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 1.20 2006/03/24 18:35:34 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 #include <sys/spinlock.h> 45 #include <sys/spinlock2.h> 46 47 #include <machine/inttypes.h> 48 49 #if defined(__NetBSD__) 50 #include <miscfs/specfs/specdev.h> 51 #endif 52 53 /* #define NTFS_DEBUG 1 */ 54 #include "ntfs.h" 55 #include "ntfsmount.h" 56 #include "ntfs_inode.h" 57 #include "ntfs_vfsops.h" 58 #include "ntfs_subr.h" 59 #include "ntfs_compr.h" 60 #include "ntfs_ihash.h" 61 62 #if defined(__DragonFly__) 63 MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information"); 64 MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data"); 65 MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage"); 66 MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary"); 67 #endif 68 69 static int ntfs_ntlookupattr (struct ntfsmount *, const char *, int, int *, char **); 70 static int ntfs_findvattr (struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t); 71 static int ntfs_uastricmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t); 72 static int ntfs_uastrcmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t); 73 74 /* table for mapping Unicode chars into uppercase; it's filled upon first 75 * ntfs mount, freed upon last ntfs umount */ 76 static wchar *ntfs_toupper_tab; 77 #define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)]) 78 static struct lock ntfs_toupper_lock; 79 static signed int ntfs_toupper_usecount; 80 81 /* support macro for ntfs_ntvattrget() */ 82 #define NTFS_AALPCMP(aalp,type,name,namelen) ( \ 83 (aalp->al_type == type) && (aalp->al_namelen == namelen) && \ 84 !NTFS_UASTRCMP(aalp->al_name,aalp->al_namelen,name,namelen) ) 85 86 /* 87 * 88 */ 89 int 90 ntfs_ntvattrrele(struct ntvattr *vap) 91 { 92 dprintf(("ntfs_ntvattrrele: ino: %"PRId64", type: 0x%x\n", 93 vap->va_ip->i_number, vap->va_type)); 94 95 ntfs_ntrele(vap->va_ip); 96 97 return (0); 98 } 99 100 /* 101 * find the attribute in the ntnode 102 */ 103 static int 104 ntfs_findvattr(struct ntfsmount *ntmp, struct ntnode *ip, 105 struct ntvattr **lvapp, struct ntvattr **vapp, u_int32_t type, 106 const char *name, size_t namelen, cn_t vcn) 107 { 108 int error; 109 struct ntvattr *vap; 110 111 if((ip->i_flag & IN_LOADED) == 0) { 112 dprintf(("ntfs_findvattr: node not loaded, ino: %"PRId64"\n", 113 ip->i_number)); 114 error = ntfs_loadntnode(ntmp,ip); 115 if (error) { 116 printf("ntfs_findvattr: FAILED TO LOAD INO: %"PRId64"\n", 117 ip->i_number); 118 return (error); 119 } 120 } 121 122 *lvapp = NULL; 123 *vapp = NULL; 124 for (vap = ip->i_valist.lh_first; vap; vap = vap->va_list.le_next) { 125 ddprintf(("ntfs_findvattr: type: 0x%x, vcn: %d - %d\n", \ 126 vap->va_type, (u_int32_t) vap->va_vcnstart, \ 127 (u_int32_t) vap->va_vcnend)); 128 if ((vap->va_type == type) && 129 (vap->va_vcnstart <= vcn) && (vap->va_vcnend >= vcn) && 130 (vap->va_namelen == namelen) && 131 (strncmp(name, vap->va_name, namelen) == 0)) { 132 *vapp = vap; 133 ntfs_ntref(vap->va_ip); 134 return (0); 135 } 136 if (vap->va_type == NTFS_A_ATTRLIST) 137 *lvapp = vap; 138 } 139 140 return (-1); 141 } 142 143 /* 144 * Search attribute specifed in ntnode (load ntnode if nessecary). 145 * If not found but ATTR_A_ATTRLIST present, read it in and search throught. 146 * VOP_VGET node needed, and lookup througth it's ntnode (load if nessesary). 147 * 148 * ntnode should be locked 149 */ 150 int 151 ntfs_ntvattrget(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t type, 152 const char *name, cn_t vcn, struct ntvattr **vapp) 153 { 154 struct ntvattr *lvap = NULL; 155 struct attr_attrlist *aalp; 156 struct attr_attrlist *nextaalp; 157 struct vnode *newvp; 158 struct ntnode *newip; 159 caddr_t alpool; 160 size_t namelen, len; 161 int error; 162 163 *vapp = NULL; 164 165 if (name) { 166 dprintf(("ntfs_ntvattrget: " \ 167 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \ 168 ip->i_number, type, name, (u_int32_t) vcn)); 169 namelen = strlen(name); 170 } else { 171 dprintf(("ntfs_ntvattrget: " \ 172 "ino: %"PRId64", type: 0x%x, vcn: %d\n", \ 173 ip->i_number, type, (u_int32_t) vcn)); 174 name = ""; 175 namelen = 0; 176 } 177 178 error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn); 179 if (error >= 0) 180 return (error); 181 182 if (!lvap) { 183 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 184 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \ 185 ip->i_number, type, name, (u_int32_t) vcn)); 186 return (ENOENT); 187 } 188 /* Scan $ATTRIBUTE_LIST for requested attribute */ 189 len = lvap->va_datalen; 190 MALLOC(alpool, caddr_t, len, M_TEMP, M_WAITOK); 191 error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len, 192 NULL); 193 if (error) 194 goto out; 195 196 aalp = (struct attr_attrlist *) alpool; 197 nextaalp = NULL; 198 199 for(; len > 0; aalp = nextaalp) { 200 dprintf(("ntfs_ntvattrget: " \ 201 "attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \ 202 aalp->al_inumber, aalp->al_type, \ 203 (u_int32_t) aalp->al_vcnstart)); 204 205 if (len > aalp->reclen) { 206 nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *); 207 } else { 208 nextaalp = NULL; 209 } 210 len -= aalp->reclen; 211 212 if (!NTFS_AALPCMP(aalp, type, name, namelen) || 213 (nextaalp && (nextaalp->al_vcnstart <= vcn) && 214 NTFS_AALPCMP(nextaalp, type, name, namelen))) 215 continue; 216 217 dprintf(("ntfs_ntvattrget: attribute in ino: %d\n", 218 aalp->al_inumber)); 219 220 /* this is not a main record, so we can't use just plain 221 vget() */ 222 error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber, 223 NTFS_A_DATA, NULL, LK_EXCLUSIVE, 224 VG_EXT, curthread, &newvp); 225 if (error) { 226 printf("ntfs_ntvattrget: CAN'T VGET INO: %d\n", 227 aalp->al_inumber); 228 goto out; 229 } 230 newip = VTONT(newvp); 231 /* XXX have to lock ntnode */ 232 error = ntfs_findvattr(ntmp, newip, &lvap, vapp, 233 type, name, namelen, vcn); 234 vput(newvp); 235 if (error == 0) 236 goto out; 237 printf("ntfs_ntvattrget: ATTRLIST ERROR.\n"); 238 break; 239 } 240 error = ENOENT; 241 242 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 243 "ino: %"PRId64", type: 0x%x, name: %.*s, vcn: %d\n", \ 244 ip->i_number, type, (int) namelen, name, (u_int32_t) vcn)); 245 out: 246 FREE(alpool, M_TEMP); 247 return (error); 248 } 249 250 /* 251 * Read ntnode from disk, make ntvattr list. 252 * 253 * ntnode should be locked 254 */ 255 int 256 ntfs_loadntnode(struct ntfsmount *ntmp, struct ntnode *ip) 257 { 258 struct filerec *mfrp; 259 daddr_t bn; 260 int error,off; 261 struct attr *ap; 262 struct ntvattr *nvap; 263 264 dprintf(("ntfs_loadntnode: loading ino: %"PRId64"\n",ip->i_number)); 265 266 MALLOC(mfrp, struct filerec *, ntfs_bntob(ntmp->ntm_bpmftrec), 267 M_TEMP, M_WAITOK); 268 269 if (ip->i_number < NTFS_SYSNODESNUM) { 270 struct buf *bp; 271 272 dprintf(("ntfs_loadntnode: read system node\n")); 273 274 bn = ntfs_cntobn(ntmp->ntm_mftcn) + 275 ntmp->ntm_bpmftrec * ip->i_number; 276 277 error = bread(ntmp->ntm_devvp, 278 ntfs_bntodoff(bn), ntfs_bntob(ntmp->ntm_bpmftrec), &bp); 279 if (error) { 280 printf("ntfs_loadntnode: BREAD FAILED\n"); 281 brelse(bp); 282 goto out; 283 } 284 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec)); 285 bqrelse(bp); 286 } else { 287 struct vnode *vp; 288 289 vp = ntmp->ntm_sysvn[NTFS_MFTINO]; 290 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 291 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec), 292 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL); 293 if (error) { 294 printf("ntfs_loadntnode: ntfs_readattr failed\n"); 295 goto out; 296 } 297 } 298 299 /* Check if magic and fixups are correct */ 300 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp, 301 ntfs_bntob(ntmp->ntm_bpmftrec)); 302 if (error) { 303 printf("ntfs_loadntnode: BAD MFT RECORD %"PRId64"\n", 304 ip->i_number); 305 goto out; 306 } 307 308 dprintf(("ntfs_loadntnode: load attrs for ino: %"PRId64"\n",ip->i_number)); 309 off = mfrp->fr_attroff; 310 ap = (struct attr *) ((caddr_t)mfrp + off); 311 312 LIST_INIT(&ip->i_valist); 313 314 while (ap->a_hdr.a_type != -1) { 315 error = ntfs_attrtontvattr(ntmp, &nvap, ap); 316 if (error) 317 break; 318 nvap->va_ip = ip; 319 320 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list); 321 322 off += ap->a_hdr.reclen; 323 ap = (struct attr *) ((caddr_t)mfrp + off); 324 } 325 if (error) { 326 printf("ntfs_loadntnode: failed to load attr ino: %"PRId64"\n", 327 ip->i_number); 328 goto out; 329 } 330 331 ip->i_mainrec = mfrp->fr_mainrec; 332 ip->i_nlink = mfrp->fr_nlink; 333 ip->i_frflag = mfrp->fr_flags; 334 335 ip->i_flag |= IN_LOADED; 336 337 out: 338 FREE(mfrp, M_TEMP); 339 return (error); 340 } 341 342 /* 343 * Routine locks ntnode and increase usecount, just opposite of 344 * ntfs_ntput(). 345 */ 346 int 347 ntfs_ntget(struct ntnode *ip) 348 { 349 dprintf(("ntfs_ntget: get ntnode %"PRId64": %p, usecount: %d\n", 350 ip->i_number, ip, ip->i_usecount)); 351 352 ip->i_usecount++; /* ZZZ */ 353 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE, NULL); 354 355 return 0; 356 } 357 358 /* 359 * Routine search ntnode in hash, if found: lock, inc usecount and return. 360 * If not in hash allocate structure for ntnode, prefill it, lock, 361 * inc count and return. 362 * 363 * ntnode returned locked 364 */ 365 int 366 ntfs_ntlookup(struct ntfsmount *ntmp, ino_t ino, struct ntnode **ipp) 367 { 368 struct ntnode *ip; 369 370 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 371 372 do { 373 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) { 374 ntfs_ntget(ip); 375 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 376 ino, ip, ip->i_usecount)); 377 *ipp = ip; 378 return (0); 379 } 380 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL)); 381 382 MALLOC(ip, struct ntnode *, sizeof(struct ntnode), 383 M_NTFSNTNODE, M_WAITOK); 384 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 385 bzero((caddr_t) ip, sizeof(struct ntnode)); 386 387 /* Generic initialization */ 388 ip->i_devvp = ntmp->ntm_devvp; 389 ip->i_dev = ntmp->ntm_dev; 390 ip->i_number = ino; 391 ip->i_mp = ntmp; 392 393 LIST_INIT(&ip->i_fnlist); 394 vref(ip->i_devvp); 395 396 /* init lock and lock the newborn ntnode */ 397 lockinit(&ip->i_lock, "ntnode", 0, LK_EXCLUSIVE); 398 spin_init(&ip->i_interlock); 399 ntfs_ntget(ip); 400 401 ntfs_nthashins(ip); 402 403 LOCKMGR(&ntfs_hashlock, LK_RELEASE, NULL); 404 405 *ipp = ip; 406 407 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 408 ino, ip, ip->i_usecount)); 409 410 return (0); 411 } 412 413 /* 414 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 415 * deallocate ntnode. 416 * 417 * ntnode should be locked on entry, and unlocked on return. 418 */ 419 void 420 ntfs_ntput(struct ntnode *ip) 421 { 422 struct ntvattr *vap; 423 424 dprintf(("ntfs_ntput: rele ntnode %"PRId64": %p, usecount: %d\n", 425 ip->i_number, ip, ip->i_usecount)); 426 427 spin_lock(&ip->i_interlock); 428 ip->i_usecount--; 429 430 #ifdef DIAGNOSTIC 431 if (ip->i_usecount < 0) { 432 spin_unlock(&ip->i_interlock); 433 panic("ntfs_ntput: ino: %"PRId64" usecount: %d \n", 434 ip->i_number,ip->i_usecount); 435 } 436 #endif 437 438 if (ip->i_usecount > 0) { 439 LOCKMGR(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock); 440 return; 441 } 442 443 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number)); 444 445 if (ip->i_fnlist.lh_first) { 446 spin_unlock(&ip->i_interlock); 447 panic("ntfs_ntput: ntnode has fnodes\n"); 448 } 449 450 /* 451 * XXX this is a bit iffy because we are making high level calls 452 * while holding a spinlock. 453 */ 454 ntfs_nthashrem(ip); 455 456 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 457 LIST_REMOVE(vap,va_list); 458 ntfs_freentvattr(vap); 459 } 460 spin_unlock(&ip->i_interlock); 461 vrele(ip->i_devvp); 462 FREE(ip, M_NTFSNTNODE); 463 } 464 465 /* 466 * increment usecount of ntnode 467 */ 468 void 469 ntfs_ntref(struct ntnode *ip) 470 { 471 ip->i_usecount++; 472 473 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n", 474 ip->i_number, ip->i_usecount)); 475 476 } 477 478 /* 479 * Decrement usecount of ntnode. 480 */ 481 void 482 ntfs_ntrele(struct ntnode *ip) 483 { 484 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n", 485 ip->i_number, ip, ip->i_usecount)); 486 487 spin_lock(&ip->i_interlock); 488 ip->i_usecount--; 489 490 if (ip->i_usecount < 0) { 491 spin_unlock(&ip->i_interlock); 492 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d \n", 493 ip->i_number,ip->i_usecount); 494 } 495 spin_unlock(&ip->i_interlock); 496 } 497 498 /* 499 * Deallocate all memory allocated for ntvattr 500 */ 501 void 502 ntfs_freentvattr(struct ntvattr *vap) 503 { 504 if (vap->va_flag & NTFS_AF_INRUN) { 505 if (vap->va_vruncn) 506 FREE(vap->va_vruncn, M_NTFSRUN); 507 if (vap->va_vruncl) 508 FREE(vap->va_vruncl, M_NTFSRUN); 509 } else { 510 if (vap->va_datap) 511 FREE(vap->va_datap, M_NTFSRDATA); 512 } 513 FREE(vap, M_NTFSNTVATTR); 514 } 515 516 /* 517 * Convert disk image of attribute into ntvattr structure, 518 * runs are expanded also. 519 */ 520 int 521 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp, 522 struct attr *rap) 523 { 524 int error, i; 525 struct ntvattr *vap; 526 527 error = 0; 528 *rvapp = NULL; 529 530 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 531 M_NTFSNTVATTR, M_WAITOK); 532 bzero(vap, sizeof(struct ntvattr)); 533 vap->va_ip = NULL; 534 vap->va_flag = rap->a_hdr.a_flag; 535 vap->va_type = rap->a_hdr.a_type; 536 vap->va_compression = rap->a_hdr.a_compression; 537 vap->va_index = rap->a_hdr.a_index; 538 539 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 540 541 vap->va_namelen = rap->a_hdr.a_namelen; 542 if (rap->a_hdr.a_namelen) { 543 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 544 ddprintf((", name:[")); 545 for (i = 0; i < vap->va_namelen; i++) { 546 vap->va_name[i] = unp[i]; 547 ddprintf(("%c", vap->va_name[i])); 548 } 549 ddprintf(("]")); 550 } 551 if (vap->va_flag & NTFS_AF_INRUN) { 552 ddprintf((", nonres.")); 553 vap->va_datalen = rap->a_nr.a_datalen; 554 vap->va_allocated = rap->a_nr.a_allocated; 555 vap->va_vcnstart = rap->a_nr.a_vcnstart; 556 vap->va_vcnend = rap->a_nr.a_vcnend; 557 vap->va_compressalg = rap->a_nr.a_compressalg; 558 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 559 &(vap->va_vruncnt), 560 (caddr_t) rap + rap->a_nr.a_dataoff); 561 } else { 562 vap->va_compressalg = 0; 563 ddprintf((", res.")); 564 vap->va_datalen = rap->a_r.a_datalen; 565 vap->va_allocated = rap->a_r.a_datalen; 566 vap->va_vcnstart = 0; 567 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 568 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 569 M_NTFSRDATA, M_WAITOK); 570 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 571 rap->a_r.a_datalen); 572 } 573 ddprintf((", len: %d", vap->va_datalen)); 574 575 if (error) 576 FREE(vap, M_NTFSNTVATTR); 577 else 578 *rvapp = vap; 579 580 ddprintf(("\n")); 581 582 return (error); 583 } 584 585 /* 586 * Expand run into more utilizable and more memory eating format. 587 */ 588 int 589 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run) 590 { 591 u_int32_t off; 592 u_int32_t sz, i; 593 cn_t *cn; 594 cn_t *cl; 595 u_long cnt; 596 cn_t prev; 597 cn_t tmp; 598 599 off = 0; 600 cnt = 0; 601 i = 0; 602 while (run[off]) { 603 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 604 cnt++; 605 } 606 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 607 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 608 609 off = 0; 610 cnt = 0; 611 prev = 0; 612 while (run[off]) { 613 614 sz = run[off++]; 615 cl[cnt] = 0; 616 617 for (i = 0; i < (sz & 0xF); i++) 618 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 619 620 sz >>= 4; 621 if (run[off + sz - 1] & 0x80) { 622 tmp = ((u_int64_t) - 1) << (sz << 3); 623 for (i = 0; i < sz; i++) 624 tmp |= (u_int64_t) run[off++] << (i << 3); 625 } else { 626 tmp = 0; 627 for (i = 0; i < sz; i++) 628 tmp |= (u_int64_t) run[off++] << (i << 3); 629 } 630 if (tmp) 631 prev = cn[cnt] = prev + tmp; 632 else 633 cn[cnt] = tmp; 634 635 cnt++; 636 } 637 *rcnp = cn; 638 *rclp = cl; 639 *rcntp = cnt; 640 return (0); 641 } 642 643 /* 644 * Compare unicode and ascii string case insens. 645 */ 646 static int 647 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 648 const char *astr, size_t astrlen) 649 { 650 size_t i; 651 int res; 652 653 /* 654 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 655 * symbols not covered by translation table 656 */ 657 for (i = 0; i < ustrlen && i < astrlen; i++) { 658 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) - 659 ((int)NTFS_TOUPPER(NTFS_82U(astr[i]))); 660 if (res) 661 return res; 662 } 663 return (ustrlen - astrlen); 664 } 665 666 /* 667 * Compare unicode and ascii string case sens. 668 */ 669 static int 670 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 671 const char *astr, size_t astrlen) 672 { 673 size_t i; 674 int res; 675 676 for (i = 0; (i < ustrlen) && (i < astrlen); i++) { 677 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]); 678 if (res) 679 return res; 680 } 681 return (ustrlen - astrlen); 682 } 683 684 /* 685 * Search fnode in ntnode, if not found allocate and preinitialize. 686 * 687 * ntnode should be locked on entry. 688 */ 689 int 690 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype, 691 char *attrname, struct fnode **fpp) 692 { 693 struct fnode *fp; 694 695 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n", 696 ip->i_number,attrtype, attrname?attrname:"")); 697 *fpp = NULL; 698 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 699 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 700 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 701 702 if ((attrtype == fp->f_attrtype) && 703 ((!attrname && !fp->f_attrname) || 704 (attrname && fp->f_attrname && 705 !strcmp(attrname,fp->f_attrname)))){ 706 dprintf(("ntfs_fget: found existed: %p\n",fp)); 707 *fpp = fp; 708 } 709 } 710 711 if (*fpp) 712 return (0); 713 714 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK); 715 bzero(fp, sizeof(struct fnode)); 716 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 717 718 fp->f_ip = ip; 719 if (attrname) { 720 fp->f_flag |= FN_AATTRNAME; 721 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 722 strcpy(fp->f_attrname, attrname); 723 } else 724 fp->f_attrname = NULL; 725 fp->f_attrtype = attrtype; 726 727 ntfs_ntref(ip); 728 729 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 730 731 *fpp = fp; 732 733 return (0); 734 } 735 736 /* 737 * Deallocate fnode, remove it from ntnode's fnode list. 738 * 739 * ntnode should be locked. 740 */ 741 void 742 ntfs_frele(struct fnode *fp) 743 { 744 struct ntnode *ip = FTONT(fp); 745 746 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip)); 747 748 dprintf(("ntfs_frele: deallocating fnode\n")); 749 LIST_REMOVE(fp,f_fnlist); 750 if (fp->f_flag & FN_AATTRNAME) 751 FREE(fp->f_attrname, M_TEMP); 752 if (fp->f_dirblbuf) 753 FREE(fp->f_dirblbuf, M_NTFSDIR); 754 FREE(fp, M_NTFSFNODE); 755 ntfs_ntrele(ip); 756 } 757 758 /* 759 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 760 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 761 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 762 */ 763 static int 764 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen, 765 int *attrtype, char **attrname) 766 { 767 const char *sys; 768 size_t syslen, i; 769 struct ntvattrdef *adp; 770 771 if (namelen == 0) 772 return (0); 773 774 if (name[0] == '$') { 775 sys = name; 776 for (syslen = 0; syslen < namelen; syslen++) { 777 if(sys[syslen] == ':') { 778 name++; 779 namelen--; 780 break; 781 } 782 } 783 name += syslen; 784 namelen -= syslen; 785 786 adp = ntmp->ntm_ad; 787 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 788 if (syslen != adp->ad_namelen || 789 strncmp(sys, adp->ad_name, syslen) != 0) 790 continue; 791 792 *attrtype = adp->ad_type; 793 goto out; 794 } 795 return (ENOENT); 796 } else 797 *attrtype = NTFS_A_DATA; 798 799 out: 800 if (namelen) { 801 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 802 memcpy((*attrname), name, namelen); 803 (*attrname)[namelen] = '\0'; 804 } 805 806 return (0); 807 } 808 809 /* 810 * Lookup specifed node for filename, matching cnp, 811 * return fnode filled. 812 */ 813 int 814 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp, 815 struct componentname *cnp, struct vnode **vpp) 816 { 817 struct fnode *fp = VTOF(vp); 818 struct ntnode *ip = FTONT(fp); 819 struct ntvattr *vap; /* Root attribute */ 820 cn_t cn; /* VCN in current attribute */ 821 caddr_t rdbuf; /* Buffer to read directory's blocks */ 822 u_int32_t blsize; 823 u_int32_t rdsize; /* Length of data to read from current block */ 824 struct attr_indexentry *iep; 825 int error, res, anamelen, fnamelen; 826 const char *fname,*aname; 827 u_int32_t aoff; 828 int attrtype = NTFS_A_DATA; 829 char *attrname = NULL; 830 struct fnode *nfp; 831 struct vnode *nvp; 832 enum vtype f_type; 833 834 error = ntfs_ntget(ip); 835 if (error) 836 return (error); 837 838 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 839 if (error || (vap->va_flag & NTFS_AF_INRUN)) 840 return (ENOTDIR); 841 842 blsize = vap->va_a_iroot->ir_size; 843 rdsize = vap->va_datalen; 844 845 /* 846 * Divide file name into: foofilefoofilefoofile[:attrspec] 847 * Store like this: fname:fnamelen [aname:anamelen] 848 */ 849 fname = cnp->cn_nameptr; 850 aname = NULL; 851 anamelen = 0; 852 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 853 if(fname[fnamelen] == ':') { 854 aname = fname + fnamelen + 1; 855 anamelen = cnp->cn_namelen - fnamelen - 1; 856 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 857 fname, fnamelen, aname, anamelen)); 858 break; 859 } 860 861 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 862 863 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 864 865 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 866 0, rdsize, rdbuf, NULL); 867 if (error) 868 goto fail; 869 870 aoff = sizeof(struct attr_indexroot); 871 872 do { 873 iep = (struct attr_indexentry *) (rdbuf + aoff); 874 875 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 876 aoff += iep->reclen, 877 iep = (struct attr_indexentry *) (rdbuf + aoff)) 878 { 879 ddprintf(("scan: %d, %d\n", 880 (u_int32_t) iep->ie_number, 881 (u_int32_t) iep->ie_fnametype)); 882 883 /* check the name - the case-insensitible check 884 * has to come first, to break from this for loop 885 * if needed, so we can dive correctly */ 886 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 887 fname, fnamelen); 888 if (res > 0) break; 889 if (res < 0) continue; 890 891 if (iep->ie_fnametype == 0 || 892 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 893 { 894 res = NTFS_UASTRCMP(iep->ie_fname, 895 iep->ie_fnamelen, fname, fnamelen); 896 if (res != 0) continue; 897 } 898 899 if (aname) { 900 error = ntfs_ntlookupattr(ntmp, 901 aname, anamelen, 902 &attrtype, &attrname); 903 if (error) 904 goto fail; 905 } 906 907 /* Check if we've found ourself */ 908 if ((iep->ie_number == ip->i_number) && 909 (attrtype == fp->f_attrtype) && 910 ((!attrname && !fp->f_attrname) || 911 (attrname && fp->f_attrname && 912 !strcmp(attrname, fp->f_attrname)))) 913 { 914 vref(vp); 915 *vpp = vp; 916 error = 0; 917 goto fail; 918 } 919 920 /* vget node, but don't load it */ 921 error = ntfs_vgetex(ntmp->ntm_mountp, 922 iep->ie_number, attrtype, attrname, 923 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 924 curthread, &nvp); 925 926 /* free the buffer returned by ntfs_ntlookupattr() */ 927 if (attrname) { 928 FREE(attrname, M_TEMP); 929 attrname = NULL; 930 } 931 932 if (error) 933 goto fail; 934 935 nfp = VTOF(nvp); 936 937 if (nfp->f_flag & FN_VALID) { 938 *vpp = nvp; 939 goto fail; 940 } 941 942 nfp->f_fflag = iep->ie_fflag; 943 nfp->f_pnumber = iep->ie_fpnumber; 944 nfp->f_times = iep->ie_ftimes; 945 946 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 947 (nfp->f_attrtype == NTFS_A_DATA) && 948 (nfp->f_attrname == NULL)) 949 f_type = VDIR; 950 else 951 f_type = VREG; 952 953 nvp->v_type = f_type; 954 955 if ((nfp->f_attrtype == NTFS_A_DATA) && 956 (nfp->f_attrname == NULL)) 957 { 958 /* Opening default attribute */ 959 nfp->f_size = iep->ie_fsize; 960 nfp->f_allocated = iep->ie_fallocated; 961 nfp->f_flag |= FN_PRELOADED; 962 } else { 963 error = ntfs_filesize(ntmp, nfp, 964 &nfp->f_size, &nfp->f_allocated); 965 if (error) { 966 vput(nvp); 967 goto fail; 968 } 969 } 970 971 nfp->f_flag &= ~FN_VALID; 972 *vpp = nvp; 973 goto fail; 974 } 975 976 /* Dive if possible */ 977 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 978 dprintf(("ntfs_ntlookupfile: diving\n")); 979 980 cn = *(cn_t *) (rdbuf + aoff + 981 iep->reclen - sizeof(cn_t)); 982 rdsize = blsize; 983 984 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 985 ntfs_cntob(cn), rdsize, rdbuf, NULL); 986 if (error) 987 goto fail; 988 989 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 990 rdbuf, rdsize); 991 if (error) 992 goto fail; 993 994 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 995 0x18); 996 } else { 997 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 998 error = ENOENT; 999 break; 1000 } 1001 } while (1); 1002 1003 dprintf(("finish\n")); 1004 1005 fail: 1006 if (attrname) FREE(attrname, M_TEMP); 1007 ntfs_ntvattrrele(vap); 1008 ntfs_ntput(ip); 1009 FREE(rdbuf, M_TEMP); 1010 return (error); 1011 } 1012 1013 /* 1014 * Check if name type is permitted to show. 1015 */ 1016 int 1017 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep) 1018 { 1019 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1020 return 1; 1021 1022 switch (iep->ie_fnametype) { 1023 case 2: 1024 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1025 return 0; 1026 case 0: case 1: case 3: 1027 return 1; 1028 default: 1029 printf("ntfs_isnamepermitted: " \ 1030 "WARNING! Unknown file name type: %d\n", 1031 iep->ie_fnametype); 1032 break; 1033 } 1034 return 0; 1035 } 1036 1037 /* 1038 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1039 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1040 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1041 * fnode, so we can skip toward record number num almost immediatly. 1042 * Anyway this is rather slow routine. The problem is that we don't know 1043 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1044 */ 1045 int 1046 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp, 1047 u_int32_t num, struct attr_indexentry **riepp) 1048 { 1049 struct ntnode *ip = FTONT(fp); 1050 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1051 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1052 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1053 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1054 u_char *bmp = NULL; /* Bitmap */ 1055 u_int32_t blsize; /* Index allocation size (2048) */ 1056 u_int32_t rdsize; /* Length of data to read */ 1057 u_int32_t attrnum; /* Current attribute type */ 1058 u_int32_t cpbl = 1; /* Clusters per directory block */ 1059 u_int32_t blnum; 1060 struct attr_indexentry *iep; 1061 int error = ENOENT; 1062 u_int32_t aoff, cnum; 1063 1064 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num)); 1065 error = ntfs_ntget(ip); 1066 if (error) 1067 return (error); 1068 1069 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1070 if (error) 1071 return (ENOTDIR); 1072 1073 if (fp->f_dirblbuf == NULL) { 1074 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1075 MALLOC(fp->f_dirblbuf, caddr_t, 1076 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1077 } 1078 1079 blsize = fp->f_dirblsz; 1080 rdbuf = fp->f_dirblbuf; 1081 1082 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1083 1084 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1085 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1086 0, &bmvap); 1087 if (error) { 1088 error = ENOTDIR; 1089 goto fail; 1090 } 1091 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1092 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1093 bmvap->va_datalen, bmp, NULL); 1094 if (error) 1095 goto fail; 1096 1097 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1098 0, &iavap); 1099 if (error) { 1100 error = ENOTDIR; 1101 goto fail; 1102 } 1103 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1104 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1105 iavap->va_datalen, cpbl)); 1106 } else { 1107 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1108 iavap = bmvap = NULL; 1109 bmp = NULL; 1110 } 1111 1112 /* Try use previous values */ 1113 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1114 attrnum = fp->f_lastdattr; 1115 aoff = fp->f_lastdoff; 1116 blnum = fp->f_lastdblnum; 1117 cnum = fp->f_lastdnum; 1118 } else { 1119 attrnum = NTFS_A_INDXROOT; 1120 aoff = sizeof(struct attr_indexroot); 1121 blnum = 0; 1122 cnum = 0; 1123 } 1124 1125 do { 1126 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1127 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1128 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1129 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1130 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1131 if (error) 1132 goto fail; 1133 1134 if (attrnum == NTFS_A_INDX) { 1135 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1136 rdbuf, rdsize); 1137 if (error) 1138 goto fail; 1139 } 1140 if (aoff == 0) 1141 aoff = (attrnum == NTFS_A_INDX) ? 1142 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1143 sizeof(struct attr_indexroot); 1144 1145 iep = (struct attr_indexentry *) (rdbuf + aoff); 1146 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1147 aoff += iep->reclen, 1148 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1149 { 1150 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1151 1152 if (cnum >= num) { 1153 fp->f_lastdnum = cnum; 1154 fp->f_lastdoff = aoff; 1155 fp->f_lastdblnum = blnum; 1156 fp->f_lastdattr = attrnum; 1157 1158 *riepp = iep; 1159 1160 error = 0; 1161 goto fail; 1162 } 1163 cnum++; 1164 } 1165 1166 if (iavap) { 1167 if (attrnum == NTFS_A_INDXROOT) 1168 blnum = 0; 1169 else 1170 blnum++; 1171 1172 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1173 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1174 break; 1175 blnum++; 1176 } 1177 1178 attrnum = NTFS_A_INDX; 1179 aoff = 0; 1180 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1181 break; 1182 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1183 } 1184 } while (iavap); 1185 1186 *riepp = NULL; 1187 fp->f_lastdnum = 0; 1188 1189 fail: 1190 if (vap) 1191 ntfs_ntvattrrele(vap); 1192 if (bmvap) 1193 ntfs_ntvattrrele(bmvap); 1194 if (iavap) 1195 ntfs_ntvattrrele(iavap); 1196 if (bmp) 1197 FREE(bmp, M_TEMP); 1198 ntfs_ntput(ip); 1199 return (error); 1200 } 1201 1202 /* 1203 * Convert NTFS times that are in 100 ns units and begins from 1204 * 1601 Jan 1 into unix times. 1205 */ 1206 struct timespec 1207 ntfs_nttimetounix(u_int64_t nt) 1208 { 1209 struct timespec t; 1210 1211 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1212 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1213 t.tv_sec = nt / (1000 * 1000 * 10) - 1214 369LL * 365LL * 24LL * 60LL * 60LL - 1215 89LL * 1LL * 24LL * 60LL * 60LL; 1216 return (t); 1217 } 1218 1219 /* 1220 * Get file times from NTFS_A_NAME attribute. 1221 */ 1222 int 1223 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm) 1224 { 1225 struct ntvattr *vap; 1226 int error; 1227 1228 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number)); 1229 1230 error = ntfs_ntget(ip); 1231 if (error) 1232 return (error); 1233 1234 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1235 if (error) { 1236 ntfs_ntput(ip); 1237 return (error); 1238 } 1239 *tm = vap->va_a_name->n_times; 1240 ntfs_ntvattrrele(vap); 1241 ntfs_ntput(ip); 1242 1243 return (0); 1244 } 1245 1246 /* 1247 * Get file sizes from corresponding attribute. 1248 * 1249 * ntnode under fnode should be locked. 1250 */ 1251 int 1252 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size, 1253 u_int64_t *bytes) 1254 { 1255 struct ntvattr *vap; 1256 struct ntnode *ip = FTONT(fp); 1257 u_int64_t sz, bn; 1258 int error; 1259 1260 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number)); 1261 1262 error = ntfs_ntvattrget(ntmp, ip, 1263 fp->f_attrtype, fp->f_attrname, 0, &vap); 1264 if (error) 1265 return (error); 1266 1267 bn = vap->va_allocated; 1268 sz = vap->va_datalen; 1269 1270 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1271 (u_int32_t) sz, (u_int32_t) bn)); 1272 1273 if (size) 1274 *size = sz; 1275 if (bytes) 1276 *bytes = bn; 1277 1278 ntfs_ntvattrrele(vap); 1279 1280 return (0); 1281 } 1282 1283 /* 1284 * This is one of write routine. 1285 */ 1286 int 1287 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1288 u_int32_t attrnum, char *attrname, off_t roff, 1289 size_t rsize, void *rdata, size_t *initp, 1290 struct uio *uio) 1291 { 1292 size_t init; 1293 int error = 0; 1294 off_t off = roff, left = rsize, towrite; 1295 caddr_t data = rdata; 1296 struct ntvattr *vap; 1297 *initp = 0; 1298 1299 while (left) { 1300 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1301 ntfs_btocn(off), &vap); 1302 if (error) 1303 return (error); 1304 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1305 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1306 (u_int32_t) off, (u_int32_t) towrite, 1307 (u_int32_t) vap->va_vcnstart, 1308 (u_int32_t) vap->va_vcnend)); 1309 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1310 off - ntfs_cntob(vap->va_vcnstart), 1311 towrite, data, &init, uio); 1312 if (error) { 1313 printf("ntfs_writeattr_plain: " \ 1314 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1315 (u_int32_t) off, (u_int32_t) towrite); 1316 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1317 (u_int32_t) vap->va_vcnstart, 1318 (u_int32_t) vap->va_vcnend); 1319 ntfs_ntvattrrele(vap); 1320 break; 1321 } 1322 ntfs_ntvattrrele(vap); 1323 left -= towrite; 1324 off += towrite; 1325 data = data + towrite; 1326 *initp += init; 1327 } 1328 1329 return (error); 1330 } 1331 1332 /* 1333 * This is one of write routine. 1334 * 1335 * ntnode should be locked. 1336 */ 1337 int 1338 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1339 struct ntvattr *vap, off_t roff, size_t rsize, 1340 void *rdata, size_t *initp, struct uio *uio) 1341 { 1342 int error = 0; 1343 int off; 1344 int cnt; 1345 cn_t ccn, ccl, cn, left, cl; 1346 caddr_t data = rdata; 1347 struct buf *bp; 1348 size_t tocopy; 1349 1350 *initp = 0; 1351 1352 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1353 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1354 return ENOTTY; 1355 } 1356 1357 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1358 vap->va_vruncnt)); 1359 1360 off = roff; 1361 left = rsize; 1362 ccl = 0; 1363 ccn = 0; 1364 cnt = 0; 1365 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1366 ccn = vap->va_vruncn[cnt]; 1367 ccl = vap->va_vruncl[cnt]; 1368 1369 ddprintf(("ntfs_writentvattr_plain: " \ 1370 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1371 (u_int32_t) left, (u_int32_t) ccn, \ 1372 (u_int32_t) ccl, (u_int32_t) off)); 1373 1374 if (ntfs_cntob(ccl) < off) { 1375 off -= ntfs_cntob(ccl); 1376 cnt++; 1377 continue; 1378 } 1379 if (!ccn && ip->i_number != NTFS_BOOTINO) 1380 continue; /* XXX */ 1381 1382 ccl -= ntfs_btocn(off); 1383 cn = ccn + ntfs_btocn(off); 1384 off = ntfs_btocnoff(off); 1385 1386 while (left && ccl) { 1387 #if defined(__DragonFly__) 1388 tocopy = min(left, 1389 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1390 #else 1391 /* under NetBSD, bread() can read 1392 * maximum one block worth of data */ 1393 tocopy = min(left, ntmp->ntm_bps - off); 1394 #endif 1395 cl = ntfs_btocl(tocopy + off); 1396 ddprintf(("ntfs_writentvattr_plain: write: " \ 1397 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1398 (u_int32_t) cn, (u_int32_t) cl, 1399 (u_int32_t) off, (u_int32_t) tocopy, 1400 (u_int32_t) left)); 1401 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1402 { 1403 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn), 1404 ntfs_cntob(cl), 0, 0); 1405 clrbuf(bp); 1406 } else { 1407 error = bread(ntmp->ntm_devvp, 1408 ntfs_cntodoff(cn), 1409 ntfs_cntob(cl), &bp); 1410 if (error) { 1411 brelse(bp); 1412 return (error); 1413 } 1414 } 1415 if (uio) 1416 uiomove(bp->b_data + off, tocopy, uio); 1417 else 1418 memcpy(bp->b_data + off, data, tocopy); 1419 bawrite(bp); 1420 data = data + tocopy; 1421 *initp += tocopy; 1422 off = 0; 1423 left -= tocopy; 1424 cn += cl; 1425 ccl -= cl; 1426 } 1427 } 1428 1429 if (left) { 1430 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1431 error = EINVAL; 1432 } 1433 1434 return (error); 1435 } 1436 1437 /* 1438 * This is one of read routines. 1439 * 1440 * ntnode should be locked. 1441 */ 1442 int 1443 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1444 struct ntvattr *vap, off_t roff, size_t rsize, 1445 void *rdata, size_t *initp, struct uio *uio) 1446 { 1447 int error = 0; 1448 int off; 1449 1450 *initp = 0; 1451 if (vap->va_flag & NTFS_AF_INRUN) { 1452 int cnt; 1453 cn_t ccn, ccl, cn, left, cl; 1454 caddr_t data = rdata; 1455 struct buf *bp; 1456 size_t tocopy; 1457 1458 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1459 vap->va_vruncnt)); 1460 1461 off = roff; 1462 left = rsize; 1463 ccl = 0; 1464 ccn = 0; 1465 cnt = 0; 1466 while (left && (cnt < vap->va_vruncnt)) { 1467 ccn = vap->va_vruncn[cnt]; 1468 ccl = vap->va_vruncl[cnt]; 1469 1470 ddprintf(("ntfs_readntvattr_plain: " \ 1471 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1472 (u_int32_t) left, (u_int32_t) ccn, \ 1473 (u_int32_t) ccl, (u_int32_t) off)); 1474 1475 if (ntfs_cntob(ccl) < off) { 1476 off -= ntfs_cntob(ccl); 1477 cnt++; 1478 continue; 1479 } 1480 if (ccn || ip->i_number == NTFS_BOOTINO) { 1481 ccl -= ntfs_btocn(off); 1482 cn = ccn + ntfs_btocn(off); 1483 off = ntfs_btocnoff(off); 1484 1485 while (left && ccl) { 1486 #if defined(__DragonFly__) 1487 tocopy = min(left, 1488 min(ntfs_cntob(ccl) - off, 1489 MAXBSIZE - off)); 1490 #else 1491 /* under NetBSD, bread() can read 1492 * maximum one block worth of data */ 1493 tocopy = min(left, 1494 ntmp->ntm_bps - off); 1495 #endif 1496 cl = ntfs_btocl(tocopy + off); 1497 ddprintf(("ntfs_readntvattr_plain: " \ 1498 "read: cn: 0x%x cl: %d, " \ 1499 "off: %d len: %d, left: %d\n", 1500 (u_int32_t) cn, 1501 (u_int32_t) cl, 1502 (u_int32_t) off, 1503 (u_int32_t) tocopy, 1504 (u_int32_t) left)); 1505 error = bread(ntmp->ntm_devvp, 1506 ntfs_cntodoff(cn), 1507 ntfs_cntob(cl), 1508 &bp); 1509 if (error) { 1510 brelse(bp); 1511 return (error); 1512 } 1513 if (uio) { 1514 uiomove(bp->b_data + off, 1515 tocopy, uio); 1516 } else { 1517 memcpy(data, bp->b_data + off, 1518 tocopy); 1519 } 1520 brelse(bp); 1521 data = data + tocopy; 1522 *initp += tocopy; 1523 off = 0; 1524 left -= tocopy; 1525 cn += cl; 1526 ccl -= cl; 1527 } 1528 } else { 1529 tocopy = min(left, ntfs_cntob(ccl) - off); 1530 ddprintf(("ntfs_readntvattr_plain: " 1531 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1532 " len: %d, left: %d\n", 1533 (u_int32_t) ccn, (u_int32_t) ccl, 1534 (u_int32_t) off, (u_int32_t) tocopy, 1535 (u_int32_t) left)); 1536 left -= tocopy; 1537 off = 0; 1538 if (uio) { 1539 size_t remains = tocopy; 1540 for(; remains; remains++) 1541 uiomove("", 1, uio); 1542 } else 1543 bzero(data, tocopy); 1544 data = data + tocopy; 1545 } 1546 cnt++; 1547 } 1548 if (left) { 1549 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1550 error = E2BIG; 1551 } 1552 } else { 1553 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1554 if (uio) 1555 uiomove(vap->va_datap + roff, rsize, uio); 1556 else 1557 memcpy(rdata, vap->va_datap + roff, rsize); 1558 *initp += rsize; 1559 } 1560 1561 return (error); 1562 } 1563 1564 /* 1565 * This is one of read routines. 1566 */ 1567 int 1568 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1569 u_int32_t attrnum, char *attrname, off_t roff, 1570 size_t rsize, void *rdata, size_t * initp, 1571 struct uio *uio) 1572 { 1573 size_t init; 1574 int error = 0; 1575 off_t off = roff, left = rsize, toread; 1576 caddr_t data = rdata; 1577 struct ntvattr *vap; 1578 *initp = 0; 1579 1580 while (left) { 1581 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1582 ntfs_btocn(off), &vap); 1583 if (error) 1584 return (error); 1585 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1586 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1587 (u_int32_t) off, (u_int32_t) toread, 1588 (u_int32_t) vap->va_vcnstart, 1589 (u_int32_t) vap->va_vcnend)); 1590 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1591 off - ntfs_cntob(vap->va_vcnstart), 1592 toread, data, &init, uio); 1593 if (error) { 1594 printf("ntfs_readattr_plain: " \ 1595 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1596 (u_int32_t) off, (u_int32_t) toread); 1597 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1598 (u_int32_t) vap->va_vcnstart, 1599 (u_int32_t) vap->va_vcnend); 1600 ntfs_ntvattrrele(vap); 1601 break; 1602 } 1603 ntfs_ntvattrrele(vap); 1604 left -= toread; 1605 off += toread; 1606 data = data + toread; 1607 *initp += init; 1608 } 1609 1610 return (error); 1611 } 1612 1613 /* 1614 * This is one of read routines. 1615 */ 1616 int 1617 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum, 1618 char *attrname, off_t roff, size_t rsize, void *rdata, 1619 struct uio *uio) 1620 { 1621 int error = 0; 1622 struct ntvattr *vap; 1623 size_t init; 1624 1625 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n", 1626 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1627 1628 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1629 if (error) 1630 return (error); 1631 1632 if ((roff > vap->va_datalen) || 1633 (roff + rsize > vap->va_datalen)) { 1634 ddprintf(("ntfs_readattr: offset too big\n")); 1635 ntfs_ntvattrrele(vap); 1636 return (E2BIG); 1637 } 1638 if (vap->va_compression && vap->va_compressalg) { 1639 u_int8_t *cup; 1640 u_int8_t *uup; 1641 off_t off = roff, left = rsize, tocopy; 1642 caddr_t data = rdata; 1643 cn_t cn; 1644 1645 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1646 vap->va_compressalg)); 1647 1648 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1649 M_NTFSDECOMP, M_WAITOK); 1650 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1651 M_NTFSDECOMP, M_WAITOK); 1652 1653 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1654 off = roff - ntfs_cntob(cn); 1655 1656 while (left) { 1657 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1658 attrname, ntfs_cntob(cn), 1659 ntfs_cntob(NTFS_COMPUNIT_CL), 1660 cup, &init, NULL); 1661 if (error) 1662 break; 1663 1664 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1665 1666 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1667 if (uio) 1668 uiomove(cup + off, tocopy, uio); 1669 else 1670 memcpy(data, cup + off, tocopy); 1671 } else if (init == 0) { 1672 if (uio) { 1673 size_t remains = tocopy; 1674 for(; remains; remains--) 1675 uiomove("", 1, uio); 1676 } 1677 else 1678 bzero(data, tocopy); 1679 } else { 1680 error = ntfs_uncompunit(ntmp, uup, cup); 1681 if (error) 1682 break; 1683 if (uio) 1684 uiomove(uup + off, tocopy, uio); 1685 else 1686 memcpy(data, uup + off, tocopy); 1687 } 1688 1689 left -= tocopy; 1690 data = data + tocopy; 1691 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1692 cn += NTFS_COMPUNIT_CL; 1693 } 1694 1695 FREE(uup, M_NTFSDECOMP); 1696 FREE(cup, M_NTFSDECOMP); 1697 } else 1698 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1699 roff, rsize, rdata, &init, uio); 1700 ntfs_ntvattrrele(vap); 1701 return (error); 1702 } 1703 1704 #if UNUSED_CODE 1705 int 1706 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off) 1707 { 1708 u_int8_t sz; 1709 int i; 1710 1711 if (NULL == run) { 1712 printf("ntfs_parsetun: run == NULL\n"); 1713 return (EINVAL); 1714 } 1715 sz = run[(*off)++]; 1716 if (0 == sz) { 1717 printf("ntfs_parserun: trying to go out of run\n"); 1718 return (E2BIG); 1719 } 1720 *cl = 0; 1721 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1722 printf("ntfs_parserun: " \ 1723 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1724 sz, len, *off); 1725 return (EINVAL); 1726 } 1727 for (i = 0; i < (sz & 0xF); i++) 1728 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1729 1730 sz >>= 4; 1731 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1732 printf("ntfs_parserun: " \ 1733 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1734 sz, len, *off); 1735 return (EINVAL); 1736 } 1737 for (i = 0; i < (sz & 0xF); i++) 1738 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1739 1740 return (0); 1741 } 1742 #endif 1743 1744 /* 1745 * Process fixup routine on given buffer. 1746 */ 1747 int 1748 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf, 1749 size_t len) 1750 { 1751 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1752 int i; 1753 u_int16_t fixup; 1754 u_int16_t *fxp; 1755 u_int16_t *cfxp; 1756 1757 if (fhp->fh_magic != magic) { 1758 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1759 fhp->fh_magic, magic); 1760 return (EINVAL); 1761 } 1762 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1763 printf("ntfs_procfixups: " \ 1764 "bad fixups number: %d for %ld bytes block\n", 1765 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1766 return (EINVAL); 1767 } 1768 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1769 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1770 return (EINVAL); 1771 } 1772 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1773 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1774 fixup = *fxp++; 1775 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1776 if (*cfxp != fixup) { 1777 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1778 return (EINVAL); 1779 } 1780 *cfxp = *fxp; 1781 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps); 1782 } 1783 return (0); 1784 } 1785 1786 #if UNUSED_CODE 1787 int 1788 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len, 1789 cn_t vcn) 1790 { 1791 cn_t ccn = 0; 1792 cn_t ccl = 0; 1793 u_long off = 0; 1794 int error = 0; 1795 1796 #if NTFS_DEBUG 1797 int i; 1798 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1799 run, len, (u_long) vcn); 1800 printf("ntfs_runtocn: run: "); 1801 for (i = 0; i < len; i++) 1802 printf("0x%02x ", run[i]); 1803 printf("\n"); 1804 #endif 1805 1806 if (NULL == run) { 1807 printf("ntfs_runtocn: run == NULL\n"); 1808 return (EINVAL); 1809 } 1810 do { 1811 if (run[off] == 0) { 1812 printf("ntfs_runtocn: vcn too big\n"); 1813 return (E2BIG); 1814 } 1815 vcn -= ccl; 1816 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1817 if (error) { 1818 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1819 return (error); 1820 } 1821 } while (ccl <= vcn); 1822 *cn = ccn + vcn; 1823 return (0); 1824 } 1825 #endif 1826 1827 /* 1828 * this initializes toupper table & dependant variables to be ready for 1829 * later work 1830 */ 1831 void 1832 ntfs_toupper_init(void) 1833 { 1834 ntfs_toupper_tab = (wchar *) NULL; 1835 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0); 1836 ntfs_toupper_usecount = 0; 1837 } 1838 1839 /* 1840 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1841 * otherwise read the data from the filesystem we are currently mounting 1842 */ 1843 int 1844 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp) 1845 { 1846 int error = 0; 1847 struct vnode *vp; 1848 1849 /* get exclusive access */ 1850 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1851 1852 /* only read the translation data from a file if it hasn't been 1853 * read already */ 1854 if (ntfs_toupper_tab) 1855 goto out; 1856 1857 /* 1858 * Read in Unicode lowercase -> uppercase translation file. 1859 * XXX for now, just the first 256 entries are used anyway, 1860 * so don't bother reading more 1861 */ 1862 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1863 M_NTFSRDATA, M_WAITOK); 1864 1865 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1866 goto out; 1867 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1868 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1869 vput(vp); 1870 1871 out: 1872 ntfs_toupper_usecount++; 1873 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1874 return (error); 1875 } 1876 1877 /* 1878 * lower the use count and if it reaches zero, free the memory 1879 * tied by toupper table 1880 */ 1881 void 1882 ntfs_toupper_unuse(void) 1883 { 1884 /* get exclusive access */ 1885 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1886 1887 ntfs_toupper_usecount--; 1888 if (ntfs_toupper_usecount == 0) { 1889 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1890 ntfs_toupper_tab = NULL; 1891 } 1892 #ifdef DIAGNOSTIC 1893 else if (ntfs_toupper_usecount < 0) { 1894 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1895 ntfs_toupper_usecount); 1896 } 1897 #endif 1898 1899 /* release the lock */ 1900 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1901 } 1902 1903 int 1904 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w) 1905 { 1906 char ** u28; 1907 int i, j, h, l; 1908 1909 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 1910 1911 for (i=0; i<256; i++) { 1912 h = (u2w[i] >> 8) & 0xFF; 1913 l = (u2w[i]) &0xFF; 1914 1915 if (u28[h] == NULL) { 1916 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 1917 for (j=0; j<256; j++) 1918 u28[h][j] = '_'; 1919 } 1920 1921 u28[h][l] = i & 0xFF; 1922 } 1923 1924 ntmp->ntm_u28 = u28; 1925 1926 return (0); 1927 } 1928 1929 int 1930 ntfs_u28_uninit(struct ntfsmount *ntmp) 1931 { 1932 char ** u28; 1933 int i; 1934 1935 if (ntmp->ntm_u28 == NULL) 1936 return (0); 1937 1938 u28 = ntmp->ntm_u28; 1939 1940 for (i=0; i<256; i++) 1941 if (u28[i] != NULL) 1942 FREE(u28[i], M_TEMP); 1943 1944 FREE(u28, M_TEMP); 1945 1946 return (0); 1947 } 1948 1949 int 1950 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w) 1951 { 1952 wchar * _82u; 1953 int i; 1954 1955 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 1956 1957 if (u2w == NULL) { 1958 for (i=0; i<256; i++) 1959 _82u[i] = i; 1960 } else { 1961 for (i=0; i<128; i++) 1962 _82u[i] = i; 1963 for (i=0; i<128; i++) 1964 _82u[i+128] = u2w[i]; 1965 } 1966 1967 ntmp->ntm_82u = _82u; 1968 1969 return (0); 1970 } 1971 1972 int 1973 ntfs_82u_uninit(struct ntfsmount *ntmp) 1974 { 1975 FREE(ntmp->ntm_82u, M_TEMP); 1976 return (0); 1977 } 1978 1979 /* 1980 * maps the Unicode char to 8bit equivalent 1981 * XXX currently only gets lower 8bit from the Unicode char 1982 * and substitutes a '_' for it if the result would be '\0'; 1983 * something better has to be definitely though out 1984 */ 1985 char 1986 ntfs_u28(struct ntfsmount *ntmp, wchar wc) 1987 { 1988 char * p; 1989 1990 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 1991 if (p == NULL) 1992 return ('_'); 1993 return (p[wc&0xFF]); 1994 } 1995 1996