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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/9.1/sys/fs/ntfs/ntfs_subr.c 230197 2012-01-16 05:22:18Z kevlo $ 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 const char *astrp = astr; 671 char tmpbuf[5]; 672 int len, res; 673 size_t i, j, mbstrlen = astrlen; 674 675 if (ntmp->ntm_ic_l2u) { 676 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++) { 677 len = 4; 678 res = ((int) NTFS_TOUPPER(ustr[i])) - 679 ((int)NTFS_TOUPPER(NTFS_82U(astrp, &len))); 680 astrp += len; 681 j += len; 682 mbstrlen -= len - 1; 683 684 if (res) 685 return res; 686 } 687 } else { 688 /* 689 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 690 * symbols not covered by translation table 691 */ 692 for (i = 0; i < ustrlen && i < astrlen; i++) { 693 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 694 ((int)NTFS_TOUPPER(NTFS_82U(astrp, &len))); 695 astrp++; 696 if (res) 697 return res; 698 } 699 } 700 return (ustrlen - mbstrlen); 701 } 702 703 /* 704 * Compare unicode and ascii string case sens. 705 */ 706 static int 707 ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 708 struct ntfsmount *ntmp; 709 const wchar *ustr; 710 size_t ustrlen; 711 const char *astr; 712 size_t astrlen; 713 { 714 char *c, tmpbuf[5]; 715 size_t i, j, mbstrlen = astrlen; 716 int res; 717 718 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, mbstrlen++) { 719 c = NTFS_U28(ustr[i]); 720 while (*c != '\0') { 721 res = (int) (*c++ - astr[j++]); 722 if (res) 723 return res; 724 mbstrlen--; 725 } 726 } 727 return (ustrlen - mbstrlen); 728 } 729 730 /* 731 * Search fnode in ntnode, if not found allocate and preinitialize. 732 * 733 * ntnode should be locked on entry. 734 */ 735 int 736 ntfs_fget( 737 struct ntfsmount *ntmp, 738 struct ntnode *ip, 739 int attrtype, 740 char *attrname, 741 struct fnode **fpp) 742 { 743 struct fnode *fp; 744 745 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 746 ip->i_number,attrtype, attrname?attrname:"")); 747 *fpp = NULL; 748 LIST_FOREACH(fp, &ip->i_fnlist, f_fnlist){ 749 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 750 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 751 752 if ((attrtype == fp->f_attrtype) && 753 ((!attrname && !fp->f_attrname) || 754 (attrname && fp->f_attrname && 755 !strcmp(attrname,fp->f_attrname)))){ 756 dprintf(("ntfs_fget: found existed: %p\n",fp)); 757 *fpp = fp; 758 } 759 } 760 761 if (*fpp) 762 return (0); 763 764 fp = malloc(sizeof(struct fnode), M_NTFSFNODE, 765 M_WAITOK | M_ZERO); 766 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 767 768 fp->f_ip = ip; 769 if (attrname) { 770 fp->f_flag |= FN_AATTRNAME; 771 fp->f_attrname = malloc(strlen(attrname)+1, M_TEMP, M_WAITOK); 772 strcpy(fp->f_attrname, attrname); 773 } else 774 fp->f_attrname = NULL; 775 fp->f_attrtype = attrtype; 776 777 ntfs_ntref(ip); 778 779 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 780 781 *fpp = fp; 782 783 return (0); 784 } 785 786 /* 787 * Deallocate fnode, remove it from ntnode's fnode list. 788 * 789 * ntnode should be locked. 790 */ 791 void 792 ntfs_frele( 793 struct fnode *fp) 794 { 795 struct ntnode *ip = FTONT(fp); 796 797 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 798 799 dprintf(("ntfs_frele: deallocating fnode\n")); 800 LIST_REMOVE(fp,f_fnlist); 801 if (fp->f_flag & FN_AATTRNAME) 802 free(fp->f_attrname, M_TEMP); 803 if (fp->f_dirblbuf) 804 free(fp->f_dirblbuf, M_NTFSDIR); 805 free(fp, M_NTFSFNODE); 806 ntfs_ntrele(ip); 807 } 808 809 /* 810 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 811 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 812 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 813 */ 814 static int 815 ntfs_ntlookupattr( 816 struct ntfsmount * ntmp, 817 const char * name, 818 int namelen, 819 int *attrtype, 820 char **attrname) 821 { 822 const char *sys; 823 size_t syslen, i; 824 struct ntvattrdef *adp; 825 826 if (namelen == 0) 827 return (0); 828 829 if (name[0] == '$') { 830 sys = name; 831 for (syslen = 0; syslen < namelen; syslen++) { 832 if(sys[syslen] == ':') { 833 name++; 834 namelen--; 835 break; 836 } 837 } 838 name += syslen; 839 namelen -= syslen; 840 841 adp = ntmp->ntm_ad; 842 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 843 if (syslen != adp->ad_namelen || 844 strncmp(sys, adp->ad_name, syslen) != 0) 845 continue; 846 847 *attrtype = adp->ad_type; 848 goto out; 849 } 850 return (ENOENT); 851 } else 852 *attrtype = NTFS_A_DATA; 853 854 out: 855 if (namelen) { 856 (*attrname) = malloc(namelen, M_TEMP, M_WAITOK); 857 memcpy((*attrname), name, namelen); 858 (*attrname)[namelen] = '\0'; 859 } 860 861 return (0); 862 } 863 864 /* 865 * Lookup specifed node for filename, matching cnp, 866 * return fnode filled. 867 */ 868 int 869 ntfs_ntlookupfile( 870 struct ntfsmount * ntmp, 871 struct vnode * vp, 872 struct componentname * cnp, 873 struct vnode ** vpp) 874 { 875 struct fnode *fp = VTOF(vp); 876 struct ntnode *ip = FTONT(fp); 877 struct ntvattr *vap; /* Root attribute */ 878 cn_t cn; /* VCN in current attribute */ 879 caddr_t rdbuf; /* Buffer to read directory's blocks */ 880 u_int32_t blsize; 881 u_int64_t rdsize; /* Length of data to read from current block */ 882 struct attr_indexentry *iep; 883 int error, res, anamelen, fnamelen; 884 const char *fname,*aname; 885 u_int32_t aoff; 886 int attrtype = NTFS_A_DATA; 887 char *attrname = NULL; 888 struct fnode *nfp; 889 struct vnode *nvp; 890 enum vtype f_type; 891 892 error = ntfs_ntget(ip); 893 if (error) 894 return (error); 895 896 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 897 if (error || (vap->va_flag & NTFS_AF_INRUN)) 898 return (ENOTDIR); 899 900 blsize = vap->va_a_iroot->ir_size; 901 rdsize = vap->va_datalen; 902 903 /* 904 * Divide file name into: foofilefoofilefoofile[:attrspec] 905 * Store like this: fname:fnamelen [aname:anamelen] 906 */ 907 fname = cnp->cn_nameptr; 908 aname = NULL; 909 anamelen = 0; 910 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 911 if(fname[fnamelen] == ':') { 912 aname = fname + fnamelen + 1; 913 anamelen = cnp->cn_namelen - fnamelen - 1; 914 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 915 fname, fnamelen, aname, anamelen)); 916 break; 917 } 918 919 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %jd\n", blsize, rdsize)); 920 921 rdbuf = malloc(blsize, M_TEMP, M_WAITOK); 922 923 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 924 0, rdsize, rdbuf, NULL); 925 if (error) 926 goto fail; 927 928 aoff = sizeof(struct attr_indexroot); 929 930 do { 931 iep = (struct attr_indexentry *) (rdbuf + aoff); 932 933 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 934 aoff += iep->reclen, 935 iep = (struct attr_indexentry *) (rdbuf + aoff)) 936 { 937 ddprintf(("scan: %d, %d\n", 938 (u_int32_t) iep->ie_number, 939 (u_int32_t) iep->ie_fnametype)); 940 941 /* check the name - the case-insensitible check 942 * has to come first, to break from this for loop 943 * if needed, so we can dive correctly */ 944 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 945 fname, fnamelen); 946 if (res > 0) break; 947 if (res < 0) continue; 948 949 if (iep->ie_fnametype == 0 || 950 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 951 { 952 res = NTFS_UASTRCMP(iep->ie_fname, 953 iep->ie_fnamelen, fname, fnamelen); 954 if (res != 0) continue; 955 } 956 957 if (aname) { 958 error = ntfs_ntlookupattr(ntmp, 959 aname, anamelen, 960 &attrtype, &attrname); 961 if (error) 962 goto fail; 963 } 964 965 /* Check if we've found ourself */ 966 if ((iep->ie_number == ip->i_number) && 967 (attrtype == fp->f_attrtype) && 968 ((!attrname && !fp->f_attrname) || 969 (attrname && fp->f_attrname && 970 !strcmp(attrname, fp->f_attrname)))) 971 { 972 VREF(vp); 973 *vpp = vp; 974 error = 0; 975 goto fail; 976 } 977 978 /* vget node, but don't load it */ 979 error = ntfs_vgetex(ntmp->ntm_mountp, 980 iep->ie_number, attrtype, attrname, 981 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 982 curthread, &nvp); 983 984 /* free the buffer returned by ntfs_ntlookupattr() */ 985 if (attrname) { 986 free(attrname, M_TEMP); 987 attrname = NULL; 988 } 989 990 if (error) 991 goto fail; 992 993 nfp = VTOF(nvp); 994 995 if (nfp->f_flag & FN_VALID) { 996 *vpp = nvp; 997 goto fail; 998 } 999 1000 nfp->f_fflag = iep->ie_fflag; 1001 nfp->f_pnumber = iep->ie_fpnumber; 1002 nfp->f_times = iep->ie_ftimes; 1003 1004 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 1005 (nfp->f_attrtype == NTFS_A_DATA) && 1006 (nfp->f_attrname == NULL)) 1007 f_type = VDIR; 1008 else 1009 f_type = VREG; 1010 1011 nvp->v_type = f_type; 1012 1013 if ((nfp->f_attrtype == NTFS_A_DATA) && 1014 (nfp->f_attrname == NULL)) 1015 { 1016 /* Opening default attribute */ 1017 nfp->f_size = iep->ie_fsize; 1018 nfp->f_allocated = iep->ie_fallocated; 1019 nfp->f_flag |= FN_PRELOADED; 1020 } else { 1021 error = ntfs_filesize(ntmp, nfp, 1022 &nfp->f_size, &nfp->f_allocated); 1023 if (error) { 1024 vput(nvp); 1025 goto fail; 1026 } 1027 } 1028 1029 nfp->f_flag &= ~FN_VALID; 1030 *vpp = nvp; 1031 goto fail; 1032 } 1033 1034 /* Dive if possible */ 1035 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1036 dprintf(("ntfs_ntlookupfile: diving\n")); 1037 1038 cn = *(cn_t *) (rdbuf + aoff + 1039 iep->reclen - sizeof(cn_t)); 1040 rdsize = blsize; 1041 1042 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1043 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1044 if (error) 1045 goto fail; 1046 1047 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1048 rdbuf, rdsize); 1049 if (error) 1050 goto fail; 1051 1052 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1053 0x18); 1054 } else { 1055 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1056 error = ENOENT; 1057 break; 1058 } 1059 } while (1); 1060 1061 dprintf(("finish\n")); 1062 1063 fail: 1064 if (attrname) free(attrname, M_TEMP); 1065 ntfs_ntvattrrele(vap); 1066 ntfs_ntput(ip); 1067 free(rdbuf, M_TEMP); 1068 return (error); 1069 } 1070 1071 /* 1072 * Check if name type is permitted to show. 1073 */ 1074 int 1075 ntfs_isnamepermitted( 1076 struct ntfsmount * ntmp, 1077 struct attr_indexentry * iep) 1078 { 1079 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1080 return 1; 1081 1082 switch (iep->ie_fnametype) { 1083 case 2: 1084 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n")); 1085 return 0; 1086 case 0: case 1: case 3: 1087 return 1; 1088 default: 1089 printf("ntfs_isnamepermitted: " \ 1090 "WARNING! Unknown file name type: %d\n", 1091 iep->ie_fnametype); 1092 break; 1093 } 1094 return 0; 1095 } 1096 1097 /* 1098 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1099 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1100 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1101 * fnode, so we can skip toward record number num almost immediatly. 1102 * Anyway this is rather slow routine. The problem is that we don't know 1103 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1104 */ 1105 int 1106 ntfs_ntreaddir( 1107 struct ntfsmount * ntmp, 1108 struct fnode * fp, 1109 u_int32_t num, 1110 struct attr_indexentry ** riepp) 1111 { 1112 struct ntnode *ip = FTONT(fp); 1113 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1114 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1115 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1116 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1117 u_int8_t *bmp = NULL; /* Bitmap */ 1118 u_int32_t blsize; /* Index allocation size (2048) */ 1119 u_int32_t rdsize; /* Length of data to read */ 1120 u_int32_t attrnum; /* Current attribute type */ 1121 u_int32_t cpbl = 1; /* Clusters per directory block */ 1122 u_int32_t blnum; 1123 struct attr_indexentry *iep; 1124 int error = ENOENT; 1125 u_int32_t aoff, cnum; 1126 1127 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1128 error = ntfs_ntget(ip); 1129 if (error) 1130 return (error); 1131 1132 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1133 if (error) 1134 return (ENOTDIR); 1135 1136 if (fp->f_dirblbuf == NULL) { 1137 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1138 fp->f_dirblbuf = malloc(max(vap->va_datalen,fp->f_dirblsz), 1139 M_NTFSDIR, M_WAITOK); 1140 } 1141 1142 blsize = fp->f_dirblsz; 1143 rdbuf = fp->f_dirblbuf; 1144 1145 dprintf(("ntfs_ntreaddir: rdbuf: %p, blsize: %d\n", rdbuf, blsize)); 1146 1147 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1148 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1149 0, &bmvap); 1150 if (error) { 1151 error = ENOTDIR; 1152 goto fail; 1153 } 1154 bmp = malloc(bmvap->va_datalen, M_TEMP, M_WAITOK); 1155 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1156 bmvap->va_datalen, bmp, NULL); 1157 if (error) 1158 goto fail; 1159 1160 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1161 0, &iavap); 1162 if (error) { 1163 error = ENOTDIR; 1164 goto fail; 1165 } 1166 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1167 dprintf(("ntfs_ntreaddir: indexalloc: %jd, cpbl: %d\n", 1168 iavap->va_datalen, cpbl)); 1169 } else { 1170 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1171 iavap = bmvap = NULL; 1172 bmp = NULL; 1173 } 1174 1175 /* Try use previous values */ 1176 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1177 attrnum = fp->f_lastdattr; 1178 aoff = fp->f_lastdoff; 1179 blnum = fp->f_lastdblnum; 1180 cnum = fp->f_lastdnum; 1181 } else { 1182 attrnum = NTFS_A_INDXROOT; 1183 aoff = sizeof(struct attr_indexroot); 1184 blnum = 0; 1185 cnum = 0; 1186 } 1187 1188 do { 1189 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1190 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1191 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1192 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1193 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1194 if (error) 1195 goto fail; 1196 1197 if (attrnum == NTFS_A_INDX) { 1198 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1199 rdbuf, rdsize); 1200 if (error) 1201 goto fail; 1202 } 1203 if (aoff == 0) 1204 aoff = (attrnum == NTFS_A_INDX) ? 1205 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1206 sizeof(struct attr_indexroot); 1207 1208 iep = (struct attr_indexentry *) (rdbuf + aoff); 1209 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1210 aoff += iep->reclen, 1211 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1212 { 1213 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1214 1215 if (cnum >= num) { 1216 fp->f_lastdnum = cnum; 1217 fp->f_lastdoff = aoff; 1218 fp->f_lastdblnum = blnum; 1219 fp->f_lastdattr = attrnum; 1220 1221 *riepp = iep; 1222 1223 error = 0; 1224 goto fail; 1225 } 1226 cnum++; 1227 } 1228 1229 if (iavap) { 1230 if (attrnum == NTFS_A_INDXROOT) 1231 blnum = 0; 1232 else 1233 blnum++; 1234 1235 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1236 if (bmp[blnum >> 3] & (1 << (blnum & 7))) 1237 break; 1238 blnum++; 1239 } 1240 1241 attrnum = NTFS_A_INDX; 1242 aoff = 0; 1243 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1244 break; 1245 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1246 } 1247 } while (iavap); 1248 1249 *riepp = NULL; 1250 fp->f_lastdnum = 0; 1251 1252 fail: 1253 if (vap) 1254 ntfs_ntvattrrele(vap); 1255 if (bmvap) 1256 ntfs_ntvattrrele(bmvap); 1257 if (iavap) 1258 ntfs_ntvattrrele(iavap); 1259 if (bmp) 1260 free(bmp, M_TEMP); 1261 ntfs_ntput(ip); 1262 return (error); 1263 } 1264 1265 /* 1266 * Convert NTFS times that are in 100 ns units and begins from 1267 * 1601 Jan 1 into unix times. 1268 */ 1269 struct timespec 1270 ntfs_nttimetounix( 1271 u_int64_t nt) 1272 { 1273 struct timespec t; 1274 1275 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1276 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1277 t.tv_sec = nt / (1000 * 1000 * 10) - 1278 369LL * 365LL * 24LL * 60LL * 60LL - 1279 89LL * 1LL * 24LL * 60LL * 60LL; 1280 return (t); 1281 } 1282 1283 /* 1284 * Get file times from NTFS_A_NAME attribute. 1285 */ 1286 int 1287 ntfs_times( 1288 struct ntfsmount * ntmp, 1289 struct ntnode * ip, 1290 ntfs_times_t * tm) 1291 { 1292 struct ntvattr *vap; 1293 int error; 1294 1295 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1296 1297 error = ntfs_ntget(ip); 1298 if (error) 1299 return (error); 1300 1301 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1302 if (error) { 1303 ntfs_ntput(ip); 1304 return (error); 1305 } 1306 *tm = vap->va_a_name->n_times; 1307 ntfs_ntvattrrele(vap); 1308 ntfs_ntput(ip); 1309 1310 return (0); 1311 } 1312 1313 /* 1314 * Get file sizes from corresponding attribute. 1315 * 1316 * ntnode under fnode should be locked. 1317 */ 1318 int 1319 ntfs_filesize( 1320 struct ntfsmount * ntmp, 1321 struct fnode * fp, 1322 u_int64_t * size, 1323 u_int64_t * bytes) 1324 { 1325 struct ntvattr *vap; 1326 struct ntnode *ip = FTONT(fp); 1327 u_int64_t sz, bn; 1328 int error; 1329 1330 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1331 1332 error = ntfs_ntvattrget(ntmp, ip, 1333 fp->f_attrtype, fp->f_attrname, 0, &vap); 1334 if (error) 1335 return (error); 1336 1337 bn = vap->va_allocated; 1338 sz = vap->va_datalen; 1339 1340 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1341 (u_int32_t) sz, (u_int32_t) bn)); 1342 1343 if (size) 1344 *size = sz; 1345 if (bytes) 1346 *bytes = bn; 1347 1348 ntfs_ntvattrrele(vap); 1349 1350 return (0); 1351 } 1352 1353 /* 1354 * This is one of write routine. 1355 */ 1356 int 1357 ntfs_writeattr_plain( 1358 struct ntfsmount * ntmp, 1359 struct ntnode * ip, 1360 u_int32_t attrnum, 1361 char *attrname, 1362 off_t roff, 1363 size_t rsize, 1364 void *rdata, 1365 size_t * initp, 1366 struct uio *uio) 1367 { 1368 size_t init; 1369 int error = 0; 1370 off_t off = roff, left = rsize, towrite; 1371 caddr_t data = rdata; 1372 struct ntvattr *vap; 1373 *initp = 0; 1374 1375 while (left) { 1376 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1377 ntfs_btocn(off), &vap); 1378 if (error) 1379 return (error); 1380 towrite = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1381 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1382 (u_int32_t) off, (u_int32_t) towrite, 1383 (u_int32_t) vap->va_vcnstart, 1384 (u_int32_t) vap->va_vcnend)); 1385 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1386 off - ntfs_cntob(vap->va_vcnstart), 1387 towrite, data, &init, uio); 1388 if (error) { 1389 printf("ntfs_writeattr_plain: " \ 1390 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1391 (u_int32_t) off, (u_int32_t) towrite); 1392 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1393 (u_int32_t) vap->va_vcnstart, 1394 (u_int32_t) vap->va_vcnend); 1395 ntfs_ntvattrrele(vap); 1396 break; 1397 } 1398 ntfs_ntvattrrele(vap); 1399 left -= towrite; 1400 off += towrite; 1401 data = data + towrite; 1402 *initp += init; 1403 } 1404 1405 return (error); 1406 } 1407 1408 /* 1409 * This is one of write routine. 1410 * 1411 * ntnode should be locked. 1412 */ 1413 int 1414 ntfs_writentvattr_plain( 1415 struct ntfsmount * ntmp, 1416 struct ntnode * ip, 1417 struct ntvattr * vap, 1418 off_t roff, 1419 size_t rsize, 1420 void *rdata, 1421 size_t * initp, 1422 struct uio *uio) 1423 { 1424 int error = 0; 1425 off_t off; 1426 int cnt; 1427 cn_t ccn, ccl, cn, left, cl; 1428 caddr_t data = rdata; 1429 struct buf *bp; 1430 size_t tocopy; 1431 1432 *initp = 0; 1433 1434 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1435 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1436 return ENOTTY; 1437 } 1438 1439 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1440 vap->va_vruncnt)); 1441 1442 off = roff; 1443 left = rsize; 1444 ccl = 0; 1445 ccn = 0; 1446 cnt = 0; 1447 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1448 ccn = vap->va_vruncn[cnt]; 1449 ccl = vap->va_vruncl[cnt]; 1450 1451 ddprintf(("ntfs_writentvattr_plain: " \ 1452 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1453 (u_int32_t) left, (u_int32_t) ccn, \ 1454 (u_int32_t) ccl, (u_int32_t) off)); 1455 1456 if (ntfs_cntob(ccl) < off) { 1457 off -= ntfs_cntob(ccl); 1458 cnt++; 1459 continue; 1460 } 1461 if (!ccn && ip->i_number != NTFS_BOOTINO) 1462 continue; /* XXX */ 1463 1464 ccl -= ntfs_btocn(off); 1465 cn = ccn + ntfs_btocn(off); 1466 off = ntfs_btocnoff(off); 1467 1468 while (left && ccl) { 1469 /* 1470 * Always read and write single clusters at a time - 1471 * we need to avoid requesting differently-sized 1472 * blocks at the same disk offsets to avoid 1473 * confusing the buffer cache. 1474 */ 1475 tocopy = MIN(left, ntfs_cntob(1) - off); 1476 cl = ntfs_btocl(tocopy + off); 1477 KASSERT(cl == 1 && tocopy <= ntfs_cntob(1), 1478 ("single cluster limit mistake")); 1479 ddprintf(("ntfs_writentvattr_plain: write: " \ 1480 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1481 (u_int32_t) cn, (u_int32_t) cl, 1482 (u_int32_t) off, (u_int32_t) tocopy, 1483 (u_int32_t) left)); 1484 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1485 { 1486 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn) 1487 * ntmp->ntm_multiplier, 1488 ntfs_cntob(cl), 0, 0, 0); 1489 clrbuf(bp); 1490 } else { 1491 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn) 1492 * ntmp->ntm_multiplier, 1493 ntfs_cntob(cl), NOCRED, &bp); 1494 if (error) { 1495 brelse(bp); 1496 return (error); 1497 } 1498 } 1499 if (uio) 1500 uiomove(bp->b_data + off, tocopy, uio); 1501 else 1502 memcpy(bp->b_data + off, data, tocopy); 1503 bawrite(bp); 1504 data = data + tocopy; 1505 *initp += tocopy; 1506 off = 0; 1507 left -= tocopy; 1508 cn += cl; 1509 ccl -= cl; 1510 } 1511 } 1512 1513 if (left) { 1514 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1515 error = EINVAL; 1516 } 1517 1518 return (error); 1519 } 1520 1521 /* 1522 * This is one of read routines. 1523 * 1524 * ntnode should be locked. 1525 */ 1526 int 1527 ntfs_readntvattr_plain( 1528 struct ntfsmount * ntmp, 1529 struct ntnode * ip, 1530 struct ntvattr * vap, 1531 off_t roff, 1532 size_t rsize, 1533 void *rdata, 1534 size_t * initp, 1535 struct uio *uio) 1536 { 1537 int error = 0; 1538 off_t off; 1539 1540 *initp = 0; 1541 if (vap->va_flag & NTFS_AF_INRUN) { 1542 int cnt; 1543 cn_t ccn, ccl, cn, left, cl; 1544 caddr_t data = rdata; 1545 struct buf *bp; 1546 size_t tocopy; 1547 1548 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1549 vap->va_vruncnt)); 1550 1551 off = roff; 1552 left = rsize; 1553 ccl = 0; 1554 ccn = 0; 1555 cnt = 0; 1556 while (left && (cnt < vap->va_vruncnt)) { 1557 ccn = vap->va_vruncn[cnt]; 1558 ccl = vap->va_vruncl[cnt]; 1559 1560 ddprintf(("ntfs_readntvattr_plain: " \ 1561 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1562 (u_int32_t) left, (u_int32_t) ccn, \ 1563 (u_int32_t) ccl, (u_int32_t) off)); 1564 1565 if (ntfs_cntob(ccl) < off) { 1566 off -= ntfs_cntob(ccl); 1567 cnt++; 1568 continue; 1569 } 1570 if (ccn || ip->i_number == NTFS_BOOTINO) { 1571 ccl -= ntfs_btocn(off); 1572 cn = ccn + ntfs_btocn(off); 1573 off = ntfs_btocnoff(off); 1574 1575 while (left && ccl) { 1576 /* 1577 * Always read single clusters at a 1578 * time - we need to avoid reading 1579 * differently-sized blocks at the 1580 * same disk offsets to avoid 1581 * confusing the buffer cache. 1582 */ 1583 tocopy = MIN(left, 1584 ntfs_cntob(1) - off); 1585 cl = ntfs_btocl(tocopy + off); 1586 KASSERT(cl == 1 && 1587 tocopy <= ntfs_cntob(1), 1588 ("single cluster limit mistake")); 1589 1590 ddprintf(("ntfs_readntvattr_plain: " \ 1591 "read: cn: 0x%x cl: %d, " \ 1592 "off: %d len: %d, left: %d\n", 1593 (u_int32_t) cn, 1594 (u_int32_t) cl, 1595 (u_int32_t) off, 1596 (u_int32_t) tocopy, 1597 (u_int32_t) left)); 1598 error = bread(ntmp->ntm_devvp, 1599 ntfs_cntobn(cn) 1600 * ntmp->ntm_multiplier, 1601 ntfs_cntob(cl), 1602 NOCRED, &bp); 1603 if (error) { 1604 brelse(bp); 1605 return (error); 1606 } 1607 if (uio) { 1608 uiomove(bp->b_data + off, 1609 tocopy, uio); 1610 } else { 1611 memcpy(data, bp->b_data + off, 1612 tocopy); 1613 } 1614 brelse(bp); 1615 data = data + tocopy; 1616 *initp += tocopy; 1617 off = 0; 1618 left -= tocopy; 1619 cn += cl; 1620 ccl -= cl; 1621 } 1622 } else { 1623 tocopy = MIN(left, ntfs_cntob(ccl) - off); 1624 ddprintf(("ntfs_readntvattr_plain: " 1625 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1626 " len: %d, left: %d\n", 1627 (u_int32_t) ccn, (u_int32_t) ccl, 1628 (u_int32_t) off, (u_int32_t) tocopy, 1629 (u_int32_t) left)); 1630 left -= tocopy; 1631 off = 0; 1632 if (uio) { 1633 size_t remains = tocopy; 1634 for(; remains; remains--) 1635 uiomove("", 1, uio); 1636 } else 1637 bzero(data, tocopy); 1638 data = data + tocopy; 1639 } 1640 cnt++; 1641 } 1642 if (left) { 1643 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1644 error = E2BIG; 1645 } 1646 } else { 1647 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1648 if (uio) 1649 uiomove(vap->va_datap + roff, rsize, uio); 1650 else 1651 memcpy(rdata, vap->va_datap + roff, rsize); 1652 *initp += rsize; 1653 } 1654 1655 return (error); 1656 } 1657 1658 /* 1659 * This is one of read routines. 1660 */ 1661 int 1662 ntfs_readattr_plain( 1663 struct ntfsmount * ntmp, 1664 struct ntnode * ip, 1665 u_int32_t attrnum, 1666 char *attrname, 1667 off_t roff, 1668 size_t rsize, 1669 void *rdata, 1670 size_t * initp, 1671 struct uio *uio) 1672 { 1673 size_t init; 1674 int error = 0; 1675 off_t off = roff, left = rsize, toread; 1676 caddr_t data = rdata; 1677 struct ntvattr *vap; 1678 *initp = 0; 1679 1680 while (left) { 1681 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1682 ntfs_btocn(off), &vap); 1683 if (error) 1684 return (error); 1685 toread = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1686 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1687 (u_int32_t) off, (u_int32_t) toread, 1688 (u_int32_t) vap->va_vcnstart, 1689 (u_int32_t) vap->va_vcnend)); 1690 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1691 off - ntfs_cntob(vap->va_vcnstart), 1692 toread, data, &init, uio); 1693 if (error) { 1694 printf("ntfs_readattr_plain: " \ 1695 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1696 (u_int32_t) off, (u_int32_t) toread); 1697 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1698 (u_int32_t) vap->va_vcnstart, 1699 (u_int32_t) vap->va_vcnend); 1700 ntfs_ntvattrrele(vap); 1701 break; 1702 } 1703 ntfs_ntvattrrele(vap); 1704 left -= toread; 1705 off += toread; 1706 data = data + toread; 1707 *initp += init; 1708 } 1709 1710 return (error); 1711 } 1712 1713 /* 1714 * This is one of read routines. 1715 */ 1716 int 1717 ntfs_readattr( 1718 struct ntfsmount * ntmp, 1719 struct ntnode * ip, 1720 u_int32_t attrnum, 1721 char *attrname, 1722 off_t roff, 1723 size_t rsize, 1724 void *rdata, 1725 struct uio *uio) 1726 { 1727 int error = 0; 1728 struct ntvattr *vap; 1729 size_t init; 1730 1731 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1732 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1733 1734 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1735 if (error) 1736 return (error); 1737 1738 if ((roff > vap->va_datalen) || 1739 (roff + rsize > vap->va_datalen)) { 1740 ddprintf(("ntfs_readattr: offset too big\n")); 1741 ntfs_ntvattrrele(vap); 1742 return (E2BIG); 1743 } 1744 if (vap->va_compression && vap->va_compressalg) { 1745 u_int8_t *cup; 1746 u_int8_t *uup; 1747 off_t off = roff, left = rsize, tocopy; 1748 caddr_t data = rdata; 1749 cn_t cn; 1750 1751 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1752 vap->va_compressalg)); 1753 1754 cup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1755 M_NTFSDECOMP, M_WAITOK); 1756 uup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1757 M_NTFSDECOMP, M_WAITOK); 1758 1759 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1760 off = roff - ntfs_cntob(cn); 1761 1762 while (left) { 1763 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1764 attrname, ntfs_cntob(cn), 1765 ntfs_cntob(NTFS_COMPUNIT_CL), 1766 cup, &init, NULL); 1767 if (error) 1768 break; 1769 1770 tocopy = MIN(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1771 1772 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1773 if (uio) 1774 uiomove(cup + off, tocopy, uio); 1775 else 1776 memcpy(data, cup + off, tocopy); 1777 } else if (init == 0) { 1778 if (uio) { 1779 size_t remains = tocopy; 1780 for(; remains; remains--) 1781 uiomove("", 1, uio); 1782 } 1783 else 1784 bzero(data, tocopy); 1785 } else { 1786 error = ntfs_uncompunit(ntmp, uup, cup); 1787 if (error) 1788 break; 1789 if (uio) 1790 uiomove(uup + off, tocopy, uio); 1791 else 1792 memcpy(data, uup + off, tocopy); 1793 } 1794 1795 left -= tocopy; 1796 data = data + tocopy; 1797 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1798 cn += NTFS_COMPUNIT_CL; 1799 } 1800 1801 free(uup, M_NTFSDECOMP); 1802 free(cup, M_NTFSDECOMP); 1803 } else 1804 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1805 roff, rsize, rdata, &init, uio); 1806 ntfs_ntvattrrele(vap); 1807 return (error); 1808 } 1809 1810 #if 0 1811 int 1812 ntfs_parserun( 1813 cn_t * cn, 1814 cn_t * cl, 1815 u_int8_t * run, 1816 u_long len, 1817 u_long *off) 1818 { 1819 u_int8_t sz; 1820 int i; 1821 1822 if (NULL == run) { 1823 printf("ntfs_parsetun: run == NULL\n"); 1824 return (EINVAL); 1825 } 1826 sz = run[(*off)++]; 1827 if (0 == sz) { 1828 printf("ntfs_parserun: trying to go out of run\n"); 1829 return (E2BIG); 1830 } 1831 *cl = 0; 1832 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1833 printf("ntfs_parserun: " \ 1834 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1835 sz, len, *off); 1836 return (EINVAL); 1837 } 1838 for (i = 0; i < (sz & 0xF); i++) 1839 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1840 1841 sz >>= 4; 1842 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1843 printf("ntfs_parserun: " \ 1844 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1845 sz, len, *off); 1846 return (EINVAL); 1847 } 1848 for (i = 0; i < (sz & 0xF); i++) 1849 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1850 1851 return (0); 1852 } 1853 #endif 1854 1855 /* 1856 * Process fixup routine on given buffer. 1857 */ 1858 int 1859 ntfs_procfixups( 1860 struct ntfsmount * ntmp, 1861 u_int32_t magic, 1862 caddr_t buf, 1863 size_t len) 1864 { 1865 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1866 int i; 1867 u_int16_t fixup; 1868 u_int16_t *fxp; 1869 u_int16_t *cfxp; 1870 1871 if (fhp->fh_magic != magic) { 1872 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1873 fhp->fh_magic, magic); 1874 return (EINVAL); 1875 } 1876 if ((fhp->fh_fnum - 1) * NTFS_BLOCK_SIZE != len) { 1877 printf("ntfs_procfixups: " \ 1878 "bad fixups number: %d for %ld bytes block\n", 1879 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1880 return (EINVAL); 1881 } 1882 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1883 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1884 return (EINVAL); 1885 } 1886 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1887 cfxp = (u_int16_t *) (buf + NTFS_BLOCK_SIZE - 2); 1888 fixup = *fxp++; 1889 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1890 if (*cfxp != fixup) { 1891 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1892 return (EINVAL); 1893 } 1894 *cfxp = *fxp; 1895 cfxp = (u_int16_t *) ((caddr_t) cfxp + NTFS_BLOCK_SIZE); 1896 } 1897 return (0); 1898 } 1899 1900 #if 0 1901 int 1902 ntfs_runtocn( 1903 cn_t * cn, 1904 struct ntfsmount * ntmp, 1905 u_int8_t * run, 1906 u_long len, 1907 cn_t vcn) 1908 { 1909 cn_t ccn = 0; 1910 cn_t ccl = 0; 1911 u_long off = 0; 1912 int error = 0; 1913 1914 #if NTFS_DEBUG 1915 int i; 1916 printf("ntfs_runtocn: run: %p, %ld bytes, vcn:%ld\n", 1917 run, len, (u_long) vcn); 1918 printf("ntfs_runtocn: run: "); 1919 for (i = 0; i < len; i++) 1920 printf("0x%02x ", run[i]); 1921 printf("\n"); 1922 #endif 1923 1924 if (NULL == run) { 1925 printf("ntfs_runtocn: run == NULL\n"); 1926 return (EINVAL); 1927 } 1928 do { 1929 if (run[off] == 0) { 1930 printf("ntfs_runtocn: vcn too big\n"); 1931 return (E2BIG); 1932 } 1933 vcn -= ccl; 1934 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1935 if (error) { 1936 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1937 return (error); 1938 } 1939 } while (ccl <= vcn); 1940 *cn = ccn + vcn; 1941 return (0); 1942 } 1943 #endif 1944 1945 /* 1946 * this initializes toupper table & dependant variables to be ready for 1947 * later work 1948 */ 1949 void 1950 ntfs_toupper_init() 1951 { 1952 ntfs_toupper_tab = (wchar *) NULL; 1953 lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0); 1954 ntfs_toupper_usecount = 0; 1955 } 1956 1957 void 1958 ntfs_toupper_destroy(void) 1959 { 1960 1961 lockdestroy(&ntfs_toupper_lock); 1962 } 1963 1964 /* 1965 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1966 * otherwise read the data from the filesystem we are currently mounting 1967 */ 1968 int 1969 ntfs_toupper_use(mp, ntmp) 1970 struct mount *mp; 1971 struct ntfsmount *ntmp; 1972 { 1973 int error = 0; 1974 struct vnode *vp; 1975 1976 /* get exclusive access */ 1977 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1978 1979 /* only read the translation data from a file if it hasn't been 1980 * read already */ 1981 if (ntfs_toupper_tab) 1982 goto out; 1983 1984 /* 1985 * Read in Unicode lowercase -> uppercase translation file. 1986 * XXX for now, just the first 256 entries are used anyway, 1987 * so don't bother reading more 1988 */ 1989 ntfs_toupper_tab = malloc(65536 * sizeof(wchar), 1990 M_NTFSRDATA, M_WAITOK); 1991 1992 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, LK_EXCLUSIVE, &vp))) 1993 goto out; 1994 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1995 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1996 vput(vp); 1997 1998 out: 1999 ntfs_toupper_usecount++; 2000 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2001 return (error); 2002 } 2003 2004 /* 2005 * lower the use count and if it reaches zero, free the memory 2006 * tied by toupper table 2007 */ 2008 void 2009 ntfs_toupper_unuse() 2010 { 2011 /* get exclusive access */ 2012 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 2013 2014 ntfs_toupper_usecount--; 2015 if (ntfs_toupper_usecount == 0) { 2016 free(ntfs_toupper_tab, M_NTFSRDATA); 2017 ntfs_toupper_tab = NULL; 2018 } 2019 #ifdef DIAGNOSTIC 2020 else if (ntfs_toupper_usecount < 0) { 2021 panic("ntfs_toupper_unuse(): use count negative: %d\n", 2022 ntfs_toupper_usecount); 2023 } 2024 #endif 2025 2026 /* release the lock */ 2027 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2028 } 2029 2030 int 2031 ntfs_u28_init( 2032 struct ntfsmount *ntmp, 2033 wchar *u2w, 2034 char *cs_local, 2035 char *cs_ntfs) 2036 { 2037 char ** u28; 2038 int i, j, h, l; 2039 2040 if (ntfs_iconv && cs_local) { 2041 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 2042 return (0); 2043 } 2044 2045 u28 = malloc(256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2046 2047 for (i=0; i<256; i++) { 2048 h = (u2w[i] >> 8) & 0xFF; 2049 l = (u2w[i]) &0xFF; 2050 2051 if (u28[h] == NULL) { 2052 u28[h] = malloc(256 * sizeof(char), M_TEMP, M_WAITOK); 2053 for (j=0; j<256; j++) 2054 u28[h][j] = '_'; 2055 } 2056 2057 u28[h][l] = i & 0xFF; 2058 } 2059 2060 ntmp->ntm_u28 = u28; 2061 2062 return (0); 2063 } 2064 2065 int 2066 ntfs_u28_uninit(struct ntfsmount *ntmp) 2067 { 2068 char ** u28; 2069 int i; 2070 2071 if (ntmp->ntm_u28 == NULL) { 2072 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2073 ntfs_iconv->close(ntmp->ntm_ic_u2l); 2074 } 2075 return (0); 2076 } 2077 2078 u28 = ntmp->ntm_u28; 2079 2080 for (i=0; i<256; i++) 2081 if (u28[i] != NULL) 2082 free(u28[i], M_TEMP); 2083 2084 free(u28, M_TEMP); 2085 2086 return (0); 2087 } 2088 2089 int 2090 ntfs_82u_init( 2091 struct ntfsmount *ntmp, 2092 char *cs_local, 2093 char *cs_ntfs) 2094 { 2095 wchar * _82u; 2096 int i; 2097 2098 if (ntfs_iconv && cs_local) { 2099 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2100 return (0); 2101 } 2102 2103 _82u = malloc(256 * sizeof(wchar), M_TEMP, M_WAITOK); 2104 2105 for (i=0; i<256; i++) 2106 _82u[i] = i; 2107 2108 ntmp->ntm_82u = _82u; 2109 2110 return (0); 2111 } 2112 2113 int 2114 ntfs_82u_uninit(struct ntfsmount *ntmp) 2115 { 2116 2117 if (ntmp->ntm_82u == NULL) { 2118 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2119 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2120 } 2121 return (0); 2122 } 2123 2124 free(ntmp->ntm_82u, M_TEMP); 2125 return (0); 2126 } 2127 2128 /* 2129 * maps the Unicode char to local character 2130 */ 2131 char * 2132 ntfs_u28( 2133 char *outbuf, 2134 struct ntfsmount *ntmp, 2135 wchar wc) 2136 { 2137 char *p, *outp, inbuf[3]; 2138 size_t ilen, olen; 2139 2140 outp = outbuf; 2141 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2142 ilen = 2; 2143 olen = 4; 2144 2145 inbuf[0] = (char)(wc>>8); 2146 inbuf[1] = (char)wc; 2147 inbuf[2] = '\0'; 2148 p = inbuf; 2149 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen, 2150 &outp, &olen); 2151 if (olen == 4) 2152 *outp++ = '?'; 2153 *outp = '\0'; 2154 outp = outbuf; 2155 return (outp); 2156 } 2157 2158 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2159 outbuf[0] = (p == NULL) ? '_' : p[wc&0xFF] & 0xFF; 2160 outbuf[1] = '\0'; 2161 return (outp); 2162 } 2163 2164 wchar 2165 ntfs_82u( 2166 struct ntfsmount *ntmp, 2167 const char *c, 2168 int *len) 2169 { 2170 char *outp, outbuf[3]; 2171 wchar uc; 2172 size_t ilen, olen; 2173 2174 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2175 ilen = (size_t)*len; 2176 olen = 2; 2177 2178 outp = outbuf; 2179 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, &c, &ilen, &outp, &olen); 2180 *len -= (int)ilen; 2181 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2182 2183 return (uc); 2184 } 2185 2186 if (ntmp->ntm_82u != NULL) 2187 return (ntmp->ntm_82u[*c&0xFF]); 2188 2189 return ('?'); 2190 } 2191
Cache object: 18918c33830fbe3340eed8b1f726132b
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