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 #ifndef AFS_FBSD50_ENV
58 #include <vm/vm_zone.h>
60 #include <vm/vm_page.h>
61 #include <vm/vm_object.h>
62 #include <vm/vm_pager.h>
63 #include <vm/vnode_pager.h>
64 extern int afs_pbuf_freecnt;
67 static vop_access_t afs_vop_access;
68 static vop_advlock_t afs_vop_advlock;
69 static vop_close_t afs_vop_close;
70 static vop_create_t afs_vop_create;
71 static vop_fsync_t afs_vop_fsync;
72 static vop_getattr_t afs_vop_getattr;
73 static vop_getpages_t afs_vop_getpages;
74 static vop_inactive_t afs_vop_inactive;
75 static vop_ioctl_t afs_vop_ioctl;
76 static vop_link_t afs_vop_link;
77 static vop_lookup_t afs_vop_lookup;
78 static vop_mkdir_t afs_vop_mkdir;
79 static vop_mknod_t afs_vop_mknod;
80 static vop_open_t afs_vop_open;
81 static vop_pathconf_t afs_vop_pathconf;
82 static vop_poll_t afs_vop_poll;
83 static vop_print_t afs_vop_print;
84 static vop_putpages_t afs_vop_putpages;
85 static vop_read_t afs_vop_read;
86 static vop_readdir_t afs_vop_readdir;
87 static vop_readlink_t afs_vop_readlink;
88 static vop_reclaim_t afs_vop_reclaim;
89 static vop_remove_t afs_vop_remove;
90 static vop_rename_t afs_vop_rename;
91 static vop_rmdir_t afs_vop_rmdir;
92 static vop_setattr_t afs_vop_setattr;
93 static vop_strategy_t afs_vop_strategy;
94 static vop_symlink_t afs_vop_symlink;
95 static vop_write_t afs_vop_write;
96 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD80_ENV)
97 static vop_lock1_t afs_vop_lock;
98 static vop_unlock_t afs_vop_unlock;
99 static vop_islocked_t afs_vop_islocked;
102 struct vop_vector afs_vnodeops = {
103 .vop_default = &default_vnodeops,
104 .vop_access = afs_vop_access,
105 .vop_advlock = afs_vop_advlock,
106 .vop_close = afs_vop_close,
107 .vop_create = afs_vop_create,
108 .vop_fsync = afs_vop_fsync,
109 .vop_getattr = afs_vop_getattr,
110 .vop_getpages = afs_vop_getpages,
111 .vop_inactive = afs_vop_inactive,
112 .vop_ioctl = afs_vop_ioctl,
113 #if !defined(AFS_FBSD80_ENV)
114 /* removed at least temporarily (NFSv4 flux) */
115 .vop_lease = VOP_NULL,
117 .vop_link = afs_vop_link,
118 .vop_lookup = afs_vop_lookup,
119 .vop_mkdir = afs_vop_mkdir,
120 .vop_mknod = afs_vop_mknod,
121 .vop_open = afs_vop_open,
122 .vop_pathconf = afs_vop_pathconf,
123 .vop_poll = afs_vop_poll,
124 .vop_print = afs_vop_print,
125 .vop_putpages = afs_vop_putpages,
126 .vop_read = afs_vop_read,
127 .vop_readdir = afs_vop_readdir,
128 .vop_readlink = afs_vop_readlink,
129 .vop_reclaim = afs_vop_reclaim,
130 .vop_remove = afs_vop_remove,
131 .vop_rename = afs_vop_rename,
132 .vop_rmdir = afs_vop_rmdir,
133 .vop_setattr = afs_vop_setattr,
134 .vop_strategy = afs_vop_strategy,
135 .vop_symlink = afs_vop_symlink,
136 .vop_write = afs_vop_write,
137 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD80_ENV)
138 .vop_lock1 = afs_vop_lock,
139 .vop_unlock = afs_vop_unlock,
140 .vop_islocked = afs_vop_islocked,
144 #else /* AFS_FBSD60_ENV */
146 int afs_vop_lookup(struct vop_lookup_args *);
147 int afs_vop_create(struct vop_create_args *);
148 int afs_vop_mknod(struct vop_mknod_args *);
149 int afs_vop_open(struct vop_open_args *);
150 int afs_vop_close(struct vop_close_args *);
151 int afs_vop_access(struct vop_access_args *);
152 int afs_vop_getattr(struct vop_getattr_args *);
153 int afs_vop_setattr(struct vop_setattr_args *);
154 int afs_vop_read(struct vop_read_args *);
155 int afs_vop_write(struct vop_write_args *);
156 int afs_vop_getpages(struct vop_getpages_args *);
157 int afs_vop_putpages(struct vop_putpages_args *);
158 int afs_vop_ioctl(struct vop_ioctl_args *);
159 static int afs_vop_pathconf(struct vop_pathconf_args *);
160 int afs_vop_poll(struct vop_poll_args *);
161 #ifndef AFS_FBSD50_ENV
162 int afs_vop_mmap(struct vop_mmap_args *);
164 int afs_vop_fsync(struct vop_fsync_args *);
165 int afs_vop_remove(struct vop_remove_args *);
166 int afs_vop_link(struct vop_link_args *);
167 int afs_vop_rename(struct vop_rename_args *);
168 int afs_vop_mkdir(struct vop_mkdir_args *);
169 int afs_vop_rmdir(struct vop_rmdir_args *);
170 int afs_vop_symlink(struct vop_symlink_args *);
171 int afs_vop_readdir(struct vop_readdir_args *);
172 int afs_vop_readlink(struct vop_readlink_args *);
173 int afs_vop_inactive(struct vop_inactive_args *);
174 int afs_vop_reclaim(struct vop_reclaim_args *);
175 int afs_vop_bmap(struct vop_bmap_args *);
176 int afs_vop_strategy(struct vop_strategy_args *);
177 int afs_vop_print(struct vop_print_args *);
178 int afs_vop_advlock(struct vop_advlock_args *);
182 /* Global vfs data structures for AFS. */
183 vop_t **afs_vnodeop_p;
184 struct vnodeopv_entry_desc afs_vnodeop_entries[] = {
185 {&vop_default_desc, (vop_t *) vop_defaultop},
186 {&vop_access_desc, (vop_t *) afs_vop_access}, /* access */
187 {&vop_advlock_desc, (vop_t *) afs_vop_advlock}, /* advlock */
188 {&vop_bmap_desc, (vop_t *) afs_vop_bmap}, /* bmap */
189 #ifndef AFS_FBSD50_ENV
190 {&vop_bwrite_desc, (vop_t *) vop_stdbwrite},
192 {&vop_close_desc, (vop_t *) afs_vop_close}, /* close */
193 {&vop_createvobject_desc, (vop_t *) vop_stdcreatevobject},
194 {&vop_destroyvobject_desc, (vop_t *) vop_stddestroyvobject},
195 {&vop_create_desc, (vop_t *) afs_vop_create}, /* create */
196 {&vop_fsync_desc, (vop_t *) afs_vop_fsync}, /* fsync */
197 {&vop_getattr_desc, (vop_t *) afs_vop_getattr}, /* getattr */
198 {&vop_getpages_desc, (vop_t *) afs_vop_getpages}, /* read */
199 {&vop_getvobject_desc, (vop_t *) vop_stdgetvobject},
200 {&vop_putpages_desc, (vop_t *) afs_vop_putpages}, /* write */
201 {&vop_inactive_desc, (vop_t *) afs_vop_inactive}, /* inactive */
202 {&vop_lease_desc, (vop_t *) vop_null},
203 {&vop_link_desc, (vop_t *) afs_vop_link}, /* link */
204 {&vop_lookup_desc, (vop_t *) afs_vop_lookup}, /* lookup */
205 {&vop_mkdir_desc, (vop_t *) afs_vop_mkdir}, /* mkdir */
206 {&vop_mknod_desc, (vop_t *) afs_vop_mknod}, /* mknod */
207 #ifndef AFS_FBSD50_ENV
208 {&vop_mmap_desc, (vop_t *) afs_vop_mmap}, /* mmap */
210 {&vop_open_desc, (vop_t *) afs_vop_open}, /* open */
211 {&vop_pathconf_desc, (vop_t *) afs_vop_pathconf}, /* pathconf */
212 {&vop_poll_desc, (vop_t *) afs_vop_poll}, /* select */
213 {&vop_print_desc, (vop_t *) afs_vop_print}, /* print */
214 {&vop_read_desc, (vop_t *) afs_vop_read}, /* read */
215 {&vop_readdir_desc, (vop_t *) afs_vop_readdir}, /* readdir */
216 {&vop_readlink_desc, (vop_t *) afs_vop_readlink}, /* readlink */
217 {&vop_reclaim_desc, (vop_t *) afs_vop_reclaim}, /* reclaim */
218 {&vop_remove_desc, (vop_t *) afs_vop_remove}, /* remove */
219 {&vop_rename_desc, (vop_t *) afs_vop_rename}, /* rename */
220 {&vop_rmdir_desc, (vop_t *) afs_vop_rmdir}, /* rmdir */
221 {&vop_setattr_desc, (vop_t *) afs_vop_setattr}, /* setattr */
222 {&vop_strategy_desc, (vop_t *) afs_vop_strategy}, /* strategy */
223 {&vop_symlink_desc, (vop_t *) afs_vop_symlink}, /* symlink */
224 {&vop_write_desc, (vop_t *) afs_vop_write}, /* write */
225 {&vop_ioctl_desc, (vop_t *) afs_vop_ioctl}, /* XXX ioctl */
226 /*{ &vop_seek_desc, afs_vop_seek }, *//* seek */
227 #if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD90_ENV)
228 {&vop_lock1_desc, (vop_t *) afs_vop_lock}, /* lock */
229 {&vop_unlock_desc, (vop_t *) afs_vop_unlock}, /* unlock */
230 {&vop_islocked_desc, (vop_t *) afs_vop_islocked}, /* islocked */
234 struct vnodeopv_desc afs_vnodeop_opv_desc =
235 { &afs_vnodeop_p, afs_vnodeop_entries };
236 #endif /* AFS_FBSD60_ENV */
239 struct componentname *cnp = ap->a_cnp; \
241 MALLOC(name, char *, cnp->cn_namelen+1, M_TEMP, M_WAITOK); \
242 memcpy(name, cnp->cn_nameptr, cnp->cn_namelen); \
243 name[cnp->cn_namelen] = '\0'
245 #define DROPNAME() FREE(name, M_TEMP)
247 /* This is a bit of a cheat... */
248 #ifdef AFS_FBSD50_ENV
252 #if defined(AFS_FBSD80_ENV)
253 #define ma_vn_lock(vp, flags, p) (vn_lock(vp, flags))
254 #define MA_VOP_LOCK(vp, flags, p) (VOP_LOCK(vp, flags))
255 #define MA_VOP_UNLOCK(vp, flags, p) (VOP_UNLOCK(vp, flags))
257 #define ma_vn_lock(vp, flags, p) (vn_lock(vp, flags, p))
258 #define MA_VOP_LOCK(vp, flags, p) (VOP_LOCK(vp, flags, p))
259 #define MA_VOP_UNLOCK(vp, flags, p) (VOP_UNLOCK(vp, flags, p))
262 #ifdef AFS_FBSD70_ENV
263 #ifndef AFS_FBSD80_ENV
264 /* From kern_lock.c */
265 #define COUNT(td, x) if ((td)) (td)->td_locks += (x)
266 #define LK_ALL (LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE | \
267 LK_SHARE_NONZERO | LK_WAIT_NONZERO)
270 sharelock(struct thread *td, struct lock *lkp, int incr) {
271 lkp->lk_flags |= LK_SHARE_NONZERO;
272 lkp->lk_sharecount += incr;
278 * Standard lock, unlock and islocked functions.
282 struct vop_lock1_args /* {
290 struct vnode *vp = ap->a_vp;
291 struct lock *lkp = vp->v_vnlock;
293 #if 0 && defined(AFS_FBSD80_ENV) && !defined(UKERNEL)
294 afs_warn("afs_vop_lock: tid %d pid %d \"%s\"\n", curthread->td_tid,
295 curthread->td_proc->p_pid, curthread->td_name);
299 #ifdef AFS_FBSD80_ENV
300 return (_lockmgr_args(lkp, ap->a_flags, VI_MTX(vp),
301 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT,
302 ap->a_file, ap->a_line));
304 return (_lockmgr(lkp, ap->a_flags, VI_MTX(vp), ap->a_td, ap->a_file, ap->a_line));
311 struct vop_unlock_args /* {
317 struct vnode *vp = ap->a_vp;
318 struct lock *lkp = vp->v_vnlock;
320 #ifdef AFS_FBSD80_ENV
323 op = ((ap->a_flags) | LK_RELEASE) & LK_TYPE_MASK;
324 int glocked = ISAFS_GLOCK();
327 if ((op & (op - 1)) != 0) {
328 afs_warn("afs_vop_unlock: Shit.\n");
331 code = lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp));
337 /* possibly in current code path where this
338 * forces trace, we should have had a (shared? not
339 * necessarily, see _lockmgr in kern_lock.c) lock
340 * and that's the real bug. but.
343 if ((lkp->lk_exclusivecount == 0) &&
344 (!(lkp->lk_flags & LK_SHARE_NONZERO))) {
345 sharelock(ap->a_td, lkp, 1);
348 return (lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp),
356 struct vop_islocked_args /* {
358 struct thread *a_td; (not in 80)
361 #ifdef AFS_FBSD80_ENV
362 return (lockstatus(ap->a_vp->v_vnlock));
364 return (lockstatus(ap->a_vp->v_vnlock, ap->a_td));
370 * Mosty copied from sys/ufs/ufs/ufs_vnops.c:ufs_pathconf().
371 * We should know the correct answers to these questions with
372 * respect to the AFS protocol (which may differ from the UFS
373 * values) but for the moment this will do.
376 afs_vop_pathconf(struct vop_pathconf_args *ap)
381 switch (ap->a_name) {
383 *ap->a_retval = LINK_MAX;
386 *ap->a_retval = NAME_MAX;
389 *ap->a_retval = PATH_MAX;
392 *ap->a_retval = PIPE_BUF;
394 case _PC_CHOWN_RESTRICTED:
400 #ifdef _PC_ACL_EXTENDED
401 case _PC_ACL_EXTENDED:
404 case _PC_ACL_PATH_MAX:
408 #ifdef _PC_MAC_PRESENT
409 case _PC_MAC_PRESENT:
415 /* _PC_ASYNC_IO should have been handled by upper layers. */
416 KASSERT(0, ("_PC_ASYNC_IO should not get here"));
426 #ifdef _PC_ALLOC_SIZE_MIN
427 case _PC_ALLOC_SIZE_MIN:
428 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
431 #ifdef _PC_FILESIZEBITS
432 case _PC_FILESIZEBITS:
433 *ap->a_retval = 32; /* XXX */
436 #ifdef _PC_REC_INCR_XFER_SIZE
437 case _PC_REC_INCR_XFER_SIZE:
438 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
440 case _PC_REC_MAX_XFER_SIZE:
441 *ap->a_retval = -1; /* means ``unlimited'' */
443 case _PC_REC_MIN_XFER_SIZE:
444 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
446 case _PC_REC_XFER_ALIGN:
447 *ap->a_retval = PAGE_SIZE;
450 #ifdef _PC_SYMLINK_MAX
451 case _PC_SYMLINK_MAX:
452 *ap->a_retval = MAXPATHLEN;
464 struct vop_lookup_args /* {
465 * struct vnodeop_desc * a_desc;
466 * struct vnode *a_dvp;
467 * struct vnode **a_vpp;
468 * struct componentname *a_cnp;
473 struct vnode *vp, *dvp;
474 register int flags = ap->a_cnp->cn_flags;
475 int lockparent; /* 1 => lockparent flag is set */
476 int wantparent; /* 1 => wantparent or lockparent flag */
477 #ifdef AFS_FBSD50_ENV
478 struct thread *p = ap->a_cnp->cn_thread;
480 struct proc *p = ap->a_cnp->cn_proc;
484 if (dvp->v_type != VDIR) {
485 #ifndef AFS_FBSD70_ENV
491 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT))
496 lockparent = flags & LOCKPARENT;
497 wantparent = flags & (LOCKPARENT | WANTPARENT);
499 #ifdef AFS_FBSD80_ENV
500 cnp->cn_flags |= MPSAFE; /* steel */
503 #ifndef AFS_FBSD70_ENV
504 if (flags & ISDOTDOT)
505 VOP_UNLOCK(dvp, 0, p);
509 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
513 if (flags & ISDOTDOT)
514 MA_VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p);
515 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME)
516 && (flags & ISLASTCN) && error == ENOENT)
518 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
519 cnp->cn_flags |= SAVENAME;
524 vp = AFSTOV(vcp); /* always get a node if no error */
526 /* The parent directory comes in locked. We unlock it on return
527 * unless the caller wants it left locked.
528 * we also always return the vnode locked. */
530 if (flags & ISDOTDOT) {
531 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
532 /* always return the child locked */
533 if (lockparent && (flags & ISLASTCN)
534 && (error = ma_vn_lock(dvp, LK_EXCLUSIVE, p))) {
539 } else if (vp == dvp) {
540 /* they're the same; afs_lookup() already ref'ed the leaf.
541 * It came in locked, so we don't need to ref OR lock it */
543 if (!lockparent || !(flags & ISLASTCN)) {
544 #ifndef AFS_FBSD70_ENV /* 6 too? */
545 MA_VOP_UNLOCK(dvp, 0, p); /* done with parent. */
548 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
549 /* always return the child locked */
553 if ((cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN))
554 || (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)))
555 cnp->cn_flags |= SAVENAME;
563 struct vop_create_args /* {
564 * struct vnode *a_dvp;
565 * struct vnode **a_vpp;
566 * struct componentname *a_cnp;
567 * struct vattr *a_vap;
572 register struct vnode *dvp = ap->a_dvp;
573 #ifdef AFS_FBSD50_ENV
574 struct thread *p = ap->a_cnp->cn_thread;
576 struct proc *p = ap->a_cnp->cn_proc;
582 afs_create(VTOAFS(dvp), name, ap->a_vap,
583 ap->a_vap->va_vaflags & VA_EXCLUSIVE ? EXCL : NONEXCL,
584 ap->a_vap->va_mode, &vcp, cnp->cn_cred);
592 *ap->a_vpp = AFSTOV(vcp);
593 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
603 struct vop_mknod_args /* {
604 * struct vnode *a_dvp;
605 * struct vnode **a_vpp;
606 * struct componentname *a_cnp;
607 * struct vattr *a_vap;
615 validate_vops(struct vnode *vp, int after)
618 struct vnodeopv_entry_desc *this;
619 for (this = afs_vnodeop_entries; this->opve_op; this++) {
620 if (vp->v_op[this->opve_op->vdesc_offset] != this->opve_impl) {
622 printf("v_op %d ", after);
626 printf("For oper %d (%s), func is %p, not %p",
627 this->opve_op->vdesc_offset, this->opve_op->vdesc_name,
628 vp->v_op[this->opve_op->vdesc_offset], this->opve_impl);
636 struct vop_open_args /* {
637 * struct vnode *a_vp;
639 * struct ucred *a_cred;
644 struct vcache *vc = VTOAFS(ap->a_vp);
647 error = afs_open(&vc, ap->a_mode, ap->a_cred);
649 if (AFSTOV(vc) != ap->a_vp)
650 panic("AFS open changed vnode!");
653 #ifdef AFS_FBSD60_ENV
654 vnode_create_vobject(ap->a_vp, vc->f.m.Length, ap->a_td);
656 osi_FlushPages(vc, ap->a_cred);
662 struct vop_close_args /* {
663 * struct vnode *a_vp;
665 * struct ucred *a_cred;
670 struct vcache *avc = VTOAFS(ap->a_vp);
673 code = afs_close(avc, ap->a_fflag, ap->a_cred);
675 code = afs_close(avc, ap->a_fflag, afs_osi_credp);
676 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
683 struct vop_access_args /* {
684 * struct vnode *a_vp;
686 * struct ucred *a_cred;
692 #if defined(AFS_FBSD80_ENV)
693 code = afs_access(VTOAFS(ap->a_vp), ap->a_accmode, ap->a_cred);
695 code = afs_access(VTOAFS(ap->a_vp), ap->a_mode, ap->a_cred);
703 struct vop_getattr_args /* {
704 * struct vnode *a_vp;
705 * struct vattr *a_vap;
706 * struct ucred *a_cred;
712 code = afs_getattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
719 struct vop_setattr_args /* {
720 * struct vnode *a_vp;
721 * struct vattr *a_vap;
722 * struct ucred *a_cred;
728 code = afs_setattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
735 struct vop_read_args /* {
736 * struct vnode *a_vp;
739 * struct ucred *a_cred;
744 struct vcache *avc = VTOAFS(ap->a_vp);
746 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
747 code = afs_read(avc, ap->a_uio, ap->a_cred, 0, 0, 0);
752 /* struct vop_getpages_args {
753 * struct vnode *a_vp;
757 * vm_oofset_t a_offset;
761 afs_vop_getpages(struct vop_getpages_args *ap)
764 int i, nextoff, size, toff, npages;
773 #ifdef AFS_FBSD50_ENV
778 if ((object = vp->v_object) == NULL) {
779 printf("afs_getpages: called with non-merged cache vnode??\n");
780 return VM_PAGER_ERROR;
782 npages = btoc(ap->a_count);
784 * If the requested page is partially valid, just return it and
785 * allow the pager to zero-out the blanks. Partially valid pages
786 * can only occur at the file EOF.
790 vm_page_t m = ap->a_m[ap->a_reqpage];
792 #ifdef AFS_FBSD50_ENV
793 VM_OBJECT_LOCK(object);
794 vm_page_lock_queues();
797 /* handled by vm_fault now */
798 /* vm_page_zero_invalid(m, TRUE); */
799 for (i = 0; i < npages; ++i) {
800 if (i != ap->a_reqpage)
801 vm_page_free(ap->a_m[i]);
803 #ifdef AFS_FBSD50_ENV
804 vm_page_unlock_queues();
805 VM_OBJECT_UNLOCK(object);
809 #ifdef AFS_FBSD50_ENV
810 vm_page_unlock_queues();
811 VM_OBJECT_UNLOCK(object);
814 bp = getpbuf(&afs_pbuf_freecnt);
816 kva = (vm_offset_t) bp->b_data;
817 pmap_qenter(kva, ap->a_m, npages);
818 #ifdef AFS_FBSD50_ENV
820 cnt.v_vnodepgsin += npages;
823 iov.iov_base = (caddr_t) kva;
824 iov.iov_len = ap->a_count;
827 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
828 uio.uio_resid = ap->a_count;
829 uio.uio_segflg = UIO_SYSSPACE;
830 uio.uio_rw = UIO_READ;
831 #ifdef AFS_FBSD50_ENV
832 uio.uio_td = curthread;
834 uio.uio_procp = curproc;
838 osi_FlushPages(avc, osi_curcred()); /* hold bozon lock, but not basic vnode lock */
839 code = afs_read(avc, &uio, osi_curcred(), 0, 0, 0);
841 pmap_qremove(kva, npages);
843 relpbuf(bp, &afs_pbuf_freecnt);
845 if (code && (uio.uio_resid == ap->a_count)) {
846 #ifdef AFS_FBSD50_ENV
847 VM_OBJECT_LOCK(object);
848 vm_page_lock_queues();
850 for (i = 0; i < npages; ++i) {
851 if (i != ap->a_reqpage)
852 vm_page_free(ap->a_m[i]);
854 #ifdef AFS_FBSD50_ENV
855 vm_page_unlock_queues();
856 VM_OBJECT_UNLOCK(object);
858 return VM_PAGER_ERROR;
861 size = ap->a_count - uio.uio_resid;
862 #ifdef AFS_FBSD50_ENV
863 VM_OBJECT_LOCK(object);
864 vm_page_lock_queues();
866 for (i = 0, toff = 0; i < npages; i++, toff = nextoff) {
868 nextoff = toff + PAGE_SIZE;
871 m->flags &= ~PG_ZERO;
873 if (nextoff <= size) {
875 * Read operation filled an entire page
877 m->valid = VM_PAGE_BITS_ALL;
879 } else if (size > toff) {
881 * Read operation filled a partial page.
884 vm_page_set_validclean(m, 0, size - toff);
885 /* handled by vm_fault now */
886 /* vm_page_zero_invalid(m, TRUE); */
889 if (i != ap->a_reqpage) {
891 * Whether or not to leave the page activated is up in
892 * the air, but we should put the page on a page queue
893 * somewhere (it already is in the object). Result:
894 * It appears that emperical results show that
895 * deactivating pages is best.
899 * Just in case someone was asking for this page we
900 * now tell them that it is ok to use.
903 #if defined(AFS_FBSD70_ENV)
904 if (m->oflags & VPO_WANTED)
906 if (m->flags & PG_WANTED)
910 vm_page_deactivate(m);
917 #ifdef AFS_FBSD50_ENV
918 vm_page_unlock_queues();
919 VM_OBJECT_UNLOCK(object);
926 struct vop_write_args /* {
927 * struct vnode *a_vp;
930 * struct ucred *a_cred;
934 struct vcache *avc = VTOAFS(ap->a_vp);
936 osi_FlushPages(avc, ap->a_cred); /* hold bozon lock, but not basic vnode lock */
938 afs_write(VTOAFS(ap->a_vp), ap->a_uio, ap->a_ioflag, ap->a_cred, 0);
944 * struct vop_putpages_args {
945 * struct vnode *a_vp;
950 * vm_oofset_t a_offset;
954 * All of the pages passed to us in ap->a_m[] are already marked as busy,
955 * so there is no additional locking required to set their flags. -GAW
958 afs_vop_putpages(struct vop_putpages_args *ap)
961 int i, size, npages, sync;
969 #ifdef AFS_FBSD50_ENV
975 /* Perhaps these two checks should just be KASSERTs instead... */
976 if (vp->v_object == NULL) {
977 printf("afs_putpages: called with non-merged cache vnode??\n");
978 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
980 if (vType(avc) != VREG) {
981 printf("afs_putpages: not VREG");
982 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
984 npages = btoc(ap->a_count);
985 for (i = 0; i < npages; i++)
986 ap->a_rtvals[i] = VM_PAGER_AGAIN;
987 bp = getpbuf(&afs_pbuf_freecnt);
989 kva = (vm_offset_t) bp->b_data;
990 pmap_qenter(kva, ap->a_m, npages);
991 #ifdef AFS_FBSD50_ENV
993 cnt.v_vnodepgsout += ap->a_count;
996 iov.iov_base = (caddr_t) kva;
997 iov.iov_len = ap->a_count;
1000 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
1001 uio.uio_resid = ap->a_count;
1002 uio.uio_segflg = UIO_SYSSPACE;
1003 uio.uio_rw = UIO_WRITE;
1004 #ifdef AFS_FBSD50_ENV
1005 uio.uio_td = curthread;
1007 uio.uio_procp = curproc;
1010 if (ap->a_sync & VM_PAGER_PUT_SYNC)
1012 /*if (ap->a_sync & VM_PAGER_PUT_INVAL)
1013 * sync |= IO_INVAL; */
1016 code = afs_write(avc, &uio, sync, osi_curcred(), 0);
1019 pmap_qremove(kva, npages);
1020 relpbuf(bp, &afs_pbuf_freecnt);
1023 size = ap->a_count - uio.uio_resid;
1024 for (i = 0; i < round_page(size) / PAGE_SIZE; i++) {
1025 ap->a_rtvals[i] = VM_PAGER_OK;
1026 vm_page_undirty(ap->a_m[i]);
1029 return ap->a_rtvals[0];
1034 struct vop_ioctl_args /* {
1035 * struct vnode *a_vp;
1039 * struct ucred *a_cred;
1043 struct vcache *tvc = VTOAFS(ap->a_vp);
1046 /* in case we ever get in here... */
1048 AFS_STATCNT(afs_ioctl);
1049 if (((ap->a_command >> 8) & 0xff) == 'V') {
1050 /* This is a VICEIOCTL call */
1052 error = HandleIoctl(tvc, ap->a_command, ap->a_data);
1056 /* No-op call; just return. */
1064 struct vop_poll_args /* {
1065 * struct vnode *a_vp;
1067 * struct ucred *a_cred;
1072 * We should really check to see if I/O is possible.
1080 * NB Currently unsupported.
1085 struct vop_mmap_args /* {
1086 * struct vnode *a_vp;
1088 * struct ucred *a_cred;
1097 struct vop_fsync_args /* {
1098 * struct vnode *a_vp;
1099 * struct ucred *a_cred;
1105 register struct vnode *vp = ap->a_vp;
1108 /*vflushbuf(vp, wait); */
1109 #ifdef AFS_FBSD60_ENV
1110 error = afs_fsync(VTOAFS(vp), ap->a_td->td_ucred);
1113 error = afs_fsync(VTOAFS(vp), ap->a_cred);
1115 error = afs_fsync(VTOAFS(vp), afs_osi_credp);
1123 struct vop_remove_args /* {
1124 * struct vnode *a_dvp;
1125 * struct vnode *a_vp;
1126 * struct componentname *a_cnp;
1130 register struct vnode *vp = ap->a_vp;
1131 register struct vnode *dvp = ap->a_dvp;
1135 error = afs_remove(VTOAFS(dvp), name, cnp->cn_cred);
1144 struct vop_link_args /* {
1145 * struct vnode *a_vp;
1146 * struct vnode *a_tdvp;
1147 * struct componentname *a_cnp;
1151 register struct vnode *dvp = ap->a_tdvp;
1152 register struct vnode *vp = ap->a_vp;
1153 #ifdef AFS_FBSD50_ENV
1154 struct thread *p = ap->a_cnp->cn_thread;
1156 struct proc *p = ap->a_cnp->cn_proc;
1160 if (dvp->v_mount != vp->v_mount) {
1164 if (vp->v_type == VDIR) {
1168 if ((error = ma_vn_lock(vp, LK_EXCLUSIVE, p)) != 0) {
1172 error = afs_link(VTOAFS(vp), VTOAFS(dvp), name, cnp->cn_cred);
1175 MA_VOP_UNLOCK(vp, 0, p);
1183 struct vop_rename_args /* {
1184 * struct vnode *a_fdvp;
1185 * struct vnode *a_fvp;
1186 * struct componentname *a_fcnp;
1187 * struct vnode *a_tdvp;
1188 * struct vnode *a_tvp;
1189 * struct componentname *a_tcnp;
1193 struct componentname *fcnp = ap->a_fcnp;
1195 struct componentname *tcnp = ap->a_tcnp;
1197 struct vnode *tvp = ap->a_tvp;
1198 register struct vnode *tdvp = ap->a_tdvp;
1199 struct vnode *fvp = ap->a_fvp;
1200 register struct vnode *fdvp = ap->a_fdvp;
1201 #ifdef AFS_FBSD50_ENV
1202 struct thread *p = fcnp->cn_thread;
1204 struct proc *p = fcnp->cn_proc;
1208 * Check for cross-device rename.
1210 if ((fvp->v_mount != tdvp->v_mount)
1211 || (tvp && (fvp->v_mount != tvp->v_mount))) {
1225 * if fvp == tvp, we're just removing one name of a pair of
1226 * directory entries for the same element. convert call into rename.
1227 ( (pinched from FreeBSD 4.4's ufs_rename())
1231 if (fvp->v_type == VDIR) {
1236 /* Release destination completely. */
1240 /* Delete source. */
1243 fcnp->cn_flags &= ~MODMASK;
1244 fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
1245 if ((fcnp->cn_flags & SAVESTART) == 0)
1246 panic("afs_rename: lost from startdir");
1247 fcnp->cn_nameiop = DELETE;
1249 error = relookup(fdvp, &fvp, fcnp);
1256 error = VOP_REMOVE(fdvp, fvp, fcnp);
1264 if ((error = ma_vn_lock(fvp, LK_EXCLUSIVE, p)) != 0)
1267 MALLOC(fname, char *, fcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1268 memcpy(fname, fcnp->cn_nameptr, fcnp->cn_namelen);
1269 fname[fcnp->cn_namelen] = '\0';
1270 MALLOC(tname, char *, tcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1271 memcpy(tname, tcnp->cn_nameptr, tcnp->cn_namelen);
1272 tname[tcnp->cn_namelen] = '\0';
1276 /* XXX use "from" or "to" creds? NFS uses "to" creds */
1278 afs_rename(VTOAFS(fdvp), fname, VTOAFS(tdvp), tname, tcnp->cn_cred);
1281 FREE(fname, M_TEMP);
1282 FREE(tname, M_TEMP);
1296 struct vop_mkdir_args /* {
1297 * struct vnode *a_dvp;
1298 * struct vnode **a_vpp;
1299 * struct componentname *a_cnp;
1300 * struct vattr *a_vap;
1303 register struct vnode *dvp = ap->a_dvp;
1304 register struct vattr *vap = ap->a_vap;
1307 #ifdef AFS_FBSD50_ENV
1308 struct thread *p = ap->a_cnp->cn_thread;
1310 struct proc *p = ap->a_cnp->cn_proc;
1315 if ((cnp->cn_flags & HASBUF) == 0)
1316 panic("afs_vop_mkdir: no name");
1319 error = afs_mkdir(VTOAFS(dvp), name, vap, &vcp, cnp->cn_cred);
1326 *ap->a_vpp = AFSTOV(vcp);
1327 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
1336 struct vop_rmdir_args /* {
1337 * struct vnode *a_dvp;
1338 * struct vnode *a_vp;
1339 * struct componentname *a_cnp;
1343 register struct vnode *dvp = ap->a_dvp;
1347 error = afs_rmdir(VTOAFS(dvp), name, cnp->cn_cred);
1353 /* struct vop_symlink_args {
1354 * struct vnode *a_dvp;
1355 * struct vnode **a_vpp;
1356 * struct componentname *a_cnp;
1357 * struct vattr *a_vap;
1362 afs_vop_symlink(struct vop_symlink_args *ap)
1365 struct vnode *newvp;
1376 afs_symlink(VTOAFS(dvp), name, ap->a_vap, ap->a_target, cnp->cn_cred);
1378 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
1380 newvp = AFSTOV(vcp);
1381 #ifdef AFS_FBSD50_ENV
1382 ma_vn_lock(newvp, LK_EXCLUSIVE | LK_RETRY, cnp->cn_thread);
1384 ma_vn_lock(newvp, LK_EXCLUSIVE | LK_RETRY, cnp->cn_proc);
1390 *(ap->a_vpp) = newvp;
1396 struct vop_readdir_args /* {
1397 * struct vnode *a_vp;
1398 * struct uio *a_uio;
1399 * struct ucred *a_cred;
1401 * u_long *a_cookies;
1407 /* printf("readdir %x cookies %x ncookies %d\n", ap->a_vp, ap->a_cookies,
1409 off = ap->a_uio->uio_offset;
1412 afs_readdir(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred, ap->a_eofflag);
1414 if (!error && ap->a_ncookies != NULL) {
1415 struct uio *uio = ap->a_uio;
1416 const struct dirent *dp, *dp_start, *dp_end;
1418 u_long *cookies, *cookiep;
1420 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
1421 panic("afs_readdir: burned cookies");
1422 dp = (const struct dirent *)
1423 ((const char *)uio->uio_iov->iov_base - (uio->uio_offset - off));
1425 dp_end = (const struct dirent *)uio->uio_iov->iov_base;
1426 for (dp_start = dp, ncookies = 0; dp < dp_end;
1427 dp = (const struct dirent *)((const char *)dp + dp->d_reclen))
1430 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP,
1432 for (dp = dp_start, cookiep = cookies; dp < dp_end;
1433 dp = (const struct dirent *)((const char *)dp + dp->d_reclen)) {
1434 off += dp->d_reclen;
1437 *ap->a_cookies = cookies;
1438 *ap->a_ncookies = ncookies;
1445 afs_vop_readlink(ap)
1446 struct vop_readlink_args /* {
1447 * struct vnode *a_vp;
1448 * struct uio *a_uio;
1449 * struct ucred *a_cred;
1453 /* printf("readlink %x\n", ap->a_vp);*/
1455 error = afs_readlink(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred);
1460 extern int prtactive;
1463 afs_vop_inactive(ap)
1464 struct vop_inactive_args /* {
1465 * struct vnode *a_vp;
1469 register struct vnode *vp = ap->a_vp;
1471 if (prtactive && vp->v_usecount != 0)
1472 vprint("afs_vop_inactive(): pushing active", vp);
1475 afs_InactiveVCache(VTOAFS(vp), 0); /* decrs ref counts */
1477 #ifndef AFS_FBSD80_ENV
1478 MA_VOP_UNLOCK(vp, 0, ap->a_p);
1484 * struct vop_reclaim_args {
1485 * struct vnode *a_vp;
1489 afs_vop_reclaim(struct vop_reclaim_args *ap)
1491 /* copied from ../OBSD/osi_vnodeops.c:afs_nbsd_reclaim() */
1493 struct vnode *vp = ap->a_vp;
1494 struct vcache *avc = VTOAFS(vp);
1495 int haveGlock = ISAFS_GLOCK();
1496 int haveVlock = CheckLock(&afs_xvcache);
1501 ObtainWriteLock(&afs_xvcache, 901);
1502 #ifndef AFS_DISCON_ENV
1503 code = afs_FlushVCache(avc, &slept); /* tosses our stuff from vnode */
1505 /* reclaim the vnode and the in-memory vcache, but keep the on-disk vcache */
1506 code = afs_FlushVS(avc);
1509 ReleaseWriteLock(&afs_xvcache);
1514 * XXX Pretend it worked, to prevent panic on shutdown
1515 * Garrett, please fix - Jim Rees
1518 printf("afs_vop_reclaim: afs_FlushVCache failed code %d\n", code);
1520 /* basically, it must not fail */
1521 vnode_destroy_vobject(vp);
1527 #ifndef AFS_FBSD60_ENV
1530 struct vop_bmap_args /* {
1531 * struct vnode *a_vp;
1533 * struct vnode **a_vpp;
1540 *ap->a_bnp = ap->a_bn * (PAGE_SIZE / DEV_BSIZE);
1543 *ap->a_vpp = ap->a_vp;
1545 if (ap->a_runp != NULL)
1547 if (ap->a_runb != NULL)
1555 afs_vop_strategy(ap)
1556 struct vop_strategy_args /* {
1562 error = afs_ustrategy(ap->a_bp, osi_curcred());
1569 struct vop_print_args /* {
1570 * struct vnode *a_vp;
1573 register struct vnode *vp = ap->a_vp;
1574 register struct vcache *vc = VTOAFS(ap->a_vp);
1575 int s = vc->f.states;
1577 printf("tag %s, fid: %d.%d.%d.%d, 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);
1581 printf("\n states%s%s%s%s%s", (s & CStatd) ? " statd" : "",
1582 (s & CRO) ? " readonly" : "", (s & CDirty) ? " dirty" : "",
1583 (s & CMAPPED) ? " mapped" : "",
1584 (s & CVFlushed) ? " flush in progress" : "");
1590 * Advisory record locking support (fcntl() POSIX style)
1594 struct vop_advlock_args /* {
1595 * struct vnode *a_vp;
1598 * struct flock *a_fl;
1603 struct ucred cr = *osi_curcred();
1607 afs_lockctl(VTOAFS(ap->a_vp), ap->a_fl, ap->a_op, &cr, (int)ap->a_id);