharelock(ap->a_td, lkp, 1);
331 return (lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp),
339 struct vop_islocked_args /* {
341 struct thread *a_td; (not in 80)
344 #ifdef AFS_FBSD80_ENV
345 return (lockstatus(ap->a_vp->v_vnlock));
347 return (lockstatus(ap->a_vp->v_vnlock, ap->a_td));
353 * Mosty copied from sys/ufs/ufs/ufs_vnops.c:ufs_pathconf().
354 * We should know the correct answers to these questions with
355 * respect to the AFS protocol (which may differ from the UFS
356 * values) but for the moment this will do.
359 afs_vop_pathconf(struct vop_pathconf_args *ap)
364 switch (ap->a_name) {
366 *ap->a_retval = LINK_MAX;
369 *ap->a_retval = NAME_MAX;
372 *ap->a_retval = PATH_MAX;
375 *ap->a_retval = PIPE_BUF;
377 case _PC_CHOWN_RESTRICTED:
383 #ifdef _PC_ACL_EXTENDED
384 case _PC_ACL_EXTENDED:
387 case _PC_ACL_PATH_MAX:
391 #ifdef _PC_MAC_PRESENT
392 case _PC_MAC_PRESENT:
398 /* _PC_ASYNC_IO should have been handled by upper layers. */
399 KASSERT(0, ("_PC_ASYNC_IO should not get here"));
409 #ifdef _PC_ALLOC_SIZE_MIN
410 case _PC_ALLOC_SIZE_MIN:
411 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
414 #ifdef _PC_FILESIZEBITS
415 case _PC_FILESIZEBITS:
416 *ap->a_retval = 32; /* XXX */
419 #ifdef _PC_REC_INCR_XFER_SIZE
420 case _PC_REC_INCR_XFER_SIZE:
421 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
423 case _PC_REC_MAX_XFER_SIZE:
424 *ap->a_retval = -1; /* means ``unlimited'' */
426 case _PC_REC_MIN_XFER_SIZE:
427 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
429 case _PC_REC_XFER_ALIGN:
430 *ap->a_retval = PAGE_SIZE;
433 #ifdef _PC_SYMLINK_MAX
434 case _PC_SYMLINK_MAX:
435 *ap->a_retval = MAXPATHLEN;
447 struct vop_lookup_args /* {
448 * struct vnodeop_desc * a_desc;
449 * struct vnode *a_dvp;
450 * struct vnode **a_vpp;
451 * struct componentname *a_cnp;
456 struct vnode *vp, *dvp;
457 register int flags = ap->a_cnp->cn_flags;
458 int lockparent; /* 1 => lockparent flag is set */
459 int wantparent; /* 1 => wantparent or lockparent flag */
460 struct thread *p = ap->a_cnp->cn_thread;
463 if (dvp->v_type != VDIR) {
464 #ifndef AFS_FBSD70_ENV
470 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT))
475 lockparent = flags & LOCKPARENT;
476 wantparent = flags & (LOCKPARENT | WANTPARENT);
478 #ifdef AFS_FBSD80_ENV
479 cnp->cn_flags |= MPSAFE; /* steel */
482 #ifndef AFS_FBSD70_ENV
483 if (flags & ISDOTDOT)
484 VOP_UNLOCK(dvp, 0, p);
488 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
492 if (flags & ISDOTDOT)
493 MA_VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p);
494 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME)
495 && (flags & ISLASTCN) && error == ENOENT)
497 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
498 cnp->cn_flags |= SAVENAME;
503 vp = AFSTOV(vcp); /* always get a node if no error */
505 /* The parent directory comes in locked. We unlock it on return
506 * unless the caller wants it left locked.
507 * we also always return the vnode locked. */
509 if (flags & ISDOTDOT) {
510 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
511 /* always return the child locked */
512 if (lockparent && (flags & ISLASTCN)
513 && (error = ma_vn_lock(dvp, LK_EXCLUSIVE, p))) {
518 } else if (vp == dvp) {
519 /* they're the same; afs_lookup() already ref'ed the leaf.
520 * It came in locked, so we don't need to ref OR lock it */
522 if (!lockparent || !(flags & ISLASTCN)) {
523 #ifndef AFS_FBSD70_ENV /* 6 too? */
524 MA_VOP_UNLOCK(dvp, 0, p); /* done with parent. */
527 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
528 /* always return the child locked */
532 if ((cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN))
533 || (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)))
534 cnp->cn_flags |= SAVENAME;
542 struct vop_create_args /* {
543 * struct vnode *a_dvp;
544 * struct vnode **a_vpp;
545 * struct componentname *a_cnp;
546 * struct vattr *a_vap;
551 register struct vnode *dvp = ap->a_dvp;
552 struct thread *p = ap->a_cnp->cn_thread;
557 afs_create(VTOAFS(dvp), name, ap->a_vap,
558 ap->a_vap->va_vaflags & VA_EXCLUSIVE ? EXCL : NONEXCL,
559 ap->a_vap->va_mode, &vcp, cnp->cn_cred);
567 *ap->a_vpp = AFSTOV(vcp);
568 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
578 struct vop_mknod_args /* {
579 * struct vnode *a_dvp;
580 * struct vnode **a_vpp;
581 * struct componentname *a_cnp;
582 * struct vattr *a_vap;
590 validate_vops(struct vnode *vp, int after)
593 struct vnodeopv_entry_desc *this;
594 for (this = afs_vnodeop_entries; this->opve_op; this++) {
595 if (vp->v_op[this->opve_op->vdesc_offset] != this->opve_impl) {
597 printf("v_op %d ", after);
601 printf("For oper %d (%s), func is %p, not %p",
602 this->opve_op->vdesc_offset, this->opve_op->vdesc_name,
603 vp->v_op[this->opve_op->vdesc_offset], this->opve_impl);
611 struct vop_open_args /* {
612 * struct vnode *a_vp;
614 * struct ucred *a_cred;
615 * struct thread *a_td;
620 struct vcache *vc = VTOAFS(ap->a_vp);
623 error = afs_open(&vc, ap->a_mode, ap->a_cred);
625 if (AFSTOV(vc) != ap->a_vp)
626 panic("AFS open changed vnode!");
629 #ifdef AFS_FBSD60_ENV
630 vnode_create_vobject(ap->a_vp, vc->f.m.Length, ap->a_td);
632 osi_FlushPages(vc, ap->a_cred);
638 struct vop_close_args /* {
639 * struct vnode *a_vp;
641 * struct ucred *a_cred;
642 * struct thread *a_td;
646 struct vcache *avc = VTOAFS(ap->a_vp);
649 code = afs_close(avc, ap->a_fflag, ap->a_cred);
651 code = afs_close(avc, ap->a_fflag, afs_osi_credp);
652 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
659 struct vop_access_args /* {
660 * struct vnode *a_vp;
661 * accmode_t a_accmode;
662 * struct ucred *a_cred;
663 * struct thread *a_td;
668 #if defined(AFS_FBSD80_ENV)
669 code = afs_access(VTOAFS(ap->a_vp), ap->a_accmode, ap->a_cred);
671 code = afs_access(VTOAFS(ap->a_vp), ap->a_mode, ap->a_cred);
679 struct vop_getattr_args /* {
680 * struct vnode *a_vp;
681 * struct vattr *a_vap;
682 * struct ucred *a_cred;
687 code = afs_getattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
694 struct vop_setattr_args /* {
695 * struct vnode *a_vp;
696 * struct vattr *a_vap;
697 * struct ucred *a_cred;
702 code = afs_setattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
709 struct vop_read_args /* {
710 * struct vnode *a_vp;
713 * struct ucred *a_cred;
718 struct vcache *avc = VTOAFS(ap->a_vp);
720 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
721 code = afs_read(avc, ap->a_uio, ap->a_cred, 0, 0, 0);
726 /* struct vop_getpages_args {
727 * struct vnode *a_vp;
731 * vm_oofset_t a_offset;
735 afs_vop_getpages(struct vop_getpages_args *ap)
738 int i, nextoff, size, toff, npages;
749 if ((object = vp->v_object) == NULL) {
750 printf("afs_getpages: called with non-merged cache vnode??\n");
751 return VM_PAGER_ERROR;
753 npages = btoc(ap->a_count);
755 * If the requested page is partially valid, just return it and
756 * allow the pager to zero-out the blanks. Partially valid pages
757 * can only occur at the file EOF.
761 vm_page_t m = ap->a_m[ap->a_reqpage];
763 VM_OBJECT_LOCK(object);
764 vm_page_lock_queues();
766 /* handled by vm_fault now */
767 /* vm_page_zero_invalid(m, TRUE); */
768 for (i = 0; i < npages; ++i) {
769 if (i != ap->a_reqpage)
770 vm_page_free(ap->a_m[i]);
772 vm_page_unlock_queues();
773 VM_OBJECT_UNLOCK(object);
776 vm_page_unlock_queues();
777 VM_OBJECT_UNLOCK(object);
779 bp = getpbuf(&afs_pbuf_freecnt);
781 kva = (vm_offset_t) bp->b_data;
782 pmap_qenter(kva, ap->a_m, npages);
784 cnt.v_vnodepgsin += npages;
786 iov.iov_base = (caddr_t) kva;
787 iov.iov_len = ap->a_count;
790 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
791 uio.uio_resid = ap->a_count;
792 uio.uio_segflg = UIO_SYSSPACE;
793 uio.uio_rw = UIO_READ;
794 uio.uio_td = curthread;
797 osi_FlushPages(avc, osi_curcred()); /* hold bozon lock, but not basic vnode lock */
798 code = afs_read(avc, &uio, osi_curcred(), 0, 0, 0);
800 pmap_qremove(kva, npages);
802 relpbuf(bp, &afs_pbuf_freecnt);
804 if (code && (uio.uio_resid == ap->a_count)) {
805 VM_OBJECT_LOCK(object);
806 vm_page_lock_queues();
807 for (i = 0; i < npages; ++i) {
808 if (i != ap->a_reqpage)
809 vm_page_free(ap->a_m[i]);
811 vm_page_unlock_queues();
812 VM_OBJECT_UNLOCK(object);
813 return VM_PAGER_ERROR;
816 size = ap->a_count - uio.uio_resid;
817 VM_OBJECT_LOCK(object);
818 vm_page_lock_queues();
819 for (i = 0, toff = 0; i < npages; i++, toff = nextoff) {
821 nextoff = toff + PAGE_SIZE;
824 m->flags &= ~PG_ZERO;
826 if (nextoff <= size) {
828 * Read operation filled an entire page
830 m->valid = VM_PAGE_BITS_ALL;
832 } else if (size > toff) {
834 * Read operation filled a partial page.
837 vm_page_set_validclean(m, 0, size - toff);
838 /* handled by vm_fault now */
839 /* vm_page_zero_invalid(m, TRUE); */
842 if (i != ap->a_reqpage) {
844 * Whether or not to leave the page activated is up in
845 * the air, but we should put the page on a page queue
846 * somewhere (it already is in the object). Result:
847 * It appears that emperical results show that
848 * deactivating pages is best.
852 * Just in case someone was asking for this page we
853 * now tell them that it is ok to use.
856 #if defined(AFS_FBSD70_ENV)
857 if (m->oflags & VPO_WANTED)
859 if (m->flags & PG_WANTED)
863 vm_page_deactivate(m);
870 vm_page_unlock_queues();
871 VM_OBJECT_UNLOCK(object);
877 struct vop_write_args /* {
878 * struct vnode *a_vp;
881 * struct ucred *a_cred;
885 struct vcache *avc = VTOAFS(ap->a_vp);
887 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
889 afs_write(VTOAFS(ap->a_vp), ap->a_uio, ap->a_ioflag, ap->a_cred, 0);
895 * struct vop_putpages_args {
896 * struct vnode *a_vp;
901 * vm_oofset_t a_offset;
905 * All of the pages passed to us in ap->a_m[] are already marked as busy,
906 * so there is no additional locking required to set their flags. -GAW
909 afs_vop_putpages(struct vop_putpages_args *ap)
912 int i, size, npages, sync;
922 /* Perhaps these two checks should just be KASSERTs instead... */
923 if (vp->v_object == NULL) {
924 printf("afs_putpages: called with non-merged cache vnode??\n");
925 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
927 if (vType(avc) != VREG) {
928 printf("afs_putpages: not VREG");
929 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
931 npages = btoc(ap->a_count);
932 for (i = 0; i < npages; i++)
933 ap->a_rtvals[i] = VM_PAGER_AGAIN;
934 bp = getpbuf(&afs_pbuf_freecnt);
936 kva = (vm_offset_t) bp->b_data;
937 pmap_qenter(kva, ap->a_m, npages);
939 cnt.v_vnodepgsout += ap->a_count;
941 iov.iov_base = (caddr_t) kva;
942 iov.iov_len = ap->a_count;
945 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
946 uio.uio_resid = ap->a_count;
947 uio.uio_segflg = UIO_SYSSPACE;
948 uio.uio_rw = UIO_WRITE;
949 uio.uio_td = curthread;
951 if (ap->a_sync & VM_PAGER_PUT_SYNC)
953 /*if (ap->a_sync & VM_PAGER_PUT_INVAL)
954 * sync |= IO_INVAL; */
957 code = afs_write(avc, &uio, sync, osi_curcred(), 0);
960 pmap_qremove(kva, npages);
961 relpbuf(bp, &afs_pbuf_freecnt);
964 size = ap->a_count - uio.uio_resid;
965 for (i = 0; i < round_page(size) / PAGE_SIZE; i++) {
966 ap->a_rtvals[i] = VM_PAGER_OK;
967 vm_page_undirty(ap->a_m[i]);
970 return ap->a_rtvals[0];
975 struct vop_ioctl_args /* {
976 * struct vnode *a_vp;
980 * struct ucred *a_cred;
981 * struct thread *a_td;
984 struct vcache *tvc = VTOAFS(ap->a_vp);
987 /* in case we ever get in here... */
989 AFS_STATCNT(afs_ioctl);
990 if (((ap->a_command >> 8) & 0xff) == 'V') {
991 /* This is a VICEIOCTL call */
993 error = HandleIoctl(tvc, ap->a_command, ap->a_data);
997 /* No-op call; just return. */
1005 struct vop_poll_args /* {
1006 * struct vnode *a_vp;
1008 * struct ucred *a_cred;
1009 * struct thread *td;
1013 * We should really check to see if I/O is possible.
1021 * NB Currently unsupported.
1026 struct vop_mmap_args /* {
1027 * struct vnode *a_vp;
1029 * struct ucred *a_cred;
1030 * struct thread *td;
1038 struct vop_fsync_args /* {
1039 * struct vnode *a_vp;
1041 * struct thread *td;
1045 register struct vnode *vp = ap->a_vp;
1048 /*vflushbuf(vp, wait); */
1049 #ifdef AFS_FBSD60_ENV
1050 error = afs_fsync(VTOAFS(vp), ap->a_td->td_ucred);
1053 error = afs_fsync(VTOAFS(vp), ap->a_cred);
1055 error = afs_fsync(VTOAFS(vp), afs_osi_credp);
1063 struct vop_remove_args /* {
1064 * struct vnode *a_dvp;
1065 * struct vnode *a_vp;
1066 * struct componentname *a_cnp;
1070 register struct vnode *vp = ap->a_vp;
1071 register struct vnode *dvp = ap->a_dvp;
1075 error = afs_remove(VTOAFS(dvp), name, cnp->cn_cred);
1084 struct vop_link_args /* {
1085 * struct vnode *a_vp;
1086 * struct vnode *a_tdvp;
1087 * struct componentname *a_cnp;
1091 register struct vnode *dvp = ap->a_tdvp;
1092 register struct vnode *vp = ap->a_vp;
1093 struct thread *p = ap->a_cnp->cn_thread;
1096 if (dvp->v_mount != vp->v_mount) {
1100 if (vp->v_type == VDIR) {
1104 if ((error = ma_vn_lock(vp, LK_EXCLUSIVE, p)) != 0) {
1108 error = afs_link(VTOAFS(vp), VTOAFS(dvp), name, cnp->cn_cred);
1111 MA_VOP_UNLOCK(vp, 0, p);
1119 struct vop_rename_args /* {
1120 * struct vnode *a_fdvp;
1121 * struct vnode *a_fvp;
1122 * struct componentname *a_fcnp;
1123 * struct vnode *a_tdvp;
1124 * struct vnode *a_tvp;
1125 * struct componentname *a_tcnp;
1129 struct componentname *fcnp = ap->a_fcnp;
1131 struct componentname *tcnp = ap->a_tcnp;
1133 struct vnode *tvp = ap->a_tvp;
1134 register struct vnode *tdvp = ap->a_tdvp;
1135 struct vnode *fvp = ap->a_fvp;
1136 register struct vnode *fdvp = ap->a_fdvp;
1137 struct thread *p = fcnp->cn_thread;
1140 * Check for cross-device rename.
1142 if ((fvp->v_mount != tdvp->v_mount)
1143 || (tvp && (fvp->v_mount != tvp->v_mount))) {
1157 * if fvp == tvp, we're just removing one name of a pair of
1158 * directory entries for the same element. convert call into rename.
1159 ( (pinched from FreeBSD 4.4's ufs_rename())
1163 if (fvp->v_type == VDIR) {
1168 /* Release destination completely. */
1172 /* Delete source. */
1175 fcnp->cn_flags &= ~MODMASK;
1176 fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
1177 if ((fcnp->cn_flags & SAVESTART) == 0)
1178 panic("afs_rename: lost from startdir");
1179 fcnp->cn_nameiop = DELETE;
1181 error = relookup(fdvp, &fvp, fcnp);
1188 error = VOP_REMOVE(fdvp, fvp, fcnp);
1196 if ((error = ma_vn_lock(fvp, LK_EXCLUSIVE, p)) != 0)
1199 MALLOC(fname, char *, fcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1200 memcpy(fname, fcnp->cn_nameptr, fcnp->cn_namelen);
1201 fname[fcnp->cn_namelen] = '\0';
1202 MALLOC(tname, char *, tcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1203 memcpy(tname, tcnp->cn_nameptr, tcnp->cn_namelen);
1204 tname[tcnp->cn_namelen] = '\0';
1208 /* XXX use "from" or "to" creds? NFS uses "to" creds */
1210 afs_rename(VTOAFS(fdvp), fname, VTOAFS(tdvp), tname, tcnp->cn_cred);
1213 FREE(fname, M_TEMP);
1214 FREE(tname, M_TEMP);
1228 struct vop_mkdir_args /* {
1229 * struct vnode *a_dvp;
1230 * struct vnode **a_vpp;
1231 * struct componentname *a_cnp;
1232 * struct vattr *a_vap;
1235 register struct vnode *dvp = ap->a_dvp;
1236 register struct vattr *vap = ap->a_vap;
1239 struct thread *p = ap->a_cnp->cn_thread;
1243 if ((cnp->cn_flags & HASBUF) == 0)
1244 panic("afs_vop_mkdir: no name");
1247 error = afs_mkdir(VTOAFS(dvp), name, vap, &vcp, cnp->cn_cred);
1254 *ap->a_vpp = AFSTOV(vcp);
1255 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
1264 struct vop_rmdir_args /* {
1265 * struct vnode *a_dvp;
1266 * struct vnode *a_vp;
1267 * struct componentname *a_cnp;
1271 register struct vnode *dvp = ap->a_dvp;
1275 error = afs_rmdir(VTOAFS(dvp), name, cnp->cn_cred);
1281 /* struct vop_symlink_args {
1282 * struct vnode *a_dvp;
1283 * struct vnode **a_vpp;
1284 * struct componentname *a_cnp;
1285 * struct vattr *a_vap;
1290 afs_vop_symlink(struct vop_symlink_args *ap)
1293 struct vnode *newvp;
1304 afs_symlink(VTOAFS(dvp), name, ap->a_vap, ap->a_target, cnp->cn_cred);
1306 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
1308 newvp = AFSTOV(vcp);
1309 ma_vn_lock(newvp, LK_EXCLUSIVE | LK_RETRY, cnp->cn_thread);
1314 *(ap->a_vpp) = newvp;
1320 struct vop_readdir_args /* {
1321 * struct vnode *a_vp;
1322 * struct uio *a_uio;
1323 * struct ucred *a_cred;
1325 * u_long *a_cookies;
1331 /* printf("readdir %x cookies %x ncookies %d\n", ap->a_vp, ap->a_cookies,
1333 off = ap->a_uio->uio_offset;
1336 afs_readdir(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred, ap->a_eofflag);
1338 if (!error && ap->a_ncookies != NULL) {
1339 struct uio *uio = ap->a_uio;
1340 const struct dirent *dp, *dp_start, *dp_end;
1342 u_long *cookies, *cookiep;
1344 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
1345 panic("afs_readdir: burned cookies");
1346 dp = (const struct dirent *)
1347 ((const char *)uio->uio_iov->iov_base - (uio->uio_offset - off));
1349 dp_end = (const struct dirent *)uio->uio_iov->iov_base;
1350 for (dp_start = dp, ncookies = 0; dp < dp_end;
1351 dp = (const struct dirent *)((const char *)dp + dp->d_reclen))
1354 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP,
1356 for (dp = dp_start, cookiep = cookies; dp < dp_end;
1357 dp = (const struct dirent *)((const char *)dp + dp->d_reclen)) {
1358 off += dp->d_reclen;
1361 *ap->a_cookies = cookies;
1362 *ap->a_ncookies = ncookies;
1369 afs_vop_readlink(ap)
1370 struct vop_readlink_args /* {
1371 * struct vnode *a_vp;
1372 * struct uio *a_uio;
1373 * struct ucred *a_cred;
1377 /* printf("readlink %x\n", ap->a_vp);*/
1379 error = afs_readlink(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred);
1384 extern int prtactive;
1387 afs_vop_inactive(ap)
1388 struct vop_inactive_args /* {
1389 * struct vnode *a_vp;
1390 * struct thread *td;
1393 register struct vnode *vp = ap->a_vp;
1395 if (prtactive && vp->v_usecount != 0)
1396 vprint("afs_vop_inactive(): pushing active", vp);
1399 afs_InactiveVCache(VTOAFS(vp), 0); /* decrs ref counts */
1401 #ifndef AFS_FBSD60_ENV
1402 MA_VOP_UNLOCK(vp, 0, ap->a_td);
1408 * struct vop_reclaim_args {
1409 * struct vnode *a_vp;
1413 afs_vop_reclaim(struct vop_reclaim_args *ap)
1415 /* copied from ../OBSD/osi_vnodeops.c:afs_nbsd_reclaim() */
1417 struct vnode *vp = ap->a_vp;
1418 struct vcache *avc = VTOAFS(vp);
1419 int haveGlock = ISAFS_GLOCK();
1420 int haveVlock = CheckLock(&afs_xvcache);
1425 ObtainWriteLock(&afs_xvcache, 901);
1426 #ifndef AFS_DISCON_ENV
1427 code = afs_FlushVCache(avc, &slept); /* tosses our stuff from vnode */
1429 /* reclaim the vnode and the in-memory vcache, but keep the on-disk vcache */
1430 code = afs_FlushVS(avc);
1433 ReleaseWriteLock(&afs_xvcache);
1438 * XXX Pretend it worked, to prevent panic on shutdown
1439 * Garrett, please fix - Jim Rees
1442 printf("afs_vop_reclaim: afs_FlushVCache failed code %d vnode\n", code);
1446 /* basically, it must not fail */
1447 vnode_destroy_vobject(vp);
1453 #ifndef AFS_FBSD60_ENV
1456 struct vop_bmap_args /* {
1457 * struct vnode *a_vp;
1459 * struct vnode **a_vpp;
1466 *ap->a_bnp = ap->a_bn * (PAGE_SIZE / DEV_BSIZE);
1469 *ap->a_vpp = ap->a_vp;
1471 if (ap->a_runp != NULL)
1473 if (ap->a_runb != NULL)
1481 afs_vop_strategy(ap)
1482 struct vop_strategy_args /* {
1488 error = afs_ustrategy(ap->a_bp, osi_curcred());
1495 struct vop_print_args /* {
1496 * struct vnode *a_vp;
1499 register struct vnode *vp = ap->a_vp;
1500 register struct vcache *vc = VTOAFS(ap->a_vp);
1501 int s = vc->f.states;
1503 printf("tag %s, fid: %d.%d.%d.%d, opens %d, writers %d", vp->v_tag,
1504 (int)vc->f.fid.Cell, (u_int) vc->f.fid.Fid.Volume,
1505 (u_int) vc->f.fid.Fid.Vnode, (u_int) vc->f.fid.Fid.Unique, vc->opens,
1506 vc->execsOrWriters);
1507 printf("\n states%s%s%s%s%s", (s & CStatd) ? " statd" : "",
1508 (s & CRO) ? " readonly" : "", (s & CDirty) ? " dirty" : "",
1509 (s & CMAPPED) ? " mapped" : "",
1510 (s & CVFlushed) ? " flush in progress" : "");
1516 * Advisory record locking support (fcntl() POSIX style)
1520 struct vop_advlock_args /* {
1521 * struct vnode *a_vp;
1524 * struct flock *a_fl;
1529 struct ucred cr = *osi_curcred();
1533 afs_lockctl(VTOAFS(ap->a_vp), ap->a_fl, ap->a_op, &cr, (int)ap->a_id);