Annotation of sys/ntfs/ntfs_vnops.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ntfs_vnops.c,v 1.11 2007/06/01 23:52:38 deraadt Exp $ */
2: /* $NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $ */
3:
4: /*
5: * Copyright (c) 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * John Heidemann of the UCLA Ficus project.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp
36: *
37: */
38:
39: #include <sys/cdefs.h>
40: #ifdef __KERNEL_RCSID
41: __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $");
42: #endif
43:
44: #include <sys/param.h>
45: #include <sys/systm.h>
46: #include <sys/kernel.h>
47: #include <sys/time.h>
48: #include <sys/stat.h>
49: #include <sys/vnode.h>
50: #include <sys/mount.h>
51: #include <sys/namei.h>
52: #include <sys/malloc.h>
53: #include <sys/buf.h>
54: #include <sys/dirent.h>
55:
56: #if !defined(__NetBSD__) && !defined(__OpenBSD__)
57: #include <vm/vm.h>
58: #endif
59:
60: #if defined(__FreeBSD__)
61: #include <vm/vnode_pager.h>
62: #endif
63:
64: #include <sys/sysctl.h>
65:
66:
67: /*#define NTFS_DEBUG 1*/
68: #if defined(__FreeBSD__) || defined(__NetBSD__)
69: #include <fs/ntfs/ntfs.h>
70: #include <fs/ntfs/ntfs_inode.h>
71: #include <fs/ntfs/ntfs_subr.h>
72: #include <miscfs/genfs/genfs.h>
73: #else
74: #include <ntfs/ntfs.h>
75: #include <ntfs/ntfs_inode.h>
76: #include <ntfs/ntfs_subr.h>
77: #endif
78:
79: #include <miscfs/specfs/specdev.h>
80:
81: #include <sys/unistd.h> /* for pathconf(2) constants */
82:
83: static int ntfs_bypass(struct vop_generic_args *ap);
84: static int ntfs_read(struct vop_read_args *);
85: static int ntfs_write(struct vop_write_args *ap);
86: static int ntfs_getattr(struct vop_getattr_args *ap);
87: static int ntfs_inactive(struct vop_inactive_args *ap);
88: static int ntfs_print(struct vop_print_args *ap);
89: static int ntfs_reclaim(struct vop_reclaim_args *ap);
90: static int ntfs_strategy(struct vop_strategy_args *ap);
91: static int ntfs_access(struct vop_access_args *ap);
92: static int ntfs_open(struct vop_open_args *ap);
93: static int ntfs_close(struct vop_close_args *ap);
94: static int ntfs_readdir(struct vop_readdir_args *ap);
95: static int ntfs_lookup(struct vop_lookup_args *ap);
96: static int ntfs_bmap(struct vop_bmap_args *ap);
97: #if defined(__FreeBSD__)
98: static int ntfs_getpages(struct vop_getpages_args *ap);
99: static int ntfs_putpages(struct vop_putpages_args *);
100: #endif
101: #if defined(__FreeBSD__) || defined(__OpenBSD__)
102: static int ntfs_fsync(struct vop_fsync_args *ap);
103: #endif
104: static int ntfs_pathconf(void *);
105:
106: int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
107:
108: #if defined(__FreeBSD__)
109: int
110: ntfs_getpages(ap)
111: struct vop_getpages_args *ap;
112: {
113: return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
114: ap->a_reqpage);
115: }
116:
117: int
118: ntfs_putpages(ap)
119: struct vop_putpages_args *ap;
120: {
121: return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
122: ap->a_sync, ap->a_rtvals);
123: }
124: #endif
125:
126: /*
127: * This is a noop, simply returning what one has been given.
128: */
129: int
130: ntfs_bmap(ap)
131: struct vop_bmap_args *ap;
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__) && !defined(__OpenBSD__)
141: if (ap->a_runb != NULL)
142: *ap->a_runb = 0;
143: #endif
144: return (0);
145: }
146:
147: static int
148: ntfs_read(ap)
149: struct vop_read_args *ap;
150: {
151: struct vnode *vp = ap->a_vp;
152: struct fnode *fp = VTOF(vp);
153: struct ntnode *ip = FTONT(fp);
154: struct uio *uio = ap->a_uio;
155: struct ntfsmount *ntmp = ip->i_mp;
156: u_int64_t toread;
157: int error;
158:
159: 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));
160:
161: dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
162:
163: /* don't allow reading after end of file */
164: if (uio->uio_offset > fp->f_size)
165: toread = 0;
166: else
167: toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset );
168:
169: dprintf((", toread: %d\n",(u_int32_t)toread));
170:
171: if (toread == 0)
172: return (0);
173:
174: error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
175: fp->f_attrname, uio->uio_offset, toread, NULL, uio);
176: if (error) {
177: printf("ntfs_read: ntfs_readattr failed: %d\n",error);
178: return (error);
179: }
180:
181: return (0);
182: }
183:
184: static int
185: ntfs_bypass(ap)
186: struct vop_generic_args *ap;
187: {
188: int error = ENOTTY;
189: dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
190: return (error);
191: }
192:
193:
194: static int
195: ntfs_getattr(ap)
196: struct vop_getattr_args *ap;
197: {
198: struct vnode *vp = ap->a_vp;
199: struct fnode *fp = VTOF(vp);
200: struct ntnode *ip = FTONT(fp);
201: struct vattr *vap = ap->a_vap;
202:
203: dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
204:
205: #if defined(__FreeBSD__)
206: vap->va_fsid = dev2udev(ip->i_dev);
207: #else /* NetBSD */
208: vap->va_fsid = ip->i_dev;
209: #endif
210: vap->va_fileid = ip->i_number;
211: vap->va_mode = ip->i_mp->ntm_mode;
212: vap->va_nlink = ip->i_nlink;
213: vap->va_uid = ip->i_mp->ntm_uid;
214: vap->va_gid = ip->i_mp->ntm_gid;
215: vap->va_rdev = 0; /* XXX UNODEV ? */
216: vap->va_size = fp->f_size;
217: vap->va_bytes = fp->f_allocated;
218: vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
219: vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
220: vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
221: vap->va_flags = ip->i_flag;
222: vap->va_gen = 0;
223: vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
224: vap->va_type = vp->v_type;
225: vap->va_filerev = 0;
226: return (0);
227: }
228:
229:
230: /*
231: * Last reference to an ntnode. If necessary, write or delete it.
232: */
233: int
234: ntfs_inactive(ap)
235: struct vop_inactive_args *ap;
236: {
237: struct vnode *vp = ap->a_vp;
238: #ifdef __OpenBSD__
239: struct proc *p = ap->a_p;
240: #endif
241: #ifdef NTFS_DEBUG
242: struct ntnode *ip = VTONT(vp);
243: #endif
244:
245: dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
246:
247: #ifdef DIAGNOSTIC
248: if (ntfs_prtactive && vp->v_usecount != 0)
249: vprint("ntfs_inactive: pushing active", vp);
250: #endif
251:
252: VOP__UNLOCK(vp, 0, p);
253:
254: /* XXX since we don't support any filesystem changes
255: * right now, nothing more needs to be done
256: */
257: return (0);
258: }
259:
260: /*
261: * Reclaim an fnode/ntnode so that it can be used for other purposes.
262: */
263: int
264: ntfs_reclaim(ap)
265: struct vop_reclaim_args *ap;
266: {
267: struct vnode *vp = ap->a_vp;
268: struct fnode *fp = VTOF(vp);
269: struct ntnode *ip = FTONT(fp);
270: #ifdef __OpenBSD__
271: struct proc *p = ap->a_p;
272: #endif
273: int error;
274:
275: dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
276:
277: #ifdef DIAGNOSTIC
278: if (ntfs_prtactive && vp->v_usecount != 0)
279: vprint("ntfs_reclaim: pushing active", vp);
280: #endif
281:
282: #ifndef __OpenBSD__
283: if ((error = ntfs_ntget(ip)) != 0)
284: #else
285: if ((error = ntfs_ntget(ip, p)) != 0)
286: #endif
287: return (error);
288:
289: /* Purge old data structures associated with the inode. */
290: cache_purge(vp);
291:
292: ntfs_frele(fp);
293: #ifndef __OpenBSD__
294: ntfs_ntput(ip);
295: #else
296: ntfs_ntput(ip, p);
297: #endif
298: vp->v_data = NULL;
299:
300: return (0);
301: }
302:
303: static int
304: ntfs_print(ap)
305: struct vop_print_args *ap;
306: {
307: struct ntnode *ip = VTONT(ap->a_vp);
308:
309: printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n",
310: ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink);
311:
312: return (0);
313: }
314:
315: /*
316: * Calculate the logical to physical mapping if not done already,
317: * then call the device strategy routine.
318: */
319: int
320: ntfs_strategy(ap)
321: struct vop_strategy_args *ap;
322: {
323: struct buf *bp = ap->a_bp;
324: struct vnode *vp = bp->b_vp;
325: struct fnode *fp = VTOF(vp);
326: struct ntnode *ip = FTONT(fp);
327: struct ntfsmount *ntmp = ip->i_mp;
328: int error;
329:
330: #ifdef __FreeBSD__
331: dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
332: (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
333: (u_int32_t)bp->b_lblkno));
334: #else
335: dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
336: (u_int32_t)bp->b_blkno,
337: (u_int32_t)bp->b_lblkno));
338: #endif
339:
340: dprintf(("strategy: bcount: %u flags: 0x%x\n",
341: (u_int32_t)bp->b_bcount,bp->b_flags));
342:
343: if (bp->b_flags & B_READ) {
344: u_int32_t toread;
345:
346: if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
347: clrbuf(bp);
348: error = 0;
349: } else {
350: toread = MIN(bp->b_bcount,
351: fp->f_size - ntfs_cntob(bp->b_blkno));
352: dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
353: toread,(u_int32_t)fp->f_size));
354:
355: error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
356: fp->f_attrname, ntfs_cntob(bp->b_blkno),
357: toread, bp->b_data, NULL);
358:
359: if (error) {
360: printf("ntfs_strategy: ntfs_readattr failed\n");
361: bp->b_error = error;
362: bp->b_flags |= B_ERROR;
363: }
364:
365: bzero(bp->b_data + toread, bp->b_bcount - toread);
366: }
367: } else {
368: size_t tmp;
369: u_int32_t towrite;
370:
371: if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
372: printf("ntfs_strategy: CAN'T EXTEND FILE\n");
373: bp->b_error = error = EFBIG;
374: bp->b_flags |= B_ERROR;
375: } else {
376: towrite = MIN(bp->b_bcount,
377: fp->f_size - ntfs_cntob(bp->b_blkno));
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,
382: fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
383: bp->b_data, &tmp, NULL);
384:
385: if (error) {
386: printf("ntfs_strategy: ntfs_writeattr fail\n");
387: bp->b_error = error;
388: bp->b_flags |= B_ERROR;
389: }
390: }
391: }
392: biodone(bp);
393: return (error);
394: }
395:
396: static int
397: ntfs_write(ap)
398: struct vop_write_args *ap;
399: {
400: struct vnode *vp = ap->a_vp;
401: struct fnode *fp = VTOF(vp);
402: struct ntnode *ip = FTONT(fp);
403: struct uio *uio = ap->a_uio;
404: struct ntfsmount *ntmp = ip->i_mp;
405: u_int64_t towrite;
406: size_t written;
407: int error;
408:
409: 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));
410: dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
411:
412: if (uio->uio_resid + uio->uio_offset > fp->f_size) {
413: printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
414: return (EFBIG);
415: }
416:
417: towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset);
418:
419: dprintf((", towrite: %d\n",(u_int32_t)towrite));
420:
421: error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
422: fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
423: #ifdef NTFS_DEBUG
424: if (error)
425: printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
426: #endif
427:
428: return (error);
429: }
430:
431: int
432: ntfs_access(ap)
433: struct vop_access_args *ap;
434: {
435: struct vnode *vp = ap->a_vp;
436: struct ntnode *ip = VTONT(vp);
437: struct ucred *cred = ap->a_cred;
438: mode_t mask, mode = ap->a_mode;
439: gid_t *gp;
440: int i;
441:
442: dprintf(("ntfs_access: %d\n",ip->i_number));
443:
444: /*
445: * Disallow write attempts on read-only file systems;
446: * unless the file is a socket, fifo, or a block or
447: * character device resident on the file system.
448: */
449: if (mode & VWRITE) {
450: switch ((int)vp->v_type) {
451: case VDIR:
452: case VLNK:
453: case VREG:
454: if (vp->v_mount->mnt_flag & MNT_RDONLY)
455: return (EROFS);
456: break;
457: }
458: }
459:
460: /* Otherwise, user id 0 always gets access. */
461: if (cred->cr_uid == 0)
462: return (0);
463:
464: mask = 0;
465:
466: /* Otherwise, check the owner. */
467: if (cred->cr_uid == ip->i_mp->ntm_uid) {
468: if (mode & VEXEC)
469: mask |= S_IXUSR;
470: if (mode & VREAD)
471: mask |= S_IRUSR;
472: if (mode & VWRITE)
473: mask |= S_IWUSR;
474: return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
475: }
476:
477: /* Otherwise, check the groups. */
478: for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
479: if (ip->i_mp->ntm_gid == *gp) {
480: if (mode & VEXEC)
481: mask |= S_IXGRP;
482: if (mode & VREAD)
483: mask |= S_IRGRP;
484: if (mode & VWRITE)
485: mask |= S_IWGRP;
486: return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
487: }
488:
489: /* Otherwise, check everyone else. */
490: if (mode & VEXEC)
491: mask |= S_IXOTH;
492: if (mode & VREAD)
493: mask |= S_IROTH;
494: if (mode & VWRITE)
495: mask |= S_IWOTH;
496: return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
497: }
498:
499: /*
500: * Open called.
501: *
502: * Nothing to do.
503: */
504: /* ARGSUSED */
505: static int
506: ntfs_open(ap)
507: struct vop_open_args *ap;
508: {
509: #if NTFS_DEBUG
510: struct vnode *vp = ap->a_vp;
511: struct ntnode *ip = VTONT(vp);
512:
513: printf("ntfs_open: %d\n",ip->i_number);
514: #endif
515:
516: /*
517: * Files marked append-only must be opened for appending.
518: */
519:
520: return (0);
521: }
522:
523: /*
524: * Close called.
525: *
526: * Update the times on the inode.
527: */
528: /* ARGSUSED */
529: static int
530: ntfs_close(ap)
531: struct vop_close_args *ap;
532: {
533: #if NTFS_DEBUG
534: struct vnode *vp = ap->a_vp;
535: struct ntnode *ip = VTONT(vp);
536:
537: printf("ntfs_close: %d\n",ip->i_number);
538: #endif
539:
540: return (0);
541: }
542:
543: int
544: ntfs_readdir(ap)
545: struct vop_readdir_args *ap;
546: {
547: struct vnode *vp = ap->a_vp;
548: struct fnode *fp = VTOF(vp);
549: struct ntnode *ip = FTONT(fp);
550: struct uio *uio = ap->a_uio;
551: struct ntfsmount *ntmp = ip->i_mp;
552: int i, error = 0;
553: u_int32_t faked = 0, num;
554: int ncookies = 0;
555: struct dirent *cde;
556: off_t off;
557:
558: dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
559:
560: off = uio->uio_offset;
561:
562: MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK);
563:
564: /* Simulate . in every dir except ROOT */
565: if (ip->i_number != NTFS_ROOTINO
566: && uio->uio_offset < sizeof(struct dirent)) {
567: cde->d_fileno = ip->i_number;
568: cde->d_reclen = sizeof(struct dirent);
569: cde->d_type = DT_DIR;
570: cde->d_namlen = 1;
571: strncpy(cde->d_name, ".", 2);
572: error = uiomove((void *)cde, sizeof(struct dirent), uio);
573: if (error)
574: goto out;
575:
576: ncookies++;
577: }
578:
579: /* Simulate .. in every dir including ROOT */
580: if (uio->uio_offset < 2 * sizeof(struct dirent)) {
581: cde->d_fileno = NTFS_ROOTINO; /* XXX */
582: cde->d_reclen = sizeof(struct dirent);
583: cde->d_type = DT_DIR;
584: cde->d_namlen = 2;
585: strncpy(cde->d_name, "..", 3);
586:
587: error = uiomove((void *) cde, sizeof(struct dirent), uio);
588: if (error)
589: goto out;
590:
591: ncookies++;
592: }
593:
594: faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
595: num = uio->uio_offset / sizeof(struct dirent) - faked;
596:
597: while (uio->uio_resid >= sizeof(struct dirent)) {
598: struct attr_indexentry *iep;
599: char *fname;
600: size_t remains;
601: int sz;
602:
603: #ifndef __OpenBSD__
604: error = ntfs_ntreaddir(ntmp, fp, num, &iep);
605: #else
606: error = ntfs_ntreaddir(ntmp, fp, num, &iep, uio->uio_procp);
607: #endif
608: if (error)
609: goto out;
610:
611: if (NULL == iep)
612: break;
613:
614: for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
615: iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
616: {
617: if(!ntfs_isnamepermitted(ntmp,iep))
618: continue;
619:
620: remains = sizeof(cde->d_name) - 1;
621: fname = cde->d_name;
622: for(i=0; i<iep->ie_fnamelen; i++) {
623: sz = (*ntmp->ntm_wput)(fname, remains,
624: iep->ie_fname[i]);
625: fname += sz;
626: remains -= sz;
627: }
628: *fname = '\0';
629: dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
630: num, cde->d_name, iep->ie_fnametype,
631: iep->ie_flag));
632: cde->d_namlen = fname - (char *) cde->d_name;
633: cde->d_fileno = iep->ie_number;
634: cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
635: cde->d_reclen = sizeof(struct dirent);
636: dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg"));
637:
638: error = uiomove((void *)cde, sizeof(struct dirent), uio);
639: if (error)
640: goto out;
641:
642: ncookies++;
643: num++;
644: }
645: }
646:
647: dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
648: ncookies,(u_int)(uio->uio_offset - off)));
649: dprintf(("ntfs_readdir: off: %d resid: %d\n",
650: (u_int32_t)uio->uio_offset,uio->uio_resid));
651:
652: if (!error && ap->a_ncookies != NULL) {
653: struct dirent* dpStart;
654: struct dirent* dp;
655: #if defined(__FreeBSD__) || defined(__OpenBSD__)
656: u_long *cookies;
657: u_long *cookiep;
658: #else /* defined(__NetBSD__) */
659: off_t *cookies;
660: off_t *cookiep;
661: #endif
662:
663: dprintf(("ntfs_readdir: %d cookies\n",ncookies));
664: if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
665: panic("ntfs_readdir: unexpected uio from NFS server");
666: dpStart = (struct dirent *)
667: ((caddr_t)uio->uio_iov->iov_base -
668: (uio->uio_offset - off));
669: #if defined(__FreeBSD__)
670: MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
671: M_TEMP, M_WAITOK);
672: #else /* defined(__NetBSD__) */
673: cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
674: #endif
675: for (dp = dpStart, cookiep = cookies, i=0;
676: i < ncookies;
677: dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
678: off += dp->d_reclen;
679: *cookiep++ = (u_int) off;
680: }
681: *ap->a_ncookies = ncookies;
682: *ap->a_cookies = cookies;
683: }
684: /*
685: if (ap->a_eofflag)
686: *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
687: */
688: out:
689: FREE(cde, M_TEMP);
690: return (error);
691: }
692:
693: int
694: ntfs_lookup(ap)
695: struct vop_lookup_args *ap;
696: {
697: struct vnode *dvp = ap->a_dvp;
698: struct ntnode *dip = VTONT(dvp);
699: struct ntfsmount *ntmp = dip->i_mp;
700: struct componentname *cnp = ap->a_cnp;
701: struct ucred *cred = cnp->cn_cred;
702: int error;
703: int lockparent = cnp->cn_flags & LOCKPARENT;
704: #ifdef __OpenBSD__
705: struct proc *p = cnp->cn_proc;
706: #endif
707: #if NTFS_DEBUG
708: int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
709: #endif
710: dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
711: (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
712: dip->i_number, lockparent, wantparent));
713:
714: error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
715: if(error)
716: return (error);
717:
718: if ((cnp->cn_flags & ISLASTCN) &&
719: (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
720: (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
721: return (EROFS);
722:
723: #if defined(__NetBSD__) || defined(__OpenBSD__)
724: /*
725: * We now have a segment name to search for, and a directory
726: * to search.
727: *
728: * Before tediously performing a linear scan of the directory,
729: * check the name cache to see if the directory/name pair
730: * we are looking for is known already.
731: */
732: if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
733: return (error);
734: #endif
735:
736: if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
737: dprintf(("ntfs_lookup: faking . directory in %d\n",
738: dip->i_number));
739:
740: VREF(dvp);
741: *ap->a_vpp = dvp;
742: error = 0;
743: } else if (cnp->cn_flags & ISDOTDOT) {
744: struct ntvattr *vap;
745:
746: dprintf(("ntfs_lookup: faking .. directory in %d\n",
747: dip->i_number));
748:
749: VOP__UNLOCK(dvp, 0, p);
750: cnp->cn_flags |= PDIRUNLOCK;
751:
752: error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
753: if(error)
754: return (error);
755:
756: dprintf(("ntfs_lookup: parentdir: %d\n",
757: vap->va_a_name->n_pnumber));
758: error = VFS_VGET(ntmp->ntm_mountp,
759: vap->va_a_name->n_pnumber,ap->a_vpp);
760: ntfs_ntvattrrele(vap);
761: if (error) {
762: if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p) == 0)
763: cnp->cn_flags &= ~PDIRUNLOCK;
764: return (error);
765: }
766:
767: if (lockparent && (cnp->cn_flags & ISLASTCN)) {
768: error = VN_LOCK(dvp, LK_EXCLUSIVE, p);
769: if (error) {
770: vput( *(ap->a_vpp) );
771: return (error);
772: }
773: cnp->cn_flags &= ~PDIRUNLOCK;
774: }
775: } else {
776: #ifndef __OpenBSD__
777: error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
778: #else
779: error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp, p);
780: #endif
781: if (error) {
782: dprintf(("ntfs_ntlookupfile: returned %d\n", error));
783: return (error);
784: }
785:
786: dprintf(("ntfs_lookup: found ino: %d\n",
787: VTONT(*ap->a_vpp)->i_number));
788:
789: if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) {
790: VOP__UNLOCK(dvp, 0, p);
791: cnp->cn_flags |= PDIRUNLOCK;
792: }
793: }
794:
795: if (cnp->cn_flags & MAKEENTRY)
796: cache_enter(dvp, *ap->a_vpp, cnp);
797:
798: return (error);
799: }
800:
801: #if defined(__FreeBSD__) || defined(__OpenBSD__)
802: /*
803: * Flush the blocks of a file to disk.
804: *
805: * This function is worthless for vnodes that represent directories. Maybe we
806: * could just do a sync if they try an fsync on a directory file.
807: */
808: static int
809: ntfs_fsync(ap)
810: struct vop_fsync_args *ap;
811: {
812: return (0);
813: }
814: #endif
815:
816: /*
817: * Return POSIX pathconf information applicable to NTFS filesystem
818: */
819: static int
820: ntfs_pathconf(v)
821: void *v;
822: {
823: struct vop_pathconf_args *ap = v;
824:
825: switch (ap->a_name) {
826: case _PC_LINK_MAX:
827: *ap->a_retval = 1;
828: return (0);
829: case _PC_NAME_MAX:
830: *ap->a_retval = NTFS_MAXFILENAME;
831: return (0);
832: case _PC_PATH_MAX:
833: *ap->a_retval = PATH_MAX;
834: return (0);
835: case _PC_CHOWN_RESTRICTED:
836: *ap->a_retval = 1;
837: return (0);
838: case _PC_NO_TRUNC:
839: *ap->a_retval = 0;
840: return (0);
841: #ifdef __NetBSD__
842: case _PC_SYNC_IO:
843: *ap->a_retval = 1;
844: return (0);
845: case _PC_FILESIZEBITS:
846: *ap->a_retval = 64;
847: return (0);
848: #endif
849: default:
850: return (EINVAL);
851: }
852: /* NOTREACHED */
853: }
854:
855: /*
856: * Global vfs data structures
857: */
858: vop_t **ntfs_vnodeop_p;
859: #if defined(__FreeBSD__)
860: static
861: struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
862: { &vop_default_desc, (vop_t *)ntfs_bypass },
863:
864: { &vop_getattr_desc, (vop_t *)ntfs_getattr },
865: { &vop_inactive_desc, (vop_t *)ntfs_inactive },
866: { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
867: { &vop_print_desc, (vop_t *)ntfs_print },
868: { &vop_pathconf_desc, ntfs_pathconf },
869:
870: { &vop_islocked_desc, (vop_t *)vop_stdislocked },
871: { &vop_unlock_desc, (vop_t *)vop_stdunlock },
872: { &vop_lock_desc, (vop_t *)vop_stdlock },
873: { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
874: { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
875:
876: { &vop_access_desc, (vop_t *)ntfs_access },
877: { &vop_close_desc, (vop_t *)ntfs_close },
878: { &vop_open_desc, (vop_t *)ntfs_open },
879: { &vop_readdir_desc, (vop_t *)ntfs_readdir },
880: { &vop_fsync_desc, (vop_t *)ntfs_fsync },
881:
882: { &vop_bmap_desc, (vop_t *)ntfs_bmap },
883: { &vop_getpages_desc, (vop_t *) ntfs_getpages },
884: { &vop_putpages_desc, (vop_t *) ntfs_putpages },
885: { &vop_strategy_desc, (vop_t *)ntfs_strategy },
886: { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
887: { &vop_read_desc, (vop_t *)ntfs_read },
888: { &vop_write_desc, (vop_t *)ntfs_write },
889:
890: { NULL, NULL }
891: };
892:
893: static
894: struct vnodeopv_desc ntfs_vnodeop_opv_desc =
895: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
896:
897: VNODEOP_SET(ntfs_vnodeop_opv_desc);
898:
899: #elif defined(__OpenBSD__)
900: static
901: struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
902: { &vop_default_desc, (vop_t *)ntfs_bypass },
903:
904: { &vop_getattr_desc, (vop_t *)ntfs_getattr },
905: { &vop_inactive_desc, (vop_t *)ntfs_inactive },
906: { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
907: { &vop_print_desc, (vop_t *)ntfs_print },
908: { &vop_pathconf_desc, ntfs_pathconf },
909:
910: { &vop_islocked_desc, (vop_t *)vop_generic_islocked },
911: { &vop_unlock_desc, (vop_t *)vop_generic_unlock },
912: { &vop_lock_desc, (vop_t *)vop_generic_lock },
913: { &vop_lookup_desc, (vop_t *)ntfs_lookup },
914:
915: { &vop_access_desc, (vop_t *)ntfs_access },
916: { &vop_close_desc, (vop_t *)ntfs_close },
917: { &vop_open_desc, (vop_t *)ntfs_open },
918: { &vop_readdir_desc, (vop_t *)ntfs_readdir },
919: { &vop_fsync_desc, (vop_t *)ntfs_fsync },
920:
921: { &vop_bmap_desc, (vop_t *)ntfs_bmap },
922: { &vop_strategy_desc, (vop_t *)ntfs_strategy },
923: { &vop_bwrite_desc, (vop_t *)vop_generic_bwrite },
924: { &vop_read_desc, (vop_t *)ntfs_read },
925: { &vop_write_desc, (vop_t *)ntfs_write },
926:
927: { NULL, NULL }
928: };
929:
930: const struct vnodeopv_desc ntfs_vnodeop_opv_desc =
931: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
932:
933: #else /* !FreeBSD && !OpenBSD*/
934:
935: const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
936: { &vop_default_desc, (vop_t *) ntfs_bypass },
937: { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
938: { &vop_create_desc, genfs_eopnotsupp }, /* create */
939: { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
940: { &vop_open_desc, (vop_t *) ntfs_open }, /* open */
941: { &vop_close_desc,(vop_t *) ntfs_close }, /* close */
942: { &vop_access_desc, (vop_t *) ntfs_access }, /* access */
943: { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
944: { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
945: { &vop_read_desc, (vop_t *) ntfs_read }, /* read */
946: { &vop_write_desc, (vop_t *) ntfs_write }, /* write */
947: { &vop_lease_desc, genfs_lease_check }, /* lease */
948: { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
949: { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
950: { &vop_poll_desc, genfs_poll }, /* poll */
951: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
952: { &vop_revoke_desc, genfs_revoke }, /* revoke */
953: { &vop_mmap_desc, genfs_mmap }, /* mmap */
954: { &vop_fsync_desc, genfs_fsync }, /* fsync */
955: { &vop_seek_desc, genfs_seek }, /* seek */
956: { &vop_remove_desc, genfs_eopnotsupp }, /* remove */
957: { &vop_link_desc, genfs_eopnotsupp }, /* link */
958: { &vop_rename_desc, genfs_eopnotsupp }, /* rename */
959: { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
960: { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
961: { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
962: { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
963: { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
964: { &vop_abortop_desc, genfs_abortop }, /* abortop */
965: { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
966: { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
967: { &vop_lock_desc, genfs_lock }, /* lock */
968: { &vop_unlock_desc, genfs_unlock }, /* unlock */
969: { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
970: { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
971: { &vop_print_desc, (vop_t *) ntfs_print }, /* print */
972: { &vop_islocked_desc, genfs_islocked }, /* islocked */
973: { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
974: { &vop_advlock_desc, genfs_nullop }, /* advlock */
975: { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */
976: { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */
977: { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */
978: { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */
979: { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */
980: { &vop_update_desc, genfs_eopnotsupp }, /* update */
981: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
982: { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */
983: { &vop_putpages_desc, genfs_putpages }, /* putpages */
984: { NULL, NULL }
985: };
986: const struct vnodeopv_desc ntfs_vnodeop_opv_desc =
987: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
988:
989: #endif
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