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 1.21 2006/04/13 19:25:09 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 nfp->f_flag &= ~FN_VALID; 971 972 /* 973 * Normal files use the buffer cache 974 */ 975 if (nvp->v_type == VREG) 976 vinitvmio(nvp, nfp->f_size); 977 *vpp = nvp; 978 goto fail; 979 } 980 981 /* Dive if possible */ 982 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 983 dprintf(("ntfs_ntlookupfile: diving\n")); 984 985 cn = *(cn_t *) (rdbuf + aoff + 986 iep->reclen - sizeof(cn_t)); 987 rdsize = blsize; 988 989 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 990 ntfs_cntob(cn), rdsize, rdbuf, NULL); 991 if (error) 992 goto fail; 993 994 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 995 rdbuf, rdsize); 996 if (error) 997 goto fail; 998 999 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1000 0x18); 1001 } else { 1002 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1003 error = ENOENT; 1004 break; 1005 } 1006 } while (1); 1007 1008 dprintf(("finish\n")); 1009 1010 fail: 1011 if (attrname) FREE(attrname, M_TEMP); 1012 ntfs_ntvattrrele(vap); 1013 ntfs_ntput(ip); 1014 FREE(rdbuf, M_TEMP); 1015 return (error); 1016 } 1017 1018 /* 1019 * Check if name type is permitted to show. 1020 */ 1021 int 1022 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep) 1023 { 1024 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1025 return 1; 1026 1027 switch (iep->ie_fnametype) { 1028 case 2: 1029 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1030 return 0; 1031 case 0: case 1: case 3: 1032 return 1; 1033 default: 1034 printf("ntfs_isnamepermitted: " \ 1035 "WARNING! Unknown file name type: %d\n", 1036 iep->ie_fnametype); 1037 break; 1038 } 1039 return 0; 1040 } 1041 1042 /* 1043 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1044 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1045 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1046 * fnode, so we can skip toward record number num almost immediatly. 1047 * Anyway this is rather slow routine. The problem is that we don't know 1048 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1049 */ 1050 int 1051 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp, 1052 u_int32_t num, struct attr_indexentry **riepp) 1053 { 1054 struct ntnode *ip = FTONT(fp); 1055 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1056 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1057 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1058 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1059 u_char *bmp = NULL; /* Bitmap */ 1060 u_int32_t blsize; /* Index allocation size (2048) */ 1061 u_int32_t rdsize; /* Length of data to read */ 1062 u_int32_t attrnum; /* Current attribute type */ 1063 u_int32_t cpbl = 1; /* Clusters per directory block */ 1064 u_int32_t blnum; 1065 struct attr_indexentry *iep; 1066 int error = ENOENT; 1067 u_int32_t aoff, cnum; 1068 1069 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num)); 1070 error = ntfs_ntget(ip); 1071 if (error) 1072 return (error); 1073 1074 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1075 if (error) 1076 return (ENOTDIR); 1077 1078 if (fp->f_dirblbuf == NULL) { 1079 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1080 MALLOC(fp->f_dirblbuf, caddr_t, 1081 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1082 } 1083 1084 blsize = fp->f_dirblsz; 1085 rdbuf = fp->f_dirblbuf; 1086 1087 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1088 1089 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1090 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1091 0, &bmvap); 1092 if (error) { 1093 error = ENOTDIR; 1094 goto fail; 1095 } 1096 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1097 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1098 bmvap->va_datalen, bmp, NULL); 1099 if (error) 1100 goto fail; 1101 1102 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1103 0, &iavap); 1104 if (error) { 1105 error = ENOTDIR; 1106 goto fail; 1107 } 1108 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1109 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1110 iavap->va_datalen, cpbl)); 1111 } else { 1112 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1113 iavap = bmvap = NULL; 1114 bmp = NULL; 1115 } 1116 1117 /* Try use previous values */ 1118 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1119 attrnum = fp->f_lastdattr; 1120 aoff = fp->f_lastdoff; 1121 blnum = fp->f_lastdblnum; 1122 cnum = fp->f_lastdnum; 1123 } else { 1124 attrnum = NTFS_A_INDXROOT; 1125 aoff = sizeof(struct attr_indexroot); 1126 blnum = 0; 1127 cnum = 0; 1128 } 1129 1130 do { 1131 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1132 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1133 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1134 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1135 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1136 if (error) 1137 goto fail; 1138 1139 if (attrnum == NTFS_A_INDX) { 1140 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1141 rdbuf, rdsize); 1142 if (error) 1143 goto fail; 1144 } 1145 if (aoff == 0) 1146 aoff = (attrnum == NTFS_A_INDX) ? 1147 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1148 sizeof(struct attr_indexroot); 1149 1150 iep = (struct attr_indexentry *) (rdbuf + aoff); 1151 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1152 aoff += iep->reclen, 1153 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1154 { 1155 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1156 1157 if (cnum >= num) { 1158 fp->f_lastdnum = cnum; 1159 fp->f_lastdoff = aoff; 1160 fp->f_lastdblnum = blnum; 1161 fp->f_lastdattr = attrnum; 1162 1163 *riepp = iep; 1164 1165 error = 0; 1166 goto fail; 1167 } 1168 cnum++; 1169 } 1170 1171 if (iavap) { 1172 if (attrnum == NTFS_A_INDXROOT) 1173 blnum = 0; 1174 else 1175 blnum++; 1176 1177 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1178 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1179 break; 1180 blnum++; 1181 } 1182 1183 attrnum = NTFS_A_INDX; 1184 aoff = 0; 1185 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1186 break; 1187 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1188 } 1189 } while (iavap); 1190 1191 *riepp = NULL; 1192 fp->f_lastdnum = 0; 1193 1194 fail: 1195 if (vap) 1196 ntfs_ntvattrrele(vap); 1197 if (bmvap) 1198 ntfs_ntvattrrele(bmvap); 1199 if (iavap) 1200 ntfs_ntvattrrele(iavap); 1201 if (bmp) 1202 FREE(bmp, M_TEMP); 1203 ntfs_ntput(ip); 1204 return (error); 1205 } 1206 1207 /* 1208 * Convert NTFS times that are in 100 ns units and begins from 1209 * 1601 Jan 1 into unix times. 1210 */ 1211 struct timespec 1212 ntfs_nttimetounix(u_int64_t nt) 1213 { 1214 struct timespec t; 1215 1216 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1217 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1218 t.tv_sec = nt / (1000 * 1000 * 10) - 1219 369LL * 365LL * 24LL * 60LL * 60LL - 1220 89LL * 1LL * 24LL * 60LL * 60LL; 1221 return (t); 1222 } 1223 1224 /* 1225 * Get file times from NTFS_A_NAME attribute. 1226 */ 1227 int 1228 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm) 1229 { 1230 struct ntvattr *vap; 1231 int error; 1232 1233 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number)); 1234 1235 error = ntfs_ntget(ip); 1236 if (error) 1237 return (error); 1238 1239 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1240 if (error) { 1241 ntfs_ntput(ip); 1242 return (error); 1243 } 1244 *tm = vap->va_a_name->n_times; 1245 ntfs_ntvattrrele(vap); 1246 ntfs_ntput(ip); 1247 1248 return (0); 1249 } 1250 1251 /* 1252 * Get file sizes from corresponding attribute. 1253 * 1254 * ntnode under fnode should be locked. 1255 */ 1256 int 1257 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size, 1258 u_int64_t *bytes) 1259 { 1260 struct ntvattr *vap; 1261 struct ntnode *ip = FTONT(fp); 1262 u_int64_t sz, bn; 1263 int error; 1264 1265 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number)); 1266 1267 error = ntfs_ntvattrget(ntmp, ip, 1268 fp->f_attrtype, fp->f_attrname, 0, &vap); 1269 if (error) 1270 return (error); 1271 1272 bn = vap->va_allocated; 1273 sz = vap->va_datalen; 1274 1275 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1276 (u_int32_t) sz, (u_int32_t) bn)); 1277 1278 if (size) 1279 *size = sz; 1280 if (bytes) 1281 *bytes = bn; 1282 1283 ntfs_ntvattrrele(vap); 1284 1285 return (0); 1286 } 1287 1288 /* 1289 * This is one of write routine. 1290 */ 1291 int 1292 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1293 u_int32_t attrnum, char *attrname, off_t roff, 1294 size_t rsize, void *rdata, size_t *initp, 1295 struct uio *uio) 1296 { 1297 size_t init; 1298 int error = 0; 1299 off_t off = roff, left = rsize, towrite; 1300 caddr_t data = rdata; 1301 struct ntvattr *vap; 1302 *initp = 0; 1303 1304 while (left) { 1305 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1306 ntfs_btocn(off), &vap); 1307 if (error) 1308 return (error); 1309 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1310 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1311 (u_int32_t) off, (u_int32_t) towrite, 1312 (u_int32_t) vap->va_vcnstart, 1313 (u_int32_t) vap->va_vcnend)); 1314 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1315 off - ntfs_cntob(vap->va_vcnstart), 1316 towrite, data, &init, uio); 1317 if (error) { 1318 printf("ntfs_writeattr_plain: " \ 1319 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1320 (u_int32_t) off, (u_int32_t) towrite); 1321 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1322 (u_int32_t) vap->va_vcnstart, 1323 (u_int32_t) vap->va_vcnend); 1324 ntfs_ntvattrrele(vap); 1325 break; 1326 } 1327 ntfs_ntvattrrele(vap); 1328 left -= towrite; 1329 off += towrite; 1330 data = data + towrite; 1331 *initp += init; 1332 } 1333 1334 return (error); 1335 } 1336 1337 /* 1338 * This is one of write routine. 1339 * 1340 * ntnode should be locked. 1341 */ 1342 int 1343 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1344 struct ntvattr *vap, off_t roff, size_t rsize, 1345 void *rdata, size_t *initp, struct uio *uio) 1346 { 1347 int error = 0; 1348 int off; 1349 int cnt; 1350 cn_t ccn, ccl, cn, left, cl; 1351 caddr_t data = rdata; 1352 struct buf *bp; 1353 size_t tocopy; 1354 1355 *initp = 0; 1356 1357 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1358 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1359 return ENOTTY; 1360 } 1361 1362 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1363 vap->va_vruncnt)); 1364 1365 off = roff; 1366 left = rsize; 1367 ccl = 0; 1368 ccn = 0; 1369 cnt = 0; 1370 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1371 ccn = vap->va_vruncn[cnt]; 1372 ccl = vap->va_vruncl[cnt]; 1373 1374 ddprintf(("ntfs_writentvattr_plain: " \ 1375 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1376 (u_int32_t) left, (u_int32_t) ccn, \ 1377 (u_int32_t) ccl, (u_int32_t) off)); 1378 1379 if (ntfs_cntob(ccl) < off) { 1380 off -= ntfs_cntob(ccl); 1381 cnt++; 1382 continue; 1383 } 1384 if (!ccn && ip->i_number != NTFS_BOOTINO) 1385 continue; /* XXX */ 1386 1387 ccl -= ntfs_btocn(off); 1388 cn = ccn + ntfs_btocn(off); 1389 off = ntfs_btocnoff(off); 1390 1391 while (left && ccl) { 1392 #if defined(__DragonFly__) 1393 tocopy = min(left, 1394 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1395 #else 1396 /* under NetBSD, bread() can read 1397 * maximum one block worth of data */ 1398 tocopy = min(left, ntmp->ntm_bps - off); 1399 #endif 1400 cl = ntfs_btocl(tocopy + off); 1401 ddprintf(("ntfs_writentvattr_plain: write: " \ 1402 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1403 (u_int32_t) cn, (u_int32_t) cl, 1404 (u_int32_t) off, (u_int32_t) tocopy, 1405 (u_int32_t) left)); 1406 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1407 { 1408 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn), 1409 ntfs_cntob(cl), 0, 0); 1410 clrbuf(bp); 1411 } else { 1412 error = bread(ntmp->ntm_devvp, 1413 ntfs_cntodoff(cn), 1414 ntfs_cntob(cl), &bp); 1415 if (error) { 1416 brelse(bp); 1417 return (error); 1418 } 1419 } 1420 if (uio) 1421 uiomove(bp->b_data + off, tocopy, uio); 1422 else 1423 memcpy(bp->b_data + off, data, tocopy); 1424 bawrite(bp); 1425 data = data + tocopy; 1426 *initp += tocopy; 1427 off = 0; 1428 left -= tocopy; 1429 cn += cl; 1430 ccl -= cl; 1431 } 1432 } 1433 1434 if (left) { 1435 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1436 error = EINVAL; 1437 } 1438 1439 return (error); 1440 } 1441 1442 /* 1443 * This is one of read routines. 1444 * 1445 * ntnode should be locked. 1446 */ 1447 int 1448 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1449 struct ntvattr *vap, off_t roff, size_t rsize, 1450 void *rdata, size_t *initp, struct uio *uio) 1451 { 1452 int error = 0; 1453 int off; 1454 1455 *initp = 0; 1456 if (vap->va_flag & NTFS_AF_INRUN) { 1457 int cnt; 1458 cn_t ccn, ccl, cn, left, cl; 1459 caddr_t data = rdata; 1460 struct buf *bp; 1461 size_t tocopy; 1462 1463 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1464 vap->va_vruncnt)); 1465 1466 off = roff; 1467 left = rsize; 1468 ccl = 0; 1469 ccn = 0; 1470 cnt = 0; 1471 while (left && (cnt < vap->va_vruncnt)) { 1472 ccn = vap->va_vruncn[cnt]; 1473 ccl = vap->va_vruncl[cnt]; 1474 1475 ddprintf(("ntfs_readntvattr_plain: " \ 1476 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1477 (u_int32_t) left, (u_int32_t) ccn, \ 1478 (u_int32_t) ccl, (u_int32_t) off)); 1479 1480 if (ntfs_cntob(ccl) < off) { 1481 off -= ntfs_cntob(ccl); 1482 cnt++; 1483 continue; 1484 } 1485 if (ccn || ip->i_number == NTFS_BOOTINO) { 1486 ccl -= ntfs_btocn(off); 1487 cn = ccn + ntfs_btocn(off); 1488 off = ntfs_btocnoff(off); 1489 1490 while (left && ccl) { 1491 #if defined(__DragonFly__) 1492 tocopy = min(left, 1493 min(ntfs_cntob(ccl) - off, 1494 MAXBSIZE - off)); 1495 #else 1496 /* under NetBSD, bread() can read 1497 * maximum one block worth of data */ 1498 tocopy = min(left, 1499 ntmp->ntm_bps - off); 1500 #endif 1501 cl = ntfs_btocl(tocopy + off); 1502 ddprintf(("ntfs_readntvattr_plain: " \ 1503 "read: cn: 0x%x cl: %d, " \ 1504 "off: %d len: %d, left: %d\n", 1505 (u_int32_t) cn, 1506 (u_int32_t) cl, 1507 (u_int32_t) off, 1508 (u_int32_t) tocopy, 1509 (u_int32_t) left)); 1510 error = bread(ntmp->ntm_devvp, 1511 ntfs_cntodoff(cn), 1512 ntfs_cntob(cl), 1513 &bp); 1514 if (error) { 1515 brelse(bp); 1516 return (error); 1517 } 1518 if (uio) { 1519 uiomove(bp->b_data + off, 1520 tocopy, uio); 1521 } else { 1522 memcpy(data, bp->b_data + off, 1523 tocopy); 1524 } 1525 brelse(bp); 1526 data = data + tocopy; 1527 *initp += tocopy; 1528 off = 0; 1529 left -= tocopy; 1530 cn += cl; 1531 ccl -= cl; 1532 } 1533 } else { 1534 tocopy = min(left, ntfs_cntob(ccl) - off); 1535 ddprintf(("ntfs_readntvattr_plain: " 1536 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1537 " len: %d, left: %d\n", 1538 (u_int32_t) ccn, (u_int32_t) ccl, 1539 (u_int32_t) off, (u_int32_t) tocopy, 1540 (u_int32_t) left)); 1541 left -= tocopy; 1542 off = 0; 1543 if (uio) { 1544 size_t remains = tocopy; 1545 for(; remains; remains++) 1546 uiomove("", 1, uio); 1547 } else 1548 bzero(data, tocopy); 1549 data = data + tocopy; 1550 } 1551 cnt++; 1552 } 1553 if (left) { 1554 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1555 error = E2BIG; 1556 } 1557 } else { 1558 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1559 if (uio) 1560 uiomove(vap->va_datap + roff, rsize, uio); 1561 else 1562 memcpy(rdata, vap->va_datap + roff, rsize); 1563 *initp += rsize; 1564 } 1565 1566 return (error); 1567 } 1568 1569 /* 1570 * This is one of read routines. 1571 */ 1572 int 1573 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1574 u_int32_t attrnum, char *attrname, off_t roff, 1575 size_t rsize, void *rdata, size_t * initp, 1576 struct uio *uio) 1577 { 1578 size_t init; 1579 int error = 0; 1580 off_t off = roff, left = rsize, toread; 1581 caddr_t data = rdata; 1582 struct ntvattr *vap; 1583 *initp = 0; 1584 1585 while (left) { 1586 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1587 ntfs_btocn(off), &vap); 1588 if (error) 1589 return (error); 1590 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1591 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1592 (u_int32_t) off, (u_int32_t) toread, 1593 (u_int32_t) vap->va_vcnstart, 1594 (u_int32_t) vap->va_vcnend)); 1595 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1596 off - ntfs_cntob(vap->va_vcnstart), 1597 toread, data, &init, uio); 1598 if (error) { 1599 printf("ntfs_readattr_plain: " \ 1600 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1601 (u_int32_t) off, (u_int32_t) toread); 1602 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1603 (u_int32_t) vap->va_vcnstart, 1604 (u_int32_t) vap->va_vcnend); 1605 ntfs_ntvattrrele(vap); 1606 break; 1607 } 1608 ntfs_ntvattrrele(vap); 1609 left -= toread; 1610 off += toread; 1611 data = data + toread; 1612 *initp += init; 1613 } 1614 1615 return (error); 1616 } 1617 1618 /* 1619 * This is one of read routines. 1620 */ 1621 int 1622 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum, 1623 char *attrname, off_t roff, size_t rsize, void *rdata, 1624 struct uio *uio) 1625 { 1626 int error = 0; 1627 struct ntvattr *vap; 1628 size_t init; 1629 1630 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n", 1631 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1632 1633 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1634 if (error) 1635 return (error); 1636 1637 if ((roff > vap->va_datalen) || 1638 (roff + rsize > vap->va_datalen)) { 1639 ddprintf(("ntfs_readattr: offset too big\n")); 1640 ntfs_ntvattrrele(vap); 1641 return (E2BIG); 1642 } 1643 if (vap->va_compression && vap->va_compressalg) { 1644 u_int8_t *cup; 1645 u_int8_t *uup; 1646 off_t off = roff, left = rsize, tocopy; 1647 caddr_t data = rdata; 1648 cn_t cn; 1649 1650 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1651 vap->va_compressalg)); 1652 1653 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1654 M_NTFSDECOMP, M_WAITOK); 1655 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1656 M_NTFSDECOMP, M_WAITOK); 1657 1658 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1659 off = roff - ntfs_cntob(cn); 1660 1661 while (left) { 1662 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1663 attrname, ntfs_cntob(cn), 1664 ntfs_cntob(NTFS_COMPUNIT_CL), 1665 cup, &init, NULL); 1666 if (error) 1667 break; 1668 1669 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1670 1671 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1672 if (uio) 1673 uiomove(cup + off, tocopy, uio); 1674 else 1675 memcpy(data, cup + off, tocopy); 1676 } else if (init == 0) { 1677 if (uio) { 1678 size_t remains = tocopy; 1679 for(; remains; remains--) 1680 uiomove("", 1, uio); 1681 } 1682 else 1683 bzero(data, tocopy); 1684 } else { 1685 error = ntfs_uncompunit(ntmp, uup, cup); 1686 if (error) 1687 break; 1688 if (uio) 1689 uiomove(uup + off, tocopy, uio); 1690 else 1691 memcpy(data, uup + off, tocopy); 1692 } 1693 1694 left -= tocopy; 1695 data = data + tocopy; 1696 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1697 cn += NTFS_COMPUNIT_CL; 1698 } 1699 1700 FREE(uup, M_NTFSDECOMP); 1701 FREE(cup, M_NTFSDECOMP); 1702 } else 1703 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1704 roff, rsize, rdata, &init, uio); 1705 ntfs_ntvattrrele(vap); 1706 return (error); 1707 } 1708 1709 #if UNUSED_CODE 1710 int 1711 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off) 1712 { 1713 u_int8_t sz; 1714 int i; 1715 1716 if (NULL == run) { 1717 printf("ntfs_parsetun: run == NULL\n"); 1718 return (EINVAL); 1719 } 1720 sz = run[(*off)++]; 1721 if (0 == sz) { 1722 printf("ntfs_parserun: trying to go out of run\n"); 1723 return (E2BIG); 1724 } 1725 *cl = 0; 1726 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1727 printf("ntfs_parserun: " \ 1728 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1729 sz, len, *off); 1730 return (EINVAL); 1731 } 1732 for (i = 0; i < (sz & 0xF); i++) 1733 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1734 1735 sz >>= 4; 1736 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1737 printf("ntfs_parserun: " \ 1738 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1739 sz, len, *off); 1740 return (EINVAL); 1741 } 1742 for (i = 0; i < (sz & 0xF); i++) 1743 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1744 1745 return (0); 1746 } 1747 #endif 1748 1749 /* 1750 * Process fixup routine on given buffer. 1751 */ 1752 int 1753 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf, 1754 size_t len) 1755 { 1756 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1757 int i; 1758 u_int16_t fixup; 1759 u_int16_t *fxp; 1760 u_int16_t *cfxp; 1761 1762 if (fhp->fh_magic != magic) { 1763 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1764 fhp->fh_magic, magic); 1765 return (EINVAL); 1766 } 1767 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1768 printf("ntfs_procfixups: " \ 1769 "bad fixups number: %d for %ld bytes block\n", 1770 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1771 return (EINVAL); 1772 } 1773 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1774 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1775 return (EINVAL); 1776 } 1777 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1778 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1779 fixup = *fxp++; 1780 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1781 if (*cfxp != fixup) { 1782 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1783 return (EINVAL); 1784 } 1785 *cfxp = *fxp; 1786 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps); 1787 } 1788 return (0); 1789 } 1790 1791 #if UNUSED_CODE 1792 int 1793 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len, 1794 cn_t vcn) 1795 { 1796 cn_t ccn = 0; 1797 cn_t ccl = 0; 1798 u_long off = 0; 1799 int error = 0; 1800 1801 #if NTFS_DEBUG 1802 int i; 1803 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1804 run, len, (u_long) vcn); 1805 printf("ntfs_runtocn: run: "); 1806 for (i = 0; i < len; i++) 1807 printf("0x%02x ", run[i]); 1808 printf("\n"); 1809 #endif 1810 1811 if (NULL == run) { 1812 printf("ntfs_runtocn: run == NULL\n"); 1813 return (EINVAL); 1814 } 1815 do { 1816 if (run[off] == 0) { 1817 printf("ntfs_runtocn: vcn too big\n"); 1818 return (E2BIG); 1819 } 1820 vcn -= ccl; 1821 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1822 if (error) { 1823 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1824 return (error); 1825 } 1826 } while (ccl <= vcn); 1827 *cn = ccn + vcn; 1828 return (0); 1829 } 1830 #endif 1831 1832 /* 1833 * this initializes toupper table & dependant variables to be ready for 1834 * later work 1835 */ 1836 void 1837 ntfs_toupper_init(void) 1838 { 1839 ntfs_toupper_tab = (wchar *) NULL; 1840 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0); 1841 ntfs_toupper_usecount = 0; 1842 } 1843 1844 /* 1845 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1846 * otherwise read the data from the filesystem we are currently mounting 1847 */ 1848 int 1849 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp) 1850 { 1851 int error = 0; 1852 struct vnode *vp; 1853 1854 /* get exclusive access */ 1855 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1856 1857 /* only read the translation data from a file if it hasn't been 1858 * read already */ 1859 if (ntfs_toupper_tab) 1860 goto out; 1861 1862 /* 1863 * Read in Unicode lowercase -> uppercase translation file. 1864 * XXX for now, just the first 256 entries are used anyway, 1865 * so don't bother reading more 1866 */ 1867 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1868 M_NTFSRDATA, M_WAITOK); 1869 1870 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1871 goto out; 1872 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1873 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1874 vput(vp); 1875 1876 out: 1877 ntfs_toupper_usecount++; 1878 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1879 return (error); 1880 } 1881 1882 /* 1883 * lower the use count and if it reaches zero, free the memory 1884 * tied by toupper table 1885 */ 1886 void 1887 ntfs_toupper_unuse(void) 1888 { 1889 /* get exclusive access */ 1890 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1891 1892 ntfs_toupper_usecount--; 1893 if (ntfs_toupper_usecount == 0) { 1894 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1895 ntfs_toupper_tab = NULL; 1896 } 1897 #ifdef DIAGNOSTIC 1898 else if (ntfs_toupper_usecount < 0) { 1899 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1900 ntfs_toupper_usecount); 1901 } 1902 #endif 1903 1904 /* release the lock */ 1905 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1906 } 1907 1908 int 1909 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w) 1910 { 1911 char ** u28; 1912 int i, j, h, l; 1913 1914 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 1915 1916 for (i=0; i<256; i++) { 1917 h = (u2w[i] >> 8) & 0xFF; 1918 l = (u2w[i]) &0xFF; 1919 1920 if (u28[h] == NULL) { 1921 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 1922 for (j=0; j<256; j++) 1923 u28[h][j] = '_'; 1924 } 1925 1926 u28[h][l] = i & 0xFF; 1927 } 1928 1929 ntmp->ntm_u28 = u28; 1930 1931 return (0); 1932 } 1933 1934 int 1935 ntfs_u28_uninit(struct ntfsmount *ntmp) 1936 { 1937 char ** u28; 1938 int i; 1939 1940 if (ntmp->ntm_u28 == NULL) 1941 return (0); 1942 1943 u28 = ntmp->ntm_u28; 1944 1945 for (i=0; i<256; i++) 1946 if (u28[i] != NULL) 1947 FREE(u28[i], M_TEMP); 1948 1949 FREE(u28, M_TEMP); 1950 1951 return (0); 1952 } 1953 1954 int 1955 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w) 1956 { 1957 wchar * _82u; 1958 int i; 1959 1960 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 1961 1962 if (u2w == NULL) { 1963 for (i=0; i<256; i++) 1964 _82u[i] = i; 1965 } else { 1966 for (i=0; i<128; i++) 1967 _82u[i] = i; 1968 for (i=0; i<128; i++) 1969 _82u[i+128] = u2w[i]; 1970 } 1971 1972 ntmp->ntm_82u = _82u; 1973 1974 return (0); 1975 } 1976 1977 int 1978 ntfs_82u_uninit(struct ntfsmount *ntmp) 1979 { 1980 FREE(ntmp->ntm_82u, M_TEMP); 1981 return (0); 1982 } 1983 1984 /* 1985 * maps the Unicode char to 8bit equivalent 1986 * XXX currently only gets lower 8bit from the Unicode char 1987 * and substitutes a '_' for it if the result would be '\0'; 1988 * something better has to be definitely though out 1989 */ 1990 char 1991 ntfs_u28(struct ntfsmount *ntmp, wchar wc) 1992 { 1993 char * p; 1994 1995 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 1996 if (p == NULL) 1997 return ('_'); 1998 return (p[wc&0xFF]); 1999 } 2000 2001