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 1.26 2007/08/21 17:26:48 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 kprintf("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 kprintf("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 kprintf("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 kprintf("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 kprintf("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 kprintf("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 kprintf("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); 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)); 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); 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_wr(&ip->i_interlock); 428 ip->i_usecount--; 429 430 #ifdef DIAGNOSTIC 431 if (ip->i_usecount < 0) { 432 spin_unlock_wr(&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 spin_unlock_wr(&ip->i_interlock); 440 LOCKMGR(&ip->i_lock, LK_RELEASE); 441 return; 442 } 443 444 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number)); 445 446 if (ip->i_fnlist.lh_first) { 447 spin_unlock_wr(&ip->i_interlock); 448 panic("ntfs_ntput: ntnode has fnodes\n"); 449 } 450 451 /* 452 * XXX this is a bit iffy because we are making high level calls 453 * while holding a spinlock. 454 */ 455 ntfs_nthashrem(ip); 456 457 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 458 LIST_REMOVE(vap,va_list); 459 ntfs_freentvattr(vap); 460 } 461 spin_unlock_wr(&ip->i_interlock); 462 vrele(ip->i_devvp); 463 FREE(ip, M_NTFSNTNODE); 464 } 465 466 /* 467 * increment usecount of ntnode 468 */ 469 void 470 ntfs_ntref(struct ntnode *ip) 471 { 472 ip->i_usecount++; 473 474 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n", 475 ip->i_number, ip->i_usecount)); 476 477 } 478 479 /* 480 * Decrement usecount of ntnode. 481 */ 482 void 483 ntfs_ntrele(struct ntnode *ip) 484 { 485 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n", 486 ip->i_number, ip, ip->i_usecount)); 487 488 spin_lock_wr(&ip->i_interlock); 489 ip->i_usecount--; 490 491 if (ip->i_usecount < 0) { 492 spin_unlock_wr(&ip->i_interlock); 493 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d \n", 494 ip->i_number,ip->i_usecount); 495 } 496 spin_unlock_wr(&ip->i_interlock); 497 } 498 499 /* 500 * Deallocate all memory allocated for ntvattr 501 */ 502 void 503 ntfs_freentvattr(struct ntvattr *vap) 504 { 505 if (vap->va_flag & NTFS_AF_INRUN) { 506 if (vap->va_vruncn) 507 FREE(vap->va_vruncn, M_NTFSRUN); 508 if (vap->va_vruncl) 509 FREE(vap->va_vruncl, M_NTFSRUN); 510 } else { 511 if (vap->va_datap) 512 FREE(vap->va_datap, M_NTFSRDATA); 513 } 514 FREE(vap, M_NTFSNTVATTR); 515 } 516 517 /* 518 * Convert disk image of attribute into ntvattr structure, 519 * runs are expanded also. 520 */ 521 int 522 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp, 523 struct attr *rap) 524 { 525 int error, i; 526 struct ntvattr *vap; 527 528 error = 0; 529 *rvapp = NULL; 530 531 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 532 M_NTFSNTVATTR, M_WAITOK); 533 bzero(vap, sizeof(struct ntvattr)); 534 vap->va_ip = NULL; 535 vap->va_flag = rap->a_hdr.a_flag; 536 vap->va_type = rap->a_hdr.a_type; 537 vap->va_compression = rap->a_hdr.a_compression; 538 vap->va_index = rap->a_hdr.a_index; 539 540 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 541 542 vap->va_namelen = rap->a_hdr.a_namelen; 543 if (rap->a_hdr.a_namelen) { 544 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 545 ddprintf((", name:[")); 546 for (i = 0; i < vap->va_namelen; i++) { 547 vap->va_name[i] = unp[i]; 548 ddprintf(("%c", vap->va_name[i])); 549 } 550 ddprintf(("]")); 551 } 552 if (vap->va_flag & NTFS_AF_INRUN) { 553 ddprintf((", nonres.")); 554 vap->va_datalen = rap->a_nr.a_datalen; 555 vap->va_allocated = rap->a_nr.a_allocated; 556 vap->va_vcnstart = rap->a_nr.a_vcnstart; 557 vap->va_vcnend = rap->a_nr.a_vcnend; 558 vap->va_compressalg = rap->a_nr.a_compressalg; 559 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 560 &(vap->va_vruncnt), 561 (caddr_t) rap + rap->a_nr.a_dataoff); 562 } else { 563 vap->va_compressalg = 0; 564 ddprintf((", res.")); 565 vap->va_datalen = rap->a_r.a_datalen; 566 vap->va_allocated = rap->a_r.a_datalen; 567 vap->va_vcnstart = 0; 568 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 569 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 570 M_NTFSRDATA, M_WAITOK); 571 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 572 rap->a_r.a_datalen); 573 } 574 ddprintf((", len: %d", vap->va_datalen)); 575 576 if (error) 577 FREE(vap, M_NTFSNTVATTR); 578 else 579 *rvapp = vap; 580 581 ddprintf(("\n")); 582 583 return (error); 584 } 585 586 /* 587 * Expand run into more utilizable and more memory eating format. 588 */ 589 int 590 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run) 591 { 592 u_int32_t off; 593 u_int32_t sz, i; 594 cn_t *cn; 595 cn_t *cl; 596 u_long cnt; 597 cn_t prev; 598 cn_t tmp; 599 600 off = 0; 601 cnt = 0; 602 i = 0; 603 while (run[off]) { 604 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 605 cnt++; 606 } 607 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 608 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 609 610 off = 0; 611 cnt = 0; 612 prev = 0; 613 while (run[off]) { 614 615 sz = run[off++]; 616 cl[cnt] = 0; 617 618 for (i = 0; i < (sz & 0xF); i++) 619 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 620 621 sz >>= 4; 622 if (run[off + sz - 1] & 0x80) { 623 tmp = ((u_int64_t) - 1) << (sz << 3); 624 for (i = 0; i < sz; i++) 625 tmp |= (u_int64_t) run[off++] << (i << 3); 626 } else { 627 tmp = 0; 628 for (i = 0; i < sz; i++) 629 tmp |= (u_int64_t) run[off++] << (i << 3); 630 } 631 if (tmp) 632 prev = cn[cnt] = prev + tmp; 633 else 634 cn[cnt] = tmp; 635 636 cnt++; 637 } 638 *rcnp = cn; 639 *rclp = cl; 640 *rcntp = cnt; 641 return (0); 642 } 643 644 /* 645 * Compare unicode and ascii string case insens. 646 */ 647 static int 648 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 649 const char *astr, size_t astrlen) 650 { 651 size_t i; 652 int res; 653 654 /* 655 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 656 * symbols not covered by translation table 657 */ 658 for (i = 0; i < ustrlen && i < astrlen; i++) { 659 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) - 660 ((int)NTFS_TOUPPER(NTFS_82U(astr[i]))); 661 if (res) 662 return res; 663 } 664 return (ustrlen - astrlen); 665 } 666 667 /* 668 * Compare unicode and ascii string case sens. 669 */ 670 static int 671 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 672 const char *astr, size_t astrlen) 673 { 674 size_t i; 675 int res; 676 677 for (i = 0; (i < ustrlen) && (i < astrlen); i++) { 678 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]); 679 if (res) 680 return res; 681 } 682 return (ustrlen - astrlen); 683 } 684 685 /* 686 * Search fnode in ntnode, if not found allocate and preinitialize. 687 * 688 * ntnode should be locked on entry. 689 */ 690 int 691 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype, 692 char *attrname, struct fnode **fpp) 693 { 694 struct fnode *fp; 695 696 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n", 697 ip->i_number,attrtype, attrname?attrname:"")); 698 *fpp = NULL; 699 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 700 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 701 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 702 703 if ((attrtype == fp->f_attrtype) && 704 ((!attrname && !fp->f_attrname) || 705 (attrname && fp->f_attrname && 706 !strcmp(attrname,fp->f_attrname)))){ 707 dprintf(("ntfs_fget: found existed: %p\n",fp)); 708 *fpp = fp; 709 } 710 } 711 712 if (*fpp) 713 return (0); 714 715 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK); 716 bzero(fp, sizeof(struct fnode)); 717 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 718 719 fp->f_ip = ip; 720 if (attrname) { 721 fp->f_flag |= FN_AATTRNAME; 722 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 723 strcpy(fp->f_attrname, attrname); 724 } else 725 fp->f_attrname = NULL; 726 fp->f_attrtype = attrtype; 727 728 ntfs_ntref(ip); 729 730 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 731 732 *fpp = fp; 733 734 return (0); 735 } 736 737 /* 738 * Deallocate fnode, remove it from ntnode's fnode list. 739 * 740 * ntnode should be locked. 741 */ 742 void 743 ntfs_frele(struct fnode *fp) 744 { 745 struct ntnode *ip = FTONT(fp); 746 747 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip)); 748 749 dprintf(("ntfs_frele: deallocating fnode\n")); 750 LIST_REMOVE(fp,f_fnlist); 751 if (fp->f_flag & FN_AATTRNAME) 752 FREE(fp->f_attrname, M_TEMP); 753 if (fp->f_dirblbuf) 754 FREE(fp->f_dirblbuf, M_NTFSDIR); 755 FREE(fp, M_NTFSFNODE); 756 ntfs_ntrele(ip); 757 } 758 759 /* 760 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 761 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 762 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 763 */ 764 static int 765 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen, 766 int *attrtype, char **attrname) 767 { 768 const char *sys; 769 size_t syslen, i; 770 struct ntvattrdef *adp; 771 772 if (namelen == 0) 773 return (0); 774 775 if (name[0] == '$') { 776 sys = name; 777 for (syslen = 0; syslen < namelen; syslen++) { 778 if(sys[syslen] == ':') { 779 name++; 780 namelen--; 781 break; 782 } 783 } 784 name += syslen; 785 namelen -= syslen; 786 787 adp = ntmp->ntm_ad; 788 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 789 if (syslen != adp->ad_namelen || 790 strncmp(sys, adp->ad_name, syslen) != 0) 791 continue; 792 793 *attrtype = adp->ad_type; 794 goto out; 795 } 796 return (ENOENT); 797 } else 798 *attrtype = NTFS_A_DATA; 799 800 out: 801 if (namelen) { 802 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 803 memcpy((*attrname), name, namelen); 804 (*attrname)[namelen] = '\0'; 805 } 806 807 return (0); 808 } 809 810 /* 811 * Lookup specifed node for filename, matching cnp, 812 * return fnode filled. 813 */ 814 int 815 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp, 816 struct componentname *cnp, struct vnode **vpp) 817 { 818 struct fnode *fp = VTOF(vp); 819 struct ntnode *ip = FTONT(fp); 820 struct ntvattr *vap; /* Root attribute */ 821 cn_t cn; /* VCN in current attribute */ 822 caddr_t rdbuf; /* Buffer to read directory's blocks */ 823 u_int32_t blsize; 824 u_int32_t rdsize; /* Length of data to read from current block */ 825 struct attr_indexentry *iep; 826 int error, res, anamelen, fnamelen; 827 const char *fname,*aname; 828 u_int32_t aoff; 829 int attrtype = NTFS_A_DATA; 830 char *attrname = NULL; 831 struct fnode *nfp; 832 struct vnode *nvp; 833 enum vtype f_type; 834 835 error = ntfs_ntget(ip); 836 if (error) 837 return (error); 838 839 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 840 if (error || (vap->va_flag & NTFS_AF_INRUN)) 841 return (ENOTDIR); 842 843 blsize = vap->va_a_iroot->ir_size; 844 rdsize = vap->va_datalen; 845 846 /* 847 * Divide file name into: foofilefoofilefoofile[:attrspec] 848 * Store like this: fname:fnamelen [aname:anamelen] 849 */ 850 fname = cnp->cn_nameptr; 851 aname = NULL; 852 anamelen = 0; 853 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 854 if(fname[fnamelen] == ':') { 855 aname = fname + fnamelen + 1; 856 anamelen = cnp->cn_namelen - fnamelen - 1; 857 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 858 fname, fnamelen, aname, anamelen)); 859 break; 860 } 861 862 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 863 864 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 865 866 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 867 0, rdsize, rdbuf, NULL); 868 if (error) 869 goto fail; 870 871 aoff = sizeof(struct attr_indexroot); 872 873 do { 874 iep = (struct attr_indexentry *) (rdbuf + aoff); 875 876 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 877 aoff += iep->reclen, 878 iep = (struct attr_indexentry *) (rdbuf + aoff)) 879 { 880 ddprintf(("scan: %d, %d\n", 881 (u_int32_t) iep->ie_number, 882 (u_int32_t) iep->ie_fnametype)); 883 884 /* check the name - the case-insensitible check 885 * has to come first, to break from this for loop 886 * if needed, so we can dive correctly */ 887 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 888 fname, fnamelen); 889 if (res > 0) break; 890 if (res < 0) continue; 891 892 if (iep->ie_fnametype == 0 || 893 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 894 { 895 res = NTFS_UASTRCMP(iep->ie_fname, 896 iep->ie_fnamelen, fname, fnamelen); 897 if (res != 0) continue; 898 } 899 900 if (aname) { 901 error = ntfs_ntlookupattr(ntmp, 902 aname, anamelen, 903 &attrtype, &attrname); 904 if (error) 905 goto fail; 906 } 907 908 /* Check if we've found ourself */ 909 if ((iep->ie_number == ip->i_number) && 910 (attrtype == fp->f_attrtype) && 911 ((!attrname && !fp->f_attrname) || 912 (attrname && fp->f_attrname && 913 !strcmp(attrname, fp->f_attrname)))) 914 { 915 vref(vp); 916 *vpp = vp; 917 error = 0; 918 goto fail; 919 } 920 921 /* vget node, but don't load it */ 922 error = ntfs_vgetex(ntmp->ntm_mountp, 923 iep->ie_number, attrtype, attrname, 924 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 925 curthread, &nvp); 926 927 /* free the buffer returned by ntfs_ntlookupattr() */ 928 if (attrname) { 929 FREE(attrname, M_TEMP); 930 attrname = NULL; 931 } 932 933 if (error) 934 goto fail; 935 936 nfp = VTOF(nvp); 937 938 if (nfp->f_flag & FN_VALID) { 939 *vpp = nvp; 940 goto fail; 941 } 942 943 nfp->f_fflag = iep->ie_fflag; 944 nfp->f_pnumber = iep->ie_fpnumber; 945 nfp->f_times = iep->ie_ftimes; 946 947 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 948 (nfp->f_attrtype == NTFS_A_DATA) && 949 (nfp->f_attrname == NULL)) 950 f_type = VDIR; 951 else 952 f_type = VREG; 953 954 nvp->v_type = f_type; 955 956 if ((nfp->f_attrtype == NTFS_A_DATA) && 957 (nfp->f_attrname == NULL)) 958 { 959 /* Opening default attribute */ 960 nfp->f_size = iep->ie_fsize; 961 nfp->f_allocated = iep->ie_fallocated; 962 nfp->f_flag |= FN_PRELOADED; 963 } else { 964 error = ntfs_filesize(ntmp, nfp, 965 &nfp->f_size, &nfp->f_allocated); 966 if (error) { 967 vput(nvp); 968 goto fail; 969 } 970 } 971 nfp->f_flag &= ~FN_VALID; 972 973 /* 974 * Normal files use the buffer cache 975 */ 976 if (nvp->v_type == VREG) 977 vinitvmio(nvp, nfp->f_size); 978 *vpp = nvp; 979 goto fail; 980 } 981 982 /* Dive if possible */ 983 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 984 dprintf(("ntfs_ntlookupfile: diving\n")); 985 986 cn = *(cn_t *) (rdbuf + aoff + 987 iep->reclen - sizeof(cn_t)); 988 rdsize = blsize; 989 990 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 991 ntfs_cntob(cn), rdsize, rdbuf, NULL); 992 if (error) 993 goto fail; 994 995 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 996 rdbuf, rdsize); 997 if (error) 998 goto fail; 999 1000 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1001 0x18); 1002 } else { 1003 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1004 error = ENOENT; 1005 break; 1006 } 1007 } while (1); 1008 1009 dprintf(("finish\n")); 1010 1011 fail: 1012 if (attrname) FREE(attrname, M_TEMP); 1013 ntfs_ntvattrrele(vap); 1014 ntfs_ntput(ip); 1015 FREE(rdbuf, M_TEMP); 1016 return (error); 1017 } 1018 1019 /* 1020 * Check if name type is permitted to show. 1021 */ 1022 int 1023 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep) 1024 { 1025 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1026 return 1; 1027 1028 switch (iep->ie_fnametype) { 1029 case 2: 1030 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1031 return 0; 1032 case 0: case 1: case 3: 1033 return 1; 1034 default: 1035 kprintf("ntfs_isnamepermitted: " \ 1036 "WARNING! Unknown file name type: %d\n", 1037 iep->ie_fnametype); 1038 break; 1039 } 1040 return 0; 1041 } 1042 1043 /* 1044 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1045 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1046 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1047 * fnode, so we can skip toward record number num almost immediatly. 1048 * Anyway this is rather slow routine. The problem is that we don't know 1049 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1050 */ 1051 int 1052 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp, 1053 u_int32_t num, struct attr_indexentry **riepp) 1054 { 1055 struct ntnode *ip = FTONT(fp); 1056 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1057 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1058 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1059 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1060 u_char *bmp = NULL; /* Bitmap */ 1061 u_int32_t blsize; /* Index allocation size (2048) */ 1062 u_int32_t rdsize; /* Length of data to read */ 1063 u_int32_t attrnum; /* Current attribute type */ 1064 u_int32_t cpbl = 1; /* Clusters per directory block */ 1065 u_int32_t blnum; 1066 struct attr_indexentry *iep; 1067 int error = ENOENT; 1068 u_int32_t aoff, cnum; 1069 1070 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num)); 1071 error = ntfs_ntget(ip); 1072 if (error) 1073 return (error); 1074 1075 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1076 if (error) 1077 return (ENOTDIR); 1078 1079 if (fp->f_dirblbuf == NULL) { 1080 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1081 MALLOC(fp->f_dirblbuf, caddr_t, 1082 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1083 } 1084 1085 blsize = fp->f_dirblsz; 1086 rdbuf = fp->f_dirblbuf; 1087 1088 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1089 1090 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1091 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1092 0, &bmvap); 1093 if (error) { 1094 error = ENOTDIR; 1095 goto fail; 1096 } 1097 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1098 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1099 bmvap->va_datalen, bmp, NULL); 1100 if (error) 1101 goto fail; 1102 1103 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1104 0, &iavap); 1105 if (error) { 1106 error = ENOTDIR; 1107 goto fail; 1108 } 1109 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1110 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1111 iavap->va_datalen, cpbl)); 1112 } else { 1113 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1114 iavap = bmvap = NULL; 1115 bmp = NULL; 1116 } 1117 1118 /* Try use previous values */ 1119 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1120 attrnum = fp->f_lastdattr; 1121 aoff = fp->f_lastdoff; 1122 blnum = fp->f_lastdblnum; 1123 cnum = fp->f_lastdnum; 1124 } else { 1125 attrnum = NTFS_A_INDXROOT; 1126 aoff = sizeof(struct attr_indexroot); 1127 blnum = 0; 1128 cnum = 0; 1129 } 1130 1131 do { 1132 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1133 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1134 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1135 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1136 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1137 if (error) 1138 goto fail; 1139 1140 if (attrnum == NTFS_A_INDX) { 1141 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1142 rdbuf, rdsize); 1143 if (error) 1144 goto fail; 1145 } 1146 if (aoff == 0) 1147 aoff = (attrnum == NTFS_A_INDX) ? 1148 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1149 sizeof(struct attr_indexroot); 1150 1151 iep = (struct attr_indexentry *) (rdbuf + aoff); 1152 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1153 aoff += iep->reclen, 1154 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1155 { 1156 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1157 1158 if (cnum >= num) { 1159 fp->f_lastdnum = cnum; 1160 fp->f_lastdoff = aoff; 1161 fp->f_lastdblnum = blnum; 1162 fp->f_lastdattr = attrnum; 1163 1164 *riepp = iep; 1165 1166 error = 0; 1167 goto fail; 1168 } 1169 cnum++; 1170 } 1171 1172 if (iavap) { 1173 if (attrnum == NTFS_A_INDXROOT) 1174 blnum = 0; 1175 else 1176 blnum++; 1177 1178 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1179 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1180 break; 1181 blnum++; 1182 } 1183 1184 attrnum = NTFS_A_INDX; 1185 aoff = 0; 1186 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1187 break; 1188 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1189 } 1190 } while (iavap); 1191 1192 *riepp = NULL; 1193 fp->f_lastdnum = 0; 1194 1195 fail: 1196 if (vap) 1197 ntfs_ntvattrrele(vap); 1198 if (bmvap) 1199 ntfs_ntvattrrele(bmvap); 1200 if (iavap) 1201 ntfs_ntvattrrele(iavap); 1202 if (bmp) 1203 FREE(bmp, M_TEMP); 1204 ntfs_ntput(ip); 1205 return (error); 1206 } 1207 1208 /* 1209 * Convert NTFS times that are in 100 ns units and begins from 1210 * 1601 Jan 1 into unix times. 1211 */ 1212 struct timespec 1213 ntfs_nttimetounix(u_int64_t nt) 1214 { 1215 struct timespec t; 1216 1217 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1218 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1219 t.tv_sec = nt / (1000 * 1000 * 10) - 1220 369LL * 365LL * 24LL * 60LL * 60LL - 1221 89LL * 1LL * 24LL * 60LL * 60LL; 1222 return (t); 1223 } 1224 1225 /* 1226 * Get file times from NTFS_A_NAME attribute. 1227 */ 1228 int 1229 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm) 1230 { 1231 struct ntvattr *vap; 1232 int error; 1233 1234 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number)); 1235 1236 error = ntfs_ntget(ip); 1237 if (error) 1238 return (error); 1239 1240 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1241 if (error) { 1242 ntfs_ntput(ip); 1243 return (error); 1244 } 1245 *tm = vap->va_a_name->n_times; 1246 ntfs_ntvattrrele(vap); 1247 ntfs_ntput(ip); 1248 1249 return (0); 1250 } 1251 1252 /* 1253 * Get file sizes from corresponding attribute. 1254 * 1255 * ntnode under fnode should be locked. 1256 */ 1257 int 1258 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size, 1259 u_int64_t *bytes) 1260 { 1261 struct ntvattr *vap; 1262 struct ntnode *ip = FTONT(fp); 1263 u_int64_t sz, bn; 1264 int error; 1265 1266 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number)); 1267 1268 error = ntfs_ntvattrget(ntmp, ip, 1269 fp->f_attrtype, fp->f_attrname, 0, &vap); 1270 if (error) 1271 return (error); 1272 1273 bn = vap->va_allocated; 1274 sz = vap->va_datalen; 1275 1276 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1277 (u_int32_t) sz, (u_int32_t) bn)); 1278 1279 if (size) 1280 *size = sz; 1281 if (bytes) 1282 *bytes = bn; 1283 1284 ntfs_ntvattrrele(vap); 1285 1286 return (0); 1287 } 1288 1289 /* 1290 * This is one of write routine. 1291 */ 1292 int 1293 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1294 u_int32_t attrnum, char *attrname, off_t roff, 1295 size_t rsize, void *rdata, size_t *initp, 1296 struct uio *uio) 1297 { 1298 size_t init; 1299 int error = 0; 1300 off_t off = roff, left = rsize, towrite; 1301 caddr_t data = rdata; 1302 struct ntvattr *vap; 1303 *initp = 0; 1304 1305 while (left) { 1306 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1307 ntfs_btocn(off), &vap); 1308 if (error) 1309 return (error); 1310 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1311 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1312 (u_int32_t) off, (u_int32_t) towrite, 1313 (u_int32_t) vap->va_vcnstart, 1314 (u_int32_t) vap->va_vcnend)); 1315 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1316 off - ntfs_cntob(vap->va_vcnstart), 1317 towrite, data, &init, uio); 1318 if (error) { 1319 kprintf("ntfs_writeattr_plain: " \ 1320 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1321 (u_int32_t) off, (u_int32_t) towrite); 1322 kprintf("ntfs_writeattr_plain: attrib: %d - %d\n", 1323 (u_int32_t) vap->va_vcnstart, 1324 (u_int32_t) vap->va_vcnend); 1325 ntfs_ntvattrrele(vap); 1326 break; 1327 } 1328 ntfs_ntvattrrele(vap); 1329 left -= towrite; 1330 off += towrite; 1331 data = data + towrite; 1332 *initp += init; 1333 } 1334 1335 return (error); 1336 } 1337 1338 /* 1339 * This is one of write routine. 1340 * 1341 * ntnode should be locked. 1342 */ 1343 int 1344 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1345 struct ntvattr *vap, off_t roff, size_t rsize, 1346 void *rdata, size_t *initp, struct uio *uio) 1347 { 1348 int error = 0; 1349 int off; 1350 int cnt; 1351 cn_t ccn, ccl, cn, left, cl; 1352 caddr_t data = rdata; 1353 struct buf *bp; 1354 size_t tocopy; 1355 1356 *initp = 0; 1357 1358 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1359 kprintf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1360 return ENOTTY; 1361 } 1362 1363 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1364 vap->va_vruncnt)); 1365 1366 off = roff; 1367 left = rsize; 1368 ccl = 0; 1369 ccn = 0; 1370 cnt = 0; 1371 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1372 ccn = vap->va_vruncn[cnt]; 1373 ccl = vap->va_vruncl[cnt]; 1374 1375 ddprintf(("ntfs_writentvattr_plain: " \ 1376 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1377 (u_int32_t) left, (u_int32_t) ccn, \ 1378 (u_int32_t) ccl, (u_int32_t) off)); 1379 1380 if (ntfs_cntob(ccl) < off) { 1381 off -= ntfs_cntob(ccl); 1382 cnt++; 1383 continue; 1384 } 1385 if (!ccn && ip->i_number != NTFS_BOOTINO) 1386 continue; /* XXX */ 1387 1388 ccl -= ntfs_btocn(off); 1389 cn = ccn + ntfs_btocn(off); 1390 off = ntfs_btocnoff(off); 1391 1392 while (left && ccl) { 1393 #if defined(__DragonFly__) 1394 tocopy = min(left, 1395 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1396 #else 1397 /* under NetBSD, bread() can read 1398 * maximum one block worth of data */ 1399 tocopy = min(left, ntmp->ntm_bps - off); 1400 #endif 1401 cl = ntfs_btocl(tocopy + off); 1402 ddprintf(("ntfs_writentvattr_plain: write: " \ 1403 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1404 (u_int32_t) cn, (u_int32_t) cl, 1405 (u_int32_t) off, (u_int32_t) tocopy, 1406 (u_int32_t) left)); 1407 if (off == 0 && tocopy == ntfs_cntob(cl) && 1408 uio->uio_segflg != UIO_NOCOPY) { 1409 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn), 1410 ntfs_cntob(cl), 0, 0); 1411 clrbuf(bp); 1412 } else { 1413 error = bread(ntmp->ntm_devvp, 1414 ntfs_cntodoff(cn), 1415 ntfs_cntob(cl), &bp); 1416 if (error) { 1417 brelse(bp); 1418 return (error); 1419 } 1420 } 1421 if (uio) 1422 uiomove(bp->b_data + off, tocopy, uio); 1423 else 1424 memcpy(bp->b_data + off, data, tocopy); 1425 bawrite(bp); 1426 data = data + tocopy; 1427 *initp += tocopy; 1428 off = 0; 1429 left -= tocopy; 1430 cn += cl; 1431 ccl -= cl; 1432 } 1433 } 1434 1435 if (left) { 1436 kprintf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1437 error = EINVAL; 1438 } 1439 1440 return (error); 1441 } 1442 1443 /* 1444 * This is one of read routines. 1445 * 1446 * ntnode should be locked. 1447 */ 1448 int 1449 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1450 struct ntvattr *vap, off_t roff, size_t rsize, 1451 void *rdata, size_t *initp, struct uio *uio) 1452 { 1453 int error = 0; 1454 int off; 1455 1456 *initp = 0; 1457 if (vap->va_flag & NTFS_AF_INRUN) { 1458 int cnt; 1459 cn_t ccn, ccl, cn, left, cl; 1460 caddr_t data = rdata; 1461 struct buf *bp; 1462 size_t tocopy; 1463 1464 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1465 vap->va_vruncnt)); 1466 1467 off = roff; 1468 left = rsize; 1469 ccl = 0; 1470 ccn = 0; 1471 cnt = 0; 1472 while (left && (cnt < vap->va_vruncnt)) { 1473 ccn = vap->va_vruncn[cnt]; 1474 ccl = vap->va_vruncl[cnt]; 1475 1476 ddprintf(("ntfs_readntvattr_plain: " \ 1477 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1478 (u_int32_t) left, (u_int32_t) ccn, \ 1479 (u_int32_t) ccl, (u_int32_t) off)); 1480 1481 if (ntfs_cntob(ccl) < off) { 1482 off -= ntfs_cntob(ccl); 1483 cnt++; 1484 continue; 1485 } 1486 if (ccn || ip->i_number == NTFS_BOOTINO) { 1487 ccl -= ntfs_btocn(off); 1488 cn = ccn + ntfs_btocn(off); 1489 off = ntfs_btocnoff(off); 1490 1491 while (left && ccl) { 1492 #if defined(__DragonFly__) 1493 tocopy = min(left, 1494 min(ntfs_cntob(ccl) - off, 1495 MAXBSIZE - off)); 1496 #else 1497 /* under NetBSD, bread() can read 1498 * maximum one block worth of data */ 1499 tocopy = min(left, 1500 ntmp->ntm_bps - off); 1501 #endif 1502 cl = ntfs_btocl(tocopy + off); 1503 ddprintf(("ntfs_readntvattr_plain: " \ 1504 "read: cn: 0x%x cl: %d, " \ 1505 "off: %d len: %d, left: %d\n", 1506 (u_int32_t) cn, 1507 (u_int32_t) cl, 1508 (u_int32_t) off, 1509 (u_int32_t) tocopy, 1510 (u_int32_t) left)); 1511 error = bread(ntmp->ntm_devvp, 1512 ntfs_cntodoff(cn), 1513 ntfs_cntob(cl), 1514 &bp); 1515 if (error) { 1516 brelse(bp); 1517 return (error); 1518 } 1519 if (uio) { 1520 uiomove(bp->b_data + off, 1521 tocopy, uio); 1522 } else { 1523 memcpy(data, bp->b_data + off, 1524 tocopy); 1525 } 1526 brelse(bp); 1527 data = data + tocopy; 1528 *initp += tocopy; 1529 off = 0; 1530 left -= tocopy; 1531 cn += cl; 1532 ccl -= cl; 1533 } 1534 } else { 1535 tocopy = min(left, ntfs_cntob(ccl) - off); 1536 ddprintf(("ntfs_readntvattr_plain: " 1537 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1538 " len: %d, left: %d\n", 1539 (u_int32_t) ccn, (u_int32_t) ccl, 1540 (u_int32_t) off, (u_int32_t) tocopy, 1541 (u_int32_t) left)); 1542 left -= tocopy; 1543 off = 0; 1544 if (uio) { 1545 size_t remains = tocopy; 1546 for(; remains; remains++) 1547 uiomove("", 1, uio); 1548 } else 1549 bzero(data, tocopy); 1550 data = data + tocopy; 1551 } 1552 cnt++; 1553 } 1554 if (left) { 1555 kprintf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1556 error = E2BIG; 1557 } 1558 } else { 1559 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1560 if (uio) 1561 uiomove(vap->va_datap + roff, rsize, uio); 1562 else 1563 memcpy(rdata, vap->va_datap + roff, rsize); 1564 *initp += rsize; 1565 } 1566 1567 return (error); 1568 } 1569 1570 /* 1571 * This is one of read routines. 1572 */ 1573 int 1574 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1575 u_int32_t attrnum, char *attrname, off_t roff, 1576 size_t rsize, void *rdata, size_t * initp, 1577 struct uio *uio) 1578 { 1579 size_t init; 1580 int error = 0; 1581 off_t off = roff, left = rsize, toread; 1582 caddr_t data = rdata; 1583 struct ntvattr *vap; 1584 *initp = 0; 1585 1586 while (left) { 1587 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1588 ntfs_btocn(off), &vap); 1589 if (error) 1590 return (error); 1591 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1592 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1593 (u_int32_t) off, (u_int32_t) toread, 1594 (u_int32_t) vap->va_vcnstart, 1595 (u_int32_t) vap->va_vcnend)); 1596 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1597 off - ntfs_cntob(vap->va_vcnstart), 1598 toread, data, &init, uio); 1599 if (error) { 1600 kprintf("ntfs_readattr_plain: " \ 1601 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1602 (u_int32_t) off, (u_int32_t) toread); 1603 kprintf("ntfs_readattr_plain: attrib: %d - %d\n", 1604 (u_int32_t) vap->va_vcnstart, 1605 (u_int32_t) vap->va_vcnend); 1606 ntfs_ntvattrrele(vap); 1607 break; 1608 } 1609 ntfs_ntvattrrele(vap); 1610 left -= toread; 1611 off += toread; 1612 data = data + toread; 1613 *initp += init; 1614 } 1615 1616 return (error); 1617 } 1618 1619 /* 1620 * This is one of read routines. 1621 */ 1622 int 1623 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum, 1624 char *attrname, off_t roff, size_t rsize, void *rdata, 1625 struct uio *uio) 1626 { 1627 int error = 0; 1628 struct ntvattr *vap; 1629 size_t init; 1630 1631 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n", 1632 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1633 1634 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1635 if (error) 1636 return (error); 1637 1638 if ((roff > vap->va_datalen) || 1639 (roff + rsize > vap->va_datalen)) { 1640 ddprintf(("ntfs_readattr: offset too big\n")); 1641 ntfs_ntvattrrele(vap); 1642 return (E2BIG); 1643 } 1644 if (vap->va_compression && vap->va_compressalg) { 1645 u_int8_t *cup; 1646 u_int8_t *uup; 1647 off_t off = roff, left = rsize, tocopy; 1648 caddr_t data = rdata; 1649 cn_t cn; 1650 1651 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1652 vap->va_compressalg)); 1653 1654 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1655 M_NTFSDECOMP, M_WAITOK); 1656 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1657 M_NTFSDECOMP, M_WAITOK); 1658 1659 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1660 off = roff - ntfs_cntob(cn); 1661 1662 while (left) { 1663 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1664 attrname, ntfs_cntob(cn), 1665 ntfs_cntob(NTFS_COMPUNIT_CL), 1666 cup, &init, NULL); 1667 if (error) 1668 break; 1669 1670 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1671 1672 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1673 if (uio) 1674 uiomove(cup + off, tocopy, uio); 1675 else 1676 memcpy(data, cup + off, tocopy); 1677 } else if (init == 0) { 1678 if (uio) { 1679 size_t remains = tocopy; 1680 for(; remains; remains--) 1681 uiomove("", 1, uio); 1682 } 1683 else 1684 bzero(data, tocopy); 1685 } else { 1686 error = ntfs_uncompunit(ntmp, uup, cup); 1687 if (error) 1688 break; 1689 if (uio) 1690 uiomove(uup + off, tocopy, uio); 1691 else 1692 memcpy(data, uup + off, tocopy); 1693 } 1694 1695 left -= tocopy; 1696 data = data + tocopy; 1697 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1698 cn += NTFS_COMPUNIT_CL; 1699 } 1700 1701 FREE(uup, M_NTFSDECOMP); 1702 FREE(cup, M_NTFSDECOMP); 1703 } else 1704 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1705 roff, rsize, rdata, &init, uio); 1706 ntfs_ntvattrrele(vap); 1707 return (error); 1708 } 1709 1710 #if UNUSED_CODE 1711 int 1712 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off) 1713 { 1714 u_int8_t sz; 1715 int i; 1716 1717 if (NULL == run) { 1718 kprintf("ntfs_parsetun: run == NULL\n"); 1719 return (EINVAL); 1720 } 1721 sz = run[(*off)++]; 1722 if (0 == sz) { 1723 kprintf("ntfs_parserun: trying to go out of run\n"); 1724 return (E2BIG); 1725 } 1726 *cl = 0; 1727 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1728 kprintf("ntfs_parserun: " \ 1729 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1730 sz, len, *off); 1731 return (EINVAL); 1732 } 1733 for (i = 0; i < (sz & 0xF); i++) 1734 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1735 1736 sz >>= 4; 1737 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1738 kprintf("ntfs_parserun: " \ 1739 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1740 sz, len, *off); 1741 return (EINVAL); 1742 } 1743 for (i = 0; i < (sz & 0xF); i++) 1744 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1745 1746 return (0); 1747 } 1748 #endif 1749 1750 /* 1751 * Process fixup routine on given buffer. 1752 */ 1753 int 1754 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf, 1755 size_t len) 1756 { 1757 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1758 int i; 1759 u_int16_t fixup; 1760 u_int16_t *fxp; 1761 u_int16_t *cfxp; 1762 1763 if (fhp->fh_magic != magic) { 1764 kprintf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1765 fhp->fh_magic, magic); 1766 return (EINVAL); 1767 } 1768 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1769 kprintf("ntfs_procfixups: " \ 1770 "bad fixups number: %d for %ld bytes block\n", 1771 fhp->fh_fnum, (long)len); /* XXX kprintf kludge */ 1772 return (EINVAL); 1773 } 1774 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1775 kprintf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1776 return (EINVAL); 1777 } 1778 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1779 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1780 fixup = *fxp++; 1781 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1782 if (*cfxp != fixup) { 1783 kprintf("ntfs_procfixups: fixup %d doesn't match\n", i); 1784 return (EINVAL); 1785 } 1786 *cfxp = *fxp; 1787 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps); 1788 } 1789 return (0); 1790 } 1791 1792 #if UNUSED_CODE 1793 int 1794 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len, 1795 cn_t vcn) 1796 { 1797 cn_t ccn = 0; 1798 cn_t ccl = 0; 1799 u_long off = 0; 1800 int error = 0; 1801 1802 #if NTFS_DEBUG 1803 int i; 1804 kprintf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1805 run, len, (u_long) vcn); 1806 kprintf("ntfs_runtocn: run: "); 1807 for (i = 0; i < len; i++) 1808 kprintf("0x%02x ", run[i]); 1809 kprintf("\n"); 1810 #endif 1811 1812 if (NULL == run) { 1813 kprintf("ntfs_runtocn: run == NULL\n"); 1814 return (EINVAL); 1815 } 1816 do { 1817 if (run[off] == 0) { 1818 kprintf("ntfs_runtocn: vcn too big\n"); 1819 return (E2BIG); 1820 } 1821 vcn -= ccl; 1822 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1823 if (error) { 1824 kprintf("ntfs_runtocn: ntfs_parserun failed\n"); 1825 return (error); 1826 } 1827 } while (ccl <= vcn); 1828 *cn = ccn + vcn; 1829 return (0); 1830 } 1831 #endif 1832 1833 /* 1834 * this initializes toupper table & dependant variables to be ready for 1835 * later work 1836 */ 1837 void 1838 ntfs_toupper_init(void) 1839 { 1840 ntfs_toupper_tab = (wchar *) NULL; 1841 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0); 1842 ntfs_toupper_usecount = 0; 1843 } 1844 1845 /* 1846 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1847 * otherwise read the data from the filesystem we are currently mounting 1848 */ 1849 int 1850 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp) 1851 { 1852 int error = 0; 1853 struct vnode *vp; 1854 1855 /* get exclusive access */ 1856 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE); 1857 1858 /* only read the translation data from a file if it hasn't been 1859 * read already */ 1860 if (ntfs_toupper_tab) 1861 goto out; 1862 1863 /* 1864 * Read in Unicode lowercase -> uppercase translation file. 1865 * XXX for now, just the first 256 entries are used anyway, 1866 * so don't bother reading more 1867 */ 1868 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1869 M_NTFSRDATA, M_WAITOK); 1870 1871 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1872 goto out; 1873 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1874 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1875 vput(vp); 1876 1877 out: 1878 ntfs_toupper_usecount++; 1879 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE); 1880 return (error); 1881 } 1882 1883 /* 1884 * lower the use count and if it reaches zero, free the memory 1885 * tied by toupper table 1886 */ 1887 void 1888 ntfs_toupper_unuse(void) 1889 { 1890 /* get exclusive access */ 1891 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE); 1892 1893 ntfs_toupper_usecount--; 1894 if (ntfs_toupper_usecount == 0) { 1895 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1896 ntfs_toupper_tab = NULL; 1897 } 1898 #ifdef DIAGNOSTIC 1899 else if (ntfs_toupper_usecount < 0) { 1900 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1901 ntfs_toupper_usecount); 1902 } 1903 #endif 1904 1905 /* release the lock */ 1906 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE); 1907 } 1908 1909 int 1910 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w) 1911 { 1912 char ** u28; 1913 int i, j, h, l; 1914 1915 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 1916 1917 for (i=0; i<256; i++) { 1918 h = (u2w[i] >> 8) & 0xFF; 1919 l = (u2w[i]) &0xFF; 1920 1921 if (u28[h] == NULL) { 1922 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 1923 for (j=0; j<256; j++) 1924 u28[h][j] = '_'; 1925 } 1926 1927 u28[h][l] = i & 0xFF; 1928 } 1929 1930 ntmp->ntm_u28 = u28; 1931 1932 return (0); 1933 } 1934 1935 int 1936 ntfs_u28_uninit(struct ntfsmount *ntmp) 1937 { 1938 char ** u28; 1939 int i; 1940 1941 if (ntmp->ntm_u28 == NULL) 1942 return (0); 1943 1944 u28 = ntmp->ntm_u28; 1945 1946 for (i=0; i<256; i++) 1947 if (u28[i] != NULL) 1948 FREE(u28[i], M_TEMP); 1949 1950 FREE(u28, M_TEMP); 1951 1952 return (0); 1953 } 1954 1955 int 1956 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w) 1957 { 1958 wchar * _82u; 1959 int i; 1960 1961 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 1962 1963 if (u2w == NULL) { 1964 for (i=0; i<256; i++) 1965 _82u[i] = i; 1966 } else { 1967 for (i=0; i<128; i++) 1968 _82u[i] = i; 1969 for (i=0; i<128; i++) 1970 _82u[i+128] = u2w[i]; 1971 } 1972 1973 ntmp->ntm_82u = _82u; 1974 1975 return (0); 1976 } 1977 1978 int 1979 ntfs_82u_uninit(struct ntfsmount *ntmp) 1980 { 1981 FREE(ntmp->ntm_82u, M_TEMP); 1982 return (0); 1983 } 1984 1985 /* 1986 * maps the Unicode char to 8bit equivalent 1987 * XXX currently only gets lower 8bit from the Unicode char 1988 * and substitutes a '_' for it if the result would be '\0'; 1989 * something better has to be definitely though out 1990 */ 1991 char 1992 ntfs_u28(struct ntfsmount *ntmp, wchar wc) 1993 { 1994 char * p; 1995 1996 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 1997 if (p == NULL) 1998 return ('_'); 1999 return (p[wc&0xFF]); 2000 } 2001 2002