Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / vfs / ntfs / ntfs_vnops.c
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1/* $NetBSD: ntfs_vnops.c,v 1.23 1999/10/31 19:45:27 jdolecek Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * John Heidemann of the UCLA Ficus project.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * $FreeBSD: src/sys/ntfs/ntfs_vnops.c,v 1.9.2.4 2002/08/06 19:35:18 semenu Exp $
39 *
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/time.h>
46#include <sys/types.h>
47#include <sys/stat.h>
48#include <sys/vnode.h>
49#include <sys/mount.h>
50#include <sys/namei.h>
51#include <sys/malloc.h>
52#include <sys/buf.h>
53#include <sys/dirent.h>
54
55#include <vm/vm.h>
56#include <vm/vm_param.h>
57#if defined(__NetBSD__)
58#include <vm/vm_prot.h>
59#endif
60#include <vm/vm_page.h>
61#include <vm/vm_object.h>
62#include <vm/vm_pager.h>
63#if defined(__FreeBSD__)
64#include <vm/vnode_pager.h>
65#endif
66#include <vm/vm_extern.h>
67
68#include <sys/sysctl.h>
69
70/*#define NTFS_DEBUG 1*/
71#include <ntfs/ntfs.h>
72#include <ntfs/ntfs_inode.h>
73#include <ntfs/ntfs_subr.h>
74#if defined(__NetBSD__)
75#include <miscfs/specfs/specdev.h>
76#include <miscfs/genfs/genfs.h>
77#endif
78
79#include <sys/unistd.h> /* for pathconf(2) constants */
80
81static int ntfs_read __P((struct vop_read_args *));
82static int ntfs_write __P((struct vop_write_args *ap));
83static int ntfs_getattr __P((struct vop_getattr_args *ap));
84static int ntfs_inactive __P((struct vop_inactive_args *ap));
85static int ntfs_print __P((struct vop_print_args *ap));
86static int ntfs_reclaim __P((struct vop_reclaim_args *ap));
87static int ntfs_strategy __P((struct vop_strategy_args *ap));
88static int ntfs_access __P((struct vop_access_args *ap));
89static int ntfs_open __P((struct vop_open_args *ap));
90static int ntfs_close __P((struct vop_close_args *ap));
91static int ntfs_readdir __P((struct vop_readdir_args *ap));
92static int ntfs_lookup __P((struct vop_lookup_args *ap));
93static int ntfs_bmap __P((struct vop_bmap_args *ap));
94#if defined(__FreeBSD__)
95static int ntfs_getpages __P((struct vop_getpages_args *ap));
96static int ntfs_putpages __P((struct vop_putpages_args *));
97static int ntfs_fsync __P((struct vop_fsync_args *ap));
98#else
99static int ntfs_bypass __P((struct vop_generic_args *ap));
100#endif
101static int ntfs_pathconf __P((void *));
102
103int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
104
105#if defined(__FreeBSD__)
106int
107ntfs_getpages(ap)
108 struct vop_getpages_args *ap;
109{
110 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
111 ap->a_reqpage);
112}
113
114int
115ntfs_putpages(ap)
116 struct vop_putpages_args *ap;
117{
118 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
119 ap->a_sync, ap->a_rtvals);
120}
121#endif
122
123/*
124 * This is a noop, simply returning what one has been given.
125 */
126int
127ntfs_bmap(ap)
128 struct vop_bmap_args /* {
129 struct vnode *a_vp;
130 daddr_t a_bn;
131 struct vnode **a_vpp;
132 daddr_t *a_bnp;
133 int *a_runp;
134 int *a_runb;
135 } */ *ap;
136{
137 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
138 if (ap->a_vpp != NULL)
139 *ap->a_vpp = ap->a_vp;
140 if (ap->a_bnp != NULL)
141 *ap->a_bnp = ap->a_bn;
142 if (ap->a_runp != NULL)
143 *ap->a_runp = 0;
144#if !defined(__NetBSD__)
145 if (ap->a_runb != NULL)
146 *ap->a_runb = 0;
147#endif
148 return (0);
149}
150
151static int
152ntfs_read(ap)
153 struct vop_read_args /* {
154 struct vnode *a_vp;
155 struct uio *a_uio;
156 int a_ioflag;
157 struct ucred *a_cred;
158 } */ *ap;
159{
160 register struct vnode *vp = ap->a_vp;
161 register struct fnode *fp = VTOF(vp);
162 register struct ntnode *ip = FTONT(fp);
163 struct uio *uio = ap->a_uio;
164 struct ntfsmount *ntmp = ip->i_mp;
165 struct buf *bp;
166 daddr_t cn;
167 int resid, off, toread;
168 int error;
169
170 dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg));
171
172 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
173
174 /* don't allow reading after end of file */
175 if (uio->uio_offset > fp->f_size)
176 return (0);
177
178 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset);
179
180 dprintf((", resid: %d\n", resid));
181
182 error = 0;
183 while (resid) {
184 cn = ntfs_btocn(uio->uio_offset);
185 off = ntfs_btocnoff(uio->uio_offset);
186
187 toread = min(off + resid, ntfs_cntob(1));
188
189 error = bread(vp, cn, ntfs_cntob(1), NOCRED, &bp);
190 if (error) {
191 brelse(bp);
192 break;
193 }
194
195 error = uiomove(bp->b_data + off, toread - off, uio);
196 if(error) {
197 brelse(bp);
198 break;
199 }
200 brelse(bp);
201
202 resid -= toread - off;
203 }
204
205 return (error);
206}
207
208#if !defined(__FreeBSD__)
209
210static int
211ntfs_bypass(ap)
212 struct vop_generic_args /* {
213 struct vnodeop_desc *a_desc;
214 <other random data follows, presumably>
215 } */ *ap;
216{
217 int error = ENOTTY;
218 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
219 return (error);
220}
221
222#endif
223
224static int
225ntfs_getattr(ap)
226 struct vop_getattr_args /* {
227 struct vnode *a_vp;
228 struct vattr *a_vap;
229 struct ucred *a_cred;
230 struct proc *a_p;
231 } */ *ap;
232{
233 register struct vnode *vp = ap->a_vp;
234 register struct fnode *fp = VTOF(vp);
235 register struct ntnode *ip = FTONT(fp);
236 register struct vattr *vap = ap->a_vap;
237
238 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
239
240#if defined(__FreeBSD__)
241 vap->va_fsid = dev2udev(ip->i_dev);
242#else /* NetBSD */
243 vap->va_fsid = ip->i_dev;
244#endif
245 vap->va_fileid = ip->i_number;
246 vap->va_mode = ip->i_mp->ntm_mode;
247 vap->va_nlink = ip->i_nlink;
248 vap->va_uid = ip->i_mp->ntm_uid;
249 vap->va_gid = ip->i_mp->ntm_gid;
250 vap->va_rdev = 0; /* XXX UNODEV ? */
251 vap->va_size = fp->f_size;
252 vap->va_bytes = fp->f_allocated;
253 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
254 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
255 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
256 vap->va_flags = ip->i_flag;
257 vap->va_gen = 0;
258 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
259 vap->va_type = vp->v_type;
260 vap->va_filerev = 0;
261 return (0);
262}
263
264
265/*
266 * Last reference to an ntnode. If necessary, write or delete it.
267 */
268int
269ntfs_inactive(ap)
270 struct vop_inactive_args /* {
271 struct vnode *a_vp;
272 } */ *ap;
273{
274 register struct vnode *vp = ap->a_vp;
275#ifdef NTFS_DEBUG
276 register struct ntnode *ip = VTONT(vp);
277#endif
278
279 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
280
281 if (ntfs_prtactive && vp->v_usecount != 0)
282 vprint("ntfs_inactive: pushing active", vp);
283
284 VOP__UNLOCK(vp, 0, ap->a_p);
285
286 /* XXX since we don't support any filesystem changes
287 * right now, nothing more needs to be done
288 */
289 return (0);
290}
291
292/*
293 * Reclaim an fnode/ntnode so that it can be used for other purposes.
294 */
295int
296ntfs_reclaim(ap)
297 struct vop_reclaim_args /* {
298 struct vnode *a_vp;
299 } */ *ap;
300{
301 register struct vnode *vp = ap->a_vp;
302 register struct fnode *fp = VTOF(vp);
303 register struct ntnode *ip = FTONT(fp);
304 int error;
305
306 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
307
308 if (ntfs_prtactive && vp->v_usecount != 0)
309 vprint("ntfs_reclaim: pushing active", vp);
310
311 if ((error = ntfs_ntget(ip)) != 0)
312 return (error);
313
314 /* Purge old data structures associated with the inode. */
315 cache_purge(vp);
316
317 ntfs_frele(fp);
318 ntfs_ntput(ip);
319 vp->v_data = NULL;
320
321 return (0);
322}
323
324static int
325ntfs_print(ap)
326 struct vop_print_args /* {
327 struct vnode *a_vp;
328 } */ *ap;
329{
330 return (0);
331}
332
333/*
334 * Calculate the logical to physical mapping if not done already,
335 * then call the device strategy routine.
336 */
337int
338ntfs_strategy(ap)
339 struct vop_strategy_args /* {
340 struct buf *a_bp;
341 } */ *ap;
342{
343 register struct buf *bp = ap->a_bp;
344 register struct vnode *vp = bp->b_vp;
345 register struct fnode *fp = VTOF(vp);
346 register struct ntnode *ip = FTONT(fp);
347 struct ntfsmount *ntmp = ip->i_mp;
348 int error;
349
350#ifdef __FreeBSD__
351 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
352 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
353 (u_int32_t)bp->b_lblkno));
354#else
355 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
356 (u_int32_t)bp->b_blkno,
357 (u_int32_t)bp->b_lblkno));
358#endif
359
360 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
361 (u_int32_t)bp->b_bcount,bp->b_flags));
362
363 if (bp->b_flags & B_READ) {
364 u_int32_t toread;
365
366 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
367 clrbuf(bp);
368 error = 0;
369 } else {
370 toread = min(bp->b_bcount,
371 fp->f_size-ntfs_cntob(bp->b_blkno));
372 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
373 toread,(u_int32_t)fp->f_size));
374
375 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
376 fp->f_attrname, ntfs_cntob(bp->b_blkno),
377 toread, bp->b_data, NULL);
378
379 if (error) {
380 printf("ntfs_strategy: ntfs_readattr failed\n");
381 bp->b_error = error;
382 bp->b_flags |= B_ERROR;
383 }
384
385 bzero(bp->b_data + toread, bp->b_bcount - toread);
386 }
387 } else {
388 size_t tmp;
389 u_int32_t towrite;
390
391 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
392 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
393 bp->b_error = error = EFBIG;
394 bp->b_flags |= B_ERROR;
395 } else {
396 towrite = min(bp->b_bcount,
397 fp->f_size-ntfs_cntob(bp->b_blkno));
398 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
399 towrite,(u_int32_t)fp->f_size));
400
401 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
402 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
403 bp->b_data, &tmp, NULL);
404
405 if (error) {
406 printf("ntfs_strategy: ntfs_writeattr fail\n");
407 bp->b_error = error;
408 bp->b_flags |= B_ERROR;
409 }
410 }
411 }
412 biodone(bp);
413 return (error);
414}
415
416static int
417ntfs_write(ap)
418 struct vop_write_args /* {
419 struct vnode *a_vp;
420 struct uio *a_uio;
421 int a_ioflag;
422 struct ucred *a_cred;
423 } */ *ap;
424{
425 register struct vnode *vp = ap->a_vp;
426 register struct fnode *fp = VTOF(vp);
427 register struct ntnode *ip = FTONT(fp);
428 struct uio *uio = ap->a_uio;
429 struct ntfsmount *ntmp = ip->i_mp;
430 u_int64_t towrite;
431 size_t written;
432 int error;
433
434 dprintf(("ntfs_write: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg));
435 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
436
437 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
438 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
439 return (EFBIG);
440 }
441
442 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
443
444 dprintf((", towrite: %d\n",(u_int32_t)towrite));
445
446 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
447 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
448#ifdef NTFS_DEBUG
449 if (error)
450 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
451#endif
452
453 return (error);
454}
455
456int
457ntfs_access(ap)
458 struct vop_access_args /* {
459 struct vnode *a_vp;
460 int a_mode;
461 struct ucred *a_cred;
462 struct proc *a_p;
463 } */ *ap;
464{
465 struct vnode *vp = ap->a_vp;
466 struct ntnode *ip = VTONT(vp);
467 struct ucred *cred = ap->a_cred;
468 mode_t mask, mode = ap->a_mode;
469 register gid_t *gp;
470 int i;
471#ifdef QUOTA
472 int error;
473#endif
474
475 dprintf(("ntfs_access: %d\n",ip->i_number));
476
477 /*
478 * Disallow write attempts on read-only file systems;
479 * unless the file is a socket, fifo, or a block or
480 * character device resident on the file system.
481 */
482 if (mode & VWRITE) {
483 switch ((int)vp->v_type) {
484 case VDIR:
485 case VLNK:
486 case VREG:
487 if (vp->v_mount->mnt_flag & MNT_RDONLY)
488 return (EROFS);
489#ifdef QUOTA
490 if (error = getinoquota(ip))
491 return (error);
492#endif
493 break;
494 }
495 }
496
497 /* Otherwise, user id 0 always gets access. */
498 if (cred->cr_uid == 0)
499 return (0);
500
501 mask = 0;
502
503 /* Otherwise, check the owner. */
504 if (cred->cr_uid == ip->i_mp->ntm_uid) {
505 if (mode & VEXEC)
506 mask |= S_IXUSR;
507 if (mode & VREAD)
508 mask |= S_IRUSR;
509 if (mode & VWRITE)
510 mask |= S_IWUSR;
511 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
512 }
513
514 /* Otherwise, check the groups. */
515 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
516 if (ip->i_mp->ntm_gid == *gp) {
517 if (mode & VEXEC)
518 mask |= S_IXGRP;
519 if (mode & VREAD)
520 mask |= S_IRGRP;
521 if (mode & VWRITE)
522 mask |= S_IWGRP;
523 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
524 }
525
526 /* Otherwise, check everyone else. */
527 if (mode & VEXEC)
528 mask |= S_IXOTH;
529 if (mode & VREAD)
530 mask |= S_IROTH;
531 if (mode & VWRITE)
532 mask |= S_IWOTH;
533 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
534}
535
536/*
537 * Open called.
538 *
539 * Nothing to do.
540 */
541/* ARGSUSED */
542static int
543ntfs_open(ap)
544 struct vop_open_args /* {
545 struct vnode *a_vp;
546 int a_mode;
547 struct ucred *a_cred;
548 struct proc *a_p;
549 } */ *ap;
550{
551#if NTFS_DEBUG
552 register struct vnode *vp = ap->a_vp;
553 register struct ntnode *ip = VTONT(vp);
554
555 printf("ntfs_open: %d\n",ip->i_number);
556#endif
557
558 /*
559 * Files marked append-only must be opened for appending.
560 */
561
562 return (0);
563}
564
565/*
566 * Close called.
567 *
568 * Update the times on the inode.
569 */
570/* ARGSUSED */
571static int
572ntfs_close(ap)
573 struct vop_close_args /* {
574 struct vnode *a_vp;
575 int a_fflag;
576 struct ucred *a_cred;
577 struct proc *a_p;
578 } */ *ap;
579{
580#if NTFS_DEBUG
581 register struct vnode *vp = ap->a_vp;
582 register struct ntnode *ip = VTONT(vp);
583
584 printf("ntfs_close: %d\n",ip->i_number);
585#endif
586
587 return (0);
588}
589
590int
591ntfs_readdir(ap)
592 struct vop_readdir_args /* {
593 struct vnode *a_vp;
594 struct uio *a_uio;
595 struct ucred *a_cred;
596 int *a_ncookies;
597 u_int **cookies;
598 } */ *ap;
599{
600 register struct vnode *vp = ap->a_vp;
601 register struct fnode *fp = VTOF(vp);
602 register struct ntnode *ip = FTONT(fp);
603 struct uio *uio = ap->a_uio;
604 struct ntfsmount *ntmp = ip->i_mp;
605 int i, error = 0;
606 u_int32_t faked = 0, num;
607 int ncookies = 0;
608 struct dirent cde;
609 off_t off;
610
611 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
612
613 off = uio->uio_offset;
614
615 /* Simulate . in every dir except ROOT */
616 if( ip->i_number != NTFS_ROOTINO ) {
617 struct dirent dot = { NTFS_ROOTINO,
618 sizeof(struct dirent), DT_DIR, 1, "." };
619
620 if( uio->uio_offset < sizeof(struct dirent) ) {
621 dot.d_fileno = ip->i_number;
622 error = uiomove((char *)&dot,sizeof(struct dirent),uio);
623 if(error)
624 return (error);
625
626 ncookies ++;
627 }
628 }
629
630 /* Simulate .. in every dir including ROOT */
631 if( uio->uio_offset < 2 * sizeof(struct dirent) ) {
632 struct dirent dotdot = { NTFS_ROOTINO,
633 sizeof(struct dirent), DT_DIR, 2, ".." };
634
635 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio);
636 if(error)
637 return (error);
638
639 ncookies ++;
640 }
641
642 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
643 num = uio->uio_offset / sizeof(struct dirent) - faked;
644
645 while( uio->uio_resid >= sizeof(struct dirent) ) {
646 struct attr_indexentry *iep;
647
648 error = ntfs_ntreaddir(ntmp, fp, num, &iep);
649
650 if(error)
651 return (error);
652
653 if( NULL == iep )
654 break;
655
656 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
657 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
658 {
659 if(!ntfs_isnamepermitted(ntmp,iep))
660 continue;
661
662 for(i=0; i<iep->ie_fnamelen; i++) {
663 cde.d_name[i] = NTFS_U28(iep->ie_fname[i]);
664 }
665 cde.d_name[i] = '\0';
666 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
667 num, cde.d_name, iep->ie_fnametype,
668 iep->ie_flag));
669 cde.d_namlen = iep->ie_fnamelen;
670 cde.d_fileno = iep->ie_number;
671 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
672 cde.d_reclen = sizeof(struct dirent);
673 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg"));
674
675 error = uiomove((char *)&cde, sizeof(struct dirent), uio);
676 if(error)
677 return (error);
678
679 ncookies++;
680 num++;
681 }
682 }
683
684 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
685 ncookies,(u_int)(uio->uio_offset - off)));
686 dprintf(("ntfs_readdir: off: %d resid: %d\n",
687 (u_int32_t)uio->uio_offset,uio->uio_resid));
688
689 if (!error && ap->a_ncookies != NULL) {
690 struct dirent* dpStart;
691 struct dirent* dp;
692#if defined(__FreeBSD__)
693 u_long *cookies;
694 u_long *cookiep;
695#else /* defined(__NetBSD__) */
696 off_t *cookies;
697 off_t *cookiep;
698#endif
699
700 ddprintf(("ntfs_readdir: %d cookies\n",ncookies));
701 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
702 panic("ntfs_readdir: unexpected uio from NFS server");
703 dpStart = (struct dirent *)
704 ((caddr_t)uio->uio_iov->iov_base -
705 (uio->uio_offset - off));
706#if defined(__FreeBSD__)
707 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
708 M_TEMP, M_WAITOK);
709#else /* defined(__NetBSD__) */
710 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
711 M_TEMP, M_WAITOK);
712#endif
713 for (dp = dpStart, cookiep = cookies, i=0;
714 i < ncookies;
715 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
716 off += dp->d_reclen;
717 *cookiep++ = (u_int) off;
718 }
719 *ap->a_ncookies = ncookies;
720 *ap->a_cookies = cookies;
721 }
722/*
723 if (ap->a_eofflag)
724 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
725*/
726 return (error);
727}
728
729int
730ntfs_lookup(ap)
731 struct vop_lookup_args /* {
732 struct vnode *a_dvp;
733 struct vnode **a_vpp;
734 struct componentname *a_cnp;
735 } */ *ap;
736{
737 register struct vnode *dvp = ap->a_dvp;
738 register struct ntnode *dip = VTONT(dvp);
739 struct ntfsmount *ntmp = dip->i_mp;
740 struct componentname *cnp = ap->a_cnp;
741 struct ucred *cred = cnp->cn_cred;
742 int error;
743 int lockparent = cnp->cn_flags & LOCKPARENT;
744#if NTFS_DEBUG
745 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
746#endif
747 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
748 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
749 dip->i_number, lockparent, wantparent));
750
751 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
752 if(error)
753 return (error);
754
755 if ((cnp->cn_flags & ISLASTCN) &&
756 (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
757 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
758 return (EROFS);
759
760#ifdef __NetBSD__
761 /*
762 * We now have a segment name to search for, and a directory
763 * to search.
764 *
765 * Before tediously performing a linear scan of the directory,
766 * check the name cache to see if the directory/name pair
767 * we are looking for is known already.
768 */
769 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
770 return (error);
771#endif
772
773 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
774 dprintf(("ntfs_lookup: faking . directory in %d\n",
775 dip->i_number));
776
777 VREF(dvp);
778 *ap->a_vpp = dvp;
779 error = 0;
780 } else if (cnp->cn_flags & ISDOTDOT) {
781 struct ntvattr *vap;
782
783 dprintf(("ntfs_lookup: faking .. directory in %d\n",
784 dip->i_number));
785
786 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
787 if(error)
788 return (error);
789
790 VOP__UNLOCK(dvp,0,cnp->cn_proc);
791 cnp->cn_flags |= PDIRUNLOCK;
792
793 dprintf(("ntfs_lookup: parentdir: %d\n",
794 vap->va_a_name->n_pnumber));
795 error = VFS_VGET(ntmp->ntm_mountp,
796 vap->va_a_name->n_pnumber,ap->a_vpp);
797 ntfs_ntvattrrele(vap);
798 if (error) {
799 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_proc)==0)
800 cnp->cn_flags &= ~PDIRUNLOCK;
801 return (error);
802 }
803
804 if (lockparent && (cnp->cn_flags & ISLASTCN)) {
805 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_proc);
806 if (error) {
807 vput( *(ap->a_vpp) );
808 return (error);
809 }
810 cnp->cn_flags &= ~PDIRUNLOCK;
811 }
812 } else {
813 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
814 if (error) {
815 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
816 return (error);
817 }
818
819 dprintf(("ntfs_lookup: found ino: %d\n",
820 VTONT(*ap->a_vpp)->i_number));
821
822 if(!lockparent || !(cnp->cn_flags & ISLASTCN))
823 VOP__UNLOCK(dvp, 0, cnp->cn_proc);
824 }
825
826 if (cnp->cn_flags & MAKEENTRY)
827 cache_enter(dvp, *ap->a_vpp, cnp);
828
829 return (error);
830}
831
832#if defined(__FreeBSD__)
833/*
834 * Flush the blocks of a file to disk.
835 *
836 * This function is worthless for vnodes that represent directories. Maybe we
837 * could just do a sync if they try an fsync on a directory file.
838 */
839static int
840ntfs_fsync(ap)
841 struct vop_fsync_args /* {
842 struct vnode *a_vp;
843 struct ucred *a_cred;
844 int a_waitfor;
845 struct proc *a_p;
846 } */ *ap;
847{
848 return (0);
849}
850#endif
851
852/*
853 * Return POSIX pathconf information applicable to NTFS filesystem
854 */
855int
856ntfs_pathconf(v)
857 void *v;
858{
859 struct vop_pathconf_args /* {
860 struct vnode *a_vp;
861 int a_name;
862 register_t *a_retval;
863 } */ *ap = v;
864
865 switch (ap->a_name) {
866 case _PC_LINK_MAX:
867 *ap->a_retval = 1;
868 return (0);
869 case _PC_NAME_MAX:
870 *ap->a_retval = NTFS_MAXFILENAME;
871 return (0);
872 case _PC_PATH_MAX:
873 *ap->a_retval = PATH_MAX;
874 return (0);
875 case _PC_CHOWN_RESTRICTED:
876 *ap->a_retval = 1;
877 return (0);
878 case _PC_NO_TRUNC:
879 *ap->a_retval = 0;
880 return (0);
881#if defined(__NetBSD__)
882 case _PC_SYNC_IO:
883 *ap->a_retval = 1;
884 return (0);
885 case _PC_FILESIZEBITS:
886 *ap->a_retval = 64;
887 return (0);
888#endif
889 default:
890 return (EINVAL);
891 }
892 /* NOTREACHED */
893}
894
895/*
896 * Global vfs data structures
897 */
898vop_t **ntfs_vnodeop_p;
899#if defined(__FreeBSD__)
900static
901struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
902 { &vop_default_desc, (vop_t *)vop_defaultop },
903
904 { &vop_getattr_desc, (vop_t *)ntfs_getattr },
905 { &vop_inactive_desc, (vop_t *)ntfs_inactive },
906 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
907 { &vop_print_desc, (vop_t *)ntfs_print },
908 { &vop_pathconf_desc, ntfs_pathconf },
909
910 { &vop_islocked_desc, (vop_t *)vop_stdislocked },
911 { &vop_unlock_desc, (vop_t *)vop_stdunlock },
912 { &vop_lock_desc, (vop_t *)vop_stdlock },
913 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
914 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
915
916 { &vop_access_desc, (vop_t *)ntfs_access },
917 { &vop_close_desc, (vop_t *)ntfs_close },
918 { &vop_open_desc, (vop_t *)ntfs_open },
919 { &vop_readdir_desc, (vop_t *)ntfs_readdir },
920 { &vop_fsync_desc, (vop_t *)ntfs_fsync },
921
922 { &vop_bmap_desc, (vop_t *)ntfs_bmap },
923 { &vop_getpages_desc, (vop_t *) ntfs_getpages },
924 { &vop_putpages_desc, (vop_t *) ntfs_putpages },
925 { &vop_strategy_desc, (vop_t *)ntfs_strategy },
926 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
927 { &vop_read_desc, (vop_t *)ntfs_read },
928 { &vop_write_desc, (vop_t *)ntfs_write },
929
930 { NULL, NULL }
931};
932
933static
934struct vnodeopv_desc ntfs_vnodeop_opv_desc =
935 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
936
937VNODEOP_SET(ntfs_vnodeop_opv_desc);
938
939#else /* !FreeBSD */
940
941struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
942 { &vop_default_desc, (vop_t *) ntfs_bypass },
943 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
944 { &vop_create_desc, genfs_eopnotsupp }, /* create */
945 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
946 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */
947 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */
948 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */
949 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
950 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
951 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */
952 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */
953 { &vop_lease_desc, genfs_lease_check }, /* lease */
954 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
955 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
956 { &vop_poll_desc, genfs_poll }, /* poll */
957 { &vop_revoke_desc, genfs_revoke }, /* revoke */
958 { &vop_mmap_desc, genfs_eopnotsupp }, /* mmap */
959 { &vop_fsync_desc, genfs_fsync }, /* fsync */
960 { &vop_seek_desc, genfs_seek }, /* seek */
961 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */
962 { &vop_link_desc, genfs_eopnotsupp }, /* link */
963 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */
964 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
965 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
966 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
967 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
968 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
969 { &vop_abortop_desc, genfs_abortop }, /* abortop */
970 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
971 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
972 { &vop_lock_desc, genfs_lock }, /* lock */
973 { &vop_unlock_desc, genfs_unlock }, /* unlock */
974 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
975 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
976 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */
977 { &vop_islocked_desc, genfs_islocked }, /* islocked */
978 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
979 { &vop_advlock_desc, genfs_nullop }, /* advlock */
980 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */
981 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */
982 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */
983 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */
984 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */
985 { &vop_update_desc, genfs_eopnotsupp }, /* update */
986 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
987 { (struct vnodeop_desc *)NULL, (int (*) __P((void *)))NULL }
988};
989struct vnodeopv_desc ntfs_vnodeop_opv_desc =
990 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
991
992#endif