kernel - Adjust UFS and HAMMER to use uiomovebp()
[dragonfly.git] / sys / vfs / ntfs / ntfs_subr.c
CommitLineData
984263bc
MD
1/* $NetBSD: ntfs_subr.c,v 1.23 1999/10/31 19:45:26 jdolecek Exp $ */
2
3/*-
4 * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: src/sys/ntfs/ntfs_subr.c,v 1.7.2.4 2001/10/12 22:08:49 semenu Exp $
29 */
30
31#include <sys/param.h>
32#include <sys/types.h>
33#include <sys/systm.h>
984263bc 34#include <sys/proc.h>
dadab5e9 35#include <sys/namei.h>
984263bc
MD
36#include <sys/kernel.h>
37#include <sys/vnode.h>
38#include <sys/mount.h>
39#include <sys/buf.h>
40#include <sys/file.h>
41#include <sys/malloc.h>
42#include <sys/lock.h>
86432c0b 43#include <sys/spinlock.h>
23731001 44#include <sys/iconv.h>
984263bc 45
f91a71dd
JS
46#include <machine/inttypes.h>
47
54341a3b
MD
48#include <sys/buf2.h>
49#include <sys/spinlock2.h>
50
984263bc
MD
51#if defined(__NetBSD__)
52#include <miscfs/specfs/specdev.h>
53#endif
54
1f2de5d4
MD
55#include "ntfs.h"
56#include "ntfsmount.h"
57#include "ntfs_inode.h"
58#include "ntfs_vfsops.h"
59#include "ntfs_subr.h"
60#include "ntfs_compr.h"
61#include "ntfs_ihash.h"
984263bc 62
08c23b99 63#if defined(__DragonFly__)
984263bc
MD
64MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information");
65MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data");
66MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage");
67MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary");
68#endif
69
a6ee311a
RG
70static int ntfs_ntlookupattr (struct ntfsmount *, const char *, int, int *, char **);
71static int ntfs_findvattr (struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t);
72static int ntfs_uastricmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t);
73static int ntfs_uastrcmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t);
984263bc
MD
74
75/* table for mapping Unicode chars into uppercase; it's filled upon first
76 * ntfs mount, freed upon last ntfs umount */
77static wchar *ntfs_toupper_tab;
78#define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)])
79static struct lock ntfs_toupper_lock;
80static signed int ntfs_toupper_usecount;
23731001 81extern struct iconv_functions *ntfs_iconv;
984263bc
MD
82
83/* support macro for ntfs_ntvattrget() */
84#define NTFS_AALPCMP(aalp,type,name,namelen) ( \
85 (aalp->al_type == type) && (aalp->al_namelen == namelen) && \
86 !NTFS_UASTRCMP(aalp->al_name,aalp->al_namelen,name,namelen) )
87
88/*
89 *
90 */
91int
cd0a65a2 92ntfs_ntvattrrele(struct ntvattr *vap)
984263bc 93{
f91a71dd 94 dprintf(("ntfs_ntvattrrele: ino: %"PRId64", type: 0x%x\n",
984263bc
MD
95 vap->va_ip->i_number, vap->va_type));
96
97 ntfs_ntrele(vap->va_ip);
98
99 return (0);
100}
101
102/*
103 * find the attribute in the ntnode
104 */
105static int
cd0a65a2
CP
106ntfs_findvattr(struct ntfsmount *ntmp, struct ntnode *ip,
107 struct ntvattr **lvapp, struct ntvattr **vapp, u_int32_t type,
108 const char *name, size_t namelen, cn_t vcn)
984263bc
MD
109{
110 int error;
111 struct ntvattr *vap;
112
113 if((ip->i_flag & IN_LOADED) == 0) {
f91a71dd 114 dprintf(("ntfs_findvattr: node not loaded, ino: %"PRId64"\n",
984263bc
MD
115 ip->i_number));
116 error = ntfs_loadntnode(ntmp,ip);
117 if (error) {
086c1d7e 118 kprintf("ntfs_findvattr: FAILED TO LOAD INO: %"PRId64"\n",
984263bc
MD
119 ip->i_number);
120 return (error);
121 }
122 }
123
124 *lvapp = NULL;
125 *vapp = NULL;
126 for (vap = ip->i_valist.lh_first; vap; vap = vap->va_list.le_next) {
127 ddprintf(("ntfs_findvattr: type: 0x%x, vcn: %d - %d\n", \
128 vap->va_type, (u_int32_t) vap->va_vcnstart, \
129 (u_int32_t) vap->va_vcnend));
130 if ((vap->va_type == type) &&
131 (vap->va_vcnstart <= vcn) && (vap->va_vcnend >= vcn) &&
132 (vap->va_namelen == namelen) &&
133 (strncmp(name, vap->va_name, namelen) == 0)) {
134 *vapp = vap;
135 ntfs_ntref(vap->va_ip);
136 return (0);
137 }
138 if (vap->va_type == NTFS_A_ATTRLIST)
139 *lvapp = vap;
140 }
141
142 return (-1);
143}
144
145/*
146 * Search attribute specifed in ntnode (load ntnode if nessecary).
147 * If not found but ATTR_A_ATTRLIST present, read it in and search throught.
148 * VOP_VGET node needed, and lookup througth it's ntnode (load if nessesary).
149 *
150 * ntnode should be locked
151 */
152int
cd0a65a2
CP
153ntfs_ntvattrget(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t type,
154 const char *name, cn_t vcn, struct ntvattr **vapp)
984263bc
MD
155{
156 struct ntvattr *lvap = NULL;
157 struct attr_attrlist *aalp;
158 struct attr_attrlist *nextaalp;
159 struct vnode *newvp;
160 struct ntnode *newip;
161 caddr_t alpool;
162 size_t namelen, len;
163 int error;
164
165 *vapp = NULL;
166
167 if (name) {
168 dprintf(("ntfs_ntvattrget: " \
f91a71dd 169 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \
984263bc
MD
170 ip->i_number, type, name, (u_int32_t) vcn));
171 namelen = strlen(name);
172 } else {
173 dprintf(("ntfs_ntvattrget: " \
f91a71dd 174 "ino: %"PRId64", type: 0x%x, vcn: %d\n", \
984263bc
MD
175 ip->i_number, type, (u_int32_t) vcn));
176 name = "";
177 namelen = 0;
178 }
179
180 error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn);
181 if (error >= 0)
182 return (error);
183
184 if (!lvap) {
185 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \
f91a71dd 186 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \
984263bc
MD
187 ip->i_number, type, name, (u_int32_t) vcn));
188 return (ENOENT);
189 }
190 /* Scan $ATTRIBUTE_LIST for requested attribute */
191 len = lvap->va_datalen;
884717e1 192 alpool = kmalloc(len, M_TEMP, M_WAITOK);
984263bc
MD
193 error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len,
194 NULL);
195 if (error)
196 goto out;
197
198 aalp = (struct attr_attrlist *) alpool;
199 nextaalp = NULL;
200
201 for(; len > 0; aalp = nextaalp) {
202 dprintf(("ntfs_ntvattrget: " \
203 "attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \
204 aalp->al_inumber, aalp->al_type, \
205 (u_int32_t) aalp->al_vcnstart));
206
207 if (len > aalp->reclen) {
208 nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *);
209 } else {
210 nextaalp = NULL;
211 }
212 len -= aalp->reclen;
213
214 if (!NTFS_AALPCMP(aalp, type, name, namelen) ||
215 (nextaalp && (nextaalp->al_vcnstart <= vcn) &&
216 NTFS_AALPCMP(nextaalp, type, name, namelen)))
217 continue;
218
219 dprintf(("ntfs_ntvattrget: attribute in ino: %d\n",
220 aalp->al_inumber));
221
222 /* this is not a main record, so we can't use just plain
223 vget() */
224 error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber,
225 NTFS_A_DATA, NULL, LK_EXCLUSIVE,
dadab5e9 226 VG_EXT, curthread, &newvp);
984263bc 227 if (error) {
086c1d7e 228 kprintf("ntfs_ntvattrget: CAN'T VGET INO: %d\n",
984263bc
MD
229 aalp->al_inumber);
230 goto out;
231 }
232 newip = VTONT(newvp);
233 /* XXX have to lock ntnode */
234 error = ntfs_findvattr(ntmp, newip, &lvap, vapp,
235 type, name, namelen, vcn);
236 vput(newvp);
237 if (error == 0)
238 goto out;
086c1d7e 239 kprintf("ntfs_ntvattrget: ATTRLIST ERROR.\n");
984263bc
MD
240 break;
241 }
242 error = ENOENT;
243
244 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \
f91a71dd 245 "ino: %"PRId64", type: 0x%x, name: %.*s, vcn: %d\n", \
984263bc
MD
246 ip->i_number, type, (int) namelen, name, (u_int32_t) vcn));
247out:
884717e1 248 kfree(alpool, M_TEMP);
984263bc
MD
249 return (error);
250}
251
252/*
253 * Read ntnode from disk, make ntvattr list.
254 *
255 * ntnode should be locked
256 */
257int
cd0a65a2 258ntfs_loadntnode(struct ntfsmount *ntmp, struct ntnode *ip)
984263bc
MD
259{
260 struct filerec *mfrp;
261 daddr_t bn;
262 int error,off;
263 struct attr *ap;
264 struct ntvattr *nvap;
265
f91a71dd 266 dprintf(("ntfs_loadntnode: loading ino: %"PRId64"\n",ip->i_number));
984263bc 267
884717e1 268 mfrp = kmalloc(ntfs_bntob(ntmp->ntm_bpmftrec), M_TEMP, M_WAITOK);
984263bc
MD
269
270 if (ip->i_number < NTFS_SYSNODESNUM) {
271 struct buf *bp;
272
273 dprintf(("ntfs_loadntnode: read system node\n"));
274
275 bn = ntfs_cntobn(ntmp->ntm_mftcn) +
276 ntmp->ntm_bpmftrec * ip->i_number;
277
278 error = bread(ntmp->ntm_devvp,
54078292 279 ntfs_bntodoff(bn), ntfs_bntob(ntmp->ntm_bpmftrec), &bp);
984263bc 280 if (error) {
086c1d7e 281 kprintf("ntfs_loadntnode: BREAD FAILED\n");
984263bc
MD
282 brelse(bp);
283 goto out;
284 }
285 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec));
286 bqrelse(bp);
287 } else {
288 struct vnode *vp;
289
290 vp = ntmp->ntm_sysvn[NTFS_MFTINO];
291 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
292 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec),
293 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL);
294 if (error) {
086c1d7e 295 kprintf("ntfs_loadntnode: ntfs_readattr failed\n");
984263bc
MD
296 goto out;
297 }
298 }
299
300 /* Check if magic and fixups are correct */
301 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp,
302 ntfs_bntob(ntmp->ntm_bpmftrec));
303 if (error) {
086c1d7e 304 kprintf("ntfs_loadntnode: BAD MFT RECORD %"PRId64"\n",
f91a71dd 305 ip->i_number);
984263bc
MD
306 goto out;
307 }
308
f91a71dd 309 dprintf(("ntfs_loadntnode: load attrs for ino: %"PRId64"\n",ip->i_number));
984263bc
MD
310 off = mfrp->fr_attroff;
311 ap = (struct attr *) ((caddr_t)mfrp + off);
312
313 LIST_INIT(&ip->i_valist);
314
315 while (ap->a_hdr.a_type != -1) {
316 error = ntfs_attrtontvattr(ntmp, &nvap, ap);
317 if (error)
318 break;
319 nvap->va_ip = ip;
320
321 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list);
322
323 off += ap->a_hdr.reclen;
324 ap = (struct attr *) ((caddr_t)mfrp + off);
325 }
326 if (error) {
086c1d7e 327 kprintf("ntfs_loadntnode: failed to load attr ino: %"PRId64"\n",
984263bc
MD
328 ip->i_number);
329 goto out;
330 }
331
332 ip->i_mainrec = mfrp->fr_mainrec;
333 ip->i_nlink = mfrp->fr_nlink;
334 ip->i_frflag = mfrp->fr_flags;
335
336 ip->i_flag |= IN_LOADED;
337
338out:
884717e1 339 kfree(mfrp, M_TEMP);
984263bc
MD
340 return (error);
341}
342
343/*
344 * Routine locks ntnode and increase usecount, just opposite of
345 * ntfs_ntput().
346 */
347int
cd0a65a2 348ntfs_ntget(struct ntnode *ip)
984263bc 349{
f91a71dd 350 dprintf(("ntfs_ntget: get ntnode %"PRId64": %p, usecount: %d\n",
984263bc
MD
351 ip->i_number, ip, ip->i_usecount));
352
41a01a4d 353 ip->i_usecount++; /* ZZZ */
056f4388 354 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE);
984263bc
MD
355
356 return 0;
357}
358
359/*
360 * Routine search ntnode in hash, if found: lock, inc usecount and return.
361 * If not in hash allocate structure for ntnode, prefill it, lock,
362 * inc count and return.
363 *
364 * ntnode returned locked
365 */
366int
cd0a65a2 367ntfs_ntlookup(struct ntfsmount *ntmp, ino_t ino, struct ntnode **ipp)
984263bc
MD
368{
369 struct ntnode *ip;
370
f3696fdb 371 dprintf(("ntfs_ntlookup: looking for ntnode %ju\n", (uintmax_t)ino));
984263bc
MD
372
373 do {
374 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) {
375 ntfs_ntget(ip);
f3696fdb
AHJ
376 dprintf(("ntfs_ntlookup: ntnode %ju: %p, usecount: %d\n",
377 (uintmax_t)ino, ip, ip->i_usecount));
984263bc
MD
378 *ipp = ip;
379 return (0);
380 }
056f4388 381 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL));
984263bc 382
884717e1 383 ip = kmalloc(sizeof(struct ntnode), M_NTFSNTNODE, M_WAITOK | M_ZERO);
984263bc 384 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip));
984263bc
MD
385
386 /* Generic initialization */
387 ip->i_devvp = ntmp->ntm_devvp;
388 ip->i_dev = ntmp->ntm_dev;
389 ip->i_number = ino;
390 ip->i_mp = ntmp;
391
392 LIST_INIT(&ip->i_fnlist);
597aea93 393 vref(ip->i_devvp);
984263bc
MD
394
395 /* init lock and lock the newborn ntnode */
f2770c70 396 lockinit(&ip->i_lock, "ntnode", 0, LK_EXCLUSIVE);
16523a43 397 spin_init(&ip->i_interlock);
984263bc
MD
398 ntfs_ntget(ip);
399
400 ntfs_nthashins(ip);
401
056f4388 402 LOCKMGR(&ntfs_hashlock, LK_RELEASE);
984263bc
MD
403
404 *ipp = ip;
405
f3696fdb
AHJ
406 dprintf(("ntfs_ntlookup: ntnode %ju: %p, usecount: %d\n",
407 (uintmax_t)ino, ip, ip->i_usecount));
984263bc
MD
408
409 return (0);
410}
411
412/*
413 * Decrement usecount of ntnode and unlock it, if usecount reach zero,
414 * deallocate ntnode.
415 *
416 * ntnode should be locked on entry, and unlocked on return.
417 */
418void
cd0a65a2 419ntfs_ntput(struct ntnode *ip)
984263bc
MD
420{
421 struct ntvattr *vap;
422
f91a71dd 423 dprintf(("ntfs_ntput: rele ntnode %"PRId64": %p, usecount: %d\n",
984263bc
MD
424 ip->i_number, ip, ip->i_usecount));
425
287a8577 426 spin_lock(&ip->i_interlock);
984263bc
MD
427 ip->i_usecount--;
428
429#ifdef DIAGNOSTIC
430 if (ip->i_usecount < 0) {
287a8577 431 spin_unlock(&ip->i_interlock);
ed20d0e3 432 panic("ntfs_ntput: ino: %"PRId64" usecount: %d ",
984263bc
MD
433 ip->i_number,ip->i_usecount);
434 }
435#endif
436
437 if (ip->i_usecount > 0) {
287a8577 438 spin_unlock(&ip->i_interlock);
056f4388 439 LOCKMGR(&ip->i_lock, LK_RELEASE);
984263bc
MD
440 return;
441 }
442
f91a71dd 443 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number));
984263bc 444
16523a43 445 if (ip->i_fnlist.lh_first) {
287a8577 446 spin_unlock(&ip->i_interlock);
ed20d0e3 447 panic("ntfs_ntput: ntnode has fnodes");
16523a43 448 }
984263bc 449
16523a43
MD
450 /*
451 * XXX this is a bit iffy because we are making high level calls
452 * while holding a spinlock.
453 */
984263bc
MD
454 ntfs_nthashrem(ip);
455
456 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) {
457 LIST_REMOVE(vap,va_list);
458 ntfs_freentvattr(vap);
459 }
287a8577 460 spin_unlock(&ip->i_interlock);
984263bc 461 vrele(ip->i_devvp);
884717e1 462 kfree(ip, M_NTFSNTNODE);
984263bc
MD
463}
464
465/*
466 * increment usecount of ntnode
467 */
468void
cd0a65a2 469ntfs_ntref(struct ntnode *ip)
984263bc 470{
984263bc 471 ip->i_usecount++;
984263bc 472
f91a71dd 473 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n",
984263bc
MD
474 ip->i_number, ip->i_usecount));
475
476}
477
478/*
479 * Decrement usecount of ntnode.
480 */
481void
cd0a65a2 482ntfs_ntrele(struct ntnode *ip)
984263bc 483{
f91a71dd 484 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n",
984263bc
MD
485 ip->i_number, ip, ip->i_usecount));
486
287a8577 487 spin_lock(&ip->i_interlock);
984263bc
MD
488 ip->i_usecount--;
489
535e8282 490 if (ip->i_usecount < 0) {
287a8577 491 spin_unlock(&ip->i_interlock);
ed20d0e3 492 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d ",
984263bc 493 ip->i_number,ip->i_usecount);
535e8282 494 }
287a8577 495 spin_unlock(&ip->i_interlock);
984263bc
MD
496}
497
498/*
499 * Deallocate all memory allocated for ntvattr
500 */
501void
cd0a65a2 502ntfs_freentvattr(struct ntvattr *vap)
984263bc
MD
503{
504 if (vap->va_flag & NTFS_AF_INRUN) {
505 if (vap->va_vruncn)
884717e1 506 kfree(vap->va_vruncn, M_NTFSRUN);
984263bc 507 if (vap->va_vruncl)
884717e1 508 kfree(vap->va_vruncl, M_NTFSRUN);
984263bc
MD
509 } else {
510 if (vap->va_datap)
884717e1 511 kfree(vap->va_datap, M_NTFSRDATA);
984263bc 512 }
884717e1 513 kfree(vap, M_NTFSNTVATTR);
984263bc
MD
514}
515
516/*
517 * Convert disk image of attribute into ntvattr structure,
518 * runs are expanded also.
519 */
520int
cd0a65a2
CP
521ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp,
522 struct attr *rap)
984263bc
MD
523{
524 int error, i;
525 struct ntvattr *vap;
526
527 error = 0;
528 *rvapp = NULL;
529
884717e1
SW
530 vap = kmalloc(sizeof(struct ntvattr), M_NTFSNTVATTR,
531 M_WAITOK | M_ZERO);
984263bc
MD
532 vap->va_ip = NULL;
533 vap->va_flag = rap->a_hdr.a_flag;
534 vap->va_type = rap->a_hdr.a_type;
535 vap->va_compression = rap->a_hdr.a_compression;
536 vap->va_index = rap->a_hdr.a_index;
537
538 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index));
539
540 vap->va_namelen = rap->a_hdr.a_namelen;
541 if (rap->a_hdr.a_namelen) {
542 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff);
543 ddprintf((", name:["));
544 for (i = 0; i < vap->va_namelen; i++) {
545 vap->va_name[i] = unp[i];
546 ddprintf(("%c", vap->va_name[i]));
547 }
548 ddprintf(("]"));
549 }
550 if (vap->va_flag & NTFS_AF_INRUN) {
551 ddprintf((", nonres."));
552 vap->va_datalen = rap->a_nr.a_datalen;
553 vap->va_allocated = rap->a_nr.a_allocated;
554 vap->va_vcnstart = rap->a_nr.a_vcnstart;
555 vap->va_vcnend = rap->a_nr.a_vcnend;
556 vap->va_compressalg = rap->a_nr.a_compressalg;
557 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl),
558 &(vap->va_vruncnt),
559 (caddr_t) rap + rap->a_nr.a_dataoff);
560 } else {
561 vap->va_compressalg = 0;
562 ddprintf((", res."));
563 vap->va_datalen = rap->a_r.a_datalen;
564 vap->va_allocated = rap->a_r.a_datalen;
565 vap->va_vcnstart = 0;
566 vap->va_vcnend = ntfs_btocn(vap->va_allocated);
884717e1
SW
567 vap->va_datap = kmalloc(vap->va_datalen, M_NTFSRDATA,
568 M_WAITOK);
984263bc
MD
569 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff,
570 rap->a_r.a_datalen);
571 }
572 ddprintf((", len: %d", vap->va_datalen));
573
574 if (error)
884717e1 575 kfree(vap, M_NTFSNTVATTR);
984263bc
MD
576 else
577 *rvapp = vap;
578
579 ddprintf(("\n"));
580
581 return (error);
582}
583
584/*
585 * Expand run into more utilizable and more memory eating format.
586 */
587int
cd0a65a2 588ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run)
984263bc
MD
589{
590 u_int32_t off;
591 u_int32_t sz, i;
592 cn_t *cn;
593 cn_t *cl;
594 u_long cnt;
595 cn_t prev;
596 cn_t tmp;
597
598 off = 0;
599 cnt = 0;
600 i = 0;
601 while (run[off]) {
602 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1;
603 cnt++;
604 }
884717e1
SW
605 cn = kmalloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
606 cl = kmalloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
984263bc
MD
607
608 off = 0;
609 cnt = 0;
610 prev = 0;
611 while (run[off]) {
612
613 sz = run[off++];
614 cl[cnt] = 0;
615
616 for (i = 0; i < (sz & 0xF); i++)
617 cl[cnt] += (u_int32_t) run[off++] << (i << 3);
618
619 sz >>= 4;
620 if (run[off + sz - 1] & 0x80) {
621 tmp = ((u_int64_t) - 1) << (sz << 3);
622 for (i = 0; i < sz; i++)
623 tmp |= (u_int64_t) run[off++] << (i << 3);
624 } else {
625 tmp = 0;
626 for (i = 0; i < sz; i++)
627 tmp |= (u_int64_t) run[off++] << (i << 3);
628 }
629 if (tmp)
630 prev = cn[cnt] = prev + tmp;
631 else
632 cn[cnt] = tmp;
633
634 cnt++;
635 }
636 *rcnp = cn;
637 *rclp = cl;
638 *rcntp = cnt;
639 return (0);
640}
641
642/*
643 * Compare unicode and ascii string case insens.
644 */
645static int
cd0a65a2
CP
646ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen,
647 const char *astr, size_t astrlen)
984263bc 648{
23731001
AP
649 int len;
650 size_t i, j, mbstrlen = astrlen;
651 int res;
652 wchar wc;
653
654 if (ntmp->ntm_ic_l2u) {
655 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++, j++) {
656 if (j < astrlen -1) {
657 wc = (wchar)astr[j]<<8 | (astr[j+1]&0xFF);
658 len = 2;
659 } else {
660 wc = (wchar)astr[j]<<8 & 0xFF00;
661 len = 1;
662 }
663 res = ((int) NTFS_TOUPPER(ustr[i])) -
664 ((int)NTFS_TOUPPER(NTFS_82U(wc, &len)));
665 j += len - 1;
666 mbstrlen -= len - 1;
984263bc 667
23731001
AP
668 if (res)
669 return res;
670 }
671 } else {
672 /*
673 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode
674 * symbols not covered by translation table
675 */
676 for (i = 0; i < ustrlen && i < astrlen; i++) {
677 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) -
678 ((int)NTFS_TOUPPER(NTFS_82U((wchar)astr[i], &len)));
679 if (res)
680 return res;
681 }
984263bc 682 }
23731001 683 return (ustrlen - mbstrlen);
984263bc
MD
684}
685
686/*
687 * Compare unicode and ascii string case sens.
688 */
689static int
cd0a65a2
CP
690ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen,
691 const char *astr, size_t astrlen)
984263bc 692{
23731001
AP
693 char u, l;
694 size_t i, j, mbstrlen = astrlen;
695 int res;
696 wchar wc;
697
698 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, j++) {
699 res = 0;
700 wc = NTFS_U28(ustr[i]);
701 u = (char)(wc>>8);
702 l = (char)wc;
703 if (u != '\0' && j < astrlen -1) {
704 res = (int) (u - astr[j++]);
705 mbstrlen--;
706 }
707 res = (res<<8) + (int) (l - astr[j]);
984263bc
MD
708 if (res)
709 return res;
710 }
23731001 711 return (ustrlen - mbstrlen);
984263bc
MD
712}
713
714/*
715 * Search fnode in ntnode, if not found allocate and preinitialize.
716 *
717 * ntnode should be locked on entry.
718 */
719int
cd0a65a2
CP
720ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype,
721 char *attrname, struct fnode **fpp)
984263bc
MD
722{
723 struct fnode *fp;
724
f91a71dd 725 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n",
984263bc
MD
726 ip->i_number,attrtype, attrname?attrname:""));
727 *fpp = NULL;
728 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){
729 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n",
730 fp->f_attrtype, fp->f_attrname?fp->f_attrname:""));
731
732 if ((attrtype == fp->f_attrtype) &&
733 ((!attrname && !fp->f_attrname) ||
734 (attrname && fp->f_attrname &&
735 !strcmp(attrname,fp->f_attrname)))){
736 dprintf(("ntfs_fget: found existed: %p\n",fp));
737 *fpp = fp;
738 }
739 }
740
741 if (*fpp)
742 return (0);
743
884717e1 744 fp = kmalloc(sizeof(struct fnode), M_NTFSFNODE, M_WAITOK | M_ZERO);
984263bc
MD
745 dprintf(("ntfs_fget: allocating fnode: %p\n",fp));
746
747 fp->f_ip = ip;
748 if (attrname) {
749 fp->f_flag |= FN_AATTRNAME;
884717e1
SW
750 fp->f_attrname = kmalloc(strlen(attrname) + 1, M_TEMP,
751 M_WAITOK);
984263bc
MD
752 strcpy(fp->f_attrname, attrname);
753 } else
754 fp->f_attrname = NULL;
755 fp->f_attrtype = attrtype;
756
757 ntfs_ntref(ip);
758
759 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist);
760
761 *fpp = fp;
762
763 return (0);
764}
765
766/*
767 * Deallocate fnode, remove it from ntnode's fnode list.
768 *
769 * ntnode should be locked.
770 */
771void
cd0a65a2 772ntfs_frele(struct fnode *fp)
984263bc
MD
773{
774 struct ntnode *ip = FTONT(fp);
775
f91a71dd 776 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip));
984263bc
MD
777
778 dprintf(("ntfs_frele: deallocating fnode\n"));
779 LIST_REMOVE(fp,f_fnlist);
780 if (fp->f_flag & FN_AATTRNAME)
884717e1 781 kfree(fp->f_attrname, M_TEMP);
984263bc 782 if (fp->f_dirblbuf)
884717e1
SW
783 kfree(fp->f_dirblbuf, M_NTFSDIR);
784 kfree(fp, M_NTFSFNODE);
984263bc
MD
785 ntfs_ntrele(ip);
786}
787
788/*
789 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME],
790 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs.
791 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed.
792 */
793static int
cd0a65a2
CP
794ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen,
795 int *attrtype, char **attrname)
984263bc
MD
796{
797 const char *sys;
798 size_t syslen, i;
799 struct ntvattrdef *adp;
800
801 if (namelen == 0)
802 return (0);
803
804 if (name[0] == '$') {
805 sys = name;
806 for (syslen = 0; syslen < namelen; syslen++) {
807 if(sys[syslen] == ':') {
808 name++;
809 namelen--;
810 break;
811 }
812 }
813 name += syslen;
814 namelen -= syslen;
815
816 adp = ntmp->ntm_ad;
817 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){
818 if (syslen != adp->ad_namelen ||
819 strncmp(sys, adp->ad_name, syslen) != 0)
820 continue;
821
822 *attrtype = adp->ad_type;
823 goto out;
824 }
825 return (ENOENT);
826 } else
827 *attrtype = NTFS_A_DATA;
828
829 out:
830 if (namelen) {
884717e1 831 (*attrname) = kmalloc(namelen, M_TEMP, M_WAITOK);
984263bc
MD
832 memcpy((*attrname), name, namelen);
833 (*attrname)[namelen] = '\0';
834 }
835
836 return (0);
837}
838
839/*
840 * Lookup specifed node for filename, matching cnp,
841 * return fnode filled.
842 */
843int
cd0a65a2 844ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp,
23731001 845 struct componentname *cnp, struct vnode **vpp)
984263bc
MD
846{
847 struct fnode *fp = VTOF(vp);
848 struct ntnode *ip = FTONT(fp);
849 struct ntvattr *vap; /* Root attribute */
850 cn_t cn; /* VCN in current attribute */
851 caddr_t rdbuf; /* Buffer to read directory's blocks */
852 u_int32_t blsize;
853 u_int32_t rdsize; /* Length of data to read from current block */
854 struct attr_indexentry *iep;
855 int error, res, anamelen, fnamelen;
856 const char *fname,*aname;
857 u_int32_t aoff;
858 int attrtype = NTFS_A_DATA;
859 char *attrname = NULL;
860 struct fnode *nfp;
861 struct vnode *nvp;
862 enum vtype f_type;
863
864 error = ntfs_ntget(ip);
865 if (error)
866 return (error);
867
868 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
869 if (error || (vap->va_flag & NTFS_AF_INRUN))
870 return (ENOTDIR);
871
872 blsize = vap->va_a_iroot->ir_size;
873 rdsize = vap->va_datalen;
874
875 /*
876 * Divide file name into: foofilefoofilefoofile[:attrspec]
877 * Store like this: fname:fnamelen [aname:anamelen]
878 */
879 fname = cnp->cn_nameptr;
880 aname = NULL;
881 anamelen = 0;
882 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++)
883 if(fname[fnamelen] == ':') {
884 aname = fname + fnamelen + 1;
885 anamelen = cnp->cn_namelen - fnamelen - 1;
886 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n",
887 fname, fnamelen, aname, anamelen));
888 break;
889 }
890
891 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize));
892
884717e1 893 rdbuf = kmalloc(blsize, M_TEMP, M_WAITOK);
984263bc
MD
894
895 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30",
896 0, rdsize, rdbuf, NULL);
897 if (error)
898 goto fail;
899
900 aoff = sizeof(struct attr_indexroot);
901
902 do {
903 iep = (struct attr_indexentry *) (rdbuf + aoff);
904
905 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
906 aoff += iep->reclen,
907 iep = (struct attr_indexentry *) (rdbuf + aoff))
908 {
909 ddprintf(("scan: %d, %d\n",
910 (u_int32_t) iep->ie_number,
911 (u_int32_t) iep->ie_fnametype));
912
913 /* check the name - the case-insensitible check
914 * has to come first, to break from this for loop
915 * if needed, so we can dive correctly */
916 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen,
917 fname, fnamelen);
918 if (res > 0) break;
919 if (res < 0) continue;
920
921 if (iep->ie_fnametype == 0 ||
922 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS))
923 {
924 res = NTFS_UASTRCMP(iep->ie_fname,
925 iep->ie_fnamelen, fname, fnamelen);
926 if (res != 0) continue;
927 }
928
929 if (aname) {
930 error = ntfs_ntlookupattr(ntmp,
931 aname, anamelen,
932 &attrtype, &attrname);
933 if (error)
934 goto fail;
935 }
936
937 /* Check if we've found ourself */
938 if ((iep->ie_number == ip->i_number) &&
939 (attrtype == fp->f_attrtype) &&
940 ((!attrname && !fp->f_attrname) ||
941 (attrname && fp->f_attrname &&
942 !strcmp(attrname, fp->f_attrname))))
943 {
597aea93 944 vref(vp);
984263bc
MD
945 *vpp = vp;
946 error = 0;
947 goto fail;
948 }
949
950 /* vget node, but don't load it */
951 error = ntfs_vgetex(ntmp->ntm_mountp,
952 iep->ie_number, attrtype, attrname,
953 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN,
dadab5e9 954 curthread, &nvp);
984263bc
MD
955
956 /* free the buffer returned by ntfs_ntlookupattr() */
957 if (attrname) {
884717e1 958 kfree(attrname, M_TEMP);
984263bc
MD
959 attrname = NULL;
960 }
961
962 if (error)
963 goto fail;
964
965 nfp = VTOF(nvp);
966
967 if (nfp->f_flag & FN_VALID) {
968 *vpp = nvp;
969 goto fail;
970 }
971
972 nfp->f_fflag = iep->ie_fflag;
973 nfp->f_pnumber = iep->ie_fpnumber;
974 nfp->f_times = iep->ie_ftimes;
975
976 if((nfp->f_fflag & NTFS_FFLAG_DIR) &&
977 (nfp->f_attrtype == NTFS_A_DATA) &&
978 (nfp->f_attrname == NULL))
979 f_type = VDIR;
980 else
981 f_type = VREG;
982
983 nvp->v_type = f_type;
984
985 if ((nfp->f_attrtype == NTFS_A_DATA) &&
986 (nfp->f_attrname == NULL))
987 {
988 /* Opening default attribute */
989 nfp->f_size = iep->ie_fsize;
990 nfp->f_allocated = iep->ie_fallocated;
991 nfp->f_flag |= FN_PRELOADED;
992 } else {
993 error = ntfs_filesize(ntmp, nfp,
994 &nfp->f_size, &nfp->f_allocated);
995 if (error) {
996 vput(nvp);
997 goto fail;
998 }
999 }
984263bc 1000 nfp->f_flag &= ~FN_VALID;
61c6a8a9
MD
1001
1002 /*
1003 * Normal files use the buffer cache
1004 */
1005 if (nvp->v_type == VREG)
b0d18f7d 1006 vinitvmio(nvp, nfp->f_size, PAGE_SIZE, -1);
984263bc
MD
1007 *vpp = nvp;
1008 goto fail;
1009 }
1010
1011 /* Dive if possible */
1012 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) {
1013 dprintf(("ntfs_ntlookupfile: diving\n"));
1014
1015 cn = *(cn_t *) (rdbuf + aoff +
1016 iep->reclen - sizeof(cn_t));
1017 rdsize = blsize;
1018
1019 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30",
1020 ntfs_cntob(cn), rdsize, rdbuf, NULL);
1021 if (error)
1022 goto fail;
1023
1024 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
1025 rdbuf, rdsize);
1026 if (error)
1027 goto fail;
1028
1029 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize +
1030 0x18);
1031 } else {
1032 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n"));
1033 error = ENOENT;
1034 break;
1035 }
1036 } while (1);
1037
1038 dprintf(("finish\n"));
1039
1040fail:
884717e1 1041 if (attrname) kfree(attrname, M_TEMP);
984263bc
MD
1042 ntfs_ntvattrrele(vap);
1043 ntfs_ntput(ip);
884717e1 1044 kfree(rdbuf, M_TEMP);
984263bc
MD
1045 return (error);
1046}
1047
1048/*
1049 * Check if name type is permitted to show.
1050 */
1051int
cd0a65a2 1052ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep)
984263bc
MD
1053{
1054 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)
1055 return 1;
1056
1057 switch (iep->ie_fnametype) {
1058 case 2:
dff43ec9 1059 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n"));
984263bc
MD
1060 return 0;
1061 case 0: case 1: case 3:
1062 return 1;
1063 default:
086c1d7e 1064 kprintf("ntfs_isnamepermitted: " \
984263bc
MD
1065 "WARNING! Unknown file name type: %d\n",
1066 iep->ie_fnametype);
1067 break;
1068 }
1069 return 0;
1070}
1071
1072/*
1073 * Read ntfs dir like stream of attr_indexentry, not like btree of them.
1074 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them.
1075 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in
1076 * fnode, so we can skip toward record number num almost immediatly.
1077 * Anyway this is rather slow routine. The problem is that we don't know
1078 * how many records are there in $INDEX_ALLOCATION:$I30 block.
1079 */
1080int
cd0a65a2
CP
1081ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp,
1082 u_int32_t num, struct attr_indexentry **riepp)
984263bc
MD
1083{
1084 struct ntnode *ip = FTONT(fp);
1085 struct ntvattr *vap = NULL; /* IndexRoot attribute */
1086 struct ntvattr *bmvap = NULL; /* BitMap attribute */
1087 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */
1088 caddr_t rdbuf; /* Buffer to read directory's blocks */
1089 u_char *bmp = NULL; /* Bitmap */
1090 u_int32_t blsize; /* Index allocation size (2048) */
1091 u_int32_t rdsize; /* Length of data to read */
1092 u_int32_t attrnum; /* Current attribute type */
1093 u_int32_t cpbl = 1; /* Clusters per directory block */
1094 u_int32_t blnum;
1095 struct attr_indexentry *iep;
1096 int error = ENOENT;
1097 u_int32_t aoff, cnum;
1098
f91a71dd 1099 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num));
984263bc
MD
1100 error = ntfs_ntget(ip);
1101 if (error)
1102 return (error);
1103
1104 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
1105 if (error)
1106 return (ENOTDIR);
1107
1108 if (fp->f_dirblbuf == NULL) {
1109 fp->f_dirblsz = vap->va_a_iroot->ir_size;
884717e1
SW
1110 fp->f_dirblbuf = kmalloc(max(vap->va_datalen, fp->f_dirblsz),
1111 M_NTFSDIR, M_WAITOK);
984263bc
MD
1112 }
1113
1114 blsize = fp->f_dirblsz;
1115 rdbuf = fp->f_dirblbuf;
1116
1117 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize));
1118
1119 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) {
1120 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30",
1121 0, &bmvap);
1122 if (error) {
1123 error = ENOTDIR;
1124 goto fail;
1125 }
884717e1 1126 bmp = kmalloc(bmvap->va_datalen, M_TEMP, M_WAITOK);
984263bc
MD
1127 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0,
1128 bmvap->va_datalen, bmp, NULL);
1129 if (error)
1130 goto fail;
1131
1132 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30",
1133 0, &iavap);
1134 if (error) {
1135 error = ENOTDIR;
1136 goto fail;
1137 }
1138 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1);
1139 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n",
1140 iavap->va_datalen, cpbl));
1141 } else {
1142 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n"));
1143 iavap = bmvap = NULL;
1144 bmp = NULL;
1145 }
1146
1147 /* Try use previous values */
1148 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) {
1149 attrnum = fp->f_lastdattr;
1150 aoff = fp->f_lastdoff;
1151 blnum = fp->f_lastdblnum;
1152 cnum = fp->f_lastdnum;
1153 } else {
1154 attrnum = NTFS_A_INDXROOT;
1155 aoff = sizeof(struct attr_indexroot);
1156 blnum = 0;
1157 cnum = 0;
1158 }
1159
1160 do {
1161 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n",
39215f4c 1162 attrnum, blnum, cnum, num, aoff));
984263bc
MD
1163 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize;
1164 error = ntfs_readattr(ntmp, ip, attrnum, "$I30",
1165 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL);
1166 if (error)
1167 goto fail;
1168
1169 if (attrnum == NTFS_A_INDX) {
1170 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
1171 rdbuf, rdsize);
1172 if (error)
1173 goto fail;
1174 }
1175 if (aoff == 0)
1176 aoff = (attrnum == NTFS_A_INDX) ?
1177 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) :
1178 sizeof(struct attr_indexroot);
1179
1180 iep = (struct attr_indexentry *) (rdbuf + aoff);
1181 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
1182 aoff += iep->reclen,
1183 iep = (struct attr_indexentry *) (rdbuf + aoff))
1184 {
1185 if (!ntfs_isnamepermitted(ntmp, iep)) continue;
1186
1187 if (cnum >= num) {
1188 fp->f_lastdnum = cnum;
1189 fp->f_lastdoff = aoff;
1190 fp->f_lastdblnum = blnum;
1191 fp->f_lastdattr = attrnum;
1192
1193 *riepp = iep;
1194
1195 error = 0;
1196 goto fail;
1197 }
1198 cnum++;
1199 }
1200
1201 if (iavap) {
1202 if (attrnum == NTFS_A_INDXROOT)
1203 blnum = 0;
1204 else
1205 blnum++;
1206
1207 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) {
1208 if (bmp[blnum >> 3] & (1 << (blnum & 3)))
1209 break;
1210 blnum++;
1211 }
1212
1213 attrnum = NTFS_A_INDX;
1214 aoff = 0;
1215 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen)
1216 break;
39215f4c 1217 dprintf(("ntfs_ntreaddir: blnum: %d\n", blnum));
984263bc
MD
1218 }
1219 } while (iavap);
1220
1221 *riepp = NULL;
1222 fp->f_lastdnum = 0;
1223
1224fail:
1225 if (vap)
1226 ntfs_ntvattrrele(vap);
1227 if (bmvap)
1228 ntfs_ntvattrrele(bmvap);
1229 if (iavap)
1230 ntfs_ntvattrrele(iavap);
1231 if (bmp)
884717e1 1232 kfree(bmp, M_TEMP);
984263bc
MD
1233 ntfs_ntput(ip);
1234 return (error);
1235}
1236
1237/*
1238 * Convert NTFS times that are in 100 ns units and begins from
1239 * 1601 Jan 1 into unix times.
1240 */
1241struct timespec
cd0a65a2 1242ntfs_nttimetounix(u_int64_t nt)
984263bc
MD
1243{
1244 struct timespec t;
1245
1246 /* WindowNT times are in 100 ns and from 1601 Jan 1 */
1247 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100;
1248 t.tv_sec = nt / (1000 * 1000 * 10) -
1249 369LL * 365LL * 24LL * 60LL * 60LL -
1250 89LL * 1LL * 24LL * 60LL * 60LL;
1251 return (t);
1252}
1253
1254/*
1255 * Get file times from NTFS_A_NAME attribute.
1256 */
1257int
cd0a65a2 1258ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm)
984263bc
MD
1259{
1260 struct ntvattr *vap;
1261 int error;
1262
f91a71dd 1263 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number));
984263bc
MD
1264
1265 error = ntfs_ntget(ip);
1266 if (error)
1267 return (error);
1268
1269 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap);
1270 if (error) {
1271 ntfs_ntput(ip);
1272 return (error);
1273 }
1274 *tm = vap->va_a_name->n_times;
1275 ntfs_ntvattrrele(vap);
1276 ntfs_ntput(ip);
1277
1278 return (0);
1279}
1280
1281/*
1282 * Get file sizes from corresponding attribute.
1283 *
1284 * ntnode under fnode should be locked.
1285 */
1286int
cd0a65a2
CP
1287ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size,
1288 u_int64_t *bytes)
984263bc
MD
1289{
1290 struct ntvattr *vap;
1291 struct ntnode *ip = FTONT(fp);
1292 u_int64_t sz, bn;
1293 int error;
1294
f91a71dd 1295 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number));
984263bc
MD
1296
1297 error = ntfs_ntvattrget(ntmp, ip,
1298 fp->f_attrtype, fp->f_attrname, 0, &vap);
1299 if (error)
1300 return (error);
1301
1302 bn = vap->va_allocated;
1303 sz = vap->va_datalen;
1304
1305 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n",
1306 (u_int32_t) sz, (u_int32_t) bn));
1307
1308 if (size)
1309 *size = sz;
1310 if (bytes)
1311 *bytes = bn;
1312
1313 ntfs_ntvattrrele(vap);
1314
1315 return (0);
1316}
1317
1318/*
1319 * This is one of write routine.
1320 */
1321int
cd0a65a2
CP
1322ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1323 u_int32_t attrnum, char *attrname, off_t roff,
1324 size_t rsize, void *rdata, size_t *initp,
1325 struct uio *uio)
984263bc
MD
1326{
1327 size_t init;
1328 int error = 0;
1329 off_t off = roff, left = rsize, towrite;
1330 caddr_t data = rdata;
1331 struct ntvattr *vap;
1332 *initp = 0;
1333
1334 while (left) {
1335 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
1336 ntfs_btocn(off), &vap);
1337 if (error)
1338 return (error);
1339 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
1340 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n",
1341 (u_int32_t) off, (u_int32_t) towrite,
1342 (u_int32_t) vap->va_vcnstart,
1343 (u_int32_t) vap->va_vcnend));
1344 error = ntfs_writentvattr_plain(ntmp, ip, vap,
1345 off - ntfs_cntob(vap->va_vcnstart),
1346 towrite, data, &init, uio);
1347 if (error) {
086c1d7e 1348 kprintf("ntfs_writeattr_plain: " \
984263bc
MD
1349 "ntfs_writentvattr_plain failed: o: %d, s: %d\n",
1350 (u_int32_t) off, (u_int32_t) towrite);
086c1d7e 1351 kprintf("ntfs_writeattr_plain: attrib: %d - %d\n",
984263bc
MD
1352 (u_int32_t) vap->va_vcnstart,
1353 (u_int32_t) vap->va_vcnend);
1354 ntfs_ntvattrrele(vap);
1355 break;
1356 }
1357 ntfs_ntvattrrele(vap);
1358 left -= towrite;
1359 off += towrite;
1360 data = data + towrite;
1361 *initp += init;
1362 }
1363
1364 return (error);
1365}
1366
1367/*
1368 * This is one of write routine.
1369 *
1370 * ntnode should be locked.
1371 */
1372int
cd0a65a2
CP
1373ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1374 struct ntvattr *vap, off_t roff, size_t rsize,
1375 void *rdata, size_t *initp, struct uio *uio)
984263bc
MD
1376{
1377 int error = 0;
1378 int off;
1379 int cnt;
1380 cn_t ccn, ccl, cn, left, cl;
1381 caddr_t data = rdata;
1382 struct buf *bp;
1383 size_t tocopy;
1384
1385 *initp = 0;
1386
1387 if ((vap->va_flag & NTFS_AF_INRUN) == 0) {
086c1d7e 1388 kprintf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n");
984263bc
MD
1389 return ENOTTY;
1390 }
1391
1392 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n",
1393 vap->va_vruncnt));
1394
1395 off = roff;
1396 left = rsize;
1397 ccl = 0;
1398 ccn = 0;
1399 cnt = 0;
1400 for (; left && (cnt < vap->va_vruncnt); cnt++) {
1401 ccn = vap->va_vruncn[cnt];
1402 ccl = vap->va_vruncl[cnt];
1403
1404 ddprintf(("ntfs_writentvattr_plain: " \
1405 "left %d, cn: 0x%x, cl: %d, off: %d\n", \
1406 (u_int32_t) left, (u_int32_t) ccn, \
1407 (u_int32_t) ccl, (u_int32_t) off));
1408
1409 if (ntfs_cntob(ccl) < off) {
1410 off -= ntfs_cntob(ccl);
1411 cnt++;
1412 continue;
1413 }
1414 if (!ccn && ip->i_number != NTFS_BOOTINO)
1415 continue; /* XXX */
1416
1417 ccl -= ntfs_btocn(off);
1418 cn = ccn + ntfs_btocn(off);
1419 off = ntfs_btocnoff(off);
1420
1421 while (left && ccl) {
08c23b99 1422#if defined(__DragonFly__)
984263bc
MD
1423 tocopy = min(left,
1424 min(ntfs_cntob(ccl) - off, MAXBSIZE - off));
1425#else
1426 /* under NetBSD, bread() can read
1427 * maximum one block worth of data */
1428 tocopy = min(left, ntmp->ntm_bps - off);
1429#endif
1430 cl = ntfs_btocl(tocopy + off);
1431 ddprintf(("ntfs_writentvattr_plain: write: " \
1432 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n",
1433 (u_int32_t) cn, (u_int32_t) cl,
1434 (u_int32_t) off, (u_int32_t) tocopy,
1435 (u_int32_t) left));
8aa7625b
MD
1436 if (off == 0 && tocopy == ntfs_cntob(cl) &&
1437 uio->uio_segflg != UIO_NOCOPY) {
54078292 1438 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn),
984263bc
MD
1439 ntfs_cntob(cl), 0, 0);
1440 clrbuf(bp);
1441 } else {
54078292
MD
1442 error = bread(ntmp->ntm_devvp,
1443 ntfs_cntodoff(cn),
3b568787 1444 ntfs_cntob(cl), &bp);
984263bc
MD
1445 if (error) {
1446 brelse(bp);
1447 return (error);
1448 }
1449 }
1450 if (uio)
44480e31 1451 uiomovebp(bp, bp->b_data + off, tocopy, uio);
984263bc
MD
1452 else
1453 memcpy(bp->b_data + off, data, tocopy);
1454 bawrite(bp);
1455 data = data + tocopy;
1456 *initp += tocopy;
1457 off = 0;
1458 left -= tocopy;
1459 cn += cl;
1460 ccl -= cl;
1461 }
1462 }
1463
1464 if (left) {
086c1d7e 1465 kprintf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n");
984263bc
MD
1466 error = EINVAL;
1467 }
1468
1469 return (error);
1470}
1471
1472/*
1473 * This is one of read routines.
1474 *
1475 * ntnode should be locked.
1476 */
1477int
cd0a65a2
CP
1478ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1479 struct ntvattr *vap, off_t roff, size_t rsize,
1480 void *rdata, size_t *initp, struct uio *uio)
984263bc
MD
1481{
1482 int error = 0;
1483 int off;
1484
1485 *initp = 0;
1486 if (vap->va_flag & NTFS_AF_INRUN) {
1487 int cnt;
1488 cn_t ccn, ccl, cn, left, cl;
1489 caddr_t data = rdata;
1490 struct buf *bp;
1491 size_t tocopy;
1492
1493 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n",
1494 vap->va_vruncnt));
1495
1496 off = roff;
1497 left = rsize;
1498 ccl = 0;
1499 ccn = 0;
1500 cnt = 0;
1501 while (left && (cnt < vap->va_vruncnt)) {
1502 ccn = vap->va_vruncn[cnt];
1503 ccl = vap->va_vruncl[cnt];
1504
1505 ddprintf(("ntfs_readntvattr_plain: " \
1506 "left %d, cn: 0x%x, cl: %d, off: %d\n", \
1507 (u_int32_t) left, (u_int32_t) ccn, \
1508 (u_int32_t) ccl, (u_int32_t) off));
1509
1510 if (ntfs_cntob(ccl) < off) {
1511 off -= ntfs_cntob(ccl);
1512 cnt++;
1513 continue;
1514 }
1515 if (ccn || ip->i_number == NTFS_BOOTINO) {
1516 ccl -= ntfs_btocn(off);
1517 cn = ccn + ntfs_btocn(off);
1518 off = ntfs_btocnoff(off);
1519
1520 while (left && ccl) {
08c23b99 1521#if defined(__DragonFly__)
984263bc
MD
1522 tocopy = min(left,
1523 min(ntfs_cntob(ccl) - off,
1524 MAXBSIZE - off));
1525#else
1526 /* under NetBSD, bread() can read
1527 * maximum one block worth of data */
1528 tocopy = min(left,
1529 ntmp->ntm_bps - off);
1530#endif
1531 cl = ntfs_btocl(tocopy + off);
1532 ddprintf(("ntfs_readntvattr_plain: " \
1533 "read: cn: 0x%x cl: %d, " \
1534 "off: %d len: %d, left: %d\n",
1535 (u_int32_t) cn,
1536 (u_int32_t) cl,
1537 (u_int32_t) off,
1538 (u_int32_t) tocopy,
1539 (u_int32_t) left));
1540 error = bread(ntmp->ntm_devvp,
54078292 1541 ntfs_cntodoff(cn),
984263bc 1542 ntfs_cntob(cl),
3b568787 1543 &bp);
984263bc
MD
1544 if (error) {
1545 brelse(bp);
1546 return (error);
1547 }
1548 if (uio) {
44480e31 1549 uiomovebp(bp, bp->b_data + off,
984263bc
MD
1550 tocopy, uio);
1551 } else {
1552 memcpy(data, bp->b_data + off,
1553 tocopy);
1554 }
1555 brelse(bp);
1556 data = data + tocopy;
1557 *initp += tocopy;
1558 off = 0;
1559 left -= tocopy;
1560 cn += cl;
1561 ccl -= cl;
1562 }
1563 } else {
1564 tocopy = min(left, ntfs_cntob(ccl) - off);
1565 ddprintf(("ntfs_readntvattr_plain: "
1566 "hole: ccn: 0x%x ccl: %d, off: %d, " \
1567 " len: %d, left: %d\n",
1568 (u_int32_t) ccn, (u_int32_t) ccl,
1569 (u_int32_t) off, (u_int32_t) tocopy,
1570 (u_int32_t) left));
1571 left -= tocopy;
1572 off = 0;
1573 if (uio) {
1574 size_t remains = tocopy;
1575 for(; remains; remains++)
1576 uiomove("", 1, uio);
1577 } else
1578 bzero(data, tocopy);
1579 data = data + tocopy;
1580 }
1581 cnt++;
1582 }
1583 if (left) {
086c1d7e 1584 kprintf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n");
984263bc
MD
1585 error = E2BIG;
1586 }
1587 } else {
1588 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n"));
1589 if (uio)
1590 uiomove(vap->va_datap + roff, rsize, uio);
1591 else
1592 memcpy(rdata, vap->va_datap + roff, rsize);
1593 *initp += rsize;
1594 }
1595
1596 return (error);
1597}
1598
1599/*
1600 * This is one of read routines.
1601 */
1602int
cd0a65a2
CP
1603ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1604 u_int32_t attrnum, char *attrname, off_t roff,
1605 size_t rsize, void *rdata, size_t * initp,
1606 struct uio *uio)
984263bc
MD
1607{
1608 size_t init;
1609 int error = 0;
1610 off_t off = roff, left = rsize, toread;
1611 caddr_t data = rdata;
1612 struct ntvattr *vap;
1613 *initp = 0;
1614
1615 while (left) {
1616 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
1617 ntfs_btocn(off), &vap);
1618 if (error)
1619 return (error);
1620 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
1621 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n",
1622 (u_int32_t) off, (u_int32_t) toread,
1623 (u_int32_t) vap->va_vcnstart,
1624 (u_int32_t) vap->va_vcnend));
1625 error = ntfs_readntvattr_plain(ntmp, ip, vap,
1626 off - ntfs_cntob(vap->va_vcnstart),
1627 toread, data, &init, uio);
1628 if (error) {
086c1d7e 1629 kprintf("ntfs_readattr_plain: " \
984263bc
MD
1630 "ntfs_readntvattr_plain failed: o: %d, s: %d\n",
1631 (u_int32_t) off, (u_int32_t) toread);
086c1d7e 1632 kprintf("ntfs_readattr_plain: attrib: %d - %d\n",
984263bc
MD
1633 (u_int32_t) vap->va_vcnstart,
1634 (u_int32_t) vap->va_vcnend);
1635 ntfs_ntvattrrele(vap);
1636 break;
1637 }
1638 ntfs_ntvattrrele(vap);
1639 left -= toread;
1640 off += toread;
1641 data = data + toread;
1642 *initp += init;
1643 }
1644
1645 return (error);
1646}
1647
1648/*
1649 * This is one of read routines.
1650 */
1651int
cd0a65a2
CP
1652ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum,
1653 char *attrname, off_t roff, size_t rsize, void *rdata,
1654 struct uio *uio)
984263bc
MD
1655{
1656 int error = 0;
1657 struct ntvattr *vap;
1658 size_t init;
1659
f91a71dd 1660 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n",
984263bc
MD
1661 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize));
1662
1663 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap);
1664 if (error)
1665 return (error);
1666
1667 if ((roff > vap->va_datalen) ||
1668 (roff + rsize > vap->va_datalen)) {
1669 ddprintf(("ntfs_readattr: offset too big\n"));
1670 ntfs_ntvattrrele(vap);
1671 return (E2BIG);
1672 }
1673 if (vap->va_compression && vap->va_compressalg) {
1674 u_int8_t *cup;
1675 u_int8_t *uup;
9e758ef5 1676 off_t off, left = rsize, tocopy;
984263bc
MD
1677 caddr_t data = rdata;
1678 cn_t cn;
1679
1680 ddprintf(("ntfs_ntreadattr: compression: %d\n",
1681 vap->va_compressalg));
1682
884717e1
SW
1683 cup = kmalloc(ntfs_cntob(NTFS_COMPUNIT_CL), M_NTFSDECOMP,
1684 M_WAITOK);
1685 uup = kmalloc(ntfs_cntob(NTFS_COMPUNIT_CL), M_NTFSDECOMP,
1686 M_WAITOK);
984263bc
MD
1687
1688 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1));
1689 off = roff - ntfs_cntob(cn);
1690
1691 while (left) {
1692 error = ntfs_readattr_plain(ntmp, ip, attrnum,
1693 attrname, ntfs_cntob(cn),
23731001 1694 ntfs_cntob(NTFS_COMPUNIT_CL),
984263bc
MD
1695 cup, &init, NULL);
1696 if (error)
1697 break;
1698
1699 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off);
1700
1701 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) {
1702 if (uio)
1703 uiomove(cup + off, tocopy, uio);
1704 else
1705 memcpy(data, cup + off, tocopy);
1706 } else if (init == 0) {
1707 if (uio) {
1708 size_t remains = tocopy;
1709 for(; remains; remains--)
1710 uiomove("", 1, uio);
1711 }
1712 else
1713 bzero(data, tocopy);
1714 } else {
1715 error = ntfs_uncompunit(ntmp, uup, cup);
1716 if (error)
1717 break;
1718 if (uio)
1719 uiomove(uup + off, tocopy, uio);
1720 else
1721 memcpy(data, uup + off, tocopy);
1722 }
1723
1724 left -= tocopy;
1725 data = data + tocopy;
1726 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL);
1727 cn += NTFS_COMPUNIT_CL;
1728 }
1729
884717e1
SW
1730 kfree(uup, M_NTFSDECOMP);
1731 kfree(cup, M_NTFSDECOMP);
984263bc
MD
1732 } else
1733 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname,
1734 roff, rsize, rdata, &init, uio);
1735 ntfs_ntvattrrele(vap);
1736 return (error);
1737}
1738
122df98f 1739#if 0 /* UNUSED */
984263bc 1740int
cd0a65a2 1741ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off)
984263bc
MD
1742{
1743 u_int8_t sz;
1744 int i;
1745
1746 if (NULL == run) {
086c1d7e 1747 kprintf("ntfs_parsetun: run == NULL\n");
984263bc
MD
1748 return (EINVAL);
1749 }
1750 sz = run[(*off)++];
1751 if (0 == sz) {
086c1d7e 1752 kprintf("ntfs_parserun: trying to go out of run\n");
984263bc
MD
1753 return (E2BIG);
1754 }
1755 *cl = 0;
1756 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
086c1d7e 1757 kprintf("ntfs_parserun: " \
984263bc
MD
1758 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
1759 sz, len, *off);
1760 return (EINVAL);
1761 }
1762 for (i = 0; i < (sz & 0xF); i++)
1763 *cl += (u_int32_t) run[(*off)++] << (i << 3);
1764
1765 sz >>= 4;
1766 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
086c1d7e 1767 kprintf("ntfs_parserun: " \
984263bc
MD
1768 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
1769 sz, len, *off);
1770 return (EINVAL);
1771 }
1772 for (i = 0; i < (sz & 0xF); i++)
1773 *cn += (u_int32_t) run[(*off)++] << (i << 3);
1774
1775 return (0);
1776}
1777#endif
1778
1779/*
1780 * Process fixup routine on given buffer.
1781 */
1782int
cd0a65a2 1783ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf,
984263bc
MD
1784 size_t len)
1785{
1786 struct fixuphdr *fhp = (struct fixuphdr *) buf;
1787 int i;
1788 u_int16_t fixup;
1789 u_int16_t *fxp;
1790 u_int16_t *cfxp;
1791
1792 if (fhp->fh_magic != magic) {
086c1d7e 1793 kprintf("ntfs_procfixups: magic doesn't match: %08x != %08x\n",
984263bc
MD
1794 fhp->fh_magic, magic);
1795 return (EINVAL);
1796 }
1797 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) {
086c1d7e 1798 kprintf("ntfs_procfixups: " \
984263bc 1799 "bad fixups number: %d for %ld bytes block\n",
086c1d7e 1800 fhp->fh_fnum, (long)len); /* XXX kprintf kludge */
984263bc
MD
1801 return (EINVAL);
1802 }
1803 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) {
086c1d7e 1804 kprintf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff);
984263bc
MD
1805 return (EINVAL);
1806 }
1807 fxp = (u_int16_t *) (buf + fhp->fh_foff);
1808 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2);
1809 fixup = *fxp++;
1810 for (i = 1; i < fhp->fh_fnum; i++, fxp++) {
1811 if (*cfxp != fixup) {
086c1d7e 1812 kprintf("ntfs_procfixups: fixup %d doesn't match\n", i);
984263bc
MD
1813 return (EINVAL);
1814 }
1815 *cfxp = *fxp;
8912d233 1816 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps);
984263bc
MD
1817 }
1818 return (0);
1819}
1820
122df98f 1821#if 0 /* UNUSED */
984263bc 1822int
cd0a65a2 1823ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len,
984263bc
MD
1824 cn_t vcn)
1825{
1826 cn_t ccn = 0;
1827 cn_t ccl = 0;
1828 u_long off = 0;
1829 int error = 0;
1830
1831#if NTFS_DEBUG
1832 int i;
086c1d7e 1833 kprintf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n",
984263bc 1834 run, len, (u_long) vcn);
086c1d7e 1835 kprintf("ntfs_runtocn: run: ");
984263bc 1836 for (i = 0; i < len; i++)
086c1d7e
SW
1837 kprintf("0x%02x ", run[i]);
1838 kprintf("\n");
984263bc
MD
1839#endif
1840
1841 if (NULL == run) {
086c1d7e 1842 kprintf("ntfs_runtocn: run == NULL\n");
984263bc
MD
1843 return (EINVAL);
1844 }
1845 do {
1846 if (run[off] == 0) {
086c1d7e 1847 kprintf("ntfs_runtocn: vcn too big\n");
984263bc
MD
1848 return (E2BIG);
1849 }
1850 vcn -= ccl;
1851 error = ntfs_parserun(&ccn, &ccl, run, len, &off);
1852 if (error) {
086c1d7e 1853 kprintf("ntfs_runtocn: ntfs_parserun failed\n");
984263bc
MD
1854 return (error);
1855 }
1856 } while (ccl <= vcn);
1857 *cn = ccn + vcn;
1858 return (0);
1859}
1860#endif
1861
1862/*
1863 * this initializes toupper table & dependant variables to be ready for
1864 * later work
1865 */
1866void
cd0a65a2 1867ntfs_toupper_init(void)
984263bc 1868{
2038fb68 1869 ntfs_toupper_tab = NULL;
f2770c70 1870 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0);
984263bc
MD
1871 ntfs_toupper_usecount = 0;
1872}
1873
1874/*
1875 * if the ntfs_toupper_tab[] is filled already, just raise use count;
1876 * otherwise read the data from the filesystem we are currently mounting
1877 */
1878int
cd0a65a2 1879ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp)
984263bc
MD
1880{
1881 int error = 0;
1882 struct vnode *vp;
1883
1884 /* get exclusive access */
056f4388 1885 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE);
984263bc
MD
1886
1887 /* only read the translation data from a file if it hasn't been
1888 * read already */
1889 if (ntfs_toupper_tab)
1890 goto out;
1891
1892 /*
1893 * Read in Unicode lowercase -> uppercase translation file.
1894 * XXX for now, just the first 256 entries are used anyway,
1895 * so don't bother reading more
1896 */
884717e1
SW
1897 ntfs_toupper_tab = kmalloc(65536 * sizeof(wchar), M_NTFSRDATA,
1898 M_WAITOK);
984263bc 1899
b9b0a6d0 1900 if ((error = VFS_VGET(mp, NULL, NTFS_UPCASEINO, &vp)))
984263bc
MD
1901 goto out;
1902 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
1903 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL);
1904 vput(vp);
1905
1906 out:
1907 ntfs_toupper_usecount++;
056f4388 1908 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE);
984263bc
MD
1909 return (error);
1910}
1911
1912/*
1913 * lower the use count and if it reaches zero, free the memory
1914 * tied by toupper table
1915 */
1916void
cd0a65a2 1917ntfs_toupper_unuse(void)
984263bc
MD
1918{
1919 /* get exclusive access */
056f4388 1920 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE);
984263bc
MD
1921
1922 ntfs_toupper_usecount--;
1923 if (ntfs_toupper_usecount == 0) {
884717e1 1924 kfree(ntfs_toupper_tab, M_NTFSRDATA);
984263bc
MD
1925 ntfs_toupper_tab = NULL;
1926 }
1927#ifdef DIAGNOSTIC
1928 else if (ntfs_toupper_usecount < 0) {
ed20d0e3 1929 panic("ntfs_toupper_unuse(): use count negative: %d",
984263bc
MD
1930 ntfs_toupper_usecount);
1931 }
1932#endif
1933
1934 /* release the lock */
056f4388 1935 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE);
984263bc
MD
1936}
1937
1938int
23731001
AP
1939ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w, char *cs_local,
1940 char *cs_ntfs)
984263bc
MD
1941{
1942 char ** u28;
1943 int i, j, h, l;
1944
23731001
AP
1945 if (ntfs_iconv && cs_local) {
1946 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l);
1947 return (0);
1948 }
1949
884717e1 1950 u28 = kmalloc(256 * sizeof(char *), M_TEMP, M_WAITOK | M_ZERO);
984263bc
MD
1951
1952 for (i=0; i<256; i++) {
1953 h = (u2w[i] >> 8) & 0xFF;
1954 l = (u2w[i]) &0xFF;
1955
1956 if (u28[h] == NULL) {
884717e1 1957 u28[h] = kmalloc(256 * sizeof(char), M_TEMP, M_WAITOK);
984263bc
MD
1958 for (j=0; j<256; j++)
1959 u28[h][j] = '_';
1960 }
1961
1962 u28[h][l] = i & 0xFF;
1963 }
1964
1965 ntmp->ntm_u28 = u28;
1966
1967 return (0);
1968}
1969
1970int
1971ntfs_u28_uninit(struct ntfsmount *ntmp)
1972{
1973 char ** u28;
1974 int i;
1975
23731001
AP
1976 if (ntmp->ntm_u28 == NULL) {
1977 if (ntfs_iconv && ntmp->ntm_ic_u2l) {
1978 ntfs_iconv->close(ntmp->ntm_ic_u2l);
1979 }
1980 return (0);
1981 }
1982
984263bc
MD
1983 if (ntmp->ntm_u28 == NULL)
1984 return (0);
1985
1986 u28 = ntmp->ntm_u28;
1987
1988 for (i=0; i<256; i++)
1989 if (u28[i] != NULL)
884717e1 1990 kfree(u28[i], M_TEMP);
984263bc 1991
884717e1 1992 kfree(u28, M_TEMP);
984263bc
MD
1993
1994 return (0);
1995}
1996
1997int
23731001
AP
1998ntfs_82u_init(struct ntfsmount *ntmp, char *cs_local, char *cs_ntfs)
1999
984263bc
MD
2000{
2001 wchar * _82u;
2002 int i;
2003
23731001
AP
2004 if (ntfs_iconv && cs_local) {
2005 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u);
2006 return (0);
2007 }
2008
884717e1 2009 _82u = kmalloc(256 * sizeof(wchar), M_TEMP, M_WAITOK);
984263bc 2010
23731001
AP
2011 for (i=0; i<256; i++)
2012 _82u[i] = i;
984263bc
MD
2013
2014 ntmp->ntm_82u = _82u;
2015
2016 return (0);
2017}
2018
2019int
2020ntfs_82u_uninit(struct ntfsmount *ntmp)
2021{
23731001
AP
2022 if (ntmp->ntm_82u == NULL) {
2023 if (ntfs_iconv && ntmp->ntm_ic_l2u) {
2024 ntfs_iconv->close(ntmp->ntm_ic_l2u);
2025 }
2026 return (0);
2027 }
2028
884717e1 2029 kfree(ntmp->ntm_82u, M_TEMP);
984263bc
MD
2030 return (0);
2031}
2032
2033/*
2034 * maps the Unicode char to 8bit equivalent
2035 * XXX currently only gets lower 8bit from the Unicode char
2036 * and substitutes a '_' for it if the result would be '\0';
2037 * something better has to be definitely though out
2038 */
23731001 2039wchar
cd0a65a2 2040ntfs_u28(struct ntfsmount *ntmp, wchar wc)
984263bc 2041{
23731001
AP
2042 char *p, *outp, inbuf[3], outbuf[3];
2043 size_t ilen, olen;
2044
2045 if (ntfs_iconv && ntmp->ntm_ic_u2l) {
2046 ilen = olen = 2;
2047 inbuf[0] = (char)(wc>>8);
2048 inbuf[1] = (char)wc;
2049 inbuf[2] = '\0';
2050 p = inbuf;
2051 outp = outbuf;
2052 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen,
2053 &outp, &olen);
2054 if (olen == 1) {
2055 return ((wchar)(outbuf[0]&0xFF));
2056 } else if (olen == 0) {
2057 return ((wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)));
2058 }
2059 return ('?');
2060 }
984263bc
MD
2061
2062 p = ntmp->ntm_u28[(wc>>8)&0xFF];
2063 if (p == NULL)
2064 return ('_');
2065 return (p[wc&0xFF]);
2066}
2067
23731001
AP
2068wchar
2069ntfs_82u(struct ntfsmount *ntmp,
2070 wchar wc,
2071 int *len)
2072{
2073 char *p, *outp, inbuf[3], outbuf[3];
2074 wchar uc;
2075 size_t ilen, olen;
2076
2077 if (ntfs_iconv && ntmp->ntm_ic_l2u) {
2078 ilen = (size_t)*len;
2079 olen = 2;
2080
2081 inbuf[0] = (char)(wc>>8);
2082 inbuf[1] = (char)wc;
2083 inbuf[2] = '\0';
2084 p = inbuf;
2085 outp = outbuf;
2086 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, (const char **)&p, &ilen,
2087 &outp, &olen);
2088 *len -= (int)ilen;
2089 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF));
2090
2091 return (uc);
2092 }
2093
2094 if (ntmp->ntm_82u != NULL)
2095 return (ntmp->ntm_82u[wc&0xFF]);
2096
2097 return ('?');
2098}