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sys/fs/ntfs/ntfs_subr.c
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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: releng/9.0/sys/fs/ntfs/ntfs_subr.c 200214 2009-12-07 15:15:08Z guido $ 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 54 MALLOC_DEFINE(M_NTFSNTVATTR, "ntfs_vattr", "NTFS file attribute information"); 55 MALLOC_DEFINE(M_NTFSRDATA, "ntfsd_resdata", "NTFS resident data"); 56 MALLOC_DEFINE(M_NTFSRUN, "ntfs_vrun", "NTFS vrun storage"); 57 MALLOC_DEFINE(M_NTFSDECOMP, "ntfs_decomp", "NTFS decompression temporary"); 58 59 static int ntfs_ntlookupattr(struct ntfsmount *, const char *, int, int *, char **); 60 static int ntfs_findvattr(struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t); 61 static int ntfs_uastricmp(struct ntfsmount *, const wchar *, size_t, const char *, size_t); 62 static 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 */ 66 static wchar *ntfs_toupper_tab; 67 #define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)]) 68 static struct lock ntfs_toupper_lock; 69 static signed int ntfs_toupper_usecount; 70 71 struct 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 */ 81 int 82 ntfs_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 */ 96 static int 97 ntfs_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 */ 148 int 149 ntfs_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)); 248 out: 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 */ 258 int 259 ntfs_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 bn *= ntmp->ntm_multiplier; 282 283 error = bread(ntmp->ntm_devvp, 284 bn, ntfs_bntob(ntmp->ntm_bpmftrec), 285 NOCRED, &bp); 286 if (error) { 287 printf("ntfs_loadntnode: BREAD FAILED\n"); 288 brelse(bp); 289 goto out; 290 } 291 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec)); 292 bqrelse(bp); 293 } else { 294 struct vnode *vp; 295 296 vp = ntmp->ntm_sysvn[NTFS_MFTINO]; 297 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 298 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec), 299 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL); 300 if (error) { 301 printf("ntfs_loadntnode: ntfs_readattr failed\n"); 302 goto out; 303 } 304 } 305 306 /* Check if magic and fixups are correct */ 307 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp, 308 ntfs_bntob(ntmp->ntm_bpmftrec)); 309 if (error) { 310 printf("ntfs_loadntnode: BAD MFT RECORD %d\n", 311 (u_int32_t) ip->i_number); 312 goto out; 313 } 314 315 dprintf(("ntfs_loadntnode: load attrs for ino: %d\n",ip->i_number)); 316 off = mfrp->fr_attroff; 317 ap = (struct attr *) ((caddr_t)mfrp + off); 318 319 LIST_INIT(&ip->i_valist); 320 321 while (ap->a_hdr.a_type != -1) { 322 error = ntfs_attrtontvattr(ntmp, &nvap, ap); 323 if (error) 324 break; 325 nvap->va_ip = ip; 326 327 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list); 328 329 off += ap->a_hdr.reclen; 330 ap = (struct attr *) ((caddr_t)mfrp + off); 331 } 332 if (error) { 333 printf("ntfs_loadntnode: failed to load attr ino: %d\n", 334 ip->i_number); 335 goto out; 336 } 337 338 ip->i_mainrec = mfrp->fr_mainrec; 339 ip->i_nlink = mfrp->fr_nlink; 340 ip->i_frflag = mfrp->fr_flags; 341 342 ip->i_flag |= IN_LOADED; 343 344 out: 345 free(mfrp, M_TEMP); 346 return (error); 347 } 348 349 /* 350 * Routine locks ntnode and increase usecount, just opposite of 351 * ntfs_ntput(). 352 */ 353 int 354 ntfs_ntget(ip) 355 struct ntnode *ip; 356 { 357 dprintf(("ntfs_ntget: get ntnode %d: %p, usecount: %d\n", 358 ip->i_number, ip, ip->i_usecount)); 359 360 mtx_lock(&ip->i_interlock); 361 ip->i_usecount++; 362 lockmgr(&ip->i_lock, LK_EXCLUSIVE | LK_INTERLOCK, &ip->i_interlock); 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 */ 374 int 375 ntfs_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)); 394 395 ip = malloc(sizeof(struct ntnode), M_NTFSNTNODE, 396 M_WAITOK | M_ZERO); 397 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 398 399 /* Generic initialization */ 400 ip->i_devvp = ntmp->ntm_devvp; 401 ip->i_dev = ntmp->ntm_devvp->v_rdev; 402 ip->i_number = ino; 403 ip->i_mp = ntmp; 404 405 LIST_INIT(&ip->i_fnlist); 406 VREF(ip->i_devvp); 407 408 /* init lock and lock the newborn ntnode */ 409 lockinit(&ip->i_lock, PINOD, "ntnode", 0, 0); 410 mtx_init(&ip->i_interlock, "ntnode interlock", NULL, MTX_DEF); 411 ntfs_ntget(ip); 412 413 ntfs_nthashins(ip); 414 415 lockmgr(&ntfs_hashlock, LK_RELEASE, NULL); 416 417 *ipp = ip; 418 419 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 420 ino, ip, ip->i_usecount)); 421 422 return (0); 423 } 424 425 /* 426 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 427 * deallocate ntnode. 428 * 429 * ntnode should be locked on entry, and unlocked on return. 430 */ 431 void 432 ntfs_ntput(ip) 433 struct ntnode *ip; 434 { 435 struct ntvattr *vap; 436 437 dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n", 438 ip->i_number, ip, ip->i_usecount)); 439 440 mtx_lock(&ip->i_interlock); 441 ip->i_usecount--; 442 443 #ifdef DIAGNOSTIC 444 if (ip->i_usecount < 0) { 445 panic("ntfs_ntput: ino: %d usecount: %d \n", 446 ip->i_number,ip->i_usecount); 447 } 448 #endif 449 450 if (ip->i_usecount > 0) { 451 lockmgr(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock); 452 return; 453 } 454 455 dprintf(("ntfs_ntput: deallocating ntnode: %d\n", ip->i_number)); 456 457 if (LIST_FIRST(&ip->i_fnlist)) 458 panic("ntfs_ntput: ntnode has fnodes\n"); 459 460 ntfs_nthashrem(ip); 461 462 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 463 LIST_REMOVE(vap,va_list); 464 ntfs_freentvattr(vap); 465 } 466 lockmgr(&ip->i_lock, LK_RELEASE | LK_INTERLOCK, &ip->i_interlock); 467 mtx_destroy(&ip->i_interlock); 468 lockdestroy(&ip->i_lock); 469 vrele(ip->i_devvp); 470 free(ip, M_NTFSNTNODE); 471 } 472 473 /* 474 * increment usecount of ntnode 475 */ 476 void 477 ntfs_ntref(ip) 478 struct ntnode *ip; 479 { 480 mtx_lock(&ip->i_interlock); 481 ip->i_usecount++; 482 mtx_unlock(&ip->i_interlock); 483 484 dprintf(("ntfs_ntref: ino %d, usecount: %d\n", 485 ip->i_number, ip->i_usecount)); 486 487 } 488 489 /* 490 * Decrement usecount of ntnode. 491 */ 492 void 493 ntfs_ntrele(ip) 494 struct ntnode *ip; 495 { 496 dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n", 497 ip->i_number, ip, ip->i_usecount)); 498 499 mtx_lock(&ip->i_interlock); 500 ip->i_usecount--; 501 502 if (ip->i_usecount < 0) 503 panic("ntfs_ntrele: ino: %d usecount: %d \n", 504 ip->i_number,ip->i_usecount); 505 mtx_unlock(&ip->i_interlock); 506 } 507 508 /* 509 * Deallocate all memory allocated for ntvattr 510 */ 511 void 512 ntfs_freentvattr(vap) 513 struct ntvattr * vap; 514 { 515 if (vap->va_flag & NTFS_AF_INRUN) { 516 if (vap->va_vruncn) 517 free(vap->va_vruncn, M_NTFSRUN); 518 if (vap->va_vruncl) 519 free(vap->va_vruncl, M_NTFSRUN); 520 } else { 521 if (vap->va_datap) 522 free(vap->va_datap, M_NTFSRDATA); 523 } 524 free(vap, M_NTFSNTVATTR); 525 } 526 527 /* 528 * Convert disk image of attribute into ntvattr structure, 529 * runs are expanded also. 530 */ 531 int 532 ntfs_attrtontvattr( 533 struct ntfsmount * ntmp, 534 struct ntvattr ** rvapp, 535 struct attr * rap) 536 { 537 int error, i; 538 struct ntvattr *vap; 539 540 error = 0; 541 *rvapp = NULL; 542 543 vap = malloc(sizeof(struct ntvattr), 544 M_NTFSNTVATTR, M_WAITOK | M_ZERO); 545 vap->va_ip = NULL; 546 vap->va_flag = rap->a_hdr.a_flag; 547 vap->va_type = rap->a_hdr.a_type; 548 vap->va_compression = rap->a_hdr.a_compression; 549 vap->va_index = rap->a_hdr.a_index; 550 551 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 552 553 vap->va_namelen = rap->a_hdr.a_namelen; 554 if (rap->a_hdr.a_namelen) { 555 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 556 ddprintf((", name:[")); 557 for (i = 0; i < vap->va_namelen; i++) { 558 vap->va_name[i] = unp[i]; 559 ddprintf(("%c", vap->va_name[i])); 560 } 561 ddprintf(("]")); 562 } 563 if (vap->va_flag & NTFS_AF_INRUN) { 564 ddprintf((", nonres.")); 565 vap->va_datalen = rap->a_nr.a_datalen; 566 vap->va_allocated = rap->a_nr.a_allocated; 567 vap->va_vcnstart = rap->a_nr.a_vcnstart; 568 vap->va_vcnend = rap->a_nr.a_vcnend; 569 vap->va_compressalg = rap->a_nr.a_compressalg; 570 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 571 &(vap->va_vruncnt), 572 (caddr_t) rap + rap->a_nr.a_dataoff); 573 } else { 574 vap->va_compressalg = 0; 575 ddprintf((", res.")); 576 vap->va_datalen = rap->a_r.a_datalen; 577 vap->va_allocated = rap->a_r.a_datalen; 578 vap->va_vcnstart = 0; 579 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 580 vap->va_datap = malloc(vap->va_datalen, 581 M_NTFSRDATA, M_WAITOK); 582 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 583 rap->a_r.a_datalen); 584 } 585 ddprintf((", len: %lld", vap->va_datalen)); 586 587 if (error) 588 free(vap, M_NTFSNTVATTR); 589 else 590 *rvapp = vap; 591 592 ddprintf(("\n")); 593 594 return (error); 595 } 596 597 /* 598 * Expand run into more utilizable and more memory eating format. 599 */ 600 int 601 ntfs_runtovrun( 602 cn_t ** rcnp, 603 cn_t ** rclp, 604 u_long * rcntp, 605 u_int8_t * run) 606 { 607 u_int32_t off; 608 u_int32_t sz, i; 609 cn_t *cn; 610 cn_t *cl; 611 u_long cnt; 612 cn_t prev; 613 cn_t tmp; 614 615 off = 0; 616 cnt = 0; 617 i = 0; 618 while (run[off]) { 619 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 620 cnt++; 621 } 622 cn = malloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 623 cl = malloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 624 625 off = 0; 626 cnt = 0; 627 prev = 0; 628 while (run[off]) { 629 630 sz = run[off++]; 631 cl[cnt] = 0; 632 633 for (i = 0; i < (sz & 0xF); i++) 634 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 635 636 sz >>= 4; 637 if (run[off + sz - 1] & 0x80) { 638 tmp = ((u_int64_t) - 1) << (sz << 3); 639 for (i = 0; i < sz; i++) 640 tmp |= (u_int64_t) run[off++] << (i << 3); 641 } else { 642 tmp = 0; 643 for (i = 0; i < sz; i++) 644 tmp |= (u_int64_t) run[off++] << (i << 3); 645 } 646 if (tmp) 647 prev = cn[cnt] = prev + tmp; 648 else 649 cn[cnt] = tmp; 650 651 cnt++; 652 } 653 *rcnp = cn; 654 *rclp = cl; 655 *rcntp = cnt; 656 return (0); 657 } 658 659 /* 660 * Compare unicode and ascii string case insens. 661 */ 662 static int 663 ntfs_uastricmp(ntmp, ustr, ustrlen, astr, astrlen) 664 struct ntfsmount *ntmp; 665 const wchar *ustr; 666 size_t ustrlen; 667 const char *astr; 668 size_t astrlen; 669 { 670 int len; 671 size_t i, j, mbstrlen = astrlen; 672 int res; 673 wchar wc; 674 675 if (ntmp->ntm_ic_l2u) { 676 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++, j++) { 677 if (j < astrlen -1) { 678 wc = (wchar)astr[j]<<8 | (astr[j+1]&0xFF); 679 len = 2; 680 } else { 681 wc = (wchar)astr[j]<<8 & 0xFF00; 682 len = 1; 683 } 684 res = ((int) NTFS_TOUPPER(ustr[i])) - 685 ((int)NTFS_TOUPPER(NTFS_82U(wc, &len))); 686 j += len - 1; 687 mbstrlen -= len - 1; 688 689 if (res) 690 return res; 691 } 692 } else { 693 /* 694 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 695 * symbols not covered by translation table 696 */ 697 for (i = 0; i < ustrlen && i < astrlen; i++) { 698 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 699 ((int)NTFS_TOUPPER(NTFS_82U((wchar)astr[i], &len))); 700 if (res) 701 return res; 702 } 703 } 704 return (ustrlen - mbstrlen); 705 } 706 707 /* 708 * Compare unicode and ascii string case sens. 709 */ 710 static int 711 ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 712 struct ntfsmount *ntmp; 713 const wchar *ustr; 714 size_t ustrlen; 715 const char *astr; 716 size_t astrlen; 717 { 718 char u, l; 719 size_t i, j, mbstrlen = astrlen; 720 int res; 721 wchar wc; 722 723 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, j++) { 724 res = 0; 725 wc = NTFS_U28(ustr[i]); 726 u = (char)(wc>>8); 727 l = (char)wc; 728 if (u != '\0' && j < astrlen -1) { 729 res = (int) (u - astr[j++]); 730 mbstrlen--; 731 } 732 res = (res<<8) + (int) (l - astr[j]); 733 if (res) 734 return res; 735 } 736 return (ustrlen - mbstrlen); 737 } 738 739 /* 740 * Search fnode in ntnode, if not found allocate and preinitialize. 741 * 742 * ntnode should be locked on entry. 743 */ 744 int 745 ntfs_fget( 746 struct ntfsmount *ntmp, 747 struct ntnode *ip, 748 int attrtype, 749 char *attrname, 750 struct fnode **fpp) 751 { 752 struct fnode *fp; 753 754 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 755 ip->i_number,attrtype, attrname?attrname:"")); 756 *fpp = NULL; 757 LIST_FOREACH(fp, &ip->i_fnlist, f_fnlist){ 758 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 759 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 760 761 if ((attrtype == fp->f_attrtype) && 762 ((!attrname && !fp->f_attrname) || 763 (attrname && fp->f_attrname && 764 !strcmp(attrname,fp->f_attrname)))){ 765 dprintf(("ntfs_fget: found existed: %p\n",fp)); 766 *fpp = fp; 767 } 768 } 769 770 if (*fpp) 771 return (0); 772 773 fp = malloc(sizeof(struct fnode), M_NTFSFNODE, 774 M_WAITOK | M_ZERO); 775 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 776 777 fp->f_ip = ip; 778 if (attrname) { 779 fp->f_flag |= FN_AATTRNAME; 780 fp->f_attrname = malloc(strlen(attrname)+1, M_TEMP, M_WAITOK); 781 strcpy(fp->f_attrname, attrname); 782 } else 783 fp->f_attrname = NULL; 784 fp->f_attrtype = attrtype; 785 786 ntfs_ntref(ip); 787 788 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 789 790 *fpp = fp; 791 792 return (0); 793 } 794 795 /* 796 * Deallocate fnode, remove it from ntnode's fnode list. 797 * 798 * ntnode should be locked. 799 */ 800 void 801 ntfs_frele( 802 struct fnode *fp) 803 { 804 struct ntnode *ip = FTONT(fp); 805 806 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 807 808 dprintf(("ntfs_frele: deallocating fnode\n")); 809 LIST_REMOVE(fp,f_fnlist); 810 if (fp->f_flag & FN_AATTRNAME) 811 free(fp->f_attrname, M_TEMP); 812 if (fp->f_dirblbuf) 813 free(fp->f_dirblbuf, M_NTFSDIR); 814 free(fp, M_NTFSFNODE); 815 ntfs_ntrele(ip); 816 } 817 818 /* 819 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 820 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 821 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 822 */ 823 static int 824 ntfs_ntlookupattr( 825 struct ntfsmount * ntmp, 826 const char * name, 827 int namelen, 828 int *attrtype, 829 char **attrname) 830 { 831 const char *sys; 832 size_t syslen, i; 833 struct ntvattrdef *adp; 834 835 if (namelen == 0) 836 return (0); 837 838 if (name[0] == '$') { 839 sys = name; 840 for (syslen = 0; syslen < namelen; syslen++) { 841 if(sys[syslen] == ':') { 842 name++; 843 namelen--; 844 break; 845 } 846 } 847 name += syslen; 848 namelen -= syslen; 849 850 adp = ntmp->ntm_ad; 851 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 852 if (syslen != adp->ad_namelen || 853 strncmp(sys, adp->ad_name, syslen) != 0) 854 continue; 855 856 *attrtype = adp->ad_type; 857 goto out; 858 } 859 return (ENOENT); 860 } else 861 *attrtype = NTFS_A_DATA; 862 863 out: 864 if (namelen) { 865 (*attrname) = malloc(namelen, M_TEMP, M_WAITOK); 866 memcpy((*attrname), name, namelen); 867 (*attrname)[namelen] = '\0'; 868 } 869 870 return (0); 871 } 872 873 /* 874 * Lookup specifed node for filename, matching cnp, 875 * return fnode filled. 876 */ 877 int 878 ntfs_ntlookupfile( 879 struct ntfsmount * ntmp, 880 struct vnode * vp, 881 struct componentname * cnp, 882 struct vnode ** vpp) 883 { 884 struct fnode *fp = VTOF(vp); 885 struct ntnode *ip = FTONT(fp); 886 struct ntvattr *vap; /* Root attribute */ 887 cn_t cn; /* VCN in current attribute */ 888 caddr_t rdbuf; /* Buffer to read directory's blocks */ 889 u_int32_t blsize; 890 u_int64_t rdsize; /* Length of data to read from current block */ 891 struct attr_indexentry *iep; 892 int error, res, anamelen, fnamelen; 893 const char *fname,*aname; 894 u_int32_t aoff; 895 int attrtype = NTFS_A_DATA; 896 char *attrname = NULL; 897 struct fnode *nfp; 898 struct vnode *nvp; 899 enum vtype f_type; 900 901 error = ntfs_ntget(ip); 902 if (error) 903 return (error); 904 905 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 906 if (error || (vap->va_flag & NTFS_AF_INRUN)) 907 return (ENOTDIR); 908 909 blsize = vap->va_a_iroot->ir_size; 910 rdsize = vap->va_datalen; 911 912 /* 913 * Divide file name into: foofilefoofilefoofile[:attrspec] 914 * Store like this: fname:fnamelen [aname:anamelen] 915 */ 916 fname = cnp->cn_nameptr; 917 aname = NULL; 918 anamelen = 0; 919 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 920 if(fname[fnamelen] == ':') { 921 aname = fname + fnamelen + 1; 922 anamelen = cnp->cn_namelen - fnamelen - 1; 923 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 924 fname, fnamelen, aname, anamelen)); 925 break; 926 } 927 928 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %jd\n", blsize, rdsize)); 929 930 rdbuf = malloc(blsize, M_TEMP, M_WAITOK); 931 932 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 933 0, rdsize, rdbuf, NULL); 934 if (error) 935 goto fail; 936 937 aoff = sizeof(struct attr_indexroot); 938 939 do { 940 iep = (struct attr_indexentry *) (rdbuf + aoff); 941 942 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 943 aoff += iep->reclen, 944 iep = (struct attr_indexentry *) (rdbuf + aoff)) 945 { 946 ddprintf(("scan: %d, %d\n", 947 (u_int32_t) iep->ie_number, 948 (u_int32_t) iep->ie_fnametype)); 949 950 /* check the name - the case-insensitible check 951 * has to come first, to break from this for loop 952 * if needed, so we can dive correctly */ 953 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 954 fname, fnamelen); 955 if (res > 0) break; 956 if (res < 0) continue; 957 958 if (iep->ie_fnametype == 0 || 959 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 960 { 961 res = NTFS_UASTRCMP(iep->ie_fname, 962 iep->ie_fnamelen, fname, fnamelen); 963 if (res != 0) continue; 964 } 965 966 if (aname) { 967 error = ntfs_ntlookupattr(ntmp, 968 aname, anamelen, 969 &attrtype, &attrname); 970 if (error) 971 goto fail; 972 } 973 974 /* Check if we've found ourself */ 975 if ((iep->ie_number == ip->i_number) && 976 (attrtype == fp->f_attrtype) && 977 ((!attrname && !fp->f_attrname) || 978 (attrname && fp->f_attrname && 979 !strcmp(attrname, fp->f_attrname)))) 980 { 981 VREF(vp); 982 *vpp = vp; 983 error = 0; 984 goto fail; 985 } 986 987 /* vget node, but don't load it */ 988 error = ntfs_vgetex(ntmp->ntm_mountp, 989 iep->ie_number, attrtype, attrname, 990 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 991 curthread, &nvp); 992 993 /* free the buffer returned by ntfs_ntlookupattr() */ 994 if (attrname) { 995 free(attrname, M_TEMP); 996 attrname = NULL; 997 } 998 999 if (error) 1000 goto fail; 1001 1002 nfp = VTOF(nvp); 1003 1004 if (nfp->f_flag & FN_VALID) { 1005 *vpp = nvp; 1006 goto fail; 1007 } 1008 1009 nfp->f_fflag = iep->ie_fflag; 1010 nfp->f_pnumber = iep->ie_fpnumber; 1011 nfp->f_times = iep->ie_ftimes; 1012 1013 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 1014 (nfp->f_attrtype == NTFS_A_DATA) && 1015 (nfp->f_attrname == NULL)) 1016 f_type = VDIR; 1017 else 1018 f_type = VREG; 1019 1020 nvp->v_type = f_type; 1021 1022 if ((nfp->f_attrtype == NTFS_A_DATA) && 1023 (nfp->f_attrname == NULL)) 1024 { 1025 /* Opening default attribute */ 1026 nfp->f_size = iep->ie_fsize; 1027 nfp->f_allocated = iep->ie_fallocated; 1028 nfp->f_flag |= FN_PRELOADED; 1029 } else { 1030 error = ntfs_filesize(ntmp, nfp, 1031 &nfp->f_size, &nfp->f_allocated); 1032 if (error) { 1033 vput(nvp); 1034 goto fail; 1035 } 1036 } 1037 1038 nfp->f_flag &= ~FN_VALID; 1039 *vpp = nvp; 1040 goto fail; 1041 } 1042 1043 /* Dive if possible */ 1044 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1045 dprintf(("ntfs_ntlookupfile: diving\n")); 1046 1047 cn = *(cn_t *) (rdbuf + aoff + 1048 iep->reclen - sizeof(cn_t)); 1049 rdsize = blsize; 1050 1051 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1052 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1053 if (error) 1054 goto fail; 1055 1056 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1057 rdbuf, rdsize); 1058 if (error) 1059 goto fail; 1060 1061 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1062 0x18); 1063 } else { 1064 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1065 error = ENOENT; 1066 break; 1067 } 1068 } while (1); 1069 1070 dprintf(("finish\n")); 1071 1072 fail: 1073 if (attrname) free(attrname, M_TEMP); 1074 ntfs_ntvattrrele(vap); 1075 ntfs_ntput(ip); 1076 free(rdbuf, M_TEMP); 1077 return (error); 1078 } 1079 1080 /* 1081 * Check if name type is permitted to show. 1082 */ 1083 int 1084 ntfs_isnamepermitted( 1085 struct ntfsmount * ntmp, 1086 struct attr_indexentry * iep) 1087 { 1088 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1089 return 1; 1090 1091 switch (iep->ie_fnametype) { 1092 case 2: 1093 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n")); 1094 return 0; 1095 case 0: case 1: case 3: 1096 return 1; 1097 default: 1098 printf("ntfs_isnamepermitted: " \ 1099 "WARNING! Unknown file name type: %d\n", 1100 iep->ie_fnametype); 1101 break; 1102 } 1103 return 0; 1104 } 1105 1106 /* 1107 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1108 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1109 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1110 * fnode, so we can skip toward record number num almost immediatly. 1111 * Anyway this is rather slow routine. The problem is that we don't know 1112 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1113 */ 1114 int 1115 ntfs_ntreaddir( 1116 struct ntfsmount * ntmp, 1117 struct fnode * fp, 1118 u_int32_t num, 1119 struct attr_indexentry ** riepp) 1120 { 1121 struct ntnode *ip = FTONT(fp); 1122 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1123 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1124 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1125 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1126 u_int8_t *bmp = NULL; /* Bitmap */ 1127 u_int32_t blsize; /* Index allocation size (2048) */ 1128 u_int32_t rdsize; /* Length of data to read */ 1129 u_int32_t attrnum; /* Current attribute type */ 1130 u_int32_t cpbl = 1; /* Clusters per directory block */ 1131 u_int32_t blnum; 1132 struct attr_indexentry *iep; 1133 int error = ENOENT; 1134 u_int32_t aoff, cnum; 1135 1136 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1137 error = ntfs_ntget(ip); 1138 if (error) 1139 return (error); 1140 1141 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1142 if (error) 1143 return (ENOTDIR); 1144 1145 if (fp->f_dirblbuf == NULL) { 1146 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1147 fp->f_dirblbuf = malloc(max(vap->va_datalen,fp->f_dirblsz), 1148 M_NTFSDIR, M_WAITOK); 1149 } 1150 1151 blsize = fp->f_dirblsz; 1152 rdbuf = fp->f_dirblbuf; 1153 1154 dprintf(("ntfs_ntreaddir: rdbuf: %p, blsize: %d\n", rdbuf, blsize)); 1155 1156 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1157 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1158 0, &bmvap); 1159 if (error) { 1160 error = ENOTDIR; 1161 goto fail; 1162 } 1163 bmp = malloc(bmvap->va_datalen, M_TEMP, M_WAITOK); 1164 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1165 bmvap->va_datalen, bmp, NULL); 1166 if (error) 1167 goto fail; 1168 1169 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1170 0, &iavap); 1171 if (error) { 1172 error = ENOTDIR; 1173 goto fail; 1174 } 1175 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1176 dprintf(("ntfs_ntreaddir: indexalloc: %jd, cpbl: %d\n", 1177 iavap->va_datalen, cpbl)); 1178 } else { 1179 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1180 iavap = bmvap = NULL; 1181 bmp = NULL; 1182 } 1183 1184 /* Try use previous values */ 1185 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1186 attrnum = fp->f_lastdattr; 1187 aoff = fp->f_lastdoff; 1188 blnum = fp->f_lastdblnum; 1189 cnum = fp->f_lastdnum; 1190 } else { 1191 attrnum = NTFS_A_INDXROOT; 1192 aoff = sizeof(struct attr_indexroot); 1193 blnum = 0; 1194 cnum = 0; 1195 } 1196 1197 do { 1198 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1199 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1200 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1201 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1202 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1203 if (error) 1204 goto fail; 1205 1206 if (attrnum == NTFS_A_INDX) { 1207 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1208 rdbuf, rdsize); 1209 if (error) 1210 goto fail; 1211 } 1212 if (aoff == 0) 1213 aoff = (attrnum == NTFS_A_INDX) ? 1214 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1215 sizeof(struct attr_indexroot); 1216 1217 iep = (struct attr_indexentry *) (rdbuf + aoff); 1218 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1219 aoff += iep->reclen, 1220 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1221 { 1222 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1223 1224 if (cnum >= num) { 1225 fp->f_lastdnum = cnum; 1226 fp->f_lastdoff = aoff; 1227 fp->f_lastdblnum = blnum; 1228 fp->f_lastdattr = attrnum; 1229 1230 *riepp = iep; 1231 1232 error = 0; 1233 goto fail; 1234 } 1235 cnum++; 1236 } 1237 1238 if (iavap) { 1239 if (attrnum == NTFS_A_INDXROOT) 1240 blnum = 0; 1241 else 1242 blnum++; 1243 1244 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1245 if (bmp[blnum >> 3] & (1 << (blnum & 7))) 1246 break; 1247 blnum++; 1248 } 1249 1250 attrnum = NTFS_A_INDX; 1251 aoff = 0; 1252 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1253 break; 1254 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1255 } 1256 } while (iavap); 1257 1258 *riepp = NULL; 1259 fp->f_lastdnum = 0; 1260 1261 fail: 1262 if (vap) 1263 ntfs_ntvattrrele(vap); 1264 if (bmvap) 1265 ntfs_ntvattrrele(bmvap); 1266 if (iavap) 1267 ntfs_ntvattrrele(iavap); 1268 if (bmp) 1269 free(bmp, M_TEMP); 1270 ntfs_ntput(ip); 1271 return (error); 1272 } 1273 1274 /* 1275 * Convert NTFS times that are in 100 ns units and begins from 1276 * 1601 Jan 1 into unix times. 1277 */ 1278 struct timespec 1279 ntfs_nttimetounix( 1280 u_int64_t nt) 1281 { 1282 struct timespec t; 1283 1284 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1285 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1286 t.tv_sec = nt / (1000 * 1000 * 10) - 1287 369LL * 365LL * 24LL * 60LL * 60LL - 1288 89LL * 1LL * 24LL * 60LL * 60LL; 1289 return (t); 1290 } 1291 1292 /* 1293 * Get file times from NTFS_A_NAME attribute. 1294 */ 1295 int 1296 ntfs_times( 1297 struct ntfsmount * ntmp, 1298 struct ntnode * ip, 1299 ntfs_times_t * tm) 1300 { 1301 struct ntvattr *vap; 1302 int error; 1303 1304 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1305 1306 error = ntfs_ntget(ip); 1307 if (error) 1308 return (error); 1309 1310 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1311 if (error) { 1312 ntfs_ntput(ip); 1313 return (error); 1314 } 1315 *tm = vap->va_a_name->n_times; 1316 ntfs_ntvattrrele(vap); 1317 ntfs_ntput(ip); 1318 1319 return (0); 1320 } 1321 1322 /* 1323 * Get file sizes from corresponding attribute. 1324 * 1325 * ntnode under fnode should be locked. 1326 */ 1327 int 1328 ntfs_filesize( 1329 struct ntfsmount * ntmp, 1330 struct fnode * fp, 1331 u_int64_t * size, 1332 u_int64_t * bytes) 1333 { 1334 struct ntvattr *vap; 1335 struct ntnode *ip = FTONT(fp); 1336 u_int64_t sz, bn; 1337 int error; 1338 1339 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1340 1341 error = ntfs_ntvattrget(ntmp, ip, 1342 fp->f_attrtype, fp->f_attrname, 0, &vap); 1343 if (error) 1344 return (error); 1345 1346 bn = vap->va_allocated; 1347 sz = vap->va_datalen; 1348 1349 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1350 (u_int32_t) sz, (u_int32_t) bn)); 1351 1352 if (size) 1353 *size = sz; 1354 if (bytes) 1355 *bytes = bn; 1356 1357 ntfs_ntvattrrele(vap); 1358 1359 return (0); 1360 } 1361 1362 /* 1363 * This is one of write routine. 1364 */ 1365 int 1366 ntfs_writeattr_plain( 1367 struct ntfsmount * ntmp, 1368 struct ntnode * ip, 1369 u_int32_t attrnum, 1370 char *attrname, 1371 off_t roff, 1372 size_t rsize, 1373 void *rdata, 1374 size_t * initp, 1375 struct uio *uio) 1376 { 1377 size_t init; 1378 int error = 0; 1379 off_t off = roff, left = rsize, towrite; 1380 caddr_t data = rdata; 1381 struct ntvattr *vap; 1382 *initp = 0; 1383 1384 while (left) { 1385 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1386 ntfs_btocn(off), &vap); 1387 if (error) 1388 return (error); 1389 towrite = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1390 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1391 (u_int32_t) off, (u_int32_t) towrite, 1392 (u_int32_t) vap->va_vcnstart, 1393 (u_int32_t) vap->va_vcnend)); 1394 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1395 off - ntfs_cntob(vap->va_vcnstart), 1396 towrite, data, &init, uio); 1397 if (error) { 1398 printf("ntfs_writeattr_plain: " \ 1399 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1400 (u_int32_t) off, (u_int32_t) towrite); 1401 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1402 (u_int32_t) vap->va_vcnstart, 1403 (u_int32_t) vap->va_vcnend); 1404 ntfs_ntvattrrele(vap); 1405 break; 1406 } 1407 ntfs_ntvattrrele(vap); 1408 left -= towrite; 1409 off += towrite; 1410 data = data + towrite; 1411 *initp += init; 1412 } 1413 1414 return (error); 1415 } 1416 1417 /* 1418 * This is one of write routine. 1419 * 1420 * ntnode should be locked. 1421 */ 1422 int 1423 ntfs_writentvattr_plain( 1424 struct ntfsmount * ntmp, 1425 struct ntnode * ip, 1426 struct ntvattr * vap, 1427 off_t roff, 1428 size_t rsize, 1429 void *rdata, 1430 size_t * initp, 1431 struct uio *uio) 1432 { 1433 int error = 0; 1434 off_t off; 1435 int cnt; 1436 cn_t ccn, ccl, cn, left, cl; 1437 caddr_t data = rdata; 1438 struct buf *bp; 1439 size_t tocopy; 1440 1441 *initp = 0; 1442 1443 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1444 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1445 return ENOTTY; 1446 } 1447 1448 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1449 vap->va_vruncnt)); 1450 1451 off = roff; 1452 left = rsize; 1453 ccl = 0; 1454 ccn = 0; 1455 cnt = 0; 1456 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1457 ccn = vap->va_vruncn[cnt]; 1458 ccl = vap->va_vruncl[cnt]; 1459 1460 ddprintf(("ntfs_writentvattr_plain: " \ 1461 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1462 (u_int32_t) left, (u_int32_t) ccn, \ 1463 (u_int32_t) ccl, (u_int32_t) off)); 1464 1465 if (ntfs_cntob(ccl) < off) { 1466 off -= ntfs_cntob(ccl); 1467 cnt++; 1468 continue; 1469 } 1470 if (!ccn && ip->i_number != NTFS_BOOTINO) 1471 continue; /* XXX */ 1472 1473 ccl -= ntfs_btocn(off); 1474 cn = ccn + ntfs_btocn(off); 1475 off = ntfs_btocnoff(off); 1476 1477 while (left && ccl) { 1478 /* 1479 * Always read and write single clusters at a time - 1480 * we need to avoid requesting differently-sized 1481 * blocks at the same disk offsets to avoid 1482 * confusing the buffer cache. 1483 */ 1484 tocopy = MIN(left, ntfs_cntob(1) - off); 1485 cl = ntfs_btocl(tocopy + off); 1486 KASSERT(cl == 1 && tocopy <= ntfs_cntob(1), 1487 ("single cluster limit mistake")); 1488 ddprintf(("ntfs_writentvattr_plain: write: " \ 1489 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1490 (u_int32_t) cn, (u_int32_t) cl, 1491 (u_int32_t) off, (u_int32_t) tocopy, 1492 (u_int32_t) left)); 1493 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1494 { 1495 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn) 1496 * ntmp->ntm_multiplier, 1497 ntfs_cntob(cl), 0, 0, 0); 1498 clrbuf(bp); 1499 } else { 1500 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn) 1501 * ntmp->ntm_multiplier, 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 */ 1535 int 1536 ntfs_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 off_t 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 * ntmp->ntm_multiplier, 1610 ntfs_cntob(cl), 1611 NOCRED, &bp); 1612 if (error) { 1613 brelse(bp); 1614 return (error); 1615 } 1616 if (uio) { 1617 uiomove(bp->b_data + off, 1618 tocopy, uio); 1619 } else { 1620 memcpy(data, bp->b_data + off, 1621 tocopy); 1622 } 1623 brelse(bp); 1624 data = data + tocopy; 1625 *initp += tocopy; 1626 off = 0; 1627 left -= tocopy; 1628 cn += cl; 1629 ccl -= cl; 1630 } 1631 } else { 1632 tocopy = MIN(left, ntfs_cntob(ccl) - off); 1633 ddprintf(("ntfs_readntvattr_plain: " 1634 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1635 " len: %d, left: %d\n", 1636 (u_int32_t) ccn, (u_int32_t) ccl, 1637 (u_int32_t) off, (u_int32_t) tocopy, 1638 (u_int32_t) left)); 1639 left -= tocopy; 1640 off = 0; 1641 if (uio) { 1642 size_t remains = tocopy; 1643 for(; remains; remains--) 1644 uiomove("", 1, uio); 1645 } else 1646 bzero(data, tocopy); 1647 data = data + tocopy; 1648 } 1649 cnt++; 1650 } 1651 if (left) { 1652 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1653 error = E2BIG; 1654 } 1655 } else { 1656 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1657 if (uio) 1658 uiomove(vap->va_datap + roff, rsize, uio); 1659 else 1660 memcpy(rdata, vap->va_datap + roff, rsize); 1661 *initp += rsize; 1662 } 1663 1664 return (error); 1665 } 1666 1667 /* 1668 * This is one of read routines. 1669 */ 1670 int 1671 ntfs_readattr_plain( 1672 struct ntfsmount * ntmp, 1673 struct ntnode * ip, 1674 u_int32_t attrnum, 1675 char *attrname, 1676 off_t roff, 1677 size_t rsize, 1678 void *rdata, 1679 size_t * initp, 1680 struct uio *uio) 1681 { 1682 size_t init; 1683 int error = 0; 1684 off_t off = roff, left = rsize, toread; 1685 caddr_t data = rdata; 1686 struct ntvattr *vap; 1687 *initp = 0; 1688 1689 while (left) { 1690 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1691 ntfs_btocn(off), &vap); 1692 if (error) 1693 return (error); 1694 toread = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1695 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1696 (u_int32_t) off, (u_int32_t) toread, 1697 (u_int32_t) vap->va_vcnstart, 1698 (u_int32_t) vap->va_vcnend)); 1699 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1700 off - ntfs_cntob(vap->va_vcnstart), 1701 toread, data, &init, uio); 1702 if (error) { 1703 printf("ntfs_readattr_plain: " \ 1704 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1705 (u_int32_t) off, (u_int32_t) toread); 1706 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1707 (u_int32_t) vap->va_vcnstart, 1708 (u_int32_t) vap->va_vcnend); 1709 ntfs_ntvattrrele(vap); 1710 break; 1711 } 1712 ntfs_ntvattrrele(vap); 1713 left -= toread; 1714 off += toread; 1715 data = data + toread; 1716 *initp += init; 1717 } 1718 1719 return (error); 1720 } 1721 1722 /* 1723 * This is one of read routines. 1724 */ 1725 int 1726 ntfs_readattr( 1727 struct ntfsmount * ntmp, 1728 struct ntnode * ip, 1729 u_int32_t attrnum, 1730 char *attrname, 1731 off_t roff, 1732 size_t rsize, 1733 void *rdata, 1734 struct uio *uio) 1735 { 1736 int error = 0; 1737 struct ntvattr *vap; 1738 size_t init; 1739 1740 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1741 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1742 1743 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1744 if (error) 1745 return (error); 1746 1747 if ((roff > vap->va_datalen) || 1748 (roff + rsize > vap->va_datalen)) { 1749 ddprintf(("ntfs_readattr: offset too big\n")); 1750 ntfs_ntvattrrele(vap); 1751 return (E2BIG); 1752 } 1753 if (vap->va_compression && vap->va_compressalg) { 1754 u_int8_t *cup; 1755 u_int8_t *uup; 1756 off_t off = roff, left = rsize, tocopy; 1757 caddr_t data = rdata; 1758 cn_t cn; 1759 1760 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1761 vap->va_compressalg)); 1762 1763 cup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1764 M_NTFSDECOMP, M_WAITOK); 1765 uup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1766 M_NTFSDECOMP, M_WAITOK); 1767 1768 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1769 off = roff - ntfs_cntob(cn); 1770 1771 while (left) { 1772 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1773 attrname, ntfs_cntob(cn), 1774 ntfs_cntob(NTFS_COMPUNIT_CL), 1775 cup, &init, NULL); 1776 if (error) 1777 break; 1778 1779 tocopy = MIN(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1780 1781 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1782 if (uio) 1783 uiomove(cup + off, tocopy, uio); 1784 else 1785 memcpy(data, cup + off, tocopy); 1786 } else if (init == 0) { 1787 if (uio) { 1788 size_t remains = tocopy; 1789 for(; remains; remains--) 1790 uiomove("", 1, uio); 1791 } 1792 else 1793 bzero(data, tocopy); 1794 } else { 1795 error = ntfs_uncompunit(ntmp, uup, cup); 1796 if (error) 1797 break; 1798 if (uio) 1799 uiomove(uup + off, tocopy, uio); 1800 else 1801 memcpy(data, uup + off, tocopy); 1802 } 1803 1804 left -= tocopy; 1805 data = data + tocopy; 1806 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1807 cn += NTFS_COMPUNIT_CL; 1808 } 1809 1810 free(uup, M_NTFSDECOMP); 1811 free(cup, M_NTFSDECOMP); 1812 } else 1813 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1814 roff, rsize, rdata, &init, uio); 1815 ntfs_ntvattrrele(vap); 1816 return (error); 1817 } 1818 1819 #if 0 1820 int 1821 ntfs_parserun( 1822 cn_t * cn, 1823 cn_t * cl, 1824 u_int8_t * run, 1825 u_long len, 1826 u_long *off) 1827 { 1828 u_int8_t sz; 1829 int i; 1830 1831 if (NULL == run) { 1832 printf("ntfs_parsetun: run == NULL\n"); 1833 return (EINVAL); 1834 } 1835 sz = run[(*off)++]; 1836 if (0 == sz) { 1837 printf("ntfs_parserun: trying to go out of run\n"); 1838 return (E2BIG); 1839 } 1840 *cl = 0; 1841 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1842 printf("ntfs_parserun: " \ 1843 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1844 sz, len, *off); 1845 return (EINVAL); 1846 } 1847 for (i = 0; i < (sz & 0xF); i++) 1848 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1849 1850 sz >>= 4; 1851 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1852 printf("ntfs_parserun: " \ 1853 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1854 sz, len, *off); 1855 return (EINVAL); 1856 } 1857 for (i = 0; i < (sz & 0xF); i++) 1858 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1859 1860 return (0); 1861 } 1862 #endif 1863 1864 /* 1865 * Process fixup routine on given buffer. 1866 */ 1867 int 1868 ntfs_procfixups( 1869 struct ntfsmount * ntmp, 1870 u_int32_t magic, 1871 caddr_t buf, 1872 size_t len) 1873 { 1874 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1875 int i; 1876 u_int16_t fixup; 1877 u_int16_t *fxp; 1878 u_int16_t *cfxp; 1879 1880 if (fhp->fh_magic != magic) { 1881 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1882 fhp->fh_magic, magic); 1883 return (EINVAL); 1884 } 1885 if ((fhp->fh_fnum - 1) * NTFS_BLOCK_SIZE != len) { 1886 printf("ntfs_procfixups: " \ 1887 "bad fixups number: %d for %ld bytes block\n", 1888 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1889 return (EINVAL); 1890 } 1891 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1892 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1893 return (EINVAL); 1894 } 1895 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1896 cfxp = (u_int16_t *) (buf + NTFS_BLOCK_SIZE - 2); 1897 fixup = *fxp++; 1898 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1899 if (*cfxp != fixup) { 1900 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1901 return (EINVAL); 1902 } 1903 *cfxp = *fxp; 1904 cfxp = (u_int16_t *) ((caddr_t) cfxp + NTFS_BLOCK_SIZE); 1905 } 1906 return (0); 1907 } 1908 1909 #if 0 1910 int 1911 ntfs_runtocn( 1912 cn_t * cn, 1913 struct ntfsmount * ntmp, 1914 u_int8_t * run, 1915 u_long len, 1916 cn_t vcn) 1917 { 1918 cn_t ccn = 0; 1919 cn_t ccl = 0; 1920 u_long off = 0; 1921 int error = 0; 1922 1923 #if NTFS_DEBUG 1924 int i; 1925 printf("ntfs_runtocn: run: %p, %ld bytes, vcn:%ld\n", 1926 run, len, (u_long) vcn); 1927 printf("ntfs_runtocn: run: "); 1928 for (i = 0; i < len; i++) 1929 printf("0x%02x ", run[i]); 1930 printf("\n"); 1931 #endif 1932 1933 if (NULL == run) { 1934 printf("ntfs_runtocn: run == NULL\n"); 1935 return (EINVAL); 1936 } 1937 do { 1938 if (run[off] == 0) { 1939 printf("ntfs_runtocn: vcn too big\n"); 1940 return (E2BIG); 1941 } 1942 vcn -= ccl; 1943 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1944 if (error) { 1945 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1946 return (error); 1947 } 1948 } while (ccl <= vcn); 1949 *cn = ccn + vcn; 1950 return (0); 1951 } 1952 #endif 1953 1954 /* 1955 * this initializes toupper table & dependant variables to be ready for 1956 * later work 1957 */ 1958 void 1959 ntfs_toupper_init() 1960 { 1961 ntfs_toupper_tab = (wchar *) NULL; 1962 lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0); 1963 ntfs_toupper_usecount = 0; 1964 } 1965 1966 void 1967 ntfs_toupper_destroy(void) 1968 { 1969 1970 lockdestroy(&ntfs_toupper_lock); 1971 } 1972 1973 /* 1974 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1975 * otherwise read the data from the filesystem we are currently mounting 1976 */ 1977 int 1978 ntfs_toupper_use(mp, ntmp) 1979 struct mount *mp; 1980 struct ntfsmount *ntmp; 1981 { 1982 int error = 0; 1983 struct vnode *vp; 1984 1985 /* get exclusive access */ 1986 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1987 1988 /* only read the translation data from a file if it hasn't been 1989 * read already */ 1990 if (ntfs_toupper_tab) 1991 goto out; 1992 1993 /* 1994 * Read in Unicode lowercase -> uppercase translation file. 1995 * XXX for now, just the first 256 entries are used anyway, 1996 * so don't bother reading more 1997 */ 1998 ntfs_toupper_tab = malloc(65536 * sizeof(wchar), 1999 M_NTFSRDATA, M_WAITOK); 2000 2001 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, LK_EXCLUSIVE, &vp))) 2002 goto out; 2003 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 2004 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 2005 vput(vp); 2006 2007 out: 2008 ntfs_toupper_usecount++; 2009 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2010 return (error); 2011 } 2012 2013 /* 2014 * lower the use count and if it reaches zero, free the memory 2015 * tied by toupper table 2016 */ 2017 void 2018 ntfs_toupper_unuse() 2019 { 2020 /* get exclusive access */ 2021 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 2022 2023 ntfs_toupper_usecount--; 2024 if (ntfs_toupper_usecount == 0) { 2025 free(ntfs_toupper_tab, M_NTFSRDATA); 2026 ntfs_toupper_tab = NULL; 2027 } 2028 #ifdef DIAGNOSTIC 2029 else if (ntfs_toupper_usecount < 0) { 2030 panic("ntfs_toupper_unuse(): use count negative: %d\n", 2031 ntfs_toupper_usecount); 2032 } 2033 #endif 2034 2035 /* release the lock */ 2036 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2037 } 2038 2039 int 2040 ntfs_u28_init( 2041 struct ntfsmount *ntmp, 2042 wchar *u2w, 2043 char *cs_local, 2044 char *cs_ntfs) 2045 { 2046 char ** u28; 2047 int i, j, h, l; 2048 2049 if (ntfs_iconv && cs_local) { 2050 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 2051 return (0); 2052 } 2053 2054 u28 = malloc(256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2055 2056 for (i=0; i<256; i++) { 2057 h = (u2w[i] >> 8) & 0xFF; 2058 l = (u2w[i]) &0xFF; 2059 2060 if (u28[h] == NULL) { 2061 u28[h] = malloc(256 * sizeof(char), M_TEMP, M_WAITOK); 2062 for (j=0; j<256; j++) 2063 u28[h][j] = '_'; 2064 } 2065 2066 u28[h][l] = i & 0xFF; 2067 } 2068 2069 ntmp->ntm_u28 = u28; 2070 2071 return (0); 2072 } 2073 2074 int 2075 ntfs_u28_uninit(struct ntfsmount *ntmp) 2076 { 2077 char ** u28; 2078 int i; 2079 2080 if (ntmp->ntm_u28 == NULL) { 2081 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2082 ntfs_iconv->close(ntmp->ntm_ic_u2l); 2083 } 2084 return (0); 2085 } 2086 2087 u28 = ntmp->ntm_u28; 2088 2089 for (i=0; i<256; i++) 2090 if (u28[i] != NULL) 2091 free(u28[i], M_TEMP); 2092 2093 free(u28, M_TEMP); 2094 2095 return (0); 2096 } 2097 2098 int 2099 ntfs_82u_init( 2100 struct ntfsmount *ntmp, 2101 char *cs_local, 2102 char *cs_ntfs) 2103 { 2104 wchar * _82u; 2105 int i; 2106 2107 if (ntfs_iconv && cs_local) { 2108 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2109 return (0); 2110 } 2111 2112 _82u = malloc(256 * sizeof(wchar), M_TEMP, M_WAITOK); 2113 2114 for (i=0; i<256; i++) 2115 _82u[i] = i; 2116 2117 ntmp->ntm_82u = _82u; 2118 2119 return (0); 2120 } 2121 2122 int 2123 ntfs_82u_uninit(struct ntfsmount *ntmp) 2124 { 2125 2126 if (ntmp->ntm_82u == NULL) { 2127 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2128 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2129 } 2130 return (0); 2131 } 2132 2133 free(ntmp->ntm_82u, M_TEMP); 2134 return (0); 2135 } 2136 2137 /* 2138 * maps the Unicode char to 8bit equivalent 2139 * XXX currently only gets lower 8bit from the Unicode char 2140 * and substitutes a '_' for it if the result would be '\0'; 2141 * something better has to be definitely though out 2142 */ 2143 wchar 2144 ntfs_u28( 2145 struct ntfsmount *ntmp, 2146 wchar wc) 2147 { 2148 char *p, *outp, inbuf[3], outbuf[3]; 2149 size_t ilen, olen; 2150 2151 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2152 ilen = olen = 2; 2153 2154 inbuf[0] = (char)(wc>>8); 2155 inbuf[1] = (char)wc; 2156 inbuf[2] = '\0'; 2157 p = inbuf; 2158 outp = outbuf; 2159 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen, 2160 &outp, &olen); 2161 if (olen == 1) { 2162 return ((wchar)(outbuf[0]&0xFF)); 2163 } else if (olen == 0) { 2164 return ((wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF))); 2165 } 2166 return ('?'); 2167 } 2168 2169 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2170 if (p == NULL) 2171 return ('_'); 2172 return (p[wc&0xFF]&0xFF); 2173 } 2174 2175 wchar 2176 ntfs_82u( 2177 struct ntfsmount *ntmp, 2178 wchar wc, 2179 int *len) 2180 { 2181 char *p, *outp, inbuf[3], outbuf[3]; 2182 wchar uc; 2183 size_t ilen, olen; 2184 2185 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2186 ilen = (size_t)*len; 2187 olen = 2; 2188 2189 inbuf[0] = (char)(wc>>8); 2190 inbuf[1] = (char)wc; 2191 inbuf[2] = '\0'; 2192 p = inbuf; 2193 outp = outbuf; 2194 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, (const char **)&p, &ilen, 2195 &outp, &olen); 2196 *len -= (int)ilen; 2197 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2198 2199 return (uc); 2200 } 2201 2202 if (ntmp->ntm_82u != NULL) 2203 return (ntmp->ntm_82u[wc&0xFF]); 2204 2205 return ('?'); 2206 } 2207
Cache object: 5f4540b62a88c2d3185ce9499f562ca4
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