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Import Upstream version 1.8.5
[hcoop/debian/openafs.git] / src / afs / FBSD / osi_vnodeops.c
CommitLineData
805e021f
CE		 1/*
2 * A large chunk of this file appears to be copied directly from
3 * sys/nfsclient/nfs_bio.c, which has the following license:
4 */
5/*
6 * Copyright (c) 1989, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * Rick Macklem at The University of Guelph.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
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.
27 *
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
38 * SUCH DAMAGE.
39 *
40 * @(#)nfs_bio.c 8.9 (Berkeley) 3/30/95
41 */
42/*
43 * Pursuant to a statement of U.C. Berkeley dated 1999-07-22, this license
44 * is amended to drop clause (3) above.
45 */
46
47#include <afsconfig.h>
48#include <afs/param.h>
49
50
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#if __FreeBSD_version >= 1000030
58#include <sys/rwlock.h>
59#endif
60#include <vm/vm_page.h>
61#include <vm/vm_object.h>
62#include <vm/vm_pager.h>
63#include <vm/vnode_pager.h>
64extern int afs_pbuf_freecnt;
65
66#ifdef AFS_FBSD60_ENV
67static vop_access_t afs_vop_access;
68static vop_advlock_t afs_vop_advlock;
69static vop_close_t afs_vop_close;
70static vop_create_t afs_vop_create;
71static vop_fsync_t afs_vop_fsync;
72static vop_getattr_t afs_vop_getattr;
73static vop_getpages_t afs_vop_getpages;
74static vop_inactive_t afs_vop_inactive;
75static vop_ioctl_t afs_vop_ioctl;
76static vop_link_t afs_vop_link;
77static vop_lookup_t afs_vop_lookup;
78static vop_mkdir_t afs_vop_mkdir;
79static vop_mknod_t afs_vop_mknod;
80static vop_open_t afs_vop_open;
81static vop_pathconf_t afs_vop_pathconf;
82static vop_print_t afs_vop_print;
83static vop_putpages_t afs_vop_putpages;
84static vop_read_t afs_vop_read;
85static vop_readdir_t afs_vop_readdir;
86static vop_readlink_t afs_vop_readlink;
87static vop_reclaim_t afs_vop_reclaim;
88static vop_remove_t afs_vop_remove;
89static vop_rename_t afs_vop_rename;
90static vop_rmdir_t afs_vop_rmdir;
91static vop_setattr_t afs_vop_setattr;
92static vop_strategy_t afs_vop_strategy;
93static vop_symlink_t afs_vop_symlink;
94static vop_write_t afs_vop_write;
95#if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD80_ENV)
96static vop_lock1_t afs_vop_lock;
97static vop_unlock_t afs_vop_unlock;
98static vop_islocked_t afs_vop_islocked;
99#endif
100
101struct vop_vector afs_vnodeops = {
102 .vop_default = &default_vnodeops,
103 .vop_access = afs_vop_access,
104 .vop_advlock = afs_vop_advlock,
105 .vop_close = afs_vop_close,
106 .vop_create = afs_vop_create,
107 .vop_fsync = afs_vop_fsync,
108 .vop_getattr = afs_vop_getattr,
109 .vop_getpages = afs_vop_getpages,
110 .vop_inactive = afs_vop_inactive,
111 .vop_ioctl = afs_vop_ioctl,
112#if !defined(AFS_FBSD80_ENV)
113 /* removed at least temporarily (NFSv4 flux) */
114 .vop_lease = VOP_NULL,
115#endif
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_print = afs_vop_print,
123 .vop_putpages = afs_vop_putpages,
124 .vop_read = afs_vop_read,
125 .vop_readdir = afs_vop_readdir,
126 .vop_readlink = afs_vop_readlink,
127 .vop_reclaim = afs_vop_reclaim,
128 .vop_remove = afs_vop_remove,
129 .vop_rename = afs_vop_rename,
130 .vop_rmdir = afs_vop_rmdir,
131 .vop_setattr = afs_vop_setattr,
132 .vop_strategy = afs_vop_strategy,
133 .vop_symlink = afs_vop_symlink,
134 .vop_write = afs_vop_write,
135#if defined(AFS_FBSD70_ENV) && !defined(AFS_FBSD80_ENV)
136 .vop_lock1 = afs_vop_lock,
137 .vop_unlock = afs_vop_unlock,
138 .vop_islocked = afs_vop_islocked,
139#endif
140};
141
142#else /* AFS_FBSD60_ENV */
143
144int afs_vop_lookup(struct vop_lookup_args *);
145int afs_vop_create(struct vop_create_args *);
146int afs_vop_mknod(struct vop_mknod_args *);
147int afs_vop_open(struct vop_open_args *);
148int afs_vop_close(struct vop_close_args *);
149int afs_vop_access(struct vop_access_args *);
150int afs_vop_getattr(struct vop_getattr_args *);
151int afs_vop_setattr(struct vop_setattr_args *);
152int afs_vop_read(struct vop_read_args *);
153int afs_vop_write(struct vop_write_args *);
154int afs_vop_getpages(struct vop_getpages_args *);
155int afs_vop_putpages(struct vop_putpages_args *);
156int afs_vop_ioctl(struct vop_ioctl_args *);
157static int afs_vop_pathconf(struct vop_pathconf_args *);
158int afs_vop_fsync(struct vop_fsync_args *);
159int afs_vop_remove(struct vop_remove_args *);
160int afs_vop_link(struct vop_link_args *);
161int afs_vop_rename(struct vop_rename_args *);
162int afs_vop_mkdir(struct vop_mkdir_args *);
163int afs_vop_rmdir(struct vop_rmdir_args *);
164int afs_vop_symlink(struct vop_symlink_args *);
165int afs_vop_readdir(struct vop_readdir_args *);
166int afs_vop_readlink(struct vop_readlink_args *);
167int afs_vop_inactive(struct vop_inactive_args *);
168int afs_vop_reclaim(struct vop_reclaim_args *);
169int afs_vop_bmap(struct vop_bmap_args *);
170int afs_vop_strategy(struct vop_strategy_args *);
171int afs_vop_print(struct vop_print_args *);
172int afs_vop_advlock(struct vop_advlock_args *);
173
174
175
176/* Global vfs data structures for AFS. */
177vop_t **afs_vnodeop_p;
178struct 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 *) vop_nopoll}, /* 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 */
219#endif
220 {NULL, NULL}
221};
222struct vnodeopv_desc afs_vnodeop_opv_desc =
223 { &afs_vnodeop_p, afs_vnodeop_entries };
224#endif /* AFS_FBSD60_ENV */
225
226#define GETNAME() \
227 struct componentname *cnp = ap->a_cnp; \
228 char *name; \
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'
232
233#define DROPNAME() FREE(name, M_TEMP)
234
235/*
236 * Here we define compatibility functions/macros for interfaces that
237 * have changed between different FreeBSD versions.
238 */
239#if defined(AFS_FBSD90_ENV)
240static __inline void ma_vm_page_lock_queues(void) {};
241static __inline void ma_vm_page_unlock_queues(void) {};
242static __inline void ma_vm_page_lock(vm_page_t m) { vm_page_lock(m); };
243static __inline void ma_vm_page_unlock(vm_page_t m) { vm_page_unlock(m); };
244#else
245static __inline void ma_vm_page_lock_queues(void) { vm_page_lock_queues(); };
246static __inline void ma_vm_page_unlock_queues(void) { vm_page_unlock_queues(); };
247static __inline void ma_vm_page_lock(vm_page_t m) {};
248static __inline void ma_vm_page_unlock(vm_page_t m) {};
249#endif
250
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))
255#else
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))
259#endif
260
261#if defined(AFS_FBSD70_ENV)
262#define MA_PCPU_INC(c) PCPU_INC(c)
263#define MA_PCPU_ADD(c, n) PCPU_ADD(c, n)
264#else
265#define MA_PCPU_INC(c) PCPU_LAZY_INC(c)
266#define MA_PCPU_ADD(c, n) (c) += (n)
267#endif
268
269#if __FreeBSD_version >= 1000030
270#define AFS_VM_OBJECT_WLOCK(o) VM_OBJECT_WLOCK(o)
271#define AFS_VM_OBJECT_WUNLOCK(o) VM_OBJECT_WUNLOCK(o)
272#else
273#define AFS_VM_OBJECT_WLOCK(o) VM_OBJECT_LOCK(o)
274#define AFS_VM_OBJECT_WUNLOCK(o) VM_OBJECT_UNLOCK(o)
275#endif
276
277#ifdef AFS_FBSD70_ENV
278#ifndef AFS_FBSD80_ENV
279/* From kern_lock.c */
280#define COUNT(td, x) if ((td)) (td)->td_locks += (x)
281#define LK_ALL (LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE | \
282 LK_SHARE_NONZERO | LK_WAIT_NONZERO)
283
284static __inline void
285sharelock(struct thread *td, struct lock *lkp, int incr) {
286 lkp->lk_flags |= LK_SHARE_NONZERO;
287 lkp->lk_sharecount += incr;
288 COUNT(td, incr);
289}
290#endif
291
292/*
293 * Standard lock, unlock and islocked functions.
294 */
295int
296afs_vop_lock(ap)
297 struct vop_lock1_args /* {
298 struct vnode *a_vp;
299 int a_flags;
300 struct thread *a_td;
301 char *file;
302 int line;
303 } */ *ap;
304{
305 struct vnode *vp = ap->a_vp;
306 struct lock *lkp = vp->v_vnlock;
307
308#if 0 && defined(AFS_FBSD80_ENV) && !defined(UKERNEL)
309 afs_warn("afs_vop_lock: tid %d pid %d \"%s\"\n", curthread->td_tid,
310 curthread->td_proc->p_pid, curthread->td_name);
311 kdb_backtrace();
312#endif
313
314#ifdef AFS_FBSD80_ENV
315 return (_lockmgr_args(lkp, ap->a_flags, VI_MTX(vp),
316 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT,
317 ap->a_file, ap->a_line));
318#else
319 return (_lockmgr(lkp, ap->a_flags, VI_MTX(vp), ap->a_td, ap->a_file, ap->a_line));
320#endif
321}
322
323/* See above. */
324int
325afs_vop_unlock(ap)
326 struct vop_unlock_args /* {
327 struct vnode *a_vp;
328 int a_flags;
329 struct thread *a_td;
330 } */ *ap;
331{
332 struct vnode *vp = ap->a_vp;
333 struct lock *lkp = vp->v_vnlock;
334
335#ifdef AFS_FBSD80_ENV
336 int code = 0;
337 u_int op;
338 op = ((ap->a_flags) | LK_RELEASE) & LK_TYPE_MASK;
339 int glocked = ISAFS_GLOCK();
340 if (glocked)
341 AFS_GUNLOCK();
342 if ((op & (op - 1)) != 0) {
343 afs_warn("afs_vop_unlock: Shit.\n");
344 goto done;
345 }
346 code = lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp));
347 done:
348 if (glocked)
349 AFS_GLOCK();
350 return(code);
351#else
352 /* possibly in current code path where this
353 * forces trace, we should have had a (shared? not
354 * necessarily, see _lockmgr in kern_lock.c) lock
355 * and that's the real bug. but.
356 */
357 critical_enter();
358 if ((lkp->lk_exclusivecount == 0) &&
359 (!(lkp->lk_flags & LK_SHARE_NONZERO))) {
360 sharelock(ap->a_td, lkp, 1);
361 }
362 critical_exit();
363 return (lockmgr(lkp, ap->a_flags | LK_RELEASE, VI_MTX(vp),
364 ap->a_td));
365#endif
366}
367
368/* See above. */
369int
370afs_vop_islocked(ap)
371 struct vop_islocked_args /* {
372 struct vnode *a_vp;
373 struct thread *a_td; (not in 80)
374 } */ *ap;
375{
376#ifdef AFS_FBSD80_ENV
377 return (lockstatus(ap->a_vp->v_vnlock));
378#else
379 return (lockstatus(ap->a_vp->v_vnlock, ap->a_td));
380#endif
381}
382#endif /* 70 */
383
384/*
385 * Mosty copied from sys/ufs/ufs/ufs_vnops.c:ufs_pathconf().
386 * We should know the correct answers to these questions with
387 * respect to the AFS protocol (which may differ from the UFS
388 * values) but for the moment this will do.
389 */
390static int
391afs_vop_pathconf(struct vop_pathconf_args *ap)
392{
393 int error;
394
395 error = 0;
396 switch (ap->a_name) {
397 case _PC_LINK_MAX:
398 *ap->a_retval = LINK_MAX;
399 break;
400 case _PC_NAME_MAX:
401 *ap->a_retval = NAME_MAX;
402 break;
403 case _PC_PATH_MAX:
404 *ap->a_retval = PATH_MAX;
405 break;
406 case _PC_PIPE_BUF:
407 *ap->a_retval = PIPE_BUF;
408 break;
409 case _PC_CHOWN_RESTRICTED:
410 *ap->a_retval = 1;
411 break;
412 case _PC_NO_TRUNC:
413 *ap->a_retval = 1;
414 break;
415#ifdef _PC_ACL_EXTENDED
416 case _PC_ACL_EXTENDED:
417 *ap->a_retval = 0;
418 break;
419 case _PC_ACL_PATH_MAX:
420 *ap->a_retval = 3;
421 break;
422#endif
423#ifdef _PC_MAC_PRESENT
424 case _PC_MAC_PRESENT:
425 *ap->a_retval = 0;
426 break;
427#endif
428#ifdef _PC_ASYNC_IO
429 case _PC_ASYNC_IO:
430 /* _PC_ASYNC_IO should have been handled by upper layers. */
431 KASSERT(0, ("_PC_ASYNC_IO should not get here"));
432 error = EINVAL;
433 break;
434 case _PC_PRIO_IO:
435 *ap->a_retval = 0;
436 break;
437 case _PC_SYNC_IO:
438 *ap->a_retval = 0;
439 break;
440#endif
441#ifdef _PC_ALLOC_SIZE_MIN
442 case _PC_ALLOC_SIZE_MIN:
443 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
444 break;
445#endif
446#ifdef _PC_FILESIZEBITS
447 case _PC_FILESIZEBITS:
448 *ap->a_retval = 32; /* XXX */
449 break;
450#endif
451#ifdef _PC_REC_INCR_XFER_SIZE
452 case _PC_REC_INCR_XFER_SIZE:
453 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
454 break;
455 case _PC_REC_MAX_XFER_SIZE:
456 *ap->a_retval = -1; /* means ``unlimited'' */
457 break;
458 case _PC_REC_MIN_XFER_SIZE:
459 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
460 break;
461 case _PC_REC_XFER_ALIGN:
462 *ap->a_retval = PAGE_SIZE;
463 break;
464#endif
465#ifdef _PC_SYMLINK_MAX
466 case _PC_SYMLINK_MAX:
467 *ap->a_retval = MAXPATHLEN;
468 break;
469#endif
470 default:
471 error = EINVAL;
472 break;
473 }
474 return (error);
475}
476
477int
478afs_vop_lookup(ap)
479 struct vop_lookup_args /* {
480 * struct vnodeop_desc * a_desc;
481 * struct vnode *a_dvp;
482 * struct vnode **a_vpp;
483 * struct componentname *a_cnp;
484 * } */ *ap;
485{
486 int error;
487 struct vcache *vcp;
488 struct vnode *vp, *dvp;
489 int flags = ap->a_cnp->cn_flags;
490 int lockparent; /* 1 => lockparent flag is set */
491 int wantparent; /* 1 => wantparent or lockparent flag */
492#ifndef AFS_FBSD80_ENV
493 struct thread *p = ap->a_cnp->cn_thread;
494#endif
495
496 dvp = ap->a_dvp;
497 if (dvp->v_type != VDIR) {
498#ifndef AFS_FBSD70_ENV
499 *ap->a_vpp = 0;
500#endif
501 return ENOTDIR;
502 }
503
504 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT))
505 return EIO;
506
507 GETNAME();
508
509 lockparent = flags & LOCKPARENT;
510 wantparent = flags & (LOCKPARENT | WANTPARENT);
511
512#if __FreeBSD_version < 1000021
513 cnp->cn_flags |= MPSAFE; /* steel */
514#endif
515
516 if (flags & ISDOTDOT)
517 MA_VOP_UNLOCK(dvp, 0, p);
518
519 AFS_GLOCK();
520 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
521 AFS_GUNLOCK();
522
523 if (error) {
524 if (flags & ISDOTDOT)
525 MA_VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p);
526 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME)
527 && (flags & ISLASTCN) && error == ENOENT)
528 error = EJUSTRETURN;
529 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
530 cnp->cn_flags |= SAVENAME;
531 DROPNAME();
532 *ap->a_vpp = 0;
533 return (error);
534 }
535 vp = AFSTOV(vcp); /* always get a node if no error */
536
537 /* The parent directory comes in locked. We unlock it on return
538 * unless the caller wants it left locked.
539 * we also always return the vnode locked. */
540
541 if (flags & ISDOTDOT) {
542 /* vp before dvp since we go root to leaf, and .. comes first */
543 ma_vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
544 ma_vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, p);
545 /* always return the child locked */
546 if (lockparent && (flags & ISLASTCN)
547 && (error = ma_vn_lock(dvp, LK_EXCLUSIVE, p))) {
548 vput(vp);
549 DROPNAME();
550 return (error);
551 }
552 } else if (vp == dvp) {
553 /* they're the same; afs_lookup() already ref'ed the leaf.
554 * It came in locked, so we don't need to ref OR lock it */
555 } else {
556 if (!lockparent || !(flags & ISLASTCN)) {
557#ifndef AFS_FBSD70_ENV /* 6 too? */
558 MA_VOP_UNLOCK(dvp, 0, p); /* done with parent. */
559#endif
560 }
561 ma_vn_lock(vp, LK_EXCLUSIVE | LK_CANRECURSE | LK_RETRY, p);
562 /* always return the child locked */
563 }
564 *ap->a_vpp = vp;
565
566 if ((cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN))
567 || (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN)))
568 cnp->cn_flags |= SAVENAME;
569
570 DROPNAME();
571 return error;
572}
573
574int
575afs_vop_create(ap)
576 struct vop_create_args /* {
577 * struct vnode *a_dvp;
578 * struct vnode **a_vpp;
579 * struct componentname *a_cnp;
580 * struct vattr *a_vap;
581 * } */ *ap;
582{
583 int error = 0;
584 struct vcache *vcp;
585 struct vnode *dvp = ap->a_dvp;
586#ifndef AFS_FBSD80_ENV
587 struct thread *p = ap->a_cnp->cn_thread;
588#endif
589 GETNAME();
590
591 AFS_GLOCK();
592 error =
593 afs_create(VTOAFS(dvp), name, ap->a_vap,
594 ap->a_vap->va_vaflags & VA_EXCLUSIVE ? EXCL : NONEXCL,
595 ap->a_vap->va_mode, &vcp, cnp->cn_cred);
596 AFS_GUNLOCK();
597 if (error) {
598 DROPNAME();
599 return (error);
600 }
601
602 if (vcp) {
603 *ap->a_vpp = AFSTOV(vcp);
604 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
605 } else
606 *ap->a_vpp = 0;
607
608 DROPNAME();
609 return error;
610}
611
612int
613afs_vop_mknod(ap)
614 struct vop_mknod_args /* {
615 * struct vnode *a_dvp;
616 * struct vnode **a_vpp;
617 * struct componentname *a_cnp;
618 * struct vattr *a_vap;
619 * } */ *ap;
620{
621 return (ENODEV);
622}
623
624#if 0
625static int
626validate_vops(struct vnode *vp, int after)
627{
628 int ret = 0;
629 struct vnodeopv_entry_desc *this;
630 for (this = afs_vnodeop_entries; this->opve_op; this++) {
631 if (vp->v_op[this->opve_op->vdesc_offset] != this->opve_impl) {
632 if (!ret) {
633 printf("v_op %d ", after);
634 vprint("check", vp);
635 }
636 ret = 1;
637 printf("For oper %d (%s), func is %p, not %p",
638 this->opve_op->vdesc_offset, this->opve_op->vdesc_name,
639 vp->v_op[this->opve_op->vdesc_offset], this->opve_impl);
640 }
641 }
642 return ret;
643}
644#endif
645int
646afs_vop_open(ap)
647 struct vop_open_args /* {
648 * struct vnode *a_vp;
649 * int a_mode;
650 * struct ucred *a_cred;
651 * struct thread *a_td;
652 * struct file *a_fp;
653 * } */ *ap;
654{
655 int error;
656 struct vcache *vc = VTOAFS(ap->a_vp);
657
658 AFS_GLOCK();
659 error = afs_open(&vc, ap->a_mode, ap->a_cred);
660#ifdef DIAGNOSTIC
661 if (AFSTOV(vc) != ap->a_vp)
662 panic("AFS open changed vnode!");
663#endif
664 AFS_GUNLOCK();
665#ifdef AFS_FBSD60_ENV
666 vnode_create_vobject(ap->a_vp, vc->f.m.Length, ap->a_td);
667#endif
668 osi_FlushPages(vc, ap->a_cred);
669 return error;
670}
671
672int
673afs_vop_close(ap)
674 struct vop_close_args /* {
675 * struct vnode *a_vp;
676 * int a_fflag;
677 * struct ucred *a_cred;
678 * struct thread *a_td;
679 * } */ *ap;
680{
681 int code, iflag;
682 struct vnode *vp = ap->a_vp;
683 struct vcache *avc = VTOAFS(vp);
684
685#if defined(AFS_FBSD80_ENV)
686 VI_LOCK(vp);
687 iflag = vp->v_iflag & VI_DOOMED;
688 VI_UNLOCK(vp);
689 if (iflag & VI_DOOMED) {
690 /* osi_FlushVCache (correctly) calls vgone() on recycled vnodes, we don't
691 * have an afs_close to process, in that case */
692 if (avc->opens != 0)
693 panic("afs_vop_close: doomed vnode %p has vcache %p with non-zero opens %d\n",
694 vp, avc, avc->opens);
695 return 0;
696 }
697#endif
698
699 AFS_GLOCK();
700 if (ap->a_cred)
701 code = afs_close(avc, ap->a_fflag, ap->a_cred);
702 else
703 code = afs_close(avc, ap->a_fflag, afs_osi_credp);
704 osi_FlushPages(avc, ap->a_cred); /* hold GLOCK, but not basic vnode lock */
705 AFS_GUNLOCK();
706 return code;
707}
708
709int
710afs_vop_access(ap)
711 struct vop_access_args /* {
712 * struct vnode *a_vp;
713 * accmode_t a_accmode;
714 * struct ucred *a_cred;
715 * struct thread *a_td;
716 * } */ *ap;
717{
718 int code;
719 AFS_GLOCK();
720#if defined(AFS_FBSD80_ENV)
721 code = afs_access(VTOAFS(ap->a_vp), ap->a_accmode, ap->a_cred);
722#else
723 code = afs_access(VTOAFS(ap->a_vp), ap->a_mode, ap->a_cred);
724#endif
725 AFS_GUNLOCK();
726 return code;
727}
728
729int
730afs_vop_getattr(ap)
731 struct vop_getattr_args /* {
732 * struct vnode *a_vp;
733 * struct vattr *a_vap;
734 * struct ucred *a_cred;
735 * } */ *ap;
736{
737 int code;
738
739 AFS_GLOCK();
740 code = afs_getattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
741 AFS_GUNLOCK();
742
743 return code;
744}
745
746int
747afs_vop_setattr(ap)
748 struct vop_setattr_args /* {
749 * struct vnode *a_vp;
750 * struct vattr *a_vap;
751 * struct ucred *a_cred;
752 * } */ *ap;
753{
754 int code;
755 AFS_GLOCK();
756 code = afs_setattr(VTOAFS(ap->a_vp), ap->a_vap, ap->a_cred);
757 AFS_GUNLOCK();
758 return code;
759}
760
761int
762afs_vop_read(ap)
763 struct vop_read_args /* {
764 * struct vnode *a_vp;
765 * struct uio *a_uio;
766 * int a_ioflag;
767 * struct ucred *a_cred;
768 *
769 * } */ *ap;
770{
771 int code;
772 struct vcache *avc = VTOAFS(ap->a_vp);
773 AFS_GLOCK();
774 osi_FlushPages(avc, ap->a_cred); /* hold GLOCK, but not basic vnode lock */
775 code = afs_read(avc, ap->a_uio, ap->a_cred, 0);
776 AFS_GUNLOCK();
777 return code;
778}
779
780/* struct vop_getpages_args {
781 * struct vnode *a_vp;
782 * vm_page_t *a_m;
783 * int a_count;
784 * int *a_rbehind;
785 * int *a_rahead;
786 * };
787 */
788int
789afs_vop_getpages(struct vop_getpages_args *ap)
790{
791 int code;
792 int i, nextoff, size, toff, npages, count;
793 struct uio uio;
794 struct iovec iov;
795 struct buf *bp;
796 vm_offset_t kva;
797 vm_object_t object;
798 vm_page_t *pages;
799 struct vnode *vp;
800 struct vcache *avc;
801
802 memset(&uio, 0, sizeof(uio));
803 memset(&iov, 0, sizeof(iov));
804
805 vp = ap->a_vp;
806 avc = VTOAFS(vp);
807 pages = ap->a_m;
808#ifdef FBSD_VOP_GETPAGES_BUSIED
809 npages = ap->a_count;
810 if (ap->a_rbehind)
811 *ap->a_rbehind = 0;
812 if (ap->a_rahead)
813 *ap->a_rahead = 0;
814#else
815 npages = btoc(ap->a_count);
816#endif
817
818 if ((object = vp->v_object) == NULL) {
819 printf("afs_getpages: called with non-merged cache vnode??\n");
820 return VM_PAGER_ERROR;
821 }
822
823 /*
824 * If the requested page is partially valid, just return it and
825 * allow the pager to zero-out the blanks. Partially valid pages
826 * can only occur at the file EOF.
827 */
828 {
829#ifdef FBSD_VOP_GETPAGES_BUSIED
830 AFS_VM_OBJECT_WLOCK(object);
831 ma_vm_page_lock_queues();
832 if(pages[npages - 1]->valid != 0) {
833 if (--npages == 0) {
834 ma_vm_page_unlock_queues();
835 AFS_VM_OBJECT_WUNLOCK(object);
836 return (VM_PAGER_OK);
837 }
838 }
839#else
840 vm_page_t m = pages[ap->a_reqpage];
841 AFS_VM_OBJECT_WLOCK(object);
842 ma_vm_page_lock_queues();
843 if (m->valid != 0) {
844 /* handled by vm_fault now */
845 /* vm_page_zero_invalid(m, TRUE); */
846 for (i = 0; i < npages; ++i) {
847 if (i != ap->a_reqpage) {
848 ma_vm_page_lock(pages[i]);
849 vm_page_free(pages[i]);
850 ma_vm_page_unlock(pages[i]);
851 }
852 }
853 ma_vm_page_unlock_queues();
854 AFS_VM_OBJECT_WUNLOCK(object);
855 return (0);
856 }
857#endif
858 ma_vm_page_unlock_queues();
859 AFS_VM_OBJECT_WUNLOCK(object);
860 }
861 bp = getpbuf(&afs_pbuf_freecnt);
862
863 kva = (vm_offset_t) bp->b_data;
864 pmap_qenter(kva, pages, npages);
865 MA_PCPU_INC(cnt.v_vnodein);
866 MA_PCPU_ADD(cnt.v_vnodepgsin, npages);
867
868#ifdef FBSD_VOP_GETPAGES_BUSIED
869 count = ctob(npages);
870#else
871 count = ap->a_count;
872#endif
873 iov.iov_base = (caddr_t) kva;
874 iov.iov_len = count;
875 uio.uio_iov = &iov;
876 uio.uio_iovcnt = 1;
877 uio.uio_offset = IDX_TO_OFF(pages[0]->pindex);
878 uio.uio_resid = count;
879 uio.uio_segflg = UIO_SYSSPACE;
880 uio.uio_rw = UIO_READ;
881 uio.uio_td = curthread;
882
883 AFS_GLOCK();
884 osi_FlushPages(avc, osi_curcred()); /* hold GLOCK, but not basic vnode lock */
885 code = afs_read(avc, &uio, osi_curcred(), 0);
886 AFS_GUNLOCK();
887 pmap_qremove(kva, npages);
888
889 relpbuf(bp, &afs_pbuf_freecnt);
890
891 if (code && (uio.uio_resid == count)) {
892#ifndef FBSD_VOP_GETPAGES_BUSIED
893 AFS_VM_OBJECT_WLOCK(object);
894 ma_vm_page_lock_queues();
895 for (i = 0; i < npages; ++i) {
896 if (i != ap->a_reqpage)
897 vm_page_free(pages[i]);
898 }
899 ma_vm_page_unlock_queues();
900 AFS_VM_OBJECT_WUNLOCK(object);
901#endif
902 return VM_PAGER_ERROR;
903 }
904
905 size = count - uio.uio_resid;
906 AFS_VM_OBJECT_WLOCK(object);
907 ma_vm_page_lock_queues();
908 for (i = 0, toff = 0; i < npages; i++, toff = nextoff) {
909 vm_page_t m;
910 nextoff = toff + PAGE_SIZE;
911 m = pages[i];
912
913 /* XXX not in nfsclient? */
914 m->flags &= ~PG_ZERO;
915
916 if (nextoff <= size) {
917 /*
918 * Read operation filled an entire page
919 */
920 m->valid = VM_PAGE_BITS_ALL;
921#ifndef AFS_FBSD80_ENV
922 vm_page_undirty(m);
923#else
924 KASSERT(m->dirty == 0, ("afs_getpages: page %p is dirty", m));
925#endif
926 } else if (size > toff) {
927 /*
928 * Read operation filled a partial page.
929 */
930 m->valid = 0;
931 vm_page_set_validclean(m, 0, size - toff);
932 KASSERT(m->dirty == 0, ("afs_getpages: page %p is dirty", m));
933 }
934
935#ifndef FBSD_VOP_GETPAGES_BUSIED
936 if (i != ap->a_reqpage) {
937#if __FreeBSD_version >= 1000042
938 vm_page_readahead_finish(m);
939#else
940 /*
941 * Whether or not to leave the page activated is up in
942 * the air, but we should put the page on a page queue
943 * somewhere (it already is in the object). Result:
944 * It appears that emperical results show that
945 * deactivating pages is best.
946 */
947
948 /*
949 * Just in case someone was asking for this page we
950 * now tell them that it is ok to use.
951 */
952 if (!code) {
953#if defined(AFS_FBSD70_ENV)
954 if (m->oflags & VPO_WANTED) {
955#else
956 if (m->flags & PG_WANTED) {
957#endif
958 ma_vm_page_lock(m);
959 vm_page_activate(m);
960 ma_vm_page_unlock(m);
961 }
962 else {
963 ma_vm_page_lock(m);
964 vm_page_deactivate(m);
965 ma_vm_page_unlock(m);
966 }
967 vm_page_wakeup(m);
968 } else {
969 ma_vm_page_lock(m);
970 vm_page_free(m);
971 ma_vm_page_unlock(m);
972 }
973#endif /* __FreeBSD_version 1000042 */
974 }
975#endif /* ndef FBSD_VOP_GETPAGES_BUSIED */
976 }
977 ma_vm_page_unlock_queues();
978 AFS_VM_OBJECT_WUNLOCK(object);
979 return VM_PAGER_OK;
980}
981
982int
983afs_vop_write(ap)
984 struct vop_write_args /* {
985 * struct vnode *a_vp;
986 * struct uio *a_uio;
987 * int a_ioflag;
988 * struct ucred *a_cred;
989 * } */ *ap;
990{
991 int code;
992 struct vcache *avc = VTOAFS(ap->a_vp);
993 AFS_GLOCK();
994 osi_FlushPages(avc, ap->a_cred); /* hold GLOCK, but not basic vnode lock */
995 code =
996 afs_write(VTOAFS(ap->a_vp), ap->a_uio, ap->a_ioflag, ap->a_cred, 0);
997 AFS_GUNLOCK();
998 return code;
999}
1000
1001/*-
1002 * struct vop_putpages_args {
1003 * struct vnode *a_vp;
1004 * vm_page_t *a_m;
1005 * int a_count;
1006 * int a_sync;
1007 * int *a_rtvals;
1008 * vm_oofset_t a_offset;
1009 * };
1010 */
1011/*
1012 * All of the pages passed to us in ap->a_m[] are already marked as busy,
1013 * so there is no additional locking required to set their flags. -GAW
1014 */
1015int
1016afs_vop_putpages(struct vop_putpages_args *ap)
1017{
1018 int code;
1019 int i, size, npages, sync;
1020 struct uio uio;
1021 struct iovec iov;
1022 struct buf *bp;
1023 vm_offset_t kva;
1024 struct vnode *vp;
1025 struct vcache *avc;
1026
1027 memset(&uio, 0, sizeof(uio));
1028 memset(&iov, 0, sizeof(iov));
1029
1030 vp = ap->a_vp;
1031 avc = VTOAFS(vp);
1032 /* Perhaps these two checks should just be KASSERTs instead... */
1033 if (vp->v_object == NULL) {
1034 printf("afs_putpages: called with non-merged cache vnode??\n");
1035 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
1036 }
1037 if (vType(avc) != VREG) {
1038 printf("afs_putpages: not VREG");
1039 return VM_PAGER_ERROR; /* XXX I think this is insufficient */
1040 }
1041 npages = btoc(ap->a_count);
1042 for (i = 0; i < npages; i++)
1043 ap->a_rtvals[i] = VM_PAGER_AGAIN;
1044 bp = getpbuf(&afs_pbuf_freecnt);
1045
1046 kva = (vm_offset_t) bp->b_data;
1047 pmap_qenter(kva, ap->a_m, npages);
1048 MA_PCPU_INC(cnt.v_vnodeout);
1049 MA_PCPU_ADD(cnt.v_vnodepgsout, ap->a_count);
1050
1051 iov.iov_base = (caddr_t) kva;
1052 iov.iov_len = ap->a_count;
1053 uio.uio_iov = &iov;
1054 uio.uio_iovcnt = 1;
1055 uio.uio_offset = IDX_TO_OFF(ap->a_m[0]->pindex);
1056 uio.uio_resid = ap->a_count;
1057 uio.uio_segflg = UIO_SYSSPACE;
1058 uio.uio_rw = UIO_WRITE;
1059 uio.uio_td = curthread;
1060 sync = IO_VMIO;
1061 if (ap->a_sync & VM_PAGER_PUT_SYNC)
1062 sync |= IO_SYNC;
1063 /*if (ap->a_sync & VM_PAGER_PUT_INVAL)
1064 * sync |= IO_INVAL; */
1065
1066 AFS_GLOCK();
1067 code = afs_write(avc, &uio, sync, osi_curcred(), 0);
1068 AFS_GUNLOCK();
1069
1070 pmap_qremove(kva, npages);
1071 relpbuf(bp, &afs_pbuf_freecnt);
1072
1073 if (!code) {
1074 size = ap->a_count - uio.uio_resid;
1075 for (i = 0; i < round_page(size) / PAGE_SIZE; i++) {
1076 ap->a_rtvals[i] = VM_PAGER_OK;
1077 vm_page_undirty(ap->a_m[i]);
1078 }
1079 }
1080 return ap->a_rtvals[0];
1081}
1082
1083int
1084afs_vop_ioctl(ap)
1085 struct vop_ioctl_args /* {
1086 * struct vnode *a_vp;
1087 * u_long a_command;
1088 * void *a_data;
1089 * int a_fflag;
1090 * struct ucred *a_cred;
1091 * struct thread *a_td;
1092 * } */ *ap;
1093{
1094 struct vcache *tvc = VTOAFS(ap->a_vp);
1095 int error = 0;
1096
1097 /* in case we ever get in here... */
1098
1099 AFS_STATCNT(afs_ioctl);
1100 if (((ap->a_command >> 8) & 0xff) == 'V') {
1101 /* This is a VICEIOCTL call */
1102 AFS_GLOCK();
1103 error = HandleIoctl(tvc, ap->a_command, ap->a_data);
1104 AFS_GUNLOCK();
1105 return (error);
1106 } else {
1107 /* No-op call; just return. */
1108 return (ENOTTY);
1109 }
1110}
1111
1112int
1113afs_vop_fsync(ap)
1114 struct vop_fsync_args /* {
1115 * struct vnode *a_vp;
1116 * int a_waitfor;
1117 * struct thread *td;
1118 * } */ *ap;
1119{
1120 int error;
1121 struct vnode *vp = ap->a_vp;
1122
1123 AFS_GLOCK();
1124 /*vflushbuf(vp, wait); */
1125#ifdef AFS_FBSD60_ENV
1126 error = afs_fsync(VTOAFS(vp), ap->a_td->td_ucred);
1127#else
1128 if (ap->a_cred)
1129 error = afs_fsync(VTOAFS(vp), ap->a_cred);
1130 else
1131 error = afs_fsync(VTOAFS(vp), afs_osi_credp);
1132#endif
1133 AFS_GUNLOCK();
1134 return error;
1135}
1136
1137int
1138afs_vop_remove(ap)
1139 struct vop_remove_args /* {
1140 * struct vnode *a_dvp;
1141 * struct vnode *a_vp;
1142 * struct componentname *a_cnp;
1143 * } */ *ap;
1144{
1145 int error = 0;
1146 struct vnode *vp = ap->a_vp;
1147 struct vnode *dvp = ap->a_dvp;
1148
1149 GETNAME();
1150 AFS_GLOCK();
1151 error = afs_remove(VTOAFS(dvp), name, cnp->cn_cred);
1152 AFS_GUNLOCK();
1153 cache_purge(vp);
1154 DROPNAME();
1155 return error;
1156}
1157
1158int
1159afs_vop_link(ap)
1160 struct vop_link_args /* {
1161 * struct vnode *a_vp;
1162 * struct vnode *a_tdvp;
1163 * struct componentname *a_cnp;
1164 * } */ *ap;
1165{
1166 int error = 0;
1167 struct vnode *dvp = ap->a_tdvp;
1168 struct vnode *vp = ap->a_vp;
1169#ifndef AFS_FBSD80_ENV
1170 struct thread *p = ap->a_cnp->cn_thread;
1171#endif
1172
1173 GETNAME();
1174 if (dvp->v_mount != vp->v_mount) {
1175 error = EXDEV;
1176 goto out;
1177 }
1178 if (vp->v_type == VDIR) {
1179 error = EISDIR;
1180 goto out;
1181 }
1182 if ((error = ma_vn_lock(vp, LK_CANRECURSE | LK_EXCLUSIVE, p)) != 0) {
1183 goto out;
1184 }
1185 AFS_GLOCK();
1186 error = afs_link(VTOAFS(vp), VTOAFS(dvp), name, cnp->cn_cred);
1187 AFS_GUNLOCK();
1188 if (dvp != vp)
1189 MA_VOP_UNLOCK(vp, 0, p);
1190 out:
1191 DROPNAME();
1192 return error;
1193}
1194
1195int
1196afs_vop_rename(ap)
1197 struct vop_rename_args /* {
1198 * struct vnode *a_fdvp;
1199 * struct vnode *a_fvp;
1200 * struct componentname *a_fcnp;
1201 * struct vnode *a_tdvp;
1202 * struct vnode *a_tvp;
1203 * struct componentname *a_tcnp;
1204 * } */ *ap;
1205{
1206 int error = 0;
1207 struct componentname *fcnp = ap->a_fcnp;
1208 char *fname;
1209 struct componentname *tcnp = ap->a_tcnp;
1210 char *tname;
1211 struct vnode *tvp = ap->a_tvp;
1212 struct vnode *tdvp = ap->a_tdvp;
1213 struct vnode *fvp = ap->a_fvp;
1214 struct vnode *fdvp = ap->a_fdvp;
1215#ifndef AFS_FBSD80_ENV
1216 struct thread *p = fcnp->cn_thread;
1217#endif
1218
1219 /*
1220 * Check for cross-device rename.
1221 */
1222 if ((fvp->v_mount != tdvp->v_mount)
1223 || (tvp && (fvp->v_mount != tvp->v_mount))) {
1224 error = EXDEV;
1225 abortit:
1226 if (tdvp == tvp)
1227 vrele(tdvp);
1228 else
1229 vput(tdvp);
1230 if (tvp)
1231 vput(tvp);
1232 vrele(fdvp);
1233 vrele(fvp);
1234 return (error);
1235 }
1236 /*
1237 * if fvp == tvp, we're just removing one name of a pair of
1238 * directory entries for the same element. convert call into rename.
1239 ( (pinched from FreeBSD 4.4's ufs_rename())
1240
1241 */
1242 if (fvp == tvp) {
1243 if (fvp->v_type == VDIR) {
1244 error = EINVAL;
1245 goto abortit;
1246 }
1247
1248 /* Release destination completely. */
1249 vput(tdvp);
1250 vput(tvp);
1251
1252 /* Delete source. */
1253 vrele(fdvp);
1254 vrele(fvp);
1255 fcnp->cn_flags &= ~MODMASK;
1256 fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
1257 if ((fcnp->cn_flags & SAVESTART) == 0)
1258 panic("afs_rename: lost from startdir");
1259 fcnp->cn_nameiop = DELETE;
1260 VREF(fdvp);
1261 error = relookup(fdvp, &fvp, fcnp);
1262 if (error == 0)
1263 vrele(fdvp);
1264 if (fvp == NULL) {
1265 return (ENOENT);
1266 }
1267
1268 error = VOP_REMOVE(fdvp, fvp, fcnp);
1269 if (fdvp == fvp)
1270 vrele(fdvp);
1271 else
1272 vput(fdvp);
1273 vput(fvp);
1274 return (error);
1275 }
1276 if ((error = ma_vn_lock(fvp, LK_EXCLUSIVE, p)) != 0)
1277 goto abortit;
1278
1279 MALLOC(fname, char *, fcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1280 memcpy(fname, fcnp->cn_nameptr, fcnp->cn_namelen);
1281 fname[fcnp->cn_namelen] = '\0';
1282 MALLOC(tname, char *, tcnp->cn_namelen + 1, M_TEMP, M_WAITOK);
1283 memcpy(tname, tcnp->cn_nameptr, tcnp->cn_namelen);
1284 tname[tcnp->cn_namelen] = '\0';
1285
1286
1287 AFS_GLOCK();
1288 /* XXX use "from" or "to" creds? NFS uses "to" creds */
1289 error =
1290 afs_rename(VTOAFS(fdvp), fname, VTOAFS(tdvp), tname, tcnp->cn_cred);
1291 AFS_GUNLOCK();
1292
1293 FREE(fname, M_TEMP);
1294 FREE(tname, M_TEMP);
1295 if (tdvp == tvp)
1296 vrele(tdvp);
1297 else
1298 vput(tdvp);
1299 if (tvp)
1300 vput(tvp);
1301 vrele(fdvp);
1302 vput(fvp);
1303 return error;
1304}
1305
1306int
1307afs_vop_mkdir(ap)
1308 struct vop_mkdir_args /* {
1309 * struct vnode *a_dvp;
1310 * struct vnode **a_vpp;
1311 * struct componentname *a_cnp;
1312 * struct vattr *a_vap;
1313 * } */ *ap;
1314{
1315 struct vnode *dvp = ap->a_dvp;
1316 struct vattr *vap = ap->a_vap;
1317 int error = 0;
1318 struct vcache *vcp;
1319#ifndef AFS_FBSD80_ENV
1320 struct thread *p = ap->a_cnp->cn_thread;
1321#endif
1322
1323 GETNAME();
1324#ifdef DIAGNOSTIC
1325 if ((cnp->cn_flags & HASBUF) == 0)
1326 panic("afs_vop_mkdir: no name");
1327#endif
1328 AFS_GLOCK();
1329 error = afs_mkdir(VTOAFS(dvp), name, vap, &vcp, cnp->cn_cred);
1330 AFS_GUNLOCK();
1331 if (error) {
1332 DROPNAME();
1333 return (error);
1334 }
1335 if (vcp) {
1336 *ap->a_vpp = AFSTOV(vcp);
1337 ma_vn_lock(AFSTOV(vcp), LK_EXCLUSIVE | LK_RETRY, p);
1338 } else
1339 *ap->a_vpp = 0;
1340 DROPNAME();
1341 return error;
1342}
1343
1344int
1345afs_vop_rmdir(ap)
1346 struct vop_rmdir_args /* {
1347 * struct vnode *a_dvp;
1348 * struct vnode *a_vp;
1349 * struct componentname *a_cnp;
1350 * } */ *ap;
1351{
1352 int error = 0;
1353 struct vnode *dvp = ap->a_dvp;
1354
1355 GETNAME();
1356 AFS_GLOCK();
1357 error = afs_rmdir(VTOAFS(dvp), name, cnp->cn_cred);
1358 AFS_GUNLOCK();
1359 DROPNAME();
1360 return error;
1361}
1362
1363/* struct vop_symlink_args {
1364 * struct vnode *a_dvp;
1365 * struct vnode **a_vpp;
1366 * struct componentname *a_cnp;
1367 * struct vattr *a_vap;
1368 * char *a_target;
1369 * };
1370 */
1371int
1372afs_vop_symlink(struct vop_symlink_args *ap)
1373{
1374 struct vnode *dvp;
1375 struct vnode *newvp;
1376 struct vcache *vcp;
1377 int error;
1378
1379 GETNAME();
1380 AFS_GLOCK();
1381
1382 dvp = ap->a_dvp;
1383 newvp = NULL;
1384
1385 error =
1386 afs_symlink(VTOAFS(dvp), name, ap->a_vap, ap->a_target, NULL,
1387 cnp->cn_cred);
1388 if (error == 0) {
1389 error = afs_lookup(VTOAFS(dvp), name, &vcp, cnp->cn_cred);
1390 if (error == 0) {
1391 newvp = AFSTOV(vcp);
1392 ma_vn_lock(newvp, LK_EXCLUSIVE | LK_RETRY, cnp->cn_thread);
1393 }
1394 }
1395 AFS_GUNLOCK();
1396 DROPNAME();
1397 *(ap->a_vpp) = newvp;
1398 return error;
1399}
1400
1401int
1402afs_vop_readdir(ap)
1403 struct vop_readdir_args /* {
1404 * struct vnode *a_vp;
1405 * struct uio *a_uio;
1406 * struct ucred *a_cred;
1407 * int *a_eofflag;
1408 * u_long *a_cookies;
1409 * int ncookies;
1410 * } */ *ap;
1411{
1412 int error;
1413 off_t off;
1414/* printf("readdir %x cookies %x ncookies %d\n", ap->a_vp, ap->a_cookies,
1415 ap->a_ncookies); */
1416 off = ap->a_uio->uio_offset;
1417 AFS_GLOCK();
1418 error =
1419 afs_readdir(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred, ap->a_eofflag);
1420 AFS_GUNLOCK();
1421 if (!error && ap->a_ncookies != NULL) {
1422 struct uio *uio = ap->a_uio;
1423 const struct dirent *dp, *dp_start, *dp_end;
1424 int ncookies;
1425 u_long *cookies, *cookiep;
1426
1427 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
1428 panic("afs_readdir: burned cookies");
1429 dp = (const struct dirent *)
1430 ((const char *)uio->uio_iov->iov_base - (uio->uio_offset - off));
1431
1432 dp_end = (const struct dirent *)uio->uio_iov->iov_base;
1433 for (dp_start = dp, ncookies = 0; dp < dp_end;
1434 dp = (const struct dirent *)((const char *)dp + dp->d_reclen))
1435 ncookies++;
1436
1437 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP,
1438 M_WAITOK);
1439 for (dp = dp_start, cookiep = cookies; dp < dp_end;
1440 dp = (const struct dirent *)((const char *)dp + dp->d_reclen)) {
1441 off += dp->d_reclen;
1442 *cookiep++ = off;
1443 }
1444 *ap->a_cookies = cookies;
1445 *ap->a_ncookies = ncookies;
1446 }
1447
1448 return error;
1449}
1450
1451int
1452afs_vop_readlink(ap)
1453 struct vop_readlink_args /* {
1454 * struct vnode *a_vp;
1455 * struct uio *a_uio;
1456 * struct ucred *a_cred;
1457 * } */ *ap;
1458{
1459 int error;
1460/* printf("readlink %x\n", ap->a_vp);*/
1461 AFS_GLOCK();
1462 error = afs_readlink(VTOAFS(ap->a_vp), ap->a_uio, ap->a_cred);
1463 AFS_GUNLOCK();
1464 return error;
1465}
1466
1467int
1468afs_vop_inactive(ap)
1469 struct vop_inactive_args /* {
1470 * struct vnode *a_vp;
1471 * struct thread *td;
1472 * } */ *ap;
1473{
1474 struct vnode *vp = ap->a_vp;
1475
1476 AFS_GLOCK();
1477 afs_InactiveVCache(VTOAFS(vp), 0); /* decrs ref counts */
1478 AFS_GUNLOCK();
1479#ifndef AFS_FBSD60_ENV
1480 MA_VOP_UNLOCK(vp, 0, ap->a_td);
1481#endif
1482 return 0;
1483}
1484
1485/*
1486 * struct vop_reclaim_args {
1487 * struct vnode *a_vp;
1488 * };
1489 */
1490int
1491afs_vop_reclaim(struct vop_reclaim_args *ap)
1492{
1493 /* copied from ../OBSD/osi_vnodeops.c:afs_nbsd_reclaim() */
1494 int code, slept;
1495 struct vnode *vp = ap->a_vp;
1496 struct vcache *avc = VTOAFS(vp);
1497 int haveGlock = ISAFS_GLOCK();
1498 int haveVlock = CheckLock(&afs_xvcache);
1499
1500 if (!haveGlock)
1501 AFS_GLOCK();
1502 if (!haveVlock)
1503 ObtainWriteLock(&afs_xvcache, 901);
1504 /* reclaim the vnode and the in-memory vcache, but keep the on-disk vcache */
1505 code = afs_FlushVCache(avc, &slept);
1506
1507 if (avc->f.states & CVInit) {
1508 avc->f.states &= ~CVInit;
1509 afs_osi_Wakeup(&avc->f.states);
1510 }
1511
1512 if (!haveVlock)
1513 ReleaseWriteLock(&afs_xvcache);
1514 if (!haveGlock)
1515 AFS_GUNLOCK();
1516
1517 if (code) {
1518 afs_warn("afs_vop_reclaim: afs_FlushVCache failed code %d vnode\n", code);
1519 VOP_PRINT(vp);
1520 }
1521
1522 /* basically, it must not fail */
1523 vnode_destroy_vobject(vp);
1524 vp->v_data = 0;
1525
1526 return 0;
1527}
1528
1529#ifndef AFS_FBSD60_ENV
1530int
1531afs_vop_bmap(ap)
1532 struct vop_bmap_args /* {
1533 * struct vnode *a_vp;
1534 * daddr_t a_bn;
1535 * struct vnode **a_vpp;
1536 * daddr_t *a_bnp;
1537 * int *a_runp;
1538 * int *a_runb;
1539 * } */ *ap;
1540{
1541 if (ap->a_bnp) {
1542 *ap->a_bnp = ap->a_bn * (PAGE_SIZE / DEV_BSIZE);
1543 }
1544 if (ap->a_vpp) {
1545 *ap->a_vpp = ap->a_vp;
1546 }
1547 if (ap->a_runp != NULL)
1548 *ap->a_runp = 0;
1549 if (ap->a_runb != NULL)
1550 *ap->a_runb = 0;
1551
1552 return 0;
1553}
1554#endif
1555
1556int
1557afs_vop_strategy(ap)
1558 struct vop_strategy_args /* {
1559 * struct buf *a_bp;
1560 * } */ *ap;
1561{
1562 int error;
1563 AFS_GLOCK();
1564 error = afs_ustrategy(ap->a_bp, osi_curcred());
1565 AFS_GUNLOCK();
1566 return error;
1567}
1568
1569int
1570afs_vop_print(ap)
1571 struct vop_print_args /* {
1572 * struct vnode *a_vp;
1573 * } */ *ap;
1574{
1575 struct vnode *vp = ap->a_vp;
1576 struct vcache *vc = VTOAFS(ap->a_vp);
1577 int s = vc->f.states;
1578
1579 printf("vc %p vp %p tag %s, fid: %d.%d.%d.%d, opens %d, writers %d", vc, vp, vp->v_tag,
1580 (int)vc->f.fid.Cell, (u_int) vc->f.fid.Fid.Volume,
1581 (u_int) vc->f.fid.Fid.Vnode, (u_int) vc->f.fid.Fid.Unique, vc->opens,
1582 vc->execsOrWriters);
1583 printf("\n states%s%s%s%s%s", (s & CStatd) ? " statd" : "",
1584 (s & CRO) ? " readonly" : "", (s & CDirty) ? " dirty" : "",
1585 (s & CMAPPED) ? " mapped" : "",
1586 (s & CVFlushed) ? " flush in progress" : "");
1587 printf("\n");
1588 return 0;
1589}
1590
1591/*
1592 * Advisory record locking support (fcntl() POSIX style)
1593 */
1594int
1595afs_vop_advlock(ap)
1596 struct vop_advlock_args /* {
1597 * struct vnode *a_vp;
1598 * caddr_t a_id;
1599 * int a_op;
1600 * struct flock *a_fl;
1601 * int a_flags;
1602 * } */ *ap;
1603{
1604 int error;
1605 struct ucred cr = *osi_curcred();
1606
1607 AFS_GLOCK();
1608 error =
1609 afs_lockctl(VTOAFS(ap->a_vp),
1610 ap->a_fl,
1611 ap->a_op, &cr,
1612 (int)(intptr_t)ap->a_id); /* XXX: no longer unique! */
1613 AFS_GUNLOCK();
1614 return error;
1615}
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