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 * $DragonFly: src/sys/vfs/ntfs/ntfs_subr.c,v 1.11 2004/03/01 06:33:22 dillon Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/types.h> 34 #include <sys/systm.h> 35 #include <sys/proc.h> 36 #include <sys/namei.h> 37 #include <sys/kernel.h> 38 #include <sys/vnode.h> 39 #include <sys/mount.h> 40 #include <sys/buf.h> 41 #include <sys/file.h> 42 #include <sys/malloc.h> 43 #include <sys/lock.h> 44 45 #if defined(__NetBSD__) 46 #include <miscfs/specfs/specdev.h> 47 #endif 48 49 /* #define NTFS_DEBUG 1 */ 50 #include "ntfs.h" 51 #include "ntfsmount.h" 52 #include "ntfs_inode.h" 53 #include "ntfs_vfsops.h" 54 #include "ntfs_subr.h" 55 #include "ntfs_compr.h" 56 #include "ntfs_ihash.h" 57 58 #if defined(__DragonFly__) 59 MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information"); 60 MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data"); 61 MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage"); 62 MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary"); 63 #endif 64 65 static int ntfs_ntlookupattr (struct ntfsmount *, const char *, int, int *, char **); 66 static int ntfs_findvattr (struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t); 67 static int ntfs_uastricmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t); 68 static int ntfs_uastrcmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t); 69 70 /* table for mapping Unicode chars into uppercase; it's filled upon first 71 * ntfs mount, freed upon last ntfs umount */ 72 static wchar *ntfs_toupper_tab; 73 #define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)]) 74 static struct lock ntfs_toupper_lock; 75 static signed int ntfs_toupper_usecount; 76 77 /* support macro for ntfs_ntvattrget() */ 78 #define NTFS_AALPCMP(aalp,type,name,namelen) ( \ 79 (aalp->al_type == type) && (aalp->al_namelen == namelen) && \ 80 !NTFS_UASTRCMP(aalp->al_name,aalp->al_namelen,name,namelen) ) 81 82 /* 83 * 84 */ 85 int 86 ntfs_ntvattrrele(vap) 87 struct ntvattr * vap; 88 { 89 dprintf(("ntfs_ntvattrrele: ino: %d, type: 0x%x\n", 90 vap->va_ip->i_number, vap->va_type)); 91 92 ntfs_ntrele(vap->va_ip); 93 94 return (0); 95 } 96 97 /* 98 * find the attribute in the ntnode 99 */ 100 static int 101 ntfs_findvattr(ntmp, ip, lvapp, vapp, type, name, namelen, vcn) 102 struct ntfsmount *ntmp; 103 struct ntnode *ip; 104 struct ntvattr **lvapp, **vapp; 105 u_int32_t type; 106 const char *name; 107 size_t namelen; 108 cn_t vcn; 109 { 110 int error; 111 struct ntvattr *vap; 112 113 if((ip->i_flag & IN_LOADED) == 0) { 114 dprintf(("ntfs_findvattr: node not loaded, ino: %d\n", 115 ip->i_number)); 116 error = ntfs_loadntnode(ntmp,ip); 117 if (error) { 118 printf("ntfs_findvattr: FAILED TO LOAD INO: %d\n", 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 */ 152 int 153 ntfs_ntvattrget( 154 struct ntfsmount * ntmp, 155 struct ntnode * ip, 156 u_int32_t type, 157 const char *name, 158 cn_t vcn, 159 struct ntvattr ** vapp) 160 { 161 struct ntvattr *lvap = NULL; 162 struct attr_attrlist *aalp; 163 struct attr_attrlist *nextaalp; 164 struct vnode *newvp; 165 struct ntnode *newip; 166 caddr_t alpool; 167 size_t namelen, len; 168 int error; 169 170 *vapp = NULL; 171 172 if (name) { 173 dprintf(("ntfs_ntvattrget: " \ 174 "ino: %d, type: 0x%x, name: %s, vcn: %d\n", \ 175 ip->i_number, type, name, (u_int32_t) vcn)); 176 namelen = strlen(name); 177 } else { 178 dprintf(("ntfs_ntvattrget: " \ 179 "ino: %d, type: 0x%x, vcn: %d\n", \ 180 ip->i_number, type, (u_int32_t) vcn)); 181 name = ""; 182 namelen = 0; 183 } 184 185 error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn); 186 if (error >= 0) 187 return (error); 188 189 if (!lvap) { 190 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 191 "ino: %d, type: 0x%x, name: %s, vcn: %d\n", \ 192 ip->i_number, type, name, (u_int32_t) vcn)); 193 return (ENOENT); 194 } 195 /* Scan $ATTRIBUTE_LIST for requested attribute */ 196 len = lvap->va_datalen; 197 MALLOC(alpool, caddr_t, len, M_TEMP, M_WAITOK); 198 error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len, 199 NULL); 200 if (error) 201 goto out; 202 203 aalp = (struct attr_attrlist *) alpool; 204 nextaalp = NULL; 205 206 for(; len > 0; aalp = nextaalp) { 207 dprintf(("ntfs_ntvattrget: " \ 208 "attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \ 209 aalp->al_inumber, aalp->al_type, \ 210 (u_int32_t) aalp->al_vcnstart)); 211 212 if (len > aalp->reclen) { 213 nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *); 214 } else { 215 nextaalp = NULL; 216 } 217 len -= aalp->reclen; 218 219 if (!NTFS_AALPCMP(aalp, type, name, namelen) || 220 (nextaalp && (nextaalp->al_vcnstart <= vcn) && 221 NTFS_AALPCMP(nextaalp, type, name, namelen))) 222 continue; 223 224 dprintf(("ntfs_ntvattrget: attribute in ino: %d\n", 225 aalp->al_inumber)); 226 227 /* this is not a main record, so we can't use just plain 228 vget() */ 229 error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber, 230 NTFS_A_DATA, NULL, LK_EXCLUSIVE, 231 VG_EXT, curthread, &newvp); 232 if (error) { 233 printf("ntfs_ntvattrget: CAN'T VGET INO: %d\n", 234 aalp->al_inumber); 235 goto out; 236 } 237 newip = VTONT(newvp); 238 /* XXX have to lock ntnode */ 239 error = ntfs_findvattr(ntmp, newip, &lvap, vapp, 240 type, name, namelen, vcn); 241 vput(newvp); 242 if (error == 0) 243 goto out; 244 printf("ntfs_ntvattrget: ATTRLIST ERROR.\n"); 245 break; 246 } 247 error = ENOENT; 248 249 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 250 "ino: %d, type: 0x%x, name: %.*s, vcn: %d\n", \ 251 ip->i_number, type, (int) namelen, name, (u_int32_t) vcn)); 252 out: 253 FREE(alpool, M_TEMP); 254 return (error); 255 } 256 257 /* 258 * Read ntnode from disk, make ntvattr list. 259 * 260 * ntnode should be locked 261 */ 262 int 263 ntfs_loadntnode( 264 struct ntfsmount * ntmp, 265 struct ntnode * ip) 266 { 267 struct filerec *mfrp; 268 daddr_t bn; 269 int error,off; 270 struct attr *ap; 271 struct ntvattr *nvap; 272 273 dprintf(("ntfs_loadntnode: loading ino: %d\n",ip->i_number)); 274 275 MALLOC(mfrp, struct filerec *, ntfs_bntob(ntmp->ntm_bpmftrec), 276 M_TEMP, M_WAITOK); 277 278 if (ip->i_number < NTFS_SYSNODESNUM) { 279 struct buf *bp; 280 281 dprintf(("ntfs_loadntnode: read system node\n")); 282 283 bn = ntfs_cntobn(ntmp->ntm_mftcn) + 284 ntmp->ntm_bpmftrec * ip->i_number; 285 286 error = bread(ntmp->ntm_devvp, 287 bn, ntfs_bntob(ntmp->ntm_bpmftrec), &bp); 288 if (error) { 289 printf("ntfs_loadntnode: BREAD FAILED\n"); 290 brelse(bp); 291 goto out; 292 } 293 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec)); 294 bqrelse(bp); 295 } else { 296 struct vnode *vp; 297 298 vp = ntmp->ntm_sysvn[NTFS_MFTINO]; 299 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 300 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec), 301 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL); 302 if (error) { 303 printf("ntfs_loadntnode: ntfs_readattr failed\n"); 304 goto out; 305 } 306 } 307 308 /* Check if magic and fixups are correct */ 309 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp, 310 ntfs_bntob(ntmp->ntm_bpmftrec)); 311 if (error) { 312 printf("ntfs_loadntnode: BAD MFT RECORD %d\n", 313 (u_int32_t) ip->i_number); 314 goto out; 315 } 316 317 dprintf(("ntfs_loadntnode: load attrs for ino: %d\n",ip->i_number)); 318 off = mfrp->fr_attroff; 319 ap = (struct attr *) ((caddr_t)mfrp + off); 320 321 LIST_INIT(&ip->i_valist); 322 323 while (ap->a_hdr.a_type != -1) { 324 error = ntfs_attrtontvattr(ntmp, &nvap, ap); 325 if (error) 326 break; 327 nvap->va_ip = ip; 328 329 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list); 330 331 off += ap->a_hdr.reclen; 332 ap = (struct attr *) ((caddr_t)mfrp + off); 333 } 334 if (error) { 335 printf("ntfs_loadntnode: failed to load attr ino: %d\n", 336 ip->i_number); 337 goto out; 338 } 339 340 ip->i_mainrec = mfrp->fr_mainrec; 341 ip->i_nlink = mfrp->fr_nlink; 342 ip->i_frflag = mfrp->fr_flags; 343 344 ip->i_flag |= IN_LOADED; 345 346 out: 347 FREE(mfrp, M_TEMP); 348 return (error); 349 } 350 351 /* 352 * Routine locks ntnode and increase usecount, just opposite of 353 * ntfs_ntput(). 354 */ 355 int 356 ntfs_ntget(ip) 357 struct ntnode *ip; 358 { 359 lwkt_tokref ilock; 360 361 dprintf(("ntfs_ntget: get ntnode %d: %p, usecount: %d\n", 362 ip->i_number, ip, ip->i_usecount)); 363 364 ip->i_usecount++; /* ZZZ */ 365 lwkt_gettoken(&ilock, &ip->i_interlock); 366 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE | LK_INTERLOCK, &ilock); 367 368 return 0; 369 } 370 371 /* 372 * Routine search ntnode in hash, if found: lock, inc usecount and return. 373 * If not in hash allocate structure for ntnode, prefill it, lock, 374 * inc count and return. 375 * 376 * ntnode returned locked 377 */ 378 int 379 ntfs_ntlookup( 380 struct ntfsmount * ntmp, 381 ino_t ino, 382 struct ntnode ** ipp) 383 { 384 struct ntnode *ip; 385 386 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 387 388 do { 389 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) { 390 ntfs_ntget(ip); 391 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 392 ino, ip, ip->i_usecount)); 393 *ipp = ip; 394 return (0); 395 } 396 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL)); 397 398 MALLOC(ip, struct ntnode *, sizeof(struct ntnode), 399 M_NTFSNTNODE, M_WAITOK); 400 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 401 bzero((caddr_t) ip, sizeof(struct ntnode)); 402 403 /* Generic initialization */ 404 ip->i_devvp = ntmp->ntm_devvp; 405 ip->i_dev = ntmp->ntm_dev; 406 ip->i_number = ino; 407 ip->i_mp = ntmp; 408 409 LIST_INIT(&ip->i_fnlist); 410 VREF(ip->i_devvp); 411 412 /* init lock and lock the newborn ntnode */ 413 lockinit(&ip->i_lock, 0, "ntnode", 0, LK_EXCLUSIVE); 414 lwkt_token_init(&ip->i_interlock); 415 ntfs_ntget(ip); 416 417 ntfs_nthashins(ip); 418 419 LOCKMGR(&ntfs_hashlock, LK_RELEASE, NULL); 420 421 *ipp = ip; 422 423 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 424 ino, ip, ip->i_usecount)); 425 426 return (0); 427 } 428 429 /* 430 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 431 * deallocate ntnode. 432 * 433 * ntnode should be locked on entry, and unlocked on return. 434 */ 435 void 436 ntfs_ntput(ip) 437 struct ntnode *ip; 438 { 439 struct ntvattr *vap; 440 lwkt_tokref ilock; 441 442 dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n", 443 ip->i_number, ip, ip->i_usecount)); 444 445 lwkt_gettoken(&ilock, &ip->i_interlock); 446 ip->i_usecount--; 447 448 #ifdef DIAGNOSTIC 449 if (ip->i_usecount < 0) { 450 panic("ntfs_ntput: ino: %d usecount: %d \n", 451 ip->i_number,ip->i_usecount); 452 } 453 #endif 454 455 if (ip->i_usecount > 0) { 456 LOCKMGR(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ilock); 457 return; 458 } 459 460 dprintf(("ntfs_ntput: deallocating ntnode: %d\n", ip->i_number)); 461 462 if (ip->i_fnlist.lh_first) 463 panic("ntfs_ntput: ntnode has fnodes\n"); 464 465 ntfs_nthashrem(ip); 466 467 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 468 LIST_REMOVE(vap,va_list); 469 ntfs_freentvattr(vap); 470 } 471 lwkt_reltoken(&ilock); 472 vrele(ip->i_devvp); 473 FREE(ip, M_NTFSNTNODE); 474 } 475 476 /* 477 * increment usecount of ntnode 478 */ 479 void 480 ntfs_ntref(ip) 481 struct ntnode *ip; 482 { 483 ip->i_usecount++; 484 485 dprintf(("ntfs_ntref: ino %d, usecount: %d\n", 486 ip->i_number, ip->i_usecount)); 487 488 } 489 490 /* 491 * Decrement usecount of ntnode. 492 */ 493 void 494 ntfs_ntrele(ip) 495 struct ntnode *ip; 496 { 497 lwkt_tokref ilock; 498 499 dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n", 500 ip->i_number, ip, ip->i_usecount)); 501 502 lwkt_gettoken(&ilock, &ip->i_interlock); 503 ip->i_usecount--; 504 505 if (ip->i_usecount < 0) { 506 panic("ntfs_ntrele: ino: %d usecount: %d \n", 507 ip->i_number,ip->i_usecount); 508 } 509 lwkt_reltoken(&ilock); 510 } 511 512 /* 513 * Deallocate all memory allocated for ntvattr 514 */ 515 void 516 ntfs_freentvattr(vap) 517 struct ntvattr * vap; 518 { 519 if (vap->va_flag & NTFS_AF_INRUN) { 520 if (vap->va_vruncn) 521 FREE(vap->va_vruncn, M_NTFSRUN); 522 if (vap->va_vruncl) 523 FREE(vap->va_vruncl, M_NTFSRUN); 524 } else { 525 if (vap->va_datap) 526 FREE(vap->va_datap, M_NTFSRDATA); 527 } 528 FREE(vap, M_NTFSNTVATTR); 529 } 530 531 /* 532 * Convert disk image of attribute into ntvattr structure, 533 * runs are expanded also. 534 */ 535 int 536 ntfs_attrtontvattr( 537 struct ntfsmount * ntmp, 538 struct ntvattr ** rvapp, 539 struct attr * rap) 540 { 541 int error, i; 542 struct ntvattr *vap; 543 544 error = 0; 545 *rvapp = NULL; 546 547 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 548 M_NTFSNTVATTR, M_WAITOK); 549 bzero(vap, sizeof(struct ntvattr)); 550 vap->va_ip = NULL; 551 vap->va_flag = rap->a_hdr.a_flag; 552 vap->va_type = rap->a_hdr.a_type; 553 vap->va_compression = rap->a_hdr.a_compression; 554 vap->va_index = rap->a_hdr.a_index; 555 556 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 557 558 vap->va_namelen = rap->a_hdr.a_namelen; 559 if (rap->a_hdr.a_namelen) { 560 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 561 ddprintf((", name:[")); 562 for (i = 0; i < vap->va_namelen; i++) { 563 vap->va_name[i] = unp[i]; 564 ddprintf(("%c", vap->va_name[i])); 565 } 566 ddprintf(("]")); 567 } 568 if (vap->va_flag & NTFS_AF_INRUN) { 569 ddprintf((", nonres.")); 570 vap->va_datalen = rap->a_nr.a_datalen; 571 vap->va_allocated = rap->a_nr.a_allocated; 572 vap->va_vcnstart = rap->a_nr.a_vcnstart; 573 vap->va_vcnend = rap->a_nr.a_vcnend; 574 vap->va_compressalg = rap->a_nr.a_compressalg; 575 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 576 &(vap->va_vruncnt), 577 (caddr_t) rap + rap->a_nr.a_dataoff); 578 } else { 579 vap->va_compressalg = 0; 580 ddprintf((", res.")); 581 vap->va_datalen = rap->a_r.a_datalen; 582 vap->va_allocated = rap->a_r.a_datalen; 583 vap->va_vcnstart = 0; 584 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 585 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 586 M_NTFSRDATA, M_WAITOK); 587 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 588 rap->a_r.a_datalen); 589 } 590 ddprintf((", len: %d", vap->va_datalen)); 591 592 if (error) 593 FREE(vap, M_NTFSNTVATTR); 594 else 595 *rvapp = vap; 596 597 ddprintf(("\n")); 598 599 return (error); 600 } 601 602 /* 603 * Expand run into more utilizable and more memory eating format. 604 */ 605 int 606 ntfs_runtovrun( 607 cn_t ** rcnp, 608 cn_t ** rclp, 609 u_long * rcntp, 610 u_int8_t * run) 611 { 612 u_int32_t off; 613 u_int32_t sz, i; 614 cn_t *cn; 615 cn_t *cl; 616 u_long cnt; 617 cn_t prev; 618 cn_t tmp; 619 620 off = 0; 621 cnt = 0; 622 i = 0; 623 while (run[off]) { 624 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 625 cnt++; 626 } 627 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 628 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 629 630 off = 0; 631 cnt = 0; 632 prev = 0; 633 while (run[off]) { 634 635 sz = run[off++]; 636 cl[cnt] = 0; 637 638 for (i = 0; i < (sz & 0xF); i++) 639 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 640 641 sz >>= 4; 642 if (run[off + sz - 1] & 0x80) { 643 tmp = ((u_int64_t) - 1) << (sz << 3); 644 for (i = 0; i < sz; i++) 645 tmp |= (u_int64_t) run[off++] << (i << 3); 646 } else { 647 tmp = 0; 648 for (i = 0; i < sz; i++) 649 tmp |= (u_int64_t) run[off++] << (i << 3); 650 } 651 if (tmp) 652 prev = cn[cnt] = prev + tmp; 653 else 654 cn[cnt] = tmp; 655 656 cnt++; 657 } 658 *rcnp = cn; 659 *rclp = cl; 660 *rcntp = cnt; 661 return (0); 662 } 663 664 /* 665 * Compare unicode and ascii string case insens. 666 */ 667 static int 668 ntfs_uastricmp(ntmp, ustr, ustrlen, astr, astrlen) 669 struct ntfsmount *ntmp; 670 const wchar *ustr; 671 size_t ustrlen; 672 const char *astr; 673 size_t astrlen; 674 { 675 size_t i; 676 int res; 677 678 /* 679 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 680 * symbols not covered by translation table 681 */ 682 for (i = 0; i < ustrlen && i < astrlen; i++) { 683 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) - 684 ((int)NTFS_TOUPPER(NTFS_82U(astr[i]))); 685 if (res) 686 return res; 687 } 688 return (ustrlen - astrlen); 689 } 690 691 /* 692 * Compare unicode and ascii string case sens. 693 */ 694 static int 695 ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 696 struct ntfsmount *ntmp; 697 const wchar *ustr; 698 size_t ustrlen; 699 const char *astr; 700 size_t astrlen; 701 { 702 size_t i; 703 int res; 704 705 for (i = 0; (i < ustrlen) && (i < astrlen); i++) { 706 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]); 707 if (res) 708 return res; 709 } 710 return (ustrlen - astrlen); 711 } 712 713 /* 714 * Search fnode in ntnode, if not found allocate and preinitialize. 715 * 716 * ntnode should be locked on entry. 717 */ 718 int 719 ntfs_fget( 720 struct ntfsmount *ntmp, 721 struct ntnode *ip, 722 int attrtype, 723 char *attrname, 724 struct fnode **fpp) 725 { 726 struct fnode *fp; 727 728 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 729 ip->i_number,attrtype, attrname?attrname:"")); 730 *fpp = NULL; 731 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 732 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 733 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 734 735 if ((attrtype == fp->f_attrtype) && 736 ((!attrname && !fp->f_attrname) || 737 (attrname && fp->f_attrname && 738 !strcmp(attrname,fp->f_attrname)))){ 739 dprintf(("ntfs_fget: found existed: %p\n",fp)); 740 *fpp = fp; 741 } 742 } 743 744 if (*fpp) 745 return (0); 746 747 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK); 748 bzero(fp, sizeof(struct fnode)); 749 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 750 751 fp->f_ip = ip; 752 if (attrname) { 753 fp->f_flag |= FN_AATTRNAME; 754 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 755 strcpy(fp->f_attrname, attrname); 756 } else 757 fp->f_attrname = NULL; 758 fp->f_attrtype = attrtype; 759 760 ntfs_ntref(ip); 761 762 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 763 764 *fpp = fp; 765 766 return (0); 767 } 768 769 /* 770 * Deallocate fnode, remove it from ntnode's fnode list. 771 * 772 * ntnode should be locked. 773 */ 774 void 775 ntfs_frele( 776 struct fnode *fp) 777 { 778 struct ntnode *ip = FTONT(fp); 779 780 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 781 782 dprintf(("ntfs_frele: deallocating fnode\n")); 783 LIST_REMOVE(fp,f_fnlist); 784 if (fp->f_flag & FN_AATTRNAME) 785 FREE(fp->f_attrname, M_TEMP); 786 if (fp->f_dirblbuf) 787 FREE(fp->f_dirblbuf, M_NTFSDIR); 788 FREE(fp, M_NTFSFNODE); 789 ntfs_ntrele(ip); 790 } 791 792 /* 793 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 794 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 795 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 796 */ 797 static int 798 ntfs_ntlookupattr( 799 struct ntfsmount * ntmp, 800 const char * name, 801 int namelen, 802 int *attrtype, 803 char **attrname) 804 { 805 const char *sys; 806 size_t syslen, i; 807 struct ntvattrdef *adp; 808 809 if (namelen == 0) 810 return (0); 811 812 if (name[0] == '$') { 813 sys = name; 814 for (syslen = 0; syslen < namelen; syslen++) { 815 if(sys[syslen] == ':') { 816 name++; 817 namelen--; 818 break; 819 } 820 } 821 name += syslen; 822 namelen -= syslen; 823 824 adp = ntmp->ntm_ad; 825 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 826 if (syslen != adp->ad_namelen || 827 strncmp(sys, adp->ad_name, syslen) != 0) 828 continue; 829 830 *attrtype = adp->ad_type; 831 goto out; 832 } 833 return (ENOENT); 834 } else 835 *attrtype = NTFS_A_DATA; 836 837 out: 838 if (namelen) { 839 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 840 memcpy((*attrname), name, namelen); 841 (*attrname)[namelen] = '\0'; 842 } 843 844 return (0); 845 } 846 847 /* 848 * Lookup specifed node for filename, matching cnp, 849 * return fnode filled. 850 */ 851 int 852 ntfs_ntlookupfile( 853 struct ntfsmount * ntmp, 854 struct vnode * vp, 855 struct componentname * cnp, 856 struct vnode ** vpp) 857 { 858 struct fnode *fp = VTOF(vp); 859 struct ntnode *ip = FTONT(fp); 860 struct ntvattr *vap; /* Root attribute */ 861 cn_t cn; /* VCN in current attribute */ 862 caddr_t rdbuf; /* Buffer to read directory's blocks */ 863 u_int32_t blsize; 864 u_int32_t rdsize; /* Length of data to read from current block */ 865 struct attr_indexentry *iep; 866 int error, res, anamelen, fnamelen; 867 const char *fname,*aname; 868 u_int32_t aoff; 869 int attrtype = NTFS_A_DATA; 870 char *attrname = NULL; 871 struct fnode *nfp; 872 struct vnode *nvp; 873 enum vtype f_type; 874 875 error = ntfs_ntget(ip); 876 if (error) 877 return (error); 878 879 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 880 if (error || (vap->va_flag & NTFS_AF_INRUN)) 881 return (ENOTDIR); 882 883 blsize = vap->va_a_iroot->ir_size; 884 rdsize = vap->va_datalen; 885 886 /* 887 * Divide file name into: foofilefoofilefoofile[:attrspec] 888 * Store like this: fname:fnamelen [aname:anamelen] 889 */ 890 fname = cnp->cn_nameptr; 891 aname = NULL; 892 anamelen = 0; 893 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 894 if(fname[fnamelen] == ':') { 895 aname = fname + fnamelen + 1; 896 anamelen = cnp->cn_namelen - fnamelen - 1; 897 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 898 fname, fnamelen, aname, anamelen)); 899 break; 900 } 901 902 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 903 904 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 905 906 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 907 0, rdsize, rdbuf, NULL); 908 if (error) 909 goto fail; 910 911 aoff = sizeof(struct attr_indexroot); 912 913 do { 914 iep = (struct attr_indexentry *) (rdbuf + aoff); 915 916 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 917 aoff += iep->reclen, 918 iep = (struct attr_indexentry *) (rdbuf + aoff)) 919 { 920 ddprintf(("scan: %d, %d\n", 921 (u_int32_t) iep->ie_number, 922 (u_int32_t) iep->ie_fnametype)); 923 924 /* check the name - the case-insensitible check 925 * has to come first, to break from this for loop 926 * if needed, so we can dive correctly */ 927 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 928 fname, fnamelen); 929 if (res > 0) break; 930 if (res < 0) continue; 931 932 if (iep->ie_fnametype == 0 || 933 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 934 { 935 res = NTFS_UASTRCMP(iep->ie_fname, 936 iep->ie_fnamelen, fname, fnamelen); 937 if (res != 0) continue; 938 } 939 940 if (aname) { 941 error = ntfs_ntlookupattr(ntmp, 942 aname, anamelen, 943 &attrtype, &attrname); 944 if (error) 945 goto fail; 946 } 947 948 /* Check if we've found ourself */ 949 if ((iep->ie_number == ip->i_number) && 950 (attrtype == fp->f_attrtype) && 951 ((!attrname && !fp->f_attrname) || 952 (attrname && fp->f_attrname && 953 !strcmp(attrname, fp->f_attrname)))) 954 { 955 VREF(vp); 956 *vpp = vp; 957 error = 0; 958 goto fail; 959 } 960 961 /* vget node, but don't load it */ 962 error = ntfs_vgetex(ntmp->ntm_mountp, 963 iep->ie_number, attrtype, attrname, 964 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 965 curthread, &nvp); 966 967 /* free the buffer returned by ntfs_ntlookupattr() */ 968 if (attrname) { 969 FREE(attrname, M_TEMP); 970 attrname = NULL; 971 } 972 973 if (error) 974 goto fail; 975 976 nfp = VTOF(nvp); 977 978 if (nfp->f_flag & FN_VALID) { 979 *vpp = nvp; 980 goto fail; 981 } 982 983 nfp->f_fflag = iep->ie_fflag; 984 nfp->f_pnumber = iep->ie_fpnumber; 985 nfp->f_times = iep->ie_ftimes; 986 987 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 988 (nfp->f_attrtype == NTFS_A_DATA) && 989 (nfp->f_attrname == NULL)) 990 f_type = VDIR; 991 else 992 f_type = VREG; 993 994 nvp->v_type = f_type; 995 996 if ((nfp->f_attrtype == NTFS_A_DATA) && 997 (nfp->f_attrname == NULL)) 998 { 999 /* Opening default attribute */ 1000 nfp->f_size = iep->ie_fsize; 1001 nfp->f_allocated = iep->ie_fallocated; 1002 nfp->f_flag |= FN_PRELOADED; 1003 } else { 1004 error = ntfs_filesize(ntmp, nfp, 1005 &nfp->f_size, &nfp->f_allocated); 1006 if (error) { 1007 vput(nvp); 1008 goto fail; 1009 } 1010 } 1011 1012 nfp->f_flag &= ~FN_VALID; 1013 *vpp = nvp; 1014 goto fail; 1015 } 1016 1017 /* Dive if possible */ 1018 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1019 dprintf(("ntfs_ntlookupfile: diving\n")); 1020 1021 cn = *(cn_t *) (rdbuf + aoff + 1022 iep->reclen - sizeof(cn_t)); 1023 rdsize = blsize; 1024 1025 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1026 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1027 if (error) 1028 goto fail; 1029 1030 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1031 rdbuf, rdsize); 1032 if (error) 1033 goto fail; 1034 1035 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1036 0x18); 1037 } else { 1038 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1039 error = ENOENT; 1040 break; 1041 } 1042 } while (1); 1043 1044 dprintf(("finish\n")); 1045 1046 fail: 1047 if (attrname) FREE(attrname, M_TEMP); 1048 ntfs_ntvattrrele(vap); 1049 ntfs_ntput(ip); 1050 FREE(rdbuf, M_TEMP); 1051 return (error); 1052 } 1053 1054 /* 1055 * Check if name type is permitted to show. 1056 */ 1057 int 1058 ntfs_isnamepermitted( 1059 struct ntfsmount * ntmp, 1060 struct attr_indexentry * iep) 1061 { 1062 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1063 return 1; 1064 1065 switch (iep->ie_fnametype) { 1066 case 2: 1067 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1068 return 0; 1069 case 0: case 1: case 3: 1070 return 1; 1071 default: 1072 printf("ntfs_isnamepermitted: " \ 1073 "WARNING! Unknown file name type: %d\n", 1074 iep->ie_fnametype); 1075 break; 1076 } 1077 return 0; 1078 } 1079 1080 /* 1081 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1082 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1083 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1084 * fnode, so we can skip toward record number num almost immediatly. 1085 * Anyway this is rather slow routine. The problem is that we don't know 1086 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1087 */ 1088 int 1089 ntfs_ntreaddir( 1090 struct ntfsmount * ntmp, 1091 struct fnode * fp, 1092 u_int32_t num, 1093 struct attr_indexentry ** riepp) 1094 { 1095 struct ntnode *ip = FTONT(fp); 1096 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1097 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1098 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1099 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1100 u_char *bmp = NULL; /* Bitmap */ 1101 u_int32_t blsize; /* Index allocation size (2048) */ 1102 u_int32_t rdsize; /* Length of data to read */ 1103 u_int32_t attrnum; /* Current attribute type */ 1104 u_int32_t cpbl = 1; /* Clusters per directory block */ 1105 u_int32_t blnum; 1106 struct attr_indexentry *iep; 1107 int error = ENOENT; 1108 u_int32_t aoff, cnum; 1109 1110 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1111 error = ntfs_ntget(ip); 1112 if (error) 1113 return (error); 1114 1115 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1116 if (error) 1117 return (ENOTDIR); 1118 1119 if (fp->f_dirblbuf == NULL) { 1120 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1121 MALLOC(fp->f_dirblbuf, caddr_t, 1122 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1123 } 1124 1125 blsize = fp->f_dirblsz; 1126 rdbuf = fp->f_dirblbuf; 1127 1128 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1129 1130 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1131 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1132 0, &bmvap); 1133 if (error) { 1134 error = ENOTDIR; 1135 goto fail; 1136 } 1137 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1138 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1139 bmvap->va_datalen, bmp, NULL); 1140 if (error) 1141 goto fail; 1142 1143 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1144 0, &iavap); 1145 if (error) { 1146 error = ENOTDIR; 1147 goto fail; 1148 } 1149 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1150 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1151 iavap->va_datalen, cpbl)); 1152 } else { 1153 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1154 iavap = bmvap = NULL; 1155 bmp = NULL; 1156 } 1157 1158 /* Try use previous values */ 1159 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1160 attrnum = fp->f_lastdattr; 1161 aoff = fp->f_lastdoff; 1162 blnum = fp->f_lastdblnum; 1163 cnum = fp->f_lastdnum; 1164 } else { 1165 attrnum = NTFS_A_INDXROOT; 1166 aoff = sizeof(struct attr_indexroot); 1167 blnum = 0; 1168 cnum = 0; 1169 } 1170 1171 do { 1172 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1173 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1174 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1175 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1176 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1177 if (error) 1178 goto fail; 1179 1180 if (attrnum == NTFS_A_INDX) { 1181 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1182 rdbuf, rdsize); 1183 if (error) 1184 goto fail; 1185 } 1186 if (aoff == 0) 1187 aoff = (attrnum == NTFS_A_INDX) ? 1188 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1189 sizeof(struct attr_indexroot); 1190 1191 iep = (struct attr_indexentry *) (rdbuf + aoff); 1192 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1193 aoff += iep->reclen, 1194 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1195 { 1196 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1197 1198 if (cnum >= num) { 1199 fp->f_lastdnum = cnum; 1200 fp->f_lastdoff = aoff; 1201 fp->f_lastdblnum = blnum; 1202 fp->f_lastdattr = attrnum; 1203 1204 *riepp = iep; 1205 1206 error = 0; 1207 goto fail; 1208 } 1209 cnum++; 1210 } 1211 1212 if (iavap) { 1213 if (attrnum == NTFS_A_INDXROOT) 1214 blnum = 0; 1215 else 1216 blnum++; 1217 1218 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1219 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1220 break; 1221 blnum++; 1222 } 1223 1224 attrnum = NTFS_A_INDX; 1225 aoff = 0; 1226 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1227 break; 1228 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1229 } 1230 } while (iavap); 1231 1232 *riepp = NULL; 1233 fp->f_lastdnum = 0; 1234 1235 fail: 1236 if (vap) 1237 ntfs_ntvattrrele(vap); 1238 if (bmvap) 1239 ntfs_ntvattrrele(bmvap); 1240 if (iavap) 1241 ntfs_ntvattrrele(iavap); 1242 if (bmp) 1243 FREE(bmp, M_TEMP); 1244 ntfs_ntput(ip); 1245 return (error); 1246 } 1247 1248 /* 1249 * Convert NTFS times that are in 100 ns units and begins from 1250 * 1601 Jan 1 into unix times. 1251 */ 1252 struct timespec 1253 ntfs_nttimetounix( 1254 u_int64_t nt) 1255 { 1256 struct timespec t; 1257 1258 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1259 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1260 t.tv_sec = nt / (1000 * 1000 * 10) - 1261 369LL * 365LL * 24LL * 60LL * 60LL - 1262 89LL * 1LL * 24LL * 60LL * 60LL; 1263 return (t); 1264 } 1265 1266 /* 1267 * Get file times from NTFS_A_NAME attribute. 1268 */ 1269 int 1270 ntfs_times( 1271 struct ntfsmount * ntmp, 1272 struct ntnode * ip, 1273 ntfs_times_t * tm) 1274 { 1275 struct ntvattr *vap; 1276 int error; 1277 1278 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1279 1280 error = ntfs_ntget(ip); 1281 if (error) 1282 return (error); 1283 1284 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1285 if (error) { 1286 ntfs_ntput(ip); 1287 return (error); 1288 } 1289 *tm = vap->va_a_name->n_times; 1290 ntfs_ntvattrrele(vap); 1291 ntfs_ntput(ip); 1292 1293 return (0); 1294 } 1295 1296 /* 1297 * Get file sizes from corresponding attribute. 1298 * 1299 * ntnode under fnode should be locked. 1300 */ 1301 int 1302 ntfs_filesize( 1303 struct ntfsmount * ntmp, 1304 struct fnode * fp, 1305 u_int64_t * size, 1306 u_int64_t * bytes) 1307 { 1308 struct ntvattr *vap; 1309 struct ntnode *ip = FTONT(fp); 1310 u_int64_t sz, bn; 1311 int error; 1312 1313 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1314 1315 error = ntfs_ntvattrget(ntmp, ip, 1316 fp->f_attrtype, fp->f_attrname, 0, &vap); 1317 if (error) 1318 return (error); 1319 1320 bn = vap->va_allocated; 1321 sz = vap->va_datalen; 1322 1323 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1324 (u_int32_t) sz, (u_int32_t) bn)); 1325 1326 if (size) 1327 *size = sz; 1328 if (bytes) 1329 *bytes = bn; 1330 1331 ntfs_ntvattrrele(vap); 1332 1333 return (0); 1334 } 1335 1336 /* 1337 * This is one of write routine. 1338 */ 1339 int 1340 ntfs_writeattr_plain( 1341 struct ntfsmount * ntmp, 1342 struct ntnode * ip, 1343 u_int32_t attrnum, 1344 char *attrname, 1345 off_t roff, 1346 size_t rsize, 1347 void *rdata, 1348 size_t * initp, 1349 struct uio *uio) 1350 { 1351 size_t init; 1352 int error = 0; 1353 off_t off = roff, left = rsize, towrite; 1354 caddr_t data = rdata; 1355 struct ntvattr *vap; 1356 *initp = 0; 1357 1358 while (left) { 1359 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1360 ntfs_btocn(off), &vap); 1361 if (error) 1362 return (error); 1363 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1364 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1365 (u_int32_t) off, (u_int32_t) towrite, 1366 (u_int32_t) vap->va_vcnstart, 1367 (u_int32_t) vap->va_vcnend)); 1368 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1369 off - ntfs_cntob(vap->va_vcnstart), 1370 towrite, data, &init, uio); 1371 if (error) { 1372 printf("ntfs_writeattr_plain: " \ 1373 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1374 (u_int32_t) off, (u_int32_t) towrite); 1375 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1376 (u_int32_t) vap->va_vcnstart, 1377 (u_int32_t) vap->va_vcnend); 1378 ntfs_ntvattrrele(vap); 1379 break; 1380 } 1381 ntfs_ntvattrrele(vap); 1382 left -= towrite; 1383 off += towrite; 1384 data = data + towrite; 1385 *initp += init; 1386 } 1387 1388 return (error); 1389 } 1390 1391 /* 1392 * This is one of write routine. 1393 * 1394 * ntnode should be locked. 1395 */ 1396 int 1397 ntfs_writentvattr_plain( 1398 struct ntfsmount * ntmp, 1399 struct ntnode * ip, 1400 struct ntvattr * vap, 1401 off_t roff, 1402 size_t rsize, 1403 void *rdata, 1404 size_t * initp, 1405 struct uio *uio) 1406 { 1407 int error = 0; 1408 int off; 1409 int cnt; 1410 cn_t ccn, ccl, cn, left, cl; 1411 caddr_t data = rdata; 1412 struct buf *bp; 1413 size_t tocopy; 1414 1415 *initp = 0; 1416 1417 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1418 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1419 return ENOTTY; 1420 } 1421 1422 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1423 vap->va_vruncnt)); 1424 1425 off = roff; 1426 left = rsize; 1427 ccl = 0; 1428 ccn = 0; 1429 cnt = 0; 1430 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1431 ccn = vap->va_vruncn[cnt]; 1432 ccl = vap->va_vruncl[cnt]; 1433 1434 ddprintf(("ntfs_writentvattr_plain: " \ 1435 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1436 (u_int32_t) left, (u_int32_t) ccn, \ 1437 (u_int32_t) ccl, (u_int32_t) off)); 1438 1439 if (ntfs_cntob(ccl) < off) { 1440 off -= ntfs_cntob(ccl); 1441 cnt++; 1442 continue; 1443 } 1444 if (!ccn && ip->i_number != NTFS_BOOTINO) 1445 continue; /* XXX */ 1446 1447 ccl -= ntfs_btocn(off); 1448 cn = ccn + ntfs_btocn(off); 1449 off = ntfs_btocnoff(off); 1450 1451 while (left && ccl) { 1452 #if defined(__DragonFly__) 1453 tocopy = min(left, 1454 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1455 #else 1456 /* under NetBSD, bread() can read 1457 * maximum one block worth of data */ 1458 tocopy = min(left, ntmp->ntm_bps - off); 1459 #endif 1460 cl = ntfs_btocl(tocopy + off); 1461 ddprintf(("ntfs_writentvattr_plain: write: " \ 1462 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1463 (u_int32_t) cn, (u_int32_t) cl, 1464 (u_int32_t) off, (u_int32_t) tocopy, 1465 (u_int32_t) left)); 1466 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1467 { 1468 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1469 ntfs_cntob(cl), 0, 0); 1470 clrbuf(bp); 1471 } else { 1472 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1473 ntfs_cntob(cl), &bp); 1474 if (error) { 1475 brelse(bp); 1476 return (error); 1477 } 1478 } 1479 if (uio) 1480 uiomove(bp->b_data + off, tocopy, uio); 1481 else 1482 memcpy(bp->b_data + off, data, tocopy); 1483 bawrite(bp); 1484 data = data + tocopy; 1485 *initp += tocopy; 1486 off = 0; 1487 left -= tocopy; 1488 cn += cl; 1489 ccl -= cl; 1490 } 1491 } 1492 1493 if (left) { 1494 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1495 error = EINVAL; 1496 } 1497 1498 return (error); 1499 } 1500 1501 /* 1502 * This is one of read routines. 1503 * 1504 * ntnode should be locked. 1505 */ 1506 int 1507 ntfs_readntvattr_plain( 1508 struct ntfsmount * ntmp, 1509 struct ntnode * ip, 1510 struct ntvattr * vap, 1511 off_t roff, 1512 size_t rsize, 1513 void *rdata, 1514 size_t * initp, 1515 struct uio *uio) 1516 { 1517 int error = 0; 1518 int off; 1519 1520 *initp = 0; 1521 if (vap->va_flag & NTFS_AF_INRUN) { 1522 int cnt; 1523 cn_t ccn, ccl, cn, left, cl; 1524 caddr_t data = rdata; 1525 struct buf *bp; 1526 size_t tocopy; 1527 1528 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1529 vap->va_vruncnt)); 1530 1531 off = roff; 1532 left = rsize; 1533 ccl = 0; 1534 ccn = 0; 1535 cnt = 0; 1536 while (left && (cnt < vap->va_vruncnt)) { 1537 ccn = vap->va_vruncn[cnt]; 1538 ccl = vap->va_vruncl[cnt]; 1539 1540 ddprintf(("ntfs_readntvattr_plain: " \ 1541 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1542 (u_int32_t) left, (u_int32_t) ccn, \ 1543 (u_int32_t) ccl, (u_int32_t) off)); 1544 1545 if (ntfs_cntob(ccl) < off) { 1546 off -= ntfs_cntob(ccl); 1547 cnt++; 1548 continue; 1549 } 1550 if (ccn || ip->i_number == NTFS_BOOTINO) { 1551 ccl -= ntfs_btocn(off); 1552 cn = ccn + ntfs_btocn(off); 1553 off = ntfs_btocnoff(off); 1554 1555 while (left && ccl) { 1556 #if defined(__DragonFly__) 1557 tocopy = min(left, 1558 min(ntfs_cntob(ccl) - off, 1559 MAXBSIZE - off)); 1560 #else 1561 /* under NetBSD, bread() can read 1562 * maximum one block worth of data */ 1563 tocopy = min(left, 1564 ntmp->ntm_bps - off); 1565 #endif 1566 cl = ntfs_btocl(tocopy + off); 1567 ddprintf(("ntfs_readntvattr_plain: " \ 1568 "read: cn: 0x%x cl: %d, " \ 1569 "off: %d len: %d, left: %d\n", 1570 (u_int32_t) cn, 1571 (u_int32_t) cl, 1572 (u_int32_t) off, 1573 (u_int32_t) tocopy, 1574 (u_int32_t) left)); 1575 error = bread(ntmp->ntm_devvp, 1576 ntfs_cntobn(cn), 1577 ntfs_cntob(cl), 1578 &bp); 1579 if (error) { 1580 brelse(bp); 1581 return (error); 1582 } 1583 if (uio) { 1584 uiomove(bp->b_data + off, 1585 tocopy, uio); 1586 } else { 1587 memcpy(data, bp->b_data + off, 1588 tocopy); 1589 } 1590 brelse(bp); 1591 data = data + tocopy; 1592 *initp += tocopy; 1593 off = 0; 1594 left -= tocopy; 1595 cn += cl; 1596 ccl -= cl; 1597 } 1598 } else { 1599 tocopy = min(left, ntfs_cntob(ccl) - off); 1600 ddprintf(("ntfs_readntvattr_plain: " 1601 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1602 " len: %d, left: %d\n", 1603 (u_int32_t) ccn, (u_int32_t) ccl, 1604 (u_int32_t) off, (u_int32_t) tocopy, 1605 (u_int32_t) left)); 1606 left -= tocopy; 1607 off = 0; 1608 if (uio) { 1609 size_t remains = tocopy; 1610 for(; remains; remains++) 1611 uiomove("", 1, uio); 1612 } else 1613 bzero(data, tocopy); 1614 data = data + tocopy; 1615 } 1616 cnt++; 1617 } 1618 if (left) { 1619 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1620 error = E2BIG; 1621 } 1622 } else { 1623 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1624 if (uio) 1625 uiomove(vap->va_datap + roff, rsize, uio); 1626 else 1627 memcpy(rdata, vap->va_datap + roff, rsize); 1628 *initp += rsize; 1629 } 1630 1631 return (error); 1632 } 1633 1634 /* 1635 * This is one of read routines. 1636 */ 1637 int 1638 ntfs_readattr_plain( 1639 struct ntfsmount * ntmp, 1640 struct ntnode * ip, 1641 u_int32_t attrnum, 1642 char *attrname, 1643 off_t roff, 1644 size_t rsize, 1645 void *rdata, 1646 size_t * initp, 1647 struct uio *uio) 1648 { 1649 size_t init; 1650 int error = 0; 1651 off_t off = roff, left = rsize, toread; 1652 caddr_t data = rdata; 1653 struct ntvattr *vap; 1654 *initp = 0; 1655 1656 while (left) { 1657 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1658 ntfs_btocn(off), &vap); 1659 if (error) 1660 return (error); 1661 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1662 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1663 (u_int32_t) off, (u_int32_t) toread, 1664 (u_int32_t) vap->va_vcnstart, 1665 (u_int32_t) vap->va_vcnend)); 1666 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1667 off - ntfs_cntob(vap->va_vcnstart), 1668 toread, data, &init, uio); 1669 if (error) { 1670 printf("ntfs_readattr_plain: " \ 1671 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1672 (u_int32_t) off, (u_int32_t) toread); 1673 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1674 (u_int32_t) vap->va_vcnstart, 1675 (u_int32_t) vap->va_vcnend); 1676 ntfs_ntvattrrele(vap); 1677 break; 1678 } 1679 ntfs_ntvattrrele(vap); 1680 left -= toread; 1681 off += toread; 1682 data = data + toread; 1683 *initp += init; 1684 } 1685 1686 return (error); 1687 } 1688 1689 /* 1690 * This is one of read routines. 1691 */ 1692 int 1693 ntfs_readattr( 1694 struct ntfsmount * ntmp, 1695 struct ntnode * ip, 1696 u_int32_t attrnum, 1697 char *attrname, 1698 off_t roff, 1699 size_t rsize, 1700 void *rdata, 1701 struct uio *uio) 1702 { 1703 int error = 0; 1704 struct ntvattr *vap; 1705 size_t init; 1706 1707 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1708 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1709 1710 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1711 if (error) 1712 return (error); 1713 1714 if ((roff > vap->va_datalen) || 1715 (roff + rsize > vap->va_datalen)) { 1716 ddprintf(("ntfs_readattr: offset too big\n")); 1717 ntfs_ntvattrrele(vap); 1718 return (E2BIG); 1719 } 1720 if (vap->va_compression && vap->va_compressalg) { 1721 u_int8_t *cup; 1722 u_int8_t *uup; 1723 off_t off = roff, left = rsize, tocopy; 1724 caddr_t data = rdata; 1725 cn_t cn; 1726 1727 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1728 vap->va_compressalg)); 1729 1730 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1731 M_NTFSDECOMP, M_WAITOK); 1732 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1733 M_NTFSDECOMP, M_WAITOK); 1734 1735 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1736 off = roff - ntfs_cntob(cn); 1737 1738 while (left) { 1739 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1740 attrname, ntfs_cntob(cn), 1741 ntfs_cntob(NTFS_COMPUNIT_CL), 1742 cup, &init, NULL); 1743 if (error) 1744 break; 1745 1746 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1747 1748 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1749 if (uio) 1750 uiomove(cup + off, tocopy, uio); 1751 else 1752 memcpy(data, cup + off, tocopy); 1753 } else if (init == 0) { 1754 if (uio) { 1755 size_t remains = tocopy; 1756 for(; remains; remains--) 1757 uiomove("", 1, uio); 1758 } 1759 else 1760 bzero(data, tocopy); 1761 } else { 1762 error = ntfs_uncompunit(ntmp, uup, cup); 1763 if (error) 1764 break; 1765 if (uio) 1766 uiomove(uup + off, tocopy, uio); 1767 else 1768 memcpy(data, uup + off, tocopy); 1769 } 1770 1771 left -= tocopy; 1772 data = data + tocopy; 1773 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1774 cn += NTFS_COMPUNIT_CL; 1775 } 1776 1777 FREE(uup, M_NTFSDECOMP); 1778 FREE(cup, M_NTFSDECOMP); 1779 } else 1780 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1781 roff, rsize, rdata, &init, uio); 1782 ntfs_ntvattrrele(vap); 1783 return (error); 1784 } 1785 1786 #if UNUSED_CODE 1787 int 1788 ntfs_parserun( 1789 cn_t * cn, 1790 cn_t * cl, 1791 u_int8_t * run, 1792 u_long len, 1793 u_long *off) 1794 { 1795 u_int8_t sz; 1796 int i; 1797 1798 if (NULL == run) { 1799 printf("ntfs_parsetun: run == NULL\n"); 1800 return (EINVAL); 1801 } 1802 sz = run[(*off)++]; 1803 if (0 == sz) { 1804 printf("ntfs_parserun: trying to go out of run\n"); 1805 return (E2BIG); 1806 } 1807 *cl = 0; 1808 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1809 printf("ntfs_parserun: " \ 1810 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1811 sz, len, *off); 1812 return (EINVAL); 1813 } 1814 for (i = 0; i < (sz & 0xF); i++) 1815 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1816 1817 sz >>= 4; 1818 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1819 printf("ntfs_parserun: " \ 1820 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1821 sz, len, *off); 1822 return (EINVAL); 1823 } 1824 for (i = 0; i < (sz & 0xF); i++) 1825 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1826 1827 return (0); 1828 } 1829 #endif 1830 1831 /* 1832 * Process fixup routine on given buffer. 1833 */ 1834 int 1835 ntfs_procfixups( 1836 struct ntfsmount * ntmp, 1837 u_int32_t magic, 1838 caddr_t buf, 1839 size_t len) 1840 { 1841 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1842 int i; 1843 u_int16_t fixup; 1844 u_int16_t *fxp; 1845 u_int16_t *cfxp; 1846 1847 if (fhp->fh_magic != magic) { 1848 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1849 fhp->fh_magic, magic); 1850 return (EINVAL); 1851 } 1852 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1853 printf("ntfs_procfixups: " \ 1854 "bad fixups number: %d for %ld bytes block\n", 1855 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1856 return (EINVAL); 1857 } 1858 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1859 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1860 return (EINVAL); 1861 } 1862 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1863 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1864 fixup = *fxp++; 1865 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1866 if (*cfxp != fixup) { 1867 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1868 return (EINVAL); 1869 } 1870 *cfxp = *fxp; 1871 ((caddr_t) cfxp) += ntmp->ntm_bps; 1872 } 1873 return (0); 1874 } 1875 1876 #if UNUSED_CODE 1877 int 1878 ntfs_runtocn( 1879 cn_t * cn, 1880 struct ntfsmount * ntmp, 1881 u_int8_t * run, 1882 u_long len, 1883 cn_t vcn) 1884 { 1885 cn_t ccn = 0; 1886 cn_t ccl = 0; 1887 u_long off = 0; 1888 int error = 0; 1889 1890 #if NTFS_DEBUG 1891 int i; 1892 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1893 run, len, (u_long) vcn); 1894 printf("ntfs_runtocn: run: "); 1895 for (i = 0; i < len; i++) 1896 printf("0x%02x ", run[i]); 1897 printf("\n"); 1898 #endif 1899 1900 if (NULL == run) { 1901 printf("ntfs_runtocn: run == NULL\n"); 1902 return (EINVAL); 1903 } 1904 do { 1905 if (run[off] == 0) { 1906 printf("ntfs_runtocn: vcn too big\n"); 1907 return (E2BIG); 1908 } 1909 vcn -= ccl; 1910 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1911 if (error) { 1912 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1913 return (error); 1914 } 1915 } while (ccl <= vcn); 1916 *cn = ccn + vcn; 1917 return (0); 1918 } 1919 #endif 1920 1921 /* 1922 * this initializes toupper table & dependant variables to be ready for 1923 * later work 1924 */ 1925 void 1926 ntfs_toupper_init() 1927 { 1928 ntfs_toupper_tab = (wchar *) NULL; 1929 lockinit(&ntfs_toupper_lock, 0, "ntfs_toupper", 0, 0); 1930 ntfs_toupper_usecount = 0; 1931 } 1932 1933 /* 1934 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1935 * otherwise read the data from the filesystem we are currently mounting 1936 */ 1937 int 1938 ntfs_toupper_use(mp, ntmp) 1939 struct mount *mp; 1940 struct ntfsmount *ntmp; 1941 { 1942 int error = 0; 1943 struct vnode *vp; 1944 1945 /* get exclusive access */ 1946 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1947 1948 /* only read the translation data from a file if it hasn't been 1949 * read already */ 1950 if (ntfs_toupper_tab) 1951 goto out; 1952 1953 /* 1954 * Read in Unicode lowercase -> uppercase translation file. 1955 * XXX for now, just the first 256 entries are used anyway, 1956 * so don't bother reading more 1957 */ 1958 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1959 M_NTFSRDATA, M_WAITOK); 1960 1961 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1962 goto out; 1963 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1964 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1965 vput(vp); 1966 1967 out: 1968 ntfs_toupper_usecount++; 1969 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1970 return (error); 1971 } 1972 1973 /* 1974 * lower the use count and if it reaches zero, free the memory 1975 * tied by toupper table 1976 */ 1977 void 1978 ntfs_toupper_unuse() 1979 { 1980 /* get exclusive access */ 1981 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1982 1983 ntfs_toupper_usecount--; 1984 if (ntfs_toupper_usecount == 0) { 1985 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1986 ntfs_toupper_tab = NULL; 1987 } 1988 #ifdef DIAGNOSTIC 1989 else if (ntfs_toupper_usecount < 0) { 1990 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1991 ntfs_toupper_usecount); 1992 } 1993 #endif 1994 1995 /* release the lock */ 1996 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1997 } 1998 1999 int 2000 ntfs_u28_init( 2001 struct ntfsmount *ntmp, 2002 wchar *u2w) 2003 { 2004 char ** u28; 2005 int i, j, h, l; 2006 2007 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2008 2009 for (i=0; i<256; i++) { 2010 h = (u2w[i] >> 8) & 0xFF; 2011 l = (u2w[i]) &0xFF; 2012 2013 if (u28[h] == NULL) { 2014 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 2015 for (j=0; j<256; j++) 2016 u28[h][j] = '_'; 2017 } 2018 2019 u28[h][l] = i & 0xFF; 2020 } 2021 2022 ntmp->ntm_u28 = u28; 2023 2024 return (0); 2025 } 2026 2027 int 2028 ntfs_u28_uninit(struct ntfsmount *ntmp) 2029 { 2030 char ** u28; 2031 int i; 2032 2033 if (ntmp->ntm_u28 == NULL) 2034 return (0); 2035 2036 u28 = ntmp->ntm_u28; 2037 2038 for (i=0; i<256; i++) 2039 if (u28[i] != NULL) 2040 FREE(u28[i], M_TEMP); 2041 2042 FREE(u28, M_TEMP); 2043 2044 return (0); 2045 } 2046 2047 int 2048 ntfs_82u_init( 2049 struct ntfsmount *ntmp, 2050 u_int16_t *u2w) 2051 { 2052 wchar * _82u; 2053 int i; 2054 2055 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 2056 2057 if (u2w == NULL) { 2058 for (i=0; i<256; i++) 2059 _82u[i] = i; 2060 } else { 2061 for (i=0; i<128; i++) 2062 _82u[i] = i; 2063 for (i=0; i<128; i++) 2064 _82u[i+128] = u2w[i]; 2065 } 2066 2067 ntmp->ntm_82u = _82u; 2068 2069 return (0); 2070 } 2071 2072 int 2073 ntfs_82u_uninit(struct ntfsmount *ntmp) 2074 { 2075 FREE(ntmp->ntm_82u, M_TEMP); 2076 return (0); 2077 } 2078 2079 /* 2080 * maps the Unicode char to 8bit equivalent 2081 * XXX currently only gets lower 8bit from the Unicode char 2082 * and substitutes a '_' for it if the result would be '\0'; 2083 * something better has to be definitely though out 2084 */ 2085 char 2086 ntfs_u28( 2087 struct ntfsmount *ntmp, 2088 wchar wc) 2089 { 2090 char * p; 2091 2092 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2093 if (p == NULL) 2094 return ('_'); 2095 return (p[wc&0xFF]); 2096 } 2097 2098