Add NetGear FA-511 support
[dragonfly.git] / sys / vfs / ntfs / ntfs_vnops.c
CommitLineData
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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 $
30365587 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.30 2006/04/09 17:51:28 dillon Exp $
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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>
dadab5e9 51#include <sys/proc.h>
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52#include <sys/namei.h>
53#include <sys/malloc.h>
54#include <sys/buf.h>
55#include <sys/dirent.h>
7bf50a33 56#include <machine/limits.h>
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57
58#include <vm/vm.h>
59#include <vm/vm_param.h>
60#if defined(__NetBSD__)
61#include <vm/vm_prot.h>
62#endif
63#include <vm/vm_page.h>
64#include <vm/vm_object.h>
65#include <vm/vm_pager.h>
08c23b99 66#if defined(__DragonFly__)
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67#include <vm/vnode_pager.h>
68#endif
69#include <vm/vm_extern.h>
70
71#include <sys/sysctl.h>
72
73/*#define NTFS_DEBUG 1*/
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74#include "ntfs.h"
75#include "ntfs_inode.h"
76#include "ntfs_subr.h"
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77#if defined(__NetBSD__)
78#include <miscfs/specfs/specdev.h>
79#include <miscfs/genfs/genfs.h>
80#endif
81
82#include <sys/unistd.h> /* for pathconf(2) constants */
83
a6ee311a
RG
84static int ntfs_read (struct vop_read_args *);
85static int ntfs_write (struct vop_write_args *ap);
86static int ntfs_getattr (struct vop_getattr_args *ap);
87static int ntfs_inactive (struct vop_inactive_args *ap);
88static int ntfs_print (struct vop_print_args *ap);
89static int ntfs_reclaim (struct vop_reclaim_args *ap);
90static int ntfs_strategy (struct vop_strategy_args *ap);
91static int ntfs_access (struct vop_access_args *ap);
92static int ntfs_open (struct vop_open_args *ap);
93static int ntfs_close (struct vop_close_args *ap);
94static int ntfs_readdir (struct vop_readdir_args *ap);
e62afb5f 95static int ntfs_lookup (struct vop_old_lookup_args *ap);
a6ee311a 96static int ntfs_bmap (struct vop_bmap_args *ap);
08c23b99 97#if defined(__DragonFly__)
a6ee311a
RG
98static int ntfs_getpages (struct vop_getpages_args *ap);
99static int ntfs_putpages (struct vop_putpages_args *);
100static int ntfs_fsync (struct vop_fsync_args *ap);
984263bc 101#else
2d3e977e 102static int ntfs_bypass (struct vop_generic_args *);
984263bc 103#endif
a6ee311a 104static int ntfs_pathconf (void *);
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105
106int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
107
08c23b99 108#if defined(__DragonFly__)
984263bc 109int
cd0a65a2 110ntfs_getpages(struct vop_getpages_args *ap)
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111{
112 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
113 ap->a_reqpage);
114}
115
116int
cd0a65a2 117ntfs_putpages(struct vop_putpages_args *ap)
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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.
cd0a65a2 126 *
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127 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, struct vnode **a_vpp,
128 * daddr_t *a_doffsetp, int *a_runp, int *a_runb)
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129 */
130int
cd0a65a2 131ntfs_bmap(struct vop_bmap_args *ap)
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132{
133 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
134 if (ap->a_vpp != NULL)
135 *ap->a_vpp = ap->a_vp;
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136 if (ap->a_doffsetp != NULL)
137 *ap->a_doffsetp = ap->a_loffset;
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138 if (ap->a_runp != NULL)
139 *ap->a_runp = 0;
140#if !defined(__NetBSD__)
141 if (ap->a_runb != NULL)
142 *ap->a_runb = 0;
143#endif
144 return (0);
145}
146
cd0a65a2
CP
147/*
148 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
149 * struct ucred *a_cred)
150 */
984263bc 151static int
cd0a65a2 152ntfs_read(struct vop_read_args *ap)
984263bc 153{
34ee9825
RG
154 struct vnode *vp = ap->a_vp;
155 struct fnode *fp = VTOF(vp);
156 struct ntnode *ip = FTONT(fp);
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157 struct uio *uio = ap->a_uio;
158 struct ntfsmount *ntmp = ip->i_mp;
159 struct buf *bp;
160 daddr_t cn;
161 int resid, off, toread;
162 int error;
163
164 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));
165
166 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
167
168 /* don't allow reading after end of file */
169 if (uio->uio_offset > fp->f_size)
170 return (0);
171
172 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset);
173
174 dprintf((", resid: %d\n", resid));
175
176 error = 0;
177 while (resid) {
178 cn = ntfs_btocn(uio->uio_offset);
179 off = ntfs_btocnoff(uio->uio_offset);
180
181 toread = min(off + resid, ntfs_cntob(1));
182
54078292 183 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp);
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184 if (error) {
185 brelse(bp);
186 break;
187 }
188
189 error = uiomove(bp->b_data + off, toread - off, uio);
190 if(error) {
191 brelse(bp);
192 break;
193 }
194 brelse(bp);
195
196 resid -= toread - off;
197 }
198
199 return (error);
200}
201
08c23b99 202#if !defined(__DragonFly__)
984263bc 203
cd0a65a2
CP
204/*
205 * ntfs_bypass(struct vnodeop_desc *a_desc, ...)
206 */
984263bc 207static int
cd0a65a2 208ntfs_bypass(struct vop_generic_args *ap)
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209{
210 int error = ENOTTY;
211 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
212 return (error);
213}
214
215#endif
216
cd0a65a2
CP
217/*
218 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred,
219 * struct thread *a_td)
220 */
984263bc 221static int
cd0a65a2 222ntfs_getattr(struct vop_getattr_args *ap)
984263bc 223{
34ee9825
RG
224 struct vnode *vp = ap->a_vp;
225 struct fnode *fp = VTOF(vp);
226 struct ntnode *ip = FTONT(fp);
227 struct vattr *vap = ap->a_vap;
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228
229 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
230
08c23b99 231#if defined(__DragonFly__)
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232 vap->va_fsid = dev2udev(ip->i_dev);
233#else /* NetBSD */
234 vap->va_fsid = ip->i_dev;
235#endif
236 vap->va_fileid = ip->i_number;
237 vap->va_mode = ip->i_mp->ntm_mode;
238 vap->va_nlink = ip->i_nlink;
239 vap->va_uid = ip->i_mp->ntm_uid;
240 vap->va_gid = ip->i_mp->ntm_gid;
241 vap->va_rdev = 0; /* XXX UNODEV ? */
242 vap->va_size = fp->f_size;
243 vap->va_bytes = fp->f_allocated;
244 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
245 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
246 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
247 vap->va_flags = ip->i_flag;
248 vap->va_gen = 0;
249 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
250 vap->va_type = vp->v_type;
251 vap->va_filerev = 0;
252 return (0);
253}
254
255
256/*
257 * Last reference to an ntnode. If necessary, write or delete it.
cd0a65a2
CP
258 *
259 * ntfs_inactive(struct vnode *a_vp)
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260 */
261int
cd0a65a2 262ntfs_inactive(struct vop_inactive_args *ap)
984263bc 263{
34ee9825 264 struct vnode *vp = ap->a_vp;
984263bc 265#ifdef NTFS_DEBUG
34ee9825 266 struct ntnode *ip = VTONT(vp);
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MD
267#endif
268
269 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
270
30365587 271 if (ntfs_prtactive && vp->v_usecount != 1)
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272 vprint("ntfs_inactive: pushing active", vp);
273
5fd012e0
MD
274 /*
275 * XXX since we don't support any filesystem changes
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276 * right now, nothing more needs to be done
277 */
278 return (0);
279}
280
281/*
282 * Reclaim an fnode/ntnode so that it can be used for other purposes.
cd0a65a2
CP
283 *
284 * ntfs_reclaim(struct vnode *a_vp)
984263bc
MD
285 */
286int
cd0a65a2 287ntfs_reclaim(struct vop_reclaim_args *ap)
984263bc 288{
34ee9825
RG
289 struct vnode *vp = ap->a_vp;
290 struct fnode *fp = VTOF(vp);
291 struct ntnode *ip = FTONT(fp);
984263bc
MD
292 int error;
293
294 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
295
30365587 296 if (ntfs_prtactive && vp->v_usecount != 1)
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297 vprint("ntfs_reclaim: pushing active", vp);
298
299 if ((error = ntfs_ntget(ip)) != 0)
300 return (error);
301
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MD
302 ntfs_frele(fp);
303 ntfs_ntput(ip);
304 vp->v_data = NULL;
305
306 return (0);
307}
308
cd0a65a2
CP
309/*
310 * ntfs_print(struct vnode *a_vp)
311 */
984263bc 312static int
cd0a65a2 313ntfs_print(struct vop_print_args *ap)
984263bc
MD
314{
315 return (0);
316}
317
318/*
319 * Calculate the logical to physical mapping if not done already,
320 * then call the device strategy routine.
cd0a65a2 321 *
81b5c339 322 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio)
984263bc
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323 */
324int
cd0a65a2 325ntfs_strategy(struct vop_strategy_args *ap)
984263bc 326{
81b5c339
MD
327 struct bio *bio = ap->a_bio;
328 struct buf *bp = bio->bio_buf;
329 struct vnode *vp = ap->a_vp;
34ee9825
RG
330 struct fnode *fp = VTOF(vp);
331 struct ntnode *ip = FTONT(fp);
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MD
332 struct ntfsmount *ntmp = ip->i_mp;
333 int error;
334
54078292
MD
335 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n",
336 bp->b_loffset, bio->bio_offset));
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MD
337
338 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
339 (u_int32_t)bp->b_bcount,bp->b_flags));
340
341 if (bp->b_flags & B_READ) {
342 u_int32_t toread;
343
54078292 344 if (bio->bio_offset >= fp->f_size) {
984263bc
MD
345 clrbuf(bp);
346 error = 0;
347 } else {
348 toread = min(bp->b_bcount,
54078292 349 fp->f_size - bio->bio_offset);
984263bc
MD
350 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
351 toread,(u_int32_t)fp->f_size));
352
353 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
54078292 354 fp->f_attrname, bio->bio_offset,
984263bc
MD
355 toread, bp->b_data, NULL);
356
357 if (error) {
358 printf("ntfs_strategy: ntfs_readattr failed\n");
359 bp->b_error = error;
360 bp->b_flags |= B_ERROR;
361 }
362
363 bzero(bp->b_data + toread, bp->b_bcount - toread);
364 }
365 } else {
366 size_t tmp;
367 u_int32_t towrite;
368
54078292 369 if (bio->bio_offset + bp->b_bcount >= fp->f_size) {
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MD
370 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
371 bp->b_error = error = EFBIG;
372 bp->b_flags |= B_ERROR;
373 } else {
374 towrite = min(bp->b_bcount,
54078292 375 fp->f_size - bio->bio_offset);
984263bc
MD
376 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
377 towrite,(u_int32_t)fp->f_size));
378
379 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
54078292 380 fp->f_attrname, bio->bio_offset,towrite,
984263bc
MD
381 bp->b_data, &tmp, NULL);
382
383 if (error) {
384 printf("ntfs_strategy: ntfs_writeattr fail\n");
385 bp->b_error = error;
386 bp->b_flags |= B_ERROR;
387 }
388 }
389 }
81b5c339 390 biodone(bio);
984263bc
MD
391 return (error);
392}
393
cd0a65a2
CP
394/*
395 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
396 * struct ucred *a_cred)
397 */
984263bc 398static int
cd0a65a2 399ntfs_write(struct vop_write_args *ap)
984263bc 400{
34ee9825
RG
401 struct vnode *vp = ap->a_vp;
402 struct fnode *fp = VTOF(vp);
403 struct ntnode *ip = FTONT(fp);
984263bc
MD
404 struct uio *uio = ap->a_uio;
405 struct ntfsmount *ntmp = ip->i_mp;
406 u_int64_t towrite;
407 size_t written;
408 int error;
409
410 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));
411 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
412
413 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
414 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
415 return (EFBIG);
416 }
417
418 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
419
420 dprintf((", towrite: %d\n",(u_int32_t)towrite));
421
422 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
423 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
424#ifdef NTFS_DEBUG
425 if (error)
426 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
427#endif
428
429 return (error);
430}
431
cd0a65a2
CP
432/*
433 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
434 * struct thread *a_td)
435 */
984263bc 436int
cd0a65a2 437ntfs_access(struct vop_access_args *ap)
984263bc
MD
438{
439 struct vnode *vp = ap->a_vp;
440 struct ntnode *ip = VTONT(vp);
441 struct ucred *cred = ap->a_cred;
442 mode_t mask, mode = ap->a_mode;
34ee9825 443 gid_t *gp;
984263bc
MD
444 int i;
445#ifdef QUOTA
446 int error;
447#endif
448
449 dprintf(("ntfs_access: %d\n",ip->i_number));
450
451 /*
452 * Disallow write attempts on read-only file systems;
453 * unless the file is a socket, fifo, or a block or
454 * character device resident on the file system.
455 */
456 if (mode & VWRITE) {
457 switch ((int)vp->v_type) {
458 case VDIR:
459 case VLNK:
460 case VREG:
461 if (vp->v_mount->mnt_flag & MNT_RDONLY)
462 return (EROFS);
463#ifdef QUOTA
464 if (error = getinoquota(ip))
465 return (error);
466#endif
467 break;
468 }
469 }
470
471 /* Otherwise, user id 0 always gets access. */
472 if (cred->cr_uid == 0)
473 return (0);
474
475 mask = 0;
476
477 /* Otherwise, check the owner. */
478 if (cred->cr_uid == ip->i_mp->ntm_uid) {
479 if (mode & VEXEC)
480 mask |= S_IXUSR;
481 if (mode & VREAD)
482 mask |= S_IRUSR;
483 if (mode & VWRITE)
484 mask |= S_IWUSR;
485 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
486 }
487
488 /* Otherwise, check the groups. */
489 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
490 if (ip->i_mp->ntm_gid == *gp) {
491 if (mode & VEXEC)
492 mask |= S_IXGRP;
493 if (mode & VREAD)
494 mask |= S_IRGRP;
495 if (mode & VWRITE)
496 mask |= S_IWGRP;
497 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
498 }
499
500 /* Otherwise, check everyone else. */
501 if (mode & VEXEC)
502 mask |= S_IXOTH;
503 if (mode & VREAD)
504 mask |= S_IROTH;
505 if (mode & VWRITE)
506 mask |= S_IWOTH;
507 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
508}
509
510/*
511 * Open called.
512 *
513 * Nothing to do.
cd0a65a2
CP
514 *
515 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
516 * struct thread *a_td)
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517 */
518/* ARGSUSED */
519static int
cd0a65a2 520ntfs_open(struct vop_open_args *ap)
984263bc 521{
8ddc6004 522 return (vop_stdopen(ap));
984263bc
MD
523}
524
525/*
526 * Close called.
527 *
528 * Update the times on the inode.
cd0a65a2
CP
529 *
530 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred,
531 * struct thread *a_td)
984263bc
MD
532 */
533/* ARGSUSED */
534static int
cd0a65a2 535ntfs_close(struct vop_close_args *ap)
984263bc
MD
536{
537#if NTFS_DEBUG
34ee9825
RG
538 struct vnode *vp = ap->a_vp;
539 struct ntnode *ip = VTONT(vp);
984263bc
MD
540
541 printf("ntfs_close: %d\n",ip->i_number);
542#endif
543
8ddc6004 544 return (vop_stdclose(ap));
984263bc
MD
545}
546
cd0a65a2
CP
547/*
548 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
549 * int *a_ncookies, u_int **cookies)
550 */
984263bc 551int
cd0a65a2 552ntfs_readdir(struct vop_readdir_args *ap)
984263bc 553{
34ee9825
RG
554 struct vnode *vp = ap->a_vp;
555 struct fnode *fp = VTOF(vp);
556 struct ntnode *ip = FTONT(fp);
984263bc
MD
557 struct uio *uio = ap->a_uio;
558 struct ntfsmount *ntmp = ip->i_mp;
559 int i, error = 0;
7bf50a33 560 u_int32_t faked = 0, num, off;
984263bc 561 int ncookies = 0;
7bf50a33 562 char convname[NTFS_MAXFILENAME + 1];
984263bc
MD
563
564 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
565
7bf50a33
SS
566 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX)
567 return (EINVAL);
984263bc 568
7bf50a33
SS
569 /*
570 * uio->uio_offset carries the number of the entry
571 * where we should start returning dirents.
572 *
573 * We fake up "." if we're not reading the FS root
574 * and we always fake up "..".
575 *
576 * off contains the entry we are starting at,
577 * num increments while we are reading.
578 */
984263bc 579
7bf50a33
SS
580 off = num = uio->uio_offset;
581 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
984263bc 582
7bf50a33
SS
583 /* Simulate . in every dir except ROOT */
584 if (ip->i_number != NTFS_ROOTINO && num == 0) {
585 if (vop_write_dirent(&error, uio, ip->i_number,
586 DT_DIR, 1, "."))
587 return (0);
588 if (error)
589 return (error);
590
591 num++;
592 ncookies++;
984263bc
MD
593 }
594
595 /* Simulate .. in every dir including ROOT */
7bf50a33
SS
596 if (num == faked - 1) {
597 /* XXX NTFS_ROOTINO seems to be wrong here */
598 if (vop_write_dirent(&error, uio, NTFS_ROOTINO,
599 DT_DIR, 2, ".."))
600 goto readdone;
984263bc
MD
601 if(error)
602 return (error);
603
7bf50a33
SS
604 num++;
605 ncookies++;
984263bc
MD
606 }
607
7bf50a33 608 for (;;) {
984263bc
MD
609 struct attr_indexentry *iep;
610
7bf50a33
SS
611 /*
612 * num is the number of the entry we will return,
613 * but ntfs_ntreaddir takes the entry number of the
614 * ntfs directory listing, so subtract the faked
615 * . and .. entries.
616 */
617 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep);
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MD
618
619 if(error)
620 return (error);
621
622 if( NULL == iep )
623 break;
624
7bf50a33 625 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST);
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MD
626 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
627 {
628 if(!ntfs_isnamepermitted(ntmp,iep))
629 continue;
630
7bf50a33
SS
631 for (i=0; i < iep->ie_fnamelen; i++)
632 convname[i] = NTFS_U28(iep->ie_fname[i]);
633 convname[i] = '\0';
634
635 if (vop_write_dirent(&error, uio, iep->ie_number,
636 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG,
637 iep->ie_fnamelen, convname))
638 goto readdone;
639
640 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, "
641 "flag: %d, %s\n",
642 ncookies, convname, iep->ie_fnametype,
643 iep->ie_flag,
644 (iep->ie_fflag & NTFS_FFLAG_DIR) ?
645 "dir" : "reg"));
646
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MD
647 if(error)
648 return (error);
649
650 ncookies++;
651 num++;
652 }
653 }
654
7bf50a33
SS
655readdone:
656 uio->uio_offset = num;
657
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MD
658 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
659 ncookies,(u_int)(uio->uio_offset - off)));
660 dprintf(("ntfs_readdir: off: %d resid: %d\n",
661 (u_int32_t)uio->uio_offset,uio->uio_resid));
662
663 if (!error && ap->a_ncookies != NULL) {
08c23b99 664#if defined(__DragonFly__)
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MD
665 u_long *cookies;
666 u_long *cookiep;
667#else /* defined(__NetBSD__) */
668 off_t *cookies;
669 off_t *cookiep;
670#endif
671
672 ddprintf(("ntfs_readdir: %d cookies\n",ncookies));
673 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
674 panic("ntfs_readdir: unexpected uio from NFS server");
08c23b99 675#if defined(__DragonFly__)
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MD
676 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
677 M_TEMP, M_WAITOK);
678#else /* defined(__NetBSD__) */
679 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
680 M_TEMP, M_WAITOK);
681#endif
7bf50a33
SS
682 cookiep = cookies;
683 while (off < num)
684 *cookiep++ = ++off;
685
984263bc
MD
686 *ap->a_ncookies = ncookies;
687 *ap->a_cookies = cookies;
688 }
689/*
690 if (ap->a_eofflag)
691 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
692*/
693 return (error);
694}
695
cd0a65a2
CP
696/*
697 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
698 * struct componentname *a_cnp)
699 */
984263bc 700int
e62afb5f 701ntfs_lookup(struct vop_old_lookup_args *ap)
984263bc 702{
34ee9825
RG
703 struct vnode *dvp = ap->a_dvp;
704 struct ntnode *dip = VTONT(dvp);
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MD
705 struct ntfsmount *ntmp = dip->i_mp;
706 struct componentname *cnp = ap->a_cnp;
984263bc 707 int error;
2b69e610 708 int lockparent = cnp->cn_flags & CNP_LOCKPARENT;
984263bc 709#if NTFS_DEBUG
2b69e610 710 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
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MD
711#endif
712 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
713 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
714 dip->i_number, lockparent, wantparent));
715
9df3a184
MD
716 *ap->a_vpp = NULL;
717
fad57d0e 718 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
984263bc
MD
719 dprintf(("ntfs_lookup: faking . directory in %d\n",
720 dip->i_number));
721
597aea93 722 vref(dvp);
984263bc
MD
723 *ap->a_vpp = dvp;
724 error = 0;
2b69e610 725 } else if (cnp->cn_flags & CNP_ISDOTDOT) {
984263bc
MD
726 struct ntvattr *vap;
727
728 dprintf(("ntfs_lookup: faking .. directory in %d\n",
729 dip->i_number));
730
731 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
732 if(error)
733 return (error);
734
dadab5e9 735 VOP__UNLOCK(dvp,0,cnp->cn_td);
2b69e610 736 cnp->cn_flags |= CNP_PDIRUNLOCK;
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MD
737
738 dprintf(("ntfs_lookup: parentdir: %d\n",
739 vap->va_a_name->n_pnumber));
740 error = VFS_VGET(ntmp->ntm_mountp,
741 vap->va_a_name->n_pnumber,ap->a_vpp);
742 ntfs_ntvattrrele(vap);
743 if (error) {
dadab5e9 744 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_td)==0)
2b69e610 745 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
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MD
746 return (error);
747 }
748
fad57d0e 749 if (lockparent) {
dadab5e9 750 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_td);
984263bc 751 if (error) {
9df3a184
MD
752 vput(*ap->a_vpp);
753 *ap->a_vpp = NULL;
984263bc
MD
754 return (error);
755 }
2b69e610 756 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
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MD
757 }
758 } else {
759 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
760 if (error) {
761 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
762 return (error);
763 }
764
765 dprintf(("ntfs_lookup: found ino: %d\n",
766 VTONT(*ap->a_vpp)->i_number));
767
fad57d0e 768 if (!lockparent)
dadab5e9 769 VOP__UNLOCK(dvp, 0, cnp->cn_td);
984263bc 770 }
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MD
771 return (error);
772}
773
08c23b99 774#if defined(__DragonFly__)
984263bc
MD
775/*
776 * Flush the blocks of a file to disk.
777 *
778 * This function is worthless for vnodes that represent directories. Maybe we
779 * could just do a sync if they try an fsync on a directory file.
cd0a65a2
CP
780 *
781 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
782 * struct thread *a_td)
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MD
783 */
784static int
cd0a65a2 785ntfs_fsync(struct vop_fsync_args *ap)
984263bc
MD
786{
787 return (0);
788}
789#endif
790
791/*
792 * Return POSIX pathconf information applicable to NTFS filesystem
793 */
794int
cd0a65a2 795ntfs_pathconf(void *v)
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MD
796{
797 struct vop_pathconf_args /* {
798 struct vnode *a_vp;
799 int a_name;
800 register_t *a_retval;
801 } */ *ap = v;
802
803 switch (ap->a_name) {
804 case _PC_LINK_MAX:
805 *ap->a_retval = 1;
806 return (0);
807 case _PC_NAME_MAX:
808 *ap->a_retval = NTFS_MAXFILENAME;
809 return (0);
810 case _PC_PATH_MAX:
811 *ap->a_retval = PATH_MAX;
812 return (0);
813 case _PC_CHOWN_RESTRICTED:
814 *ap->a_retval = 1;
815 return (0);
816 case _PC_NO_TRUNC:
817 *ap->a_retval = 0;
818 return (0);
819#if defined(__NetBSD__)
820 case _PC_SYNC_IO:
821 *ap->a_retval = 1;
822 return (0);
823 case _PC_FILESIZEBITS:
824 *ap->a_retval = 64;
825 return (0);
826#endif
827 default:
828 return (EINVAL);
829 }
830 /* NOTREACHED */
831}
832
833/*
834 * Global vfs data structures
835 */
984263bc 836struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
2d3e977e
MD
837 { &vop_default_desc, vop_defaultop },
838
625ddaba
JS
839 { &vop_getattr_desc, (vnodeopv_entry_t)ntfs_getattr },
840 { &vop_inactive_desc, (vnodeopv_entry_t)ntfs_inactive },
841 { &vop_reclaim_desc, (vnodeopv_entry_t)ntfs_reclaim },
842 { &vop_print_desc, (vnodeopv_entry_t)ntfs_print },
843 { &vop_pathconf_desc, (vnodeopv_entry_t)ntfs_pathconf },
844
845 { &vop_islocked_desc, (vnodeopv_entry_t)vop_stdislocked },
846 { &vop_unlock_desc, (vnodeopv_entry_t)vop_stdunlock },
847 { &vop_lock_desc, (vnodeopv_entry_t)vop_stdlock },
e62afb5f 848 { &vop_old_lookup_desc, (vnodeopv_entry_t)ntfs_lookup },
625ddaba
JS
849
850 { &vop_access_desc, (vnodeopv_entry_t)ntfs_access },
851 { &vop_close_desc, (vnodeopv_entry_t)ntfs_close },
852 { &vop_open_desc, (vnodeopv_entry_t)ntfs_open },
853 { &vop_readdir_desc, (vnodeopv_entry_t)ntfs_readdir },
854 { &vop_fsync_desc, (vnodeopv_entry_t)ntfs_fsync },
855
856 { &vop_bmap_desc, (vnodeopv_entry_t)ntfs_bmap },
857 { &vop_getpages_desc, (vnodeopv_entry_t)ntfs_getpages },
858 { &vop_putpages_desc, (vnodeopv_entry_t)ntfs_putpages },
859 { &vop_strategy_desc, (vnodeopv_entry_t)ntfs_strategy },
860 { &vop_bwrite_desc, (vnodeopv_entry_t)vop_stdbwrite },
861 { &vop_read_desc, (vnodeopv_entry_t)ntfs_read },
862 { &vop_write_desc, (vnodeopv_entry_t)ntfs_write },
984263bc
MD
863
864 { NULL, NULL }
865};
866