1 /* $NetBSD: ntfs_vnops.c,v 1.21 2005/02/26 22:58:55 perry 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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp
35 *
36 */
37
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.21 2005/02/26 22:58:55 perry Exp $");
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/time.h>
45 #include <sys/stat.h>
46 #include <sys/vnode.h>
47 #include <sys/mount.h>
48 #include <sys/namei.h>
49 #include <sys/malloc.h>
50 #include <sys/buf.h>
51 #include <sys/dirent.h>
52
53 #if !defined(__NetBSD__)
54 #include <vm/vm.h>
55 #endif
56
57 #if defined(__FreeBSD__)
58 #include <vm/vnode_pager.h>
59 #endif
60
61 #include <sys/sysctl.h>
62
63
64 /*#define NTFS_DEBUG 1*/
65 #include <fs/ntfs/ntfs.h>
66 #include <fs/ntfs/ntfs_inode.h>
67 #include <fs/ntfs/ntfs_subr.h>
68 #include <miscfs/specfs/specdev.h>
69 #include <miscfs/genfs/genfs.h>
70
71 #include <sys/unistd.h> /* for pathconf(2) constants */
72
73 static int ntfs_bypass __P((struct vop_generic_args *ap));
74 static int ntfs_read __P((struct vop_read_args *));
75 static int ntfs_write __P((struct vop_write_args *ap));
76 static int ntfs_getattr __P((struct vop_getattr_args *ap));
77 static int ntfs_inactive __P((struct vop_inactive_args *ap));
78 static int ntfs_print __P((struct vop_print_args *ap));
79 static int ntfs_reclaim __P((struct vop_reclaim_args *ap));
80 static int ntfs_strategy __P((struct vop_strategy_args *ap));
81 static int ntfs_access __P((struct vop_access_args *ap));
82 static int ntfs_open __P((struct vop_open_args *ap));
83 static int ntfs_close __P((struct vop_close_args *ap));
84 static int ntfs_readdir __P((struct vop_readdir_args *ap));
85 static int ntfs_lookup __P((struct vop_lookup_args *ap));
86 static int ntfs_bmap __P((struct vop_bmap_args *ap));
87 #if defined(__FreeBSD__)
88 static int ntfs_getpages __P((struct vop_getpages_args *ap));
89 static int ntfs_putpages __P((struct vop_putpages_args *));
90 static int ntfs_fsync __P((struct vop_fsync_args *ap));
91 #endif
92 static int ntfs_pathconf __P((void *));
93
94 extern int prtactive;
95
96 #if defined(__FreeBSD__)
97 int
98 ntfs_getpages(ap)
99 struct vop_getpages_args *ap;
100 {
101 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
102 ap->a_reqpage);
103 }
104
105 int
106 ntfs_putpages(ap)
107 struct vop_putpages_args *ap;
108 {
109 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
110 ap->a_sync, ap->a_rtvals);
111 }
112 #endif
113
114 /*
115 * This is a noop, simply returning what one has been given.
116 */
117 int
118 ntfs_bmap(ap)
119 struct vop_bmap_args /* {
120 struct vnode *a_vp;
121 daddr_t a_bn;
122 struct vnode **a_vpp;
123 daddr_t *a_bnp;
124 int *a_runp;
125 int *a_runb;
126 } */ *ap;
127 {
128 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
129 if (ap->a_vpp != NULL)
130 *ap->a_vpp = ap->a_vp;
131 if (ap->a_bnp != NULL)
132 *ap->a_bnp = ap->a_bn;
133 if (ap->a_runp != NULL)
134 *ap->a_runp = 0;
135 #if !defined(__NetBSD__)
136 if (ap->a_runb != NULL)
137 *ap->a_runb = 0;
138 #endif
139 return (0);
140 }
141
142 static int
143 ntfs_read(ap)
144 struct vop_read_args /* {
145 struct vnode *a_vp;
146 struct uio *a_uio;
147 int a_ioflag;
148 struct ucred *a_cred;
149 } */ *ap;
150 {
151 struct vnode *vp = ap->a_vp;
152 struct fnode *fp = VTOF(vp);
153 struct ntnode *ip = FTONT(fp);
154 struct uio *uio = ap->a_uio;
155 struct ntfsmount *ntmp = ip->i_mp;
156 u_int64_t toread;
157 int error;
158
159 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));
160
161 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
162
163 /* don't allow reading after end of file */
164 if (uio->uio_offset > fp->f_size)
165 toread = 0;
166 else
167 toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset );
168
169 dprintf((", toread: %d\n",(u_int32_t)toread));
170
171 if (toread == 0)
172 return (0);
173
174 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
175 fp->f_attrname, uio->uio_offset, toread, NULL, uio);
176 if (error) {
177 printf("ntfs_read: ntfs_readattr failed: %d\n",error);
178 return (error);
179 }
180
181 return (0);
182 }
183
184 static int
185 ntfs_bypass(ap)
186 struct vop_generic_args /* {
187 struct vnodeop_desc *a_desc;
188 <other random data follows, presumably>
189 } */ *ap;
190 {
191 int error = ENOTTY;
192 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
193 return (error);
194 }
195
196
197 static int
198 ntfs_getattr(ap)
199 struct vop_getattr_args /* {
200 struct vnode *a_vp;
201 struct vattr *a_vap;
202 struct ucred *a_cred;
203 struct proc *a_p;
204 } */ *ap;
205 {
206 struct vnode *vp = ap->a_vp;
207 struct fnode *fp = VTOF(vp);
208 struct ntnode *ip = FTONT(fp);
209 struct vattr *vap = ap->a_vap;
210
211 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
212
213 #if defined(__FreeBSD__)
214 vap->va_fsid = dev2udev(ip->i_dev);
215 #else /* NetBSD */
216 vap->va_fsid = ip->i_dev;
217 #endif
218 vap->va_fileid = ip->i_number;
219 vap->va_mode = ip->i_mp->ntm_mode;
220 vap->va_nlink = ip->i_nlink;
221 vap->va_uid = ip->i_mp->ntm_uid;
222 vap->va_gid = ip->i_mp->ntm_gid;
223 vap->va_rdev = 0; /* XXX UNODEV ? */
224 vap->va_size = fp->f_size;
225 vap->va_bytes = fp->f_allocated;
226 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
227 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
228 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
229 vap->va_flags = ip->i_flag;
230 vap->va_gen = 0;
231 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
232 vap->va_type = vp->v_type;
233 vap->va_filerev = 0;
234 return (0);
235 }
236
237
238 /*
239 * Last reference to an ntnode. If necessary, write or delete it.
240 */
241 int
242 ntfs_inactive(ap)
243 struct vop_inactive_args /* {
244 struct vnode *a_vp;
245 } */ *ap;
246 {
247 struct vnode *vp = ap->a_vp;
248 #ifdef NTFS_DEBUG
249 struct ntnode *ip = VTONT(vp);
250 #endif
251
252 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
253
254 if (prtactive && vp->v_usecount != 0)
255 vprint("ntfs_inactive: pushing active", vp);
256
257 VOP_UNLOCK(vp, 0);
258
259 /* XXX since we don't support any filesystem changes
260 * right now, nothing more needs to be done
261 */
262 return (0);
263 }
264
265 /*
266 * Reclaim an fnode/ntnode so that it can be used for other purposes.
267 */
268 int
269 ntfs_reclaim(ap)
270 struct vop_reclaim_args /* {
271 struct vnode *a_vp;
272 } */ *ap;
273 {
274 struct vnode *vp = ap->a_vp;
275 struct fnode *fp = VTOF(vp);
276 struct ntnode *ip = FTONT(fp);
277 int error;
278
279 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
280
281 if (prtactive && vp->v_usecount != 0)
282 vprint("ntfs_reclaim: pushing active", vp);
283
284 if ((error = ntfs_ntget(ip)) != 0)
285 return (error);
286
287 /* Purge old data structures associated with the inode. */
288 cache_purge(vp);
289 if (ip->i_devvp) {
290 vrele(ip->i_devvp);
291 ip->i_devvp = NULL;
292 }
293
294 ntfs_frele(fp);
295 ntfs_ntput(ip);
296 vp->v_data = NULL;
297
298 return (0);
299 }
300
301 static int
302 ntfs_print(ap)
303 struct vop_print_args /* {
304 struct vnode *a_vp;
305 } */ *ap;
306 {
307 struct ntnode *ip = VTONT(ap->a_vp);
308
309 printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n",
310 ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink);
311 printf(" ");
312 lockmgr_printinfo(ap->a_vp->v_vnlock);
313 printf("\n");
314 return (0);
315 }
316
317 /*
318 * Calculate the logical to physical mapping if not done already,
319 * then call the device strategy routine.
320 */
321 int
322 ntfs_strategy(ap)
323 struct vop_strategy_args /* {
324 struct vnode *a_vp;
325 struct buf *a_bp;
326 } */ *ap;
327 {
328 struct buf *bp = ap->a_bp;
329 struct vnode *vp = ap->a_vp;
330 struct fnode *fp = VTOF(vp);
331 struct ntnode *ip = FTONT(fp);
332 struct ntfsmount *ntmp = ip->i_mp;
333 int error;
334
335 #ifdef __FreeBSD__
336 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
337 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
338 (u_int32_t)bp->b_lblkno));
339 #else
340 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
341 (u_int32_t)bp->b_blkno,
342 (u_int32_t)bp->b_lblkno));
343 #endif
344
345 dprintf(("strategy: bcount: %u flags: 0x%x\n",
346 (u_int32_t)bp->b_bcount,bp->b_flags));
347
348 if (bp->b_flags & B_READ) {
349 u_int32_t toread;
350
351 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
352 clrbuf(bp);
353 error = 0;
354 } else {
355 toread = MIN(bp->b_bcount,
356 fp->f_size - ntfs_cntob(bp->b_blkno));
357 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
358 toread,(u_int32_t)fp->f_size));
359
360 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
361 fp->f_attrname, ntfs_cntob(bp->b_blkno),
362 toread, bp->b_data, NULL);
363
364 if (error) {
365 printf("ntfs_strategy: ntfs_readattr failed\n");
366 bp->b_error = error;
367 bp->b_flags |= B_ERROR;
368 }
369
370 bzero(bp->b_data + toread, bp->b_bcount - toread);
371 }
372 } else {
373 size_t tmp;
374 u_int32_t towrite;
375
376 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
377 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
378 bp->b_error = error = EFBIG;
379 bp->b_flags |= B_ERROR;
380 } else {
381 towrite = MIN(bp->b_bcount,
382 fp->f_size - ntfs_cntob(bp->b_blkno));
383 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
384 towrite,(u_int32_t)fp->f_size));
385
386 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
387 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
388 bp->b_data, &tmp, NULL);
389
390 if (error) {
391 printf("ntfs_strategy: ntfs_writeattr fail\n");
392 bp->b_error = error;
393 bp->b_flags |= B_ERROR;
394 }
395 }
396 }
397 biodone(bp);
398 return (error);
399 }
400
401 static int
402 ntfs_write(ap)
403 struct vop_write_args /* {
404 struct vnode *a_vp;
405 struct uio *a_uio;
406 int a_ioflag;
407 struct ucred *a_cred;
408 } */ *ap;
409 {
410 struct vnode *vp = ap->a_vp;
411 struct fnode *fp = VTOF(vp);
412 struct ntnode *ip = FTONT(fp);
413 struct uio *uio = ap->a_uio;
414 struct ntfsmount *ntmp = ip->i_mp;
415 u_int64_t towrite;
416 size_t written;
417 int error;
418
419 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));
420 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
421
422 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
423 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
424 return (EFBIG);
425 }
426
427 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset);
428
429 dprintf((", towrite: %d\n",(u_int32_t)towrite));
430
431 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
432 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
433 #ifdef NTFS_DEBUG
434 if (error)
435 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
436 #endif
437
438 return (error);
439 }
440
441 int
442 ntfs_access(ap)
443 struct vop_access_args /* {
444 struct vnode *a_vp;
445 int a_mode;
446 struct ucred *a_cred;
447 struct proc *a_p;
448 } */ *ap;
449 {
450 struct vnode *vp = ap->a_vp;
451 struct ntnode *ip = VTONT(vp);
452 struct ucred *cred = ap->a_cred;
453 mode_t mask, mode = ap->a_mode;
454 gid_t *gp;
455 int i;
456
457 dprintf(("ntfs_access: %d\n",ip->i_number));
458
459 /*
460 * Disallow write attempts on read-only file systems;
461 * unless the file is a socket, fifo, or a block or
462 * character device resident on the file system.
463 */
464 if (mode & VWRITE) {
465 switch ((int)vp->v_type) {
466 case VDIR:
467 case VLNK:
468 case VREG:
469 if (vp->v_mount->mnt_flag & MNT_RDONLY)
470 return (EROFS);
471 break;
472 }
473 }
474
475 /* Otherwise, user id 0 always gets access. */
476 if (cred->cr_uid == 0)
477 return (0);
478
479 mask = 0;
480
481 /* Otherwise, check the owner. */
482 if (cred->cr_uid == ip->i_mp->ntm_uid) {
483 if (mode & VEXEC)
484 mask |= S_IXUSR;
485 if (mode & VREAD)
486 mask |= S_IRUSR;
487 if (mode & VWRITE)
488 mask |= S_IWUSR;
489 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
490 }
491
492 /* Otherwise, check the groups. */
493 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
494 if (ip->i_mp->ntm_gid == *gp) {
495 if (mode & VEXEC)
496 mask |= S_IXGRP;
497 if (mode & VREAD)
498 mask |= S_IRGRP;
499 if (mode & VWRITE)
500 mask |= S_IWGRP;
501 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
502 }
503
504 /* Otherwise, check everyone else. */
505 if (mode & VEXEC)
506 mask |= S_IXOTH;
507 if (mode & VREAD)
508 mask |= S_IROTH;
509 if (mode & VWRITE)
510 mask |= S_IWOTH;
511 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
512 }
513
514 /*
515 * Open called.
516 *
517 * Nothing to do.
518 */
519 /* ARGSUSED */
520 static int
521 ntfs_open(ap)
522 struct vop_open_args /* {
523 struct vnode *a_vp;
524 int a_mode;
525 struct ucred *a_cred;
526 struct proc *a_p;
527 } */ *ap;
528 {
529 #if NTFS_DEBUG
530 struct vnode *vp = ap->a_vp;
531 struct ntnode *ip = VTONT(vp);
532
533 printf("ntfs_open: %d\n",ip->i_number);
534 #endif
535
536 /*
537 * Files marked append-only must be opened for appending.
538 */
539
540 return (0);
541 }
542
543 /*
544 * Close called.
545 *
546 * Update the times on the inode.
547 */
548 /* ARGSUSED */
549 static int
550 ntfs_close(ap)
551 struct vop_close_args /* {
552 struct vnode *a_vp;
553 int a_fflag;
554 struct ucred *a_cred;
555 struct proc *a_p;
556 } */ *ap;
557 {
558 #if NTFS_DEBUG
559 struct vnode *vp = ap->a_vp;
560 struct ntnode *ip = VTONT(vp);
561
562 printf("ntfs_close: %d\n",ip->i_number);
563 #endif
564
565 return (0);
566 }
567
568 int
569 ntfs_readdir(ap)
570 struct vop_readdir_args /* {
571 struct vnode *a_vp;
572 struct uio *a_uio;
573 struct ucred *a_cred;
574 int *a_ncookies;
575 u_int **cookies;
576 } */ *ap;
577 {
578 struct vnode *vp = ap->a_vp;
579 struct fnode *fp = VTOF(vp);
580 struct ntnode *ip = FTONT(fp);
581 struct uio *uio = ap->a_uio;
582 struct ntfsmount *ntmp = ip->i_mp;
583 int i, error = 0;
584 u_int32_t faked = 0, num;
585 int ncookies = 0;
586 struct dirent *cde;
587 off_t off;
588
589 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
590
591 off = uio->uio_offset;
592
593 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK);
594
595 /* Simulate . in every dir except ROOT */
596 if (ip->i_number != NTFS_ROOTINO
597 && uio->uio_offset < sizeof(struct dirent)) {
598 cde->d_fileno = ip->i_number;
599 cde->d_reclen = sizeof(struct dirent);
600 cde->d_type = DT_DIR;
601 cde->d_namlen = 1;
602 strncpy(cde->d_name, ".", 2);
603 error = uiomove((void *)cde, sizeof(struct dirent), uio);
604 if (error)
605 goto out;
606
607 ncookies++;
608 }
609
610 /* Simulate .. in every dir including ROOT */
611 if (uio->uio_offset < 2 * sizeof(struct dirent)) {
612 cde->d_fileno = NTFS_ROOTINO; /* XXX */
613 cde->d_reclen = sizeof(struct dirent);
614 cde->d_type = DT_DIR;
615 cde->d_namlen = 2;
616 strncpy(cde->d_name, "..", 3);
617
618 error = uiomove((void *) cde, sizeof(struct dirent), uio);
619 if (error)
620 goto out;
621
622 ncookies++;
623 }
624
625 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
626 num = uio->uio_offset / sizeof(struct dirent) - faked;
627
628 while (uio->uio_resid >= sizeof(struct dirent)) {
629 struct attr_indexentry *iep;
630 char *fname;
631 size_t remains;
632 int sz;
633
634 error = ntfs_ntreaddir(ntmp, fp, num, &iep);
635 if (error)
636 goto out;
637
638 if (NULL == iep)
639 break;
640
641 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
642 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
643 {
644 if(!ntfs_isnamepermitted(ntmp,iep))
645 continue;
646
647 remains = sizeof(cde->d_name) - 1;
648 fname = cde->d_name;
649 for(i=0; i<iep->ie_fnamelen; i++) {
650 sz = (*ntmp->ntm_wput)(fname, remains,
651 iep->ie_fname[i]);
652 fname += sz;
653 remains -= sz;
654 }
655 *fname = '\0';
656 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
657 num, cde->d_name, iep->ie_fnametype,
658 iep->ie_flag));
659 cde->d_namlen = fname - (char *) cde->d_name;
660 cde->d_fileno = iep->ie_number;
661 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
662 cde->d_reclen = sizeof(struct dirent);
663 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg"));
664
665 error = uiomove((void *)cde, sizeof(struct dirent), uio);
666 if (error)
667 goto out;
668
669 ncookies++;
670 num++;
671 }
672 }
673
674 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
675 ncookies,(u_int)(uio->uio_offset - off)));
676 dprintf(("ntfs_readdir: off: %d resid: %d\n",
677 (u_int32_t)uio->uio_offset,uio->uio_resid));
678
679 if (!error && ap->a_ncookies != NULL) {
680 struct dirent* dpStart;
681 struct dirent* dp;
682 #if defined(__FreeBSD__)
683 u_long *cookies;
684 u_long *cookiep;
685 #else /* defined(__NetBSD__) */
686 off_t *cookies;
687 off_t *cookiep;
688 #endif
689
690 dprintf(("ntfs_readdir: %d cookies\n",ncookies));
691 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
692 panic("ntfs_readdir: unexpected uio from NFS server");
693 dpStart = (struct dirent *)
694 ((caddr_t)uio->uio_iov->iov_base -
695 (uio->uio_offset - off));
696 #if defined(__FreeBSD__)
697 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
698 M_TEMP, M_WAITOK);
699 #else /* defined(__NetBSD__) */
700 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
701 #endif
702 for (dp = dpStart, cookiep = cookies, i=0;
703 i < ncookies;
704 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
705 off += dp->d_reclen;
706 *cookiep++ = (u_int) off;
707 }
708 *ap->a_ncookies = ncookies;
709 *ap->a_cookies = cookies;
710 }
711 /*
712 if (ap->a_eofflag)
713 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
714 */
715 out:
716 FREE(cde, M_TEMP);
717 return (error);
718 }
719
720 int
721 ntfs_lookup(ap)
722 struct vop_lookup_args /* {
723 struct vnode *a_dvp;
724 struct vnode **a_vpp;
725 struct componentname *a_cnp;
726 } */ *ap;
727 {
728 struct vnode *dvp = ap->a_dvp;
729 struct ntnode *dip = VTONT(dvp);
730 struct ntfsmount *ntmp = dip->i_mp;
731 struct componentname *cnp = ap->a_cnp;
732 struct ucred *cred = cnp->cn_cred;
733 int error;
734 int lockparent = cnp->cn_flags & LOCKPARENT;
735 #if NTFS_DEBUG
736 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
737 #endif
738 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
739 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
740 dip->i_number, lockparent, wantparent));
741
742 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
743 if(error)
744 return (error);
745
746 if ((cnp->cn_flags & ISLASTCN) &&
747 (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
748 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
749 return (EROFS);
750
751 #ifdef __NetBSD__
752 /*
753 * We now have a segment name to search for, and a directory
754 * to search.
755 *
756 * Before tediously performing a linear scan of the directory,
757 * check the name cache to see if the directory/name pair
758 * we are looking for is known already.
759 */
760 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
761 return (error);
762 #endif
763
764 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
765 dprintf(("ntfs_lookup: faking . directory in %d\n",
766 dip->i_number));
767
768 VREF(dvp);
769 *ap->a_vpp = dvp;
770 error = 0;
771 } else if (cnp->cn_flags & ISDOTDOT) {
772 struct ntvattr *vap;
773
774 dprintf(("ntfs_lookup: faking .. directory in %d\n",
775 dip->i_number));
776
777 VOP_UNLOCK(dvp, 0);
778 cnp->cn_flags |= PDIRUNLOCK;
779
780 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
781 if(error)
782 return (error);
783
784 dprintf(("ntfs_lookup: parentdir: %d\n",
785 vap->va_a_name->n_pnumber));
786 error = VFS_VGET(ntmp->ntm_mountp,
787 vap->va_a_name->n_pnumber,ap->a_vpp);
788 ntfs_ntvattrrele(vap);
789 if (error) {
790 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0)
791 cnp->cn_flags &= ~PDIRUNLOCK;
792 return (error);
793 }
794
795 if (lockparent && (cnp->cn_flags & ISLASTCN)) {
796 error = vn_lock(dvp, LK_EXCLUSIVE);
797 if (error) {
798 vput( *(ap->a_vpp) );
799 return (error);
800 }
801 cnp->cn_flags &= ~PDIRUNLOCK;
802 }
803 } else {
804 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
805 if (error) {
806 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
807 return (error);
808 }
809
810 dprintf(("ntfs_lookup: found ino: %d\n",
811 VTONT(*ap->a_vpp)->i_number));
812
813 if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) {
814 VOP_UNLOCK(dvp, 0);
815 cnp->cn_flags |= PDIRUNLOCK;
816 }
817 }
818
819 if (cnp->cn_flags & MAKEENTRY)
820 cache_enter(dvp, *ap->a_vpp, cnp);
821
822 return (error);
823 }
824
825 #if defined(__FreeBSD__)
826 /*
827 * Flush the blocks of a file to disk.
828 *
829 * This function is worthless for vnodes that represent directories. Maybe we
830 * could just do a sync if they try an fsync on a directory file.
831 */
832 static int
833 ntfs_fsync(ap)
834 struct vop_fsync_args /* {
835 struct vnode *a_vp;
836 struct ucred *a_cred;
837 int a_waitfor;
838 off_t offlo;
839 off_t offhi;
840 struct proc *a_p;
841 } */ *ap;
842 {
843 return (0);
844 }
845 #endif
846
847 /*
848 * Return POSIX pathconf information applicable to NTFS filesystem
849 */
850 static int
851 ntfs_pathconf(v)
852 void *v;
853 {
854 struct vop_pathconf_args /* {
855 struct vnode *a_vp;
856 int a_name;
857 register_t *a_retval;
858 } */ *ap = v;
859
860 switch (ap->a_name) {
861 case _PC_LINK_MAX:
862 *ap->a_retval = 1;
863 return (0);
864 case _PC_NAME_MAX:
865 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax;
866 return (0);
867 case _PC_PATH_MAX:
868 *ap->a_retval = PATH_MAX;
869 return (0);
870 case _PC_CHOWN_RESTRICTED:
871 *ap->a_retval = 1;
872 return (0);
873 case _PC_NO_TRUNC:
874 *ap->a_retval = 0;
875 return (0);
876 case _PC_SYNC_IO:
877 *ap->a_retval = 1;
878 return (0);
879 case _PC_FILESIZEBITS:
880 *ap->a_retval = 64;
881 return (0);
882 default:
883 return (EINVAL);
884 }
885 /* NOTREACHED */
886 }
887
888 /*
889 * Global vfs data structures
890 */
891 vop_t **ntfs_vnodeop_p;
892 #if defined(__FreeBSD__)
893 static
894 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
895 { &vop_default_desc, (vop_t *)ntfs_bypass },
896
897 { &vop_getattr_desc, (vop_t *)ntfs_getattr },
898 { &vop_inactive_desc, (vop_t *)ntfs_inactive },
899 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
900 { &vop_print_desc, (vop_t *)ntfs_print },
901 { &vop_pathconf_desc, ntfs_pathconf },
902
903 { &vop_islocked_desc, (vop_t *)vop_stdislocked },
904 { &vop_unlock_desc, (vop_t *)vop_stdunlock },
905 { &vop_lock_desc, (vop_t *)vop_stdlock },
906 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
907 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
908
909 { &vop_access_desc, (vop_t *)ntfs_access },
910 { &vop_close_desc, (vop_t *)ntfs_close },
911 { &vop_open_desc, (vop_t *)ntfs_open },
912 { &vop_readdir_desc, (vop_t *)ntfs_readdir },
913 { &vop_fsync_desc, (vop_t *)ntfs_fsync },
914
915 { &vop_bmap_desc, (vop_t *)ntfs_bmap },
916 { &vop_getpages_desc, (vop_t *) ntfs_getpages },
917 { &vop_putpages_desc, (vop_t *) ntfs_putpages },
918 { &vop_strategy_desc, (vop_t *)ntfs_strategy },
919 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
920 { &vop_read_desc, (vop_t *)ntfs_read },
921 { &vop_write_desc, (vop_t *)ntfs_write },
922
923 { NULL, NULL }
924 };
925
926 static
927 struct vnodeopv_desc ntfs_vnodeop_opv_desc =
928 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
929
930 VNODEOP_SET(ntfs_vnodeop_opv_desc);
931
932 #else /* !FreeBSD */
933
934 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
935 { &vop_default_desc, (vop_t *) ntfs_bypass },
936 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
937 { &vop_create_desc, genfs_eopnotsupp }, /* create */
938 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
939 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */
940 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */
941 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */
942 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
943 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
944 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */
945 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */
946 { &vop_lease_desc, genfs_lease_check }, /* lease */
947 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
948 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
949 { &vop_poll_desc, genfs_poll }, /* poll */
950 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
951 { &vop_revoke_desc, genfs_revoke }, /* revoke */
952 { &vop_mmap_desc, genfs_mmap }, /* mmap */
953 { &vop_fsync_desc, genfs_fsync }, /* fsync */
954 { &vop_seek_desc, genfs_seek }, /* seek */
955 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */
956 { &vop_link_desc, genfs_eopnotsupp }, /* link */
957 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */
958 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
959 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
960 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
961 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
962 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
963 { &vop_abortop_desc, genfs_abortop }, /* abortop */
964 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
965 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
966 { &vop_lock_desc, genfs_lock }, /* lock */
967 { &vop_unlock_desc, genfs_unlock }, /* unlock */
968 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
969 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
970 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */
971 { &vop_islocked_desc, genfs_islocked }, /* islocked */
972 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
973 { &vop_advlock_desc, genfs_nullop }, /* advlock */
974 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */
975 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */
976 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */
977 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */
978 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */
979 { &vop_update_desc, genfs_nullop }, /* update */
980 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
981 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */
982 { &vop_putpages_desc, genfs_putpages }, /* putpages */
983 { NULL, NULL }
984 };
985 const struct vnodeopv_desc ntfs_vnodeop_opv_desc =
986 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
987
988 #endif
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