1 | /* $NetBSD: ntfs_vnops.c,v 1.60 2016/08/20 12:37:07 hannken 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. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp |
35 | * |
36 | */ |
37 | |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.60 2016/08/20 12:37:07 hannken Exp $" ); |
40 | |
41 | #include <sys/param.h> |
42 | #include <sys/systm.h> |
43 | #include <sys/kernel.h> |
44 | #include <sys/time.h> |
45 | #include <sys/stat.h> |
46 | #include <sys/vnode.h> |
47 | #include <sys/mount.h> |
48 | #include <sys/namei.h> |
49 | #include <sys/malloc.h> |
50 | #include <sys/buf.h> |
51 | #include <sys/dirent.h> |
52 | #include <sys/kauth.h> |
53 | #include <sys/sysctl.h> |
54 | |
55 | |
56 | #include <fs/ntfs/ntfs.h> |
57 | #include <fs/ntfs/ntfs_inode.h> |
58 | #include <fs/ntfs/ntfs_subr.h> |
59 | #include <fs/ntfs/ntfs_vfsops.h> |
60 | #include <miscfs/specfs/specdev.h> |
61 | #include <miscfs/genfs/genfs.h> |
62 | |
63 | #include <sys/unistd.h> /* for pathconf(2) constants */ |
64 | |
65 | static int ntfs_bypass(void *); |
66 | static int ntfs_read(void *); |
67 | static int ntfs_write(void *); |
68 | static int ntfs_getattr(void *); |
69 | static int ntfs_inactive(void *); |
70 | static int ntfs_print(void *); |
71 | static int ntfs_reclaim(void *); |
72 | static int ntfs_strategy(void *); |
73 | static int ntfs_access(void *); |
74 | static int ntfs_open(void *); |
75 | static int ntfs_close(void *); |
76 | static int ntfs_readdir(void *); |
77 | static int ntfs_lookup(void *); |
78 | static int ntfs_bmap(void *); |
79 | static int ntfs_fsync(void *); |
80 | static int ntfs_pathconf(void *); |
81 | |
82 | extern int prtactive; |
83 | |
84 | /* |
85 | * This is a noop, simply returning what one has been given. |
86 | */ |
87 | int |
88 | ntfs_bmap(void *v) |
89 | { |
90 | struct vop_bmap_args /* { |
91 | struct vnode *a_vp; |
92 | daddr_t a_bn; |
93 | struct vnode **a_vpp; |
94 | daddr_t *a_bnp; |
95 | int *a_runp; |
96 | int *a_runb; |
97 | } */ *ap = v; |
98 | dprintf(("ntfs_bmap: vn: %p, blk: %d\n" , ap->a_vp,(u_int32_t)ap->a_bn)); |
99 | if (ap->a_vpp != NULL) |
100 | *ap->a_vpp = ap->a_vp; |
101 | if (ap->a_bnp != NULL) |
102 | *ap->a_bnp = ap->a_bn; |
103 | if (ap->a_runp != NULL) |
104 | *ap->a_runp = 0; |
105 | return (0); |
106 | } |
107 | |
108 | static int |
109 | ntfs_read(void *v) |
110 | { |
111 | struct vop_read_args /* { |
112 | struct vnode *a_vp; |
113 | struct uio *a_uio; |
114 | int a_ioflag; |
115 | kauth_cred_t a_cred; |
116 | } */ *ap = v; |
117 | struct vnode *vp = ap->a_vp; |
118 | struct fnode *fp = VTOF(vp); |
119 | struct ntnode *ip = FTONT(fp); |
120 | struct uio *uio = ap->a_uio; |
121 | struct ntfsmount *ntmp = ip->i_mp; |
122 | u_int64_t toread; |
123 | int error; |
124 | |
125 | dprintf(("ntfs_read: ino: %llu, off: %qd resid: %qd\n" , |
126 | (unsigned long long)ip->i_number, (long long)uio->uio_offset, |
127 | (long long)uio->uio_resid)); |
128 | |
129 | dprintf(("ntfs_read: filesize: %qu" ,(long long)fp->f_size)); |
130 | |
131 | /* don't allow reading after end of file */ |
132 | if (uio->uio_offset > fp->f_size) |
133 | toread = 0; |
134 | else |
135 | toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset ); |
136 | |
137 | dprintf((", toread: %qu\n" ,(long long)toread)); |
138 | |
139 | if (toread == 0) |
140 | return (0); |
141 | |
142 | error = ntfs_readattr(ntmp, ip, fp->f_attrtype, |
143 | fp->f_attrname, uio->uio_offset, toread, NULL, uio); |
144 | if (error) { |
145 | printf("ntfs_read: ntfs_readattr failed: %d\n" ,error); |
146 | return (error); |
147 | } |
148 | |
149 | return (0); |
150 | } |
151 | |
152 | static int |
153 | ntfs_bypass(void *v) |
154 | { |
155 | struct vop_generic_args /* { |
156 | struct vnodeop_desc *a_desc; |
157 | <other random data follows, presumably> |
158 | } */ *ap __unused = v; |
159 | int error = ENOTTY; |
160 | dprintf(("ntfs_bypass: %s\n" , ap->a_desc->vdesc_name)); |
161 | return (error); |
162 | } |
163 | |
164 | |
165 | static int |
166 | ntfs_getattr(void *v) |
167 | { |
168 | struct vop_getattr_args /* { |
169 | struct vnode *a_vp; |
170 | struct vattr *a_vap; |
171 | kauth_cred_t a_cred; |
172 | } */ *ap = v; |
173 | struct vnode *vp = ap->a_vp; |
174 | struct fnode *fp = VTOF(vp); |
175 | struct ntnode *ip = FTONT(fp); |
176 | struct vattr *vap = ap->a_vap; |
177 | |
178 | dprintf(("ntfs_getattr: %llu, flags: %d\n" , |
179 | (unsigned long long)ip->i_number, ip->i_flag)); |
180 | |
181 | vap->va_fsid = ip->i_dev; |
182 | vap->va_fileid = ip->i_number; |
183 | vap->va_mode = ip->i_mp->ntm_mode; |
184 | vap->va_nlink = ip->i_nlink; |
185 | vap->va_uid = ip->i_mp->ntm_uid; |
186 | vap->va_gid = ip->i_mp->ntm_gid; |
187 | vap->va_rdev = 0; /* XXX UNODEV ? */ |
188 | vap->va_size = fp->f_size; |
189 | vap->va_bytes = fp->f_allocated; |
190 | vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); |
191 | vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); |
192 | vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); |
193 | vap->va_flags = ip->i_flag; |
194 | vap->va_gen = 0; |
195 | vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; |
196 | vap->va_type = vp->v_type; |
197 | vap->va_filerev = 0; |
198 | return (0); |
199 | } |
200 | |
201 | |
202 | /* |
203 | * Last reference to an ntnode. If necessary, write or delete it. |
204 | */ |
205 | int |
206 | ntfs_inactive(void *v) |
207 | { |
208 | struct vop_inactive_args /* { |
209 | struct vnode *a_vp; |
210 | } */ *ap = v; |
211 | struct vnode *vp = ap->a_vp; |
212 | #ifdef NTFS_DEBUG |
213 | struct ntnode *ip = VTONT(vp); |
214 | #endif |
215 | |
216 | dprintf(("ntfs_inactive: vnode: %p, ntnode: %llu\n" , vp, |
217 | (unsigned long long)ip->i_number)); |
218 | |
219 | VOP_UNLOCK(vp); |
220 | |
221 | /* XXX since we don't support any filesystem changes |
222 | * right now, nothing more needs to be done |
223 | */ |
224 | return (0); |
225 | } |
226 | |
227 | /* |
228 | * Reclaim an fnode/ntnode so that it can be used for other purposes. |
229 | */ |
230 | int |
231 | ntfs_reclaim(void *v) |
232 | { |
233 | struct vop_reclaim_args /* { |
234 | struct vnode *a_vp; |
235 | } */ *ap = v; |
236 | struct vnode *vp = ap->a_vp; |
237 | struct fnode *fp = VTOF(vp); |
238 | struct ntnode *ip = FTONT(fp); |
239 | const int attrlen = strlen(fp->f_attrname); |
240 | int error; |
241 | |
242 | dprintf(("ntfs_reclaim: vnode: %p, ntnode: %llu\n" , vp, |
243 | (unsigned long long)ip->i_number)); |
244 | |
245 | if (prtactive && vp->v_usecount > 1) |
246 | vprint("ntfs_reclaim: pushing active" , vp); |
247 | |
248 | if ((error = ntfs_ntget(ip)) != 0) |
249 | return (error); |
250 | |
251 | if (ip->i_devvp) { |
252 | vrele(ip->i_devvp); |
253 | ip->i_devvp = NULL; |
254 | } |
255 | genfs_node_destroy(vp); |
256 | vp->v_data = NULL; |
257 | |
258 | /* Destroy fnode. */ |
259 | if (fp->f_key != &fp->f_smallkey) |
260 | kmem_free(fp->f_key, NTKEY_SIZE(attrlen)); |
261 | if (fp->f_dirblbuf) |
262 | free(fp->f_dirblbuf, M_NTFSDIR); |
263 | kmem_free(fp, sizeof(*fp)); |
264 | ntfs_ntrele(ip); |
265 | |
266 | ntfs_ntput(ip); |
267 | |
268 | return (0); |
269 | } |
270 | |
271 | static int |
272 | ntfs_print(void *v) |
273 | { |
274 | struct vop_print_args /* { |
275 | struct vnode *a_vp; |
276 | } */ *ap = v; |
277 | struct ntnode *ip = VTONT(ap->a_vp); |
278 | |
279 | printf("tag VT_NTFS, ino %llu, flag %#x, usecount %d, nlink %ld\n" , |
280 | (unsigned long long)ip->i_number, ip->i_flag, ip->i_usecount, |
281 | ip->i_nlink); |
282 | printf(" " ); |
283 | printf("\n" ); |
284 | return (0); |
285 | } |
286 | |
287 | /* |
288 | * Calculate the logical to physical mapping if not done already, |
289 | * then call the device strategy routine. |
290 | */ |
291 | int |
292 | ntfs_strategy(void *v) |
293 | { |
294 | struct vop_strategy_args /* { |
295 | struct vnode *a_vp; |
296 | struct buf *a_bp; |
297 | } */ *ap = v; |
298 | struct buf *bp = ap->a_bp; |
299 | struct vnode *vp = ap->a_vp; |
300 | struct fnode *fp = VTOF(vp); |
301 | struct ntnode *ip = FTONT(fp); |
302 | struct ntfsmount *ntmp = ip->i_mp; |
303 | int error; |
304 | |
305 | dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n" , |
306 | (u_int32_t)bp->b_blkno, |
307 | (u_int32_t)bp->b_lblkno)); |
308 | |
309 | dprintf(("strategy: bcount: %u flags: 0x%x\n" , |
310 | (u_int32_t)bp->b_bcount,bp->b_flags)); |
311 | |
312 | if (bp->b_flags & B_READ) { |
313 | u_int32_t toread; |
314 | |
315 | if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { |
316 | clrbuf(bp); |
317 | error = 0; |
318 | } else { |
319 | toread = MIN(bp->b_bcount, |
320 | fp->f_size - ntfs_cntob(bp->b_blkno)); |
321 | dprintf(("ntfs_strategy: toread: %d, fsize: %d\n" , |
322 | toread,(u_int32_t)fp->f_size)); |
323 | |
324 | error = ntfs_readattr(ntmp, ip, fp->f_attrtype, |
325 | fp->f_attrname, ntfs_cntob(bp->b_blkno), |
326 | toread, bp->b_data, NULL); |
327 | |
328 | if (error) { |
329 | printf("ntfs_strategy: ntfs_readattr failed\n" ); |
330 | bp->b_error = error; |
331 | } |
332 | |
333 | memset((char *)bp->b_data + toread, 0, |
334 | bp->b_bcount - toread); |
335 | } |
336 | } else { |
337 | size_t tmp; |
338 | u_int32_t towrite; |
339 | |
340 | if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { |
341 | printf("ntfs_strategy: CAN'T EXTEND FILE\n" ); |
342 | bp->b_error = error = EFBIG; |
343 | } else { |
344 | towrite = MIN(bp->b_bcount, |
345 | fp->f_size - ntfs_cntob(bp->b_blkno)); |
346 | dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n" , |
347 | towrite,(u_int32_t)fp->f_size)); |
348 | |
349 | error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, |
350 | fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, |
351 | bp->b_data, &tmp, NULL); |
352 | |
353 | if (error) { |
354 | printf("ntfs_strategy: ntfs_writeattr fail\n" ); |
355 | bp->b_error = error; |
356 | } |
357 | } |
358 | } |
359 | biodone(bp); |
360 | return (error); |
361 | } |
362 | |
363 | static int |
364 | ntfs_write(void *v) |
365 | { |
366 | struct vop_write_args /* { |
367 | struct vnode *a_vp; |
368 | struct uio *a_uio; |
369 | int a_ioflag; |
370 | kauth_cred_t a_cred; |
371 | } */ *ap = v; |
372 | struct vnode *vp = ap->a_vp; |
373 | struct fnode *fp = VTOF(vp); |
374 | struct ntnode *ip = FTONT(fp); |
375 | struct uio *uio = ap->a_uio; |
376 | struct ntfsmount *ntmp = ip->i_mp; |
377 | u_int64_t towrite; |
378 | size_t written; |
379 | int error; |
380 | |
381 | dprintf(("ntfs_write: ino: %llu, off: %qd resid: %qd\n" , |
382 | (unsigned long long)ip->i_number, (long long)uio->uio_offset, |
383 | (long long)uio->uio_resid)); |
384 | dprintf(("ntfs_write: filesize: %qu" ,(long long)fp->f_size)); |
385 | |
386 | if (uio->uio_resid + uio->uio_offset > fp->f_size) { |
387 | printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n" ); |
388 | return (EFBIG); |
389 | } |
390 | |
391 | towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); |
392 | |
393 | dprintf((", towrite: %qu\n" ,(long long)towrite)); |
394 | |
395 | error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, |
396 | fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); |
397 | #ifdef NTFS_DEBUG |
398 | if (error) |
399 | printf("ntfs_write: ntfs_writeattr failed: %d\n" , error); |
400 | #endif |
401 | |
402 | return (error); |
403 | } |
404 | |
405 | static int |
406 | ntfs_check_possible(struct vnode *vp, struct ntnode *ip, mode_t mode) |
407 | { |
408 | |
409 | /* |
410 | * Disallow write attempts on read-only file systems; |
411 | * unless the file is a socket, fifo, or a block or |
412 | * character device resident on the file system. |
413 | */ |
414 | if (mode & VWRITE) { |
415 | switch ((int)vp->v_type) { |
416 | case VDIR: |
417 | case VLNK: |
418 | case VREG: |
419 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
420 | return (EROFS); |
421 | break; |
422 | } |
423 | } |
424 | |
425 | return 0; |
426 | } |
427 | |
428 | static int |
429 | ntfs_check_permitted(struct vnode *vp, struct ntnode *ip, mode_t mode, |
430 | kauth_cred_t cred) |
431 | { |
432 | mode_t file_mode; |
433 | |
434 | file_mode = ip->i_mp->ntm_mode | (S_IXUSR|S_IXGRP|S_IXOTH); |
435 | |
436 | return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, vp->v_type, |
437 | file_mode), vp, NULL, genfs_can_access(vp->v_type, file_mode, |
438 | ip->i_mp->ntm_uid, ip->i_mp->ntm_gid, mode, cred)); |
439 | } |
440 | |
441 | int |
442 | ntfs_access(void *v) |
443 | { |
444 | struct vop_access_args /* { |
445 | struct vnode *a_vp; |
446 | int a_mode; |
447 | kauth_cred_t a_cred; |
448 | } */ *ap = v; |
449 | struct vnode *vp = ap->a_vp; |
450 | struct ntnode *ip = VTONT(vp); |
451 | int error; |
452 | |
453 | dprintf(("ntfs_access: %llu\n" , (unsigned long long)ip->i_number)); |
454 | |
455 | error = ntfs_check_possible(vp, ip, ap->a_mode); |
456 | if (error) |
457 | return error; |
458 | |
459 | error = ntfs_check_permitted(vp, ip, ap->a_mode, ap->a_cred); |
460 | |
461 | return error; |
462 | } |
463 | |
464 | /* |
465 | * Open called. |
466 | * |
467 | * Nothing to do. |
468 | */ |
469 | /* ARGSUSED */ |
470 | static int |
471 | ntfs_open(void *v) |
472 | { |
473 | struct vop_open_args /* { |
474 | struct vnode *a_vp; |
475 | int a_mode; |
476 | kauth_cred_t a_cred; |
477 | } */ *ap __unused = v; |
478 | #ifdef NTFS_DEBUG |
479 | struct vnode *vp = ap->a_vp; |
480 | struct ntnode *ip = VTONT(vp); |
481 | |
482 | dprintf(("ntfs_open: %llu\n" , (unsigned long long)ip->i_number)); |
483 | #endif |
484 | |
485 | /* |
486 | * Files marked append-only must be opened for appending. |
487 | */ |
488 | |
489 | return (0); |
490 | } |
491 | |
492 | /* |
493 | * Close called. |
494 | * |
495 | * Update the times on the inode. |
496 | */ |
497 | /* ARGSUSED */ |
498 | static int |
499 | ntfs_close(void *v) |
500 | { |
501 | struct vop_close_args /* { |
502 | struct vnode *a_vp; |
503 | int a_fflag; |
504 | kauth_cred_t a_cred; |
505 | } */ *ap __unused = v; |
506 | #ifdef NTFS_DEBUG |
507 | struct vnode *vp = ap->a_vp; |
508 | struct ntnode *ip = VTONT(vp); |
509 | |
510 | dprintf(("ntfs_close: %llu\n" , (unsigned long long)ip->i_number)); |
511 | #endif |
512 | |
513 | return (0); |
514 | } |
515 | |
516 | int |
517 | ntfs_readdir(void *v) |
518 | { |
519 | struct vop_readdir_args /* { |
520 | struct vnode *a_vp; |
521 | struct uio *a_uio; |
522 | kauth_cred_t a_cred; |
523 | int *a_ncookies; |
524 | u_int **cookies; |
525 | } */ *ap = v; |
526 | struct vnode *vp = ap->a_vp; |
527 | struct fnode *fp = VTOF(vp); |
528 | struct ntnode *ip = FTONT(fp); |
529 | struct uio *uio = ap->a_uio; |
530 | struct ntfsmount *ntmp = ip->i_mp; |
531 | int i, error = 0; |
532 | u_int32_t faked = 0, num; |
533 | int ncookies = 0; |
534 | struct dirent *cde; |
535 | off_t off; |
536 | |
537 | dprintf(("ntfs_readdir %llu off: %qd resid: %qd\n" , |
538 | (unsigned long long)ip->i_number, (long long)uio->uio_offset, |
539 | (long long)uio->uio_resid)); |
540 | |
541 | off = uio->uio_offset; |
542 | |
543 | cde = malloc(sizeof(struct dirent), M_TEMP, M_WAITOK); |
544 | |
545 | /* Simulate . in every dir except ROOT */ |
546 | if (ip->i_number != NTFS_ROOTINO |
547 | && uio->uio_offset < sizeof(struct dirent)) { |
548 | cde->d_fileno = ip->i_number; |
549 | cde->d_reclen = sizeof(struct dirent); |
550 | cde->d_type = DT_DIR; |
551 | cde->d_namlen = 1; |
552 | strncpy(cde->d_name, "." , 2); |
553 | error = uiomove((void *)cde, sizeof(struct dirent), uio); |
554 | if (error) |
555 | goto out; |
556 | |
557 | ncookies++; |
558 | } |
559 | |
560 | /* Simulate .. in every dir including ROOT */ |
561 | if (uio->uio_offset < 2 * sizeof(struct dirent)) { |
562 | cde->d_fileno = NTFS_ROOTINO; /* XXX */ |
563 | cde->d_reclen = sizeof(struct dirent); |
564 | cde->d_type = DT_DIR; |
565 | cde->d_namlen = 2; |
566 | strncpy(cde->d_name, ".." , 3); |
567 | |
568 | error = uiomove((void *) cde, sizeof(struct dirent), uio); |
569 | if (error) |
570 | goto out; |
571 | |
572 | ncookies++; |
573 | } |
574 | |
575 | faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; |
576 | num = uio->uio_offset / sizeof(struct dirent) - faked; |
577 | |
578 | while (uio->uio_resid >= sizeof(struct dirent)) { |
579 | struct attr_indexentry *iep; |
580 | char *fname; |
581 | size_t remains; |
582 | int sz; |
583 | |
584 | error = ntfs_ntreaddir(ntmp, fp, num, &iep); |
585 | if (error) |
586 | goto out; |
587 | |
588 | if (NULL == iep) |
589 | break; |
590 | |
591 | for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); |
592 | iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) |
593 | { |
594 | if(!ntfs_isnamepermitted(ntmp,iep)) |
595 | continue; |
596 | |
597 | remains = sizeof(cde->d_name) - 1; |
598 | fname = cde->d_name; |
599 | for(i=0; i<iep->ie_fnamelen; i++) { |
600 | sz = (*ntmp->ntm_wput)(fname, remains, |
601 | iep->ie_fname[i]); |
602 | fname += sz; |
603 | remains -= sz; |
604 | } |
605 | *fname = '\0'; |
606 | dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, " , |
607 | num, cde->d_name, iep->ie_fnametype, |
608 | iep->ie_flag)); |
609 | cde->d_namlen = fname - (char *) cde->d_name; |
610 | cde->d_fileno = iep->ie_number; |
611 | cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; |
612 | cde->d_reclen = sizeof(struct dirent); |
613 | dprintf(("%s\n" , (cde->d_type == DT_DIR) ? "dir" :"reg" )); |
614 | |
615 | error = uiomove((void *)cde, sizeof(struct dirent), uio); |
616 | if (error) |
617 | goto out; |
618 | |
619 | ncookies++; |
620 | num++; |
621 | } |
622 | } |
623 | |
624 | dprintf(("ntfs_readdir: %d entries (%d bytes) read\n" , |
625 | ncookies,(u_int)(uio->uio_offset - off))); |
626 | dprintf(("ntfs_readdir: off: %qd resid: %qu\n" , |
627 | (long long)uio->uio_offset,(long long)uio->uio_resid)); |
628 | |
629 | if (!error && ap->a_ncookies != NULL) { |
630 | struct dirent* dpStart; |
631 | struct dirent* dp; |
632 | off_t *cookies; |
633 | off_t *cookiep; |
634 | |
635 | dprintf(("ntfs_readdir: %d cookies\n" ,ncookies)); |
636 | dpStart = (struct dirent *) |
637 | ((char *)uio->uio_iov->iov_base - |
638 | (uio->uio_offset - off)); |
639 | cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); |
640 | for (dp = dpStart, cookiep = cookies, i=0; |
641 | i < ncookies; |
642 | dp = (struct dirent *)((char *) dp + dp->d_reclen), i++) { |
643 | off += dp->d_reclen; |
644 | *cookiep++ = (u_int) off; |
645 | } |
646 | *ap->a_ncookies = ncookies; |
647 | *ap->a_cookies = cookies; |
648 | } |
649 | /* |
650 | if (ap->a_eofflag) |
651 | *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; |
652 | */ |
653 | out: |
654 | free(cde, M_TEMP); |
655 | return (error); |
656 | } |
657 | |
658 | int |
659 | ntfs_lookup(void *v) |
660 | { |
661 | struct vop_lookup_v2_args /* { |
662 | struct vnode *a_dvp; |
663 | struct vnode **a_vpp; |
664 | struct componentname *a_cnp; |
665 | } */ *ap = v; |
666 | struct vnode *dvp = ap->a_dvp; |
667 | struct ntnode *dip = VTONT(dvp); |
668 | struct ntfsmount *ntmp = dip->i_mp; |
669 | struct componentname *cnp = ap->a_cnp; |
670 | kauth_cred_t cred = cnp->cn_cred; |
671 | int error; |
672 | |
673 | dprintf(("ntfs_lookup: \"%.*s\" (%lld bytes) in %llu\n" , |
674 | (int)cnp->cn_namelen, cnp->cn_nameptr, (long long)cnp->cn_namelen, |
675 | (unsigned long long)dip->i_number)); |
676 | |
677 | error = VOP_ACCESS(dvp, VEXEC, cred); |
678 | if(error) |
679 | return (error); |
680 | |
681 | if ((cnp->cn_flags & ISLASTCN) && |
682 | (dvp->v_mount->mnt_flag & MNT_RDONLY) && |
683 | (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) |
684 | return (EROFS); |
685 | |
686 | /* |
687 | * We now have a segment name to search for, and a directory |
688 | * to search. |
689 | * |
690 | * Before tediously performing a linear scan of the directory, |
691 | * check the name cache to see if the directory/name pair |
692 | * we are looking for is known already. |
693 | */ |
694 | if (cache_lookup(ap->a_dvp, cnp->cn_nameptr, cnp->cn_namelen, |
695 | cnp->cn_nameiop, cnp->cn_flags, NULL, ap->a_vpp)) { |
696 | return *ap->a_vpp == NULLVP ? ENOENT : 0; |
697 | } |
698 | |
699 | if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { |
700 | dprintf(("ntfs_lookup: faking . directory in %llu\n" , |
701 | (unsigned long long)dip->i_number)); |
702 | |
703 | vref(dvp); |
704 | *ap->a_vpp = dvp; |
705 | error = 0; |
706 | } else if (cnp->cn_flags & ISDOTDOT) { |
707 | struct ntvattr *vap; |
708 | |
709 | dprintf(("ntfs_lookup: faking .. directory in %llu\n" , |
710 | (unsigned long long)dip->i_number)); |
711 | |
712 | error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); |
713 | if (error) { |
714 | return (error); |
715 | } |
716 | |
717 | dprintf(("ntfs_lookup: parentdir: %d\n" , |
718 | vap->va_a_name->n_pnumber)); |
719 | error = ntfs_vgetex(ntmp->ntm_mountp, |
720 | vap->va_a_name->n_pnumber, |
721 | NTFS_A_DATA, "" , 0, ap->a_vpp); |
722 | ntfs_ntvattrrele(vap); |
723 | if (error) { |
724 | return (error); |
725 | } |
726 | } else { |
727 | error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); |
728 | if (error) { |
729 | dprintf(("ntfs_ntlookupfile: returned %d\n" , error)); |
730 | return (error); |
731 | } |
732 | |
733 | dprintf(("ntfs_lookup: found ino: %llu\n" , |
734 | (unsigned long long)VTONT(*ap->a_vpp)->i_number)); |
735 | } |
736 | |
737 | cache_enter(dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen, |
738 | cnp->cn_flags); |
739 | |
740 | return error; |
741 | } |
742 | |
743 | /* |
744 | * Flush the blocks of a file to disk. |
745 | * |
746 | * This function is worthless for vnodes that represent directories. Maybe we |
747 | * could just do a sync if they try an fsync on a directory file. |
748 | */ |
749 | static int |
750 | ntfs_fsync(void *v) |
751 | { |
752 | struct vop_fsync_args /* { |
753 | struct vnode *a_vp; |
754 | kauth_cred_t a_cred; |
755 | int a_flags; |
756 | off_t offlo; |
757 | off_t offhi; |
758 | } */ *ap = v; |
759 | struct vnode *vp = ap->a_vp; |
760 | |
761 | if (ap->a_flags & FSYNC_CACHE) { |
762 | return EOPNOTSUPP; |
763 | } |
764 | |
765 | return vflushbuf(vp, ap->a_flags); |
766 | } |
767 | |
768 | /* |
769 | * Return POSIX pathconf information applicable to NTFS filesystem |
770 | */ |
771 | static int |
772 | ntfs_pathconf(void *v) |
773 | { |
774 | struct vop_pathconf_args /* { |
775 | struct vnode *a_vp; |
776 | int a_name; |
777 | register_t *a_retval; |
778 | } */ *ap = v; |
779 | |
780 | switch (ap->a_name) { |
781 | case _PC_LINK_MAX: |
782 | *ap->a_retval = 1; |
783 | return (0); |
784 | case _PC_NAME_MAX: |
785 | *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; |
786 | return (0); |
787 | case _PC_PATH_MAX: |
788 | *ap->a_retval = PATH_MAX; |
789 | return (0); |
790 | case _PC_CHOWN_RESTRICTED: |
791 | *ap->a_retval = 1; |
792 | return (0); |
793 | case _PC_NO_TRUNC: |
794 | *ap->a_retval = 0; |
795 | return (0); |
796 | case _PC_SYNC_IO: |
797 | *ap->a_retval = 1; |
798 | return (0); |
799 | case _PC_FILESIZEBITS: |
800 | *ap->a_retval = 64; |
801 | return (0); |
802 | default: |
803 | return (EINVAL); |
804 | } |
805 | /* NOTREACHED */ |
806 | } |
807 | |
808 | /* |
809 | * Global vfs data structures |
810 | */ |
811 | vop_t **ntfs_vnodeop_p; |
812 | |
813 | const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { |
814 | { &vop_default_desc, (vop_t *) ntfs_bypass }, |
815 | { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ |
816 | { &vop_create_desc, genfs_eopnotsupp }, /* create */ |
817 | { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ |
818 | { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ |
819 | { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ |
820 | { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ |
821 | { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ |
822 | { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ |
823 | { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ |
824 | { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ |
825 | { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ |
826 | { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */ |
827 | { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ |
828 | { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ |
829 | { &vop_poll_desc, genfs_poll }, /* poll */ |
830 | { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ |
831 | { &vop_revoke_desc, genfs_revoke }, /* revoke */ |
832 | { &vop_mmap_desc, genfs_mmap }, /* mmap */ |
833 | { &vop_fsync_desc, (vop_t *) ntfs_fsync }, /* fsync */ |
834 | { &vop_seek_desc, genfs_seek }, /* seek */ |
835 | { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ |
836 | { &vop_link_desc, genfs_eopnotsupp }, /* link */ |
837 | { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ |
838 | { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ |
839 | { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ |
840 | { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ |
841 | { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ |
842 | { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ |
843 | { &vop_abortop_desc, genfs_abortop }, /* abortop */ |
844 | { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ |
845 | { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ |
846 | { &vop_lock_desc, genfs_lock }, /* lock */ |
847 | { &vop_unlock_desc, genfs_unlock }, /* unlock */ |
848 | { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ |
849 | { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ |
850 | { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ |
851 | { &vop_islocked_desc, genfs_islocked }, /* islocked */ |
852 | { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ |
853 | { &vop_advlock_desc, genfs_nullop }, /* advlock */ |
854 | { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ |
855 | { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ |
856 | { &vop_putpages_desc, genfs_putpages }, /* putpages */ |
857 | { NULL, NULL } |
858 | }; |
859 | const struct vnodeopv_desc ntfs_vnodeop_opv_desc = |
860 | { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; |
861 | |