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 1.6 2003/07/19 21:14:46 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/ntfs.h> 51 #include <ntfs/ntfsmount.h> 52 #include <ntfs/ntfs_inode.h> 53 #include <ntfs/ntfs_vfsops.h> 54 #include <ntfs/ntfs_subr.h> 55 #include <ntfs/ntfs_compr.h> 56 #include <ntfs/ntfs_ihash.h> 57 58 #if defined(__FreeBSD__) 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 __P((struct ntfsmount *, const char *, int, int *, char **)); 66 static int ntfs_findvattr __P((struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t)); 67 static int ntfs_uastricmp __P((struct ntfsmount *, const wchar *, size_t, const char *, size_t)); 68 static int ntfs_uastrcmp __P((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 dprintf(("ntfs_ntget: get ntnode %d: %p, usecount: %d\n", 360 ip->i_number, ip, ip->i_usecount)); 361 362 lwkt_gettoken(&ip->i_interlock); 363 ip->i_usecount++; 364 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE | LK_INTERLOCK, &ip->i_interlock); 365 366 return 0; 367 } 368 369 /* 370 * Routine search ntnode in hash, if found: lock, inc usecount and return. 371 * If not in hash allocate structure for ntnode, prefill it, lock, 372 * inc count and return. 373 * 374 * ntnode returned locked 375 */ 376 int 377 ntfs_ntlookup( 378 struct ntfsmount * ntmp, 379 ino_t ino, 380 struct ntnode ** ipp) 381 { 382 struct ntnode *ip; 383 384 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 385 386 do { 387 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) { 388 ntfs_ntget(ip); 389 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 390 ino, ip, ip->i_usecount)); 391 *ipp = ip; 392 return (0); 393 } 394 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL)); 395 396 MALLOC(ip, struct ntnode *, sizeof(struct ntnode), 397 M_NTFSNTNODE, M_WAITOK); 398 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 399 bzero((caddr_t) ip, sizeof(struct ntnode)); 400 401 /* Generic initialization */ 402 ip->i_devvp = ntmp->ntm_devvp; 403 ip->i_dev = ntmp->ntm_dev; 404 ip->i_number = ino; 405 ip->i_mp = ntmp; 406 407 LIST_INIT(&ip->i_fnlist); 408 VREF(ip->i_devvp); 409 410 /* init lock and lock the newborn ntnode */ 411 lockinit(&ip->i_lock, 0, "ntnode", 0, LK_EXCLUSIVE); 412 lwkt_inittoken(&ip->i_interlock); 413 ntfs_ntget(ip); 414 415 ntfs_nthashins(ip); 416 417 LOCKMGR(&ntfs_hashlock, LK_RELEASE, NULL); 418 419 *ipp = ip; 420 421 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 422 ino, ip, ip->i_usecount)); 423 424 return (0); 425 } 426 427 /* 428 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 429 * deallocate ntnode. 430 * 431 * ntnode should be locked on entry, and unlocked on return. 432 */ 433 void 434 ntfs_ntput(ip) 435 struct ntnode *ip; 436 { 437 struct ntvattr *vap; 438 439 dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n", 440 ip->i_number, ip, ip->i_usecount)); 441 442 lwkt_gettoken(&ip->i_interlock); 443 ip->i_usecount--; 444 445 #ifdef DIAGNOSTIC 446 if (ip->i_usecount < 0) { 447 panic("ntfs_ntput: ino: %d usecount: %d \n", 448 ip->i_number,ip->i_usecount); 449 } 450 #endif 451 452 if (ip->i_usecount > 0) { 453 LOCKMGR(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock); 454 return; 455 } 456 457 dprintf(("ntfs_ntput: deallocating ntnode: %d\n", ip->i_number)); 458 459 if (ip->i_fnlist.lh_first) 460 panic("ntfs_ntput: ntnode has fnodes\n"); 461 462 ntfs_nthashrem(ip); 463 464 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 465 LIST_REMOVE(vap,va_list); 466 ntfs_freentvattr(vap); 467 } 468 469 vrele(ip->i_devvp); 470 FREE(ip, M_NTFSNTNODE); 471 } 472 473 /* 474 * increment usecount of ntnode 475 */ 476 void 477 ntfs_ntref(ip) 478 struct ntnode *ip; 479 { 480 lwkt_gettoken(&ip->i_interlock); 481 ip->i_usecount++; 482 lwkt_reltoken(&ip->i_interlock); 483 484 dprintf(("ntfs_ntref: ino %d, usecount: %d\n", 485 ip->i_number, ip->i_usecount)); 486 487 } 488 489 /* 490 * Decrement usecount of ntnode. 491 */ 492 void 493 ntfs_ntrele(ip) 494 struct ntnode *ip; 495 { 496 dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n", 497 ip->i_number, ip, ip->i_usecount)); 498 499 lwkt_gettoken(&ip->i_interlock); 500 ip->i_usecount--; 501 502 if (ip->i_usecount < 0) 503 panic("ntfs_ntrele: ino: %d usecount: %d \n", 504 ip->i_number,ip->i_usecount); 505 lwkt_reltoken(&ip->i_interlock); 506 } 507 508 /* 509 * Deallocate all memory allocated for ntvattr 510 */ 511 void 512 ntfs_freentvattr(vap) 513 struct ntvattr * vap; 514 { 515 if (vap->va_flag & NTFS_AF_INRUN) { 516 if (vap->va_vruncn) 517 FREE(vap->va_vruncn, M_NTFSRUN); 518 if (vap->va_vruncl) 519 FREE(vap->va_vruncl, M_NTFSRUN); 520 } else { 521 if (vap->va_datap) 522 FREE(vap->va_datap, M_NTFSRDATA); 523 } 524 FREE(vap, M_NTFSNTVATTR); 525 } 526 527 /* 528 * Convert disk image of attribute into ntvattr structure, 529 * runs are expanded also. 530 */ 531 int 532 ntfs_attrtontvattr( 533 struct ntfsmount * ntmp, 534 struct ntvattr ** rvapp, 535 struct attr * rap) 536 { 537 int error, i; 538 struct ntvattr *vap; 539 540 error = 0; 541 *rvapp = NULL; 542 543 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 544 M_NTFSNTVATTR, M_WAITOK); 545 bzero(vap, sizeof(struct ntvattr)); 546 vap->va_ip = NULL; 547 vap->va_flag = rap->a_hdr.a_flag; 548 vap->va_type = rap->a_hdr.a_type; 549 vap->va_compression = rap->a_hdr.a_compression; 550 vap->va_index = rap->a_hdr.a_index; 551 552 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 553 554 vap->va_namelen = rap->a_hdr.a_namelen; 555 if (rap->a_hdr.a_namelen) { 556 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 557 ddprintf((", name:[")); 558 for (i = 0; i < vap->va_namelen; i++) { 559 vap->va_name[i] = unp[i]; 560 ddprintf(("%c", vap->va_name[i])); 561 } 562 ddprintf(("]")); 563 } 564 if (vap->va_flag & NTFS_AF_INRUN) { 565 ddprintf((", nonres.")); 566 vap->va_datalen = rap->a_nr.a_datalen; 567 vap->va_allocated = rap->a_nr.a_allocated; 568 vap->va_vcnstart = rap->a_nr.a_vcnstart; 569 vap->va_vcnend = rap->a_nr.a_vcnend; 570 vap->va_compressalg = rap->a_nr.a_compressalg; 571 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 572 &(vap->va_vruncnt), 573 (caddr_t) rap + rap->a_nr.a_dataoff); 574 } else { 575 vap->va_compressalg = 0; 576 ddprintf((", res.")); 577 vap->va_datalen = rap->a_r.a_datalen; 578 vap->va_allocated = rap->a_r.a_datalen; 579 vap->va_vcnstart = 0; 580 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 581 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 582 M_NTFSRDATA, M_WAITOK); 583 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 584 rap->a_r.a_datalen); 585 } 586 ddprintf((", len: %d", vap->va_datalen)); 587 588 if (error) 589 FREE(vap, M_NTFSNTVATTR); 590 else 591 *rvapp = vap; 592 593 ddprintf(("\n")); 594 595 return (error); 596 } 597 598 /* 599 * Expand run into more utilizable and more memory eating format. 600 */ 601 int 602 ntfs_runtovrun( 603 cn_t ** rcnp, 604 cn_t ** rclp, 605 u_long * rcntp, 606 u_int8_t * run) 607 { 608 u_int32_t off; 609 u_int32_t sz, i; 610 cn_t *cn; 611 cn_t *cl; 612 u_long cnt; 613 cn_t prev; 614 cn_t tmp; 615 616 off = 0; 617 cnt = 0; 618 i = 0; 619 while (run[off]) { 620 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 621 cnt++; 622 } 623 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 624 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 625 626 off = 0; 627 cnt = 0; 628 prev = 0; 629 while (run[off]) { 630 631 sz = run[off++]; 632 cl[cnt] = 0; 633 634 for (i = 0; i < (sz & 0xF); i++) 635 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 636 637 sz >>= 4; 638 if (run[off + sz - 1] & 0x80) { 639 tmp = ((u_int64_t) - 1) << (sz << 3); 640 for (i = 0; i < sz; i++) 641 tmp |= (u_int64_t) run[off++] << (i << 3); 642 } else { 643 tmp = 0; 644 for (i = 0; i < sz; i++) 645 tmp |= (u_int64_t) run[off++] << (i << 3); 646 } 647 if (tmp) 648 prev = cn[cnt] = prev + tmp; 649 else 650 cn[cnt] = tmp; 651 652 cnt++; 653 } 654 *rcnp = cn; 655 *rclp = cl; 656 *rcntp = cnt; 657 return (0); 658 } 659 660 /* 661 * Compare unicode and ascii string case insens. 662 */ 663 static int 664 ntfs_uastricmp(ntmp, ustr, ustrlen, astr, astrlen) 665 struct ntfsmount *ntmp; 666 const wchar *ustr; 667 size_t ustrlen; 668 const char *astr; 669 size_t astrlen; 670 { 671 size_t i; 672 int res; 673 674 /* 675 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 676 * symbols not covered by translation table 677 */ 678 for (i = 0; i < ustrlen && i < astrlen; i++) { 679 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) - 680 ((int)NTFS_TOUPPER(NTFS_82U(astr[i]))); 681 if (res) 682 return res; 683 } 684 return (ustrlen - astrlen); 685 } 686 687 /* 688 * Compare unicode and ascii string case sens. 689 */ 690 static int 691 ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 692 struct ntfsmount *ntmp; 693 const wchar *ustr; 694 size_t ustrlen; 695 const char *astr; 696 size_t astrlen; 697 { 698 size_t i; 699 int res; 700 701 for (i = 0; (i < ustrlen) && (i < astrlen); i++) { 702 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]); 703 if (res) 704 return res; 705 } 706 return (ustrlen - astrlen); 707 } 708 709 /* 710 * Search fnode in ntnode, if not found allocate and preinitialize. 711 * 712 * ntnode should be locked on entry. 713 */ 714 int 715 ntfs_fget( 716 struct ntfsmount *ntmp, 717 struct ntnode *ip, 718 int attrtype, 719 char *attrname, 720 struct fnode **fpp) 721 { 722 struct fnode *fp; 723 724 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 725 ip->i_number,attrtype, attrname?attrname:"")); 726 *fpp = NULL; 727 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 728 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 729 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 730 731 if ((attrtype == fp->f_attrtype) && 732 ((!attrname && !fp->f_attrname) || 733 (attrname && fp->f_attrname && 734 !strcmp(attrname,fp->f_attrname)))){ 735 dprintf(("ntfs_fget: found existed: %p\n",fp)); 736 *fpp = fp; 737 } 738 } 739 740 if (*fpp) 741 return (0); 742 743 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK); 744 bzero(fp, sizeof(struct fnode)); 745 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 746 747 fp->f_ip = ip; 748 if (attrname) { 749 fp->f_flag |= FN_AATTRNAME; 750 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 751 strcpy(fp->f_attrname, attrname); 752 } else 753 fp->f_attrname = NULL; 754 fp->f_attrtype = attrtype; 755 756 ntfs_ntref(ip); 757 758 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 759 760 *fpp = fp; 761 762 return (0); 763 } 764 765 /* 766 * Deallocate fnode, remove it from ntnode's fnode list. 767 * 768 * ntnode should be locked. 769 */ 770 void 771 ntfs_frele( 772 struct fnode *fp) 773 { 774 struct ntnode *ip = FTONT(fp); 775 776 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 777 778 dprintf(("ntfs_frele: deallocating fnode\n")); 779 LIST_REMOVE(fp,f_fnlist); 780 if (fp->f_flag & FN_AATTRNAME) 781 FREE(fp->f_attrname, M_TEMP); 782 if (fp->f_dirblbuf) 783 FREE(fp->f_dirblbuf, M_NTFSDIR); 784 FREE(fp, M_NTFSFNODE); 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 $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 792 */ 793 static int 794 ntfs_ntlookupattr( 795 struct ntfsmount * ntmp, 796 const char * name, 797 int namelen, 798 int *attrtype, 799 char **attrname) 800 { 801 const char *sys; 802 size_t syslen, i; 803 struct ntvattrdef *adp; 804 805 if (namelen == 0) 806 return (0); 807 808 if (name[0] == '$') { 809 sys = name; 810 for (syslen = 0; syslen < namelen; syslen++) { 811 if(sys[syslen] == ':') { 812 name++; 813 namelen--; 814 break; 815 } 816 } 817 name += syslen; 818 namelen -= syslen; 819 820 adp = ntmp->ntm_ad; 821 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 822 if (syslen != adp->ad_namelen || 823 strncmp(sys, adp->ad_name, syslen) != 0) 824 continue; 825 826 *attrtype = adp->ad_type; 827 goto out; 828 } 829 return (ENOENT); 830 } else 831 *attrtype = NTFS_A_DATA; 832 833 out: 834 if (namelen) { 835 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 836 memcpy((*attrname), name, namelen); 837 (*attrname)[namelen] = '\0'; 838 } 839 840 return (0); 841 } 842 843 /* 844 * Lookup specifed node for filename, matching cnp, 845 * return fnode filled. 846 */ 847 int 848 ntfs_ntlookupfile( 849 struct ntfsmount * ntmp, 850 struct vnode * vp, 851 struct componentname * cnp, 852 struct vnode ** vpp) 853 { 854 struct fnode *fp = VTOF(vp); 855 struct ntnode *ip = FTONT(fp); 856 struct ntvattr *vap; /* Root attribute */ 857 cn_t cn; /* VCN in current attribute */ 858 caddr_t rdbuf; /* Buffer to read directory's blocks */ 859 u_int32_t blsize; 860 u_int32_t rdsize; /* Length of data to read from current block */ 861 struct attr_indexentry *iep; 862 int error, res, anamelen, fnamelen; 863 const char *fname,*aname; 864 u_int32_t aoff; 865 int attrtype = NTFS_A_DATA; 866 char *attrname = NULL; 867 struct fnode *nfp; 868 struct vnode *nvp; 869 enum vtype f_type; 870 871 error = ntfs_ntget(ip); 872 if (error) 873 return (error); 874 875 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 876 if (error || (vap->va_flag & NTFS_AF_INRUN)) 877 return (ENOTDIR); 878 879 blsize = vap->va_a_iroot->ir_size; 880 rdsize = vap->va_datalen; 881 882 /* 883 * Divide file name into: foofilefoofilefoofile[:attrspec] 884 * Store like this: fname:fnamelen [aname:anamelen] 885 */ 886 fname = cnp->cn_nameptr; 887 aname = NULL; 888 anamelen = 0; 889 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 890 if(fname[fnamelen] == ':') { 891 aname = fname + fnamelen + 1; 892 anamelen = cnp->cn_namelen - fnamelen - 1; 893 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 894 fname, fnamelen, aname, anamelen)); 895 break; 896 } 897 898 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 899 900 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 901 902 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 903 0, rdsize, rdbuf, NULL); 904 if (error) 905 goto fail; 906 907 aoff = sizeof(struct attr_indexroot); 908 909 do { 910 iep = (struct attr_indexentry *) (rdbuf + aoff); 911 912 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 913 aoff += iep->reclen, 914 iep = (struct attr_indexentry *) (rdbuf + aoff)) 915 { 916 ddprintf(("scan: %d, %d\n", 917 (u_int32_t) iep->ie_number, 918 (u_int32_t) iep->ie_fnametype)); 919 920 /* check the name - the case-insensitible check 921 * has to come first, to break from this for loop 922 * if needed, so we can dive correctly */ 923 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 924 fname, fnamelen); 925 if (res > 0) break; 926 if (res < 0) continue; 927 928 if (iep->ie_fnametype == 0 || 929 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 930 { 931 res = NTFS_UASTRCMP(iep->ie_fname, 932 iep->ie_fnamelen, fname, fnamelen); 933 if (res != 0) continue; 934 } 935 936 if (aname) { 937 error = ntfs_ntlookupattr(ntmp, 938 aname, anamelen, 939 &attrtype, &attrname); 940 if (error) 941 goto fail; 942 } 943 944 /* Check if we've found ourself */ 945 if ((iep->ie_number == ip->i_number) && 946 (attrtype == fp->f_attrtype) && 947 ((!attrname && !fp->f_attrname) || 948 (attrname && fp->f_attrname && 949 !strcmp(attrname, fp->f_attrname)))) 950 { 951 VREF(vp); 952 *vpp = vp; 953 error = 0; 954 goto fail; 955 } 956 957 /* vget node, but don't load it */ 958 error = ntfs_vgetex(ntmp->ntm_mountp, 959 iep->ie_number, attrtype, attrname, 960 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 961 curthread, &nvp); 962 963 /* free the buffer returned by ntfs_ntlookupattr() */ 964 if (attrname) { 965 FREE(attrname, M_TEMP); 966 attrname = NULL; 967 } 968 969 if (error) 970 goto fail; 971 972 nfp = VTOF(nvp); 973 974 if (nfp->f_flag & FN_VALID) { 975 *vpp = nvp; 976 goto fail; 977 } 978 979 nfp->f_fflag = iep->ie_fflag; 980 nfp->f_pnumber = iep->ie_fpnumber; 981 nfp->f_times = iep->ie_ftimes; 982 983 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 984 (nfp->f_attrtype == NTFS_A_DATA) && 985 (nfp->f_attrname == NULL)) 986 f_type = VDIR; 987 else 988 f_type = VREG; 989 990 nvp->v_type = f_type; 991 992 if ((nfp->f_attrtype == NTFS_A_DATA) && 993 (nfp->f_attrname == NULL)) 994 { 995 /* Opening default attribute */ 996 nfp->f_size = iep->ie_fsize; 997 nfp->f_allocated = iep->ie_fallocated; 998 nfp->f_flag |= FN_PRELOADED; 999 } else { 1000 error = ntfs_filesize(ntmp, nfp, 1001 &nfp->f_size, &nfp->f_allocated); 1002 if (error) { 1003 vput(nvp); 1004 goto fail; 1005 } 1006 } 1007 1008 nfp->f_flag &= ~FN_VALID; 1009 *vpp = nvp; 1010 goto fail; 1011 } 1012 1013 /* Dive if possible */ 1014 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1015 dprintf(("ntfs_ntlookupfile: diving\n")); 1016 1017 cn = *(cn_t *) (rdbuf + aoff + 1018 iep->reclen - sizeof(cn_t)); 1019 rdsize = blsize; 1020 1021 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1022 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1023 if (error) 1024 goto fail; 1025 1026 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1027 rdbuf, rdsize); 1028 if (error) 1029 goto fail; 1030 1031 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1032 0x18); 1033 } else { 1034 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1035 error = ENOENT; 1036 break; 1037 } 1038 } while (1); 1039 1040 dprintf(("finish\n")); 1041 1042 fail: 1043 if (attrname) FREE(attrname, M_TEMP); 1044 ntfs_ntvattrrele(vap); 1045 ntfs_ntput(ip); 1046 FREE(rdbuf, M_TEMP); 1047 return (error); 1048 } 1049 1050 /* 1051 * Check if name type is permitted to show. 1052 */ 1053 int 1054 ntfs_isnamepermitted( 1055 struct ntfsmount * ntmp, 1056 struct attr_indexentry * iep) 1057 { 1058 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1059 return 1; 1060 1061 switch (iep->ie_fnametype) { 1062 case 2: 1063 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1064 return 0; 1065 case 0: case 1: case 3: 1066 return 1; 1067 default: 1068 printf("ntfs_isnamepermitted: " \ 1069 "WARNING! Unknown file name type: %d\n", 1070 iep->ie_fnametype); 1071 break; 1072 } 1073 return 0; 1074 } 1075 1076 /* 1077 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1078 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1079 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1080 * fnode, so we can skip toward record number num almost immediatly. 1081 * Anyway this is rather slow routine. The problem is that we don't know 1082 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1083 */ 1084 int 1085 ntfs_ntreaddir( 1086 struct ntfsmount * ntmp, 1087 struct fnode * fp, 1088 u_int32_t num, 1089 struct attr_indexentry ** riepp) 1090 { 1091 struct ntnode *ip = FTONT(fp); 1092 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1093 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1094 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1095 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1096 u_char *bmp = NULL; /* Bitmap */ 1097 u_int32_t blsize; /* Index allocation size (2048) */ 1098 u_int32_t rdsize; /* Length of data to read */ 1099 u_int32_t attrnum; /* Current attribute type */ 1100 u_int32_t cpbl = 1; /* Clusters per directory block */ 1101 u_int32_t blnum; 1102 struct attr_indexentry *iep; 1103 int error = ENOENT; 1104 u_int32_t aoff, cnum; 1105 1106 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1107 error = ntfs_ntget(ip); 1108 if (error) 1109 return (error); 1110 1111 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1112 if (error) 1113 return (ENOTDIR); 1114 1115 if (fp->f_dirblbuf == NULL) { 1116 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1117 MALLOC(fp->f_dirblbuf, caddr_t, 1118 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1119 } 1120 1121 blsize = fp->f_dirblsz; 1122 rdbuf = fp->f_dirblbuf; 1123 1124 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1125 1126 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1127 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1128 0, &bmvap); 1129 if (error) { 1130 error = ENOTDIR; 1131 goto fail; 1132 } 1133 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1134 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1135 bmvap->va_datalen, bmp, NULL); 1136 if (error) 1137 goto fail; 1138 1139 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1140 0, &iavap); 1141 if (error) { 1142 error = ENOTDIR; 1143 goto fail; 1144 } 1145 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1146 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1147 iavap->va_datalen, cpbl)); 1148 } else { 1149 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1150 iavap = bmvap = NULL; 1151 bmp = NULL; 1152 } 1153 1154 /* Try use previous values */ 1155 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1156 attrnum = fp->f_lastdattr; 1157 aoff = fp->f_lastdoff; 1158 blnum = fp->f_lastdblnum; 1159 cnum = fp->f_lastdnum; 1160 } else { 1161 attrnum = NTFS_A_INDXROOT; 1162 aoff = sizeof(struct attr_indexroot); 1163 blnum = 0; 1164 cnum = 0; 1165 } 1166 1167 do { 1168 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1169 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1170 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1171 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1172 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1173 if (error) 1174 goto fail; 1175 1176 if (attrnum == NTFS_A_INDX) { 1177 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1178 rdbuf, rdsize); 1179 if (error) 1180 goto fail; 1181 } 1182 if (aoff == 0) 1183 aoff = (attrnum == NTFS_A_INDX) ? 1184 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1185 sizeof(struct attr_indexroot); 1186 1187 iep = (struct attr_indexentry *) (rdbuf + aoff); 1188 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1189 aoff += iep->reclen, 1190 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1191 { 1192 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1193 1194 if (cnum >= num) { 1195 fp->f_lastdnum = cnum; 1196 fp->f_lastdoff = aoff; 1197 fp->f_lastdblnum = blnum; 1198 fp->f_lastdattr = attrnum; 1199 1200 *riepp = iep; 1201 1202 error = 0; 1203 goto fail; 1204 } 1205 cnum++; 1206 } 1207 1208 if (iavap) { 1209 if (attrnum == NTFS_A_INDXROOT) 1210 blnum = 0; 1211 else 1212 blnum++; 1213 1214 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1215 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1216 break; 1217 blnum++; 1218 } 1219 1220 attrnum = NTFS_A_INDX; 1221 aoff = 0; 1222 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1223 break; 1224 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1225 } 1226 } while (iavap); 1227 1228 *riepp = NULL; 1229 fp->f_lastdnum = 0; 1230 1231 fail: 1232 if (vap) 1233 ntfs_ntvattrrele(vap); 1234 if (bmvap) 1235 ntfs_ntvattrrele(bmvap); 1236 if (iavap) 1237 ntfs_ntvattrrele(iavap); 1238 if (bmp) 1239 FREE(bmp, M_TEMP); 1240 ntfs_ntput(ip); 1241 return (error); 1242 } 1243 1244 /* 1245 * Convert NTFS times that are in 100 ns units and begins from 1246 * 1601 Jan 1 into unix times. 1247 */ 1248 struct timespec 1249 ntfs_nttimetounix( 1250 u_int64_t nt) 1251 { 1252 struct timespec t; 1253 1254 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1255 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1256 t.tv_sec = nt / (1000 * 1000 * 10) - 1257 369LL * 365LL * 24LL * 60LL * 60LL - 1258 89LL * 1LL * 24LL * 60LL * 60LL; 1259 return (t); 1260 } 1261 1262 /* 1263 * Get file times from NTFS_A_NAME attribute. 1264 */ 1265 int 1266 ntfs_times( 1267 struct ntfsmount * ntmp, 1268 struct ntnode * ip, 1269 ntfs_times_t * tm) 1270 { 1271 struct ntvattr *vap; 1272 int error; 1273 1274 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1275 1276 error = ntfs_ntget(ip); 1277 if (error) 1278 return (error); 1279 1280 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1281 if (error) { 1282 ntfs_ntput(ip); 1283 return (error); 1284 } 1285 *tm = vap->va_a_name->n_times; 1286 ntfs_ntvattrrele(vap); 1287 ntfs_ntput(ip); 1288 1289 return (0); 1290 } 1291 1292 /* 1293 * Get file sizes from corresponding attribute. 1294 * 1295 * ntnode under fnode should be locked. 1296 */ 1297 int 1298 ntfs_filesize( 1299 struct ntfsmount * ntmp, 1300 struct fnode * fp, 1301 u_int64_t * size, 1302 u_int64_t * bytes) 1303 { 1304 struct ntvattr *vap; 1305 struct ntnode *ip = FTONT(fp); 1306 u_int64_t sz, bn; 1307 int error; 1308 1309 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1310 1311 error = ntfs_ntvattrget(ntmp, ip, 1312 fp->f_attrtype, fp->f_attrname, 0, &vap); 1313 if (error) 1314 return (error); 1315 1316 bn = vap->va_allocated; 1317 sz = vap->va_datalen; 1318 1319 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1320 (u_int32_t) sz, (u_int32_t) bn)); 1321 1322 if (size) 1323 *size = sz; 1324 if (bytes) 1325 *bytes = bn; 1326 1327 ntfs_ntvattrrele(vap); 1328 1329 return (0); 1330 } 1331 1332 /* 1333 * This is one of write routine. 1334 */ 1335 int 1336 ntfs_writeattr_plain( 1337 struct ntfsmount * ntmp, 1338 struct ntnode * ip, 1339 u_int32_t attrnum, 1340 char *attrname, 1341 off_t roff, 1342 size_t rsize, 1343 void *rdata, 1344 size_t * initp, 1345 struct uio *uio) 1346 { 1347 size_t init; 1348 int error = 0; 1349 off_t off = roff, left = rsize, towrite; 1350 caddr_t data = rdata; 1351 struct ntvattr *vap; 1352 *initp = 0; 1353 1354 while (left) { 1355 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1356 ntfs_btocn(off), &vap); 1357 if (error) 1358 return (error); 1359 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1360 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1361 (u_int32_t) off, (u_int32_t) towrite, 1362 (u_int32_t) vap->va_vcnstart, 1363 (u_int32_t) vap->va_vcnend)); 1364 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1365 off - ntfs_cntob(vap->va_vcnstart), 1366 towrite, data, &init, uio); 1367 if (error) { 1368 printf("ntfs_writeattr_plain: " \ 1369 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1370 (u_int32_t) off, (u_int32_t) towrite); 1371 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1372 (u_int32_t) vap->va_vcnstart, 1373 (u_int32_t) vap->va_vcnend); 1374 ntfs_ntvattrrele(vap); 1375 break; 1376 } 1377 ntfs_ntvattrrele(vap); 1378 left -= towrite; 1379 off += towrite; 1380 data = data + towrite; 1381 *initp += init; 1382 } 1383 1384 return (error); 1385 } 1386 1387 /* 1388 * This is one of write routine. 1389 * 1390 * ntnode should be locked. 1391 */ 1392 int 1393 ntfs_writentvattr_plain( 1394 struct ntfsmount * ntmp, 1395 struct ntnode * ip, 1396 struct ntvattr * vap, 1397 off_t roff, 1398 size_t rsize, 1399 void *rdata, 1400 size_t * initp, 1401 struct uio *uio) 1402 { 1403 int error = 0; 1404 int off; 1405 int cnt; 1406 cn_t ccn, ccl, cn, left, cl; 1407 caddr_t data = rdata; 1408 struct buf *bp; 1409 size_t tocopy; 1410 1411 *initp = 0; 1412 1413 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1414 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1415 return ENOTTY; 1416 } 1417 1418 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1419 vap->va_vruncnt)); 1420 1421 off = roff; 1422 left = rsize; 1423 ccl = 0; 1424 ccn = 0; 1425 cnt = 0; 1426 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1427 ccn = vap->va_vruncn[cnt]; 1428 ccl = vap->va_vruncl[cnt]; 1429 1430 ddprintf(("ntfs_writentvattr_plain: " \ 1431 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1432 (u_int32_t) left, (u_int32_t) ccn, \ 1433 (u_int32_t) ccl, (u_int32_t) off)); 1434 1435 if (ntfs_cntob(ccl) < off) { 1436 off -= ntfs_cntob(ccl); 1437 cnt++; 1438 continue; 1439 } 1440 if (!ccn && ip->i_number != NTFS_BOOTINO) 1441 continue; /* XXX */ 1442 1443 ccl -= ntfs_btocn(off); 1444 cn = ccn + ntfs_btocn(off); 1445 off = ntfs_btocnoff(off); 1446 1447 while (left && ccl) { 1448 #if defined(__FreeBSD__) 1449 tocopy = min(left, 1450 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1451 #else 1452 /* under NetBSD, bread() can read 1453 * maximum one block worth of data */ 1454 tocopy = min(left, ntmp->ntm_bps - off); 1455 #endif 1456 cl = ntfs_btocl(tocopy + off); 1457 ddprintf(("ntfs_writentvattr_plain: write: " \ 1458 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1459 (u_int32_t) cn, (u_int32_t) cl, 1460 (u_int32_t) off, (u_int32_t) tocopy, 1461 (u_int32_t) left)); 1462 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1463 { 1464 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1465 ntfs_cntob(cl), 0, 0); 1466 clrbuf(bp); 1467 } else { 1468 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1469 ntfs_cntob(cl), &bp); 1470 if (error) { 1471 brelse(bp); 1472 return (error); 1473 } 1474 } 1475 if (uio) 1476 uiomove(bp->b_data + off, tocopy, uio); 1477 else 1478 memcpy(bp->b_data + off, data, tocopy); 1479 bawrite(bp); 1480 data = data + tocopy; 1481 *initp += tocopy; 1482 off = 0; 1483 left -= tocopy; 1484 cn += cl; 1485 ccl -= cl; 1486 } 1487 } 1488 1489 if (left) { 1490 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1491 error = EINVAL; 1492 } 1493 1494 return (error); 1495 } 1496 1497 /* 1498 * This is one of read routines. 1499 * 1500 * ntnode should be locked. 1501 */ 1502 int 1503 ntfs_readntvattr_plain( 1504 struct ntfsmount * ntmp, 1505 struct ntnode * ip, 1506 struct ntvattr * vap, 1507 off_t roff, 1508 size_t rsize, 1509 void *rdata, 1510 size_t * initp, 1511 struct uio *uio) 1512 { 1513 int error = 0; 1514 int off; 1515 1516 *initp = 0; 1517 if (vap->va_flag & NTFS_AF_INRUN) { 1518 int cnt; 1519 cn_t ccn, ccl, cn, left, cl; 1520 caddr_t data = rdata; 1521 struct buf *bp; 1522 size_t tocopy; 1523 1524 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1525 vap->va_vruncnt)); 1526 1527 off = roff; 1528 left = rsize; 1529 ccl = 0; 1530 ccn = 0; 1531 cnt = 0; 1532 while (left && (cnt < vap->va_vruncnt)) { 1533 ccn = vap->va_vruncn[cnt]; 1534 ccl = vap->va_vruncl[cnt]; 1535 1536 ddprintf(("ntfs_readntvattr_plain: " \ 1537 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1538 (u_int32_t) left, (u_int32_t) ccn, \ 1539 (u_int32_t) ccl, (u_int32_t) off)); 1540 1541 if (ntfs_cntob(ccl) < off) { 1542 off -= ntfs_cntob(ccl); 1543 cnt++; 1544 continue; 1545 } 1546 if (ccn || ip->i_number == NTFS_BOOTINO) { 1547 ccl -= ntfs_btocn(off); 1548 cn = ccn + ntfs_btocn(off); 1549 off = ntfs_btocnoff(off); 1550 1551 while (left && ccl) { 1552 #if defined(__FreeBSD__) 1553 tocopy = min(left, 1554 min(ntfs_cntob(ccl) - off, 1555 MAXBSIZE - off)); 1556 #else 1557 /* under NetBSD, bread() can read 1558 * maximum one block worth of data */ 1559 tocopy = min(left, 1560 ntmp->ntm_bps - off); 1561 #endif 1562 cl = ntfs_btocl(tocopy + off); 1563 ddprintf(("ntfs_readntvattr_plain: " \ 1564 "read: cn: 0x%x cl: %d, " \ 1565 "off: %d len: %d, left: %d\n", 1566 (u_int32_t) cn, 1567 (u_int32_t) cl, 1568 (u_int32_t) off, 1569 (u_int32_t) tocopy, 1570 (u_int32_t) left)); 1571 error = bread(ntmp->ntm_devvp, 1572 ntfs_cntobn(cn), 1573 ntfs_cntob(cl), 1574 &bp); 1575 if (error) { 1576 brelse(bp); 1577 return (error); 1578 } 1579 if (uio) { 1580 uiomove(bp->b_data + off, 1581 tocopy, uio); 1582 } else { 1583 memcpy(data, bp->b_data + off, 1584 tocopy); 1585 } 1586 brelse(bp); 1587 data = data + tocopy; 1588 *initp += tocopy; 1589 off = 0; 1590 left -= tocopy; 1591 cn += cl; 1592 ccl -= cl; 1593 } 1594 } else { 1595 tocopy = min(left, ntfs_cntob(ccl) - off); 1596 ddprintf(("ntfs_readntvattr_plain: " 1597 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1598 " len: %d, left: %d\n", 1599 (u_int32_t) ccn, (u_int32_t) ccl, 1600 (u_int32_t) off, (u_int32_t) tocopy, 1601 (u_int32_t) left)); 1602 left -= tocopy; 1603 off = 0; 1604 if (uio) { 1605 size_t remains = tocopy; 1606 for(; remains; remains++) 1607 uiomove("", 1, uio); 1608 } else 1609 bzero(data, tocopy); 1610 data = data + tocopy; 1611 } 1612 cnt++; 1613 } 1614 if (left) { 1615 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1616 error = E2BIG; 1617 } 1618 } else { 1619 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1620 if (uio) 1621 uiomove(vap->va_datap + roff, rsize, uio); 1622 else 1623 memcpy(rdata, vap->va_datap + roff, rsize); 1624 *initp += rsize; 1625 } 1626 1627 return (error); 1628 } 1629 1630 /* 1631 * This is one of read routines. 1632 */ 1633 int 1634 ntfs_readattr_plain( 1635 struct ntfsmount * ntmp, 1636 struct ntnode * ip, 1637 u_int32_t attrnum, 1638 char *attrname, 1639 off_t roff, 1640 size_t rsize, 1641 void *rdata, 1642 size_t * initp, 1643 struct uio *uio) 1644 { 1645 size_t init; 1646 int error = 0; 1647 off_t off = roff, left = rsize, toread; 1648 caddr_t data = rdata; 1649 struct ntvattr *vap; 1650 *initp = 0; 1651 1652 while (left) { 1653 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1654 ntfs_btocn(off), &vap); 1655 if (error) 1656 return (error); 1657 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1658 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1659 (u_int32_t) off, (u_int32_t) toread, 1660 (u_int32_t) vap->va_vcnstart, 1661 (u_int32_t) vap->va_vcnend)); 1662 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1663 off - ntfs_cntob(vap->va_vcnstart), 1664 toread, data, &init, uio); 1665 if (error) { 1666 printf("ntfs_readattr_plain: " \ 1667 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1668 (u_int32_t) off, (u_int32_t) toread); 1669 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1670 (u_int32_t) vap->va_vcnstart, 1671 (u_int32_t) vap->va_vcnend); 1672 ntfs_ntvattrrele(vap); 1673 break; 1674 } 1675 ntfs_ntvattrrele(vap); 1676 left -= toread; 1677 off += toread; 1678 data = data + toread; 1679 *initp += init; 1680 } 1681 1682 return (error); 1683 } 1684 1685 /* 1686 * This is one of read routines. 1687 */ 1688 int 1689 ntfs_readattr( 1690 struct ntfsmount * ntmp, 1691 struct ntnode * ip, 1692 u_int32_t attrnum, 1693 char *attrname, 1694 off_t roff, 1695 size_t rsize, 1696 void *rdata, 1697 struct uio *uio) 1698 { 1699 int error = 0; 1700 struct ntvattr *vap; 1701 size_t init; 1702 1703 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1704 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1705 1706 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1707 if (error) 1708 return (error); 1709 1710 if ((roff > vap->va_datalen) || 1711 (roff + rsize > vap->va_datalen)) { 1712 ddprintf(("ntfs_readattr: offset too big\n")); 1713 ntfs_ntvattrrele(vap); 1714 return (E2BIG); 1715 } 1716 if (vap->va_compression && vap->va_compressalg) { 1717 u_int8_t *cup; 1718 u_int8_t *uup; 1719 off_t off = roff, left = rsize, tocopy; 1720 caddr_t data = rdata; 1721 cn_t cn; 1722 1723 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1724 vap->va_compressalg)); 1725 1726 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1727 M_NTFSDECOMP, M_WAITOK); 1728 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1729 M_NTFSDECOMP, M_WAITOK); 1730 1731 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1732 off = roff - ntfs_cntob(cn); 1733 1734 while (left) { 1735 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1736 attrname, ntfs_cntob(cn), 1737 ntfs_cntob(NTFS_COMPUNIT_CL), 1738 cup, &init, NULL); 1739 if (error) 1740 break; 1741 1742 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1743 1744 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1745 if (uio) 1746 uiomove(cup + off, tocopy, uio); 1747 else 1748 memcpy(data, cup + off, tocopy); 1749 } else if (init == 0) { 1750 if (uio) { 1751 size_t remains = tocopy; 1752 for(; remains; remains--) 1753 uiomove("", 1, uio); 1754 } 1755 else 1756 bzero(data, tocopy); 1757 } else { 1758 error = ntfs_uncompunit(ntmp, uup, cup); 1759 if (error) 1760 break; 1761 if (uio) 1762 uiomove(uup + off, tocopy, uio); 1763 else 1764 memcpy(data, uup + off, tocopy); 1765 } 1766 1767 left -= tocopy; 1768 data = data + tocopy; 1769 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1770 cn += NTFS_COMPUNIT_CL; 1771 } 1772 1773 FREE(uup, M_NTFSDECOMP); 1774 FREE(cup, M_NTFSDECOMP); 1775 } else 1776 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1777 roff, rsize, rdata, &init, uio); 1778 ntfs_ntvattrrele(vap); 1779 return (error); 1780 } 1781 1782 #if UNUSED_CODE 1783 int 1784 ntfs_parserun( 1785 cn_t * cn, 1786 cn_t * cl, 1787 u_int8_t * run, 1788 u_long len, 1789 u_long *off) 1790 { 1791 u_int8_t sz; 1792 int i; 1793 1794 if (NULL == run) { 1795 printf("ntfs_parsetun: run == NULL\n"); 1796 return (EINVAL); 1797 } 1798 sz = run[(*off)++]; 1799 if (0 == sz) { 1800 printf("ntfs_parserun: trying to go out of run\n"); 1801 return (E2BIG); 1802 } 1803 *cl = 0; 1804 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1805 printf("ntfs_parserun: " \ 1806 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1807 sz, len, *off); 1808 return (EINVAL); 1809 } 1810 for (i = 0; i < (sz & 0xF); i++) 1811 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1812 1813 sz >>= 4; 1814 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1815 printf("ntfs_parserun: " \ 1816 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1817 sz, len, *off); 1818 return (EINVAL); 1819 } 1820 for (i = 0; i < (sz & 0xF); i++) 1821 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1822 1823 return (0); 1824 } 1825 #endif 1826 1827 /* 1828 * Process fixup routine on given buffer. 1829 */ 1830 int 1831 ntfs_procfixups( 1832 struct ntfsmount * ntmp, 1833 u_int32_t magic, 1834 caddr_t buf, 1835 size_t len) 1836 { 1837 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1838 int i; 1839 u_int16_t fixup; 1840 u_int16_t *fxp; 1841 u_int16_t *cfxp; 1842 1843 if (fhp->fh_magic != magic) { 1844 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1845 fhp->fh_magic, magic); 1846 return (EINVAL); 1847 } 1848 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1849 printf("ntfs_procfixups: " \ 1850 "bad fixups number: %d for %ld bytes block\n", 1851 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1852 return (EINVAL); 1853 } 1854 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1855 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1856 return (EINVAL); 1857 } 1858 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1859 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1860 fixup = *fxp++; 1861 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1862 if (*cfxp != fixup) { 1863 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1864 return (EINVAL); 1865 } 1866 *cfxp = *fxp; 1867 ((caddr_t) cfxp) += ntmp->ntm_bps; 1868 } 1869 return (0); 1870 } 1871 1872 #if UNUSED_CODE 1873 int 1874 ntfs_runtocn( 1875 cn_t * cn, 1876 struct ntfsmount * ntmp, 1877 u_int8_t * run, 1878 u_long len, 1879 cn_t vcn) 1880 { 1881 cn_t ccn = 0; 1882 cn_t ccl = 0; 1883 u_long off = 0; 1884 int error = 0; 1885 1886 #if NTFS_DEBUG 1887 int i; 1888 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1889 run, len, (u_long) vcn); 1890 printf("ntfs_runtocn: run: "); 1891 for (i = 0; i < len; i++) 1892 printf("0x%02x ", run[i]); 1893 printf("\n"); 1894 #endif 1895 1896 if (NULL == run) { 1897 printf("ntfs_runtocn: run == NULL\n"); 1898 return (EINVAL); 1899 } 1900 do { 1901 if (run[off] == 0) { 1902 printf("ntfs_runtocn: vcn too big\n"); 1903 return (E2BIG); 1904 } 1905 vcn -= ccl; 1906 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1907 if (error) { 1908 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1909 return (error); 1910 } 1911 } while (ccl <= vcn); 1912 *cn = ccn + vcn; 1913 return (0); 1914 } 1915 #endif 1916 1917 /* 1918 * this initializes toupper table & dependant variables to be ready for 1919 * later work 1920 */ 1921 void 1922 ntfs_toupper_init() 1923 { 1924 ntfs_toupper_tab = (wchar *) NULL; 1925 lockinit(&ntfs_toupper_lock, 0, "ntfs_toupper", 0, 0); 1926 ntfs_toupper_usecount = 0; 1927 } 1928 1929 /* 1930 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1931 * otherwise read the data from the filesystem we are currently mounting 1932 */ 1933 int 1934 ntfs_toupper_use(mp, ntmp) 1935 struct mount *mp; 1936 struct ntfsmount *ntmp; 1937 { 1938 int error = 0; 1939 struct vnode *vp; 1940 1941 /* get exclusive access */ 1942 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1943 1944 /* only read the translation data from a file if it hasn't been 1945 * read already */ 1946 if (ntfs_toupper_tab) 1947 goto out; 1948 1949 /* 1950 * Read in Unicode lowercase -> uppercase translation file. 1951 * XXX for now, just the first 256 entries are used anyway, 1952 * so don't bother reading more 1953 */ 1954 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1955 M_NTFSRDATA, M_WAITOK); 1956 1957 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1958 goto out; 1959 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1960 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1961 vput(vp); 1962 1963 out: 1964 ntfs_toupper_usecount++; 1965 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1966 return (error); 1967 } 1968 1969 /* 1970 * lower the use count and if it reaches zero, free the memory 1971 * tied by toupper table 1972 */ 1973 void 1974 ntfs_toupper_unuse() 1975 { 1976 /* get exclusive access */ 1977 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1978 1979 ntfs_toupper_usecount--; 1980 if (ntfs_toupper_usecount == 0) { 1981 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1982 ntfs_toupper_tab = NULL; 1983 } 1984 #ifdef DIAGNOSTIC 1985 else if (ntfs_toupper_usecount < 0) { 1986 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1987 ntfs_toupper_usecount); 1988 } 1989 #endif 1990 1991 /* release the lock */ 1992 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1993 } 1994 1995 int 1996 ntfs_u28_init( 1997 struct ntfsmount *ntmp, 1998 wchar *u2w) 1999 { 2000 char ** u28; 2001 int i, j, h, l; 2002 2003 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2004 2005 for (i=0; i<256; i++) { 2006 h = (u2w[i] >> 8) & 0xFF; 2007 l = (u2w[i]) &0xFF; 2008 2009 if (u28[h] == NULL) { 2010 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 2011 for (j=0; j<256; j++) 2012 u28[h][j] = '_'; 2013 } 2014 2015 u28[h][l] = i & 0xFF; 2016 } 2017 2018 ntmp->ntm_u28 = u28; 2019 2020 return (0); 2021 } 2022 2023 int 2024 ntfs_u28_uninit(struct ntfsmount *ntmp) 2025 { 2026 char ** u28; 2027 int i; 2028 2029 if (ntmp->ntm_u28 == NULL) 2030 return (0); 2031 2032 u28 = ntmp->ntm_u28; 2033 2034 for (i=0; i<256; i++) 2035 if (u28[i] != NULL) 2036 FREE(u28[i], M_TEMP); 2037 2038 FREE(u28, M_TEMP); 2039 2040 return (0); 2041 } 2042 2043 int 2044 ntfs_82u_init( 2045 struct ntfsmount *ntmp, 2046 u_int16_t *u2w) 2047 { 2048 wchar * _82u; 2049 int i; 2050 2051 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 2052 2053 if (u2w == NULL) { 2054 for (i=0; i<256; i++) 2055 _82u[i] = i; 2056 } else { 2057 for (i=0; i<128; i++) 2058 _82u[i] = i; 2059 for (i=0; i<128; i++) 2060 _82u[i+128] = u2w[i]; 2061 } 2062 2063 ntmp->ntm_82u = _82u; 2064 2065 return (0); 2066 } 2067 2068 int 2069 ntfs_82u_uninit(struct ntfsmount *ntmp) 2070 { 2071 FREE(ntmp->ntm_82u, M_TEMP); 2072 return (0); 2073 } 2074 2075 /* 2076 * maps the Unicode char to 8bit equivalent 2077 * XXX currently only gets lower 8bit from the Unicode char 2078 * and substitutes a '_' for it if the result would be '\0'; 2079 * something better has to be definitely though out 2080 */ 2081 char 2082 ntfs_u28( 2083 struct ntfsmount *ntmp, 2084 wchar wc) 2085 { 2086 char * p; 2087 2088 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2089 if (p == NULL) 2090 return ('_'); 2091 return (p[wc&0xFF]); 2092 } 2093 2094