proc->thread stage 3.5: Add an IO_CORE flag so coda doesn't have to dig
[dragonfly.git] / sys / vfs / ntfs / ntfs_vnops.c
CommitLineData
984263bc
MD
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 $
1de703da 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.2 2003/06/17 04:28:54 dillon Exp $
984263bc
MD
40 *
41 */
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/kernel.h>
46#include <sys/time.h>
47#include <sys/types.h>
48#include <sys/stat.h>
49#include <sys/vnode.h>
50#include <sys/mount.h>
51#include <sys/namei.h>
52#include <sys/malloc.h>
53#include <sys/buf.h>
54#include <sys/dirent.h>
55
56#include <vm/vm.h>
57#include <vm/vm_param.h>
58#if defined(__NetBSD__)
59#include <vm/vm_prot.h>
60#endif
61#include <vm/vm_page.h>
62#include <vm/vm_object.h>
63#include <vm/vm_pager.h>
64#if defined(__FreeBSD__)
65#include <vm/vnode_pager.h>
66#endif
67#include <vm/vm_extern.h>
68
69#include <sys/sysctl.h>
70
71/*#define NTFS_DEBUG 1*/
72#include <ntfs/ntfs.h>
73#include <ntfs/ntfs_inode.h>
74#include <ntfs/ntfs_subr.h>
75#if defined(__NetBSD__)
76#include <miscfs/specfs/specdev.h>
77#include <miscfs/genfs/genfs.h>
78#endif
79
80#include <sys/unistd.h> /* for pathconf(2) constants */
81
82static int ntfs_read __P((struct vop_read_args *));
83static int ntfs_write __P((struct vop_write_args *ap));
84static int ntfs_getattr __P((struct vop_getattr_args *ap));
85static int ntfs_inactive __P((struct vop_inactive_args *ap));
86static int ntfs_print __P((struct vop_print_args *ap));
87static int ntfs_reclaim __P((struct vop_reclaim_args *ap));
88static int ntfs_strategy __P((struct vop_strategy_args *ap));
89static int ntfs_access __P((struct vop_access_args *ap));
90static int ntfs_open __P((struct vop_open_args *ap));
91static int ntfs_close __P((struct vop_close_args *ap));
92static int ntfs_readdir __P((struct vop_readdir_args *ap));
93static int ntfs_lookup __P((struct vop_lookup_args *ap));
94static int ntfs_bmap __P((struct vop_bmap_args *ap));
95#if defined(__FreeBSD__)
96static int ntfs_getpages __P((struct vop_getpages_args *ap));
97static int ntfs_putpages __P((struct vop_putpages_args *));
98static int ntfs_fsync __P((struct vop_fsync_args *ap));
99#else
100static int ntfs_bypass __P((struct vop_generic_args *ap));
101#endif
102static int ntfs_pathconf __P((void *));
103
104int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
105
106#if defined(__FreeBSD__)
107int
108ntfs_getpages(ap)
109 struct vop_getpages_args *ap;
110{
111 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
112 ap->a_reqpage);
113}
114
115int
116ntfs_putpages(ap)
117 struct vop_putpages_args *ap;
118{
119 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
120 ap->a_sync, ap->a_rtvals);
121}
122#endif
123
124/*
125 * This is a noop, simply returning what one has been given.
126 */
127int
128ntfs_bmap(ap)
129 struct vop_bmap_args /* {
130 struct vnode *a_vp;
131 daddr_t a_bn;
132 struct vnode **a_vpp;
133 daddr_t *a_bnp;
134 int *a_runp;
135 int *a_runb;
136 } */ *ap;
137{
138 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
139 if (ap->a_vpp != NULL)
140 *ap->a_vpp = ap->a_vp;
141 if (ap->a_bnp != NULL)
142 *ap->a_bnp = ap->a_bn;
143 if (ap->a_runp != NULL)
144 *ap->a_runp = 0;
145#if !defined(__NetBSD__)
146 if (ap->a_runb != NULL)
147 *ap->a_runb = 0;
148#endif
149 return (0);
150}
151
152static int
153ntfs_read(ap)
154 struct vop_read_args /* {
155 struct vnode *a_vp;
156 struct uio *a_uio;
157 int a_ioflag;
158 struct ucred *a_cred;
159 } */ *ap;
160{
161 register struct vnode *vp = ap->a_vp;
162 register struct fnode *fp = VTOF(vp);
163 register struct ntnode *ip = FTONT(fp);
164 struct uio *uio = ap->a_uio;
165 struct ntfsmount *ntmp = ip->i_mp;
166 struct buf *bp;
167 daddr_t cn;
168 int resid, off, toread;
169 int error;
170
171 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));
172
173 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
174
175 /* don't allow reading after end of file */
176 if (uio->uio_offset > fp->f_size)
177 return (0);
178
179 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset);
180
181 dprintf((", resid: %d\n", resid));
182
183 error = 0;
184 while (resid) {
185 cn = ntfs_btocn(uio->uio_offset);
186 off = ntfs_btocnoff(uio->uio_offset);
187
188 toread = min(off + resid, ntfs_cntob(1));
189
190 error = bread(vp, cn, ntfs_cntob(1), NOCRED, &bp);
191 if (error) {
192 brelse(bp);
193 break;
194 }
195
196 error = uiomove(bp->b_data + off, toread - off, uio);
197 if(error) {
198 brelse(bp);
199 break;
200 }
201 brelse(bp);
202
203 resid -= toread - off;
204 }
205
206 return (error);
207}
208
209#if !defined(__FreeBSD__)
210
211static int
212ntfs_bypass(ap)
213 struct vop_generic_args /* {
214 struct vnodeop_desc *a_desc;
215 <other random data follows, presumably>
216 } */ *ap;
217{
218 int error = ENOTTY;
219 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
220 return (error);
221}
222
223#endif
224
225static int
226ntfs_getattr(ap)
227 struct vop_getattr_args /* {
228 struct vnode *a_vp;
229 struct vattr *a_vap;
230 struct ucred *a_cred;
231 struct proc *a_p;
232 } */ *ap;
233{
234 register struct vnode *vp = ap->a_vp;
235 register struct fnode *fp = VTOF(vp);
236 register struct ntnode *ip = FTONT(fp);
237 register struct vattr *vap = ap->a_vap;
238
239 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
240
241#if defined(__FreeBSD__)
242 vap->va_fsid = dev2udev(ip->i_dev);
243#else /* NetBSD */
244 vap->va_fsid = ip->i_dev;
245#endif
246 vap->va_fileid = ip->i_number;
247 vap->va_mode = ip->i_mp->ntm_mode;
248 vap->va_nlink = ip->i_nlink;
249 vap->va_uid = ip->i_mp->ntm_uid;
250 vap->va_gid = ip->i_mp->ntm_gid;
251 vap->va_rdev = 0; /* XXX UNODEV ? */
252 vap->va_size = fp->f_size;
253 vap->va_bytes = fp->f_allocated;
254 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
255 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
256 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
257 vap->va_flags = ip->i_flag;
258 vap->va_gen = 0;
259 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
260 vap->va_type = vp->v_type;
261 vap->va_filerev = 0;
262 return (0);
263}
264
265
266/*
267 * Last reference to an ntnode. If necessary, write or delete it.
268 */
269int
270ntfs_inactive(ap)
271 struct vop_inactive_args /* {
272 struct vnode *a_vp;
273 } */ *ap;
274{
275 register struct vnode *vp = ap->a_vp;
276#ifdef NTFS_DEBUG
277 register struct ntnode *ip = VTONT(vp);
278#endif
279
280 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
281
282 if (ntfs_prtactive && vp->v_usecount != 0)
283 vprint("ntfs_inactive: pushing active", vp);
284
285 VOP__UNLOCK(vp, 0, ap->a_p);
286
287 /* XXX since we don't support any filesystem changes
288 * right now, nothing more needs to be done
289 */
290 return (0);
291}
292
293/*
294 * Reclaim an fnode/ntnode so that it can be used for other purposes.
295 */
296int
297ntfs_reclaim(ap)
298 struct vop_reclaim_args /* {
299 struct vnode *a_vp;
300 } */ *ap;
301{
302 register struct vnode *vp = ap->a_vp;
303 register struct fnode *fp = VTOF(vp);
304 register struct ntnode *ip = FTONT(fp);
305 int error;
306
307 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
308
309 if (ntfs_prtactive && vp->v_usecount != 0)
310 vprint("ntfs_reclaim: pushing active", vp);
311
312 if ((error = ntfs_ntget(ip)) != 0)
313 return (error);
314
315 /* Purge old data structures associated with the inode. */
316 cache_purge(vp);
317
318 ntfs_frele(fp);
319 ntfs_ntput(ip);
320 vp->v_data = NULL;
321
322 return (0);
323}
324
325static int
326ntfs_print(ap)
327 struct vop_print_args /* {
328 struct vnode *a_vp;
329 } */ *ap;
330{
331 return (0);
332}
333
334/*
335 * Calculate the logical to physical mapping if not done already,
336 * then call the device strategy routine.
337 */
338int
339ntfs_strategy(ap)
340 struct vop_strategy_args /* {
341 struct buf *a_bp;
342 } */ *ap;
343{
344 register struct buf *bp = ap->a_bp;
345 register struct vnode *vp = bp->b_vp;
346 register struct fnode *fp = VTOF(vp);
347 register struct ntnode *ip = FTONT(fp);
348 struct ntfsmount *ntmp = ip->i_mp;
349 int error;
350
351#ifdef __FreeBSD__
352 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
353 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
354 (u_int32_t)bp->b_lblkno));
355#else
356 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
357 (u_int32_t)bp->b_blkno,
358 (u_int32_t)bp->b_lblkno));
359#endif
360
361 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
362 (u_int32_t)bp->b_bcount,bp->b_flags));
363
364 if (bp->b_flags & B_READ) {
365 u_int32_t toread;
366
367 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
368 clrbuf(bp);
369 error = 0;
370 } else {
371 toread = min(bp->b_bcount,
372 fp->f_size-ntfs_cntob(bp->b_blkno));
373 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
374 toread,(u_int32_t)fp->f_size));
375
376 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
377 fp->f_attrname, ntfs_cntob(bp->b_blkno),
378 toread, bp->b_data, NULL);
379
380 if (error) {
381 printf("ntfs_strategy: ntfs_readattr failed\n");
382 bp->b_error = error;
383 bp->b_flags |= B_ERROR;
384 }
385
386 bzero(bp->b_data + toread, bp->b_bcount - toread);
387 }
388 } else {
389 size_t tmp;
390 u_int32_t towrite;
391
392 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
393 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
394 bp->b_error = error = EFBIG;
395 bp->b_flags |= B_ERROR;
396 } else {
397 towrite = min(bp->b_bcount,
398 fp->f_size-ntfs_cntob(bp->b_blkno));
399 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
400 towrite,(u_int32_t)fp->f_size));
401
402 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
403 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
404 bp->b_data, &tmp, NULL);
405
406 if (error) {
407 printf("ntfs_strategy: ntfs_writeattr fail\n");
408 bp->b_error = error;
409 bp->b_flags |= B_ERROR;
410 }
411 }
412 }
413 biodone(bp);
414 return (error);
415}
416
417static int
418ntfs_write(ap)
419 struct vop_write_args /* {
420 struct vnode *a_vp;
421 struct uio *a_uio;
422 int a_ioflag;
423 struct ucred *a_cred;
424 } */ *ap;
425{
426 register struct vnode *vp = ap->a_vp;
427 register struct fnode *fp = VTOF(vp);
428 register struct ntnode *ip = FTONT(fp);
429 struct uio *uio = ap->a_uio;
430 struct ntfsmount *ntmp = ip->i_mp;
431 u_int64_t towrite;
432 size_t written;
433 int error;
434
435 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));
436 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
437
438 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
439 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
440 return (EFBIG);
441 }
442
443 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
444
445 dprintf((", towrite: %d\n",(u_int32_t)towrite));
446
447 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
448 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
449#ifdef NTFS_DEBUG
450 if (error)
451 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
452#endif
453
454 return (error);
455}
456
457int
458ntfs_access(ap)
459 struct vop_access_args /* {
460 struct vnode *a_vp;
461 int a_mode;
462 struct ucred *a_cred;
463 struct proc *a_p;
464 } */ *ap;
465{
466 struct vnode *vp = ap->a_vp;
467 struct ntnode *ip = VTONT(vp);
468 struct ucred *cred = ap->a_cred;
469 mode_t mask, mode = ap->a_mode;
470 register gid_t *gp;
471 int i;
472#ifdef QUOTA
473 int error;
474#endif
475
476 dprintf(("ntfs_access: %d\n",ip->i_number));
477
478 /*
479 * Disallow write attempts on read-only file systems;
480 * unless the file is a socket, fifo, or a block or
481 * character device resident on the file system.
482 */
483 if (mode & VWRITE) {
484 switch ((int)vp->v_type) {
485 case VDIR:
486 case VLNK:
487 case VREG:
488 if (vp->v_mount->mnt_flag & MNT_RDONLY)
489 return (EROFS);
490#ifdef QUOTA
491 if (error = getinoquota(ip))
492 return (error);
493#endif
494 break;
495 }
496 }
497
498 /* Otherwise, user id 0 always gets access. */
499 if (cred->cr_uid == 0)
500 return (0);
501
502 mask = 0;
503
504 /* Otherwise, check the owner. */
505 if (cred->cr_uid == ip->i_mp->ntm_uid) {
506 if (mode & VEXEC)
507 mask |= S_IXUSR;
508 if (mode & VREAD)
509 mask |= S_IRUSR;
510 if (mode & VWRITE)
511 mask |= S_IWUSR;
512 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
513 }
514
515 /* Otherwise, check the groups. */
516 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
517 if (ip->i_mp->ntm_gid == *gp) {
518 if (mode & VEXEC)
519 mask |= S_IXGRP;
520 if (mode & VREAD)
521 mask |= S_IRGRP;
522 if (mode & VWRITE)
523 mask |= S_IWGRP;
524 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
525 }
526
527 /* Otherwise, check everyone else. */
528 if (mode & VEXEC)
529 mask |= S_IXOTH;
530 if (mode & VREAD)
531 mask |= S_IROTH;
532 if (mode & VWRITE)
533 mask |= S_IWOTH;
534 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
535}
536
537/*
538 * Open called.
539 *
540 * Nothing to do.
541 */
542/* ARGSUSED */
543static int
544ntfs_open(ap)
545 struct vop_open_args /* {
546 struct vnode *a_vp;
547 int a_mode;
548 struct ucred *a_cred;
549 struct proc *a_p;
550 } */ *ap;
551{
552#if NTFS_DEBUG
553 register struct vnode *vp = ap->a_vp;
554 register struct ntnode *ip = VTONT(vp);
555
556 printf("ntfs_open: %d\n",ip->i_number);
557#endif
558
559 /*
560 * Files marked append-only must be opened for appending.
561 */
562
563 return (0);
564}
565
566/*
567 * Close called.
568 *
569 * Update the times on the inode.
570 */
571/* ARGSUSED */
572static int
573ntfs_close(ap)
574 struct vop_close_args /* {
575 struct vnode *a_vp;
576 int a_fflag;
577 struct ucred *a_cred;
578 struct proc *a_p;
579 } */ *ap;
580{
581#if NTFS_DEBUG
582 register struct vnode *vp = ap->a_vp;
583 register struct ntnode *ip = VTONT(vp);
584
585 printf("ntfs_close: %d\n",ip->i_number);
586#endif
587
588 return (0);
589}
590
591int
592ntfs_readdir(ap)
593 struct vop_readdir_args /* {
594 struct vnode *a_vp;
595 struct uio *a_uio;
596 struct ucred *a_cred;
597 int *a_ncookies;
598 u_int **cookies;
599 } */ *ap;
600{
601 register struct vnode *vp = ap->a_vp;
602 register struct fnode *fp = VTOF(vp);
603 register struct ntnode *ip = FTONT(fp);
604 struct uio *uio = ap->a_uio;
605 struct ntfsmount *ntmp = ip->i_mp;
606 int i, error = 0;
607 u_int32_t faked = 0, num;
608 int ncookies = 0;
609 struct dirent cde;
610 off_t off;
611
612 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
613
614 off = uio->uio_offset;
615
616 /* Simulate . in every dir except ROOT */
617 if( ip->i_number != NTFS_ROOTINO ) {
618 struct dirent dot = { NTFS_ROOTINO,
619 sizeof(struct dirent), DT_DIR, 1, "." };
620
621 if( uio->uio_offset < sizeof(struct dirent) ) {
622 dot.d_fileno = ip->i_number;
623 error = uiomove((char *)&dot,sizeof(struct dirent),uio);
624 if(error)
625 return (error);
626
627 ncookies ++;
628 }
629 }
630
631 /* Simulate .. in every dir including ROOT */
632 if( uio->uio_offset < 2 * sizeof(struct dirent) ) {
633 struct dirent dotdot = { NTFS_ROOTINO,
634 sizeof(struct dirent), DT_DIR, 2, ".." };
635
636 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio);
637 if(error)
638 return (error);
639
640 ncookies ++;
641 }
642
643 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
644 num = uio->uio_offset / sizeof(struct dirent) - faked;
645
646 while( uio->uio_resid >= sizeof(struct dirent) ) {
647 struct attr_indexentry *iep;
648
649 error = ntfs_ntreaddir(ntmp, fp, num, &iep);
650
651 if(error)
652 return (error);
653
654 if( NULL == iep )
655 break;
656
657 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
658 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
659 {
660 if(!ntfs_isnamepermitted(ntmp,iep))
661 continue;
662
663 for(i=0; i<iep->ie_fnamelen; i++) {
664 cde.d_name[i] = NTFS_U28(iep->ie_fname[i]);
665 }
666 cde.d_name[i] = '\0';
667 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
668 num, cde.d_name, iep->ie_fnametype,
669 iep->ie_flag));
670 cde.d_namlen = iep->ie_fnamelen;
671 cde.d_fileno = iep->ie_number;
672 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
673 cde.d_reclen = sizeof(struct dirent);
674 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg"));
675
676 error = uiomove((char *)&cde, sizeof(struct dirent), uio);
677 if(error)
678 return (error);
679
680 ncookies++;
681 num++;
682 }
683 }
684
685 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
686 ncookies,(u_int)(uio->uio_offset - off)));
687 dprintf(("ntfs_readdir: off: %d resid: %d\n",
688 (u_int32_t)uio->uio_offset,uio->uio_resid));
689
690 if (!error && ap->a_ncookies != NULL) {
691 struct dirent* dpStart;
692 struct dirent* dp;
693#if defined(__FreeBSD__)
694 u_long *cookies;
695 u_long *cookiep;
696#else /* defined(__NetBSD__) */
697 off_t *cookies;
698 off_t *cookiep;
699#endif
700
701 ddprintf(("ntfs_readdir: %d cookies\n",ncookies));
702 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
703 panic("ntfs_readdir: unexpected uio from NFS server");
704 dpStart = (struct dirent *)
705 ((caddr_t)uio->uio_iov->iov_base -
706 (uio->uio_offset - off));
707#if defined(__FreeBSD__)
708 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
709 M_TEMP, M_WAITOK);
710#else /* defined(__NetBSD__) */
711 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
712 M_TEMP, M_WAITOK);
713#endif
714 for (dp = dpStart, cookiep = cookies, i=0;
715 i < ncookies;
716 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
717 off += dp->d_reclen;
718 *cookiep++ = (u_int) off;
719 }
720 *ap->a_ncookies = ncookies;
721 *ap->a_cookies = cookies;
722 }
723/*
724 if (ap->a_eofflag)
725 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
726*/
727 return (error);
728}
729
730int
731ntfs_lookup(ap)
732 struct vop_lookup_args /* {
733 struct vnode *a_dvp;
734 struct vnode **a_vpp;
735 struct componentname *a_cnp;
736 } */ *ap;
737{
738 register struct vnode *dvp = ap->a_dvp;
739 register struct ntnode *dip = VTONT(dvp);
740 struct ntfsmount *ntmp = dip->i_mp;
741 struct componentname *cnp = ap->a_cnp;
742 struct ucred *cred = cnp->cn_cred;
743 int error;
744 int lockparent = cnp->cn_flags & LOCKPARENT;
745#if NTFS_DEBUG
746 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
747#endif
748 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
749 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
750 dip->i_number, lockparent, wantparent));
751
752 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
753 if(error)
754 return (error);
755
756 if ((cnp->cn_flags & ISLASTCN) &&
757 (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
758 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
759 return (EROFS);
760
761#ifdef __NetBSD__
762 /*
763 * We now have a segment name to search for, and a directory
764 * to search.
765 *
766 * Before tediously performing a linear scan of the directory,
767 * check the name cache to see if the directory/name pair
768 * we are looking for is known already.
769 */
770 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
771 return (error);
772#endif
773
774 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
775 dprintf(("ntfs_lookup: faking . directory in %d\n",
776 dip->i_number));
777
778 VREF(dvp);
779 *ap->a_vpp = dvp;
780 error = 0;
781 } else if (cnp->cn_flags & ISDOTDOT) {
782 struct ntvattr *vap;
783
784 dprintf(("ntfs_lookup: faking .. directory in %d\n",
785 dip->i_number));
786
787 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
788 if(error)
789 return (error);
790
791 VOP__UNLOCK(dvp,0,cnp->cn_proc);
792 cnp->cn_flags |= PDIRUNLOCK;
793
794 dprintf(("ntfs_lookup: parentdir: %d\n",
795 vap->va_a_name->n_pnumber));
796 error = VFS_VGET(ntmp->ntm_mountp,
797 vap->va_a_name->n_pnumber,ap->a_vpp);
798 ntfs_ntvattrrele(vap);
799 if (error) {
800 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_proc)==0)
801 cnp->cn_flags &= ~PDIRUNLOCK;
802 return (error);
803 }
804
805 if (lockparent && (cnp->cn_flags & ISLASTCN)) {
806 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_proc);
807 if (error) {
808 vput( *(ap->a_vpp) );
809 return (error);
810 }
811 cnp->cn_flags &= ~PDIRUNLOCK;
812 }
813 } else {
814 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
815 if (error) {
816 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
817 return (error);
818 }
819
820 dprintf(("ntfs_lookup: found ino: %d\n",
821 VTONT(*ap->a_vpp)->i_number));
822
823 if(!lockparent || !(cnp->cn_flags & ISLASTCN))
824 VOP__UNLOCK(dvp, 0, cnp->cn_proc);
825 }
826
827 if (cnp->cn_flags & MAKEENTRY)
828 cache_enter(dvp, *ap->a_vpp, cnp);
829
830 return (error);
831}
832
833#if defined(__FreeBSD__)
834/*
835 * Flush the blocks of a file to disk.
836 *
837 * This function is worthless for vnodes that represent directories. Maybe we
838 * could just do a sync if they try an fsync on a directory file.
839 */
840static int
841ntfs_fsync(ap)
842 struct vop_fsync_args /* {
843 struct vnode *a_vp;
844 struct ucred *a_cred;
845 int a_waitfor;
846 struct proc *a_p;
847 } */ *ap;
848{
849 return (0);
850}
851#endif
852
853/*
854 * Return POSIX pathconf information applicable to NTFS filesystem
855 */
856int
857ntfs_pathconf(v)
858 void *v;
859{
860 struct vop_pathconf_args /* {
861 struct vnode *a_vp;
862 int a_name;
863 register_t *a_retval;
864 } */ *ap = v;
865
866 switch (ap->a_name) {
867 case _PC_LINK_MAX:
868 *ap->a_retval = 1;
869 return (0);
870 case _PC_NAME_MAX:
871 *ap->a_retval = NTFS_MAXFILENAME;
872 return (0);
873 case _PC_PATH_MAX:
874 *ap->a_retval = PATH_MAX;
875 return (0);
876 case _PC_CHOWN_RESTRICTED:
877 *ap->a_retval = 1;
878 return (0);
879 case _PC_NO_TRUNC:
880 *ap->a_retval = 0;
881 return (0);
882#if defined(__NetBSD__)
883 case _PC_SYNC_IO:
884 *ap->a_retval = 1;
885 return (0);
886 case _PC_FILESIZEBITS:
887 *ap->a_retval = 64;
888 return (0);
889#endif
890 default:
891 return (EINVAL);
892 }
893 /* NOTREACHED */
894}
895
896/*
897 * Global vfs data structures
898 */
899vop_t **ntfs_vnodeop_p;
900#if defined(__FreeBSD__)
901static
902struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
903 { &vop_default_desc, (vop_t *)vop_defaultop },
904
905 { &vop_getattr_desc, (vop_t *)ntfs_getattr },
906 { &vop_inactive_desc, (vop_t *)ntfs_inactive },
907 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
908 { &vop_print_desc, (vop_t *)ntfs_print },
909 { &vop_pathconf_desc, ntfs_pathconf },
910
911 { &vop_islocked_desc, (vop_t *)vop_stdislocked },
912 { &vop_unlock_desc, (vop_t *)vop_stdunlock },
913 { &vop_lock_desc, (vop_t *)vop_stdlock },
914 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
915 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
916
917 { &vop_access_desc, (vop_t *)ntfs_access },
918 { &vop_close_desc, (vop_t *)ntfs_close },
919 { &vop_open_desc, (vop_t *)ntfs_open },
920 { &vop_readdir_desc, (vop_t *)ntfs_readdir },
921 { &vop_fsync_desc, (vop_t *)ntfs_fsync },
922
923 { &vop_bmap_desc, (vop_t *)ntfs_bmap },
924 { &vop_getpages_desc, (vop_t *) ntfs_getpages },
925 { &vop_putpages_desc, (vop_t *) ntfs_putpages },
926 { &vop_strategy_desc, (vop_t *)ntfs_strategy },
927 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
928 { &vop_read_desc, (vop_t *)ntfs_read },
929 { &vop_write_desc, (vop_t *)ntfs_write },
930
931 { NULL, NULL }
932};
933
934static
935struct vnodeopv_desc ntfs_vnodeop_opv_desc =
936 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
937
938VNODEOP_SET(ntfs_vnodeop_opv_desc);
939
940#else /* !FreeBSD */
941
942struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
943 { &vop_default_desc, (vop_t *) ntfs_bypass },
944 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
945 { &vop_create_desc, genfs_eopnotsupp }, /* create */
946 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
947 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */
948 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */
949 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */
950 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
951 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
952 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */
953 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */
954 { &vop_lease_desc, genfs_lease_check }, /* lease */
955 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
956 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
957 { &vop_poll_desc, genfs_poll }, /* poll */
958 { &vop_revoke_desc, genfs_revoke }, /* revoke */
959 { &vop_mmap_desc, genfs_eopnotsupp }, /* mmap */
960 { &vop_fsync_desc, genfs_fsync }, /* fsync */
961 { &vop_seek_desc, genfs_seek }, /* seek */
962 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */
963 { &vop_link_desc, genfs_eopnotsupp }, /* link */
964 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */
965 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
966 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
967 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
968 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
969 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
970 { &vop_abortop_desc, genfs_abortop }, /* abortop */
971 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
972 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
973 { &vop_lock_desc, genfs_lock }, /* lock */
974 { &vop_unlock_desc, genfs_unlock }, /* unlock */
975 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
976 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
977 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */
978 { &vop_islocked_desc, genfs_islocked }, /* islocked */
979 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
980 { &vop_advlock_desc, genfs_nullop }, /* advlock */
981 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */
982 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */
983 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */
984 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */
985 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */
986 { &vop_update_desc, genfs_eopnotsupp }, /* update */
987 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
988 { (struct vnodeop_desc *)NULL, (int (*) __P((void *)))NULL }
989};
990struct vnodeopv_desc ntfs_vnodeop_opv_desc =
991 { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
992
993#endif