Properly assert the state of the MP lock in the async syscall message
[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 $
e62afb5f 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.24 2005/09/14 01:13:40 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*/
1f2de5d4
MD
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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MD
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
CP
126 *
127 * ntfs_bmap(struct vnode *a_vp, daddr_t a_bn, struct vnode **a_vpp,
128 * daddr_t *a_bnp, int *a_runp, int *a_runb)
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MD
129 */
130int
cd0a65a2 131ntfs_bmap(struct vop_bmap_args *ap)
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MD
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;
136 if (ap->a_bnp != NULL)
137 *ap->a_bnp = ap->a_bn;
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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MD
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
3b568787 183 error = bread(vp, cn, ntfs_cntob(1), &bp);
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MD
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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MD
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)
984263bc
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);
984263bc
MD
267#endif
268
269 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
270
271 if (ntfs_prtactive && vp->v_usecount != 0)
272 vprint("ntfs_inactive: pushing active", vp);
273
5fd012e0
MD
274 /*
275 * XXX since we don't support any filesystem changes
984263bc
MD
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
296 if (ntfs_prtactive && vp->v_usecount != 0)
297 vprint("ntfs_reclaim: pushing active", vp);
298
299 if ((error = ntfs_ntget(ip)) != 0)
300 return (error);
301
984263bc
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
CP
321 *
322 * ntfs_strategy(struct buf *a_bp)
984263bc
MD
323 */
324int
cd0a65a2 325ntfs_strategy(struct vop_strategy_args *ap)
984263bc 326{
34ee9825
RG
327 struct buf *bp = ap->a_bp;
328 struct vnode *vp = bp->b_vp;
329 struct fnode *fp = VTOF(vp);
330 struct ntnode *ip = FTONT(fp);
984263bc
MD
331 struct ntfsmount *ntmp = ip->i_mp;
332 int error;
333
08c23b99 334#ifdef __DragonFly__
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MD
335 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
336 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
337 (u_int32_t)bp->b_lblkno));
338#else
339 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
340 (u_int32_t)bp->b_blkno,
341 (u_int32_t)bp->b_lblkno));
342#endif
343
344 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
345 (u_int32_t)bp->b_bcount,bp->b_flags));
346
347 if (bp->b_flags & B_READ) {
348 u_int32_t toread;
349
350 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
351 clrbuf(bp);
352 error = 0;
353 } else {
354 toread = min(bp->b_bcount,
355 fp->f_size-ntfs_cntob(bp->b_blkno));
356 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
357 toread,(u_int32_t)fp->f_size));
358
359 error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
360 fp->f_attrname, ntfs_cntob(bp->b_blkno),
361 toread, bp->b_data, NULL);
362
363 if (error) {
364 printf("ntfs_strategy: ntfs_readattr failed\n");
365 bp->b_error = error;
366 bp->b_flags |= B_ERROR;
367 }
368
369 bzero(bp->b_data + toread, bp->b_bcount - toread);
370 }
371 } else {
372 size_t tmp;
373 u_int32_t towrite;
374
375 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
376 printf("ntfs_strategy: CAN'T EXTEND FILE\n");
377 bp->b_error = error = EFBIG;
378 bp->b_flags |= B_ERROR;
379 } else {
380 towrite = min(bp->b_bcount,
381 fp->f_size-ntfs_cntob(bp->b_blkno));
382 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
383 towrite,(u_int32_t)fp->f_size));
384
385 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
386 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
387 bp->b_data, &tmp, NULL);
388
389 if (error) {
390 printf("ntfs_strategy: ntfs_writeattr fail\n");
391 bp->b_error = error;
392 bp->b_flags |= B_ERROR;
393 }
394 }
395 }
396 biodone(bp);
397 return (error);
398}
399
cd0a65a2
CP
400/*
401 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
402 * struct ucred *a_cred)
403 */
984263bc 404static int
cd0a65a2 405ntfs_write(struct vop_write_args *ap)
984263bc 406{
34ee9825
RG
407 struct vnode *vp = ap->a_vp;
408 struct fnode *fp = VTOF(vp);
409 struct ntnode *ip = FTONT(fp);
984263bc
MD
410 struct uio *uio = ap->a_uio;
411 struct ntfsmount *ntmp = ip->i_mp;
412 u_int64_t towrite;
413 size_t written;
414 int error;
415
416 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));
417 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
418
419 if (uio->uio_resid + uio->uio_offset > fp->f_size) {
420 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
421 return (EFBIG);
422 }
423
424 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
425
426 dprintf((", towrite: %d\n",(u_int32_t)towrite));
427
428 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
429 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
430#ifdef NTFS_DEBUG
431 if (error)
432 printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
433#endif
434
435 return (error);
436}
437
cd0a65a2
CP
438/*
439 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
440 * struct thread *a_td)
441 */
984263bc 442int
cd0a65a2 443ntfs_access(struct vop_access_args *ap)
984263bc
MD
444{
445 struct vnode *vp = ap->a_vp;
446 struct ntnode *ip = VTONT(vp);
447 struct ucred *cred = ap->a_cred;
448 mode_t mask, mode = ap->a_mode;
34ee9825 449 gid_t *gp;
984263bc
MD
450 int i;
451#ifdef QUOTA
452 int error;
453#endif
454
455 dprintf(("ntfs_access: %d\n",ip->i_number));
456
457 /*
458 * Disallow write attempts on read-only file systems;
459 * unless the file is a socket, fifo, or a block or
460 * character device resident on the file system.
461 */
462 if (mode & VWRITE) {
463 switch ((int)vp->v_type) {
464 case VDIR:
465 case VLNK:
466 case VREG:
467 if (vp->v_mount->mnt_flag & MNT_RDONLY)
468 return (EROFS);
469#ifdef QUOTA
470 if (error = getinoquota(ip))
471 return (error);
472#endif
473 break;
474 }
475 }
476
477 /* Otherwise, user id 0 always gets access. */
478 if (cred->cr_uid == 0)
479 return (0);
480
481 mask = 0;
482
483 /* Otherwise, check the owner. */
484 if (cred->cr_uid == ip->i_mp->ntm_uid) {
485 if (mode & VEXEC)
486 mask |= S_IXUSR;
487 if (mode & VREAD)
488 mask |= S_IRUSR;
489 if (mode & VWRITE)
490 mask |= S_IWUSR;
491 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
492 }
493
494 /* Otherwise, check the groups. */
495 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
496 if (ip->i_mp->ntm_gid == *gp) {
497 if (mode & VEXEC)
498 mask |= S_IXGRP;
499 if (mode & VREAD)
500 mask |= S_IRGRP;
501 if (mode & VWRITE)
502 mask |= S_IWGRP;
503 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
504 }
505
506 /* Otherwise, check everyone else. */
507 if (mode & VEXEC)
508 mask |= S_IXOTH;
509 if (mode & VREAD)
510 mask |= S_IROTH;
511 if (mode & VWRITE)
512 mask |= S_IWOTH;
513 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
514}
515
516/*
517 * Open called.
518 *
519 * Nothing to do.
cd0a65a2
CP
520 *
521 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
522 * struct thread *a_td)
984263bc
MD
523 */
524/* ARGSUSED */
525static int
cd0a65a2 526ntfs_open(struct vop_open_args *ap)
984263bc
MD
527{
528#if NTFS_DEBUG
34ee9825
RG
529 struct vnode *vp = ap->a_vp;
530 struct ntnode *ip = VTONT(vp);
984263bc
MD
531
532 printf("ntfs_open: %d\n",ip->i_number);
533#endif
534
535 /*
536 * Files marked append-only must be opened for appending.
537 */
538
539 return (0);
540}
541
542/*
543 * Close called.
544 *
545 * Update the times on the inode.
cd0a65a2
CP
546 *
547 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred,
548 * struct thread *a_td)
984263bc
MD
549 */
550/* ARGSUSED */
551static int
cd0a65a2 552ntfs_close(struct vop_close_args *ap)
984263bc
MD
553{
554#if NTFS_DEBUG
34ee9825
RG
555 struct vnode *vp = ap->a_vp;
556 struct ntnode *ip = VTONT(vp);
984263bc
MD
557
558 printf("ntfs_close: %d\n",ip->i_number);
559#endif
560
561 return (0);
562}
563
cd0a65a2
CP
564/*
565 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
566 * int *a_ncookies, u_int **cookies)
567 */
984263bc 568int
cd0a65a2 569ntfs_readdir(struct vop_readdir_args *ap)
984263bc 570{
34ee9825
RG
571 struct vnode *vp = ap->a_vp;
572 struct fnode *fp = VTOF(vp);
573 struct ntnode *ip = FTONT(fp);
984263bc
MD
574 struct uio *uio = ap->a_uio;
575 struct ntfsmount *ntmp = ip->i_mp;
576 int i, error = 0;
7bf50a33 577 u_int32_t faked = 0, num, off;
984263bc 578 int ncookies = 0;
7bf50a33 579 char convname[NTFS_MAXFILENAME + 1];
984263bc
MD
580
581 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
582
7bf50a33
SS
583 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX)
584 return (EINVAL);
984263bc 585
7bf50a33
SS
586 /*
587 * uio->uio_offset carries the number of the entry
588 * where we should start returning dirents.
589 *
590 * We fake up "." if we're not reading the FS root
591 * and we always fake up "..".
592 *
593 * off contains the entry we are starting at,
594 * num increments while we are reading.
595 */
984263bc 596
7bf50a33
SS
597 off = num = uio->uio_offset;
598 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
984263bc 599
7bf50a33
SS
600 /* Simulate . in every dir except ROOT */
601 if (ip->i_number != NTFS_ROOTINO && num == 0) {
602 if (vop_write_dirent(&error, uio, ip->i_number,
603 DT_DIR, 1, "."))
604 return (0);
605 if (error)
606 return (error);
607
608 num++;
609 ncookies++;
984263bc
MD
610 }
611
612 /* Simulate .. in every dir including ROOT */
7bf50a33
SS
613 if (num == faked - 1) {
614 /* XXX NTFS_ROOTINO seems to be wrong here */
615 if (vop_write_dirent(&error, uio, NTFS_ROOTINO,
616 DT_DIR, 2, ".."))
617 goto readdone;
984263bc
MD
618 if(error)
619 return (error);
620
7bf50a33
SS
621 num++;
622 ncookies++;
984263bc
MD
623 }
624
7bf50a33 625 for (;;) {
984263bc
MD
626 struct attr_indexentry *iep;
627
7bf50a33
SS
628 /*
629 * num is the number of the entry we will return,
630 * but ntfs_ntreaddir takes the entry number of the
631 * ntfs directory listing, so subtract the faked
632 * . and .. entries.
633 */
634 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep);
984263bc
MD
635
636 if(error)
637 return (error);
638
639 if( NULL == iep )
640 break;
641
7bf50a33 642 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST);
984263bc
MD
643 iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
644 {
645 if(!ntfs_isnamepermitted(ntmp,iep))
646 continue;
647
7bf50a33
SS
648 for (i=0; i < iep->ie_fnamelen; i++)
649 convname[i] = NTFS_U28(iep->ie_fname[i]);
650 convname[i] = '\0';
651
652 if (vop_write_dirent(&error, uio, iep->ie_number,
653 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG,
654 iep->ie_fnamelen, convname))
655 goto readdone;
656
657 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, "
658 "flag: %d, %s\n",
659 ncookies, convname, iep->ie_fnametype,
660 iep->ie_flag,
661 (iep->ie_fflag & NTFS_FFLAG_DIR) ?
662 "dir" : "reg"));
663
984263bc
MD
664 if(error)
665 return (error);
666
667 ncookies++;
668 num++;
669 }
670 }
671
7bf50a33
SS
672readdone:
673 uio->uio_offset = num;
674
984263bc
MD
675 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
676 ncookies,(u_int)(uio->uio_offset - off)));
677 dprintf(("ntfs_readdir: off: %d resid: %d\n",
678 (u_int32_t)uio->uio_offset,uio->uio_resid));
679
680 if (!error && ap->a_ncookies != NULL) {
08c23b99 681#if defined(__DragonFly__)
984263bc
MD
682 u_long *cookies;
683 u_long *cookiep;
684#else /* defined(__NetBSD__) */
685 off_t *cookies;
686 off_t *cookiep;
687#endif
688
689 ddprintf(("ntfs_readdir: %d cookies\n",ncookies));
690 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
691 panic("ntfs_readdir: unexpected uio from NFS server");
08c23b99 692#if defined(__DragonFly__)
984263bc
MD
693 MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
694 M_TEMP, M_WAITOK);
695#else /* defined(__NetBSD__) */
696 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
697 M_TEMP, M_WAITOK);
698#endif
7bf50a33
SS
699 cookiep = cookies;
700 while (off < num)
701 *cookiep++ = ++off;
702
984263bc
MD
703 *ap->a_ncookies = ncookies;
704 *ap->a_cookies = cookies;
705 }
706/*
707 if (ap->a_eofflag)
708 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
709*/
710 return (error);
711}
712
cd0a65a2
CP
713/*
714 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
715 * struct componentname *a_cnp)
716 */
984263bc 717int
e62afb5f 718ntfs_lookup(struct vop_old_lookup_args *ap)
984263bc 719{
34ee9825
RG
720 struct vnode *dvp = ap->a_dvp;
721 struct ntnode *dip = VTONT(dvp);
984263bc
MD
722 struct ntfsmount *ntmp = dip->i_mp;
723 struct componentname *cnp = ap->a_cnp;
984263bc 724 int error;
2b69e610 725 int lockparent = cnp->cn_flags & CNP_LOCKPARENT;
984263bc 726#if NTFS_DEBUG
2b69e610 727 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
984263bc
MD
728#endif
729 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
730 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
731 dip->i_number, lockparent, wantparent));
732
9df3a184
MD
733 *ap->a_vpp = NULL;
734
fad57d0e 735 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
984263bc
MD
736 dprintf(("ntfs_lookup: faking . directory in %d\n",
737 dip->i_number));
738
597aea93 739 vref(dvp);
984263bc
MD
740 *ap->a_vpp = dvp;
741 error = 0;
2b69e610 742 } else if (cnp->cn_flags & CNP_ISDOTDOT) {
984263bc
MD
743 struct ntvattr *vap;
744
745 dprintf(("ntfs_lookup: faking .. directory in %d\n",
746 dip->i_number));
747
748 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
749 if(error)
750 return (error);
751
dadab5e9 752 VOP__UNLOCK(dvp,0,cnp->cn_td);
2b69e610 753 cnp->cn_flags |= CNP_PDIRUNLOCK;
984263bc
MD
754
755 dprintf(("ntfs_lookup: parentdir: %d\n",
756 vap->va_a_name->n_pnumber));
757 error = VFS_VGET(ntmp->ntm_mountp,
758 vap->va_a_name->n_pnumber,ap->a_vpp);
759 ntfs_ntvattrrele(vap);
760 if (error) {
dadab5e9 761 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_td)==0)
2b69e610 762 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
984263bc
MD
763 return (error);
764 }
765
fad57d0e 766 if (lockparent) {
dadab5e9 767 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_td);
984263bc 768 if (error) {
9df3a184
MD
769 vput(*ap->a_vpp);
770 *ap->a_vpp = NULL;
984263bc
MD
771 return (error);
772 }
2b69e610 773 cnp->cn_flags &= ~CNP_PDIRUNLOCK;
984263bc
MD
774 }
775 } else {
776 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
777 if (error) {
778 dprintf(("ntfs_ntlookupfile: returned %d\n", error));
779 return (error);
780 }
781
782 dprintf(("ntfs_lookup: found ino: %d\n",
783 VTONT(*ap->a_vpp)->i_number));
784
fad57d0e 785 if (!lockparent)
dadab5e9 786 VOP__UNLOCK(dvp, 0, cnp->cn_td);
984263bc 787 }
984263bc
MD
788 return (error);
789}
790
08c23b99 791#if defined(__DragonFly__)
984263bc
MD
792/*
793 * Flush the blocks of a file to disk.
794 *
795 * This function is worthless for vnodes that represent directories. Maybe we
796 * could just do a sync if they try an fsync on a directory file.
cd0a65a2
CP
797 *
798 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
799 * struct thread *a_td)
984263bc
MD
800 */
801static int
cd0a65a2 802ntfs_fsync(struct vop_fsync_args *ap)
984263bc
MD
803{
804 return (0);
805}
806#endif
807
808/*
809 * Return POSIX pathconf information applicable to NTFS filesystem
810 */
811int
cd0a65a2 812ntfs_pathconf(void *v)
984263bc
MD
813{
814 struct vop_pathconf_args /* {
815 struct vnode *a_vp;
816 int a_name;
817 register_t *a_retval;
818 } */ *ap = v;
819
820 switch (ap->a_name) {
821 case _PC_LINK_MAX:
822 *ap->a_retval = 1;
823 return (0);
824 case _PC_NAME_MAX:
825 *ap->a_retval = NTFS_MAXFILENAME;
826 return (0);
827 case _PC_PATH_MAX:
828 *ap->a_retval = PATH_MAX;
829 return (0);
830 case _PC_CHOWN_RESTRICTED:
831 *ap->a_retval = 1;
832 return (0);
833 case _PC_NO_TRUNC:
834 *ap->a_retval = 0;
835 return (0);
836#if defined(__NetBSD__)
837 case _PC_SYNC_IO:
838 *ap->a_retval = 1;
839 return (0);
840 case _PC_FILESIZEBITS:
841 *ap->a_retval = 64;
842 return (0);
843#endif
844 default:
845 return (EINVAL);
846 }
847 /* NOTREACHED */
848}
849
850/*
851 * Global vfs data structures
852 */
984263bc 853struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
2d3e977e
MD
854 { &vop_default_desc, vop_defaultop },
855
625ddaba
JS
856 { &vop_getattr_desc, (vnodeopv_entry_t)ntfs_getattr },
857 { &vop_inactive_desc, (vnodeopv_entry_t)ntfs_inactive },
858 { &vop_reclaim_desc, (vnodeopv_entry_t)ntfs_reclaim },
859 { &vop_print_desc, (vnodeopv_entry_t)ntfs_print },
860 { &vop_pathconf_desc, (vnodeopv_entry_t)ntfs_pathconf },
861
862 { &vop_islocked_desc, (vnodeopv_entry_t)vop_stdislocked },
863 { &vop_unlock_desc, (vnodeopv_entry_t)vop_stdunlock },
864 { &vop_lock_desc, (vnodeopv_entry_t)vop_stdlock },
e62afb5f 865 { &vop_old_lookup_desc, (vnodeopv_entry_t)ntfs_lookup },
625ddaba
JS
866
867 { &vop_access_desc, (vnodeopv_entry_t)ntfs_access },
868 { &vop_close_desc, (vnodeopv_entry_t)ntfs_close },
869 { &vop_open_desc, (vnodeopv_entry_t)ntfs_open },
870 { &vop_readdir_desc, (vnodeopv_entry_t)ntfs_readdir },
871 { &vop_fsync_desc, (vnodeopv_entry_t)ntfs_fsync },
872
873 { &vop_bmap_desc, (vnodeopv_entry_t)ntfs_bmap },
874 { &vop_getpages_desc, (vnodeopv_entry_t)ntfs_getpages },
875 { &vop_putpages_desc, (vnodeopv_entry_t)ntfs_putpages },
876 { &vop_strategy_desc, (vnodeopv_entry_t)ntfs_strategy },
877 { &vop_bwrite_desc, (vnodeopv_entry_t)vop_stdbwrite },
878 { &vop_read_desc, (vnodeopv_entry_t)ntfs_read },
879 { &vop_write_desc, (vnodeopv_entry_t)ntfs_write },
984263bc
MD
880
881 { NULL, NULL }
882};
883