Adjust some comments with reality.
[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 $
b478fdce 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.41 2007/08/08 00:12:52 swildner 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
66a1ddf5 104static int ntfs_pathconf (struct vop_pathconf_args *);
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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 204/*
31bd717a 205 * ntfs_bypass()
cd0a65a2 206 */
984263bc 207static int
cd0a65a2 208ntfs_bypass(struct vop_generic_args *ap)
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209{
210 int error = ENOTTY;
31bd717a 211 dprintf(("ntfs_bypass: %s\n", ap->a_desc->sd_name));
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212 return (error);
213}
214
215#endif
216
cd0a65a2 217/*
b478fdce 218 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap)
cd0a65a2 219 */
984263bc 220static int
cd0a65a2 221ntfs_getattr(struct vop_getattr_args *ap)
984263bc 222{
34ee9825
RG
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;
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MD
240 vap->va_rmajor = VNOVAL;
241 vap->va_rminor = VNOVAL;
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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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MD
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
3c37c940 271 if (ntfs_prtactive && vp->v_sysref.refcnt > 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
3c37c940 296 if (ntfs_prtactive && vp->v_sysref.refcnt > 1)
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MD
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)
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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
MD
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);
984263bc 332 struct ntfsmount *ntmp = ip->i_mp;
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MD
333 u_int32_t toread;
334 u_int32_t towrite;
335 size_t tmp;
984263bc
MD
336 int error;
337
54078292
MD
338 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n",
339 bp->b_loffset, bio->bio_offset));
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MD
340
341 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
342 (u_int32_t)bp->b_bcount,bp->b_flags));
343
10f3fee5 344 bp->b_error = 0;
984263bc 345
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MD
346 switch(bp->b_cmd) {
347 case BUF_CMD_READ:
54078292 348 if (bio->bio_offset >= fp->f_size) {
984263bc
MD
349 clrbuf(bp);
350 error = 0;
351 } else {
352 toread = min(bp->b_bcount,
54078292 353 fp->f_size - bio->bio_offset);
984263bc
MD
354 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
355 toread,(u_int32_t)fp->f_size));
356
357 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
54078292 358 fp->f_attrname, bio->bio_offset,
984263bc
MD
359 toread, bp->b_data, NULL);
360
361 if (error) {
086c1d7e 362 kprintf("ntfs_strategy: ntfs_readattr failed\n");
984263bc
MD
363 bp->b_error = error;
364 bp->b_flags |= B_ERROR;
365 }
366
367 bzero(bp->b_data + toread, bp->b_bcount - toread);
368 }
10f3fee5
MD
369 break;
370 case BUF_CMD_WRITE:
54078292 371 if (bio->bio_offset + bp->b_bcount >= fp->f_size) {
086c1d7e 372 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n");
984263bc
MD
373 bp->b_error = error = EFBIG;
374 bp->b_flags |= B_ERROR;
375 } else {
376 towrite = min(bp->b_bcount,
54078292 377 fp->f_size - bio->bio_offset);
984263bc
MD
378 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
379 towrite,(u_int32_t)fp->f_size));
380
381 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
54078292 382 fp->f_attrname, bio->bio_offset,towrite,
984263bc
MD
383 bp->b_data, &tmp, NULL);
384
385 if (error) {
086c1d7e 386 kprintf("ntfs_strategy: ntfs_writeattr fail\n");
984263bc
MD
387 bp->b_error = error;
388 bp->b_flags |= B_ERROR;
389 }
390 }
10f3fee5
MD
391 break;
392 default:
393 panic("ntfs: bad b_cmd %d\n", bp->b_cmd);
984263bc 394 }
81b5c339 395 biodone(bio);
984263bc
MD
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) {
086c1d7e 419 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
984263bc
MD
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)
086c1d7e 431 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error);
984263bc
MD
432#endif
433
434 return (error);
435}
436
cd0a65a2 437/*
b478fdce 438 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
cd0a65a2 439 */
984263bc 440int
cd0a65a2 441ntfs_access(struct vop_access_args *ap)
984263bc
MD
442{
443 struct vnode *vp = ap->a_vp;
444 struct ntnode *ip = VTONT(vp);
445 struct ucred *cred = ap->a_cred;
446 mode_t mask, mode = ap->a_mode;
34ee9825 447 gid_t *gp;
984263bc
MD
448 int i;
449#ifdef QUOTA
450 int error;
451#endif
452
453 dprintf(("ntfs_access: %d\n",ip->i_number));
454
455 /*
456 * Disallow write attempts on read-only file systems;
457 * unless the file is a socket, fifo, or a block or
458 * character device resident on the file system.
459 */
460 if (mode & VWRITE) {
461 switch ((int)vp->v_type) {
462 case VDIR:
463 case VLNK:
464 case VREG:
465 if (vp->v_mount->mnt_flag & MNT_RDONLY)
466 return (EROFS);
467#ifdef QUOTA
468 if (error = getinoquota(ip))
469 return (error);
470#endif
471 break;
472 }
473 }
474
475 /* Otherwise, user id 0 always gets access. */
476 if (cred->cr_uid == 0)
477 return (0);
478
479 mask = 0;
480
481 /* Otherwise, check the owner. */
482 if (cred->cr_uid == ip->i_mp->ntm_uid) {
483 if (mode & VEXEC)
484 mask |= S_IXUSR;
485 if (mode & VREAD)
486 mask |= S_IRUSR;
487 if (mode & VWRITE)
488 mask |= S_IWUSR;
489 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
490 }
491
492 /* Otherwise, check the groups. */
493 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
494 if (ip->i_mp->ntm_gid == *gp) {
495 if (mode & VEXEC)
496 mask |= S_IXGRP;
497 if (mode & VREAD)
498 mask |= S_IRGRP;
499 if (mode & VWRITE)
500 mask |= S_IWGRP;
501 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
502 }
503
504 /* Otherwise, check everyone else. */
505 if (mode & VEXEC)
506 mask |= S_IXOTH;
507 if (mode & VREAD)
508 mask |= S_IROTH;
509 if (mode & VWRITE)
510 mask |= S_IWOTH;
511 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
512}
513
514/*
515 * Open called.
516 *
517 * Nothing to do.
cd0a65a2
CP
518 *
519 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
b478fdce 520 * struct file *a_fp)
984263bc
MD
521 */
522/* ARGSUSED */
523static int
cd0a65a2 524ntfs_open(struct vop_open_args *ap)
984263bc 525{
8ddc6004 526 return (vop_stdopen(ap));
984263bc
MD
527}
528
529/*
530 * Close called.
531 *
532 * Update the times on the inode.
cd0a65a2 533 *
b478fdce 534 * ntfs_close(struct vnode *a_vp, int a_fflag)
984263bc
MD
535 */
536/* ARGSUSED */
537static int
cd0a65a2 538ntfs_close(struct vop_close_args *ap)
984263bc
MD
539{
540#if NTFS_DEBUG
34ee9825
RG
541 struct vnode *vp = ap->a_vp;
542 struct ntnode *ip = VTONT(vp);
984263bc 543
086c1d7e 544 kprintf("ntfs_close: %d\n",ip->i_number);
984263bc
MD
545#endif
546
8ddc6004 547 return (vop_stdclose(ap));
984263bc
MD
548}
549
cd0a65a2
CP
550/*
551 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
552 * int *a_ncookies, u_int **cookies)
553 */
984263bc 554int
cd0a65a2 555ntfs_readdir(struct vop_readdir_args *ap)
984263bc 556{
34ee9825
RG
557 struct vnode *vp = ap->a_vp;
558 struct fnode *fp = VTOF(vp);
559 struct ntnode *ip = FTONT(fp);
984263bc
MD
560 struct uio *uio = ap->a_uio;
561 struct ntfsmount *ntmp = ip->i_mp;
562 int i, error = 0;
7bf50a33 563 u_int32_t faked = 0, num, off;
984263bc 564 int ncookies = 0;
7bf50a33 565 char convname[NTFS_MAXFILENAME + 1];
984263bc
MD
566
567 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
568
7bf50a33
SS
569 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX)
570 return (EINVAL);
885ecb13
MD
571 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0)
572 return (error);
984263bc 573
7bf50a33
SS
574 /*
575 * uio->uio_offset carries the number of the entry
576 * where we should start returning dirents.
577 *
578 * We fake up "." if we're not reading the FS root
579 * and we always fake up "..".
580 *
581 * off contains the entry we are starting at,
582 * num increments while we are reading.
583 */
984263bc 584
7bf50a33
SS
585 off = num = uio->uio_offset;
586 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
984263bc 587
7bf50a33
SS
588 /* Simulate . in every dir except ROOT */
589 if (ip->i_number != NTFS_ROOTINO && num == 0) {
590 if (vop_write_dirent(&error, uio, ip->i_number,
591 DT_DIR, 1, "."))
885ecb13 592 goto done;
7bf50a33 593 if (error)
885ecb13 594 goto done;
7bf50a33
SS
595
596 num++;
597 ncookies++;
984263bc
MD
598 }
599
600 /* Simulate .. in every dir including ROOT */
7bf50a33
SS
601 if (num == faked - 1) {
602 /* XXX NTFS_ROOTINO seems to be wrong here */
603 if (vop_write_dirent(&error, uio, NTFS_ROOTINO,
604 DT_DIR, 2, ".."))
605 goto readdone;
885ecb13
MD
606 if (error)
607 goto done;
984263bc 608
7bf50a33
SS
609 num++;
610 ncookies++;
984263bc
MD
611 }
612
7bf50a33 613 for (;;) {
984263bc
MD
614 struct attr_indexentry *iep;
615
7bf50a33
SS
616 /*
617 * num is the number of the entry we will return,
618 * but ntfs_ntreaddir takes the entry number of the
619 * ntfs directory listing, so subtract the faked
620 * . and .. entries.
621 */
622 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep);
984263bc 623
885ecb13
MD
624 if (error)
625 goto done;
984263bc
MD
626
627 if( NULL == iep )
628 break;
629
7bf50a33 630 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST);
984263bc
MD
631 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
632 {
633 if(!ntfs_isnamepermitted(ntmp,iep))
634 continue;
635
7bf50a33
SS
636 for (i=0; i < iep->ie_fnamelen; i++)
637 convname[i] = NTFS_U28(iep->ie_fname[i]);
638 convname[i] = '\0';
639
640 if (vop_write_dirent(&error, uio, iep->ie_number,
641 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG,
642 iep->ie_fnamelen, convname))
643 goto readdone;
644
645 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, "
646 "flag: %d, %s\n",
647 ncookies, convname, iep->ie_fnametype,
648 iep->ie_flag,
649 (iep->ie_fflag & NTFS_FFLAG_DIR) ?
650 "dir" : "reg"));
651
885ecb13
MD
652 if (error)
653 goto done;
984263bc
MD
654
655 ncookies++;
656 num++;
657 }
658 }
659
7bf50a33
SS
660readdone:
661 uio->uio_offset = num;
662
984263bc
MD
663 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
664 ncookies,(u_int)(uio->uio_offset - off)));
665 dprintf(("ntfs_readdir: off: %d resid: %d\n",
666 (u_int32_t)uio->uio_offset,uio->uio_resid));
667
668 if (!error && ap->a_ncookies != NULL) {
08c23b99 669#if defined(__DragonFly__)
984263bc
MD
670 u_long *cookies;
671 u_long *cookiep;
672#else /* defined(__NetBSD__) */
673 off_t *cookies;
674 off_t *cookiep;
675#endif
676
677 ddprintf(("ntfs_readdir: %d cookies\n",ncookies));
678 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
679 panic("ntfs_readdir: unexpected uio from NFS server");
08c23b99 680#if defined(__DragonFly__)
984263bc
MD
681 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
682 M_TEMP, M_WAITOK);
683#else /* defined(__NetBSD__) */
684 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
685 M_TEMP, M_WAITOK);
686#endif
7bf50a33
SS
687 cookiep = cookies;
688 while (off < num)
689 *cookiep++ = ++off;
690
984263bc
MD
691 *ap->a_ncookies = ncookies;
692 *ap->a_cookies = cookies;
693 }
694/*
695 if (ap->a_eofflag)
885ecb13 696 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset;
984263bc 697*/
885ecb13
MD
698done:
699 vn_unlock(vp);
984263bc
MD
700 return (error);
701}
702
cd0a65a2
CP
703/*
704 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
705 * struct componentname *a_cnp)
706 */
984263bc 707int
e62afb5f 708ntfs_lookup(struct vop_old_lookup_args *ap)
984263bc 709{
34ee9825
RG
710 struct vnode *dvp = ap->a_dvp;
711 struct ntnode *dip = VTONT(dvp);
984263bc
MD
712 struct ntfsmount *ntmp = dip->i_mp;
713 struct componentname *cnp = ap->a_cnp;
984263bc 714 int error;
2b69e610 715 int lockparent = cnp->cn_flags & CNP_LOCKPARENT;
984263bc 716#if NTFS_DEBUG
2b69e610 717 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
984263bc
MD
718#endif
719 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
720 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
721 dip->i_number, lockparent, wantparent));
722
9df3a184
MD
723 *ap->a_vpp = NULL;
724
fad57d0e 725 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
984263bc
MD
726 dprintf(("ntfs_lookup: faking . directory in %d\n",
727 dip->i_number));
728
597aea93 729 vref(dvp);
984263bc
MD
730 *ap->a_vpp = dvp;
731 error = 0;
2b69e610 732 } else if (cnp->cn_flags & CNP_ISDOTDOT) {
984263bc
MD
733 struct ntvattr *vap;
734
735 dprintf(("ntfs_lookup: faking .. directory in %d\n",
736 dip->i_number));
737
738 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
739 if(error)
740 return (error);
741
acde96db 742 VOP__UNLOCK(dvp, 0);
2b69e610 743 cnp->cn_flags |= CNP_PDIRUNLOCK;
984263bc
MD
744
745 dprintf(("ntfs_lookup: parentdir: %d\n",
746 vap->va_a_name->n_pnumber));
747 error = VFS_VGET(ntmp->ntm_mountp,
748 vap->va_a_name->n_pnumber,ap->a_vpp);
749 ntfs_ntvattrrele(vap);
750 if (error) {
acde96db 751 if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0)
2b69e610 752 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
984263bc
MD
753 return (error);
754 }
755
fad57d0e 756 if (lockparent) {
acde96db 757 error = VN_LOCK(dvp, LK_EXCLUSIVE);
984263bc 758 if (error) {
9df3a184
MD
759 vput(*ap->a_vpp);
760 *ap->a_vpp = NULL;
984263bc
MD
761 return (error);
762 }
2b69e610 763 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
984263bc
MD
764 }
765 } else {
766 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
767 if (error) {
768 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
769 return (error);
770 }
771
772 dprintf(("ntfs_lookup: found ino: %d\n",
773 VTONT(*ap->a_vpp)->i_number));
774
fad57d0e 775 if (!lockparent)
acde96db 776 VOP__UNLOCK(dvp, 0);
984263bc 777 }
984263bc
MD
778 return (error);
779}
780
08c23b99 781#if defined(__DragonFly__)
984263bc
MD
782/*
783 * Flush the blocks of a file to disk.
784 *
785 * This function is worthless for vnodes that represent directories. Maybe we
786 * could just do a sync if they try an fsync on a directory file.
cd0a65a2 787 *
b478fdce 788 * ntfs_fsync(struct vnode *a_vp, int a_waitfor)
984263bc
MD
789 */
790static int
cd0a65a2 791ntfs_fsync(struct vop_fsync_args *ap)
984263bc
MD
792{
793 return (0);
794}
795#endif
796
797/*
798 * Return POSIX pathconf information applicable to NTFS filesystem
799 */
800int
66a1ddf5 801ntfs_pathconf(struct vop_pathconf_args *ap)
984263bc 802{
984263bc
MD
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 */
66a1ddf5
MD
836struct vop_ops ntfs_vnode_vops = {
837 .vop_default = vop_defaultop,
838 .vop_getattr = ntfs_getattr,
839 .vop_inactive = ntfs_inactive,
840 .vop_reclaim = ntfs_reclaim,
841 .vop_print = ntfs_print,
842 .vop_pathconf = ntfs_pathconf,
66a1ddf5
MD
843 .vop_old_lookup = ntfs_lookup,
844 .vop_access = ntfs_access,
845 .vop_close = ntfs_close,
846 .vop_open = ntfs_open,
847 .vop_readdir = ntfs_readdir,
848 .vop_fsync = ntfs_fsync,
849 .vop_bmap = ntfs_bmap,
850 .vop_getpages = ntfs_getpages,
851 .vop_putpages = ntfs_putpages,
852 .vop_strategy = ntfs_strategy,
853 .vop_read = ntfs_read,
854 .vop_write = ntfs_write
984263bc
MD
855};
856