ntfs_subr.c revision 145938
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: head/sys/fs/ntfs/ntfs_subr.c 145938 2005-05-06 00:06:06Z robert $ 29 */ 30 31#include <sys/param.h> 32#include <sys/types.h> 33#include <sys/systm.h> 34#include <sys/namei.h> 35#include <sys/kernel.h> 36#include <sys/vnode.h> 37#include <sys/mount.h> 38#include <sys/bio.h> 39#include <sys/buf.h> 40#include <sys/file.h> 41#include <sys/malloc.h> 42#include <sys/lock.h> 43#include <sys/iconv.h> 44 45/* #define NTFS_DEBUG 1 */ 46#include <fs/ntfs/ntfs.h> 47#include <fs/ntfs/ntfsmount.h> 48#include <fs/ntfs/ntfs_inode.h> 49#include <fs/ntfs/ntfs_vfsops.h> 50#include <fs/ntfs/ntfs_subr.h> 51#include <fs/ntfs/ntfs_compr.h> 52#include <fs/ntfs/ntfs_ihash.h> 53 54MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information"); 55MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data"); 56MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage"); 57MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary"); 58 59static int ntfs_ntlookupattr(struct ntfsmount *, const char *, int, int *, char **); 60static int ntfs_findvattr(struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t); 61static int ntfs_uastricmp(struct ntfsmount *, const wchar *, size_t, const char *, size_t); 62static int ntfs_uastrcmp(struct ntfsmount *, const wchar *, size_t, const char *, size_t); 63 64/* table for mapping Unicode chars into uppercase; it's filled upon first 65 * ntfs mount, freed upon last ntfs umount */ 66static wchar *ntfs_toupper_tab; 67#define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)]) 68static struct lock ntfs_toupper_lock; 69static signed int ntfs_toupper_usecount; 70 71struct iconv_functions *ntfs_iconv = NULL; 72 73/* support macro for ntfs_ntvattrget() */ 74#define NTFS_AALPCMP(aalp,type,name,namelen) ( \ 75 (aalp->al_type == type) && (aalp->al_namelen == namelen) && \ 76 !NTFS_UASTRCMP(aalp->al_name,aalp->al_namelen,name,namelen) ) 77 78/* 79 * 80 */ 81int 82ntfs_ntvattrrele(vap) 83 struct ntvattr * vap; 84{ 85 dprintf(("ntfs_ntvattrrele: ino: %d, type: 0x%x\n", 86 vap->va_ip->i_number, vap->va_type)); 87 88 ntfs_ntrele(vap->va_ip); 89 90 return (0); 91} 92 93/* 94 * find the attribute in the ntnode 95 */ 96static int 97ntfs_findvattr(ntmp, ip, lvapp, vapp, type, name, namelen, vcn) 98 struct ntfsmount *ntmp; 99 struct ntnode *ip; 100 struct ntvattr **lvapp, **vapp; 101 u_int32_t type; 102 const char *name; 103 size_t namelen; 104 cn_t vcn; 105{ 106 int error; 107 struct ntvattr *vap; 108 109 if((ip->i_flag & IN_LOADED) == 0) { 110 dprintf(("ntfs_findvattr: node not loaded, ino: %d\n", 111 ip->i_number)); 112 error = ntfs_loadntnode(ntmp,ip); 113 if (error) { 114 printf("ntfs_findvattr: FAILED TO LOAD INO: %d\n", 115 ip->i_number); 116 return (error); 117 } 118 } 119 120 *lvapp = NULL; 121 *vapp = NULL; 122 LIST_FOREACH(vap, &ip->i_valist, va_list) { 123 ddprintf(("ntfs_findvattr: type: 0x%x, vcn: %d - %d\n", \ 124 vap->va_type, (u_int32_t) vap->va_vcnstart, \ 125 (u_int32_t) vap->va_vcnend)); 126 if ((vap->va_type == type) && 127 (vap->va_vcnstart <= vcn) && (vap->va_vcnend >= vcn) && 128 (vap->va_namelen == namelen) && 129 (strncmp(name, vap->va_name, namelen) == 0)) { 130 *vapp = vap; 131 ntfs_ntref(vap->va_ip); 132 return (0); 133 } 134 if (vap->va_type == NTFS_A_ATTRLIST) 135 *lvapp = vap; 136 } 137 138 return (-1); 139} 140 141/* 142 * Search attribute specifed in ntnode (load ntnode if nessecary). 143 * If not found but ATTR_A_ATTRLIST present, read it in and search throught. 144 * VOP_VGET node needed, and lookup througth it's ntnode (load if nessesary). 145 * 146 * ntnode should be locked 147 */ 148int 149ntfs_ntvattrget( 150 struct ntfsmount * ntmp, 151 struct ntnode * ip, 152 u_int32_t type, 153 const char *name, 154 cn_t vcn, 155 struct ntvattr ** vapp) 156{ 157 struct ntvattr *lvap = NULL; 158 struct attr_attrlist *aalp; 159 struct attr_attrlist *nextaalp; 160 struct vnode *newvp; 161 struct ntnode *newip; 162 caddr_t alpool; 163 size_t namelen, len; 164 int error; 165 166 *vapp = NULL; 167 168 if (name) { 169 dprintf(("ntfs_ntvattrget: " \ 170 "ino: %d, type: 0x%x, name: %s, vcn: %d\n", \ 171 ip->i_number, type, name, (u_int32_t) vcn)); 172 namelen = strlen(name); 173 } else { 174 dprintf(("ntfs_ntvattrget: " \ 175 "ino: %d, type: 0x%x, vcn: %d\n", \ 176 ip->i_number, type, (u_int32_t) vcn)); 177 name = ""; 178 namelen = 0; 179 } 180 181 error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn); 182 if (error >= 0) 183 return (error); 184 185 if (!lvap) { 186 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 187 "ino: %d, type: 0x%x, name: %s, vcn: %d\n", \ 188 ip->i_number, type, name, (u_int32_t) vcn)); 189 return (ENOENT); 190 } 191 /* Scan $ATTRIBUTE_LIST for requested attribute */ 192 len = lvap->va_datalen; 193 MALLOC(alpool, caddr_t, len, M_TEMP, M_WAITOK); 194 error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len, 195 NULL); 196 if (error) 197 goto out; 198 199 aalp = (struct attr_attrlist *) alpool; 200 nextaalp = NULL; 201 202 for(; len > 0; aalp = nextaalp) { 203 dprintf(("ntfs_ntvattrget: " \ 204 "attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \ 205 aalp->al_inumber, aalp->al_type, \ 206 (u_int32_t) aalp->al_vcnstart)); 207 208 if (len > aalp->reclen) { 209 nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *); 210 } else { 211 nextaalp = NULL; 212 } 213 len -= aalp->reclen; 214 215 if (!NTFS_AALPCMP(aalp, type, name, namelen) || 216 (nextaalp && (nextaalp->al_vcnstart <= vcn) && 217 NTFS_AALPCMP(nextaalp, type, name, namelen))) 218 continue; 219 220 dprintf(("ntfs_ntvattrget: attribute in ino: %d\n", 221 aalp->al_inumber)); 222 223 /* this is not a main record, so we can't use just plain 224 vget() */ 225 error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber, 226 NTFS_A_DATA, NULL, LK_EXCLUSIVE, 227 VG_EXT, curthread, &newvp); 228 if (error) { 229 printf("ntfs_ntvattrget: CAN'T VGET INO: %d\n", 230 aalp->al_inumber); 231 goto out; 232 } 233 newip = VTONT(newvp); 234 /* XXX have to lock ntnode */ 235 error = ntfs_findvattr(ntmp, newip, &lvap, vapp, 236 type, name, namelen, vcn); 237 vput(newvp); 238 if (error == 0) 239 goto out; 240 printf("ntfs_ntvattrget: ATTRLIST ERROR.\n"); 241 break; 242 } 243 error = ENOENT; 244 245 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 246 "ino: %d, type: 0x%x, name: %.*s, vcn: %d\n", \ 247 ip->i_number, type, (int) namelen, name, (u_int32_t) vcn)); 248out: 249 FREE(alpool, M_TEMP); 250 return (error); 251} 252 253/* 254 * Read ntnode from disk, make ntvattr list. 255 * 256 * ntnode should be locked 257 */ 258int 259ntfs_loadntnode( 260 struct ntfsmount * ntmp, 261 struct ntnode * ip) 262{ 263 struct filerec *mfrp; 264 daddr_t bn; 265 int error,off; 266 struct attr *ap; 267 struct ntvattr *nvap; 268 269 dprintf(("ntfs_loadntnode: loading ino: %d\n",ip->i_number)); 270 271 MALLOC(mfrp, struct filerec *, ntfs_bntob(ntmp->ntm_bpmftrec), 272 M_TEMP, M_WAITOK); 273 274 if (ip->i_number < NTFS_SYSNODESNUM) { 275 struct buf *bp; 276 277 dprintf(("ntfs_loadntnode: read system node\n")); 278 279 bn = ntfs_cntobn(ntmp->ntm_mftcn) + 280 ntmp->ntm_bpmftrec * ip->i_number; 281 282 error = bread(ntmp->ntm_devvp, 283 bn, ntfs_bntob(ntmp->ntm_bpmftrec), 284 NOCRED, &bp); 285 if (error) { 286 printf("ntfs_loadntnode: BREAD FAILED\n"); 287 brelse(bp); 288 goto out; 289 } 290 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec)); 291 bqrelse(bp); 292 } else { 293 struct vnode *vp; 294 295 vp = ntmp->ntm_sysvn[NTFS_MFTINO]; 296 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 297 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec), 298 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL); 299 if (error) { 300 printf("ntfs_loadntnode: ntfs_readattr failed\n"); 301 goto out; 302 } 303 } 304 305 /* Check if magic and fixups are correct */ 306 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp, 307 ntfs_bntob(ntmp->ntm_bpmftrec)); 308 if (error) { 309 printf("ntfs_loadntnode: BAD MFT RECORD %d\n", 310 (u_int32_t) ip->i_number); 311 goto out; 312 } 313 314 dprintf(("ntfs_loadntnode: load attrs for ino: %d\n",ip->i_number)); 315 off = mfrp->fr_attroff; 316 ap = (struct attr *) ((caddr_t)mfrp + off); 317 318 LIST_INIT(&ip->i_valist); 319 320 while (ap->a_hdr.a_type != -1) { 321 error = ntfs_attrtontvattr(ntmp, &nvap, ap); 322 if (error) 323 break; 324 nvap->va_ip = ip; 325 326 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list); 327 328 off += ap->a_hdr.reclen; 329 ap = (struct attr *) ((caddr_t)mfrp + off); 330 } 331 if (error) { 332 printf("ntfs_loadntnode: failed to load attr ino: %d\n", 333 ip->i_number); 334 goto out; 335 } 336 337 ip->i_mainrec = mfrp->fr_mainrec; 338 ip->i_nlink = mfrp->fr_nlink; 339 ip->i_frflag = mfrp->fr_flags; 340 341 ip->i_flag |= IN_LOADED; 342 343out: 344 FREE(mfrp, M_TEMP); 345 return (error); 346} 347 348/* 349 * Routine locks ntnode and increase usecount, just opposite of 350 * ntfs_ntput(). 351 */ 352int 353ntfs_ntget(ip) 354 struct ntnode *ip; 355{ 356 dprintf(("ntfs_ntget: get ntnode %d: %p, usecount: %d\n", 357 ip->i_number, ip, ip->i_usecount)); 358 359 mtx_lock(&ip->i_interlock); 360 ip->i_usecount++; 361 lockmgr(&ip->i_lock, LK_EXCLUSIVE | LK_INTERLOCK, &ip->i_interlock, 362 NULL); 363 364 return 0; 365} 366 367/* 368 * Routine search ntnode in hash, if found: lock, inc usecount and return. 369 * If not in hash allocate structure for ntnode, prefill it, lock, 370 * inc count and return. 371 * 372 * ntnode returned locked 373 */ 374int 375ntfs_ntlookup( 376 struct ntfsmount * ntmp, 377 ino_t ino, 378 struct ntnode ** ipp) 379{ 380 struct ntnode *ip; 381 382 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 383 384 do { 385 ip = ntfs_nthashlookup(ntmp->ntm_devvp->v_rdev, ino); 386 if (ip != NULL) { 387 ntfs_ntget(ip); 388 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 389 ino, ip, ip->i_usecount)); 390 *ipp = ip; 391 return (0); 392 } 393 } while (lockmgr(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL, 394 NULL)); 395 396 MALLOC(ip, struct ntnode *, sizeof(struct ntnode), M_NTFSNTNODE, 397 M_WAITOK | M_ZERO); 398 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 399 400 /* Generic initialization */ 401 ip->i_devvp = ntmp->ntm_devvp; 402 ip->i_dev = ntmp->ntm_devvp->v_rdev; 403 ip->i_number = ino; 404 ip->i_mp = ntmp; 405 406 LIST_INIT(&ip->i_fnlist); 407 VREF(ip->i_devvp); 408 409 /* init lock and lock the newborn ntnode */ 410 lockinit(&ip->i_lock, PINOD, "ntnode", 0, LK_EXCLUSIVE); 411 mtx_init(&ip->i_interlock, "ntnode interlock", NULL, MTX_DEF); 412 ntfs_ntget(ip); 413 414 ntfs_nthashins(ip); 415 416 lockmgr(&ntfs_hashlock, LK_RELEASE, NULL, NULL); 417 418 *ipp = ip; 419 420 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 421 ino, ip, ip->i_usecount)); 422 423 return (0); 424} 425 426/* 427 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 428 * deallocate ntnode. 429 * 430 * ntnode should be locked on entry, and unlocked on return. 431 */ 432void 433ntfs_ntput(ip) 434 struct ntnode *ip; 435{ 436 struct ntvattr *vap; 437 438 dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n", 439 ip->i_number, ip, ip->i_usecount)); 440 441 mtx_lock(&ip->i_interlock); 442 ip->i_usecount--; 443 444#ifdef DIAGNOSTIC 445 if (ip->i_usecount < 0) { 446 panic("ntfs_ntput: ino: %d usecount: %d \n", 447 ip->i_number,ip->i_usecount); 448 } 449#endif 450 451 if (ip->i_usecount > 0) { 452 lockmgr(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock, 453 NULL); 454 return; 455 } 456 457 dprintf(("ntfs_ntput: deallocating ntnode: %d\n", ip->i_number)); 458 459 if (LIST_FIRST(&ip->i_fnlist)) 460 panic("ntfs_ntput: ntnode has fnodes\n"); 461 462 ntfs_nthashrem(ip); 463 464 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 465 LIST_REMOVE(vap,va_list); 466 ntfs_freentvattr(vap); 467 } 468 mtx_unlock(&ip->i_interlock); 469 mtx_destroy(&ip->i_interlock); 470 lockdestroy(&ip->i_lock); 471 vrele(ip->i_devvp); 472 FREE(ip, M_NTFSNTNODE); 473} 474 475/* 476 * increment usecount of ntnode 477 */ 478void 479ntfs_ntref(ip) 480 struct ntnode *ip; 481{ 482 mtx_lock(&ip->i_interlock); 483 ip->i_usecount++; 484 mtx_unlock(&ip->i_interlock); 485 486 dprintf(("ntfs_ntref: ino %d, usecount: %d\n", 487 ip->i_number, ip->i_usecount)); 488 489} 490 491/* 492 * Decrement usecount of ntnode. 493 */ 494void 495ntfs_ntrele(ip) 496 struct ntnode *ip; 497{ 498 dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n", 499 ip->i_number, ip, ip->i_usecount)); 500 501 mtx_lock(&ip->i_interlock); 502 ip->i_usecount--; 503 504 if (ip->i_usecount < 0) 505 panic("ntfs_ntrele: ino: %d usecount: %d \n", 506 ip->i_number,ip->i_usecount); 507 mtx_unlock(&ip->i_interlock); 508} 509 510/* 511 * Deallocate all memory allocated for ntvattr 512 */ 513void 514ntfs_freentvattr(vap) 515 struct ntvattr * vap; 516{ 517 if (vap->va_flag & NTFS_AF_INRUN) { 518 if (vap->va_vruncn) 519 FREE(vap->va_vruncn, M_NTFSRUN); 520 if (vap->va_vruncl) 521 FREE(vap->va_vruncl, M_NTFSRUN); 522 } else { 523 if (vap->va_datap) 524 FREE(vap->va_datap, M_NTFSRDATA); 525 } 526 FREE(vap, M_NTFSNTVATTR); 527} 528 529/* 530 * Convert disk image of attribute into ntvattr structure, 531 * runs are expanded also. 532 */ 533int 534ntfs_attrtontvattr( 535 struct ntfsmount * ntmp, 536 struct ntvattr ** rvapp, 537 struct attr * rap) 538{ 539 int error, i; 540 struct ntvattr *vap; 541 542 error = 0; 543 *rvapp = NULL; 544 545 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr), 546 M_NTFSNTVATTR, M_WAITOK | M_ZERO); 547 vap->va_ip = NULL; 548 vap->va_flag = rap->a_hdr.a_flag; 549 vap->va_type = rap->a_hdr.a_type; 550 vap->va_compression = rap->a_hdr.a_compression; 551 vap->va_index = rap->a_hdr.a_index; 552 553 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 554 555 vap->va_namelen = rap->a_hdr.a_namelen; 556 if (rap->a_hdr.a_namelen) { 557 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 558 ddprintf((", name:[")); 559 for (i = 0; i < vap->va_namelen; i++) { 560 vap->va_name[i] = unp[i]; 561 ddprintf(("%c", vap->va_name[i])); 562 } 563 ddprintf(("]")); 564 } 565 if (vap->va_flag & NTFS_AF_INRUN) { 566 ddprintf((", nonres.")); 567 vap->va_datalen = rap->a_nr.a_datalen; 568 vap->va_allocated = rap->a_nr.a_allocated; 569 vap->va_vcnstart = rap->a_nr.a_vcnstart; 570 vap->va_vcnend = rap->a_nr.a_vcnend; 571 vap->va_compressalg = rap->a_nr.a_compressalg; 572 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 573 &(vap->va_vruncnt), 574 (caddr_t) rap + rap->a_nr.a_dataoff); 575 } else { 576 vap->va_compressalg = 0; 577 ddprintf((", res.")); 578 vap->va_datalen = rap->a_r.a_datalen; 579 vap->va_allocated = rap->a_r.a_datalen; 580 vap->va_vcnstart = 0; 581 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 582 MALLOC(vap->va_datap, caddr_t, vap->va_datalen, 583 M_NTFSRDATA, M_WAITOK); 584 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 585 rap->a_r.a_datalen); 586 } 587 ddprintf((", len: %d", vap->va_datalen)); 588 589 if (error) 590 FREE(vap, M_NTFSNTVATTR); 591 else 592 *rvapp = vap; 593 594 ddprintf(("\n")); 595 596 return (error); 597} 598 599/* 600 * Expand run into more utilizable and more memory eating format. 601 */ 602int 603ntfs_runtovrun( 604 cn_t ** rcnp, 605 cn_t ** rclp, 606 u_long * rcntp, 607 u_int8_t * run) 608{ 609 u_int32_t off; 610 u_int32_t sz, i; 611 cn_t *cn; 612 cn_t *cl; 613 u_long cnt; 614 cn_t prev; 615 cn_t tmp; 616 617 off = 0; 618 cnt = 0; 619 i = 0; 620 while (run[off]) { 621 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 622 cnt++; 623 } 624 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 625 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 626 627 off = 0; 628 cnt = 0; 629 prev = 0; 630 while (run[off]) { 631 632 sz = run[off++]; 633 cl[cnt] = 0; 634 635 for (i = 0; i < (sz & 0xF); i++) 636 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 637 638 sz >>= 4; 639 if (run[off + sz - 1] & 0x80) { 640 tmp = ((u_int64_t) - 1) << (sz << 3); 641 for (i = 0; i < sz; i++) 642 tmp |= (u_int64_t) run[off++] << (i << 3); 643 } else { 644 tmp = 0; 645 for (i = 0; i < sz; i++) 646 tmp |= (u_int64_t) run[off++] << (i << 3); 647 } 648 if (tmp) 649 prev = cn[cnt] = prev + tmp; 650 else 651 cn[cnt] = tmp; 652 653 cnt++; 654 } 655 *rcnp = cn; 656 *rclp = cl; 657 *rcntp = cnt; 658 return (0); 659} 660 661/* 662 * Compare unicode and ascii string case insens. 663 */ 664static int 665ntfs_uastricmp(ntmp, ustr, ustrlen, astr, astrlen) 666 struct ntfsmount *ntmp; 667 const wchar *ustr; 668 size_t ustrlen; 669 const char *astr; 670 size_t astrlen; 671{ 672 int len; 673 size_t i, j, mbstrlen = astrlen; 674 int res; 675 wchar wc; 676 677 if (ntmp->ntm_ic_l2u) { 678 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++, j++) { 679 if (j < astrlen -1) { 680 wc = (wchar)astr[j]<<8 | (astr[j+1]&0xFF); 681 len = 2; 682 } else { 683 wc = (wchar)astr[j]<<8 & 0xFF00; 684 len = 1; 685 } 686 res = ((int) NTFS_TOUPPER(ustr[i])) - 687 ((int)NTFS_TOUPPER(NTFS_82U(wc, &len))); 688 j += len - 1; 689 mbstrlen -= len - 1; 690 691 if (res) 692 return res; 693 } 694 } else { 695 /* 696 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 697 * symbols not covered by translation table 698 */ 699 for (i = 0; i < ustrlen && i < astrlen; i++) { 700 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 701 ((int)NTFS_TOUPPER(NTFS_82U((wchar)astr[i], &len))); 702 if (res) 703 return res; 704 } 705 } 706 return (ustrlen - mbstrlen); 707} 708 709/* 710 * Compare unicode and ascii string case sens. 711 */ 712static int 713ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 714 struct ntfsmount *ntmp; 715 const wchar *ustr; 716 size_t ustrlen; 717 const char *astr; 718 size_t astrlen; 719{ 720 char u, l; 721 size_t i, j, mbstrlen = astrlen; 722 int res; 723 wchar wc; 724 725 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, j++) { 726 res = 0; 727 wc = NTFS_U28(ustr[i]); 728 u = (char)(wc>>8); 729 l = (char)wc; 730 if (u != '\0' && j < astrlen -1) { 731 res = (int) (u - astr[j++]); 732 mbstrlen--; 733 } 734 res = (res<<8) + (int) (l - astr[j]); 735 if (res) 736 return res; 737 } 738 return (ustrlen - mbstrlen); 739} 740 741/* 742 * Search fnode in ntnode, if not found allocate and preinitialize. 743 * 744 * ntnode should be locked on entry. 745 */ 746int 747ntfs_fget( 748 struct ntfsmount *ntmp, 749 struct ntnode *ip, 750 int attrtype, 751 char *attrname, 752 struct fnode **fpp) 753{ 754 struct fnode *fp; 755 756 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 757 ip->i_number,attrtype, attrname?attrname:"")); 758 *fpp = NULL; 759 LIST_FOREACH(fp, &ip->i_fnlist, f_fnlist){ 760 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 761 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 762 763 if ((attrtype == fp->f_attrtype) && 764 ((!attrname && !fp->f_attrname) || 765 (attrname && fp->f_attrname && 766 !strcmp(attrname,fp->f_attrname)))){ 767 dprintf(("ntfs_fget: found existed: %p\n",fp)); 768 *fpp = fp; 769 } 770 } 771 772 if (*fpp) 773 return (0); 774 775 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, 776 M_WAITOK | M_ZERO); 777 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 778 779 fp->f_ip = ip; 780 if (attrname) { 781 fp->f_flag |= FN_AATTRNAME; 782 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK); 783 strcpy(fp->f_attrname, attrname); 784 } else 785 fp->f_attrname = NULL; 786 fp->f_attrtype = attrtype; 787 788 ntfs_ntref(ip); 789 790 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 791 792 *fpp = fp; 793 794 return (0); 795} 796 797/* 798 * Deallocate fnode, remove it from ntnode's fnode list. 799 * 800 * ntnode should be locked. 801 */ 802void 803ntfs_frele( 804 struct fnode *fp) 805{ 806 struct ntnode *ip = FTONT(fp); 807 808 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 809 810 dprintf(("ntfs_frele: deallocating fnode\n")); 811 LIST_REMOVE(fp,f_fnlist); 812 if (fp->f_flag & FN_AATTRNAME) 813 FREE(fp->f_attrname, M_TEMP); 814 if (fp->f_dirblbuf) 815 FREE(fp->f_dirblbuf, M_NTFSDIR); 816 FREE(fp, M_NTFSFNODE); 817 ntfs_ntrele(ip); 818} 819 820/* 821 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 822 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 823 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 824 */ 825static int 826ntfs_ntlookupattr( 827 struct ntfsmount * ntmp, 828 const char * name, 829 int namelen, 830 int *attrtype, 831 char **attrname) 832{ 833 const char *sys; 834 size_t syslen, i; 835 struct ntvattrdef *adp; 836 837 if (namelen == 0) 838 return (0); 839 840 if (name[0] == '$') { 841 sys = name; 842 for (syslen = 0; syslen < namelen; syslen++) { 843 if(sys[syslen] == ':') { 844 name++; 845 namelen--; 846 break; 847 } 848 } 849 name += syslen; 850 namelen -= syslen; 851 852 adp = ntmp->ntm_ad; 853 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 854 if (syslen != adp->ad_namelen || 855 strncmp(sys, adp->ad_name, syslen) != 0) 856 continue; 857 858 *attrtype = adp->ad_type; 859 goto out; 860 } 861 return (ENOENT); 862 } else 863 *attrtype = NTFS_A_DATA; 864 865 out: 866 if (namelen) { 867 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK); 868 memcpy((*attrname), name, namelen); 869 (*attrname)[namelen] = '\0'; 870 } 871 872 return (0); 873} 874 875/* 876 * Lookup specifed node for filename, matching cnp, 877 * return fnode filled. 878 */ 879int 880ntfs_ntlookupfile( 881 struct ntfsmount * ntmp, 882 struct vnode * vp, 883 struct componentname * cnp, 884 struct vnode ** vpp) 885{ 886 struct fnode *fp = VTOF(vp); 887 struct ntnode *ip = FTONT(fp); 888 struct ntvattr *vap; /* Root attribute */ 889 cn_t cn; /* VCN in current attribute */ 890 caddr_t rdbuf; /* Buffer to read directory's blocks */ 891 u_int32_t blsize; 892 u_int32_t rdsize; /* Length of data to read from current block */ 893 struct attr_indexentry *iep; 894 int error, res, anamelen, fnamelen; 895 const char *fname,*aname; 896 u_int32_t aoff; 897 int attrtype = NTFS_A_DATA; 898 char *attrname = NULL; 899 struct fnode *nfp; 900 struct vnode *nvp; 901 enum vtype f_type; 902 903 error = ntfs_ntget(ip); 904 if (error) 905 return (error); 906 907 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 908 if (error || (vap->va_flag & NTFS_AF_INRUN)) 909 return (ENOTDIR); 910 911 blsize = vap->va_a_iroot->ir_size; 912 rdsize = vap->va_datalen; 913 914 /* 915 * Divide file name into: foofilefoofilefoofile[:attrspec] 916 * Store like this: fname:fnamelen [aname:anamelen] 917 */ 918 fname = cnp->cn_nameptr; 919 aname = NULL; 920 anamelen = 0; 921 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 922 if(fname[fnamelen] == ':') { 923 aname = fname + fnamelen + 1; 924 anamelen = cnp->cn_namelen - fnamelen - 1; 925 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 926 fname, fnamelen, aname, anamelen)); 927 break; 928 } 929 930 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 931 932 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK); 933 934 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 935 0, rdsize, rdbuf, NULL); 936 if (error) 937 goto fail; 938 939 aoff = sizeof(struct attr_indexroot); 940 941 do { 942 iep = (struct attr_indexentry *) (rdbuf + aoff); 943 944 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 945 aoff += iep->reclen, 946 iep = (struct attr_indexentry *) (rdbuf + aoff)) 947 { 948 ddprintf(("scan: %d, %d\n", 949 (u_int32_t) iep->ie_number, 950 (u_int32_t) iep->ie_fnametype)); 951 952 /* check the name - the case-insensitible check 953 * has to come first, to break from this for loop 954 * if needed, so we can dive correctly */ 955 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 956 fname, fnamelen); 957 if (res > 0) break; 958 if (res < 0) continue; 959 960 if (iep->ie_fnametype == 0 || 961 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 962 { 963 res = NTFS_UASTRCMP(iep->ie_fname, 964 iep->ie_fnamelen, fname, fnamelen); 965 if (res != 0) continue; 966 } 967 968 if (aname) { 969 error = ntfs_ntlookupattr(ntmp, 970 aname, anamelen, 971 &attrtype, &attrname); 972 if (error) 973 goto fail; 974 } 975 976 /* Check if we've found ourself */ 977 if ((iep->ie_number == ip->i_number) && 978 (attrtype == fp->f_attrtype) && 979 ((!attrname && !fp->f_attrname) || 980 (attrname && fp->f_attrname && 981 !strcmp(attrname, fp->f_attrname)))) 982 { 983 VREF(vp); 984 *vpp = vp; 985 error = 0; 986 goto fail; 987 } 988 989 /* vget node, but don't load it */ 990 error = ntfs_vgetex(ntmp->ntm_mountp, 991 iep->ie_number, attrtype, attrname, 992 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 993 curthread, &nvp); 994 995 /* free the buffer returned by ntfs_ntlookupattr() */ 996 if (attrname) { 997 FREE(attrname, M_TEMP); 998 attrname = NULL; 999 } 1000 1001 if (error) 1002 goto fail; 1003 1004 nfp = VTOF(nvp); 1005 1006 if (nfp->f_flag & FN_VALID) { 1007 *vpp = nvp; 1008 goto fail; 1009 } 1010 1011 nfp->f_fflag = iep->ie_fflag; 1012 nfp->f_pnumber = iep->ie_fpnumber; 1013 nfp->f_times = iep->ie_ftimes; 1014 1015 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 1016 (nfp->f_attrtype == NTFS_A_DATA) && 1017 (nfp->f_attrname == NULL)) 1018 f_type = VDIR; 1019 else 1020 f_type = VREG; 1021 1022 nvp->v_type = f_type; 1023 1024 if ((nfp->f_attrtype == NTFS_A_DATA) && 1025 (nfp->f_attrname == NULL)) 1026 { 1027 /* Opening default attribute */ 1028 nfp->f_size = iep->ie_fsize; 1029 nfp->f_allocated = iep->ie_fallocated; 1030 nfp->f_flag |= FN_PRELOADED; 1031 } else { 1032 error = ntfs_filesize(ntmp, nfp, 1033 &nfp->f_size, &nfp->f_allocated); 1034 if (error) { 1035 vput(nvp); 1036 goto fail; 1037 } 1038 } 1039 1040 nfp->f_flag &= ~FN_VALID; 1041 *vpp = nvp; 1042 goto fail; 1043 } 1044 1045 /* Dive if possible */ 1046 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1047 dprintf(("ntfs_ntlookupfile: diving\n")); 1048 1049 cn = *(cn_t *) (rdbuf + aoff + 1050 iep->reclen - sizeof(cn_t)); 1051 rdsize = blsize; 1052 1053 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1054 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1055 if (error) 1056 goto fail; 1057 1058 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1059 rdbuf, rdsize); 1060 if (error) 1061 goto fail; 1062 1063 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1064 0x18); 1065 } else { 1066 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1067 error = ENOENT; 1068 break; 1069 } 1070 } while (1); 1071 1072 dprintf(("finish\n")); 1073 1074fail: 1075 if (attrname) FREE(attrname, M_TEMP); 1076 ntfs_ntvattrrele(vap); 1077 ntfs_ntput(ip); 1078 FREE(rdbuf, M_TEMP); 1079 return (error); 1080} 1081 1082/* 1083 * Check if name type is permitted to show. 1084 */ 1085int 1086ntfs_isnamepermitted( 1087 struct ntfsmount * ntmp, 1088 struct attr_indexentry * iep) 1089{ 1090 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1091 return 1; 1092 1093 switch (iep->ie_fnametype) { 1094 case 2: 1095 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n")); 1096 return 0; 1097 case 0: case 1: case 3: 1098 return 1; 1099 default: 1100 printf("ntfs_isnamepermitted: " \ 1101 "WARNING! Unknown file name type: %d\n", 1102 iep->ie_fnametype); 1103 break; 1104 } 1105 return 0; 1106} 1107 1108/* 1109 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1110 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1111 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1112 * fnode, so we can skip toward record number num almost immediatly. 1113 * Anyway this is rather slow routine. The problem is that we don't know 1114 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1115 */ 1116int 1117ntfs_ntreaddir( 1118 struct ntfsmount * ntmp, 1119 struct fnode * fp, 1120 u_int32_t num, 1121 struct attr_indexentry ** riepp) 1122{ 1123 struct ntnode *ip = FTONT(fp); 1124 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1125 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1126 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1127 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1128 u_int8_t *bmp = NULL; /* Bitmap */ 1129 u_int32_t blsize; /* Index allocation size (2048) */ 1130 u_int32_t rdsize; /* Length of data to read */ 1131 u_int32_t attrnum; /* Current attribute type */ 1132 u_int32_t cpbl = 1; /* Clusters per directory block */ 1133 u_int32_t blnum; 1134 struct attr_indexentry *iep; 1135 int error = ENOENT; 1136 u_int32_t aoff, cnum; 1137 1138 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1139 error = ntfs_ntget(ip); 1140 if (error) 1141 return (error); 1142 1143 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1144 if (error) 1145 return (ENOTDIR); 1146 1147 if (fp->f_dirblbuf == NULL) { 1148 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1149 MALLOC(fp->f_dirblbuf, caddr_t, 1150 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1151 } 1152 1153 blsize = fp->f_dirblsz; 1154 rdbuf = fp->f_dirblbuf; 1155 1156 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1157 1158 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1159 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1160 0, &bmvap); 1161 if (error) { 1162 error = ENOTDIR; 1163 goto fail; 1164 } 1165 MALLOC(bmp, u_int8_t *, bmvap->va_datalen, M_TEMP, M_WAITOK); 1166 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1167 bmvap->va_datalen, bmp, NULL); 1168 if (error) 1169 goto fail; 1170 1171 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1172 0, &iavap); 1173 if (error) { 1174 error = ENOTDIR; 1175 goto fail; 1176 } 1177 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1178 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1179 iavap->va_datalen, cpbl)); 1180 } else { 1181 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1182 iavap = bmvap = NULL; 1183 bmp = NULL; 1184 } 1185 1186 /* Try use previous values */ 1187 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1188 attrnum = fp->f_lastdattr; 1189 aoff = fp->f_lastdoff; 1190 blnum = fp->f_lastdblnum; 1191 cnum = fp->f_lastdnum; 1192 } else { 1193 attrnum = NTFS_A_INDXROOT; 1194 aoff = sizeof(struct attr_indexroot); 1195 blnum = 0; 1196 cnum = 0; 1197 } 1198 1199 do { 1200 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1201 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1202 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1203 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1204 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1205 if (error) 1206 goto fail; 1207 1208 if (attrnum == NTFS_A_INDX) { 1209 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1210 rdbuf, rdsize); 1211 if (error) 1212 goto fail; 1213 } 1214 if (aoff == 0) 1215 aoff = (attrnum == NTFS_A_INDX) ? 1216 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1217 sizeof(struct attr_indexroot); 1218 1219 iep = (struct attr_indexentry *) (rdbuf + aoff); 1220 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1221 aoff += iep->reclen, 1222 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1223 { 1224 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1225 1226 if (cnum >= num) { 1227 fp->f_lastdnum = cnum; 1228 fp->f_lastdoff = aoff; 1229 fp->f_lastdblnum = blnum; 1230 fp->f_lastdattr = attrnum; 1231 1232 *riepp = iep; 1233 1234 error = 0; 1235 goto fail; 1236 } 1237 cnum++; 1238 } 1239 1240 if (iavap) { 1241 if (attrnum == NTFS_A_INDXROOT) 1242 blnum = 0; 1243 else 1244 blnum++; 1245 1246 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1247 if (bmp[blnum >> 3] & (1 << (blnum & 7))) 1248 break; 1249 blnum++; 1250 } 1251 1252 attrnum = NTFS_A_INDX; 1253 aoff = 0; 1254 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1255 break; 1256 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1257 } 1258 } while (iavap); 1259 1260 *riepp = NULL; 1261 fp->f_lastdnum = 0; 1262 1263fail: 1264 if (vap) 1265 ntfs_ntvattrrele(vap); 1266 if (bmvap) 1267 ntfs_ntvattrrele(bmvap); 1268 if (iavap) 1269 ntfs_ntvattrrele(iavap); 1270 if (bmp) 1271 FREE(bmp, M_TEMP); 1272 ntfs_ntput(ip); 1273 return (error); 1274} 1275 1276/* 1277 * Convert NTFS times that are in 100 ns units and begins from 1278 * 1601 Jan 1 into unix times. 1279 */ 1280struct timespec 1281ntfs_nttimetounix( 1282 u_int64_t nt) 1283{ 1284 struct timespec t; 1285 1286 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1287 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1288 t.tv_sec = nt / (1000 * 1000 * 10) - 1289 369LL * 365LL * 24LL * 60LL * 60LL - 1290 89LL * 1LL * 24LL * 60LL * 60LL; 1291 return (t); 1292} 1293 1294/* 1295 * Get file times from NTFS_A_NAME attribute. 1296 */ 1297int 1298ntfs_times( 1299 struct ntfsmount * ntmp, 1300 struct ntnode * ip, 1301 ntfs_times_t * tm) 1302{ 1303 struct ntvattr *vap; 1304 int error; 1305 1306 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1307 1308 error = ntfs_ntget(ip); 1309 if (error) 1310 return (error); 1311 1312 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1313 if (error) { 1314 ntfs_ntput(ip); 1315 return (error); 1316 } 1317 *tm = vap->va_a_name->n_times; 1318 ntfs_ntvattrrele(vap); 1319 ntfs_ntput(ip); 1320 1321 return (0); 1322} 1323 1324/* 1325 * Get file sizes from corresponding attribute. 1326 * 1327 * ntnode under fnode should be locked. 1328 */ 1329int 1330ntfs_filesize( 1331 struct ntfsmount * ntmp, 1332 struct fnode * fp, 1333 u_int64_t * size, 1334 u_int64_t * bytes) 1335{ 1336 struct ntvattr *vap; 1337 struct ntnode *ip = FTONT(fp); 1338 u_int64_t sz, bn; 1339 int error; 1340 1341 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1342 1343 error = ntfs_ntvattrget(ntmp, ip, 1344 fp->f_attrtype, fp->f_attrname, 0, &vap); 1345 if (error) 1346 return (error); 1347 1348 bn = vap->va_allocated; 1349 sz = vap->va_datalen; 1350 1351 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1352 (u_int32_t) sz, (u_int32_t) bn)); 1353 1354 if (size) 1355 *size = sz; 1356 if (bytes) 1357 *bytes = bn; 1358 1359 ntfs_ntvattrrele(vap); 1360 1361 return (0); 1362} 1363 1364/* 1365 * This is one of write routine. 1366 */ 1367int 1368ntfs_writeattr_plain( 1369 struct ntfsmount * ntmp, 1370 struct ntnode * ip, 1371 u_int32_t attrnum, 1372 char *attrname, 1373 off_t roff, 1374 size_t rsize, 1375 void *rdata, 1376 size_t * initp, 1377 struct uio *uio) 1378{ 1379 size_t init; 1380 int error = 0; 1381 off_t off = roff, left = rsize, towrite; 1382 caddr_t data = rdata; 1383 struct ntvattr *vap; 1384 *initp = 0; 1385 1386 while (left) { 1387 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1388 ntfs_btocn(off), &vap); 1389 if (error) 1390 return (error); 1391 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1392 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1393 (u_int32_t) off, (u_int32_t) towrite, 1394 (u_int32_t) vap->va_vcnstart, 1395 (u_int32_t) vap->va_vcnend)); 1396 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1397 off - ntfs_cntob(vap->va_vcnstart), 1398 towrite, data, &init, uio); 1399 if (error) { 1400 printf("ntfs_writeattr_plain: " \ 1401 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1402 (u_int32_t) off, (u_int32_t) towrite); 1403 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1404 (u_int32_t) vap->va_vcnstart, 1405 (u_int32_t) vap->va_vcnend); 1406 ntfs_ntvattrrele(vap); 1407 break; 1408 } 1409 ntfs_ntvattrrele(vap); 1410 left -= towrite; 1411 off += towrite; 1412 data = data + towrite; 1413 *initp += init; 1414 } 1415 1416 return (error); 1417} 1418 1419/* 1420 * This is one of write routine. 1421 * 1422 * ntnode should be locked. 1423 */ 1424int 1425ntfs_writentvattr_plain( 1426 struct ntfsmount * ntmp, 1427 struct ntnode * ip, 1428 struct ntvattr * vap, 1429 off_t roff, 1430 size_t rsize, 1431 void *rdata, 1432 size_t * initp, 1433 struct uio *uio) 1434{ 1435 int error = 0; 1436 int off; 1437 int cnt; 1438 cn_t ccn, ccl, cn, left, cl; 1439 caddr_t data = rdata; 1440 struct buf *bp; 1441 size_t tocopy; 1442 1443 *initp = 0; 1444 1445 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1446 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1447 return ENOTTY; 1448 } 1449 1450 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1451 vap->va_vruncnt)); 1452 1453 off = roff; 1454 left = rsize; 1455 ccl = 0; 1456 ccn = 0; 1457 cnt = 0; 1458 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1459 ccn = vap->va_vruncn[cnt]; 1460 ccl = vap->va_vruncl[cnt]; 1461 1462 ddprintf(("ntfs_writentvattr_plain: " \ 1463 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1464 (u_int32_t) left, (u_int32_t) ccn, \ 1465 (u_int32_t) ccl, (u_int32_t) off)); 1466 1467 if (ntfs_cntob(ccl) < off) { 1468 off -= ntfs_cntob(ccl); 1469 cnt++; 1470 continue; 1471 } 1472 if (!ccn && ip->i_number != NTFS_BOOTINO) 1473 continue; /* XXX */ 1474 1475 ccl -= ntfs_btocn(off); 1476 cn = ccn + ntfs_btocn(off); 1477 off = ntfs_btocnoff(off); 1478 1479 while (left && ccl) { 1480 /* 1481 * Always read and write single clusters at a time - 1482 * we need to avoid requesting differently-sized 1483 * blocks at the same disk offsets to avoid 1484 * confusing the buffer cache. 1485 */ 1486 tocopy = min(left, ntfs_cntob(1) - off); 1487 cl = ntfs_btocl(tocopy + off); 1488 KASSERT(cl == 1 && tocopy <= ntfs_cntob(1), 1489 ("single cluster limit mistake")); 1490 ddprintf(("ntfs_writentvattr_plain: write: " \ 1491 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1492 (u_int32_t) cn, (u_int32_t) cl, 1493 (u_int32_t) off, (u_int32_t) tocopy, 1494 (u_int32_t) left)); 1495 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1496 { 1497 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1498 ntfs_cntob(cl), 0, 0, 0); 1499 clrbuf(bp); 1500 } else { 1501 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1502 ntfs_cntob(cl), NOCRED, &bp); 1503 if (error) { 1504 brelse(bp); 1505 return (error); 1506 } 1507 } 1508 if (uio) 1509 uiomove(bp->b_data + off, tocopy, uio); 1510 else 1511 memcpy(bp->b_data + off, data, tocopy); 1512 bawrite(bp); 1513 data = data + tocopy; 1514 *initp += tocopy; 1515 off = 0; 1516 left -= tocopy; 1517 cn += cl; 1518 ccl -= cl; 1519 } 1520 } 1521 1522 if (left) { 1523 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1524 error = EINVAL; 1525 } 1526 1527 return (error); 1528} 1529 1530/* 1531 * This is one of read routines. 1532 * 1533 * ntnode should be locked. 1534 */ 1535int 1536ntfs_readntvattr_plain( 1537 struct ntfsmount * ntmp, 1538 struct ntnode * ip, 1539 struct ntvattr * vap, 1540 off_t roff, 1541 size_t rsize, 1542 void *rdata, 1543 size_t * initp, 1544 struct uio *uio) 1545{ 1546 int error = 0; 1547 int off; 1548 1549 *initp = 0; 1550 if (vap->va_flag & NTFS_AF_INRUN) { 1551 int cnt; 1552 cn_t ccn, ccl, cn, left, cl; 1553 caddr_t data = rdata; 1554 struct buf *bp; 1555 size_t tocopy; 1556 1557 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1558 vap->va_vruncnt)); 1559 1560 off = roff; 1561 left = rsize; 1562 ccl = 0; 1563 ccn = 0; 1564 cnt = 0; 1565 while (left && (cnt < vap->va_vruncnt)) { 1566 ccn = vap->va_vruncn[cnt]; 1567 ccl = vap->va_vruncl[cnt]; 1568 1569 ddprintf(("ntfs_readntvattr_plain: " \ 1570 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1571 (u_int32_t) left, (u_int32_t) ccn, \ 1572 (u_int32_t) ccl, (u_int32_t) off)); 1573 1574 if (ntfs_cntob(ccl) < off) { 1575 off -= ntfs_cntob(ccl); 1576 cnt++; 1577 continue; 1578 } 1579 if (ccn || ip->i_number == NTFS_BOOTINO) { 1580 ccl -= ntfs_btocn(off); 1581 cn = ccn + ntfs_btocn(off); 1582 off = ntfs_btocnoff(off); 1583 1584 while (left && ccl) { 1585 /* 1586 * Always read single clusters at a 1587 * time - we need to avoid reading 1588 * differently-sized blocks at the 1589 * same disk offsets to avoid 1590 * confusing the buffer cache. 1591 */ 1592 tocopy = min(left, 1593 ntfs_cntob(1) - off); 1594 cl = ntfs_btocl(tocopy + off); 1595 KASSERT(cl == 1 && 1596 tocopy <= ntfs_cntob(1), 1597 ("single cluster limit mistake")); 1598 1599 ddprintf(("ntfs_readntvattr_plain: " \ 1600 "read: cn: 0x%x cl: %d, " \ 1601 "off: %d len: %d, left: %d\n", 1602 (u_int32_t) cn, 1603 (u_int32_t) cl, 1604 (u_int32_t) off, 1605 (u_int32_t) tocopy, 1606 (u_int32_t) left)); 1607 error = bread(ntmp->ntm_devvp, 1608 ntfs_cntobn(cn), 1609 ntfs_cntob(cl), 1610 NOCRED, &bp); 1611 if (error) { 1612 brelse(bp); 1613 return (error); 1614 } 1615 if (uio) { 1616 uiomove(bp->b_data + off, 1617 tocopy, uio); 1618 } else { 1619 memcpy(data, bp->b_data + off, 1620 tocopy); 1621 } 1622 brelse(bp); 1623 data = data + tocopy; 1624 *initp += tocopy; 1625 off = 0; 1626 left -= tocopy; 1627 cn += cl; 1628 ccl -= cl; 1629 } 1630 } else { 1631 tocopy = min(left, ntfs_cntob(ccl) - off); 1632 ddprintf(("ntfs_readntvattr_plain: " 1633 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1634 " len: %d, left: %d\n", 1635 (u_int32_t) ccn, (u_int32_t) ccl, 1636 (u_int32_t) off, (u_int32_t) tocopy, 1637 (u_int32_t) left)); 1638 left -= tocopy; 1639 off = 0; 1640 if (uio) { 1641 size_t remains = tocopy; 1642 for(; remains; remains--) 1643 uiomove("", 1, uio); 1644 } else 1645 bzero(data, tocopy); 1646 data = data + tocopy; 1647 } 1648 cnt++; 1649 } 1650 if (left) { 1651 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1652 error = E2BIG; 1653 } 1654 } else { 1655 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1656 if (uio) 1657 uiomove(vap->va_datap + roff, rsize, uio); 1658 else 1659 memcpy(rdata, vap->va_datap + roff, rsize); 1660 *initp += rsize; 1661 } 1662 1663 return (error); 1664} 1665 1666/* 1667 * This is one of read routines. 1668 */ 1669int 1670ntfs_readattr_plain( 1671 struct ntfsmount * ntmp, 1672 struct ntnode * ip, 1673 u_int32_t attrnum, 1674 char *attrname, 1675 off_t roff, 1676 size_t rsize, 1677 void *rdata, 1678 size_t * initp, 1679 struct uio *uio) 1680{ 1681 size_t init; 1682 int error = 0; 1683 off_t off = roff, left = rsize, toread; 1684 caddr_t data = rdata; 1685 struct ntvattr *vap; 1686 *initp = 0; 1687 1688 while (left) { 1689 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1690 ntfs_btocn(off), &vap); 1691 if (error) 1692 return (error); 1693 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1694 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1695 (u_int32_t) off, (u_int32_t) toread, 1696 (u_int32_t) vap->va_vcnstart, 1697 (u_int32_t) vap->va_vcnend)); 1698 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1699 off - ntfs_cntob(vap->va_vcnstart), 1700 toread, data, &init, uio); 1701 if (error) { 1702 printf("ntfs_readattr_plain: " \ 1703 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1704 (u_int32_t) off, (u_int32_t) toread); 1705 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1706 (u_int32_t) vap->va_vcnstart, 1707 (u_int32_t) vap->va_vcnend); 1708 ntfs_ntvattrrele(vap); 1709 break; 1710 } 1711 ntfs_ntvattrrele(vap); 1712 left -= toread; 1713 off += toread; 1714 data = data + toread; 1715 *initp += init; 1716 } 1717 1718 return (error); 1719} 1720 1721/* 1722 * This is one of read routines. 1723 */ 1724int 1725ntfs_readattr( 1726 struct ntfsmount * ntmp, 1727 struct ntnode * ip, 1728 u_int32_t attrnum, 1729 char *attrname, 1730 off_t roff, 1731 size_t rsize, 1732 void *rdata, 1733 struct uio *uio) 1734{ 1735 int error = 0; 1736 struct ntvattr *vap; 1737 size_t init; 1738 1739 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1740 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1741 1742 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1743 if (error) 1744 return (error); 1745 1746 if ((roff > vap->va_datalen) || 1747 (roff + rsize > vap->va_datalen)) { 1748 ddprintf(("ntfs_readattr: offset too big\n")); 1749 ntfs_ntvattrrele(vap); 1750 return (E2BIG); 1751 } 1752 if (vap->va_compression && vap->va_compressalg) { 1753 u_int8_t *cup; 1754 u_int8_t *uup; 1755 off_t off = roff, left = rsize, tocopy; 1756 caddr_t data = rdata; 1757 cn_t cn; 1758 1759 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1760 vap->va_compressalg)); 1761 1762 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1763 M_NTFSDECOMP, M_WAITOK); 1764 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL), 1765 M_NTFSDECOMP, M_WAITOK); 1766 1767 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1768 off = roff - ntfs_cntob(cn); 1769 1770 while (left) { 1771 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1772 attrname, ntfs_cntob(cn), 1773 ntfs_cntob(NTFS_COMPUNIT_CL), 1774 cup, &init, NULL); 1775 if (error) 1776 break; 1777 1778 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1779 1780 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1781 if (uio) 1782 uiomove(cup + off, tocopy, uio); 1783 else 1784 memcpy(data, cup + off, tocopy); 1785 } else if (init == 0) { 1786 if (uio) { 1787 size_t remains = tocopy; 1788 for(; remains; remains--) 1789 uiomove("", 1, uio); 1790 } 1791 else 1792 bzero(data, tocopy); 1793 } else { 1794 error = ntfs_uncompunit(ntmp, uup, cup); 1795 if (error) 1796 break; 1797 if (uio) 1798 uiomove(uup + off, tocopy, uio); 1799 else 1800 memcpy(data, uup + off, tocopy); 1801 } 1802 1803 left -= tocopy; 1804 data = data + tocopy; 1805 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1806 cn += NTFS_COMPUNIT_CL; 1807 } 1808 1809 FREE(uup, M_NTFSDECOMP); 1810 FREE(cup, M_NTFSDECOMP); 1811 } else 1812 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1813 roff, rsize, rdata, &init, uio); 1814 ntfs_ntvattrrele(vap); 1815 return (error); 1816} 1817 1818#if UNUSED_CODE 1819int 1820ntfs_parserun( 1821 cn_t * cn, 1822 cn_t * cl, 1823 u_int8_t * run, 1824 u_long len, 1825 u_long *off) 1826{ 1827 u_int8_t sz; 1828 int i; 1829 1830 if (NULL == run) { 1831 printf("ntfs_parsetun: run == NULL\n"); 1832 return (EINVAL); 1833 } 1834 sz = run[(*off)++]; 1835 if (0 == sz) { 1836 printf("ntfs_parserun: trying to go out of run\n"); 1837 return (E2BIG); 1838 } 1839 *cl = 0; 1840 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1841 printf("ntfs_parserun: " \ 1842 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1843 sz, len, *off); 1844 return (EINVAL); 1845 } 1846 for (i = 0; i < (sz & 0xF); i++) 1847 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1848 1849 sz >>= 4; 1850 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1851 printf("ntfs_parserun: " \ 1852 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1853 sz, len, *off); 1854 return (EINVAL); 1855 } 1856 for (i = 0; i < (sz & 0xF); i++) 1857 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1858 1859 return (0); 1860} 1861#endif 1862 1863/* 1864 * Process fixup routine on given buffer. 1865 */ 1866int 1867ntfs_procfixups( 1868 struct ntfsmount * ntmp, 1869 u_int32_t magic, 1870 caddr_t buf, 1871 size_t len) 1872{ 1873 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1874 int i; 1875 u_int16_t fixup; 1876 u_int16_t *fxp; 1877 u_int16_t *cfxp; 1878 1879 if (fhp->fh_magic != magic) { 1880 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1881 fhp->fh_magic, magic); 1882 return (EINVAL); 1883 } 1884 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1885 printf("ntfs_procfixups: " \ 1886 "bad fixups number: %d for %ld bytes block\n", 1887 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1888 return (EINVAL); 1889 } 1890 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1891 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1892 return (EINVAL); 1893 } 1894 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1895 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1896 fixup = *fxp++; 1897 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1898 if (*cfxp != fixup) { 1899 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1900 return (EINVAL); 1901 } 1902 *cfxp = *fxp; 1903 cfxp = (u_int16_t *) ((caddr_t) cfxp + ntmp->ntm_bps); 1904 } 1905 return (0); 1906} 1907 1908#if UNUSED_CODE 1909int 1910ntfs_runtocn( 1911 cn_t * cn, 1912 struct ntfsmount * ntmp, 1913 u_int8_t * run, 1914 u_long len, 1915 cn_t vcn) 1916{ 1917 cn_t ccn = 0; 1918 cn_t ccl = 0; 1919 u_long off = 0; 1920 int error = 0; 1921 1922#if NTFS_DEBUG 1923 int i; 1924 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1925 run, len, (u_long) vcn); 1926 printf("ntfs_runtocn: run: "); 1927 for (i = 0; i < len; i++) 1928 printf("0x%02x ", run[i]); 1929 printf("\n"); 1930#endif 1931 1932 if (NULL == run) { 1933 printf("ntfs_runtocn: run == NULL\n"); 1934 return (EINVAL); 1935 } 1936 do { 1937 if (run[off] == 0) { 1938 printf("ntfs_runtocn: vcn too big\n"); 1939 return (E2BIG); 1940 } 1941 vcn -= ccl; 1942 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1943 if (error) { 1944 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1945 return (error); 1946 } 1947 } while (ccl <= vcn); 1948 *cn = ccn + vcn; 1949 return (0); 1950} 1951#endif 1952 1953/* 1954 * this initializes toupper table & dependant variables to be ready for 1955 * later work 1956 */ 1957void 1958ntfs_toupper_init() 1959{ 1960 ntfs_toupper_tab = (wchar *) NULL; 1961 lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0); 1962 ntfs_toupper_usecount = 0; 1963} 1964 1965void 1966ntfs_toupper_destroy(void) 1967{ 1968 1969 lockdestroy(&ntfs_toupper_lock); 1970} 1971 1972/* 1973 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1974 * otherwise read the data from the filesystem we are currently mounting 1975 */ 1976int 1977ntfs_toupper_use(mp, ntmp) 1978 struct mount *mp; 1979 struct ntfsmount *ntmp; 1980{ 1981 int error = 0; 1982 struct vnode *vp; 1983 1984 /* get exclusive access */ 1985 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL, NULL); 1986 1987 /* only read the translation data from a file if it hasn't been 1988 * read already */ 1989 if (ntfs_toupper_tab) 1990 goto out; 1991 1992 /* 1993 * Read in Unicode lowercase -> uppercase translation file. 1994 * XXX for now, just the first 256 entries are used anyway, 1995 * so don't bother reading more 1996 */ 1997 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar), 1998 M_NTFSRDATA, M_WAITOK); 1999 2000 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, LK_EXCLUSIVE, &vp))) 2001 goto out; 2002 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 2003 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 2004 vput(vp); 2005 2006 out: 2007 ntfs_toupper_usecount++; 2008 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL, NULL); 2009 return (error); 2010} 2011 2012/* 2013 * lower the use count and if it reaches zero, free the memory 2014 * tied by toupper table 2015 */ 2016void 2017ntfs_toupper_unuse() 2018{ 2019 /* get exclusive access */ 2020 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL, NULL); 2021 2022 ntfs_toupper_usecount--; 2023 if (ntfs_toupper_usecount == 0) { 2024 FREE(ntfs_toupper_tab, M_NTFSRDATA); 2025 ntfs_toupper_tab = NULL; 2026 } 2027#ifdef DIAGNOSTIC 2028 else if (ntfs_toupper_usecount < 0) { 2029 panic("ntfs_toupper_unuse(): use count negative: %d\n", 2030 ntfs_toupper_usecount); 2031 } 2032#endif 2033 2034 /* release the lock */ 2035 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL, NULL); 2036} 2037 2038int 2039ntfs_u28_init( 2040 struct ntfsmount *ntmp, 2041 wchar *u2w, 2042 char *cs_local, 2043 char *cs_ntfs) 2044{ 2045 char ** u28; 2046 int i, j, h, l; 2047 2048 if (ntfs_iconv && cs_local) { 2049 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 2050 return (0); 2051 } 2052 2053 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2054 2055 for (i=0; i<256; i++) { 2056 h = (u2w[i] >> 8) & 0xFF; 2057 l = (u2w[i]) &0xFF; 2058 2059 if (u28[h] == NULL) { 2060 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK); 2061 for (j=0; j<256; j++) 2062 u28[h][j] = '_'; 2063 } 2064 2065 u28[h][l] = i & 0xFF; 2066 } 2067 2068 ntmp->ntm_u28 = u28; 2069 2070 return (0); 2071} 2072 2073int 2074ntfs_u28_uninit(struct ntfsmount *ntmp) 2075{ 2076 char ** u28; 2077 int i; 2078 2079 if (ntmp->ntm_u28 == NULL) { 2080 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2081 ntfs_iconv->close(ntmp->ntm_ic_u2l); 2082 } 2083 return (0); 2084 } 2085 2086 u28 = ntmp->ntm_u28; 2087 2088 for (i=0; i<256; i++) 2089 if (u28[i] != NULL) 2090 FREE(u28[i], M_TEMP); 2091 2092 FREE(u28, M_TEMP); 2093 2094 return (0); 2095} 2096 2097int 2098ntfs_82u_init( 2099 struct ntfsmount *ntmp, 2100 char *cs_local, 2101 char *cs_ntfs) 2102{ 2103 wchar * _82u; 2104 int i; 2105 2106 if (ntfs_iconv && cs_local) { 2107 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2108 return (0); 2109 } 2110 2111 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK); 2112 2113 for (i=0; i<256; i++) 2114 _82u[i] = i; 2115 2116 ntmp->ntm_82u = _82u; 2117 2118 return (0); 2119} 2120 2121int 2122ntfs_82u_uninit(struct ntfsmount *ntmp) 2123{ 2124 2125 if (ntmp->ntm_82u == NULL) { 2126 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2127 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2128 } 2129 return (0); 2130 } 2131 2132 FREE(ntmp->ntm_82u, M_TEMP); 2133 return (0); 2134} 2135 2136/* 2137 * maps the Unicode char to 8bit equivalent 2138 * XXX currently only gets lower 8bit from the Unicode char 2139 * and substitutes a '_' for it if the result would be '\0'; 2140 * something better has to be definitely though out 2141 */ 2142wchar 2143ntfs_u28( 2144 struct ntfsmount *ntmp, 2145 wchar wc) 2146{ 2147 char *p, *outp, inbuf[3], outbuf[3]; 2148 size_t ilen, olen; 2149 2150 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2151 ilen = olen = 2; 2152 2153 inbuf[0] = (char)(wc>>8); 2154 inbuf[1] = (char)wc; 2155 inbuf[2] = '\0'; 2156 p = inbuf; 2157 outp = outbuf; 2158 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen, 2159 &outp, &olen); 2160 if (olen == 1) { 2161 return ((wchar)(outbuf[0]&0xFF)); 2162 } else if (olen == 0) { 2163 return ((wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF))); 2164 } 2165 return ('?'); 2166 } 2167 2168 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2169 if (p == NULL) 2170 return ('_'); 2171 return (p[wc&0xFF]&0xFF); 2172} 2173 2174wchar 2175ntfs_82u( 2176 struct ntfsmount *ntmp, 2177 wchar wc, 2178 int *len) 2179{ 2180 char *p, *outp, inbuf[3], outbuf[3]; 2181 wchar uc; 2182 size_t ilen, olen; 2183 2184 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2185 ilen = (size_t)*len; 2186 olen = 2; 2187 2188 inbuf[0] = (char)(wc>>8); 2189 inbuf[1] = (char)wc; 2190 inbuf[2] = '\0'; 2191 p = inbuf; 2192 outp = outbuf; 2193 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, (const char **)&p, &ilen, 2194 &outp, &olen); 2195 *len -= (int)ilen; 2196 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2197 2198 return (uc); 2199 } 2200 2201 if (ntmp->ntm_82u != NULL) 2202 return (ntmp->ntm_82u[wc&0xFF]); 2203 2204 return ('?'); 2205} 2206 2207