Fix problem with last commit that was breaking tcpdump.
[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 $
fad57d0e 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.19 2004/11/12 00:09:38 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>
56
57#include <vm/vm.h>
58#include <vm/vm_param.h>
59#if defined(__NetBSD__)
60#include <vm/vm_prot.h>
61#endif
62#include <vm/vm_page.h>
63#include <vm/vm_object.h>
64#include <vm/vm_pager.h>
08c23b99 65#if defined(__DragonFly__)
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66#include <vm/vnode_pager.h>
67#endif
68#include <vm/vm_extern.h>
69
70#include <sys/sysctl.h>
71
72/*#define NTFS_DEBUG 1*/
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73#include "ntfs.h"
74#include "ntfs_inode.h"
75#include "ntfs_subr.h"
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76#if defined(__NetBSD__)
77#include <miscfs/specfs/specdev.h>
78#include <miscfs/genfs/genfs.h>
79#endif
80
81#include <sys/unistd.h> /* for pathconf(2) constants */
82
a6ee311a
RG
83static int ntfs_read (struct vop_read_args *);
84static int ntfs_write (struct vop_write_args *ap);
85static int ntfs_getattr (struct vop_getattr_args *ap);
86static int ntfs_inactive (struct vop_inactive_args *ap);
87static int ntfs_print (struct vop_print_args *ap);
88static int ntfs_reclaim (struct vop_reclaim_args *ap);
89static int ntfs_strategy (struct vop_strategy_args *ap);
90static int ntfs_access (struct vop_access_args *ap);
91static int ntfs_open (struct vop_open_args *ap);
92static int ntfs_close (struct vop_close_args *ap);
93static int ntfs_readdir (struct vop_readdir_args *ap);
94static int ntfs_lookup (struct vop_lookup_args *ap);
95static int ntfs_bmap (struct vop_bmap_args *ap);
08c23b99 96#if defined(__DragonFly__)
a6ee311a
RG
97static int ntfs_getpages (struct vop_getpages_args *ap);
98static int ntfs_putpages (struct vop_putpages_args *);
99static int ntfs_fsync (struct vop_fsync_args *ap);
984263bc 100#else
2d3e977e 101static int ntfs_bypass (struct vop_generic_args *);
984263bc 102#endif
a6ee311a 103static int ntfs_pathconf (void *);
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104
105int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
106
08c23b99 107#if defined(__DragonFly__)
984263bc 108int
cd0a65a2 109ntfs_getpages(struct vop_getpages_args *ap)
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110{
111 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
112 ap->a_reqpage);
113}
114
115int
cd0a65a2 116ntfs_putpages(struct vop_putpages_args *ap)
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117{
118 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
119 ap->a_sync, ap->a_rtvals);
120}
121#endif
122
123/*
124 * This is a noop, simply returning what one has been given.
cd0a65a2
CP
125 *
126 * ntfs_bmap(struct vnode *a_vp, daddr_t a_bn, struct vnode **a_vpp,
127 * daddr_t *a_bnp, int *a_runp, int *a_runb)
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128 */
129int
cd0a65a2 130ntfs_bmap(struct vop_bmap_args *ap)
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131{
132 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
133 if (ap->a_vpp != NULL)
134 *ap->a_vpp = ap->a_vp;
135 if (ap->a_bnp != NULL)
136 *ap->a_bnp = ap->a_bn;
137 if (ap->a_runp != NULL)
138 *ap->a_runp = 0;
139#if !defined(__NetBSD__)
140 if (ap->a_runb != NULL)
141 *ap->a_runb = 0;
142#endif
143 return (0);
144}
145
cd0a65a2
CP
146/*
147 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
148 * struct ucred *a_cred)
149 */
984263bc 150static int
cd0a65a2 151ntfs_read(struct vop_read_args *ap)
984263bc 152{
34ee9825
RG
153 struct vnode *vp = ap->a_vp;
154 struct fnode *fp = VTOF(vp);
155 struct ntnode *ip = FTONT(fp);
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156 struct uio *uio = ap->a_uio;
157 struct ntfsmount *ntmp = ip->i_mp;
158 struct buf *bp;
159 daddr_t cn;
160 int resid, off, toread;
161 int error;
162
163 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));
164
165 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
166
167 /* don't allow reading after end of file */
168 if (uio->uio_offset > fp->f_size)
169 return (0);
170
171 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset);
172
173 dprintf((", resid: %d\n", resid));
174
175 error = 0;
176 while (resid) {
177 cn = ntfs_btocn(uio->uio_offset);
178 off = ntfs_btocnoff(uio->uio_offset);
179
180 toread = min(off + resid, ntfs_cntob(1));
181
3b568787 182 error = bread(vp, cn, ntfs_cntob(1), &bp);
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183 if (error) {
184 brelse(bp);
185 break;
186 }
187
188 error = uiomove(bp->b_data + off, toread - off, uio);
189 if(error) {
190 brelse(bp);
191 break;
192 }
193 brelse(bp);
194
195 resid -= toread - off;
196 }
197
198 return (error);
199}
200
08c23b99 201#if !defined(__DragonFly__)
984263bc 202
cd0a65a2
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203/*
204 * ntfs_bypass(struct vnodeop_desc *a_desc, ...)
205 */
984263bc 206static int
cd0a65a2 207ntfs_bypass(struct vop_generic_args *ap)
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208{
209 int error = ENOTTY;
210 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
211 return (error);
212}
213
214#endif
215
cd0a65a2
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216/*
217 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred,
218 * struct thread *a_td)
219 */
984263bc 220static int
cd0a65a2 221ntfs_getattr(struct vop_getattr_args *ap)
984263bc 222{
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223 struct vnode *vp = ap->a_vp;
224 struct fnode *fp = VTOF(vp);
225 struct ntnode *ip = FTONT(fp);
226 struct vattr *vap = ap->a_vap;
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227
228 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
229
08c23b99 230#if defined(__DragonFly__)
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231 vap->va_fsid = dev2udev(ip->i_dev);
232#else /* NetBSD */
233 vap->va_fsid = ip->i_dev;
234#endif
235 vap->va_fileid = ip->i_number;
236 vap->va_mode = ip->i_mp->ntm_mode;
237 vap->va_nlink = ip->i_nlink;
238 vap->va_uid = ip->i_mp->ntm_uid;
239 vap->va_gid = ip->i_mp->ntm_gid;
240 vap->va_rdev = 0; /* XXX UNODEV ? */
241 vap->va_size = fp->f_size;
242 vap->va_bytes = fp->f_allocated;
243 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
244 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
245 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
246 vap->va_flags = ip->i_flag;
247 vap->va_gen = 0;
248 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
249 vap->va_type = vp->v_type;
250 vap->va_filerev = 0;
251 return (0);
252}
253
254
255/*
256 * Last reference to an ntnode. If necessary, write or delete it.
cd0a65a2
CP
257 *
258 * ntfs_inactive(struct vnode *a_vp)
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MD
259 */
260int
cd0a65a2 261ntfs_inactive(struct vop_inactive_args *ap)
984263bc 262{
34ee9825 263 struct vnode *vp = ap->a_vp;
984263bc 264#ifdef NTFS_DEBUG
34ee9825 265 struct ntnode *ip = VTONT(vp);
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MD
266#endif
267
268 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
269
270 if (ntfs_prtactive && vp->v_usecount != 0)
271 vprint("ntfs_inactive: pushing active", vp);
272
5fd012e0
MD
273 /*
274 * XXX since we don't support any filesystem changes
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275 * right now, nothing more needs to be done
276 */
277 return (0);
278}
279
280/*
281 * Reclaim an fnode/ntnode so that it can be used for other purposes.
cd0a65a2
CP
282 *
283 * ntfs_reclaim(struct vnode *a_vp)
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MD
284 */
285int
cd0a65a2 286ntfs_reclaim(struct vop_reclaim_args *ap)
984263bc 287{
34ee9825
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288 struct vnode *vp = ap->a_vp;
289 struct fnode *fp = VTOF(vp);
290 struct ntnode *ip = FTONT(fp);
984263bc
MD
291 int error;
292
293 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
294
295 if (ntfs_prtactive && vp->v_usecount != 0)
296 vprint("ntfs_reclaim: pushing active", vp);
297
298 if ((error = ntfs_ntget(ip)) != 0)
299 return (error);
300
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MD
301 ntfs_frele(fp);
302 ntfs_ntput(ip);
303 vp->v_data = NULL;
304
305 return (0);
306}
307
cd0a65a2
CP
308/*
309 * ntfs_print(struct vnode *a_vp)
310 */
984263bc 311static int
cd0a65a2 312ntfs_print(struct vop_print_args *ap)
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MD
313{
314 return (0);
315}
316
317/*
318 * Calculate the logical to physical mapping if not done already,
319 * then call the device strategy routine.
cd0a65a2
CP
320 *
321 * ntfs_strategy(struct buf *a_bp)
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MD
322 */
323int
cd0a65a2 324ntfs_strategy(struct vop_strategy_args *ap)
984263bc 325{
34ee9825
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326 struct buf *bp = ap->a_bp;
327 struct vnode *vp = bp->b_vp;
328 struct fnode *fp = VTOF(vp);
329 struct ntnode *ip = FTONT(fp);
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MD
330 struct ntfsmount *ntmp = ip->i_mp;
331 int error;
332
08c23b99 333#ifdef __DragonFly__
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MD
334 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
335 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
336 (u_int32_t)bp->b_lblkno));
337#else
338 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
339 (u_int32_t)bp->b_blkno,
340 (u_int32_t)bp->b_lblkno));
341#endif
342
343 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
344 (u_int32_t)bp->b_bcount,bp->b_flags));
345
346 if (bp->b_flags & B_READ) {
347 u_int32_t toread;
348
349 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
350 clrbuf(bp);
351 error = 0;
352 } else {
353 toread = min(bp->b_bcount,
354 fp->f_size-ntfs_cntob(bp->b_blkno));
355 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
356 toread,(u_int32_t)fp->f_size));
357
358 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
359 fp->f_attrname, ntfs_cntob(bp->b_blkno),
360 toread, bp->b_data, NULL);
361
362 if (error) {
363 printf("ntfs_strategy: ntfs_readattr failed\n");
364 bp->b_error = error;
365 bp->b_flags |= B_ERROR;
366 }
367
368 bzero(bp->b_data + toread, bp->b_bcount - toread);
369 }
370 } else {
371 size_t tmp;
372 u_int32_t towrite;
373
374 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
375 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
376 bp->b_error = error = EFBIG;
377 bp->b_flags |= B_ERROR;
378 } else {
379 towrite = min(bp->b_bcount,
380 fp->f_size-ntfs_cntob(bp->b_blkno));
381 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
382 towrite,(u_int32_t)fp->f_size));
383
384 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
385 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
386 bp->b_data, &tmp, NULL);
387
388 if (error) {
389 printf("ntfs_strategy: ntfs_writeattr fail\n");
390 bp->b_error = error;
391 bp->b_flags |= B_ERROR;
392 }
393 }
394 }
395 biodone(bp);
396 return (error);
397}
398
cd0a65a2
CP
399/*
400 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
401 * struct ucred *a_cred)
402 */
984263bc 403static int
cd0a65a2 404ntfs_write(struct vop_write_args *ap)
984263bc 405{
34ee9825
RG
406 struct vnode *vp = ap->a_vp;
407 struct fnode *fp = VTOF(vp);
408 struct ntnode *ip = FTONT(fp);
984263bc
MD
409 struct uio *uio = ap->a_uio;
410 struct ntfsmount *ntmp = ip->i_mp;
411 u_int64_t towrite;
412 size_t written;
413 int error;
414
415 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));
416 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
417
418 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
419 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
420 return (EFBIG);
421 }
422
423 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
424
425 dprintf((", towrite: %d\n",(u_int32_t)towrite));
426
427 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
428 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
429#ifdef NTFS_DEBUG
430 if (error)
431 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
432#endif
433
434 return (error);
435}
436
cd0a65a2
CP
437/*
438 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
439 * struct thread *a_td)
440 */
984263bc 441int
cd0a65a2 442ntfs_access(struct vop_access_args *ap)
984263bc
MD
443{
444 struct vnode *vp = ap->a_vp;
445 struct ntnode *ip = VTONT(vp);
446 struct ucred *cred = ap->a_cred;
447 mode_t mask, mode = ap->a_mode;
34ee9825 448 gid_t *gp;
984263bc
MD
449 int i;
450#ifdef QUOTA
451 int error;
452#endif
453
454 dprintf(("ntfs_access: %d\n",ip->i_number));
455
456 /*
457 * Disallow write attempts on read-only file systems;
458 * unless the file is a socket, fifo, or a block or
459 * character device resident on the file system.
460 */
461 if (mode & VWRITE) {
462 switch ((int)vp->v_type) {
463 case VDIR:
464 case VLNK:
465 case VREG:
466 if (vp->v_mount->mnt_flag & MNT_RDONLY)
467 return (EROFS);
468#ifdef QUOTA
469 if (error = getinoquota(ip))
470 return (error);
471#endif
472 break;
473 }
474 }
475
476 /* Otherwise, user id 0 always gets access. */
477 if (cred->cr_uid == 0)
478 return (0);
479
480 mask = 0;
481
482 /* Otherwise, check the owner. */
483 if (cred->cr_uid == ip->i_mp->ntm_uid) {
484 if (mode & VEXEC)
485 mask |= S_IXUSR;
486 if (mode & VREAD)
487 mask |= S_IRUSR;
488 if (mode & VWRITE)
489 mask |= S_IWUSR;
490 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
491 }
492
493 /* Otherwise, check the groups. */
494 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
495 if (ip->i_mp->ntm_gid == *gp) {
496 if (mode & VEXEC)
497 mask |= S_IXGRP;
498 if (mode & VREAD)
499 mask |= S_IRGRP;
500 if (mode & VWRITE)
501 mask |= S_IWGRP;
502 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
503 }
504
505 /* Otherwise, check everyone else. */
506 if (mode & VEXEC)
507 mask |= S_IXOTH;
508 if (mode & VREAD)
509 mask |= S_IROTH;
510 if (mode & VWRITE)
511 mask |= S_IWOTH;
512 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
513}
514
515/*
516 * Open called.
517 *
518 * Nothing to do.
cd0a65a2
CP
519 *
520 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
521 * struct thread *a_td)
984263bc
MD
522 */
523/* ARGSUSED */
524static int
cd0a65a2 525ntfs_open(struct vop_open_args *ap)
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MD
526{
527#if NTFS_DEBUG
34ee9825
RG
528 struct vnode *vp = ap->a_vp;
529 struct ntnode *ip = VTONT(vp);
984263bc
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530
531 printf("ntfs_open: %d\n",ip->i_number);
532#endif
533
534 /*
535 * Files marked append-only must be opened for appending.
536 */
537
538 return (0);
539}
540
541/*
542 * Close called.
543 *
544 * Update the times on the inode.
cd0a65a2
CP
545 *
546 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred,
547 * struct thread *a_td)
984263bc
MD
548 */
549/* ARGSUSED */
550static int
cd0a65a2 551ntfs_close(struct vop_close_args *ap)
984263bc
MD
552{
553#if NTFS_DEBUG
34ee9825
RG
554 struct vnode *vp = ap->a_vp;
555 struct ntnode *ip = VTONT(vp);
984263bc
MD
556
557 printf("ntfs_close: %d\n",ip->i_number);
558#endif
559
560 return (0);
561}
562
cd0a65a2
CP
563/*
564 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
565 * int *a_ncookies, u_int **cookies)
566 */
984263bc 567int
cd0a65a2 568ntfs_readdir(struct vop_readdir_args *ap)
984263bc 569{
34ee9825
RG
570 struct vnode *vp = ap->a_vp;
571 struct fnode *fp = VTOF(vp);
572 struct ntnode *ip = FTONT(fp);
984263bc
MD
573 struct uio *uio = ap->a_uio;
574 struct ntfsmount *ntmp = ip->i_mp;
575 int i, error = 0;
576 u_int32_t faked = 0, num;
577 int ncookies = 0;
578 struct dirent cde;
579 off_t off;
580
581 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
582
583 off = uio->uio_offset;
584
585 /* Simulate . in every dir except ROOT */
586 if( ip->i_number != NTFS_ROOTINO ) {
587 struct dirent dot = { NTFS_ROOTINO,
588 sizeof(struct dirent), DT_DIR, 1, "." };
589
590 if( uio->uio_offset < sizeof(struct dirent) ) {
591 dot.d_fileno = ip->i_number;
592 error = uiomove((char *)&dot,sizeof(struct dirent),uio);
593 if(error)
594 return (error);
595
596 ncookies ++;
597 }
598 }
599
600 /* Simulate .. in every dir including ROOT */
601 if( uio->uio_offset < 2 * sizeof(struct dirent) ) {
602 struct dirent dotdot = { NTFS_ROOTINO,
603 sizeof(struct dirent), DT_DIR, 2, ".." };
604
605 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio);
606 if(error)
607 return (error);
608
609 ncookies ++;
610 }
611
612 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
613 num = uio->uio_offset / sizeof(struct dirent) - faked;
614
615 while( uio->uio_resid >= sizeof(struct dirent) ) {
616 struct attr_indexentry *iep;
617
618 error = ntfs_ntreaddir(ntmp, fp, num, &iep);
619
620 if(error)
621 return (error);
622
623 if( NULL == iep )
624 break;
625
626 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
627 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
628 {
629 if(!ntfs_isnamepermitted(ntmp,iep))
630 continue;
631
632 for(i=0; i<iep->ie_fnamelen; i++) {
633 cde.d_name[i] = NTFS_U28(iep->ie_fname[i]);
634 }
635 cde.d_name[i] = '\0';
636 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
637 num, cde.d_name, iep->ie_fnametype,
638 iep->ie_flag));
639 cde.d_namlen = iep->ie_fnamelen;
640 cde.d_fileno = iep->ie_number;
641 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
642 cde.d_reclen = sizeof(struct dirent);
643 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg"));
644
645 error = uiomove((char *)&cde, sizeof(struct dirent), uio);
646 if(error)
647 return (error);
648
649 ncookies++;
650 num++;
651 }
652 }
653
654 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
655 ncookies,(u_int)(uio->uio_offset - off)));
656 dprintf(("ntfs_readdir: off: %d resid: %d\n",
657 (u_int32_t)uio->uio_offset,uio->uio_resid));
658
659 if (!error && ap->a_ncookies != NULL) {
660 struct dirent* dpStart;
661 struct dirent* dp;
08c23b99 662#if defined(__DragonFly__)
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MD
663 u_long *cookies;
664 u_long *cookiep;
665#else /* defined(__NetBSD__) */
666 off_t *cookies;
667 off_t *cookiep;
668#endif
669
670 ddprintf(("ntfs_readdir: %d cookies\n",ncookies));
671 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
672 panic("ntfs_readdir: unexpected uio from NFS server");
673 dpStart = (struct dirent *)
674 ((caddr_t)uio->uio_iov->iov_base -
675 (uio->uio_offset - off));
08c23b99 676#if defined(__DragonFly__)
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677 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
678 M_TEMP, M_WAITOK);
679#else /* defined(__NetBSD__) */
680 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
681 M_TEMP, M_WAITOK);
682#endif
683 for (dp = dpStart, cookiep = cookies, i=0;
684 i < ncookies;
685 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
686 off += dp->d_reclen;
687 *cookiep++ = (u_int) off;
688 }
689 *ap->a_ncookies = ncookies;
690 *ap->a_cookies = cookies;
691 }
692/*
693 if (ap->a_eofflag)
694 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
695*/
696 return (error);
697}
698
cd0a65a2
CP
699/*
700 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
701 * struct componentname *a_cnp)
702 */
984263bc 703int
cd0a65a2 704ntfs_lookup(struct vop_lookup_args *ap)
984263bc 705{
34ee9825
RG
706 struct vnode *dvp = ap->a_dvp;
707 struct ntnode *dip = VTONT(dvp);
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MD
708 struct ntfsmount *ntmp = dip->i_mp;
709 struct componentname *cnp = ap->a_cnp;
710 struct ucred *cred = cnp->cn_cred;
711 int error;
2b69e610 712 int lockparent = cnp->cn_flags & CNP_LOCKPARENT;
984263bc 713#if NTFS_DEBUG
2b69e610 714 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
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MD
715#endif
716 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
717 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
718 dip->i_number, lockparent, wantparent));
719
fad57d0e 720 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
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MD
721 dprintf(("ntfs_lookup: faking . directory in %d\n",
722 dip->i_number));
723
597aea93 724 vref(dvp);
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MD
725 *ap->a_vpp = dvp;
726 error = 0;
2b69e610 727 } else if (cnp->cn_flags & CNP_ISDOTDOT) {
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MD
728 struct ntvattr *vap;
729
730 dprintf(("ntfs_lookup: faking .. directory in %d\n",
731 dip->i_number));
732
733 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
734 if(error)
735 return (error);
736
dadab5e9 737 VOP__UNLOCK(dvp,0,cnp->cn_td);
2b69e610 738 cnp->cn_flags |= CNP_PDIRUNLOCK;
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MD
739
740 dprintf(("ntfs_lookup: parentdir: %d\n",
741 vap->va_a_name->n_pnumber));
742 error = VFS_VGET(ntmp->ntm_mountp,
743 vap->va_a_name->n_pnumber,ap->a_vpp);
744 ntfs_ntvattrrele(vap);
745 if (error) {
dadab5e9 746 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_td)==0)
2b69e610 747 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
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MD
748 return (error);
749 }
750
fad57d0e 751 if (lockparent) {
dadab5e9 752 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_td);
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MD
753 if (error) {
754 vput( *(ap->a_vpp) );
755 return (error);
756 }
2b69e610 757 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
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MD
758 }
759 } else {
760 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
761 if (error) {
762 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
763 return (error);
764 }
765
766 dprintf(("ntfs_lookup: found ino: %d\n",
767 VTONT(*ap->a_vpp)->i_number));
768
fad57d0e 769 if (!lockparent)
dadab5e9 770 VOP__UNLOCK(dvp, 0, cnp->cn_td);
984263bc 771 }
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MD
772 return (error);
773}
774
08c23b99 775#if defined(__DragonFly__)
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MD
776/*
777 * Flush the blocks of a file to disk.
778 *
779 * This function is worthless for vnodes that represent directories. Maybe we
780 * could just do a sync if they try an fsync on a directory file.
cd0a65a2
CP
781 *
782 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
783 * struct thread *a_td)
984263bc
MD
784 */
785static int
cd0a65a2 786ntfs_fsync(struct vop_fsync_args *ap)
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MD
787{
788 return (0);
789}
790#endif
791
792/*
793 * Return POSIX pathconf information applicable to NTFS filesystem
794 */
795int
cd0a65a2 796ntfs_pathconf(void *v)
984263bc
MD
797{
798 struct vop_pathconf_args /* {
799 struct vnode *a_vp;
800 int a_name;
801 register_t *a_retval;
802 } */ *ap = v;
803
804 switch (ap->a_name) {
805 case _PC_LINK_MAX:
806 *ap->a_retval = 1;
807 return (0);
808 case _PC_NAME_MAX:
809 *ap->a_retval = NTFS_MAXFILENAME;
810 return (0);
811 case _PC_PATH_MAX:
812 *ap->a_retval = PATH_MAX;
813 return (0);
814 case _PC_CHOWN_RESTRICTED:
815 *ap->a_retval = 1;
816 return (0);
817 case _PC_NO_TRUNC:
818 *ap->a_retval = 0;
819 return (0);
820#if defined(__NetBSD__)
821 case _PC_SYNC_IO:
822 *ap->a_retval = 1;
823 return (0);
824 case _PC_FILESIZEBITS:
825 *ap->a_retval = 64;
826 return (0);
827#endif
828 default:
829 return (EINVAL);
830 }
831 /* NOTREACHED */
832}
833
834/*
835 * Global vfs data structures
836 */
984263bc 837struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
2d3e977e
MD
838 { &vop_default_desc, vop_defaultop },
839
840 { &vop_getattr_desc, (void *)ntfs_getattr },
841 { &vop_inactive_desc, (void *)ntfs_inactive },
842 { &vop_reclaim_desc, (void *)ntfs_reclaim },
843 { &vop_print_desc, (void *)ntfs_print },
844 { &vop_pathconf_desc, (void *)ntfs_pathconf },
845
846 { &vop_islocked_desc, (void *)vop_stdislocked },
847 { &vop_unlock_desc, (void *)vop_stdunlock },
848 { &vop_lock_desc, (void *)vop_stdlock },
fad57d0e 849 { &vop_lookup_desc, (void *)ntfs_lookup },
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MD
850
851 { &vop_access_desc, (void *)ntfs_access },
852 { &vop_close_desc, (void *)ntfs_close },
853 { &vop_open_desc, (void *)ntfs_open },
854 { &vop_readdir_desc, (void *)ntfs_readdir },
855 { &vop_fsync_desc, (void *)ntfs_fsync },
856
857 { &vop_bmap_desc, (void *)ntfs_bmap },
858 { &vop_getpages_desc, (void *)ntfs_getpages },
859 { &vop_putpages_desc, (void *)ntfs_putpages },
860 { &vop_strategy_desc, (void *)ntfs_strategy },
861 { &vop_bwrite_desc, (void *)vop_stdbwrite },
862 { &vop_read_desc, (void *)ntfs_read },
863 { &vop_write_desc, (void *)ntfs_write },
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MD
864
865 { NULL, NULL }
866};
867