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 1.17 2005/11/24 02:16:17 y0netan1 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 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 lwkt_tokref ilock; 350 351 dprintf(("ntfs_ntget: get ntnode %"PRId64": %p, usecount: %d\n", 352 ip->i_number, ip, ip->i_usecount)); 353 354 ip->i_usecount++; /* ZZZ */ 355 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE, NULL); 356 357 return 0; 358 } 359 360 /* 361 * Routine search ntnode in hash, if found: lock, inc usecount and return. 362 * If not in hash allocate structure for ntnode, prefill it, lock, 363 * inc count and return. 364 * 365 * ntnode returned locked 366 */ 367 int 368 ntfs_ntlookup(struct ntfsmount *ntmp, ino_t ino, struct ntnode **ipp) 369 { 370 struct ntnode *ip; 371 372 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 373 374 do { 375 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) { 376 ntfs_ntget(ip); 377 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 378 ino, ip, ip->i_usecount)); 379 *ipp = ip; 380 return (0); 381 } 382 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL)); 383 384 MALLOC(ip, struct ntnode *, sizeof(struct ntnode), 385 M_NTFSNTNODE, M_WAITOK); 386 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 387 bzero((caddr_t) ip, sizeof(struct ntnode)); 388 389 /* Generic initialization */ 390 ip->i_devvp = ntmp->ntm_devvp; 391 ip->i_dev = ntmp->ntm_dev; 392 ip->i_number = ino; 393 ip->i_mp = ntmp; 394 395 LIST_INIT(&ip->i_fnlist); 396 vref(ip->i_devvp); 397 398 /* init lock and lock the newborn ntnode */ 399 lockinit(&ip->i_lock, 0, "ntnode", 0, LK_EXCLUSIVE); 400 spin_init(&ip->i_interlock); 401 ntfs_ntget(ip); 402 403 ntfs_nthashins(ip); 404 405 LOCKMGR(&ntfs_hashlock, LK_RELEASE, NULL); 406 407 *ipp = ip; 408 409 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 410 ino, ip, ip->i_usecount)); 411 412 return (0); 413 } 414 415 /* 416 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 417 * deallocate ntnode. 418 * 419 * ntnode should be locked on entry, and unlocked on return. 420 */ 421 void 422 ntfs_ntput(struct ntnode *ip) 423 { 424 struct ntvattr *vap; 425 426 dprintf(("ntfs_ntput: rele ntnode %"PRId64": %p, usecount: %d\n", 427 ip->i_number, ip, ip->i_usecount)); 428 429 spin_lock(&ip->i_interlock); 430 ip->i_usecount--; 431 432 #ifdef DIAGNOSTIC 433 if (ip->i_usecount < 0) { 434 spin_unlock(&ip->i_interlock); 435 panic("ntfs_ntput: ino: %"PRId64" usecount: %d \n", 436 ip->i_number,ip->i_usecount); 437 } 438 #endif 439 440 if (ip->i_usecount > 0) { 441 LOCKMGR(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock); 442 return; 443 } 444 445 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number)); 446 447 if (ip->i_fnlist.lh_first) { 448 spin_unlock(&ip->i_interlock); 449 panic("ntfs_ntput: ntnode has fnodes\n"); 450 } 451 452 /* 453 * XXX this is a bit iffy because we are making high level calls 454 * while holding a spinlock. 455 */ 456 ntfs_nthashrem(ip); 457 458 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 459 LIST_REMOVE(vap,va_list); 460 ntfs_freentvattr(vap); 461 } 462 spin_unlock(&ip->i_interlock); 463 vrele(ip->i_devvp); 464 FREE(ip, M_NTFSNTNODE); 465 } 466 467 /* 468 * increment usecount of ntnode 469 */ 470 void 471 ntfs_ntref(struct ntnode *ip) 472 { 473 ip->i_usecount++; 474 475 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n", 476 ip->i_number, ip->i_usecount)); 477 478 } 479 480 /* 481 * Decrement usecount of ntnode. 482 */ 483 void 484 ntfs_ntrele(struct ntnode *ip) 485 { 486 lwkt_tokref ilock; 487 488 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n", 489 ip->i_number, ip, ip->i_usecount)); 490 491 spin_lock(&ip->i_interlock); 492 ip->i_usecount--; 493 494 if (ip->i_usecount < 0) { 495 spin_unlock(&ip->i_interlock); 496 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d \n", 497 ip->i_number,ip->i_usecount); 498 } 499 spin_unlock(&ip->i_interlock); 500 } 501 502 /* 503 * Deallocate all memory allocated for ntvattr 504 */ 505 void 506 ntfs_freentvattr(struct ntvattr *vap) 507 { 508 if (vap->va_flag & NTFS_AF_INRUN) { 509 if (vap->va_vruncn) 510 FREE(vap->va_vruncn, M_NTFSRUN); 511 if (vap->va_vruncl) 512 FREE(vap->va_vruncl, M_NTFSRUN); 513 } else { 514 if (vap->va_datap) 515 FREE(vap->va_datap, M_NTFSRDATA); 516 } 517 FREE(vap, M_NTFSNTVATTR); 518 } 519 520 /* 521 * Convert disk image of attribute into ntvattr structure, 522 * runs are expanded also. 523 */ 524 int 525 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp, 526 struct attr *rap) 527 { 528 int error, i; 529 struct ntvattr *vap; 530 531 error = 0; 532 *rvapp = NULL; 533 534 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 535 M_NTFSNTVATTR, M_WAITOK); 536 bzero(vap, sizeof(struct ntvattr)); 537 vap->va_ip = NULL; 538 vap->va_flag = rap->a_hdr.a_flag; 539 vap->va_type = rap->a_hdr.a_type; 540 vap->va_compression = rap->a_hdr.a_compression; 541 vap->va_index = rap->a_hdr.a_index; 542 543 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 544 545 vap->va_namelen = rap->a_hdr.a_namelen; 546 if (rap->a_hdr.a_namelen) { 547 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 548 ddprintf((", name:[")); 549 for (i = 0; i < vap->va_namelen; i++) { 550 vap->va_name[i] = unp[i]; 551 ddprintf(("%c", vap->va_name[i])); 552 } 553 ddprintf(("]")); 554 } 555 if (vap->va_flag & NTFS_AF_INRUN) { 556 ddprintf((", nonres.")); 557 vap->va_datalen = rap->a_nr.a_datalen; 558 vap->va_allocated = rap->a_nr.a_allocated; 559 vap->va_vcnstart = rap->a_nr.a_vcnstart; 560 vap->va_vcnend = rap->a_nr.a_vcnend; 561 vap->va_compressalg = rap->a_nr.a_compressalg; 562 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 563 &(vap->va_vruncnt), 564 (caddr_t) rap + rap->a_nr.a_dataoff); 565 } else { 566 vap->va_compressalg = 0; 567 ddprintf((", res.")); 568 vap->va_datalen = rap->a_r.a_datalen; 569 vap->va_allocated = rap->a_r.a_datalen; 570 vap->va_vcnstart = 0; 571 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 572 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 573 M_NTFSRDATA, M_WAITOK); 574 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 575 rap->a_r.a_datalen); 576 } 577 ddprintf((", len: %d", vap->va_datalen)); 578 579 if (error) 580 FREE(vap, M_NTFSNTVATTR); 581 else 582 *rvapp = vap; 583 584 ddprintf(("\n")); 585 586 return (error); 587 } 588 589 /* 590 * Expand run into more utilizable and more memory eating format. 591 */ 592 int 593 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run) 594 { 595 u_int32_t off; 596 u_int32_t sz, i; 597 cn_t *cn; 598 cn_t *cl; 599 u_long cnt; 600 cn_t prev; 601 cn_t tmp; 602 603 off = 0; 604 cnt = 0; 605 i = 0; 606 while (run[off]) { 607 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 608 cnt++; 609 } 610 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 611 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 612 613 off = 0; 614 cnt = 0; 615 prev = 0; 616 while (run[off]) { 617 618 sz = run[off++]; 619 cl[cnt] = 0; 620 621 for (i = 0; i < (sz & 0xF); i++) 622 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 623 624 sz >>= 4; 625 if (run[off + sz - 1] & 0x80) { 626 tmp = ((u_int64_t) - 1) << (sz << 3); 627 for (i = 0; i < sz; i++) 628 tmp |= (u_int64_t) run[off++] << (i << 3); 629 } else { 630 tmp = 0; 631 for (i = 0; i < sz; i++) 632 tmp |= (u_int64_t) run[off++] << (i << 3); 633 } 634 if (tmp) 635 prev = cn[cnt] = prev + tmp; 636 else 637 cn[cnt] = tmp; 638 639 cnt++; 640 } 641 *rcnp = cn; 642 *rclp = cl; 643 *rcntp = cnt; 644 return (0); 645 } 646 647 /* 648 * Compare unicode and ascii string case insens. 649 */ 650 static int 651 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 652 const char *astr, size_t astrlen) 653 { 654 size_t i; 655 int res; 656 657 /* 658 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 659 * symbols not covered by translation table 660 */ 661 for (i = 0; i < ustrlen && i < astrlen; i++) { 662 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) - 663 ((int)NTFS_TOUPPER(NTFS_82U(astr[i]))); 664 if (res) 665 return res; 666 } 667 return (ustrlen - astrlen); 668 } 669 670 /* 671 * Compare unicode and ascii string case sens. 672 */ 673 static int 674 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 675 const char *astr, size_t astrlen) 676 { 677 size_t i; 678 int res; 679 680 for (i = 0; (i < ustrlen) && (i < astrlen); i++) { 681 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]); 682 if (res) 683 return res; 684 } 685 return (ustrlen - astrlen); 686 } 687 688 /* 689 * Search fnode in ntnode, if not found allocate and preinitialize. 690 * 691 * ntnode should be locked on entry. 692 */ 693 int 694 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype, 695 char *attrname, struct fnode **fpp) 696 { 697 struct fnode *fp; 698 699 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n", 700 ip->i_number,attrtype, attrname?attrname:"")); 701 *fpp = NULL; 702 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 703 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 704 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 705 706 if ((attrtype == fp->f_attrtype) && 707 ((!attrname && !fp->f_attrname) || 708 (attrname && fp->f_attrname && 709 !strcmp(attrname,fp->f_attrname)))){ 710 dprintf(("ntfs_fget: found existed: %p\n",fp)); 711 *fpp = fp; 712 } 713 } 714 715 if (*fpp) 716 return (0); 717 718 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK); 719 bzero(fp, sizeof(struct fnode)); 720 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 721 722 fp->f_ip = ip; 723 if (attrname) { 724 fp->f_flag |= FN_AATTRNAME; 725 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 726 strcpy(fp->f_attrname, attrname); 727 } else 728 fp->f_attrname = NULL; 729 fp->f_attrtype = attrtype; 730 731 ntfs_ntref(ip); 732 733 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 734 735 *fpp = fp; 736 737 return (0); 738 } 739 740 /* 741 * Deallocate fnode, remove it from ntnode's fnode list. 742 * 743 * ntnode should be locked. 744 */ 745 void 746 ntfs_frele(struct fnode *fp) 747 { 748 struct ntnode *ip = FTONT(fp); 749 750 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip)); 751 752 dprintf(("ntfs_frele: deallocating fnode\n")); 753 LIST_REMOVE(fp,f_fnlist); 754 if (fp->f_flag & FN_AATTRNAME) 755 FREE(fp->f_attrname, M_TEMP); 756 if (fp->f_dirblbuf) 757 FREE(fp->f_dirblbuf, M_NTFSDIR); 758 FREE(fp, M_NTFSFNODE); 759 ntfs_ntrele(ip); 760 } 761 762 /* 763 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 764 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 765 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 766 */ 767 static int 768 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen, 769 int *attrtype, char **attrname) 770 { 771 const char *sys; 772 size_t syslen, i; 773 struct ntvattrdef *adp; 774 775 if (namelen == 0) 776 return (0); 777 778 if (name[0] == '$') { 779 sys = name; 780 for (syslen = 0; syslen < namelen; syslen++) { 781 if(sys[syslen] == ':') { 782 name++; 783 namelen--; 784 break; 785 } 786 } 787 name += syslen; 788 namelen -= syslen; 789 790 adp = ntmp->ntm_ad; 791 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 792 if (syslen != adp->ad_namelen || 793 strncmp(sys, adp->ad_name, syslen) != 0) 794 continue; 795 796 *attrtype = adp->ad_type; 797 goto out; 798 } 799 return (ENOENT); 800 } else 801 *attrtype = NTFS_A_DATA; 802 803 out: 804 if (namelen) { 805 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 806 memcpy((*attrname), name, namelen); 807 (*attrname)[namelen] = '\0'; 808 } 809 810 return (0); 811 } 812 813 /* 814 * Lookup specifed node for filename, matching cnp, 815 * return fnode filled. 816 */ 817 int 818 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp, 819 struct componentname *cnp, struct vnode **vpp) 820 { 821 struct fnode *fp = VTOF(vp); 822 struct ntnode *ip = FTONT(fp); 823 struct ntvattr *vap; /* Root attribute */ 824 cn_t cn; /* VCN in current attribute */ 825 caddr_t rdbuf; /* Buffer to read directory's blocks */ 826 u_int32_t blsize; 827 u_int32_t rdsize; /* Length of data to read from current block */ 828 struct attr_indexentry *iep; 829 int error, res, anamelen, fnamelen; 830 const char *fname,*aname; 831 u_int32_t aoff; 832 int attrtype = NTFS_A_DATA; 833 char *attrname = NULL; 834 struct fnode *nfp; 835 struct vnode *nvp; 836 enum vtype f_type; 837 838 error = ntfs_ntget(ip); 839 if (error) 840 return (error); 841 842 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 843 if (error || (vap->va_flag & NTFS_AF_INRUN)) 844 return (ENOTDIR); 845 846 blsize = vap->va_a_iroot->ir_size; 847 rdsize = vap->va_datalen; 848 849 /* 850 * Divide file name into: foofilefoofilefoofile[:attrspec] 851 * Store like this: fname:fnamelen [aname:anamelen] 852 */ 853 fname = cnp->cn_nameptr; 854 aname = NULL; 855 anamelen = 0; 856 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 857 if(fname[fnamelen] == ':') { 858 aname = fname + fnamelen + 1; 859 anamelen = cnp->cn_namelen - fnamelen - 1; 860 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 861 fname, fnamelen, aname, anamelen)); 862 break; 863 } 864 865 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 866 867 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 868 869 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 870 0, rdsize, rdbuf, NULL); 871 if (error) 872 goto fail; 873 874 aoff = sizeof(struct attr_indexroot); 875 876 do { 877 iep = (struct attr_indexentry *) (rdbuf + aoff); 878 879 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 880 aoff += iep->reclen, 881 iep = (struct attr_indexentry *) (rdbuf + aoff)) 882 { 883 ddprintf(("scan: %d, %d\n", 884 (u_int32_t) iep->ie_number, 885 (u_int32_t) iep->ie_fnametype)); 886 887 /* check the name - the case-insensitible check 888 * has to come first, to break from this for loop 889 * if needed, so we can dive correctly */ 890 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 891 fname, fnamelen); 892 if (res > 0) break; 893 if (res < 0) continue; 894 895 if (iep->ie_fnametype == 0 || 896 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 897 { 898 res = NTFS_UASTRCMP(iep->ie_fname, 899 iep->ie_fnamelen, fname, fnamelen); 900 if (res != 0) continue; 901 } 902 903 if (aname) { 904 error = ntfs_ntlookupattr(ntmp, 905 aname, anamelen, 906 &attrtype, &attrname); 907 if (error) 908 goto fail; 909 } 910 911 /* Check if we've found ourself */ 912 if ((iep->ie_number == ip->i_number) && 913 (attrtype == fp->f_attrtype) && 914 ((!attrname && !fp->f_attrname) || 915 (attrname && fp->f_attrname && 916 !strcmp(attrname, fp->f_attrname)))) 917 { 918 vref(vp); 919 *vpp = vp; 920 error = 0; 921 goto fail; 922 } 923 924 /* vget node, but don't load it */ 925 error = ntfs_vgetex(ntmp->ntm_mountp, 926 iep->ie_number, attrtype, attrname, 927 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 928 curthread, &nvp); 929 930 /* free the buffer returned by ntfs_ntlookupattr() */ 931 if (attrname) { 932 FREE(attrname, M_TEMP); 933 attrname = NULL; 934 } 935 936 if (error) 937 goto fail; 938 939 nfp = VTOF(nvp); 940 941 if (nfp->f_flag & FN_VALID) { 942 *vpp = nvp; 943 goto fail; 944 } 945 946 nfp->f_fflag = iep->ie_fflag; 947 nfp->f_pnumber = iep->ie_fpnumber; 948 nfp->f_times = iep->ie_ftimes; 949 950 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 951 (nfp->f_attrtype == NTFS_A_DATA) && 952 (nfp->f_attrname == NULL)) 953 f_type = VDIR; 954 else 955 f_type = VREG; 956 957 nvp->v_type = f_type; 958 959 if ((nfp->f_attrtype == NTFS_A_DATA) && 960 (nfp->f_attrname == NULL)) 961 { 962 /* Opening default attribute */ 963 nfp->f_size = iep->ie_fsize; 964 nfp->f_allocated = iep->ie_fallocated; 965 nfp->f_flag |= FN_PRELOADED; 966 } else { 967 error = ntfs_filesize(ntmp, nfp, 968 &nfp->f_size, &nfp->f_allocated); 969 if (error) { 970 vput(nvp); 971 goto fail; 972 } 973 } 974 975 nfp->f_flag &= ~FN_VALID; 976 *vpp = nvp; 977 goto fail; 978 } 979 980 /* Dive if possible */ 981 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 982 dprintf(("ntfs_ntlookupfile: diving\n")); 983 984 cn = *(cn_t *) (rdbuf + aoff + 985 iep->reclen - sizeof(cn_t)); 986 rdsize = blsize; 987 988 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 989 ntfs_cntob(cn), rdsize, rdbuf, NULL); 990 if (error) 991 goto fail; 992 993 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 994 rdbuf, rdsize); 995 if (error) 996 goto fail; 997 998 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 999 0x18); 1000 } else { 1001 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1002 error = ENOENT; 1003 break; 1004 } 1005 } while (1); 1006 1007 dprintf(("finish\n")); 1008 1009 fail: 1010 if (attrname) FREE(attrname, M_TEMP); 1011 ntfs_ntvattrrele(vap); 1012 ntfs_ntput(ip); 1013 FREE(rdbuf, M_TEMP); 1014 return (error); 1015 } 1016 1017 /* 1018 * Check if name type is permitted to show. 1019 */ 1020 int 1021 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep) 1022 { 1023 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1024 return 1; 1025 1026 switch (iep->ie_fnametype) { 1027 case 2: 1028 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1029 return 0; 1030 case 0: case 1: case 3: 1031 return 1; 1032 default: 1033 printf("ntfs_isnamepermitted: " \ 1034 "WARNING! Unknown file name type: %d\n", 1035 iep->ie_fnametype); 1036 break; 1037 } 1038 return 0; 1039 } 1040 1041 /* 1042 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1043 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1044 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1045 * fnode, so we can skip toward record number num almost immediatly. 1046 * Anyway this is rather slow routine. The problem is that we don't know 1047 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1048 */ 1049 int 1050 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp, 1051 u_int32_t num, struct attr_indexentry **riepp) 1052 { 1053 struct ntnode *ip = FTONT(fp); 1054 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1055 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1056 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1057 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1058 u_char *bmp = NULL; /* Bitmap */ 1059 u_int32_t blsize; /* Index allocation size (2048) */ 1060 u_int32_t rdsize; /* Length of data to read */ 1061 u_int32_t attrnum; /* Current attribute type */ 1062 u_int32_t cpbl = 1; /* Clusters per directory block */ 1063 u_int32_t blnum; 1064 struct attr_indexentry *iep; 1065 int error = ENOENT; 1066 u_int32_t aoff, cnum; 1067 1068 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num)); 1069 error = ntfs_ntget(ip); 1070 if (error) 1071 return (error); 1072 1073 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1074 if (error) 1075 return (ENOTDIR); 1076 1077 if (fp->f_dirblbuf == NULL) { 1078 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1079 MALLOC(fp->f_dirblbuf, caddr_t, 1080 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1081 } 1082 1083 blsize = fp->f_dirblsz; 1084 rdbuf = fp->f_dirblbuf; 1085 1086 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1087 1088 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1089 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1090 0, &bmvap); 1091 if (error) { 1092 error = ENOTDIR; 1093 goto fail; 1094 } 1095 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1096 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1097 bmvap->va_datalen, bmp, NULL); 1098 if (error) 1099 goto fail; 1100 1101 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1102 0, &iavap); 1103 if (error) { 1104 error = ENOTDIR; 1105 goto fail; 1106 } 1107 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1108 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1109 iavap->va_datalen, cpbl)); 1110 } else { 1111 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1112 iavap = bmvap = NULL; 1113 bmp = NULL; 1114 } 1115 1116 /* Try use previous values */ 1117 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1118 attrnum = fp->f_lastdattr; 1119 aoff = fp->f_lastdoff; 1120 blnum = fp->f_lastdblnum; 1121 cnum = fp->f_lastdnum; 1122 } else { 1123 attrnum = NTFS_A_INDXROOT; 1124 aoff = sizeof(struct attr_indexroot); 1125 blnum = 0; 1126 cnum = 0; 1127 } 1128 1129 do { 1130 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1131 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1132 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1133 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1134 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1135 if (error) 1136 goto fail; 1137 1138 if (attrnum == NTFS_A_INDX) { 1139 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1140 rdbuf, rdsize); 1141 if (error) 1142 goto fail; 1143 } 1144 if (aoff == 0) 1145 aoff = (attrnum == NTFS_A_INDX) ? 1146 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1147 sizeof(struct attr_indexroot); 1148 1149 iep = (struct attr_indexentry *) (rdbuf + aoff); 1150 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1151 aoff += iep->reclen, 1152 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1153 { 1154 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1155 1156 if (cnum >= num) { 1157 fp->f_lastdnum = cnum; 1158 fp->f_lastdoff = aoff; 1159 fp->f_lastdblnum = blnum; 1160 fp->f_lastdattr = attrnum; 1161 1162 *riepp = iep; 1163 1164 error = 0; 1165 goto fail; 1166 } 1167 cnum++; 1168 } 1169 1170 if (iavap) { 1171 if (attrnum == NTFS_A_INDXROOT) 1172 blnum = 0; 1173 else 1174 blnum++; 1175 1176 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1177 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1178 break; 1179 blnum++; 1180 } 1181 1182 attrnum = NTFS_A_INDX; 1183 aoff = 0; 1184 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1185 break; 1186 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1187 } 1188 } while (iavap); 1189 1190 *riepp = NULL; 1191 fp->f_lastdnum = 0; 1192 1193 fail: 1194 if (vap) 1195 ntfs_ntvattrrele(vap); 1196 if (bmvap) 1197 ntfs_ntvattrrele(bmvap); 1198 if (iavap) 1199 ntfs_ntvattrrele(iavap); 1200 if (bmp) 1201 FREE(bmp, M_TEMP); 1202 ntfs_ntput(ip); 1203 return (error); 1204 } 1205 1206 /* 1207 * Convert NTFS times that are in 100 ns units and begins from 1208 * 1601 Jan 1 into unix times. 1209 */ 1210 struct timespec 1211 ntfs_nttimetounix(u_int64_t nt) 1212 { 1213 struct timespec t; 1214 1215 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1216 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1217 t.tv_sec = nt / (1000 * 1000 * 10) - 1218 369LL * 365LL * 24LL * 60LL * 60LL - 1219 89LL * 1LL * 24LL * 60LL * 60LL; 1220 return (t); 1221 } 1222 1223 /* 1224 * Get file times from NTFS_A_NAME attribute. 1225 */ 1226 int 1227 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm) 1228 { 1229 struct ntvattr *vap; 1230 int error; 1231 1232 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number)); 1233 1234 error = ntfs_ntget(ip); 1235 if (error) 1236 return (error); 1237 1238 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1239 if (error) { 1240 ntfs_ntput(ip); 1241 return (error); 1242 } 1243 *tm = vap->va_a_name->n_times; 1244 ntfs_ntvattrrele(vap); 1245 ntfs_ntput(ip); 1246 1247 return (0); 1248 } 1249 1250 /* 1251 * Get file sizes from corresponding attribute. 1252 * 1253 * ntnode under fnode should be locked. 1254 */ 1255 int 1256 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size, 1257 u_int64_t *bytes) 1258 { 1259 struct ntvattr *vap; 1260 struct ntnode *ip = FTONT(fp); 1261 u_int64_t sz, bn; 1262 int error; 1263 1264 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number)); 1265 1266 error = ntfs_ntvattrget(ntmp, ip, 1267 fp->f_attrtype, fp->f_attrname, 0, &vap); 1268 if (error) 1269 return (error); 1270 1271 bn = vap->va_allocated; 1272 sz = vap->va_datalen; 1273 1274 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1275 (u_int32_t) sz, (u_int32_t) bn)); 1276 1277 if (size) 1278 *size = sz; 1279 if (bytes) 1280 *bytes = bn; 1281 1282 ntfs_ntvattrrele(vap); 1283 1284 return (0); 1285 } 1286 1287 /* 1288 * This is one of write routine. 1289 */ 1290 int 1291 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1292 u_int32_t attrnum, char *attrname, off_t roff, 1293 size_t rsize, void *rdata, size_t *initp, 1294 struct uio *uio) 1295 { 1296 size_t init; 1297 int error = 0; 1298 off_t off = roff, left = rsize, towrite; 1299 caddr_t data = rdata; 1300 struct ntvattr *vap; 1301 *initp = 0; 1302 1303 while (left) { 1304 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1305 ntfs_btocn(off), &vap); 1306 if (error) 1307 return (error); 1308 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1309 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1310 (u_int32_t) off, (u_int32_t) towrite, 1311 (u_int32_t) vap->va_vcnstart, 1312 (u_int32_t) vap->va_vcnend)); 1313 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1314 off - ntfs_cntob(vap->va_vcnstart), 1315 towrite, data, &init, uio); 1316 if (error) { 1317 printf("ntfs_writeattr_plain: " \ 1318 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1319 (u_int32_t) off, (u_int32_t) towrite); 1320 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1321 (u_int32_t) vap->va_vcnstart, 1322 (u_int32_t) vap->va_vcnend); 1323 ntfs_ntvattrrele(vap); 1324 break; 1325 } 1326 ntfs_ntvattrrele(vap); 1327 left -= towrite; 1328 off += towrite; 1329 data = data + towrite; 1330 *initp += init; 1331 } 1332 1333 return (error); 1334 } 1335 1336 /* 1337 * This is one of write routine. 1338 * 1339 * ntnode should be locked. 1340 */ 1341 int 1342 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1343 struct ntvattr *vap, off_t roff, size_t rsize, 1344 void *rdata, size_t *initp, struct uio *uio) 1345 { 1346 int error = 0; 1347 int off; 1348 int cnt; 1349 cn_t ccn, ccl, cn, left, cl; 1350 caddr_t data = rdata; 1351 struct buf *bp; 1352 size_t tocopy; 1353 1354 *initp = 0; 1355 1356 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1357 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1358 return ENOTTY; 1359 } 1360 1361 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1362 vap->va_vruncnt)); 1363 1364 off = roff; 1365 left = rsize; 1366 ccl = 0; 1367 ccn = 0; 1368 cnt = 0; 1369 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1370 ccn = vap->va_vruncn[cnt]; 1371 ccl = vap->va_vruncl[cnt]; 1372 1373 ddprintf(("ntfs_writentvattr_plain: " \ 1374 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1375 (u_int32_t) left, (u_int32_t) ccn, \ 1376 (u_int32_t) ccl, (u_int32_t) off)); 1377 1378 if (ntfs_cntob(ccl) < off) { 1379 off -= ntfs_cntob(ccl); 1380 cnt++; 1381 continue; 1382 } 1383 if (!ccn && ip->i_number != NTFS_BOOTINO) 1384 continue; /* XXX */ 1385 1386 ccl -= ntfs_btocn(off); 1387 cn = ccn + ntfs_btocn(off); 1388 off = ntfs_btocnoff(off); 1389 1390 while (left && ccl) { 1391 #if defined(__DragonFly__) 1392 tocopy = min(left, 1393 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1394 #else 1395 /* under NetBSD, bread() can read 1396 * maximum one block worth of data */ 1397 tocopy = min(left, ntmp->ntm_bps - off); 1398 #endif 1399 cl = ntfs_btocl(tocopy + off); 1400 ddprintf(("ntfs_writentvattr_plain: write: " \ 1401 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1402 (u_int32_t) cn, (u_int32_t) cl, 1403 (u_int32_t) off, (u_int32_t) tocopy, 1404 (u_int32_t) left)); 1405 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1406 { 1407 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1408 ntfs_cntob(cl), 0, 0); 1409 clrbuf(bp); 1410 } else { 1411 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1412 ntfs_cntob(cl), &bp); 1413 if (error) { 1414 brelse(bp); 1415 return (error); 1416 } 1417 } 1418 if (uio) 1419 uiomove(bp->b_data + off, tocopy, uio); 1420 else 1421 memcpy(bp->b_data + off, data, tocopy); 1422 bawrite(bp); 1423 data = data + tocopy; 1424 *initp += tocopy; 1425 off = 0; 1426 left -= tocopy; 1427 cn += cl; 1428 ccl -= cl; 1429 } 1430 } 1431 1432 if (left) { 1433 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1434 error = EINVAL; 1435 } 1436 1437 return (error); 1438 } 1439 1440 /* 1441 * This is one of read routines. 1442 * 1443 * ntnode should be locked. 1444 */ 1445 int 1446 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1447 struct ntvattr *vap, off_t roff, size_t rsize, 1448 void *rdata, size_t *initp, struct uio *uio) 1449 { 1450 int error = 0; 1451 int off; 1452 1453 *initp = 0; 1454 if (vap->va_flag & NTFS_AF_INRUN) { 1455 int cnt; 1456 cn_t ccn, ccl, cn, left, cl; 1457 caddr_t data = rdata; 1458 struct buf *bp; 1459 size_t tocopy; 1460 1461 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1462 vap->va_vruncnt)); 1463 1464 off = roff; 1465 left = rsize; 1466 ccl = 0; 1467 ccn = 0; 1468 cnt = 0; 1469 while (left && (cnt < vap->va_vruncnt)) { 1470 ccn = vap->va_vruncn[cnt]; 1471 ccl = vap->va_vruncl[cnt]; 1472 1473 ddprintf(("ntfs_readntvattr_plain: " \ 1474 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1475 (u_int32_t) left, (u_int32_t) ccn, \ 1476 (u_int32_t) ccl, (u_int32_t) off)); 1477 1478 if (ntfs_cntob(ccl) < off) { 1479 off -= ntfs_cntob(ccl); 1480 cnt++; 1481 continue; 1482 } 1483 if (ccn || ip->i_number == NTFS_BOOTINO) { 1484 ccl -= ntfs_btocn(off); 1485 cn = ccn + ntfs_btocn(off); 1486 off = ntfs_btocnoff(off); 1487 1488 while (left && ccl) { 1489 #if defined(__DragonFly__) 1490 tocopy = min(left, 1491 min(ntfs_cntob(ccl) - off, 1492 MAXBSIZE - off)); 1493 #else 1494 /* under NetBSD, bread() can read 1495 * maximum one block worth of data */ 1496 tocopy = min(left, 1497 ntmp->ntm_bps - off); 1498 #endif 1499 cl = ntfs_btocl(tocopy + off); 1500 ddprintf(("ntfs_readntvattr_plain: " \ 1501 "read: cn: 0x%x cl: %d, " \ 1502 "off: %d len: %d, left: %d\n", 1503 (u_int32_t) cn, 1504 (u_int32_t) cl, 1505 (u_int32_t) off, 1506 (u_int32_t) tocopy, 1507 (u_int32_t) left)); 1508 error = bread(ntmp->ntm_devvp, 1509 ntfs_cntobn(cn), 1510 ntfs_cntob(cl), 1511 &bp); 1512 if (error) { 1513 brelse(bp); 1514 return (error); 1515 } 1516 if (uio) { 1517 uiomove(bp->b_data + off, 1518 tocopy, uio); 1519 } else { 1520 memcpy(data, bp->b_data + off, 1521 tocopy); 1522 } 1523 brelse(bp); 1524 data = data + tocopy; 1525 *initp += tocopy; 1526 off = 0; 1527 left -= tocopy; 1528 cn += cl; 1529 ccl -= cl; 1530 } 1531 } else { 1532 tocopy = min(left, ntfs_cntob(ccl) - off); 1533 ddprintf(("ntfs_readntvattr_plain: " 1534 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1535 " len: %d, left: %d\n", 1536 (u_int32_t) ccn, (u_int32_t) ccl, 1537 (u_int32_t) off, (u_int32_t) tocopy, 1538 (u_int32_t) left)); 1539 left -= tocopy; 1540 off = 0; 1541 if (uio) { 1542 size_t remains = tocopy; 1543 for(; remains; remains++) 1544 uiomove("", 1, uio); 1545 } else 1546 bzero(data, tocopy); 1547 data = data + tocopy; 1548 } 1549 cnt++; 1550 } 1551 if (left) { 1552 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1553 error = E2BIG; 1554 } 1555 } else { 1556 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1557 if (uio) 1558 uiomove(vap->va_datap + roff, rsize, uio); 1559 else 1560 memcpy(rdata, vap->va_datap + roff, rsize); 1561 *initp += rsize; 1562 } 1563 1564 return (error); 1565 } 1566 1567 /* 1568 * This is one of read routines. 1569 */ 1570 int 1571 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1572 u_int32_t attrnum, char *attrname, off_t roff, 1573 size_t rsize, void *rdata, size_t * initp, 1574 struct uio *uio) 1575 { 1576 size_t init; 1577 int error = 0; 1578 off_t off = roff, left = rsize, toread; 1579 caddr_t data = rdata; 1580 struct ntvattr *vap; 1581 *initp = 0; 1582 1583 while (left) { 1584 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1585 ntfs_btocn(off), &vap); 1586 if (error) 1587 return (error); 1588 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1589 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1590 (u_int32_t) off, (u_int32_t) toread, 1591 (u_int32_t) vap->va_vcnstart, 1592 (u_int32_t) vap->va_vcnend)); 1593 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1594 off - ntfs_cntob(vap->va_vcnstart), 1595 toread, data, &init, uio); 1596 if (error) { 1597 printf("ntfs_readattr_plain: " \ 1598 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1599 (u_int32_t) off, (u_int32_t) toread); 1600 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1601 (u_int32_t) vap->va_vcnstart, 1602 (u_int32_t) vap->va_vcnend); 1603 ntfs_ntvattrrele(vap); 1604 break; 1605 } 1606 ntfs_ntvattrrele(vap); 1607 left -= toread; 1608 off += toread; 1609 data = data + toread; 1610 *initp += init; 1611 } 1612 1613 return (error); 1614 } 1615 1616 /* 1617 * This is one of read routines. 1618 */ 1619 int 1620 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum, 1621 char *attrname, off_t roff, size_t rsize, void *rdata, 1622 struct uio *uio) 1623 { 1624 int error = 0; 1625 struct ntvattr *vap; 1626 size_t init; 1627 1628 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n", 1629 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1630 1631 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1632 if (error) 1633 return (error); 1634 1635 if ((roff > vap->va_datalen) || 1636 (roff + rsize > vap->va_datalen)) { 1637 ddprintf(("ntfs_readattr: offset too big\n")); 1638 ntfs_ntvattrrele(vap); 1639 return (E2BIG); 1640 } 1641 if (vap->va_compression && vap->va_compressalg) { 1642 u_int8_t *cup; 1643 u_int8_t *uup; 1644 off_t off = roff, left = rsize, tocopy; 1645 caddr_t data = rdata; 1646 cn_t cn; 1647 1648 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1649 vap->va_compressalg)); 1650 1651 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1652 M_NTFSDECOMP, M_WAITOK); 1653 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1654 M_NTFSDECOMP, M_WAITOK); 1655 1656 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1657 off = roff - ntfs_cntob(cn); 1658 1659 while (left) { 1660 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1661 attrname, ntfs_cntob(cn), 1662 ntfs_cntob(NTFS_COMPUNIT_CL), 1663 cup, &init, NULL); 1664 if (error) 1665 break; 1666 1667 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1668 1669 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1670 if (uio) 1671 uiomove(cup + off, tocopy, uio); 1672 else 1673 memcpy(data, cup + off, tocopy); 1674 } else if (init == 0) { 1675 if (uio) { 1676 size_t remains = tocopy; 1677 for(; remains; remains--) 1678 uiomove("", 1, uio); 1679 } 1680 else 1681 bzero(data, tocopy); 1682 } else { 1683 error = ntfs_uncompunit(ntmp, uup, cup); 1684 if (error) 1685 break; 1686 if (uio) 1687 uiomove(uup + off, tocopy, uio); 1688 else 1689 memcpy(data, uup + off, tocopy); 1690 } 1691 1692 left -= tocopy; 1693 data = data + tocopy; 1694 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1695 cn += NTFS_COMPUNIT_CL; 1696 } 1697 1698 FREE(uup, M_NTFSDECOMP); 1699 FREE(cup, M_NTFSDECOMP); 1700 } else 1701 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1702 roff, rsize, rdata, &init, uio); 1703 ntfs_ntvattrrele(vap); 1704 return (error); 1705 } 1706 1707 #if UNUSED_CODE 1708 int 1709 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off) 1710 { 1711 u_int8_t sz; 1712 int i; 1713 1714 if (NULL == run) { 1715 printf("ntfs_parsetun: run == NULL\n"); 1716 return (EINVAL); 1717 } 1718 sz = run[(*off)++]; 1719 if (0 == sz) { 1720 printf("ntfs_parserun: trying to go out of run\n"); 1721 return (E2BIG); 1722 } 1723 *cl = 0; 1724 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1725 printf("ntfs_parserun: " \ 1726 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1727 sz, len, *off); 1728 return (EINVAL); 1729 } 1730 for (i = 0; i < (sz & 0xF); i++) 1731 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1732 1733 sz >>= 4; 1734 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1735 printf("ntfs_parserun: " \ 1736 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1737 sz, len, *off); 1738 return (EINVAL); 1739 } 1740 for (i = 0; i < (sz & 0xF); i++) 1741 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1742 1743 return (0); 1744 } 1745 #endif 1746 1747 /* 1748 * Process fixup routine on given buffer. 1749 */ 1750 int 1751 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf, 1752 size_t len) 1753 { 1754 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1755 int i; 1756 u_int16_t fixup; 1757 u_int16_t *fxp; 1758 u_int16_t *cfxp; 1759 1760 if (fhp->fh_magic != magic) { 1761 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1762 fhp->fh_magic, magic); 1763 return (EINVAL); 1764 } 1765 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1766 printf("ntfs_procfixups: " \ 1767 "bad fixups number: %d for %ld bytes block\n", 1768 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1769 return (EINVAL); 1770 } 1771 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1772 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1773 return (EINVAL); 1774 } 1775 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1776 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1777 fixup = *fxp++; 1778 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1779 if (*cfxp != fixup) { 1780 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1781 return (EINVAL); 1782 } 1783 *cfxp = *fxp; 1784 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps); 1785 } 1786 return (0); 1787 } 1788 1789 #if UNUSED_CODE 1790 int 1791 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len, 1792 cn_t vcn) 1793 { 1794 cn_t ccn = 0; 1795 cn_t ccl = 0; 1796 u_long off = 0; 1797 int error = 0; 1798 1799 #if NTFS_DEBUG 1800 int i; 1801 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1802 run, len, (u_long) vcn); 1803 printf("ntfs_runtocn: run: "); 1804 for (i = 0; i < len; i++) 1805 printf("0x%02x ", run[i]); 1806 printf("\n"); 1807 #endif 1808 1809 if (NULL == run) { 1810 printf("ntfs_runtocn: run == NULL\n"); 1811 return (EINVAL); 1812 } 1813 do { 1814 if (run[off] == 0) { 1815 printf("ntfs_runtocn: vcn too big\n"); 1816 return (E2BIG); 1817 } 1818 vcn -= ccl; 1819 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1820 if (error) { 1821 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1822 return (error); 1823 } 1824 } while (ccl <= vcn); 1825 *cn = ccn + vcn; 1826 return (0); 1827 } 1828 #endif 1829 1830 /* 1831 * this initializes toupper table & dependant variables to be ready for 1832 * later work 1833 */ 1834 void 1835 ntfs_toupper_init(void) 1836 { 1837 ntfs_toupper_tab = (wchar *) NULL; 1838 lockinit(&ntfs_toupper_lock, 0, "ntfs_toupper", 0, 0); 1839 ntfs_toupper_usecount = 0; 1840 } 1841 1842 /* 1843 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1844 * otherwise read the data from the filesystem we are currently mounting 1845 */ 1846 int 1847 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp) 1848 { 1849 int error = 0; 1850 struct vnode *vp; 1851 1852 /* get exclusive access */ 1853 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1854 1855 /* only read the translation data from a file if it hasn't been 1856 * read already */ 1857 if (ntfs_toupper_tab) 1858 goto out; 1859 1860 /* 1861 * Read in Unicode lowercase -> uppercase translation file. 1862 * XXX for now, just the first 256 entries are used anyway, 1863 * so don't bother reading more 1864 */ 1865 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1866 M_NTFSRDATA, M_WAITOK); 1867 1868 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1869 goto out; 1870 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1871 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1872 vput(vp); 1873 1874 out: 1875 ntfs_toupper_usecount++; 1876 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1877 return (error); 1878 } 1879 1880 /* 1881 * lower the use count and if it reaches zero, free the memory 1882 * tied by toupper table 1883 */ 1884 void 1885 ntfs_toupper_unuse(void) 1886 { 1887 /* get exclusive access */ 1888 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1889 1890 ntfs_toupper_usecount--; 1891 if (ntfs_toupper_usecount == 0) { 1892 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1893 ntfs_toupper_tab = NULL; 1894 } 1895 #ifdef DIAGNOSTIC 1896 else if (ntfs_toupper_usecount < 0) { 1897 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1898 ntfs_toupper_usecount); 1899 } 1900 #endif 1901 1902 /* release the lock */ 1903 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL); 1904 } 1905 1906 int 1907 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w) 1908 { 1909 char ** u28; 1910 int i, j, h, l; 1911 1912 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 1913 1914 for (i=0; i<256; i++) { 1915 h = (u2w[i] >> 8) & 0xFF; 1916 l = (u2w[i]) &0xFF; 1917 1918 if (u28[h] == NULL) { 1919 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 1920 for (j=0; j<256; j++) 1921 u28[h][j] = '_'; 1922 } 1923 1924 u28[h][l] = i & 0xFF; 1925 } 1926 1927 ntmp->ntm_u28 = u28; 1928 1929 return (0); 1930 } 1931 1932 int 1933 ntfs_u28_uninit(struct ntfsmount *ntmp) 1934 { 1935 char ** u28; 1936 int i; 1937 1938 if (ntmp->ntm_u28 == NULL) 1939 return (0); 1940 1941 u28 = ntmp->ntm_u28; 1942 1943 for (i=0; i<256; i++) 1944 if (u28[i] != NULL) 1945 FREE(u28[i], M_TEMP); 1946 1947 FREE(u28, M_TEMP); 1948 1949 return (0); 1950 } 1951 1952 int 1953 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w) 1954 { 1955 wchar * _82u; 1956 int i; 1957 1958 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 1959 1960 if (u2w == NULL) { 1961 for (i=0; i<256; i++) 1962 _82u[i] = i; 1963 } else { 1964 for (i=0; i<128; i++) 1965 _82u[i] = i; 1966 for (i=0; i<128; i++) 1967 _82u[i+128] = u2w[i]; 1968 } 1969 1970 ntmp->ntm_82u = _82u; 1971 1972 return (0); 1973 } 1974 1975 int 1976 ntfs_82u_uninit(struct ntfsmount *ntmp) 1977 { 1978 FREE(ntmp->ntm_82u, M_TEMP); 1979 return (0); 1980 } 1981 1982 /* 1983 * maps the Unicode char to 8bit equivalent 1984 * XXX currently only gets lower 8bit from the Unicode char 1985 * and substitutes a '_' for it if the result would be '\0'; 1986 * something better has to be definitely though out 1987 */ 1988 char 1989 ntfs_u28(struct ntfsmount *ntmp, wchar wc) 1990 { 1991 char * p; 1992 1993 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 1994 if (p == NULL) 1995 return ('_'); 1996 return (p[wc&0xFF]); 1997 } 1998 1999