1 /* $NetBSD: ntfs_vnops.c,v 1.30.2.1 2007/02/17 23:27:44 tron 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 1.30.2.1 2007/02/17 23:27:44 tron 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 #include <sys/kauth.h>
53
54 #if !defined(__NetBSD__)
55 #include <vm/vm.h>
56 #endif
57
58 #if defined(__FreeBSD__)
59 #include <vm/vnode_pager.h>
60 #endif
61
62 #include <sys/sysctl.h>
63
64
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(void *);
74 static int ntfs_read(void *);
75 static int ntfs_write(void *);
76 static int ntfs_getattr(void *);
77 static int ntfs_inactive(void *);
78 static int ntfs_print(void *);
79 static int ntfs_reclaim(void *);
80 static int ntfs_strategy(void *);
81 static int ntfs_access(void *);
82 static int ntfs_open(void *);
83 static int ntfs_close(void *);
84 static int ntfs_readdir(void *);
85 static int ntfs_lookup(void *);
86 static int ntfs_bmap(void *);
87 #if defined(__FreeBSD__)
88 static int ntfs_getpages(struct vop_getpages_args *);
89 static int ntfs_putpages(struct vop_putpages_args *);
90 #endif
91 static int ntfs_fsync(void *);
92 static int ntfs_pathconf(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(void *v)
119 {
120 struct vop_bmap_args /* {
121 struct vnode *a_vp;
122 daddr_t a_bn;
123 struct vnode **a_vpp;
124 daddr_t *a_bnp;
125 int *a_runp;
126 int *a_runb;
127 } */ *ap = v;
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(void *v)
144 {
145 struct vop_read_args /* {
146 struct vnode *a_vp;
147 struct uio *a_uio;
148 int a_ioflag;
149 kauth_cred_t a_cred;
150 } */ *ap = v;
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: %llu, off: %qd resid: %qd\n",
160 (unsigned long long)ip->i_number, (long long)uio->uio_offset,
161 (long long)uio->uio_resid));
162
163 dprintf(("ntfs_read: filesize: %qu",(long long)fp->f_size));
164
165 /* don't allow reading after end of file */
166 if (uio->uio_offset > fp->f_size)
167 toread = 0;
168 else
169 toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset );
170
171 dprintf((", toread: %qu\n",(long long)toread));
172
173 if (toread == 0)
174 return (0);
175
176 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
177 fp->f_attrname, uio->uio_offset, toread, NULL, uio);
178 if (error) {
179 printf("ntfs_read: ntfs_readattr failed: %d\n",error);
180 return (error);
181 }
182
183 return (0);
184 }
185
186 static int
187 ntfs_bypass(void *v)
188 {
189 struct vop_generic_args /* {
190 struct vnodeop_desc *a_desc;
191 <other random data follows, presumably>
192 } */ *ap __unused = v;
193 int error = ENOTTY;
194 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
195 return (error);
196 }
197
198
199 static int
200 ntfs_getattr(void *v)
201 {
202 struct vop_getattr_args /* {
203 struct vnode *a_vp;
204 struct vattr *a_vap;
205 kauth_cred_t a_cred;
206 struct lwp *a_l;
207 } */ *ap = v;
208 struct vnode *vp = ap->a_vp;
209 struct fnode *fp = VTOF(vp);
210 struct ntnode *ip = FTONT(fp);
211 struct vattr *vap = ap->a_vap;
212
213 dprintf(("ntfs_getattr: %llu, flags: %d\n",
214 (unsigned long long)ip->i_number, ip->i_flag));
215
216 #if defined(__FreeBSD__)
217 vap->va_fsid = dev2udev(ip->i_dev);
218 #else /* NetBSD */
219 vap->va_fsid = ip->i_dev;
220 #endif
221 vap->va_fileid = ip->i_number;
222 vap->va_mode = ip->i_mp->ntm_mode;
223 vap->va_nlink = ip->i_nlink;
224 vap->va_uid = ip->i_mp->ntm_uid;
225 vap->va_gid = ip->i_mp->ntm_gid;
226 vap->va_rdev = 0; /* XXX UNODEV ? */
227 vap->va_size = fp->f_size;
228 vap->va_bytes = fp->f_allocated;
229 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
230 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
231 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
232 vap->va_flags = ip->i_flag;
233 vap->va_gen = 0;
234 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
235 vap->va_type = vp->v_type;
236 vap->va_filerev = 0;
237 return (0);
238 }
239
240
241 /*
242 * Last reference to an ntnode. If necessary, write or delete it.
243 */
244 int
245 ntfs_inactive(void *v)
246 {
247 struct vop_inactive_args /* {
248 struct vnode *a_vp;
249 } */ *ap = v;
250 struct vnode *vp = ap->a_vp;
251 #ifdef NTFS_DEBUG
252 struct ntnode *ip = VTONT(vp);
253 #endif
254
255 dprintf(("ntfs_inactive: vnode: %p, ntnode: %llu\n", vp,
256 (unsigned long long)ip->i_number));
257
258 if (prtactive && vp->v_usecount != 0)
259 vprint("ntfs_inactive: pushing active", vp);
260
261 VOP_UNLOCK(vp, 0);
262
263 /* XXX since we don't support any filesystem changes
264 * right now, nothing more needs to be done
265 */
266 return (0);
267 }
268
269 /*
270 * Reclaim an fnode/ntnode so that it can be used for other purposes.
271 */
272 int
273 ntfs_reclaim(void *v)
274 {
275 struct vop_reclaim_args /* {
276 struct vnode *a_vp;
277 } */ *ap = v;
278 struct vnode *vp = ap->a_vp;
279 struct fnode *fp = VTOF(vp);
280 struct ntnode *ip = FTONT(fp);
281 int error;
282
283 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %llu\n", vp,
284 (unsigned long long)ip->i_number));
285
286 if (prtactive && vp->v_usecount != 0)
287 vprint("ntfs_reclaim: pushing active", vp);
288
289 if ((error = ntfs_ntget(ip)) != 0)
290 return (error);
291
292 /* Purge old data structures associated with the inode. */
293 cache_purge(vp);
294 if (ip->i_devvp) {
295 vrele(ip->i_devvp);
296 ip->i_devvp = NULL;
297 }
298
299 ntfs_frele(fp);
300 ntfs_ntput(ip);
301 vp->v_data = NULL;
302
303 return (0);
304 }
305
306 static int
307 ntfs_print(void *v)
308 {
309 struct vop_print_args /* {
310 struct vnode *a_vp;
311 } */ *ap = v;
312 struct ntnode *ip = VTONT(ap->a_vp);
313
314 printf("tag VT_NTFS, ino %llu, flag %#x, usecount %d, nlink %ld\n",
315 (unsigned long long)ip->i_number, ip->i_flag, ip->i_usecount,
316 ip->i_nlink);
317 printf(" ");
318 lockmgr_printinfo(ap->a_vp->v_vnlock);
319 printf("\n");
320 return (0);
321 }
322
323 /*
324 * Calculate the logical to physical mapping if not done already,
325 * then call the device strategy routine.
326 */
327 int
328 ntfs_strategy(void *v)
329 {
330 struct vop_strategy_args /* {
331 struct vnode *a_vp;
332 struct buf *a_bp;
333 } */ *ap = v;
334 struct buf *bp = ap->a_bp;
335 struct vnode *vp = ap->a_vp;
336 struct fnode *fp = VTOF(vp);
337 struct ntnode *ip = FTONT(fp);
338 struct ntfsmount *ntmp = ip->i_mp;
339 int error;
340
341 #ifdef __FreeBSD__
342 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
343 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
344 (u_int32_t)bp->b_lblkno));
345 #else
346 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
347 (u_int32_t)bp->b_blkno,
348 (u_int32_t)bp->b_lblkno));
349 #endif
350
351 dprintf(("strategy: bcount: %u flags: 0x%x\n",
352 (u_int32_t)bp->b_bcount,bp->b_flags));
353
354 if (bp->b_flags & B_READ) {
355 u_int32_t toread;
356
357 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
358 clrbuf(bp);
359 error = 0;
360 } else {
361 toread = MIN(bp->b_bcount,
362 fp->f_size - ntfs_cntob(bp->b_blkno));
363 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
364 toread,(u_int32_t)fp->f_size));
365
366 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
367 fp->f_attrname, ntfs_cntob(bp->b_blkno),
368 toread, bp->b_data, NULL);
369
370 if (error) {
371 printf("ntfs_strategy: ntfs_readattr failed\n");
372 bp->b_error = error;
373 bp->b_flags |= B_ERROR;
374 }
375
376 bzero(bp->b_data + toread, bp->b_bcount - toread);
377 }
378 } else {
379 size_t tmp;
380 u_int32_t towrite;
381
382 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
383 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
384 bp->b_error = error = EFBIG;
385 bp->b_flags |= B_ERROR;
386 } else {
387 towrite = MIN(bp->b_bcount,
388 fp->f_size - ntfs_cntob(bp->b_blkno));
389 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
390 towrite,(u_int32_t)fp->f_size));
391
392 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
393 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
394 bp->b_data, &tmp, NULL);
395
396 if (error) {
397 printf("ntfs_strategy: ntfs_writeattr fail\n");
398 bp->b_error = error;
399 bp->b_flags |= B_ERROR;
400 }
401 }
402 }
403 biodone(bp);
404 return (error);
405 }
406
407 static int
408 ntfs_write(void *v)
409 {
410 struct vop_write_args /* {
411 struct vnode *a_vp;
412 struct uio *a_uio;
413 int a_ioflag;
414 kauth_cred_t a_cred;
415 } */ *ap = v;
416 struct vnode *vp = ap->a_vp;
417 struct fnode *fp = VTOF(vp);
418 struct ntnode *ip = FTONT(fp);
419 struct uio *uio = ap->a_uio;
420 struct ntfsmount *ntmp = ip->i_mp;
421 u_int64_t towrite;
422 size_t written;
423 int error;
424
425 dprintf(("ntfs_write: ino: %llu, off: %qd resid: %qd\n",
426 (unsigned long long)ip->i_number, (long long)uio->uio_offset,
427 (long long)uio->uio_resid));
428 dprintf(("ntfs_write: filesize: %qu",(long long)fp->f_size));
429
430 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
431 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
432 return (EFBIG);
433 }
434
435 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset);
436
437 dprintf((", towrite: %qu\n",(long long)towrite));
438
439 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
440 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
441 #ifdef NTFS_DEBUG
442 if (error)
443 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
444 #endif
445
446 return (error);
447 }
448
449 int
450 ntfs_access(void *v)
451 {
452 struct vop_access_args /* {
453 struct vnode *a_vp;
454 int a_mode;
455 kauth_cred_t a_cred;
456 struct lwp *a_l;
457 } */ *ap = v;
458 struct vnode *vp = ap->a_vp;
459 struct ntnode *ip = VTONT(vp);
460 kauth_cred_t cred = ap->a_cred;
461 mode_t mask, mode = ap->a_mode;
462 gid_t grp;
463 int i;
464 uint16_t ngroups;
465
466 dprintf(("ntfs_access: %llu\n", (unsigned long long)ip->i_number));
467
468 /*
469 * Disallow write attempts on read-only file systems;
470 * unless the file is a socket, fifo, or a block or
471 * character device resident on the file system.
472 */
473 if (mode & VWRITE) {
474 switch ((int)vp->v_type) {
475 case VDIR:
476 case VLNK:
477 case VREG:
478 if (vp->v_mount->mnt_flag & MNT_RDONLY)
479 return (EROFS);
480 break;
481 }
482 }
483
484 /* Otherwise, user id 0 always gets access. */
485 if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, NULL) == 0)
486 return (0);
487
488 mask = 0;
489
490 /* Otherwise, check the owner. */
491 if (kauth_cred_geteuid(cred) == ip->i_mp->ntm_uid) {
492 if (mode & VEXEC)
493 mask |= S_IXUSR;
494 if (mode & VREAD)
495 mask |= S_IRUSR;
496 if (mode & VWRITE)
497 mask |= S_IWUSR;
498 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
499 }
500
501 /* Otherwise, check the groups. */
502 ngroups = kauth_cred_ngroups(cred);
503 for (i = 0; i < ngroups; i++) {
504 grp = kauth_cred_group(cred, i);
505 if (ip->i_mp->ntm_gid == grp) {
506 if (mode & VEXEC)
507 mask |= S_IXGRP;
508 if (mode & VREAD)
509 mask |= S_IRGRP;
510 if (mode & VWRITE)
511 mask |= S_IWGRP;
512 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
513 }
514 }
515
516 /* Otherwise, check everyone else. */
517 if (mode & VEXEC)
518 mask |= S_IXOTH;
519 if (mode & VREAD)
520 mask |= S_IROTH;
521 if (mode & VWRITE)
522 mask |= S_IWOTH;
523 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
524 }
525
526 /*
527 * Open called.
528 *
529 * Nothing to do.
530 */
531 /* ARGSUSED */
532 static int
533 ntfs_open(void *v)
534 {
535 struct vop_open_args /* {
536 struct vnode *a_vp;
537 int a_mode;
538 kauth_cred_t a_cred;
539 struct lwp *a_l;
540 } */ *ap __unused = v;
541 #ifdef NTFS_DEBUG
542 struct vnode *vp = ap->a_vp;
543 struct ntnode *ip = VTONT(vp);
544
545 printf("ntfs_open: %llu\n", (unsigned long long)ip->i_number);
546 #endif
547
548 /*
549 * Files marked append-only must be opened for appending.
550 */
551
552 return (0);
553 }
554
555 /*
556 * Close called.
557 *
558 * Update the times on the inode.
559 */
560 /* ARGSUSED */
561 static int
562 ntfs_close(void *v)
563 {
564 struct vop_close_args /* {
565 struct vnode *a_vp;
566 int a_fflag;
567 kauth_cred_t a_cred;
568 struct lwp *a_l;
569 } */ *ap __unused = v;
570 #ifdef NTFS_DEBUG
571 struct vnode *vp = ap->a_vp;
572 struct ntnode *ip = VTONT(vp);
573
574 printf("ntfs_close: %llu\n", (unsigned long long)ip->i_number);
575 #endif
576
577 return (0);
578 }
579
580 int
581 ntfs_readdir(void *v)
582 {
583 struct vop_readdir_args /* {
584 struct vnode *a_vp;
585 struct uio *a_uio;
586 kauth_cred_t a_cred;
587 int *a_ncookies;
588 u_int **cookies;
589 } */ *ap = v;
590 struct vnode *vp = ap->a_vp;
591 struct fnode *fp = VTOF(vp);
592 struct ntnode *ip = FTONT(fp);
593 struct uio *uio = ap->a_uio;
594 struct ntfsmount *ntmp = ip->i_mp;
595 int i, error = 0;
596 u_int32_t faked = 0, num;
597 int ncookies = 0;
598 struct dirent *cde;
599 off_t off;
600
601 dprintf(("ntfs_readdir %llu off: %qd resid: %qd\n",
602 (unsigned long long)ip->i_number, (long long)uio->uio_offset,
603 (long long)uio->uio_resid));
604
605 off = uio->uio_offset;
606
607 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK);
608
609 /* Simulate . in every dir except ROOT */
610 if (ip->i_number != NTFS_ROOTINO
611 && uio->uio_offset < sizeof(struct dirent)) {
612 cde->d_fileno = ip->i_number;
613 cde->d_reclen = sizeof(struct dirent);
614 cde->d_type = DT_DIR;
615 cde->d_namlen = 1;
616 strncpy(cde->d_name, ".", 2);
617 error = uiomove((void *)cde, sizeof(struct dirent), uio);
618 if (error)
619 goto out;
620
621 ncookies++;
622 }
623
624 /* Simulate .. in every dir including ROOT */
625 if (uio->uio_offset < 2 * sizeof(struct dirent)) {
626 cde->d_fileno = NTFS_ROOTINO; /* XXX */
627 cde->d_reclen = sizeof(struct dirent);
628 cde->d_type = DT_DIR;
629 cde->d_namlen = 2;
630 strncpy(cde->d_name, "..", 3);
631
632 error = uiomove((void *) cde, sizeof(struct dirent), uio);
633 if (error)
634 goto out;
635
636 ncookies++;
637 }
638
639 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
640 num = uio->uio_offset / sizeof(struct dirent) - faked;
641
642 while (uio->uio_resid >= sizeof(struct dirent)) {
643 struct attr_indexentry *iep;
644 char *fname;
645 size_t remains;
646 int sz;
647
648 error = ntfs_ntreaddir(ntmp, fp, num, &iep);
649 if (error)
650 goto out;
651
652 if (NULL == iep)
653 break;
654
655 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
656 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
657 {
658 if(!ntfs_isnamepermitted(ntmp,iep))
659 continue;
660
661 remains = sizeof(cde->d_name) - 1;
662 fname = cde->d_name;
663 for(i=0; i<iep->ie_fnamelen; i++) {
664 sz = (*ntmp->ntm_wput)(fname, remains,
665 iep->ie_fname[i]);
666 fname += sz;
667 remains -= sz;
668 }
669 *fname = '\0';
670 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
671 num, cde->d_name, iep->ie_fnametype,
672 iep->ie_flag));
673 cde->d_namlen = fname - (char *) cde->d_name;
674 cde->d_fileno = iep->ie_number;
675 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
676 cde->d_reclen = sizeof(struct dirent);
677 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg"));
678
679 error = uiomove((void *)cde, sizeof(struct dirent), uio);
680 if (error)
681 goto out;
682
683 ncookies++;
684 num++;
685 }
686 }
687
688 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
689 ncookies,(u_int)(uio->uio_offset - off)));
690 dprintf(("ntfs_readdir: off: %qd resid: %qu\n",
691 (long long)uio->uio_offset,(long long)uio->uio_resid));
692
693 if (!error && ap->a_ncookies != NULL) {
694 struct dirent* dpStart;
695 struct dirent* dp;
696 #if defined(__FreeBSD__)
697 u_long *cookies;
698 u_long *cookiep;
699 #else /* defined(__NetBSD__) */
700 off_t *cookies;
701 off_t *cookiep;
702 #endif
703
704 dprintf(("ntfs_readdir: %d cookies\n",ncookies));
705 if (!VMSPACE_IS_KERNEL_P(uio->uio_vmspace) ||
706 uio->uio_iovcnt != 1)
707 panic("ntfs_readdir: unexpected uio from NFS server");
708 dpStart = (struct dirent *)
709 ((caddr_t)uio->uio_iov->iov_base -
710 (uio->uio_offset - off));
711 #if defined(__FreeBSD__)
712 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
713 M_TEMP, M_WAITOK);
714 #else /* defined(__NetBSD__) */
715 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
716 #endif
717 for (dp = dpStart, cookiep = cookies, i=0;
718 i < ncookies;
719 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
720 off += dp->d_reclen;
721 *cookiep++ = (u_int) off;
722 }
723 *ap->a_ncookies = ncookies;
724 *ap->a_cookies = cookies;
725 }
726 /*
727 if (ap->a_eofflag)
728 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
729 */
730 out:
731 FREE(cde, M_TEMP);
732 return (error);
733 }
734
735 int
736 ntfs_lookup(void *v)
737 {
738 struct vop_lookup_args /* {
739 struct vnode *a_dvp;
740 struct vnode **a_vpp;
741 struct componentname *a_cnp;
742 } */ *ap = v;
743 struct vnode *dvp = ap->a_dvp;
744 struct ntnode *dip = VTONT(dvp);
745 struct ntfsmount *ntmp = dip->i_mp;
746 struct componentname *cnp = ap->a_cnp;
747 kauth_cred_t cred = cnp->cn_cred;
748 int error;
749
750 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %llu\n",
751 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
752 (unsigned long long)dip->i_number));
753
754 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_lwp);
755 if(error)
756 return (error);
757
758 if ((cnp->cn_flags & ISLASTCN) &&
759 (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
760 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
761 return (EROFS);
762
763 #ifdef __NetBSD__
764 /*
765 * We now have a segment name to search for, and a directory
766 * to search.
767 *
768 * Before tediously performing a linear scan of the directory,
769 * check the name cache to see if the directory/name pair
770 * we are looking for is known already.
771 */
772 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
773 return (error);
774 #endif
775
776 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
777 dprintf(("ntfs_lookup: faking . directory in %llu\n",
778 (unsigned long long)dip->i_number));
779
780 VREF(dvp);
781 *ap->a_vpp = dvp;
782 error = 0;
783 } else if (cnp->cn_flags & ISDOTDOT) {
784 struct ntvattr *vap;
785
786 dprintf(("ntfs_lookup: faking .. directory in %llu\n",
787 (unsigned long long)dip->i_number));
788
789 VOP_UNLOCK(dvp, 0);
790 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
791 if (error) {
792 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
793 return (error);
794 }
795
796 dprintf(("ntfs_lookup: parentdir: %d\n",
797 vap->va_a_name->n_pnumber));
798 error = VFS_VGET(ntmp->ntm_mountp,
799 vap->va_a_name->n_pnumber,ap->a_vpp);
800 ntfs_ntvattrrele(vap);
801 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
802 if (error) {
803 return (error);
804 }
805 } else {
806 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
807 if (error) {
808 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
809 return (error);
810 }
811
812 dprintf(("ntfs_lookup: found ino: %llu\n",
813 (unsigned long long)VTONT(*ap->a_vpp)->i_number));
814 }
815
816 if (cnp->cn_flags & MAKEENTRY)
817 cache_enter(dvp, *ap->a_vpp, cnp);
818
819 return (error);
820 }
821
822 /*
823 * Flush the blocks of a file to disk.
824 *
825 * This function is worthless for vnodes that represent directories. Maybe we
826 * could just do a sync if they try an fsync on a directory file.
827 */
828 static int
829 ntfs_fsync(void *v)
830 {
831 struct vop_fsync_args /* {
832 struct vnode *a_vp;
833 kauth_cred_t a_cred;
834 int a_flags;
835 off_t offlo;
836 off_t offhi;
837 struct lwp *a_l;
838 } */ *ap = v;
839 struct vnode *vp = ap->a_vp;
840 int wait;
841
842 if (ap->a_flags & FSYNC_CACHE) {
843 return EOPNOTSUPP;
844 }
845
846 wait = (ap->a_flags & FSYNC_WAIT) != 0;
847 vflushbuf(vp, wait);
848
849 return 0;
850 }
851
852 /*
853 * Return POSIX pathconf information applicable to NTFS filesystem
854 */
855 static int
856 ntfs_pathconf(void *v)
857 {
858 struct vop_pathconf_args /* {
859 struct vnode *a_vp;
860 int a_name;
861 register_t *a_retval;
862 } */ *ap = v;
863
864 switch (ap->a_name) {
865 case _PC_LINK_MAX:
866 *ap->a_retval = 1;
867 return (0);
868 case _PC_NAME_MAX:
869 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax;
870 return (0);
871 case _PC_PATH_MAX:
872 *ap->a_retval = PATH_MAX;
873 return (0);
874 case _PC_CHOWN_RESTRICTED:
875 *ap->a_retval = 1;
876 return (0);
877 case _PC_NO_TRUNC:
878 *ap->a_retval = 0;
879 return (0);
880 case _PC_SYNC_IO:
881 *ap->a_retval = 1;
882 return (0);
883 case _PC_FILESIZEBITS:
884 *ap->a_retval = 64;
885 return (0);
886 default:
887 return (EINVAL);
888 }
889 /* NOTREACHED */
890 }
891
892 /*
893 * Global vfs data structures
894 */
895 vop_t **ntfs_vnodeop_p;
896 #if defined(__FreeBSD__)
897 static
898 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
899 { &vop_default_desc, (vop_t *)ntfs_bypass },
900
901 { &vop_getattr_desc, (vop_t *)ntfs_getattr },
902 { &vop_inactive_desc, (vop_t *)ntfs_inactive },
903 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
904 { &vop_print_desc, (vop_t *)ntfs_print },
905 { &vop_pathconf_desc, ntfs_pathconf },
906
907 { &vop_islocked_desc, (vop_t *)vop_stdislocked },
908 { &vop_unlock_desc, (vop_t *)vop_stdunlock },
909 { &vop_lock_desc, (vop_t *)vop_stdlock },
910 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
911 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
912
913 { &vop_access_desc, (vop_t *)ntfs_access },
914 { &vop_close_desc, (vop_t *)ntfs_close },
915 { &vop_open_desc, (vop_t *)ntfs_open },
916 { &vop_readdir_desc, (vop_t *)ntfs_readdir },
917 { &vop_fsync_desc, (vop_t *)ntfs_fsync },
918
919 { &vop_bmap_desc, (vop_t *)ntfs_bmap },
920 { &vop_getpages_desc, (vop_t *) ntfs_getpages },
921 { &vop_putpages_desc, (vop_t *) ntfs_putpages },
922 { &vop_strategy_desc, (vop_t *)ntfs_strategy },
923 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
924 { &vop_read_desc, (vop_t *)ntfs_read },
925 { &vop_write_desc, (vop_t *)ntfs_write },
926
927 { NULL, NULL }
928 };
929
930 static
931 struct vnodeopv_desc ntfs_vnodeop_opv_desc =
932 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
933
934 VNODEOP_SET(ntfs_vnodeop_opv_desc);
935
936 #else /* !FreeBSD */
937
938 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
939 { &vop_default_desc, (vop_t *) ntfs_bypass },
940 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
941 { &vop_create_desc, genfs_eopnotsupp }, /* create */
942 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
943 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */
944 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */
945 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */
946 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
947 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
948 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */
949 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */
950 { &vop_lease_desc, genfs_lease_check }, /* lease */
951 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
952 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
953 { &vop_poll_desc, genfs_poll }, /* poll */
954 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
955 { &vop_revoke_desc, genfs_revoke }, /* revoke */
956 { &vop_mmap_desc, genfs_mmap }, /* mmap */
957 { &vop_fsync_desc, (vop_t *) ntfs_fsync }, /* fsync */
958 { &vop_seek_desc, genfs_seek }, /* seek */
959 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */
960 { &vop_link_desc, genfs_eopnotsupp }, /* link */
961 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */
962 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
963 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
964 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
965 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
966 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
967 { &vop_abortop_desc, genfs_abortop }, /* abortop */
968 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
969 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
970 { &vop_lock_desc, genfs_lock }, /* lock */
971 { &vop_unlock_desc, genfs_unlock }, /* unlock */
972 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
973 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
974 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */
975 { &vop_islocked_desc, genfs_islocked }, /* islocked */
976 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
977 { &vop_advlock_desc, genfs_nullop }, /* advlock */
978 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
979 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */
980 { &vop_putpages_desc, genfs_putpages }, /* putpages */
981 { NULL, NULL }
982 };
983 const struct vnodeopv_desc ntfs_vnodeop_opv_desc =
984 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
985
986 #endif
Cache object: a17ce35dc32a75d23a30b9cd7c7ab9ef
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