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 1.27 2008/01/05 14:02:41 swildner 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 | M_ZERO); 384 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 385 386 /* Generic initialization */ 387 ip->i_devvp = ntmp->ntm_devvp; 388 ip->i_dev = ntmp->ntm_dev; 389 ip->i_number = ino; 390 ip->i_mp = ntmp; 391 392 LIST_INIT(&ip->i_fnlist); 393 vref(ip->i_devvp); 394 395 /* init lock and lock the newborn ntnode */ 396 lockinit(&ip->i_lock, "ntnode", 0, LK_EXCLUSIVE); 397 spin_init(&ip->i_interlock); 398 ntfs_ntget(ip); 399 400 ntfs_nthashins(ip); 401 402 LOCKMGR(&ntfs_hashlock, LK_RELEASE); 403 404 *ipp = ip; 405 406 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 407 ino, ip, ip->i_usecount)); 408 409 return (0); 410 } 411 412 /* 413 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 414 * deallocate ntnode. 415 * 416 * ntnode should be locked on entry, and unlocked on return. 417 */ 418 void 419 ntfs_ntput(struct ntnode *ip) 420 { 421 struct ntvattr *vap; 422 423 dprintf(("ntfs_ntput: rele ntnode %"PRId64": %p, usecount: %d\n", 424 ip->i_number, ip, ip->i_usecount)); 425 426 spin_lock_wr(&ip->i_interlock); 427 ip->i_usecount--; 428 429 #ifdef DIAGNOSTIC 430 if (ip->i_usecount < 0) { 431 spin_unlock_wr(&ip->i_interlock); 432 panic("ntfs_ntput: ino: %"PRId64" usecount: %d \n", 433 ip->i_number,ip->i_usecount); 434 } 435 #endif 436 437 if (ip->i_usecount > 0) { 438 spin_unlock_wr(&ip->i_interlock); 439 LOCKMGR(&ip->i_lock, LK_RELEASE); 440 return; 441 } 442 443 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number)); 444 445 if (ip->i_fnlist.lh_first) { 446 spin_unlock_wr(&ip->i_interlock); 447 panic("ntfs_ntput: ntnode has fnodes\n"); 448 } 449 450 /* 451 * XXX this is a bit iffy because we are making high level calls 452 * while holding a spinlock. 453 */ 454 ntfs_nthashrem(ip); 455 456 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 457 LIST_REMOVE(vap,va_list); 458 ntfs_freentvattr(vap); 459 } 460 spin_unlock_wr(&ip->i_interlock); 461 vrele(ip->i_devvp); 462 FREE(ip, M_NTFSNTNODE); 463 } 464 465 /* 466 * increment usecount of ntnode 467 */ 468 void 469 ntfs_ntref(struct ntnode *ip) 470 { 471 ip->i_usecount++; 472 473 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n", 474 ip->i_number, ip->i_usecount)); 475 476 } 477 478 /* 479 * Decrement usecount of ntnode. 480 */ 481 void 482 ntfs_ntrele(struct ntnode *ip) 483 { 484 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n", 485 ip->i_number, ip, ip->i_usecount)); 486 487 spin_lock_wr(&ip->i_interlock); 488 ip->i_usecount--; 489 490 if (ip->i_usecount < 0) { 491 spin_unlock_wr(&ip->i_interlock); 492 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d \n", 493 ip->i_number,ip->i_usecount); 494 } 495 spin_unlock_wr(&ip->i_interlock); 496 } 497 498 /* 499 * Deallocate all memory allocated for ntvattr 500 */ 501 void 502 ntfs_freentvattr(struct ntvattr *vap) 503 { 504 if (vap->va_flag & NTFS_AF_INRUN) { 505 if (vap->va_vruncn) 506 FREE(vap->va_vruncn, M_NTFSRUN); 507 if (vap->va_vruncl) 508 FREE(vap->va_vruncl, M_NTFSRUN); 509 } else { 510 if (vap->va_datap) 511 FREE(vap->va_datap, M_NTFSRDATA); 512 } 513 FREE(vap, M_NTFSNTVATTR); 514 } 515 516 /* 517 * Convert disk image of attribute into ntvattr structure, 518 * runs are expanded also. 519 */ 520 int 521 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp, 522 struct attr *rap) 523 { 524 int error, i; 525 struct ntvattr *vap; 526 527 error = 0; 528 *rvapp = NULL; 529 530 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 531 M_NTFSNTVATTR, M_WAITOK | M_ZERO); 532 vap->va_ip = NULL; 533 vap->va_flag = rap->a_hdr.a_flag; 534 vap->va_type = rap->a_hdr.a_type; 535 vap->va_compression = rap->a_hdr.a_compression; 536 vap->va_index = rap->a_hdr.a_index; 537 538 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 539 540 vap->va_namelen = rap->a_hdr.a_namelen; 541 if (rap->a_hdr.a_namelen) { 542 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 543 ddprintf((", name:[")); 544 for (i = 0; i < vap->va_namelen; i++) { 545 vap->va_name[i] = unp[i]; 546 ddprintf(("%c", vap->va_name[i])); 547 } 548 ddprintf(("]")); 549 } 550 if (vap->va_flag & NTFS_AF_INRUN) { 551 ddprintf((", nonres.")); 552 vap->va_datalen = rap->a_nr.a_datalen; 553 vap->va_allocated = rap->a_nr.a_allocated; 554 vap->va_vcnstart = rap->a_nr.a_vcnstart; 555 vap->va_vcnend = rap->a_nr.a_vcnend; 556 vap->va_compressalg = rap->a_nr.a_compressalg; 557 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 558 &(vap->va_vruncnt), 559 (caddr_t) rap + rap->a_nr.a_dataoff); 560 } else { 561 vap->va_compressalg = 0; 562 ddprintf((", res.")); 563 vap->va_datalen = rap->a_r.a_datalen; 564 vap->va_allocated = rap->a_r.a_datalen; 565 vap->va_vcnstart = 0; 566 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 567 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 568 M_NTFSRDATA, M_WAITOK); 569 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 570 rap->a_r.a_datalen); 571 } 572 ddprintf((", len: %d", vap->va_datalen)); 573 574 if (error) 575 FREE(vap, M_NTFSNTVATTR); 576 else 577 *rvapp = vap; 578 579 ddprintf(("\n")); 580 581 return (error); 582 } 583 584 /* 585 * Expand run into more utilizable and more memory eating format. 586 */ 587 int 588 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run) 589 { 590 u_int32_t off; 591 u_int32_t sz, i; 592 cn_t *cn; 593 cn_t *cl; 594 u_long cnt; 595 cn_t prev; 596 cn_t tmp; 597 598 off = 0; 599 cnt = 0; 600 i = 0; 601 while (run[off]) { 602 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 603 cnt++; 604 } 605 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 606 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 607 608 off = 0; 609 cnt = 0; 610 prev = 0; 611 while (run[off]) { 612 613 sz = run[off++]; 614 cl[cnt] = 0; 615 616 for (i = 0; i < (sz & 0xF); i++) 617 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 618 619 sz >>= 4; 620 if (run[off + sz - 1] & 0x80) { 621 tmp = ((u_int64_t) - 1) << (sz << 3); 622 for (i = 0; i < sz; i++) 623 tmp |= (u_int64_t) run[off++] << (i << 3); 624 } else { 625 tmp = 0; 626 for (i = 0; i < sz; i++) 627 tmp |= (u_int64_t) run[off++] << (i << 3); 628 } 629 if (tmp) 630 prev = cn[cnt] = prev + tmp; 631 else 632 cn[cnt] = tmp; 633 634 cnt++; 635 } 636 *rcnp = cn; 637 *rclp = cl; 638 *rcntp = cnt; 639 return (0); 640 } 641 642 /* 643 * Compare unicode and ascii string case insens. 644 */ 645 static int 646 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 647 const char *astr, size_t astrlen) 648 { 649 size_t i; 650 int res; 651 652 /* 653 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 654 * symbols not covered by translation table 655 */ 656 for (i = 0; i < ustrlen && i < astrlen; i++) { 657 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) - 658 ((int)NTFS_TOUPPER(NTFS_82U(astr[i]))); 659 if (res) 660 return res; 661 } 662 return (ustrlen - astrlen); 663 } 664 665 /* 666 * Compare unicode and ascii string case sens. 667 */ 668 static int 669 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 670 const char *astr, size_t astrlen) 671 { 672 size_t i; 673 int res; 674 675 for (i = 0; (i < ustrlen) && (i < astrlen); i++) { 676 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]); 677 if (res) 678 return res; 679 } 680 return (ustrlen - astrlen); 681 } 682 683 /* 684 * Search fnode in ntnode, if not found allocate and preinitialize. 685 * 686 * ntnode should be locked on entry. 687 */ 688 int 689 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype, 690 char *attrname, struct fnode **fpp) 691 { 692 struct fnode *fp; 693 694 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n", 695 ip->i_number,attrtype, attrname?attrname:"")); 696 *fpp = NULL; 697 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 698 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 699 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 700 701 if ((attrtype == fp->f_attrtype) && 702 ((!attrname && !fp->f_attrname) || 703 (attrname && fp->f_attrname && 704 !strcmp(attrname,fp->f_attrname)))){ 705 dprintf(("ntfs_fget: found existed: %p\n",fp)); 706 *fpp = fp; 707 } 708 } 709 710 if (*fpp) 711 return (0); 712 713 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, 714 M_WAITOK | M_ZERO); 715 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 716 717 fp->f_ip = ip; 718 if (attrname) { 719 fp->f_flag |= FN_AATTRNAME; 720 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 721 strcpy(fp->f_attrname, attrname); 722 } else 723 fp->f_attrname = NULL; 724 fp->f_attrtype = attrtype; 725 726 ntfs_ntref(ip); 727 728 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 729 730 *fpp = fp; 731 732 return (0); 733 } 734 735 /* 736 * Deallocate fnode, remove it from ntnode's fnode list. 737 * 738 * ntnode should be locked. 739 */ 740 void 741 ntfs_frele(struct fnode *fp) 742 { 743 struct ntnode *ip = FTONT(fp); 744 745 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip)); 746 747 dprintf(("ntfs_frele: deallocating fnode\n")); 748 LIST_REMOVE(fp,f_fnlist); 749 if (fp->f_flag & FN_AATTRNAME) 750 FREE(fp->f_attrname, M_TEMP); 751 if (fp->f_dirblbuf) 752 FREE(fp->f_dirblbuf, M_NTFSDIR); 753 FREE(fp, M_NTFSFNODE); 754 ntfs_ntrele(ip); 755 } 756 757 /* 758 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 759 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 760 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 761 */ 762 static int 763 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen, 764 int *attrtype, char **attrname) 765 { 766 const char *sys; 767 size_t syslen, i; 768 struct ntvattrdef *adp; 769 770 if (namelen == 0) 771 return (0); 772 773 if (name[0] == '$') { 774 sys = name; 775 for (syslen = 0; syslen < namelen; syslen++) { 776 if(sys[syslen] == ':') { 777 name++; 778 namelen--; 779 break; 780 } 781 } 782 name += syslen; 783 namelen -= syslen; 784 785 adp = ntmp->ntm_ad; 786 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 787 if (syslen != adp->ad_namelen || 788 strncmp(sys, adp->ad_name, syslen) != 0) 789 continue; 790 791 *attrtype = adp->ad_type; 792 goto out; 793 } 794 return (ENOENT); 795 } else 796 *attrtype = NTFS_A_DATA; 797 798 out: 799 if (namelen) { 800 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 801 memcpy((*attrname), name, namelen); 802 (*attrname)[namelen] = '\0'; 803 } 804 805 return (0); 806 } 807 808 /* 809 * Lookup specifed node for filename, matching cnp, 810 * return fnode filled. 811 */ 812 int 813 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp, 814 struct componentname *cnp, struct vnode **vpp) 815 { 816 struct fnode *fp = VTOF(vp); 817 struct ntnode *ip = FTONT(fp); 818 struct ntvattr *vap; /* Root attribute */ 819 cn_t cn; /* VCN in current attribute */ 820 caddr_t rdbuf; /* Buffer to read directory's blocks */ 821 u_int32_t blsize; 822 u_int32_t rdsize; /* Length of data to read from current block */ 823 struct attr_indexentry *iep; 824 int error, res, anamelen, fnamelen; 825 const char *fname,*aname; 826 u_int32_t aoff; 827 int attrtype = NTFS_A_DATA; 828 char *attrname = NULL; 829 struct fnode *nfp; 830 struct vnode *nvp; 831 enum vtype f_type; 832 833 error = ntfs_ntget(ip); 834 if (error) 835 return (error); 836 837 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 838 if (error || (vap->va_flag & NTFS_AF_INRUN)) 839 return (ENOTDIR); 840 841 blsize = vap->va_a_iroot->ir_size; 842 rdsize = vap->va_datalen; 843 844 /* 845 * Divide file name into: foofilefoofilefoofile[:attrspec] 846 * Store like this: fname:fnamelen [aname:anamelen] 847 */ 848 fname = cnp->cn_nameptr; 849 aname = NULL; 850 anamelen = 0; 851 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 852 if(fname[fnamelen] == ':') { 853 aname = fname + fnamelen + 1; 854 anamelen = cnp->cn_namelen - fnamelen - 1; 855 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 856 fname, fnamelen, aname, anamelen)); 857 break; 858 } 859 860 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 861 862 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 863 864 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 865 0, rdsize, rdbuf, NULL); 866 if (error) 867 goto fail; 868 869 aoff = sizeof(struct attr_indexroot); 870 871 do { 872 iep = (struct attr_indexentry *) (rdbuf + aoff); 873 874 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 875 aoff += iep->reclen, 876 iep = (struct attr_indexentry *) (rdbuf + aoff)) 877 { 878 ddprintf(("scan: %d, %d\n", 879 (u_int32_t) iep->ie_number, 880 (u_int32_t) iep->ie_fnametype)); 881 882 /* check the name - the case-insensitible check 883 * has to come first, to break from this for loop 884 * if needed, so we can dive correctly */ 885 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 886 fname, fnamelen); 887 if (res > 0) break; 888 if (res < 0) continue; 889 890 if (iep->ie_fnametype == 0 || 891 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 892 { 893 res = NTFS_UASTRCMP(iep->ie_fname, 894 iep->ie_fnamelen, fname, fnamelen); 895 if (res != 0) continue; 896 } 897 898 if (aname) { 899 error = ntfs_ntlookupattr(ntmp, 900 aname, anamelen, 901 &attrtype, &attrname); 902 if (error) 903 goto fail; 904 } 905 906 /* Check if we've found ourself */ 907 if ((iep->ie_number == ip->i_number) && 908 (attrtype == fp->f_attrtype) && 909 ((!attrname && !fp->f_attrname) || 910 (attrname && fp->f_attrname && 911 !strcmp(attrname, fp->f_attrname)))) 912 { 913 vref(vp); 914 *vpp = vp; 915 error = 0; 916 goto fail; 917 } 918 919 /* vget node, but don't load it */ 920 error = ntfs_vgetex(ntmp->ntm_mountp, 921 iep->ie_number, attrtype, attrname, 922 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 923 curthread, &nvp); 924 925 /* free the buffer returned by ntfs_ntlookupattr() */ 926 if (attrname) { 927 FREE(attrname, M_TEMP); 928 attrname = NULL; 929 } 930 931 if (error) 932 goto fail; 933 934 nfp = VTOF(nvp); 935 936 if (nfp->f_flag & FN_VALID) { 937 *vpp = nvp; 938 goto fail; 939 } 940 941 nfp->f_fflag = iep->ie_fflag; 942 nfp->f_pnumber = iep->ie_fpnumber; 943 nfp->f_times = iep->ie_ftimes; 944 945 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 946 (nfp->f_attrtype == NTFS_A_DATA) && 947 (nfp->f_attrname == NULL)) 948 f_type = VDIR; 949 else 950 f_type = VREG; 951 952 nvp->v_type = f_type; 953 954 if ((nfp->f_attrtype == NTFS_A_DATA) && 955 (nfp->f_attrname == NULL)) 956 { 957 /* Opening default attribute */ 958 nfp->f_size = iep->ie_fsize; 959 nfp->f_allocated = iep->ie_fallocated; 960 nfp->f_flag |= FN_PRELOADED; 961 } else { 962 error = ntfs_filesize(ntmp, nfp, 963 &nfp->f_size, &nfp->f_allocated); 964 if (error) { 965 vput(nvp); 966 goto fail; 967 } 968 } 969 nfp->f_flag &= ~FN_VALID; 970 971 /* 972 * Normal files use the buffer cache 973 */ 974 if (nvp->v_type == VREG) 975 vinitvmio(nvp, nfp->f_size); 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 kprintf("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 kprintf("ntfs_writeattr_plain: " \ 1318 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1319 (u_int32_t) off, (u_int32_t) towrite); 1320 kprintf("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 kprintf("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 uio->uio_segflg != UIO_NOCOPY) { 1407 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn), 1408 ntfs_cntob(cl), 0, 0); 1409 clrbuf(bp); 1410 } else { 1411 error = bread(ntmp->ntm_devvp, 1412 ntfs_cntodoff(cn), 1413 ntfs_cntob(cl), &bp); 1414 if (error) { 1415 brelse(bp); 1416 return (error); 1417 } 1418 } 1419 if (uio) 1420 uiomove(bp->b_data + off, tocopy, uio); 1421 else 1422 memcpy(bp->b_data + off, data, tocopy); 1423 bawrite(bp); 1424 data = data + tocopy; 1425 *initp += tocopy; 1426 off = 0; 1427 left -= tocopy; 1428 cn += cl; 1429 ccl -= cl; 1430 } 1431 } 1432 1433 if (left) { 1434 kprintf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1435 error = EINVAL; 1436 } 1437 1438 return (error); 1439 } 1440 1441 /* 1442 * This is one of read routines. 1443 * 1444 * ntnode should be locked. 1445 */ 1446 int 1447 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1448 struct ntvattr *vap, off_t roff, size_t rsize, 1449 void *rdata, size_t *initp, struct uio *uio) 1450 { 1451 int error = 0; 1452 int off; 1453 1454 *initp = 0; 1455 if (vap->va_flag & NTFS_AF_INRUN) { 1456 int cnt; 1457 cn_t ccn, ccl, cn, left, cl; 1458 caddr_t data = rdata; 1459 struct buf *bp; 1460 size_t tocopy; 1461 1462 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1463 vap->va_vruncnt)); 1464 1465 off = roff; 1466 left = rsize; 1467 ccl = 0; 1468 ccn = 0; 1469 cnt = 0; 1470 while (left && (cnt < vap->va_vruncnt)) { 1471 ccn = vap->va_vruncn[cnt]; 1472 ccl = vap->va_vruncl[cnt]; 1473 1474 ddprintf(("ntfs_readntvattr_plain: " \ 1475 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1476 (u_int32_t) left, (u_int32_t) ccn, \ 1477 (u_int32_t) ccl, (u_int32_t) off)); 1478 1479 if (ntfs_cntob(ccl) < off) { 1480 off -= ntfs_cntob(ccl); 1481 cnt++; 1482 continue; 1483 } 1484 if (ccn || ip->i_number == NTFS_BOOTINO) { 1485 ccl -= ntfs_btocn(off); 1486 cn = ccn + ntfs_btocn(off); 1487 off = ntfs_btocnoff(off); 1488 1489 while (left && ccl) { 1490 #if defined(__DragonFly__) 1491 tocopy = min(left, 1492 min(ntfs_cntob(ccl) - off, 1493 MAXBSIZE - off)); 1494 #else 1495 /* under NetBSD, bread() can read 1496 * maximum one block worth of data */ 1497 tocopy = min(left, 1498 ntmp->ntm_bps - off); 1499 #endif 1500 cl = ntfs_btocl(tocopy + off); 1501 ddprintf(("ntfs_readntvattr_plain: " \ 1502 "read: cn: 0x%x cl: %d, " \ 1503 "off: %d len: %d, left: %d\n", 1504 (u_int32_t) cn, 1505 (u_int32_t) cl, 1506 (u_int32_t) off, 1507 (u_int32_t) tocopy, 1508 (u_int32_t) left)); 1509 error = bread(ntmp->ntm_devvp, 1510 ntfs_cntodoff(cn), 1511 ntfs_cntob(cl), 1512 &bp); 1513 if (error) { 1514 brelse(bp); 1515 return (error); 1516 } 1517 if (uio) { 1518 uiomove(bp->b_data + off, 1519 tocopy, uio); 1520 } else { 1521 memcpy(data, bp->b_data + off, 1522 tocopy); 1523 } 1524 brelse(bp); 1525 data = data + tocopy; 1526 *initp += tocopy; 1527 off = 0; 1528 left -= tocopy; 1529 cn += cl; 1530 ccl -= cl; 1531 } 1532 } else { 1533 tocopy = min(left, ntfs_cntob(ccl) - off); 1534 ddprintf(("ntfs_readntvattr_plain: " 1535 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1536 " len: %d, left: %d\n", 1537 (u_int32_t) ccn, (u_int32_t) ccl, 1538 (u_int32_t) off, (u_int32_t) tocopy, 1539 (u_int32_t) left)); 1540 left -= tocopy; 1541 off = 0; 1542 if (uio) { 1543 size_t remains = tocopy; 1544 for(; remains; remains++) 1545 uiomove("", 1, uio); 1546 } else 1547 bzero(data, tocopy); 1548 data = data + tocopy; 1549 } 1550 cnt++; 1551 } 1552 if (left) { 1553 kprintf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1554 error = E2BIG; 1555 } 1556 } else { 1557 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1558 if (uio) 1559 uiomove(vap->va_datap + roff, rsize, uio); 1560 else 1561 memcpy(rdata, vap->va_datap + roff, rsize); 1562 *initp += rsize; 1563 } 1564 1565 return (error); 1566 } 1567 1568 /* 1569 * This is one of read routines. 1570 */ 1571 int 1572 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1573 u_int32_t attrnum, char *attrname, off_t roff, 1574 size_t rsize, void *rdata, size_t * initp, 1575 struct uio *uio) 1576 { 1577 size_t init; 1578 int error = 0; 1579 off_t off = roff, left = rsize, toread; 1580 caddr_t data = rdata; 1581 struct ntvattr *vap; 1582 *initp = 0; 1583 1584 while (left) { 1585 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1586 ntfs_btocn(off), &vap); 1587 if (error) 1588 return (error); 1589 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1590 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1591 (u_int32_t) off, (u_int32_t) toread, 1592 (u_int32_t) vap->va_vcnstart, 1593 (u_int32_t) vap->va_vcnend)); 1594 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1595 off - ntfs_cntob(vap->va_vcnstart), 1596 toread, data, &init, uio); 1597 if (error) { 1598 kprintf("ntfs_readattr_plain: " \ 1599 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1600 (u_int32_t) off, (u_int32_t) toread); 1601 kprintf("ntfs_readattr_plain: attrib: %d - %d\n", 1602 (u_int32_t) vap->va_vcnstart, 1603 (u_int32_t) vap->va_vcnend); 1604 ntfs_ntvattrrele(vap); 1605 break; 1606 } 1607 ntfs_ntvattrrele(vap); 1608 left -= toread; 1609 off += toread; 1610 data = data + toread; 1611 *initp += init; 1612 } 1613 1614 return (error); 1615 } 1616 1617 /* 1618 * This is one of read routines. 1619 */ 1620 int 1621 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum, 1622 char *attrname, off_t roff, size_t rsize, void *rdata, 1623 struct uio *uio) 1624 { 1625 int error = 0; 1626 struct ntvattr *vap; 1627 size_t init; 1628 1629 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n", 1630 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1631 1632 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1633 if (error) 1634 return (error); 1635 1636 if ((roff > vap->va_datalen) || 1637 (roff + rsize > vap->va_datalen)) { 1638 ddprintf(("ntfs_readattr: offset too big\n")); 1639 ntfs_ntvattrrele(vap); 1640 return (E2BIG); 1641 } 1642 if (vap->va_compression && vap->va_compressalg) { 1643 u_int8_t *cup; 1644 u_int8_t *uup; 1645 off_t off = roff, left = rsize, tocopy; 1646 caddr_t data = rdata; 1647 cn_t cn; 1648 1649 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1650 vap->va_compressalg)); 1651 1652 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1653 M_NTFSDECOMP, M_WAITOK); 1654 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1655 M_NTFSDECOMP, M_WAITOK); 1656 1657 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1658 off = roff - ntfs_cntob(cn); 1659 1660 while (left) { 1661 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1662 attrname, ntfs_cntob(cn), 1663 ntfs_cntob(NTFS_COMPUNIT_CL), 1664 cup, &init, NULL); 1665 if (error) 1666 break; 1667 1668 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1669 1670 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1671 if (uio) 1672 uiomove(cup + off, tocopy, uio); 1673 else 1674 memcpy(data, cup + off, tocopy); 1675 } else if (init == 0) { 1676 if (uio) { 1677 size_t remains = tocopy; 1678 for(; remains; remains--) 1679 uiomove("", 1, uio); 1680 } 1681 else 1682 bzero(data, tocopy); 1683 } else { 1684 error = ntfs_uncompunit(ntmp, uup, cup); 1685 if (error) 1686 break; 1687 if (uio) 1688 uiomove(uup + off, tocopy, uio); 1689 else 1690 memcpy(data, uup + off, tocopy); 1691 } 1692 1693 left -= tocopy; 1694 data = data + tocopy; 1695 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1696 cn += NTFS_COMPUNIT_CL; 1697 } 1698 1699 FREE(uup, M_NTFSDECOMP); 1700 FREE(cup, M_NTFSDECOMP); 1701 } else 1702 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1703 roff, rsize, rdata, &init, uio); 1704 ntfs_ntvattrrele(vap); 1705 return (error); 1706 } 1707 1708 #if UNUSED_CODE 1709 int 1710 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off) 1711 { 1712 u_int8_t sz; 1713 int i; 1714 1715 if (NULL == run) { 1716 kprintf("ntfs_parsetun: run == NULL\n"); 1717 return (EINVAL); 1718 } 1719 sz = run[(*off)++]; 1720 if (0 == sz) { 1721 kprintf("ntfs_parserun: trying to go out of run\n"); 1722 return (E2BIG); 1723 } 1724 *cl = 0; 1725 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1726 kprintf("ntfs_parserun: " \ 1727 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1728 sz, len, *off); 1729 return (EINVAL); 1730 } 1731 for (i = 0; i < (sz & 0xF); i++) 1732 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1733 1734 sz >>= 4; 1735 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1736 kprintf("ntfs_parserun: " \ 1737 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1738 sz, len, *off); 1739 return (EINVAL); 1740 } 1741 for (i = 0; i < (sz & 0xF); i++) 1742 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1743 1744 return (0); 1745 } 1746 #endif 1747 1748 /* 1749 * Process fixup routine on given buffer. 1750 */ 1751 int 1752 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf, 1753 size_t len) 1754 { 1755 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1756 int i; 1757 u_int16_t fixup; 1758 u_int16_t *fxp; 1759 u_int16_t *cfxp; 1760 1761 if (fhp->fh_magic != magic) { 1762 kprintf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1763 fhp->fh_magic, magic); 1764 return (EINVAL); 1765 } 1766 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1767 kprintf("ntfs_procfixups: " \ 1768 "bad fixups number: %d for %ld bytes block\n", 1769 fhp->fh_fnum, (long)len); /* XXX kprintf kludge */ 1770 return (EINVAL); 1771 } 1772 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1773 kprintf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1774 return (EINVAL); 1775 } 1776 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1777 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1778 fixup = *fxp++; 1779 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1780 if (*cfxp != fixup) { 1781 kprintf("ntfs_procfixups: fixup %d doesn't match\n", i); 1782 return (EINVAL); 1783 } 1784 *cfxp = *fxp; 1785 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps); 1786 } 1787 return (0); 1788 } 1789 1790 #if UNUSED_CODE 1791 int 1792 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len, 1793 cn_t vcn) 1794 { 1795 cn_t ccn = 0; 1796 cn_t ccl = 0; 1797 u_long off = 0; 1798 int error = 0; 1799 1800 #if NTFS_DEBUG 1801 int i; 1802 kprintf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1803 run, len, (u_long) vcn); 1804 kprintf("ntfs_runtocn: run: "); 1805 for (i = 0; i < len; i++) 1806 kprintf("0x%02x ", run[i]); 1807 kprintf("\n"); 1808 #endif 1809 1810 if (NULL == run) { 1811 kprintf("ntfs_runtocn: run == NULL\n"); 1812 return (EINVAL); 1813 } 1814 do { 1815 if (run[off] == 0) { 1816 kprintf("ntfs_runtocn: vcn too big\n"); 1817 return (E2BIG); 1818 } 1819 vcn -= ccl; 1820 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1821 if (error) { 1822 kprintf("ntfs_runtocn: ntfs_parserun failed\n"); 1823 return (error); 1824 } 1825 } while (ccl <= vcn); 1826 *cn = ccn + vcn; 1827 return (0); 1828 } 1829 #endif 1830 1831 /* 1832 * this initializes toupper table & dependant variables to be ready for 1833 * later work 1834 */ 1835 void 1836 ntfs_toupper_init(void) 1837 { 1838 ntfs_toupper_tab = (wchar *) NULL; 1839 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0); 1840 ntfs_toupper_usecount = 0; 1841 } 1842 1843 /* 1844 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1845 * otherwise read the data from the filesystem we are currently mounting 1846 */ 1847 int 1848 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp) 1849 { 1850 int error = 0; 1851 struct vnode *vp; 1852 1853 /* get exclusive access */ 1854 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE); 1855 1856 /* only read the translation data from a file if it hasn't been 1857 * read already */ 1858 if (ntfs_toupper_tab) 1859 goto out; 1860 1861 /* 1862 * Read in Unicode lowercase -> uppercase translation file. 1863 * XXX for now, just the first 256 entries are used anyway, 1864 * so don't bother reading more 1865 */ 1866 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1867 M_NTFSRDATA, M_WAITOK); 1868 1869 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp))) 1870 goto out; 1871 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1872 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1873 vput(vp); 1874 1875 out: 1876 ntfs_toupper_usecount++; 1877 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE); 1878 return (error); 1879 } 1880 1881 /* 1882 * lower the use count and if it reaches zero, free the memory 1883 * tied by toupper table 1884 */ 1885 void 1886 ntfs_toupper_unuse(void) 1887 { 1888 /* get exclusive access */ 1889 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE); 1890 1891 ntfs_toupper_usecount--; 1892 if (ntfs_toupper_usecount == 0) { 1893 FREE(ntfs_toupper_tab, M_NTFSRDATA); 1894 ntfs_toupper_tab = NULL; 1895 } 1896 #ifdef DIAGNOSTIC 1897 else if (ntfs_toupper_usecount < 0) { 1898 panic("ntfs_toupper_unuse(): use count negative: %d\n", 1899 ntfs_toupper_usecount); 1900 } 1901 #endif 1902 1903 /* release the lock */ 1904 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE); 1905 } 1906 1907 int 1908 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w) 1909 { 1910 char ** u28; 1911 int i, j, h, l; 1912 1913 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 1914 1915 for (i=0; i<256; i++) { 1916 h = (u2w[i] >> 8) & 0xFF; 1917 l = (u2w[i]) &0xFF; 1918 1919 if (u28[h] == NULL) { 1920 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 1921 for (j=0; j<256; j++) 1922 u28[h][j] = '_'; 1923 } 1924 1925 u28[h][l] = i & 0xFF; 1926 } 1927 1928 ntmp->ntm_u28 = u28; 1929 1930 return (0); 1931 } 1932 1933 int 1934 ntfs_u28_uninit(struct ntfsmount *ntmp) 1935 { 1936 char ** u28; 1937 int i; 1938 1939 if (ntmp->ntm_u28 == NULL) 1940 return (0); 1941 1942 u28 = ntmp->ntm_u28; 1943 1944 for (i=0; i<256; i++) 1945 if (u28[i] != NULL) 1946 FREE(u28[i], M_TEMP); 1947 1948 FREE(u28, M_TEMP); 1949 1950 return (0); 1951 } 1952 1953 int 1954 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w) 1955 { 1956 wchar * _82u; 1957 int i; 1958 1959 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 1960 1961 if (u2w == NULL) { 1962 for (i=0; i<256; i++) 1963 _82u[i] = i; 1964 } else { 1965 for (i=0; i<128; i++) 1966 _82u[i] = i; 1967 for (i=0; i<128; i++) 1968 _82u[i+128] = u2w[i]; 1969 } 1970 1971 ntmp->ntm_82u = _82u; 1972 1973 return (0); 1974 } 1975 1976 int 1977 ntfs_82u_uninit(struct ntfsmount *ntmp) 1978 { 1979 FREE(ntmp->ntm_82u, M_TEMP); 1980 return (0); 1981 } 1982 1983 /* 1984 * maps the Unicode char to 8bit equivalent 1985 * XXX currently only gets lower 8bit from the Unicode char 1986 * and substitutes a '_' for it if the result would be '\0'; 1987 * something better has to be definitely though out 1988 */ 1989 char 1990 ntfs_u28(struct ntfsmount *ntmp, wchar wc) 1991 { 1992 char * p; 1993 1994 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 1995 if (p == NULL) 1996 return ('_'); 1997 return (p[wc&0xFF]); 1998 } 1999 2000