ntfs_subr.c revision 184205
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 184205 2008-10-23 15:53:51Z des $ 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, "ntfsd_resdata", "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 alpool = malloc(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 mfrp = malloc(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); 362 363 return 0; 364} 365 366/* 367 * Routine search ntnode in hash, if found: lock, inc usecount and return. 368 * If not in hash allocate structure for ntnode, prefill it, lock, 369 * inc count and return. 370 * 371 * ntnode returned locked 372 */ 373int 374ntfs_ntlookup( 375 struct ntfsmount * ntmp, 376 ino_t ino, 377 struct ntnode ** ipp) 378{ 379 struct ntnode *ip; 380 381 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 382 383 do { 384 ip = ntfs_nthashlookup(ntmp->ntm_devvp->v_rdev, ino); 385 if (ip != NULL) { 386 ntfs_ntget(ip); 387 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 388 ino, ip, ip->i_usecount)); 389 *ipp = ip; 390 return (0); 391 } 392 } while (lockmgr(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL)); 393 394 ip = malloc(sizeof(struct ntnode), M_NTFSNTNODE, 395 M_WAITOK | M_ZERO); 396 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 397 398 /* Generic initialization */ 399 ip->i_devvp = ntmp->ntm_devvp; 400 ip->i_dev = ntmp->ntm_devvp->v_rdev; 401 ip->i_number = ino; 402 ip->i_mp = ntmp; 403 404 LIST_INIT(&ip->i_fnlist); 405 VREF(ip->i_devvp); 406 407 /* init lock and lock the newborn ntnode */ 408 lockinit(&ip->i_lock, PINOD, "ntnode", 0, 0); 409 mtx_init(&ip->i_interlock, "ntnode interlock", NULL, MTX_DEF); 410 ntfs_ntget(ip); 411 412 ntfs_nthashins(ip); 413 414 lockmgr(&ntfs_hashlock, LK_RELEASE, NULL); 415 416 *ipp = ip; 417 418 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 419 ino, ip, ip->i_usecount)); 420 421 return (0); 422} 423 424/* 425 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 426 * deallocate ntnode. 427 * 428 * ntnode should be locked on entry, and unlocked on return. 429 */ 430void 431ntfs_ntput(ip) 432 struct ntnode *ip; 433{ 434 struct ntvattr *vap; 435 436 dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n", 437 ip->i_number, ip, ip->i_usecount)); 438 439 mtx_lock(&ip->i_interlock); 440 ip->i_usecount--; 441 442#ifdef DIAGNOSTIC 443 if (ip->i_usecount < 0) { 444 panic("ntfs_ntput: ino: %d usecount: %d \n", 445 ip->i_number,ip->i_usecount); 446 } 447#endif 448 449 if (ip->i_usecount > 0) { 450 lockmgr(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock); 451 return; 452 } 453 454 dprintf(("ntfs_ntput: deallocating ntnode: %d\n", ip->i_number)); 455 456 if (LIST_FIRST(&ip->i_fnlist)) 457 panic("ntfs_ntput: ntnode has fnodes\n"); 458 459 ntfs_nthashrem(ip); 460 461 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 462 LIST_REMOVE(vap,va_list); 463 ntfs_freentvattr(vap); 464 } 465 lockmgr(&ip->i_lock, LK_RELEASE | LK_INTERLOCK, &ip->i_interlock); 466 mtx_destroy(&ip->i_interlock); 467 lockdestroy(&ip->i_lock); 468 vrele(ip->i_devvp); 469 free(ip, M_NTFSNTNODE); 470} 471 472/* 473 * increment usecount of ntnode 474 */ 475void 476ntfs_ntref(ip) 477 struct ntnode *ip; 478{ 479 mtx_lock(&ip->i_interlock); 480 ip->i_usecount++; 481 mtx_unlock(&ip->i_interlock); 482 483 dprintf(("ntfs_ntref: ino %d, usecount: %d\n", 484 ip->i_number, ip->i_usecount)); 485 486} 487 488/* 489 * Decrement usecount of ntnode. 490 */ 491void 492ntfs_ntrele(ip) 493 struct ntnode *ip; 494{ 495 dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n", 496 ip->i_number, ip, ip->i_usecount)); 497 498 mtx_lock(&ip->i_interlock); 499 ip->i_usecount--; 500 501 if (ip->i_usecount < 0) 502 panic("ntfs_ntrele: ino: %d usecount: %d \n", 503 ip->i_number,ip->i_usecount); 504 mtx_unlock(&ip->i_interlock); 505} 506 507/* 508 * Deallocate all memory allocated for ntvattr 509 */ 510void 511ntfs_freentvattr(vap) 512 struct ntvattr * vap; 513{ 514 if (vap->va_flag & NTFS_AF_INRUN) { 515 if (vap->va_vruncn) 516 free(vap->va_vruncn, M_NTFSRUN); 517 if (vap->va_vruncl) 518 free(vap->va_vruncl, M_NTFSRUN); 519 } else { 520 if (vap->va_datap) 521 free(vap->va_datap, M_NTFSRDATA); 522 } 523 free(vap, M_NTFSNTVATTR); 524} 525 526/* 527 * Convert disk image of attribute into ntvattr structure, 528 * runs are expanded also. 529 */ 530int 531ntfs_attrtontvattr( 532 struct ntfsmount * ntmp, 533 struct ntvattr ** rvapp, 534 struct attr * rap) 535{ 536 int error, i; 537 struct ntvattr *vap; 538 539 error = 0; 540 *rvapp = NULL; 541 542 vap = malloc(sizeof(struct ntvattr), 543 M_NTFSNTVATTR, M_WAITOK | M_ZERO); 544 vap->va_ip = NULL; 545 vap->va_flag = rap->a_hdr.a_flag; 546 vap->va_type = rap->a_hdr.a_type; 547 vap->va_compression = rap->a_hdr.a_compression; 548 vap->va_index = rap->a_hdr.a_index; 549 550 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 551 552 vap->va_namelen = rap->a_hdr.a_namelen; 553 if (rap->a_hdr.a_namelen) { 554 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 555 ddprintf((", name:[")); 556 for (i = 0; i < vap->va_namelen; i++) { 557 vap->va_name[i] = unp[i]; 558 ddprintf(("%c", vap->va_name[i])); 559 } 560 ddprintf(("]")); 561 } 562 if (vap->va_flag & NTFS_AF_INRUN) { 563 ddprintf((", nonres.")); 564 vap->va_datalen = rap->a_nr.a_datalen; 565 vap->va_allocated = rap->a_nr.a_allocated; 566 vap->va_vcnstart = rap->a_nr.a_vcnstart; 567 vap->va_vcnend = rap->a_nr.a_vcnend; 568 vap->va_compressalg = rap->a_nr.a_compressalg; 569 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 570 &(vap->va_vruncnt), 571 (caddr_t) rap + rap->a_nr.a_dataoff); 572 } else { 573 vap->va_compressalg = 0; 574 ddprintf((", res.")); 575 vap->va_datalen = rap->a_r.a_datalen; 576 vap->va_allocated = rap->a_r.a_datalen; 577 vap->va_vcnstart = 0; 578 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 579 vap->va_datap = malloc(vap->va_datalen, 580 M_NTFSRDATA, M_WAITOK); 581 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 582 rap->a_r.a_datalen); 583 } 584 ddprintf((", len: %d", vap->va_datalen)); 585 586 if (error) 587 free(vap, M_NTFSNTVATTR); 588 else 589 *rvapp = vap; 590 591 ddprintf(("\n")); 592 593 return (error); 594} 595 596/* 597 * Expand run into more utilizable and more memory eating format. 598 */ 599int 600ntfs_runtovrun( 601 cn_t ** rcnp, 602 cn_t ** rclp, 603 u_long * rcntp, 604 u_int8_t * run) 605{ 606 u_int32_t off; 607 u_int32_t sz, i; 608 cn_t *cn; 609 cn_t *cl; 610 u_long cnt; 611 cn_t prev; 612 cn_t tmp; 613 614 off = 0; 615 cnt = 0; 616 i = 0; 617 while (run[off]) { 618 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 619 cnt++; 620 } 621 cn = malloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 622 cl = malloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 623 624 off = 0; 625 cnt = 0; 626 prev = 0; 627 while (run[off]) { 628 629 sz = run[off++]; 630 cl[cnt] = 0; 631 632 for (i = 0; i < (sz & 0xF); i++) 633 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 634 635 sz >>= 4; 636 if (run[off + sz - 1] & 0x80) { 637 tmp = ((u_int64_t) - 1) << (sz << 3); 638 for (i = 0; i < sz; i++) 639 tmp |= (u_int64_t) run[off++] << (i << 3); 640 } else { 641 tmp = 0; 642 for (i = 0; i < sz; i++) 643 tmp |= (u_int64_t) run[off++] << (i << 3); 644 } 645 if (tmp) 646 prev = cn[cnt] = prev + tmp; 647 else 648 cn[cnt] = tmp; 649 650 cnt++; 651 } 652 *rcnp = cn; 653 *rclp = cl; 654 *rcntp = cnt; 655 return (0); 656} 657 658/* 659 * Compare unicode and ascii string case insens. 660 */ 661static int 662ntfs_uastricmp(ntmp, ustr, ustrlen, astr, astrlen) 663 struct ntfsmount *ntmp; 664 const wchar *ustr; 665 size_t ustrlen; 666 const char *astr; 667 size_t astrlen; 668{ 669 int len; 670 size_t i, j, mbstrlen = astrlen; 671 int res; 672 wchar wc; 673 674 if (ntmp->ntm_ic_l2u) { 675 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++, j++) { 676 if (j < astrlen -1) { 677 wc = (wchar)astr[j]<<8 | (astr[j+1]&0xFF); 678 len = 2; 679 } else { 680 wc = (wchar)astr[j]<<8 & 0xFF00; 681 len = 1; 682 } 683 res = ((int) NTFS_TOUPPER(ustr[i])) - 684 ((int)NTFS_TOUPPER(NTFS_82U(wc, &len))); 685 j += len - 1; 686 mbstrlen -= len - 1; 687 688 if (res) 689 return res; 690 } 691 } else { 692 /* 693 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 694 * symbols not covered by translation table 695 */ 696 for (i = 0; i < ustrlen && i < astrlen; i++) { 697 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 698 ((int)NTFS_TOUPPER(NTFS_82U((wchar)astr[i], &len))); 699 if (res) 700 return res; 701 } 702 } 703 return (ustrlen - mbstrlen); 704} 705 706/* 707 * Compare unicode and ascii string case sens. 708 */ 709static int 710ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 711 struct ntfsmount *ntmp; 712 const wchar *ustr; 713 size_t ustrlen; 714 const char *astr; 715 size_t astrlen; 716{ 717 char u, l; 718 size_t i, j, mbstrlen = astrlen; 719 int res; 720 wchar wc; 721 722 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, j++) { 723 res = 0; 724 wc = NTFS_U28(ustr[i]); 725 u = (char)(wc>>8); 726 l = (char)wc; 727 if (u != '\0' && j < astrlen -1) { 728 res = (int) (u - astr[j++]); 729 mbstrlen--; 730 } 731 res = (res<<8) + (int) (l - astr[j]); 732 if (res) 733 return res; 734 } 735 return (ustrlen - mbstrlen); 736} 737 738/* 739 * Search fnode in ntnode, if not found allocate and preinitialize. 740 * 741 * ntnode should be locked on entry. 742 */ 743int 744ntfs_fget( 745 struct ntfsmount *ntmp, 746 struct ntnode *ip, 747 int attrtype, 748 char *attrname, 749 struct fnode **fpp) 750{ 751 struct fnode *fp; 752 753 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 754 ip->i_number,attrtype, attrname?attrname:"")); 755 *fpp = NULL; 756 LIST_FOREACH(fp, &ip->i_fnlist, f_fnlist){ 757 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 758 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 759 760 if ((attrtype == fp->f_attrtype) && 761 ((!attrname && !fp->f_attrname) || 762 (attrname && fp->f_attrname && 763 !strcmp(attrname,fp->f_attrname)))){ 764 dprintf(("ntfs_fget: found existed: %p\n",fp)); 765 *fpp = fp; 766 } 767 } 768 769 if (*fpp) 770 return (0); 771 772 fp = malloc(sizeof(struct fnode), M_NTFSFNODE, 773 M_WAITOK | M_ZERO); 774 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 775 776 fp->f_ip = ip; 777 if (attrname) { 778 fp->f_flag |= FN_AATTRNAME; 779 fp->f_attrname = malloc(strlen(attrname)+1, M_TEMP, M_WAITOK); 780 strcpy(fp->f_attrname, attrname); 781 } else 782 fp->f_attrname = NULL; 783 fp->f_attrtype = attrtype; 784 785 ntfs_ntref(ip); 786 787 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 788 789 *fpp = fp; 790 791 return (0); 792} 793 794/* 795 * Deallocate fnode, remove it from ntnode's fnode list. 796 * 797 * ntnode should be locked. 798 */ 799void 800ntfs_frele( 801 struct fnode *fp) 802{ 803 struct ntnode *ip = FTONT(fp); 804 805 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 806 807 dprintf(("ntfs_frele: deallocating fnode\n")); 808 LIST_REMOVE(fp,f_fnlist); 809 if (fp->f_flag & FN_AATTRNAME) 810 free(fp->f_attrname, M_TEMP); 811 if (fp->f_dirblbuf) 812 free(fp->f_dirblbuf, M_NTFSDIR); 813 free(fp, M_NTFSFNODE); 814 ntfs_ntrele(ip); 815} 816 817/* 818 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 819 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 820 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 821 */ 822static int 823ntfs_ntlookupattr( 824 struct ntfsmount * ntmp, 825 const char * name, 826 int namelen, 827 int *attrtype, 828 char **attrname) 829{ 830 const char *sys; 831 size_t syslen, i; 832 struct ntvattrdef *adp; 833 834 if (namelen == 0) 835 return (0); 836 837 if (name[0] == '$') { 838 sys = name; 839 for (syslen = 0; syslen < namelen; syslen++) { 840 if(sys[syslen] == ':') { 841 name++; 842 namelen--; 843 break; 844 } 845 } 846 name += syslen; 847 namelen -= syslen; 848 849 adp = ntmp->ntm_ad; 850 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 851 if (syslen != adp->ad_namelen || 852 strncmp(sys, adp->ad_name, syslen) != 0) 853 continue; 854 855 *attrtype = adp->ad_type; 856 goto out; 857 } 858 return (ENOENT); 859 } else 860 *attrtype = NTFS_A_DATA; 861 862 out: 863 if (namelen) { 864 (*attrname) = malloc(namelen, M_TEMP, M_WAITOK); 865 memcpy((*attrname), name, namelen); 866 (*attrname)[namelen] = '\0'; 867 } 868 869 return (0); 870} 871 872/* 873 * Lookup specifed node for filename, matching cnp, 874 * return fnode filled. 875 */ 876int 877ntfs_ntlookupfile( 878 struct ntfsmount * ntmp, 879 struct vnode * vp, 880 struct componentname * cnp, 881 struct vnode ** vpp) 882{ 883 struct fnode *fp = VTOF(vp); 884 struct ntnode *ip = FTONT(fp); 885 struct ntvattr *vap; /* Root attribute */ 886 cn_t cn; /* VCN in current attribute */ 887 caddr_t rdbuf; /* Buffer to read directory's blocks */ 888 u_int32_t blsize; 889 u_int64_t rdsize; /* Length of data to read from current block */ 890 struct attr_indexentry *iep; 891 int error, res, anamelen, fnamelen; 892 const char *fname,*aname; 893 u_int32_t aoff; 894 int attrtype = NTFS_A_DATA; 895 char *attrname = NULL; 896 struct fnode *nfp; 897 struct vnode *nvp; 898 enum vtype f_type; 899 900 error = ntfs_ntget(ip); 901 if (error) 902 return (error); 903 904 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 905 if (error || (vap->va_flag & NTFS_AF_INRUN)) 906 return (ENOTDIR); 907 908 blsize = vap->va_a_iroot->ir_size; 909 rdsize = vap->va_datalen; 910 911 /* 912 * Divide file name into: foofilefoofilefoofile[:attrspec] 913 * Store like this: fname:fnamelen [aname:anamelen] 914 */ 915 fname = cnp->cn_nameptr; 916 aname = NULL; 917 anamelen = 0; 918 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 919 if(fname[fnamelen] == ':') { 920 aname = fname + fnamelen + 1; 921 anamelen = cnp->cn_namelen - fnamelen - 1; 922 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 923 fname, fnamelen, aname, anamelen)); 924 break; 925 } 926 927 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %jd\n", blsize, rdsize)); 928 929 rdbuf = malloc(blsize, M_TEMP, M_WAITOK); 930 931 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 932 0, rdsize, rdbuf, NULL); 933 if (error) 934 goto fail; 935 936 aoff = sizeof(struct attr_indexroot); 937 938 do { 939 iep = (struct attr_indexentry *) (rdbuf + aoff); 940 941 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 942 aoff += iep->reclen, 943 iep = (struct attr_indexentry *) (rdbuf + aoff)) 944 { 945 ddprintf(("scan: %d, %d\n", 946 (u_int32_t) iep->ie_number, 947 (u_int32_t) iep->ie_fnametype)); 948 949 /* check the name - the case-insensitible check 950 * has to come first, to break from this for loop 951 * if needed, so we can dive correctly */ 952 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 953 fname, fnamelen); 954 if (res > 0) break; 955 if (res < 0) continue; 956 957 if (iep->ie_fnametype == 0 || 958 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 959 { 960 res = NTFS_UASTRCMP(iep->ie_fname, 961 iep->ie_fnamelen, fname, fnamelen); 962 if (res != 0) continue; 963 } 964 965 if (aname) { 966 error = ntfs_ntlookupattr(ntmp, 967 aname, anamelen, 968 &attrtype, &attrname); 969 if (error) 970 goto fail; 971 } 972 973 /* Check if we've found ourself */ 974 if ((iep->ie_number == ip->i_number) && 975 (attrtype == fp->f_attrtype) && 976 ((!attrname && !fp->f_attrname) || 977 (attrname && fp->f_attrname && 978 !strcmp(attrname, fp->f_attrname)))) 979 { 980 VREF(vp); 981 *vpp = vp; 982 error = 0; 983 goto fail; 984 } 985 986 /* vget node, but don't load it */ 987 error = ntfs_vgetex(ntmp->ntm_mountp, 988 iep->ie_number, attrtype, attrname, 989 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 990 curthread, &nvp); 991 992 /* free the buffer returned by ntfs_ntlookupattr() */ 993 if (attrname) { 994 free(attrname, M_TEMP); 995 attrname = NULL; 996 } 997 998 if (error) 999 goto fail; 1000 1001 nfp = VTOF(nvp); 1002 1003 if (nfp->f_flag & FN_VALID) { 1004 *vpp = nvp; 1005 goto fail; 1006 } 1007 1008 nfp->f_fflag = iep->ie_fflag; 1009 nfp->f_pnumber = iep->ie_fpnumber; 1010 nfp->f_times = iep->ie_ftimes; 1011 1012 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 1013 (nfp->f_attrtype == NTFS_A_DATA) && 1014 (nfp->f_attrname == NULL)) 1015 f_type = VDIR; 1016 else 1017 f_type = VREG; 1018 1019 nvp->v_type = f_type; 1020 1021 if ((nfp->f_attrtype == NTFS_A_DATA) && 1022 (nfp->f_attrname == NULL)) 1023 { 1024 /* Opening default attribute */ 1025 nfp->f_size = iep->ie_fsize; 1026 nfp->f_allocated = iep->ie_fallocated; 1027 nfp->f_flag |= FN_PRELOADED; 1028 } else { 1029 error = ntfs_filesize(ntmp, nfp, 1030 &nfp->f_size, &nfp->f_allocated); 1031 if (error) { 1032 vput(nvp); 1033 goto fail; 1034 } 1035 } 1036 1037 nfp->f_flag &= ~FN_VALID; 1038 *vpp = nvp; 1039 goto fail; 1040 } 1041 1042 /* Dive if possible */ 1043 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1044 dprintf(("ntfs_ntlookupfile: diving\n")); 1045 1046 cn = *(cn_t *) (rdbuf + aoff + 1047 iep->reclen - sizeof(cn_t)); 1048 rdsize = blsize; 1049 1050 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1051 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1052 if (error) 1053 goto fail; 1054 1055 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1056 rdbuf, rdsize); 1057 if (error) 1058 goto fail; 1059 1060 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1061 0x18); 1062 } else { 1063 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1064 error = ENOENT; 1065 break; 1066 } 1067 } while (1); 1068 1069 dprintf(("finish\n")); 1070 1071fail: 1072 if (attrname) free(attrname, M_TEMP); 1073 ntfs_ntvattrrele(vap); 1074 ntfs_ntput(ip); 1075 free(rdbuf, M_TEMP); 1076 return (error); 1077} 1078 1079/* 1080 * Check if name type is permitted to show. 1081 */ 1082int 1083ntfs_isnamepermitted( 1084 struct ntfsmount * ntmp, 1085 struct attr_indexentry * iep) 1086{ 1087 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1088 return 1; 1089 1090 switch (iep->ie_fnametype) { 1091 case 2: 1092 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n")); 1093 return 0; 1094 case 0: case 1: case 3: 1095 return 1; 1096 default: 1097 printf("ntfs_isnamepermitted: " \ 1098 "WARNING! Unknown file name type: %d\n", 1099 iep->ie_fnametype); 1100 break; 1101 } 1102 return 0; 1103} 1104 1105/* 1106 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1107 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1108 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1109 * fnode, so we can skip toward record number num almost immediatly. 1110 * Anyway this is rather slow routine. The problem is that we don't know 1111 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1112 */ 1113int 1114ntfs_ntreaddir( 1115 struct ntfsmount * ntmp, 1116 struct fnode * fp, 1117 u_int32_t num, 1118 struct attr_indexentry ** riepp) 1119{ 1120 struct ntnode *ip = FTONT(fp); 1121 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1122 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1123 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1124 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1125 u_int8_t *bmp = NULL; /* Bitmap */ 1126 u_int32_t blsize; /* Index allocation size (2048) */ 1127 u_int32_t rdsize; /* Length of data to read */ 1128 u_int32_t attrnum; /* Current attribute type */ 1129 u_int32_t cpbl = 1; /* Clusters per directory block */ 1130 u_int32_t blnum; 1131 struct attr_indexentry *iep; 1132 int error = ENOENT; 1133 u_int32_t aoff, cnum; 1134 1135 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1136 error = ntfs_ntget(ip); 1137 if (error) 1138 return (error); 1139 1140 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1141 if (error) 1142 return (ENOTDIR); 1143 1144 if (fp->f_dirblbuf == NULL) { 1145 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1146 fp->f_dirblbuf = malloc( max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK); 1147 } 1148 1149 blsize = fp->f_dirblsz; 1150 rdbuf = fp->f_dirblbuf; 1151 1152 dprintf(("ntfs_ntreaddir: rdbuf: %p, blsize: %d\n", rdbuf, blsize)); 1153 1154 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1155 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1156 0, &bmvap); 1157 if (error) { 1158 error = ENOTDIR; 1159 goto fail; 1160 } 1161 bmp = malloc(bmvap->va_datalen, M_TEMP, M_WAITOK); 1162 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1163 bmvap->va_datalen, bmp, NULL); 1164 if (error) 1165 goto fail; 1166 1167 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1168 0, &iavap); 1169 if (error) { 1170 error = ENOTDIR; 1171 goto fail; 1172 } 1173 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1174 dprintf(("ntfs_ntreaddir: indexalloc: %jd, cpbl: %d\n", 1175 iavap->va_datalen, cpbl)); 1176 } else { 1177 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1178 iavap = bmvap = NULL; 1179 bmp = NULL; 1180 } 1181 1182 /* Try use previous values */ 1183 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1184 attrnum = fp->f_lastdattr; 1185 aoff = fp->f_lastdoff; 1186 blnum = fp->f_lastdblnum; 1187 cnum = fp->f_lastdnum; 1188 } else { 1189 attrnum = NTFS_A_INDXROOT; 1190 aoff = sizeof(struct attr_indexroot); 1191 blnum = 0; 1192 cnum = 0; 1193 } 1194 1195 do { 1196 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1197 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1198 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1199 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1200 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1201 if (error) 1202 goto fail; 1203 1204 if (attrnum == NTFS_A_INDX) { 1205 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1206 rdbuf, rdsize); 1207 if (error) 1208 goto fail; 1209 } 1210 if (aoff == 0) 1211 aoff = (attrnum == NTFS_A_INDX) ? 1212 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1213 sizeof(struct attr_indexroot); 1214 1215 iep = (struct attr_indexentry *) (rdbuf + aoff); 1216 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1217 aoff += iep->reclen, 1218 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1219 { 1220 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1221 1222 if (cnum >= num) { 1223 fp->f_lastdnum = cnum; 1224 fp->f_lastdoff = aoff; 1225 fp->f_lastdblnum = blnum; 1226 fp->f_lastdattr = attrnum; 1227 1228 *riepp = iep; 1229 1230 error = 0; 1231 goto fail; 1232 } 1233 cnum++; 1234 } 1235 1236 if (iavap) { 1237 if (attrnum == NTFS_A_INDXROOT) 1238 blnum = 0; 1239 else 1240 blnum++; 1241 1242 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1243 if (bmp[blnum >> 3] & (1 << (blnum & 7))) 1244 break; 1245 blnum++; 1246 } 1247 1248 attrnum = NTFS_A_INDX; 1249 aoff = 0; 1250 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1251 break; 1252 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1253 } 1254 } while (iavap); 1255 1256 *riepp = NULL; 1257 fp->f_lastdnum = 0; 1258 1259fail: 1260 if (vap) 1261 ntfs_ntvattrrele(vap); 1262 if (bmvap) 1263 ntfs_ntvattrrele(bmvap); 1264 if (iavap) 1265 ntfs_ntvattrrele(iavap); 1266 if (bmp) 1267 free(bmp, M_TEMP); 1268 ntfs_ntput(ip); 1269 return (error); 1270} 1271 1272/* 1273 * Convert NTFS times that are in 100 ns units and begins from 1274 * 1601 Jan 1 into unix times. 1275 */ 1276struct timespec 1277ntfs_nttimetounix( 1278 u_int64_t nt) 1279{ 1280 struct timespec t; 1281 1282 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1283 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1284 t.tv_sec = nt / (1000 * 1000 * 10) - 1285 369LL * 365LL * 24LL * 60LL * 60LL - 1286 89LL * 1LL * 24LL * 60LL * 60LL; 1287 return (t); 1288} 1289 1290/* 1291 * Get file times from NTFS_A_NAME attribute. 1292 */ 1293int 1294ntfs_times( 1295 struct ntfsmount * ntmp, 1296 struct ntnode * ip, 1297 ntfs_times_t * tm) 1298{ 1299 struct ntvattr *vap; 1300 int error; 1301 1302 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1303 1304 error = ntfs_ntget(ip); 1305 if (error) 1306 return (error); 1307 1308 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1309 if (error) { 1310 ntfs_ntput(ip); 1311 return (error); 1312 } 1313 *tm = vap->va_a_name->n_times; 1314 ntfs_ntvattrrele(vap); 1315 ntfs_ntput(ip); 1316 1317 return (0); 1318} 1319 1320/* 1321 * Get file sizes from corresponding attribute. 1322 * 1323 * ntnode under fnode should be locked. 1324 */ 1325int 1326ntfs_filesize( 1327 struct ntfsmount * ntmp, 1328 struct fnode * fp, 1329 u_int64_t * size, 1330 u_int64_t * bytes) 1331{ 1332 struct ntvattr *vap; 1333 struct ntnode *ip = FTONT(fp); 1334 u_int64_t sz, bn; 1335 int error; 1336 1337 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1338 1339 error = ntfs_ntvattrget(ntmp, ip, 1340 fp->f_attrtype, fp->f_attrname, 0, &vap); 1341 if (error) 1342 return (error); 1343 1344 bn = vap->va_allocated; 1345 sz = vap->va_datalen; 1346 1347 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1348 (u_int32_t) sz, (u_int32_t) bn)); 1349 1350 if (size) 1351 *size = sz; 1352 if (bytes) 1353 *bytes = bn; 1354 1355 ntfs_ntvattrrele(vap); 1356 1357 return (0); 1358} 1359 1360/* 1361 * This is one of write routine. 1362 */ 1363int 1364ntfs_writeattr_plain( 1365 struct ntfsmount * ntmp, 1366 struct ntnode * ip, 1367 u_int32_t attrnum, 1368 char *attrname, 1369 off_t roff, 1370 size_t rsize, 1371 void *rdata, 1372 size_t * initp, 1373 struct uio *uio) 1374{ 1375 size_t init; 1376 int error = 0; 1377 off_t off = roff, left = rsize, towrite; 1378 caddr_t data = rdata; 1379 struct ntvattr *vap; 1380 *initp = 0; 1381 1382 while (left) { 1383 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1384 ntfs_btocn(off), &vap); 1385 if (error) 1386 return (error); 1387 towrite = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1388 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1389 (u_int32_t) off, (u_int32_t) towrite, 1390 (u_int32_t) vap->va_vcnstart, 1391 (u_int32_t) vap->va_vcnend)); 1392 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1393 off - ntfs_cntob(vap->va_vcnstart), 1394 towrite, data, &init, uio); 1395 if (error) { 1396 printf("ntfs_writeattr_plain: " \ 1397 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1398 (u_int32_t) off, (u_int32_t) towrite); 1399 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1400 (u_int32_t) vap->va_vcnstart, 1401 (u_int32_t) vap->va_vcnend); 1402 ntfs_ntvattrrele(vap); 1403 break; 1404 } 1405 ntfs_ntvattrrele(vap); 1406 left -= towrite; 1407 off += towrite; 1408 data = data + towrite; 1409 *initp += init; 1410 } 1411 1412 return (error); 1413} 1414 1415/* 1416 * This is one of write routine. 1417 * 1418 * ntnode should be locked. 1419 */ 1420int 1421ntfs_writentvattr_plain( 1422 struct ntfsmount * ntmp, 1423 struct ntnode * ip, 1424 struct ntvattr * vap, 1425 off_t roff, 1426 size_t rsize, 1427 void *rdata, 1428 size_t * initp, 1429 struct uio *uio) 1430{ 1431 int error = 0; 1432 off_t off; 1433 int cnt; 1434 cn_t ccn, ccl, cn, left, cl; 1435 caddr_t data = rdata; 1436 struct buf *bp; 1437 size_t tocopy; 1438 1439 *initp = 0; 1440 1441 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1442 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1443 return ENOTTY; 1444 } 1445 1446 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1447 vap->va_vruncnt)); 1448 1449 off = roff; 1450 left = rsize; 1451 ccl = 0; 1452 ccn = 0; 1453 cnt = 0; 1454 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1455 ccn = vap->va_vruncn[cnt]; 1456 ccl = vap->va_vruncl[cnt]; 1457 1458 ddprintf(("ntfs_writentvattr_plain: " \ 1459 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1460 (u_int32_t) left, (u_int32_t) ccn, \ 1461 (u_int32_t) ccl, (u_int32_t) off)); 1462 1463 if (ntfs_cntob(ccl) < off) { 1464 off -= ntfs_cntob(ccl); 1465 cnt++; 1466 continue; 1467 } 1468 if (!ccn && ip->i_number != NTFS_BOOTINO) 1469 continue; /* XXX */ 1470 1471 ccl -= ntfs_btocn(off); 1472 cn = ccn + ntfs_btocn(off); 1473 off = ntfs_btocnoff(off); 1474 1475 while (left && ccl) { 1476 /* 1477 * Always read and write single clusters at a time - 1478 * we need to avoid requesting differently-sized 1479 * blocks at the same disk offsets to avoid 1480 * confusing the buffer cache. 1481 */ 1482 tocopy = MIN(left, ntfs_cntob(1) - off); 1483 cl = ntfs_btocl(tocopy + off); 1484 KASSERT(cl == 1 && tocopy <= ntfs_cntob(1), 1485 ("single cluster limit mistake")); 1486 ddprintf(("ntfs_writentvattr_plain: write: " \ 1487 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1488 (u_int32_t) cn, (u_int32_t) cl, 1489 (u_int32_t) off, (u_int32_t) tocopy, 1490 (u_int32_t) left)); 1491 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1492 { 1493 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1494 ntfs_cntob(cl), 0, 0, 0); 1495 clrbuf(bp); 1496 } else { 1497 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1498 ntfs_cntob(cl), NOCRED, &bp); 1499 if (error) { 1500 brelse(bp); 1501 return (error); 1502 } 1503 } 1504 if (uio) 1505 uiomove(bp->b_data + off, tocopy, uio); 1506 else 1507 memcpy(bp->b_data + off, data, tocopy); 1508 bawrite(bp); 1509 data = data + tocopy; 1510 *initp += tocopy; 1511 off = 0; 1512 left -= tocopy; 1513 cn += cl; 1514 ccl -= cl; 1515 } 1516 } 1517 1518 if (left) { 1519 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1520 error = EINVAL; 1521 } 1522 1523 return (error); 1524} 1525 1526/* 1527 * This is one of read routines. 1528 * 1529 * ntnode should be locked. 1530 */ 1531int 1532ntfs_readntvattr_plain( 1533 struct ntfsmount * ntmp, 1534 struct ntnode * ip, 1535 struct ntvattr * vap, 1536 off_t roff, 1537 size_t rsize, 1538 void *rdata, 1539 size_t * initp, 1540 struct uio *uio) 1541{ 1542 int error = 0; 1543 off_t off; 1544 1545 *initp = 0; 1546 if (vap->va_flag & NTFS_AF_INRUN) { 1547 int cnt; 1548 cn_t ccn, ccl, cn, left, cl; 1549 caddr_t data = rdata; 1550 struct buf *bp; 1551 size_t tocopy; 1552 1553 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1554 vap->va_vruncnt)); 1555 1556 off = roff; 1557 left = rsize; 1558 ccl = 0; 1559 ccn = 0; 1560 cnt = 0; 1561 while (left && (cnt < vap->va_vruncnt)) { 1562 ccn = vap->va_vruncn[cnt]; 1563 ccl = vap->va_vruncl[cnt]; 1564 1565 ddprintf(("ntfs_readntvattr_plain: " \ 1566 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1567 (u_int32_t) left, (u_int32_t) ccn, \ 1568 (u_int32_t) ccl, (u_int32_t) off)); 1569 1570 if (ntfs_cntob(ccl) < off) { 1571 off -= ntfs_cntob(ccl); 1572 cnt++; 1573 continue; 1574 } 1575 if (ccn || ip->i_number == NTFS_BOOTINO) { 1576 ccl -= ntfs_btocn(off); 1577 cn = ccn + ntfs_btocn(off); 1578 off = ntfs_btocnoff(off); 1579 1580 while (left && ccl) { 1581 /* 1582 * Always read single clusters at a 1583 * time - we need to avoid reading 1584 * differently-sized blocks at the 1585 * same disk offsets to avoid 1586 * confusing the buffer cache. 1587 */ 1588 tocopy = MIN(left, 1589 ntfs_cntob(1) - off); 1590 cl = ntfs_btocl(tocopy + off); 1591 KASSERT(cl == 1 && 1592 tocopy <= ntfs_cntob(1), 1593 ("single cluster limit mistake")); 1594 1595 ddprintf(("ntfs_readntvattr_plain: " \ 1596 "read: cn: 0x%x cl: %d, " \ 1597 "off: %d len: %d, left: %d\n", 1598 (u_int32_t) cn, 1599 (u_int32_t) cl, 1600 (u_int32_t) off, 1601 (u_int32_t) tocopy, 1602 (u_int32_t) left)); 1603 error = bread(ntmp->ntm_devvp, 1604 ntfs_cntobn(cn), 1605 ntfs_cntob(cl), 1606 NOCRED, &bp); 1607 if (error) { 1608 brelse(bp); 1609 return (error); 1610 } 1611 if (uio) { 1612 uiomove(bp->b_data + off, 1613 tocopy, uio); 1614 } else { 1615 memcpy(data, bp->b_data + off, 1616 tocopy); 1617 } 1618 brelse(bp); 1619 data = data + tocopy; 1620 *initp += tocopy; 1621 off = 0; 1622 left -= tocopy; 1623 cn += cl; 1624 ccl -= cl; 1625 } 1626 } else { 1627 tocopy = MIN(left, ntfs_cntob(ccl) - off); 1628 ddprintf(("ntfs_readntvattr_plain: " 1629 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1630 " len: %d, left: %d\n", 1631 (u_int32_t) ccn, (u_int32_t) ccl, 1632 (u_int32_t) off, (u_int32_t) tocopy, 1633 (u_int32_t) left)); 1634 left -= tocopy; 1635 off = 0; 1636 if (uio) { 1637 size_t remains = tocopy; 1638 for(; remains; remains--) 1639 uiomove("", 1, uio); 1640 } else 1641 bzero(data, tocopy); 1642 data = data + tocopy; 1643 } 1644 cnt++; 1645 } 1646 if (left) { 1647 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1648 error = E2BIG; 1649 } 1650 } else { 1651 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1652 if (uio) 1653 uiomove(vap->va_datap + roff, rsize, uio); 1654 else 1655 memcpy(rdata, vap->va_datap + roff, rsize); 1656 *initp += rsize; 1657 } 1658 1659 return (error); 1660} 1661 1662/* 1663 * This is one of read routines. 1664 */ 1665int 1666ntfs_readattr_plain( 1667 struct ntfsmount * ntmp, 1668 struct ntnode * ip, 1669 u_int32_t attrnum, 1670 char *attrname, 1671 off_t roff, 1672 size_t rsize, 1673 void *rdata, 1674 size_t * initp, 1675 struct uio *uio) 1676{ 1677 size_t init; 1678 int error = 0; 1679 off_t off = roff, left = rsize, toread; 1680 caddr_t data = rdata; 1681 struct ntvattr *vap; 1682 *initp = 0; 1683 1684 while (left) { 1685 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1686 ntfs_btocn(off), &vap); 1687 if (error) 1688 return (error); 1689 toread = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1690 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1691 (u_int32_t) off, (u_int32_t) toread, 1692 (u_int32_t) vap->va_vcnstart, 1693 (u_int32_t) vap->va_vcnend)); 1694 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1695 off - ntfs_cntob(vap->va_vcnstart), 1696 toread, data, &init, uio); 1697 if (error) { 1698 printf("ntfs_readattr_plain: " \ 1699 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1700 (u_int32_t) off, (u_int32_t) toread); 1701 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1702 (u_int32_t) vap->va_vcnstart, 1703 (u_int32_t) vap->va_vcnend); 1704 ntfs_ntvattrrele(vap); 1705 break; 1706 } 1707 ntfs_ntvattrrele(vap); 1708 left -= toread; 1709 off += toread; 1710 data = data + toread; 1711 *initp += init; 1712 } 1713 1714 return (error); 1715} 1716 1717/* 1718 * This is one of read routines. 1719 */ 1720int 1721ntfs_readattr( 1722 struct ntfsmount * ntmp, 1723 struct ntnode * ip, 1724 u_int32_t attrnum, 1725 char *attrname, 1726 off_t roff, 1727 size_t rsize, 1728 void *rdata, 1729 struct uio *uio) 1730{ 1731 int error = 0; 1732 struct ntvattr *vap; 1733 size_t init; 1734 1735 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1736 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1737 1738 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1739 if (error) 1740 return (error); 1741 1742 if ((roff > vap->va_datalen) || 1743 (roff + rsize > vap->va_datalen)) { 1744 ddprintf(("ntfs_readattr: offset too big\n")); 1745 ntfs_ntvattrrele(vap); 1746 return (E2BIG); 1747 } 1748 if (vap->va_compression && vap->va_compressalg) { 1749 u_int8_t *cup; 1750 u_int8_t *uup; 1751 off_t off = roff, left = rsize, tocopy; 1752 caddr_t data = rdata; 1753 cn_t cn; 1754 1755 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1756 vap->va_compressalg)); 1757 1758 cup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1759 M_NTFSDECOMP, M_WAITOK); 1760 uup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1761 M_NTFSDECOMP, M_WAITOK); 1762 1763 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1764 off = roff - ntfs_cntob(cn); 1765 1766 while (left) { 1767 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1768 attrname, ntfs_cntob(cn), 1769 ntfs_cntob(NTFS_COMPUNIT_CL), 1770 cup, &init, NULL); 1771 if (error) 1772 break; 1773 1774 tocopy = MIN(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1775 1776 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1777 if (uio) 1778 uiomove(cup + off, tocopy, uio); 1779 else 1780 memcpy(data, cup + off, tocopy); 1781 } else if (init == 0) { 1782 if (uio) { 1783 size_t remains = tocopy; 1784 for(; remains; remains--) 1785 uiomove("", 1, uio); 1786 } 1787 else 1788 bzero(data, tocopy); 1789 } else { 1790 error = ntfs_uncompunit(ntmp, uup, cup); 1791 if (error) 1792 break; 1793 if (uio) 1794 uiomove(uup + off, tocopy, uio); 1795 else 1796 memcpy(data, uup + off, tocopy); 1797 } 1798 1799 left -= tocopy; 1800 data = data + tocopy; 1801 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1802 cn += NTFS_COMPUNIT_CL; 1803 } 1804 1805 free(uup, M_NTFSDECOMP); 1806 free(cup, M_NTFSDECOMP); 1807 } else 1808 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1809 roff, rsize, rdata, &init, uio); 1810 ntfs_ntvattrrele(vap); 1811 return (error); 1812} 1813 1814#if 0 1815int 1816ntfs_parserun( 1817 cn_t * cn, 1818 cn_t * cl, 1819 u_int8_t * run, 1820 u_long len, 1821 u_long *off) 1822{ 1823 u_int8_t sz; 1824 int i; 1825 1826 if (NULL == run) { 1827 printf("ntfs_parsetun: run == NULL\n"); 1828 return (EINVAL); 1829 } 1830 sz = run[(*off)++]; 1831 if (0 == sz) { 1832 printf("ntfs_parserun: trying to go out of run\n"); 1833 return (E2BIG); 1834 } 1835 *cl = 0; 1836 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1837 printf("ntfs_parserun: " \ 1838 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1839 sz, len, *off); 1840 return (EINVAL); 1841 } 1842 for (i = 0; i < (sz & 0xF); i++) 1843 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1844 1845 sz >>= 4; 1846 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1847 printf("ntfs_parserun: " \ 1848 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1849 sz, len, *off); 1850 return (EINVAL); 1851 } 1852 for (i = 0; i < (sz & 0xF); i++) 1853 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1854 1855 return (0); 1856} 1857#endif 1858 1859/* 1860 * Process fixup routine on given buffer. 1861 */ 1862int 1863ntfs_procfixups( 1864 struct ntfsmount * ntmp, 1865 u_int32_t magic, 1866 caddr_t buf, 1867 size_t len) 1868{ 1869 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1870 int i; 1871 u_int16_t fixup; 1872 u_int16_t *fxp; 1873 u_int16_t *cfxp; 1874 1875 if (fhp->fh_magic != magic) { 1876 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1877 fhp->fh_magic, magic); 1878 return (EINVAL); 1879 } 1880 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1881 printf("ntfs_procfixups: " \ 1882 "bad fixups number: %d for %ld bytes block\n", 1883 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1884 return (EINVAL); 1885 } 1886 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1887 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1888 return (EINVAL); 1889 } 1890 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1891 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1892 fixup = *fxp++; 1893 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1894 if (*cfxp != fixup) { 1895 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1896 return (EINVAL); 1897 } 1898 *cfxp = *fxp; 1899 cfxp = (u_int16_t *) ((caddr_t) cfxp + ntmp->ntm_bps); 1900 } 1901 return (0); 1902} 1903 1904#if 0 1905int 1906ntfs_runtocn( 1907 cn_t * cn, 1908 struct ntfsmount * ntmp, 1909 u_int8_t * run, 1910 u_long len, 1911 cn_t vcn) 1912{ 1913 cn_t ccn = 0; 1914 cn_t ccl = 0; 1915 u_long off = 0; 1916 int error = 0; 1917 1918#if NTFS_DEBUG 1919 int i; 1920 printf("ntfs_runtocn: run: %p, %ld bytes, vcn:%ld\n", 1921 run, len, (u_long) vcn); 1922 printf("ntfs_runtocn: run: "); 1923 for (i = 0; i < len; i++) 1924 printf("0x%02x ", run[i]); 1925 printf("\n"); 1926#endif 1927 1928 if (NULL == run) { 1929 printf("ntfs_runtocn: run == NULL\n"); 1930 return (EINVAL); 1931 } 1932 do { 1933 if (run[off] == 0) { 1934 printf("ntfs_runtocn: vcn too big\n"); 1935 return (E2BIG); 1936 } 1937 vcn -= ccl; 1938 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1939 if (error) { 1940 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1941 return (error); 1942 } 1943 } while (ccl <= vcn); 1944 *cn = ccn + vcn; 1945 return (0); 1946} 1947#endif 1948 1949/* 1950 * this initializes toupper table & dependant variables to be ready for 1951 * later work 1952 */ 1953void 1954ntfs_toupper_init() 1955{ 1956 ntfs_toupper_tab = (wchar *) NULL; 1957 lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0); 1958 ntfs_toupper_usecount = 0; 1959} 1960 1961void 1962ntfs_toupper_destroy(void) 1963{ 1964 1965 lockdestroy(&ntfs_toupper_lock); 1966} 1967 1968/* 1969 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1970 * otherwise read the data from the filesystem we are currently mounting 1971 */ 1972int 1973ntfs_toupper_use(mp, ntmp) 1974 struct mount *mp; 1975 struct ntfsmount *ntmp; 1976{ 1977 int error = 0; 1978 struct vnode *vp; 1979 1980 /* get exclusive access */ 1981 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1982 1983 /* only read the translation data from a file if it hasn't been 1984 * read already */ 1985 if (ntfs_toupper_tab) 1986 goto out; 1987 1988 /* 1989 * Read in Unicode lowercase -> uppercase translation file. 1990 * XXX for now, just the first 256 entries are used anyway, 1991 * so don't bother reading more 1992 */ 1993 ntfs_toupper_tab = malloc(65536 * sizeof(wchar), 1994 M_NTFSRDATA, M_WAITOK); 1995 1996 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, LK_EXCLUSIVE, &vp))) 1997 goto out; 1998 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1999 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 2000 vput(vp); 2001 2002 out: 2003 ntfs_toupper_usecount++; 2004 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2005 return (error); 2006} 2007 2008/* 2009 * lower the use count and if it reaches zero, free the memory 2010 * tied by toupper table 2011 */ 2012void 2013ntfs_toupper_unuse() 2014{ 2015 /* get exclusive access */ 2016 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 2017 2018 ntfs_toupper_usecount--; 2019 if (ntfs_toupper_usecount == 0) { 2020 free(ntfs_toupper_tab, M_NTFSRDATA); 2021 ntfs_toupper_tab = NULL; 2022 } 2023#ifdef DIAGNOSTIC 2024 else if (ntfs_toupper_usecount < 0) { 2025 panic("ntfs_toupper_unuse(): use count negative: %d\n", 2026 ntfs_toupper_usecount); 2027 } 2028#endif 2029 2030 /* release the lock */ 2031 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2032} 2033 2034int 2035ntfs_u28_init( 2036 struct ntfsmount *ntmp, 2037 wchar *u2w, 2038 char *cs_local, 2039 char *cs_ntfs) 2040{ 2041 char ** u28; 2042 int i, j, h, l; 2043 2044 if (ntfs_iconv && cs_local) { 2045 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 2046 return (0); 2047 } 2048 2049 u28 = malloc(256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2050 2051 for (i=0; i<256; i++) { 2052 h = (u2w[i] >> 8) & 0xFF; 2053 l = (u2w[i]) &0xFF; 2054 2055 if (u28[h] == NULL) { 2056 u28[h] = malloc(256 * sizeof(char), M_TEMP, M_WAITOK); 2057 for (j=0; j<256; j++) 2058 u28[h][j] = '_'; 2059 } 2060 2061 u28[h][l] = i & 0xFF; 2062 } 2063 2064 ntmp->ntm_u28 = u28; 2065 2066 return (0); 2067} 2068 2069int 2070ntfs_u28_uninit(struct ntfsmount *ntmp) 2071{ 2072 char ** u28; 2073 int i; 2074 2075 if (ntmp->ntm_u28 == NULL) { 2076 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2077 ntfs_iconv->close(ntmp->ntm_ic_u2l); 2078 } 2079 return (0); 2080 } 2081 2082 u28 = ntmp->ntm_u28; 2083 2084 for (i=0; i<256; i++) 2085 if (u28[i] != NULL) 2086 free(u28[i], M_TEMP); 2087 2088 free(u28, M_TEMP); 2089 2090 return (0); 2091} 2092 2093int 2094ntfs_82u_init( 2095 struct ntfsmount *ntmp, 2096 char *cs_local, 2097 char *cs_ntfs) 2098{ 2099 wchar * _82u; 2100 int i; 2101 2102 if (ntfs_iconv && cs_local) { 2103 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2104 return (0); 2105 } 2106 2107 _82u = malloc(256 * sizeof(wchar), M_TEMP, M_WAITOK); 2108 2109 for (i=0; i<256; i++) 2110 _82u[i] = i; 2111 2112 ntmp->ntm_82u = _82u; 2113 2114 return (0); 2115} 2116 2117int 2118ntfs_82u_uninit(struct ntfsmount *ntmp) 2119{ 2120 2121 if (ntmp->ntm_82u == NULL) { 2122 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2123 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2124 } 2125 return (0); 2126 } 2127 2128 free(ntmp->ntm_82u, M_TEMP); 2129 return (0); 2130} 2131 2132/* 2133 * maps the Unicode char to 8bit equivalent 2134 * XXX currently only gets lower 8bit from the Unicode char 2135 * and substitutes a '_' for it if the result would be '\0'; 2136 * something better has to be definitely though out 2137 */ 2138wchar 2139ntfs_u28( 2140 struct ntfsmount *ntmp, 2141 wchar wc) 2142{ 2143 char *p, *outp, inbuf[3], outbuf[3]; 2144 size_t ilen, olen; 2145 2146 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2147 ilen = olen = 2; 2148 2149 inbuf[0] = (char)(wc>>8); 2150 inbuf[1] = (char)wc; 2151 inbuf[2] = '\0'; 2152 p = inbuf; 2153 outp = outbuf; 2154 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen, 2155 &outp, &olen); 2156 if (olen == 1) { 2157 return ((wchar)(outbuf[0]&0xFF)); 2158 } else if (olen == 0) { 2159 return ((wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF))); 2160 } 2161 return ('?'); 2162 } 2163 2164 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2165 if (p == NULL) 2166 return ('_'); 2167 return (p[wc&0xFF]&0xFF); 2168} 2169 2170wchar 2171ntfs_82u( 2172 struct ntfsmount *ntmp, 2173 wchar wc, 2174 int *len) 2175{ 2176 char *p, *outp, inbuf[3], outbuf[3]; 2177 wchar uc; 2178 size_t ilen, olen; 2179 2180 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2181 ilen = (size_t)*len; 2182 olen = 2; 2183 2184 inbuf[0] = (char)(wc>>8); 2185 inbuf[1] = (char)wc; 2186 inbuf[2] = '\0'; 2187 p = inbuf; 2188 outp = outbuf; 2189 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, (const char **)&p, &ilen, 2190 &outp, &olen); 2191 *len -= (int)ilen; 2192 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2193 2194 return (uc); 2195 } 2196 2197 if (ntmp->ntm_82u != NULL) 2198 return (ntmp->ntm_82u[wc&0xFF]); 2199 2200 return ('?'); 2201} 2202 2203